法国专利FR3049620A1 PLANT PAPER COMPRISING FIBERS FROM A PLANT

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专利摘要:
The invention relates to a vegetable paper comprising fibers of a plant which has been extracted in a solvent.
公开号:FR3049620A1
申请号:FR1652994
申请日:2016-04-05
公开日:2017-10-06
发明作者:Cedric Rousseau；Laetitia Barat
申请人:SWM Luxembourg SARL；
IPC主号:

专利说明:

The invention relates to a vegetable paper comprising fibers of a plant having undergone extraction in a solvent.
As conventional paper is made of forest wood fibers, mainly cellulose fibers, the paper industry is very much a consumer of wood from forests. Indeed, between two and three tons of wood are needed to make a ton of conventional paper. Moreover, since 1950, world paper consumption worldwide has steadily increased, for example in France, it has multiplied by 10. This increase in consumption is not without effect on the forests of the planet , 80% of which would have disappeared under the blows of human activity.
In the manufacture of paper, the bark of the wood is first removed, then the debarked wood is subjected to different types of delignification treatments for the production of paper pulp, the raw material of paper making . These treatments are intended to delignify the wood fibers. to dissolve the lignin present in the wood and now the cohesion between the wood fibers, and thus to allow to separate the wood fibers. Typically these delignification treatments are those referred to as mechanical pulp, thermomechanical pulp, chemical mechanical pulp or chemical pulp. These treatments are very energy intensive, and may require the use of dangerous chemicals such as soda.
In addition, whatever the treatment used, the pulp obtained has a color pulling on the brown. Bleaching is therefore an absolutely necessary treatment to make a white paper. However, the bleaching of paper requires the use of chlorine or hydrogen peroxide, which are dangerous compounds.
To limit the impact of paper production, one idea is to recycle conventional paper to reuse recycled wood fibers. However, recycling requires the setting up of costly collection and delivery channels to reprocessing plants. Recycled wood fibers must also undergo a treatment requiring a large volume of hot water, and therefore energy, to separate and de-encrust the fibers. In addition, the pulp obtained must also undergo the bleaching treatment. Paper made from recycled wood fiber is of lower quality. Recycling therefore does not fully limit the ecological impact of paper production.
It is also possible, in order to limit the ecological impact of paper production, to substitute wood fibers with non-tree derived plant fibers, which may be derived from industrial plant residues. By way of example, the paper described in patent application EP 0 645 491. In this paper, from 5% to 40% by weight of wood fibers are substituted by a plant substance derived from a plant, the substance plant comprising both fibrous and non-fibrous parts of the plant. However, as taught in EP 0 645 491, if more than 40% by weight of wood fibers are substituted by this plant substance then the physical and mechanical properties of the paper described and its use are altered. Therefore, at least 60% by weight of the wood fibers of the described paper undergo the treatments described above.
The inventors have developed a vegetable paper implementing an extraction in a solvent.
The present invention describes a vegetable paper comprising fibers of a plant having undergone extraction in a solvent. The amount of the fibers of the plant having undergone extraction in the solvent in the vegetable paper according to the invention is at least 50% by weight relative to the total amount of fibers of said vegetable paper. The vegetable paper according to the invention comprises less than 10% of extract soluble in the solvent of the plant by weight of dry matter of said vegetable paper.
The fibers according to the invention correspond to the fibrous parts of the plant, whereas the extract of the plant soluble in the solvent corresponds to all the non-fibrous parts of the plant which are soluble in the solvent, said plant having undergone a extraction in the solvent. Extraction into the solvent produced to obtain the fibers according to the invention is a gentle method which does not use compounds such as sodium hydroxide. It is also different from the delignification treatments used for the production of pulp and bleaching treatments. Typically delignification treatments are those referred to as mechanical pulp, thermomechanical pulp, chemical mechanical pulp or chemical pulp. Typically bleaching treatments are those using chlorine, chlorine dioxide, oxygen, ozone or oxygenated water. Advantageously, the ecological impact of the extraction in a solvent according to the invention is less than that of the delignification and bleaching treatments mentioned above. Therefore, the ecological impact of the vegetable paper according to the invention is lower than the ecological impact of a conventional paper.
According to a particular embodiment, the solvent is an aqueous solvent, especially the solvent is water.
Typically, the aqueous solvent may be a 70-30 water-alcohol mixture.
According to the embodiment in which the solvent is water, the extraction is carried out at atmospheric pressure and the temperature of the water is 40 ° C to 100 ° C, in particular 60 ° C to 90 ° C, more particularly from 70 ° C to 80 ° C.
Typically the fibers according to the invention are obtained after extraction into the solvent and separation of the soluble extract in the solvent. The fibers according to the invention may therefore comprise a residual fraction of the soluble extract in the solvent, which explains why the vegetable paper according to the invention comprises less than 10% of extract soluble in the solvent of the plant by weight of vegetable paper matter. Typically, the vegetable paper according to the invention comprises less than 5%, less than 4%, less than 3%, less than 2%, less than 1% of soluble extract in the solvent of the plant by weight of dry matter of the vegetable paper. According to one particular embodiment, the vegetable paper according to the invention does not comprise an extract of the plant that is soluble in the solvent.
The following technique will be used to determine the percentage of soluble extract in the solvent by weight of dry matter of the vegetable paper. The vegetable paper to be analyzed is ground to a particle size of less than or equal to 2 mm. The crushed vegetable paper is then mixed with boiling water for 10 minutes to extract the soluble extract in the solvent. The weight of dry matter in the solvent-soluble extract vegetable paper is calculated as the difference between the dry weight of the vegetable paper sample and the dry weight of the fibrous residue after extraction. The extraction in the solvent makes it possible to achieve the small amount, or even the absence of solvent-soluble extract in the vegetable paper according to the invention. Without wishing to be anxious by any theory, the inventors are of the opinion that the extraction in the solvent confers on the paper according to the invention its mechanical and sensory properties. Typically, the smell of vegetable paper is neutral and its surface is non-sticky. The color of the vegetable paper can also be natural.
The vegetable paper can be obtained from any type of plant, in particular, the cocoa tree, the coffee tree, the tea tree, the vine, the ginger, the ginko, the chamomile, the tomato, the ivy, the mate, rooibos, cucumber, mint, a cereal such as wheat, barley, rye, or a tree such as hardwoods or softwoods.
The fibers according to the invention may also come from a plant mixture. Advantageously, this makes it possible to have a wide choice of fibers according to the invention and thus to obtain a vegetable paper whose mechanical and sensory properties can be adapted to the use of said paper. According to a preferred embodiment, the plant is cocoa, coffee or tea tree. Typically, a plant mix is tea tree and mint.
Typically vegetable paper results from the whole plant, a part of the plant or a mixture of different parts of the plant. The part of the plant can be a part of the plant as such, such as tea leaf. The part of the plant can also be the result of the mechanical, chemical or mechano-chemical transformation of one or more parts of the plant, for example the hull protecting the cocoa bean resulting from the process of shelling the beans, the film surrounding the coffee bean, the beer pudding, the grape marc, the cucumber stalk or the tomato leaf. In particular, the part of the plant is the tea leaf, the hull protecting the cocoa bean resulting from the process of shelling the beans, the film surrounding the coffee bean, the draft of beer or the grape marc.
According to a preferred embodiment, the part of the plant is the hull protecting the cocoa bean, the film surrounding the coffee bean, the tea leaf.
According to a particular embodiment, the part of the plant is not a part used for the manufacture of paper, in particular the sapwood, the heart and the marrow of the tree. The vegetable paper according to this embodiment does not implement delignification process. Its ecological impact is therefore much lower than the ecological impact of a conventional paper.
Typically, the fibers according to the invention represent from 50% to 90%, in particular from 60% to 80% by weight, based on the total amount of fibers of the vegetable paper.
The vegetable paper may also include delignified fibers commonly used in stationery. Typically these fibers have undergone a delignification treatment commonly used in paper milling and, optionally, a bleaching treatment. Typically these fibers may be Tencell® fibers (cellulose fiber milled and dissolved in / V-methylmorpholinc / V-oxyhydroxide monohydrate) or fibers from hemp, bamboo, cotton, kapok, coconut , flax, ramie, jute, sisal, kenaf, abaca, sisal, raffia, papyrus, reed, wheat, sugar cane, maize, sorghum and trees such as hardwoods or softwoods. Typically, the amount of these fibers in the vegetable paper according to the invention is from 0% to 50%, preferably from 10% to 45%, more preferably still from 20% to 40% by weight relative to the total amount of vegetable paper fibers.
Alternatively, or in addition to the delignified fibers commonly used in stationery, the vegetable paper may comprise synthetic fibers. Typically the synthetic fibers are synthetic organic or mineral fibers. For example, an organic synthetic fiber is a polylactic acid fiber, polyamides, polyesters such as PET, chlorofibers, acrylic fiber, vinyl fiber, elastodiene, vinylal, elastane, aramid fiber, polybenzimidazole fiber, a polypropylene fiber, a polyethylene fiber, a polyphenolic fiber, a polyurea fiber, a polyurethane fiber, a textilene, a viscose such as rayon or a mixture thereof. A mineral fiber is, for example, a glass fiber, a ceramic fiber such as silicon carbide (SiC), a fiber of ductile material such as gold, silver or aluminum, a carbon fiber, a boron fiber or their mixture. Typically, the amount of synthetic fibers in the vegetable paper according to the invention is from 5% to 50%, preferably from 10% to 40%, more preferably from 15% to 30% by weight relative to the total amount of vegetable paper fibers.
The delignified fibers commonly used in stationery and the synthetic fibers can be added to the vegetable paper in order to modify the properties of said vegetable paper. Typically, the properties of the vegetable paper that can be modified are the mechanical strength properties such as tensile, tear, burst, bend or flexural strength, optical properties such as whiteness, opacity or gloss, or textural properties such as basis weight, porosity, or permeability to air or liquid.
Typically, the vegetable paper may comprise an additive usually used for the manufacture of conventional papers in order to develop or confer on the vegetable paper new properties such as, for example, chemical, optical, sensory or mechanical properties such as resistance to tearing or folding resistance. Typically, an additive may be a wet strength agent, a dry strength agent, a softening agent, a lotion composition, a wetting agent, latex such as latex applied in one or more surface pattern.
A wet strength agent reduces the potential for degradation of the plant paper if it is brought into contact with a liquid, such as water. Typically, the wet strength agent may be chosen from polyamides, such as an epichlorohydrin resin, a polyamine-epichlorohydrin resin, a poly (aminoamide) -epichlorohydrin resin, a urea-formaldehyde resin, a melamine resin. -formaldehyde; an alkyl ketene dimer; anhydrous alkyl-succinic; polyvinylamine; an oxidized polysaccharide. Typically, the amount of wet strength agent is from 0.1% to 30%, preferably from 1% to 15%, more preferably from 5% to 10% by dry weight of the vegetable paper.
A dry strength agent makes it possible to increase the strength of the vegetable paper if the latter is subjected to significant mechanical stresses. The dry strength agent may be selected from modified starches and gums, cellulosic polymers, synthetic polymers such as, for example, carboxymethylcellulose and polyacrylamides. Typically, the amount of dry strength agent is from 0.1% to 30%, preferably from 1% to 15%, more preferably from 5% to 10% by dry weight of the vegetable paper.
A softening agent makes it possible to improve the softness of the vegetable paper according to the invention. Typically, a softening agent is a fatty acid, a siloxane compound, a silicone compound, an aminosilicone compound, an aloe vera extract, a sweet almond extract, a chamomile extract, a quaternary ammonium compound. Typically, the amount of softening agent is from 0.1% to 30%, preferably from 1% to 15%, more preferably from 5% to 10% by dry weight of the vegetable paper.
Typically, the additive may also be a filler such as kaolin, calcium carbonate, talc, barium sulphate, a bentonite, a zeolite, a silicate, a dye or a mixture thereof. The addition of this filler can modify some of the mechanical properties of the vegetable paper, in particular properties for printing or writing on it. This load can also give the vegetable paper some sensory properties. Typically the dye gives the vegetable paper its color. Typically, the amount of filler in the vegetable paper according to the invention is from 0% to 50%, preferably from 5% to 30%, more preferably from 10% to 20% by dry weight of the vegetable paper.
Thanks to its mechanical and sensory properties, the vegetable paper according to the invention can be used as wrapping paper or as a primary, secondary or tertiary packaging element, in particular food packaging, packaging cosmetic product, cleaning product packaging. Vegetable paper can also be used as decoration paper (wallpaper) or as writing paper.
According to one embodiment of the invention, the packaging paper, in particular food packaging, cosmetic product packaging, maintenance product packaging can comprise the vegetable paper according to the invention, in particular , the vegetable paper according to the invention as a primary, secondary or tertiary packaging element.
According to one embodiment of the invention, the decorative paper may comprise the vegetable paper according to the invention.
According to one embodiment of the invention, the writing paper may comprise the vegetable paper according to the invention.
Typically, the vegetable paper according to the invention, included in the food packaging paper, can be used to package any type of food, such as meat, fish, cheese, insects, vegetables, fruits, beverage bottles, bakery products, chocolate, whether for cold applications or for hot applications such as cooking.
Typically, the vegetable paper according to the invention, included in the cosmetic product wrapping paper, can be used to package any type of solid cosmetics such as soap in solid form (Marseille soap), eyeshadow, a lipstick, a lip balm.
Typically, the vegetable paper according to the invention included in the care product packaging paper can be used to package cleaning products in solid form, such as laundry, stain remover, dishwashing detergent, household cleaner or deodorant.
Depending on its use, the vegetable paper according to the invention may comprise an extract of a plant having a cosmetic property such as hair coloring, skin coloring or weight loss, an extract of a plant having a dermatological property such as cleaning skin wounds and wounds, combating itchy scalp and dandruff, soothing the skin in case of cracking, dryness, insect bite, abrasion, of burning and diaper rash, an extract of a plant used for a therapeutic application such as eye irritation, bronchial disorders, coughs, colds.
Thanks to its sensory properties, and in particular its natural color, the vegetable paper according to the invention can be incorporated into a tissue, a cleaning wipe or a cosmetic product. Indeed, the natural color of the vegetable paper according to the invention can reassure the user as to the non-toxic nature of the cleaning wipe or the cosmetic product that he can use on his skin.
Typically, the tissue according to the invention may comprise, in addition to the vegetable paper according to the invention, a softening agent such as a fatty acid, a siloxane compound, a silicone compound, an aminosilicone compound, an aloe vera extract, a sweet almond extract, a chamomile extract, a quaternary ammonium compound, a biocidal compound such as a disinfectant, an antimicrobial agent, an antibacterial agent or a mixture thereof, a decongestant agent such as a menthol extract or of eucalyptus, a perfume, a moisturizing compound such as vitamin E or a mixture thereof.
Typically, the cleaning wipe according to the invention may comprise, in addition to the vegetable paper according to the invention, a biocidal compound such as a disinfectant, an antimicrobial agent, an antibacterial agent or a mixture thereof.
Typically, the cleaning wipe according to the invention may be intended for the care of the body or the maintenance of the house.
Typically, the cosmetic product according to the invention may comprise, in addition to the vegetable paper according to the invention, an active ingredient chosen from sebum regulators, antimicrobials, mattifying agents, astringents, acidifiers, cicatrizants, exfoliants or kératorégulateur, occlusives, protectors, emollients, nourishing, moisturizers, anti-aging, soothing, decongestants or venotonic, occlusives, UV filters, humectants, hygroscopic, gelling agents, exfoliants, anti-radicals , regenerants or cellular stimulants, firming agents, tensors, anti-glycation agents, lighteners or their mixture.
Typically, the cosmetic product can be a mask for the face, an eye patch or a body envelope.
A papermaking process can typically be used to make the vegetable paper according to the invention. In fact, the small amount of soluble extract in the solvent facilitates the use of the fibers according to the invention in a paper-making process during the manufacture of vegetable paper. Indeed, the sugars, proteins and colloids (pectins, starches) naturally present in the soluble extract in the solvent can cause problems, such as collages on the drying cylinders, difficulties in draining or problems of fermentation in the vats.
According to a preferred embodiment of the invention, a papermaking process will be used. According to this embodiment, a vegetable paper according to the invention is a vegetable paper that can be obtained by a papermaking process.
The vegetable paper according to the invention is manufactured by a papermaking process comprising the following steps: one or more parts of the plant are mixed with the solvent in order to extract the extract of the soluble plant in the solvent, the soluble extract in the solvent is then separated from the fibrous parts of the plant to obtain the fibers according to the invention, - the fibers according to the invention are passed through a paper machine to produce the vegetable paper.
Typically the fibers according to the invention are obtained by a process of extraction and separation. In such a process, one or more parts of the plant are mixed with the solvent, for example in an extractor, in order to extract the extract from the solvent-soluble plant. The extract of the plant soluble in the solvent is then separated from the fibrous parts, for example by passing through a screw press, to obtain, on the one hand, the fibers according to the invention and, on the other hand, the soluble extract in the solvent. In such an extraction and separation process, the fibers according to the invention are extracted and separated from the soluble extract in the solvent.
According to one embodiment, the fibers according to the invention can come from different plants.
According to this embodiment, it is possible to separately obtain the fibers according to the invention of each plant. It is also possible to obtain the fibers according to the invention together by gathering one or more parts of the different plants and then mixing them with the solvent, for example in an extractor, in order to extract the extracts of the different plants soluble in the solvent. The temperature of the solvent will then be adapted to the plants to be treated and, in particular, to the plant requiring the highest solvent temperature to extract the extract of this plant soluble in the solvent. The extracts of the various plants soluble in the solvent are then separated from the fibrous parts, for example by passing through a screw press, to isolate and obtain, on the one hand, the fibers according to the invention and, on the other hand, the extracts of the different plants soluble in the solvent. According to this alternative, the temperature of the solvent may be adapted to the part or parts of the different plants to be treated. This alternative embodiment is very advantageous because it makes it possible to obtain the fibers according to the invention of the different plants without implementing several processes in parallel.
According to a particular embodiment, the solvent is an aqueous solvent, especially the solvent is water.
According to the embodiment in which the solvent is water, the extraction is carried out at atmospheric pressure and the temperature of the water can be adapted to the plant to be treated and, in particular, to the part or parts of the plant to treat. Typically the temperature of the water is 40 ° C to 100 ° C, especially 60 ° C to 90 ° C, more preferably 70 ° C to 80 ° C.
If the vegetable paper comprises fibers according to the invention from different plants, then the different fibers according to the invention can be mixed before passing into the paper machine to produce the vegetable paper according to the invention. The different fibers according to the invention can also pass alternatively or according to a predefined scheme in the paper machine in order to manufacture the vegetable paper according to the invention.
If the vegetable paper comprises delignified fibers commonly used in stationery, then the fibers according to the invention and the delignified fibers commonly used in stationery can be mixed before passing into the paper machine in order to manufacture the vegetable paper according to the invention. The fibers according to the invention and the delignified fibers commonly used in stationery can also pass alternatively in the paper machine in order to manufacture the vegetable paper according to the invention.
If the vegetable paper comprises synthetic fibers, then the fibers according to the invention and the synthetic fibers can be mixed before passing into the paper machine in order to manufacture the vegetable paper according to the invention. The fibers according to the invention and the synthetic fibers can also pass alternately in the paper machine in order to manufacture the vegetable paper according to the invention.
If the vegetable paper comprises delignified fibers commonly used in stationery and synthetic fibers, then the fibers according to the invention, the delignified fibers commonly used in stationery and the synthetic fibers can be mixed before passing into the paper machine in order to manufacture the vegetable paper according to the invention. The fibers according to the invention, the delignified fibers commonly used in stationery and the synthetic fibers can also pass alternately or according to a predefined scheme in the paper machine to produce the vegetable paper according to the invention.
If the vegetable paper comprises a wet strength agent, then this wet strength agent can be added to the fibers of the invention before they pass into the paper machine to manufacture the wet strength agent. vegetable paper according to the invention. The wet strength agent can also be added directly to the formed vegetable paper by means of a size press, coating or spraying.
If the vegetable paper comprises a dry strength agent, then this dry strength agent is added to the fibers of the invention before they pass into the paper machine to make the paper. plant according to the invention. The dry strength agent can also be added directly to the formed vegetable paper by means of a size press, coating or spraying.
If the vegetable paper comprises an additive, then this additive can be added to the fibers according to the invention before they pass into the paper machine to produce the vegetable paper according to the invention. The additive can also be added directly to the plant paper formed using a size press, a coating or a spray.
Typically, the fibers according to the invention can pass, for example, in a refiner to obtain refined fibers. These refined fibers are then passed through the paper machine to produce the vegetable paper according to the invention.
Once made, the vegetable paper can be dried by a drying device.
The vegetable paper can then be shaped into sheets, slips or rolled into rolls which can then be cut into coils, strips, cups, cup, mug, bowl, salad bowl, bottle, cauldron, bottles, straw, tubes, disc .
The vegetable paper may also undergo additional processes known to the paper industry.
Typically, one of these methods allows the manufacture of multi-layered vegetable paper using multiple headboxes.
Another of this complementary process is the hydro-interleaving. This process uses jets of water under high pressure to entangle the fibers. Tightened between a grid and a compression band, the vegetable paper according to the invention is first compacted and moistened to prevent the formation of air pockets. Circulating on a perforated cylinder covered with a fine fabric, the vegetable paper according to the invention is subjected to jets of water under high pressure, typically from 150 to 250 bar on one side, then on the other. The injectors are holes, typically 80 to 150 μm in diameter, arranged at a rate of 1 to 3 holes per millimeter, in rows spaced apart, typically 3 to 5 mm. The pressure of the water increases from the first to the last injectors. To avoid drowning the vegetable paper according to the invention, the inside of the rolls is in depression. The residual water is removed by suction first and then by drying.
Advantageously, the sensory properties, in particular the softness, and the absorption capacity of the plant paper having undergone the hydro-interlacing process are improved. In addition, the vegetable paper that has undergone the hydro-interlacing process can form harmonious folds when it is suspended, is more resistant to traction, and is easily shaped. The vegetable paper having undergone the hydro-locking treatment can therefore be used in an application where the feel-good feel is paramount, such as, for example, as toilet paper. Π can also be used as paper towels. By virtue of the improvement of its sensory properties, and in particular of its softness, the vegetable paper which has undergone the hydro-interlacing treatment can also, and advantageously, be incorporated into the tissue, the cleaning wipe or the cosmetic product described. previously.
According to one embodiment of the invention, the toilet paper may comprise the vegetable paper according to the invention.
According to one embodiment of the invention, the absorbent paper may comprise the vegetable paper according to the invention.
According to a particular embodiment, the plant is the cocoa tree and the fibers according to the invention then come from the hull protecting the cocoa bean.
Advantageously, the hull is a waste resulting from the industrial production of cocoa. By using the shell to obtain the fibers according to the invention included in the vegetable paper according to the invention, it is therefore possible to valorize this waste and thus limit the ecological impact of this vegetable paper.
Typically, vegetable paper can be obtained from any variety of hulls protecting the cocoa bean (eg from trinitario, criollo, forastero, cupuaçu, nacional or cocoa variety mixes). . Typically, vegetable paper results from the processing of different varieties of cockles protecting the cocoa bean.
Typically, the quantity of fibers according to the invention coming from the hull protecting the cocoa bean in the vegetable paper is at least 50%, in particular from 50% to 90%, more particularly from 60% to 80% by weight. weight in relation to the total amount of vegetable paper fibers.
Typically, vegetable paper comprising fibers according to the invention derived from the hull protecting the cocoa bean comprises less than 10%, less than 5%, less than 4%, less than 3%, less than 2%, less than 1%. % by weight of dry matter in the plant paper of solvent-soluble extract. According to one particular embodiment, the vegetable paper comprising fibers according to the invention originating from the hull protecting the cocoa bean does not comprise a solvent-soluble extract.
Advantageously, the vegetable paper according to the invention comprising the fibers according to the invention from the hull protecting the cocoa bean is slightly brittle and particularly resistant to folding. In addition, its smell is neutral. It is also possible to print on the vegetable paper according to the invention comprising the fibers according to the invention originating from the hull protecting the cocoa bean.
Owing to its mechanical and sensory properties, the vegetable paper according to the invention comprising the fibers according to the invention originating from the hull protecting the cocoa bean can be used as packaging paper, in particular food packaging, cosmetic product packaging, maintenance product packaging, or used as a baking paper, decorative paper (wallpaper), writing paper, or as a cleaning wipe or cosmetic product.
Typically, the use of such vegetable paper for chocolate product packaging is particularly attractive since it is possible to recycle by-products generated upstream of the chocolate manufacturing process, thus participating in the concept of the circular economy. This vegetable paper based on the hull protecting the cocoa bean can then be used to make a multitude of packaging: tablet envelopes, chocolate box wrap, boxes and boxes, soft bags, candy wrappers.
Typically, the vegetable paper according to the invention comprising the fibers according to the invention originating from the hull protecting the cocoa bean is manufactured by a papermaking process comprising the following steps: the hull protecting the cocoa bean is mixed with a solvent in order to to extract the extract of the cocoa soluble in the solvent, the solvent-soluble cocoa extract is then separated from the fibrous parts of the cocoa tree to obtain the fibers according to the invention, the fibers according to the invention are spent in a paper machine to make vegetable paper.
Typically, a shell protecting the cocoa bean may comprise up to 50% by weight of solvent soluble extract based on the total weight of the shell. It is therefore necessary to adapt the process for extracting and then separating the fibers according to the invention from the shell of the soluble extract in the solvent.
According to a particular embodiment, the solvent is an aqueous solvent, especially the solvent is water.
According to the embodiment in which the solvent is water, the extraction is carried out at atmospheric pressure and the temperature of the water is 30 ° C to 100 ° C, in particular 40 ° C to 90 ° C, more particularly from 60 ° C to 80 ° C.
Typically, the mixing time is from 5 minutes to 180 minutes, in particular from 10 minutes to 60 minutes, more particularly from 20 minutes to 45 minutes.
Before passing through the paper machine, the fibers according to the invention comprise less than 10% by weight of soluble extract in the solvent relative to the total weight of the fibers according to the invention.
The residual amount by weight of soluble extract in the solvent is measured by weighing the drained fibers before and after the extraction.
According to a particular embodiment, the plant is the coffee plant and the fibers according to the invention then come from the film surrounding the coffee seed.
Advantageously, the film is a waste resulting from the industrial production of coffee. By using the film to obtain the fibers according to the invention contained in the vegetable paper according to the invention, it is therefore possible to valorize this waste and thus limit the ecological impact of the vegetable paper.
According to this embodiment, the vegetable paper can be obtained from any variety of coffee. Typically, vegetable paper results from the treatment of different varieties of coffee.
Typically, the amount of fibers according to the invention from the film surrounding the coffee seed in the vegetable paper is at least 50%, in particular from 50% to 90%, more particularly from 60% to 80% by weight. weight in relation to the total amount of vegetable paper fibers.
Typically, vegetable paper comprising fibers according to the invention from the film surrounding the coffee seed comprises less than 10%, less than 5%, less than 4%, less than 3%, less than 2%, less than 1%. % by weight of dry matter in the plant paper of solvent-soluble extract. According to a particular embodiment, the vegetable paper comprising fibers according to the invention originating from the film surrounding the coffee seed does not comprise a solvent-soluble extract.
Advantageously, the vegetable paper according to the invention comprising fibers according to the invention from the film surrounding the coffee seed is therefore not very brittle and particularly resistant to bending. In addition, its smell is neutral.
Thanks to its mechanical and sensory properties, the vegetable paper according to the invention comprising fibers according to the invention derived from the film surrounding the coffee seed can be used as packaging paper, in particular for food packaging, d cosmetic product packaging, maintenance product packaging, or used as decoration paper (wallpaper), writing paper, or as a cleaning wipe or cosmetic product.
Typically, the use of such vegetable paper for packaging of coffee products such as coffee powder is particularly attractive since it is possible to recycle by-products generated upstream of the manufacturing process of these products, thus contributing to the concept of the circular economy.
Typically, the vegetable paper according to the invention comprising fibers according to the invention originating from the film surrounding the coffee seed is manufactured by a papermaking process comprising the following steps: the film surrounding the coffee seed is mixed with a solvent so as to extracting the extract soluble in the solvent of the coffee tree, the extract of the coffee soluble in the solvent is then separated from the fibrous parts of the coffee tree so as to obtain the fibers according to the invention, the fibers according to the invention are spent in a paper machine to make vegetable paper.
Typically, a film surrounding the coffee seed may comprise up to 40% by weight of solvent-soluble extract based on the total weight of the film. It is therefore necessary to adapt the process for extracting and then separating the fibers according to the invention from the film of the extract soluble in the solvent.
According to a particular embodiment, the solvent is an aqueous solvent, especially the solvent is water.
According to the embodiment in which the solvent is water, the extraction is carried out at atmospheric pressure and the temperature of the water is 30 ° C to 100 ° C, in particular 40 ° C to 90 ° C, more particularly from 60 ° C to 80 ° C.
Typically, the mixing time is from 5 minutes to 180 minutes, in particular from 10 minutes to 60 minutes, more particularly from 20 minutes to 45 minutes.
Before passing through the paper machine, the fibers according to the invention comprise less than 10% by weight of water extract relative to the total weight of the fibers according to the invention.
The residual amount by weight of soluble extract in the solvent is measured by weighing the drained fibers before and after the extraction.
According to a particular embodiment, the plant is the tea tree and the fibers according to the invention then come from tea leaves.
Typically, the tea leaves used come from threshing or mixing and scaferlati chopping of tea leaves or tea leaf debris. The tea leaves used, are advantageously the waste from the industrial production of tea. By using them to obtain the fibers according to the invention included in the vegetable paper according to the invention, it is therefore possible to valorize this waste and thus limit the ecological impact of the vegetable paper.
According to this embodiment, the vegetable paper can be obtained from any variety of tea tree. Typically, vegetable paper results from the treatment of different varieties of tea tree.
Typically, the quantity of fibers according to the invention from tea leaves is at least 50%, in particular from 50% to 90%, more particularly from 60% to 80% by weight relative to the total amount of vegetable paper fibers.
Typically, vegetable paper comprising fibers according to the invention from tea leaves comprises less than 5%, less than 4%, less than 3%, less than 2%, less than 1% by weight of dry matter within the Vegetable paper extract soluble in the solvent. According to a particular embodiment, the vegetable paper comprising fibers according to the invention from tea leaves does not comprise a soluble extract in the solvent.
Advantageously, the vegetable paper according to the invention comprising fibers according to the invention from tea leaves is therefore little brittle and particularly resistant to bending. In addition, its odor is neutral and it does not stick.
Thanks to its mechanical and sensory properties, the vegetable paper according to the invention comprising fibers according to the invention derived from tea leaves can be used as wrapping paper, in particular food packaging, product packaging. cosmetic, cleaning product packaging, or used as decoration paper (wallpaper), as writing paper, or as a cleaning wipe or cosmetic product.
Typically, the use of such vegetable paper for packaging products comprising tea is particularly attractive since it is possible to recycle by-products generated upstream of the manufacturing process of these products, thus participating in the concept of circular economy.
Typically, the vegetable paper according to the invention comprising fibers according to the invention from tea leaves is manufactured by a papermaking process comprising the following steps: the tea leaves are mixed with a solvent in order to extract the extract from the Soluble tea in the solvent, the soluble extract in the solvent is then separated from the fibrous parts of the tea tree in order to obtain the fibers according to the invention, the fibers according to the invention are passed through a paper machine in order to manufacture vegetable paper.
Typically, a tea leaf may comprise up to 50% by weight of solvent soluble extract based on the total weight of the sheet. It is therefore necessary to adapt the process for extracting and separating the fibers according to the invention from the sheet of the extract of the soluble sheet in the solvent.
According to a particular embodiment, the solvent is an aqueous solvent, especially the solvent is water.
According to the embodiment in which the solvent is water, the extraction is carried out at atmospheric pressure and the temperature of the water is 30 ° C to 100 ° C, in particular 40 ° C to 90 ° C, more particularly from 60 ° C to 80 ° C.
Typically, the mixing time is from 5 minutes to 180 minutes, in particular from 10 minutes to 60 minutes, more particularly from 20 minutes to 45 minutes.
Before passing through the paper machine, the fibers according to the invention comprise less than 10% by weight of soluble extract in the solvent relative to the total weight of the fibers according to the invention.
The residual amount by weight of soluble extract in the solvent is measured by weighing the drained fibers before and after the extraction.
EXAMPLE 1 °) Cocoa plant paper
A vegetable fiber paper according to the invention from cocoa was manufactured according to the following method: cocoa shells were ground using a knife mill to obtain particles of the order of 1 mm . The crushed shell was then mixed with water at 70 ° C for 20 minutes, in a shell-to-water ratio of 1/10. The mixture is then centrifuged to separate the aqueous portion (cocoa shell juice) from the insoluble portion (cocoa shell fibers). The fibrous fraction is refined using a disc refiner. After refining, delignified fibers from softwood are added to the fraction of fibers according to the invention refined with a ratio of delignified fibers / fibers according to the invention of cocoa 40% / 60% to produce sheets of vegetable paper. The vegetable paper sheets are then dried on a hot plate. 2 °) Vegetable paper of coffee tree
A plant fiber paper according to the invention derived from coffee was made according to the following method: the films surrounding the coffee seeds were mixed with water at 70 ° C for 20 minutes, in a film / water ratio of 1/5 by weight. The mixture then undergoes a step of extraction in a hydraulic press to separate the aqueous portion (juice of coffee films) from the insoluble portion (fibers of coffee films). The insoluble part recovered is heated a second time at 70 ° C. for 10 minutes with an insoluble part / water ratio of 1/5 by weight. After additional extraction (by pressing), the sample is refined using a disc refiner. After refining, delignified fibers from softwood are added to the fraction of fibers according to the invention refined with a ratio of delignified fibers / fibers according to the invention of coffee of 10% / 90% in order to produce sheets of vegetable paper. The vegetable paper sheets are then dried on a hot plate. 3 °) Vegetable paper of tea tree
A plant fiber paper according to the invention from tea tree was made according to the following method: black tea leaves were mixed with water at 70 ° C for 20 minutes, in a tea / water ratio of 1 / 5 by weight. The mixture then undergoes a step of extraction in a hydraulic press to separate the aqueous part of the insoluble part (tea fibers). The insoluble part recovered is heated a second time at 70 ° C. for 10 minutes with an insoluble part / water ratio of 1/5 by weight. After additional extraction (by pressing), the sample is refined using a disc refiner. After refining, cellulosic fibers (mixture of abaca, softwood pulp and hardwood pulp with a ratio of 60/10/30) are added to refined delignified fibers with a delignified fiber / fiber ratio according to the invention of 10% / 90% by weight to make vegetable paper sheets. The vegetable paper sheets are then dried on a hot plate. 4 °) Other examples
Different examples of plant papers were obtained from the fibers of the plants and parts of plants shown in the table below, the fibers of said plants were extracted with water. The process used to obtain the exemplified plant papers is adapted so that the amount of water-soluble extracts of the plant is less than 10% by weight of dry matter of vegetable paper.
5 °) Example of designs for face masks
Vegetable mask with tea / mint fibers
A vegetable fiber paper according to the invention from tea tree and peppermint was made according to the following method: green tea leaves and mint were mixed in a ratio of 60% / 40% with water at 70 ° C for 20 minutes, in a ratio (tea + mint) / water of 1/5 by weight. The mixture then undergoes a step of extraction in a hydraulic press to separate the aqueous part of the insoluble part (tea and mint fibers). The insoluble part recovered is heated a second time at 70 ° C. for 10 minutes with an insoluble part / water ratio of 1/5 by weight. After additional extraction (by pressing), the sample is refined using a disc refiner. After refining, cellulosic fibers (abaca) are added to the refined delignified fibers with a delignified fiber / fiber ratio according to the invention of tea and mint of 1/1 by weight and a wet strength agent is added in a agent / total fiber ratio of 1/9 to make vegetable paper sheets. The vegetable paper sheets are then dried on a hot plate.
In other examples, the abaca fiber is replaced by flax fiber and the ratio of delignified fibers / plant fibers according to the invention varies from 1/9 to 1/1.
Vegetable mask with green tea fibers for hydro-interlacing
A vegetable fiber paper according to the invention from tea tree was made according to the following method: green tea leaves were mixed with water at 70 ° C for 20 minutes, in a ratio tea / water of 1 / 5 by weight. The mixture then undergoes a step of extraction in a hydraulic press to separate the aqueous part of the insoluble part (tea fibers). The insoluble part recovered is heated a second time at 70 ° C. for 10 minutes with an insoluble part / water ratio of 1/5 by weight. After additional extraction (by pressing), the sample is refined using a disc refiner. After refining, delactivated abaca fibers and 10 mm Tencel® fibers are added to the tea and mint fibers of the invention in an Abaca / Tencel® / tea ratio of 4: 1 to 5 in order to make leaves. of vegetable paper. The formed sheet is then hydro-interlaced.
In another example, the Tencel® fibers are replaced by synthetic fibers (Rayon, PET) added to the delignified fibers of abaca and fiber of the tea tree invention in a ratio of abaca / synthetic fiber / tea of 4 / 1/5. Results of analysis 1) Cocoa plant paper
The burst strength of the coffee plant paper is of the same order of magnitude as that of the standard paper but the weights of the two papers are very different.

权利要求:
Claims (19)
[1" id="c-fr-0001]
1. Vegetable paper comprising: - fibers of a plant having undergone extraction in a solvent, in particular an aqueous solvent, especially the solvent is water - less than 10% soluble extract in the solvent of the plant by weight of dry matter of the vegetable paper, wherein the amount of said fibers of the plant is at least 50% by weight relative to the total amount of fibers of the vegetable paper, in particular from 50% to 90%, especially from 60% to 80% by weight relative to the total amount of vegetable paper fibers.
[2" id="c-fr-0002]
2. Vegetable paper according to claim 1 comprising less than 5% soluble extract in the solvent of the plant by weight of dry material of the vegetable paper.
[3" id="c-fr-0003]
3. Vegetable paper according to claim 1 or claim 2 wherein the plant is selected from cocoa, coffee, tea, vine, ginger, ginko, camomile, tomato, ivy, mate, rooibos, the cucumber, a cereal or a tree, preferably the plant is selected from cocoa, coffee, tea tree.
[4" id="c-fr-0004]
4. Vegetable paper according to any one of claims 1 to 3 wherein the plant is the whole plant, part of the plant or a mixture of different parts of the plant.
[5" id="c-fr-0005]
5. Vegetable paper according to claim 4 wherein the part of the plant is selected from the tea leaf, the hull protecting the cocoa bean, the film surrounding the coffee bean, the duff beer, the grape marc, the cucumber stem or tomato leaf, especially the part of the plant is selected from the hull protecting the cocoa bean, the film surrounding the coffee bean, the beer pudding, the grape pomace.
[6" id="c-fr-0006]
6. Vegetable paper according to claim 4 wherein the part of the plant is not a part used for the manufacture of paper, especially the sapwood, the heart and the marrow of the tree.
[7" id="c-fr-0007]
7. Vegetable paper according to any one of claims 1 to 5 wherein the plant is the cocoa tree and the plant part is the hull protecting the cocoa bean.
[8" id="c-fr-0008]
8. Vegetable paper according to any one of claims 1 to 5 wherein the plant is the coffee plant and the plant part is the film surrounding the coffee seed.
[9" id="c-fr-0009]
9. Vegetable paper according to any one of claims 1 to 5 wherein the plant is the tea plant and the plant part is tea leaf.
[10" id="c-fr-0010]
10. Wrapping paper comprising the vegetable paper as defined in any one of claims 1 to 9.
[11" id="c-fr-0011]
11. Decoration paper comprising the vegetable paper as defined in any one of claims 1 to 9.
[12" id="c-fr-0012]
12. Writing paper comprising the vegetable paper as defined in any one of claims 1 to 9.
[13" id="c-fr-0013]
Toilet paper comprising the vegetable paper as defined in any one of claims 1 to 9.
[14" id="c-fr-0014]
14. Absorbent paper comprising the vegetable paper as defined in any one of claims 1 to 9.
[15" id="c-fr-0015]
Cleaning wipe comprising the vegetable paper as defined in any one of claims 1 to 9.
[16" id="c-fr-0016]
16. Cosmetic product comprising vegetable paper as defined in any one of claims 1 to 9.
[17" id="c-fr-0017]
Handkerchief comprising the vegetable paper as defined in any one of claims 1 to 9.
[18" id="c-fr-0018]
18. A papermaking process for manufacturing a vegetable paper as defined in any one of claims 1 to 9, comprising the following steps: one or more parts of the plant are mixed with a solvent in order to extract the extract from the plant soluble in the solvent, the soluble extract in the solvent is then separated from the fibrous parts of the plant to obtain the fibers according to the invention, the fibers according to the invention are passed through a paper machine so to make vegetable paper.
[19" id="c-fr-0019]
19. The method of claim 18 wherein the solvent is water and the extraction is carried out at atmospheric pressure and the temperature of the water is 30 ° C to 100 ° C, in particular 40 ° C to 90 ° C, more preferably from 60 ° C to 80 ° C.

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同族专利:

公开号 | 公开日

AU2017247615B2|2021-03-11|

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FR3049620B1|2020-06-12|

JP2019510892A|2019-04-18|

WO2017174661A1|2017-10-12|

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AU2017247615A1|2018-10-25|

ES2868673T3|2021-10-21|

EP3440260A1|2019-02-13|

CA3019637A1|2017-10-12|

US11035079B2|2021-06-15|

CN109312542A|2019-02-05|

EP3440260B1|2021-03-31|

US20190145050A1|2019-05-16|

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法律状态:
2017-02-24| PLFP| Fee payment|Year of fee payment: 2 |

2017-10-06| PLSC| Publication of the preliminary search report|Effective date: 20171006 |

2018-03-15| PLFP| Fee payment|Year of fee payment: 3 |

2019-03-13| PLFP| Fee payment|Year of fee payment: 4 |

2020-03-12| PLFP| Fee payment|Year of fee payment: 5 |

2021-03-10| PLFP| Fee payment|Year of fee payment: 6 |

优先权:

申请号 | 申请日 | 专利标题

FR1652994A|FR3049620B1|2016-04-05|2016-04-05|PLANT PAPER COMPRISING FIBERS FROM A PLANT|

FR1652994|2016-04-05|FR1652994A| FR3049620B1|2016-04-05|2016-04-05|PLANT PAPER COMPRISING FIBERS FROM A PLANT|

JP2018552209A| JP2019510892A|2016-04-05|2017-04-05|Vegetable paper containing vegetable fiber|

PCT/EP2017/058121| WO2017174661A1|2016-04-05|2017-04-05|Vegetable paper comprising fibres of a plant|

ES17715732T| ES2868673T3|2016-04-05|2017-04-05|Vegetable paper comprising fibers from a plant|

KR1020187031967A| KR20180133453A|2016-04-05|2017-04-05|Vegetable paper containing plant fibers|

CN201780030626.9A| CN109312542A|2016-04-05|2017-04-05|Plant paper comprising plant fiber|

AU2017247615A| AU2017247615B2|2016-04-05|2017-04-05|Vegetable paper comprising fibres of a plant|

US16/091,347| US11035079B2|2016-04-05|2017-04-05|Vegetable paper comprising fibres of a plant|

CA3019637A| CA3019637A1|2016-04-05|2017-04-05|Vegetable paper comprising fibres of a plant|

EP17715732.8A| EP3440260B1|2016-04-05|2017-04-05|Vegetable paper comprising fibres of a plant|

US17/343,966| US20210301468A1|2016-04-05|2021-06-10|Vegetable Paper Comprising Fibres of a Plant|

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