• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    A support based on cellulosic fibers, at least one side of which is covered with a composition obtained by a mixture in an aqueous medium comprising: a) at least one water-soluble polymer (PH) comprising hydroxyl functions, b) at least one lactone substituted with at least one linear or branched and / or cyclic C8-C30 hydrocarbon chain which may contain heteroatoms, c) and at least one crosslinking agent. Manufacturing process and use
    公开号:FR3026345A1
    申请号:FR1459114
    申请日:2014-09-26
    公开日:2016-04-01
    发明作者:Menno Dufour；Violaine Durand
    申请人:Ahlstrom Corp；
    IPC主号:
    专利说明:

    [0001] FIELD OF THE INVENTION The invention relates to a new support based on cellulosic fibers, as well as to its method of manufacture. BACKGROUND OF THE INVENTION
    [0002] The field of use of the present invention relates to the adhesive tape industry. According to one particular embodiment, the invention relates to a crepe paper for its application as a support for adhesive tapes, especially masking tapes used in painting.
    [0003] PRIOR ART The adhesive tapes generally consist of a fibrous support, in particular crepe paper, to which an adhesive layer is applied on at least one side.
    [0004] These adhesive tapes have applications in a variety of fields including paint, packaging, insulation, coating, the medical industry, the electronics industry, the automotive and aerospace industries, DIY, and so on. Crepe paper is generally characterized by low basis weight, considerable elongation, flexibility, porosity and thickness. These characteristics depend on several parameters related to the papermaking steps, especially the crepe step. In practice, crepe paper has a basis weight of between 32 and 80 g / m 2, and preferably around 39 g / m 2. The elongation of the crepe paper is 4 to 20% in the direction, see more for some application (masking tape for curved lines). The manufacture of a crepe paper essentially comprises three conventional steps, namely: - the formation of the sheet, - the pressing and - the drying.
    [0005] In particular, the pressing and drying phases can be performed on a single drying cylinder (ie Yankee cylinder). At the outlet of the cylinder, the sheet is creped with special scrapers, before winding.
    [0006] In general, the manufacture of the masking tape is done in three steps. In the first step, the crepe paper constituting the support is saturated by impregnation of a binder or a latex, generally of the SBR latex type (for example 10 to 20 g / m2 of SBR latex (Styrene-Butadiene Rubber)). This first saturation step makes it possible: to improve the physical properties of the substrate in order to allow a subsequent treatment; - create a barrier to prevent migration of the adhesive into the paper; - ensure good cohesion with the release agent and adhesive to prevent delamination. The second step consists in covering one side of the saturated crepe paper by treatment with a non-sticking agent (for example 4 g / m 2 of acrylic latex or silicone).
    [0007] Finally, a third step is to apply the adhesive on the second side of the crepe paper (usually between 30 and 40 g / m2) to form the final masking tape. The treatment of the third step makes it possible to condition the ribbon in the form of a roll while facilitating its unfolding by the user.
    [0008] In practice, the manufacturer of adhesive tapes obtains a crepe paper from the paper manufacturer. It saturates the paper and coats it on at least one side of a nonstick layer. He then applies the adhesive layer to the other side to obtain a ribbon. The process as a whole thus requires 4 distinct steps. In addition, paper making and subsequent processing are not done online, which necessarily impacts the cost. In addition, the step of saturation of the crepe paper by the binders may be incomplete or non-homogeneous, when it is performed offline. This has the effect of giving the ribbon imperfect sealing vis-à-vis the paint. Indeed, masking tapes often pose the problem of tiny infiltrations of the paint along the lateral edges of the tape, thus generating an imperfect line of partition and masking.
    [0009] In order to remedy all these drawbacks, the Applicant has developed a new ribbon support based on cellulosic fibers, in particular crepe paper, requiring a limited number of manufacturing steps. In addition, the support has the advantage of being ready to be coated with adhesive by the manufacturer of adhesive tapes.
    [0010] SUMMARY OF THE INVENTION The subject of the present invention is a support, in particular adhesive tape based on cellulosic fibers, in particular a crepe paper, as well as its method of manufacture and its use as a support in the manufacture of adhesive tapes, more particularly masking ribbons. The cellulosic fiber-based support, particularly the crepe paper according to the invention, may be useful in other applications where the release properties of at least one side of the support are desired, such as for medical adhesive tapes. Thus, the present invention makes it possible to obtain a crepe paper for masking tapes, which: has in particular at least the same non-stick and dry or wet strength properties as a saturated crepe paper, coated on at least a side of a nonstick layer, prepared in a conventional manner, is continuously prepared on a single production line, provides a masking tape having peeling properties, and a tack, conforming to the standards of manufacture after In practice, the invention consists in coating at least one side of the support with an aqueous composition containing alkyl chains, said composition acting both as a saturation agent and as a release agent.
    [0011] More specifically, the subject of the invention is a support, in particular adhesive tape, based on cellulosic fibers, at least one face of which is covered with a composition obtained by a mixture in an aqueous medium comprising: a) at least one polymer water-soluble (PH) comprising hydroxyl functions, b) at least one lactone substituted with at least one linear or branched and / or cyclic C8-C30 hydrocarbon-based chain which may contain heteroatoms. c) and at least one crosslinking agent. Advantageously, the substituted lactone is a diketene molecule.
    [0012] Advantageously, said support based on cellulosic fibers is a crepe paper.
    [0013] In general, the cellulosic support, in particular the crepe paper, comprises cellulosic fibers in proportions of between 80 and 99% by weight. Advantageously, the refining of the fibers is between 20 and 50 ° SR, preferably between 30 and 40 ° SR.
    [0014] By water-soluble polymer is meant a polymer that is soluble in water or in an aqueous medium. Advantageously, said water-soluble polymer comprising hydroxyl functional groups is chosen from the group comprising: polyvinyl alcohol (PVA); starch; oxidized starch; esterified starch; etherified starch; alginate; carboxymethylcellulose (CMC); hydrolysed or partially hydrolysed vinyl acetate copolymers, which may be obtained, for example, by the hydrolysis of ethylene vinyl acetate (EVA), or vinyl chloride - vinyl acetate, N-vinylpyrrolidone - vinyl acetate, and maleic anhydride - vinyl acetate.
    [0015] In an advantageous embodiment, said water-soluble polymer is PVA, the hydrolysis rate of which is advantageously at least 95% and the molecular mass of which is preferably between 5,000 and 1,000,000 g / mol, advantageously between 10,000 and 150,000 g / mol.
    [0016] The diketene molecule, especially when it is substituted by alkyl chains (AKD of its acronym Alkyl Ketene Dimer) is a dimerized ketene, well known in the paper industry in particular to improve the hydrophobicity.
    [0017] AKD is synthesized from fatty acid chloride. In the paper industry, it is used at a rate of 0.15%, ie 1.5 kg of AKD per tonne of paper. In this case, it is mixed as an emulsion with the cellulose fibers in the wet part of the paper machine.
    [0018] The diketene function of AKD, mixed with the paper fibers, reacts particularly with the hydroxyl functions of cellulose. Otherwise, it hydrolyzes in the presence of water.
    [0019] Advantageously, the diketene molecule of the invention has the following structure: ## STR1 ## where R1 and R2 are independently of each other linear or branched and / or cyclic C8-C30 hydrocarbon chains which may contain heteroatoms. Even more preferably, the diketene molecule may be selected from the group consisting of: the diketene molecule of structure: R2 With R1 and R2 = linear hydrocarbon chain, branched and / or cyclic, saturated and / or unsaturated with 8 to 30 carbon atoms . Examples of saturated linear chains: octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl, heneicosyl, docosyl, tricosyl, tetracosyl, pentacosyl, hexacosyl, heptacosyl, octacosyl, nonacosyl , triacontyl. Examples of unsaturated linear chains: octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, nonadecenyl, eicosenyl, heneicosenyl, docosenyl, tricosenyl, tetracenyl, pentacosenyl, hexacenyl, heptacenyl, octacenyl, nonacosenyl , triacontenyl, etc. Advantageously, the crosslinking agent used in the composition of the invention is chosen from the group comprising: CHO-Y-CHO, with Y = linear or branched and / or cyclic hydrocarbon-based chain which may contain heteroatoms; polyaldehydes, polyisocyanates. It can also be the adipic acid / epoxypropyl diethylenetriamine copolymer (CAS No. 25212-19-5). Even more preferably the crosslinking agent is glyoxal. WO2010 / 141277 also describes a carrier coated with a water-soluble polymer, in this case PVA. However, prior to coating, the support is treated with glyoxal which allows to crosslink and retain the PVA on the support. This treatment does not give the support non-stick properties.
    [0020] Without wishing to be bound by any theory, the Applicant has noticed that aliphatic chains, especially waxes (carnauba for example) could be used as anti-adhesive agents when they cover one side of the support. However, because of their low melting point, the waxes tend to migrate into the adhesive once in contact with the latter, during packaging for example. This has the effect of reducing the adhesive strength of the tape during its final application on a substrate. One way to avoid this phenomenon would be to immobilize the fatty or aliphatic chains on the support. Thus and without wishing to be bound by any theory, the Applicant has found that the alkylated diketene in an aqueous coating mixture with the water-soluble polymer is capable of reacting with the latter, forming covalent bonds with the hydroxyl functions. This would have the effect of immobilizing the aliphatic chains carried by the diketene on the water-soluble polymer (PH). The presence of crosslinking agent in the coating mixture makes it possible to anchor and immobilize the polymer PH, reacted with the diketene, on a support based on cellulosic fibers. According to a particular embodiment of the invention, the composition used to treat at least one side of a crepe paper comprises: PVA, advantageously hydrolysed to 95%, as a water-soluble polymer, a diketene molecule having the following structure: ## STR2 ## with R 1 selected from the group consisting of tetradecyl (C 14), hexadecyl (C 16) and octadecyl (C 18), and R 2 selected from the group consisting of tetradecyl (C 14), hexadecyl (C 16) and octadecyl (C 18), and glyoxal as crosslinking agent. According to a particular embodiment of the invention, the composition used comprises, in dry weight percentage: between 50 and 99% of water-soluble polymer (PH), advantageously between 60 and 90%, between 1 and and 50% of diketene, advantageously between 10 and 40%, between 1 and 20% of crosslinking agent, advantageously between 3 and 15%. The support based on cellulosic fibers, in particular crepe paper, is covered on at least one side of the composition according to the invention. Advantageously, the composition represents between 1 and 20 g / m 2 dry. In general, the support of the invention has a basis weight of between 3 and 10 g / m 2.
    [0021] In practice, the crepe paper has a basis weight of between 32 and 80 g / m 2, and preferably around 39 g / m 2. The elongation of the crepe paper is 4 to 20% in the direction, see more for some application (masking tape for curved lines). This elongation rate or elongation ability is particularly advantageous for crepe paper applications as a masking tape in the paint. Indeed, a good rate of elongation allows better handling and shaping ribbon. According to another object, the present invention also relates to a method of manufacturing the support, in particular based on crepe paper according to the invention. Said method comprises the following steps: 1) formation of a support based on cellulosic fibers; 2) preparing a composition by aqueous mixing of: at least one water-soluble polymer comprising hydroxyl functions. at least one lactone substituted with at least one linear or branched and / or cyclic C8-C30 hydrocarbon-based chain which may contain heteroatoms; and at least one crosslinking agent. 3) coating at least one side of the support with said composition, 4) drying35 Sleeping techniques known to those skilled in the art further include sizepress, metering-size-press, sleeping scarf, sleeping bar, sleeping Champion ", air knife coating, scraping blade coating, sliding blade coating, single layer and multilayer curtain coating, reverse roll coating, spray coating, spray coating, LAS coating (Liquid Application System) ), kiss coating, foam coating and any surface treatment process by coating. As already mentioned, the manufacture of the crepe paper according to the invention is done on a single production line, where the crepe paper is prepared from a pulp of cellulosic fibers, creped and then coated by the composition according to the invention. 'invention. Downstream of the paper machine, the coated crepe paper is ready to be coated with glue, preferably on the face opposite to that treated with the composition of the invention, so as to form adhesive tapes, for example masking tapes. .
    [0022] According to another object, the present invention relates to a masking tape comprising a crepe paper according to the invention. In practice, the untreated side of the nonstick composition is covered with an adhesive. It also relates to the use of the support described above for the manufacture of a masking tape. The invention and the advantages thereof will become more apparent from the following examples given to illustrate the invention and not in a limiting manner.
    [0023] EXAMPLES OF THE INVENTION 1: Comparative Test A masking tape (Master Tape TM Classic 100) crepe paper having a basis weight of 39 g / m 2 was treated on one of its faces by coating a composition obtained by aqueous mixture according to the invention, at a rate of 5 g / m 2 dry. The composition comprises, in dry weight percentage: - 46% (Celvol® 28/99) (or else 46% of Perfectamyl® A4692 starch), dry, 35-46% of dry AKD (Aquapelc) J215 from Ashland), - 8% of Glyoxal (Cartilage TSI of Clariant). The resulting paper has a basis weight of 44 g / m2.
    [0024] This paper obtained is compared with a crepe paper of the same type (Master Tape TM Classic 100 / 39g / m2) treated with 10g / m2 of the latex SBR (Styron XZ 97235.00) and 4g / m2 of an acrylic nonstick agent (Primal® R-550 from DOW).
    [0025] The following comparator table summarizes the mechanical properties that were measured under dry and wet conditions, the results are in: Invention: Master tape 100 (39g / m2) + 10g / m2 of SBR latex + (4g / m2) acrylic nonstick agent. Master tape 100 (39g / m2) + 5g / m2 PVA + AKD + Glyoxal Base mass (g / m2) 44 53 dry tensile strength MD (kN / m) - elongation (%) 2.37 - 11.6 2.72 - 13 dry tensile strength CD (kN / m) 1.23 1.22 tensile strength in wet state MD (kN / m) 1.2 1.32 tensile strength in wet state CD (kN / m) 0.59 0.5 Cobb 60sec (g / m2) 13 12 Non-stick power (N / 5cm) 5.8 7.6 2: Anti-adhesion test: A 60 g / m2 crepe paper was coated with various aqueous compositions by size press treatment. The dry deposit of these compositions was between 6 and 7 g / m 2: In parallel, the aqueous compositions comprise: - PVA (Moviol® 4/98) (or else Perfectamyl® starch A4692)), - AKD (Aquapel ° J215 from Ashland) - Glyoxal (CAS No: 107-22-2) (Cartabond® TSI from Clariant), - Water.
    [0026] The test applied is the FINAT FTM 1 test. This test consists in evaluating the adaptation of a non-stick support to the rolling by a PSA adhesive.
    [0027] Sample 1: A piece of commercial masking tape (COTEKA de Bricomarché, 5 cm width) is applied using a 5 kg roll on the non-stick side of another piece of COTEKA® tape. The peel forces are measured at a speed of 300 mm / min with an angle of 1800.
    [0028] Sample PVA / AKD - 70/30: A piece of commercial masking tape (COTEKA® from Bricomarché, 5 cm width) is applied using a 5 kg roll on the face of a piece of crepe paper coated with the composition of the invention comprising 70 parts of PVA for 30 parts of AKD (ie 64.4% of PVA, 27.6% of AKD and 8% of glyoxal, by weight). Sample PVA / AKD - 60/40: A piece of commercial masking tape (COTEKA® from Bricomarché, 5 cm width) is applied using a 5 kg roll on the face of a piece of crepe paper coated with the composition of the invention comprising 60 parts of PVA for 40 parts of AKD (ie 55.2% of PVA, 36.8% of AKD and 8% of glyoxal, by weight). Sample PVA / AKD - 50/50: A piece of commercial masking tape (COTEKA® from Bricomarché, 5 cm width) is applied using a 5 kg roll on the face of a piece of crepe paper coated with the composition of the invention comprising 50 parts of PVA per 50 parts of AKD (ie 46% of PVA, 46% of AKD and 8% of glyoxal). Release force standard Release force (N / 5cm) Sample 1 (COTEKA®) 7,24 Sample PVA / AKD - 70/30 8,26 Sample PVA / AKD - 60/40 7,08 Sample PVA / AKD - 50/50 5.87 It is found that the peel forces of the invention are at the level of the commercial product, between 5 and 8 N / 5 cm, and they vary according to the amount of AKD introduced into the mixture. The greater the amount of AKD in the mixture, the lower the peel strength. This indeed shows the anti-adhesion property of the alkyl chains present in the AKD30 3. FINAT FTM test 11 - subsequent adhesion The "subsequent adhesion release" is the force required at a given speed and angle, to tear off a tape covered with adhesive bonded to a standard test plate, this strip having been previously in contact with the nonadhesive coated surface of a support of the same kind, under specific conditions of temperature and humidity. The purpose of this test is to measure the possible transfer of anti-adhesive into the adhesive layer. The subsequent adhesion percentage is expressed as the ratio of the measured adhesion compared to adhesion achieved by a similar control strip not in contact with a non-stick coated backing. The adhesion value of the control band was measured at 10.97 N / 5cm. Subsequent Separation Force Separation Force (N / 5cm)% Loss / Gain Sample 1 (COTEKA®) 10.52 -4.1% Sample PVA / AKD - 70/30 10.43 -4.9% Sample PVA / AKD - 60/40 10.45 -4.7% Sample PVA / AKD-50/50 9.91 -9.6% The loss of adhesion strength of the supports related to the invention shows values similar to the commercial product. There is therefore little or no transfer of AKD into the adhesive. 4: Peeling force after aging test under pressure (70 g / cm 2) at room temperature according to the FINAT FM 10 test 25 A commercial masking tape (COTEKA de Bricomarché, 5 cm width) is applied with the help of a 5 kg roll on the crepe papers and COTEKA® ribbons under the same conditions as for example 2. The samples are pressurized (70 g / cm 2) at room temperature (23 ° C. and 50% humidity). ) for 20 hours. They are then conditioned for at least 4 hours at 23 ° C. and 50% humidity. The peel forces are measured at a speed of 300 mm / min at an angle of 180 °, FINAT FM1 test.
    [0029] Standard Separation Force Separation Force (N / 5 cm) Sample 1 2 3 Mean% Loss / Gain Sample 1 (COTEKA®) 7,12 7,23 6,88 7,08 -2,26 Sample PVA / AKD-70 / 30 7,57 7,31 7,56 7,48 -9,41 Sample PVA / AKD - 60/40 7,67 6,78 6,72 7,06 -0,28 Sample PVA / AKD - 50/50 5.63 5.63 5.88 5.71 -2.61 The values are compared with the values of Example 2 (Separation force before aging test). It can be seen as well that for the commercial product as for the supports of the invention, that the variation of the force is small (between a loss of 2 to 9%) and that consequently the peel forces are stable over time under pressure at room temperature. 5. FINAT FTM test 11 - subsequent adhesion after aging at room temperature The "subsequent adhesion release" is the force required at a given speed and angle, to tear off an adhesive-coated tape bonded to a standard test plate, this tape having previously been in contact with the nonadhesive coated surface of a support of the same nature, under specific conditions of temperature and humidity. The percent of subsequent adhesion is expressed as the ratio of measured adhesion versus adhesion achieved by a similar control strip not in contact with a non-stick coated backing. The adhesion value of the control strip was measured at 10.97 N / 5cm. Release strength (N / 5 cm)% loss / Gain Sample 1 (COTEKA®) 10.02 -8.6 Sample PVA / AKD-70/30 10.41 -5.1 Sample PVA / AKD-60/40 9, 84 -10.3 Sample PVA / AKD-50/50 9.41 -14.22 The loss of adhesion strength of the supports related to the invention shows values similar to the commercial product. There is thus little or no transfer of AKD in the adhesive, the prototype composed of 50 parts of AKD shows a lower value, implying a possible slight migration of AKD in the adhesive. 6: Peel strength after aging test under pressure (70 g / cm 2) at 70 ° C according to the FINAT FM 10 test A commercial masking tape (COTEKAR de Bricomarché, 5 cm width) is applied with the aid of a 5 kg roll on the crepe papers and COTEKAR ribbons under the same conditions as for example 2. The samples are pressurized (70 g / cm 2) at 70 ° C. for 20 h. They are then conditioned for at least 4 hours at 23 ° C. and 50% humidity. The peel forces are measured at a speed of 300 mm / min at an angle of 180 °, FINAT FM1 test.
    [0030] Standard Release Release force (N / 5cm)% loss / Gain Sample 1 (cOTEKA®) 8.26 14.09 Sample PVA / AKD - 70/30 9.89 19.78 Sample PVA / AKD - 60/40 10.68 50,92 Sample PVA / AKD-50/50 9,11 55,28 The evolution of the peel strength of the support of the invention containing 30 parts of AKD shows an evolution of its non-adherent property similar to the commercial product ( between 15 and 20%), against the other two samples of the invention show a relatively significant evolution (+ 50%). 7: FINAT FTM 11 Test - subsequent adhesion after aging at 70 ° C The "subsequent adhesion release" is the force required at a given speed and angle, to tear off an adhesive-coated tape bonded to a standard test plate, this strip having previously been in contact with the nonadhesive coated surface of a support of the same nature, under specific conditions of temperature and humidity.
    [0031] The subsequent adhesion percentage is expressed as the ratio of the measured adhesion compared to adhesion achieved by a similar control strip not in contact with a non-stick coated backing. The adhesion value of the control strip was measured at 10.97 N / 5cm.
    [0032] Subsequent Separation Force Separation Force% Loss / Gain (N / 5 cm) Sample 1 (COTEKA®) 9.76 -11 Sample PVA / AKD - 70/30 10.01 -8.7 Sample PVA / AKD - 60 / 40 9,21 -16 Sample PVA / AKD-50/50 7,43 -32,2 The loss of adhesion strength of the support of the invention containing 30 parts of AKD shows values similar to the commercial product. There is therefore little or no transfer of AKD in the adhesive on this prototype, however, the prototype composed of 50 parts of AKD shows a much lower value (loss of more than 30% of adhesion) , implying a probable migration of AKD in the adhesive. 8: Peel strength after aging (7 days) at high temperature (65 ° C) and high humidity (85% relative humidity) - Test AFERA # 4003 (EN 12024). A commercial masking tape (COTEKA Bricomarché, 5 cm width) is applied using a 5 kg roll on the crepe papers of the invention, as well as on itself. The samples are then packaged as (without pressure) in a climatic chamber at 65 ° C and 85% humidity for 7 days (AFERA test # 4003). The peel forces are then measured at a speed of 300 mm / min at an angle of 180 °. Sample Strength of Force% (peel strength: N / 5cm) initial peeling peel after evolution aging Sample 1 (cOTEKA®) 7.24 9.99 + 38% Sample PVA / AKD - 70/30 8.26 9.95 + 20% Sample PVA / AKD - 60/40 7,08 9,37 + 32% Sample PVA / AKD - 50/50 5,87 8,34 + 42% It can therefore be seen that the crepe papers of the invention have a similar evolution see better (more stable peel strength in the PVA / AKD - 70/30 mix) than the commercial product (ie: COTEKA °). 5 10 2. 15 3. 20 4. 25 5. 35
    权利要求:
    Claims (4)
    [0001]
    REVENDICATIONS1. A support based on cellulosic fibers, at least one side of which is covered with a composition obtained by a mixture in an aqueous medium comprising: a) at least one water-soluble polymer (PH) comprising hydroxyl functions, b) at least one lactone substituted with at least one linear or branched and / or cyclic C8-C30 hydrocarbon chain which may contain heteroatoms, c) and at least one crosslinking agent. Support according to claim 1, characterized in that it is a crepe paper. Support according to one of claims 1 or 2, characterized in that the water-soluble polymer PH is selected from the group comprising: PVA; starch; oxidized starch; esterified starch; etherified starch; alginate; CMC; hydrolysed or partially hydrolysed vinyl acetate copolymers, which can be obtained by the hydrolysis of ethylene - vinyl acetate (EVA), or vinyl chloride - vinyl acetate, N - vinylpyrrolidone - vinyl acetate, and maleic anhydride - vinyl acetate. Support according to one of Claims 1 to 3, characterized in that the diketene molecule has the following structure: ## STR1 ## R 1 and R 2 being independently of each other linear or branched C 8 -C 30 hydrocarbon chains and or cyclic which may contain heteroatoms. Support according to one of claims 1 to 4, characterized in that the crosslinking agent is selected from the group comprising: CHO-Y-CHO, Y being a linear or branched and / or cyclic hydrocarbon chain which may contain heteroatoms, polyaldehydes , polyisocyanates, adipic acid / epoxypropyl diethylenetriamine copolymer.6. Support according to one of claims 1 to 5, characterized in that - the water-soluble polymer PH is PVA, - the diketene molecule has the following structure: R2 0 0 with R1 selected from the group comprising tetradecyl (C14), hexadecyl ( C16) and octadecyl (C18) 'and R2 selected from the group consisting of tetradecyl (C14), hexadecyl (C16) and octadecyl (C18), and glyoxal as crosslinking agent. 7. Support according to one of claims 1 to 6 characterized in that the composition comprises dry weight percentage: between 50 and 99% of water-soluble polymer (PH), preferably between 60 and 90%, between 1 and 50% of diketene advantageously between 10 and 40%, between 1 and 20% of crosslinking agent, advantageously between 3 and 15%. 8. Support according to claim 1, characterized in that the composition is dry weight, between 1 and 20 g / m 2 relative to the surface of the support. 9. Support according to claim 1, characterized in that it has a basis weight of between 3 and 10 g / m2. 10. A method of manufacturing a support according to one of claims 1 to consolidating the following steps: 1) forming a support based on cellulosic fibers;
    [0002]
    2) preparation of a composition by aqueous mixing of: a) at least one water-soluble polymer having hydroxyl functions b) at least one lactone substituted with at least one C8-C30 hydrocarbon chain, linear or branched and / or cyclic may contain heteroatoms, c) and at least one crosslinking agent
    [0003]
    3) coating at least one side of the support with said composition.
    [0004]
    4) drying.4011. Use of the support object of one of claims 1 to 9 for the manufacture of a masking tape. 12. Masking tape comprising a support according to one of claims 1 to 9.
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    2021-08-31| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1459114A|FR3026345B1|2014-09-26|2014-09-26|CELLULOSIC FIBER BASE, METHOD FOR MANUFACTURING THE SAME, AND USE AS A MASKING RIBBON|FR1459114A| FR3026345B1|2014-09-26|2014-09-26|CELLULOSIC FIBER BASE, METHOD FOR MANUFACTURING THE SAME, AND USE AS A MASKING RIBBON|
    EP15767547.1A| EP3198080B1|2014-09-26|2015-09-25|Cellulose fiber-based substrate, its manufacturing process and use as masking tape|
    RS20211081A| RS62278B1|2014-09-26|2015-09-25|Cellulose fiber-based substrate, its manufacturing process and use as masking tape|
    ES15767547T| ES2885849T3|2014-09-26|2015-09-25|Cellulose fiber based substrate, its manufacturing process and use as masking tape|
    PL15767547T| PL3198080T3|2014-09-26|2015-09-25|Cellulose fiber-based substrate, its manufacturing process and use as masking tape|
    PCT/EP2015/072140| WO2016046381A1|2014-09-26|2015-09-25|Cellulose fiber-based substrate, its manufacturing process and use as masking tape|
    CN201580052231.XA| CN106715627B|2014-09-26|2015-09-25|Cellulose fiber-based substrate, method for the production thereof and use as masking tape|
    US15/514,214| US10676592B2|2014-09-26|2015-09-25|Cellulose fiber-based substrate, its manufacturing process and use as masking tape|
    US16/895,316| US20200299550A1|2014-09-26|2020-06-08|Biodegradable cellulose fiber-based substrate, its manufacturing process, and use in an adhesive tape|
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