• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a composition for absorbing moist from a confined environment having an elevated temperature in comparison with room temperature. This composition is particularly usable when transporting food products that deteriorate in a moist environment. Correspondingly the invention further relates to a method and transportation equipment for food products using said composition. Further the invention relates to a method of manufacturing said composition for absorbing moist.
    公开号:NL2019052A
    申请号:NL2019052
    申请日:2017-06-12
    公开日:2017-12-20
    发明作者:Van Dijk Dirk；Vermeer Mike
    申请人:Lamb-Weston/Meijer V O F；
    IPC主号:
    专利说明:

    Method for transportation and transportation equipment for food products using a composition for absorbing moist
    The invention relates to a method for transportation and transportation equipment for food products, comprising a composition for absorbing moist or vaporized water. The composition is used to counteract that the food products deteriorate in a moist environment that is present during transportation. Further the invention relates to a method of manufacturing said composition for absorbing moist. NL 1036895 discloses a transportation bag for food products wherein a superabsorbent polymer is applied in said bag. The applicant remarks that superabsorbent polymer is authorized to be applied in combination with food without direct contact.
    In the applicant's still unpublished co-pending application NL 2015918 relating to a packet for french fries it is remarked that in general the prior art packet is unsuitable for french fries because the fries do not survive an extended stay or holding time in the packets without losing their bite. In the following the invention will be exemplified with reference to the transportation of french fries, although the invention is not limited to this application. As already mentioned in the introduction the invention relates to a composition which is used when transporting food products that deteriorate in a moist environment. Consequently the invention is also applicable on other food products.
    When consumers order french fries to be delivered at their home, they require that on delivery the fries still have their crispy texture. Investigations have shown that a minimum holding time for french fries of at least 20 minutes is required, whereafter the fries still must be crispy and meet a so-called crunching test to determine the crispiness of the fries by chewing. Reportedly a good crispiness requires at least five times chewing wherein the fries generate crunchiness in the mouth. The said 20 minutes corresponds to the maximum delivery time which is used in practice for delivery of fries .
    Providing the french fries on delivery or providing other food products on delivery that are sensitive to extended stays in a moist environment is normally done making use of transportation equipment, comprising a heatable but not necessarily heated enclosure for the food products. It is also possible that the enclosure arrives at an elevated temperature due to the heated food products being placed therein. One of the known commercially available means of transport comprises a bag with a closable lid, wherein a heating plate is provided that can be heated through induction. Heating the heating plate requires therefore an induction plate which may be separated from the heatable enclosure.
    For transport the food products are provided in the bag with the lid closed, and the food products are as much as possible maintained at the required temperature by means of the preheated heating plate which loses its heat over time, since during transport its heating by induction is normally interrupted. The heat in combination with the moist of the food products inside of the bag cause a high relative humidity inside of the bag which deteriorates the quality of the food products. As mentioned with the example of the french fries, the food products may take at least 20 minutes from its origin to the delivery point, and the ambition of the inventors is to provide a solution to the problem that the food products without further measures will suffer an impaired quality and lose their attractiveness for the consumer. For french fries this means that the challenge is to maintain the above-mentioned crispiness during an extended stay of at least 20 minutes in the transportation bag, corresponding to a maximum delivery time of 20 minutes for the fries. During transportation the relative humidity of the confined environment must be brought as quickly as possible as below 60%.
    According to the invention the problem is addressed by providing a method for transportation and transportation equipment for food products in accordance with one or more of the appended claims.
    Features of the invention will now be discussed with reference to different subjects of the invention.
    In a first aspect of the invention wherein the transportation equipment comprises an enclosure for the food products that is provided with a composition for absorbing moist comprising a superabsorbent polymer, in addition thereto the composition comprises glycerine or glycerol. Glycerin or glycerol are within the scope of this application interchangeable terms. Glycerine is also known by its E-number E422 and is an organic compound. Glycerol refers to the major ingredient of glycerin. Glycerol is a thick, viscous, clear, odorless liquid with a sweet taste derived from animal fat and vegetable oil. It is allowed by the US Food and Drug Administration as generally recognized as safe and complies with specifications for the Food Chemicals Codex for application with food products. It's molecular formula is CslMOH^and its technical name is propan-1,2,3 triol.
    It is found that the application of a superabsorbent polymer in combination with glycerin or glycerol can be effectively applied for absorbing moist from a heatable or heated enclosure in order to delay the deterioration of the food products quality. The moist-binding properties can be further promoted by arranging that the composition further comprises an aniogene substance, preferably NaCl. The addition of this salt is responsible for a 3 - 50% further increase of moist being bound in comparison with when the composition only comprises a mixture of a superabsorbent polymer and glycerol or glycerine .
    Suitably the superabsorbent polymer is a water binding salt. The superabsorbent polymer is preferably one selected from the group comprising poly-acrylic acid sodium salt; polyacrylamide copolymer, ethylene maleic anhydride copolymer, cross-linked carboxymethylcellulose, polyvinyl alcohol copolymers, cross-linked polyethylene oxide, and starch grafted copolymer of polyacrylonitrile.
    Particularly preferential is that the superabsorbent polymer is in contact with the glycerin or glycerol. This provides that the superabsorbent polymer attracts moist from the glycerine or glycerol so as to reduce the glycerin's water content. This in turn promotes the effectivity of the glycerin or glycerol to attract water from its environment in the enclosure .
    It is most effective when the superabsorbent polymer is provided in the form of powder, beads or pastilles. The dimensions of the beads or pastilles can be chosen to suit the situation best. The beads or pastilles can for instance have an average diameter of 1,5 mm. It is however also possible to apply larger or smaller beads or pastilles. The powder may have particles of less than 1 mm.
    To promote an effective application of the composition it is beneficial that the glycerine or glycerol and the superabsorbent polymer is provided on a carrier material, wherein it is preferred that the carrier material is a water and air permeable material. Although there is no particular preference, this carrier material may be paper. Suitably the carrier material is formed as a bag or packet.
    The invention is also embodied in a method of manufacturing a composition for absorbing moist from a confined environment having an elevated temperature in comparison with room temperature. According to the invention this method is characterized in that in a prior treatment or posttreatment of a cloth or fabric, glycerine or glycerol is provided in respectively on said cloth or fabric. The cloth or fabric can then be deemed the carrier of the glycerin or glycerol.
    According to the invention two notable embodiments of the method of manufacturing a composition for absorbing moist are proposed.
    In a first embodiment of the method, wherein glycerine or glycerol is in a prior treatment impregnated in the cloth or fabric, the method has the feature that a superabsorbent polymer is provided on the cloth or fabric, whereafter said cloth or fabric is provided between covering layers, at least one of which is water and air permeable.
    In a second embodiment of the method, wherein glycerin or glycerol is provided in an after-treatment on the cloth or fabric, the method has the feature that a superabsorbent polymer is impregnated in the cloth or fabric, whereafter said cloth or fabric is provided between covering layers, at least one of which is water and air permeable, and that the glycerin or glycerol is provided thereafter on the water and air permeable cover.
    The invention will hereinafter be further elucidated with reference to the drawing of two exemplary embodiments of an apparatus for manufacturing a composition according to the invention that is not limiting as to the appended claims. Further reference is made to the drawing of some graphs showing the results of the invention in reducing the moisture content in a bag of fries in comparison with the prior art.
    In the drawing: -figure 1 shows a first manufacturing scheme for a composition according to the invention; -figure 2 shows a second manufacturing scheme for a composition according to the invention; -figures 3, 4 and 5 show the development of the moisture content in a heated enclosure or bag filled with one kilogram of fries during a timeframe of 25 minutes.
    Whenever in the figures the same reference numerals are applied, these numerals refer to the same parts.
    Referring first to figure 1 a first embodiment of a method of manufacturing a composition for absorbing moist is shown, wherein first a prior treatment of a cloth or fabric 1 is executed, by impregnating glycerine or glycerol 2 in said cloth or fabric 1 (hereinafter further briefly referred to as "cloth"). Thereafter a superabsorbent polymer 3 and preferably also an aniogene substance is provided on the cloth 1, followed by providing said cloth 1 between covering layers 4, 5, at least one of which is water and air permeable. A first covering layer 4 is for instance a cardboard, the other covering layer 5 is then a water and air permeable cover, for instance a nonwoven material, such as paper. The superabsorbent polymer 3 is provided on the cloth 1 in the form of beads or pastilles with an average diameter of approximately 1.5 mm. This manufacturing method provides a continuous web of the composition according to the invention on a carrier embodied as the layer 1. For further application the continuous web is to be cut and sealed at its edges to secure the integrity of the packaged composition when later used in a transportation bag for transport of food products.
    Making reference now to figure 2 a second embodiment of a method of manufacturing a composition for absorbing moist is shown, wherein glycerin or glycerol 2 and preferably an an-iogene substance are provided in an after-treatment on the cloth 1. In this second embodiment a superabsorbent polymer 3 is first impregnated in the cloth 1, whereafter said cloth 1 is provided between covering layers 4, 5, at least one of which is water and air permeable. The glycerin or glycerol 2 and the aniogene substance are afterwards provided on the water and air permeable cover 5. In this second embodiment of the method of manufacturing the composition of the invention a continuous web of this composition can be provided, although it is also possible to provide a preliminary cutting of the web by cutter 6'. Figure 2 further shows that it is also possible to include a joint cutting 6 and sealing 7 operation after application of the covering layers 4, 5 to the composition so as to provide separate packets wherein the operable composition of the invention is packed and sealed, and made suitable for application in a transportation bag for transport of food products.
    Both methods of the invention for manufacturing a composition for absorbing moist share the property that the simultaneous use of glycerin or glycerol 2 and superabsorbent polymer 3 surprisingly and synergistically increases the effectiveness of the composition. The inventors believe that this is due to the combination of the water attractive property of glycerin or glycerol and the water retaining property of the superabsorbent polymer, the effect of which is particularly enhanced when the glycerin or glycerol and the superabsorbent polymer are in contact with each other. This synergistic effect is further enhanced by the addition of an aniogene substance, preferably NaCl. The effect of the aniogene substance is believed to relate to its surface-tension reducing properties. The disclosed embodiments of the method for manufacturing of the composition according to the invention thus result in separately manipulable packets containing the composition of the invention, which can be applied singularly or plural in a transportation enclosure (normally a bag) for the food products, in order to absorb excessive moist in the enclosure so as to preserve the quality of the food products as much as possible, particularly during an extended stay of the food products in the transportation bag.
    To exemplify the results of the invention reference is made hereinafter to a series of test results and to figures 3, 4 and 5, which respectively show the development of the moisture content in a heated bag filled with one kilogram of fries during a timeframe of approximately 25 minutes, wherein varying measures are taken to control the moisture content in the bag. All figures have time displayed on the X axis as an independent variable. Further all figures show on the left Y axis the temperature in degrees Celsius, and on the right the relative moisture content in the bag as a percentage. The bags are heated by a heating plate that is heated through induction .
    Figure 3 shows the situation that corresponds to the prior art wherein no specific measures are taken to control the moisture content in the bag. It is shown that at all times the moisture content in the bag remains above 70%, which deteriorates in the end the crispiness of the fries. It is known that for best results regarding the crispiness of the fries, the moisture content in the bag must drop down to below 60%.
    Figure 4 shows the situation that corresponds to the invention wherein a composition comprising only glycerin or glycerol is added to the bag. The figure shows not only a gradual decline of the moisture content in the bag to a value near to 40%, but also that the reduced moisture content results in higher temperatures in the bag in comparison with the situation of figure 3. Thus not only the crispiness of the fries benefits from the invention, but an additional advantage is that the fries can be better maintained above a desired temperature .
    In figure 5 the situation is depicted when the fries in the bag are provided with a composition comprising both glycerin or glycerol and a superabsorbent polymer. In comparison with figure 4 it is clear that in this situation the reduction of the moisture content in the bag is accelerated, wherein the eventual value of the moisture content is approximately the same as in figure 4.
    Comparative test results applied to different samples of moist absorbing tissues are shown in the following tables. The tissues are in a first test placed in a heat saving bag together with a tray of water having at the start of the test a temperature of 100°C. In this test 1 the combination of glycerine and a superabsorbent polymer was applied to a sample 1 of the tissues. In a sample 2 of this test 1 only the superabsorbent polymer was applied to the tissue. In test 2 similar samples were placed in a heated environment with a low relative humidity of 35· :. The results of both tests 1 and 2 are shown in the both tables below.
    Test 1 - preheated closed bag with a tray of water at 100°C
    Test 2 - heated environment with low relative humidity
    The above test 1 shows that the sample 1 with glycerine and the superabsorbent polymer is capable to absorb approximately 12 times as much moist as sample 2 without glycerine. Test 2 shows that in the heated environment with a low relative humidity the sample 1 with the glycerine and the superabsorbent polymer, the moist binding properties are four times better than with sample 2 that only applies the superabsorbent polymer.
    In a series of further tests the results are tested when additionally an aniogene substance (salt in the form of NaCl) is added to the combination of glycerine and the superabsorbent polymer. The results are summarized in the following tables .
    Test 1 - Glycerine, SAP and salt - tested in heat saving bag high relative humidity
    Test 2 - Glycerine, SAP and salt - tested in heat saving bag with high relative humidity
    Test 3 - Glycerine, SAP and salt - tested in heat saving bag with high relative humidity
    Test 4 - Glycerine, SAP and salt - tested in heated environment with low relative humidity
    From the above tables depicting test 1-4 the conclusion is supported that the addition of the aniogene substance (salt) further improves the moist absorbing capabilities of the mixture of glycerine with the superabsorbent polymer with approximately 3 - 50%.
    Although the invention has been discussed in the foregoing with reference to two exemplary embodiments of the apparatus for manufacturing the composition of the invention, the invention is not restricted to these particular embodiments which can be varied in many ways without departing from the invention. The discussed exemplary embodiments shall therefore not be used to construe the appended claims strictly in accordance therewith. On the contrary the embodiments are merely intended to explain the wording of the appended claims without intent to limit the claims to these exemplary embodiments. The scope of protection of the invention shall therefore be construed in accordance with the appended claims only, wherein a possible ambiguity in the wording of the claims shall be resolved using these exemplary embodiments.
    权利要求:
    Claims (21)
    [1]
    A food product transport facility, such as convenience foods such as French fries or hamburgers, comprising a package for the food products which is provided with a composition for absorbing moisture comprising a superabsorbent polymer, characterized in that the composition further comprises glycerin or glycerol.
    [2]
    Transport device according to claim 1, characterized in that the composition further comprises an aniogenic substance, preferably NaCl.
    [3]
    The transport device according to claim 1 or 2, characterized in that the superabsorbent polymer is a water-binding salt.
    [4]
    A transport device according to any one of claims 1 to 3, characterized in that the superabsorbent polymer is one selected from the group comprising polyacrylic acid sodium salt; polyacrylamide copolymer, ethylene maleic anhydride copolymer, cross-linked carboxymethyl cellulose, polyvinyl alcohol copolymers, cross-linked polyethylene oxide, and starch grafted copolymer or polyacrylonitrile.
    [5]
    A transport device according to any one of the preceding claims 1-4, characterized in that the superabsorbent polymer is in contact with the glycerin or glycerol.
    [6]
    A transport device according to any one of the preceding claims 1-5, characterized in that the superabsorbent polymer is formed as powder, granules or pastilles.
    [7]
    The transport device according to any one of the preceding claims 1-6, characterized in that the glycerin or glycerol and the superabsorbent polymer are provided on a carrier material.
    [8]
    A transport provision according to claim 7, characterized in that the carrier material is a water and air-permeable material.
    [9]
    Transporting device according to claim 7 or 8, characterized in that the carrier material is shaped as a bag or package.
    [10]
    A method for transporting food products in a package provided with a composition for absorbing moisture comprising a superabsorbent polymer, characterized in that said composition further comprises glycerin or glycerol.
    [11]
    A method according to claim 11, characterized in that the composition further comprises an aniogenic substance, preferably NaCl.
    [12]
    A method according to claim 10 or 11, characterized in that the superabsorbent polymer is a water-binding salt.
    [13]
    A method according to any one of claims 10 to 12, characterized in that the superabsorbent polymer is one selected from the group comprising polyacrylic acid sodium salt; polyacrylamide copolymer, ethylene maleic anhydride copolymer, cross-linked carboxymethyl cellulose, polyvinyl alcohol copolymers, cross-linked polyethylene oxide, and starch grafted polyacrylonitrile copolymer.
    [14]
    A method according to any one of the preceding claims 10-13, characterized in that the superabsorbent polymer is in contact with the glycerin or glycerol.
    [15]
    Method according to any of the preceding claims 10-14, characterized in that the superabsorbent polymer is in the form of powder, granules or pastilles.
    [16]
    A method according to any one of the preceding claims 10-15, characterized in that the glycerin or glycerol and the superabsorbent polymer are applied to a carrier material.
    [17]
    A method according to claim 16, characterized in that the carrier material is a water and air permeable material.
    [18]
    A method according to claim 16 or 17, characterized in that the carrier material is shaped as a bag or package.
    [19]
    A method for manufacturing a moisture-absorbing composition from a sealed environment with an elevated temperature as compared to room temperature, characterized in that, in a pre-treatment or post-processing of a substance or fabric, glycerin or glycerol is applied to on said substance or fabric.
    [20]
    A method according to claim 19, wherein the glycerin or glycerol is pre-treated in the fabric or fabric, characterized in that a superabsorbent polymer is applied to the fabric or fabric, after which said fabric or fabric is applied between two cover layers, at least one of which is water and air permeable.
    [21]
    A method according to claim 19, wherein glycerin or glycerol is applied to the fabric or fabric in a post-processing, characterized in that a superabsorbent polymer is impregnated into the fabric, after which said fabric is applied between coatings, at least one of which is water and is air permeable, and that the glycerin or glycerol is applied to the water and air permeable cover layer.
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    同族专利:
    公开号 | 公开日
    NL2016949B1|2017-12-21|
    NL2019052B1|2018-12-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH0112539B2|1984-05-09|1989-03-01|Showa Denko Kk|
    DE19505708A1|1995-02-20|1996-08-22|Stockhausen Chem Fab Gmbh|Flat, superabsorbent structures|
    NL1036895C2|2009-04-23|2010-10-26|Dupon Nederland B V|HOLDER FOR A VAPORIZED FOOD PRODUCT.|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL2016949A|NL2016949B1|2016-06-13|2016-06-13|Composition for absorbing moist; method and transportation equipment for food products using said composition; and method of manufacturing said composition for absorbing moist|
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