WO2020060215A1 - Film d'emballage alimentaire bloquant les uv et son procédé de fabrication - Google Patents

Film d'emballage alimentaire bloquant les uv et son procédé de fabrication Download PDF

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Publication number
WO2020060215A1
WO2020060215A1 PCT/KR2019/012126 KR2019012126W WO2020060215A1 WO 2020060215 A1 WO2020060215 A1 WO 2020060215A1 KR 2019012126 W KR2019012126 W KR 2019012126W WO 2020060215 A1 WO2020060215 A1 WO 2020060215A1
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WO
WIPO (PCT)
Prior art keywords
film
food packaging
substrate
forming
barrier layer
Prior art date
Application number
PCT/KR2019/012126
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English (en)
Korean (ko)
Inventor
이슬비
조소현
박나영
최영주
윤찬석
Original Assignee
주식회사 에버켐텍
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Publication of WO2020060215A1 publication Critical patent/WO2020060215A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7244—Oxygen barrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging

Definitions

  • the present invention relates to a film for a food packaging material and a method for manufacturing the same.
  • Food packaging materials used in the related art include metal, glass, paper, and plastic, and among them, metal foil such as aluminum foil, processed paper, and various plastic film products are used.
  • Metal packaging materials have high mechanical strength and high barrier properties against external environments such as moisture, oxygen, and ultraviolet rays. However, the weight is heavier than that of plastic, and when it comes into contact with acidic food, rust may be stiff and long-term storage may be difficult. Paper packaging materials are relatively easy to process, rich in raw materials, low cost, and recyclable. However, although paper packaging is excellent in eco-friendliness, it is weak to moisture and has limitations in the types of foods that can be packaged.
  • Plastic packaging materials are generally light and excellent in transparency, and also have high physical strength, so they can be used in various applications. However, the merits of plastics with little corrosion or oxidation have an adverse effect on the environment and may also prevent foods from maintaining proper freshness.
  • These food packaging materials are generally required to have moisture and oxygen barrier properties for food preservation, and most foods contain fats and oils, and thus may be deteriorated by light, and thus must have light barrier properties.
  • packaging using aluminum is mainly used, but in this case, there is a problem in that the packaging material is opaque, so that the contents cannot be checked and the metal detector inspection is also impossible.
  • the present invention provides a UV barrier food packaging film comprising a barrier layer comprising a natural product, in order to overcome the disadvantages of the conventional food packaging material as described above.
  • the film for food packaging materials of the present invention can effectively block oxygen and moisture by including a natural product in the blocking layer, and also includes a UV absorbing compound in the blocking layer to effectively maintain the transparency of the film for food packaging materials while maintaining high energy-efficient UV rays. Can be blocked.
  • a film for a food packaging material including; a barrier layer comprising a natural product and a UV absorbing compound disposed on the first substrate.
  • Natural products UV absorbing compounds; Fillers; And a solvent; is provided, a composition for forming a barrier layer.
  • Forming a blocking layer comprising a natural product and a UV absorbing compound on the first substrate includes,
  • the step of forming the blocking layer uses a composition for forming a blocking layer
  • the composition for forming the barrier layer is provided with a method for producing a film for food packaging materials, including natural products, UV absorbing compounds, fillers, and solvents.
  • the film for food packaging material according to an embodiment of the present invention effectively prevents decay of food, has low oxygen permeability and low water permeability, and has sufficient transparency while having high barrier properties to UV.
  • Figure 1 shows the results of measuring the UV transmittance of the film for food packaging and comparative example film according to an embodiment of the present invention.
  • a layer or member when a layer or member is said to be located “on” another layer or member, this means that another layer or member is in contact with another layer or member, as well as when another layer or member is in contact with the other layer or member. This includes the case where another member is present.
  • a barrier layer comprising a natural product and a UV absorbing compound, disposed on the first substrate.
  • the film for food packaging materials effectively prevents food spoilage, has low oxygen permeability and low water permeability, and has sufficient transparency while having high UV barrier properties.
  • the film for food packaging materials includes a natural product and a UV absorbing compound in the barrier layer.
  • the natural product may include one or more of proteins and carbohydrates.
  • the natural product may include a protein.
  • the protein may be a protein derived from natural products.
  • the protein is whey protein, concentrated whey protein, soy protein isolate (SPI), rice protein isolate (RPI), oat protein isolate (OPI), pea protein isolate , PPI), casein, sodium caseinate, corn zein, gelatin, wheat protein, or any combination thereof.
  • the protein forms a three-dimensional network structure in the blocking layer to provide a blocking layer having a high level of oxygen barrier properties, moisture barrier properties and transparency. You can.
  • the natural product may include carbohydrates.
  • the natural product may include protein and further include carbohydrates.
  • the carbohydrate includes at least one compound selected from monosaccharides, disaccharides, and polysaccharides.
  • the carbohydrate may include polysaccharides, for example, pullulan, carrageenan, chitosan, starch, starch, agar, pectin or Any combination of these may be included, but is not limited thereto.
  • the carbohydrates form a three-dimensional network structure in the barrier layer, or structurally support the three-dimensional network structure of the protein, thereby providing a high level of oxygen barrier properties and moisture barrier properties. And a barrier layer having transparency.
  • the content of the natural product may be 5 parts by weight to 99 parts by weight.
  • the content of the natural product may be 10 parts by weight or more, or 25 parts by weight or more, or 30 parts by weight or more per 100 parts by weight of the barrier layer.
  • the content of the natural product may be 85 parts by weight or less, or 80 parts by weight or less, or 75 parts by weight or less per 100 parts by weight of the barrier layer.
  • the UV absorbing compound is a benzoic acid-based compound, a salicylate-based compound, a benzophenone-based compound, a benzimidazole-based compound, a benzoquinone System compounds, benzotriazole compounds, oxanilide compounds, anthraquinone-containing compounds, or any combination thereof.
  • aminobenzoic acid aminobenzoic acid
  • aminobenzoic acid aminobenzoic acid
  • p-aminobenzoic acid aminobenzoic acid
  • salicylic acid-based compound examples include octyl salicylate, phenyl salicylate, 4-t-butylphenyl salicylate, and the like.
  • benzophenone-based compound benzophenone, 2-hydroxybenzophenone, 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octylbenzo Phenone, 4-dodecyloxy-2-hydroxybenzophenone, 4-benzyloxy-2-hydroxybenzophenone, 2,2 ', 4,4'-tetrahydroxybenzophenone, 2,2'-dihydride Hydroxy-4,4'-dimethoxybenzophenone, and the like, but is not limited thereto.
  • benzimidazole-based compound examples include phenylbenzimidazole sulfonic acid (also referred to as ensulizole), but are not limited thereto.
  • the benzoquinone-containing compound may include, for example, 2-hydroxybenzoquinone.
  • the oxanilide-based compound may include, for example, 2-ethyl-2'-ethoxyoxanilide, 2-ethoxy-4'-dodecyloxanilide, and the like.
  • the anthraquinone-containing compound may include, for example, 1-hydroxyanthraquinone, 1,5-hydroxyanthraquinone, 1,8-hydroxyanthraquinone, and the like.
  • benzotriazole-containing compound examples include 2- (2-hydroxyphenyl) benzotriazole, 2- (5-methyl-2-hydroxyphenyl) benzotriazole, 2- [2-hydroxy- 3,5-bis ( ⁇ , ⁇ -dimethylbenzyl) phenyl] -2H-benzotriazole, 2- (3,5-di-t-butyl-2-hydroxyphenyl) benzotriazole, 2- (3- t-butyl-5-methyl-2-hydroxyphenyl) -5-chlorobenzotriazole, 2- (3,5-di-t-butyl-2-hydroxyphenyl) -5-chlorobenzotriazole, 2 -(3,5-di-t-acyl-2-hydroxyphenyl) benzotriazole, 2- (2'-hydroxy-5'-t-octylphenyl) benzotriazole, and the like.
  • the first substrate the first substrate
  • PET Polyethylene terephthalate
  • LDPE low density polyethylene
  • PP polypropylene
  • PC polycarbonate
  • PI polymethyl methacrylate
  • PMMA polymethyl methacrylate
  • PI poly (methyl methacrylate)
  • PMMA polymethyl methacrylate
  • PI poly (methyl methacrylate)
  • OPP oriented polypropylene
  • CPP cast polypropylene
  • BOPP biaxially oriented polypropylene
  • PET polyethylene 2,6-dicarboxynaphthalate
  • PEN polyethylene 2,6-dicarboxyl naphthalate
  • PES polyethersulfone
  • polyester polyyester: PE
  • PE polystyrene
  • PS nylon
  • nylon nylon
  • the first base material may be biodegradable.
  • the thickness of the first base material may be independently 5 ⁇ m to 100 ⁇ m, respectively.
  • the thickness of the first substrate may be 7 ⁇ m to 85 ⁇ m, or 10 ⁇ m to 70 ⁇ m.
  • the film for food packaging material may further include a second base material disposed on the blocking layer.
  • the film for food packaging material may include a first adhesive layer between the blocking layer and the second substrate.
  • the first adhesive layer may be an oily adhesive layer or an aqueous adhesive layer.
  • the first adhesive layer polyurethane (polyurethane) -based resin, polyamide (polyamide) -based resin, ethylene-vinyl acetate (ethylene-vinyl acetate) -based resin, polyvinyl acetate (polyvinyl acetate) -based resin, phenol (phenol) resin , Melamine resin, urea resin, epoxy resin, polyester-based resin, polyvinyl alcohol, acrylonitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR) , May include one or more adhesives selected from the group consisting of alkid, acetyl cellulose, nitro cellulose, starch and hot melt thermoplastic polyurethane resins. have.
  • the oily adhesive layer may be formed using an oily adhesive known in the art.
  • the oily adhesive layer may include an oily polyurethane-based resin.
  • the aqueous adhesive layer may be formed using an aqueous adhesive known in the art.
  • the aqueous adhesive layer may include an aqueous polyurethane-based resin, polyvinylpyrrolidone resin, polyvinyl alcohol resin, aqueous acrylic resin, epoxy resin, phenol resin, starch, or any combination thereof.
  • the thickness of the adhesive layer may be 1 ⁇ m to 5 ⁇ m.
  • the thickness of the adhesive layer may be 3 ⁇ m to 4 ⁇ m, but is not limited thereto.
  • the film for food packaging material may further include a third substrate disposed on the second substrate.
  • the film for food packaging material may further include a second adhesive layer between the second base material and the third base material.
  • the film for food packaging material a first base material; A blocking layer disposed on the first substrate; A first adhesive layer disposed on the blocking layer; A second base material disposed on the first aqueous adhesive layer; A second adhesive layer disposed on the second substrate; And a third base material disposed on the second aqueous adhesive layer.
  • the third substrate For the description of the third substrate, reference may be made to the description of the first substrate.
  • the first base material, the second base material, and the third base material may be the same or different from each other.
  • each of the first adhesive layer and the second adhesive layer may be an aqueous adhesive layer.
  • the first adhesive layer and the second adhesive layer may be the same or different from each other.
  • the laminated structure of the film for the food packaging material is not limited to the above-described structure, and optionally includes an n-1 substrate, optionally adhered by the n adhesive on the third substrate.
  • the repeating lamination unit (n is an integer of 4 or more, for example, 4 to 10, 4 to 8, or 4 to 6) may further include one or more.
  • the film for food packaging material may further include 1 to 5, or 1 to 3, the repeating lamination units on the third substrate.
  • the description of the n-th base material may refer to the description of the first base material
  • the description of the n-1 adhesive layer may refer to the description of the first adhesive layer.
  • the film for the food packaging material may have an oxygen permeability of 1 cc / (m 2 day) or less, for example, 0.5 cc / (m 2 day) or less.
  • the film for the food packaging material may have a moisture permeability of 5 g / (m 2 day) or less, for example, 3.5 g / (m 2 day) or less.
  • the light transmittance (transparency) of the film for the food packaging material may be 80% or more, for example, 85% to 95%.
  • the haze (haze) of the film for the food packaging material may be 5%.
  • composition for forming a barrier layer [Composition for forming a barrier layer]
  • a natural product comprising: UV absorbing compounds; Fillers; And a solvent; is provided, a composition for forming a barrier layer.
  • the filler is sorbitol (sorbitol), fructose (sucrose), sucrose (sucrose), mannitol (mannitol), propylene glycol (propylene glycol), glycerol (glycerol), polyethylene glycol (polyethylene glycol) Or any combination thereof.
  • the filler is disposed in a hole between three-dimensional network structures formed by the natural product to fill the pores, thereby increasing the oxygen barrier property and moisture barrier property of the barrier layer, and smoothing the surface. can do.
  • the content of the filler may be 5 parts by weight to 25 parts by weight per 100 parts by weight of the composition for forming the barrier layer, for example, 7 parts by weight to 15 parts by weight.
  • the content of the filler satisfies the above range, there is an advantageous effect in terms of the appearance of the film, mechanical properties, oxygen barrier properties and moisture barrier properties.
  • the content of the filler is less than 5 parts by weight, there is a problem that the coating film is cracked and peeled off from the base film, and when it exceeds 25 parts by weight, when the dry coating film is stored for a long time, the filler migrates to lower the transparency of the film. There is a problem of deteriorating the oxygen barrier properties or moisture barrier properties.
  • the solvent may be water, but is not limited thereto.
  • distilled water or purified water may be used as the solvent.
  • the content of the solvent may be 50 parts by weight to 99 parts by weight per 100 parts by weight of the composition for forming the barrier layer, for example, 70 parts by weight to 95 parts by weight.
  • forming a blocking layer comprising a natural product and a UV absorbing compound on the first substrate includes,
  • the composition for forming the barrier layer is provided with a method for producing a film for food packaging materials, including natural products, UV absorbing compounds, fillers, and solvents.
  • the step of forming the blocking layer may use the composition for forming the blocking layer.
  • the composition for forming the barrier layer reference may be made to the foregoing.
  • the composition for forming the barrier layer may be provided in a thickness of 10 ⁇ m to 70 ⁇ m.
  • the forming of the blocking layer may include applying the composition for forming the blocking layer on the first substrate; And removing at least a portion of the solvent from the composition for forming the barrier layer.
  • the step of applying the composition for forming the barrier layer may use a method such as spin coating, wet coating, spray coating, dip coating, and the like.
  • the step of removing at least a portion of the solvent in the composition for forming the barrier layer may be performed by a method of hot air drying.
  • the step of removing at least a portion of the solvent in the composition for forming a barrier layer may be performed at a temperature of 60 ° C to 150 ° C for 1 minute to 5 minutes using a hot air dryer.
  • the method of manufacturing a film for food packaging material further comprises laminating a second substrate on the barrier layer, and laminating a second substrate on the barrier layer is on the barrier layer. It may further include the step of bonding the second substrate by forming a first adhesive layer thereon.
  • the step of adhering the second substrate may further include applying the adhesive on the barrier layer to a thickness of 3 ⁇ m to 10 ⁇ m.
  • the adhesive may be applied to a thickness of 5 ⁇ m to 10 ⁇ m, or 7 ⁇ m to 8 ⁇ m.
  • the thickness of the first adhesive layer after drying may be formed to 1 ⁇ m to 5 ⁇ m.
  • an aqueous adhesive may be used as the adhesive.
  • the aqueous adhesive may include an aqueous polyurethane resin, polyvinylpyrrolidone resin, polyvinyl alcohol resin, aqueous acrylic resin, epoxy resin, phenol resin, starch or any combination thereof.
  • the step of forming the aqueous adhesive layer may use a dry lamination method, but is not limited thereto, and various methods known in the art may be used.
  • the method for manufacturing the food packaging film may further include the step of adhering the third substrate by forming a second adhesive layer on the second substrate.
  • the manufacturing method of the film for the food packaging material is not limited to the above-described laminated structure, and if necessary, selectively (n) adhesive layer is optionally formed on the third substrate to repeat the adhesion of the nth substrate.
  • the step of laminating may be performed one or more times, for example, 1 to 5 times, or 1 to 3 times.
  • first base material the second base material, the third base material, and the nth base material
  • description of the first adhesive layer, the second adhesive layer, and the n-1 adhesive layer may refer to the foregoing.
  • the composition for forming the barrier layer was dropped on the base film about 1 to 2.5 g, and applied to a thickness of about 50 ⁇ m using an applicator (YBA-5). .
  • a coating film was prepared by drying the film coated with the coating composition at about 120 ° C. for 3 to 5 minutes using a hot air dryer.
  • the Ny substrate After applying the water-based adhesive to a thickness of 7 ⁇ m to 8 ⁇ m on the top of the coating film, the Ny substrate was laminated using a dry lamination method. After applying the water-based adhesive on the Ny substrate to a thickness of 7 ⁇ m to 8 ⁇ m, the LDPE substrate was laminated using a dry lamination method.
  • a film for food packaging was prepared in the same manner as in Example 1, except that aminobenzoic acid was used instead of Ensulizole.
  • a film for food packaging was prepared in the same manner as in Example 1, except that octyl salicylate was used instead of Ensulizole.
  • a film for food packaging was prepared in the same manner as in Example 1, except that benzophenone was used instead of Ensulizole.
  • a film for food packaging was prepared in the same manner as in Example 1, except that Ensulizole was not used.
  • Evaluation Example 1 Evaluation of physical properties of the film for food packaging materials
  • oxygen transmittance oxygen transmission rate: OTR
  • water vapor transmission rate WVTR
  • haze haze
  • Oxygen permeability is expressed as the amount of oxygen permeating the coating film for 24 hours at a temperature of 23 ⁇ 1 ° C and an O 2 concentration of 100%, and was measured using a MOCON, OXTRAN 2/21 oxygen permeability tester.
  • Moisture permeability is expressed as the amount of water vapor permeating the coating film for 24 hours at 37 ⁇ 1 ° C and 100% humidity, and was measured using a MOCON, PERMATRAN-W 3/33 water vapor permeability tester.
  • Light transmittance and haze were measured using a NIPPON DENSHOKU, NDH7000 haze meter.
  • the food packaging film according to one embodiment of the present invention has excellent UV blocking property and oxygen blocking property, high light transmittance and low haze, and thus excellent transparency.

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Abstract

L'invention concerne un film d'emballage alimentaire et son procédé de fabrication.
PCT/KR2019/012126 2018-09-20 2019-09-19 Film d'emballage alimentaire bloquant les uv et son procédé de fabrication WO2020060215A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2018-0113086 2018-09-20
KR1020180113086A KR102138877B1 (ko) 2018-09-20 2018-09-20 Uv 차단성 식품포장재용 필름 및 이의 제조 방법

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WO2020060215A1 true WO2020060215A1 (fr) 2020-03-26

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CN113214514B (zh) * 2021-04-27 2022-04-26 江苏大学 燕麦蛋白与普鲁兰多糖复合果蔬保鲜膜的超声波制备方法
CN115339168B (zh) * 2022-04-22 2023-06-06 浙江省农业科学院 一种高延展性的多层可食用抗菌包装膜及其制备方法

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JP2014521498A (ja) * 2011-07-22 2014-08-28 ピメック 乳清タンパク質でコーティングされたフィルム
KR101742708B1 (ko) * 2016-08-23 2017-06-01 (주)에버켐텍 천연물을 이용한 식품포장재용 코팅 조성물 및 이의 제조방법
KR101820878B1 (ko) * 2017-06-07 2018-01-22 주식회사 에버켐텍 단백질을 포함하는 코팅용 조성물, 이의 제조 방법, 이를 이용한 식품포장재용 필름 및 이를 이용한 식품포장재용 필름의 제조 방법

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