WO2005030478A1 - Film multicouche coextrude pour moulage par soufflage a effet barriere eleve - Google Patents

Film multicouche coextrude pour moulage par soufflage a effet barriere eleve Download PDF

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Publication number
WO2005030478A1
WO2005030478A1 PCT/CN2004/001106 CN2004001106W WO2005030478A1 WO 2005030478 A1 WO2005030478 A1 WO 2005030478A1 CN 2004001106 W CN2004001106 W CN 2004001106W WO 2005030478 A1 WO2005030478 A1 WO 2005030478A1
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WO
WIPO (PCT)
Prior art keywords
layer
film
barrier
layers
multilayer
Prior art date
Application number
PCT/CN2004/001106
Other languages
English (en)
Chinese (zh)
Inventor
Aimin Xiang
Wanchan Liu
Shengguo Bai
Zhiyong Kang
Original Assignee
Institute Of Plastics Processing And Application Of Light Industry
China Institute Of Plastics Processing And Application Of Light Industry Research & Development Center
Zhao, Qihui
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institute Of Plastics Processing And Application Of Light Industry, China Institute Of Plastics Processing And Application Of Light Industry Research & Development Center, Zhao, Qihui filed Critical Institute Of Plastics Processing And Application Of Light Industry
Publication of WO2005030478A1 publication Critical patent/WO2005030478A1/fr

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Classifications

    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins

Definitions

  • the invention relates to a packaging material, in particular to a high-barrier multilayer coextrusion blown film.
  • the waterproof barrier films commonly used in the packaging field are PVDC film and EVOH film.
  • PVDC polyvinylidene chloride, also known as polyvinylidene chloride
  • EVOH ethylene-vinyl alcohol copolymer
  • EVOH film has the advantages of non-toxicity and environmental pollution, but it is prepared by coating method, which has complicated operation and low productivity.
  • the object of the present invention is to provide a multilayer co-extruded blown film, which has good waterproof barrier properties.
  • the present invention adopts the following scheme:
  • the present invention uses PVA (polyvinyl alcohol) as a barrier layer.
  • PVA polyvinyl alcohol
  • the inner side of the barrier layer refers to the side where the coextrusion blown film is in contact with the packaging
  • the outer side of the barrier layer refers to the other side where the coextruded blown film is in contact with the environment.
  • the layer immediately adjacent to the inside of the barrier layer is the inner layer, the layer immediately adjacent to the inner layer is the inner two layer, and the layer immediately adjacent to the inner two layer is the inner three layer; the layer immediately adjacent to the outside of the barrier layer is the outer layer, and the outer layer The first layer is immediately adjacent to the second outer layer, and the second layer is immediately adjacent to the third outer layer.
  • the plastic film layer can also be different, usually PE film (polyethylene film), PP film (polypropylene film), PA film (polyamide film), PC film (polycarbonate Film), PET (polyethylene terephthalate) film, PBT (polybutylene terephthalate) film.
  • PE film polyethylene film
  • PP film polypropylene film
  • PA film polyamide film
  • PC film polycarbonate Film
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • an adhesive layer may also be provided between the barrier layer and the adjacent plastic film layer.
  • the inner layer and the outer layer are adhesive layers, and the inner two layers, the inner three layers, the outer two layers, and the outer three layers are plastic film layers.
  • the binder may be one or two of EVA (ethylene-vinyl acetate copolymer), EAA (ethylene-acrylic acid copolymer), polyacrylate, and maleic anhydride.
  • EVA ethylene-vinyl acetate copolymer
  • EAA ethylene-acrylic acid copolymer
  • polyacrylate polyacrylate
  • maleic anhydride maleic anhydride
  • the thickness of the PVA barrier layer is 1 to 10 ⁇ m
  • the thickness of each plastic film layer is 1 to 20 ⁇
  • the thickness of the adhesive layer is 1 to 10 ⁇ m.
  • the advantages of the present invention are: good barrier performance; interlayer strength is high, 'the layers are not easy to separate; scraps and waste can be degraded and recycled, which is non-toxic and harmless to the environment.
  • FIG. 1 is a schematic structural diagram of Embodiment 1 of the present invention
  • FIG. 2 is a schematic structural diagram of Embodiment 6 of the present invention.
  • FIG. 3 is a process flowchart of Embodiment 6 of the present invention
  • FIG. 4 is a schematic structural diagram of Embodiment 8 of the present invention.
  • the high-barrier multilayer co-extrusion blown film is composed of an outer layer 1, a barrier layer 2, an inner layer 3, and a total of three layers.
  • the barrier layer 2 is PVA, and its thickness is 5 ⁇ m.
  • the outer layer 1 is a 3 ⁇ m PE film, and the inner layer 3 is a 3 ⁇ m PP film.
  • each layer is also composed of three layers: an outer layer 1, a barrier layer 2, and an inner layer 3.
  • the outer layer 1 and the inner layer 3 use a plastic film different from that of the first embodiment.
  • the thickness of each layer is the same as that of the first embodiment, and the barrier layer 2 is completely the same as that of the first embodiment.
  • the high-barrier multilayer co-extrusion blown film is composed of a total of five outer layers 4, one outer layer 1, one barrier layer 2, one inner layer 3, and two inner layers 5.
  • Outer layer 4 and inner layer 5 are plastic film layers, while outer layer 1 and inner layer 3 are adhesive layers.
  • the barrier layer 2 is PVA (polyvinyl alcohol), and its thickness is 8 ⁇ m.
  • the outer two layers 4 are 3 ⁇ m PE films, and the inner two layers 5 are also 3 ⁇ m PE films.
  • the outer layer 1 is 1 ⁇ m of EVA, and the inner layer 3 is also 1 ⁇ m of EVA.
  • Embodiment 6 The difference between this embodiment and Embodiment 6 is that the outer two layers 4 are 3 ⁇ m PP films, the outer layer 1 is 1 ⁇ m EAA, and the materials and thicknesses of the other layers are the same as those of Embodiment 6.
  • This example requires five extruders to extrude five layers of blown film.
  • Embodiment 6 on the basis of Embodiment 6, two outer plastic film layers are added, namely an outer three layer 6 and an inner three layer 7. Both layers are 3 ⁇ m PP films.
  • this embodiment is composed of seven layers, and from the outside to the inside, they are: outer three layers 6 (3 ⁇ m PP film), outer two layers 4 (3 ⁇ m PE film), outer layer 1 (1 ⁇ m EVA), Barrier layer 2 (8 ⁇ m PVA), inner layer 3 (1 ⁇ m EVA), inner two layers 5 (3 ⁇ m PE film), inner three layers 7 (3 ⁇ m PP film).
  • the high-barrier multilayer co-extruded blown film described in Examples 1-8 after long-term tests and trials, both have excellent waterproof properties and barrier properties, and are simple to prepare, non-toxic and pollution-free.

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  • Laminated Bodies (AREA)

Abstract

L'invention concerne également un film multicouche coextrudé pour moulage par soufflage à effet barrière élevé. Ce film utilise le polyalcool de vinyle pour la couche barrière. A l'intérieur et à l'extérieur de la couche barrière, séparément, il y a des films plastiques en une ou deux couches. Une couche de colle est placée entre la couche barrière et le film plastique contigu. Cette invention constitue un film multicouche à l'effet barrière élevé, présentant l'intérêt d'une cohésion interlaminaire rendant le délaminage difficile. Les déchets et ordures de ce film, qui se prêtent bien à la dégradation et au recyclage, sont inoffensifs pour l'environnement.
PCT/CN2004/001106 2003-09-29 2004-09-28 Film multicouche coextrude pour moulage par soufflage a effet barriere eleve WO2005030478A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN03263013.1 2003-09-29
CNU032630131U CN2649315Y (zh) 2003-09-29 2003-09-29 一种高阻隔性多层共挤吹塑膜

Publications (1)

Publication Number Publication Date
WO2005030478A1 true WO2005030478A1 (fr) 2005-04-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2004/001106 WO2005030478A1 (fr) 2003-09-29 2004-09-28 Film multicouche coextrude pour moulage par soufflage a effet barriere eleve

Country Status (2)

Country Link
CN (1) CN2649315Y (fr)
WO (1) WO2005030478A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012020426A1 (fr) * 2010-08-10 2012-02-16 Essel Propack Ltd. Feuille multicouche et procédé associé
JP2012054960A (ja) * 2005-05-31 2012-03-15 Qualcomm Inc Ｈａｒｑを使用するｍｉｍｏｓｃｗ（単一符号語）設計のためのランクの段階的低下
US9960399B2 (en) 2008-03-27 2018-05-01 Zpower, Llc Electrode separator

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009009876B4 (de) * 2009-02-20 2012-05-16 Kuhne Anlagenbau Gmbh Ein- oder mehrschichtige, räucherbare, lufttrockenbare, schlauchförmige Nahrungsmittelfolie für Lebensmittelverpackungen sowie Verfahren zu deren Herstellung
CN101863341A (zh) * 2010-06-11 2010-10-20 上海紫江彩印包装有限公司 一种双层预折叠成型卷膜及其生产方法
CN102390148A (zh) * 2011-07-13 2012-03-28 武汉华丽生物材料有限公司 高阻隔性多层共挤生物基吹塑膜及其制备方法
CN112898768A (zh) * 2019-11-19 2021-06-04 上海龙程塑料制品有限公司 一种高性能阻隔材料及多层复合阻隔结构
CN111361251A (zh) * 2019-12-11 2020-07-03 凯威塑胶工业有限公司 用于高寒地带的制袋膜及其制备方法
CN111959075A (zh) * 2020-08-26 2020-11-20 安徽省恳思惠新型材料有限责任公司 一种应用于真空绝热板包装的多层共挤高阻隔膜
CN114407463B (zh) * 2021-12-22 2023-04-11 北京工商大学 一种非开挖修复用原位固化法管道修复用的抗紫外多层保护膜及其制备方法

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
GUO YUNFENG ET AL.: "Composite film for medicine packaging", CHINA PACKAGING INDUSTRY, vol. 5, no. 6, 1997, pages 14 *
HUANG X. ET AL.: "Barrier technique for packaging plastics", PLASTICS SCI. & TECHNOLOGY, October 2001 (2001-10-01), pages 40 *
KANG ZHIYONG ET AL.: "Breakthrough of study on PVA packaging film", PLASTICS, vol. 32, no. 6, October 2003 (2003-10-01), pages 68 *
RONGFANG S. ET AL.: "Protective packaging design of traditional food", CHINA FOOD AND NUTRITION, no. 6, 1999, pages 10 *
RONGFANG S. ET AL.: "The new development of the art of food preservation", AGRICULTURAL AND FARMING PRODUCT DEVELOPMENT, vol. 4, 1996, pages 3 - 4 *
WU Q. ET AL.: "The development and application of MPVA", CHINA PACKAGING, vol. 14, no. 6, 1994, pages 65 - 66 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012054960A (ja) * 2005-05-31 2012-03-15 Qualcomm Inc Ｈａｒｑを使用するｍｉｍｏｓｃｗ（単一符号語）設計のためのランクの段階的低下
US9960399B2 (en) 2008-03-27 2018-05-01 Zpower, Llc Electrode separator
WO2012020426A1 (fr) * 2010-08-10 2012-02-16 Essel Propack Ltd. Feuille multicouche et procédé associé
US9586384B2 (en) 2010-08-10 2017-03-07 Essel Propack Ltd. Multi-layer sheet and method thereof

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