WO2005037031A1 - The compound hollow container with high separating characteristics - Google Patents

The compound hollow container with high separating characteristics Download PDF

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Publication number
WO2005037031A1
WO2005037031A1 PCT/CN2004/001107 CN2004001107W WO2005037031A1 WO 2005037031 A1 WO2005037031 A1 WO 2005037031A1 CN 2004001107 W CN2004001107 W CN 2004001107W WO 2005037031 A1 WO2005037031 A1 WO 2005037031A1
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Prior art keywords
layer
barrier
layers
hollow container
composite hollow
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PCT/CN2004/001107
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French (fr)
Chinese (zh)
Inventor
Wanchan Liu
Qihui Zhao
Aimin Xiang
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
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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 filed Critical Institute Of Plastics Processing And Application Of Light Industry
Publication of WO2005037031A1 publication Critical patent/WO2005037031A1/en

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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
    • 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

Definitions

  • the present invention relates to a packaging material, and in particular, to a concrete barrier composite hollow container.
  • PVDC containers The commonly used barrier composite hollow containers in the packaging field are PVDC containers and EVOH containers.
  • PVDC polyvinylidene chloride, also known as polyvinylidene chloride
  • HC1 gas is emitted during incineration, which will cause environmental pollution.
  • Europe, the United States, and Taiwan have turned to the use of EVOH (ethylene-vinyl alcohol copolymer) containers.
  • EVOH containers have the advantages of non-toxicity and environmental pollution, but their preparation process is complicated and the production efficiency is low.
  • the object of the present invention is to provide a concrete barrier composite hollow container with good waterproof barrier performance.
  • the present invention adopts the following scheme:
  • the present invention uses PVA (polyvinyl alcohol) as a barrier layer.
  • PVA polyvinyl alcohol
  • a composite hollow container refers to a multilayer structure of a container wall, which may have a barrier layer, a plastic layer, and an adhesive layer.
  • the inside of the barrier layer refers to the side where the composite hollow container is in contact with the liquid in the container, and the outside of the barrier layer refers to the other side where the composite hollow container 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 layer can also be different. Usually it can be PE (polyethylene), PP (polypropylene), PA (polyamide), PC (polycarbonate), PET (poly terephthalate) One or more of ethylene glycol formate), PBT (polybutylene terephthalate).
  • an adhesive layer may also be provided between the barrier layer and the adjacent plastic 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 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 mm, the thickness of each plastic layer is 1 to 5 mm, and the thickness of the adhesive layer is 0.1 to 2 mm.
  • the invention has the advantages of good barrier properties, high interlayer strength, and difficulty in separating layers; scraps and waste can be degraded and recycled, and are 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 composite hollow container is composed of three layers: an outer layer 1, a barrier layer 2, and an inner-layer 3.
  • the barrier layer 2 is PVA (polyvinyl alcohol) and has a thickness of 5 mm.
  • the outer layer 1 is a 3mm PE layer, and the inner layer 3 is a 3mm PP layer.
  • each layer is also composed of three layers: an outer layer 1, a barrier layer 2, and an inner layer 3.
  • the outer layer and the inner layer 3 use a plastic layer 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 composite hollow container 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 layers, while outer layer 1 and inner layer 3 are adhesive layers.
  • the barrier layer 2 is PVA (polyvinyl alcohol) and has a thickness of 8 mm.
  • the outer two layers 4 are 3mm PE layers, and the inner two layers 5 are also 3mm PE layers.
  • the outer layer 1 is 1mm EVA, and the inner layer 3 is also 1mm EVA.
  • Embodiment 6 The difference between this embodiment and Embodiment 6 is that the outer two layers 4 are 3 mm PP layers, and the outer layer 1 is 1 mm EAA.
  • 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 composite hollow containers.
  • Embodiment 6 on the basis of Embodiment 6, two outer plastic layers 6 and three inner plastic layers 7 are added. Both layers are 3mm PP layers. In this way, this embodiment is composed of seven layers. From the outside to the inside, they are: outer three layers 6 (3mm PP layer), outer two layers 4 (3mm PE layer), outer layer 1 (lmm EVA), and barrier. Layer 2 (8mm PVA), inner layer 3 (lmm EVA), inner two layers 5 (3mm PE layer), inner three layers 7 (3mm PP layer).
  • the high-barrier composite hollow container described in Examples 1-8 after long-term tests and trials, has excellent water-proof performance and barrier performance, and is simple to prepare, non-toxic and pollution-free.

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Abstract

The invention is related to a compound hollow container with high separating characteristics, wherein PVA is used as the separating layer, with one or two plastic layer(s) in the internal side and external side of the separating layer respectively. An adhesive layer is attached between the separating layer and the adjacent plastic layer. This invention is good in separating characteristic, high in intensity among the layers, the refuse and the offal is able to be reclaimed. It is non-toxic and suitable for the environment protection.

Description

一种高阻隔性复合中空容器 技术领域  Technical field of high-barrier composite hollow container
本发明涉及一种包装材料， 具体地说， 是一种髙阻隔性复合中空容器。  The present invention relates to a packaging material, and in particular, to a concrete barrier composite hollow container.
背景技术 Background technique
目前， 随着市场的发展和人民生活的不断提高， 人们对商品包装的要求也不断 提出新的要求， 特别是一些冷冻食品、 水产品、 高温蒸煮食品、 名贵药材、 香精香 料、 各种饮料、 酒类、 茶叶、 咖啡、 油性食品、 髙精密机械零牛及仪器等的包装， 要求包装材料不仅具有良好的防水性能， 还应同时具有良好的阻隔性能， 即防止有 机溶剂渗透的性能。 为满足消费者的要求， 各生产厂家都在致力研究幵发新型阻隔 性包装材料及其产品。  At present, with the development of the market and the continuous improvement of people's lives, people have continuously put forward new requirements for the packaging of goods, especially some frozen foods, aquatic products, high-temperature retort foods, valuable medicinal materials, flavors and spices, various beverages, The packaging of alcohol, tea, coffee, oily foods, high-precision machinery, zero cattle and instruments, etc. requires that the packaging materials not only have good water resistance, but also have good barrier properties, that is, the ability to prevent the penetration of organic solvents. In order to meet the requirements of consumers, various manufacturers are committed to research and develop new barrier packaging materials and products.
目前包装领域常用的髙阻隔性复合中空容器是 PVDC容器和 EVOH容器。 其中 PVDC (聚偏二氯乙烯， 又名聚偏氯乙烯）容器有较髙的阻隔性， 但由于 PVDC容器 的边角 和废弃物难以回收利用， 焚烧处理时放出 HC1气体， 会造成环境污染。 欧 美及台湾地区己转向使用 EVOH (乙烯-乙烯醇共聚物）容器， EVOH容器具有无毒、 不污染环境的优点， 但它的制备过程， 操作复杂、 生产效率低。  The commonly used barrier composite hollow containers in the packaging field are PVDC containers and EVOH containers. Among them, PVDC (polyvinylidene chloride, also known as polyvinylidene chloride) containers have relatively high barrier properties, but because the corners and waste of PVDC containers are difficult to recycle, HC1 gas is emitted during incineration, which will cause environmental pollution. Europe, the United States, and Taiwan have turned to the use of EVOH (ethylene-vinyl alcohol copolymer) containers. EVOH containers have the advantages of non-toxicity and environmental pollution, but their preparation process is complicated and the production efficiency is low.
发明内容 Summary of the invention
本发明的目的是提供一种髙阻隔性复合中空容器， 它具有良好的防水阻隔性能。 为实现上述目的， 本发明采取以下方案： 本发明采用 PVA (聚乙烯醇） 做为阻 隔层。 在阻隔层的内侧和外侧分别有一层或两层的塑料层。  The object of the present invention is to provide a concrete barrier composite hollow container with good waterproof barrier performance. To achieve the above object, the present invention adopts the following scheme: The present invention uses PVA (polyvinyl alcohol) as a barrier layer. There are one or two plastic layers on the inside and outside of the barrier layer, respectively.
为了说明的方便， 特定义以下名词-.  For the convenience of explanation, the following terms are defined-.
复合中空容器是指容器壁采用多层结构， 可以有阻隔层、 塑料层和粘合剂层。 阻隔层的内侧是指复合中空容器与容器内液体接触的一侧， 阻隔层的外侧是指 复合中空容器与环境接触的另一侧。  A composite hollow container refers to a multilayer structure of a container wall, which may have a barrier layer, a plastic layer, and an adhesive layer. The inside of the barrier layer refers to the side where the composite hollow container is in contact with the liquid in the container, and the outside of the barrier layer refers to the other side where the composite hollow container is in contact with the environment.
与阻隔层内侧紧邻的一层为内一层， 与内一层紧邻的为内二层， 与内二层紧邻 的为内三层； 与阻隔层外侧紧邻的一层为外一层， 与外一层紧邻的为外二层， 与外 二层紧邻的为外三层。  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.
可以根据包装物和环境条件的不同， 塑料层也可以不同， 通常可以是 PE (聚乙 烯） 、 PP (聚丙烯） 、 PA (聚酰胺） 、 PC (聚碳酸酯） 、 PET (聚对苯二甲酸乙二 醇酯） 、 PBT (聚对苯二甲酸丁二醇酯） 中的一种或几种。 为了提高本发明各层的粘接强度， 还可以在阻隔层与相邻的塑料层之间设有一 层粘合剂层。 此时， 内一层和外一层为粘合剂层， 内二层、 内三层、 外二层、 外三 层为塑料层。 Depending on the packaging and environmental conditions, the plastic layer can also be different. Usually it can be PE (polyethylene), PP (polypropylene), PA (polyamide), PC (polycarbonate), PET (poly terephthalate) One or more of ethylene glycol formate), PBT (polybutylene terephthalate). In order to improve the bonding strength of each layer of the present invention, an adhesive layer may also be provided between the barrier layer and the adjacent plastic layer. At this time, 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 layers.
粘合剂可以是 EVA (乙烯-乙酸乙烯酯共聚物） 、 EAA (乙烯-丙烯酸共聚物） 、 聚丙烯酸酯、 马来酸酐中的一种或两种。  The binder may be one or two of EVA (ethylene-vinyl acetate copolymer), EAA (ethylene-acrylic acid copolymer), polyacrylate, and maleic anhydride.
PVA阻隔层的厚度为 l~10mm, 各塑料层的厚度为 l~5mm, 粘合剂层的厚度为 0.1~2mm。  The thickness of the PVA barrier layer is 1 to 10 mm, the thickness of each plastic layer is 1 to 5 mm, and the thickness of the adhesive layer is 0.1 to 2 mm.
本发明的优点是： 阻隔性能好； 层间强度高， 各层不易分离； 边角料和废弃物 可降解和回收利用， 对环境无毒无害。  The invention has the advantages of good barrier properties, high interlayer strength, and difficulty in separating layers; scraps and waste can be degraded and recycled, and are non-toxic and harmless to the environment.
附图概述 Overview of the drawings
图 1为本发明的实施例 1的结构示意图  FIG. 1 is a schematic structural diagram of Embodiment 1 of the present invention
图 2为本发明的实施例 6的结构示意图  FIG. 2 is a schematic structural diagram of Embodiment 6 of the present invention
图 3为本发明的实施例 6的工艺流程图  FIG. 3 is a process flowchart of Embodiment 6 of the present invention
图 4为本发明的实施例 8的结构示意图  FIG. 4 is a schematic structural diagram of Embodiment 8 of the present invention
本发明的实施方式 Embodiments of the invention
实施例 - 1  Example-1
请参考图 I。 在本实施例中， 高阻隔性复合中空容器由外一层 1、 阻隔层 2、 内 —层 3共三层构成。阻隔层 2为 PVA (聚乙烯醇），其厚度为 5mm。外一层 1是 3mm 的 PE层， 内一层 3是 3mm的 PP层。  Please refer to Figure I. In this embodiment, the high-barrier composite hollow container is composed of three layers: an outer layer 1, a barrier layer 2, and an inner-layer 3. The barrier layer 2 is PVA (polyvinyl alcohol) and has a thickness of 5 mm. The outer layer 1 is a 3mm PE layer, and the inner layer 3 is a 3mm PP layer.
实施例 2-5  Example 2-5
请参考表 1。 这些实施例也是由外一层 1、 阻隔层 2、 内一层 3共三层构成。 在 这些实施例中， 外一层 〖与内一层 3采用了与实施例 1不同的塑料层。 而各层的厚 度与实施例 1相同， 阻隔层 2与实施例 1完全相同。  Please refer to Table 1. These embodiments are also composed of three layers: an outer layer 1, a barrier layer 2, and an inner layer 3. In these embodiments, the outer layer and the inner layer 3 use a plastic layer 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.
实施例 2-5的结构表  Structure Table of Example 2-5
外一层 1 阻隔层 2 内一层 3 实施例 2 PE PVA PE  Outer layer 1 Barrier layer 2 Inner layer 3 Example 2 PE PVA PE
实施例 3 PC PVA PP  Example 3 PC PVA PP
实施例 4 PET ： PVA PBT 实施例 5 PBT PVA PET 实施例 6 Example 4 PET: PVA PBT Example 5 PBT PVA PET Example 6
请参考图 2。 在本实施例中， 高阻隔性复合中空容器由外二层 4、 外一层 1、 阻 隔层 2、 内一层 3、 内二层 5共五层构成。 外二层 4和内二层 5是塑料层， 而外一层 1和内一层 3是粘合剂层。 阻隔层 2为 PVA (聚乙烯醇） ， 其厚度为 8mm。 外二层 4是 3mm的 PE层， 内二层 5也是 3mm的 PE层。 外一层 1是 1mm的 EVA, 内一 层 3也是 1mm的 EVA。  Please refer to Figure 2. In this embodiment, the high-barrier composite hollow container 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 layers, while outer layer 1 and inner layer 3 are adhesive layers. The barrier layer 2 is PVA (polyvinyl alcohol) and has a thickness of 8 mm. The outer two layers 4 are 3mm PE layers, and the inner two layers 5 are also 3mm PE layers. The outer layer 1 is 1mm EVA, and the inner layer 3 is also 1mm EVA.
请参考图 3。 制备本实施例时， 一台挤出机挤 PVA阻隔层 2, 另一台挤出机挤 PE塑料层 4和 5 ,第三台挤出机 EVA粘合层 1和 3。 PE的流道在机头中对称地分为 两股， 分别为两个层， 即外二层 4和内二层 5。 同理， EVA的流道也在机头中对称 地分为两股， 分别为两个层， 即外一层 1和内一层 3。 这样做的好处是仅仅使用了三 台挤出机， 就可以成型具有五层容器壁的复合中空容器。 这样的生产过程的另外一 个优点是， 无需加入水或有机溶剂。  Please refer to Figure 3. In the preparation of this example, one extruder extruded the PVA barrier layer 2, the other extruder extruded the PE plastic layers 4 and 5, and the third extruder EVA adhesive layers 1 and 3. The PE flow channel is symmetrically divided into two strands in the machine head, which are respectively two layers, namely the outer two layers 4 and the inner two layers 5. Similarly, the flow channel of EVA is symmetrically divided into two strands in the nose, which are respectively two layers, namely the outer layer 1 and the inner layer 3. The advantage of this is that only three extruders can be used to form a composite hollow container with five container walls. Another advantage of this production process is that no water or organic solvents need to be added.
实施例 7  Example 7
本实施例与实施例 6的区别在于， 外二层 4是 3mm的 PP层， 外一层 1是 lmm 的 ΕΑΑ, 其它各层的材料和厚度与实施例 6相同。 本实施例需要 5台挤出机挤出五 层的复合中空容器。  The difference between this embodiment and Embodiment 6 is that the outer two layers 4 are 3 mm PP layers, and the outer layer 1 is 1 mm EAA. 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 composite hollow containers.
实施例 8  Example 8
本实施例在实施例 6的基础上， 又增加了外三层 6和内三层 7共两层塑料层。 这两层都是 3mm的 ΡΡ层。 这样， 本实施例由七层构成， 从外到内依次是： 外三层 6 ( 3mm的 PP层） 、 外二层 4 ( 3mm的 PE层） 、 外一层 1 ( lmm的 EVA) 、 阻隔 层 2 ( 8mm的 PVA) 、 内一层 3 ( lmm的 EVA ) 、 内二层 5 ( 3mm的 PE层） 、 内 三层 7 ( 3mm的 PP层） 。  In this embodiment, on the basis of Embodiment 6, two outer plastic layers 6 and three inner plastic layers 7 are added. Both layers are 3mm PP layers. In this way, this embodiment is composed of seven layers. From the outside to the inside, they are: outer three layers 6 (3mm PP layer), outer two layers 4 (3mm PE layer), outer layer 1 (lmm EVA), and barrier. Layer 2 (8mm PVA), inner layer 3 (lmm EVA), inner two layers 5 (3mm PE layer), inner three layers 7 (3mm PP layer).
工业应用性  Industrial applicability
实施例 1-8所述的高阻隔性复合中空容器，经长期试验和试用， 都具有优良的防 水性能和阻隔性能， 且制备简单， 无毒无污染。  The high-barrier composite hollow container described in Examples 1-8, after long-term tests and trials, has excellent water-proof performance and barrier performance, and is simple to prepare, non-toxic and pollution-free.

Claims

1. 一种高阻隔性复合中空容器， 其特征在于： PVA做为阻隔层， 在阻隔层的内 侧和外侧分别有一层或两层的塑料层。 1. A high-barrier composite hollow container, characterized in that: PVA is used as a barrier layer, and there are one or two plastic layers on the inner side and the outer side of the barrier layer, respectively.
2. 根据权利要求 1所述的高阻隔性复合中空容器， 其特征在于， 在阻隔层与相 邻的塑料层之间设有一层粘合剂层。  2. The high-barrier composite hollow container according to claim 1, wherein an adhesive layer is provided between the barrier layer and an adjacent plastic layer.
3. 根据权利要求 1所述的高阻隔性复合中空容器， 其特征在于： 所述的塑料是 PE、 PP、 PA、 PC、 PET、 PBT中的一种或几种。  3. The high-barrier composite hollow container according to claim 1, wherein the plastic is one or more of PE, PP, PA, PC, PET, and PBT.
4. 根据权利要求 2所述的高阻隔性复合中空容器， 其特征在于： 所述的粘合剂 是 EVA、 EAA、 聚丙烯酸酯、 马来酸酐中的一种或两种。  4. The high-barrier composite hollow container according to claim 2, wherein: the adhesive is one or two of EVA, EAA, polyacrylate, and maleic anhydride.
5. 根据权利要求 1或 2所述的髙阻隔性复合中空容器， 其特征在于： 所述的阻 隔层的厚度为 l~10mm。  5. The concrete barrier composite hollow container according to claim 1 or 2, wherein the thickness of the barrier layer is 1 to 10 mm.
6. 根据权利要求 1或 2所述的高阻隔性复合中空容器， 其特征在于： 所述的塑 料层的厚度为 l~5mm。  The high-barrier composite hollow container according to claim 1 or 2, wherein the thickness of the plastic layer is 1 to 5 mm.
7. 根据权利要求 2所述的髙阻隔性蕈合中空容器， 其特征在于： 所述的粘合剂 层的厚度为 0.卜 2mm。  7. The urn-blocking barrier-type hollow container according to claim 2, wherein the thickness of the adhesive layer is 0.1 mm to 2 mm.
PCT/CN2004/001107 2003-10-13 2004-09-28 The compound hollow container with high separating characteristics WO2005037031A1 (en)

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180048001A1 (en) * 2015-03-26 2018-02-15 Honda Motor Co., Ltd. Hydrogen storage container

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1055506A (en) * 1990-04-13 1991-10-23 成都科技大学 Three-layer plastic compound film used for packaging food
CN2227020Y (en) * 1995-05-18 1996-05-15 徐平 Dry-type compound packing film
CN1204293A (en) * 1995-10-20 1999-01-06 利乐拉瓦尔集团及财务有限公司 Laminated packaging material, method of producing material, and packaging container produced from material
CN1242331A (en) * 1998-07-14 2000-01-26 住友电木株式会社 Laminated products, multi-layer container and sealed container

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1055506A (en) * 1990-04-13 1991-10-23 成都科技大学 Three-layer plastic compound film used for packaging food
CN2227020Y (en) * 1995-05-18 1996-05-15 徐平 Dry-type compound packing film
CN1204293A (en) * 1995-10-20 1999-01-06 利乐拉瓦尔集团及财务有限公司 Laminated packaging material, method of producing material, and packaging container produced from material
CN1242331A (en) * 1998-07-14 2000-01-26 住友电木株式会社 Laminated products, multi-layer container and sealed container

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