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Multilayer resin film and forming container

A resin film and film technology, which is applied in household containers, synthetic resin layered products, layered products, etc., can solve the problem of poor appearance of containers, easy warping of containers, oil-resistant appearance and no related countermeasures for functional additional properties. And other issues

Inactive Publication Date: 2017-01-04
DENKA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, lamination of crystalline polypropylene-based resin and non-crystalline styrene-based resin tends to warp the molded container, which deteriorates the seal between the container lid and the container. Poor or the appearance of the container becomes bad
[0012] Therefore, the above-mentioned patent documents 1 to 5 mainly focus on how to block oxygen, water vapor and other components that have a bad influence on the contents of the container, but the problems that affect the above-mentioned oil resistance or the appearance and functionality of the container Additional features such as music, etc., but no related countermeasures

Method used

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  • Multilayer resin film and forming container
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  • Multilayer resin film and forming container

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] Using three 45mm single-screw extruders, one 65mm single-screw extruder, and one 105mm single-screw extruder, the PP resin was used in the polyolefin resin by the feed-block method to obtain The polyolefin resin layer 10 has a layer structure of 40 μm / the bonding layer 11a is 15 μm / the oxygen barrier resin layer 12 is 40 μm / the bonding layer 11b is 15 μm / the polystyrene resin layer 13 is 340 μm, and the polyolefin resin layer A multilayer resin film having a layer composition ratio of 9% and a total thickness of 450 μm.

[0103] As a result of measuring the water vapor transmission rate of the multilayer resin film obtained above, as shown in Table 1, the water vapor transmission rate was 0.8 g / m2·day. In addition, as a result of measuring the oxygen transmission rate, as shown in Table 1, the oxygen transmission rate was 0.5 cc / m2·day. In addition, as a result of the oil resistance evaluation of the multilayer resin film, the oil resistance was A, and as a result of t...

Embodiment 2

[0105] In the same manner as in Example 1, the polyolefin resin layer 10 was 150 μm / the bonding layer 11a was 15 μm / the oxygen barrier resin layer 12 was 40 μm / the bonding layer 11b was 15 μm / the polystyrene resin layer 13 was 680 μm. In the layer structure, the layer composition ratio of the polyolefin resin layer was 17%, and the total thickness was a multilayer resin film of 900 μm.

[0106] As a result of measuring the water vapor transmission rate of the multilayer resin film obtained above, as shown in Table 1, the water vapor transmission rate was 0.7 g / m2·day. In addition, as a result of measuring the oxygen transmission rate, as shown in Table 1, the oxygen transmission rate was 0.4 cc / m2·day. In addition, as a result of the oil resistance evaluation of the multilayer resin film, the oil resistance was A, and as a result of the warpage evaluation of the multilayer resin film, the warpage of the multilayer resin film was 15 mm. Furthermore, the moldability of the cont...

Embodiment 3

[0108] In the same manner as in Example 1, a polyolefin resin layer 10 having a thickness of 80 μm / the bonding layer 11a being 15 μm / the oxygen barrier resin layer 12 being 40 μm / the bonding layer 11b being 15 μm / the polystyrene resin layer 13 being 950 μm was obtained. In the layer structure, the layer composition ratio of the polyolefin resin layer was 7%, and the total thickness was a multilayer resin film of 1100 μm.

[0109] As a result of measuring the water vapor transmission rate of the multilayer resin film obtained above, as shown in Table 1, the water vapor transmission rate was 0.7 g / m2·day. In addition, as a result of measuring the oxygen transmission rate, as shown in Table 1, the oxygen transmission rate was 0.6 cc / m2·day. In addition, as a result of the oil resistance evaluation of the multilayer resin film, the oil resistance was A, and as a result of the warpage evaluation of the multilayer resin film, the warpage of the multilayer resin film was 9 mm. Furth...

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Abstract

The invention provides a multilayer resin film, which comprises a polyolefin resin layer, an engaging layer, an oxygen blocking layer and a polystyrene resin layer, wherein the polyolefin resin layer is used as a surface skin layer; the polystyrene resin layer is used as a lower skin layer; the integral thickness of the film is 200 to 1300 mum; the layer composition proportion of the polyolefin resin layer is 1 to 30 percent when the thickness of the polyolefin resin layer is compared with the integral thickness of the film; the polyolefin resin layer is preferably formed by block polypropylene; the thickness of the oxygen blocking resin layer is preferably 10 to 50 mum; the oxygen transmission rate is preferably 10 cc / m<2> day; the water vapor transmission rate is preferably lower than 10g / m<2> day. The multilayer resin film formed in such a way has the advantages of excellent thermal forming performance, oxygen blocking performance, water vapor blocking performance and oil resistant performance; the tilting of the film can be resisted.

Description

technical field [0001] The invention relates to a high-barrier multilayer resin film and a molded container obtained by molding the film. Background technique [0002] Containers for conventional soft drinks, juice drinks, and indulgent foods are all made of polystyrene resins with excellent thermoformability and rigidity. In recent years, multi-layer resin films and multi-layer containers made of them have been promoted. This type of product uses a polystyrene resin layer as the outermost layer with a bonding layer such as a modified olefin resin in between, and then An ethylene-vinyl alcohol copolymer resin layer is provided to act as an oxygen barrier, thereby preventing the content from being deteriorated due to oxidation (see Patent Document 1). [0003] In addition, Patent Document 2 discloses a gas barrier film, which is characterized in that a gas barrier material containing a silicon-containing polymer and a thermoplastic resin is used, and the glass transition tem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/32B32B27/30B65D65/40
CPCB32B27/08B32B27/304B32B27/32B32B2250/24B32B2307/30B32B2307/54B32B2307/7244B32B2307/7246B32B2439/70B65D65/40
Inventor 德永久次
Owner DENKA CO LTD
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