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Crosslinked laminated wrapping film and container box therefor

A technology of packaging film and cross-linked layer, which is applied in the field of food packaging film and cross-linked laminated polyethylene packaging film, can solve the problems of not being able to optimize the film material or composition and cutter combination, and balance difficulties, and achieve excellent Adhesive properties, low flexibility, and the effect of excellent appearance

Inactive Publication Date: 2006-07-26
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Another problem is the balance of film properties
Therefore, it is very difficult to maintain a balance between these properties
[0009] As for the cutting performance, it is almost impossible to achieve the optimum between the film material or the composition and the cutter combination

Method used

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  • Crosslinked laminated wrapping film and container box therefor
  • Crosslinked laminated wrapping film and container box therefor
  • Crosslinked laminated wrapping film and container box therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0258] Embodiment 1-3, comparative example 1, comparative example 6

[0259] A three-layer laminated film having a surface layer / intermediate layer / surface layer ratio of 15 / 70 / 15 was prepared using the above preparation procedure. In this preparation process, 50 wt% of "Attaine 4201" (trade name; linear low-density polyethylene), 50 wt% of "Petrothene 186R" (high-pressure processed low-density polyethylene) and 0.800 parts by weight of "Rikemal OL-100E" were used for the surface layer. (trade name; glycerol monofatty acid ester), the middle layer uses 75 wt% of "Suntec HD S360" (trade name; high-density polyethylene), 25 wt% of "Suntec LD M2004" high-pressure processing low-density polyethylene and 0.800 Parts by weight of "Rikemal OL-100E" (trade name; glycerol monofatty acid ester) (Example 1). In order to determine the impact of the additive, the glycerol monofatty acid ester consumption in the surface layer and the middle layer is changed into 0.500 weight part (embodime...

Embodiment 4 and 5

[0260] Embodiment 4 and 5, comparative example 2 and 3

[0261] A packaging film was prepared in a manner similar to Example 2, except that the resin mixing ratio of the middle layer was changed to 90 wt% high-density polyethylene and 10 wt% high-pressure processed low-density polyethylene (Example 4). The ratio of interlayer HDPE / HPLDPE was changed to 50 / 50 (Example 5), 100 / 0 (Comparative Example 2) and 40 / 60 (Comparative Example 3). The resulting film data comprising the resin composition are listed in Tables 1 and 5. As a result, it was found that the packaging films of Examples 4 and 5 satisfied various performance requirements and thus were excellent packaging films, whereas Comparative Examples 2 and 3 were insufficient in tensile modulus. The results are listed in Tables 3 and 6.

Embodiment 6 to 9

[0262] Examples 6 to 9, Comparative Examples 4 and 5

[0263] A packaging film was prepared in a similar manner to Example 2, except that the resin mixing ratio of the surface layer was changed to 85 wt% linear low density polyethylene and 15 wt% high pressure processed low density polyethylene (Example 6). Change the ratio of surface layer linear low density polyethylene / high pressure processing low density polyethylene into 75 / 25 (embodiment 7), 60 / 40 (embodiment 8), 40 / 60 (embodiment 9), 100 / 0 ( Comparative Example 4) and 15 / 85 (Comparative Example 5). The resulting film data comprising the resin composition are listed in Tables 1 and 5. As a result, it was found that the packaging film of Example 6 was an excellent packaging film, and the films of Examples 7 to 9 met a variety of necessary properties of packaging films, so they were excellent packaging films. However, the adhesion energy and pull-out force of Comparative Examples 4 and 5 (These two properties are importa...

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Abstract

The present invention relates to wrap films, especially wrap films for food. More specifically, the present invention pertains to crosslinked laminated polyethylene wrap films which are excellent in clinging property, pulling-out ease from a dispenser box and heat resistance, does not emit much odor, permits suitable food wrapping and can be produced efficiently. Specifically, the present invention provides a crosslinked laminated wrap film having, at least, two surface layers and one intermediate layer, wherein the two surface layers each comprises 20 to 90% by weight of a linear low density polyethylene and 80 to 10% by weight of a high pressure process low density polyethylene, wherein the intermediate layer has at least one layer comprising 50 to 95% by weight of a high density polyethylene and 50 to 5% by weight of a high pressure process low density polyethylene, and wherein the surface layers and intermediate layer each has 0.050 to 0.800 part by weight of glycerin monofatty acid ester based on 100 parts by weight in total of the two polyethylenes constituting the respective layer.

Description

technical field [0001] The invention relates to a film for food packaging or article packaging, especially a packaging film for food. More specifically, the present invention relates to a cross-linked laminated polyethylene packaging film which has excellent adhesion characteristics, easy pull-out performance from dispensing boxes and heat resistance, emits very little odor, and is suitable for packaging food, And has excellent production efficiency. Background technique [0002] Food packaging film is mainly used at home as a food packaging material for convenience and mostly for protecting food. Such packaging films need to have sufficiently high adhesion properties between the container and the film or between the film and the film so as not to cause self-peeling. They also need to be heat resistant for long-lasting use in microwave ovens, moderately hard to the touch, low in elasticity, have good appearance when the film is used for packaging, clean and emit very littl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/18B65D83/08B65H35/00C08L23/06C08L23/08
CPCC08L23/0815C08L23/06B65D83/0841B65H2701/1752B32B27/32B65H35/0006B32B27/18C08L2666/04B32B27/08B32B2323/043B32B2323/046B32B2439/70
Inventor 小林久晃中尾卓吉本雅秀
Owner ASAHI KASEI KK
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