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Polyethylenic resin laminated film

A polyethylene-based resin and polyethylene resin technology, applied in the field of polyethylene-based resin laminated films, can solve the problems of not fully meeting the requirements of film thickness spots, not fully considering the reduction of white spots, etc., to achieve less thickness spots , the effect of less white spots

Inactive Publication Date: 2010-11-24
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyethylene-based resin films disclosed in these patent documents are produced by the blown film forming method, and cannot sufficiently meet the requirements for the thickness irregularity of the film.
In addition, the reduction of the white point is not fully considered

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

Embodiment 2

Embodiment 3

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Abstract

The present invention provides a polyethylene resin laminate film, more specifically a polyethylene resin film having a good balance of heat-sealing property and stiffness of the film, having less fish-eyes, having little fisheyes and also having less unevenness in thickness. [MEANS FOR SOLVING PROBLEMS] A polyethylene resin laminate film having at least a laminate layer (A) and a seal layer (B),the laminate layer (A) comprising at least two polyethylene resins each having a density of 900 to 970 kg / m<3> and a molecular weight distribution (Mw / Mn) of 2.0 to 3.5, the densities of the at leasttwo polyethylene resins being different from each other, the average density of the laminate layer being 920 to 945 kg / m<3>, the seal layer (B) comprising a polyethylene resin having a density of 900to 930 kg / m<3>, and the average density of the laminate layer (A) being larger than that of the seal layer (B).

Description

Polyethylene resin laminated film Technical field The invention relates to a polyethylene resin laminated film. More specifically, it relates to a polyethylene resin film that can achieve a balance between heat sealability, anti-blocking properties, and film rigidity, has less white spots, and has less film thickness unevenness. In addition, the present invention also relates to an independent (corresponding Japanese: independent) polyethylene-based resin laminated film for containers. More specifically, it relates to a polyethylene-based resin film for a stand-alone container that can achieve a balance between heat-sealability, blocking resistance, and film rigidity, has fewer white spots, and film thickness unevenness. Background technique Polyethylene resin film has excellent heat-sealability and impact resistance, and is widely used in packaging and containers for food and daily groceries. In recent years, packaging and containers using films for convenience, resource sa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32C08K7/00B65D65/40C08L23/04B32B7/02
CPCC08L2205/02B32B27/32C08L23/0815B32B2307/31B32B7/02B32B2439/70C08L23/06B32B27/08B32B2250/242C08L2666/06C08K7/00B65D65/40
Inventor 大野真一渡边哲也小田尚伸久世胜朗
Owner TOYOBO CO LTD
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