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Resin composition for lamination, and laminate

A resin composition, a technology of polyolefin resin, applied in the field of laminates of lamination layers and resin compositions for lamination, can solve the problems of adhesion between lamination layers and substrates, reduction of tear strength, transparent surface It can reduce the tear strength and achieve the effect of excellent productivity.

Active Publication Date: 2010-10-27
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, even if resins such as polypropylene are laminated and molded using conventional molding aids, the productivity itself tends to be improved, but there are also problems in the adhesion between the obtained laminated layer and the base material, and tear strength (tear strength). ) decreases, and the optical properties such as transparency or surface properties of resins such as polypropylene itself tend to be damaged

Method used

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  • Resin composition for lamination, and laminate
  • Resin composition for lamination, and laminate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0212] 100 parts by mass of the adjusted polyolefin resin and 3 parts by mass of polyethylene wax (EXCEREX 30200BT; manufactured by Mitsui Chemicals Co., Ltd.) were mixed and supplied to In the single-screw extruder, melt and knead at a resin temperature of 270°C, and extrude through a T-die under the conditions of a line speed of 70m / min, a thickness of 20μm, and a processing width of 620mm to form a biaxially stretched polypropylene film. On the formed substrate, a laminated film was obtained. The physical properties of this film were measured, and the results are shown in Table 2.

Embodiment 2

[0214] A laminated film was obtained in the same manner as in Example 1 except that the polyethylene wax was changed to polyethylene wax (1). The results are shown in Table 2.

Embodiment 3

[0216] A laminated film was obtained in the same manner as in Example 1 except that the polyethylene wax was changed to polyethylene wax (2). The results are shown in Table 2.

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Abstract

Disclosed is a resin composition for lamination, which has excellent productivity in lamination molding, which is not deteriorated in optical properties (including transparency) and surface properties of a resin (e.g., polypropylene) itself, and which can be laminated on a base material to produce a laminate having tear strength at a level equal to or higher than that achieved by a laminate produced by laminating only a polyolefin resin (e.g., polypropylene) on the base material. The resin composition comprises: a polyolefin resin; and a polyethylene wax which has a density of 890 to 955 kg / m3 as measured by the density gradient tube method in accordance with JIS K7112 and which has a number average molecular weight (Mn) of 500 to 2900 in terms of the polyethylene content as measured by gel permeation chromatography (GPC).

Description

technical field [0001] The present invention relates to a resin composition for lamination used when laminating a synthetic resin on a base material, and a laminate having a lamination layer formed of the composition. Background technique [0002] For a long time, it has been widely used to provide a laminated layer on the surface of a substrate made of metal, paper, wood, plastic, etc. to achieve surface protection or surface modification. Polypropylene having transparency, chemical resistance, and heat resistance is preferable as a laminate material for forming the laminate layer. In addition, in order to improve transparency and at the same time suppress the deterioration of formability such as thickness unevenness called surge (surging) to a minimum, it is known to mix high-pressure low-density polyethylene and amorphous α- A method of an olefin copolymer (for example, see Patent Document 1). [0003] On the other hand, in recent years, there has been a stronger demand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00B32B27/32C08L23/04C08L23/14
CPCC08L23/02C08L23/12C08L23/06C08L23/142C08L91/06B32B27/32C08L2205/02B32B5/022B32B5/024B32B7/12B32B15/08B32B15/20B32B21/08B32B27/08B32B27/10B32B27/12B32B27/18B32B27/20B32B27/22B32B27/302B32B27/304B32B27/306B32B27/308B32B27/34B32B27/36B32B27/365B32B2255/10B32B2255/20B32B2255/205B32B2255/26B32B2270/00B32B2307/306B32B2307/412B32B2307/50B32B2307/514B32B2307/5825B32B2307/702B32B2307/714B32B2307/72C08K5/098C08K5/10C08L23/0815C08L2207/066C08L2666/06
Inventor 川边邦昭宇於崎浩隆安井基泰中村英夫尼田康大贺昭仁
Owner MITSUI CHEM INC
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