Method for producing laminate and co-extruded sheet

A manufacturing method and a technology for a laminate, which are applied in chemical instruments and methods, lamination, and layered products, etc., can solve the problems of easy peeling of the polycarbonate layer and not necessarily high polycarbonate adhesion.

Inactive Publication Date: 2019-10-18
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, any of the above-mentioned laminates has the problem that the adhesive force of polycarbonate is not necessarily high, and the polycarbonate layer is easy to peel off during use.

Method used

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  • Method for producing laminate and co-extruded sheet

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Comparison scheme
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Embodiment 1 and comparative example 1

[0163]

[0164] 100 parts by weight of PP-1 were mixed with 1 part by weight of maleic anhydride (manufactured by Wako Pure Chemical Industries, Ltd., hereinafter abbreviated as MAH), 2,5-dimethyl-2,5-bis(tert-butylperoxy ) Hexyne-3 (manufactured by NOF Corporation, trade name PERHEXYN (registered trademark) 25B) 0.25 parts by weight, using a twin-screw kneader (manufactured by Nippon Steel Works, TEX-30, L / D: 40, Using a vacuum vent), extrude at a cylinder temperature of 220° C., a screw rotation speed of 200 rpm, and a discharge rate of 80 g / min to obtain a maleic acid-modified polypropylene (hereinafter abbreviated as MAH-PP-1). The density of MAH-PP-1 is 0.915g / cm 3 .

[0165] The obtained MAH-PP-1 was dissolved in xylene, and then the obtained xylene solution was poured into acetone to reprecipitate and purify MAH-PP-1. The amount of grafted maleic anhydride measured by FT-IR was 0.7% by weight.

[0166]

[0167] 90 parts by weight of PP-1, 10 parts by weight of MA...

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Abstract

The present invention is a method for producing a laminate, the method characterized by comprising: a co-extrusion step for co-extruding a polycarbonate and an adhesive composition satisfying the following requirements (i) through (iii) in order to form a polycarbonate layer (A) and an adhesive layer (B) at least a portion of which is laminated on the layer (A); and a heat treatment step for heattreating the polycarbonate layer (A) and the adhesive layer (B). (i) A polyolefin formed by reacting a polyolefin (a), which has a group that reacts with a carbodiimide group, and a carbodiimide group-containing compound (b) is included. (ii) A carbodiimide group is included in an amount of 0.1 to 50 mmol per 100 g of adhesive composition. (iii) Density is 0.870 to 0.940 g / cm<3>.

Description

technical field [0001] The present invention relates to a novel laminate manufacturing method and coextruded sheet. [0002] Specifically, the present invention relates to a laminate having a structure in which a polycarbonate layer, an adhesive layer containing an adhesive composition, and preferably a layer containing a resin other than polycarbonate such as polyolefin are laminated. Manufacturing method of body and coextruded sheet. Background technique [0003] Polycarbonate is used in various applications in many fields due to its excellent transparency, gloss, heat resistance, impact resistance, and ease of mass production. Further, by multilayering polycarbonate and other materials, it is possible to combine advantageous properties of other materials. For example, as a cladding material characterized by the luster of polycarbonate, polyolefin having better heat-sealability than polycarbonate is laminated on polycarbonate to achieve both luster and heat-sealability o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/18B29C48/885B32B27/36B65D65/40B29K69/00B29L9/00
CPCB32B27/36B65D65/40B29C48/18B29C48/885B29C2071/027B29C71/02B32B7/12B32B27/08B32B27/32B32B27/365B32B38/1816B32B2439/70C08G64/24C08G64/307C09J123/36
Inventor 山崎孝史志贺绫平小川庆之
Owner MITSUI CHEM INC
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