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Resin composition and laminate

A technology of resin composition and laminates, applied in the direction of synthetic resin layered products, layered products, packaged article types, etc. Excellent lamination formability, good bondability, and the effect of good bondability

Active Publication Date: 2016-11-02
MITSUBISHI RAYON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in extrusion lamination molding, molten adhesive resin, etc. are laminated at high speed on the surface of a film-formed base layer, so the joint strength between the two layers is not necessarily high.
As a result, the resulting laminate had problems such as peeling at the interface between the base material layer and the adhesive resin layer.
In particular, long-term storage of laminates obtained by extrusion lamination will cause the following problems: the bonding strength between the two layers will decrease over time due to the influence of temperature or humidity rise, etc.
[0005] In order to improve the adhesiveness between the base material layer and the adhesive resin layer, it is necessary to lower the extrusion speed during extrusion lamination molding, which greatly impairs the high-speed moldability that is originally a feature of extrusion lamination molding.

Method used

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  • Resin composition and laminate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0189] 9.0% by weight of a-1, 21.0% by weight of b-1, 35.0% by weight of B-3, 20.0% by weight of C-1, and 15.0% by weight of D-1 (total 100% by weight) were previously dry blended For mixing, use a twin-screw extruder PCM45 manufactured by Ikegai Manufacturing Co., Ltd. to melt and knead at a temperature of 200°C, a screw speed of 300 rpm, and an extrusion volume of 25 kg / hr, extrude into a ribbon shape, and cool After that, cutting was performed to obtain a pelletized resin composition.

Embodiment 2～7 and comparative example 1～5

[0191] Except that the raw materials and their mixing ratios were as shown in Table-1, melt-kneading was carried out in the same manner as in Example 1 to obtain a resin composition. However, in Example 3 and Example 6, in addition to the various materials in Table-1, with respect to the total amount of 100% by weight, 0.1% by weight of DHT4A (hydrotalcite manufactured by Kyowa Chemical Industry Co., Ltd.) was added. Compound).

[0192]

[0193] Random polypropylene was used as the outer layer, and the resin compositions obtained in Examples 1 to 7 and Comparative Examples 1 to 5 were used as the inner layer (bonding material layer), and an outer layer of 20 μm was obtained by the following molding method , A laminate for evaluating joint strength with an inner layer of 10 μm.

[0194]

[0195] ·Forming machine: Two kinds of two-layer co-extrusion laminating machine manufactured by Sumitomo Heavy Industries Modern

[0196] (The extruders are all single screw extruders)

[0197] ·Coo...

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Abstract

An object of the present invention is to provide a resin composition which is excellent in high-speed extrusion lamination moldability and can maintain good adhesion, and a laminate including a layer composed of the resin composition. The present invention relates to a resin composition containing a polypropylene-based resin (A) containing unsaturated carboxylic acid or its derivatives on polypropylene and a laminate comprising a layer composed of the resin composition. modified polypropylene; propylene-based copolymer (B); ethylene / α-olefin copolymer (C); and polyethylene (D).

Description

Technical field [0001] The present invention relates to a resin composition and a laminate using the resin composition. The resin composition has excellent moldability in single-layer or multi-layer laminate molding and has good adhesion (adhesion) to metals and resins . [0002] More specifically, the present invention relates to a resin composition having good adhesion to aluminum and a resin film, and a laminate using the resin composition. Background technique [0003] A laminate formed by laminating an adhesive resin layer on a base layer is widely used as a material for packaging foods, pharmaceuticals, and other contents that place importance on maintaining quality. As the base layer of the laminate used for these applications, when barrier properties (oxygen barrier properties, water vapor barrier properties, etc.) and light shielding properties are required for packaging materials, a metal layer is used as the base layer. In addition, when barrier properties and transpar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/10B32B15/085B32B27/32C08K5/09C08L23/04
CPCB32B15/085B32B7/12B32B15/20B32B2270/00B32B2307/3065B32B2307/4026B32B2307/712B32B2439/70B32B2439/80C08K5/09C08L23/142C08L51/06C08L2205/025C08L2205/035C08L2207/066
Inventor 山口辰夫二村达夫黑濑翔平
Owner MITSUBISHI RAYON CO LTD
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