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Laminated film

A technology of laminated film and resin layer, applied in the direction of layered products, metal layered products, pressure-sensitive film/sheet, etc., can solve the problem of plasticizer pollution and achieve the effect of small change in adhesion

Active Publication Date: 2020-09-22
TORAY ADVANCED FILM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a disadvantage that the plasticizer added to the laminated film contaminates the surface of the adherend

Method used

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  • Laminated film
  • Laminated film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0124] The constituent resins of each layer were prepared as follows.

[0125] Base material: 70% by mass of (B1) and 30% by mass of (B5) were used.

[0126] Resin layer A: 70 mass % of (E1), 15 mass % of (X1), and 15 mass % of (Y1) were used.

[0127] Resin layer B: 49 mass % of (B2), 44 mass % of (B3), 6 mass % of (R1), and 1 mass % of (B4) were used.

[0128] Next, the constituent resins of each layer were put into each extruder of a T-die composite film forming machine having three extruders, and the discharge rate of each extruder was adjusted so that the base material became 46.5 μm and the resin layer A became 10 μm, resin layer B becomes 3.5 μm, laminated in sequence, extruded from a composite T-die at an extrusion temperature of 200°C, cast on a roll with a surface temperature controlled at 40°C, and formed into a film, and the resulting molded product Winding was performed to obtain a laminated film.

[0129] Then, the obtained laminated film was evaluated by the ...

Embodiment 2

[0131] Except having changed into the resin used for the following resin layer A, it carried out similarly to Example 1, and obtained the laminated film. Then, the obtained laminated film was evaluated by the method mentioned above.

[0132] Resin layer A: 70 mass % of (E1), 10 mass % of (X1), and 20 mass % of (Y1) were used.

Embodiment 3

[0134] Except having changed into the resin used for the following resin layer A, it carried out similarly to Example 1, and obtained the laminated film. Then, the obtained laminated film was evaluated by the method mentioned above.

[0135] Resin layer A: 65 mass % of (E1), 20 mass % of (X1), and 15 mass % of (Y1) were used.

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Abstract

The present invention relates to a laminated film in which there is little change in adhesive strength due to components migrating from a material to which said film is adhered, and which is resistantto lifting caused by cutting after application to said material.

Description

technical field [0001] The present invention relates to a laminated film which has little change in adhesive force due to components transferred from an adherend and which is less prone to lifting due to cutting after lamination. Background technique [0002] Conventionally, in order to protect the surface of components such as optical devices, metal plates, coated metal plates, resin plates, and glass plates, laminations having a base material and an adhesive layer laminated on one side of the base material have been widely used. Film (usually, it may also be called a surface protection film, a protective tape, an adhesive film, etc.) (for example, patent documents 1-3). Among the aforementioned parts, when a laminated film is used for the protection of the surface of a part in which the components contained therein segregate over time, for example, the surface of polyvinyl chloride containing a plasticizer, there is a problem of transfer of the plasticizer to the laminated...

Claims

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Application Information

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IPC IPC(8): B32B27/00C09J7/38C09J125/04C09J153/02
CPCC09J125/04B32B27/00C09J7/38C09J153/02B32B27/08B32B27/302B32B15/082
Inventor 井上则英片仓章中道夏树町田哲也辰喜利海大仓正寿西村直哉
Owner TORAY ADVANCED FILM CO LTD