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Multilayer polyester film and transfer foil

A technology of polyester layer and polyester, applied in the direction of coating, layered products, synthetic resin layered products, etc., can solve the problems of high manufacturing cost and poor reusability, and achieve excellent mold release and solvent resistance , Excellent formability

Active Publication Date: 2008-11-12
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this laminated film has the problems of requiring a step of laminating the polyester film and the polyolefin film and high production costs due to poor recyclability.

Method used

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  • Multilayer polyester film and transfer foil
  • Multilayer polyester film and transfer foil
  • Multilayer polyester film and transfer foil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0171] The polyester used in the polyester layer was mixed according to the ratio in Table 1. Furthermore, 0.1 mass % of stearyl phosphoric acid ("ADK STAB" (registered trademark) AX-71) manufactured by Asahi Denka Kogyo Co., Ltd.) was added separately, and it injected|thrown-in to a ventilation type twin-screw extruder (L / D=36). After melting the injected resin at 280° C., it was passed through two vacuum vents. Then, after passing the resin through a leaf-shaped disc filter with a filtration precision of 30 μm, it was put into a multi-branched pipe mold. The polyester used for the highly crystalline polyester layer was mixed according to the formulation in Table 1, put into a ventilated twin-screw extruder (L / D=36), melted at 250°C, and passed through two Vacuum vent. Then, after passing the resin through a leaf-shaped disc filter with a filtration precision of 30 μm, it was put into a multi-branched pipe mold.

[0172] After each resin in the mold passes through the bran...

Embodiment 2

[0178] The polyester of the polyester layer and the highly crystalline polyester layer were mixed according to the composition ratio in Table 1, and the addition amount of stearyl phosphoric acid was changed to 0.15% by mass, and the single-manifold mold was used, and the same method as in Example 1 was used. A method for producing a substrate film composed of a highly crystalline polyester layer / polyester layer / highly crystalline polyester layer. The M / P value of the polyester layer of the obtained base film was 0.75. The layer thickness of one layer of the highly crystalline polyester layer was 15 μm, and the total thickness was 100 μm.

[0179] On the surface in contact with the casting drum of the obtained base film, as a release layer, a release agent is coated by wire bar coating method and cured by ultraviolet irradiation. Curable silicone resin (Silicone resin "X-62-7655" manufactured by Shin-Etsu Chemical Co., Ltd.) and a catalyst (catalyst "CAT-7603" manufactured by...

Embodiment 3

[0182] According to the polyester compounded in the polyester layer and the highly crystalline polyester layer in Table 1, the method of close contact with the casting drum was changed from the method of applying static electricity at the end using a needle-shaped edge connector to the method of applying static electricity to the entire surface using electric wires. , the dark light casting drum is changed to a mirror casting drum, so that the highly crystalline polyester layer of the molten film is in contact with the casting drum, and the melting temperature of the polyester layer and the temperature of the mold are set to 290 ° C. In addition, the adoption and implementation In the same manner as in Example 1, a base film having two types of two-layer structures of a polyester layer / a highly crystalline polyester layer was obtained. The M / P value of the polyester layer of the obtained base film was 0.99. The layer thickness of one layer of the highly crystalline polyester l...

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Abstract

The present invention relates to a polyester multilayer film, wherein at least a polyester layer, a highly crystalline polyester layer composed of a highly crystalline polyester having a crystallinity parameter Tcg of not more than 35 DEG C, and a mold-releasing layer are arranged in this order and the surface of the mold-releasing layer has a contact angle with water of not less than 85 DEG in an atmosphere at room temperature 23 DEG C and a humidity of 65%. The polyester multilayer film provides a polyester multilayer film for molding which satisfies all of mold releasability, printability and moldability, while having excellent cost performance.

Description

technical field [0001] The present invention relates to a polyester laminate film for molding and a transfer foil excellent in releasability, printability, and formability. Background technique [0002] In order to decorate a member having a shape that is difficult to decorate by direct printing, there is conventionally known a method of using a molding film or transfer foil, that is, a method of decorating by integrating a printed film with the surface of the member. [0003] The use of a biaxially stretched polyester film is disclosed as a conventional film for molding and a film for transfer foil (see, for example, Patent Document 1). In addition, it is also disclosed that a polyester film having a molding stress within a specific range is used to improve the moldability by using a polyester having a lower molding stress than biaxially stretched PET, especially a copolyester (see Patent Document 2). . However, the method of using a biaxially stretched polyester film has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/00B29C51/16B44C1/17B32B7/02
CPCB32B2307/40Y10T428/31681B32B2307/738B29K2105/256B29K2067/00B32B27/36B32B7/06Y10T428/24802B32B7/02B32B2605/08Y10T428/1462B32B2270/00B32B2264/10Y10T428/1476Y10T428/31938Y10T428/31786B32B2607/00B32B2255/26B32B2307/306B32B2509/00B32B7/12B32B27/08B44C1/1712B29C51/16B32B2307/75Y10T428/24942B32B2307/704B32B2264/02Y10T428/31797B44C1/165B32B2307/748B29C51/08B32B2255/10B32B27/308B32B27/18Y10T428/2848B32B2255/28B32B27/14B32B27/302B32B7/022
Inventor 药师堂健一桥本幸吉木村将弘
Owner TORAY IND INC
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