Black film

a black film, black technology, applied in the direction of synthetic resin layered products, protective garments, furniture parts, etc., can solve the problems of whitish hue, inability to obtain film that excels in deep and clear coal blackness, and notably lose the design sophistication of decorative molded products

Active Publication Date: 2019-07-18
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect that this new type of dark film solves without causing any visible light or shading on it when folded up for storage purposes.

Problems solved by technology

Technological Problem: Current techniques involve making plastic parts look better but they lack depth perception due to their limited ability to form smooth surfaces without excessively thick materials. Existing solutions use expensive equipment and complicated processes involving multiple steps, resulting in increased costs associated with production. Additionally, current technologies require large amounts of space during assembly process, causing issues related to cost savings and environmental concerns.

Method used

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  • Black film

Examples

Experimental program
Comparison scheme
Effect test

manufacturing example 1

[Preparation of Organic Dye-Containing Resin (P-1)]

[0134]The following materials were melt-compounded, and an organic dye-containing resin (P-1), which was a black acrylic resin, was obtained.

[0135]methacrylic resin (X-1): 70.64 mass %

[0136]multilayer structure rubber particle (Y): 27.66 mass %

[0137]Solvent Green 28: 0.50 mass %

[0138]Solvent Green 3: 0.90 mass %

[0139]Solvent Violet 36: 0.30 mass %

[0140]In the organic dye-containing resin (P-1), the content of a structural unit derived from an acrylic acid alkyl ester having a carbon number of 6 to 12 was 10.14 mass %.

manufacturing examples 2 to 11

[Preparation of Organic Dye-Containing Resins (P-2) to (P11)]

[0141]Organic dye-containing resins (P-2) to (P-8) and (P-11), which were black acrylic resins, an organic dye-containing resin (P-9), which was a black polycarbonate resin, and an organic dye-containing resin (P-10), which was a black ABS resin, were obtained in a similar manner to that in Manufacturing Example 1 except that the source materials and the mixing ratios were changed in accordance with Table 1.

manufacturing example 12

[Preparation of Acrylic Resin (Q)]

[0142]The following materials were melt-compounded, and a transparent acrylic resin (Q) was obtained.

[0143]methacrylic resin (X-2): 79.20 mass %

[0144]block copolymer (Z): 19.80 mass %

[0145]TINUVIN 479 (manufactured by Toyotsu Chemiplas Corporation): 1.0 mass %

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Abstract

A black film containing a thermoplastic resin (A) that contains two or more types of dyes other than black, where a thickness T is 45 to 550 μm, a total concentration C of the dyes other than black is 0.4 to 5 mass % with respect to the thermoplastic resin (A), the total concentration C of the dyes and the thickness T satisfy the following expression (1):
C×T≥210  (1)
    • where in a L*a*b* color system measurement compliant with HS Z 8781-4, L* (lightness) is no more than 10, an absolute value of a* is no more than 2.0, and an absolute value of b* is no more than 2.0, and a total light transmittance obtained after the black film is stretched twofold in one axial direction at a temperature higher than a glass transition temperature by 20° C. is no more than 3.0%.

Description

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Claims

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Application Information

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Owner KURARAY CO LTD
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