Vinylidene-fluoride resin film
AssigneeDenka Company Limited
InventorsKouta Nagaoka, Tadashi Sawasato, Keiji Takano
Life of this patent
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Abstract
To provide a vinylidene-fluoride resin film having low cloudiness and good visibility of a pattern and the like of a decorative film of a lower layer although having a matte tone with low glossiness. The vinylidene-fluoride resin film comprises crosslinked acrylic acid ester resin particles, in which the crosslinked acrylic acid ester resin particles have an average particle diameter of 5% or more and 40% or less to the thickness of the vinylidene-fluoride resin film and the arithmetic average surface roughness (Ra) of the vinylidene-fluoride resin film is 0.4 μm or more and less than 2 μm.
Claims12
A vinylidene-fluoride resin film comprising:
- a vinylidene-fluoride resin;
- and
- crosslinked acrylic acid ester resin particles, wherein
- the crosslinked acrylic acid ester resin particles have an average particle diameter of 5% or more and 40% or less to a thickness of the vinylidene-fluoride resin film,
- an arithmetic average surface roughness (Ra) of the vinylidene-fluoride resin film is 0.4 μm or more and less than 2 μm;
- 50 parts by mass or more and 99 parts by mass or less of the vinylidene fluoride resin comprising a copolymer of vinylidene fluoride and hexafluoropropene and/or polyvinylidene fluoride;
- and
- 50 parts by mass or less and 1 part by mass or more of a methacrylic acid ester resin so that a total is 100 parts by mass;
- a total light transmittance of the vinylidene-fluoride resin film of 90% or greater;
- a total haze of vinylidene-fluoride resin film of 60% or more;
- an internal haze of the vinylidene-fluoride resin film of less than 55%;
- an external haze of the vinylidene-fluoride resin film of 30% or more;
- and
- a glossiness of the vinylidene-fluoride resin film of less than 15, wherein
- the average particle diameter of the crosslinked acrylic acid ester resin particles is 3.5 μm or more and 4.5 μm or less.
Dependencies are inferred from the claim text.