Title:
【発明の名称】描画性保護フイルムおよびその製造法
Document Type and Number:
Japanese Patent JP3073039
Kind Code:
B2
Abstract:
PURPOSE:To obtain a surface protective film characterized by that a character or a pattern is drawn on the surface thereof by a pencil with hardness of about HB and having transparency of a degree capable of checking a defect. CONSTITUTION:A composite co-extrusion non-stretched film with total light transmissivity of 70% or more has an A-layer on one surface thereof and a B-layer on the other surface thereof and the A-layer consists of a specific polyolefin resin and 15-50 wt.% of inorg. particles of which the refractive index, aspect ratio and average particle size are specific and has Vickers hardness of 1.4-5.5 and surface roughness of 0.4-1.5mum and the B-layer is a selfadhesive layer with surface roughness of 0.03-0.18mum.
More Like This:
Inventors:
Masayoshi Suyama
Masanori Takeuchi
Youichi Matsuura
Masanori Takeuchi
Youichi Matsuura
Application Number:
JP7161791A
Publication Date:
August 07, 2000
Filing Date:
April 04, 1991
Export Citation:
Assignee:
Toray Industries, Inc.
Toray Synthetic Film Co., Ltd.
Toray Synthetic Film Co., Ltd.
International Classes:
B29C47/06; B29C47/88; B32B7/02; B32B27/08; B32B27/20; B32B27/32; B29K23/00; B29K105/16; B29L9/00; (IPC1-7): B32B27/32; B29C47/06; B29C47/88; B32B27/20
Domestic Patent References:
| JP55149364A | ||||
| JP4325243A | ||||
| JP5138842A |
Attorney, Agent or Firm:
Mikio Kagawa