Surface-roughened film and sheet, and process for production and use thereof

• US 4,777,201 A
• Filed: 08/01/1986
• Issued: 10/11/1988
• Est. Priority Date: 08/02/1985
• Status: Expired due to Term

• Current Assignee: Mitsui Chemicals Incorporated (Mitsui Chemicals)
• Original Assignee: Mitsui Petrochemical Industries, Ltd.
• Inventors: Yamamoto, Akio, Abe, Shunji, Shigemoto, Hiromi
• Primary Examiner(s): Buffalow, Edith
• Application Number:
  US06/892,043
• Time in Patent Office: 802 Days
• Field of Search: 524/269, 428/461, 428/901, 526/348.4, 427/96
• US Class Current: 524/269
• CPC Class Codes: B29C 33/68 Release sheets
• CPC Class Codes: B29C 43/021 characterised by the shape of the surface
• CPC Class Codes: B29C 48/00 Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor extrusion blow-moulding B29C49/04
• CPC Class Codes: B29C 48/07 Flat, e.g. panels
• CPC Class Codes: B29C 48/08 flexible, e.g. films
• CPC Class Codes: B29C 59/005 characterised by the choice of material
• CPC Class Codes: B29C 59/04 using rollers or endless belts
• CPC Class Codes: B29C 70/088 and with one or more layers of non-plastics material or non-specified material, e.g. supports
• CPC Class Codes: B29C 70/46 using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
• CPC Class Codes: B29D 7/01 Films or sheets
• CPC Class Codes: B29K 2023/00 Use of polyalkenes or derivatives thereof as moulding material
• CPC Class Codes: B29L 2007/001 having irregular or rough surfaces treads for tyres B29L2030/002
• CPC Class Codes: B29L 2031/3425 Printed circuits
• CPC Class Codes: B32B 15/08 of synthetic resin
• CPC Class Codes: B32B 2305/076 Prepregs
• CPC Class Codes: B32B 2309/02 Temperature
• CPC Class Codes: B32B 2309/04 Time
• CPC Class Codes: B32B 2309/105 Thickness
• CPC Class Codes: B32B 2309/12 Pressure
• CPC Class Codes: B32B 2311/00 Metals, their alloys or their compounds
• CPC Class Codes: B32B 2457/08 : PCBs, i.e. printed circuit boards
• CPC Class Codes: B32B 27/18 : characterised by the use of special additives
• CPC Class Codes: B32B 27/32 : comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 37/153 : at least one layer is extruded and immediately laminated while in semi-molten state
• CPC Class Codes: B32B 38/0012 : Mechanical treatment, e.g. roughening, deforming, stretching
• CPC Class Codes: C08J 2323/20 : having four to nine carbon atoms
• CPC Class Codes: C08J 5/18 : Manufacture of films or sheets
• CPC Class Codes: H05K 3/022 : Processes for manufacturing precursors of printed circuits, i.e. copper-clad substrates
• CPC Class Codes: H05K 3/381 : by special treatment of the substrate
• CPC Class Codes: Y10S 428/901 : Printed circuit
• CPC Class Codes: Y10T 156/1039 : Surface deformation only of sandwich or lamina [e.g., embossed panels]
• CPC Class Codes: Y10T 428/31692 : Next to addition polymer from unsaturated monomers

Abstract

An essentially non-oriented surface roughened film or sheet comprising a homopolymer or copolymer of 4-methyl-1-pentene having the surface roughness of 0.5 to 10 micrometers; a process for production of the above-mentioned surface roughened film or sheet of claim 1 comprising the following steps (1) preparing a molten composition comprising a homopolymer or copolymer of 4-methyl-1-pentene, (2) extruding the molten composition to form a film or sheet, and (3) placing the film or sheet in contact with a roller having a roughened surface or passing the film or sheet through a pair of rollers, at least one of which has a roughened surface; and the use of the above-mentioned surface roughened film or sheet for the manufacture of single-sided metal clad laminates.

Claims

1. An essentially non-oriented surface-roughened film or sheet comprising a crystalline homopolymer or crystalline copolymer of 4-methyl-1-pentene having a surface roughness of 0.5 to 10 micrometers.

2. A surface-roughened film or sheet according to claim 1 wherein the copolymer consists of 4-methyl-1-pentene and an α

-olefin selected from the group consisting of ethylene, propylene, 1-butene, 1-hexene, 1-octene, 1-decene, 1-tetradecene, and 1-octadecene.

3. A surface-roughened film or sheet according to claim 2 wherein 4-methyl-1-pentene comprises at least 85 molar percent of the copolymer.

4. A surface-roughened film or sheet according to claim 1 wherein the film or sheet further contains 0.5 to 5% by weight of silicone oil in relation to the weight of the polymer of 4-methyl-1-pentene.

5. A surface-roughened film or sheet according to claim 1 for use in the manufacture of single-sided metal-clad laminates.

6. A surface-roughened film or sheet according to claim 1 wherein the film or sheet further contains 43 parts by weight of filler in relation to the weight of the polymer of 4-methyl-1-pentene.