Method of molding a lamina into a protective member

• US 6,001,301 A
• Filed: 05/15/1996
• Issued: 12/14/1999
• Est. Priority Date: 11/02/1993
• Status: Expired due to Fees

• Current Assignee: Hayakawa Rubber Company
• Original Assignee: Hayakawa Rubber Company
• Inventors: Kinoshita, Ryouichi, Noma, Masaaki
• Primary Examiner(s): Aftergut, Jeff H.
• Assistant Examiner(s): HENDRIX, ROBERT T
• Application Number:
  US08/648,652
• Time in Patent Office: 1,308 Days
• Field of Search: 428/40.1, 428/317.3, 428/36.5, 156/60, 118/505, 150/154, 150/155, 150/158, 150/165, 264/512, 264/510, 264/173.15, 264/241
• US Class Current: 264/510
• CPC Class Codes: B32B 1/00 Layered products having a non-planar shape
• CPC Class Codes: B32B 2266/0235 Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
• CPC Class Codes: B32B 2266/025 Polyolefin vinyl or acrylic copolymers B32B2266/0221, B32B2266/0242
• CPC Class Codes: B32B 2307/714 Inert, i.e. inert to chemical degradation, corrosion
• CPC Class Codes: B32B 2307/7265 Non-permeable
• CPC Class Codes: B32B 2405/00 Adhesive articles, e.g. adhesive tapes labels B32B2519/00
• CPC Class Codes: B32B 2419/00 Buildings or parts thereof walls, panels B32B2607/00
• CPC Class Codes: B32B 27/065 of foam
• CPC Class Codes: B32B 7/06 permitting easy separation
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: E04B 1/66 Sealings damp-proof courses E04B1/644; fire-proof sealings E04B1/948; additions of anti-leak properties to plaster C04B; bituminous sealing masses C08L95/00; sealings for hydraulic engineering work in general E02B3/16; against ground humidity or ground water E02D31/02; coverings against rain or other precipitations of the atmosphere E04D; composition of material or manufacture of sealing foils, see the relevant classes for these foils
• CPC Class Codes: E04B 1/6809 Reverse side strips
• CPC Class Codes: F16B 33/008 Corrosion preventing means
• CPC Class Codes: F16B 37/14 Cap nuts; Nut caps or bolt caps
• CPC Class Codes: F16L 25/0036 Joints for corrugated pipes

Abstract

A pre-shaped protective member has, on one side or both sides thereof, a uniform adhesive layer covered with a release film. This protective member is produced by vacuum-molding or pressure-molding a molding laminate comprising a thermoplastic sheet with or without a foamed sheet laminated thereon as a base sheet, an adhesive layer having a thickness of 0.5 mm or more and laminated on at least one surface of the base sheet, and a release film covering the adhesive layer.

Claims

1. A method of making a pre-shaped protective member that is adapted to be adhered to an irregularly shaped portion of a construction element by an adhesive layer engageable with substantially the entirety of the irregularly shaped portion to provide environmental protection for said portion, comprising the steps of:

forming a substantially flat laminate that includes in substantially coextensive relation a thermoplastic sheet, a uniform adhesive layer having a thickness of not less than 0.5 mm on at least one surface of the thermoplastic sheet, and a release film covering the adhesive layer;

heating the laminate; and

molding the heated laminate to a shape conforming substantially to the shape of the irregularly shaped portion of the construction element so as to provide a molded pre-shaped protective member having an adhesive layer coextensive with the thermoplastic sheet and adapted to be adhered throughout its extent in moisture- and air-tight relation to the irregularly shaped portion.

2. The protective member according to claim 1, wherein the laminate is shaped by vacuum molding.

3. The protective member according to claim 1, wherein the laminate is shaped by pressure molding.

4. A method of making a pre-shaped protective member that is adapted to be adhered to an irregularly shaped portion of a construction element by an adhesive layer engageable with substantially the entirety of the irregularly shaped portion to provide environmental protection for said portion, comprising the steps of:

forming a substantially flat laminate that includes in substantially coextensive relation a thermoplastic sheet, a thermoplastic foam sheet laminated to the thermoplastic sheet, a uniform adhesive layer having a thickness of not less than 0.5 mm on the thermoplastic foam sheet, and a release film covering the adhesive layer;

heating the laminate; and

molding the heated laminate to a shape conforming substantially to the shape of the irregularly shaped portion of the construction element so as to provide a molded pre-shaped protective member having an adhesive layer coextensive with the thermoplastic sheet and adapted to be adhered throughout its extent in moisture- and air-tight relation to the irregular shaped portion.

5. The protective member according to claim 4, wherein the laminate is shaped by vacuum molding.

6. The protective member according to claim 4, wherein the laminate is shaped by pressure molding.