| 摘要 |
1,194,093. Making hollow articles and road vehicle details; stamping; rolling; angular bending. NITTO ELECTRIC INDUSTRIAL CO. Ltd. 17 Jan., 1968, No. 2635/68. Headings B3A, B3E, B3M and B3Q. [Also in Division B2] Metal surfaces are protected during working, e.g. press deep drawing, press bending, and multi-step rolling by the application of an adhesive sheet comprising a flexible plastics material coated with a pressure sensitive adhesive consisting of a cured rubbery polymer of an ester of acrylic acid containing at least 50 mole per cent acrylic acid ester units and having a Mooney viscosity of at least 20 ML 1+4 when measured at 100‹ C. prior to curing (see Division In the Examples (2) a stainless steel plate protected by a sheet comprising a transparent polyvinyl chloride film coated with an acrylic ester-acrylonitrile copolymer adhesive on one side and a low-friction silicone rubber on the other side was deep drawn in a press to form the pouring mouth of a Thermos bottle; (3) stainless steel plate protected by a sheet comprising polyvinylidene chloride film coated on one side with adhesive butyl acrylate-acrylonitrile copolymer and on the other side with acrylonitrilevinyl octadecanoate copolymer was roll-formed into a spandrel; (5) steel plate protected by a polyethylene film coated with adhesive acrylic ester-acrylonitrile-acrylic acid terpolymer on one side and low friction silicone rubber on the other side was press-formed into an automobile bumper. |
