Title:
METHOD OF LINING SCREW CAP MADE OF PLASTIC
Document Type and Number:
Japanese Patent JPS6111232
Kind Code:
A
Abstract:
Plastic screw caps of substantially uniform diameter may be lined with a gasket by flowing into each cap a plastisol and then fluxing the plastisol by heating. When the caps are made by injection moulding of a large number of caps in a single block the diameter of the caps may vary from the mean diameter by a standard deviation that is greater than is desired and this can be reduced to acceptable levels, for instance by at least 10% of the standard deviation or to below 0.16% of the mean diameter, by the heating that fluxes the plastisol.
Inventors:
KENESU MAACHIN SHINOTSUTO
Application Number:
JP13092785A
Publication Date:
January 18, 1986
Filing Date:
June 18, 1985
Export Citation:
Assignee:
GRACE W R & CO
International Classes:
B29D1/00; B29C39/10; B29C70/80; B29D99/00; B29C39/00; (IPC1-7): B29D1/00
Attorney, Agent or Firm:
Heiyoshi Odashima