Patent · US Expired

Method for contouring the surface of thermoplastic synthetic resins

US4038360A · kind A · utility

0Cited by

4References

4Claims

0Family size

Assignee

Rohm Co., Ltd. · JP

Inventors

Friedrich Hanstein · Groß-Zimmern, DE
Theodor P. Moench · Heubach, DE

Key dates

Filing date	Oct 1, 1976
Grant date	Jul 26, 1977
Priority date	—
Expiry date	Oct 1, 1996

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C59/022
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A method for contouring the surface of a thermoplastic synthetic resin sheet, which comprises contacting said sheet, warmed to the softening temperature of the synthetic resin, with a rigid structure having perforations therein and having a sheet of rubber or of a rubber-like synthetic resin foam in contact therewith on that side thereof which is opposite to said thermoplastic synthetic resin sheet, under pressure such that said synthetic resin sheet, in a thermoplastic condition, and said sheet of rubber or of synthetic resin foam penetrate into said perforations and come into substantially full surface contact with each other in said perforations.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.