Process for making decorative articles

Details Process for making decorative articles Process for making decorative articles

1993-03-09

1995-06-27

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With printing or coating of workpiece

Coating or impregnating workpiece before molding or shaping...

264230, 264246, 264294, 264265, 264267, B29C 3912, B29C 5918, B29C 7082

Patent

active

054277248

ABSTRACT:
A process for making decorative articles. The process includes heating a polymeric substance up to its glass transition temperature and stretching in at least one direction from a first size to a second size. The substance is allowed to cool in the stretched condition. The stretched polymeric substance is thereafter heated locally at an intensity until surface cracks appear therein to a desired depth. The interior area of the cracks in the polymeric substance is then treated in various ways. Finally, the polymeric substance is heated further until the polymeric substance begins to retreat to its original dimensions and the cracks close.

REFERENCES:
patent: 2368085 (1945-01-01), Barbieri
patent: 2533609 (1950-12-01), Nolan et al.
patent: 3000057 (1961-09-01), Swedlow et al.
patent: 3111584 (1963-11-01), Appeldorn

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