Apparatus for making formed products
Abstract
Abstract A MEANS AND METHODS FOR MAKING EMBOSSED THERMOFORMED ARTICLES PARTICULARLY ADAPTED FOR USE IN FORMING EMBOSSED ARTICLES, SUCH AS MEAT TRAYS, AND VARIOUS CONTAINERS, OR PACKAGES OF MATERIAL SUCH AS FOAMED STYRENE PLASTIC OR EQUIVALENT THERMO-PLASTIC MATERIAL, WHEREBY A VACUUM OR NEGATIVE PRESSURE IS APPLIED THROUGH A PERFORATED MOLD MEMBER AT AN ARTICLE FORMING SURFACE OF THE MOLD MEMBER SO AS TO VACUUM FORM AN EMBOSSED SURFACE ON THE ARTICLE BEING MANUFACTURED, AND PARTICULARLY DURING A TIME WHEN THE TEMPERATURE OF THE ARTICLE BEING FORMED IS SUFFICIENT TO PERMIT THE FORMING OF THE MATERIAL, BUT INSUFFICIENT TO CAUSE DEGRADATION OF THE CELL STRUCTURE OF SAID MATERIAL; A DIE MEANS OF THE INVENTION, BEING PERFORATE OR MADE OF POROUS MATERIAL, PERMITS UNIFORM APPLICATION OF VACUUM OR NEGATIVE PRESSURE TO AN EMBOSSED ARTICLE FORMING SURFACE OF THE DIE MEANS OF THE INVENTION.
Inventors
- 👤 Frank C Schutz
Bibliographic Details
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