ES235944A3 - Procedure for the manufacture, by molding, of pieces of plastic material (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the manufacture, by molding, of pieces of plastic material (Machine-translation by Google Translate, not legally binding)
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SALA ROCA RAMEN
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SALA ROCA RAMEN
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Casting Or Compression Moulding Of Plastics Or The Like
(AREA)
Abstract
Process for the manufacture, by molding, of pieces of plastic material, characterized essentially by starting from open negative molds of appropriate material, preferably plaster, whose work surface has been previously smoothed and hardened by application of a varnish of shellac, nitrocellulose, furanic resin and the like, with successive layers of a thermosetting resin of an adequate degree of flowability, preferably from the group of polyesters, extending into the interior of these molds, to whose resin catalysts have been initially added in a proportion of 0.5 to 2% and accelerators in a ratio of 0.01 to 0.1% in order to obtain the subsequent setting thereof, which takes place by polymerization within the mold itself, from which it is extracted after the consolidating the elaborated piece, which externally presents a surface with an aspect consistent with that of the interior of the aforementioned mold. (Machine-translation by Google Translate, not legally binding)
ES0235944A1957-06-081957-06-08Procedure for the manufacture, by molding, of pieces of plastic material (Machine-translation by Google Translate, not legally binding)
ExpiredES235944A3
(en)
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