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ESBE
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ESBE
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Application filed by ESBEfiledCriticalESBE
Priority to FR7037851ApriorityCriticalpatent/FR2108924A1/fr
Publication of FR2108924A1publicationCriticalpatent/FR2108924A1/fr
Application grantedgrantedCritical
Publication of FR2108924B1publicationCriticalpatent/FR2108924B1/fr
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
B29C44/34—Auxiliary operations
B29C44/3461—Making or treating expandable particles
FR7037851A1970-10-201970-10-20Polystyrene expansion vessel - admitting various quantities of steam to control product density
GrantedFR2108924A1
(en)