FOAM AND CLOSED-CELL EXPANDED SHRINKABLE FORM WITH DELAYED SHAPE RESTORABILITY USING THE SAME AND ITS PRODUCTION

PROBLEM TO BE SOLVED: To obtain a closed-cell expanded shrinkable form high in heat resistance in particular, suppressed in elasticity decline after left to stand under a compressed condition, and having moderate delayed shape restorability, and to provide a method for producing such a form. SOLUTIO...

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Bibliographische Detailangaben
Hauptverfasser:	TAGUCHI HIDEYUKI, SHIRATO HITOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain a closed-cell expanded shrinkable form high in heat resistance in particular, suppressed in elasticity decline after left to stand under a compressed condition, and having moderate delayed shape restorability, and to provide a method for producing such a form. SOLUTION: This closed-cell expanded shrinkable form is such one that a thermoplastic expanded sheet 10-100 vol.% in closed cell content is left to stand for a week with its thickness held at a given level under heating at 50 deg.C, released from the given thickness-holding state in an atmosphere at 23 deg.C and then allowed to stand; then, the thickness of the sheet is expanded by a factor of 1.7 or greater within 25 days.