PRODUCING METHOD OF POLYOLEFIN BEAD FOAM WITH TWO MELTING TEMPERATURES BY USING CONTINUOUS EXTRUDING PROCESS AND ITS FABRICATION

PURPOSE: A manufacturing method a polyolefin bead foam and a manufacturing method of a foamed mold using thereof are provided to secure the compressive strength, the recovery rate, and elastic force of a bead foam, and to reuse the foam without melting or expanding. CONSTITUTION: A manufacturing met...

Full description

Saved in:
Bibliographic Details
Main Author LEE, KEE YOON
Format Patent
LanguageEnglish
Korean
Published 04.05.2010
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
CHEMISTRY
COMPOSITIONS BASED THEREON
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
Online AccessGet full text

Cover

More Information
Summary:PURPOSE: A manufacturing method a polyolefin bead foam and a manufacturing method of a foamed mold using thereof are provided to secure the compressive strength, the recovery rate, and elastic force of a bead foam, and to reuse the foam without melting or expanding. CONSTITUTION: A manufacturing method of a foamed mold comprises the following steps; drying polypropylene copolymers with two melting points produced by a spherizone process; producing beads by foaming the dried polypropylene copolymers using a continuous extrusion foaming process; and molding the beads inside a mold. The difference between two melting points of the polypropylene copolymers is 4~12 deg C. The molding process is operated in the temperature between two melting points at the pressure of 2~5.
Bibliography:Application Number: KR20080104687