COMBINED-TYPE FOAM INJECTION MOLDED PRODUCT AND MANUFACTURING METHOD THEREFORE

WIPO Patent Application WO/2024/090610

A1

A combined-type foam injection molded product and a manufacturing method therefor are provided. The manufacturing method for the combined-type foam injection molded product comprises the steps of: i) providing a reinforcement member manufactured through 3D printing; ii) providing the reinforcement member to at least one mold part selected from the group consisting of an upper mold part and a lower mold part; iii) forming a hollow space by coupling the upper mold part and the lower mold part; iv) providing a mixture in which a molten product is mixed with a foaming agent; v) injecting the mixture into the hollow space; vi) providing a combined-type foam injection molded product including the reinforcement member and a foam resin obtained by foaming the mixture in the hollow space; and vii) separating the upper mold part and the lower mold part so as to withdraw the combined-type foam injection molded product.

JPS5416573	MOLD FOR INJECTION MOLDING OF FOAMABLE RESIN TO GIVE MOLDED ARTICLES HAVING THROUGH-HOLES INSIDE
WO/1999/033629	METHOD FOR MANUFACTURING A FOAMED MOULDED BODY FROM A MASS COMPRISING NATURAL POLYMERS AND WATER
WO/2015/154849	PROCESS FOR MOULDING AND CO-MOULDING ULTRA-LOW DENSITY EXPANDED TPU WITH STATIC INJECTION MACHINES AND PRODUCT OBTAINED WITH THIS PROCESS

LIM BYOUNGMUN (KR)
LIM DAEHWI (KR)
CHOI IN CHEOL (KR)
KWON MIN JI (KR)

PCT/KR2022/016556

May 02, 2024

October 27, 2022

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COMTECH CHEMICAL CO LTD (KR)

B29C44/42; B29C44/02; B29C44/58; B29C45/14; B29C45/24; B29C45/26; B29C45/40

KR101847969B1	2018-04-11
US20220110408A1	2022-04-14
KR19990012846A	1999-02-25
KR20030050833A	2003-06-25
KR100828908B1	2008-05-09

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