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公开(公告)号：US20230031181A1
公开(公告)日：2023-02-02
申请号：US17784149
申请日：2020-10-30
发明人： Seong Soo BAE , Chul Ee KANG , Sang Jin LEE , Jae Hyeok LEE
摘要： The present invention relates to a method preparing a highly functional foam by a physical foaming process (physical blowing agent-based foaming) used to prepare a midsole of a shoe, and relates to a technology that is environmentally friendly because a chemical foaming agent is not used and is capable of preparing a foam with improved physical properties at a low cost by shortening a processing time. To this end, according to the present invention, a physical foaming process of preparing a foam by using a foaming press provided with a cavity includes: an injecting step of injecting a foaming compounding resin into the cavity; a closing step of closing the cavity by using the foaming press; a gas injecting step of injecting gas into the cavity; an atmospheric pressure maintaining step of dissolving the gas in the foaming compounding resin by maintaining the inside of the cavity at a constant pressure; and a foaming step of performing foaming by opening the cavity so that the inside of the cavity is depressurized.
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2.发明公开公开(公告)号：US20240001598A1
公开(公告)日：2024-01-04
申请号：US18039430
申请日：2021-11-22
发明人： Seong Soo BAE , Chul Ee KANG , Jae Hyeok LEE , Won Jun KANG , Han Soo SONG
CPC分类号： B29C44/58 , B29C44/027 , B29L2031/504
摘要： This disclosure relates to a foam-molding mold having channels formed therein and a physical foaming process using the same, and more specifically, the foam-molding mold is characterized by comprising a cavity formed therein for accommodating mixed resin for foaming, and having channels formed therein for guiding gas to the cavity.
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