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US 11,833,723 B2Granted
Blow-molded foam and process for producing the same
AssigneeKyoraku Co., Ltd.
InventorsMasaaki Onodera, Takehiko Sumi, Teruo Tamada, Yu Igarashi, Yoshinori Ohno
Life of this patent
Estimating the term…
Abstract
The present invention provides a process for producing a blow-molded foam including foamed cells, the process including: kneading a polyolefin-based resin containing a foaming agent mixed therewith in an extruder, and extruding a parison formed of the polyolefin-based resin between split mold blocks from a die slit at an extrusion rate of 700 kg/h or more.
Claims9
A process for producing a blow-molded foam including foamed cells, the process comprising:
- kneading a polyolefin-based resin containing a foaming agent mixed therewith in an extruder, and
- extruding a parison formed of the polyolefin-based resin between split mold blocks from a die slit at an extrusion rate of 700 kg/h or more,
- wherein the polyolefin-based resin is a propylene homopolymer having a long-chain branched structure.
Dependencies are inferred from the claim text.