WO2007026257A3 - Apparatus and method for advanced structural foam molding - Google Patents

Apparatus and method for advanced structural foam molding Download PDF

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Publication number
WO2007026257A3
WO2007026257A3 PCT/IB2006/003364 IB2006003364W WO2007026257A3 WO 2007026257 A3 WO2007026257 A3 WO 2007026257A3 IB 2006003364 W IB2006003364 W IB 2006003364W WO 2007026257 A3 WO2007026257 A3 WO 2007026257A3
Authority
WO
WIPO (PCT)
Prior art keywords
polymer matrix
structural
foam molding
structural foam
technology
Prior art date
Application number
PCT/IB2006/003364
Other languages
French (fr)
Other versions
WO2007026257A2 (en
Inventor
Chul B Park
Xiang Xu
Original Assignee
Chul B Park
Xiang Xu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CA 2517995 external-priority patent/CA2517995A1/en
Application filed by Chul B Park, Xiang Xu filed Critical Chul B Park
Priority to JP2008528600A priority Critical patent/JP2009506909A/en
Priority to EP06820982A priority patent/EP1937455A2/en
Publication of WO2007026257A2 publication Critical patent/WO2007026257A2/en
Publication of WO2007026257A3 publication Critical patent/WO2007026257A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
    • B29C44/421—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum by plastizising the material into a shot cavity and injecting using a plunger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3442—Mixing, kneading or conveying the foamable material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3469—Cell or pore nucleation

Abstract

An advanced structural foam molding technology for improving the dispersion of the blowing agent in the polymer matrix has been invented, This technological innovation is an Improvement on the well-known existing low-pressure structural foarn molding technology based on the preplasticating-type (so called piggy-bag) injection-molding machines. By introducing means for continuing the polymer matrix melt flow stream, preferably an additional accumulator and a gear pump, the processing conditions become more consistent to disperse the injected gas more uniformly in the polymer matrix. By using this technology, the structural foams have a smaller cell size, a more uniform cell structure, a larger void fraction (i.e., more material saving), less surface swirl, and less weld line contrast.
PCT/IB2006/003364 2005-09-02 2006-08-30 Apparatus and method for advanced structural foam molding WO2007026257A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2008528600A JP2009506909A (en) 2005-09-02 2006-08-30 Latest structure foam molding apparatus and method
EP06820982A EP1937455A2 (en) 2005-09-02 2006-08-30 Apparatus and method for advanced structural foam molding

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA 2517995 CA2517995A1 (en) 2005-09-02 2005-09-02 Apparatus and method for advanced structural foam molding
US11/219,309 2005-09-02
US11/219,309 US20070052124A1 (en) 2005-09-02 2005-09-02 Apparatus and method for advanced structural foam molding
CA2,517,995 2005-09-02

Publications (2)

Publication Number Publication Date
WO2007026257A2 WO2007026257A2 (en) 2007-03-08
WO2007026257A3 true WO2007026257A3 (en) 2007-08-02

Family

ID=37809250

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/003364 WO2007026257A2 (en) 2005-09-02 2006-08-30 Apparatus and method for advanced structural foam molding

Country Status (2)

Country Link
EP (1) EP1937455A2 (en)
WO (1) WO2007026257A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020061535A1 (en) * 2018-09-21 2020-03-26 Nike, Inc. Molding system and method
CN110253824B (en) * 2019-05-31 2021-01-08 界首市旭升塑胶制品有限公司 Plastic shoe blowing foaming injection machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4124308A (en) * 1977-06-21 1978-11-07 Beloit Corporation Sequential co-injection unit adapted for structural foam molding
CA2284517A1 (en) * 1997-03-20 1998-09-24 Eastman Chemical Company Apparatus and method for molding of polyester articles directly from a melt
US6322347B1 (en) * 1999-04-02 2001-11-27 Trexel, Inc. Methods for manufacturing foam material including systems with pressure restriction element

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4124308A (en) * 1977-06-21 1978-11-07 Beloit Corporation Sequential co-injection unit adapted for structural foam molding
CA2284517A1 (en) * 1997-03-20 1998-09-24 Eastman Chemical Company Apparatus and method for molding of polyester articles directly from a melt
US6322347B1 (en) * 1999-04-02 2001-11-27 Trexel, Inc. Methods for manufacturing foam material including systems with pressure restriction element

Also Published As

Publication number Publication date
EP1937455A2 (en) 2008-07-02
WO2007026257A2 (en) 2007-03-08

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