CA2375903A1 - Spring-loaded ejectors for wood strand molding - Google Patents

Spring-loaded ejectors for wood strand molding Download PDF

Info

Publication number
CA2375903A1
CA2375903A1 CA002375903A CA2375903A CA2375903A1 CA 2375903 A1 CA2375903 A1 CA 2375903A1 CA 002375903 A CA002375903 A CA 002375903A CA 2375903 A CA2375903 A CA 2375903A CA 2375903 A1 CA2375903 A1 CA 2375903A1
Authority
CA
Canada
Prior art keywords
wood strand
mold apparatus
spring
psi
molded
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002375903A
Other languages
French (fr)
Other versions
CA2375903C (en
Inventor
Bruce A. Haataja
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Strandwood Molding Inc
Original Assignee
Strandwood Molding, Inc.
Bruce A. Haataja
Gfp Strandwood Corp.
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
Application filed by Strandwood Molding, Inc., Bruce A. Haataja, Gfp Strandwood Corp. filed Critical Strandwood Molding, Inc.
Publication of CA2375903A1 publication Critical patent/CA2375903A1/en
Application granted granted Critical
Publication of CA2375903C publication Critical patent/CA2375903C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N5/00—Manufacture of non-flat articles
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/50—Removing moulded articles
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2311/00—Use of natural products or their composites, not provided for in groups B29K2201/00 - B29K2309/00, as reinforcement
    • B29K2311/14—Wood, e.g. woodboard or fibreboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/14—Wood, e.g. woodboard or fibreboard

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

Mold apparatus and method of production and ejection of molded wood strand three-dimensionally curved articles of manufacture, molded from a loosely felted flake mat, using an ejector pin assembly within said mold apparatus having ejector pins with pin head diameters of at least about 0.750 inches or greater, that exert a loaded ejector pin pressure of from approximately about 100 psi to about 1000 psi, to eject the molded wood strand article from the mold apparatus without causing excessive indentation and densification within the mat during mold processing.
CA002375903A 2000-05-30 2000-05-30 Spring-loaded ejectors for wood strand molding Expired - Fee Related CA2375903C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2000/014710 WO2001091986A1 (en) 2000-05-30 2000-05-30 Spring-loaded ejectrors for wood strand molding

Publications (2)

Publication Number Publication Date
CA2375903A1 true CA2375903A1 (en) 2001-12-06
CA2375903C CA2375903C (en) 2006-02-21

Family

ID=21741427

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002375903A Expired - Fee Related CA2375903C (en) 2000-05-30 2000-05-30 Spring-loaded ejectors for wood strand molding

Country Status (2)

Country Link
CA (1) CA2375903C (en)
WO (1) WO2001091986A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102896680B (en) * 2012-08-14 2015-02-18 宁波大世界家具研发有限公司 Combined die and die-pressing method for wood fibre die-pressed part
SE2250741A1 (en) * 2022-06-17 2023-12-18 Pulpac AB Ejection element, forming mould comprising an ejection element and method for forming cellulose products
SE2250742A1 (en) * 2022-06-17 2023-12-18 Pulpac AB Deformation element, forming mould comprising a deformation element and method for forming cellulose products
SE2250829A1 (en) * 2022-07-01 2024-01-02 Pulpac AB Forming mould comprising a movable element and method for forming cellulose products

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975127A (en) * 1973-02-28 1976-08-17 Furnier-Und Sperrholzwerk J. F. Werz, Jr. Kg Werzalit-Pressholzwerk Apparatus for making shaped articles
BG18244A1 (en) * 1973-04-25 1974-10-25
US4440708A (en) * 1978-12-21 1984-04-03 Board Of Control Of Michigan Technological University Method for molding articles having non-planar portions from matted wood flakes
US4351789A (en) * 1981-07-27 1982-09-28 The B. F. Goodrich Company Mold and process for molding
US5059372A (en) * 1987-04-16 1991-10-22 Klais Guenter Process and apparatus for producing compressed solid briquettes
CA1299831C (en) * 1988-05-16 1992-05-05 James Simon Sheffield Stack mold with blow off pin and spring chamber
JP2971774B2 (en) * 1995-03-20 1999-11-08 日本碍子株式会社 Release jig for polymer material mold

Also Published As

Publication number Publication date
WO2001091986A1 (en) 2001-12-06
CA2375903C (en) 2006-02-21

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed