FR2061829A5 - Lost-core plastics moulding - Google Patents

Lost-core plastics moulding

Info

Publication number
FR2061829A5
FR2061829A5 FR6915550A FR6915550A FR2061829A5 FR 2061829 A5 FR2061829 A5 FR 2061829A5 FR 6915550 A FR6915550 A FR 6915550A FR 6915550 A FR6915550 A FR 6915550A FR 2061829 A5 FR2061829 A5 FR 2061829A5
Authority
FR
France
Prior art keywords
lost
core
plastics moulding
core plastics
plastics
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.)
Expired
Application number
FR6915550A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR6915550A priority Critical patent/FR2061829A5/en
Application granted granted Critical
Publication of FR2061829A5 publication Critical patent/FR2061829A5/en
Expired legal-status Critical Current

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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/52—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles soluble or fusible
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/448—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles destructible
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/44—Removing or ejecting moulded articles for undercut articles
    • B29C45/4457—Removing or ejecting moulded articles for undercut articles using fusible, soluble or destructible cores

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

Lost-core plastics moulding. Polyamide taps are compression or injection moulded using a core of solid material, pref. stearin, sugar or Pb-Sn-Bi alloy of m.pt. 100 degrees, which can be removed by liquefaction or disaggregation. Specifically, the plastics solidifies on the core before the latter begins to melt.
FR6915550A 1969-05-22 1969-05-22 Lost-core plastics moulding Expired FR2061829A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6915550A FR2061829A5 (en) 1969-05-22 1969-05-22 Lost-core plastics moulding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6915550A FR2061829A5 (en) 1969-05-22 1969-05-22 Lost-core plastics moulding

Publications (1)

Publication Number Publication Date
FR2061829A5 true FR2061829A5 (en) 1971-06-25

Family

ID=9034006

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6915550A Expired FR2061829A5 (en) 1969-05-22 1969-05-22 Lost-core plastics moulding

Country Status (1)

Country Link
FR (1) FR2061829A5 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2427188A1 (en) * 1978-05-31 1979-12-28 Nitto Electric Ind Co PROCESS FOR PRODUCING A MOLDED PLASTIC ARTICLE CONTAINING A HOLLOW PORTION OF COMPLICATED SHAPE
EP0173447A2 (en) * 1984-07-24 1986-03-05 Clarks Limited Hollow body injection moulding process using a soluble core
WO1993013926A1 (en) * 1988-11-10 1993-07-22 R. Alkan & Cie Method and apparatus for fabricating hollow parts made of draped composite material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2427188A1 (en) * 1978-05-31 1979-12-28 Nitto Electric Ind Co PROCESS FOR PRODUCING A MOLDED PLASTIC ARTICLE CONTAINING A HOLLOW PORTION OF COMPLICATED SHAPE
EP0173447A2 (en) * 1984-07-24 1986-03-05 Clarks Limited Hollow body injection moulding process using a soluble core
EP0173447A3 (en) * 1984-07-24 1988-02-03 Clarks Limited Hollow body injection moulding process using a soluble core
WO1993013926A1 (en) * 1988-11-10 1993-07-22 R. Alkan & Cie Method and apparatus for fabricating hollow parts made of draped composite material

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Legal Events

Date Code Title Description
ST Notification of lapse