GB1390509A - Moulding of articles of plastics materials - Google Patents

Moulding of articles of plastics materials

Info

Publication number
GB1390509A
GB1390509A GB3293771A GB3293771A GB1390509A GB 1390509 A GB1390509 A GB 1390509A GB 3293771 A GB3293771 A GB 3293771A GB 3293771 A GB3293771 A GB 3293771A GB 1390509 A GB1390509 A GB 1390509A
Authority
GB
United Kingdom
Prior art keywords
plunger
mould cavities
moulding
injection
knobs
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
GB3293771A
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.)
Healey Mouldings Ltd
Original Assignee
Healey Mouldings Ltd
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 Healey Mouldings Ltd filed Critical Healey Mouldings Ltd
Priority to GB3293771A priority Critical patent/GB1390509A/en
Publication of GB1390509A publication Critical patent/GB1390509A/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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/02—Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity

Landscapes

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

Abstract

1390509 Injection and compression moulding HEALEY MOULDINGS Ltd 16 Oct 1972 [14 July 1971] 32937/71 Heading B5A Thermosetting material P is injected by a device 8 into a primary cavity 5 whence it is forced by a plunger 9 into heated mould cavities 6, the plunger compressing the material in the mould cavities and substantially closing the mould cavities from the primary cavity 5 while the material is cured. A layer of flash may form across the plunger face. Mould cavities for knobs are formed entirely within the bolster 3 through which injection occurs or partly in the plunger 9. Ejection pins 10 may be shaped to form sockets in the knobs. Both bolsters 3, 4 are electrically heated and injection passage 7 is cooled. The moulding machine may be horizontal or vertical.
GB3293771A 1971-07-14 1971-07-14 Moulding of articles of plastics materials Expired GB1390509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3293771A GB1390509A (en) 1971-07-14 1971-07-14 Moulding of articles of plastics materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3293771A GB1390509A (en) 1971-07-14 1971-07-14 Moulding of articles of plastics materials

Publications (1)

Publication Number Publication Date
GB1390509A true GB1390509A (en) 1975-04-16

Family

ID=10346214

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3293771A Expired GB1390509A (en) 1971-07-14 1971-07-14 Moulding of articles of plastics materials

Country Status (1)

Country Link
GB (1) GB1390509A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469270A1 (en) * 1979-11-16 1981-05-22 Labarre M Transfer mould for use with pin-head gate injection moulding tool - for rapid moulding of thin wall containers with low base stress levels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469270A1 (en) * 1979-11-16 1981-05-22 Labarre M Transfer mould for use with pin-head gate injection moulding tool - for rapid moulding of thin wall containers with low base stress levels

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee