GB1528429A - Apparatus for the plasticiing and melting of synthetic plastics material - Google Patents

Apparatus for the plasticiing and melting of synthetic plastics material

Info

Publication number
GB1528429A
GB1528429A GB666877A GB666877A GB1528429A GB 1528429 A GB1528429 A GB 1528429A GB 666877 A GB666877 A GB 666877A GB 666877 A GB666877 A GB 666877A GB 1528429 A GB1528429 A GB 1528429A
Authority
GB
United Kingdom
Prior art keywords
aperture
section
channel depth
screw
adjacent
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
GB666877A
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.)
GKN Windsor GmbH
Original Assignee
GKN Windsor GmbH
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 GKN Windsor GmbH filed Critical GKN Windsor GmbH
Priority to GB666877A priority Critical patent/GB1528429A/en
Publication of GB1528429A publication Critical patent/GB1528429A/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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/20—Injection nozzles
    • B29C45/23—Feed stopping equipment
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/58—Details
    • B29C45/63—Venting or degassing means

Landscapes

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

Abstract

1528429 Injection moulding plasticizer GKN WINDSOR GmbH 17 Feb 1977 06668/77 Heading B5A Injection moulding apparatus for plasticizing and melting plastics material, comprises an axially reciprocable screw 2 within a heatable barrel which has an inlet 11 supplied with the material from an adjustable vibrating feed 32 and a vent aperture 12 for gas from the material, the screw comprising in the downstream direction, a feed section 21 of constant channel depth adjacent the aperture 11; a section 22 of greater compression comprising a channel depth which increases throughout its length, or may terminate in or be interrupted by a part of constant channel depth; a thread free collar 28 defining an annular shearing gap with the barrel; a section 24 of greater channel depth than section 21 in which the material is at atmospheric pressure, so that it does not escape from the aperture 12, and which is adjacent the aperture 12 in all axial positions of the screw, and whose rear third of length is adjacent the aperture 12 in the most downstream axial position of the screw; and a following section 24 of increasing, and then constant channel depth. The outlet end of the apparatus includes a reciprocable valve 51, and additional de-gassing may be permitted by a clearance between the inlet 11 and an inlet duct thereto from the feed 32.
GB666877A 1977-02-17 1977-02-17 Apparatus for the plasticiing and melting of synthetic plastics material Expired GB1528429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB666877A GB1528429A (en) 1977-02-17 1977-02-17 Apparatus for the plasticiing and melting of synthetic plastics material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB666877A GB1528429A (en) 1977-02-17 1977-02-17 Apparatus for the plasticiing and melting of synthetic plastics material

Publications (1)

Publication Number Publication Date
GB1528429A true GB1528429A (en) 1978-10-11

Family

ID=9818637

Family Applications (1)

Application Number Title Priority Date Filing Date
GB666877A Expired GB1528429A (en) 1977-02-17 1977-02-17 Apparatus for the plasticiing and melting of synthetic plastics material

Country Status (1)

Country Link
GB (1) GB1528429A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0090600A2 (en) * 1982-03-26 1983-10-05 Warner-Lambert Company Method for molding capsules
EP2322338A3 (en) * 2009-11-11 2013-01-02 Baratti Engineering GmbH Device and method for injection moulding of plastic parts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0090600A2 (en) * 1982-03-26 1983-10-05 Warner-Lambert Company Method for molding capsules
EP0090600A3 (en) * 1982-03-26 1984-05-09 Warner-Lambert Company Apparatus and method for molding capsules
EP2322338A3 (en) * 2009-11-11 2013-01-02 Baratti Engineering GmbH Device and method for injection moulding of plastic parts

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Legal Events

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