ES319739A1 - Method of and apparatus for the manufacture of hollow articles from thermoplastic material - Google Patents

Method of and apparatus for the manufacture of hollow articles from thermoplastic material

Info

Publication number
ES319739A1
ES319739A1 ES0319739A ES319739A ES319739A1 ES 319739 A1 ES319739 A1 ES 319739A1 ES 0319739 A ES0319739 A ES 0319739A ES 319739 A ES319739 A ES 319739A ES 319739 A1 ES319739 A1 ES 319739A1
Authority
ES
Spain
Prior art keywords
preform
slug
die
mould
vacuum
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
ES0319739A
Other languages
Spanish (es)
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.)
Unilever NV
Original Assignee
Unilever NV
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 Unilever NV filed Critical Unilever NV
Publication of ES319739A1 publication Critical patent/ES319739A1/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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/18—Thermoforming apparatus
    • B29C51/20—Thermoforming apparatus having movable moulds or mould parts
    • B29C51/22—Thermoforming apparatus having movable moulds or mould parts rotatable about an axis
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/02—Combined thermoforming and manufacture of the preform

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

A method of moulding a hollow article comprises the steps of depositing a molten slug of thermoplastic material, e.g. PVC, into a heated die, compressing the slug into a flat preform and subsequently deep drawing or vacuum forming said preform to the final shape whilst it is still held in said die. In one embodiment (see the Figure) a slug from a withdrawable extrusion head 1 is deposited into a die 2 and is compressed into a preform by a plunger 3. The bottom 4 of the die is then lowered, the preform being retained in its position, and vacuum applied to the space below the preform to suck it into contact with the lowered bottom to form the finished article. In a second embodiment (see Figs. 2 and 3, not shown) a slug (13) is deposited into one of several dies mounted upon a rotating table (8) and the table indexed to a station at which a preform is formed by a plunger (12). A second rotating table (9) carrying vacuum moulds (14) is partially superimposed above table (8) so that the preform may be indexed under a mould (14) carried by the table 9 and vacuum formed therein. The article is retained by the mould and the table (9) indexed to bring the mould to an ejection station where the finished article is removed.
ES0319739A 1964-11-18 1965-11-18 Method of and apparatus for the manufacture of hollow articles from thermoplastic material Expired ES319739A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4699964A GB1087143A (en) 1964-11-18 1964-11-18 Method of and apparatus for the manufacture of hollow articles from thermoplastic material

Publications (1)

Publication Number Publication Date
ES319739A1 true ES319739A1 (en) 1966-06-01

Family

ID=10443355

Family Applications (2)

Application Number Title Priority Date Filing Date
ES0319739A Expired ES319739A1 (en) 1964-11-18 1965-11-18 Method of and apparatus for the manufacture of hollow articles from thermoplastic material
ES0326251A Expired ES326251A1 (en) 1964-11-18 1966-05-02 Apparatus for the manufacture of hollow articles. (Machine-translation by Google Translate, not legally binding)

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES0326251A Expired ES326251A1 (en) 1964-11-18 1966-05-02 Apparatus for the manufacture of hollow articles. (Machine-translation by Google Translate, not legally binding)

Country Status (6)

Country Link
BE (1) BE672502A (en)
CH (1) CH431033A (en)
DE (1) DE1629190A1 (en)
ES (2) ES319739A1 (en)
GB (1) GB1087143A (en)
LU (1) LU49874A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9296143B2 (en) * 2009-10-20 2016-03-29 Teijin Chemicals, Ltd. Process of manufacturing a curved member having a high-grade design surface and member manufactured by the process
US20170348896A1 (en) * 2014-12-17 2017-12-07 Kiefel Gmbh Method for producing a thermoformed product, and installation and machine therefore
CN112959701B (en) * 2021-02-04 2023-03-17 汕头市欧派客塑胶有限公司 Processing technology of plastic cup

Also Published As

Publication number Publication date
ES326251A1 (en) 1967-07-01
LU49874A1 (en) 1966-01-18
CH431033A (en) 1967-02-28
GB1087143A (en) 1967-10-11
BE672502A (en) 1966-03-16
DE1629190A1 (en) 1971-01-21

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