GB1131361A - Method for the manufacture of shaped hollow articles from thermoplastic sheet material - Google Patents

Method for the manufacture of shaped hollow articles from thermoplastic sheet material

Info

Publication number
GB1131361A
GB1131361A GB160765A GB160765A GB1131361A GB 1131361 A GB1131361 A GB 1131361A GB 160765 A GB160765 A GB 160765A GB 160765 A GB160765 A GB 160765A GB 1131361 A GB1131361 A GB 1131361A
Authority
GB
United Kingdom
Prior art keywords
sheet
thermoplastic sheet
manufacture
sheet material
shaped hollow
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
GB160765A
Inventor
Thomas Edward Horace Gray
James Jones-Hinton
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.)
Dunlop Co Ltd
Original Assignee
Dunlop Co 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 Dunlop Co Ltd filed Critical Dunlop Co Ltd
Priority to GB160765A priority Critical patent/GB1131361A/en
Publication of GB1131361A publication Critical patent/GB1131361A/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
    • B29C51/10—Forming by pressure difference, e.g. vacuum

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

1,131,361. Sheet forming. DUNLOP CO. Ltd. 6 Oct., 1965 [14 Oct., 1964], No. 1607/65. Heading B5A. Hollow peripheries are formed by vacuum drawing a heat-softened clamped thermoplastic sheet on to a heated first forming surface to form domes therein, said domes having a height substantially equal to half the height of the required hemisphere, and then transferring the domed sheet to a second forming member on which the hemispheres are finally formed. The first surface is a vertically reciprocable male die (19) having projections (20) and the second surface is a vertically reciprocable female die (29) having corresponding recesses, to which the domed sheet is transferred by a combination of vacuum and blowing. In an alternative embodiment the first surface may be a female die and the second a male die. Two such hemispheres are superimposed and butt-welded around their circumference to form a ball.
GB160765A 1964-10-14 1964-10-14 Method for the manufacture of shaped hollow articles from thermoplastic sheet material Expired GB1131361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB160765A GB1131361A (en) 1964-10-14 1964-10-14 Method for the manufacture of shaped hollow articles from thermoplastic sheet material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB160765A GB1131361A (en) 1964-10-14 1964-10-14 Method for the manufacture of shaped hollow articles from thermoplastic sheet material

Publications (1)

Publication Number Publication Date
GB1131361A true GB1131361A (en) 1968-10-23

Family

ID=9724874

Family Applications (1)

Application Number Title Priority Date Filing Date
GB160765A Expired GB1131361A (en) 1964-10-14 1964-10-14 Method for the manufacture of shaped hollow articles from thermoplastic sheet material

Country Status (1)

Country Link
GB (1) GB1131361A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5108529A (en) * 1989-09-05 1992-04-28 Shuert Lyle H Method of forming a twin sheet plastic pallet using preforming

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5108529A (en) * 1989-09-05 1992-04-28 Shuert Lyle H Method of forming a twin sheet plastic pallet using preforming

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