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GB972325A - An improved pressure forming process for thermoplastic sheet material - Google Patents

An improved pressure forming process for thermoplastic sheet material

Info

Publication number
GB972325A
GB972325A GB1517462A GB1517462A GB972325A GB 972325 A GB972325 A GB 972325A GB 1517462 A GB1517462 A GB 1517462A GB 1517462 A GB1517462 A GB 1517462A GB 972325 A GB972325 A GB 972325A
Authority
GB
United Kingdom
Prior art keywords
mould
sheet
pipe
thermoplastic sheet
heater
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
GB1517462A
Inventor
Sidney Walter Fagence
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.)
ML Shelley and Partners Ltd
Original Assignee
ML Shelley and Partners 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 ML Shelley and Partners Ltd filed Critical ML Shelley and Partners Ltd
Priority to GB1517462A priority Critical patent/GB972325A/en
Publication of GB972325A publication Critical patent/GB972325A/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
    • B29C51/04—Combined thermoforming and prestretching, e.g. biaxial stretching
    • B29C51/06—Combined thermoforming and prestretching, e.g. biaxial stretching using pressure difference for prestretching
    • 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

972,325. Moulding Hollow articles. M. L. SHELLEY & PARTNERS Ltd. April 17, 1963 [April 19, 1962], No. 15174/62. Heading B5A. In a method of pressure forming thermoplastic sheet material, a thermoplastic sheet 5 is clamped by the frame 2 of a heater 1 to the upper surface of a cavitied mould 3, the heater softening the sheet 5 whence suction is applied through a pipe 7 causing the sheet to be preextended with an upward bulge to the form 5a, whereafter compressed air is then applied through the pipe 7, thus blowing the softened, extended sheet into the or each mould cavity 4. To aid in the moulding, vacuum may be applied through the pipe 8 and chamber 9 which is connected to the or each mould cavity 4 through passage 10. In the various alternative embodiments described, the sheet is pre-extended mechanically by a single plug 20, Figs. 4 to 7 (not shown), a plug 31 with projections 32 corresponding to the mould cavities, and having a counterpart 33, Figs. 8 to 12 (not shown), a plurality of plugs corresponding to the mould cavities in conjunction with a shaped heater, Figs. 13-16 (not shown), a movable mould, Figs. 17 to 20 (not shown), and by a plurality of plugs emerging from the mould itself, Figs. 21 to 25 (not shown). Specification 882,391 is referred to.
GB1517462A 1962-04-19 1962-04-19 An improved pressure forming process for thermoplastic sheet material Expired GB972325A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1517462A GB972325A (en) 1962-04-19 1962-04-19 An improved pressure forming process for thermoplastic sheet material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1517462A GB972325A (en) 1962-04-19 1962-04-19 An improved pressure forming process for thermoplastic sheet material

Publications (1)

Publication Number Publication Date
GB972325A true GB972325A (en) 1964-10-14

Family

ID=10054330

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1517462A Expired GB972325A (en) 1962-04-19 1962-04-19 An improved pressure forming process for thermoplastic sheet material

Country Status (1)

Country Link
GB (1) GB972325A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497059A (en) * 1966-11-02 1970-02-24 American Packaging Corp Package and method for making same
GB2330552A (en) * 1997-10-25 1999-04-28 Px Technologies Ltd Press station
US6210531B1 (en) 1998-10-26 2001-04-03 Px Technologies, Ltd. Forming machines
EP1367438A3 (en) * 2002-05-31 2006-07-12 Tohoku Pioneer Corporation Insulating resin film and method of forming fine patterns of insulating resin film
FR2903934A1 (en) * 2006-07-21 2008-01-25 Axon Cable Soc Par Actions Sim THERMOFORMING UNIT AND METHOD FOR OBTAINING COMPLEX SHAPES
CN103282179A (en) * 2010-12-29 2013-09-04 乐金华奥斯有限公司 Vacuum mold having a reverse solid pattern, and vacuum-orming method using same
WO2016155940A1 (en) * 2015-03-30 2016-10-06 Webasto SE Device for moulding a mould section onto a plate-like workpiece with vacuum chamber
CN112873750A (en) * 2021-02-03 2021-06-01 宁波信泰机械有限公司 One-outlet multi-cavity air inlet balance structure of IMD (in-mold decoration) high-pressure forming die
CN113276390A (en) * 2021-06-08 2021-08-20 刘丹涛 Manufacturing device for air bag pressurization fixing multi-point self-forming plastic suction upper die and using method thereof

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497059A (en) * 1966-11-02 1970-02-24 American Packaging Corp Package and method for making same
GB2330552A (en) * 1997-10-25 1999-04-28 Px Technologies Ltd Press station
GB2330552B (en) * 1997-10-25 2002-08-14 Px Technologies Ltd Improvements relating to forming machines
US6210531B1 (en) 1998-10-26 2001-04-03 Px Technologies, Ltd. Forming machines
EP1367438A3 (en) * 2002-05-31 2006-07-12 Tohoku Pioneer Corporation Insulating resin film and method of forming fine patterns of insulating resin film
FR2903934A1 (en) * 2006-07-21 2008-01-25 Axon Cable Soc Par Actions Sim THERMOFORMING UNIT AND METHOD FOR OBTAINING COMPLEX SHAPES
EP1880827A3 (en) * 2006-07-21 2008-05-21 Axon'cable Unit and method of thermoforming used to obtain complex shapes
CN103282179A (en) * 2010-12-29 2013-09-04 乐金华奥斯有限公司 Vacuum mold having a reverse solid pattern, and vacuum-orming method using same
WO2016155940A1 (en) * 2015-03-30 2016-10-06 Webasto SE Device for moulding a mould section onto a plate-like workpiece with vacuum chamber
CN112873750A (en) * 2021-02-03 2021-06-01 宁波信泰机械有限公司 One-outlet multi-cavity air inlet balance structure of IMD (in-mold decoration) high-pressure forming die
CN113276390A (en) * 2021-06-08 2021-08-20 刘丹涛 Manufacturing device for air bag pressurization fixing multi-point self-forming plastic suction upper die and using method thereof

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