GB911647A - Improvements relating to heating platens of vacuum forming machines - Google Patents
Improvements relating to heating platens of vacuum forming machinesInfo
- Publication number
- GB911647A GB911647A GB2305359A GB2305359A GB911647A GB 911647 A GB911647 A GB 911647A GB 2305359 A GB2305359 A GB 2305359A GB 2305359 A GB2305359 A GB 2305359A GB 911647 A GB911647 A GB 911647A
- Authority
- GB
- United Kingdom
- Prior art keywords
- elements
- platen
- heating
- vacuum forming
- sets
- 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
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
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/42—Heating or cooling
- B29C51/421—Heating or cooling of preforms, specially adapted for thermoforming
- B29C51/422—Heating or cooling of preforms, specially adapted for thermoforming to produce a temperature differential
-
- 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)
- Moulds For Moulding Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
911,647. Electric heating platens. PARNALL & SONS Ltd. Sept. 26, 1960 [July 4, 1959], No. 23053/59. Class 39 (3). [Also in Group V] A heating platen in a vacuum forming machine incorporates an electric heating element or set of elements 12a-12c effective over a central area of the platen, and one or more separate elements or sets of elements 13a-13d and 14a- 14d disposed symmetrically about the central element or set of elements, each element or set of elements being independently controlled so as to provide a plurality of independentlyheated zones over the heating surface of the platen. The higher heat losses occurring at the edges of the platen may thus be offset, or the outer elements may be switched off to conserve energy when forming a small area of material. The heating elements are of the sheathed type and are secured to and spaced from a reflector plate by tie bolts 11 and angle sections 10. The elements of each set are connected in parallel by means of connector blocks 16 and connections are made through a conduit box 17 to three switches for the individual control of the sets of elements. The platen is mounted between a pair of arms 19 by trunnions 18, and is provided with four angle sections 20 forming a peripheral lip.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2305359A GB911647A (en) | 1959-07-04 | 1959-07-04 | Improvements relating to heating platens of vacuum forming machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2305359A GB911647A (en) | 1959-07-04 | 1959-07-04 | Improvements relating to heating platens of vacuum forming machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB911647A true GB911647A (en) | 1962-11-28 |
Family
ID=10189344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2305359A Expired GB911647A (en) | 1959-07-04 | 1959-07-04 | Improvements relating to heating platens of vacuum forming machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB911647A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2185010A1 (en) * | 1972-05-18 | 1973-12-28 | Int Fabric Molders Inc | |
GB2172542A (en) * | 1985-03-19 | 1986-09-24 | Hazeldine Ind Group Limited | Moulds |
GB2259665A (en) * | 1991-09-17 | 1993-03-24 | Ford Motor Co | Moulding a reinforced plastics component |
EP3650197A1 (en) * | 2018-11-06 | 2020-05-13 | Uwe Beier | Method and apparatus for forming flat substrates |
-
1959
- 1959-07-04 GB GB2305359A patent/GB911647A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2185010A1 (en) * | 1972-05-18 | 1973-12-28 | Int Fabric Molders Inc | |
GB2172542A (en) * | 1985-03-19 | 1986-09-24 | Hazeldine Ind Group Limited | Moulds |
GB2259665A (en) * | 1991-09-17 | 1993-03-24 | Ford Motor Co | Moulding a reinforced plastics component |
US5266259A (en) * | 1991-09-17 | 1993-11-30 | Ford Motor Company | Molding a reinforced plastics component |
EP3650197A1 (en) * | 2018-11-06 | 2020-05-13 | Uwe Beier | Method and apparatus for forming flat substrates |
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