GB1241306A - Process and apparatus for the production of expanded thermoplastic articles - Google Patents
Process and apparatus for the production of expanded thermoplastic articlesInfo
- Publication number
- GB1241306A GB1241306A GB5107168A GB5107168A GB1241306A GB 1241306 A GB1241306 A GB 1241306A GB 5107168 A GB5107168 A GB 5107168A GB 5107168 A GB5107168 A GB 5107168A GB 1241306 A GB1241306 A GB 1241306A
- Authority
- GB
- United Kingdom
- Prior art keywords
- beads
- mould
- hopper
- supplied
- conveyers
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/206—Using expandable particles or beads as starting material
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/22—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/22—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/24—Making multilayered articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
1,241,306. Moulding cellular articles. COMPAGNIE DE SAINT-GOBAIN. 28 Oct., 1968 [6 Dec., 1967; 15 Jan., 1968], No. 51071/68. Heading B5A. A method of obtaining moulded articles from beads of a thermoplastics material containing a blowing agent, comprises the steps of preheating the beads to soften them, introducing the preheated beads into a mould and heating the beads in the mould with superheated steam. Beads 1 are fed by gravity from a hopper 2, Fig. 1, on to a belt 3 above which is located a band conveyer 4. Hot air is introduced into one of a set of boxes 6, 7 and the opposite one of which is connected to vacuum. Superheated steam is supplied by jets 8 in box 9 below which is a box 10 connected to vacuum. The moulded slab then passes between conveyers 16, 17 which may be closer together than the conveyers 3, 4 and the slab is cooled by cold air circulating between boxes 11, 12. In another example, Fig. 6 (not shown), the hopper has two compartments containing beads of different size or density so that a layered product as shown in Fig. 7, is produced, the beads in the outer layers 65a and 65c having a higher density than those of central layer 65b. The formed sheet may be undulated by passing it between slatted conveyers. The slats may be shaped to provide egg or fruit receiving cavities in the sheet. The sheet may be transversely or longitudinally corrugated by passing it between opposed rollers or belts after heating, e.g. by infra-red lamps, if necessary. In an example, Fig. 2, for making discrete articles, beads 22 are fed by hot air from a hopper 23 into a perforated mould 18. Steam is supplied via pipes 24 to the mould jacket 19 and superheated steam is supplied to the mould cavity via pipes 26 after replacing the hopper with a cover and, if desired, the diffuser 20 with a base. The hopper may be connected to the mould by a pipe through which the beads are supplied to the mould by a hot air stream.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR131156A FR1555781A (en) | 1967-12-06 | 1967-12-06 | |
| FR135998A FR93792E (en) | 1967-12-06 | 1968-01-15 | Process and devices for the molding of expandable thermoplastic materials. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1241306A true GB1241306A (en) | 1971-08-04 |
Family
ID=26181419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5107168A Expired GB1241306A (en) | 1967-12-06 | 1968-10-28 | Process and apparatus for the production of expanded thermoplastic articles |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT308384B (en) |
| BE (1) | BE725012A (en) |
| FI (1) | FI51442C (en) |
| FR (1) | FR93792E (en) |
| GB (1) | GB1241306A (en) |
| NL (1) | NL164505C (en) |
| SE (1) | SE349773B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1738888A3 (en) * | 2005-06-01 | 2007-11-21 | Heikki Korpela | Method and machine for forming a continuous web of a porous thermoplastic |
| CN114401833A (en) * | 2019-09-10 | 2022-04-26 | 西格弗里德霍夫曼有限公司 | Apparatus for treating particulate foam material to produce particulate foam molded parts |
-
1968
- 1968-01-15 FR FR135998A patent/FR93792E/en not_active Expired
- 1968-10-08 AT AT983968A patent/AT308384B/en active
- 1968-10-28 GB GB5107168A patent/GB1241306A/en not_active Expired
- 1968-11-26 SE SE1609768A patent/SE349773B/xx unknown
- 1968-12-03 FI FI344568A patent/FI51442C/en active
- 1968-12-04 NL NL6817332A patent/NL164505C/en not_active IP Right Cessation
- 1968-12-05 BE BE725012D patent/BE725012A/xx not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1738888A3 (en) * | 2005-06-01 | 2007-11-21 | Heikki Korpela | Method and machine for forming a continuous web of a porous thermoplastic |
| CN114401833A (en) * | 2019-09-10 | 2022-04-26 | 西格弗里德霍夫曼有限公司 | Apparatus for treating particulate foam material to produce particulate foam molded parts |
Also Published As
| Publication number | Publication date |
|---|---|
| FR93792E (en) | 1969-05-16 |
| BE725012A (en) | 1969-06-05 |
| AT308384B (en) | 1973-07-10 |
| NL6817332A (en) | 1969-06-10 |
| DE1809577A1 (en) | 1969-10-16 |
| NL164505C (en) | 1981-01-15 |
| NL164505B (en) | 1980-08-15 |
| SE349773B (en) | 1972-10-09 |
| FI51442B (en) | 1976-09-30 |
| FI51442C (en) | 1977-01-10 |
| DE1809577B2 (en) | 1975-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3238565A (en) | Continuous hot forming apparatus | |
| US3832429A (en) | Method and apparatus for the production of sheet on block of agglomerated granules of polystryrene | |
| US3065500A (en) | Method and apparatus for making coherent bodies from expandable granules of thermoplastic | |
| US3170974A (en) | Process for embossing foamed thermoplastic sheets | |
| SU865121A3 (en) | Method of making porous plastic material articles | |
| FR1454766A (en) | Manufacturing process of molded articles of polyethylene terephthalate | |
| US2315366A (en) | Converting bulk compound into vulcanized sponge rubber | |
| IE800914L (en) | Making plastic articles from recycled material. | |
| US2200262A (en) | Rubber molding and vulcanizing process | |
| US3832106A (en) | Apparatus for the production of shaped articles of expanded cohered granules of thermoplastic material, in particular polystyrene | |
| GB1233650A (en) | ||
| ES453215A1 (en) | Method of blow-molding hollow shaped articles, including intermediate tempering and final biaxial stretching stages | |
| GB1093238A (en) | Process for producing a cellular product from expanded pearls of synthetic resin | |
| ES8308256A1 (en) | Method of and apparatus for manufacturing moulded plastics pieces or articles. | |
| GB1241306A (en) | Process and apparatus for the production of expanded thermoplastic articles | |
| ES8606092A1 (en) | Method and apparatus for flanging tubular polymer articles. | |
| US3709651A (en) | Apparatus for the production of shaped articles of expanded cohered granules of thermoplastic material, in particular polystyrene | |
| GB1082630A (en) | Process for obtaining pearls of expanded polystyrene | |
| ES444086A1 (en) | Apparatus for the continuous production of oriented hollow bodies from a thermoplastic material | |
| GB1523506A (en) | Method and apparatus for moulding expanded plastics materiial articles | |
| US4207063A (en) | Apparatus for molding hollow objects of thermoplastic resins | |
| JPS56159127A (en) | Manufacture of fresnel lens | |
| KR860008871A (en) | Process for molding plastic products from multiple layers of thermoplastics | |
| AU6684900A (en) | Method and device for blow-forming containers | |
| CA1055667A (en) | Manufacture of thin walled plastics material articles |