ES426706A1 - Moulding of plastics foam - Google Patents
Moulding of plastics foamInfo
- Publication number
- ES426706A1 ES426706A1 ES426706A ES426706A ES426706A1 ES 426706 A1 ES426706 A1 ES 426706A1 ES 426706 A ES426706 A ES 426706A ES 426706 A ES426706 A ES 426706A ES 426706 A1 ES426706 A1 ES 426706A1
- Authority
- ES
- Spain
- Prior art keywords
- foam
- support
- forming members
- reaction mixture
- relative movement
- 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
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
- B29C44/586—Moulds with a cavity increasing in size during foaming
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
- Road Signs Or Road Markings (AREA)
- Electrotherapy Devices (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
A method of molding a plastic foam block with a substantially flat top surface, in which a foam-forming reaction mixture is deposited on a support and forming members are provided to give the desired contours to the faces of the block, characterized Because when the reaction mixture begins to foam, the support is lowered to effect relative movement between the support and the forming members at a rate substantially equal to the rate of depth increase of the foam, thereby maintaining substantially constant contact area between the foam and the forming members and stopping the relative movement when the foam stops increasing in depth. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2543073A GB1425612A (en) | 1973-05-29 | 1973-05-29 | Moulding of plastics foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES426706A1 true ES426706A1 (en) | 1977-01-01 |
Family
ID=10227546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES426706A Expired ES426706A1 (en) | 1973-05-29 | 1974-05-28 | Moulding of plastics foam |
Country Status (19)
| Country | Link |
|---|---|
| JP (1) | JPS5022064A (en) |
| AR (1) | AR199346A1 (en) |
| BE (1) | BE815707A (en) |
| BR (1) | BR7404347D0 (en) |
| CA (1) | CA1021118A (en) |
| CH (1) | CH582056A5 (en) |
| DE (1) | DE2426212A1 (en) |
| DK (1) | DK288874A (en) |
| ES (1) | ES426706A1 (en) |
| FI (1) | FI162074A (en) |
| FR (1) | FR2231503B1 (en) |
| GB (1) | GB1425612A (en) |
| IE (1) | IE39398B1 (en) |
| IT (1) | IT1037060B (en) |
| NL (1) | NL7406809A (en) |
| NO (1) | NO140461C (en) |
| SE (1) | SE402067B (en) |
| ZA (1) | ZA743202B (en) |
| ZM (1) | ZM8074A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4666393A (en) * | 1986-06-13 | 1987-05-19 | Human Industry Corporation | Apparatus for manufacturing polyurethane foam slabs in a batch |
| GB2291002A (en) * | 1994-07-08 | 1996-01-17 | Hoover Universal | Apparatus and method for producing blocks of foam |
| CN111745882A (en) * | 2020-06-11 | 2020-10-09 | 溧阳市山湖实业有限公司 | PU sheet downward moving type foaming production process and production equipment thereof |
| CN111974938A (en) * | 2020-08-27 | 2020-11-24 | 杭州欧宸科技有限公司 | Full-automatic foam mold forming machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2588151A (en) * | 1948-09-30 | 1952-03-04 | Gen Electric | Apparatus for producing uniform foam structures |
| US2649620A (en) * | 1951-08-01 | 1953-08-25 | Union Carbide & Carbon Corp | Casting expanded plastics |
-
1973
- 1973-05-29 GB GB2543073A patent/GB1425612A/en not_active Expired
-
1974
- 1974-05-20 ZA ZA00743202A patent/ZA743202B/en unknown
- 1974-05-21 ZM ZM80/74A patent/ZM8074A1/en unknown
- 1974-05-21 NO NO741847A patent/NO140461C/en unknown
- 1974-05-21 NL NL7406809A patent/NL7406809A/xx not_active Application Discontinuation
- 1974-05-22 CA CA200,521A patent/CA1021118A/en not_active Expired
- 1974-05-27 FI FI1620/74A patent/FI162074A/fi unknown
- 1974-05-28 BR BR4347/74A patent/BR7404347D0/en unknown
- 1974-05-28 ES ES426706A patent/ES426706A1/en not_active Expired
- 1974-05-28 SE SE7407047A patent/SE402067B/en unknown
- 1974-05-28 DK DK288874A patent/DK288874A/da not_active Application Discontinuation
- 1974-05-28 CH CH728474A patent/CH582056A5/xx not_active IP Right Cessation
- 1974-05-29 IE IE1131/74A patent/IE39398B1/en unknown
- 1974-05-29 JP JP49060670A patent/JPS5022064A/ja active Pending
- 1974-05-29 DE DE19742426212 patent/DE2426212A1/en not_active Withdrawn
- 1974-05-29 BE BE144898A patent/BE815707A/en unknown
- 1974-05-29 FR FR7418609A patent/FR2231503B1/fr not_active Expired
- 1974-05-29 AR AR253971A patent/AR199346A1/en active
- 1974-06-14 IT IT7423973A patent/IT1037060B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2231503A1 (en) | 1974-12-27 |
| IE39398B1 (en) | 1978-09-27 |
| FR2231503B1 (en) | 1976-12-24 |
| ZM8074A1 (en) | 1974-12-20 |
| BE815707A (en) | 1974-09-16 |
| NO741847L (en) | 1974-12-02 |
| AR199346A1 (en) | 1974-08-23 |
| SE7407047L (en) | 1974-12-02 |
| CA1021118A (en) | 1977-11-22 |
| ZA743202B (en) | 1975-05-28 |
| GB1425612A (en) | 1976-02-18 |
| BR7404347D0 (en) | 1975-01-21 |
| AU6923274A (en) | 1975-11-27 |
| FI162074A (en) | 1974-11-30 |
| DE2426212A1 (en) | 1974-12-19 |
| IE39398L (en) | 1974-11-29 |
| CH582056A5 (en) | 1976-11-30 |
| NO140461C (en) | 1979-09-05 |
| IT1037060B (en) | 1979-11-10 |
| JPS5022064A (en) | 1975-03-08 |
| SE402067B (en) | 1978-06-19 |
| NL7406809A (en) | 1974-12-03 |
| NO140461B (en) | 1979-05-28 |
| DK288874A (en) | 1975-01-20 |
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