ATE55944T1 - FORM AND METHOD OF FORMING EXPANDABLE PLASTIC PARTICLES. - Google Patents
FORM AND METHOD OF FORMING EXPANDABLE PLASTIC PARTICLES.Info
- Publication number
- ATE55944T1 ATE55944T1 AT85307193T AT85307193T ATE55944T1 AT E55944 T1 ATE55944 T1 AT E55944T1 AT 85307193 T AT85307193 T AT 85307193T AT 85307193 T AT85307193 T AT 85307193T AT E55944 T1 ATE55944 T1 AT E55944T1
- Authority
- AT
- Austria
- Prior art keywords
- chamber
- cavity
- manifold
- mould
- wall portion
- Prior art date
Links
- 239000002245 particle Substances 0.000 title 1
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000011324 bead Substances 0.000 abstract 1
- 239000002826 coolant Substances 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000012508 resin bead Substances 0.000 abstract 1
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
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Molding Of Porous Articles (AREA)
Abstract
Prefoamed resin beads are introduced into a mould cavity defined by separable wall portions of the mould. The mould has a chamber defined exteriorly of and associated with each wall portion with a heating medium introduced into the chamber to heat the corresponding wall portion, and a cooling medium introduced into the chamber to cool the wall portion when needed. Steam, condensate, and cooling water can be removed from the chamber. A number of nozzles are provided in at least one of the wall portions of the cavity with tubes connecting the nozzles to a manifold located in the chamber, each nozzle being flush with the inner wall of the cavity and so small as to prevent marking of the moulding produced in the cavity. Pressurised heating medium being introduced into the manifold for injection into the cavity to expand the prefoamed beads with the manifold having an arrangement to provide controlled discharge of steam or condensate from the manifold.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/667,067 US4627946A (en) | 1983-11-07 | 1984-11-01 | Method and molding apparatus for molding expanded polystyrene articles having smooth surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE55944T1 true ATE55944T1 (en) | 1990-09-15 |
Family
ID=24676664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT85307193T ATE55944T1 (en) | 1984-11-01 | 1985-10-08 | FORM AND METHOD OF FORMING EXPANDABLE PLASTIC PARTICLES. |
Country Status (8)
| Country | Link |
|---|---|
| KR (1) | KR900003736B1 (en) |
| AT (1) | ATE55944T1 (en) |
| BR (1) | BR8505332A (en) |
| DE (1) | DE3579411D1 (en) |
| ES (1) | ES8703764A1 (en) |
| IN (1) | IN164319B (en) |
| MX (1) | MX163967B (en) |
| PT (1) | PT81361B (en) |
-
1985
- 1985-10-08 DE DE8585307193T patent/DE3579411D1/en not_active Expired - Lifetime
- 1985-10-08 AT AT85307193T patent/ATE55944T1/en not_active IP Right Cessation
- 1985-10-10 IN IN845/DEL/85A patent/IN164319B/en unknown
- 1985-10-23 PT PT81361A patent/PT81361B/en not_active IP Right Cessation
- 1985-10-25 BR BR8505332A patent/BR8505332A/en not_active IP Right Cessation
- 1985-10-28 MX MX412A patent/MX163967B/en unknown
- 1985-10-31 ES ES548444A patent/ES8703764A1/en not_active Expired
- 1985-10-31 KR KR1019850008118A patent/KR900003736B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES548444A0 (en) | 1987-03-01 |
| BR8505332A (en) | 1986-08-05 |
| KR860003899A (en) | 1986-06-13 |
| MX163967B (en) | 1992-07-07 |
| PT81361B (en) | 1987-09-18 |
| KR900003736B1 (en) | 1990-05-30 |
| ES8703764A1 (en) | 1987-03-01 |
| PT81361A (en) | 1985-11-01 |
| IN164319B (en) | 1989-02-18 |
| DE3579411D1 (en) | 1990-10-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| UEP | Publication of translation of european patent specification | ||
| REN | Ceased due to non-payment of the annual fee |