GB1279590A - Improvements in or relating to moulds - Google Patents
Improvements in or relating to mouldsInfo
- Publication number
- GB1279590A GB1279590A GB2671271A GB2671271A GB1279590A GB 1279590 A GB1279590 A GB 1279590A GB 2671271 A GB2671271 A GB 2671271A GB 2671271 A GB2671271 A GB 2671271A GB 1279590 A GB1279590 A GB 1279590A
- Authority
- GB
- United Kingdom
- Prior art keywords
- passage
- blind
- injection
- april
- moulds
- 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
- 238000002347 injection Methods 0.000 abstract 5
- 239000007924 injection Substances 0.000 abstract 5
- 239000000463 material Substances 0.000 abstract 3
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000006260 foam Substances 0.000 abstract 1
- 238000001746 injection moulding Methods 0.000 abstract 1
- 229920001187 thermosetting polymer Polymers 0.000 abstract 1
- 238000004804 winding Methods 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
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
- B29C44/581—Closure devices for pour holes
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
1279590 Injection moulds SEMPERIT AG 19 April 1971 [21 April 1970] 26712/71 Heading B5A In a mould for the injection moulding of foamable material, the injection passage 2 is split longitudinally over at least a part of its length, the two parts being separable for the withdrawal of sprue therefrom, and a blind passage 3 opens into the injection passage so that injected material fills the blind passage 3 first, foams and then closes off the injection passage. The blind passage is preferably arranged at an angle α, is at least partially thermally insulated and, for thermosetting materials, has heater windings 5. The injection passage 2 is preferably angled as shown. Two, three or more blind passages may be provided, and two blind passages may be arranged opposite one another.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT360670A AT307713B (en) | 1970-04-21 | 1970-04-21 | Automatically closable injection channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1279590A true GB1279590A (en) | 1972-06-28 |
Family
ID=3552840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2671271A Expired GB1279590A (en) | 1970-04-21 | 1971-04-19 | Improvements in or relating to moulds |
Country Status (4)
| Country | Link |
|---|---|
| AT (1) | AT307713B (en) |
| DE (1) | DE2118307A1 (en) |
| FR (1) | FR2086215A1 (en) |
| GB (1) | GB1279590A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2418247C3 (en) * | 1974-04-13 | 1978-11-23 | Elastogran Maschinenbau Gmbh & Co, 8021 Strasslach | Split mold for multi-component plastics, especially polyurethanes |
-
1970
- 1970-04-21 AT AT360670A patent/AT307713B/en not_active IP Right Cessation
-
1971
- 1971-04-15 DE DE19712118307 patent/DE2118307A1/en active Pending
- 1971-04-19 FR FR7113759A patent/FR2086215A1/fr not_active Withdrawn
- 1971-04-19 GB GB2671271A patent/GB1279590A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2086215A1 (en) | 1971-12-31 |
| DE2118307A1 (en) | 1971-11-04 |
| AT307713B (en) | 1973-06-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |