GB1264320A - - Google Patents
Info
- Publication number
- GB1264320A GB1264320A GB5265868A GB1264320DA GB1264320A GB 1264320 A GB1264320 A GB 1264320A GB 5265868 A GB5265868 A GB 5265868A GB 1264320D A GB1264320D A GB 1264320DA GB 1264320 A GB1264320 A GB 1264320A
- Authority
- GB
- United Kingdom
- Prior art keywords
- charge
- mould
- injection
- probe
- orifice
- 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
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/08—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles using several expanding or moulding steps
- B29C44/083—Increasing the size of the cavity after a first part has foamed, e.g. substituting one mould part with another
- B29C44/086—Increasing the size of the cavity after a first part has foamed, e.g. substituting one mould part with another and feeding more material into the enlarged cavity
-
- 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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
-
- 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
- B29C45/16—Making multilayered or multicoloured articles
- B29C2045/167—Making multilayered or multicoloured articles injecting the second layer through the first layer
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/83—Injection molding of polyolefin-type foam
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
1,264,320. Injection moulding. IMPERIAL CHEMICAL INDUSTRIES Ltd. 22 Oct., 1969 [6 Nov., 1968], No. 52658/68, Heading B5A. In a process of making laminar articles from synthetic polymeric materials, a first charge of material is injected into a mould through a first injection orifice and when the charge has consolidated, the mould cavity is enlarged and a second charge is injected through a second orifice at the end of a probe which extends through the layer formed by the injection of the first charge. The injection orifice at the end of the probe may engage with and be closed by one of the faces of the mould cavity during injection of the first charge. One of the charges may be of foamable material, or a first part thereof may be unfoamable. The mould may be enlarged to allow the foamable material to foam, the probe being either telescopic or received in a recess in the mould wall. The moulding may be removed by gas under pressure. One of the mould walls may be lined with a removable insert to be incorporated in the moulded article which may be a motor vehicle panel or furniture. Suitable thermoplastic and thermosetting polymers are specified and suitable fillers.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5265868 | 1968-11-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1264320A true GB1264320A (en) | 1972-02-23 |
Family
ID=10464774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5265868A Expired GB1264320A (en) | 1968-11-06 | 1968-11-06 |
Country Status (3)
Country | Link |
---|---|
US (1) | UST883004I4 (en) |
DE (1) | DE1954478A1 (en) |
GB (1) | GB1264320A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2122871A1 (en) * | 1994-05-21 | 1998-12-16 | Petri Ag | Covering means for air-bag-collision-safety means as well as process for the production thereof |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4414258C2 (en) * | 1994-04-23 | 1996-07-25 | Battenfeld Gmbh | Process for injection molding objects consisting of at least two different layers |
-
1968
- 1968-11-06 GB GB5265868A patent/GB1264320A/en not_active Expired
-
1969
- 1969-10-27 US US883004D patent/UST883004I4/en active Pending
- 1969-10-29 DE DE19691954478 patent/DE1954478A1/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2122871A1 (en) * | 1994-05-21 | 1998-12-16 | Petri Ag | Covering means for air-bag-collision-safety means as well as process for the production thereof |
Also Published As
Publication number | Publication date |
---|---|
DE1954478A1 (en) | 1970-06-11 |
UST883004I4 (en) | 1971-02-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |