GB1333427A - Moulding - Google Patents
MouldingInfo
- Publication number
- GB1333427A GB1333427A GB1333427DA GB1333427A GB 1333427 A GB1333427 A GB 1333427A GB 1333427D A GB1333427D A GB 1333427DA GB 1333427 A GB1333427 A GB 1333427A
- Authority
- GB
- United Kingdom
- Prior art keywords
- insert
- moulding
- walls
- mould
- core
- 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
- 238000000465 moulding Methods 0.000 title abstract 5
- 229920003023 plastic Polymers 0.000 abstract 5
- 239000004033 plastic Substances 0.000 abstract 5
- 239000000463 material Substances 0.000 abstract 3
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000001746 injection moulding Methods 0.000 abstract 1
- 238000000034 method 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
- 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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
-
- 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
- B29C44/04—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 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- 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
- B29C45/1642—Making multilayered or multicoloured articles having a "sandwich" structure
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
1333427 Moulds; injection moulding GKN SANKEY Ltd 16 Feb 1972 [16 Dec 1970] 59675/70 Heading B5A The invention relates to a mould comprising three or more walls 10-13 arranged so that of each group of three adjacent walls, one edge of the centre wall engages the planar surface of one of the outer walls, and one edge of the other outer wall engages the planar surface of the centre wall, the walls being movable to vary the size of the mould cavity while maintaining inter-wall engagement. According to the invention the mould cavity is closed by first and second end members 25, 26, respectively, the second end member 26 being apertured to receive a core 28, and first and second means are provided for moving the core 28 and an insert 31 respectively away from the first end member 25 simultaneously with increase in the cross-sectional size of the cavity. The mould is used in a "sandwich moulding" process in which a non-foamable plastics material is first injected into the space 20 between the insert 31 and the mould walls, and then a foamable plastic is injected within the non-foamable plastic. Injection is effected with the parts in the positions shown in Figs. 1 and 2. The mould cavity is enlarged to the position shown in Fig. 3 and in dotted lines in Fig. 1 and the foamable material allowed to expand. The insert 31 is arranged to move half the distance moved by the core 28. The insert 31 may be a container. If not sufficiently strong to withstand the moulding pressure the container may be filled with e.g. a low m.p. alloy which is removed after moulding is complete. Alternatively the insert itself may be of a material which is removed from the plastic sandwich after moulding to leave a hollow container. The means 32 for holding the insert in position extends through an aperture in the plastic sandwich layer. As shown the insert is a container having a neck 35 received in an aperture 36 in the core.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5967570 | 1970-12-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1333427A true GB1333427A (en) | 1973-10-10 |
Family
ID=10484195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1333427D Expired GB1333427A (en) | 1970-12-16 | 1970-12-16 | Moulding |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1333427A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998016364A2 (en) * | 1996-10-11 | 1998-04-23 | Coraltech Limited | Method of injection moulding a foamed article |
GB2333739A (en) * | 1996-10-11 | 1999-08-04 | Coraltech Ltd | Method of injection moulding a foamed article |
GB2433719A (en) * | 2005-12-28 | 2007-07-04 | Nihon Plast Co Ltd | Insert moulded foamed and non-foamed layers |
-
1970
- 1970-12-16 GB GB1333427D patent/GB1333427A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998016364A2 (en) * | 1996-10-11 | 1998-04-23 | Coraltech Limited | Method of injection moulding a foamed article |
WO1998016364A3 (en) * | 1996-10-11 | 1998-06-18 | Coraltech Ltd | Method of injection moulding a foamed article |
GB2333739A (en) * | 1996-10-11 | 1999-08-04 | Coraltech Ltd | Method of injection moulding a foamed article |
GB2333739B (en) * | 1996-10-11 | 2001-03-21 | Coraltech Ltd | Foamed article |
US6358446B1 (en) | 1996-10-11 | 2002-03-19 | Coraltech Limited | Method of injection moulding a foamed article |
GB2433719A (en) * | 2005-12-28 | 2007-07-04 | Nihon Plast Co Ltd | Insert moulded foamed and non-foamed layers |
GB2433719B (en) * | 2005-12-28 | 2010-07-14 | Nihon Plast Co Ltd | Mold goods and insert molding method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1183408A (en) | Method for the Manufacture of Thin Walled Containers | |
IE782519L (en) | Moulding containers | |
GB1211301A (en) | Method of producing a lined hollow body of foamed plastics material | |
CA998508A (en) | Mold for forming plastic foam parts | |
CA935965A (en) | Mold for preparing a shaped article made of foamed thermoplastic resin and method for preparation therefor | |
GB1109748A (en) | Process for the production of moulded shaped structures having foamed cores | |
ES450759A1 (en) | Process for mould release of hollow plastic bodies moulded by blowing by means of a nozzle | |
GB1003033A (en) | Improvements in and relating to moulds | |
CA1009414A (en) | Venting construction for molds for forming plastic foam parts | |
GB1333427A (en) | Moulding | |
GB1114304A (en) | Method and device for forming a hollow plastic article | |
GB1064920A (en) | Method of manufacturing luggage | |
GB1134740A (en) | Method and apparatus for making and filling plastic containers | |
SE7410701L (en) | ||
CA994067A (en) | Mold for forming plastic foam parts and method of constructing the same | |
JPS5630828A (en) | Injection blow molding of hollow vessel with handle | |
JPS56121745A (en) | Foaming resin injection molding method | |
GB1333587A (en) | Injection moulding synthetic plastics articles | |
GB1090810A (en) | Improvements in methods of and apparatus for injection-moulding hot water bottles | |
JPS55113541A (en) | Molding of hollow synthetic resin molded article | |
GB1226129A (en) | ||
GB1446025A (en) | Moulding process | |
GB1180833A (en) | A Method for Producing a Moulded Article, in Particular a Shoe Sole. | |
JPS57105323A (en) | Method for molding synthetic resin | |
GB1436107A (en) | Injection moulding apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |