FR2249756A1 - Injection mould has half moulds of glass sphere/plastic foam mixt. - and mould face is formed by sand/epoxy resin mixture - Google Patents
Injection mould has half moulds of glass sphere/plastic foam mixt. - and mould face is formed by sand/epoxy resin mixtureInfo
- Publication number
- FR2249756A1 FR2249756A1 FR7340218A FR7340218A FR2249756A1 FR 2249756 A1 FR2249756 A1 FR 2249756A1 FR 7340218 A FR7340218 A FR 7340218A FR 7340218 A FR7340218 A FR 7340218A FR 2249756 A1 FR2249756 A1 FR 2249756A1
- Authority
- FR
- France
- Prior art keywords
- mould
- blocks
- sand
- epoxy resin
- plastic foam
- 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.)
- Granted
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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/30—Mounting, exchanging or centering
-
- 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
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
-
- 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
-
- 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
- B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
-
- 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
- B29C33/20—Opening, closing or clamping
-
- 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
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
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)
Abstract
A mould comprises two interchangeable half-mould blocks. held between two horizontal frames connected by tie rods which can be tightened so that the frames clamp the half-mould blocks together. Adjacent faces of the blocks are provided with a seal and are profiled to form mould faces which together define a moulding cavity into which a thermoplastic can be injected through inlet ducts, and one of the mould blocks has a degassing duct through which excess gas can escape from the moulding cavity. Each half-mould block is formed from a layer of a mixture of glass spheres and a plastic foam and a layer (whose free face forms the mould face) of a mixture of sand and epoxy resin. The mould is used for producing boat hulls, vehicle body panels etc. The half-mould blocks are cheap to produce and light and easy to handle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7340218A FR2249756A1 (en) | 1973-11-07 | 1973-11-07 | Injection mould has half moulds of glass sphere/plastic foam mixt. - and mould face is formed by sand/epoxy resin mixture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7340218A FR2249756A1 (en) | 1973-11-07 | 1973-11-07 | Injection mould has half moulds of glass sphere/plastic foam mixt. - and mould face is formed by sand/epoxy resin mixture |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2249756A1 true FR2249756A1 (en) | 1975-05-30 |
FR2249756B3 FR2249756B3 (en) | 1976-09-24 |
Family
ID=9127627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7340218A Granted FR2249756A1 (en) | 1973-11-07 | 1973-11-07 | Injection mould has half moulds of glass sphere/plastic foam mixt. - and mould face is formed by sand/epoxy resin mixture |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2249756A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5033950A (en) * | 1983-12-14 | 1991-07-23 | Sacmi-Cooperativa Meccanici Imola-Soc. Coop. A R.L. | Mold for molding ceramic materials |
FR2710288A1 (en) * | 1993-09-22 | 1995-03-31 | Renaudet Daniel | Composite mould for compression press |
-
1973
- 1973-11-07 FR FR7340218A patent/FR2249756A1/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5033950A (en) * | 1983-12-14 | 1991-07-23 | Sacmi-Cooperativa Meccanici Imola-Soc. Coop. A R.L. | Mold for molding ceramic materials |
FR2710288A1 (en) * | 1993-09-22 | 1995-03-31 | Renaudet Daniel | Composite mould for compression press |
Also Published As
Publication number | Publication date |
---|---|
FR2249756B3 (en) | 1976-09-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CD | Change of name or company name | ||
CN | Change in juridical nature | ||
ST | Notification of lapse |