JPS56121743A - Indirect heating method for foamed-resin molding machine and metal mold therefor - Google Patents
Indirect heating method for foamed-resin molding machine and metal mold thereforInfo
- Publication number
- JPS56121743A JPS56121743A JP2552580A JP2552580A JPS56121743A JP S56121743 A JPS56121743 A JP S56121743A JP 2552580 A JP2552580 A JP 2552580A JP 2552580 A JP2552580 A JP 2552580A JP S56121743 A JPS56121743 A JP S56121743A
- Authority
- JP
- Japan
- Prior art keywords
- heating
- pipes
- preheat
- cavity
- 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.)
- Pending
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
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
- B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
-
- 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
- B29C44/3415—Heating or cooling
- B29C44/3426—Heating by introducing steam in the mould
Landscapes
- Molding Of Porous Articles (AREA)
Abstract
PURPOSE:To shorten a heating time and conserve steam for heating by fixing preheat pipes to the back surface of the metal mold for molding foamed thermoplastic resin, introducing high-pressure steam into the pipes and thereby heating the metal mold indirectly. CONSTITUTION:When operations for die-opening and releasing are ended, an operation for die- closing is started, and concurrently with this operation, a cavity-side high-pressure steam valve 19 and a core-side high-pressure steam valve 20 are opened and a high-pressure steam flows into the cavity-side preheat pipe 21 and the core-side preheat pipe 22. Simultaneously with the opening of the abovementioned steam valves, a cavity-side drain valve 23 and a core-side drain valve 24 are also opened. There drain valves are closed just when the drain remaining in a lot inside both preheat pipes 21 and 22 is discharged from the inside of the pipes. The preheat pipes 21 and 23 are made to work in parallel by both-surface heating. At almost the same time when the subsequent filling operation is ended and heating operation is started, a cavity-side metal die 2 and a core-side metal die 4 is heated up to the temperature of about 100 deg.C by the preheat pipes 21 and 22. On the other hand, simultaneously with completion of heating and both-surface heating, the cavity- side high-pressure valve 19 and the core-side high-pressure valve 20 are also closed and thus indirect heating is also completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2552580A JPS56121743A (en) | 1980-02-29 | 1980-02-29 | Indirect heating method for foamed-resin molding machine and metal mold therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2552580A JPS56121743A (en) | 1980-02-29 | 1980-02-29 | Indirect heating method for foamed-resin molding machine and metal mold therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56121743A true JPS56121743A (en) | 1981-09-24 |
Family
ID=12168459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2552580A Pending JPS56121743A (en) | 1980-02-29 | 1980-02-29 | Indirect heating method for foamed-resin molding machine and metal mold therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56121743A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008254270A (en) * | 2007-04-03 | 2008-10-23 | Kaneka Corp | Method for manufacturing in-mold foamed molding |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5511831A (en) * | 1978-07-10 | 1980-01-28 | Sekisui Plastics Co Ltd | Metal mould |
| JPS5514243A (en) * | 1978-07-18 | 1980-01-31 | Mitsubishi Petrochem Co Ltd | Foaming mold for thermoplastic synthetic resin |
-
1980
- 1980-02-29 JP JP2552580A patent/JPS56121743A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5511831A (en) * | 1978-07-10 | 1980-01-28 | Sekisui Plastics Co Ltd | Metal mould |
| JPS5514243A (en) * | 1978-07-18 | 1980-01-31 | Mitsubishi Petrochem Co Ltd | Foaming mold for thermoplastic synthetic resin |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008254270A (en) * | 2007-04-03 | 2008-10-23 | Kaneka Corp | Method for manufacturing in-mold foamed molding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6579489B1 (en) | Process for gas assisted and water assisted injection molding | |
| US4438064A (en) | Injection molding process for synthetic resin and its apparatus | |
| US4390486A (en) | Method and apparatus for heating a mold cavity uniformly | |
| EP0365684A4 (en) | Molding method and molding apparatus by use of injection-compression molding machine | |
| KR20000014842A (en) | Plastic injection molding metal mold having cavity rapid heating device | |
| JPS56121743A (en) | Indirect heating method for foamed-resin molding machine and metal mold therefor | |
| CN100358703C (en) | Device and method for runner-less molding of thermosetting resin and rubber | |
| EP0004844A2 (en) | Apparatus for manufacturing plastic products | |
| SE7701822L (en) | KIT MOLDING KIT AND APPLIANCE | |
| Kazmer et al. | Towards controllability of injection molding | |
| CN208930634U (en) | A kind of multifunctional accurate plastic mould molding machine | |
| EP0124951A3 (en) | Method, injection moulding machine and injection mould for producing holder shaped products, holder shaped products and hot runner system | |
| JPS57185125A (en) | Foam molding machine of styrol, etc. | |
| US4065531A (en) | Method for molding products from particulate polymeric material | |
| CA2348128A1 (en) | Process for gas assisted and water assisted injection molding | |
| JP2672733B2 (en) | Mold for molding and molding method | |
| JPS5660228A (en) | Heating method for mold in foam molding machine | |
| CN2897622Y (en) | Temperature adjuster of chord wave bi-temperature mould | |
| CN219338472U (en) | Energy-saving type temperature control equipment for POM (point of sale) die machining | |
| JPS5775435A (en) | Liquid transfer molding | |
| ES2183902T3 (en) | PROCEDURE FOR THE MANUFACTURE OF COMPOSITE BATHTUBS OF VARIOUS LAYERS OF MATERIALS. | |
| JPS5770620A (en) | Injection, stretch and blow molding apparatus for plastic product | |
| JPS5496562A (en) | Low-pressure transfer molding machine | |
| JPH05245856A (en) | Method for molding foamed molded product | |
| JPS63257620A (en) | Controlling device for mold temperature |