CA2085478A1 - Method of forming thermoplastic materials - Google Patents
Method of forming thermoplastic materialsInfo
- Publication number
- CA2085478A1 CA2085478A1 CA002085478A CA2085478A CA2085478A1 CA 2085478 A1 CA2085478 A1 CA 2085478A1 CA 002085478 A CA002085478 A CA 002085478A CA 2085478 A CA2085478 A CA 2085478A CA 2085478 A1 CA2085478 A1 CA 2085478A1
- Authority
- CA
- Canada
- Prior art keywords
- mould
- thermoplastic
- sheet
- model
- backing material
- 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.)
- Abandoned
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
- B29C33/56—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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
-
- 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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/28—Component parts, details or accessories; Auxiliary operations for applying pressure through the wall of an inflated bag or diaphragm
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
- B29C43/12—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using bags surrounding the moulding material or using membranes contacting the moulding material
Abstract
In a method for the manufacture of a thermoplastic product, a sheet of a thermoplastic material (3) is heated and transferred to a mould (1 and 2) in which it is formed by pressing. The mould is a model backed against a planar mould table (6) via a backing material (1).
Description
WO~ 0i76 PCT/FI91/00193 - ~o~7~
METHOD OF FORMING THERMOPLASTIC MATERIALS
TECHNICAL FIELD
The present invention relates to a method of forming products, especially prototype pieces, of thermoplastic materials.
BACKGROUND ART
Thermoplastic material, such as reinforced plastics material sheets, can be formed into products by heating it first to a softening temperature and transferring it thereafter to a mould in which it is pressed and allowed to set. The moulds are usually machined or cast metal moulds. The manufacture of prototype pieces in particular has therefore been difficult, expensive and time-consuming.
DISCLOSURE OF INVENTION
The object of this invention is to provide a method by which the manufacture of products formed of a thermoplastic material, and in particular the production of prototype pieces, is faster and less expensive than before.
According to the method of the present invention, a sheet of thermoplastic material is heated and transferred to a mould against which it is formed by pressing; and it is a characteristic feature of the invention that the mould is a model backed against a planar mould table by a backing material.
. When the present invention is employed there is no need to - produce a conventional mould. A model of the desired shape can be used as the mould. The lower surface of the model, i.e. the surface facing the mould table, need not be planar. The model can, for example, have the shape of a dish turned upside~ down and it can be made of sheet metal. According to the in~ention it is, prior to placing ... .
.~ .
WO92/00176 ~ ~P~ PCTlF191/00193 on the mould table, filled with for example polyurethane foam which gives a planar lower surface.
A material the surface of which is easy to form to a plane is suitable to be used as the backing material.
Materials of this kind are for example foamy settable substances, such as polyurethane t or casting materials, such as gypsum. Prior to placing the model on the mould table, the backing material is cast to the lower surface of the model in a way to produce a planar surface to be placed against the mould table.
According to the method of the present invention, it is possible to produce fast and with low cost~ a prototype piece with the corresponding properties, for example appearance, insulation ability, ridigity, etc., as the products manufactured with known methods. The methods allows the use of models of a large variety of shapes.
It does not cause high tool costs as the same planar mould table can be used for various shapes of models. The model can be made of different materials such as for example wood, plywood, sheet metal or a sheet of polyester. It is a prerequisite of the material of the model that it will not be deformed by the hot thermoplastic sheet.
BRIEF DESCRIPTION OF THE DRAWING
The invention will be described further, by way of example, with reference to the accompanying drawing which is a schematical sectional view illustrating manufacture of a 3G prototype piece by the method according to the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION
In the drawing, a model 2 is supported by a backing material l and placed on a mould table 6 having a planar top surface. A thoroughly soft and pliable sheet 3 of a ~hermoplastic material heated ln an oven is transferred to . _ . . _ .
:: ~.: . '', ': . ' YO9~/OI)t76 PCT/Fl9l/00193 3 2 ~ 7 ~
bell 5 is applied and presses the thermoplastic material tightly againts the mould by means of the pressure prevailing in the pressure bell. At tXe same time, air is exhausted from the region of the sheet to be formed via passages 7. When the sheet 3 has set following cooling it is removed from the mould.
A pressure of less than 0.1 MPa is in most cases adequate for the pressing. However, higher pxessures can be used, particularly if the density of the backing material is increased.
INDUSTRIAL APPLICABILITY
The present method is very well applicable in forming prototype pieces of porous sheet-like fiber-reinforced non-compressed particle-form plastics material, the fiber and plastics components of which are bound together. Naturally, it is also possible to form according to the method also, for example reinforced plastics blancs coated with textile, or blancs composed of superimposed layers, the layers having different fiber content.
. : .
METHOD OF FORMING THERMOPLASTIC MATERIALS
TECHNICAL FIELD
The present invention relates to a method of forming products, especially prototype pieces, of thermoplastic materials.
BACKGROUND ART
Thermoplastic material, such as reinforced plastics material sheets, can be formed into products by heating it first to a softening temperature and transferring it thereafter to a mould in which it is pressed and allowed to set. The moulds are usually machined or cast metal moulds. The manufacture of prototype pieces in particular has therefore been difficult, expensive and time-consuming.
DISCLOSURE OF INVENTION
The object of this invention is to provide a method by which the manufacture of products formed of a thermoplastic material, and in particular the production of prototype pieces, is faster and less expensive than before.
According to the method of the present invention, a sheet of thermoplastic material is heated and transferred to a mould against which it is formed by pressing; and it is a characteristic feature of the invention that the mould is a model backed against a planar mould table by a backing material.
. When the present invention is employed there is no need to - produce a conventional mould. A model of the desired shape can be used as the mould. The lower surface of the model, i.e. the surface facing the mould table, need not be planar. The model can, for example, have the shape of a dish turned upside~ down and it can be made of sheet metal. According to the in~ention it is, prior to placing ... .
.~ .
WO92/00176 ~ ~P~ PCTlF191/00193 on the mould table, filled with for example polyurethane foam which gives a planar lower surface.
A material the surface of which is easy to form to a plane is suitable to be used as the backing material.
Materials of this kind are for example foamy settable substances, such as polyurethane t or casting materials, such as gypsum. Prior to placing the model on the mould table, the backing material is cast to the lower surface of the model in a way to produce a planar surface to be placed against the mould table.
According to the method of the present invention, it is possible to produce fast and with low cost~ a prototype piece with the corresponding properties, for example appearance, insulation ability, ridigity, etc., as the products manufactured with known methods. The methods allows the use of models of a large variety of shapes.
It does not cause high tool costs as the same planar mould table can be used for various shapes of models. The model can be made of different materials such as for example wood, plywood, sheet metal or a sheet of polyester. It is a prerequisite of the material of the model that it will not be deformed by the hot thermoplastic sheet.
BRIEF DESCRIPTION OF THE DRAWING
The invention will be described further, by way of example, with reference to the accompanying drawing which is a schematical sectional view illustrating manufacture of a 3G prototype piece by the method according to the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION
In the drawing, a model 2 is supported by a backing material l and placed on a mould table 6 having a planar top surface. A thoroughly soft and pliable sheet 3 of a ~hermoplastic material heated ln an oven is transferred to . _ . . _ .
:: ~.: . '', ': . ' YO9~/OI)t76 PCT/Fl9l/00193 3 2 ~ 7 ~
bell 5 is applied and presses the thermoplastic material tightly againts the mould by means of the pressure prevailing in the pressure bell. At tXe same time, air is exhausted from the region of the sheet to be formed via passages 7. When the sheet 3 has set following cooling it is removed from the mould.
A pressure of less than 0.1 MPa is in most cases adequate for the pressing. However, higher pxessures can be used, particularly if the density of the backing material is increased.
INDUSTRIAL APPLICABILITY
The present method is very well applicable in forming prototype pieces of porous sheet-like fiber-reinforced non-compressed particle-form plastics material, the fiber and plastics components of which are bound together. Naturally, it is also possible to form according to the method also, for example reinforced plastics blancs coated with textile, or blancs composed of superimposed layers, the layers having different fiber content.
. : .
Claims (4)
1. A method of forming products of a thermoplastic material according to which method a thermoplastic sheet is heated and transferred to a mould in which it is formed, characterized in that the mould (2) is a model supported against a planar mould table (6) via a backing material (1).
2. A method according to claim 1, characterized in that the backing material (1) is of a foamy settable substance.
3. A method according to claim 1, characterized in that the backing material (1) is of a casting material.
4. A method according to claim 1, characterized in that the thermoplastic material (3) is a fiber-reinforced plastics material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI903324 | 1990-07-02 | ||
| FI903324A FI903324A (en) | 1990-07-02 | 1990-07-02 | FOERFARANDE FOER FORMNING AV THERMOPLASTIC AEMNEN. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2085478A1 true CA2085478A1 (en) | 1992-01-03 |
Family
ID=8530732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002085478A Abandoned CA2085478A1 (en) | 1990-07-02 | 1991-06-20 | Method of forming thermoplastic materials |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0537192A1 (en) |
| JP (1) | JPH0741663B2 (en) |
| KR (1) | KR930701278A (en) |
| CA (1) | CA2085478A1 (en) |
| FI (1) | FI903324A (en) |
| TW (1) | TW200428B (en) |
| WO (1) | WO1992000176A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9149961B2 (en) | 2011-08-30 | 2015-10-06 | Johnson Controls Technology Company | System and method for manufacturing a vehicle trim component via concurrent compression forming and injection molding |
| US10093268B2 (en) | 2012-08-27 | 2018-10-09 | Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. | Trim component for vehicle interior |
| US10464280B2 (en) | 2011-08-30 | 2019-11-05 | Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. | Trim component for vehicle interior |
| US10981532B2 (en) | 2018-06-28 | 2021-04-20 | Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. | Vehicle trim component |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015012242B4 (en) * | 2015-09-18 | 2019-06-19 | Leonhard Kurz Stiftung & Co. Kg | Method and device for producing a laminated with a laminate 3D substrate |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE754422A (en) * | 1969-08-13 | 1971-02-05 | Shell Int Research | METHOD AND DEVICE FOR FORMING OBJECTS FROM A SHEET |
| GB1319587A (en) * | 1969-10-17 | 1973-06-06 | British United Shoe Machinery | Treatment of thermoplastic sheet material |
| DE2612369A1 (en) * | 1976-03-24 | 1977-10-06 | Dynamit Nobel Ag | METHOD OF MANUFACTURING A MOLDING TOOL FROM REACTIVE RESINS WITH FILLERS AND MOLDING TOOL |
| JPS5638222A (en) * | 1979-09-07 | 1981-04-13 | Aisin Seiki Co Ltd | Preparation of ornamental member |
| JPS5743812A (en) * | 1980-06-20 | 1982-03-12 | Hashimoto Forming Co Ltd | Vacuum press adhesion apparatus |
| JPS5743811A (en) * | 1980-06-20 | 1982-03-12 | Hashimoto Forming Co Ltd | Vacuum press adhesion apparatus |
| JPS6050146B2 (en) * | 1981-01-21 | 1985-11-07 | 東レ株式会社 | Sheet for stamping molding |
| SE433321B (en) * | 1982-04-30 | 1984-05-21 | Lindskog K J E | SET FOR MANUFACTURE OF A FORMED PROPOSAL FOR THE SHAPING OF SCALFUL FORMS |
-
1990
- 1990-07-02 FI FI903324A patent/FI903324A/en not_active Application Discontinuation
-
1991
- 1991-06-20 JP JP3511651A patent/JPH0741663B2/en not_active Expired - Lifetime
- 1991-06-20 EP EP91911007A patent/EP0537192A1/en not_active Ceased
- 1991-06-20 WO PCT/FI1991/000193 patent/WO1992000176A1/en not_active Application Discontinuation
- 1991-06-20 KR KR1019920703402A patent/KR930701278A/en not_active Application Discontinuation
- 1991-06-20 CA CA002085478A patent/CA2085478A1/en not_active Abandoned
- 1991-08-15 TW TW080106468A patent/TW200428B/zh active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9149961B2 (en) | 2011-08-30 | 2015-10-06 | Johnson Controls Technology Company | System and method for manufacturing a vehicle trim component via concurrent compression forming and injection molding |
| US10118325B2 (en) | 2011-08-30 | 2018-11-06 | Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. | Vehicle trim component |
| US10464280B2 (en) | 2011-08-30 | 2019-11-05 | Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. | Trim component for vehicle interior |
| US10093268B2 (en) | 2012-08-27 | 2018-10-09 | Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. | Trim component for vehicle interior |
| US10981532B2 (en) | 2018-06-28 | 2021-04-20 | Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. | Vehicle trim component |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1992000176A1 (en) | 1992-01-09 |
| TW200428B (en) | 1993-02-21 |
| KR930701278A (en) | 1993-06-11 |
| JPH05507246A (en) | 1993-10-21 |
| FI903324A0 (en) | 1990-07-02 |
| FI903324A (en) | 1992-01-03 |
| EP0537192A1 (en) | 1993-04-21 |
| JPH0741663B2 (en) | 1995-05-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |