DE2259431A1 - Moulding reinforced polyester - with mould having high expansion coefft to ease removal - Google Patents
Moulding reinforced polyester - with mould having high expansion coefft to ease removalInfo
- Publication number
- DE2259431A1 DE2259431A1 DE19722259431 DE2259431A DE2259431A1 DE 2259431 A1 DE2259431 A1 DE 2259431A1 DE 19722259431 DE19722259431 DE 19722259431 DE 2259431 A DE2259431 A DE 2259431A DE 2259431 A1 DE2259431 A1 DE 2259431A1
- Authority
- DE
- Germany
- Prior art keywords
- mould
- medium
- mold
- shape
- gfp
- 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
- 238000000465 moulding Methods 0.000 title abstract description 3
- 229920000728 polyester Polymers 0.000 title abstract 2
- 238000003475 lamination Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052782 aluminium Inorganic materials 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 241000379547 Trifolium medium Species 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 3
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0003—Discharging moulded articles from the mould
-
- 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
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2905/00—Use of metals, their alloys or their compounds, as mould material
- B29K2905/02—Aluminium
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Verfahren und Vorrichtung zur Herstellung von GFP-Formteilen Die Erfindung betrifft ein Verfahren zur Herstellung von GFP-Formteilen mittels Positiv- oder Negativfor men sowie eine Vorrichtung zur Durchführung des Verfahrens.Method and device for the production of GFP molded parts The invention relates to a process for the production of GFP molded parts by means of positive or Negativfor men and a device for carrying out the method.
Zum Laminierten von GEP-Formteilen sind Formen aus Holz, Metall oder Plastwerkstoffen bekannt. Diese Positiv- oder Negativformen müssen konisch gearbeitet sein, um das Werkstück ohne Beschädigung aus der Form nehmen zu können. Darüberhinaus werden die Formen vor dem Laminieren mit Trennmitteln behandelt, um eine Verbindung zwischen Harz und Form zu vermeidenç In Fällen, in denen es nicht möglich ist, dem GEPw Teil eine konische Form zu geben, müssen kostspielige mehrteilige bzw. aufklappbare Formen verwendet werden, damit das fertige GFP-Teil ohne Schwierigkeiten entnommen werden kann.Molds made of wood, metal or Plastic materials known. These positive or negative forms must be made conical so that the workpiece can be removed from the mold without damaging it. Furthermore the molds are treated with release agents prior to lamination to create a bond between resin and mold ç In cases where it is not possible to avoid the To give GEPw part a conical shape, expensive multi-part or hinged ones have to be used Molds are used to allow the finished GFP part to be removed without difficulty can be.
Diese Schwierigkeiten können umgangen werden, wenn mit Wachsmodellen gearbeitet wird, auf die das GFP-Teil auflaminiert wird. Durch den exothermen Vorgang des AusharF tens wird die Wachsform ausgeschmolzen. Der Nachteil des Verfahrens besteht darin, daß das Wachsmodell verloren geht. Bei großen Stückzahlen entstehen dadurch hohe gosten für die Herstellung der Wachsmodelle.These difficulties can be circumvented when using wax models is worked, on which the GFP part is laminated. Due to the exothermic process the wax mold is melted out during hardening. The disadvantage of the procedure is that the wax model is lost. When there are large numbers of items therefore high costs for the production of the wax models.
Zweck der Erfindung ist es, das Herausnehmen des fertigen GFP-Teiles aus der Form zu vereinfachen und Beschädigungen, sowohl des GyP'Eeiles, als auch der Form beim Herauslösen zu vermeiden.The purpose of the invention is to remove the finished GFP part to simplify out of the form and damage, both of the GyP'Eeiles, as well as to avoid the shape when detaching.
Der Erfindung liegt die hitfgabe zugrunde, ein Verfahren und eine Vorrichtung zur Herstellung von GFP-Formteilen zu schaffen, mit deren Hilfe ein einfaches Entfernen der GFP-Bormteile aus der Form möglich ist.The invention is based on the hitfgabe, a method and a To create a device for the production of GFP molded parts, with the help of which a easy removal of the GFP molded parts from the mold is possible.
Erfindungsgemäß besteht die Form, welche als Negativ-oder Positivform ausgebildet sein kann, aus einem Werkstoff mit einem hohen Wärmeausdehnungskoeffizienten.According to the invention, there is a shape which is a negative or positive shape can be formed from a material with a high coefficient of thermal expansion.
Eine Positivform, d.h. eine Form, die dem Formteil auf seiner Innenseite die Form gibt, wird während des Laminiervorganges vorzugsweise mittels eines Mediums erwärmt und nach dem Ausharten des Harzes vorzugsweise mittels eines Mediums gekühlt.A positive shape, i.e. a shape that fits the molded part on its inside gives the shape, is preferably by means of a medium during the lamination process heated and, after the resin has hardened, preferably cooled by means of a medium.
In gleicher Weise wird eine Negativform, d.h. eine Form, die das GFP-Formteii auf seiner Außenseite umschließt, während des Laminisrvorgages gekuhlt und nach dem Aushärten des Harzes erwärmt.In the same way, a negative mold, i.e. a mold that contains the GFP molding encloses on its outside, cooled during the Laminisrvorgages and after the hardening of the resin is heated.
Als Vorrichtung zur Durchfuhrung des Verfahrens dient eine Form, die aus einem Werkstoff mit einem gegenüber Kunstharz sehr viel gröBeren Wärmeausdehnungskoeffizienten besteht.A form is used as the device for carrying out the method, which made of a material with a much higher coefficient of thermal expansion than synthetic resin consists.
Als Werkstoff für die Herstellung der Formen kommen vorzugsweise Alinniniu;m bzw. Aluminiumlegierungen zur inwendung. Die Form kann Hohlräume bzw. Kanäle aufweisen, in denen das Medium zirkulieren kann.Alinniniu; m are preferably used as the material for the production of the molds or aluminum alloys for use. The shape can have cavities or channels, in which the medium can circulate.
Die Vorteile der Erfindung bestehen in dem Verzicht auf die bisher technologisch bedingte konische Form aller GFP-Teile. Damit kanal eine Erweiterung des Anwendungsge bietes von GEP-Teilen erreicht werden. Weiterhin ist die Behandlung der Formen vor dem Laminieren mit Trennmitteln nicht mehr erforderlich. Eine Beschädigung der Formen bzw.The advantages of the invention consist in the waiver of the previous Technologically conditioned conical shape of all GFP parts. This is an extension of the channel the area of application of GEP parts can be achieved. Treatment continues of the molds before lamination with release agents is no longer necessary. Damage of the forms resp.
Formteile wird durch die Erfindung vermieden.Molded parts are avoided by the invention.
Die Erfindung soll nachstehend an einem Ausführungsbeispiel näher erläutert werden. In der zugehörigen Zeichnung zeigen t Fig. 1 Die schematische Darstellung einer Positivform im Schnitt Fig. 2 Die schematische Darstellung einer Negativform im Schnitt Die Positiv- bzw. Negativform besteht aus dem Formkörper 2, der einen Hohlraum 3 für das Medium aufweist.The invention is to be described in more detail below using an exemplary embodiment explained. In the accompanying drawing, t Fig. 1 The schematic representation of a positive form in section FIG. 2 the schematic representation a negative form in section The positive or negative form consists of the molded body 2, which has a cavity 3 for the medium.
Auf bzw. in den Formkörper 2 wird das GFP-Formteil 1 auf- bzw. einlaminiert.The GFP molded part 1 is laminated onto or into the molded body 2.
Claims (5)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD16089572A DD95679A1 (en) | 1972-02-16 | 1972-02-16 | METHOD AND DEVICE FOR PRODUCING GFP FORM PARTS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2259431A1 true DE2259431A1 (en) | 1973-08-23 |
Family
ID=5485338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19722259431 Pending DE2259431A1 (en) | 1972-02-16 | 1972-12-05 | Moulding reinforced polyester - with mould having high expansion coefft to ease removal |
Country Status (2)
| Country | Link |
|---|---|
| DD (1) | DD95679A1 (en) |
| DE (1) | DE2259431A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0588660A1 (en) * | 1992-09-18 | 1994-03-23 | JOHNSON & JOHNSON VISION PRODUCTS, INC. | Laser assisted demolding of ophthalmic lenses |
-
1972
- 1972-02-16 DD DD16089572A patent/DD95679A1/en unknown
- 1972-12-05 DE DE19722259431 patent/DE2259431A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0588660A1 (en) * | 1992-09-18 | 1994-03-23 | JOHNSON & JOHNSON VISION PRODUCTS, INC. | Laser assisted demolding of ophthalmic lenses |
Also Published As
| Publication number | Publication date |
|---|---|
| DD95679A1 (en) | 1973-02-12 |
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