DE839715C - Hardening of synthetic resin laminate workpieces - Google Patents
Hardening of synthetic resin laminate workpiecesInfo
- Publication number
- DE839715C DE839715C DENDAT839715D DE839715DA DE839715C DE 839715 C DE839715 C DE 839715C DE NDAT839715 D DENDAT839715 D DE NDAT839715D DE 839715D A DE839715D A DE 839715DA DE 839715 C DE839715 C DE 839715C
- Authority
- DE
- Germany
- Prior art keywords
- hardening
- heat
- synthetic resin
- resin laminate
- outside
- 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
- 229920003002 synthetic resin Polymers 0.000 title claims description 3
- 239000000057 synthetic resin Substances 0.000 title claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
(WlGBL S. 175)(WlGBL p. 175)
AUSGEGEBEN AM 23. MAI 1952ISSUED MAY 23, 1952
A 4703 XII/ 39 aA 4703 XII / 39 a
Hans Cropp, IngolstadtHans Cropp, Ingolstadt
ist als Erfinder genannt wordenhas been named as the inventor
Auto-Union G.m.b.H., IngolstadtAuto-Union G.m.b.H., Ingolstadt
Patentanmeldung bekanntgemacht am 27. September 1951Patent application published September 27, 1951
Patenterteilung bekanntgemacht am 10. April 1952Patent issued April 10, 1952
Das Erwärmen der Gesenke für Schichtpreßstoffe macht im allgemeinen recht erhebliche Schwierigkeiten, wenn es darauf ankommt, mit kurzen Taktzeiten in der Fließfertigung auszukommen, da die Werkstücke zum Aushärten bis zu 15 Minuten Zeit benötigen. Die Verkürzung dieser Zeit ist bei der Wärmezufuhr von außen nur schwer möglich, da die Abgabe von Wärme an das Werkstück von der Wärmespeicherfähigkeit des Werkzeuges und der Möglichkeit der Wärmenachfuhr abhängt. Die Temperatur darf auch nicht über die Härtetemperatur ansteigen, so daß sich auf dem Wege der Wärmezufuhr von außen die Aushärtezeit schwer verkürzen läßt.The heating of the dies for laminates generally causes considerable difficulties, when it comes down to short cycle times in flow production, because the Workpieces require up to 15 minutes to harden. The shortening of this time is with the Heat can only be supplied with difficulty from the outside, since heat is released from the workpiece to the workpiece Heat storage capacity of the tool and the possibility of heat supply depends. the Temperature must not rise above the hardening temperature, so that on the way of External heat supply makes the curing time difficult to shorten.
Ks ist bekannt, Kunstharzrohlinge dielektrisch außerhalb des Werkzeugs vorzuwärmen, die Rohlinge dann in das eigentliche Werkzeug einzubringen und unter weiterer Wärmezufuhr von außen fertig zu pressen.It is known to dielectrically preheat synthetic resin blanks outside of the tool, the blanks then to be introduced into the actual tool and finished with additional heat input from the outside to press.
Eine kürzere Aushärtezeit als bei der Ofen- oder ao Preßhärtung wird auch durch das bekannte Verfahren durch Härtung im Hoc'hfrequenzfeld erzielt.A shorter curing time than with oven or ao press curing is also achieved by the known method achieved by hardening in a high frequency field.
Die Erfindung bedient sich der gleichzeitigen Anwendung beider Verfahren, und zwar durch Wärmezufuhr von außen und durch Erwärmen von as innen heraus mit dielektrischer Wärme.The invention makes use of the simultaneous use of both methods, namely by Heat supply from the outside and by heating from the inside out with dielectric heat.
Auf diese Weise wird die Aushärtezeit ganz wesentlich herabgesetzt, da die nun gleichzeitig von innen und außen wirkende Wärme das Werkstück gleichsam schlagartig auf die gewünschte Temperatur bringt.In this way, the curing time is reduced quite significantly, since the now at the same time of The heat acting inside and outside brings the workpiece to the desired temperature all of a sudden brings.
Nach einer weiteren Ausbildung des Verfahrens wird bei besonders schwierigen Stücken das Werkstück im Werkzeug durch Wärmezufuhr von außenAfter a further development of the method, the workpiece is used for particularly difficult pieces in the tool through the supply of heat from the outside
vorgetrocknet, ehe die dielektrische Wärme zusätzlich angewendet wird.pre-dried before the dielectric heat in addition is applied.
Claims (2)
Publications (1)
Publication Number | Publication Date |
---|---|
DE839715C true DE839715C (en) | 1952-04-10 |
Family
ID=579752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT839715D Expired DE839715C (en) | Hardening of synthetic resin laminate workpieces |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE839715C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1143998B (en) * | 1955-04-12 | 1963-02-21 | Chemetron Corp | Method and device for solidifying plasticized, ungelled vinyl resin foam by heating using high frequency |
-
0
- DE DENDAT839715D patent/DE839715C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1143998B (en) * | 1955-04-12 | 1963-02-21 | Chemetron Corp | Method and device for solidifying plasticized, ungelled vinyl resin foam by heating using high frequency |
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