DE2251900B2 - Process for the production of a molding tool for the production of articles from foamed plastic - Google Patents

Process for the production of a molding tool for the production of articles from foamed plastic

Info

Publication number
DE2251900B2
DE2251900B2 DE19722251900 DE2251900A DE2251900B2 DE 2251900 B2 DE2251900 B2 DE 2251900B2 DE 19722251900 DE19722251900 DE 19722251900 DE 2251900 A DE2251900 A DE 2251900A DE 2251900 B2 DE2251900 B2 DE 2251900B2
Authority
DE
Germany
Prior art keywords
production
foamed plastic
molding tool
articles
mask
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
Application number
DE19722251900
Other languages
German (de)
Other versions
DE2251900A1 (en
Inventor
Auf Nichtnennung Antrag
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PAMPUS VERMOEGENSVERWALTUNGS-KG 4156 WILLICH DE
Original Assignee
PAMPUS KG 4156 WILLICH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by PAMPUS KG 4156 WILLICH filed Critical PAMPUS KG 4156 WILLICH
Priority to DE19722251900 priority Critical patent/DE2251900B2/en
Priority to IT2115373A priority patent/IT981092B/en
Priority to CH466873A priority patent/CH556725A/en
Priority to NL7304562A priority patent/NL7304562A/xx
Priority to FR7313120A priority patent/FR2186335B1/fr
Priority to SE7305941A priority patent/SE392419B/en
Priority to GB2453773A priority patent/GB1420986A/en
Priority to BR384073A priority patent/BR7303840D0/en
Priority to JP6018973A priority patent/JPS4950066A/ja
Publication of DE2251900A1 publication Critical patent/DE2251900A1/en
Publication of DE2251900B2 publication Critical patent/DE2251900B2/en
Granted legal-status Critical Current

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
    • B29C33/60—Releasing, lubricating or separating agents
    • B29C33/62—Releasing, lubricating or separating agents based on polymers or oligomers
    • 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
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • 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
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts

Description

Die vorliegende Erfindung bezieht sich auf ein Verfahren zum Herstellen eines Fomwerkzeuges für die Herstellung von Gegenständen aus geschäumtem Kunststoff, bestehend aus einem Grundkörper aus Metall und einer dickwandigen Formmaske aus Polytetrafluoräthylen.The present invention relates to a method of manufacturing a forming tool for the production of objects made of foamed plastic, consisting of a base body Metal and a thick-walled molded mask made of polytetrafluoroethylene.

Formen mit einem Grundkorper aus Metall und einer Formmaske aus Polytetrafluoräthylen sind bekannt aus der FR-PS 15 70617. Die Formmaske wird dabei durch Sintern hergestellt und ist mit dem Grundkörper fest verbunden, also nicht auswechselbar. Molds with a base body made of metal and a molded mask made of polytetrafluoroethylene are known from FR-PS 15 70617. The molded mask is made by sintering and is with the Base body firmly connected, so not exchangeable.

Da die Formmaske sich beim Gebrauch der Form abnutzt, muß die Formmaske von Zeit zu Zeit ausgebrannt und vollständig durch Sintern wiederhergestellt werden. Dieses Verfahren ist aufwendig und hat zudem den Nachteil, daß die durch Sintern erzielte Oberflächengüte meist zu wünschen übrig läßt, insbesondere dann, wenn auf der dem Werkstoff zugekehrten Maskenseite feinste Riffelungen oder Narbungen erzeugt werden sollen.Since the molding mask wears out as the mold is used, the molding mask needs to be used from time to time burned out and completely restored by sintering. This procedure is complex and also has the disadvantage that the surface quality achieved by sintering usually leaves something to be desired leaves, especially if the finest corrugations on the mask side facing the material or grains are to be produced.

Die Aufgabe der Erfindung besteht deshalb darin,The object of the invention is therefore to

ίο die Herstellung von Formmasken zu vereinfachen und die Maskenoberfläche zu verdichten, damit eine besonders gute Oberflächenqualität der herzustellenden Kunststoffteile erzielbar istίο to simplify the manufacture of shaped masks and to densify the mask surface so that the surface quality to be produced is particularly good Plastic parts is achievable

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die durch Sintern vorgefertigte Formmaske mit einem polierten Werkzeug in erwärmtem Zustand durch Prägen in die endgültige Form gebracht wird.According to the invention, this object is achieved by that the pre-sintered molded mask with a polished tool in a heated state is brought into the final shape by embossing.

Die Prägung ähnelt dem beim Verarbeiten vonThe embossing is similar to that when processing

Thermoplasten angewendeten »Schlagpressen«, bei welchem ein erhitzter Rohling in einer Presse mit hoher Kolbengeschwindigkeit und großer Druckkraft fertiggeformt wird, und sie erfolgt in an sich bekannter Weise bei einer Temperatur, die erheblich über der Gebrauchstemperatur der Formmaske, aber unterThermoplastics used »impact presses«, in which a heated blank in a press with high piston speed and high pressure force is finished, and it takes place in a known manner Way at a temperature that is significantly above the use temperature of the preformed mask, but below

as dem "Umwandlungspunkt (327° C) des Polytetrafluoräthylsns, liegt.as the "transition point (327 ° C) of polytetrafluoroethylene, lies.

Auf diese Weise ist die Herstellung beliebig vieler vielfach benutzbarer und auch auswechselbarer Formmasken in wirtschaftlicher Weise möglich.In this way, any number of multiply usable and also interchangeable can be produced Form masks possible in an economical manner.

Claims (1)

Patentanspruch:Claim: Verfahren zum Herstellen eines Formwerkzeuges für die Herstellung von Gegenständen aus geschäumtem KunststoS, bestehend aus einem Grundkorper aus Metall und einer dickwandigen Formmaske aus Polytetrafluorethylen, dadurch gekennzeichnet, daß die durch Sintern vorgefertigte Formmaske mit einem polierten Werkzeug in erwärmtem Zustand durch Prägen in die endgültige Form gebracht wird.Method for producing a molding tool for the production of objects foamed plastic, consisting of a base body made of metal and a thick-walled one Molded mask made of polytetrafluoroethylene, characterized in that the through Sinter the prefabricated molded mask with a polished tool in a heated state Embossing is brought into the final form.
DE19722251900 1972-05-30 1972-10-23 Process for the production of a molding tool for the production of articles from foamed plastic Granted DE2251900B2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DE19722251900 DE2251900B2 (en) 1972-10-23 1972-10-23 Process for the production of a molding tool for the production of articles from foamed plastic
IT2115373A IT981092B (en) 1972-05-30 1973-03-02 MOLD FOR SYNTHETIC RESIN FOAM CONSISTING OF A METAL WITH A SHELL SHAPE
CH466873A CH556725A (en) 1972-05-30 1973-04-01 PLASTIC FOAM MOLD MADE OF METAL WITH A MOLDING MASK.
NL7304562A NL7304562A (en) 1972-05-30 1973-04-02
FR7313120A FR2186335B1 (en) 1972-05-30 1973-04-11
SE7305941A SE392419B (en) 1972-05-30 1973-04-27 PLASTIC FOAM FOAM MOLD WITH A MOLD MASK
GB2453773A GB1420986A (en) 1972-05-30 1973-05-23 Mould for moulding foamed plastics
BR384073A BR7303840D0 (en) 1972-05-30 1973-05-24 MOLD FOR PLASTIC FOAM
JP6018973A JPS4950066A (en) 1972-05-30 1973-05-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722251900 DE2251900B2 (en) 1972-10-23 1972-10-23 Process for the production of a molding tool for the production of articles from foamed plastic

Publications (2)

Publication Number Publication Date
DE2251900A1 DE2251900A1 (en) 1974-05-09
DE2251900B2 true DE2251900B2 (en) 1975-09-25

Family

ID=5859805

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19722251900 Granted DE2251900B2 (en) 1972-05-30 1972-10-23 Process for the production of a molding tool for the production of articles from foamed plastic

Country Status (1)

Country Link
DE (1) DE2251900B2 (en)

Also Published As

Publication number Publication date
DE2251900A1 (en) 1974-05-09

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
EF Willingness to grant licences
8327 Change in the person/name/address of the patent owner

Owner name: PAMPUS VERMOEGENSVERWALTUNGS-KG, 4156 WILLICH, DE

8339 Ceased/non-payment of the annual fee