DE1094385B - Process for the production of plastic foams - Google Patents

Process for the production of plastic foams

Info

Publication number
DE1094385B
DE1094385B DEV14920A DEV0014920A DE1094385B DE 1094385 B DE1094385 B DE 1094385B DE V14920 A DEV14920 A DE V14920A DE V0014920 A DEV0014920 A DE V0014920A DE 1094385 B DE1094385 B DE 1094385B
Authority
DE
Germany
Prior art keywords
production
plastic foams
plastic
expanded
high frequency
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
Application number
DEV14920A
Other languages
German (de)
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.)
EMIL VOGEL GES MIT Beschrankter
Original Assignee
EMIL VOGEL GES MIT Beschrankter
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 EMIL VOGEL GES MIT Beschrankter filed Critical EMIL VOGEL GES MIT Beschrankter
Priority to DEV14920A priority Critical patent/DE1094385B/en
Publication of DE1094385B publication Critical patent/DE1094385B/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • 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
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • 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
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Description

Verfahren zur Herstellung von Kunststoffschäumen Die Schäumung von Kunststoffen wird bisher chemisch oder thermisch durch direkte oder indirekte Zuführung von Dampf oder durch Erhitzung von außen bewirkt. Gegebenenfalls werden den Stücken aus Kunststoffschaum nachträglich resistente Oberflächen gegeben.Process for the production of plastic foams The foaming of Plastics are so far chemically or thermally through direct or indirect supply caused by steam or by external heating. If necessary, the pieces Resistant surfaces are subsequently given from plastic foam.

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Kunststoffschäumen aus vorgeschäumten oder nicht vorgeschäumten ungesättigten Polyesterharzen, Epoxyharzen, Polyvenylchlorid, Polyäthylenen und Kunststoffemulsionen aller Art. Erfindungsgemäß erfolgt die Herstellung in einfacherer Weise als bisher dadurch, daß durch Erwärmung im Hochfrequenzfeld Treibmittel expandieren und sich dadurch Schaum bildet, der gegebenenfalls mit Verstärkungs- und/oder Begrenzungseinlagen eine Verbindung eingeht. Die Einwirkung der Hochfrequenz kann durch Einwirkung von Infrarotstrahlung gestei-- gert werden. The present invention relates to a method of manufacture of plastic foams made from pre-expanded or non-pre-expanded unsaturated Polyester resins, epoxy resins, polyvinyl chloride, polyethylenes and plastic emulsions of all kinds. According to the invention, the production takes place in a simpler manner than before due to the fact that blowing agents expand and become by heating in the high-frequency field as a result, foam forms, which optionally with reinforcing and / or limiting inserts enters into a connection. The effect of the high frequency can be caused by the action of Infrared radiation can be increased.

PATENTANSPRtJCHE: 1. Verfahren zur Herstellung von Kunststoffschäumen aus vorgeschäumten oder nicht vorgeschäumen ungesättigten Polyesterharzen, Epoxyharzen, Polyvenylchlorid, Polyäthylenen und Kunststoffemulsionen aller Art, dadurch gekennzeichnet, daß durch Erwärmung im Hochfrequenzfeld Treibmittel expandieren, sich dadurch Schaum bildet, der gegebenenfalls mit Verstärkungs- und/ oder Begrenzungseinlagen eine Verbindung eingeht. PATENT CLAIMS: 1. Process for the production of plastic foams made of pre-expanded or non-pre-expanded unsaturated polyester resins, epoxy resins, Polyvinyl chloride, polyethylenes and plastic emulsions of all kinds, characterized that when heated in the high-frequency field, blowing agents expand, causing foam forms, which optionally with reinforcing and / or limiting inserts a Connection is received.

Claims (1)

2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zusätzlich zur Hochfrequenzeinwirkung Infrarotstrahlen zur Wirkung gebracht werden. 2. The method according to claim 1, characterized in that in addition infrared rays are brought into effect for high frequency exposure. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 858 744, 881 849; britische Patentschriften Nr. 567 380, 588 609; schweizerische Patentschrift Nr. 260 146. Considered publications: German Patent Specifications No. 858 744, 881 849; British Patent Nos. 567 380, 588 609; Swiss U.S. Patent No. 260 146.
DEV14920A 1958-08-22 1958-08-22 Process for the production of plastic foams Pending DE1094385B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV14920A DE1094385B (en) 1958-08-22 1958-08-22 Process for the production of plastic foams

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV14920A DE1094385B (en) 1958-08-22 1958-08-22 Process for the production of plastic foams

Publications (1)

Publication Number Publication Date
DE1094385B true DE1094385B (en) 1960-12-08

Family

ID=7574783

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV14920A Pending DE1094385B (en) 1958-08-22 1958-08-22 Process for the production of plastic foams

Country Status (1)

Country Link
DE (1) DE1094385B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122944A1 (en) * 1983-03-28 1984-10-31 Bayer Ag Process for preparing polyolefin foams

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB567380A (en) * 1943-04-30 1945-02-12 Bruno Jablonsky Improved method of controlling the heat produced by a high frequency electric field in a bonded fibrous material
GB588609A (en) * 1943-05-21 1947-05-29 Induction Heating Corp Improvements in and relating to methods of indirectly heating non-conductive materials by electromagnetic induction
CH260146A (en) * 1941-08-18 1949-02-28 Limited Arc Manufacturing Co Method for joining workpieces made of thermoplastics.
DE858744C (en) * 1950-11-01 1952-12-08 Siemens Ag Procedure for heating goods in a high-frequency field
DE881849C (en) * 1944-10-27 1953-07-02 Siemens Ag Method for gluing or gluing of goods, e.g. B. wood, in the high-frequency electric field

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH260146A (en) * 1941-08-18 1949-02-28 Limited Arc Manufacturing Co Method for joining workpieces made of thermoplastics.
GB567380A (en) * 1943-04-30 1945-02-12 Bruno Jablonsky Improved method of controlling the heat produced by a high frequency electric field in a bonded fibrous material
GB588609A (en) * 1943-05-21 1947-05-29 Induction Heating Corp Improvements in and relating to methods of indirectly heating non-conductive materials by electromagnetic induction
DE881849C (en) * 1944-10-27 1953-07-02 Siemens Ag Method for gluing or gluing of goods, e.g. B. wood, in the high-frequency electric field
DE858744C (en) * 1950-11-01 1952-12-08 Siemens Ag Procedure for heating goods in a high-frequency field

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122944A1 (en) * 1983-03-28 1984-10-31 Bayer Ag Process for preparing polyolefin foams

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