FR2318022A1 - Utilising waste from continuously produced polyurethane foam - by recycling immediately to feed point of new mixture (BE140777) - Google Patents

Utilising waste from continuously produced polyurethane foam - by recycling immediately to feed point of new mixture (BE140777)

Info

Publication number
FR2318022A1
FR2318022A1 FR7621383A FR7621383A FR2318022A1 FR 2318022 A1 FR2318022 A1 FR 2318022A1 FR 7621383 A FR7621383 A FR 7621383A FR 7621383 A FR7621383 A FR 7621383A FR 2318022 A1 FR2318022 A1 FR 2318022A1
Authority
FR
France
Prior art keywords
foam
returned
feed point
polyurethane foam
new
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
FR7621383A
Other languages
French (fr)
Other versions
FR2318022B3 (en
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.)
SEMPIRAN PATENTVERWERT
Original Assignee
SEMPIRAN PATENTVERWERT
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 SEMPIRAN PATENTVERWERT filed Critical SEMPIRAN PATENTVERWERT
Publication of FR2318022A1 publication Critical patent/FR2318022A1/en
Application granted granted Critical
Publication of FR2318022B3 publication Critical patent/FR2318022B3/fr
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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/461—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length dispensing apparatus, e.g. dispensing foaming resin over the whole width of the moving surface
    • 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
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/30—Expanding the moulding material between endless belts or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products

Landscapes

  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)
  • Laminated Bodies (AREA)

Abstract

A method of continuously producing rigid polyurethane foam or similarly reacting substances, faced or laminated at least partly with sheet material consists of introducing the already mixed component into a moving conveyor belt. The edges of the continuously moving foam are regularly trimmed and the foam may also be transversely cut; the resultant waste material is immediately recovered and returned to the feed point of the foam mixture. The material may be granulated before it is returned. More specifically, it is granulated and extracted by a blower to be returned to the starting point. The enormous amt. of waste material is recycled for immediate re-use. In this way, it is still sufficiently unreacted to combine chemically with the new mixt. and therefore does not remain as an inert filler in the new foam.
FR7621383A 1975-07-14 1976-07-13 Utilising waste from continuously produced polyurethane foam - by recycling immediately to feed point of new mixture (BE140777) Granted FR2318022A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752531346 DE2531346A1 (en) 1975-07-14 1975-07-14 METHOD AND DEVICE FOR CONTINUOUS PRODUCTION OF A STRAND OF FOAM

Publications (2)

Publication Number Publication Date
FR2318022A1 true FR2318022A1 (en) 1977-02-11
FR2318022B3 FR2318022B3 (en) 1979-04-06

Family

ID=5951447

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7621383A Granted FR2318022A1 (en) 1975-07-14 1976-07-13 Utilising waste from continuously produced polyurethane foam - by recycling immediately to feed point of new mixture (BE140777)

Country Status (13)

Country Link
JP (1) JPS5217575A (en)
AU (1) AU1580876A (en)
BE (1) BE844113A (en)
BR (1) BR7604499A (en)
DD (1) DD125191A5 (en)
DE (1) DE2531346A1 (en)
DK (1) DK250776A (en)
FR (1) FR2318022A1 (en)
GR (1) GR60790B (en)
IT (1) IT1064897B (en)
NL (1) NL7513111A (en)
SE (1) SE7606838L (en)
ZA (1) ZA763714B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657281A1 (en) * 1993-11-29 1995-06-14 C.A. Greiner & Söhne Gesellschaft M.B.H. Laminated building element
EP1211037A1 (en) * 2000-11-30 2002-06-05 IMPIANTI OMS S.p.A. Method and apparatus for the continuous production of expanded plastic material for forming panels

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5815026U (en) * 1981-07-23 1983-01-29 日成ビルド工業株式会社 Building material manufacturing equipment
DE3806070C1 (en) * 1988-02-26 1989-09-14 Maschinenfabrik Hennecke Gmbh, 5090 Leverkusen, De Process and installation for continuously producing sandwich elements
DE19727129A1 (en) * 1997-06-26 1999-01-07 Vaw Aluform System Technik Gmb Continuous manufacture of roof- and wall board with paper, plastic or metal coatings
JP4884079B2 (en) * 2006-05-26 2012-02-22 アキレス株式会社 Insulation board
DE102007042926B4 (en) * 2007-09-08 2012-04-26 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Method for producing rubber sheets, mats or the like
IE20090936A1 (en) * 2008-12-15 2010-07-21 Kingspan Res And Dev Ltd A foam board

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657281A1 (en) * 1993-11-29 1995-06-14 C.A. Greiner & Söhne Gesellschaft M.B.H. Laminated building element
EP1211037A1 (en) * 2000-11-30 2002-06-05 IMPIANTI OMS S.p.A. Method and apparatus for the continuous production of expanded plastic material for forming panels
US6955779B2 (en) 2000-11-30 2005-10-18 Impianti Oms S.P.A. Method for the continuous production of expanded plastic material for forming panels and the like, and apparatus for carrying out the method

Also Published As

Publication number Publication date
DD125191A5 (en) 1977-04-06
DE2531346A1 (en) 1977-01-20
SE7606838L (en) 1977-01-15
AU1580876A (en) 1978-01-12
DK250776A (en) 1977-01-15
NL7513111A (en) 1977-01-18
JPS5217575A (en) 1977-02-09
BR7604499A (en) 1977-08-02
BE844113A (en) 1977-01-14
IT1064897B (en) 1985-02-25
FR2318022B3 (en) 1979-04-06
ZA763714B (en) 1977-05-25
GR60790B (en) 1978-08-30

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Legal Events

Date Code Title Description
ST Notification of lapse