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ES475522A2 - Temp. controlled conveyor tunnel for producing polyurethane foam - with temp. distribution profiles adjustable to suit different reactivities - Google Patents

Temp. controlled conveyor tunnel for producing polyurethane foam - with temp. distribution profiles adjustable to suit different reactivities

Info

Publication number
ES475522A2
ES475522A2 ES475522A ES475522A ES475522A2 ES 475522 A2 ES475522 A2 ES 475522A2 ES 475522 A ES475522 A ES 475522A ES 475522 A ES475522 A ES 475522A ES 475522 A2 ES475522 A2 ES 475522A2
Authority
ES
Spain
Prior art keywords
temp
foam
belt
tunnel
polyurethane foam
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
Application number
ES475522A
Other languages
Spanish (es)
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.)
TECFOAM SA
Original Assignee
TECFOAM SA
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 TECFOAM SA filed Critical TECFOAM SA
Priority to ES475522A priority Critical patent/ES475522A2/en
Priority to AU43626/79A priority patent/AU526058B2/en
Priority to IT4778579A priority patent/IT1192667B/en
Priority to NL7901006A priority patent/NL7901006A/en
Priority to CA321,321A priority patent/CA1126923A/en
Priority to FR7903632A priority patent/FR2442712A2/en
Priority to SE7901265A priority patent/SE435696B/en
Priority to DE19792905856 priority patent/DE2905856A1/en
Priority to GB7910820A priority patent/GB2030505B/en
Priority to US06/066,839 priority patent/US4275024A/en
Publication of ES475522A2 publication Critical patent/ES475522A2/en
Expired 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
    • B29C44/20—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
    • B29C44/28—Expanding the moulding material on continuous moving surfaces without restricting the upwards growth of the foam

Landscapes

  • Drying Of Solid Materials (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

Appts. for making polyurethane foam involves a conveyor belt on which he foam forming mix is carried, on a moving paper liner, through a tunnel provided with ducts and baffles to control flows of hot air above and below the belt transverse to the belt motion. The rate of air throughput and heat input and the effective length of the foam generation zone and the curing zones in the tunnel can be adapted to suit the reactivity of the foam reagents used. Esp. suitable for mfr. of continuous crust-free polyurethane foam blocks. The lower part of the tunnel controls the temps across and along the belt supporting the foam, including preconditioning of the return leg of the belt. Linked flow input splitting and outlet throttle valves keep the flow patterns dynamically stable during flow pattern alterations made automatically.
ES475522A 1976-05-24 1978-11-29 Temp. controlled conveyor tunnel for producing polyurethane foam - with temp. distribution profiles adjustable to suit different reactivities Expired ES475522A2 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
ES475522A ES475522A2 (en) 1978-11-29 1978-11-29 Temp. controlled conveyor tunnel for producing polyurethane foam - with temp. distribution profiles adjustable to suit different reactivities
AU43626/79A AU526058B2 (en) 1978-02-14 1979-01-24 Installation for obtaining continuous blocks of polyurethane
IT4778579A IT1192667B (en) 1978-02-14 1979-01-26 Temp. controlled conveyor tunnel for producing polyurethane foam - with temp. distribution profiles adjustable to suit different reactivities
NL7901006A NL7901006A (en) 1978-02-14 1979-02-08 INSTALLATION FOR OBTAINING CONTINUOUS BLOCKS OF POLYURETHANE FOAM WITHOUT A COMPACT UNDERLAY.
CA321,321A CA1126923A (en) 1978-02-14 1979-02-12 Installation for obtaining continuous blocks of polyurethane foam
FR7903632A FR2442712A2 (en) 1978-11-29 1979-02-13 Temp. controlled conveyor tunnel for producing polyurethane foam - with temp. distribution profiles adjustable to suit different reactivities
SE7901265A SE435696B (en) 1978-11-29 1979-02-13 PLANT FOR PRODUCING CONTINUOUS BLOCKS OF POLYURETAN FOAM WITHOUT "CRUSH"
DE19792905856 DE2905856A1 (en) 1978-11-29 1979-02-15 PLANT FOR THE PRODUCTION OF CONTINUOUS POLYURETHANE FOAM BLOCKS
GB7910820A GB2030505B (en) 1978-09-28 1979-03-28 Installations for obtaining continuous blocks of polyurethane
US06/066,839 US4275024A (en) 1976-05-24 1979-08-15 Process and apparatus for elimination of densified areas in blocks of pliable polyurethane foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES475522A ES475522A2 (en) 1978-11-29 1978-11-29 Temp. controlled conveyor tunnel for producing polyurethane foam - with temp. distribution profiles adjustable to suit different reactivities

Publications (1)

Publication Number Publication Date
ES475522A2 true ES475522A2 (en) 1979-08-16

Family

ID=8477191

Family Applications (1)

Application Number Title Priority Date Filing Date
ES475522A Expired ES475522A2 (en) 1976-05-24 1978-11-29 Temp. controlled conveyor tunnel for producing polyurethane foam - with temp. distribution profiles adjustable to suit different reactivities

Country Status (4)

Country Link
DE (1) DE2905856A1 (en)
ES (1) ES475522A2 (en)
FR (1) FR2442712A2 (en)
SE (1) SE435696B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011037443A3 (en) * 2009-09-25 2011-11-24 Concreto W, S.A. De C.V. Equipment for metering out and applying foamed polyurethane in three-dimensional prefabricated-panel metal structures

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR2023011369A1 (en) * 2023-09-13 2025-03-21 Safas Saf Plastik Sanayi Ve Ticaret Anonim Sirketi A BIOABSORBABLE FLEXIBLE POLYURETHANE FOAM FORMULATION AND PRODUCTION METHOD

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704040A (en) * 1955-03-15 warrington
US2235476A (en) * 1940-06-19 1941-03-18 Petersen Oven Co Commercial baking oven
US2397726A (en) * 1943-04-14 1946-04-02 Petersen Oven Co Baking oven
ES448190A1 (en) * 1976-05-24 1977-08-01 Roday Espumaciones Ind Manufacture of polyurethane foam blocks with reduced compacting of peripheral portions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011037443A3 (en) * 2009-09-25 2011-11-24 Concreto W, S.A. De C.V. Equipment for metering out and applying foamed polyurethane in three-dimensional prefabricated-panel metal structures

Also Published As

Publication number Publication date
FR2442712A2 (en) 1980-06-27
DE2905856C2 (en) 1987-06-25
SE435696B (en) 1984-10-15
SE7901265L (en) 1980-05-30
DE2905856A1 (en) 1980-06-12
FR2442712B2 (en) 1984-07-13

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