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ES2005460A6 - Process for preparing polyurethane foams having zones of differing hardness - Google Patents

Process for preparing polyurethane foams having zones of differing hardness

Info

Publication number
ES2005460A6
ES2005460A6 ES8703315A ES8703315A ES2005460A6 ES 2005460 A6 ES2005460 A6 ES 2005460A6 ES 8703315 A ES8703315 A ES 8703315A ES 8703315 A ES8703315 A ES 8703315A ES 2005460 A6 ES2005460 A6 ES 2005460A6
Authority
ES
Spain
Prior art keywords
foam
introducing
hard
foam formulation
formulation
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
ES8703315A
Other languages
Spanish (es)
Inventor
Werner August Lidy
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.)
BP Chemicals Ltd
Original Assignee
BP Chemicals Ltd
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 BP Chemicals Ltd filed Critical BP Chemicals Ltd
Publication of ES2005460A6 publication Critical patent/ES2005460A6/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
    • B29C44/02—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
    • B29C44/04—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 consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/0461—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 consisting of at least two parts of chemically or physically different materials, e.g. having different densities by having different chemical compositions in different places, e.g. having different concentrations of foaming agent, feeding one composition after the other
    • B29C44/0476—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 consisting of at least two parts of chemically or physically different materials, e.g. having different densities by having different chemical compositions in different places, e.g. having different concentrations of foaming agent, feeding one composition after the other by pouring more than one composition into an open mould
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/18—Seat parts having foamed material included in cushioning part
    • 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
    • B29C44/04—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 consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/0461—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 consisting of at least two parts of chemically or physically different materials, e.g. having different densities by having different chemical compositions in different places, e.g. having different concentrations of foaming agent, feeding one composition after the other
    • 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
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • 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
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/58—Upholstery or cushions, e.g. vehicle upholstery or interior padding

Landscapes

  • Polyurethanes Or Polyureas (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Seats For Vehicles (AREA)
  • Laminated Bodies (AREA)

Abstract

A process for preparing polyurethane foam articles of the type comprising a central support area and two side rolls, said central support area comprising layers of firm foam and soft foam and said side rolls comprising zones of firm foam encapsulated by a soft foam, by introducing two or more polyurethane foam formulations into a mould corresponding to the shape of said article comprises: (1) introducing a soft foam formulation into the side roll parts of the mould and allowing it to rise, (2) introducing a hard foam formulation into the central support part of the mould and allowing it to rise, (3) introducing a hard foam formulation into the rising soft foam formulation in the side roll parts of the mould when the soft foam formulation has expanded between 100% and 1400% of its original Volume, so that the hard foam formulation is encapsulated by the soft foam, (4) introducing a soft foam formulation into the rising hard foam formulation in the central support part when the hard foam formulation has risen between 10 and 80% of its potential rise under conditions where the soft foam for mulation passes through the hard. The articles may be the seat or back portions of automobile seats.
ES8703315A 1986-11-20 1987-11-20 Process for preparing polyurethane foams having zones of differing hardness Expired ES2005460A6 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB868627815A GB8627815D0 (en) 1986-11-20 1986-11-20 Preparing polyurethane foams

Publications (1)

Publication Number Publication Date
ES2005460A6 true ES2005460A6 (en) 1989-03-01

Family

ID=10607679

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8703315A Expired ES2005460A6 (en) 1986-11-20 1987-11-20 Process for preparing polyurethane foams having zones of differing hardness

Country Status (11)

Country Link
JP (1) JPH0189111U (en)
AU (1) AU589821B2 (en)
BE (1) BE1001195A3 (en)
DE (1) DE3739249A1 (en)
ES (1) ES2005460A6 (en)
FR (1) FR2607061B1 (en)
GB (2) GB8627815D0 (en)
IT (1) IT1223361B (en)
NL (1) NL8702764A (en)
NZ (1) NZ222564A (en)
PT (1) PT86177A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013102777A1 (en) * 2012-01-05 2013-07-11 Escobar Uribe Andres Anatomical padding system with multi-level layers

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07106167B2 (en) * 1986-12-01 1995-11-15 株式会社ブリヂストン Cushion
US5106548A (en) * 1988-05-26 1992-04-21 Ikeda Bussan Co., Ltd. Method of producing skin-covered pad for seat
GB8825984D0 (en) * 1988-11-07 1988-12-14 Medesign Ltd Therapeutic pillow
GB8827280D0 (en) * 1988-11-22 1988-12-29 Bp Chem Int Ltd Process for making polyurethane foam
US5000515A (en) * 1989-02-14 1991-03-19 Hoover Universal, Inc. Variable density foam vehicle seat
GB8906297D0 (en) * 1989-03-18 1989-05-04 Bp Chem Int Ltd Process for preparing multihardness foam articles
US5400490A (en) * 1993-02-26 1995-03-28 Woodbridge Foam Corporation Method of molding a seat having anchoring means connected thereto
DE10205028C1 (en) * 2002-02-07 2003-08-14 Krauss Maffei Kunststofftech Manufacture of moldings made up of at least two sections of foam with different rigidity uses single female mold with male mold and then with female mold, protective sheet being incorporated into molding
JP5308152B2 (en) * 2006-03-31 2013-10-09 テイ・エス テック株式会社 Cushion body manufacturing method and seat seat manufacturing method
ES2384353B1 (en) * 2009-06-23 2013-06-10 Asociacion De Investigación Centro Tecnológico Del Mueble Y La Madera De La Región De Murcia PROCEDURE FOR OBTAINING RESIN FOAMS.
US10602847B2 (en) 2012-08-23 2020-03-31 Lear Corporation Thoracic region comfort seating system
CN104602569A (en) 2012-08-23 2015-05-06 李尔公司 Chest area comfort seating system
NO338505B1 (en) * 2014-09-05 2016-08-29 Torgersen Hans & Soenn Child safety seat
AT519381A2 (en) * 2016-11-24 2018-06-15 Fill Gmbh Process for producing a shaped body
CN114248673B (en) * 2020-09-24 2024-10-15 博泽西德科(上海)汽车系统有限公司 Automobile seat with gradient hardness distribution of foaming materials and manufacturing method thereof

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3161436A (en) * 1962-03-27 1964-12-15 Davidson Rubber Company Inc Pre-stressed molded foam cushioning element
FR1403374A (en) * 1964-07-25 1965-06-18 Dunlop Sa Reinforced foam molded articles
DE7729578U1 (en) * 1977-09-23 1978-01-12 Metzeler Schaum Gmbh, 8940 Memmingen FOAM PAD FOR VEHICLE SEATS
US4190697A (en) * 1979-01-15 1980-02-26 Milsco Manufacturing Company Multidensity foam article and method of preparation
CA1194660A (en) * 1981-06-27 1985-10-08 Rudolf J. Tenhagen Process for making polyurethane foam
US4405681A (en) * 1983-01-20 1983-09-20 Milsco Manufacturing Company Foam article and method of preparation
DE3327724A1 (en) * 1983-08-01 1985-02-14 Dunlop Ag, 6450 Hanau METHOD AND DEVICE FOR PRODUCING UPHOLSTERY BODIES FROM MOLDED FOAM
IT1181506B (en) * 1984-01-31 1987-09-30 Clerprem Srl PROCEDURE FOR THE REALIZATION OF A CUSHION FOR SEAT OR VEHICLE BACKREST OR SIMILAR IN DOUBLE LAYER OF FOAM, WITH DIFFERENT CHARACTERISTICS AND CUSHION OBTAINED WITH SUCH CHARACTERISTICS
FR2562882B1 (en) * 1984-04-16 1989-11-17 Nhk Spring Co Ltd SEAT PADDING AND MANUFACTURING METHOD THEREOF
GB2161375A (en) * 1984-07-09 1986-01-15 Milsco Mfg Co Composite foam-seat cushion and method of preparation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013102777A1 (en) * 2012-01-05 2013-07-11 Escobar Uribe Andres Anatomical padding system with multi-level layers

Also Published As

Publication number Publication date
NZ222564A (en) 1990-09-26
FR2607061A1 (en) 1988-05-27
DE3739249A1 (en) 1988-05-26
IT1223361B (en) 1990-09-19
PT86177A (en) 1988-12-15
IT8722704A0 (en) 1987-11-19
GB8726372D0 (en) 1987-12-16
JPH0189111U (en) 1989-06-13
NL8702764A (en) 1988-06-16
GB2197659A (en) 1988-05-25
AU8135787A (en) 1988-05-26
BE1001195A3 (en) 1989-08-16
AU589821B2 (en) 1989-10-19
GB2197659B (en) 1990-01-10
FR2607061B1 (en) 1990-04-20
GB8627815D0 (en) 1986-12-17

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Legal Events

Date Code Title Description
SA6 Expiration date (snapshot 920101)

Free format text: 2007-11-20

FD1A Patent lapsed

Effective date: 19931122