ES2116636T3 - Procedimiento para la obtencion de piezas moldeadas de plastico celular con capas de diferente densidad. - Google Patents

Procedimiento para la obtencion de piezas moldeadas de plastico celular con capas de diferente densidad.

Info

Publication number
ES2116636T3
ES2116636T3 ES95103040T ES95103040T ES2116636T3 ES 2116636 T3 ES2116636 T3 ES 2116636T3 ES 95103040 T ES95103040 T ES 95103040T ES 95103040 T ES95103040 T ES 95103040T ES 2116636 T3 ES2116636 T3 ES 2116636T3
Authority
ES
Spain
Prior art keywords
procedure
particles
different density
layers
molded pieces
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 - Lifetime
Application number
ES95103040T
Other languages
English (en)
Inventor
Hermann Tatzel
Friedrich Domas
Jurgen Lambert
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Application granted granted Critical
Publication of ES2116636T3 publication Critical patent/ES2116636T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B29C44/08—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 using several expanding or moulding steps
    • B29C44/083—Increasing the size of the cavity after a first part has foamed, e.g. substituting one mould part with another
    • B29C44/086—Increasing the size of the cavity after a first part has foamed, e.g. substituting one mould part with another and feeding more material into the enlarged cavity

Landscapes

  • Molding Of Porous Articles (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

LA INVENCION SE REFIERE A UN PROCEDIMIENTO PARA LA ELABORACION DE PARTES MOLDEADAS DE MATERIAL ESPONJOSO CON CAPAS DE DENSIDAD DIFERENTES A BASE DE PARTICULAS DE MATERIAL ESPONJOSOPOLIOLEFINA, EN DONDE SE UTILIZA UNA HERRAMIENTA DE MOLDEADO CON UNA PARED DE MOLDE DESPLAZABLE. PRIMERO SE LLENA CON PARTICULAS A DE MATERIAL ESPONJOSO Y POR MEDIO DE INDUCCION DE VAPOR O DE AIRE CALIENTE SE SUELDAN UNAS CON OTRAS, SE DESPLAZA LA PARED DE MOLDEO MOVIL Y EL ESPACIO HUECO GENERADO SE RELLENA CON PARTICULAS B DE MATERIAL ESPONJOSO CON UNA DENSIDAD DIFERENTE A LAS PARTICULAS A Y SE SUELDAN MEDIANTE LA INDUCCION DE VAPOR O DE AIRE CALIENTE UNAS CON OTRAS, SE ENFRIAN LAS PARTES MOLDEADAS GENERADAS Y SE EXTRAEN A PARTIR DE LA HERRAMIENTA DE MOLDEO.
ES95103040T 1994-03-08 1995-03-03 Procedimiento para la obtencion de piezas moldeadas de plastico celular con capas de diferente densidad. Expired - Lifetime ES2116636T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4407628A DE4407628A1 (de) 1994-03-08 1994-03-08 Verfahren zur Herstellung von Schaumstoff-Formteilen mit Schichten unterschiedlicher Dichte

Publications (1)

Publication Number Publication Date
ES2116636T3 true ES2116636T3 (es) 1998-07-16

Family

ID=6512123

Family Applications (1)

Application Number Title Priority Date Filing Date
ES95103040T Expired - Lifetime ES2116636T3 (es) 1994-03-08 1995-03-03 Procedimiento para la obtencion de piezas moldeadas de plastico celular con capas de diferente densidad.

Country Status (4)

Country Link
EP (1) EP0671250B1 (es)
JP (1) JPH0847976A (es)
DE (2) DE4407628A1 (es)
ES (1) ES2116636T3 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120114897A1 (en) * 2010-11-05 2012-05-10 Ramesh Thiagarajan Foam Stiffened Structure and Method of Making the Same
WO2012060910A2 (en) 2010-11-05 2012-05-10 Bell Helicopter Textron Inc. Moldable fly-away tool structure system
DE202011109599U1 (de) * 2011-12-29 2012-03-14 Kurtz Gmbh Schäumvorrichtung zur Herstellung von Dämmplatten

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3405231A1 (de) * 1983-04-19 1984-10-25 Kork AG Boswil, Boswil Formkoerper, verfahren und vorrichtung zu seiner herstellung sowie verwendung desselben
DE4040908A1 (de) * 1990-12-20 1992-06-25 Basf Ag Schaumstoff-formkoerper mit verschiedenen dichtebereichen und verfahren und formwerkzeug zu ihrer herstellung

Also Published As

Publication number Publication date
DE4407628A1 (de) 1995-09-14
EP0671250A1 (de) 1995-09-13
EP0671250B1 (de) 1998-05-27
JPH0847976A (ja) 1996-02-20
DE59502295D1 (de) 1998-07-02

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