ES2172843T3 - Procedimiento para fabricar piezas moldeadas de biopolimeros. - Google Patents

Procedimiento para fabricar piezas moldeadas de biopolimeros.

Info

Publication number
ES2172843T3
ES2172843T3 ES98114875T ES98114875T ES2172843T3 ES 2172843 T3 ES2172843 T3 ES 2172843T3 ES 98114875 T ES98114875 T ES 98114875T ES 98114875 T ES98114875 T ES 98114875T ES 2172843 T3 ES2172843 T3 ES 2172843T3
Authority
ES
Spain
Prior art keywords
mold
injection
mass
procedure
biopolymers
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
ES98114875T
Other languages
English (en)
Inventor
Friedrich Priehs
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of ES2172843T3 publication Critical patent/ES2172843T3/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
    • B29C44/34—Auxiliary operations
    • B29C44/58—Moulds
    • B29C44/588—Moulds with means for venting, e.g. releasing foaming gas
    • 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
    • B29C44/3402—Details of processes or apparatus for reducing environmental damage or for working-up compositions comprising inert blowing agents or biodegradable components

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Toxicology (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

LA INVENCION TRATA DE UN PROCEDIMIENTO ASI COMO UN MOLDE PARA FABRICAR PIEZAS DE MOLDEO DE BIOPOLIMEROS. PARA PODER FABRICAR CUERPOS DE MOLDEO DE ELEVADA CALIDAD, SE PROPONEN DE ACUERDO CON LA INVENCION LAS SIGUIENTES ETAPAS DE PROCEDIMIENTO: A) LOS MATERIALES DE PARTIDA SE ESPESAN Y PLASTIFICAN MEDIANTE APORTACION DE ENERGIA TERMICA Y MECANICA EN UN AGREGADO DE INYECCION; B) EL MOLDE ANTES DE LLENARLO CON LA PIEZA SE LLENA CON UN GAS A UNA PRESION, QUE CORRESPONDE APROXIMADAMENTE A LA PRESION EN LA MASA PLASTIFICADA EN EL AGREGADO DE INYECCION; C) LA MASA PLASTIFICADA SE INYECTARA LO MAS RAPIDAMENTE POSIBLE EN EL MOLDE CON UNA VELOCIDAD DE INYECCION, QUE GARANTICE UN LLENADO LO MAS POSIBLEMENTE REGULAR CON LA MASA QUE NO SE HA EXPANDIDO TODAVIA; D) DURANTE O JUSTO DESPUES DEL PROCESO DE INYECCION SE VACIA DE AIRE EL ESPACIO INTERNO DEL MOLDE EN IMPACTOS, PARA POSIBILITAR LA EXPANSION FINAL DEL POLIMERO INYECTADO Y PARA ACABAR ENTONCES EL PROCESO DE ESPUMACION.
ES98114875T 1997-08-08 1998-08-07 Procedimiento para fabricar piezas moldeadas de biopolimeros. Expired - Lifetime ES2172843T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19734300A DE19734300A1 (de) 1997-08-08 1997-08-08 Verfahren und Form zum Herstellen von Formteilen aus Biopolymeren

Publications (1)

Publication Number Publication Date
ES2172843T3 true ES2172843T3 (es) 2002-10-01

Family

ID=7838331

Family Applications (1)

Application Number Title Priority Date Filing Date
ES98114875T Expired - Lifetime ES2172843T3 (es) 1997-08-08 1998-08-07 Procedimiento para fabricar piezas moldeadas de biopolimeros.

Country Status (3)

Country Link
EP (1) EP0895847B1 (es)
DE (2) DE19734300A1 (es)
ES (1) ES2172843T3 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9669569B2 (en) 2004-05-12 2017-06-06 Proprietect L.P. Vented mold and method for producing molded article

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20019949U1 (de) 2000-11-24 2001-06-13 Fa. Heinrich Schönhage Kunststoffverarbeitung, 32760 Detmold Verbindungselement
NL1021601C2 (nl) * 2002-10-08 2004-04-13 Vertis Bv Inrichting en werkwijze voor het vormen van producten uit massa met natuurlijke mono- of polymeren.
DE102004033719A1 (de) * 2004-07-13 2006-02-16 Uvex Arbeitsschutz Gmbh Gehörschutzstöpsel
DE102008035530A1 (de) * 2008-07-29 2010-02-04 Volkswagen Ag Verfahren zur Herstellung eines Biopolymer-Formteils und nach dem Verfahren hergestelltes Formteil

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2328701A1 (de) * 1973-06-06 1975-01-02 Einhart Dipl Ing Maass Verfahren zur herstellung poroeser spritzgussteile aus kunststoff
FR2345283A2 (fr) * 1975-10-27 1977-10-21 Arnaud Guy Corps en resine expansee et son procede de fabrication
FR2433407A1 (fr) * 1978-08-14 1980-03-14 Asahi Dow Ltd Produit mousse et procede pour le mouler par injection
DE3420195A1 (de) * 1984-05-30 1985-12-12 Friedrich 2807 Achim Priehs Verfahren zum herstellen von daemmaterial aus altpapier und/oder pappe
JPS6172511A (ja) * 1984-09-17 1986-04-14 N B C Kogyo Kk 射出発泡成形用金型のキヤビテイ−内の空気排出構造
FR2602996B1 (fr) * 1986-08-19 1989-02-17 Jaeger Procede de fabrication d'une piece moulee de faible densite et piece ainsi realisee, notamment un flotteur pour circuit d'hydrocarbures de vehicule automobile
US5660900A (en) * 1992-08-11 1997-08-26 E. Khashoggi Industries Inorganically filled, starch-bound compositions for manufacturing containers and other articles having a thermodynamically controlled cellular matrix
US5602188A (en) * 1993-07-13 1997-02-11 Suzuki Sogyo Co., Ltd. Biodegradable resin foam and method and apparatus for producing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9669569B2 (en) 2004-05-12 2017-06-06 Proprietect L.P. Vented mold and method for producing molded article

Also Published As

Publication number Publication date
DE19734300A1 (de) 1999-02-11
EP0895847B1 (de) 2002-02-06
EP0895847A2 (de) 1999-02-10
DE59802998D1 (de) 2002-03-21
EP0895847A3 (de) 1999-07-07

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