IT1255887B - Procedimento di stampaggio e relativa apparecchiatura per la realizzazione di manufatti toroidali in materiale elastomerico espansoa bassa densita' e a celle chiuse. - Google Patents

Procedimento di stampaggio e relativa apparecchiatura per la realizzazione di manufatti toroidali in materiale elastomerico espansoa bassa densita' e a celle chiuse.

Info

Publication number
IT1255887B
IT1255887B ITMI922391A ITMI922391A IT1255887B IT 1255887 B IT1255887 B IT 1255887B IT MI922391 A ITMI922391 A IT MI922391A IT MI922391 A ITMI922391 A IT MI922391A IT 1255887 B IT1255887 B IT 1255887B
Authority
IT
Italy
Prior art keywords
semi
finished product
toroid
manufactures
pressure
Prior art date
Application number
ITMI922391A
Other languages
English (en)
Inventor
Alessandro Volpi
Original Assignee
Pirelli
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 Pirelli filed Critical Pirelli
Priority to ITMI922391A priority Critical patent/IT1255887B/it
Publication of ITMI922391A0 publication Critical patent/ITMI922391A0/it
Priority to ES93116680T priority patent/ES2115704T3/es
Priority to EP93116680A priority patent/EP0594072B1/en
Priority to DE69318097T priority patent/DE69318097T2/de
Priority to US08/138,211 priority patent/US5417898A/en
Priority to BR9304031A priority patent/BR9304031A/pt
Publication of ITMI922391A1 publication Critical patent/ITMI922391A1/it
Priority to US08/381,155 priority patent/US5614225A/en
Application granted granted Critical
Publication of IT1255887B publication Critical patent/IT1255887B/it

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
    • 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
    • B29C44/10—Applying counter-pressure during expanding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/04—Resilient fillings for rubber tyres; Filling tyres therewith

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Un semilavorato toroidale (5) in materiale elastomerico crudo viene semivulcanizzato in una camera di semivulcanizzazione (4) definita fra due semistampi (2, 3) reciprocamente accostati. Nello stampo (1a) viene creata una pressione uguale alla pressione esercitata dai gas che si sviluppano nel semilavorato (5). I semistampi (2, 3) vengono allontanati e la pressione nello stampo viene gradualmente ridotta, determinando l'espansione ed il conseguente trasferimento del semilavorato (5) dalla camera di semivulcanizzazione (4) ad una circostante camera di vulcanizzazione finale (6). Quando il diametro interno del semilavorato (5) risulta maggiore del diametro interno della camera di vulcanizzazione finale (6), quest'ultima viene chiusa in corrispondenza del suo bordo perimetrale interno nonché, previo eventuale incremento della pressione nello stampo, in corrispondenza del suo bordo circonferenziale esterno, per racchiudere integralmente il semilavorato ed ultimare il processo di vulcanizzazione.
ITMI922391A 1992-10-19 1992-10-19 Procedimento di stampaggio e relativa apparecchiatura per la realizzazione di manufatti toroidali in materiale elastomerico espansoa bassa densita' e a celle chiuse. IT1255887B (it)

Priority Applications (7)

Application Number Priority Date Filing Date Title
ITMI922391A IT1255887B (it) 1992-10-19 1992-10-19 Procedimento di stampaggio e relativa apparecchiatura per la realizzazione di manufatti toroidali in materiale elastomerico espansoa bassa densita' e a celle chiuse.
ES93116680T ES2115704T3 (es) 1992-10-19 1993-10-15 Proceso de moldeo para confeccionar articulos toroidales manufacturados a partir de un material elastomerico expandido de celdas cerradas y baja densidad, y aparato asociado.
EP93116680A EP0594072B1 (en) 1992-10-19 1993-10-15 Moulding process for making toroidal manufactured articles from closed-cell, low-density, expanded elastomeric material, and related apparatus
DE69318097T DE69318097T2 (de) 1992-10-19 1993-10-15 Formungsverfahren zur Herstellung von torischen Gegenständen aus einem elastomeren, geschäumten, geschlossenzelligen Werkstoff niedriger Dichte und Vorrichtung dafür
US08/138,211 US5417898A (en) 1992-10-19 1993-10-19 Molding process for making toroidal manufactured articles from closed-cell, low-density, expanded elastomeric material
BR9304031A BR9304031A (pt) 1992-10-19 1993-10-19 Processo de moldagem e respectivo equipamento para a realiyaçao de manufaturados toroidais de material elastomérico expandido com baixa densidade e com células fechadas
US08/381,155 US5614225A (en) 1992-10-19 1995-01-31 Molding apparatus for making toroidal manufactured articles from closed-cell, low-density, expanded elastomeric material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI922391A IT1255887B (it) 1992-10-19 1992-10-19 Procedimento di stampaggio e relativa apparecchiatura per la realizzazione di manufatti toroidali in materiale elastomerico espansoa bassa densita' e a celle chiuse.

Publications (3)

Publication Number Publication Date
ITMI922391A0 ITMI922391A0 (it) 1992-10-19
ITMI922391A1 ITMI922391A1 (it) 1994-04-19
IT1255887B true IT1255887B (it) 1995-11-17

Family

ID=11364133

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI922391A IT1255887B (it) 1992-10-19 1992-10-19 Procedimento di stampaggio e relativa apparecchiatura per la realizzazione di manufatti toroidali in materiale elastomerico espansoa bassa densita' e a celle chiuse.

Country Status (6)

Country Link
US (2) US5417898A (it)
EP (1) EP0594072B1 (it)
BR (1) BR9304031A (it)
DE (1) DE69318097T2 (it)
ES (1) ES2115704T3 (it)
IT (1) IT1255887B (it)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2758505B1 (fr) * 1997-01-23 1999-04-09 Cera Procede pour la realisation d'un appui-tete annulaire
GB2328638B (en) * 1997-08-28 1999-09-22 Sun Own Ind Co Ltd Method for making a surfboard
US5985188A (en) * 1998-06-09 1999-11-16 Aero Components, Inc. Method for manufacturing a chair having separate moldable parts
ATE302676T1 (de) 2000-05-19 2005-09-15 Michelin Soc Tech Verfahren und vorrichtung zur vernetzung und schäumen von notlaufstützkörper für fahrzeugreifen und damit hergestellte körper
US6348167B1 (en) * 2000-06-12 2002-02-19 Sun Own Industrial Co., Ltd. Method of making a surfboard
JP4589566B2 (ja) 2001-06-01 2010-12-01 株式会社ブリヂストン タイヤ用発泡チューブを成型するためのモールド及びタイヤ用発泡チューブの製造方法
US8246872B2 (en) * 2008-12-22 2012-08-21 The Gates Corporation Method for making composite article with expandable elastomer in compression
GB2526632B (en) * 2014-06-24 2016-04-13 Gecko Rubber Ltd Improvements in and relating to expanded rubber articles
US9945439B2 (en) * 2015-01-16 2018-04-17 Dayco Ip Holdings, Llc Elastomer strip design for torsional vibration dampers and torsional vibration dampers having same
US9943146B2 (en) * 2015-05-27 2018-04-17 Qalo Llc Compression molded silicone ring
EP3727819B1 (en) * 2017-12-21 2022-03-16 Pirelli Tyre S.p.A. Process and apparatus for manufacturing a mousse for vehicle wheels
US12290999B2 (en) * 2023-01-11 2025-05-06 The Goodyear Tire & Rubber Company Molding method for tire production

Family Cites Families (21)

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Publication number Priority date Publication date Assignee Title
US2271498A (en) * 1941-04-08 1942-01-27 Salta Corp Method for making closed-cell cellular hard rubber and product of the method
US2525965A (en) * 1948-01-30 1950-10-17 Us Rubber Co Molding method
US2893058A (en) * 1955-06-24 1959-07-07 Federal Mogul Bower Bearings Seal ring
FR1344241A (fr) * 1962-04-18 1963-11-29 Procédé pour l'obtention de matériaux alvéolaires souples ou rigides à cellules non communicantes, installation pour la mise en oeuvre du présent procédé, et les articles conformes à ceux obtenus par ledit procédé ou procédé similaire
DE1694163A1 (de) * 1966-09-28 1970-09-03 Furukawa Electric Co Ltd Verfahren zur Herstellung eines Polyolefinmischschaumstoffs
FR95799E (fr) * 1967-11-13 1971-06-25 Michelin & Cie Manufacture Fra Perfectionnements aux enveloppes de pneumatiques.
US3605848A (en) * 1968-12-23 1971-09-20 Inter Polymer Res Corp Microcellular urethane elastomers of relatively low density
US4060578A (en) * 1973-10-30 1977-11-29 Kisbany Frederick N Method of foam-filling a tire carcass
US4208368A (en) * 1978-07-18 1980-06-17 Gebruder Buhler Ag Method and apparatus for injection molding foamed plastic articles using a pre-pressurized mold having fixed core members with controlled venting
FR2467092A1 (fr) * 1979-10-11 1981-04-17 Hutchinson Mapa Perfectionnements apportes aux procedes de fabrication de chambres du type dit increvable pour roues de vehicules et analogues, et chambres increvables ainsi obtenues
NL8001681A (nl) * 1980-03-21 1981-10-16 Koorevaar Arie Werkwijze en inrichting voor het vormen van een band voor een wielvelg.
US4352854A (en) * 1980-03-28 1982-10-05 Phillips Petroleum Company Molded sponge-like thermoplastic elastomer articles having thin, dense skins and a process for their production
JPS5816839A (ja) * 1981-07-24 1983-01-31 Sumitomo Rubber Ind Ltd エラストマ−物品の加硫方法
US4588542A (en) * 1981-05-04 1986-05-13 G. P. Plastics, Inc. Bicycle wheel assembly
JPS6169421A (ja) * 1984-09-14 1986-04-10 Asahi Chem Ind Co Ltd 発泡成形体の成形方法
JPS6294314A (ja) * 1985-10-21 1987-04-30 Nok Corp パツキンの製造方法およびその成形型
US4909972A (en) * 1985-12-02 1990-03-20 Britz Johannes H Method and apparatus for making a solid foamed tire core
US4783292A (en) * 1987-06-15 1988-11-08 Rogers Roy K Method of injection molding a foamed plastic article using a relatively light gas as a blowing agent
EP0438874A3 (en) * 1989-12-05 1992-06-10 Tonen Chemical Corporation Method of producing thick, integral cross-linked foam of thermoplastic polyolefin
JPH0661766B2 (ja) * 1989-12-28 1994-08-17 住友ゴム工業株式会社 エラストマー物品の加硫方法
KR950014772B1 (ko) * 1991-12-16 1995-12-14 가부시끼가이샤 고오베 세이꼬오쇼 타이어 가황기 및 타이어 성형방법

Also Published As

Publication number Publication date
BR9304031A (pt) 1994-04-26
DE69318097D1 (de) 1998-05-28
ITMI922391A0 (it) 1992-10-19
US5614225A (en) 1997-03-25
US5417898A (en) 1995-05-23
DE69318097T2 (de) 1998-10-29
EP0594072B1 (en) 1998-04-22
EP0594072A1 (en) 1994-04-27
ES2115704T3 (es) 1998-07-01
ITMI922391A1 (it) 1994-04-19

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971029