JPS56144145A - Preformer for extruding tread/side wall - Google Patents

Preformer for extruding tread/side wall

Info

Publication number
JPS56144145A
JPS56144145A JP4723680A JP4723680A JPS56144145A JP S56144145 A JPS56144145 A JP S56144145A JP 4723680 A JP4723680 A JP 4723680A JP 4723680 A JP4723680 A JP 4723680A JP S56144145 A JPS56144145 A JP S56144145A
Authority
JP
Japan
Prior art keywords
rubber
side wall
preformer
wall part
height
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.)
Pending
Application number
JP4723680A
Other languages
Japanese (ja)
Inventor
Masahiko Oki
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.)
Sumitomo Rubber Industries Ltd
Original Assignee
Sumitomo Rubber Industries 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 Sumitomo Rubber Industries Ltd filed Critical Sumitomo Rubber Industries Ltd
Priority to JP4723680A priority Critical patent/JPS56144145A/en
Publication of JPS56144145A publication Critical patent/JPS56144145A/en
Pending 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29L2030/00—Pneumatic or solid tyres or parts thereof
    • B29L2030/002—Treads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Tyre Moulding (AREA)

Abstract

PURPOSE:To reduce the generation of shrinkage at the side wall part and eliminate the necessity of lengthening the size of a cutting edge part by a method wherein the height of the side wall part is designed so as to be higher than the same of the tread part in a rubber introducing port for the preformer. CONSTITUTION:The rubber introducing port 14 of a plate 13 on the preformer 12 is designed so that the height SH of the side wall part is higher than the height TH of the tread part. In case rubber A, B in rubber paths 9a, 9b is fed into the preformer 12 through the rubber introducing port 14 and is extruded to a rubber extruding hole 6 from the rubber introducing hole 5 of a die plate 4, the rubber is pulled at the thin tread part, however, it is not pulled since a surplus of rubber volume exists in the side wall part and the rubber is rather contracted, therefore, it becomes wavy state and shrinkage immediately after the extrusion becomes hard to be generated readily.
JP4723680A 1980-04-09 1980-04-09 Preformer for extruding tread/side wall Pending JPS56144145A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4723680A JPS56144145A (en) 1980-04-09 1980-04-09 Preformer for extruding tread/side wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4723680A JPS56144145A (en) 1980-04-09 1980-04-09 Preformer for extruding tread/side wall

Publications (1)

Publication Number Publication Date
JPS56144145A true JPS56144145A (en) 1981-11-10

Family

ID=12769569

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4723680A Pending JPS56144145A (en) 1980-04-09 1980-04-09 Preformer for extruding tread/side wall

Country Status (1)

Country Link
JP (1) JPS56144145A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4923551A (en) * 1988-03-07 1990-05-08 The Dow Chemical Company Method for the production of composite plastic film
KR100452930B1 (en) * 2002-06-10 2004-10-14 한국타이어 주식회사 Head Mold Apparatus of Extruder Extruding Sidewall of Tire
KR100635600B1 (en) * 2004-12-07 2006-10-18 금호타이어 주식회사 Single body green sheet and Injection mold for vulcanizing green sheet tread and side in aircraft tier
JP2010228335A (en) * 2009-03-27 2010-10-14 Toyo Tire & Rubber Co Ltd Extrusion nozzle and extruder for pneumatic tire rubber member
JP2014079995A (en) * 2012-10-18 2014-05-08 Toyo Tire & Rubber Co Ltd Cap for extruder and extrusion machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4923551A (en) * 1988-03-07 1990-05-08 The Dow Chemical Company Method for the production of composite plastic film
KR100452930B1 (en) * 2002-06-10 2004-10-14 한국타이어 주식회사 Head Mold Apparatus of Extruder Extruding Sidewall of Tire
KR100635600B1 (en) * 2004-12-07 2006-10-18 금호타이어 주식회사 Single body green sheet and Injection mold for vulcanizing green sheet tread and side in aircraft tier
JP2010228335A (en) * 2009-03-27 2010-10-14 Toyo Tire & Rubber Co Ltd Extrusion nozzle and extruder for pneumatic tire rubber member
JP2014079995A (en) * 2012-10-18 2014-05-08 Toyo Tire & Rubber Co Ltd Cap for extruder and extrusion machine

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