JPH0393120U - - Google Patents

Info

Publication number
JPH0393120U
JPH0393120U JP1990000975U JP97590U JPH0393120U JP H0393120 U JPH0393120 U JP H0393120U JP 1990000975 U JP1990000975 U JP 1990000975U JP 97590 U JP97590 U JP 97590U JP H0393120 U JPH0393120 U JP H0393120U
Authority
JP
Japan
Prior art keywords
zone
cylinder
plastic
pressure reduction
extrusion
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
JP1990000975U
Other languages
English (en)
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 filed Critical
Priority to JP1990000975U priority Critical patent/JPH0393120U/ja
Publication of JPH0393120U publication Critical patent/JPH0393120U/ja
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
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk

Landscapes

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

Description

【図面の簡単な説明】
第１図は本考案の一実施例を示す縦断面図、第
２図は従来の押出機を示す縦断面図である。 １……シリンダー、２……ホツパー、３，８…
…押出スクリユー、３ａ，８ａ……供給ゾーン、
３ｂ，８ｂ……圧縮ゾーン、３ｃ，８ｃ……計量
ゾーン、８ｄ……減圧ゾーン、４……添加物の注
入口、５……クロスヘツド、６……導体、７……
架橋管。

Claims (1)

    【実用新案登録請求の範囲】
  1. シリンダーと、シリンダー内に設けられプラス
    チツクの供給ゾーン、圧縮ゾーン及び計量ゾーン
    を有する押出スクリユーと、シリンダーの途中に
    設けられた添加剤の注入口とを備えたプラスチツ
    ク押出機において、前記押出スクリユーの圧縮ゾ
    ーン乃至計量ゾーンの途中に一時的にスクリユー
    溝深さを大きくした減圧ゾーンを形成し、シリン
    ダーの該減圧ゾーンに対応した位置に、前記添加
    剤の注入口を設けたことを特徴とするプラスチツ
    ク押出機。
JP1990000975U 1990-01-10 1990-01-10 Pending JPH0393120U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990000975U JPH0393120U (ja) 1990-01-10 1990-01-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990000975U JPH0393120U (ja) 1990-01-10 1990-01-10

Publications (1)

Publication Number Publication Date
JPH0393120U true JPH0393120U (ja) 1991-09-24

Family

ID=31504910

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990000975U Pending JPH0393120U (ja) 1990-01-10 1990-01-10

Country Status (1)

Country Link
JP (1) JPH0393120U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006289636A (ja) * 2005-04-06 2006-10-26 Japan Steel Works Ltd:The 熱可塑性樹脂あるいはその混合物からなる発泡成形品の製造方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5732659A (en) * 1980-08-05 1982-02-22 Mitsubishi Electric Corp Semiconductor device
JPS6442817A (en) * 1987-08-10 1989-02-15 Sumitomo Electric Industries Formation of mask pattern

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5732659A (en) * 1980-08-05 1982-02-22 Mitsubishi Electric Corp Semiconductor device
JPS6442817A (en) * 1987-08-10 1989-02-15 Sumitomo Electric Industries Formation of mask pattern

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006289636A (ja) * 2005-04-06 2006-10-26 Japan Steel Works Ltd:The 熱可塑性樹脂あるいはその混合物からなる発泡成形品の製造方法
JP4550646B2 (ja) * 2005-04-06 2010-09-22 株式会社日本製鋼所 熱可塑性樹脂あるいはその混合物からなる発泡成形品の製造方法

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