JPH10231961A - 合成樹脂ブロー成形ホース - Google Patents

合成樹脂ブロー成形ホース

Info

Publication number
JPH10231961A
JPH10231961A JP9050900A JP5090097A JPH10231961A JP H10231961 A JPH10231961 A JP H10231961A JP 9050900 A JP9050900 A JP 9050900A JP 5090097 A JP5090097 A JP 5090097A JP H10231961 A JPH10231961 A JP H10231961A
Authority
JP
Japan
Prior art keywords
layer
resin
resin layer
synthetic resin
soft
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
JP9050900A
Other languages
English (en)
Inventor
Masaaki Ogawa
正明 小川
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.)
Tigers Polymer Corp
Original Assignee
Tigers Polymer Corp
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 Tigers Polymer Corp filed Critical Tigers Polymer Corp
Priority to JP9050900A priority Critical patent/JPH10231961A/ja
Priority to US09/025,340 priority patent/US6214268B1/en
Publication of JPH10231961A publication Critical patent/JPH10231961A/ja
Priority to US09/651,318 priority patent/US6537630B1/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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/337—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location
    • B29C48/338—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location using a die with concentric parts, e.g. rings, cylinders
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B29C49/04102—Extrusion blow-moulding extruding the material continuously
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B29C49/0411—Means for defining the wall or layer thickness
    • B29C49/04114—Means for defining the wall or layer thickness for keeping constant thickness
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3004—Preforms or parisons made of several components having longitudinally different components within one layer, e.g. tubes with longitudinal stratified layering
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3006—Preforms or parisons made of several components having tangentially different components within one layer, e.g. longitudinal stripes
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B29C49/041—Extrusion blow-moulding using an accumulator head
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
    • Y10T428/1393—Multilayer [continuous layer]

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

(57)【要約】 【課題】 屈曲可能な軟質部は厚さ比率
を高くした軟質樹脂層に厚さ比率は低いとはいえ硬質樹
脂層が積層されているため、軟質樹脂の柔軟性が硬質樹
脂の存在により悪影響を受け阻害される結果となり、金
属管等の他物との嵌合特性を劣化する。 【解決手段】 軟質樹脂と硬質樹脂が複合さ
れた一本の多層パリソンをブロー成形してなるホース
を、軟質樹脂層または硬質樹脂層のいずれか一方により
形成される単層部と、軟質樹脂層と硬質樹脂層が積層さ
れた複層部とで構成し、この複層部は単層部を形成する
樹脂層が他の樹脂層より薄肉に形成されている。

Description

【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、例えば自動車エン
ジンの吸気系のダクトとして用いられる合成樹脂ブロー
成形ホースに関するものである。
【０００２】
【従来の技術】この種の合成樹脂製ブロー成形ホースと
しては、特開平８−１４４４５号公報に記載されたブロ
ー成形管がある。
【０００３】
【発明が解決しようとする課題】前記従来のものにおい
ては、軟質合成樹脂層と硬質合成樹脂層からなる積層構
造のパリソンからブロー成形し、軟質合成樹脂層と硬質
合成樹脂層の厚さの比率を部分的に変更して、屈曲可能
な軟質部と形状を保持する剛性部を長さ方向に交互に形
成するものである。
【０００４】しかしながら、屈曲可能な軟質部を例えば
ダクト端部の他物とのジョイント部において形成した場
合、厚さ比率を高くした軟質樹脂層に厚さ比率は低いと
はいえ硬質樹脂層が積層されているため、軟質樹脂の柔
軟性が硬質樹脂の存在により悪影響を受け阻害される結
果となり、金属管等の他物との嵌合特性を劣化する問題
があった。
【０００５】
【課題を解決するための手段】本発明は、上記の課題を
解決するために、下記の構成を有するものである。
【０００６】（１）軟質樹脂と硬質樹脂が複合された一
本の多層パリソンをブロー成形してなるホースであっ
て、軟質樹脂層または硬質樹脂層のいずれか一方により
形成される単層部と、軟質樹脂層と硬質樹脂層が積層さ
れた複層部とを有し、この複層部は単層部を形成する樹
脂層が他の樹脂層より薄肉に形成されていることを特徴
とする合成樹脂ブロー成形ホース。
【０００７】（２）単層部が軟質樹脂層により形成され
るとともにこの単層部がホース端部の連結部を構成して
いる上記（１）に記載の合成樹脂ブロー成形ホース。
【０００８】本発明においては、例えば軟質樹脂層のみ
からなる単層部を備えているので硬質樹脂の悪影響を受
けることなく、ホースの屈曲部となる蛇腹部やホ−ス端
部の連結部を単層部として、柔軟性に富んだ蛇腹部や連
結部が形成できる。
【０００９】また、本発明は基本的に多層パリソンから
形成されているので、従来より公知の多層ブロー成形機
を使用して成形でき、基本的に単層のパリソンを形成す
るために必要とされる例えば特開平５−２４５９１２号
公報に記載されたシャットオフバルブ等の樹脂の完全切
替機構といった複雑な装置を必要としない。
【００１０】
【実施例】図１は本発明の一実施例を示す合成樹脂ブロ
ー成形ホース１の一部断面正面図であり、軟質合成樹脂
層２（例えばＬＤＰＥ樹脂や熱可塑性エラストマー（Ｔ
ＰＥ））のみからなる単層部３と硬質合成樹脂層４（例
えばＨＤＰＥ樹脂やポリプロピレン（ＰＰ））と軟質合
成樹脂層２が積層された複層部５がホースの長さ方向に
沿って交互に一体に連接された単一の多層パリソンがブ
ロー成形されたもので、複層部５においては硬質合成樹
脂層４の厚さの比率を軟質合成樹脂層２より高く形成し
てある。
【００１１】本発明では、上記実施例に限らず、単層部
を蛇腹構造としたり、端部の他物との連結部に形成して
もよいほか、ホースを３次元的に屈曲させた形状に形成
してもよい。また、上記実施例とは逆に、単層部を硬質
合成樹脂層のみで形成し、かつ、複層部において軟質合
成樹脂層の厚さの比率を硬質合成樹脂層より高く形成し
た構造のホースとしてもよい。
【００１２】
【発明の効果】本発明によれば、多層パリソンから一体
成形されたブロー成形ホースでありながら、屈曲柔軟性
を有する部分と剛性の高い保形補強作用をする部分とを
両立させて形成することができ、ホース両端の連結部に
おいて、十分なシール性を確保することもできるもので
ある。
【図面の簡単な説明】
【図１】本発明の実施例を示す一部断面正面図である。
【符号の説明】
１ ホース ２ 軟質合成樹脂層 ３ 単層部 ４ 硬質合成樹脂層 ５ 複層部

Claims (2)

    【特許請求の範囲】
  1. 【請求項１】 軟質樹脂と硬質樹脂が複合された一本の
    多層パリソンをブロー成形してなるホースであって、軟
    質樹脂層または硬質樹脂層のいずれか一方により形成さ
    れる単層部と、軟質樹脂層と硬質樹脂層が積層された複
    層部とを有し、この複層部は単層部を形成する樹脂層が
    他の樹脂層より薄肉に形成されていることを特徴とする
    合成樹脂ブロー成形ホース。
  2. 【請求項２】 単層部が軟質樹脂層により形成されると
    ともにこの単層部がホース端部の連結部を構成している
    請求項１に記載の合成樹脂ブロー成形ホース。
JP9050900A 1997-02-18 1997-02-18 合成樹脂ブロー成形ホース Pending JPH10231961A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP9050900A JPH10231961A (ja) 1997-02-18 1997-02-18 合成樹脂ブロー成形ホース
US09/025,340 US6214268B1 (en) 1997-02-18 1998-02-18 Blow-molded hoses and apparatuses for producing the same
US09/651,318 US6537630B1 (en) 1997-02-18 2000-08-31 Bow-molded hoses and apparatuses for producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9050900A JPH10231961A (ja) 1997-02-18 1997-02-18 合成樹脂ブロー成形ホース

Publications (1)

Publication Number Publication Date
JPH10231961A true JPH10231961A (ja) 1998-09-02

Family

ID=12871633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9050900A Pending JPH10231961A (ja) 1997-02-18 1997-02-18 合成樹脂ブロー成形ホース

Country Status (2)

Country Link
US (2) US6214268B1 (ja)
JP (1) JPH10231961A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6537630B1 (en) 1997-02-18 2003-03-25 Tigers Polymer Corporation Bow-molded hoses and apparatuses for producing the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10237051A1 (de) * 2002-08-09 2004-02-26 Sig Technology Ltd. Verfahren und Vorrichtung zur Herstellung blasgeformter Hohlkörper aus thermoplastischen Kunststoffen
US7918247B2 (en) * 2004-10-20 2011-04-05 Ames True Temper, Inc. Garden hose with backbone
WO2010085612A2 (en) * 2009-01-23 2010-07-29 Mars, Incorporated Product shaping method and apparatus
US8235701B2 (en) * 2009-06-20 2012-08-07 Guill Tool & Engineering Co., Inc. Adjustment mechanism for extrusion die
JP5693258B2 (ja) * 2011-01-26 2015-04-01 日本コヴィディエン株式会社 押出成形金型、押出成形装置、及び、医療用チューブの製造方法
WO2013076155A1 (de) * 2011-11-22 2013-05-30 Gardena Manufacturing Gmbh Gartenschlauch
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