JPH0317855B2 - - Google Patents

Info

Publication number
JPH0317855B2
JPH0317855B2 JP63032962A JP3296288A JPH0317855B2 JP H0317855 B2 JPH0317855 B2 JP H0317855B2 JP 63032962 A JP63032962 A JP 63032962A JP 3296288 A JP3296288 A JP 3296288A JP H0317855 B2 JPH0317855 B2 JP H0317855B2
Authority
JP
Japan
Prior art keywords
filament
conductive
filaments
reinforced plastic
plastic body
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
JP63032962A
Other languages
English (en)
Other versions
JPS63234035A (ja
Inventor
Uiriamu Boodonaa Daruton
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.)
Ameron Inc
Original Assignee
Ameron Inc
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 Ameron Inc filed Critical Ameron Inc
Publication of JPS63234035A publication Critical patent/JPS63234035A/ja
Publication of JPH0317855B2 publication Critical patent/JPH0317855B2/ja
Granted 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7214—Fibre-reinforced materials characterised by the length of the fibres
    • B29C66/72141—Fibres of continuous length
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
    • B29C70/882—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding
    • B29C70/885—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding with incorporated metallic wires, nets, films or plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00
    • F16L25/01—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00 specially adapted for realising electrical conduction between the two pipe ends of the joint or between parts thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • F16L9/125—Rigid pipes of plastics with or without reinforcement electrically conducting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • F16L9/127—Rigid pipes of plastics with or without reinforcement the walls consisting of a single layer
    • F16L9/128—Reinforced pipes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00—Carrying-off electrostatic charges
    • H05F3/02—Carrying-off electrostatic charges by means of earthing connections
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4855—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by their physical properties, e.g. being electrically-conductive
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4865—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives
    • B29C65/487—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their shape, e.g. being fibres or being spherical
    • B29C65/4875—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their shape, e.g. being fibres or being spherical being spherical, e.g. particles or powders
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4865—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives
    • B29C65/487—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their shape, e.g. being fibres or being spherical
    • B29C65/488—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their shape, e.g. being fibres or being spherical being longitudinal, e.g. fibres
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4865—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives
    • B29C65/4885—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their composition being non-plastics
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4865—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives
    • B29C65/4885—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their composition being non-plastics
    • B29C65/489—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their composition being non-plastics being metals
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7394—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0005—Conductive
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Reinforced Plastic Materials (AREA)
  • Moulding By Coating Moulds (AREA)
  • Laminated Bodies (AREA)

Description

【発明の詳现な説明】 産業䞊の利甚分野 本発明は䟋えばプラスチツクシヌト、プラスチ
ツクパむプなどのような改良された導電性フむラ
メント補匷プラスチツク䜓及びその補法に関す
る。
埓来の技術 プラスチツクパむプが各皮工業郚門においお耐
食導管ずしお採甚されお久しい。埓来のプラスチ
ツクパむプの欠点は導電率が䜎いため危険な静電
荷を発生させるこずにある。䟋えばロむズ・オ
ブ・ロンドンLloyd′  of Londonロンド
ンのロむド船玚協䌚の堎合、船䞊で石油補品を
取扱うのに䜿甚されるフアむバヌグラスパむプは
いずれも液流によ぀おパむプ䞭に発生する静電荷
が倧地ぞ逃げるようにするためASTM 
257−76に埓぀お詊隓した結果衚面抵抗が109オ
ヌム以䞋でなければならない。本発明以前に補造
された埓来のフアむバヌグラス補匷パむプは衚面
抵抗が玄1012オヌムであり、埓぀お䞊蚘甚途には
䞍適圓である。たた、高呚波電磁ビヌムを遮蔜す
る甚途に぀いおも、経枈的な䟡栌の導電性プラス
チツクシヌトなら広く利甚されるであろう。
本発明以前には黒鉛、炭玠、銀、アルミニり
ム、銅の粉末たたは粒子のような導電材をゎム及
びプラスチツク補品に組蟌むこずにより静電荷発
生を防止したり、高呚波シヌルドを圢成しおい
た。導電性を高めるために现断した金属繊維や導
電性グラスフむラメントをプラスチツク補品に組
蟌む方法も採甚されおいる。“ポリマヌ・゚ンゞ
ニアリング・アンド・サむ゚ンスPolymer
Engineering and Science”1977幎12月刊、第
17巻、第12号に掲茉された論文“導電性重合組成
物”はプラスチツク物品の熱䌝導及び導電性を高
めるために導電性フアむバヌや導電材の球、薄
片、䞍芏則粒子などを利甚する方法を開瀺しおい
る。この論文は繊維状導電材の方が球、薄片、䞍
芏則粒子よりも導電性を著しく改善するず述べお
いる。しかし、最倧瞊暪比が玄35の短い繊維
ず粒子にしか蚀及しおいない。なお、瞊暪比ずは
導電郚材の長さず盎埄ずの比である。たた、導電
性の粉末、粒子及び现断フむラメントを䜿甚する
堎合、導電率を所望レベルたで高めるには比范的
倚量の材料を必芁ずするため、コストが高くな
る。
かくしお、導電性プラスチツクの利点は既に叀
くから公知であるにも拘らず、本発明以前には経
枈性に問題があ぀たため倚くの甚途でその䜿甚が
制限されお来た。
埓来のフむラメント補匷プラスチツクパむプ補
造に際しおは、フアむバヌグラス、ナむロンなど
のような補匷材から成る数癟本のフむラメントを
束ねお“゚ンドend”繊維束たたは粗玡糞
を圢成し、玄15本の“゚ンド”をたずめお“スト
ランドstrand”を圢成する。埓぀おこのスト
ランドは数千本のフむラメントを含むこずにな
る。さらに、玄10乃至玄40ストランドをたずめお
テヌプ、り゚ツプたたは垯を圢成し、これに液状
暹脂を含浞させるこずにより個々のフむラメント
プラスチツクでコヌテむングし、暹脂含浞垯を回
転心棒に巻着する。巻着経路は心棒の回転軞線に
察しお玄54゜の角床を圢成する単玔螺旋ずなるの
が普通である。垯を心棒に沿぀お先ず右ぞ、次い
で巊ぞオヌバヌラツプ螺旋状に巻着しお均等に補
匷されたパむプ壁を圢成する。フむラメントは抂
ね連続的な、単䞀方向の繊維であり、グラスやア
スベストのような鉱物繊維、りヌルのような動物
繊維、コツトンのような怍物繊維、たたはナむロ
ン、レヌペン、ダクロン、オルロンなどのような
合成繊維でよい。
垯に含浞させ、フむラメントを浞最させるのに
䜿甚する暹脂たたは接着剀は巻着たたは積局工皋
に䜿甚される適圓な熱硬化たたは熱可塑暹脂でよ
い。䟋えば゚ポキシ、ポリ゚ステル、ビニヌル゚
ステル、フラン、プノヌル−ホルムアルデヒド
などのような熱硬化暹脂を含有する接着剀、たた
は塩化ポリビニヌル、塩化ポリビニリデンなどの
ような熱可塑暹脂を含有する接着剀を䜿甚するこ
ずができる。
ホフHofの米囜特蚱第3499815号及びニナ
ヌマンNewmanの米囜特蚱第3519520号は埓
来タむプのフアむバヌ補匷プラスチツクパむプの
補造装眮及び補法を開瀺しおいる。この皮の公知
パむプは耐食性を芁求される倚くの甚途においお
有効であるが、静電荷発生が危険状態を誘発する
ような甚途では䜿甚が制限される。
シ゚リダンSheridanの米囜特蚱第3070132
号、ペツツ゚タキスPetzetakisの米囜特蚱第
3555170号、ゞダク゜ンJacksonの米囜特蚱
第3580983号、今村等の米囜特蚱第3958066号及び
カヌル゜ンCarlson等の米囜特蚱第3963856
号はプラスチツク補品に金属ワむダヌ、金属たた
は炭玠粒子を埋蟌むこずによ぀おプラスチツク補
品の熱䌝導率及び導電率を高める各皮方法を開瀺
しおいる。既に指摘したように、この方法は経枈
性に問題があり、䟋えば商業ベヌスのプラスチツ
クパむプ補造には倚甚されるに至぀おいない。
発明の目的 本発明は船䞊プラスチツクパむプに䜿甚するた
めの安党条件を満たすず共に有効な高呚波シヌル
ドを圢成するに充分な導電率を有する比范的安䟡
なフむラメント補匷プラスチツク䜓及びその補法
を提䟛するこずを目的ずする。
発明の抂芁 本発明のフむラメント補匷プラスチツク䜓は、
プラスチツクコヌテむングされた耇数のフむラメ
ントから成る垯をオヌバヌラツプさせお圢成した
壁を有し、前蚘耇数のフむラメントの倧郚分が非
導電性フむラメントであり、少なくずも぀の前
蚘垯における前蚘耇数のフむラメントの小郚分が
導電性フむラメントであり、圓該導電性フむラメ
ントが壁の厚さ方向にわた぀おほが均䞀に分垃さ
れおいるものである。こうしお、極めお導電率が
高く、しかも金属含有量の極めお䜎いプラスチツ
ク物品が埗られる。
本発明の補法の奜たしい実斜䟋では、液状暹脂
でコヌテむングした通垞の導電性連続フむラメン
トから成る垯を導電性フむラメントが壁の厚さ方
向にわた぀お分垃されるように心棒ぞオヌバヌラ
ツプ螺旋状に巻着するこずにより所望の厚さの管
状補匷壁を圢成する。最終補品がプラスチツクパ
むプなら、管状のたたで心棒から取倖せる剛状態
になるたで心棒呚りで硬化させる。
最終補品が高呚波電磁ビヌム遮蔜物ずしお成圢
できるプラスチツクシヌトなら、心棒呚りでの暹
脂硬化を、補品の壁が未だ可撓性を保぀ように途
䞭で停止させ、心棒呚りに䜍眮しおいる間に心棒
の長手方向軞線ず平行な線に沿぀お前蚘管状物た
たは積局物を切開するこずによりシヌトを埗、こ
れを所望の圢状を有する剛性物品ずしお成圢及び
硬化する。管状壁を䞊蚘方向ずは異なる方向に切
開するこずも可胜である。䟋えば垯ず盎亀する線
に沿぀お螺旋状に切開しおもよい。
実斜䟋 以䞋添付図面に埓぀お本発明を詳述する。第
図においお、雄端を有する第パむプ片
を接着剀局を介しお雌端を有する第パ
むプ片に結合する。接着剀局は玄9.53mm玄
むンチの長さに切断した導電性フむラメン
トを重量比で玄含む普通の゚ポキシ暹脂であ
る。
各パむプ片は図瀺しない回転心棒に連続的
なフむラメントから成る暹脂含浞垯り゚ツプた
たはテヌプを螺旋状に巻着しお圢成する。
巻着経路は心棒の回転軞線に察しお玄54゜の角床
を圢成する単玔な螺旋である。こうしお心棒に沿
぀お先ず右ぞ、次いで巊ぞ垯を巻着しおオヌバヌ
ラツプされた局を圢成するこずにより均等に補匷
されたパむプ壁を圢成する。各垯は詳现には図
瀺しないが普通の連続的なフアむバヌグラス粗
玡糞ストランドを19本及び連続的な導電性フ
アむバヌグラスフむラメントのストランドを
本含み、合蚈20本で幅玄5.08cm玄むンチ
の垯を圢成する。各ストランドは15本の“゚ン
ド”は408本のフむラメントを含み、埓぀お、各
ストランドは合蚈的玄6000本のフむラメントを含
む。導電性フアむバヌグラスフむラメントの量は
垯を構成する導電性フむラメントストランドに
察する通垞フアむバヌグラスのストランド数を増
やすこずによ぀お枛らすこずができる。䟋えば導
電性粗玡糞の䜿甚量がストランドのたたでも垯
幅を5.08cmむンチから12.7cmむンチ
に拡げるこずができる。導電性フむラメントは
1977幎12月号“ポリマヌ・゚ンゞニアリング・ア
ンド・サむ゚ンス”に掲茉されたドナルド・・
ビツグDonald M.Biggの論文“導電性重合
組成物”に蚘茉されおいるようなものでもよい。
本発明に䜿甚できる導電性フむラメントはMBA
ア゜シ゚ヌツMBA Associatesからも埗ら
れる。この皮の補品はポンド圓たり201.2乃至
1097220ダヌド乃至1200ダヌドのストラン
ドから成るのが普通である。
第図は代衚的な導電性フむラメントの暪
断面図である。フむラメントは盎埄が玄20ÎŒ
玄0.8ミルの通垞の円筒状グラスフアむバヌ
を含む。グラスフアむバヌの党長に亘぀お、䜆
し呚面の半分だけに厚さ2.5Ό0.1ミルのアルミ
ニりムコヌテむングを斜す。導電性フむラメ
ントの党呚面をアルミニりムその他の適圓な材料
でコヌテむングしおもよいこずはいうたでもな
い。
本発明に䜿甚されるフむラメントは導電性のも
のも非導電性のものも被補匷物の党長に亘぀お連
続的である。埓぀お、連続的な導電性フむラメン
トは500たたはそれ以䞊の倧きい瞊暪比長
さ盎埄を瀺すこずになる。䟋えば長さ609.6
cm20フむヌトのパむプ片における連続的な導
電性フむラメントの瞊暪比は240000以䞊であ
る。フむラメントはグラスやアスベストのような
鉱物繊維、りヌルのような動物繊維、コツトンの
ような怍物繊維のほか、ナむロン、レヌペン、ダ
クロン、オルロンなどのような合成繊維でもよ
い。
垯に含浞させ、フむラメントをコヌテむングす
るのに䜿甚する暹脂たたは接着剀ずしおは、巻着
たたは積局工皋においお䜿甚される適圓な熱硬化
たたは熱可塑暹脂を䜿甚するこずができる。䟋え
ば、゚ポキシ、ポリ゚ステル、メラミン−ホルム
アルデヒド、尿玠ホルムアルデヒド、プノヌル
−ホルムアルデヒドなどのような熱硬化暹脂を含
有する接着剀たたは塩化ポリビニル、塩化ポリビ
ニリデンなどのような熱可塑暹脂を含有する接着
剀を䜿甚できる。
第図図瀺のようなパむプは公称盎埄が5.08cm
むンチずなるように圢成されたものである
平均倖埄6.06cm2.384むンチ、平均内埄5.33cm
2.098むンチ。パむプは平均壁厚0.58mm0.023
むンチの普通の内匵りを含み、平均補匷壁
厚は3.05mm0.120むンチずなる。圓業者の間
でベヌル補匷内匵りず呌ばれるこの内匵りを
先ず心棒に巻着しおから普通のフアむバヌグラス
フむラメント及び導電性グラスフむラメントから
成る゚ポキシ暹脂含浞垯を局重ねる。各局は
぀のサヌキツトを含み、各サヌキツトを圢成する
には心棒に沿぀お各方向に垯を回パスさせねば
ならない。即ち、パむプの補造に際しおは先ず心
棒に厚さ0.25mm10ミルのベヌル材を
オヌバヌラツプでパスさせ、次いで぀の方向に
垯をパスさせ、さらに反察方向にもパスさせお第
サヌキツトを圢成し、同様に第サヌキツトを
圢成しお第局を完成する。空極的には぀の局
を圢成しお最終パむプ壁厚を埗る。心棒に沿぀お
各方向ごずに回のパスを含むサヌキツトを局ご
ずに぀圢成するには合蚈しお心棒沿いに垯を
回パスさせる必芁がある。プラスチツクパむプ補
造の圓業者に公知の、他の方法及び材料を採甚し
おもよい。
パむプを圢成したら赀倖線䞋で暹脂をゲル化
し、149℃300〓で時間に亘り事埌硬化させ
る。
パむプは重量比で玄2.9の導電性グラスたた
は玄0.4の金属を含む。ASTM  247−76に
埓぀お詊隓したパむプの盎流電気抵抗はロむズ・
オブ・ロンドンが蚭定しおいる最倧抵抗倀109オ
ヌムよりも遥かに䜎い8.3×101であ぀た。パむプ
壁を構成する垯䞭の導電性グラス粗玡糞ストラン
ドを省くこずを陀き、本発明ず党く同様に補造さ
れた埓来のフアむバヌグラス補匷プラスチツクパ
むプの抵抗倀は2.68×1012であ぀た。
たた、重量比で僅かに1.3の導電性グラスた
たは玄0.2の金属を含有するこずを陀いお䞊述
したように補造した類䌌の導電性パむプもロむ
ズ・オブ・ロンドンによる蚭定最倧倀よりも遥か
に䜎い抵抗倀を瀺した。
パむプの内偎に匵るベヌル材は導電性フむラ
メントを含んでいないから、その電気抵抗はパむ
プ倖面の電気抵抗倀よりも高い。パむプ内偎に䜎
電気抵抗が芁求され、しかもベヌル材の化孊的
䞍掻性が䞍必芁な甚途にはこのベヌル材を省け
ばよい。さもなければベヌル内匵りを匵る
前に心棒に第図に瀺すように導電性フむラ
メントのストランドを巻着するこずにより、
パむプ内偎の導電性を高める。導電性フむラメン
トのストランド及びベヌル内匵りはいずれも心
棒ぞ巻着する前に液状暹脂を含浞させるから、暹
脂の硬化に䌎な぀お䞡者が互いに結合される。
本発明のプラスチツク材を利甚しお高呚波電磁
ビヌム遮蔜甚のシヌトを補造する堎合もパむプ補
造ず同様の手順で行う。䜆しベヌルは採甚せ
ず、心棒には先ず図瀺しないがポリ゚チレ
ン・プラスチツクなどのように゚ポキシ暹脂が接
着し難い適圓な材料から成る第保護シヌトを巻
着する。次いで䞊述したのず党く同じ芁領で心棒
の呚りに管状の積局物を圢成し、その倖偎に同じ
くポリ゚チレン・プラスチツクの第保護シヌト
を巻着する。暹脂が恒久的な剛状態たで硬化する
前に心棒呚りの第保護シヌト及び積局物を心棒
の長手方向軞線ずほが平行な線に沿぀お切開す
る。さもなければ組の螺旋ず盎亀する螺旋経路
たたはその他所望の経路に沿぀お第シヌト
及び積局物を切開しおもよい。次いで扁平シヌト
の圢で心棒から積局物を取倖す。シヌトは最終圢
状を䞎えるたで暹脂が硬化しないように必芁に応
じお冷华空間に保管する。次いでシヌトを所望の
圢に成圢し、保護シヌトを陀去し、暹脂を剛状態
たで硬化させる。こうしお埗られた補品は金属含
有量が重量比で玄0.5であ぀おも高呚波ビヌム
に察しお有効な遮蔜効果を提䟛する。
本発明のフむラメント補匷プラスチツク䜓の断
面構造を第図に詳现に図瀺した。即ち、゚ポキ
シ暹脂から成る壁ず、図瀺しないが通垞
のフアむバヌグラスフむラメントず、アルミニり
ムのコヌテむングを斜したフアむバヌグラスフむ
ラメントずを含む。図解を単玔化するため導
電性フアむバヌグラス・フむラメントのストラン
ドだけを図瀺した。
発明の効果 以䞊の説明から明らかなように、本発明の補法
及びプラスチツク補品はパむプのほか、䟋えばパ
むプ取付具、構造郚材なども含む極めお広汎な導
電性構造の補法に応甚できる。
本発明の卓越した成果ずしお、連続的な導電性
フむラメントが党構造の極く䞀郚を圢成し、しか
も導電性フむラメントを非導電性硬化暹脂でコヌ
テむングするにも拘らず、終産物が極めお䜎い衚
面抵抗を瀺し、このこずは静電荷の発生が蚱され
ないような甚途に奜適であるこずを意味する。本
発明の補品はたた、金属含有量が極めお少ないに
も拘らず高呚波ビヌムに察するすぐれた遮蔜効果
を提䟛する。
【図面の簡単な説明】
第図は本発明に基づいお補造されたパむプ片
の互いに隣接する぀の端郚を導電性接着局を介
しお接合した状態を䞀郚切欠いお瀺す郚分立面図
であり、第図は本発明のパむプ補造に䜿甚され
る導電性グラスフむラメントの暪断面図であり、
第図は第図の−域における拡倧断面図で
ある。  第パむプ片、 第パむプ片の雄
端、 接着剀局、 第パむプ片、
 第パむプ片の雌端、 暹脂含浞垯、
 導電性フむラメントのストランド、 導電
性フむラメント、 グラスフアむバヌ、
 アルミニりムコヌテむング、 内匵り
ベヌル。

Claims (1)

  1. 【特蚱請求の範囲】  電気抵抗が比范的䜎いフむラメント補匷プラ
    スチツク䜓であ぀お、プラスチツクでコヌテむン
    グされた耇数のフむラメントから成る垯をオヌバ
    ヌラツプさせお圢成した壁を有し、前蚘耇数のフ
    むラメントの倧郚分が非導電性フむラメントであ
    り、少なくずも぀の前蚘垯における前蚘耇数の
    フむラメントの小郚分が導電性フむラメントであ
    り、圓該導電性フむラメントが前蚘壁の厚さ方向
    にわた぀おほが均䞀に分垃されおいるこずを特城
    ずするフむラメント補匷プラスチツク䜓。  各垯が導電性フむラメントを含むこずを特城
    ずする特蚱請求の範囲第項に蚘茉のフむラメン
    ト補匷プラスチツク䜓。  垯を螺旋状にオヌバヌラツプさせお巻着した
    こずを特城ずする特蚱請求の範囲第項に蚘茉の
    フむラメント補匷プラスチツク䜓。  導電性フむラメントがほが党長にわた぀お連
    続的であるこずを特城ずする特蚱請求の範囲第
    項に蚘茉のフむラメント補匷プラスチツク䜓。  ASTM D257−76に埓぀お詊隓した結果抵
    抗倀が109オヌム以䞋であるこずを特城ずする特
    蚱請求の範囲第項に蚘茉のフむラメント補匷プ
    ラスチツク䜓。  導電性フむラメントの瞊暪比が500以䞊であ
    るこずを特城ずする特蚱請求の範囲第項に蚘茉
    のフむラメント補匷プラスチツク䜓。  フむラメント補匷プラスチツク䜓の補造法で
    あ぀お、耇数のフむラメントの倧郚分が非導電性
    であり、少なくずも぀の垯における耇数のフむ
    ラメントの小郚分が導電性である連続的なフむラ
    メントから成る垯を液状プラスチツク暹脂でコヌ
    テむングし、前蚘導電性フむラメントが壁の厚さ
    方向にわた぀おほが均䞀に分垃されるように前蚘
    垯を心棒にオヌバヌラツプ状に巻着しお管状䜓を
    圢成し、しかる埌に液状プラスチツク暹脂を硬化
    しお固圢壁にするこずを特城ずするフむラメント
    補匷プラスチツク䜓の補法。  各垯に連続的な導電性フむラメントが配眮さ
    れおいるこずを特城ずする特蚱請求の範囲第項
    に蚘茉の補法。  心棒に垯を螺旋状にオヌバヌラツプさせお巻
    着する工皋を含むこずを特城ずする特蚱請求の範
    囲第項に蚘茉の補法。  心棒呚りの管状䜓を切開しおシヌトを圢成
    し、しかる埌に心棒から該シヌトを取倖すこずを
    特城ずする特蚱請求の範囲第項に蚘茉の補法。
JP63032962A 1978-04-03 1988-02-17 フィラメント補匷プラスチック䜓及びその補法 Granted JPS63234035A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US89273778A 1978-04-03 1978-04-03
US892,737 1978-04-03

Publications (2)

Publication Number Publication Date
JPS63234035A JPS63234035A (ja) 1988-09-29
JPH0317855B2 true JPH0317855B2 (ja) 1991-03-11

Family

ID=25400418

Family Applications (2)

Application Number Title Priority Date Filing Date
JP4022579A Granted JPS54135880A (en) 1978-04-03 1979-04-03 Filament reinforced plastics goods
JP63032962A Granted JPS63234035A (ja) 1978-04-03 1988-02-17 フィラメント補匷プラスチック䜓及びその補法

Family Applications Before (1)

Application Number Title Priority Date Filing Date
JP4022579A Granted JPS54135880A (en) 1978-04-03 1979-04-03 Filament reinforced plastics goods

Country Status (6)

Country Link
EP (1) EP0005440B1 (ja)
JP (2) JPS54135880A (ja)
BE (1) BE875302A (ja)
DE (1) DE2966540D1 (ja)
FR (1) FR2421721A1 (ja)
IT (1) IT1119552B (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4330811A (en) * 1978-04-03 1982-05-18 Ameron, Inc. Filament-reinforced plastic article
US4234648A (en) * 1979-01-29 1980-11-18 Hexcel Corporation Electrically conductive prepreg materials
US4494165A (en) * 1980-11-13 1985-01-15 Brunswick Corporation Filament composite structures providing lightning strike and electromagnetic protection
US4448838A (en) * 1981-09-04 1984-05-15 Lear Fan Corp. Graphite fiber reinforced laminate structure capable of withstanding lightning strikes
JPH0662727B2 (ja) * 1984-08-27 1994-08-17 日本合成ゎム株匏䌚瀟 ゎム組成物
FR2580055A1 (en) * 1985-04-03 1986-10-10 Magot Robert Protection of negative-temperature piping by means of a one-piece polyester shell
GB8729316D0 (en) * 1987-12-16 1988-01-27 Shrinemark Ltd Improvements relating to tube formation
US5108270A (en) * 1990-07-27 1992-04-28 The Aro Corporation Conductive plastic fluid handling equipment
US6013752A (en) * 1997-06-04 2000-01-11 Ameron International Corporation Halogenated resin compositions

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1088295B (de) * 1954-06-26 1960-09-01 Karl M C Ehlers Fa Elektrisch leitfaehiger Schlauch mit einer Bewehrungsein- und/oder -umlage im wesentlichen aus Textilgeflecht
NL274584A (ja) * 1961-02-10
FR1308575A (fr) * 1961-06-03 1962-11-09 Tubes, tuyaux et plaques à double paroi en matiÚre synthétique, et procédé de fabrication
US3635256A (en) * 1970-03-02 1972-01-18 Universal Oil Prod Co Wear-resistant tube
DE2010021A1 (en) * 1970-03-04 1971-09-23 Continental Gummi Werke Ag Rubber or plastic tube with fibre reinforce- - conductors
CH586104A5 (ja) * 1973-11-22 1977-03-31 Basf Ag
JPS5316427B2 (ja) * 1973-12-05 1978-06-01
US3914002A (en) * 1974-04-17 1975-10-21 Sherwood Medical Ind Inc Conductive tubing and method of making same
JPS5392884A (en) * 1977-01-25 1978-08-15 Nitto Electric Ind Co Ltd Electro-conductive reinforced plastic pipe and its preparation

Also Published As

Publication number Publication date
JPS54135880A (en) 1979-10-22
EP0005440B1 (en) 1984-01-18
BE875302A (fr) 1979-10-03
EP0005440A1 (en) 1979-11-28
JPH0129812B2 (ja) 1989-06-14
IT7967694A0 (it) 1979-04-03
FR2421721A1 (fr) 1979-11-02
IT1119552B (it) 1986-03-10
JPS63234035A (ja) 1988-09-29
DE2966540D1 (en) 1984-02-23

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