WO2013076154A1 - Tuyau d'arrosage à couche textile intermédiaire - Google Patents

Tuyau d'arrosage à couche textile intermédiaire Download PDF

Info

Publication number
WO2013076154A1
WO2013076154A1 PCT/EP2012/073256 EP2012073256W WO2013076154A1 WO 2013076154 A1 WO2013076154 A1 WO 2013076154A1 EP 2012073256 W EP2012073256 W EP 2012073256W WO 2013076154 A1 WO2013076154 A1 WO 2013076154A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
yarn
fabric
garden hose
fixing
Prior art date
Application number
PCT/EP2012/073256
Other languages
German (de)
English (en)
Inventor
Edmond Wenzel
Timo Grossmann
Original Assignee
Gardena Manufacturing Gmbh
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 Gardena Manufacturing Gmbh filed Critical Gardena Manufacturing Gmbh
Publication of WO2013076154A1 publication Critical patent/WO2013076154A1/fr

Links

Classifications

    • 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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • F16L11/085—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more braided layers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
    • D04B1/225—Elongated tubular articles of small diameter, e.g. coverings or reinforcements for cables or hoses
    • 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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • F16L11/085—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more braided layers
    • F16L11/086—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more braided layers two layers

Definitions

  • the invention relates to a garden hose with fabric insert.
  • a hose construction of an inner jacket layer and an outer jacket layer and a fabric insert arranged between them is common.
  • First and second cladding layers are usually made of PVC, wherein the materials for the two cladding layers may have different Shore hardnesses.
  • the tubing is produced by the extrusion process, wherein first the inner shell layer is extruded and wound on this or the fabric insert is knitted.
  • the second cladding layer is extruded, which has contact surfaces with the first cladding layer through the meshes provided in the fabric inlay and forms a close and stable material connection to the first cladding layer at these contact surfaces.
  • the present invention has for its object to improve the shape stability and bursting over a long period of use in a low-cost garden hose with fabric insert.
  • the invention is described in the independent claim.
  • the dependent claims contain advantageous refinements and developments of the invention.
  • the simple measure of the use of a fixing material between the yarn of the fabric insert and at least one of the two cladding layers provides a significant improvement in the dimensional stability of the hose after changing and sustained high pressure loads even at elevated temperatures, including above all temperatures up to about 60 ° C understood , A permanent torsional deformation of the hose can be largely avoided and the expansion of the hose at high pressures is greatly reduced.
  • a significant improvement in the clamping connection of the hose end with a connection part which typically takes place by attaching the inner circumferential surface to a nozzle of the connecting part and radial pressing of retaining claws in the outer surface of the hose.
  • the effect of the fixing material provided according to the invention is likely to be based on an improved fixation of the yarn of the fabric relative to at least one of the two sheath layers and the improved mutual fixation of intersecting sections of the yarn of the fabric, in particular in a preferred embodiment of the fabric insert at least partially as a mesh fabric
  • a fixing material is generally understood to mean a material which increases the fixing of the yarn of the fabric insert relative to at least one of the two sheath layers.
  • the fixing material forms a higher surface adhesion of smooth surfaces of yarn material and material of the first or second cladding layer.
  • the improved adhesion of the yarn of the fabric to a cladding layer can also be effected by an improved embedding of the yarn in the fixing material and its firm connection with the material of the cladding layer.
  • the fixing material may be provided as a surface coating on the yarn of the fabric insert, so that the yarn is already applied to the outer surface of the first layer when applied to the yarn
  • Sheath layer is completely surrounded by the fixing material.
  • fixing material may be present as an admixture with the material of the yarn.
  • the fixing material may be added in a further advantageous embodiment, the material of the first and / or the second cladding layer.
  • the fixing material can be inserted as at least one planar intermediate layer between the fabric insert and one of the jacket layers. Since, as a rule, the fabric insert between the yarn runs forms openings through the fabric layer, the area fraction of these openings typically occupying the by far largest portion of the surface of the fabric layer, the first and second jacket layers are also directly or optionally interposing a flat intermediate layer via these openings from the fixing material connected to each other.
  • a planar intermediate layer of the fixing material is preferably provided between the two fabric layers.
  • the intermediate layer then forms, with the exception of the punctiform intersections of yarn strands of the first fabric layer with the second fabric layer, both an intermediate layer between the first fabric layer and the second jacket layer and an intermediate layer between the second fabric layer and the first jacket layer and at the same time an intermediate layer in the overlapping regions directly between the first and second cladding layers.
  • a plurality of intermediate layers may be provided from one or different fixing materials, in which case advantageously two radially successive intermediate layers of fixing material enclose a fabric layer between them.
  • a flat intermediate layer can in particular be produced as a further extrusion layer or applied as a band spiral around the underlying fabric layer.
  • both the first and second cladding layers consist at least predominantly of inexpensively available PVC (polyvinyl chloride).
  • the fixing material may also consist of PVC.
  • PVC is available in a wide range of Shore hardness, with typically higher Shore hardness material also having a higher softening temperature.
  • a material having a greater Shore hardness than for the first cladding layer can be provided for the second cladding layer.
  • the first cladding layer has a higher, in particular by 5-15 Shore hardness higher Shore hardness than the material of the second cladding layer.
  • the material of the first cladding layer has a hardness of between 75 and 85 Shore and the material of the second cladding layer has a hardness of between 65 and 75 Shore.
  • the fixing material advantageously has a lower softening temperature and thus typically a lower Shore hardness than the first and the second skin layer.
  • the Shore hardness of the first shell material is advantageously at least 70 Shore.
  • the Shore hardness of the fixing material is advantageously softer by at least 5 degrees of hardness, in particular at least 10 degrees of Shore hardness, than the material of the first and second sheath layers.
  • FIG. 4 shows an embodiment with two fixing layers.
  • FIG. 5 shows an embodiment with a double fabric layer and three
  • Fig. 1 shows a cross section through a hose SC.
  • a circular cross-section For the tube is assumed in a conventional manner a circular cross-section. The thickness of the individual layers is not to scale.
  • the tube contains in a conventional manner a first cladding layer M1, which forms an inner tube around the inner space IR containing during operation.
  • a fabric insert made of a tensile yarn GA is arranged, which counteracts an expansion of the inner tube formed by the first cladding layer M1 during operation under pressurized interior IR.
  • the fabric insert is in turn surrounded by a second outer layer forming a second jacket M2, which protects the fabric insert against external damaging influences and which also forms the outer tube surface in the example outlined.
  • the tube SC may also contain, over the jacket layer M2, another liner layer forming the outer surface of the tube or inserts of a different material within the second jacket layer M2.
  • FIG. 2 shows a simple example of a fabric knitted in helical turns about the longitudinal axis LA of the tube with a continuous yarn thread GA, the illustration being viewed as a development of the layer of the fabric insert into a plane.
  • the stitches of the knitted fabric form openings MO in the fabric layer whose transverse dimensions are typically large in relation to the diameter of the yarn thread GA.
  • the knitting direction is inclined by the coiled knitting operation against the longitudinal axis LA.
  • Common fabric layers which are typically designed as so-called knitted or knitted tricot fabrics, show more complex mesh structures and tighter, sometimes also multiple overlaps and wraps of yarn thread sections.
  • Fig. 3 shows in various stages of the production of the hose a section of the outside of the inner cladding layer M1 with subsequent components.
  • a fabric having one or more yarn yarns G1 is applied, of which yarn yarns only the end surfaces of yarn yarns lying in the sectional plane are shown.
  • the yarn threads are typically slightly pressed into the surface of the first jacket material M1 by the process of winding or knitting this first fabric layer.
  • Mesh openings of the first fabric layer are designated MO1.
  • the yarn threads are shown for simplicity with a circular cross section without dividing into filaments and usually rather flattened.
  • the diameter of the yarn threads in free tension is typically about 0.1 mm.
  • a planar intermediate layer of a fixing material HM is deposited by extrusion via the first fabric layer formed by the yarn threads G1.
  • the still plastically soft fixing material HM emerging from the associated extrusion nozzle settles on and around the yarn threads G1 and in the stitch openings MO1 directly onto the outside of the first jacket layer M1.
  • the material of the fixing layer HM and the material of the first cladding layer M1 are selected such that, upon direct contact of the fixing material HM with the first cladding layer M1, a boundary layer which firmly melts the two materials together is formed.
  • the first cladding layer M1 and the fixing layer HM are made of PVC, wherein the PVC material of the fixing layer HM has a lower Shore hardness and a lower softening temperature than the material of the first cladding layer M1.
  • PVC material of the fixing layer HM has a lower Shore hardness and a lower softening temperature than the material of the first cladding layer M1.
  • a further fabric layer with yarn threads G2 is applied to the outer surface of the fixing layer HM, the first and the second fabric layers preferably being in the form of coiled knit fabrics with mutually opposed helical ends. From the second fabric layer again only the lying in the sectional plane faces of the yarn threads G2 are shown.
  • the mesh openings of the second fabric layer are designated M02.
  • the second cladding layer M2 is applied to the second fabric layer by extrusion from a further extrusion die. In the mesh openings MO2, the material of the second cladding layer is applied directly to the fixing material.
  • the material of the second cladding layer M2 preferably has a higher hardness and a higher softening temperature than the fixing material HM.
  • the fixing material again sufficiently softens and the yarn threads G2 of the second fabric layer are embedded in the fixing material HM and largely enclosed by the latter, whereby the outer surface of the fixing material HM also smoothes and the fixing material forms an intermediate layer ZS between the first Cladding layer M1 and the second cladding layer M2 forms with approximately constant thickness.
  • the mean layer thickness of the intermediate layer ZS is advantageously between 0.5 times and 2 times the diameter of the yarn threads G1, G2.
  • the layer thickness of the intermediate layer ZS is typically in the range between 0.2 mm and 0.6 mm.
  • FIG. 4 shows an exemplary embodiment in which a first layer H1 of a fixing material is deposited on the first cladding layer made of the first material M1 as a layer running around the first cladding layer M1, preferably by extrusion.
  • This layer has a lower softening temperature or lower Shore hardness than the cladding layer M1.
  • a fabric insert G1 is applied to this first fixing layer H1, which burrows deeply into the material of the first fixing layer due to the low hardness of the possibly doughy first fixing layer H1 and thus already largely enclosed by this first fixing layer to a considerable extent or even already can be.
  • a second fixing layer HD is applied to the first fixing layer H1 with the fabric layer G1 as a cover layer, which leads to an additional complete enclosure of the yarn threads of the fabric.
  • the softening temperature or Shore hardness of this second fixing layer HD may be the same as or slightly higher than that of the first fixing layer H1.
  • the material of the second fixing layer HD is
  • the second fixing layer HD is advantageously so thick together with the first fixing layer H1 that the outwardly facing surface of the second fixing layer HD essentially forms again a smooth lateral surface.
  • the outer surface of the second fixing layer HD can advantageously be used for receiving an optical structure by printing on the outer surface of the second fixing layer HD or by laminating structured film parts, in particular in strip form.
  • the second cladding layer M2 is then on the second M2 is then deposited on the second fixing layer HD, optionally with the interposition of an optical structure, in a new extrusion step.
  • FIG. 5 shows a further embodiment with a double fabric insert, which combines the procedures according to FIGS. 3 and 4.
  • a first fixing layer H1 is applied by extrusion and on this the first fabric layer G1 is applied, which digs deep as described in FIG. 4 in the first fixing layer.
  • a second fixing layer H2 is extruded onto this first fabric layer and the first fixing layer H1, via which layer thereafter the second fabric layer is applied, which burrows into the material of the second fixing layer.
  • a further fixing layer is extruded analogously to the fixing layer HD as a cover layer, which in turn can form a smooth outer surface to the second jacket layer to be extruded thereafter.
  • the features of the various layer structures can also be realized with one another in variants other than those described, wherein, in particular, the fixing layer HD can be dispensed with if a smooth outer surface to the second jacket layer is not required.
  • the production of a fabric layer on a low-hardness fixing layer advantageously already leads to a strong embedding of the yarn threads into the respective fixing layer during the production of the fabric.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

L'invention concerne un tuyau d'arrosage comportant au moins deux couches extérieures (M1, M2) successives interconnectées ainsi qu'une couche textile intermédiaire disposée entre une première (M1) et une deuxième (M2) des deux couches extérieures, ladite couche textile intermédiaire se composant de fil (G1) résistant à la traction, d'un matériau-fil différent de celui constituant les couches extérieures. Le fil (G1) est relié à au moins une des deux couches extérieures (M1, M2) par l'intermédiaire d'un matériau de fixation (HD).
PCT/EP2012/073256 2011-11-21 2012-11-21 Tuyau d'arrosage à couche textile intermédiaire WO2013076154A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011055569 2011-11-21
DE102011055569.2 2011-11-21

Publications (1)

Publication Number Publication Date
WO2013076154A1 true WO2013076154A1 (fr) 2013-05-30

Family

ID=47227789

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/073256 WO2013076154A1 (fr) 2011-11-21 2012-11-21 Tuyau d'arrosage à couche textile intermédiaire

Country Status (1)

Country Link
WO (1) WO2013076154A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1100885A (fr) * 1954-03-05 1955-09-26 Brandt Soc Nouv Ets Tuyau flexible
GB1062300A (en) * 1965-02-19 1967-03-22 Angus George Co Ltd Improvements in hoses
US3332447A (en) * 1964-10-02 1967-07-25 Imp Eastman Corp Hose construction
GB1589130A (en) * 1977-09-06 1981-05-07 Kakuichi Co Synthetic resin hose
US4306591A (en) * 1980-03-03 1981-12-22 The Gates Rubber Company Hose with improved resistance to deformation, and method
US5613523A (en) * 1994-09-12 1997-03-25 Braun Aktiengesellschaft Hot water resistant pressure hose
EP1154185A2 (fr) * 2000-05-10 2001-11-14 Gilmour, Inc. Conduit flexible renforcé et procédé de fabrication associé
US20060127620A1 (en) * 2004-12-14 2006-06-15 Fisher William C Electrically-conductive hose
WO2010049762A1 (fr) * 2008-10-31 2010-05-06 Tecnotubi Picena S.R.L. Tuyau d'irrigation avec résistance élevée à la pression et résistance élevée à la torsion
WO2010052657A2 (fr) * 2008-11-04 2010-05-14 Fitt S.P.A. Tuyau souple d'irrigation multicouche

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1100885A (fr) * 1954-03-05 1955-09-26 Brandt Soc Nouv Ets Tuyau flexible
US3332447A (en) * 1964-10-02 1967-07-25 Imp Eastman Corp Hose construction
GB1062300A (en) * 1965-02-19 1967-03-22 Angus George Co Ltd Improvements in hoses
GB1589130A (en) * 1977-09-06 1981-05-07 Kakuichi Co Synthetic resin hose
US4306591A (en) * 1980-03-03 1981-12-22 The Gates Rubber Company Hose with improved resistance to deformation, and method
US5613523A (en) * 1994-09-12 1997-03-25 Braun Aktiengesellschaft Hot water resistant pressure hose
EP1154185A2 (fr) * 2000-05-10 2001-11-14 Gilmour, Inc. Conduit flexible renforcé et procédé de fabrication associé
US20060127620A1 (en) * 2004-12-14 2006-06-15 Fisher William C Electrically-conductive hose
WO2010049762A1 (fr) * 2008-10-31 2010-05-06 Tecnotubi Picena S.R.L. Tuyau d'irrigation avec résistance élevée à la pression et résistance élevée à la torsion
WO2010052657A2 (fr) * 2008-11-04 2010-05-14 Fitt S.P.A. Tuyau souple d'irrigation multicouche

Similar Documents

Publication Publication Date Title
EP2799035B1 (fr) Implant pour influer sur la circulation du sang
DE69726650T2 (de) Prothese, insbesondere bei Aneurismus mit einem Anschluss zwischen ihrem Gewebe und ihrer Struktur
DE2720017C2 (de) Flexibler Schlauch
EP0698379B1 (fr) Prothèse vasculaire textile, procédé et dispositif pour sa fabrication
DE2858676C2 (fr)
DE60009951T2 (de) Stützstruktur für steife verbundbauteile
DE4128611C2 (de) Ausfransfestes, selbsttragendes, gewobenes Gefäßimplantat und Verfahren zu seiner Herstellung
DE69713624T2 (de) Verstärkter schlauch
WO2012031748A2 (fr) Implant destiné à influencer le débit sanguin en cas de malformations artérioveineuses
EP2946750B1 (fr) Endogrèffe et système d'insertion
EP1032329B1 (fr) Extenseur pour operations d'implantation dans le corps humain, notamment dans des vaisseaux sanguins
DE3514750A1 (de) Dichtung fuer aggressive umgebungsbedingungen
EP0350732A2 (fr) Câble formé, élité
EP1051548B1 (fr) Produit textile en forme de ruban et procede pour la production d'un corps renforce avec ce produit textile
EP0701080A2 (fr) Tuyau flexible sous pression résistant à la chaleur
DE2653619A1 (de) Bremsschlauch fuer hydraulische bremsanlagen
DE69109675T2 (de) Geflechte und dessen herstellungsverfahren.
DE60103207T2 (de) Schlauch, insbesondere für Wasseranwendungen
EP0826915A2 (fr) Tuyau pour carburant et procédé pour sa fabrication
WO2013076154A1 (fr) Tuyau d'arrosage à couche textile intermédiaire
DE19730838C2 (de) Schlauchsystem
DE2209928A1 (de) Dreidimensionales gewebe und verfahren zu dessen herstellung
EP1827333B1 (fr) Materiau servant a produire une bande de maintien
DE10127602A1 (de) Stent zur Implantation im menschlichen Körper
EP0829662B1 (fr) Joint d'etanchéité constitué d'un cordon fermé sur lui-même; procédé de fabrication

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12791466

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12791466

Country of ref document: EP

Kind code of ref document: A1