WO2013076155A1 - Tuyau d'arrosage - Google Patents

Tuyau d'arrosage Download PDF

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Publication number
WO2013076155A1
WO2013076155A1 PCT/EP2012/073257 EP2012073257W WO2013076155A1 WO 2013076155 A1 WO2013076155 A1 WO 2013076155A1 EP 2012073257 W EP2012073257 W EP 2012073257W WO 2013076155 A1 WO2013076155 A1 WO 2013076155A1
Authority
WO
WIPO (PCT)
Prior art keywords
garden hose
hose according
longitudinal
region
grip
Prior art date
Application number
PCT/EP2012/073257
Other languages
German (de)
English (en)
Inventor
Edmond Wenzel
Aleksandar Tatic
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 WO2013076155A1 publication Critical patent/WO2013076155A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/022—Mechanical properties
    • 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
    • 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
    • F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
    • F16L11/121—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting specially profiled cross sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent

Definitions

  • the invention relates to a garden hose.
  • Garden hoses are typically made from a resilient plastic material by extrusion.
  • the garden hoses can be material-homogeneous in the radial layering or preferably have a plurality of radially successive sheath layers, optionally with the interposition of a fabric layer.
  • a smooth surface when winding the hose for the user is pleasant, since in this case the hose typically slides quickly through a user's hand leading him.
  • a smooth tube surface is less pleasant, since in particular with a moist tube surface and / or wet user's hand, the precise handling is impaired.
  • the invention has for its object to provide a garden hose with producible by extrusion outer surface, which has an improving handling.
  • the materials forming the respective surface differ with regard to the grip between the material surface and a user's hand, in particular in the presence of moisture, advantageously a compromise between the requirements the two mentioned handling situations are found.
  • an increased grip can be avoided without a large-scale relief structuring unfavorable when the hose is wound up for the user's hand.
  • the production of a tube surface from two materials with different grip is possible in a particularly advantageous manner in the proven extrusion method by subdividing into partial nozzles, in a manner known per se from extrusion methods, an extrusion die which produces a jacket layer closed around the longitudinal axis. through which different materials are extruded simultaneously.
  • the different materials for the first region and the second region are advantageously such that, in the case of simultaneous or successive extrusion of the two materials by partial nozzles of an extrusion nozzle arrangement, an intimate material connection results between abutting regions of the different materials.
  • This can be achieved in particular advantageously in that both materials have a chemically identical composition, in particular in each case are formed at least predominantly by PVC, and essentially have only different degrees of hardness of a material hardness typically measured as Shore hardness. Typically, a material with lower Shore hardness shows better grip than a material with higher Shore hardness.
  • First and second area may also be separated by a gap in the circumferential direction and / or in the longitudinal direction.
  • Different degrees of hardness with chemically identical composition of the at least predominant material portion of the different materials of the first and second surface area for example, by additions to the materials, for example so-called known plasticizers to the material of the first area and / or by polymerization of the different materials with different Chain lengths of the polymerization can be achieved.
  • the first region advantageously occupies an area fraction of less than 40%, in particular less than 30%, preferably less than 20% of the total hose surface.
  • the first region is advantageously designed in the form of at least one longitudinally continuous strip.
  • the strip in its circumferentially measured about the longitudinal axis of the hose strip width in the longitudinal direction between see a maximum strip width and a minimum strip width vary, so that longitudinal sections of larger strip width and longitudinal sections smaller strip width in the longitudinal direction alternately follow one another.
  • the sequence of variation of the strip width preferably forms a longitudinally periodic pattern.
  • An increased grip of the hose is given in the strip width varying in the longitudinal direction of a strip-shaped first region, in particular in longitudinal sections of maximum stripe.
  • the hose can be cut in any conventional manner by the user at any point, so that the user can even put a hose end to which a connection part is connected to the hose through a section through the hose so that a preferred position a longitudinal section with maximum strip width relative to the connecting part results.
  • the period length a longitudinally periodic structure of a strip of variable stripe width is advantageously at least 20 cm and not more than 1 m.
  • the maximum strip width is advantageously at most 120 °, in particular at most 90 °, preferably at most 60 °, as the angular region around the longitudinal axis of the hose.
  • the maximum strip width is advantageously at least 15 °, in particular at least 20 ° about the longitudinal axis.
  • the first region contains at least two strips spaced apart in the circumferential direction.
  • the plurality of strips are advantageously evenly distributed around the circumference of the tube.
  • exactly two strips are provided, which are arranged offset by 180 ° about the longitudinal axis against each other.
  • the sections of maximum strip width are preferably provided for both strips in the same longitudinal regions, so that there is a particular increase in the overall grip through the first region in these longitudinal regions.
  • the strip sections of maximum strip width can also be staggered between the two strips in the longitudinal direction with respect to each other, whereby an improved grip is uniform over the entire hose path.
  • the first tube section may be printed in an advantageous embodiment, wherein the imprint may in particular contain a provider identification and / or a type of hose identification. In another embodiment, such an identification can also be given by an optical structure under the cladding layer instead of an imprint on the surface of the first region.
  • the tube may contain other stripe structures for other functions.
  • Fig. 1 is an oblique view of a preferred embodiment of a
  • FIG. 3 4 cross sections through FIG. 3 at different longitudinal positions, FIG. 4
  • Fig. 6 shows a detail of another embodiment.
  • Fig. 1 shows an oblique view of a portion of a garden hose according to the invention with a tube end attached to the hose hose coupling SK.
  • the hose coupler has in per se a conventional manner by the hose end in Fig. 1 hidden and projecting into the interior of the hose connecting piece and a plurality of the hose outside annularly surrounding retaining claws HK with a toothing.
  • the retaining claws HK are radial with respect to the longitudinal axis LA of the hose and are swiveled radially when tightening a union nut UM, which is screwed onto a thread of the main body of the hose coupling, and into the hose surface.
  • Such hose coupling parts or other connecting parts with such a fastening principle are generally in use and are known, for example, as Gardena OGS systems.
  • the tube shown in FIG. 1 also has a radially multi-layered construction with an inner jacket layer, a fabric insert GE and an outer jacket layer in a manner which is likewise known.
  • the peculiarity of the present invention lies in the structure of the outer cladding layer.
  • Hose parallel longitudinal LR viewed.
  • Fig. 2 shows schematically two cross sections through the hose shown in Fig. 1 at different longitudinal positions in the longitudinal direction LR, wherein Fig. 2 (A) shows a section at the longitudinal position 2A and Fig. 2 (B) shows a section at the longitudinal position 2B.
  • the relative radial dimensions of the individual jacket layers of the hose construction are not to scale in FIG. 2.
  • the layer thicknesses of the cladding layers and an intermediate layer ZS are chosen to illustrate the invention substantially thicker than corresponds to the relative dimensions of a real hose.
  • the inner jacket layer M1 of the hose assembly is formed by a homogeneous first material, which typically consists at least predominantly of a thermoplastic, in particular PVC.
  • the fabric insert is shown in FIG. 2 as an intermediate layer ZS, wherein the intermediate layer ZS either consists solely of the fabric layer forming a stitch system or, in a preferred embodiment, an additional thermoplastic material, wel
  • the fabric insert tightly encloses and serves to fix the yarn strands of the fabric insert may contain.
  • the second cladding layer following radially on the intermediate layer ZS with the fabric insert is made up of a plurality of different materials which form sections of the outer cladding layer which follow each other without gaps in the circumferential direction.
  • the outer cladding layer may also be radially divided in itself.
  • the various materials of the cladding layer are advantageously chosen so that they are in a common process step of an extrusion process with a circumferentially in extrusion
  • Partial nozzle divided extrusion die can be produced and that connect the different materials at the substantially radially extending interfaces between circumferentially sequentially different materials permanently gapless and stable to a closed second meten coat layer.
  • the different materials may in particular consist at least predominantly of chemically identical materials, in particular PVC, but differ in other material properties.
  • the setting of different material properties can be achieved in particular by different admixtures and / or by different borrowed mean chain lengths in a polymerization for the preparation of the starting material of the extrusion.
  • a second material M22 forming the largest surface portion on the outer surface of the second cladding layer is provided, which is transparent in the example outlined and through which the fabric insert in the intermediate layer ZS is visible.
  • this second material there should be a grip on a user's hand in the presence of a moisture film between the surface of the hose and the user. zerhand pleasant, which is hereinafter referred to as lower grip.
  • this transparent second material is interrupted by a first strip S1 of a first material M21 in a longitudinal section L1 1 and a fourth material M24 in a longitudinal section L12.
  • the longitudinal sections L1 1 and L12 are assumed to be periodically repeating in the longitudinal direction LR, so that there is a longitudinally continuous strip with varying strip width measured in the circumferential direction, in particular as an angle.
  • the strip of periodically repeated longitudinal sections L1 1, L12 made of first material M21 and fourth material M24 is assumed to be intransparent in the example according to FIG.
  • the transitions between longitudinal sections L1 1 and L12 advantageously form stepless, sliding transitions with gradual variation of the strip width.
  • the first material M21 has, in contrast to the second material M22 with respect to a user's hand in the presence of moisture on a subsequently referred to as a higher grip grip.
  • the first material M21 and the fourth material M24 are identical, so that a material-homogeneous, continuous in the longitudinal direction and varying in width strips of the first material results.
  • a plurality of strips S3 of a third material M23 may be provided, in which a relief structure RS of the tube surface, in particular in the form of a rib structure with circumferentially extending ribs, which form a succession of elevations and depressions in the longitudinal direction, may be formed.
  • the relief structure in the strip of the third material M23 can particularly advantageously serve to produce an improved positive anchoring between the retaining claws HK and the tube surface, in particular in the form of a positive engagement of the teeth of the toothed retaining claws in the relief structure, whereby the attachment of the connecting part can be easily improved at the hose end.
  • the third material M23 advantageously has a higher Shore hardness for such an effect than the surrounding second material M22.
  • the maximum strip width characterized by the angle W21 is advantageously at most 120 °, in particular at most 90 °, preferably at most 60 °.
  • the maximum strip width as angle W21 is advantageously at least 15 °, in particular at least 25 °.
  • a plurality of first strips S1 are arranged in longitudinal sections L1 1 of the first material M21 spaced apart in the circumferential direction, wherein the arrangement is preferably rotationally symmetrical about the central longitudinal axis LA.
  • exactly two are provided by 180 ° against each other rotated around the longitudinal axis arranged strips provided, wherein the maximum strip width corresponding to the longitudinal sections L1 1 for both strips in the longitudinal direction at the same positions. This results in longitudinally spaced successive longitudinal sections L1 1 with particularly good grip. Due to the restriction in the longitudinal direction LR on spaced longitudinal sections L1 1 with such increased grip is at the same time on average good lubricity of the hose through given the user's hand, for example, during a winding process.
  • the proportion of a longitudinal section L1 1 at the period length of the strip of varying width given by the sum of L1 1 and L 12 is advantageously not more than 60%, in particular not more than 40%, preferably not more than 30%.
  • other relative lengths of the longitudinal sections L1 1, L12 are shown merely for the purpose of illustrating the wide strip section.
  • the absolute length of a longitudinal section L1 1 is advantageously at least 5 cm, in particular at least 10 cm.
  • the absolute length of a longitudinal section L1 1 is advantageously at most 30 cm, in particular at most 20 cm.
  • the strip width of the first strip S1 of the fourth material M24 is reduced to a minimum strip width, which corresponds to a section through FIG Hose is characterized at the longitudinal position 2B of FIG. 1.
  • the minimum strip width corresponding to the angle W24 is advantageously at least 5 ° about the longitudinal axis LA.
  • the minimum strip width corresponding to the angle W24 is advantageously not more than 20 °, in particular not more than 15 °.
  • the outer jacket layer radially following the intermediate layer ZS with the tissue is the predominant one area proportion the tube surface forming second material M32, which in turn is shown in Fig. 3 as transparent, provided.
  • the tube surface formed by this second material M32 is interrupted several times by strips of other materials that preferably pass continuously in the longitudinal direction.
  • a strip which is continuous in the longitudinal direction and has a width which varies in its longitudinal direction is again provided which is formed in a region of maximum strip width by a first material M31 which has a high grip for a user's hand in the presence of moisture.
  • this width-varying strip in the example sketched has a relief structure in the form of circumferentially extending ribs which form elevations and / or depressions against a circular cylindrical surface defined by the surface of the second material M32.
  • a fourth material M34 is assumed, which may be identical to or even harder than the first material.
  • Such a rib structure is further provided on further strips of a third material M33.
  • These strips of the third material M33 are formed in the example shown as a strip with unchanged width in the longitudinal direction.
  • the relief structure on the strips of the third material M33 can be given over its entire length or only in longitudinal sections in which the relief structure is also present on strip sections of a fourth material M34.
  • the relief structure can form immediately elevations and / or depressions on the tube surface.
  • the third material M33 may have a higher Shore hardness than the first material M31 and / or the second material M32. This also has a ribbed structure
  • the fourth material M34 can likewise have a greater Shore hardness than the first material M31.
  • the rib structure in the fourth material M34 is recessed against a cylinder jacket surface defined by the surface of the second material M32 and covered by a material having a low Shore hardness.
  • a strip of the third material M32 through the first material M31 which already for reasons of higher grip advantageously a lower Shore hardness than the second material M32, be covered.
  • An overlap of the relief structure can be provided both in the strip with varying width in the longitudinal direction as well as in the strip of the third material M33 with constant width in the longitudinal direction in the example.
  • a concealed relief structure of a material with a greater Shore hardness, which is covered by a material with a lower Shore hardness can also be provided in the hose shown in Fig. 1, in which in addition to the strips of the third material M23 also under the lower material Shore hardness having first material M21 may be provided at least in the areas of small strip width a relief structure.
  • Fig. 4 shows schematically a section through a hose according to Fig. 3, in which in turn an inner cladding layer M1 is surrounded by a tissue-containing intermediate layer ZS.
  • the outer jacket layer is subdivided in the circumferential direction in an analogous manner to FIG. 2 into a plurality of regions made of different materials.
  • the majority of the surface forming second material M32 is interrupted by a plurality of strips of the first, fourth and third material M31, M34, M33, wherein the sectional plane for the Fig. 4 in a range of maximum stripe width of Strip is made of the first material M31 and therefore the fourth material M34 in Fig. 4 does not appear.
  • the maximum strip width of the strip of the first material M31 is denoted by the angle W31
  • the strip width of the strip of the third material M33 assumed unchanged in the longitudinal direction is denoted by the angle W33.
  • the statements on the exemplary embodiment according to FIGS. 1 and 2 apply analogously.
  • FIG. 5 shows a cross section through a tube, in which three first strips of a first material M51 arranged offset in the circumferential direction by 120 ° relative to one another are provided, which are embedded in the circumferential direction without gaps in regions of a second material M52 are such that the strips of the first material M51 and the regions of the second material M52 form a circumferentially closed shell layer.
  • an additional cladding layer MZ is extruded via the intermediate layer ZS, wherein this additional cladding layer MZ is formed circumferentially closed around the longitudinal axis is.
  • the cladding layer with the first material M51 for the first strips and with the second material M52 between the first strips are applied to the further cladding layer MZ in a common extrusion step.
  • an opaque table structure in particular by printing or by applying a thin film, are produced, which is visible by transparent design of at least one of the materials M51, M52 visible to a user and at the same time reliably protected against abrasion.
  • the material with which such an optical structure is produced is chosen so that in turn a good and long-term stable connection of the optical structure between them enclosing materials arises.
  • the materials M51, M52 are again selected in the example according to FIG. 5 such that the first material M51 has a significantly higher grip against a user's hand than the second material M52.
  • the first strips of the first material M51 have a width corresponding to an angle W51 of approximately 60 °.
  • the strip width advantageously reduces, as explained already with regard to other exemplary embodiments, to a substantially smaller angle with respect to W51.
  • this results in a circumferential portion of approximately 50% for the material M51 with the higher grip compared to M52.
  • This peripheral portion is reduced substantially in longitudinal areas with a minimum strip width and is advantageously not more than 20% in longitudinal areas with minimal strip width.
  • Fig. 6 shows an embodiment in which a cladding layer of a first material M61 and a second material M62 is applied by extrusion to the intermediate layer, wherein the second material M62 a the outer surface of the intermediate layer ZS completely covering and closed around the longitudinal axis of the hose circulating Layer forms, in the outwardly facing side of the second material M62 but a trench structure G6 is generated, in which a strip of material M61 rests.
  • the first material M61 in the circumferential direction is not directly adjacent to the second material M62, but is separated from the second material M62 by gaps SU in the circumferential direction.
  • the first material M61 and the second material M62 may be extruded both in a single extrusion step with a correspondingly split-nozzle extrusion die assembly and in successive stages.
  • the first material M61 in turn has a much higher grip against a user's hand than the material M62.
  • hose assemblies explained in the various exemplary embodiments can also be combined with one another in a combination other than explicitly shown with reference to the exemplary embodiments.
  • individual cladding layers may be divided in the circumferential direction and / or in the radial direction.
  • Layers or partial layers can deviate from a rotationally symmetrical ring shape or segment cutouts from such rotationally symmetrical ring shapes and, in particular, as shown in the example according to FIG. 6, can also have stepped outer surfaces.

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

Abstract

L'invention concerne un tuyau d'arrosage présentant un axe longitudinal (LA) s'étendant dans le sens longitudinal (LR). La surface présente au moins une première zone superficielle (L11) et une seconde zone superficielle (L12) et la première zone (L11) présente une meilleure aptitude à la préhension en termes de main d'utilisateur que la seconde zone (L12):
PCT/EP2012/073257 2011-11-22 2012-11-21 Tuyau d'arrosage WO2013076155A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011055607 2011-11-22
DE102011055607.9 2011-11-22

Publications (1)

Publication Number Publication Date
WO2013076155A1 true WO2013076155A1 (fr) 2013-05-30

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ID=47227790

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/073257 WO2013076155A1 (fr) 2011-11-22 2012-11-21 Tuyau d'arrosage

Country Status (1)

Country Link
WO (1) WO2013076155A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3825036A (en) * 1971-05-19 1974-07-23 Creators Ltd Reinforced plastics tubes
US4410012A (en) * 1980-10-20 1983-10-18 The United States Of America As Represented By The Secretary Of The Navy Radially compliant acoustic line array hose
DE3929051C1 (fr) * 1989-09-01 1990-04-26 Kunststoffwerk Voerde Hueck & Schade, 5828 Ennepetal, De
DE19532242C1 (de) * 1995-08-31 1996-10-02 Kunststoffwerk Voerde Hueck & Extrudierter, knickfester durchsteckmontierbarer Abfluß- bzw. Lüftungsschlauch zur Verlegung in Hohlräumen von Kraftfahrzeug-Karosserien
US6214268B1 (en) * 1997-02-18 2001-04-10 Tigers Polymer Corporation Blow-molded hoses and apparatuses for producing the same
DE102005060221A1 (de) * 2005-12-16 2007-07-05 Rehau Ag + Co. Schlauch
FR2922291A1 (fr) * 2007-10-15 2009-04-17 Hozelock Tricoflex Soc Par Act Tuyau decore et son procede de fabrication
EP2233812A1 (fr) * 2009-03-25 2010-09-29 Fitt Spa Tuyau flexible avec motifs ornementaux, procédé pour sa fabrication et usine pour décorer des tuyaux flexibles

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3825036A (en) * 1971-05-19 1974-07-23 Creators Ltd Reinforced plastics tubes
US4410012A (en) * 1980-10-20 1983-10-18 The United States Of America As Represented By The Secretary Of The Navy Radially compliant acoustic line array hose
DE3929051C1 (fr) * 1989-09-01 1990-04-26 Kunststoffwerk Voerde Hueck & Schade, 5828 Ennepetal, De
DE19532242C1 (de) * 1995-08-31 1996-10-02 Kunststoffwerk Voerde Hueck & Extrudierter, knickfester durchsteckmontierbarer Abfluß- bzw. Lüftungsschlauch zur Verlegung in Hohlräumen von Kraftfahrzeug-Karosserien
US6214268B1 (en) * 1997-02-18 2001-04-10 Tigers Polymer Corporation Blow-molded hoses and apparatuses for producing the same
DE102005060221A1 (de) * 2005-12-16 2007-07-05 Rehau Ag + Co. Schlauch
FR2922291A1 (fr) * 2007-10-15 2009-04-17 Hozelock Tricoflex Soc Par Act Tuyau decore et son procede de fabrication
EP2233812A1 (fr) * 2009-03-25 2010-09-29 Fitt Spa Tuyau flexible avec motifs ornementaux, procédé pour sa fabrication et usine pour décorer des tuyaux flexibles

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