WO2011105216A1 - 流体輸送用可撓管および流体輸送用可撓管の製造方法 - Google Patents
流体輸送用可撓管および流体輸送用可撓管の製造方法 Download PDFInfo
- Publication number
- WO2011105216A1 WO2011105216A1 PCT/JP2011/052746 JP2011052746W WO2011105216A1 WO 2011105216 A1 WO2011105216 A1 WO 2011105216A1 JP 2011052746 W JP2011052746 W JP 2011052746W WO 2011105216 A1 WO2011105216 A1 WO 2011105216A1
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- Prior art keywords
- layer
- multilayer tape
- flexible tube
- resin
- tape
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims description 10
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
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- 230000032258 transport Effects 0.000 description 14
- 239000003921 oil Substances 0.000 description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
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- 239000013535 sea water Substances 0.000 description 8
- 238000005452 bending Methods 0.000 description 7
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 6
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
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- 229920000181 Ethylene propylene rubber Polymers 0.000 description 2
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
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Images
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
- F16L11/081—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire
- F16L11/082—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire two layers
-
- 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- 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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- 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
- F16L11/081—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire
- F16L11/083—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire three or more layers
-
- 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
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
-
- 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
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/582—Tearability
- B32B2307/5825—Tear resistant
-
- 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
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
-
- 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
- B32B2597/00—Tubular articles, e.g. hoses, pipes
Definitions
- the present invention relates to a fluid transport flexible tube for transporting oil and gas produced from a submarine oil and gas field and the like, and a method for manufacturing a fluid transport flexible tube.
- a flexible pipe for transporting fluid for example, a stainless steel interlock pipe excellent in flexibility and excellent in external pressure resistance and lateral pressure resistance during laying is used in the innermost layer, and an oil
- a plastic inner pipe with excellent gas and liquid tightness is provided, and a metal internal pressure reinforcement layer as an internal pressure reinforcement and a metal axial force reinforcement layer as an axial reinforcement are provided on the outer periphery, and the outermost layer is provided as an outer layer.
- a plastic sheath is provided as a waterproof layer (Patent Document 1).
- oil gas components pumped from the sea bottom may contain corrosive gas such as hydrogen sulfide, carbon dioxide or supercritical carbon dioxide.
- corrosive gas such as hydrogen sulfide, carbon dioxide or supercritical carbon dioxide.
- the plastic layer is deteriorated by such a corrosive gas, and the metal reinforcing layer may be corroded by the corrosive gas that has permeated the plastic layer.
- the present invention has been made in view of such problems, and is excellent in flexibility, and does not cause deterioration or corrosion in the metal reinforcing layer due to the corrosive gas contained in the fluid flowing inside. It is an object of the present invention to provide a fluid transport flexible tube and a method for manufacturing the fluid transport flexible tube, the effect of which is not reduced by repeated bending fatigue.
- the first invention includes a flexible tubular body, a shielding layer provided on the outer peripheral side of the tubular body, and a reinforcing layer provided on the outer peripheral side of the shielding layer.
- a protective layer provided on the outer peripheral side of the reinforcing layer, and a resin between the shielding layer and the tubular body and / or between the shielding layer and the reinforcing layer.
- a layer is formed, and the shielding layer is formed of a multilayer tape in which a metal layer is sandwiched between resins, and the metal layer is divided at least partially in a cross section of the multilayer tape. It is a flexible tube for fluid transportation.
- a water shielding layer may be further formed between the reinforcing layer and the protective layer, and the water shielding layer may be formed of a multilayer tape having a metal layer sandwiched between resins.
- the division part of the metal layer may be formed at a predetermined angle with respect to the longitudinal direction of the multilayer tape in the plane of the multilayer tape.
- the divided portion includes a plurality of metal members that constitute the metal layer, and indicates the vicinity of a boundary portion between the plurality of metal members. That is, when the adjacent metal members are completely separated from each other, the divided portion refers to the separated portion, and when the adjacent metal members are in contact with each other or overlap each other, the contact portion Or it shall refer to the overlapping part.
- the angle formed by the longitudinal direction of the multilayer tape and the divided portion of the metal layer substantially coincides with the winding angle of the multilayer tape with respect to the circumferential direction of the fluid transport flexible tube, and the multilayer tape is wound.
- the extending direction of the divided portion substantially coincides with the circumferential direction of the fluid transporting flexible tube.
- the metal layer may be formed from a plurality of metal foils, and the divided portion may be a boundary between adjacent metal foils, the metal layer may be formed from a plurality of metal wires, and the divided portion may be The boundary part between the adjacent metal wires may be used.
- the resin part of the multilayer tape may be made of a resin having compatibility with the resin layer and having a lower melting point than the resin layer.
- at least the surface of the multilayer tape may be made of a rubber material, and the rubber material may be in close contact with the resin layer.
- the multilayer tape is spirally wound around the flexible tube for fluid transportation so that the ends in the width direction do not overlap each other, and covers the gap between the multilayer tapes on the inner layer side, Two or more layers of the multilayer tape may be wound, and the multilayer tape is spirally wound around the flexible tube for fluid transportation so that end portions in the width direction of the multilayer tape wrap around each other. May be attached.
- the multilayer tape is wound so that the longitudinal direction of the multilayer tape substantially coincides with the axial direction of the fluid transport flexible tube, and the width direction of the multilayer tape is the circumferential direction of the fluid transport flexible tube.
- the lap portion of the multilayer tape may be formed so as to extend in the axial direction of the fluid transport flexible tube.
- a shielding layer is provided between the tubular body and the resin layer, and the shielding layer is constituted by a multilayer tape in which a metal layer is sandwiched between resins. For this reason, the corrosive gas from the inner tube side is reliably shielded by the metal layer. Further, since the metal layer is sandwiched between the resins, the metal layer is not torn or bent when the shielding layer is constructed. For this reason, a shielding layer can be constructed reliably. Further, the metal layer does not damage the inner tube body, and it is possible to prevent a decrease in strength due to wear or fatigue of the metal layer or a decrease in strength of the tube body.
- a water shielding layer is provided between the reinforcing layer and the protective layer, and the water shielding layer is composed of a laminated film in which a metal film is sandwiched between resin films, seawater absorbed by the protective layer is impermeable to water. Water shielding is ensured by the metal film of the layer. For this reason, an internal reinforcement layer does not corrode.
- the shielding film can be reliably constructed without the metal film being torn or bent during construction of the shielding layer. Further, the internal reinforcing layer is not damaged.
- the multilayer tape (metal layer) can be deformed in the division direction of the divided portion when the multilayer tape is wound. For this reason, it can suppress that a multilayer tape becomes a hindrance of a deformation
- the deformation direction of the multilayer tape is not limited to the width direction of the multilayer tape, but at a predetermined angle direction. Can be directed to.
- the multilayer tape is The extending direction of the divided portion in the wound state can be made substantially coincident with the circumferential direction of the fluid transporting flexible tube.
- the traveling direction of the wave shape can be set as the tube axis direction, and therefore, a multilayer is formed with respect to the deformation direction when the fluid transport flexible tube is bent (the axial direction of the fluid transport flexible tube).
- the tape metal layer
- the tape has a large deformability and can secure high flexibility. Further, since the stress in the tube axis direction can be relieved by the wave shape, the fatigue life of the multilayer tape is also improved.
- the resin constituting the shielding layer is compatible with the resin layer and is made of a material having a melting point lower than that of the resin layer, the resin layer and the resin portion are heated when the resin layer is extruded and coated. They are integrated by fusion, and there is no risk of misalignment with respect to machine history such as bending and twisting.
- the surface of the multilayer tape is made of a rubber material, and the adhesion between the multilayer tape and the resin layer becomes unnecessary by bringing the rubber material and the resin layer into close contact. Therefore, when the flexible tube is used for a long period of time, it is possible to prevent the adhesive from deteriorating and forming a gap between the multilayer tape and the resin layer.
- high long-term durability can be obtained by using a material having excellent surface corrosion resistance such as stainless steel, aluminum, and clad steel for the metal layer.
- the winding direction of the multilayer tape may be spirally wound in the same direction or may be spirally wound in the opposite direction. In this way, the gap between the spirally wound tapes can be almost made up.
- the multi-layer tape is wound spirally so that the end portions in the width direction are wrapped, corrosive gas can be reliably shielded by forming the wrap portion.
- the multilayer tape is wound so that the longitudinal direction of the multilayer tape is substantially coincident with the axial direction of the fluid transport flexible tube and the width direction of the multilayer tape is the circumferential direction of the fluid transport flexible tube. Corrosive gas can be reliably shielded by wrapping the ends of the wound winding portions with the circumferential ends of the multilayer tape.
- a flexible tubular body is fed in the tube axial direction, a shielding layer is formed on the outer circumferential side of the tubular body, a reinforcing layer is formed on the outer circumferential side of the shielding layer, A flexible layer for fluid transportation in which a protective layer is extrusion-coated on the outer peripheral side, and a resin layer is further extrusion-coated between the shielding layer and the tube and / or between the shielding layer and the reinforcing layer.
- the shielding layer is formed of a multilayer tape in which a metal layer is sandwiched between resins, and the metal layer is divided at least partially in a cross section of the multilayer tape, In the plane of the multilayer tape, the divided portion of the metal layer is formed at a predetermined angle with respect to the longitudinal direction of the multilayer tape, and the longitudinal direction of the multilayer tape and the divided portion of the metal layer Of the multilayer tape with respect to the circumferential direction of the flexible tube for fluid transportation.
- the shielding layer is formed by wrapping the multilayer tape so that the extending direction of the divided portion is substantially coincident with the circumferential direction of the fluid transporting flexible tube substantially coincident with the tightening angle.
- the shielding layer by the multilayer tape in which the metal layer is sandwiched with the resin is provided on the outer peripheral side of the tubular body, and the metal layer has the divided portion in the cross section of the multilayer tape.
- the multilayer tape metal layer
- the multilayer tape can be stretched and deformed in the dividing direction.
- the division part of the metal layer is formed at a predetermined angle with respect to the longitudinal direction of the multilayer tape, the angle formed by the longitudinal direction of the multilayer tape and the division part of the metal layer, and the circumferential direction of the flexible tube for fluid transportation
- the winding angle of the multi-layer tape is substantially the same as the winding direction of the multi-layer tape. It is possible to ensure high flexibility that the multilayer tape (metal layer) can follow the deformation direction when the flexible tube is bent (the axial direction of the flexible tube for fluid transportation).
- a flexible pipe for fluid transportation that is excellent in flexibility and does not cause deterioration or corrosion in a plastic layer or a metal reinforcing layer due to a corrosive gas contained in a fluid flowing through the inside.
- a manufacturing method of a flexible tube can be provided.
- the flexible tube for transporting fluid according to the present invention is provided with a shielding layer inside the tubular body, and the metal layer inside the shielding layer is divided in cross section, so that the stress concentration of the metal layer due to deformation can be reduced, It is possible to achieve both high flexibility and improvement of long-term reliability of the flexible tube for fluid transportation by improving fatigue characteristics.
- FIG. 4D is a sectional view taken along line DD of FIG. It is a figure which shows the winding method of the multilayer tape 17, (a) is a general view, (b) is the E section enlarged view of (a).
- FIG. The figure which shows the effect of the shielding layer.
- FIG. 1A and 1B are diagrams showing a flexible tube 1, in which FIG. 1A is a perspective view and FIG. 1B is a cross-sectional view.
- the flexible tube 1 is mainly composed of an interlock tube 3, which is a tubular body, a resin layer 5, a shielding layer 7, an internal pressure-resistant reinforcing layer 9, an axial force reinforcing layer 11, a protective layer 13, and flooring layers 15a and 15b. Is done.
- the interlock tube 3 is located in the innermost layer of the flexible tube 1 and is made of stainless steel having excellent buckling strength against external pressure and good corrosion resistance.
- the interlock pipe 3 is formed by forming a tape into a S-shaped cross section and meshing and connecting with each other at the S-shaped portion, and has flexibility.
- any other form of pipe can be used as long as it has the same flexibility and excellent buckling strength.
- a resin layer 5 is provided on the outer peripheral side of the interlock pipe 3.
- the resin layer 5 shields the fluid flowing through the interlock pipe 3.
- the resin layer 5 for example, nylon or polyvinyldenfluoride (PVDF) that can withstand high temperatures of 90 ° C. or more and has excellent oil resistance can be used.
- the outer peripheral side of the interlock pipe 3 means the outer side of the interlock pipe 3 in a cross section, and includes that there is another layer structure between the interlock pipe 3 and the resin layer 5. .
- peripheral side of the interlock pipe 3 in referred to as “periphery”, but it is needless to say that similarly, those having other layer structures between the respective layers are included.
- a floor layer 15a is provided between the interlock pipe 3 and the resin layer 5 as necessary.
- the floor layer 15a is a layer for leveling the uneven shape on the outer periphery of the interlock pipe 3 and can be deformed following the flexibility of the interlock pipe 3. That is, the floor layer 15a has a certain thickness, such as a non-woven fabric, and serves as an uneven cushion on the outer periphery of the interlock tube 3.
- the floor layer is provided as necessary, and in the following description, the case where the floor layer is provided will be described, but it is not always necessary and can be omitted. Therefore, in the following figures (the figures other than FIG. 1A), the illustration of the floor layer is omitted.
- a shielding layer 7 is provided on the outer periphery of the resin layer 5.
- the shielding layer 7 shields corrosive gas and supercritical substance from the fluid flowing in the interlock pipe 3.
- the shielding layer 7 is formed by a multilayer tape described later. The configuration of the shielding layer 7 will be described later in detail.
- the internal pressure-resistant reinforcing layer 9 is a reinforcing layer against the internal pressure of the fluid flowing mainly in the interlock pipe 3.
- the internal pressure proof reinforcing layer 9 is formed, for example, by being wound at a short pitch so that metal tapes having a cross-sectional C shape or a Z-shaped cross section face each other and overlap each other in the axial direction.
- the internal pressure reinforcement layer 9 has a configuration in which a metal tape is wound at a predetermined pitch as described above, and can follow bending deformation and torsional deformation of the interlock pipe 3.
- An axial force reinforcing layer 11 is provided on the outer periphery of the internal pressure resistant reinforcing layer 9.
- the axial force reinforcing layer 11 is a reinforcing layer for mainly suppressing the interlock pipe 3 from being deformed (extended) in the axial direction of the flexible pipe 1.
- the axial force reinforcing layer 11 is formed by alternately winding two layers of metal reinforcing strips at a long pitch. The axial force reinforcing layer 11 can be deformed following the flexibility of the interlock 3.
- the flooring layer 15b which is a resin tape made from polyethylene etc. between the internal pressure-proof reinforcement layer 9 and the axial force reinforcement layer 11 as needed.
- a floor layer 15c which is a polyethylene resin tape, may be provided between two layers of reinforcing strips that are spirally wound in opposite directions. The floor layers 15b and 15c prevent the reinforcing members from being worn by rubbing when the reinforcing members follow the deformation of the flexible tube 1. Even in this case, it is said that the axial force reinforcing layer 11 is provided on the outer peripheral side of the internal pressure resistant reinforcing layer 9 regardless of the presence or absence of the floor layer.
- the internal pressure proof reinforcing layer 9 and the axial force reinforcing layer 11 are collectively referred to as a reinforcing layer.
- a floor layer 15d is provided on the outer periphery of the axial force reinforcing layer 11 as necessary.
- the floor layer 15 d is a layer for leveling the uneven shape on the outer periphery of the axial force reinforcing layer 11 and can be deformed following the flexibility of the interlock pipe 3. Since the floor layer 15d has the same configuration as the floor layer 15a, description thereof is omitted.
- a protective layer 13 is provided on the outer periphery of the floor layer 15d.
- the protective layer 13 is a layer for preventing seawater or the like from entering the reinforcing layer, for example.
- the protective layer 13 may be made of non-crosslinked resin such as nylon, polyethylene, polyarylate resin or polyamide synthetic resin. As described above, each layer constituting the flexible tube 1 follows the bending deformation of the flexible tube 1 and has flexibility.
- the flexible tube 1 is manufactured as follows.
- the interlock pipe 3 manufactured in advance is sent in the axial direction, and a floor tape is wound around the interlock pipe 3 as necessary to form the floor layer 15a.
- the interlock pipe 3 on which the floor layer 15a is formed is sent to the extruder, and the extruder pushes the resin to the outer peripheral portion to form the resin layer 5.
- a multilayer tape manufactured in advance is supplied from the multilayer tape feeder.
- the multilayer tape is spirally wound, or is supplied so that the longitudinal direction of the multilayer tape is substantially the same as the axial direction of the interlock pipe 3, is formed in a forming machine, and is longitudinally wound. .
- the shielding layer 7 is formed.
- the feeding speed from the feeder of the multilayer tape is the speed obtained by superimposing the winding speed when the pipe is considered to be stationary in the extrusion speed of the interlock pipe 3 in both the spiral winding and the longitudinal winding in the axial direction. Need to be sent out.
- a reinforcing layer is formed on the outer peripheral side of the shielding layer 7 by a reinforcing tape winding machine, and a protective layer 13 is formed on the outermost peripheral part by an extruder, and is wound up to a predetermined length.
- the flexible tube 1 is manufactured.
- FIG. 2 is a view showing the multilayer tape 17
- FIG. 2 (a) is a perspective view
- FIG. 2 (b) is a view in the direction of arrow A in FIG. 2 (a)
- a sectional view of the multilayer tape 17. is there.
- the multilayer tape 17 includes a metal layer 19 and a resin coating portion 21.
- the metal layer 19 is sandwiched between the resin coating portions 21.
- the metal layer 19 is thin and easy to process on the film, and any metal layer 19 having excellent corrosion resistance may be used.
- any metal layer 19 having excellent corrosion resistance may be used.
- stainless steel, aluminum, and clad steel clad with a material having good corrosion resistance on the outer surface can be used.
- the metal layer 19 has a thickness of about 0.05 mm, for example, and the entire multilayer tape 17 may have a thickness of about 0.2 to 0.3 mm, for example.
- the resin coating portion 21 is a resin member and can prevent the metal layer 19 from being bent, torn, or wrinkled when the shielding layer 7 is constructed.
- the material of the resin coating portion 21 will be described later.
- the metal layer 19 is composed of a metal foil 20 that is divided into a plurality of portions in the width direction in the cross section, and has divided portions 23.
- a metal layer 19 may be formed by extrusion-coating a resin on a plurality of metal films, or may be installed in a corresponding mold to integrate the resin by injection. Or the resin member and metal film which were each formed separately and which have a corresponding shape may be integrated by well-known techniques, such as adhesion and pressure bonding. Moreover, a metal layer can also be formed by vapor deposition etc. on the resin member masked on the surface beforehand.
- the metal layer 19 is divided in the width direction and has a divided portion 23. That is, in the cross-sectional example shown in FIG. 2B, there are four divided portions 23 except for the left and right end portions.
- the division part 23 may be formed completely apart as shown in the figure, or the ends of each may be in contact with each other. That is, in the cross section of the multilayer tape, at least a part is divided and the metal foils 20 may overlap each other at the divided portion as long as the plurality of metal foils 20 are formed in parallel.
- FIG. 3 (a) is a plan view of the multilayer tape 17
- FIG. 3 (b) is a cross-sectional view taken along the line BB of FIG. 3 (a)
- FIG. 3 (c) is a cross-sectional view of FIG.
- FIG. 3D is a sectional view taken along the line C
- FIG. 3D is a sectional view taken along the line DD in FIG.
- the dotted line in the figure represents the position of the dividing unit 23.
- the division part 23 is formed at a predetermined angle with respect to the longitudinal direction of the multilayer tape 17. That is, in the example of FIG. 3A, the dividing portion 23 is formed obliquely by an angle K with respect to the longitudinal direction of the multilayer tape 17.
- the dividing position differs depending on the cross-sectional position.
- the leftmost dividing portion 23 in FIG. 3B is continuously shifted in the right direction in the figure as it goes to FIG. 3C and FIG. It is formed.
- FIG. 4A is a view showing a method of spirally winding the multilayer tape 17 around the outer periphery of the resin layer 5, and FIG. 4B is an enlarged view of a portion E in FIG. 4A.
- the multilayer tape 17 is wound in a spiral shape (in the direction of arrow F in the figure).
- the resin layer 5 is extrusion coated, the multilayer tape 17 is supplied and wound in the subsequent process.
- FIG. 5 is an axial sectional view showing a state in which the multilayer tape 17 is wound around the outer periphery of the resin layer 5.
- the multilayer tape 17 is formed on the outer periphery of the resin layer 5 with a slight gap so that the end portions in the width direction of the multilayer tape 17 do not overlap each other (so as not to wrap).
- the multilayer tape 17 may be wound around the upper layer (outer layer) in the same manner by shifting the winding position so as to cover the gap between the lower layer (inner layer) multilayer tape 17 on the outer periphery.
- the lower layer (inner layer) tape and the upper layer (outer layer) tape are wound in opposite directions because the tension applied to the interlock pipe at the time of winding is balanced.
- the multilayer tape 17 may be wrapped and wrapped so that the end portions in the width direction of the multilayer tape 17 overlap each other. Even if it winds by any method of FIG. 5, the multilayer tape 17 can be wound in a shielding layer without gap.
- any known means such as adhesion or fusion can be used.
- the material of the resin coating portion 21 is not particularly limited, but may be a rubber material (for example, ethylene rubber, ethylene propylene rubber, silicon rubber, urethane rubber, butyl rubber, etc.). By doing in this way, the friction coefficient of the resin layer 5 and the resin coating
- a rubber material for example, ethylene rubber, ethylene propylene rubber, silicon rubber, urethane rubber, butyl rubber, etc.
- the resin coating part 21 whole is made of a rubber material
- the adhesiveness with the metal layer 19 is inferior.
- the resin coating part 21 it is good also considering the resin coating part 21 as a multilayer. That is, in the multilayer tape 17a shown in FIG. 6, the resin covering portion 21 is provided with a resin layer excellent in adhesiveness with the metal layer 19 in the inner layer, and the rubber portion 21a is formed only with the outer layer by a rubber material. Also good.
- H and the circumferential direction G of the flexible tube are perpendicular to each other.
- the angle formed by the winding direction I of the multilayer tape 17 with respect to the circumferential direction G of the flexible tube is J.
- the angle formed by the longitudinal direction I of the multilayer tape 17 and the divided portion 23 is K.
- the winding direction I of the multilayer tape 17 coincides with the longitudinal direction of the multilayer tape 17.
- the angle J formed by the winding direction I of the multilayer tape 17 and the circumferential direction G of the flexible tube, and the angle formed by the longitudinal direction I of the multilayer tape 17 and the dividing portion 23 should be substantially equal to K.
- the direction (stretching direction) in which the divided portion 23 is formed substantially coincides with the circumferential direction G of the flexible tube. That is, the winding angle (J) of the multilayer tape 17 is set in advance, and in the plan view, the multilayer tape 17 having the segment that is inclined at an angle (K) corresponding thereto is used.
- the extending direction can be made substantially coincident with the circumferential direction of the fluid transporting flexible tube.
- the angle (J) formed by the winding direction I and the circumferential direction G of the flexible tube and the angle (K) formed by the longitudinal direction I of the multilayer tape 17 and the wave crest 23 cause a slight deviation.
- the outer diameter of the interlock pipe is D
- the deviation in the axial direction per winding rotation when the tape is not completely parallel to the circumferential direction is expressed as D ⁇ ⁇ ⁇ tan (JK).
- the outer diameter D of the interlock pipe is 150 ⁇
- JK is 5 °
- tan5 ° 0.087
- the tape winding direction is shifted by about 41 mm
- the deviation per rotation is about 20 mm. Therefore, the angle deviation is preferably 5 ° or less.
- the amount of deviation with a deviation angle of 2.5 ° is about half of the above, which is more preferable.
- FIG. 7 is a view showing another embodiment showing a forming process when the multilayer tape 17 is wound around the interlock pipe 3 formed with the resin layer 5 by vertical winding.
- the multilayer tape 17 may be wound vertically as shown in FIG.
- the multilayer tape 17 is sent to the interlock pipe 3 so that the longitudinal direction of the multilayer tape 17 is substantially the same as the axial direction of the interlock pipe 3.
- both sides of the multilayer tape 17 are bent in a U shape so as to wrap the entire interlock pipe 3 (resin layer 5).
- the interlock pipe 3 (resin layer 5) is wrapped by the multilayer tape 17. That is, both end portions of the multilayer tape 17 are wrapped with the outer peripheral portion of the resin layer 5, and the resin layer 5 is wrapped with the multilayer tape 17. That is, the wrap portion 25 is formed along the axial direction of the interlock pipe 3.
- the shielding tape 7 may be formed by winding the multilayer tape 17 around the resin layer 5 by vertical winding.
- FIG. 8 is a view corresponding to FIG. 4, FIG. 8 (a) is a view showing a state in which the multilayer tape 17 is vertically wound around the outer periphery of the resin layer 5, and FIG. 8 (b) is a view shown in FIG. It is an enlarged view corresponding to b).
- the wrap portion 25 is formed so as to extend in the axial direction of the flexible tube (in the direction of arrow L in the figure).
- the axial direction H of the flexible tube and the circumferential direction G of the flexible tube are perpendicular to each other. Further, the longitudinal direction I of the multilayer tape 17 and the axial direction H of the flexible tube coincide with each other. Therefore, if the angle formed by the circumferential direction G of the flexible tube and the axial direction H of the flexible tube is J, J is approximately 90 degrees. Further, as described above, the angle K formed by the longitudinal direction I of the multilayer tape 17 and the divided portion 23 is also 90 °.
- the angle J (90 °) of the circumferential direction G of the flexible tube with respect to the winding direction I of the multilayer tape 17, the longitudinal direction I of the multilayer tape 17, and the dividing portion 23 By making the angle formed by K substantially coincide with K (90 °), the extending direction of the divided portion 23 can be made substantially coincident with the circumferential direction of the fluid transporting flexible tube.
- FIG. 9 is a view showing a state in which the flexible tube 1 is deformed.
- FIG. 9A when the flexible tube 1 is bent and deformed (in the direction of arrow M in the drawing), the bending outer periphery side (N portion in the drawing) of the flexible tube 1 becomes tensile deformation.
- FIG. 9B is a schematic diagram showing the state of the multilayer tape 17 in the N part of FIG. 9A.
- FIG.9 (b) is a figure which shows the state by which the multilayer tape 17 was spirally wound, for example.
- the multi-layer tape 17 wound around the portion also undergoes tensile deformation in the width direction and tries to follow the bending of the flexible tube 1 ( Arrow direction Q in the figure).
- the resin coating portion 21 can be easily deformed following the elastic deformability of the resin.
- the metal layer 19 is divided into a plurality of parts, the deformation can be easily followed by expansion / contraction of the divided part (change in the distance between the metal foils in the divided part).
- the dividing portion 23 is formed to extend in the circumferential direction of the flexible tube 1, the expansion / contraction deformation direction by the dividing portion corresponds to the axial direction of the flexible tube 1.
- the multilayer tape 17 shielding layer 7 can easily follow the deformation of the flexible tube 1 and deform. That is, the winding of the multilayer tape 17 having the metal layer 19 does not hinder the flexibility (deformation) of the flexible tube 1.
- FIG. 10A and 10B are cross-sectional views of the flexible tube 1
- FIG. 10A is an axial cross-sectional view
- FIG. 10B is an enlarged view of the multi-layer tape 17 constituting the shielding layer 7.
- fluid such as oil or gas flows in the interlock pipe 3.
- oil, gas, and the like may contain hydrogen sulfide, carbon dioxide, or supercritical carbon dioxide that is a corrosive gas.
- the resin layer 5 usually provided on the outer periphery of the interlock pipe 3 is in contact with the fluid. Further, the flow of corrosive gas from the interlock pipe 3 in the circumferential direction (in the direction of arrow O in the drawing) may permeate the resin layer 5.
- the shielding layer 7 is provided on the outer peripheral surface of the resin layer. Therefore, as shown in FIG. 10B, the shielding layer 7 shields the corrosive gas contained in the fluid in the inner metal layer 19 (in the direction of arrow P in the figure). That is, a part of the corrosive gas permeation path is shielded by the metal layer, and the traveling distance of the corrosive gas can be increased in the divided portions. Accordingly, the reinforcement layers (internal pressure resistant reinforcement layer 9 and axial force reinforcement layer 11) can suppress deterioration due to corrosive gas.
- the shielding layer 7 is provided on the outer periphery of the resin layer 5, fluid transportation in which the reinforcing layer is not deteriorated by the fluid flowing inside. A flexible tube can be obtained. Further, since the shielding layer 7 is composed of the multilayer tape 17 in which the metal layer 19 is sandwiched between the resin coating portions 21, the flow of the corrosive gas from the interlock pipe 3 side in the circumferential direction of the pipe body is caused by the metal layer 19. It is reliably shielded and the reinforcing layer does not deteriorate.
- the metal layer 19 is sandwiched between the resin coating parts 21, the metal layer 19 is not torn or bent when the shielding layer 7 is constructed, and the shielding layer 7 can be constructed with certainty. Furthermore, since the metal layer 19 does not directly contact the interlock pipe 3, the interlock pipe 3 is not damaged during manufacture.
- the multilayer tape 17 (metal layer 19) can be easily stretched and deformed in the division direction when the multilayer tape 17 is wound. is there.
- the division part 23 of the metal layer 19 is formed at a predetermined angle with respect to the longitudinal direction of the multilayer tape 17, the angle formed by the longitudinal direction of the multilayer tape 17 and the division part 23 of the metal layer 19, and the flexible tube
- the multilayer tape 17 (metal layer 19) easily follows the deformation direction when the flexible tube 1 is bent, and high flexibility can be ensured. Further, since the metal layer 19 is divided, the metal layer 19 can easily follow the deformation when the flexible tube is bent, and the stress concentration can be reduced. For this reason, local excessive stress is not given to the metal layer 19. Therefore, a long-term repeated bending fatigue characteristic can be improved, and a flexible tube for fluid transportation excellent in long-term reliability can be obtained.
- FIG. 11 is a diagram showing another embodiment of the shape of the metal layer 19 in the cross section of the multilayer tape.
- the shape of the metal layer 19 in the cross section of the multilayer tape is not limited to the above-described example, for example, the multilayered metal foil 20 as a multilayer tape 30 shown in FIG. Even in this case, the divided portions 23 are formed at a predetermined angle with respect to the longitudinal direction of the multilayer tape 30, thereby providing the same effect as the multilayer tape 17. The penetration path of the corrosive gas can be shielded more reliably.
- a metal wire 41 may be provided in addition to the metal foil 20 as in the multilayer tape 40 shown in FIG.
- the metal wires 41 may be in contact with each other.
- the division part 23 is between the metal wires 41. That is, the installation angle of the metal wire 41 with respect to the longitudinal direction of the multilayer tape 17 becomes the angle of the dividing portion 23. Even in this case, the division part 23 is formed at a predetermined angle with respect to the longitudinal direction of the multilayer tape, whereby the same effect as that of the multilayer tape 17 can be obtained.
- the metal wires 41 may be separated from each other as in the multilayer tape 40 shown in FIG. Even in this case, a part of the corrosive gas permeation path is shielded by the metal wire 41, and the distance that the corrosive gas can permeate in the divided portion can be increased.
- a division part is not restricted to these embodiment, What is necessary is just a form which can be expanded-contracted.
- the resin layer 5 may be formed on the outer peripheral side of the shielding layer 7. Even in this case, since hydrogen sulfide and the like are shielded by the shielding layer 7, it is possible to prevent hydrogen sulfide and the like from entering the reinforcing layer.
- the resin layers 5a and 5b may be formed on both sides (inner periphery and outer periphery) of the shielding layer 7. Even in this case, since hydrogen sulfide and the like are shielded by the shielding layer 7, it is possible to prevent hydrogen sulfide and the like from entering the reinforcing layer. That is, the resin layer may be formed on at least one of the inner peripheral side or the outer peripheral side of the shielding layer 7.
- a resin is used as the resin of the resin coating portion of the multilayer tape constituting the shielding layer 7.
- a resin having a melting point lower than that of the resin forming the layer 5 (5b) and having compatibility with the resin forming the resin layer 5 can be used.
- the resin coating part 21 and the resin layer 5 (5b) are compatible and the melting point of the resin coating part 21 is low, the resin layer 5 is formed when the resin of the resin layer 5 is pushed out to the outer peripheral side of the shielding layer 7. (5b) and the resin coating portion 21 are easily integrated with each other. For this reason, when the resin layer 5 (5b) is formed, there is no deviation between the shielding layer 7 and the resin layer 5 (5b), and when the flexible tube 1 is bent, the shielding layer 7 A part of will not be damaged.
- the resin covering portion 21 may be nylon 12 and the resin layer 5 (5b) may be nylon 11.
- the resin coating portion 21 (or the surface thereof) may be made of a rubber material.
- a water shielding layer 31 may be formed between the reinforcing layer (the floor layer 15 d) and the protective layer 13.
- the water shielding layer 31 has the same configuration as the shielding layer 7. That is, the multilayer films 17, 17a, 17b are configured to be wound around the outer periphery of the reinforcing layer (the floor layer 15d) by the same method as shown in FIG. 4 or FIG. Further, the protective layer 13 is extrusion coated on the outer peripheral portion of the water shielding layer 31.
- the melting point of the resin coating part of the multilayer film constituting the water shielding layer 31 is lower than the melting point of the resin forming the protective layer 13, and the resin constituting the resin coating part and the resin forming the protective layer 13 And may have compatibility. If the resin coating part and the protective layer 13 are compatible and the melting point of the resin coating part is lower than the melting point of the protective layer 13, when the resin of the protective layer 13 is extruded, the protective layer 13 and the multilayer tape Are easy to integrate with each other. For this reason, when the protective layer 13 is formed, a shift does not occur between the water shielding layer 31 and the protective layer 13.
- the resin coating portion may be nylon 12 and the protective layer 13 may be nylon 11.
- the resin coating portion may be low density polyethylene (LDPE) and the protective layer 13 may be high density polyethylene (HDPE).
- LDPE low density polyethylene
- HDPE high density polyethylene
- the resin coating (surface) can be made of a rubber member (for example, ethylene rubber, ethylene propylene rubber, silicon rubber, urethane rubber, butyl rubber, etc.). By doing in this way, the friction coefficient of the protective layer 13 and the resin coating part becomes large. For this reason, the protective layer 13 and the multilayer films 17, 17a, and 17b do not adhere and shift.
- a rubber member for example, ethylene rubber, ethylene propylene rubber, silicon rubber, urethane rubber, butyl rubber, etc.
- the flexible tube 1c configured in this way is usually used by being submerged or floating. Therefore, the protective layer 13 is always in contact with seawater. Since the protective layer 13 is made of resin, it has a certain level of waterproofness, but the resin itself has a slight water absorption. For this reason, the seawater component penetrates into the protective layer 13 slightly. In particular, a high water pressure is applied to the seabed, and there is a great risk of penetration of seawater components into the protective layer 13 when used for a long time.
- Seawater components usually cause metal corrosion. Therefore, when a metal reinforcing layer is located on the inner peripheral portion of the protective layer 13, the reinforcing layer is deteriorated due to corrosion, and the flexible tube itself may be damaged.
- the water shielding layer 31 is provided on the inner peripheral surface of the protective layer 13. Therefore, it is possible to prevent the seawater component from reaching the reinforcing layer inside the water shielding layer 31. That is, the reinforcement layer is not deteriorated by the seawater component by the water shielding layer 31.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
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Abstract
Description
また、金属層19が分割されることで、可撓管を曲げた際、金属層19が容易に変形に追従可能で、応力集中を緩和できる。このため、金属層19に局所的な過剰な応力が付与されることがない。したがって、長期的な繰り返し曲げ疲労特性を向上させることができ、長期信頼性に優れる流体輸送用可撓管を得ることができる。
3………インターロック管
5………樹脂層
7………遮蔽層
9………耐内圧補強層
11………軸力補強層
13………保護層
15a、15b、15c、15d………座床層
17、17a、30、40、50………複層テープ
19………金属層
20………金属箔
21………樹脂被覆部
21a………ゴム部
23………分割部
25………ラップ部
31………遮水層
41………金属線
Claims (12)
- 可撓性を有する管体と、
前記管体の外周側に設けられた遮蔽層と、
前記遮蔽層の外周側に設けられた補強層と、
前記補強層の外周側に設けられた保護層と、
を少なくとも具備し、
前記遮蔽層と前記管体との間、および/または、前記遮蔽層と前記補強層との間には、さらに樹脂層が形成され、
前記遮蔽層は、樹脂で金属層を挟み込んだ複層テープにより形成され、
前記金属層は、前記複層テープの断面において、少なくとも一部が分割されていることを特徴とする流体輸送用可撓管。 - 前記補強層と前記保護層との間に、さらに遮水層が形成され、
前記遮水層は、断面において少なくとも一部が分割されている金属層を樹脂で挟み込んだ複層テープにより形成されることを特徴とする請求項1記載の流体輸送用可撓管。 - 前記複層テープの平面において、前記金属層の分割部が、前記複層テープの長手方向に対して、所定の角度で形成されていることを特徴とする請求項1または請求項2に記載の流体輸送用可撓管。
- 前記複層テープの長手方向と前記金属層の分割部とのなす角度は、前記流体輸送用可撓管の周方向に対する前記複層テープの巻きつけ角度と略一致し、前記複層テープが巻きつけられた状態で、前記分割部の延伸方向が前記流体輸送用可撓管の周方向と略一致することを特徴とする請求項3記載の流体輸送用可撓管。
- 前記金属層は、複数の金属箔より形成され、前記分割部は、隣り合う前記金属箔同士の境界部であることを特徴とする請求項1記載の流体輸送用可撓管。
- 前記金属層は、複数の金属線より形成され、前記分割部は、隣り合う前記金属線同士の境界部であることを特徴とする請求項1記載の流体輸送用可撓管。
- 前記複層テープの樹脂部は、前記樹脂層と相溶性を有し、前記樹脂層よりも低融点の樹脂製であることを特徴とする請求項1記載の流体輸送用可撓管。
- 前記複層テープの少なくとも表面は、ゴム材料で構成され、前記ゴム材料が前記樹脂層と密着することを特徴とする請求項1記載の流体輸送用可撓管。
- 前記複層テープは、幅方向の端部同士が互いにラップしないように前記流体輸送用可撓管に対して螺旋状に巻きつけられ、内層側の前記複層テープ同士の隙間を覆うように、前記複層テープを2層以上巻きつけることを特徴とする請求項1記載の流体輸送用可撓管。
- 前記複層テープは、前記複層テープの幅方向端部が互いにラップするように前記流体輸送用可撓管に対して、螺旋状に巻きつけられることを特徴とする請求項1記載の流体輸送用可撓管。
- 前記複層テープの長手方向が前記流体輸送用可撓管の軸方向と略一致し、前記複層テープの幅方向が前記流体輸送用可撓管の周方向となるように巻きつけられ、前記複層テープのラップ部が、前記流体輸送用可撓管の軸方向に延伸することを特徴とする請求項1記載の流体輸送用可撓管。
- 可撓性を有する管体を管軸方向に送り、前記管体の外周側に遮蔽層を形成し、前記遮蔽層の外周側に補強層を形成し、前記補強層の外周側に保護層を押出被覆し、前記遮蔽層と管体との間、および/または、前記遮蔽層と前記補強層との間には、さらに樹脂層が押出被覆される流体輸送用可撓管の製造方法であって、
前記遮蔽層は、樹脂で金属層を挟み込んだ複層テープにより形成され、前記金属層は、前記複層テープの断面において、少なくとも一部が分割されており、
前記複層テープの平面において、前記金属層の分割部が、前記複層テープの長手方向に対して、所定の角度で形成されており、
前記複層テープの長手方向と前記金属層の分割部とのなす角度を、前記流体輸送用可撓管の周方向に対する前記複層テープの巻きつけ角度と略一致させて、前記分割部の延伸方向が前記流体輸送用可撓管の周方向と略一致するように前記複層テープを巻きつけることで前記遮蔽層が形成されることを特徴とする流体輸送用可撓管の製造方法。
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JP3134233U (ja) * | 2007-05-25 | 2007-08-09 | 株式会社トヨックス | メタル調ホース |
-
2011
- 2011-02-09 WO PCT/JP2011/052746 patent/WO2011105216A1/ja active Application Filing
- 2011-02-09 BR BR112012021431A patent/BR112012021431A2/pt not_active Application Discontinuation
- 2011-02-09 JP JP2012501730A patent/JP5705827B2/ja active Active
Patent Citations (6)
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JPS4818530B1 (ja) * | 1969-10-30 | 1973-06-06 | ||
JPS61197376U (ja) * | 1985-05-30 | 1986-12-09 | ||
JPH06286014A (ja) * | 1993-03-31 | 1994-10-11 | Sekiyu Kodan | 可撓性流体輸送管の製造方法 |
JPH07156285A (ja) * | 1993-12-10 | 1995-06-20 | Sekiyu Kodan | 可撓性流体輸送管 |
JP2595776Y2 (ja) * | 1993-12-28 | 1999-06-02 | 古河電気工業株式会社 | 不燃被覆導管 |
US20040060610A1 (en) * | 2001-02-22 | 2004-04-01 | Espinasse Philippe Francois | Flexible duct with shrinkage-proof film |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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RU214645U1 (ru) * | 2022-10-05 | 2022-11-08 | Константин Владимирович Рыжаков | Насадка для устройства нанесения текучей среды |
Also Published As
Publication number | Publication date |
---|---|
JP5705827B2 (ja) | 2015-04-22 |
BR112012021431A2 (pt) | 2016-05-31 |
JPWO2011105216A1 (ja) | 2013-06-20 |
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