WO2017210348A1 - Closure patch - Google Patents
Closure patch Download PDFInfo
- Publication number
- WO2017210348A1 WO2017210348A1 PCT/US2017/035292 US2017035292W WO2017210348A1 WO 2017210348 A1 WO2017210348 A1 WO 2017210348A1 US 2017035292 W US2017035292 W US 2017035292W WO 2017210348 A1 WO2017210348 A1 WO 2017210348A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- sensitive adhesive
- tube
- conduit
- heat
- Prior art date
Links
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 138
- 239000010410 layer Substances 0.000 claims description 104
- 239000000203 mixture Substances 0.000 claims description 69
- 238000009472 formulation Methods 0.000 claims description 57
- 238000000576 coating method Methods 0.000 claims description 29
- 239000004971 Cross linker Substances 0.000 claims description 26
- 239000011248 coating agent Substances 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 239000012790 adhesive layer Substances 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000002654 heat shrinkable material Substances 0.000 abstract description 2
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 27
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 24
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 16
- 230000008569 process Effects 0.000 description 13
- 239000002904 solvent Substances 0.000 description 11
- 238000005260 corrosion Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 7
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229920000098 polyolefin Polymers 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000003849 aromatic solvent Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
- F16L58/181—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for non-disconnectible pipe joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/38—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses
- B29C63/42—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses using tubular layers or sheathings
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/024—Woven fabric
-
- 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
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding 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
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
- F16L13/0254—Welded joints the pipes having an internal or external coating
- F16L13/0272—Welded joints the pipes having an internal or external coating having an external coating
-
- 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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/20—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics
- F16L47/22—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics using shrink-down material
-
- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
- F16L58/1063—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe the coating being a sheet wrapped around the pipe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/0065—Heat treatment
- B29C63/0069—Heat treatment of tubular articles
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/02—2 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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/242—All polymers belonging to those covered by group B32B27/32
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- 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
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
-
- 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
- B32B2307/718—Weight, e.g. weight per square meter
-
- 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
- B32B2307/732—Dimensional properties
-
- 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
- B32B2405/00—Adhesive articles, e.g. adhesive tapes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
Definitions
- the present disclosure relates to a covering for a tube, and particularly to a tube covering. More particularly, the present disclosure relates to a heat-shrinkable tube covering.
- a conduit in accordance with the present disclosure includes a wraparound sheet and a tube extending through a tube-receiving passageway formed in the wraparound sheet.
- the tube includes a first pipe and a second pipe coupled together at a pipe joint.
- the wraparound sheet cooperates with exterior pipe coatings on the first and second pipes to provide a continuous corrosion protection system for the conduit.
- the wraparound sheet extends circumferentially around the portion of the tube having the pipe joint and includes a first edge and a second edge.
- the first edge of the wraparound sheet is located between the second edge of the wraparound sheet and the tube and forms a sheet seam extending in co-axial parallel relation with the tube-receiving passageway.
- a closure strip is coupled to the wraparound sheet to cover the sheet seam.
- the closure strip and the wraparound sheet cooperate to form a heat-shrink sleeve on the tube to cover the pipe joint.
- the closure strip includes a pressure-sensitive adhesive layer configured to couple the closure strip to the wraparound sheet without pre-heating the closure strip so that movement of the first edge of the wraparound sheet relative to the second edge of the wraparound sheet during heat shrinking of the heat-shrink sleeve is minimized.
- the pressure-sensitive adhesive layer includes at least one pressure-sensitive adhesive.
- the at least one pressure-sensitive adhesive allows the closure strip to mate with the wraparound sheet without heat by using only pressure applied to the closure strip.
- FIGs. 1-4 are a series of views showing formation of a pipe joint between two pipes included in a tube and application of a heat- shrink sleeve to the pipes to cover and protect the pipe joint;
- FIG. 1 is a perspective view showing an initial stage of forming the tube in which a first fluid-transport unit including a first pipe and a first exterior pipe coating on a portion of the first pipe is aligned with a second fluid-transport unit including a second pipe and a second exterior pipe coating on a portion of the second pipe and showing the first pipe being welded to the second pipe to form a pipe joint and suggesting that a wraparound sheet and a closure patch will be mated to provide a heat-shrink sleeve mounted on the tube to form a conduit as shown, for example, in Fig. 4;
- FIG. 2 is a view similar to Fig. 1 showing the wraparound sheet having a heat- activated, heat- shrink layer extending circumferentially around the tube and forming a sheet seam and suggesting that a closure strip is applied to the sheet seam after removal of a release liner from the closure patch;
- Fig. 3 is a view similar to Fig. 2 showing the closure strip coupled to the sheet seam of the wraparound sheet after pressure has been applied and without heat to cause the heat-shrink sleeve that extends circumferentially around the tube from the first- exterior pipe coating to the second-exterior pipe coating to be established;
- Fig. 4 is a view similar to Fig. 3 showing heat from a torch has been applied to the heat-shrink sleeve to cause the heat-shrink sleeve to shrink around the pipe joint interconnecting the pipes to form a continuous corrosion barrier for the conduit;
- Fig. 5 is a diagrammatic view of a portion of the conduit in accordance with the present disclosure showing from top to bottom that the heat-shrink sleeve includes a closure strip including a backing layer and a pressure- sensitive adhesive layer coupled to the wraparound sheet, the wraparound sheet includes an exterior layer and an interior layer coupled to the tube, and the tube includes the first fluid-transport unit coupled to the second fluid-transport unit at the pipe joint;
- Fig. 6 is a diagrammatic view of the closure patch showing from top to bottom that the closure patch includes the closure strip including the backing layer and the pressure sensitive adhesive layer and a release liner mated with the pressure- sensitive adhesive layer to protect the pressure sensitive adhesive layer from getting damaged or dirty prior to installation;
- Fig. 7 is a perspective view of the closure patch with portions broken way to reveal that the closure patch includes, from top to bottom, the backing layer, the pressure sensitive adhesive layer, and the release liner, and suggesting that that the release liner may peeled away from the closure strip to expose the pressure sensitive adhesive layer;
- Fig. 8 is an enlarged sectional view taken along line 8-8 of Fig. 2, showing that the release liner has been removed from the closure patch to establish the closure strip ready for mating with the wraparound sheet and showing that the wraparound sheet is arranged to overlie the pipe joint and an uncoated portion of the tube located between the first exterior pipe coating and the second exterior pipe coating prior to heat shrinking of the wraparound sheet;
- Fig. 9 is an enlarged sectional view taken along line 9-9 of Fig. 4 showing the heat-shrink sleeve including the closure strip and the wraparound sheet mated with the tube after heating with the torch and showing that the heat-shrink sleeve extends between the first and second exterior pipe coatings to cover the uncoated portion of the tube to form a continuous corrosion protection barrier; and
- Fig. 10 is a diagrammatic view a process for forming and coupling the heat- shrink sleeve to the tube showing that the process includes the steps of providing a tube, providing a wraparound sheet, wrapping the wraparound sheet around the pipe joint of the tube, heating a heat-activated adhesive layer of the wraparound sheet to couple the first edge of the wraparound sheet to the second edge of the wraparound sheet to form the sheet seam, providing the closure patch, removing the release liner to form the closure strip, arranging the closure strip on the sheet seam, applying pressure to the closure strip to mate the closure strip to the sheet seam without heat to form the heat-shrink sleeve, and heating the heat- shrink sleeve to cause the heat-shrink sleeve to recover to the shape of the tube and forming the conduit.
- a heat-shrink sleeve 17 has an exterior, heat-activated, heat-shrink layer surrounding an interior adhesive layer as shown illustratively in Figs. 2-4 and 8-9.
- Heat- shrink sleeve 17 includes a wraparound sheet 14 and a closure strip 16 in an illustrative embodiment as suggested in Figs. 3 and 4.
- Closure strip 16 includes a backing layer 36 and a pressure-sensitive adhesive layer 34 arranged to interconnect backing layer 36 and wraparound sheet 14 in response to application of pressure.
- Closure strip 16 secures wraparound sheet 14 during a heat- shrinking process. Wraparound sheet 14 and closure strip 16 cooperate to form heat-shrink sleeve 17 on a tube 12 to cover a pipe joint 22 in tube 12. Once heat-shrink sleeve 17 is exposed to external heat 80, heat-shrink sleeve 17 shrinks and forms a conduit 10 as suggested in Figs. 4 and 9.
- Conduit 10 in accordance with the present disclosure includes tube 12, wraparound sheet 14, and closure strip 16, as shown in Figs. 3 and 4.
- Tube 12 is configured to transport fluid in an interior space located therein.
- Wraparound sheet 14 is configured to extend around a portion of tube 12.
- Closure strip 16 secures wraparound sheet 14 during a heat-shrink process and locates wraparound sheet 14 between closure strip 16 and tube 12.
- Wraparound sheet 14 and closure strip 16 cooperate to form heat-shrink sleeve 17 which extends circumferentially around tube 12 to provide corrosion resistance to a portion of tube 12.
- Tube 12 includes a first fluid-transportation unit 18 including a first pipe 13 having a first exterior pipe coating 13C, a second fluid-transportation unit 20 including a second pipe 15 having a second exterior pipe coating 15C, and a pipe joint 22
- Tube 12 is formed to include a fluid-conducting channel IOC extending therethrough as suggested in Figs. 1-3.
- Pipes 13, 15 cooperate to form a portion of tube 12 extending through a tube-receiving passageway defined by interior layer 24 of wraparound sheet 14 of as suggested in Figs. 1, 5, and 8.
- Tube 12 is arranged to extend through wraparound sheet 14 and closure strip 16, as shown in Figs. 1-4.
- Wraparound sheet 14 has a tubular shape and covers pipe joint 22 formed at the abutting ends of first pipe 13 and second pipe 15 as suggested in Figs. 1-3.
- Wraparound sheet 14 includes an interior layer 24 and an exterior layer 26.
- wraparound sheet 14 includes an interior heat-activated adhesive layer 24 and an exterior heat-activated heat shrink layer 26.
- Interior layer 24 comprises an adhesive configured to adhere to exterior pipe coatings 13C, 15C applied to first and second pipes 13, 15 included in tube 12 and to an exterior uncoated section 12U of tube 12 including pipe joint 22 as suggested in Figs. 1, 2, and 9.
- interior layer 24 comprises a heat-activated adhesive.
- interior layer 24 comprises a pressure-sensitive adhesive.
- Closure strip 16 is formed by removing release liner 19 from closure patch
- Closure strip 16 includes pressure- sensitive adhesive layer 34 and backing layer 36 as shown in Fig. 5.
- Pressure- sensitive adhesive layer 34 is configured to couple to wraparound sheet 14 by applying pressure without heat to locate sheet seam 32 between tube 12 and backing layer 36.
- closure strip 16 is configured to couple to wraparound sheet 14 by applying pressure with heat to locate sheet seam 32 between tube 12 and backing layer 36.
- First fluid-transport unit 18 includes a first pipe 13 and a first exterior pipe coating 13C coupled to an exterior surface of first pipe 13 as suggested in Figs. 1 and 5.
- First pipe 13 is configured to retain fluid therein.
- first pipe 13 is formed of a metal.
- first exterior pipe coating 13C comprises a plastic material.
- first exterior pipe coating 13C comprises a polyethylene material.
- Second fluid-transport unit 20 includes a second pipe 15 and a second exterior pipe coating 15C coupled to an exterior surface of second pipe 15 as suggested in Figs 1 and 5.
- Second pipe 15 is configured to retain fluid therein.
- second pipe 15 is formed of a metal.
- first pipe 13 and second pipe 15 are formed of the same metal.
- second exterior pipe coating 15C comprises a plastic material.
- second exterior pipe coating 15C comprises a polyethylene material.
- a first exposed portion 13EP of the first pipe 13 is mated to a second exposed portion 15EP of second pipe 15 to establish pipe joint 22 therebetween.
- Exposed portions 13EP, 15EP, and pipe joint 22 cooperate to define an exterior uncoated section 12U of tube 12 located between first and second exterior pipe coatings 13C, 15C as suggested in Figs. 2, 9 and 10.
- pipe joint 22 is used to interconnect the ends of pipes 13,
- first fluid-transport unit 18 may be connected to second fluid- transport unit 20 using a TIG welder 90, as shown in Fig. 1. It is within the scope of this disclosure to use any suitable welding or coupling technique.
- wraparound sheet 14 and closure strip 16 can be arranged to form heat- shrink sleeve 17 over first fluid-transport unit 18 and second fluid-transport units 20 so as to cover pipe joint 22, first exposed portion 13EP, and second exposed portion 15EP, as suggested in Figs. 3 and 4.
- Heat-shrink sleeve 17 may have a tubular shape and covers uncoated section 12U formed at the abutting ends of a first pipe 13 and a second pipe 15 as suggested in Figs. 2, 3, and 5.
- Pipes 13, 15 cooperate to form a portion of a tube 12 extending through a tube- receiving passageway defined by interior layer 24 of wraparound sheet 14 of heat-shrink sleeve 17 as suggested in Fig. 2.
- Interior layer 24 of wraparound sheet 14 includes an adhesive configured to adhere to exterior pipe coatings 13C, 15C and exterior uncoated section 12U of tube 12 including pipe joint 22 as suggested in Figs. 2-4 and 9 to provide corrosion resistance.
- heat-shrink sleeve 17 is heated using gas torch 80 or other suitable heater to at least a predetermined temperature to cause exterior layer 26 to shrink and conform to exposed portions 13EP, 15EP of first and second fluid-transport units 18, 20.
- gas torch 80 is moved around the circumference of heat-shrink sleeve 17 using a side-to-side motion to apply heat to all exposed exterior surfaces of wraparound sheet 14 and closure strip 16 of heat-shrink sleeve 17.
- Wraparound sheet 14 includes interior layer 24, exterior layer 26, a first edge
- Interior layer 24 is formed of a heat-activated adhesive and can alternatively be called a heat-activated adhesive layer 24.
- Exterior layer 26 is formed of a heat-shrinkable material and can alternatively be called a heat-activated heat shrink layer 26.
- Wraparound sheet 14 wraps around tube 12 to form a sheet which locates exterior layer 26 of first edge 28 between interior layer 24 of second edge 30 and tube 12 as shown in Fig. 2.
- Exterior layer 26 of wraparound sheet 14 has heat- shrinking properties that allow wraparound sheet 14 to shrink and conform to the shape of the underlying structure as shown in Figs. 4 and 9 when external heat 80 is applied as shown in Fig. 4.
- exterior layer 26 is heat shrinkable when exposed to heat above a predetermined temperature.
- exterior layer 26 is made from a polyolefin-based sheet that shrinks by about 5% to about 200%, based on the reduction in length, upon heating.
- the polyolefin layer shrinks by about 10% to about 60%, based on the reduction in length, upon heating.
- the polyolefin layer shrinks by about 25% to about 50%, based on the reduction in length, upon heating.
- the polyolefin layer shrinks from about 10% to about 60%, based on the reduction in length, upon heating.
- Closure strip 16 cooperates with wraparound sheet 14 to form heat-shrink sleeve 17 and includes backing layer 36 and pressure- sensitive adhesive layer 34 as shown in Figs. 2 and 5-7.
- Pressure-sensitive adhesive layer 34 extends between and interconnects backing layer 36 with exterior layer 26 of wraparound sheet 14, as shown in Figs. 5, 6, and 8. Pressure-sensitive adhesive layer 34 is configured to couple closure strip 16 to wraparound sheet 14 without heating so that movement of first edge 28 of wraparound sheet 14 relative to second edge 30 of wraparound sheet 14 during heat shrinking of heat-shrink sleeve 17 is minimized. Pressure-sensitive adhesive layer 34 comprises a pressure- sensitive adhesive that couples closure strip 16 to wraparound sheet 14 without heat. In another example, pressure-sensitive adhesive layer 34 is configured to couple closure strip 16 to wraparound sheet 14 with heat. In yet another example, pressure-sensitive adhesive layer 34 is configured to couple closure strip 16 to wraparound sheet 14 with both heat and pressure.
- pressure-sensitive adhesive layer 34 comprises a pressure- sensitive adhesive formulation including at least one pressure-sensitive adhesive.
- the pressure- sensitive adhesive is an acrylic pressure-sensitive adhesive.
- the at least one pressure-sensitive adhesive is Aroset s488 available from Ashland.
- the at least one pressure-sensitive adhesive is Aroset 1551a available from Ashland.
- the at least one pressure- sensitive adhesive is s8764 available from Avery-Dennison.
- the pressure- sensitive adhesive is a urethane pressure-sensitive adhesive.
- the pressure- sensitive adhesive may be a heat cross-linkable pressure sensitive adhesive.
- the pressure-sensitive adhesive may be a UV- activated pressure-sensitive adhesive.
- each pressure-sensitive adhesive formulation comprises a solvent blend.
- a solvent blend comprises a mixture of an aromatic solvent, a non-aromatic solvent, and an alcohol.
- a solvent blend comprises ethyl acetate, heptane, toluene, and isopropanol.
- the solvent blend comprises about 60% ethyl acetate, about 20% heptane, about 17% toluene, and about 3% isopropanol.
- a solvent blend comprises ethyl acetate, toluene, and isopropanol.
- a solvent blend comprises about 52% ethyl acetate, about 41% toluene, and about 7% isopropanol. In still yet another exemplary embodiment, a solvent blend comprises about 35% ethyl acetate, about 53% toluene, and about 12% isopropanol.
- the pressure- sensitive adhesive formulation further comprises a cross-linker.
- the cross-linker is active during the heating step.
- the cross-linker is active while adhesive layer 34 is drying.
- the cross-linker is a phenolic based cross-linker.
- the cross-linking agent comprises HRJ-10518 available from SI Group.
- the cross-linker is blended in toluene.
- the pressure- sensitive adhesive formulation includes a pressure-sensitive adhesive and a cross-linker.
- the pressure- sensitive adhesive formulation may comprise a percentage of a pressure-sensitive adhesive and the remainder of the percentage is a cross-linker.
- the pressure- sensitive adhesive may be one of several different percentages of the pressure-sensitive adhesive formulation or fall within one of several different ranges.
- the percentage by weight of the pressure- sensitive adhesive in the pressure- sensitive adhesive formulation may be one of the following ranges: about 85% to about 99%, about 90% to about 99%, about 93% to about 99%, about 94% to about 99%, about 94% to about 98.5%, about 95% to about 98.5%, about 96% to about 98.5%, and about 97% to about 98.5%.
- the percentage by weight of the pressure-sensitive adhesive in the pressure-sensitive adhesive formulation may be: about 85%, about 90%, about 93%, about 94%, about 95%, about 96%, about 97%, about 98%, about 98.5%, and about 99%.
- the pressure-sensitive adhesive is about 95% by weight of the pressure-sensitive adhesive formulation.
- the pressure- sensitive adhesive is about 95.2% by weight of the pressure-sensitive adhesive formulation.
- the cross-linker may be one of several different percentages of the pressure- sensitive adhesive formulation or fall within one of several different ranges.
- the percentage by weight of the cross-linker in the pressure- sensitive adhesive formulation may be one of the following ranges: about 0.5% to about 15%, about 1% to about 10%, about 1% to about 7%, about 1% to about 6%, about 1.5% to about 6, about 1.5% to about 5%, about 1.5% to about 4%, and about 1.5% to about 3%.
- the percentage by weight of the cross-linker in the pressure- sensitive adhesive formulation may on of the following ranges: about 0.5% to about 4% and about 1.5% to about 6%.
- the percentage by weight of the cross-linker in the pressure-sensitive adhesive formulation may be: about 15%, about 10%, about 7%, about 6%, about 5%, about 4%, about 3%, about 2%, about 1.5%, about 1%, and about 0.5%.
- the percentage by weight of the cross-linker in the pressure-sensitive adhesive formulation may be: up to about 15%, up to about 10%, up to about 7%, up to about 6%, up to about 5%, up to about 4%, up to about 3%, up to about up to 2%, up to about 1.5%, and up to about 1%.
- the cross-linker is about 5% by weight of the pressure- sensitive adhesive formulation and the remainder of the formulation is the pressure- sensitive adhesive. In another example, the cross-linker is about 4.8% by weight of the pressure- sensitive adhesive formulation
- a pressure- sensitive adhesive formulation comprises Aroset s488 available from Ashland and HRJ-10518 available from SI Group.
- the pressure-sensitive adhesive formulation comprises about 95% by weight Aroset s488 and about 5% by weight HRJ-10518.
- the pressure- sensitive adhesive formulation comprises about 95.2% Aroset s488 and about 4.8% by weight HRJ-10518.
- pressure-sensitive adhesive layer 34 comprises a pressure-sensitive adhesive formulation including a first pressure- sensitive adhesive, a second pressure- sensitive adhesive, and a cross-linker.
- the first pressure- sensitive adhesive may be one of several different percentages of the pressure- sensitive adhesive formulation or fall within one of several different ranges. In a set of ranges, the percentage by weight of the first pressure-sensitive adhesive in the pressure- sensitive adhesive formulation may be one of the following ranges: about 50% to about 90%, about 50% to about 85%, about 50% to about 80%, about 55% to about 80%, about 60% to about 80%, about 60% to about 75%, and about 65% to about 70%.
- the percentage by weight of the first pressure-sensitive adhesive in the pressure-sensitive adhesive formulation may be: about 50%, about 55%, about 60%, about 65%, about 66%, about 67%, about 68%, about 69%, about 70%, about 71%, about 72%, about 73%, about 75%, about 80%, about 85%, and about 90%.
- the second pressure-sensitive adhesive may be one of several different percentages of the pressure- sensitive adhesive formulation or fall within one of several different ranges.
- the percentage by weight of the second pressure- sensitive adhesive in the pressure- sensitive adhesive formulation may be one of the following ranges: about 10% to about 50%, about 15% to about 50%, about 15% to about 45%, about 15% to about 40%, about 20% to about 40%, about 20% to about 35%, about 25% to about 35%, and about 25% to about 30%.
- the percentage by weight of the second pressure- sensitive adhesive in the pressure- sensitive adhesive formulation may be about 16% to about 40%.
- the pressure-sensitive adhesive formulation comprises about 60% to about 80% of a first pressure-sensitive adhesive, about 15% to about 40% of a second pressure sensitive adhesive, and about 0.5% of a cross-linker.
- a pressure-sensitive adhesive formulation comprises Aroset s488 available from Ashland and s8764 available from Avery-Dennison as the first pressure-sensitive adhesive, s8764 available from Avery-Dennison as a second pressure- sensitive adhesive, and HRJ-10518 available from SI Group as a cross-linker.
- the pressure-sensitive adhesive formulation comprises about 70% by weight of Aroset s488 and about 28% by weight of s8764 available from Avery-Dennison, and about 2% by weight of HRJ-10518 available from SI Group.
- Backing layer 36 mates with pressure-sensitive adhesive layer 34 to provide structural strength to closure strip 16.
- backing layer 36 includes a tie layer that extends between and interconnects backing layer 36 with pressure-sensitive adhesive layer 34.
- tie layer comprises a urethane.
- backing layer 36 comprises an irradiated polyethylene.
- backing layer 36 comprises a fiberglass.
- backing layer 36 comprises Glass Cloth style 1131, Finish Greige with a plain weave type, available from JPS.
- Release liner 19 mates with pressures-sensitive adhesive layer 34 and forms closure patch 21.
- release liner 19 comprises plastic.
- release liner 19 comprises paper.
- release liner 19 is silicon coated.
- Closure strip 16 provides minimized installation time to mount wraparound sheet 14 on tube 12 to form heat-shrink sleeve 17.
- the use of or need for specialized equipment, other than torch 80 for heating heat-shrink sleeve 17, may also be minimized.
- mounting closure strip 16 to wraparound sheet 14 without heat further expedites the formation of heat- shrink sleeve 17 to reduce the amount of time for forming conduit 10.
- FIG. 10 An illustrative process 200 for forming a conduit 10 is shown in Fig. 10.
- Process 200 includes a step of providing tube 12 including first pipe 13 and second pipe 15 joined at pipe joint 22.
- first pipe 13 and second pipe 15 include exterior pipe coatings 13C, 15C.
- Tube 12 further includes uncoated region 12U located between first exterior pipe coating 13C and second exterior pipe coating 15C.
- Process 200 further includes a step of providing wraparound sheet 14 as shown in Fig. 10.
- Wrap-around sheet 14 includes exterior layer 26 and interior layer 24.
- interior layer 24 is also called interior heat- activated heat shrink layer 24.
- exterior layer 26 is also called exterior heat-activated heat shrink layer 26.
- Wraparound sheet 14 further includes first edge 28 and second edge 30 located spaced-apart from first edge 28.
- Process 200 further includes a step of wrapping circumferentially wraparound sheet 14 around pipe joint 22 and uncoated region 12U causing first edge 28 to be located radially between heat-activated adhesive layer 24 of second edge 30 and pipe joint 22 as shown in Fig. 10.
- Process 200 further includes a step of adhering interior layer 24 of second edge 30 as shown in Fig. 10 to bond interior layer 24 of second edge 30 with exterior layer 26 of first edge 28 to form sheet seam 32.
- Process 200 further includes a step of providing closure patch 21 and removing release liner 19 to form closure strip 16.
- Process 200 further includes locating closure strip 16 on sheet seam 32 as shown in Fig. 10.
- Process 200 further includes a step of applying pressure with a roller 82 to mate pressure-sensitive adhesive layer 34 of closure strip 16 to wraparound sheet 14 without heat as shown in Fig. 10 to form heat-shrink sleeve 17.
- Process 200 further includes heating heat- shrink sleeve 17 with torch 80 to cause heat-shrink sleeve to shrink radially as shown in Fig. 10.
- Shrinking heat-shrink sleeve 17 causes interior layer 24 of wraparound sheet 14 to mate with uncoated region 12U of tube 12.
- Mating heat-shrink sleeve 17 with uncoated region 12U protects uncoated region 12U from corrosion.
- Shrunk, or recovered, heat-shrink sleeve 17 cooperates with first pipe coating 13C and second exterior pipe coating 15C to form a continuous corrosion protection system for conduit 10.
- Pressure-sensitive adhesive layer 34 extends between and interconnects backing layer 36 with exterior layer 26 of wraparound sheet 14, as shown in Figs. 5, 6, and 8. Pressure-sensitive adhesive layer 34 is configured to provide means for coupling closure strip 16 to wraparound sheet 14 without heating so that movement of first edge 28 of wraparound sheet 14 relative to second edge 30 of wraparound sheet 14 during heat shrinking of heat-shrink sleeve 17 is minimized. Pressure-sensitive adhesive layer 34 comprises a pressure-sensitive adhesive that couples closure strip 16 to wraparound sheet 14 without heat.
- Pressure-sensitive adhesive formulation 1 is formed by blending Aroset s488 and HRJ-10518 as described in Table 1.
- Aroset s488 is provided in a solvent blend comprising
- Pressure-sensitive adhesive formulation 2 is formed by blending Aroset s488, HRJ-10518, and s8764 according to Table 2.
- Aroset s488 is provided in a solvent blend as described in Example 1.
- s8764 is provided in a solvent blend comprising
- Pressure-sensitive adhesive formulation 3 is formed by blending Aroset
- Aroset 1551a is provided in a solvent blend comprising about 60% Ethyl Acetate,
- a closure patch 21 was constructed with the following layers:
- backing layer 36 comprising Glass Cloth style 1131, Finish Greige with a plain weave type, available from JPS;
- tie layer comprising a urethane available from Worthen Industries
- pressure-sensitive adhesive layer 34 prepared as described in Example 1.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17807430.8A EP3463792A4 (en) | 2016-05-31 | 2017-05-31 | Closure patch |
BR112018074935-4A BR112018074935A2 (en) | 2016-05-31 | 2017-05-31 | conduit, and method for forming a conduit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201662343368P | 2016-05-31 | 2016-05-31 | |
US62/343,368 | 2016-05-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017210348A1 true WO2017210348A1 (en) | 2017-12-07 |
Family
ID=60417671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2017/035292 WO2017210348A1 (en) | 2016-05-31 | 2017-05-31 | Closure patch |
Country Status (4)
Country | Link |
---|---|
US (1) | US10746342B2 (en) |
EP (1) | EP3463792A4 (en) |
BR (1) | BR112018074935A2 (en) |
WO (1) | WO2017210348A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3463792A4 (en) * | 2016-05-31 | 2020-01-08 | Berry Plastics Corporation | Closure patch |
DE102017116850A1 (en) * | 2017-07-25 | 2019-01-31 | Minimax Viking Research & Development Gmbh | pipe connection |
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Also Published As
Publication number | Publication date |
---|---|
US20170343149A1 (en) | 2017-11-30 |
BR112018074935A2 (en) | 2019-03-12 |
EP3463792A4 (en) | 2020-01-08 |
US10746342B2 (en) | 2020-08-18 |
EP3463792A1 (en) | 2019-04-10 |
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