WO2003027557A1 - Barrier tubing - Google Patents
Barrier tubing Download PDFInfo
- Publication number
- WO2003027557A1 WO2003027557A1 PCT/US2002/030869 US0230869W WO03027557A1 WO 2003027557 A1 WO2003027557 A1 WO 2003027557A1 US 0230869 W US0230869 W US 0230869W WO 03027557 A1 WO03027557 A1 WO 03027557A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tube
- foil
- layer
- metal
- tubes
- Prior art date
Links
- 230000004888 barrier function Effects 0.000 title abstract description 16
- 239000011888 foil Substances 0.000 claims abstract description 39
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 31
- 229920000642 polymer Polymers 0.000 claims abstract description 16
- 239000004952 Polyamide Substances 0.000 claims abstract description 9
- 229920002647 polyamide Polymers 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 229920000098 polyolefin Polymers 0.000 claims abstract 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 abstract description 11
- 239000004033 plastic Substances 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 239000000446 fuel Substances 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 46
- 239000003507 refrigerant Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 229920001684 low density polyethylene Polymers 0.000 description 7
- 239000004702 low-density polyethylene Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 229920000092 linear low density polyethylene Polymers 0.000 description 6
- 239000004707 linear low-density polyethylene Substances 0.000 description 6
- -1 polytetrafluoroethylene Polymers 0.000 description 6
- 230000035699 permeability Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 239000002033 PVDF binder Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- 239000003351 stiffener Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229920000571 Nylon 11 Polymers 0.000 description 2
- 229920000299 Nylon 12 Polymers 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 229920002313 fluoropolymer Polymers 0.000 description 2
- 239000004811 fluoropolymer Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000003039 volatile agent Substances 0.000 description 2
- 229920003313 Bynel® Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910021595 Copper(I) iodide Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical group [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 1
- 229940063655 aluminum stearate Drugs 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- LSXDOTMGLUJQCM-UHFFFAOYSA-M copper(i) iodide Chemical compound I[Cu] LSXDOTMGLUJQCM-UHFFFAOYSA-M 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 239000013047 polymeric layer Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- 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
- B32B15/088—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 comprising polyamides
-
- 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
- B32B15/085—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 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- 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
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
- F16L11/121—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting specially profiled cross sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
- B32B2307/7246—Water vapor barrier
-
- 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
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
-
- 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
- B32B2311/00—Metals, their alloys or their compounds
- B32B2311/24—Aluminium
-
- 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
- B32B2377/00—Polyamides
-
- 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
-
- 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
- F16L2011/047—Hoses, i.e. flexible pipes made of rubber or flexible plastics with a diffusion barrier layer
Definitions
- the invention relates to plastic tube fluid handling means for use in fuel lines, refrigerator hose, in-floor heating pipe, solar hot water heating systems and the like. More particularly, this invention relates to such structures incorporating one or more polymeric tubes surrounded by laminated foils.
- metal layers will provide impermeability to polymeric tubes for use in subfloor heating and other applications.
- structures for obtaining good impermeability for practical use in these systems from the combination of metal and plastic or polyamide and aluminum are not available or are costly to produce.
- European Patent Publication 864,823 A2 discloses tubes for solar heat exchangers made of an elastomer or plastic inner layer, a stiffener layer of thermally conductive metal such as aluminum in the form of a mesh or helical layer, and optionally an outer layer of the same elastomer or plastic.
- the inner polymer layer can be 0.1-2.5 mm (0.004 - 0.1 inches) thick, preferably 0.1-0.3 mm (0.004 - 0.012 inches), and the stiffener can be 0.1-2 mm (0.004 - 0.079 inches) thick.
- US Patent 3,648,768 shows making a web of plastic with parallel tubes spaced apart in the web. It says nothing about barrier layers or using metal in the webs .
- the invention provides a structure for use in fluid handling comprising at least one polymeric tube surrounded by and sealed to a laminated foil, said foil having two faces, one facing toward the tube, and the other facing away from the tube, said foil comprising at least one layer of metal with at least one polymer layer on at least the side facing the tube, said tube having an inner diameter in the range of 5-50 mm in the case of one tube and 2-50 mm in the case of more than one tube, and a wall thickness in the range of 0.1-1.0 mm, said foil having a total thickness in the range of 0.05-0.25 mm and a total metal thickness in the range of 0.002-0.1 mm.
- FIGURE 1 is a perspective view of a multiple tube ribbon structure of the invention
- FIGURE 2 is a perspective view of a single tube structure of the invention
- FIGURE 3 is a cross sectional view of an end of a typical structure of the invention.
- Tubing and hose requirements for a number of industrial applications include very high barrier to water, or air/ oxygen or contained materials such as refrigerants.
- refrigerant when attempting to design refrigerant hose from polymeric tubing, a number of factors must be considered: i) The refrigerant must be retained inside the tubing structure for a long time such as for many years, with minimal losses . ii) Moisture and air must be prevented from permeating into the tubing. Air is non-condensable and would diminish the performance of the refrigeration system.
- refrigerants such as hydrofluorocarbons (HFC's) and hydrochlorofluorocarbons (HCFC's)
- HFC's hydrofluorocarbons
- HCFC's hydrochlorofluorocarbons
- tube(s) tubes
- tubing tubing
- foil foil
- laminated foil laminated foil
- the present invention contemplates a composite structure depicted generally at 10.
- a polymeric tube 12 is completely surrounded by film 14 containing a metal layer 16.
- the film 14 containing a metal layer 16 is wrapped in conformal fashion around the tube 12 in the array and is preferably bonded to the outer surface 18 of the tube 12 where it contacts the tube 12 or to itself in the areas adjacent to the tube(s) 12. It is desirable to produce a tight wrap around the tube 12 , with no significant free volume between the outside surface 18 of the tube(s) 12 and the inside surface 20 of the film 14.
- the metal layer 16 provides a suitable barrier, capable of preventing excessive transmission of moisture, air, refrigerant or other permeants.
- Such foil laminates are widely available and are of relatively low cost, compared with other materials of similar barrier.
- the location of the high barrier layer outside of, and surrounding the tubing 12, as shown in FIGURES 1, 2 and 3, serves to keep the tubing relatively dry. This is significant when the tubing is a moisture sensitive material such as a polyamide.
- the burst pressure of dry polyamide tubing is much higher than it is for polyamide exposed to environmental humidity. This feature allows the tubing to be designed with a larger tube diameter.
- Two or more layers of foil can be used, and they may be made from a single sheet that has been folded, or from multiple sheets, with the plastic layers applied to each layer of metal or to the whole set of foil. Also, when a first layer of foil is applied to one side of a tube or set of tubes, and then a second layer is applied to the other side, the same piece of foil can be folded and used on both sides.
- the film may be quite flexible, thereby enhancing the flexibility of the entire bonded structure.
- Tubes can be circular in cross-section or can be elliptical or of other non-circular shape.
- the tubing may be extruded as elliptical in shape or may be extruded as circular in shape and then made elliptical in the process of making the structure.
- tubing material A number of different polymers could be chosen for the tubing material, but selection depends on the needs for specific applications and should be based on: service temperature, chemical resistance and pressure.
- Tube diameter and wall thickness are sized to handle the pressure of respective applications .
- Metal surrounds the tubing except in small areas at nodes and edges and this provides a significant improvement in barrier to permeation of refrigerant, moisture and air.
- more than one layer of metal could be used or the metal layer thickness could be varied to achieve desired levels of barrier.
- Example 2 The approach used in Example 2 began when it was realized that the tubes could be "tacked” onto one of the film layers by applying heat and pressure. This process illustrates production of a number of barrier tubes in parallel; individual barrier tubes can be produced by slitting the film between the tubes, or by carrying out the process with a single tube. Though the tubes were only bonded to the film over a very narrow area, the bond was sufficient to hold the tubes in place long enough to allow the process to be completed. It was necessary to have some means to line up the tubing and this was accomplished by pulling the tubing through a block of PTFE which had slots in it . The slots expose part of the tube surface to the outside.
- the tubing contained a heat stabilizer additive, consisting of 0.6 percent of a 7-1-1 (by weight) blend of potassium iodide, cuprous iodide, and aluminum stearate.
- the laminated foil was obtained commercially from Ludlow Corporation as BFW-48 film.
- the BFW-48 film consists of (in order) approximately 0.038 mm (0.0015 inches) of LLDPE (linear low density polyethylene), 0.022 mm (0.00085 inches) of LDPE (low density polyethylene), 0.007 mm (0.00029 inches) of aluminum foil, 0.022 mm (0.00085 inches) of LDPE and 0.012 mm (0.00048 inches) of PET (polyethylene terephthalate) , for a total thickness of approximately 0.10 mm (0.004 inches).
- the BFW-48 film having an approximate width of 8 cm and length of 80 cm, was first folded in halves along the length, such that the side with the LLDPE layer faces inward.
- the 4 cm wide folded film was then passed through a DOBOY "Hospital Sealer” (a continuous/rotary heat sealer) , so as to create approximately 2.5 cm of sealed portion, inward of the unfolded edge. This resulted in the formation of a sleeve with an approximate opening diameter of 1.5 cm.
- the 65 cm long nylon tubing was then inserted into the sleeve completely. Since the sleeve was longer than the tubing, there was an extra length of film covering at each end. Using the DOBOY sealer, one of these ends was heat sealed.
- the encased tubing was then placed in an AUDIONVAC AE401 vacuum sealer chamber, such that the unsealed end of the sleeve was laid across the heat seal bar.
- the air inside the chamber was then evacuated, and a heat sealing process of the sleeve's open end proceeded. This resulted in the sleeve enclosing and conforming to the shape of the tubing, with no air in the structure.
- the vacuum-sealed sleeve was then placed in a Blue M oven (model OV-490A-3) and heated at 120°C for 10 minutes.
- the heat melted the LLDPE layer on the film and allowed bonding to form, such that upon cooling, the tubing was tightly encased by the laminated foil .
- the excess edges around the tube was finally slit off to within about 3 mm from the edge. The excess film portion at the ends were also cut.
- Tubing with an inside diameter of 2.9 mm (0.114 inches) and a wall thickness of 0.34 mm (0.0133 inches) was used to make a ribbon structure by bonding the tubing to two film layers.
- the tubing was a co-extruded structure in which the inner layer consisted of nylon 66 at 0.30 mm (0.0118 inches thick) and the outer layer consisted of an anhydride- modified low density polyethylene 0.04 mm (0.0015 inches) thick, available from E.I. DuPont de Nemours & Co. as Bynel ® 4206.
- the melting point of the polymer in the outer layer was approximately 102 C, its melt index was 2.5 and its density was 0.92 g/cc.
- the purpose of the outer layer was to improve the bond between the tubing and the film in the finished structure.
- Eight tubes of the above composition were tacked to the polyethylene surface layer of BFW-48 film from Ludlow Corporation.
- the BFW-48 film consists of (in order) approximately 0.038 mm (0.0015 inches) of LLDPE (linear low density polyethylene), 0.022 mm (0.00085 inches) of LDPE (low density polyethylene), 0.007 mm (0.00029 inches) of aluminum foil, 0.022 mm (0.00085 inches) of LDPE and 0.012 mm (0.00048 inches) of PET (polyethylene terephthalate), for a total thickness of approximately 0.10 mm (0.004 inches).
- the tubes were tacked to the film by pulling them through a slotted tube guide and then pressing them to the surface of the film.
- the tubes were spaced apart, i.e. one tube did not contact the adjacent tubes in the structure.
- the film was heated from underneath by a "Dataplate Digital Hot Plate” made by Cole-Parmer and its surface was maintained at a uniform temperature of about 125 C.
- a second layer of BFW-48 film was placed facing the first layer (which had the tubes attached) , such that the two polyethylene surfaces of the film were facing each other.
- Each film was 127 mm (5 inches) wide.
- the film edges were then sealed together using a "DOBOY Hospital Sealer" (a continuous rotary heat sealer) .
- Lengths of this sleeve were produced which were approximately 100 cm (3.3 feet long) . Short lengths of tubing were peeled back and cut off at each end, in order to alow the next step to proceed. The sleeves thus formed were then placed in an AUDIONVAC AE401 vacuum sealer. The air between the film layers and the tubes was evacuated and the ends of the sleeve were sealed. The vacuum-sealed sleeves were then placed in a Blue M oven (model OV-490A-3) and heated at 120 C for 15 minutes. The heat melted the polyethylene layers and bonded the structure together. The outside excess edges of the ribbon were trimmed. Samples of the ribbon were tested as a refrigerant hose and also, other samples of the ribbon were slit into individual tubes and tested as a refrigerant hose .
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003531078A JP2005504935A (en) | 2001-09-27 | 2002-09-27 | Barrier tube material |
EP02799665A EP1436540A1 (en) | 2001-09-27 | 2002-09-27 | Barrier tubing |
CA002458728A CA2458728A1 (en) | 2001-09-27 | 2002-09-27 | Barrier tubing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US32522501P | 2001-09-27 | 2001-09-27 | |
US60/325,225 | 2001-09-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003027557A1 true WO2003027557A1 (en) | 2003-04-03 |
Family
ID=23266962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2002/030869 WO2003027557A1 (en) | 2001-09-27 | 2002-09-27 | Barrier tubing |
Country Status (5)
Country | Link |
---|---|
US (1) | US20030070720A1 (en) |
EP (1) | EP1436540A1 (en) |
JP (1) | JP2005504935A (en) |
CA (1) | CA2458728A1 (en) |
WO (1) | WO2003027557A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006057199A1 (en) * | 2006-12-05 | 2008-06-12 | Henco Industries Nv | Composite tube, e.g. for connecting components in refrigerating/solar-power plants, has two plastic layers forming inner and outer layers each including a metal layer with an intermediate joint formed by a layer of bonding agent |
US20080164009A1 (en) * | 2007-01-07 | 2008-07-10 | Yong Chong | Direct Embedded Heat Pipe Apparatus |
CZ200822A3 (en) * | 2008-02-15 | 2009-08-26 | Dura-Line Ct, S. R. O. | Nest of tubes or micro-tubes |
WO2019208852A1 (en) * | 2018-04-27 | 2019-10-31 | 주식회사 이지원인터넷서비스 | Composite panel with reinforcement pipe inserted therein and manufacturing method therefor |
US11473710B2 (en) | 2019-10-15 | 2022-10-18 | Chad Michael Arntz | Heated drain or vent pipe |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5398729A (en) * | 1992-08-25 | 1995-03-21 | Cooper Tire & Rubber Company | Low permeation fuel hose |
US5469915A (en) * | 1992-05-29 | 1995-11-28 | Anthony J. Cesaroni | Panel heat exchanger formed from tubes and sheets |
EP1010929A1 (en) * | 1998-12-16 | 2000-06-21 | Tokai Rubber Industries, Ltd. | Hose for a refrigerant for an electrically driven compressor |
EP1020673A1 (en) * | 1999-01-11 | 2000-07-19 | Tokai Rubber Industries, Ltd. | Hose for transporting carbon dioxide refrigerant |
EP1113208A2 (en) * | 1999-12-27 | 2001-07-04 | Tokai Rubber Industries, Ltd. | Impermeable hose and a process for manufacturing the same |
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US3349469A (en) * | 1957-05-08 | 1967-10-31 | Kaiser Aluminium Chem Corp | Method of making laminated sheet |
US3831664A (en) * | 1973-11-07 | 1974-08-27 | Boeing Co | Heat pipe interfaces |
DE3243713C2 (en) * | 1982-11-26 | 1985-05-15 | Fr. Kammerer GmbH, 7530 Pforzheim | Flat heat exchanger plate and process for their manufacture |
JP3903679B2 (en) * | 2000-02-16 | 2007-04-11 | 東海ゴム工業株式会社 | Non-permeable composite hose |
JP2001263544A (en) * | 2000-03-21 | 2001-09-26 | Tokai Rubber Ind Ltd | Impermeable composite hose |
US6742576B2 (en) * | 2001-09-27 | 2004-06-01 | E. I. Du Pont De Nemours And Company | Heat exchanger barrier ribbon with polymeric tubes |
-
2002
- 2002-09-26 US US10/255,246 patent/US20030070720A1/en not_active Abandoned
- 2002-09-27 EP EP02799665A patent/EP1436540A1/en not_active Withdrawn
- 2002-09-27 JP JP2003531078A patent/JP2005504935A/en active Pending
- 2002-09-27 WO PCT/US2002/030869 patent/WO2003027557A1/en not_active Application Discontinuation
- 2002-09-27 CA CA002458728A patent/CA2458728A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5469915A (en) * | 1992-05-29 | 1995-11-28 | Anthony J. Cesaroni | Panel heat exchanger formed from tubes and sheets |
US5398729A (en) * | 1992-08-25 | 1995-03-21 | Cooper Tire & Rubber Company | Low permeation fuel hose |
EP1010929A1 (en) * | 1998-12-16 | 2000-06-21 | Tokai Rubber Industries, Ltd. | Hose for a refrigerant for an electrically driven compressor |
EP1020673A1 (en) * | 1999-01-11 | 2000-07-19 | Tokai Rubber Industries, Ltd. | Hose for transporting carbon dioxide refrigerant |
EP1113208A2 (en) * | 1999-12-27 | 2001-07-04 | Tokai Rubber Industries, Ltd. | Impermeable hose and a process for manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
US20030070720A1 (en) | 2003-04-17 |
JP2005504935A (en) | 2005-02-17 |
CA2458728A1 (en) | 2003-04-03 |
EP1436540A1 (en) | 2004-07-14 |
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