WO1995007176A1 - Tuyau d'essence et ses procede et appareil de production - Google Patents
Tuyau d'essence et ses procede et appareil de production Download PDFInfo
- Publication number
- WO1995007176A1 WO1995007176A1 PCT/JP1994/001501 JP9401501W WO9507176A1 WO 1995007176 A1 WO1995007176 A1 WO 1995007176A1 JP 9401501 W JP9401501 W JP 9401501W WO 9507176 A1 WO9507176 A1 WO 9507176A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- tubular inner
- fluororesin
- inner layer
- fuel hose
- Prior art date
Links
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Classifications
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
-
- 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
- F16L11/045—Hoses, i.e. flexible pipes made of rubber or flexible plastics with four or more layers without reinforcement
-
- 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
- F16L11/125—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 non-inflammable or heat-resistant hoses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/12—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
- F16L11/127—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 electrically conducting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2021/00—Use of unspecified rubbers as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/005—Hoses, i.e. flexible
-
- 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
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/202—Conductive
-
- 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
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/08—Dimensions, e.g. volume
- B32B2309/10—Dimensions, e.g. volume linear, e.g. length, distance, width
- B32B2309/105—Thickness
-
- 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
- B32B2319/00—Synthetic rubber
-
- 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
- B32B2327/00—Polyvinylhalogenides
- B32B2327/12—Polyvinylhalogenides containing fluorine
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/131—Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
- Y10T428/1314—Contains fabric, fiber particle, or filament made of glass, ceramic, or sintered, fused, fired, or calcined metal oxide, or metal carbide or other inorganic compound [e.g., fiber glass, mineral fiber, sand, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/131—Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
- Y10T428/1317—Multilayer [continuous layer]
- Y10T428/1321—Polymer or resin containing [i.e., natural or synthetic]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1362—Textile, fabric, cloth, or pile containing [e.g., web, net, woven, knitted, mesh, nonwoven, matted, etc.]
- Y10T428/1366—Textile, fabric, cloth, or pile is sandwiched between two distinct layers of material unlike the textile, fabric, cloth, or pile layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
- Y10T428/1393—Multilayer [continuous layer]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31725—Of polyamide
- Y10T428/31739—Nylon type
- Y10T428/31743—Next to addition polymer from unsaturated monomer[s]
Definitions
- TECHNICAL FIELD A fuel hose, a method for producing the same, and an apparatus used for the same
- the present invention relates to a fuel hose used for a fuel pipe of an automobile or the like. More specifically, the present invention relates to a fuel hose composed of a fluororesin inner tube layer and a thermoplastic resin layer or a rubber layer. The present invention relates to a fuel hose having a high adhesive strength between the two layers, a fuel hose, a method for producing the same, and a reduced-pressure plasma processing apparatus used for the same.
- a fuel hose used for a fuel pipe of an automobile or the like has a multilayer structure in which various rubber layers and resin layers are combined.
- a two-layer fuel hose in which the inner layer is formed of a fluororesin and the outer layer of the inner layer is formed by laminating a thermoplastic resin layer or a rubber layer is awarded.
- the fluororesin has corrosion resistance to chemicals and gasoline, and also has excellent resistance to sour gasoline generated by oxidizing gasoline (sour gasoline resistance). This is because it is the most suitable as a material for forming.
- thermoplastic resin layer or the like is formed as a reinforcing layer of a hose, and thereby imparts mechanical properties such as abrasion resistance to the fuel hose.
- a special fluororesin whose surface to be joined to the thermoplastic resin layer or the like is modified is used instead of a general fluororesin. This is because the adhesiveness of a general fluororesin to other constituent materials is extremely low, and thus, for example, the two layers do not adhere firmly only by an adhesive treatment using an adhesive.
- fuel hoses are required to have an initial adhesive strength of 1.2 M / mm or more (adhesive strength before using fuel hoses), which is higher than that of general resin hoses.
- Conventional surface-modified fluororesins include, for example, the following three types of fluororesins.
- Fluororesins having irregularities formed on the resin surface by sputtering for example, those described in Japanese Patent Publication No. 58-25742.
- the above surface-modified fluororesin has various problems. That is, the fuel hose using the fluororesin modified with the metal sodium complex of the above (1) has a problem that the adhesive force decreases with time. In particular, when irradiated with ultraviolet light, the adhesive strength is significantly reduced. Furthermore, the above-described modification method using a metal sodium complex requires a process such as immersion of a fluororesin in a metal sodium complex solution and washing, so that the treatment process is long and complicated, and the metal sodium complex solution The liquid also has safety concerns for the human body.
- the fluororesin subjected to the sputtering treatment of the above (2) becomes poor in adhesiveness when an adhesive having poor fluidity is used, and irregularities on the resin surface formed by the sputtering treatment easily disappear due to abrasion. There is a problem of doing. For this reason, when manufacturing a fuel hose using this sputtered fluororesin, it is necessary to pay close attention to its handling, and as a result, the manufacture of the fuel hose becomes inefficient.
- the surface-modified fluororesin has a common problem that the adhesiveness is poor when a thermoplastic resin or the like is directly bonded without using an adhesive.
- thermoplastic resin such as a polyamide resin
- the adhesive is applied.
- the conventional surface-modified fluororesin has poor adhesion due to the heat fusion method, so that the above-mentioned benefits caused by this cannot be enjoyed.
- the fuel hose obtained by using the resin does not have the initial adhesive strength that can be practically used.
- Fuel hoses manufactured by such conventional techniques have problems in work safety, manufacturing efficiency, and cost.
- a fuel hose having an inner layer made of a fluororesin has a high performance and a long life, and therefore it is strongly demanded to solve the above problems.
- the present invention has been made in view of such circumstances, and the initial adhesive strength of both the fluororesin inner layer and the thermoplastic resin layer is sufficiently high at 1.2 NZmm or more, and the production thereof is easy. Therefore, it is an object of the present invention to provide a fuel hose, a method of manufacturing the same, and a reduced-pressure plasma processing apparatus used for the same, in which there is no problem of work safety and cost. Disclosure of the invention
- the present invention provides a method in which heat is applied to the outer periphery of a fluororesin tubular inner layer.
- a fuel hose having a plastic resin layer or a rubber layer laminated thereon, wherein the fluororesin tubular inner layer has a ratio (FZC) of the number of fluorine atoms (F) to the number of carbon atoms (C) of 1
- a first aspect is a fuel hose formed by using a fluororesin of 1.6 or less, wherein the outer peripheral surface of the tubular inner layer made of the fluororesin is formed in the following treatment layer (A).
- the present invention provides a fuel hose in which a thermoplastic resin layer or a rubber layer is laminated on the outer periphery of a fluororesin tubular inner layer, wherein the fluororesin tubular inner layer has a fluorine atom number (F) It is formed using a fluororesin having a ratio (FZC) to the number of carbon atoms (C) of more than 1.6 and not more than 2.0, and the outer peripheral surface layer of the above-mentioned fluororesin tubular inner layer has the following (B)
- the second point is the fuel hose formed on the treated layer of
- the ratio of the number of fluorine atoms (F) to the number of carbon atoms (C) (FZC) is strong, less than 0.8, and the ratio of the number of oxygen atoms (0) to the number of carbon atoms (C) / C) is 0.08 or more.
- the present invention provides a method for producing a fuel hose in which a thermoplastic resin layer or a rubber layer is laminated on the outer periphery of a fluororesin tubular inner layer, wherein the fluororesin tubular inner layer is formed by extrusion molding. Forming, and applying a reduced pressure plasma treatment to the outer peripheral surface of the formed fluororesin tubular inner layer to process the outer peripheral surface portion of the fluororesin tubular inner layer.
- a method of manufacturing a fuel hose comprising a step of forming a physical layer and a step of forming a thermoplastic resin layer or a rubber layer on the outer periphery of the fluororesin tubular inner layer by extrusion.
- the present invention is a reduced pressure plasma processing apparatus comprising: a sealed chamber; an electrode for generating plasma in the sealed chamber; and a pressure reducing means for reducing the pressure in the sealed chamber.
- the sealed chamber 1 has an inlet and an outlet for introducing and leading a hose, and the outer diameter of the hose introduced and led to the reduced-pressure plasma processing apparatus is provided in the inlet and the outlet.
- a fourth gist is a reduced-pressure plasma processing apparatus in which a rubber elastic seal portion having a through hole with a smaller inner diameter is formed.
- the present inventors repeated a series of studies for the purpose of improving the adhesive strength of the fluororesin to other constituent materials.
- a detailed study was conducted on the mechanism of the development of the adhesiveness of the fluororesin.
- the proportion of oxygen atoms and fluorine atoms in the resin surface layer was large. I found that I was involved.
- the reduced-pressure plasma treatment makes it possible to set the abundance ratios of the above oxygen atoms and fluorine atoms (FZC ratio, OZC ratio) to the above specific ranges without using special equipment or equipment. I found it. Further, in this reduced-pressure plasma treatment, it was found that stable plasma could be easily generated by using the reduced-pressure plasma treatment apparatus having the rubber elastic body seal portion, and the above findings were combined. Have reached the present invention. According to the present invention, a high-performance fuel hose can be provided easily and at low cost.
- the fuel hose of the present invention has a fluororesin tubular inner layer formed using a specific fluororesin, and a thermoplastic resin layer or a rubber layer formed on the outer periphery of the tubular inner layer.
- a fluororesin tubular inner layer serving as the hose inner layer
- a fluororesin tubular inner layer X
- a fluororesin tubular inner layer Y
- the fluororesin tubular inner layer (X) is formed using a fluororesin having a ratio (FZC) of the number of fluorine atoms (F) to the number of carbon atoms (C) of 1.6 or less.
- the outer surface layer portion of the tubular inner layer is formed on the following treatment layer (A) .o
- fluororesin having an FZC ratio of 1.6 or less examples include ethylene-tetrafluoroethylene copolymer (ETFE), polyvinylidenefluoride (PVDF), polychlorinated trifluoroethylene (CTFE), and ethylene-chloroethylene.
- ETFE ethylene-tetrafluoroethylene copolymer
- PVDF polyvinylidenefluoride
- CTFE polychlorinated trifluoroethylene
- ethylene-chloroethylene ethylene-chloroethylene
- Copolymer of trifluoroethylene ECTFE
- copolymer of vinylidene fluoride and tetrafluoroethylene terpolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene
- terpolymer of vinylidene fluoride and hexafluoro Copolymers of polypropylene and the like can be mentioned, and these can be used alone or in combination of two or more.
- CTFE and ETFE because they have excellent gasoline permeation resistance, and ETFE is particularly preferable.
- a filler can be added to the fluororesin for the purpose of improving physical properties.
- fillers include titanium oxide, barium sulfate, calcium carbonate, silica, carbon black, magnesium gayate, aluminum gayate, zinc oxide, alumina, calcium sulfate, aluminum sulfate, calcium hydroxide, and aluminum hydroxide.
- Talc molybdenum dioxide, whiskers, short fibers, graphite, metal powders and the like.
- the mixing ratio of this filler is 100 parts by weight of fluororesin (hereinafter
- conductivity is imparted to the fluororesin forming the tubular inner layer made of the fluororesin in order to release static electricity generated when fuel (gasoline or the like) flows inside the hose.
- the purpose of imparting conductivity to the fluororesin can be achieved by, for example, blending a conductive agent with the fluororesin.
- the conductive agent include conductive agents such as carbon black and fine stainless steel fibers.
- the compounding ratio of the conductive agent is preferably set in a range of 0.5 to 30 parts with respect to 100 parts of the fluororesin.
- the full fluororesin tubular inner layer having a volume resistivity of the resulting fuel hose becomes less than 1 0 1 ⁇ ⁇ ⁇ cm, the static electricity generated by the discharge to the hose outside It is possible to escape. As a result, it is possible to prevent accidents such as bowing and burning of fuel due to static electricity.
- tubular inner layer In addition to forming a tubular inner layer (single layer) using only a fluororesin containing such a filler or a conductive agent, a layer formed from a fluororesin containing a filler or the like and a filler, etc. And a layer formed of a non-blended fluororesin may be laminated to form a tubular inner layer having a multilayer structure.
- the innermost layer which is in contact with the fuel is usually formed by using the conductive agent-blended fluororesin. It is not limited to.
- the innermost layer (without a conductive agent) of a multi-layered tubular structure made of a fluororesin is formed to be thin, and the layer formed directly on the outer periphery of the innermost layer is made of a fluororesin containing a conductive agent. Also, by forming the battery by using it, the generated static electricity can be released to the outside of the fuel hose.
- a tubular inner layer is formed by, for example, extrusion molding or the like using a fluororesin having an F / C ratio of 1.6 or less.
- the outer peripheral surface layer portion of the fluororesin tubular inner layer is strongly formed by, for example, a 'pressure plasma treatment described later, as described in (1) above.
- the range is from 1 to 0.5. That is, when the FZC ratio exceeds 1.12 and the OZC ratio is less than 0.08, the adhesiveness is insufficiently exhibited.
- the fluororesin tubular inner layer has a ratio of the number of fluorine atoms (F) to the number of carbon atoms (C) (FZC) of more than 1.6 and 2. It is formed using a fluororesin in a range of 0 or less, and the outer peripheral surface portion of the above-mentioned fluororesin tubular inner layer is formed on the following treatment layer (B).
- Oxygen atoms are distributed and the ratio of the number of fluorine atoms (F) to the number of carbon atoms (C) (F / C) and the ratio of the number of oxygen atoms (0) to the number of carbon atoms (C) (0 / C)
- the ratio of the number of fluorine atoms (F) to the number of carbon atoms (C) (FZC) is less than 0.8, and the ratio of the number of oxygen atoms (0) to the number of carbon atoms (C) (OZC) Is 0.08 or more.
- the ratio (OZC) to (C) is within the range represented by the following equation (1).
- Fluororesins having an F / C ratio of more than 1.6 and not more than 2.0 include polytetrafluoroethylene (PTFE), and copolymers of tetrafluoroethylene and hexafluoropropylene (FEP).
- PTFE polytetrafluoroethylene
- FEP hexafluoropropylene
- PFA perfluoroalkyl vinyl ether
- FEP a terpolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene is preferred because of its excellent resistance to gasoline permeation, and particularly preferred is vinylidene fluoride and terpolymer. It is a terpolymer of trafluoroethylene and hexafluoropropylene.
- the filler and the conductive agent described above can be added to the fluororesin for the purpose of improving physical properties and imparting conductivity. And this filler, conductive
- the compounding ratio of the agent and the mode of use of the fluororesin containing the filler and the conductive agent are the same as described above.
- the inner tube layer is formed by, for example, extrusion molding.
- the treatment layer (B) is formed on the outer peripheral surface portion of the fluororesin tubular inner layer by, for example, a reduced-pressure plasma treatment described later.
- the range of the FZC ratio and the OZC ratio is the range in which the above two ranges (a) and (b) are combined. Within this range, a treated layer having excellent adhesiveness can be obtained.
- the range of 0.8 to 1.8 is substituted for the FZC ratio.
- thermoplastic resin layer or the rubber layer is formed for imparting structural strength to the hose.
- the material for forming the thermoplastic resin layer is not particularly limited, and examples thereof include resins such as polyamide resins, polyester resins, and urethane resins, and modified resins obtained by modifying these resins. Among these, it is preferable to use a boriamid resin because of its excellent mechanical properties such as abrasion resistance.
- the boronamide resin include nylon 6, nylon 66, nylon 11, nylon 12, and the like, and these may be used alone or in combination of two or more. Among them, Nylon 11 and Nylon 12 are particularly excellent in properties such as wear resistance and moldability. Is preferred.
- plasticizer is added to the polyamide resin as needed to improve processing characteristics and flexibility.
- plasticizer include sulfonamides and oxybenzoic esters.
- the mixing ratio of this plasticizer is usually
- the amount is set to be 20 parts or less with respect to 100 parts of the boronamide resin.
- the rubber which is another material for forming the rubber layer of the fuel hose of the present invention, is not particularly limited.
- epichlorohydrin rubber CO
- ECO epichlorohydrin rubber
- ECO also known as CHC
- PVC vinyl
- CR chloroprene rubber
- chlorosulfonation Examples include polyethylene (CSM), chlorine-polyethylene (CPE), and ethylene-propylene-gen rubber (EPDM).
- ECO, NBR / PVC, CSM, etc. are preferable because of their excellent properties such as heat resistance and ozone resistance.
- the fuel hose of the present invention uses the above-mentioned material, for example, by forming the outer peripheral surface layer of a fluororesin tubular inner layer into a treatment layer by low-pressure plasma treatment, and forming a thermoplastic resin layer or It can be produced by forming a rubber layer.
- a method for manufacturing this fuel hose will be described below.
- FIG. 2 shows a reduced pressure plasma processing apparatus 30 used in the present invention.
- the fuel hose of the present invention is produced, for example, as follows.
- the mandrel 11 is drawn from the mandrel supply device 10 to the inner extruder 20 at a speed of 3 to 2 minutes, and the fluororesin is extruded onto the mandrel 11 by the inner extruder 20 so that the fluorine is extruded.
- a resin-made tubular inner layer 21 is formed. This tubular inner layer is usually set to an inner diameter of 4 to 5 Omm and a thickness of about 0.05 to 1 mm.
- the mandrel 11 on which the inner layer 21 is formed passes through the seal portion 13 and is led to the reaction chamber 32 of the reduced-pressure plasma processing apparatus 30.
- the inside of the reaction chamber 32 is depressurized by a vacuum device (vacuum pump) 34 in order to generate stable plasma, and then a discharge gas is introduced by a gas supply device 35.
- the pressure is maintained at rr.
- the discharge gas it is preferable to use Ar gas alone, but a mixed gas of Ar gas and N 2 gas or N 2 gas alone may be used.
- a plasma treatment zone is provided between the electrodes 32 a, and the mandrel 1 having the fluororesin tubular inner layer 21 formed therein is led between the electrodes 32 a, and is directed to the outer peripheral surface of the tubular inner layer 21.
- Plasma processing is performed.
- a high-frequency power supply 40 and a matching box 41 are used to apply a matched high-frequency high-output current to the electrode 32a for a predetermined time, thereby causing a discharge between the electrodes. This is performed by ionizing the working gas to generate a plasma state.
- the frequency at this time is in the range of 0.1 to 100 MHz, preferably in the range of 1 to 100 MHz.
- the output of the high-frequency power supply is in the range of 2 to 300 W, preferably 5 to 200 W.
- the treatment time is appropriately determined depending on the type and size of the fluororesin, but is usually in the range of 2 to 180 seconds, and preferably in the range of 5 to 60 seconds.
- the outer peripheral surface portion of the fluororesin tubular inner layer can be used as the specific treatment layers (A) and (B).
- the plasma processing conditions for forming the processing layers (A) and (B) are appropriately determined depending on the type of the fluororesin used and the like. Further, as the reduced-pressure plasma treatment for forming the treatment layers (A) and (B), ⁇ -discharge plasma treatment in an atmosphere containing Ar gas is preferable.
- the treatment layers (A) and ( ⁇ ) can be easily formed.
- the reduced pressure plasma processing apparatus used is not high-performance, and has an advantage that a normal one can be used.
- the containing A r gas, other A r gas alone, can be used A r gas and N 2 gas, H 2 gas, mixed gas of 0 2 gas.
- the ratio of Ar gas is preferably 50 volumes or more of Ar gas with respect to the whole gas.
- the mandrel 11 passes through the sheath 13 and is led out of the reduced-pressure plasma treatment device 30.
- the thermoplastic resin or rubber is applied to the tubular inner layer 21 by the layer extruder 50. Extruded to the outer periphery of the substrate to form a layer 51.
- the above-described heat fusion method is applied. Can be used. That is, usually, when performing extrusion molding, thermoplastic resin etc.
- the thickness of the layer 51 is in the range of 0.2 to 4 mm, preferably in the range of about 0.5 to 3 mm.
- the mandrel 11 on which the tubular inner layer 21 and the layer 51 are formed is wound by the mandrel winding machine 60. Through such a series of continuous steps, the fuel hose of the present invention is manufactured.
- the method for producing a fuel hose of the present invention can produce a fuel hose without using the mandrel.
- the mandrel is used in order to proceed the process while maintaining the shape of the hose.
- the fluororesin tubular inner layer 21 of the fuel hose of the present invention has a diameter of 0.05 to 1 mm. Due to its thinness of 0.00 mm, the use of a mandrel will cause crushing and the hollow state cannot be maintained.
- the method for manufacturing the fuel hose of the present invention is a method of performing a low-pressure plasma treatment. That is, the inside of the fluororesin tubular inner layer 21 is at atmospheric pressure, while the inside of the reduced-pressure plasma processing apparatus 30 is in a low pressure condition of 0.05 to 8 T0 rr as described above. Therefore, when the tubular inner layer 21 is introduced into the reduced-pressure plasma treatment apparatus 30, the pressure difference causes the fluororesin tubular inner layer 21 to maintain a hose shape without a mandrel.
- the fluororesin is extruded from the inner layer extruder 20 without using the mandrel feeder 11 to form the fluororesin tubular inner layer 21. Is immediately introduced into the low-pressure plasma processing apparatus 30.
- a fuel hose can be manufactured without using a mandrel. As described above, if the use of the mandrel is omitted, the step of removing the mandrel from the hose becomes unnecessary, and the production efficiency of the fuel hose is further improved.
- a fluororesin is extruded from the inner layer extruder 20 to form a fluororesin tubular inner layer 21, which is immediately wound around a winder (not shown). Then, the tubular inner layer 21 wound by the winding machine may be supplied again to the low-pressure plasma processing apparatus, and subjected to the low-pressure plasma processing and a layer forming process such as a thermoplastic resin layer.
- the basic structure of the fuel hose of the present invention is a two-layer structure in which a thermoplastic resin layer 51 or a rubber layer 51 is formed on the outer periphery of a fluororesin tubular inner layer 21.
- a multi-layer fuel hose such as a three-layer or four-layer structure, in which a reinforcing yarn layer or an outer layer is further formed on the layer, may be used.
- a layer 51 is formed on the treatment layer 21 a of the tubular inner layer 21 made of a fluororesin, and is formed around the outer periphery of the layer 51.
- a fuel hose having a rubber outer layer 61 or an elastomer outer layer 61 may be used.
- the material for forming the rubber outer layer 61 include the aforementioned CSM, CR, NBR / PVC, ECO, and EPR.
- the material for forming the elastomer outer layer 61 include thermoplastic elastomers such as urethane-based, olefin-based, nitrile-based, and amide-based thermoplastic elastomers.
- This rubber outer layer 6 1 or elastomeric outer layer 6 The thickness of 1 is usually about 0.5 to 5.0 mm, preferably about 0.5 to 3.0 mm.
- the fuel hose having the outer layer 61 has fire resistance and chipping resistance in addition to the gasoline permeability and corrosion resistance characteristics of the two-layer fuel hose.
- a layer 51 is formed on the processing layer 21 a of the fluorine resin tubular inner layer 21, and the layer 51 is formed.
- a fuel hose in which a reinforcing thread layer 71 is formed on the outer periphery, and a rubber outer layer 61 or an elastomer outer layer 61 is formed on the outer periphery of the reinforcing thread layer 71 is exemplified.
- the reinforcing thread layer 71 is formed by a braiding machine using a thread of a natural material such as hemp or cotton, a synthetic thread such as a polyester thread or a vinylon thread, or a metal thread such as a wire. By forming the reinforcing yarn layer 71 in this way, the pressure resistance of the fuel hose is improved.
- the thickness and material of the outer layer 61 of the four-layer fuel hose are the same as the outer layer 61 of the three-layer fuel hose.
- a braiding machine or an extruder is disposed after the layer extruder 50 shown in FIG. Through the extrusion process, it is possible to manufacture a multi-layer fuel hose having the reinforcing yarn layer and the outer layer formed thereon.
- a reduced pressure plasma treatment is performed on the outer peripheral surface portion of the inner wall of the fluorine resin pipe to form a treated layer, and then the treated layer is formed on the treated layer.
- a layer made of a thermoplastic resin or a layer made of rubber may be formed.
- an adhesive application device (not shown) is disposed between the reduced-pressure plasma processing device 30 and the layer extruder 50 to continuously perform the adhesive application process. Can be applied.
- the use of the adhesive further improves the adhesive strength of the fuel hose. This effect of improving the adhesive strength is remarkable when the rubber layer is formed.
- FIG. 2 a reduced pressure plasma processing apparatus having an internal electrode (see FIG. 2) has been described, but the present invention is not limited to this.
- FIG. 4 a reduced-pressure plasma processing device having an induction coil electrode 32b on the outer periphery of the plasma processing device 30 is exemplified.
- FIG. 4 the same parts as those in FIG. 2 are denoted by the same reference numerals.
- the plasma treatment of the present invention is performed in a reduced pressure state lower than the atmospheric pressure, and if the sealability of the sealing portion 13 of the reduced pressure plasma processing apparatus 30 is poor, the reduced pressure state in the apparatus is reduced. Therefore, it becomes difficult to control the temperature to a constant state, and stable plasma cannot be generated. This problem is particularly acute when continuously producing long hoses.
- a conventional reduced-pressure plasma processing system a batch-type process is performed, or a pressure-reducing zone using a differential exhaust system is provided in multiple stages in the hose introduction and discharge sections of the system. Had to be installed. In this case, the former batch-type treatment significantly lowers the production efficiency.
- a special device (decompression zone) needs to be installed in the decompression plasma processing device.
- equipment costs are required. Therefore, in the present invention, by forming the seal portion 13 of the low-pressure plasma processing apparatus 30 with a rubber elastic body, the airtightness of the low-pressure plasma processing apparatus 30 is maintained, and the above-described problem of reduction in manufacturing efficiency and equipment cost are reduced. Has solved the problem.
- JISA hardness of 45 to 80
- the type of the rubber elastic body is not particularly limited, but good results can be obtained by using silicone rubber or NBR.
- the seal portion 13 formed by using a rubber elastic body of such a suitable type and hardness is introduced into a reduced-pressure plasma processing apparatus 30 at a constant speed, and is drawn out of a hose (made of fluororesin). Because of the excellent adherence following property to the tubular inner layer 21), the airtightness in the reduced-pressure plasma processing apparatus is maintained even if the introduction and extraction speed of the hose is set to a high speed (about 5 to 2 Om / min). By increasing the hose introduction and discharge speed in this way, it is possible to improve the efficiency of fuel hose production.
- the shape of the rubber elastic body seal portion is, for example, a seal 13a and a seal 13a shown in FIG. And a seal 13b shown in FIG.
- 21 denotes a fluororesin tubular inner layer.
- the outer shape of the rubber elastic body (seal 13a) is substantially frustoconical and the entire shape is cup-shaped, the contact area with the hose (fluorine resin tubular inner layer) becomes smaller. As a result, the contact friction is reduced, and the hose can be smoothly introduced into or out of the device, and the airtightness of the device can be sufficiently maintained.
- the arrow shows the hose traveling direction.
- the rubber elastic body (seal 13b) may be formed in a disk shape. As described above, when the seal portion is formed using the disc-shaped rubber elastic body, the airtightness of the low-pressure plasma processing apparatus 30 can be further improved.
- the seal portion may be a seal chamber.
- seals 13 made of a disc-like rubber elastic body are formed at both ends of the cylindrical body 81.
- a pipe 17a is connected to the body of the tubular body, and a vacuum pump (not shown) is connected to the seal chamber via the pipe 17a.
- reference numeral 21 denotes a fluororesin tubular inner layer.
- the pressure in the seal chamber is reduced by the above-described vacuum pump to substantially the same reduced pressure as that of a preliminary vacuum chamber described later. As described above, by taking the form of the seal section as the seal chamber, the airtightness of the reduced-pressure plasma processing apparatus is improved.
- a preliminary vacuum chamber 31 may be provided with the seal portion 13 having two stages.
- This preliminary vacuum chamber 31 is an airtight space separated from the reaction chamber 32 by a partition plate 16, and the preliminary vacuum chamber 31 is connected to a vacuum pump 36 via a pipe 17.
- reference numeral 18 denotes a valve provided in the middle of the pipe 17.
- the seal portion 13 through which the hose (the tubular inner layer 21 made of fluororesin) of the spare vacuum chamber enters and exits is formed by the rubber elastic seal described above.
- the shape of the rubber elastic seal is not particularly limited, and includes the above two types of shapes 13a and 13b and the form of the seal chamber.
- This is a seal 13b (see Fig. 7) made of an elastic rubber material.
- FIG. 5 the same parts as those in FIG. 2 are denoted by the same reference numerals.
- the introduction and discharge of the fluororesin tubular inner layer 21 to and from the plasma processing apparatus 30 through the preliminary vacuum chamber 31 are performed as shown in FIG. First, in the case of introduction, the fluororesin tubular inner layer 21 is introduced into the preliminary vacuum chamber 31 from one end side of the preliminary vacuum chamber 31 through the seal portion 13 and passes therethrough. 31 is introduced into the reduced-pressure plasma processing apparatus 30 through the seal portion 13 on the other end side.
- the derivation of the tubular inner layer 21 is performed in the reverse order.
- the pre-vacuum chamber is gently depressurized by the action of the vacuum pump 36 through the pipe 17. It is about 0.1 to 1 OTo rr).
- the intrusion of the external air from the hose inlet / outlet into the reduced-pressure plasma processing apparatus 30 can be completely prevented.
- the reduced pressure in the reaction chamber 32 can be accurately controlled, and stable plasma can be generated.
- the outer peripheral surface layer of the fluorine resin tubular inner layer is treated with the treatment layers (A) and (B) having a specific F / C ratio and OZC ratio.
- the FZC ratio and OZC ratio refer to values measured by ESCA as described above.
- This ESCA is a method for analyzing the outer peripheral surface of a fluororesin tubular inner layer that has been subjected to a low-pressure plasma treatment using a photoelectron spectrometer (for example, ES-200, manufactured by Kokusai Electric Inc.).
- the measurement conditions of this photoelectron spectrometer are, for example, as shown below.
- a strong surface layer is formed by a crosslinking reaction between carbon radicals.
- carbon radicals combine with oxygen in the air to form functional groups such as carboxyl, aldehyde, and ketone groups.
- the treated layer in which these functional groups are present has remarkably improved affinity for thermoplastic resins and rubbers such as polyamide resins having an amide group in the molecular skeleton. Thus, it is considered that the adhesiveness is developed in the surface layer portion of the fluororesin.
- the fuel hose of the present invention has a thermoplastic resin layer or a rubber layer formed on the outer periphery of a fluororesin tubular inner layer, wherein the fluororesin tubular inner layer has a specific range. It is formed by using a fluororesin having an FZC ratio, and the outer peripheral surface portion of the tubular inner layer of the parenthesis is formed into a treatment layer set to a specific range of the FZC ratio and the OZC ratio. Since such a fluororesin having a treatment layer having a specific atomic composition is used, the fuel hose of the present invention has an initial structure in which the fluororesin tubular inner layer and the thermoplastic resin layer or the rubber layer have an initial thickness of 2 N / mm or more.
- the fuel hose of the present invention eliminates the occurrence of accidents such as blockage of the fuel hose due to separation of the fluororesin tubular inner layer from the thermoplastic resin layer or the like when feeding fuel such as gasoline.
- a layer formed of a boriamid resin having excellent mechanical properties such as abrasion resistance is formed as a layer formed on the outer periphery of the fluororesin tubular inner layer, the durability and the like of the fuel hose can be improved.
- the thickness of the fluororesin tubular inner layer is made as thin as about 0.05 to 1.0 Omm, the cost of fluororesin can be saved, and the cost of the fuel hose can be reduced.
- an adhesive layer is provided between the fluororesin tubular inner layer and the layer formed on the outer periphery thereof, the adhesive strength of the fuel hose can be further improved.
- a low-pressure plasma treatment is performed on the outer peripheral surface layer to form a treatment layer.
- a method of forming a thermoplastic resin layer or a rubber layer on the above layer can be performed as a continuous process, and between each step is a continuous process. Since the method can be a process, the method for producing a fuel hose of the present invention is a method with excellent production efficiency.
- the above thermoplastic resin or the like is heated and melted and directly fused to the outer periphery (processed layer) of the fluororesin tubular inner layer.
- the thermoplastic resin layer and the like can be formed.
- the reduced-pressure plasma processing apparatus used in the method of manufacturing a fuel hose of the present invention has its seal portion devised. That is, in the reduced pressure plasma processing apparatus of the present invention, the seal portion is formed using a rubber elastic body in order to maintain the reduced pressure state in the apparatus. Therefore, this reduced-pressure plasma processing apparatus is capable of continuous processing, and does not require special equipment (such as a reduced-pressure zone) as in a conventional plasma processing apparatus. Even so, stable plasma treatment can be performed on the fluororesin tubular inner layer. If the rubber elastic body seal portion is formed using a rubber elastic body having a hardness of 45 to 80 (JISA), the airtightness of the device becomes more excellent and the fluororesin tubular member is formed.
- JISA hardness of 45 to 80
- this seal part is a seal chamber as shown in Fig. 14, the depressurized state in the depressurized plasma processing apparatus becomes extremely stable, and plasma under favorable conditions can be generated stably for a long time. It becomes possible.
- FIG. 3 is a schematic diagram illustrating an example in which a cooling zone is provided in the fuel hose manufacturing method of the present invention.
- the pressure reducing brass having a dielectric coil electrode It is a schematic diagram explaining an example using a mask processing device.
- FIG. 3 is a schematic diagram illustrating an example in which a reduced-pressure plasma processing apparatus having a preliminary vacuum chamber is used in the method of manufacturing a fuel hose of the present invention.
- FIG. 2 is a configuration diagram illustrating a seal portion of the reduced-pressure plasma processing apparatus of the present invention.
- FIG. 2 is a configuration diagram showing an example in which an outer layer is provided in the fuel hose of the present invention.
- FIG. 3 is a configuration diagram showing an example in which a reinforcing yarn layer and an outer layer are provided in the fuel hose of the present invention.
- FIG. 3 is a graph showing the relationship between the FZC ratio and the OZC ratio in the treated layer of the fluororesin tubular inner layer in the fuel hose of the present invention.
- FIG. 3 is a graph showing a relationship between an FZC ratio and an OZC ratio in a treatment layer of a fluororesin tubular inner layer in the fuel hose of the present invention.
- FIG. 3 is a graph showing a relationship between an FZC ratio and an OZC ratio in a treatment layer of a fluororesin tubular inner layer in the fuel hose of the present invention.
- ETFE was used as the material for forming the fluororesin tubular inner layer
- nylon 12 was used as the material for forming the layer formed on the outer periphery of the tubular inner layer.
- a fuel hose was manufactured using the reduced-pressure plasma processing apparatus shown in FIG.
- the mandrel 11 was supplied from the mandrel supply device 10 to the inner layer extruder 20 at a speed of 1.0 mZ. Then, ETEF was extruded onto the outer peripheral surface of the mandrel 11 by the inner layer extruder 20 to form an ETFE tubular inner layer 21 having an inner diameter of 6.0 mm and a thickness of 0.25 mm. Next, the ETFE tubular inner layer 21 was introduced to the discharge chamber 32 in the reduced-pressure plasma processing apparatus 30.
- the discharge chamber 32 is reduced in pressure to 1 0- 3 To rr by the vacuum pump 34, and is supplied discharge gas from the gas supply unit 35 to a predetermined depressurized state.
- the discharge gas and the reduced pressure state were as shown in Table 1 below in each example.
- an ETFE tubular inner layer 21 is introduced between the electrodes 32 a of the discharge chamber 32, and a high-frequency power of 13.56 MHz and an output of 10 W whose impedance is matched by the high-frequency power supply 40 and the matching box 41 is supplied.
- a plasma is generated by applying a voltage to the electrode 32a to generate a single discharge, and the outer peripheral surface of the ETFE-made tubular inner layer 21 is subjected to a plasma treatment, and a treated layer 21a (see FIG. 1) Was formed. After this plasma treatment, the ETFE-made tubular inner layer 21 was led out of the reduced-pressure plasma processing apparatus 30 and supplied to the layer extruder 50.
- a 0.72 mm-thick nylon 12 layer 51 is directly formed on the treated layer of the ETFE inner tube 21 by the layer extruder 50, and the mandrel winding machine 60 And the fuel hoses of Examples 1 to 5 were obtained.
- the layer 51 is formed of nylon 12 with 240. It was formed by an extruder 50 set to C.
- ETFE was used as the fluororesin tubular inner layer
- EC 0 was used as a material for forming a layer formed on the outer periphery of the tubular inner layer.
- a hose was manufactured. In this production, Ar gas was used as the discharge gas for the plasma treatment, the reduced pressure state was 0.05 Torr, and the thickness of the ECO layer was 2 mm. After the layer was formed by the layer extruder 50, the hose was wound around the mandrel winding machine 60, and then the EC layer 51 was vulcanized at 160 ° C for 45 minutes. . Except for these conditions, a fuel hose of Example 6 was produced in the same manner as in Examples 1 to 5 described above. Hidden example 1]
- a fuel hose was produced in the same manner as in Example 1 except that the reduced pressure plasma treatment was not performed on the ETFE tubular inner layer 21.
- a fuel hose was produced in the same manner as in Example 3, except that the reduced pressure state in the reduced pressure plasma treatment was changed to 10 T0 rr.
- a fuel hose was prepared in the same manner as in Examples 1 to 5 except that CTFE was used as the material for forming the fluororesin tubular inner layer, and the type of discharge gas and the reduced pressure were as shown in Table 2 below. Produced.
- a fuel hose was produced in the same manner as in Examples 7 and 8, except that the reduced pressure plasma treatment was not performed on the CTFE tubular inner layer 21.
- a fuel hose was produced in the same manner as in Example 7, except that the reduced pressure state in the reduced pressure plasma treatment was set to 1 OTorr. [Examples 9 to 14]
- a fuel hose was prepared in the same manner as in Examples 1 to 5 above, except that FEP was used as a material for forming the fluororesin tubular inner layer, and the type of discharge gas and the reduced pressure were as shown in Table 3 below. Produced.
- a fuel hose was manufactured by a reduced-pressure plasma processing apparatus shown in FIG. 2, using FEP as a fluororesin tubular inner layer and ECO as a material for forming a layer formed on the outer periphery of the tubular inner layer.
- Ar gas was used as a discharge gas for the plasma treatment
- the reduced pressure state was 0.05 T Torr
- the thickness of the EC ⁇ layer was 2 mm.
- the hose is wound on a mandrel winding machine 60, and then the ECO layer is vulcanized at 160 for 45 minutes.
- a fuel hose was manufactured in the same manner as in Examples 9 to 14 described above.
- a fuel hose was manufactured in the same manner as in Examples 9 to 14, except that the reduced-pressure plasma treatment was not performed on the FEP tubular inner layer 21.
- a fuel hose was manufactured in the same manner as in Example 11 except that the reduced pressure state in the reduced pressure plasma treatment was set to 10 T 0 rr.
- a fuel hose was produced in the same manner as in Example 15 except that the reduced pressure state in the reduced pressure plasma treatment was set to 10 T 0 rr.
- Example 16 A fuel hose was produced in the same manner as in Example 1 except that the reduced pressure in the reduced pressure plasma treatment was set to 5 T 0 rr.
- a fuel hose was manufactured in the same manner as in Example 6, except that the reduced pressure state in the reduced pressure plasma treatment was set to 5 T rr.
- a fuel hose was produced in the same manner as in Example 9, except that the reduced pressure state in the reduced pressure plasma treatment was changed to 5 T rr.
- a fuel hose was produced in the same manner as in Example 15 except that the reduced pressure state in the reduced pressure plasma treatment was changed to 5 T rr.
- the measurement of the adhesive strength was performed according to JISK6301. That is, as shown in Fig. 10, the fuel hose is cut into a ring shape with a length (L) of 10 mm. The test sample was further cut in the longitudinal direction to obtain a test sample. The inner layer 21 and the layer 51 were partially peeled off from the cut surface of this test sample, and each of these edges was fixed with a clamping jig of a tensile tester. A tensile test was performed. The load obtained by this tensile test was defined as the adhesive strength between the two layers.
- test sample used for the measurement of the adhesive strength was immersed in gasoline at 40 for 168 hours, and then formed on the outer periphery of the fluororesin tubular inner layer in the same manner as the adhesive strength measurement described above. The adhesive strength with the layer was measured.
- the fluororesin tubular inner layer and the outer periphery thereof are formed in the same manner as in the measurement of the adhesive strength.
- the adhesive strength with the layer was measured.
- the fuel hoses of Examples 1 to 19 all have a sufficient initial adhesive strength (1) as the fuel hose because the F / C ratio and the 0 / C ratio are all within the predetermined ranges. 2 N / mm or more). In addition, it had sufficient adhesive strength even after gasoline immersion or heat aging. From this, it can be said that the fuel hose of the present invention has a structural strength that can be put to practical use and has extremely high performance without the risk of pipe blockage.
- the fuel hoses of Comparative Examples 1 to 7 whose F / C ratio and OZC ratio are out of the predetermined range have remarkably low adhesive strength (less than 1.Z NZmni), gasoline immersion treatment and heat aging treatment. As a result, the adhesive strength further decreased, and in particular, in the fuel hoses of Comparative Examples 1, 3, and 5, the separation between the tubular inner layer and the layer formed on the outer periphery occurred.
- ⁇ indicates that the adhesive strength is 1.2 N / mm or more
- x indicates that the adhesive strength is less than 1.2 N / mm.
- the upper part (A) separated by a one-dot chain Di indicates the range of the treatment layer (A) in the present invention (corresponding to the invention described in claim 1). As shown in the figure, it can be seen that the adhesive strength was 1.2 N / mm or more in the range of the treatment layer (A).
- ⁇ indicates that the adhesive strength is 1.2 NZmm or more
- x indicates that the adhesive strength is less than 1.2 SNZmm.
- the upper part (A) separated by a dashed line indicates the range of the treatment layer (A) (corresponding to the invention described in claim 1) in the present invention. As shown in the figure, in the range of the treatment layer (A), it can be seen that the adhesive strength was 1. SNZnim or more.
- ⁇ indicates that the adhesive strength is 1.2 NZmm or more
- X indicates that the adhesive strength is less than 1.2 N / mm.
- the upper part (B) separated by a dashed line indicates the range of the treatment layer (B) in the present invention (corresponding to the invention described in claim 6).
- the left part separated by a dotted line in the range indicated by the above (B) indicates the range (a) of the range of the treatment layer (B) of the present invention, and is separated by the dotted line.
- the right part shows the range (b) of the range of the treatment layer (B) of the present invention.
- the oblique portion of the dashed line is the boundary line represented by the above equation (1).
- the adhesive strength was 1.2 NZmm or more in the range of the treatment layer (B).
- Example 20 A fuel hose was manufactured in the same manner as in Example 1 except that the mandrel was not used. As a result, although the thickness of the ETFE tubular inner layer was as thin as 0.25 mm, the hose shape was maintained without crushing or the like. Then, the reduced-pressure plasma treatment of the tubular inner layer made of ETFE and the formation of the layer on the circumference of the tubular inner layer could be performed without any problem. Since there was no mandrel extraction process, fuel hoses could be manufactured efficiently.
- the outer diameter of the fluororesin tubular inner layer was 6.5 mm.
- the shape, rubber hardness, rubber material, and mandrel supply speed of the rubber elastic seal were as shown in Tables 10 and 11 below.
- a fuel hose was produced in the same manner as in Example 1 except for these conditions.
- the state of the plasma at the time of producing the fuel hose was evaluated, and the bonding strength of the obtained fuel hose was measured by the method described above. The results are shown in the same table.
- “ ⁇ ⁇ ” indicates that stable plasma was generated due to the occurrence of glow discharge, and “X” indicates that the plasma state was abnormal.
- the adhesive strength those having an adhesive strength of 1.2 N / mm or more are indicated by “ ⁇ ”, and those having an adhesive strength of less than 1.S NZrnm are indicated by “X”.
- the reduced-pressure plasma processing apparatus of the present invention is excellent in airtightness, and can perform sufficient plasma processing even if the fluororesin tubular inner layer is introduced and led out at a high speed. It can be said that.
- a fuel hose was manufactured using a reduced-pressure plasma processing apparatus in which the seal portion was a seal chamber (preliminary vacuum chamber 31) as shown in FIG.
- the rubber member used for the seal part 13 of the preliminary vacuum chamber 31 was made of silicone rubber having a hardness of 60 (JIS).
- a fuel hose was manufactured in the same manner as in Examples 22 to 35 described above. Then, in the same manner as above, the state of the plasma at the time of producing the fuel hose was evaluated, and the adhesive strength of the obtained fuel hose was measured. As a result, the plasma state at the time of producing the fuel hose was extremely stable, and the adhesive strength of the obtained fuel hose was 1.2 NZmm or more.
- Seal shape A is the shape shown in FIG. 6, and seal shape B is the shape shown in FIG.
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Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/424,469 US5718957A (en) | 1993-09-10 | 1994-09-09 | Fuel hose |
DE69430050T DE69430050D1 (de) | 1993-09-10 | 1994-09-09 | Benzinschlauch verfahren und vorrichtung zu dessen herstellung |
US09/506,201 USRE38087E1 (en) | 1993-09-10 | 1994-09-09 | Fuel hose and method of its production |
EP19940926384 EP0676276B1 (en) | 1993-09-10 | 1994-09-09 | Fuel hose, process for producing the same, and apparatus therefor |
KR1019950701822A KR100311858B1 (ko) | 1993-09-10 | 1994-09-09 | 연료호스및그제법및여기에이용하는장치 |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
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JP22598093 | 1993-09-10 | ||
JP5/225980 | 1993-09-10 | ||
JP5/307414 | 1993-11-12 | ||
JP30741493 | 1993-11-12 | ||
JP33924593 | 1993-12-03 | ||
JP5/339245 | 1993-12-03 |
Publications (1)
Publication Number | Publication Date |
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WO1995007176A1 true WO1995007176A1 (fr) | 1995-03-16 |
Family
ID=27331114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP1994/001501 WO1995007176A1 (fr) | 1993-09-10 | 1994-09-09 | Tuyau d'essence et ses procede et appareil de production |
Country Status (6)
Country | Link |
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US (3) | USRE38087E1 (ja) |
EP (1) | EP0676276B1 (ja) |
KR (1) | KR100311858B1 (ja) |
CN (1) | CN1059452C (ja) |
DE (1) | DE69430050D1 (ja) |
WO (1) | WO1995007176A1 (ja) |
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EP0814917A1 (en) * | 1994-02-23 | 1998-01-07 | Pilot Industries, Inc. | Fluoropolymer composite tube and method of preparation |
US6576313B2 (en) | 2001-03-01 | 2003-06-10 | Tokai Rubber Industries, Ltd. | Bonded laminate structure, hose containing the bonded laminate structure, and methods for producing the same |
JPWO2006059697A1 (ja) * | 2004-12-03 | 2008-06-05 | 旭硝子株式会社 | エチレン−テトラフルオロエチレン系共重合体成形物およびその製造方法 |
JP2011007240A (ja) * | 2009-06-24 | 2011-01-13 | Nichirin Co Ltd | 車輌用ホース |
JP2014193607A (ja) * | 2013-03-28 | 2014-10-09 | Evonik Industries Ag | ポリアミド層を有する多層管 |
JP2021059066A (ja) * | 2019-10-07 | 2021-04-15 | Agc株式会社 | 積層体 |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0814917A1 (en) * | 1994-02-23 | 1998-01-07 | Pilot Industries, Inc. | Fluoropolymer composite tube and method of preparation |
EP0814917A4 (en) * | 1994-02-23 | 1999-06-23 | Pilot Ind Inc | COMPOSITE FLUOROPOLYMER TUBE AND ITS MANUFACTURE |
US6576313B2 (en) | 2001-03-01 | 2003-06-10 | Tokai Rubber Industries, Ltd. | Bonded laminate structure, hose containing the bonded laminate structure, and methods for producing the same |
JPWO2006059697A1 (ja) * | 2004-12-03 | 2008-06-05 | 旭硝子株式会社 | エチレン−テトラフルオロエチレン系共重合体成形物およびその製造方法 |
JP2011007240A (ja) * | 2009-06-24 | 2011-01-13 | Nichirin Co Ltd | 車輌用ホース |
JP2014193607A (ja) * | 2013-03-28 | 2014-10-09 | Evonik Industries Ag | ポリアミド層を有する多層管 |
JP2021059066A (ja) * | 2019-10-07 | 2021-04-15 | Agc株式会社 | 積層体 |
Also Published As
Publication number | Publication date |
---|---|
KR100311858B1 (ko) | 2001-12-17 |
EP0676276A4 (en) | 1997-01-15 |
CN1059452C (zh) | 2000-12-13 |
DE69430050D1 (de) | 2002-04-11 |
USRE38087E1 (en) | 2003-04-22 |
EP0676276A1 (en) | 1995-10-11 |
US5718957A (en) | 1998-02-17 |
EP0676276B1 (en) | 2002-03-06 |
US5919326A (en) | 1999-07-06 |
CN1115568A (zh) | 1996-01-24 |
KR950704111A (ko) | 1995-11-17 |
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