JP2001241572A - Rubber hose and manufacturing process of rubber hose - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rubber hose which is possible to improve barrier property of coolant, flexibility vibration absorption property and moisture-penetration- proof property, as a hose. SOLUTION: The rubber hose is composed of an inner pipe 4, a thermoplastic resin layer which is provided on both sides of thin layer of aluminum alloy formed on exterior of the inner pipe 4, a barrier layer 6 which is formed by wrapping an aluminum laminate film 5 spirally or longitudinally on both sides of which are coated with vulcanized adhesive, a fiber reinforced layer 7 arranged on the outside of the barrier layer 6, and an outer skin rubber 8 formed on the outer surface of the fiber reinforced layer 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a rubber hose and a method for manufacturing a rubber hose. More specifically, the present invention relates to a rubber hose used for automobiles and the like, for example, used for transporting a refrigerant, and a method for manufacturing a rubber hose.

[0002]

2. Description of the Related Art Conventionally, in a composite flexible hose used for transporting a refrigerant gas or a carbon dioxide gas refrigerant for a car air conditioner or a refrigerant gas for a contact freezer, the inner tube is generally formed of a resin layer. And a rubber layer composite structure. The thin resin layer provided on the innermost layer ensures gas permeation resistance, and the outer rubber layer ensures flexibility, vibration absorption, and moisture permeation resistance as a hose.

Generally, polyamide (PA) -based resins are often used as the resin forming the innermost layer of a composite rubber hose for a car cooler and other refrigerants. As this polyamide, PA6, PA66, PA6 and PA6
6, PA11, PA12, PA11 and PA1
2, copolymers, modified products, blends, and blends of PA with olefins. The rubber on the outer side of the inner tube includes butyl rubber, chlorinated butyl rubber, brominated butyl rubber, and the like.

However, since these inner tube materials are all polymeric substances, their barrier properties in a high-temperature atmosphere are insufficient. JP-A-2-209224 and JP-A-2-209225 improve the barrier properties.
JP, JP-A-2-138586, JP-A-2-1-1
JP-A-13191, JP-B-63-13812, JP-A-11-264488, and the like have been proposed.

In JP-A-2-209224 and JP-A-2-209225, a thin film of a metal or a metal compound is formed on the outer periphery of an inner tube resin by sputtering or ion plating to improve barrier properties. ing. This method requires a vacuum chamber, and a film can be formed continuously if it is a film. However, it is difficult to form a metal or metal compound thin film uniformly in the case of a cylindrical shape, and it is also difficult to continuously process the thin film. Furthermore, in the case of a dry plating film,
The flexibility of the membrane itself is insufficient, and the hose cannot follow the elongation when the diameter of the inner tube tube is expanded due to vibration or internal pressure of the hose, and there is a possibility that a crack is generated and the barrier property is impaired.

In Japanese Patent Application Laid-Open No. 2-138586, an aluminum laminate layer comprising an aluminum thin layer, a fiber intermediate layer and an adhesive layer is provided on the outer periphery of a hose comprising an inner tube, a reinforcing layer and an outer tube layer. The refrigerant that has permeated the inner tube is the reinforcing layer (between the fibers)
And there is a fear that the effect of the barrier layer provided on the outer periphery of the outermost layer may be reduced.

In Japanese Patent Application Laid-Open No. 2-113191, a laminated sheet composed of a plastic film and a metal thin film is used as a first barrier layer, and a second laminated layer is formed to prevent the aluminum laminated layer from leaking from a wrapped portion. A barrier layer is provided. However, since the inner tube and the aluminum laminate layer are not bonded, the refrigerant that has permeated from the inside may stay between the inner tube and the aluminum laminate layer, causing swelling.

In Japanese Patent Publication No. Sho 63-13812, an aluminum laminate tape coated with low molecular weight polyethylene on both sides is wound vertically on a 1.5 mm thick nylon tube, and the outer layer is extruded. At the extrusion temperature, bonding of the overlap portion, partial bonding of the nylon tube and polyethylene and bonding of the linear polymer of the outer layer are performed simultaneously. However, the thickness of the nylon tube is large and the flexibility is extremely poor. Therefore, if the thickness of the nylon tube is reduced to ensure flexibility, the overlapping portion can be formed at one place on the tube circumference, and the flexibility when the hose is bent may differ depending on the bending direction. . Also, since the aluminum laminate tape is formed by simply painting polyethylene, that is, by extrusion lamination, the adhesion between the aluminum film and the nylon and the adhesion between the aluminum film and the polyethylene are not sufficient, and the refrigerant that has permeated from the inside has a polyethylene layer and aluminum. There is a possibility that the swelling will occur between the film and the film.

Japanese Patent Application Laid-Open No. 11-264488 proposes that an aluminum laminated film is spirally wound and the laminated film is melt-bonded between the film and the inner tube rubber at the vulcanization temperature of the rubber. When the hose has low adhesive strength, the gas permeating from the inner surface at the practical use temperature level of the hose may stay between the laminated film and the inner tube rubber, causing swelling.

[0010] Further, from the relation of the thermal decomposition initiation temperature, the vulcanization temperature of a general rubber is 200 ° C or less, and a resin material (heat sealing material) capable of being melt-bonded at the vulcanization temperature.
Of course is 200 ° C. or less. In the description, the fusion bonding by the PET resin is also described, but the melting point of the PET resin is in the range of 250 to 260 ° C., and it is extremely difficult to perform the fusion bonding simultaneously with the vulcanization of the rubber.

In view of the above circumstances, the present invention provides a rubber hose and a method for manufacturing the rubber hose, which can improve the barrier properties of the refrigerant, the flexibility, the vibration absorption and the moisture permeation resistance as a hose, and the heat resistance. The purpose is to provide.

[0012]

The rubber hose of the present invention comprises:
A single-layer rubber tube, a single-layer resin tube, or an inner tube consisting of a resin layer tube with a rubber layer provided on the outside, and a thermoplastic resin layer laminated on both sides of a thin aluminum-based alloy layer on the outside of the inner tube Further, a barrier layer in which an aluminum laminate film coated with a vulcanizing adhesive on both sides thereof is spirally or longitudinally wound, a fiber reinforcing layer provided outside the barrier layer, and provided outside the fiber reinforcing layer. Characterized in that it is made of an outer shell rubber.

Further, the rubber hose of the present invention comprises a single-layer rubber tube, a single-layer resin tube, or an inner tube having a rubber layer provided on the outside of the resin layer tube, and a thin aluminum-based alloy on the outside of the inner tube. A thermoplastic resin layer is laminated on both sides of the layer, and a barrier layer in which an aluminum laminate film coated with a vulcanizing adhesive is spirally or vertically wound on both sides thereof, and a rubber layer provided outside the barrier layer And a fiber reinforced layer provided outside the rubber layer, and a skin rubber provided outside the fiber reinforced layer.

The rubber hose according to the present invention comprises an inner tube comprising a single-layer rubber tube, a single-layer resin tube, or a resin layer tube provided with a rubber layer on the outside thereof, and a thin layer of an aluminum alloy on the outside of the inner tube. Laminate a thermoplastic resin layer, preferably a thermoplastic resin layer having a melting point of 200 ° C. or more on both surfaces of
Further, a barrier layer formed by spirally or longitudinally wrapping an aluminum laminate film coated with a vulcanizing adhesive on both surfaces thereof, a fiber reinforcing layer provided outside the barrier layer, and a skin provided outside the fiber reinforcing layer A rubber hose made of rubber, or a single-layer rubber tube, a single-layer resin tube, or an inner tube consisting of a resin layer tube provided with a rubber layer outside, and a thin layer of an aluminum-based alloy on the outside of the inner tube Thermoplastic resin layers on both sides, preferably with a melting point of 200
Laminating a thermoplastic resin layer of at least ℃, a barrier layer in which an aluminum laminated film coated with a vulcanizing adhesive on both sides thereof is spirally or vertically wound, and a rubber layer provided outside the barrier layer, A rubber hose comprising a fiber reinforcing layer provided outside the rubber layer and a skin rubber provided outside the fiber reinforcing layer, wherein a thin layer of an aluminum-based alloy of an aluminum laminate film and a thermoplastic resin layer are formed of an adhesive. It is characterized by being adhered by.

Further, the method of manufacturing a rubber hose according to the present invention is characterized in that an inner tube comprising a single-layer rubber tube, a single-layer resin tube, or a resin layer tube provided with a rubber layer on the outside thereof, and an aluminum-based alloy outside the inner tube. A barrier layer in which a thermoplastic resin layer is provided on both sides of the thin layer, and an aluminum laminate film coated with a vulcanizing adhesive on both sides is spirally or vertically wound, and a fiber reinforcement provided outside the barrier layer A method for producing a rubber hose comprising a layer and a skin rubber provided outside the fiber reinforcement layer, wherein the inner tube and the barrier layer or the barrier layer and the fiber reinforcement layer are mutually vulcanized by heating. It is characterized by bonding, for example,
The vulcanized adhesive layers applied to both sides of the aluminum laminated film, or the vulcanized adhesive layers applied to each layer and both sides of the aluminum laminated film are vulcanized and bonded at a temperature for vulcanizing the hose. It is characterized by being integrated.

Further, the method for producing a rubber hose according to the present invention is characterized in that an inner tube comprising a single-layer rubber tube, a single-layer resin tube, or a resin layer tube provided with a rubber layer on the outside thereof, and an aluminum-based alloy on the outside of the inner tube. A barrier layer in which an aluminum laminate film provided with a thermoplastic resin layer on both surfaces of a thin layer is spirally or vertically wound, a rubber layer provided outside the barrier layer, and a fiber provided outside the rubber layer A method for producing a rubber hose comprising a reinforcing layer and a skin rubber provided outside the fiber reinforcing layer, wherein an inner tube and a barrier layer are provided.
Alternatively, it is characterized in that the barrier layer and the rubber layer are vulcanized and bonded to each other by heating, for example, a vulcanized adhesive layer applied to both sides of an aluminum laminated film, or each layer of the aluminum laminated film and The vulcanized adhesive layers applied to both surfaces are integrated by vulcanization at a heating temperature for vulcanizing the hose.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rubber hose and a method of manufacturing the rubber hose according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a partially cutaway perspective view showing an embodiment of the rubber hose of the present invention, and FIG. 2 is a sectional view of the film in FIG.

As shown in FIG. 1, a rubber hose 1 according to one embodiment of the present invention comprises an inner tube 4 having a rubber layer 3 provided outside a resin layer tube 2 and an aluminum laminate provided outside the inner tube 4. Film (hereinafter simply referred to as film)
Barrier layer 6 in which 5 is spirally or vertically wound
And a fiber reinforcement layer 7 provided outside the barrier layer 6 and a skin rubber 8 provided outside the fiber reinforcement layer 7. The inner pipe 4 and the barrier layer 6 are By heating the layer 6 and the fiber reinforcing layer 7, they can be vulcanized and bonded to each other.

The inner tube 4 and the barrier layer 6 or the barrier layer 6 and the fiber reinforcing layer 7 can be vulcanized and bonded to each other at a heating temperature for vulcanizing the hose with a vulcanizing adhesive. The heating temperature for vulcanizing the hose is usually from 130 to
The temperature is about 190 ° C, preferably about 150 to 180 ° C. When the heating temperature is low, the adhesive strength tends to be insufficient due to insufficient reaction, and when it is high, the strength tends to be insufficient or the durability is reduced due to thermal decomposition of the adhesive itself.

The resin layer tube 2 is preferably formed of a polyamide resin or a resin composition containing a polyamide resin as a main component. As the resin composition containing a polyamide resin as a main component, for example, a resin composition containing 60% by weight or more of a polyamide resin is preferable.

Examples of the polyamide resin include polyamide-6 (PA6) and polyamide-6,6 (PA6).
6), polyamide-6,12 (PA612), polyamide-6,10 (PA610), polyamide-11 (PA
11), polyamide-12 (PA12), polyamide-
4,6 (PA46), polyamide MDX-6 and the like can be used.

The remaining components of the resin composition containing a polyamide resin as a main component include, for example, ethylene, α-olefin, non-conjugated diene rubber, olefins such as propylene and butadiene, and polyolefins obtained by homopolymerization of diene monomers or maleic anhydride. A modified polyolefin obtained by graft polymerization of an acid anhydride such as an acid can be used.

When the resin layer tube 2 is formed of a resin composition containing a polyamide resin as a main component, for example, the polyamide resin contains 60% by weight or more and the remaining components are
It is preferably formed of a resin composition comprising ethylene / α-olefin / non-conjugated diene rubber.

The thickness of the resin layer tube 2 is usually 50 to 1
It is about 000 μm, preferably about 100-500 μm. When the thickness of the resin layer tube 2 is thin, gas barrier properties tend to be inferior, and when it is thick, flexibility tends to be inferior.

The rubber layer 3 includes at least one selected from the group consisting of butyl rubber (IIR), chlorinated butyl rubber, brominated butyl rubber, nitrile rubber, chlorosulfonated polyethylene rubber and chloroprene rubber.
It is preferably formed from a seed rubber.

The thickness of the rubber layer 3 is usually about 0.3 to 2 mm, preferably about 0.5 to 1.5 mm. If the thickness of the rubber layer 3 is small, the extrusion processability is poor, and the dynamic characteristics (the stress applied to the barrier layer when internal pressure is applied or vibration is applied) are likely to be inferior. There is a tendency such as a decrease in flexibility and a decrease in swaging strength.

In the present embodiment, the inner tube is formed of the resin layer tube 2 and the rubber layer 3, but the present invention is not limited to this, and the inner tube is formed of the resin layer tube 2. Instead of the inner tube provided with the rubber layer 3 on the outside, an inner tube of a single-layer rubber tube or a single-layer resin tube can be used.

The single-layer rubber tube is preferably extruded by an extruder.

The single-layer resin tube is preferably extruded by an extruder.

As the film 5, as shown in FIG. 2, a thin film 5a of an aluminum alloy, a thermoplastic resin layer 5b laminated on both surfaces and a vulcanizing adhesive 5c applied on both surfaces is used. Can be.

The thin layer 5a and the thermoplastic resin layer 5b are
What has been previously bonded by an adhesive, preferably a vulcanized adhesive, can be used. The thin layer 5a
The thermoplastic resin layer 5b and the thermoplastic resin layer 5b can be vulcanized and bonded together in advance by a vulcanizing adhesive or at a heating temperature for vulcanizing a hose. The vulcanization temperature of the hose is
Usually about 130 to 190 ° C, preferably 150 to 180
It is about ° C. If the temperature of the vulcanized bond is low, the bonding strength tends to be insufficient due to insufficient reaction, and if the temperature is high,
Due to the thermal decomposition of the adhesive itself, the strength tends to be insufficient or the durability tends to decrease.

The thickness of the thin layer 5a is 3 to 50 μm, preferably 7 to 30 μm. If the thickness is less than 3 μm, many pinholes are generated in the film, and the barrier effect tends to be reduced.
When the thickness is larger than m, the flexibility of the film decreases, and the flexibility of the hose product tends to decrease.

The aluminum-based alloy for forming the thin layer 5a is, for example, 10 as shown in JIS H4160.
85, 1070, 1050, 1N30, 1100, 30
03, 3004, and 8021 material.

The thermoplastic resin layer 5 used for the film 5
b is formed from a polymer having a melting point of 200 ° C. or higher.

As the polymer forming the thermoplastic resin layer 5b, for example, polyamide, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate and the like can be used.

The thickness of the thermoplastic resin layer 5b is
The thickness is 5 to 100 μm, and preferably 20 to 70 μm, in terms of feasibility and flexibility. Further, the surface of the thermoplastic resin layer may be subjected to a surface treatment for improving adhesiveness, such as a corona discharge treatment or a silane treatment.

A film 5 wound spirally or longitudinally around the inner tube 4 to form a barrier layer 6
Can be vulcanized together with the vulcanizing adhesive at the heating temperature for vulcanizing the hose. When the heating temperature is low, the adhesive strength tends to be insufficient due to insufficient reaction. When the heating temperature is high, the strength tends to be insufficient or the durability tends to decrease due to thermal decomposition of the adhesive itself. Vulcanizing adhesive 5 on both sides of film 5
When c is applied, the overlapping portion of the film 5 can be vulcanized and bonded by the vulcanizing adhesive 5c.

A vulcanizing adhesive for vulcanizing the inner tube 4 and the barrier layer 6, a vulcanizing adhesive for previously bonding the thin layer 5a and the thermoplastic resin layer 5b, a vulcanizing adhesive 5c and a film As the vulcanizing adhesive for vulcanizing and bonding the overlap portion of No. 5, for example, a vulcanizing adhesive obtained by adding a crosslinking agent to a halogenated polymer can be used.

As the halogenated polymer, for example,
Chlorinated polymers, brominated polymers and the like can be used. Halogenated polymers (eg chlorinated polymers)
Examples of the polymer include polyolefin. Polyolefins include, for example, polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-propylene-diene terpolymer, ethylene-propylene-hexadiene terpolymer, ethylene-propylene-dicyclopentadiene terpolymer and ethylene-propylene-ethylidene norbornene It can be selected from the group consisting of polymers.

Examples of the halogenated polymer include chlorosulfonated polyethylene, chlorinated natural rubber, polychloroprene, chlorinated polychloroprene, chlorinated polybutadiene, butadiene / halogenated cyclic conjugated diene adduct, and chlorinated butadiene styrene copolymer. , Brominated poly (2,3-dichloro-1,3-butadiene), copolymer of α-haloacrylonitrile and 2,3-dichloro-1,3-butadiene, halogenated polyvinyl butyral, chlorinated polyvinyl chloride , And mixtures thereof, and chlorine and bromine-containing synthetic rubbers.

As the crosslinking agent, for example, aromatic nitroso compounds, aromatic dioximes and aliphatic bis-nitrosamines can be used.

Usually, the halogenated polymer is 5 to 95% by weight and the crosslinking agent is 10 to 60% by weight, preferably the halogenated polymer is 25 to 70% by weight and the crosslinking agent is 30 to 40% by weight.

The vulcanizing adhesive and the vulcanizing adhesive 5c for previously bonding the thin layer 5a and the thermoplastic resin layer 5b together
For example, a resin mainly composed of a mixture of a resole-type phenol resin and an aldehyde-modified polyvinyl alcohol can also be used. Examples of modified aldehydes of polyvinyl alcohol include polyvinyl formal resin, polyvinyl acetal resin, polyvinyl butyral resin, and the like.

The resol-type phenol resin is defined as A parts by weight, and the aldehyde-modified product of polyvinyl alcohol is defined as B parts by weight, usually B: A = 75: 25 to 99: 1, preferably 85:15 to 97: 3.

As the fiber reinforcing layer 7, a layer reinforced by braiding reinforcing fibers such as polyester (PET) or nylon / aramid of a fiber material into a plate or spiral shape can be used.

The thickness of the fiber reinforcing layer 7 is usually 0.3-1.
It is about 5 mm, preferably about 0.5 to 1 mm. When the driving amount (input amount) of the fiber reinforcing layer 7 is small, the pressure resistance tends to be low, and when too large, the cost increases and waste due to a reduction in the reinforcing efficiency tends to occur.

It is also possible to provide a rubber layer outside the barrier layer 6 and provide the fiber reinforcing layer 7 outside the rubber layer. By providing the rubber layer outside the barrier layer 6, it is possible to prevent the barrier layer 6 from deteriorating due to friction with the reinforcing fiber caused by vibration, bending, and the like.

The thickness of the rubber layer outside the barrier layer 6 is usually about 0.3 to 1.5 mm, preferably about 0.5 to 1 mm. When the thickness of the rubber layer outside the barrier layer 6 is thin, the anti-friction effect tends to be small. When the thickness is thick, the cost increases and the braid diameter on the outside increases, and when the driving amount is the same, the pressure resistance decreases. Tend to.

As the rubber layer outside the barrier layer 6, for example, butyl rubber, halogenated butyl rubber, EPDM,
CR or the like can be used.

As the outer rubber 8, ethylene / propylene / diene copolymer (EPDM), butyl rubber, butyl chloride rubber, brominated butyl rubber, or the like can be used. The thickness of the outer cover rubber 8 is usually about 1 to 2 mm,
It is preferably about 1 to 1.5 mm.

For example, a vulcanizer in which a rubber hose (laminate) before vulcanization bonding is controlled to a heating temperature for vulcanization (generally about 130 to 190 ° C., preferably about 150 to 180 ° C.) (For example, in a steam vulcanizer), it can be vulcanized and bonded by holding it for about 20 to 90 minutes, preferably for about 30 to 50 minutes.
In the vulcanizing can, the vulcanizing adhesive is vulcanized and bonded by the action of heating steam.

Next, the present invention will be described based on examples, but the present invention is not limited to only these examples.

[0054]

EXAMPLES Examples 1-2 As shown in Table 1, an inner tube resin (a modified polyamide obtained by alloying a polyamide and an acid anhydride-modified polyolefin) was extruded with an extruder to a thickness of 0.5 mm. The inner tube rubber layer (butyl rubber: IIB) was extrusion-coated to produce two inner tubes. The rubber material used for the inner tube rubber layer was kneaded with a brominated alkylphenol formaldehyde resin and a phenolic resin / methylolmelamine as an adhesive component, so that no adhesive layer was required between the inner tube resin layer and the inner tube resin layer.

Then, a 25 μm or 2 μm thick aluminum-based alloy (8021 material) having a thickness of 12 μm
0 μm PET (polyethylene terephthalate: melting point 2)
60 ° C.), and an aluminum laminated film coated on both sides with a vulcanizing adhesive of a type obtained by adding a cross-linking agent (dinitrosobenzene) to a halogenated polymer (chlorosulfonated polyethylene) is spirally applied to each inner tube. To form a barrier layer.

Then, the surface was braided with a braiding machine using polyester fibers to prepare a fiber layer (thickness: 1.0 mm). Next, the EPDM rubber was extruded by an extruder to form a skin rubber layer (thickness: 1.45 mm), thereby obtaining a five-layer laminate.

Further, the five-layered laminate was heated in a steam vulcanizer at 160 ° C. for 40 minutes to perform vulcanization, thereby producing two rubber hoses. The following evaluations were performed to examine gas barrier properties, moisture permeability, and flexibility. Table 1 shows the results.

Gas barrier property test: SAE J 51 M
AY85 (AUTOMOTIVEAIR CONDIT
The permeation amount of CO ₂ was measured according to (IONING HOSE).

Flexibility test: One end of the hose is fixed, and a force required to wind the hose in a U-shape on a drum having a diameter of 100 mm in a 180-degree U-shape is used as a push-pull gauge (AE-300 manufactured by Alco Engineering Co., Ltd.). ), And the tensile force (bending force) indicated by the spring plan was measured.

Moisture permeability: Three hose samples in which 80% of the volume of water is sealed in the hose and one hose sample not sealed are left in a thermostat at 100 ° C. for 168 hours, and after 168 hours from the initial weight. The weight loss of the sample was measured and defined as the amount of water permeation. In addition, the weight reduction of the sample which did not seal the water was used as a blank, and was used as the correction value of the data.

[0061]

[Table 1]

Comparative Examples 1 and 2 As shown in Table 1, two rubber hoses without a barrier layer in Examples 1 and 2 were produced. The performance of the obtained rubber hose was examined in the same manner as in Examples 1 and 2. Table 1 shows the results.

[0063]

As described above, according to the present invention,
The barrier properties of the refrigerant and the flexibility, vibration absorption and moisture permeability of the hose can be improved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a rubber hose of the present invention.

FIG. 2 is a cross-sectional view of the film in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rubber hose 2 Resin layer tube 3 Rubber layer 4 Inner tube 5 Film 6 Barrier layer 7 Fiber reinforcement layer 8 Outer rubber

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 3H111 AA02 BA05 BA12 BA15 BA34 CB05 CB29 DA11 DA26 DB09 DB19 EA12 EA14 EA17 4F100 AB10B AB31B AB33B AK01A AK01B AK03B AK08A AK10A AK21B AK27ABA AK29ABB AK29ABB AK29ABB AN00E AN02A BA04 BA05 BA07 BA10A BA10D BA22B CA03B CB00 DA11 DG01C DG13C DH00C EC18 GB32 JA04B JB16B JD01B JD02 JD05 JK13 JK17 YY00B

Claims (16)

[Claims] 1. A single-layer rubber tube, a single-layer resin tube,
Alternatively, a thermoplastic resin layer is laminated on both surfaces of an inner tube having a rubber layer provided on the outer side of a resin layer tube and a thin layer of an aluminum alloy on the outer side of the inner tube, and a vulcanizing adhesive is further laminated on both surfaces thereof. A rubber hose comprising: a barrier layer formed by winding an aluminum laminated film coated with a spiral in a spiral or longitudinal direction; a fiber reinforcing layer provided outside the barrier layer; and a skin rubber provided outside the fiber reinforcing layer. 2. A single-layer rubber tube, a single-layer resin tube,
Alternatively, a thermoplastic resin layer is laminated on both surfaces of an inner tube having a rubber layer provided on the outer side of a resin layer tube and a thin layer of an aluminum alloy on the outer side of the inner tube, and a vulcanizing adhesive is further laminated on both surfaces thereof. A barrier layer formed by winding an aluminum laminate film coated with helically or vertically, a rubber layer provided outside the barrier layer, a fiber reinforcement layer provided outside the rubber layer, and an outside of the fiber reinforcement layer Rubber hose made of outer rubber provided in 3. The aluminum laminate film according to claim 1, wherein the thin layer of the aluminum alloy and the thermoplastic resin layer are bonded by an adhesive.
Rubber hose as described. 4. The rubber hose according to claim 1, wherein the thin layer of the aluminum alloy of the aluminum laminate film and the thermoplastic resin layer are bonded by a vulcanizing adhesive. 5. A thin layer of an aluminum alloy and a thermoplastic resin layer of the aluminum laminated film are preliminarily vulcanized and bonded to each other by a vulcanizing adhesive, or vulcanized at a heating temperature for vulcanizing a hose. Claim 1.
Or the rubber hose according to 2. 6. The rubber hose according to claim 1, wherein the overlapping portions of the aluminum laminate film are vulcanized and bonded to each other by a vulcanizing adhesive at a heating temperature for vulcanizing the hose. 7. A single-layer rubber tube, a single-layer resin tube, or a rubber layer outside the resin layer tube of the inner tube at a heating temperature for vulcanizing a hose of the thermoplastic resin layer of the aluminum laminated film. 3. The rubber hose according to claim 1, wherein the rubber hose is vulcanized and adhered. 8. The hose according to claim 1, wherein the resin layer tube of the inner tube is formed of a polyamide resin or a resin composition containing a polyamide resin as a main component. 9. The rubber layer of the inner tube is made of at least one rubber selected from the group consisting of butyl rubber, chlorinated butyl rubber, brominated butyl rubber, nitrile rubber, chlorosulfonated polyethylene rubber and chloroprene rubber. 3. The rubber hose according to 1 or 2. 10. The hose according to claim 1, wherein the thickness of the thin aluminum layer used for the aluminum laminate film is 3 to 50 μm. 11. The hose according to claim 1, wherein the thermoplastic resin layer used for the aluminum laminated film is a polymer having a melting point of 200 ° C. or higher. 12. The rubber hose according to claim 1, wherein the thickness of the thermoplastic resin layer used for the aluminum laminated film is 5 to 100 μm. 13. The hose according to claim 3, wherein the vulcanizing adhesive used on both sides of the aluminum laminate film is a vulcanizing adhesive obtained by adding a crosslinking agent to a halogenated polymer. 14. An adhesive mainly used for bonding a thin layer of an aluminum alloy of the aluminum laminate film to a thermoplastic resin layer, the adhesive being mainly composed of a mixture of a resole type phenol resin and an aldehyde modified product of polyvinyl alcohol. The hose according to claim 4, which is a vulcanized adhesive obtained by adding a crosslinking agent to a sulfurized adhesive or a halogenated polymer. 15. An inner tube made of a single-layer rubber tube, a single-layer resin tube, or a resin layer tube provided with a rubber layer on the outside thereof, and a thin layer of an aluminum alloy on both sides of the inner tube outside of the inner tube. A barrier layer in which a plastic resin layer is provided, and an aluminum laminate film further coated with a vulcanizing adhesive on both sides is wound spirally or vertically,
A method for producing a rubber hose comprising a fiber reinforcing layer provided outside the barrier layer and a skin rubber provided outside the fiber reinforcing layer, wherein the inner tube and the barrier layer, or the barrier layer and the fiber reinforcing layer A method for producing rubber hoses that are vulcanized and bonded to each other by heating them. 16. An inner tube comprising a single-layer rubber tube, a single-layer resin tube, or a resin layer tube provided with a rubber layer on the outside thereof, and a thin layer of an aluminum alloy on both sides of the inner tube outside of the inner tube. A barrier layer in which a plastic resin layer is provided, and an aluminum laminate film further coated with a vulcanizing adhesive on both sides is wound spirally or vertically,
A method for producing a rubber hose comprising a rubber layer provided outside the barrier layer, a fiber reinforcement layer provided outside the rubber layer, and a skin rubber provided outside the fiber reinforcement layer, comprising: an inner tube and a barrier. A method for producing a rubber hose that vulcanizes and adheres layers by heating the layers or the barrier layer and the rubber layer.