WO2007032425A1

WO2007032425A1 - Apparatus for producing resin tube, method for producing resin tube and resin tube

Info

Publication number: WO2007032425A1
Application number: PCT/JP2006/318242
Authority: WO
Inventors: Yutaka Takebuchi; Manabu Terakawa; Tomohiko Fukumitsu
Original assignee: Air Water Mach Inc.; Air Water Inc.
Priority date: 2005-09-16
Filing date: 2006-09-14
Publication date: 2007-03-22
Also published as: CN101267928A; JPWO2007032425A1; JP4825212B2; CN101267928B

Abstract

Disclosed is an apparatus for producing resin tubes, which has a simple structure and enables to efficiently produce a resin tube whose inner surface is subjected to a homogenization treatment. Also disclosed are a method for producing a resin tube, and a method for producing a roller whose roller surface is covered with such a resin tube. Specifically disclosed is an apparatus for producing a resin tube (1) wherein a resin tube (20) is continuously discharged from an extruder (3) into a conductive liquid (76), while introducing a gas into the inside of the resin tube (20) discharged from the extruder (3) and discharging the gas from the inside of the resin tube (20). In addition, the inner surface of the resin tube (20) is subjected to a plasma process in this apparatus by arranging an inner electrode (71) in the resin tube (20) and applying a high-frequency voltage between the liquid (76) and the inner electrode (71) for generating a plasma within the resin tube (20).

Description

Specification

Resin tube manufacturing device, resin tube manufacturing method, and resin tube

[0001] The present invention relates to a resin tube manufacturing apparatus, a resin tube manufacturing method, a resin tube manufactured by this method, and a resin tube manufactured on the outer periphery thereof, for manufacturing a resin tube having an inner surface subjected to plasma treatment. The present invention relates to a roller and a method for manufacturing the roller. Background art

[0002] Rollers used as pressure rollers and fixing rollers in image forming apparatuses such as copying machines and printers are required to be mechanically, thermally, and chemically stable. Depending on the application, it may be required that the components contained in the toner are difficult to adhere. As a roller used for such applications, a roller whose outer peripheral surface is made of rubber and covered with a fluorine resin tube such as a tetrafluoroethylene perfluoroalkyl butyl ether copolymer has been proposed. Yes. Also, when fixing the outer peripheral surface of the roller body and the inner peripheral surface of the resin tube with an adhesive,

Since the adhesion to rubber is extremely poor, it has been proposed to increase the adhesion by applying etching treatment or primer treatment to the inner surface of the fluororesin tube (see Patent Document 1).

[0003] In addition, a technique has been proposed in which an object to be processed is stored in a plastic bag and plasma is generated in the bag to perform plasma processing on the object to be processed (see Patent Document 2).

[0004] However, each of the above processing methods has a problem that the productivity is remarkably low because the objects to be processed such as fluorine resin tubes are processed one by one.

[0005] On the other hand, a gas is introduced into the inside of the resin tube discharged from the extrusion molding apparatus, and a high frequency voltage is applied between the inner electrode and the outer electrode arranged inside and outside the resin tube. Thus, a method of continuously performing plasma treatment on the inner surface of the resin tube has been proposed (Patent Document 3).

Patent Document 1: JP 2005-163837 A

Patent Document 2: JP-A-6-285365 Patent Document 3: Japanese Patent Laid-Open No. 2002-337210

Disclosure of the invention

Problems to be solved by the invention

[0006] However, in the method described in Patent Document 3, it is unavoidable that a gap is generated between the outer surface of the resin tube and the outer electrode. There is a problem that plasma is generated between the electrodes and the outer surface of the resin tube is roughened. Such roughening of the outer surface is not preferable because a roller coated therewith is used as a pressure roller, a fixing roller or the like in an image forming apparatus such as a copying machine or a printer. .

[0007] In view of the above problems, an object of the present invention is to provide a resin tube manufacturing apparatus and a resin tube capable of continuously manufacturing a resin tube having an inner surface subjected to plasma treatment without roughening the outer surface. It is an object of the present invention to provide a method for manufacturing a roller, a resin tube manufactured by this method, a roller whose outer periphery is coated with the resin tube, and a method for manufacturing the roller.

Means for solving the problem

[0008] In order to solve the above-described problem, in the resin tube manufacturing apparatus according to the present invention, a conductive liquid, an extrusion molding apparatus that continuously discharges the molded resin tube into the liquid, and the extrusion A gas introduction path for introducing gas into the inside of the resin tube discharged from the molding apparatus, a gas discharge path for discharging gas from the inside of the resin tube discharged from the extrusion molding apparatus, An inner electrode positioned inside the resin tube discharged from the extrusion molding device, and a high frequency voltage is applied between the liquid and the inner electrode to generate plasma inside the resin tube. And plasma treatment is performed on the inner surface of the resin tube.

[0009] In the method for producing a resin tube according to the present invention, the resin tube is continuously discharged into a conductive liquid, and the resin tube is discharged. Gas is introduced into and discharged from the inside of the resin tube, an inner electrode is positioned in the resin tube, and a high-frequency voltage is applied between the liquid and the inner electrode. Then, plasma is generated inside the resin tube, and plasma treatment is performed on the inner surface of the resin tube. [0010] In the present invention, the resin tube is discharged into the conductive liquid of the extrusion molding apparatus force, and gas is introduced into the inside by the gas introduction path, and between the inner electrode disposed inside the liquid and the liquid A high frequency voltage is applied to. As a result, plasma is generated inside the resin tube, so that plasma treatment can be performed on the inner surface of the resin tube. Therefore, it is possible to continuously manufacture a resin tube whose inner surface is subjected to plasma treatment, and the inner surface of the powerful resin tube is activated by plasma treatment, so it has excellent adhesion. ing. Also, the plasma treatment can be performed uniformly over the entire circumferential direction of the inner surface of the resin tube. In addition, the resin tube is subjected to plasma treatment using a conductive liquid as an outer electrode, and there is no gap between the outer side of the resin tube and the liquid. Accordingly, since no plasma is generated outside the resin tube, the outside of the resin tube is not roughened.

[0011] In the present invention, it is preferable to have a guide member that abuts on the inner peripheral surface of the resin tube discharged by the extrusion molding apparatus and holds the expanded state of the resin tube in the liquid. . When configured in this manner, the diameter of the resin tube can be maintained even in liquid, and a space for generating plasma can be formed between the inner electrode and the resin tube.

[0012] In the present invention, it is preferable that at least one of the gas introduction path and the gas discharge path is configured with a pressure adjusting device that adjusts the pressure in the resin tube.

[0013] In the present invention, the inner electrode may be constituted by a member constituting the gas introduction path or the gas discharge path in the resin tube.

In the present invention, the resin tube is a fluorine resin tube, for example, a tube made of a tetrafluoroethylene / perfluoroalkyl butyl ether copolymer.

[0015] In the present invention, it is preferable to apply a coupling agent to the inner surface of the resin tube continuously discharged from the extrusion molding apparatus following the plasma treatment. In the case of carrying out such a manufacturing method, in the resin tube manufacturing apparatus according to the present invention, the plasma treatment is applied to the inside of the resin tube from which the extrusion molding apparatus power is also discharged. Supplying coupling agent toward the inner surface of the resin tube A coupling agent supply unit is arranged. With this configuration, it is not necessary to apply a coupling agent to the resin tube when manufacturing a roller whose outer periphery is coated with the resin tube.

[0016] In the present invention, the gas preferably contains an organosilane compound. With this configuration, it is not necessary to apply a coupling agent to the resin tube when manufacturing a roller whose outer periphery is coated with the resin tube.

[0017] The resin tube according to the present invention forms a roller by covering the outer periphery of a roller body in which the outer periphery of a core material is covered with a rubber layer having a constant thickness.

Such a roller is used as a pressure roller for pressing members together in a copier, printer or other image forming apparatus, or as a fixing roller for fixing a toner material on a medium such as paper. Suitable for use.

[0019] In manufacturing the roller having such a configuration, after inserting the roller body inside the resin tube, the outer peripheral surface of the roller body and the inner peripheral surface of the resin tube are bonded with an adhesive. Fix it. Moreover, after inserting the said core material inside the said resin tube, while inject | pouring a rubber material between the said core material and the said resin tube, the method of solidifying the said rubber material is also employable.

Brief Description of Drawings

[011] [011] (a), (b) are a perspective view and a cross-sectional view of a roller according to the present invention.

2 is an explanatory view schematically showing a manufacturing method of the roller shown in FIG.

FIG. 3 is an explanatory view schematically showing another method for manufacturing the roller shown in FIG. 1.

FIG. 4 is an explanatory view of a resin tube manufacturing apparatus according to Embodiment 1 of the present invention.

FIG. 5 is an explanatory view of a resin tube manufacturing apparatus according to Embodiment 2 of the present invention.

FIG. 6 is an explanatory view of a resin tube manufacturing apparatus according to Embodiment 3 of the present invention.

[FIG. 7] (a) and (b) are explanatory views of a resin tube manufacturing apparatus according to another embodiment.

[0021] 1 Resin tube manufacturing equipment

3 Extrusion equipment 7 Plasma generator

10 Loaf

11, material

13 Rubber layer

20 Grease tube

35 dice

37 Insert

51 Gas introduction route

52 Gas outlet

71 Inner electrode

76 Conductive liquid

81, 82 Guide member

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments of the present invention will be described with reference to the drawings.

[0023] [Configuration of roller]

FIGS. L (a) and (b) are a perspective view and a cross-sectional view of a roller according to the present invention. FIG. 2 is an explanatory view schematically showing a manufacturing method of the roller shown in FIG. FIG. 3 is an explanatory view schematically showing another method for manufacturing the roller shown in FIG.

[0024] A roller 10 shown in Figs. L (a) and (b) is used as a V, pressure roller, fixing roller, etc. in a copying machine, a printer or other image forming apparatus, and is made of metal. The outer peripheral surface of the core material 11 includes a roller body 15 in which a rubber layer 13 having a force such as silicon rubber is coated with a constant thickness, and a resin tube 20 coated on the outer peripheral surface of the rubber layer 13. .

In order to manufacture such a roller 10, for example, as shown in FIG. 2, after inserting the roller body 15 inside the grease tube 20, the outer peripheral surface of the roller body 15 and the grease tube 20 Adhesive (not shown) is injected between and fixed to the inner peripheral surface.

In another manufacturing method of the roller 10, as shown in FIG. 3, after inserting the resin tube 20 inside the cylindrical mold 18, both ends thereof are side molds that hold the core material 11 ( (Not shown). Next, the rubber material is put into the annular space between the core material 11 and the resin tube 20 at a high pressure. While filling and filling the resin tube 20 with the filling pressure, the resin tube 20 is brought into close contact with the inner peripheral surface of the cylindrical mold 18 and the rubber material, the resin tube 20 and the core material 11 are integrated together. . At that time, depending on the rubber material and the material of the resin tube 20, it is preferable to apply a coupling agent to the inner surface of the resin tube 20.

[0027] In the case of manufacturing by these wrinkling methods, problems such as peeling of the resin tube 20 occur due to low adhesion of the inner surface of the resin tube 20. In particular, the fluororesin-based resin tube 20 such as tetrafluoroethylene 'perfluoroalkyl butyl ether copolymer (hereinafter referred to as PFA !!) has low adhesiveness. As will be described below, the resin tube 20 is continuously formed, and the inner surface of the resin tube 20 is continuously subjected to plasma treatment. In the present invention, when the plasma treatment is performed on the inner surface of the resin tube 20, the outer peripheral surface of the resin tube 20 is not plasma-treated. Therefore, when the resin tube 20 according to the present invention is coated on an image forming apparatus such as a copying machine or a printer on a caloric pressure roller, a fixing roller, or the like, adhesion of toner material does not occur.

[Embodiment 1]

(Configuration of resin tube manufacturing equipment)

FIG. 4 is an explanatory view of the resin tube manufacturing apparatus according to Embodiment 1 of the present invention. In FIG. 4, the resin tube manufacturing apparatus 1 of this embodiment includes an extrusion molding apparatus 3 that molds the resin tube 20 and discharges the expanded diameter of the resin tube 20, and the diameter is expanded from the extrusion molding apparatus 3. The inner electrode 71 of the plasma generator 7 is arranged inside the resin tube 20 discharged in a state. The inner electrode 71 is made of a conductive material such as metal or carbon.

[0029] The plasma generating device 7 includes a treatment tank 77 in which a water-based, organic solvent-based, and molten salt-based conductive liquid 76 is stored, and is discharged from the extrusion molding device 3 in a diameter-enlarged state. The resin tube 20 is configured to pass through the liquid 76. Here, the liquid 76 is blended with an electrolyte, a surfactant or the like as required. In addition, a voltage is applied to the liquid 76 via the treatment tank 77 or an electrode immersed therein.

[0030] The extrusion molding apparatus 3 is an apparatus for continuously molding the resin tube 20 from the resin pellets by a melt extrusion molding method, and has an upper hopper 31 for charging the resin pellets. A resin transport pipe 30, a heater (not shown) that heats and melts the resin pellets fed from the hopper 31, and a screw device 33 that sends out the resin in the resin transport pipe 30 are provided. The resin transport tube 30 is bent downward at an intermediate position, and a ring-shaped die 35 that defines the outer peripheral surface of the resin tube 20 is attached to an end portion thereof. A substantially cylindrical insert 37 that defines the inner peripheral surface of the resin tube 20 is attached.

[0031] A guide member 81 is disposed on the downstream side in the discharge direction of the resin tube 20 with respect to the insert 37. The guide member 81 is substantially equal to the outer diameter of the insert 37 on the bottom surface. Is in contact with the inner peripheral surface of the resin tube 20 discharged from the extrusion molding device 3, and maintains the expanded state of the resin tube 20 in the liquid 76. Here, the guide member 81 has a circular outer peripheral shape, and maintains the state in which the resin tube 20 is expanded in a cylindrical shape in the liquid 76. The die 35 and the insert 37 are each made of aluminum, iron, other highly corrosion-resistant metals, ceramics, glass, etc.

[0032] Between the guide member 81 and the insert 37, a cylindrical inner electrode 71 having an outer diameter smaller than the outer diameter of the guide member 81 and the insert 37 is disposed, and the inner electrode 71 and the grease tube are disposed. An annular space is formed between the two. Insulating materials 731 and 732 are disposed between the inner electrode 71 and the insert 37 and between the inner electrode 71 and the guide member 81. If the insert 37 and the guide member 81 are insulative, the insulating materials 731 and 732 may be omitted.

[0033] For the insert 37, the insulating material 731, the inner electrode 71, the insulating material 732, and the guide member 81, a gas introduction path 51 communicating with the inside of the resin tube 20 is formed. A gas (reactive gas) is supplied to the annular space formed between the inner electrode 71 and the resin tube 20. That is, in the present embodiment, the inner electrode 71 is configured by the members constituting the gas introduction path 51 in the resin tube 20.

[0034] The gas supplied from the gas introduction path 5 is, for example, an inert gas such as He, Ar, Ne, Kr, or Xe, a nitrogen gas, a hydrogen gas, a carbon oxide gas such as CO or CO, Acidic gas such as O, CF

It is a reaction gas obtained by mixing a reactive gas such as 2 2 4, a polymerizable unsaturated compound gas such as ethylene and propylene, a fluorocarbon-based fluorine-containing compound, air and the like. [0035] Further, the insert 37 is also formed with a gas discharge passage 52 communicating with the inside of the resin tube 20 discharged from the extrusion molding device 3 in a diameter-expanded state. In addition, the gas introduction passage 51 and the gas discharge passage 52 are configured with a valve and the like for maintaining the pressure inside the resin tube 20 at a predetermined value and a pressure regulating device 8.

[0036] (Operation)

In the resin tube manufacturing apparatus 1 configured as described above, the resin tube 20 is continuously formed by the extrusion molding apparatus 3, and the resin tube 20 is discharged into the liquid 76 in a state where the diameter of the resin tube 20 is expanded. In addition, reaction gas is introduced into the inside of the resin tube 20 discharged in the expanded state. Further, a high-frequency voltage is applied between the inner electrode 71 and the liquid 76 through which the resin tube 20 passes outside to generate plasma in an annular space formed between the resin tube 20 and the inner electrode 71. The plasma treatment is continuously performed on the inner surface of the resin tube 20. That is, when a high-frequency voltage is applied between the inner electrode 71 and the liquid 76, glow discharge plasma is generated inside the resin tube 20 and a gas containing chemically active excited species generated by the plasma is generated. Since it contacts the inner surface of the resin tube 20, plasma processing (surface modification) such as etching, implantation, radical generation, etc. can be performed on the inner surface of the resin tube 20. Therefore, the resin tube 20 whose inner surface is subjected to plasma treatment can be continuously manufactured. As for the compressive force, the plasma treatment can be performed uniformly over the entire circumferential direction of the inner surface of the resin tube 20. Further, since the resin tube 20 is discharged from the extrusion molding device 3 in the expanded state, the gas is introduced inside the resin tube 20 and the inner electrode 71 is disposed. There is also an advantage that the device configuration is simple.

In this embodiment, the liquid 76 is used as a substantially outer electrode, and there is no gap between the outer peripheral surface of the resin tube 20 and the liquid 76. Therefore, no plasma is generated on the outside of the resin tube 20, so that the outside of the resin tube 20 is not roughened.

[0038] Further, since the resin tube 20 has a guide member 81 that is in contact with the inner peripheral surface of the resin tube 20 discharged from the extrusion molding device 3 and maintains the diameter-expanded state in the liquid 76 of the resin tube 20, An annular space can be reliably formed between the resin tube 20 and the inner electrode 71 where the inner peripheral surface of the tube 20 and the inner electrode 71 do not come into contact with each other. The guide member 81 Since the internal force of the resin tube 20 prevents unnecessary gas leakage, the amount of reaction gas used can be reduced.

[0039] It should be noted that the manufactured resin tube 20 is transported by -roll rollers 41, 42, guide rollers 431, 432, 44, etc., and wound in a roll shape by a hoisting device (not shown). . Further, the manufactured resin tube 20 may be cut into a predetermined dimension by a laser or the like without being wound into a roll. Further, a liquid draining device using a squeegee, an air injection nozzle or the like may be disposed above the liquid 76. Furthermore, depending on the type of the liquid 76, the resin tube 20 produced from the liquid 76 may be washed.

[0040] In order to manufacture the roller 10 shown in Fig. 1 using the thus manufactured resin tube 20, as described with reference to Fig. 2, the resin tube 20 is cut into a predetermined dimension. Then, the roller body 15 is inserted inside the resin tube 20. Next, the outer peripheral surface of the roller body 15 and the inner peripheral surface of the resin tube 20 are fixed with an adhesive. In the roller 10 manufactured as described above, various functions can be given to the surface of the roller 10 by the resin tube 20.

[0041] Also, as described with reference to FIG. 3, after inserting the core material 11 into the inner side of the resin tube 20, a rubber material is injected between the core material 11 and the resin tube 20, The rubber material may be solidified. At that time, it is preferable to vulcanize the rubber.

[0042] In any of these rollers 10, since the adhesive strength between the roller body 15 and the resin tube 20 is high, the life of the roller 10 having the roller 10 surface constituted by the resin tube 20 can be extended.

[0043] In this embodiment, the force described with reference to the PFA resin tube 20 as an example. As the fluorine resin resin tube 20, other than PFA, polytetrafluoroethylene (PTFE), tetrafluoroethylene may be used. Monohexafluoropropylene copolymer (FEP), tetrafluoroethylene ethylene copolymer (ETFE), polychlorotrifluoroethylene (PCTFE), chlorotrifluoroethylene ethylene copolymer (ECTFE), polyvinyl fluoride This embodiment can also be applied to the production of a resin tube 20 such as -redene (PVDF), polyvinyl fluoride (PVF), or tetrafluoroethylene-vinylidene fluoride copolymer. Further, as the resin tube 20, the present invention is applied to the manufacture of a resin tube 20 other than the fluorine resin-based resin tube 20. A little.

In addition, an insulating material may be disposed between the inner electrode 71 and the resin tube 20. In addition, a cooling device for cooling the resin tube 20 before the resin tube 20 is immersed in the liquid 76 may be provided for the resin tube 20 discharged from the extrusion molding device 3.

[0045] [Embodiment 2]

FIG. 5 is an explanatory view of a resin tube manufacturing apparatus according to Embodiment 2 of the present invention. The basic configuration of the resin tube manufacturing apparatus of the present embodiment is the same as that of the first embodiment, and therefore, common portions are denoted by the same reference numerals and illustrated. Is omitted.

In the first embodiment, the force in which the gas introduction path 51 is formed in the cylindrical inner electrode 71 In this embodiment, as shown in FIG. 5, the coil shape that forms the gas introduction path 51 in the resin tube 20 This member 511 is used as the inner electrode 71. Also in this case, a guide member 81 is supported below the inner electrode 71. In the case where the insert 37b or the like has a conductive force, an insulating material 731 is disposed between the insert 37 and the inner electrode 71 as in the first embodiment. When the guide member 81 is made of a conductor, an insulating material 732 (not shown) may be disposed between the inner electrode 71 and the guide member 81 as in the first embodiment.

[0047] [Embodiment 3]

FIG. 6 is an explanatory view of a resin tube manufacturing apparatus according to Embodiment 3 of the present invention. The basic configuration of the resin tube manufacturing apparatus of the present embodiment is the same as that of the first embodiment, and therefore, common portions are denoted by the same reference numerals and illustrated. Is omitted.

In Embodiment 1, the guide member 81 is disposed at a position below the inner electrode 71. However, as shown in FIG. 6, the support member 734 is disposed below the insert 37 at a position above the inner electrode 71. A disc-shaped guide member 82 supported at the position may be arranged. In this case, a space in which plasma is generated is secured around the inner electrode 71 by the guide member 82 and the negative rollers 41 and 42. However, since the resin tube 20 is crushed by the push rollers 41 and 42, the inner electrode 71 and the guide member 82 have shapes corresponding thereto. is doing. Further, a gas supply path is formed in the support member 734, the guide member 82, and the inner electrode 71 so as to communicate with the gas supply path 51 of the insert 37. In the insert 37, a pipe 521 constituting the gas discharge path 52 passes through the guide member 82 and opens in a space where the inner electrode 71 is disposed. Here, it is preferable that a shielding plate 79 is disposed on the lower surface of the inner electrode 71 where the gas supply path 51 is opened, so that the reaction gas is efficiently guided around the inner electrode 71.

[0049] [Other Embodiments]

FIGS. 7 (a) and 7 (b) are explanatory views of a resin tube manufacturing apparatus according to another embodiment. The basic configuration of the resin tube manufacturing apparatus shown in FIGS. 7 (a) and 7 (b) is the same as that in Embodiments 1 to 3, and the same reference numerals are given to the common parts. Therefore, the description thereof is omitted.

In the resin tube manufacturing apparatus 1 shown in FIG. 7 (a), in the resin tube apparatus according to Embodiment 1, the insert 37, the insulating material 731, the inner electrode 71, the insulating material 732, and the guide member 81 On the other hand, a coupling agent introduction path 90 is formed to spray and drop a silane coupling agent such as acrylic silane or aminosilane on the inner surface of the resin tube 20, and the coupling agent introduction path 90 is The coupling agent supply unit 91 is opened at a position below the guide member 81. For this reason, after the plasma treatment is performed on the inner surface of the resin tube 20 continuously discharged from the extrusion molding device 3, the coupling agent can be applied subsequently. Therefore, when manufacturing the roller 10 by the method described with reference to FIGS. 1 to 3, there is an advantage that it is not necessary to apply a silane coupling agent to the inner surface of the resin tube 20 in a separate process.

[0051] Also, in the resin tube manufacturing apparatus 1 shown in FIG. 7 (b), in the resin tube apparatus according to Embodiment 2, after passing through the insert 37 and the insulating material 731, the coiled inner electrode A coupling agent introduction path 90 is formed through the inner side of 71 toward the guide member 81, and this coupling agent introduction path 90 opens as a coupling agent supply portion 91 on the side of the guide member 81. ing. For this reason, after the plasma treatment is performed on the inner surface of the resin tube 20 continuously discharged from the extrusion molding apparatus 3, a coupling agent such as acrylsilane or aminosilane can be subsequently applied. it can. Therefore, please refer to Fig. 2 and Fig. 3. When the roller 10 is manufactured by this method, there is an advantage that it is not necessary to apply a silane coupling agent to the inner surface of the resin tube 20 in a separate process.

[0052] When the configuration shown in FIGS. 7 (a) and (b) is adopted, the silane coupling agent is applied to the inner side of the resin tube 20, and is not wound into a roll. The inner side of the resin tube 20 may be dried after cutting and cutting. Also, the configuration shown in FIGS. 7 (a) and (b) may be applied to the third embodiment.

[0053] Further, instead of the configuration shown in FIGS. 7 (a) and 7 (b), in the resin tube manufacturing apparatus 1 according to Embodiments 1 to 3, the gas supplied from the gas introduction path 51 is supplied with chlorosilane or alkoxy. If an organic silane compound such as silane is included, the inner surface of the resin tube 20 can be coupled, so when the roller 10 is manufactured by the method described with reference to FIG. In the process, the step of applying the coupling agent to the inner surface of the resin tube 20 can be omitted.

Industrial applicability

[0054] In the present invention, the resin molding tube is continuously discharged, and the inner surface of the resin tube is continuously plasma-treated. Therefore, a resin tube whose inner surface is activated by plasma treatment and has improved adhesiveness can be continuously produced. In addition, the resin tube is plasma-treated using a conductive liquid as an outer electrode, and there is no gap between the outer side of the resin tube and the liquid. Accordingly, no plasma is generated on the outside of the resin tube, so that the outside of the resin tube is not roughened. After the roller body is inserted into the inside of the resin tube configured as described above, if the outer peripheral surface of the roller main body and the inner peripheral surface of the resin tube are fixed with an adhesive, the resin chain is fixed to the roller surface of the roller. Various functions can be given by UB. In addition, after inserting the metal core inside the resin tube and injecting a rubber material between the metal core and the resin tube and solidifying the rubber material, the roller surface of the roller Various functions can be provided by the grease tube. In any of these rollers, the adhesive strength between the roller body and the resin tube is high, so that the life of the roller whose roller surface is made of the resin tube can be extended.

Claims

The scope of the claims

[1] a conductive liquid;

An extrusion molding device that continuously discharges the molded resin tube into the liquid; a gas introduction path for introducing gas into the inside of the resin tube discharged from the extrusion device;

A gas outlet for discharging gas from the inside of the resin tube discharged from the extrusion molding device;

An inner electrode located inside the resin tube discharged from the extrusion molding device;

Have

A resin tube manufacturing apparatus, wherein a high frequency voltage is applied between the liquid and the inner electrode to generate plasma on the inner side of the resin tube, and plasma treatment is performed on the inner surface of the resin tube.

[2] The guide device according to claim 1, further comprising a guide member that abuts against an inner peripheral surface of the resin tube discharged by the extrusion molding apparatus and maintains the diameter-expanded state of the resin tube in the liquid. A special feature of a resin tube manufacturing apparatus.

[3] The pressure regulator according to claim 1, wherein at least one of the gas introduction path and the gas discharge path is configured to adjust a pressure in the resin tube. Resin tube manufacturing equipment.

[4] The resin tube manufacturing method according to claim 1, wherein the inner electrode is constituted by a member constituting the gas introduction path or the gas discharge path in the resin tube. apparatus.

[5] The coupling agent supply according to claim 1, wherein a coupling agent is supplied to an inner surface of the resin tube that has been subjected to the plasma treatment on the inside of the resin tube that has been discharged from the extrusion molding apparatus. The resin tube manufacturing apparatus characterized by the above-mentioned.

[6] Extruder force in the conductive liquid The resin tube is continuously discharged, and gas is introduced into the inside of the resin tube discharged from the extruder, and While discharging the gas inside the resin tube, the inner electrode is positioned in the resin tube,

A high-frequency voltage is applied between the liquid and the inner electrode to generate plasma on the inner side of the resin tube, and plasma treatment is performed on the inner surface of the resin tube. Method.

[7] The resin tube manufacturing method according to claim 6, wherein the resin tube is a fluorine resin tube.

[8] The method for producing a resin tube according to claim 7, wherein the resin tube is a tube made of a tetrafluoroethylene perfluoroalkyl butyl ether copolymer.

[9] The method according to claim 6, wherein the coating agent is applied to the inner surface of the resin tube continuously discharged from the extrusion molding device following the plasma treatment. The manufacturing method of the rosin tube which carries out.

[10] The method of producing a resin tube according to claim 6, wherein the gas contains an organosilane compound.

[11] A resin tube produced by the method according to any one of claims 6 to 10.

[12] A roller, characterized in that the resin tube according to claim 11 is covered with the outer periphery of the main body of the core, in which the outer periphery of the core is covered with a rubber layer having a constant thickness.

13. The roller according to claim 12, wherein the roller is used as a pressure roller or a fixing roller in a copying machine, a printer, or another image forming apparatus.

[14] In manufacturing the roller according to claim 12,

After inserting the said roller main body inside the said resin tube, the outer peripheral surface of the said roller main body and the inner peripheral surface of the said resin tube are fixed with an adhesive agent, The manufacturing method of the roller characterized by the above-mentioned.

[15] In manufacturing the roller according to claim 12,

After the core material is inserted into the inside of the resin tube, a rubber material is injected between the core material and the resin tube, and the rubber material is solidified. The manufacturing method of