KR20150120070A - Method construction of Heat Resistance Flexible Silicone Hoses and Heat Resistance Flexible Silicone Hoses thereby - Google Patents

Abstract

The present invention relates to a heat-resistant flexible silicone hose used in industries associated with flat panel displays (FPD), semiconductors, and films and in a clean room environment where equipment associated with the industries is operated. A method for manufacturing the heat-resistant flexible silicone hose comprises: a first step (S10) of weaving a woven fabric (10) by using meta-aramid threads, and coating a silicone resin on the woven fabric (10); a second step (S20) of covering the outer circumferential surface of a pipe-type mold (M) in the first step (S10), and of forming configuration parts (31, 33, 35) constituting the hose with the woven fabric (10) and a hard steel wire (20); a third step (S30) of maintaining an original shape by winding a tape around the outer circumference of a third hose configuration part (35) in the second step (S20), and of giving a curved surface by arranging wires and bands at equal intervals around the tape; and a fourth step (S40) of cooling the curved hose after heat treatment in the third step, and completing a heat-resistant flexible silicone hose (30) by removing the pipe-type mold. Therefore, the heat-resistant flexible silicone hose: has excellent cleanliness in the clean room environment and a clear external appearance; can be safely used since the hose is harmless to components, equipment, and human body by having excellent mechanical properties; and exhibits excellent heat-resistance, flexibility, and durability.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing a flexible heat-resisting silicone hose,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-resistant flexible silicone hose used in a FPD (Flat Panel Display) related industry, a semiconductor related industry, a film manufacturing related and related equipment, and in a clean room environment. More specifically, The present invention relates to a method for manufacturing a heat-resistant flexible silicone hose excellent in heat resistance, flexibility and durability, which is clean and has a beautiful appearance and is excellent in mechanical properties and can be safely used harmlessly to parts, equipments and human bodies, and its heat resistant flexible silicone hose will be.

The flexible hose used in the display industry, semiconductor industry, and film industry is used in a special clean room environment unlike the general industry. Therefore, the flexible hose can be used in the form of repetitive movement (flexion, contraction, relaxation) And there is a characteristic requirement that there should be no thermal properties for the operating temperature (-40 ° C to + 180 ° C) and particles (dust) due to vibration and friction generated during use.

Such a flexible hose is typically used as a hose made of a polyurethane (PU) material, a glass fiber woven fabric, and a polyester (PET) woven fabric coated with a silicone resin. Although existing PU flexible hose products are excellent in cleanliness and flexibility, they are more resistant to heat than silicone materials (less than 200 ° C) because they have a heat resistance lower than 100 ° C. There is a drawback that it falls.

Therefore, the market trend of flexible hose products is being replaced by silicone hoses in PU hose products, and PET woven silicone hoses are inferior in heat resistance to silicone materials (less than 200 ℃) In terms of heat resistance, fatigue is rapidly increased due to direct and indirect continuous thermal shock, which has a weak point in durability. In fact, these PET woven silicone coated hoses are increasingly disappearing in the relevant markets.

On the other hand, in the glass fiber woven fabric, the fiber yarn itself has high brittleness, and the fiber yarn phenomenon occurs at a region where fatigue is concentrated due to repeated bending, shrinkage, and relaxation. Dust and particles are generated either sequentially or simultaneously due to the air, gas, pressure, etc. moving from the torn portion of the woven fabric to the inside of the hose. Therefore, there are many restrictions in use in the clean room Is becoming a problem.

The above-mentioned industrial field emphasizes productivity and efficiency, and adopts a high-temperature process and a high-speed process for high efficiency of the equipment. Therefore, flexible hose products used in displays, semiconductors, film lines, and equipment are also required to have a product that contributes to improvement in equipment efficiency by further increasing heat resistance and flexibility compared to existing products.

Korean Registered Patent No. 10-1185087 "High-temperature high-pressure silicone hose and manufacturing method" (registered on September 17, 2012)

SUMMARY OF THE INVENTION It is an object of the present invention to fundamentally improve the conventional problems as described above, and it is an object of the present invention to provide a clean room which is clean, has a clean aesthetic appearance, Heat-resistant flexible silicone hose excellent in heat resistance, flexibility and durability, and its heat-resistant flexible silicone hose.

According to one aspect of the present invention, there is provided a method of manufacturing a heat-resistant flexible silicone hose comprising: a first step of weaving a woven fabric using a meta-aramid yarn and coating a woven fabric with a silicone resin; A second step of wrapping the outer circumferential surface of the pipe-shaped mold in the first step and forming the constituent parts constituting the hose from a woven fabric and a hardened wire; A third step of winding the tape around the outer periphery of the hose third component in the second step to maintain a circular shape and disposing wires and bands at equal intervals on the outer periphery of the tape to impart surface curvature; And a fourth step of heat-treating the hose to which the surface curvature is imparted in the third step, and then performing a cooling treatment, thereby completing the heat-resistant flexible silicone hose by demolding the pipe-type mold.

According to the present invention, the meta-aramid yarn in the first step is selected from single yarn and ply yarns in the form of yarn yarns and is selected from yarn counts of 20 s to 60 s and yarn counts of 20 s / 2 to 60 s / 2 do.

According to the present invention, the hose of the second step includes a hose first constituting part formed by wrapping an outer circumferential surface of a pipe mold with a woven fabric, and a second hose constituting part hosing the outer circumferential surface of the hose first constituting part, And a hose third constituent part formed by enveloping the outer peripheral surface of the hose second constituent part with a woven fabric.

According to the present invention, the tape of the third step is selected from a synthetic fiber filament yarn or a polymer film material, and is woven in a plain weave structure.

According to the present invention, the wires and bands of the third step may be selected from the group consisting of polybenzoxazole (PBO), aramid fiber, carbon fiber, glass fiber, basalt fiber, polyester fiber, nylon fiber, polypropylene fiber organic, inorganic filament fiber or silicone, chloroprene rubber (CR), butadiene rubber butadiene rubber (BR), nitrile butadiene rubber (NBR), styrene butadiene rubber (SBR), ethylene propylene terpolymers (EPDM), and polyetheretherketone Based extrudates of polyoxymethylene, polyoxymethylene (POM), polyamide, polyester, and the like.

According to another aspect of the present invention, there is provided a method for fabricating a hose, comprising the steps of: weaving a yarn into a woven fabric, applying a silicone resin, forming a hose component using a woven fabric and a hardened wire, And the hose is inserted into the heat treatment chamber to form a silicone hose through a hardening process.

It should be understood, however, that the terminology or words of the present specification and claims should not be construed in an ordinary sense or in a dictionary, and that the inventors shall not be limited to the concept of a term It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be properly defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

As described above, the manufacturing method of the heat-resistant flexible silicone hose and the heat-resistant flexible silicone hose according to the present invention are excellent in cleanliness in a clean room environment, have clean aesthetic appearance, have excellent mechanical properties, It is harmless to human body and can be safely used, and provides an excellent effect of heat resistance, flexibility and durability.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart briefly showing a method of manufacturing a heat-resistant flexible silicone hose according to the present invention. FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flexible hose,
Fig. 3 is an exemplary view briefly showing the state of each layer of the heat-resistant flexible silicone hose according to the present invention. Fig.
4 is a photograph showing an actual product of a heat-resistant flexible silicone hose according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a heat resistant flexible silicone hose used in a FPD (flat panel display) related industry, a semiconductor related industry, a film manufacturing related and related equipment, and a clean room environment. The cleanliness is excellent in the clean room environment through the first step (S10), the second step (S20), the third step (S30), and the fourth step (S40) Heat resistant flexible silicone hose which is harmless to equipment and human body and which can be safely used and is excellent in heat resistance, flexibility and durability.

In a first step (S10) according to the present invention, a woven fabric 10 is woven using a meta-aramid yarn and a woven fabric 10 is coated with a silicone resin. The first step S10 is a step of weaving and coating the woven fabric 10, and the woven fabric 10 is formed using a meta-aramid yarn having excellent heat resistance and flexibility, and then heat resistance, abrasion resistance, It is coated with excellent silicone resin and applied. Here, the woven fabric 10 made of meta-aramid yarn may be woven using a loom or the like, and may be selected from textile fabrics such as plain weave, twill weave, runner knitting, and light knitting.

At this time, the meta-aramid yarn of the first step (S10) according to the present invention is selected from yarn yarns and yarn yarns in the form of yarn yarns and is selected from yarn counts of 20s to 60s and yarn counts of 20s / 2 to 60s / 2 . The meta-aramid yarn used in the woven fabric 10 in the first step S10 can be freely selected as a yarn yarn and a yarn yarn in the form of yarn yarns, more preferably in a yarn count range of 20 s to 60 s, 60s / 2. Since meta-aramid fiber has heat resistance of 500 ℃ and has excellent heat resistance among organic polymer fibers, it is widely applied to automotive heat hose and industrial high pressure hose core. Therefore, its durability and long-term heat resistance, Its performance has already been verified, so it will be no different as a heat resistant flexible hose fabric for clean room.

Meanwhile, the woven fabric 10 coated with the silicone resin of the first step S10 can be mixed with various additives to improve the heat resistance and abrasion resistance of the silicone resin. It will be adjustable to the product.

In the second step S20 according to the present invention, the outer peripheral surface of the pipe-shaped mold M is enclosed in the first step S10, and the constituent parts 31, 33, and 35 constituting the hose The woven fabric 10 and the hard wire 20 are formed. This second step S20 constitutes the hose, and constitutes the hose by using the pipe-shaped mold M. [ The hose is formed of the hose constituting parts 31, 33 and 35 by using the woven fabric 10 and the hard wire 20. That is, the hose has a structure in which the woven fabric 10 coated with the silicone resin is wrapped around the outer periphery of the pipe-shaped mold M so that the hose first constituting portion 31 is held in contact with the outside of the hose first constituting portion 31, The hose second constituent portion 33 is wrapped around the hose second constituent portion 33 by wrapping the hard wire 20 at regular intervals for reinforcement so that the woven fabric 10 coated with silicone resin is wrapped on the outer side of the hose second constituent portion 33, Thereby forming a hose.

According to the detailed configuration of the present invention, the hose of the second step S20 includes a hose first constituting portion 31 formed by wrapping the outer circumferential surface of a pipe mold with a woven fabric 10, a hose first constituting portion 31 A hose second constituent portion 33 formed by wrapping the outer circumferential surface of the hose second constituent portion 33 with a woven fabric 10 for wrapping the outer circumferential surface of the hose second constituent portion 33 for holding the hose shape and for pressure- And a hose third constituent section 35. The hose of the second step S20 is a woven fabric 10 coated with a silicone resin, that is, a material forming the three layers of the hose first constituent part 33 and the hose third constituent part 35 is meta-aramid woven fabric A hose first constituting part 31 for smoothly forming an inner wall of the heat-resistant flexible silicone hose by coating a silicone resin having excellent heat resistance, abrasion resistance and adhesive strength on woven fabric on the hose 10, The inner diameter (ID) of the hose to be manufactured, and the required hose diameter (ID) of the hose second constituent portion 33, that is, the hardened steel wire 20, Different diameters can be selected depending on the internal pressure. At this time, the diameter of the hard steel wire 20 is selected in the range of 1.0 mm to 5.0 mm.

In the third step S30 according to the present invention, a tape is wound around the outer periphery of the hose third constituting portion 35 in the second step S20 to maintain the circular shape, and the wire and the band are equally spaced Thereby imparting surface curvature. The third step S30 is a step of holding the circular shape of the hose and imparting a pattern thereto. The third step S30 is a step of holding the circular shape of the hose and imparting a pattern to the outer shape of the hose third constituent part 35 formed in the second step S20. A wire and a band are arranged at regular intervals on the outer side of the next tape to give a pattern.

At this time, the tape of the third step (S30) according to the present invention is selected from a synthetic fiber filament yarn or a polymer film material and is woven in a plain weave structure. The tape of the third step S30 is wound around the outside of the hose third constituting part 35 to increase the pressing force between the hose first, second and third constituent parts 31, 33, 35, It is preferable to use an industrial synthetic fiber filament yarn having excellent strength and relatively low elongation for weaving in a plain weave structure having excellent smooth surface and dimensional stability. In addition, it is more preferable to select the tape as a material which does not generate deformation or foreign matter in a heat treatment process using a post-process heat treatment chamber. In some cases, a polymer film material other than a fiber material may be applied to improve the productivity and gloss the surface of the silicone hose.

The wires and bands of the third step S30 according to the present invention may be selected from the group consisting of polybenzoxazole (PBO), aramid fiber, carbon fiber, glass fiber, Inorganic filament fibers or silicone, chloroprene rubber (CR), polypropylene fibers, polyester fibers, nylon fibers, polypropylene fibers, A rubber system of butadiene rubber (BR), nitrile butadiene rubber (NBR), styrene butadiene rubber (SBR), ethylene propylene terpolymers (EPDM), and polyisocyanurate polyetheretherketone (PEEK), polyoxymethylene (POM), polyamide, and polyester. The wires and bands of the third step S30 are wound on the outside of the tape to form polybenzoxazole PBO and aramid fibers aramid fibers, carbon fibers, glass fibers, basalt fibers, polyester fibers, nylon fibers, polypropylene fibers, and the like. Organic and inorganic filament fibers. The organic and inorganic filament fibers may be coated by a yarn coating process.

The wires and bands may be formed of a material selected from the group consisting of silicone, chloroprene rubber (CR), butadiene rubber (BR), nitrile butadiene rubber (NBR), styrene butadiene rubber Based extrudates such as polyetheretherketone (PEEK), polyoxymethylene (POM), polyamide, polyester, and the like, such as ethylene propylene terpolymers (EPDM) And so on.

In the fourth step S40 according to the present invention, the hose to which the surface curvature is imparted in the third step S30 is heat-treated and then subjected to a cooling treatment to remove the pipe-type mold M, ). The fourth step S40 is a step of curing and demolding the hose. In the third step S30, the hose to which the surface curvature is imparted is heat-treated and then cooled. The pipe-shaped mold M is demolded in the hose, The flexible silicone hose 30 is completed. That is, in the fourth step S40, the hose is put into the heat treatment chamber and heated for a predetermined time to undergo a curing process. When the hose is completely heated in the heat treatment chamber, the hose is taken out from the chamber, cooled at room temperature, And the process of manufacturing the heat-resistant flexible silicone hose 30 is completed by separating the pipe-type mold M existing on the innermost side of the hose by using the separator.

According to another aspect of the present invention, there is provided a method for fabricating a hose, comprising the steps of: weaving a yarn into a woven fabric, applying a silicone resin, forming a hose component using a woven fabric and a hardened wire, The hose is inserted into the heat treatment chamber, and the hose is formed through the hardening process. This is done by using the meta-aramid yarn in steps S10 to S40, S10, as shown in Fig. 1, woven into the woven fabric 10, followed by coating and applying silicone resin, The constituent parts 31, 33 and 35 constituting the hose are formed so as to surround the outer circumferential surface of the pipe-shaped mold M with the woven fabric 10 and the steel wire 20 in step S20. Then, in the third step S30, a tape is wound around the outer periphery of the hose third constituting part 35 to maintain the circular shape, and then the wire and the band are arranged at regular intervals to impart surface bending. In the fourth step S40, And then the pipe-type mold M is demolded to complete the heat-resistant flexible silicone hose 30.

As described above, according to the present invention, the heat-resistant flexible silicone hose 30 for a clean room is made of a meta-aramid spun yarn material so as to have excellent heat resistance and flexibility as compared with existing silicone hose products, . This can be applied to high-efficiency equipment installed and operated in FPD, semiconductor, and film lines, which can contribute to productivity improvement

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

10: woven fabric 20: steel wire
30: Heat-resistant flexible silicone hose 31, 33, 35: Hose component
S10: First step S20: Second step
S30: Third step S40: Fourth step
M: Pipe type mold

Claims (6)

A method of manufacturing a heat resistant flexible silicone hose comprising:
A first step (SlO) of weaving a woven fabric (10) using a meta-aramid yarn and coating the woven fabric (10) with a silicone resin;
(31), (33), and (35) constituting the hose are formed in a woven fabric (10) and a hard steel wire (20) so as to surround the outer circumferential surface of the pipe- Step 2 (S20);
A third step (S30) of winding the tape around the outer periphery of the hose third component (35) in the second step (S20) to keep the circular shape and disposing wires and bands at equal intervals on the outer periphery of the tape, ; And
And a fourth step (S40) of heat-treating the hose having the surface curvature in the third step S30 and then performing a cooling process to complete the heat-resistant flexible silicone hose 30 by demolding the pipe-shaped mold M Resistant flexible silicone hose. The method according to claim 1,
Wherein the meta-aramid yarn in the first step (S10) is selected from single yarn and ply yarns in the form of yarn yarns and is selected from yarn counts of 20s to 60s and yarn counts of 20s / 2 to 60s / 2. Method of manufacturing silicone hose. The method according to claim 1,
The hose of the second step S20 includes a hose first constituting part 31 formed by wrapping the outer peripheral surface of a pipe mold with a woven fabric 10 and a hose connecting part 31 having an outer circumferential surface of the hose first constituting part 31 as a hard wire 20 A hose second constitutional part 33 formed for holding and hermetic pressure reinforcement of the hose and a hose third constitutional part 35 formed by wrapping the outer circumferential surface of the hose second constitutional part 33 with a woven fabric 10 Resistant flexible silicone hose. The method according to claim 1,
Wherein the tape in the third step (S30) is selected from a synthetic fiber filament yarn or a polymer film material and is woven in a plain weave structure. The method according to claim 1,
The wires and bands in the third step S30 may be polybenzoxazole (PBO), aramid fiber, carbon fiber, glass fiber, basalt fiber, Inorganic filament fibers or silicone, chloroprene rubber (CR), butadiene rubber (Nylon fiber), polyester fiber, nylon fiber, polypropylene fiber, Rubber, polyetheretherketone (PEEK), poly (ethylene terephthalate), polybutadiene rubber (BR), nitrile butadiene rubber (NBR), styrene butadiene rubber (SBR), and ethylene propylene terpolymers Based extrudates of polyoxymethylene (POM), polyamide, polyester, and the like. The method of manufacturing a heat-resistant flexible silicone hose according to claim 1, The yarn is woven into a woven fabric using the manufacturing method of the first aspect and a silicone resin is applied to the hose and the hose constituting portions 31, 33 and 35 are formed by using the woven fabric 10 and the hard wire 20, A hose comprising a hose constituting part (35), a tape, a wire and a band being wound around the hose part (35) to form a hose to form a hose, and the hose is inserted into a heat treatment chamber to form a silicone hose through a hardening process.

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