阅读说明：本技术 一种应用于温差大地区的高耐性沥青卷材 (High-resistance asphalt coiled material applied to regions with large temperature difference ) 是由 郑永胜 于 2021-05-26 设计创作，主要内容包括：本发明公开了一种应用于温差大地区的高耐性沥青卷材,属于沥青卷材领域,一种应用于温差大地区的高耐性沥青卷材,当本方案的沥青卷材的使用环境处于低温状态时,沥青料处于固化状态,此时强化管整体为直杆状,而两个强化球之间的强化管相互交错形成网状结构,增加沥青料的强度,在本方案的沥青卷材的使用环境处于高温状态时,弯管部会回复成三维螺旋状,形成三维空间立体结构,降低熔融状态下的沥青料的流动性,不易造成沥青料大量损失,不易形成环境污染,可以实现增加沥青卷材对温度变化的耐下,在低温环境中,增加沥青卷材的结构强度,不易形成过量的沥青碎屑,而在高温状态下,降低融化的沥青料的流动性。(The invention discloses a high-resistance asphalt coiled material applied to a region with large temperature difference, belonging to the field of asphalt coiled materials, and the high-resistance asphalt coiled material applied to the region with large temperature difference is characterized in that when the use environment of the asphalt coiled material is in a low-temperature state, an asphalt material is in a solidified state, the whole reinforced pipe is in a straight rod shape, the reinforced pipes between two reinforced balls are mutually staggered to form a net-shaped structure, the strength of the asphalt material is increased, when the use environment of the asphalt coiled material is in a high-temperature state, a bent pipe part can return to a three-dimensional spiral shape to form a three-dimensional space three-dimensional structure, the fluidity of the asphalt material in a molten state is reduced, a large amount of loss of the asphalt material is not easily caused, environmental pollution is not easily caused, the resistance of the asphalt coiled material to temperature change can be increased, the structural strength of the asphalt coiled material is increased in a low-temperature environment, and excessive asphalt fragments are not easily formed, and at high temperature, the fluidity of the melted asphalt material is reduced.)

1. The utility model provides a be applied to high resistant pitch coiled material in big area of difference in temperature, includes adhesion portion (1) and pitch material (2) that match each other, adhesion portion (1) and pitch material (2) fixed connection, its characterized in that: the asphalt material (2) is internally doped with a reinforcing ball (3), the reinforcing ball (3) is uniformly distributed on the asphalt material (2), the reinforcing ball (3) comprises an outer ball shell (301), a power ball shell (302) is arranged in the outer ball shell (301), a strain ball (304) is arranged in the power ball shell (302), a gap between the outer ball shell (301) and the power ball shell (302) is a movable cavity (305), a gap between the power ball shell (302) and the strain ball (304) is a power cavity (306), the movable cavity (305) and the power cavity (306) are both filled with nitrogen under standard atmospheric pressure, one end of the power ball shell (302) close to the strain ball (304) is fixedly connected with an elastic spherical net (303), the elastic spherical net (303) is formed by weaving a plurality of elastic rubber tubes, the plurality of elastic rubber tubes are communicated with each other, and the elastic rubber tubes are filled with air under 1.2 standard atmospheric pressure, fixedly connected with reinforced pipe (4) on outer spherical shell (301), the one end that reinforced pipe (4) are close to outer spherical shell (301) runs through outer spherical shell (301), power spherical shell (302) and strain ball (304) in proper order to be linked together with strain ball (304), reinforced pipe (4) are including straight tube portion (401) and bent pipe portion (402) two, straight tube portion (401) are located the one end that reinforced pipe (4) are close to outer spherical shell (301), it has filling chamber (5) to open the chisel in reinforced pipe (4), filling chamber (5) are linked together with strain ball (304), filling chamber (5) and strain ball (304) intussuseption are filled with hydraulic oil.

2. The high-resistance asphalt coiled material applied to the areas with large temperature difference according to claim 1, wherein: the wall thickness of the elastic rubber tube is larger than one half of the diameter of the elastic rubber tube, and the elastic rubber tube is made of high-elasticity rubber.

3. The high-resistance asphalt coiled material applied to the areas with large temperature difference according to claim 1, wherein: the reinforcing balls (3) are arranged in a single layer in the asphalt material (2), and the linear distance between the reinforcing balls and the attachment part (1) is approximately equal.

4. The high-resistance asphalt coiled material applied to the areas with large temperature difference according to claim 1, wherein: one end of the reinforced pipe (4) close to the attachment part (1) penetrates into the attachment part (1) and is fixedly connected with the attachment part (1).

5. The high-resistance asphalt coiled material applied to the areas with large temperature difference according to claim 1, wherein: the reinforcing tube (4) is far away from one end of the reinforcing ball (3) and is provided with a feeding hole (6), the feeding hole (6) is communicated with the filling cavity (5) and the outside, and the feeding hole (6) is filled with a hot-melt material block (7).

6. The high-resistance asphalt coiled material applied to the areas with large temperature difference according to claim 5, wherein: the hot-melt material block (7) is made of non-crystalline materials, and the hot-melt material block (7) is made of compact materials, so that the melting point of the hot-melt material block (7) is not fixed.

7. The high-resistance asphalt coiled material applied to the areas with large temperature difference according to claim 1, wherein: and an oleophobic coating (8) matched with the inner wall of the reinforced pipe (4) is coated on the inner wall of the reinforced pipe.

8. The high-resistance asphalt coiled material applied to the areas with large temperature difference according to claim 7, wherein: the one end of packing chamber (5) inner wall is kept away from in oleophobic coating (8) is through the coarsening, and the one end that packing chamber (5) inner wall was kept away from in oleophobic coating (8) promptly is unevenness form.

9. The high-resistance asphalt coiled material applied to the areas with large temperature difference according to claim 1, wherein: fluorescent pigment is filled in the hydraulic oil, and the fluorescent pigment is selected from a green bright color system.

10. The high-resistance asphalt coiled material applied to the areas with large temperature difference according to claim 1, wherein: the sealing performance between the outer spherical shell (301) and the reinforced pipe (4) is poor, and the sealing performance between the power spherical shell (302) and the reinforced pipe (4) is good.

Technical Field

The invention relates to the field of asphalt coiled materials, in particular to a high-resistance asphalt coiled material applied to a region with large temperature difference.

Background

The asphalt waterproof coiled material is a coiled material made of asphalt material, base material and surface spreading anti-sticking material, and is also called asphalt felt. Are commonly used for a plaster type waterproof layer. The asphalt waterproof roll refers to a roll with a tire and a roll without a tire. The roll-shaped material is made by impregnating base materials such as thick paper or glass fiber cloth, asbestos cloth, cotton and linen fabrics and the like with petroleum asphalt and is called as a base coiled material; asbestos, rubber powder, etc. are mixed into asphalt material, and the rolled material is called rolled coiled material, i.e. tubeless coiled material, and is commonly used for water-proofing repair of building.

The asphalt waterproof coiled material has low cost, low tensile strength and elongation, and poor temperature stability, and referring to fig. 9, the asphalt coiled material melts and flows when being subjected to high temperature, and is easy to crack when being subjected to low temperature; the anti-aging property is poor, the service life is short, the waterproof coiled material belongs to a low-grade waterproof coiled material, and regular maintenance and replacement are needed, so that the normal use is influenced.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a high-resistance asphalt coiled material applied to a region with large temperature difference, which can realize the purpose of increasing the resistance of the asphalt coiled material to temperature change, increasing the structural strength of the asphalt coiled material in a low-temperature environment, preventing excessive asphalt fragments from being easily formed, and reducing the fluidity of a melted asphalt material in a high-temperature state, so that the loss of the asphalt coiled material is prevented.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides a be applied to high tolerance pitch coiled material in big area of difference in temperature, includes adhesion portion and the pitch material that matches each other, adhesion portion and pitch material fixed connection, mix in the pitch material and reinforce the ball, reinforce ball evenly distributed is at the pitch material, reinforce the ball and include outer spherical shell, be equipped with the power spherical shell in the outer spherical shell, be equipped with the ball that meets an emergency in the power spherical shell, the space between outer spherical shell and the power spherical shell is the activity chamber, space between power spherical shell and the ball that meets an emergency is the power chamber, activity chamber and power intracavity all fill have standard atmospheric pressure nitrogen gas, the one end fixedly connected with elasticity spherical screen that the power spherical shell is close to the ball that meets an emergency, elasticity spherical screen has a plurality of elasticity rubber tubes to weave and forms, and a plurality of elasticity rubber communicate each other, elasticity rubber tube intussuseption is filled with 1.2 standard atmospheric pressure, fixedly connected with strengthens the pipe on the outer spherical shell, the utility model discloses a pitch material, including outer spherical shell, power spherical shell, reinforcing pipe, elbow, filling cavity and strain ball, the reinforcing pipe is close to the one end of outer spherical shell and runs through outer spherical shell, power spherical shell and strain ball in proper order to with strain ball intercommunication, the reinforcing pipe includes straight tube portion and elbow portion two, straight tube portion is located the reinforcing pipe and is close to the one end of outer spherical shell, it has the filling cavity to open in the reinforcing pipe, filling cavity and strain ball intercommunication, it has hydraulic oil to fill the cavity and strain ball intussuseption, can realize increasing pitch coiled material and to temperature variation's resistant down, in low temperature environment, increases pitch coiled material's structural strength, is difficult for forming excessive pitch piece, and under high temperature state, reduces the mobility of the pitch material that melts, is difficult for causing pitch coiled material's loss.

Furthermore, the wall thickness of the elastic rubber tube is larger than one half of the diameter of the elastic rubber tube, and the elastic rubber tube is made of high-elasticity rubber, so that the whole elastic spherical net is not easy to tear in the outward expansion and inward contraction processes, air filled in the elastic spherical net is not easy to leak, and the elastic spherical net is not easy to lose efficacy.

Furthermore, the reinforcing balls are arranged in a single layer in the asphalt material, and the linear distance between the reinforcing balls and the attachment part is approximately equal, so that the reinforcing effect of the reinforcing balls and the reinforcing pipe is improved.

Furthermore, the one end that the reinforced pipe is close to the adhesion part runs through the inside of adhesion part and with adhesion part fixed connection, increases the joint strength between adhesion part and the reinforcing ball for the reinforcing ball is difficult for breaking away from with the adhesion part, conveniently processes the pitch coiled material.

Furthermore, a feed inlet is formed in one end, far away from the reinforcing ball, of the reinforcing pipe, the feed inlet is communicated with the filling cavity and the outside, hot-melt material blocks are filled in the feed inlet, in the process of manufacturing the asphalt coiled material, the asphalt material in a molten state can melt the hot-melt material blocks and flows into the filling cavity, and then the asphalt material is cooled and solidified, so that the connection strength between the asphalt material and the reinforcing pipe is increased.

Furthermore, the hot-melt material block is made of an amorphous material and is a compact material, so that the melting point of the hot-melt material block is not fixed, the part, close to the melting state, of the hot-melt material block can be melted at high temperature, the melted asphalt material can be rapidly filled into a melting gap to play a sealing role, and hydraulic oil filled in the reinforced pipe is prevented from leaking easily.

Furthermore, the inner wall of the reinforced pipe is coated with an oleophobic coating matched with the reinforced pipe, so that the affinity between the hydraulic oil and the oleophobic coating is reduced, the hydraulic oil is not easy to form an oil film on the inner wall of the filling cavity, a gap is not easy to form between the solidified asphalt material and the reinforced pipe, and the hydraulic oil is not easy to escape.

Furthermore, the one end that the packing intracavity wall was kept away from to the oleophobic coating is through the coarsening, and the one end that the packing intracavity wall was kept away from to the oleophobic coating promptly is unevenness form, increases the joint strength between the pitch material solidification back of molten state and the reinforcement pipe, is difficult for forming the clearance between reinforcement pipe and the pitch material of solidification.

Furthermore, fluorescent pigment is filled in the hydraulic oil, a green bright color system is selected for the fluorescent pigment, the fluorescent pigment can be observed in time after the reinforcing pipe is damaged or even broken and the hydraulic oil seeps out, and the fluorescent pigment with the bright color system can be distinguished from a black asphalt material, so that maintenance personnel can find the fluorescent pigment in time.

Furthermore, the sealing performance between the outer spherical shell and the reinforced pipe is poor, and only molten asphalt materials need to be placed and cannot easily penetrate through the gap between the outer spherical shell and the reinforced pipe to enter the movable cavity, and the sealing performance between the power spherical shell and the reinforced pipe is good, so that the air filled in the power cavity is prevented from escaping.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

when the use environment of the asphalt coiled material is in a low-temperature state, the asphalt material is in a curing state, the reinforcing pipe is integrally straight-rod-shaped, the reinforcing pipes between the two reinforcing balls are mutually staggered to form a net-shaped structure, the net-shaped structure formed by the reinforcing pipes can increase the strength of the asphalt material, and even if the asphalt material becomes brittle and cracks at the low-temperature state, the cracks are not easy to continue to grow due to the existence of the reinforcing pipes, and the asphalt material is not easy to break on a large scale.

When the service environment of the pitch coiled material of this scheme is in high temperature state, the pitch material becomes molten state, elasticity spherical network is under the inside air action of self this moment, outside inflation, make power spherical shell and the clearance between the ball that meets an emergency become the grow, form the low-pressure area in the power intracavity, make the ball that meets an emergency outside inflation, and the hydraulic oil that will fill the intracavity packing is inhaled back, the bent pipe portion that loses the hydraulic oil effect can revert into three-dimensional heliciform, and the reinforcement pipe between the adjacent reinforcement ball can crisscross each other entangle, form three-dimensional space spatial structure, reduce the mobility of the pitch material under the molten state, be difficult for causing pitch material mass loss, be difficult for forming environmental pollution.

When the ambient temperature descends, the elastic spherical net contracts under the action of the air in the elastic spherical net, and the elastic spherical net compresses the strain ball to contract, so that the hydraulic pressure returns to the filling cavity, the reinforcing pipe returns to a straight rod shape again, the radiation range of the reinforcing pipe is increased, and the reinforcing effect of the reinforcing pipe is increased.

Can realize increasing the resistant down of pitch coiled material to temperature variation, in low temperature environment, increase pitch coiled material's structural strength, be difficult for forming excessive pitch piece, and under high temperature state, reduce the mobility of the pitch material that melts, be difficult for causing pitch coiled material's loss.

Drawings

FIG. 1 is a schematic view of the structure of the asphalt coil of the present invention as it is unrolled;

FIG. 2 is a front cross-sectional structural view of an asphalt roll of the present invention as it is unrolled;

FIG. 3 is a front cross-sectional view of the structure of the reinforcing ball of the present invention in a low temperature environment;

FIG. 4 is a front cross-sectional view of a structure in which the reinforcing ball of the present invention is in a high temperature environment;

FIG. 5 is a schematic view of a partial cross-sectional structure of a reinforcing ball of the asphalt roll of the present invention in a low temperature state;

FIG. 6 is a schematic view of a partial cross-sectional structure of a reinforcing ball of the asphalt roll of the present invention at a high temperature;

FIG. 7 is a schematic structural view of a bent pipe portion of the present invention;

FIG. 8 is a schematic view of the reinforcement tube of the present invention shown in a configuration distal to the end of the reinforcement ball;

FIG. 9 is a schematic diagram of the change of a conventional asphalt coiled material when the coiled material is subjected to environmental temperature change;

FIG. 10 is a schematic view of the change of the asphalt roll of the present invention when subjected to a change in ambient temperature.

The reference numbers in the figures illustrate:

the device comprises an attachment part 1, an asphalt material 2, a reinforcing ball 3, an outer ball shell 301, a power ball shell 302, an elastic ball net 303, a strain ball 304, a movable cavity 305, a power cavity 306, a reinforcing pipe 4, a straight pipe 401, a bent pipe 402, a filling cavity 5, a feeding hole 6, a hot melt material block 7 and an oleophobic coating 8.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection can be direct connection or indirect connection through an intermediate medium, and can be communication inside the model adapting element. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-4, a high-resistance asphalt coiled material applied to a large temperature difference area includes an attachment portion 1 and an asphalt material 2 which are matched with each other, the attachment portion 1 is fixedly connected with the asphalt material 2, reinforcing balls 3 are doped in the asphalt material 2, the reinforcing balls 3 are uniformly distributed in the asphalt material 2, each reinforcing ball 3 includes an outer ball shell 301, a power ball shell 302 is arranged in the outer ball shell 301, a strain ball 304 is arranged in the power ball shell 302, a gap between the outer ball shell 301 and the power ball shell 302 is a movable cavity 305, a gap between the power ball shell 302 and the strain ball 304 is a power cavity 306, the movable cavity 305 and the power cavity 306 are both filled with nitrogen gas at standard atmospheric pressure, one end of the power ball shell 302 close to the strain ball 304 is fixedly connected with an elastic spherical net 303, the elastic spherical net 303 is woven by a plurality of elastic rubber tubes, the elastic rubber tubes are communicated with each other, and the elastic rubber tubes are filled with 1.2 standard atmospheric pressure, fixedly connected with reinforced pipe 4 on the outer spherical shell 301, reinforced pipe 4 runs through outer spherical shell 301, power spherical shell 302 and strain ball 304 in proper order near the one end of outer spherical shell 301 to be linked together with strain ball 304, reinforced pipe 4 includes straight tube portion 401 and bent pipe portion 402 two, straight tube portion 401 is located reinforced pipe 4 and is close to the one end of outer spherical shell 301, it has filling chamber 5 to open the chisel in reinforced pipe 4, filling chamber 5 is linked together with strain ball 304, filling chamber 5 and strain ball 304 intussuseption are filled with hydraulic oil.

Can realize increasing the resistant down of pitch coiled material to temperature variation, in low temperature environment, increase pitch coiled material's structural strength, be difficult for forming excessive pitch piece, and under high temperature state, reduce the mobility of the pitch material that melts, be difficult for causing pitch coiled material's loss.

The wall thickness of the elastic rubber tube is larger than one half of the diameter of the elastic rubber tube, and the elastic rubber tube is made of high-elasticity rubber, so that the elastic spherical net 303 is not easy to tear in the outward expansion and inward contraction process, air filled in the elastic spherical net 303 is not easy to leak, and the elastic spherical net 303 is not easy to lose efficacy.

Referring to fig. 2, the reinforcing balls 3 are arranged in a single layer in the asphalt material 2, and the linear distance between the reinforcing balls and the attachment portion 1 is substantially equal, so that the reinforcing effect of the reinforcing balls 3 and the reinforcing pipe 4 is increased, one end of the reinforcing pipe 4 close to the attachment portion 1 penetrates through the interior of the attachment portion 1 and is fixedly connected with the attachment portion 1, the connection strength between the attachment portion 1 and the reinforcing balls 3 is increased, the reinforcing balls 3 are not easily separated from the attachment portion 1, and the asphalt coiled material is conveniently processed.

Referring to fig. 8, a feed inlet 6 is drilled at one end of the reinforced pipe 4 away from the reinforced ball 3, the feed inlet 6 communicates the filling cavity 5 with the outside, a hot-melt material block 7 is filled in the feed inlet 6, in the process of manufacturing the asphalt coiled material, the asphalt material 2 in the molten state melts the hot-melt material block 7 and flows into the filling cavity 5, and then the hot-melt material block 7 is cooled and solidified to increase the connection strength between the asphalt material 2 and the reinforced pipe 4, the hot-melt material block 7 is made of an amorphous material, and the hot-melt material block 7 is a dense material, so that the melting point of the hot-melt material block 7 is not fixed, the part of the hot-melt material block 7 close to the molten state melts at first under the action of high temperature, and the molten asphalt material 2 is quickly filled in the melting gap to play a role in sealing, so that the hydraulic oil filled in the reinforced pipe 4 is not prone to leak out, and the inner wall of the reinforced pipe 4 is coated with an oleophobic coating 8 matched with the hot-melt material block, the affinity between the hydraulic oil and the oleophobic coating 8 is reduced, so that the hydraulic oil is not easy to form an oil film on the inner wall of the filling cavity 5, so that a gap is not easily formed between the solidified asphalt material 2 and the reinforced pipe 4, hydraulic oil is not easily escaped, one end of the oleophobic coating 8 far away from the inner wall of the filling cavity 5 is subjected to roughening treatment, namely, one end of the oleophobic coating 8, which is far away from the inner wall of the filling cavity 5, is uneven, the connection strength between the solidified asphalt material 2 in a molten state and the reinforced pipe 4 is increased, a gap is not easy to form between the reinforced pipe 4 and the solidified asphalt material 2, the hydraulic oil is filled with fluorescent pigment which is selected from a green bright color system, after the reinforcing pipe 4 is damaged or even broken, hydraulic oil can be observed in time after seeping out, and fluorescent pigment with bright color system can be distinguished from black asphalt material, so that maintenance personnel can find the fluorescent pigment in time.

The sealing performance between the outer spherical shell 301 and the reinforced pipe 4 is poor, only molten asphalt material 2 needs to be placed and cannot easily penetrate through the gap between the outer spherical shell 301 and the reinforced pipe 4 to enter the movable cavity 305, the sealing performance between the power spherical shell 302 and the reinforced pipe 4 is good, and air filled in the power cavity 306 needs to be prevented from escaping outwards.

Referring to fig. 5-7 and fig. 10, when the environment of use of the asphalt coiled material of the present embodiment is in a low temperature state, the asphalt material 2 is in a solidified state, and at this time, the reinforcing balls 3 and the reinforcing pipes 4 are as shown in fig. 3, the reinforcing pipe 4 is a straight rod shape as a whole, and the reinforcing pipes 4 between two reinforcing balls 3 are staggered to form a mesh structure, at this time, the mesh structure formed by the reinforcing pipes 4 can increase the strength of the asphalt material 2, even if the asphalt material 2 becomes brittle at a low temperature and cracks occur, due to the existence of the reinforcing pipes 4, the cracks are not easy to continue to grow, and the asphalt material 2 is not easy to break in a large range, and when the environment of use of the asphalt coiled material of the present embodiment is in a high temperature state, the asphalt material 2 becomes a molten state, at this time, the elastic spherical mesh 303 expands outward under the action of air inside itself, so that the gap between the power ball shell 302 and the strain ball 304 becomes larger, a low pressure area is formed in the power cavity 306, so that the strain balls 304 expand outwards, and the hydraulic oil filled in the filling cavity 5 is sucked back, the elbow part 402 without the hydraulic oil function returns to a three-dimensional spiral shape, and the reinforcing pipes 4 between the adjacent reinforcing balls 3 are interlaced and entangled with each other to form a three-dimensional space structure, so that the fluidity of the asphalt material 2 in a molten state is reduced, a large amount of loss of the asphalt material 2 is not easily caused, and environmental pollution is not easily caused, when the environmental temperature is reduced, the elastic spherical net 303 is contracted under the action of the air inside the elastic spherical net 303 and compresses the strain balls 304 to contract, so that the hydraulic pressure returns into the filling cavity 5, the reinforcing pipes 4 are changed into a straight rod shape again, the radiation range of the reinforcing pipes 4 is increased, the reinforcing effect of the reinforcing pipes 4 is increased, particularly, the changing process of the reinforcing pipes 4 is performed when the asphalt material 2 is in a molten state, once the asphalt 2 is cured, the morphology of the reinforcement pipe 4 cannot change any more.

Can realize increasing the resistant down of pitch coiled material to temperature variation, in low temperature environment, increase pitch coiled material's structural strength, be difficult for forming excessive pitch piece, and under high temperature state, reduce the mobility of the pitch material that melts, be difficult for causing pitch coiled material's loss.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.