Patent Application
20100229998
1. Field of Invention
The present invention relates to an abrasion resistant mesh belt in the field of operation and transportation.
2. Related Art
A mesh belt is a fabric of a narrow breadth or tubular fabric made from various kinds of yarns used as raw materials
The mesh belt is used to bind goods in automobiles or used as a safety belt in airplanes. Moreover, the mesh belt further has other uses, for example, is used as a safety belt of a climber.
The mesh belt particularly used to bind the goods in automobiles is generally braided with warps and woofs. The mesh belt is usually wound around the reel of the retractor. The mesh belt should move along the goods to generate relatively great frictions when the goods are to be bound, in which case the mesh belt is quickly abraded down and the use life of the mesh belt is decreased. To address the problems mentioned above, those skilled in the art used a special material to manufacture mesh belts. Though the abrasion resistance is improved in this case, the special material could not be widely used because of a high price and a complicated manufacturing process thereof.
Chinese Patent Publication CN101163826A provides a mesh belt made of warps and woofs. The woofs extend from the one side of the belt to the other side in a transverse direction. The warps extend along the longitudinal direction of the belt. The warps are made from at least one section of single-line yarn which is combined with another section of line. Users have a comfortable feel when they touch edges of the mesh belt which are not rough with such a structure.
However, the mesh belt provided in the described patent still has some problems. For example, the mesh belt is tended to be abraded too early at the edges thereof. In addition, the structure of the warps is so complicated that they are difficult to be processed and have a high cost.
Chinese Patent Publication CN2876127Y further provides a woven belt comprising a belt face made from warps and woofs. Patterns are made on the belt face, in the middle of which a foldable aperture is provided. Tooth-like rims are set on both sides of the belt face. However, such a woven belt is mainly used for household textile parts. In addition, the patterns and the tooth-like rims thereon could merely be used for aesthetic purpose.
The problems existing in the conventional binding belts, such as easy abrasion, could not be radically overcome when said woven belt is used to bind the goods.
To address the aforementioned problems of the current technology, an abrasion resistant mesh belt is provided which has a low price and high abrasion resistant property.
The present invention provides an abrasion resistant mesh belt comprising a belt body braided by warps and woofs. The woofs are arranged along the transverse direction of the belt body, and the warps extend along the longitudinal direction of the belt body. The thickness of side parts extending along the longitudinal direction of the belt body is larger than that of the remaining main part.
The thickness of the side parts of the abrasion resistant mesh belt is larger than that of the main part, so that the side parts are in contact with goods in advance of the central part, thereby efficiently preventing the central part of the mesh belt being directly abraded down. Furthermore, the thickness of the side parts is larger to directly increase the bearable damaged amount arising from frictions, and hence some parts of the mesh belt of the invention have a long use life.
According to the abrasion resistant mesh belt of the invention, the side parts on both faces of the belt body are higher than the main part. Any one face of the mesh belt could be randomly selected to contact the goods to facilitate use of the mesh belt.
According to the abrasion resistant mesh belt of the invention, the side part on one face of the belt body is flush with the main part, and the side part on the other face of the belt body is higher than the main part. When the contact surface of the mesh belt with the goods is determined, the face of the side part of the contact surface is higher than the corresponding face of the main part, and the other face thereof is flush with the main part, thereby efficiently reducing the production cost.
According to the abrasion resistant mesh belt of the invention, the warps of the side parts and main part of the belt body are yarns. The yarns of the side parts are twisted with a diameter larger than that of the warps in the main part. The abrasion resistant nature of the twisted yarns is significantly increased to improve the abrasion resistant degree of the whole mesh belt.
According to the abrasion resistant mesh belt of the invention, a protection membrane is provided on the surface of the mesh belt.
The abrasion resistant nature of the mesh belt is further increased by the protection membrane.
According to the abrasion resistant mesh belt of the invention, the protection membrane is made of polyethylene, the use of which could generate a higher abrasion resistance of the surface of the mesh belt.
Alternatively, the protection membrane is made of polyvinyl chloride in the abrasion resistant mesh belt of the invention. Polyvinyl chloride is one of the plastic products with the largest output in the world, which has a low price and is widely applied. Moreover, polyvinyl chloride has a relatively good tensile resistance, bending resistance, compressive resistance and impact resistance.
Compared with the prior art, the warps at the side parts of the abrasion resistant mesh belt of the invention use twisted yarns, and the thickness of the side parts is larger than that of the main part. Therefore, the mesh belt has advantages such as a high abrasion resistant degree, a long use life and an improved safety.
Furthermore, the abrasion resistant mesh belt of the invention only has a larger thickness at the side parts. Thus, it has a relatively simple structure and a relatively high practical value.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
The present invention will become more fully understood from the detailed description given herein below for illustration only, and thus are not limitative of the present invention, and wherein:
The technical scheme of the invention is further described by the embodiments of the invention not limiting the scope and spirit of the invention in combination with accompanying figures.
A mesh belt is a fabric of a narrow breadth made from various kinds of yarns used as raw materials. The mesh belt is widely used in dresses, shoes, casings and many fields, such as industry, agriculture, military equipage and transportation. The raw materials used for the mesh belt gradually extend to nylon, vinylon, terylen, polypropylene, spandex, viscose and so on to form three craft technologies including weaving, braiding and knitting. The configurations of the fabric comprise plain weave, twill, satin, jacquard weave, double-layer, multiple-layer, tubular and combined organizations.
The mesh belt is manufactured in the following ways.
(1) Weaving (tatting), i.e., latitude and longitude inter-woven. Yarns doubling and twisting are warped into bobbins (barrel heads) and wefts are reeled into pirns, and the belt is woven on the loom. A single strip, double strips and tens of strips are formed in one single layer or double layers because the width of the belt is small and different weaving methods are used.
(2) Braiding (spindle weaving), i.e., yarns are inserted in the fixed teeth seat of the braiding machine after they form a weft tube via bobbin winding and weft winding, and the weft tube revolves a figure-eight shape track to draw the yarns inter-crossed and woven. Generally, the braided belt is configured as a tube if the number of the spindles is an even number, and the braided belt is configured as a flat plate if the number of the spindles is an odd number. The spindle weaving technique was put into practice before 1949, in which the number of the spindles varied depending on the equipment, and in general varied from 9 to 100. The principal processing of braiding includes bleaching and dying, winding weft, weaving, falling off the machine and cutting, and packaging. The braiding means could not only be used to weave belts but also cords.
As shown in
The mesh belt is braided from warps 1 and woofs 2. In particular, the woofs 2 are positioned along a transverse direction of the mesh belt. That is to say, the woofs 2 extend from one side to the other side of the mesh belt in the transverse direction.
The warps 1 extend along a longitudinal direction of the mesh belt. The warps 1 and woofs 2 mentioned above are yarns. The warps 1 arranged on both sides are twisted. The abrasion resistant property of the twisted yearns is higher than that of common yarns. Moreover, the twisted yarns have a larger diameter than common yarns. In this connection, the side parts 3 arranged on both sides of the mesh belt and braided from the twisted warps 1 and woofs 2 have a thickness larger than the main part 4 braided from the remaining warps and woofs 2. That is to say, both faces of the side parts 3 are higher than the face corresponding to the main part 4 of the mesh belt.
Furthermore, a protection membrane 5 is provided on the outer side of the mesh belt to further increase the abrasion resistance of the mesh belt. The protection membrane 5 could be made of polyethylene or polyvinyl chloride.
The friction surface of polyvinyl chloride has an improved lubrication property due to formation of a solid lubrication film which could endure over 106 or 108 frictions. According to the data till now, polyvinyl chloride is a solid material having an extremely friction coefficient. If the lubrication oil is absent, the friction coefficient μ of the metal is 0.5-1, and that of polyvinyl chloride is only 0.04 lower than that of molybdenum disulfide and graphite, which could not be obtained by the metal even under good lubrication conditions.
The long carbon chain of polyvinyl chloride is surrounded by fluorine atoms and does not have any branched chain. The volume of the fluorine atoms is much larger than that of hydrogen atoms of in the polyethylene molecule. Therefore, the positive charges of the carbon atoms are shielded gaplessly. The negative charges of adjacent fluorine atoms bring a low cohesive energy among molecules due to mutual exclusiveness. In this case, glide is tended to be generated and an extremely low sheer strength is shown. The sheer strength of polyvinyl chloride is decreased because the convex peak temperature of the surface thereof increases when it is in contact and abraded with the metal, so that the polyvinyl chloride molecules are attached on the surfaces abrading with each other and translate to the surface of the metal to fill the depressions on the surface of the metal. This way, an extremely low friction coefficient is displayed.
The polyvinyl chloride further has a higher bearing capacity to endure a static load as high as 540 MPa and a dynamic load as high as 240 MPa, a wider adaptable temperature range of 54˜163° C., an improved erosion resistance to resist pollution from several kinds of greases, and an improved adhesion fastness once dipped besides the good lubrication property previously described.
The aforementioned properties of the polyvinyl chloride fiber fabric provided an favorable basis for application of the binding belt.
The polyvinyl chloride has a density of 2.1˜2.3 g/cm3, a strength of 0.10˜0.25 N/tex and a breaking extension rate of 13%. The polyvinyl chloride further has a friction coefficient of 0.01˜0.05, a hygroscopicity of zero, a limit oxygen index as high as 98, and an application temperature of −180° C.˜260° C. The polyvinyl chloride could endure all the chemical reagents other that melting metal sodium and liquid fluorine and would not change when boiled in aqua regia. The thermal stability and abrasion resistance of the polyvinyl chloride are very good and then form a good basis of application in binding.
The binding belt, i.e., the mesh belt of the invention, of the tie down need be used for binding during operation of the tie down. The side parts 3 of the mesh belt have a large amount of frictions with goods under stress. In this situation, the side parts 3 are first to be abraded, which have a high abrasion resistant property and thereby enhance the abrasion resistance of the whole mesh belt.
The abrasion resistant degree of the mesh belt of the invention increases by 1.3˜1.5 times than that of common mesh belts after measurement, thereby efficiently increasing the use life of the mesh belt, reducing the use cost and enhancing the use safety.
What is more, the color of the warps 1 at the side parts 3 of the mesh belt is different from that of the main part 4 to prompt the abrasion condition of the side parts 3. The color of two warps 1 in the middle of the main part 4 is distinct from that of the other warps 1 of the main part 4, so as to prompt the abrasion condition of central part of the mesh belt.
As shown in
The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
Although these terms are used herein, such as warp 1, woof 2, side part 3, main part 4 and protection membrane 5, the other similar terms could also be used. These terms are merely used to describe and explain the essence of the invention more conveniently, and any limitation to said terms is regarded as departing from the spirit of the invention.
1 warp
2 woof
3 side part
4 main part
5 protection membrane
| Number | Date | Country | Kind |
|---|---|---|---|
| 200920115633.1 | Mar 2009 | CN | national |
