JP2006001105A - Protective cover for work - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To extremely simply and inexpensively manufacture a conventional protective cover for work requiring large labor heretofore because a sheetlike synthetic resin plate is manufactured by molding using a mold. <P>SOLUTION: The protective cover for work has a core material 2 obtained by coating fibers with a synthetic resin or rubber and a non-slip layer 3 comprising foam. The non-slip layer 3 is superposed on the back surface of the core material 2 and a protective layer 4 is superposed on the front surface of the core material 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a protective cover used during work, for example, to a protective cover for work used to prevent damage and contamination of parts and bodies being assembled in an assembly line of a passenger car or the like.

  The product value is lost if the product is damaged at the work site. Also, if dirt such as oil adheres, it must be removed, and extra work must be done. For this reason, a work protective cover is required to prevent scratches and dirt during the work process. For example, in an automobile assembly line, there is a risk that a tool, a part, or the like may come into contact with a part being assembled or a painted surface of the body, or may fall and damage the surface. For this reason, conventionally, a protective work cover made of synthetic resin as disclosed in Japanese Patent Application Laid-Open No. 07-16992 has been used, and the work protective cover applied at the time of assembling work is fitted to the body of an automobile to provide a painted surface. I was protecting it.

The working protective cover as disclosed in Japanese Patent Application Laid-Open No. 7-16992 is made of a thermoplastic resin sheet, and a partial mold is formed in advance according to the shape of the body of the automobile. A plastic resin sheet was molded. A cloth sheet, for example, a non-woven fabric was bonded to the inner surface of the molded cover so as not to damage the painted surface.
JP-A-7-16992

  However, the above-mentioned conventional protective cover for work has a problem in that it has to be made in accordance with the shape of an automobile part or the shape of an automobile body and further molded, which takes time and cost. It was. In addition, there are many surfaces to be protected, and there is a problem that it is necessary to produce a protective cover for work that matches the shape.

  In addition, since the thermoplastic resin sheet is a molded product, the nonwoven fabric is laminated to prevent scratches. However, the nonwoven fabric may be wrinkled or overlapped with the nonwoven fabric. If wrinkles or streaks occur in the non-woven fabric, the part becomes harder than other parts, and there is a risk of scratching the painted surface of the automobile body, so it is necessary to reduce wrinkles and streaks as much as possible. This work is difficult.

  An object of the present invention is to solve such a conventional problem, and to provide a working protective cover that is extremely simple to manufacture and that can effectively protect an object to be protected. .

  The working protective cover of the present invention has a core material made of fiber or a synthetic resin film and a non-slip layer made of a foam, and the non-slip layer is superposed on the back surface of the core material.

  The fiber may be natural fiber or synthetic fiber. There are no particular restrictions on the synthetic resin or synthetic rubber applied to the fiber, but the fiber should be made soft when applied to the fiber, and the fiber must remain flexible after application. I must.

  Further, a composite material in which a synthetic rubber made of nylon is lined with a synthetic rubber may be used as the core material. Nylon is also resistant to friction, less prone to wrinkles, and has a small specific gravity and is an excellent material for protective covers. If a synthetic rubber is lined with a synthetic fiber made of nylon, it will not lose its shape, and the synthetic rubber will improve cushioning and protect the protective surface.

  Further, the core material may be a natural fiber or synthetic fiber coated with any of vinyl resin, nylon resin, and urethane resin, or tarpaulin, synthetic resin leather, or the like. These materials become highly durable core materials and are suitable as protective covers for work.

  As the foam of the non-slip layer, an EPM, EPDM foam or polyethylene foam is used. The foam should not be stiff, it should not be too soft and durable, and it must be a material that fits the protective surface and does not slide down.

The foam has a hardness (C type) of 7 ± 5 or 10 ± 5 or 12 ± 5 in SRIS0101, and an apparent density (g / cm ³ ) of 0.10 ± 0.03 in SRIS0101. Alternatively, it is preferable to use an EPM or EPDM that is either 0.12 ± 0.03. This foam is important for the protective work cover, since it can be prevented from slipping down. When such a foam is used, the coated surface or the like is not damaged, and the protective cover is excellent in friction with the protective surface. Since EPM or EPDM foam does not discolor the painted surface of an automobile, there is no problem even if it is placed on a protective surface for a long time.

  With the configuration as described above, the non-slip layer can prevent the working protective cover from sliding off, and the object to be protected by the core can be prevented from being damaged. Moreover, since the core material and the non-slip layer are easy to cut and easy to process, they can be manufactured easily and at low cost. Moreover, it is not necessary to mold in accordance with the shape of the protective surface of the object to be protected, and even if the protective surface has some irregularities, it can be protected if the work protective cover can be placed.

  Further, a protective layer made of a synthetic resin sheet for preventing contamination may be superimposed on the surface of the core material. This protective layer is used to prevent the work protective cover from being soiled, and a material that can be wiped off even if oil or the like adheres to the surface, for example, a polyolefin film is used.

  The working protective cover according to the present invention can be manufactured at a low cost because it is extremely simple to manufacture. The work protective cover can be stably placed by friction between the non-slip layer and the protective surface.

Hereinafter, embodiments of the present invention will be described.
(Embodiment 1)
FIG. 1 is a partial cross-sectional view of the end portion of the working protective cover, and FIG. 2 is a partially enlarged cross-sectional view of FIG. The protective cover for work 1 includes a core material 2 with a synthetic resin or synthetic rubber 2B lined on the back surface of natural fiber or synthetic fiber 2A, and a non-slip layer 3 made of a foam layered on the back surface side of the core material 2. And a protective layer 4 for preventing dirt superimposed on the surface side of the core material 2.

  As the core material 2, it is preferable to use a composite material in which a synthetic rubber 2B is lined on the back surface of natural fibers and synthetic fibers 2A. In the first embodiment, the core material 2 uses a composite material in which the back surface of a densely woven nylon fiber is lined with a synthetic rubber 2B, and a thin rayon cloth 2C is bonded to the back surface of the synthetic rubber 2B. is doing.

  The type of nylon used as the core material 2 is not limited, but the type of nylon such as 6 nylon or 66 nylon is not particularly limited. However, the material of the fibers used as the core material 2 is not necessarily nylon. Natural fibers such as cotton and hemp, polyester, polyamide, polyacrylonitrile, polypropylene, polyvinyl alcohol, rayon, vinyl, vinylon, acetate, poly Synthetic fibers made of vinyl chloride, acrylic, etc., and blends thereof may be used. If the back surface of these synthetic fibers is lined with a synthetic resin or synthetic rubber and is not deformed in a predetermined shape, there is no problem as a protective cover for work.

The core material 2 may be a fiber in which any one of vinyl resin, nylon resin, and urethane resin is applied. Further, tarpaulin or synthetic resin leather may be used.
The thickness of this core material 2 should just be about 0.8-2.5 mm, and should just be the thickness which can prevent the damage of a coating surface or a member surface from contact of a tool, components, etc. as a work protective cover. .

  The non-slip layer 3 of the foam on the back side uses EPM, EPDM (ethylene-propylene-dienomethylene rubber) -based foam, or polyethylene foam. For example, the following foam is used.

Specific Example 1) Hardness (C type) is 7 ± 5 in SRIS (Japan Rubber Association Standard) 0101, tensile strength (Mpa) is 0.25 or more in JISK6251, elongation (%) is 200 or more in JISK6251, apparent density ( g / cm ³ ) is 0.10 ± 0.03 in SRIS 0101, compression set (%) is 40 or less in ASTM D10 (American Society for Testing and Materials), and thermal shrinkage (%) is 2 at 70 ° C. × 4 h. Hereinafter, a foam having a water absorption rate (%) of 5 or less in ASTM D 1056 was used.

Specific Example 2) Hardness (C type) is 10 ± 5 in SRIS (Japan Rubber Association Standard) 0101, tensile strength (Mpa) is 0.39 or more in JISK6251, elongation (%) is 200 or more in JISK6251, apparent density ( g / cm ³ ) is 0.12 ± 0.03 in SRIS 0101, compression set (%) is 40 or less in ASTM D10 (American Society for Testing and Materials), and thermal shrinkage (%) is 2 at 70 ° C. × 4 h. Hereinafter, a foam having a water absorption rate (%) of 5 or less in ASTM D 1056 was used.

Specific Example 3) Hardness (C type) is 12 ± 5 in SRIS (Japan Rubber Association standard) 0101, tensile strength (Mpa) is 0.39 or more in JISK6251, elongation (%) is 120 or more in JISK6251, apparent density ( g / cm ³ ) is 0.12 ± 0.03 in SRIS 0101, compression set (%) is 40 or less in ASTM D10 (American Society for Testing and Materials), and thermal shrinkage (%) is 3 at 70 ° C. × 4 h. Hereinafter, a foam having a water absorption rate (%) of 5 or less in ASTM D 1056 was used.

  If it is said foam, it will not be damaged to the coating surface, and even if it mounts on the surface of the member which protects greatly with frictional resistance, there is no fear of slipping down. Further, the non-slip layer 3 also serves to prevent the surface of the member to be protected from being damaged together with the core material 2. The material of the foam must be a material that does not cause discoloration on the painted surface even if it is placed on the painted surface for a long time, such as EPM, EPDM, and polyethylene foam.

  The surface protection member 4 uses a sheet of polyolefin film, such as PP (polypropylene), PE (polyethylene), EVA (ethylene vinyl acetate), or uses tarpaulin or vinyl chloride leather. These materials can prevent contamination, and are strong and strong, and are suitable for protecting the surface of the cover.

  Next, a method for manufacturing the working protective cover 1 will be described. The shape of the core material 2 is not limited, such as a rectangle, a square, or a circle, but the shape is determined according to the application. FIG. 4 is a perspective view of the working protective cover in use. In the case of the sheet-like rectangular working protective cover as described above, the core material 2 is cut into a rectangular shape and the core material 2 is cut. The non-slip layer 3 on the back surface and the protective layer 4 on the front surface side, the outer peripheral edge portion is covered with a rim cloth 5 and sewn with a sewing machine to create a border. Since it is not necessary to mold the synthetic resin film in accordance with the shape of the object to be protected, the production is very simple. As described above, it is preferable to trim the outer peripheral edge, but it is not always necessary to trim the outer peripheral edge. Moreover, you may adhere | attach each layer so that it may not slip mutually.

  As shown in FIG. 4, when protecting the instrument 6 in the process of assembling the passenger car, the work protection cover 1 may be put on the part to be protected as it is. The non-slip layer 3 of the foam on the back surface does not easily slide down due to contact with the surface of the instrument 6. Since the core material 2 made of synthetic fiber 2A such as nylon lined with synthetic rubber 2B covers the surface along the instrument 6, it can protect even a portion with some unevenness or a distorted shape. It can correspond to the part of. The protective layer 4 on the surface prevents the surface of the work protective cover from being soiled, and even if soil is attached, the soil may be wiped off.

  Although FIG. 4 illustrates a state in which the instrument 6 is used, the present invention is not limited to the use of such a part of a passenger car. For example, a painted surface such as a bonnet on the outer surface of a passenger car can be protected. In that case, it is necessary to manufacture the working protective cover 1 in a larger size. In that case, it is only necessary to manufacture a work cover having a size corresponding to the shape of the part to be protected, and the manufacture is simple.

  In the above-described embodiment, the planar work protective cover has been described. However, the present invention is not limited to such a planar shape, and may be a three-dimensional shape as shown in FIG. Even in the case of such a three-dimensional shape, it is not necessary to make a shape by molding as in the prior art, and even a bag-like shape as shown in FIG. 5 can be manufactured only by sewing. is there. In the case of the protective cover for work shown in FIG. 5, it is completed by sewing the curved side surface parts 1B on both sides of the rectangular protective cover main body 1A. Therefore, if there is a sewing machine, it can be easily manufactured.

(Embodiment 2)
FIG. 3 is a partial cross-sectional view of the working protective cover of the second embodiment. In the second embodiment, the non-slip layer 3 is overlapped on the back surface of the core material 2 and the outer peripheral edge is trimmed with a rim cloth 5, and the protective layer 4 is not provided on the surface as in the first embodiment. . If the core material 2 is made of a material such as nylon and is made of a composite material with a synthetic rubber lined on the back side, there will be no problem even if dirt adheres to the surface. However, the core material described in the first embodiment may be used. The shape and usage of the work protective cover 1 are the same as those in the first embodiment.

  In the above embodiment, the case where the protective cover for work of the present invention is used for assembly work of a passenger car has been described. However, the protective cover is not limited to such use, and furniture, electrical appliances, etc. Needless to say, it can also be used for assembly work and is not limited to a specific application.

It is a fragmentary sectional view of the protective cover for work of Embodiment 1 of this invention. It is a partial expanded sectional view of the protective cover for work of FIG. It is a fragmentary sectional view of the protective cover for work of Embodiment 2 of the present invention. It is a use condition figure of the protective cover for work of this invention. It is a use condition figure of the other work protective cover of this invention.

Explanation of symbols

1 Protective cover for work 2 Core material 3 Non-slip layer 4 Protective layer 5 Edge cloth

Claims (6)

A protective cover for work having a core material made of a fiber or a synthetic resin film and a non-slip layer made of a foam, and the non-slip layer is superposed on the back surface of the core material. The protective cover for work according to claim 1, wherein the core material is a synthetic fiber made of nylon and lined with synthetic rubber. The work protective cover according to claim 1, wherein the core material is a fiber coated with any one of vinyl resin, nylon resin, and urethane resin. The work protective cover according to claim 1, wherein the core material is tarpaulin or synthetic resin leather. The foam has a hardness (C type) of either 7 ± 5 or 10 ± 5 or 12 ± 5 at SRIS0101, and an apparent density (g / cm ³ ) of 0.10 ± 0.03 or 0 at SRIS0101. 5. The work protective cover according to claim 1, wherein the work protective cover is EPM or EPDM which is any one of 12 ± 0.03. The protective cover for work according to any one of claims 1 to 5, wherein a protective layer made of a synthetic resin sheet for preventing contamination is superposed on the surface of the core material.

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