JP3057952U - Dustproof mat - Google Patents

Abstract

(57) [Problem] To provide a dustproof mat which is easy to dispose after use and has no adverse effect on the natural environment. A dust-proof mat is provided by providing a sheet substrate made of at least one selected from paper, a biodegradable film or a biodegradable cloth, an adhesive layer on one side and a release layer as needed on the other side. Let it. After using this dustproof sheet,
Decomposition treatment is possible even under natural environment without incineration treatment.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a dust-proof mat comprising a sheet made of at least one of paper, biodegradable film and biodegradable cloth, and an adhesive layer applied to one side of the sheet.

[0002]

[Prior art]

 In hospitals, pharmaceutical factories, precision equipment factories, nuclear power plants, IC factories, food factories, printing factories, computer rooms, etc., a highly dust-free environment is desirable for hygiene management and production control. In order to prevent dust in a room where people and objects come in and go out, it is necessary to control the air conditioning and remove dust that is attached to the backs of shoes or wheels of trucks.

[0003] In order to prevent the intrusion of dust, a dust-proof mat in which an adhesive layer is applied to the surface of a sheet base material has been developed, and the dust is removed by laying it in a passage or an entrance. Have been. Conventionally, as this sheet base material, a chemically synthesized film having no biodegradability, for example, an olefin base material such as a polyethylene film is easily available and is often used. This disposal is done by incineration.

[0004]

[Problems to be solved by the invention]

 In recent years, there has been a growing demand for the development and use of various types of industrial products that can be easily disposed of after use without adversely affecting the natural environment, and that can be regenerated as much as possible, so-called natural environmentally friendly products. I have. In the field of dust-proof mats, the practical application of products that can easily and safely dispose of while maintaining the conventional quality is expected.

[0005]

[Means for Solving the Problems]

 The present inventors have studied the sheet base material used for the dustproof mat in view of the above situation, and as a result, completed the present invention. That is, the present invention includes the following new dustproof mat. 1) A dustproof mat comprising a sheet having at least one selected from the group consisting of paper, biodegradable film and biodegradable cloth and having an adhesive layer adhered to one surface of a sheet.

[0006] 2) The dustproof mat as described in 1) above, wherein a release layer is applied to the other surface of the base sheet. 3) The dustproof mat according to the above 1) or 2), wherein a plurality of the sheets each having the adhesive layer adhered thereto are releasably laminated. 4) The dustproof mat as described in 3) above, wherein a sheet provided with a corner emblem or a dry edge on a part of the sheet surface on which the adhesive layer is adhered is laminated.

[0007]

[Embodiment of the invention]

 The dustproof mat of the present invention is characterized by using paper, biodegradable film or biodegradable cloth as a sheet substrate. As used herein, the term “biodegradable substrate” refers to a substrate that can be degraded by the action of a biochemically active substance such as a microorganism (for example, bacteria or mold) or an enzyme. The biodegradable base material can be degraded when a biochemically active substance is artificially acted on, as well as in the presence of degrading microorganisms and enzymes in the natural environment, for example, in soil, in compost, Alternatively, a material that can be decomposed even in freshwater or seawater is preferably used.

[0008] Paper, which is one of the substrates in the present invention, is manufactured using wood pulp as a raw material and belongs to a biodegradable substrate. The paper used for the sheet substrate of the present invention is preferably a strong paper, and is characterized by a strength of about 2 to 10 kg / 15 mm, a unit weight of about 30 to 60 g / m ² and a thickness of about 30 to 60 g / m ^2. Those having a thickness of about 80 to 100 μm are suitable. Preferred specific examples thereof include single gloss kraft paper, Ryoso kraft paper and Japanese paper.

[0009] The biodegradable film that can be used as the base material of the present invention is a biodegradable polymer as long as it is manufactured from any of chemically synthesized products, biosynthetic products, and natural polymers. Is also good. As the characteristics, it is preferable that the strength is about 0.5 to 10 kg / 20 mm and the thickness is about 10 to 70 μm. Specific examples thereof include a film made of biodegradable aliphatic polyester, polyvinyl alcohol (PVA), or starch.

The biodegradable cloth that can be used as the base material of the present invention is a sheet made of biodegradable fibers or yarns by a loom, a knitting machine, a felt manufacturing method, or another conventional method. It is preferable that the strength is about 2 to 10 kg / 15 mm and the unit weight is about 30 to 60 g / m ² . The paper, the biodegradable film or the biodegradable cloth described above may be used alone, or two or three kinds may be used in a laminated manner. Dustproof mats using these base sheets can be discarded after use without polluting the natural environment due to biodegradation. Even when incinerated, they burn only about half the calories of polyethylene and burn Has the advantage that it is not easily damaged.

Next, a method for producing the present dustproof sheet will be described with reference to examples. An adhesive layer is applied on one side of the base sheet, and a release layer is applied on the other side if necessary. The pressure-sensitive adhesive layer can be applied by uniformly applying a pressure-sensitive adhesive having a strong cohesive force and suitable for dust removal on the surface of the base sheet. The thickness of the pressure-sensitive adhesive layer varies depending on the type of the pressure-sensitive adhesive, the intended use, and the like, but the pressure-sensitive adhesive is generally applied uniformly so as to have a thickness of 5 to 50 μm, preferably about 5 to 15 μm. As the pressure-sensitive adhesive here, a pressure-sensitive adhesive which adheres under pressure and hardly hardens is preferably used. For example, an adhesive material prepared by dissolving an acrylic, rubber, urethane, natural resin or the like with an organic solvent or water may be used. The application method may be a conventional method such as reverse coating, gravure coat or kiss coat.

Additives can be added to the pressure-sensitive adhesive for various purposes as long as the function is not impaired. For example, by adding an antibacterial agent, it is convenient because it can suppress the growth of bacteria as well as the dustproof effect. As described above, generally, 10 or more sheets of the base sheet having the adhesive layer adhered thereon are laminated so as to be peelable to produce a product, and after being subjected to dust removal from the sheet on the upper surface, the sheet is sequentially peeled. . In order to facilitate this release, a release layer is usually applied to the other side of the substrate sheet to which the adhesive layer has been applied. As the release agent, one that can easily peel the sheet and that does not adversely affect the dustproof effect of the adhesive may be selected. To meet this purpose, a release agent selected from a silicone-based, non-silicon-based or natural resin-based release agent, or a release layer made of polyethylene laminate may be applied. In particular, non-silicone release agents that do not require high temperature curing are preferred. The release layer is applied by uniformly applying a release agent to the sheet surface so that the thickness is about 0.1 to 1.0 g / m ² . The coating method may be a conventional method such as gravure coating, kiss coating or reverse coating.

Further, depending on the types of the base sheet and the adhesive, the laminated processed sheets may be easily peeled off one by one, and in that case, it is not always necessary to apply a release layer. Examples of such a case include a case where a polyethylene laminate is used as a base material, and a case where an adhesive layer is composed of an adhesive and bead-shaped particles. Next, an example of the structure of the dustproof sheet is shown in FIG. The first layer is a processed sheet in which an adhesive layer 1 and a release layer 3 are applied to paper, a biodegradable film or a biodegradable base sheet 2, and the unit layer is laminated according to the intended use. However, the number is generally about 10 to 60. This laminated product is placed in a place where dust removal is required, and is sequentially subjected to dust removal while peeling one by one. FIGS. 2 and 3 show examples of dustproof mats designed so that the laminated sheets can be more easily separated one by one in the present invention. FIG. 2 shows a dust-proof mat 6 in which a corner emblem (glue killer) 4 is provided on a part of the processed sheet, and FIG. In this way, the upper and lower sheets are provided with a portion where they do not adhere to each other, and are finished so that they can be easily peeled off one by one from this end portion. In this case, besides inserting a corner patch, a paste-killing portion may be provided by printing or paint. If a protective film that can be peeled off is attached to the upper surface of the first layer and the lower surface of the final layer of the laminated product during use, it will be easier to handle the product during distribution and storage. By attaching a double-sided tape to the lower surface of the final unit layer of the processed sheet, it can be stably adhered to the floor or the undermat.

[0014]

【Example】

In the dustproof mat of the present invention, examples of combinations of the base sheet and the adhesive peeling and releasing agent are described below. 1) Paper (50 g / m ² Katatsuya kraft paper) / shellac varnish release agent / natural rubber based pressure-sensitive Chakuzai 2) paper (50 g / m ² Katatsuya kraft paper) / polyethylene laminated / acrylic tacky Chakuzai 3) nonwoven (natural) / non-silicone-based release agent / acrylic pressure-sensitive adhesive 4) paper (40 g / m ² Katatsuya kraft paper) / PVA-based primer / non-silicone-based release agent / acrylic pressure-sensitive adhesive

[0015]

[Effect of the invention]

 The dustproof mat of the present invention has a sheet base material made of at least one of paper, biodegradable film and biodegradable cloth, and is safe after use by biochemically active substances such as microorganisms and enzymes. It can be disposed of without worrying about pollution to the natural environment. In addition, even in the case of incineration, there is little damage to the incineration equipment due to low calorie burn and no harmful combustion products are generated, which is also advantageous in this respect.

[Brief description of the drawings]

FIG. 1 shows a configuration example of a dust-proof mat when a base sheet that has been subjected to adhesive processing and release processing is laminated in the present invention.

FIG. 2 shows an example in which, in the present invention, a corner emblem (glue killer) is provided on a part of an adhesively processed base sheet.

FIG. 3 shows an example in which a dry edge (a part without glue) is provided on a part of a substrate sheet which has been subjected to an adhesive processing in the present invention.

[Explanation of symbols]

 1 Adhesive layer 2 Base sheet 3 Release layer 4 Corner patch 5 Dry edge 6 Laminated dustproof mat (sheet)

Claims (4)

[Utility model registration claims] 1. A dustproof mat comprising a sheet having at least one selected from the group consisting of paper, biodegradable film and biodegradable cloth and having an adhesive layer adhered to one surface of a sheet. 2. The dustproof mat according to claim 1, wherein a release layer is applied to the other surface of the sheet. 3. The dustproof mat according to claim 1, wherein a plurality of said sheets each having an adhesive layer adhered thereto are releasably laminated. 4. The dustproof mat according to claim 3, wherein a sheet provided with a corner emblem or a dry edge is partially laminated on a part of the sheet surface on which the adhesive layer is adhered.