JP3021848U - Welding spark extinguishing mat - Google Patents

Abstract

(57) Abstract: A fire extinguishing mat for welding sparks capable of extinguishing welding sparks instantly and surely by water impregnated in a water absorbing polymer layer. SOLUTION: A corner member 3 having an L-shaped cross section is fixed to both end edges in the longitudinal direction of a flame-retardant sheet member 2, and an upper surface of the flame-retardant sheet member 2 is provided between two nonwoven fabrics 6 and 7. A fire extinguishing mat body having a structure in which at least two layers of a mat-based sheet member 5 having a polymer layer 8 having a water absorbency of about 700 times its own weight and also having a water retention property are laminated and polymerized and fixed. A pair of L-shaped corner members having a cross-section are fixed to both end edges in the lateral direction of 1 in use, and a large amount of water is sufficiently impregnated on the entire surface of the mat main sheet member 5 to be absorbed by the polymer layer 8. Welding sparks scattered and dropped are extinguished instantly by the water.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a placing mat for extinguishing welding sparks scattered during welding such as arc welding and gas welding.

[0002]

[Prior art]

 Conventionally, in welding work such as arc welding and gas welding, a vinyl chloride sheet or a glass fiber sheet has been generally used as a placing mat for receiving the scattered welding sparks.

[0003]

[Problems to be solved by the device]

 By the way, although the conventional mat uses a non-combustible sheet member, the welding sparks scattered and dropped on the mat do not extinguish instantaneously but spontaneously extinguish over time, so it is possible to repeat this. Depending on the use, the mats would have burnt holes, and this had to be discarded and a new mat used, which was uneconomical.

The present invention has been made in view of such problems, and an object of the present invention is to extinguish a welding spark with impregnated water instantly and surely, which is excellent in safety. At the same time, it is to provide a fire extinguishing mat for welding sparks that can be used any number of times and is highly economical.

[0005]

[Means for Solving the Problems]

 To this end, the present invention provides a fire-extinguishing mat placed at a site where welding sparks fall, including a fire-extinguishing mat body and a pair of corner members, wherein the fire-extinguishing mat body is a longitudinal direction of a flame-retardant sheet member. A mat-based sheet in which corner members are fixed to opposite edges of the mat, and a polymer agent layer having water absorption and water retention is provided between two non-woven fabrics on the flame-retardant sheet member. The pair of corner members are the same as the corner members of the fire-extinguishing mat body, and the pair of corner members has a short length of the flame-retardant sheet member in the pair of corner members. An adhesive layer is provided on the surface facing the opposite edges in the hand direction, and a release paper is provided on the adhesive layer. A large amount of water is sufficiently absorbed and impregnated in the mat-based sheet member surrounded by the pair of corner members, and the welding spark is extinguished in a moment by the absorbed water. .

[0006]

[Embodiment of device]

 Embodiments will be described with reference to the drawings. 1 is a perspective view of an example of a fire-extinguishing mat according to the present invention, FIG. 2 is an enlarged sectional view taken along the line AA of FIG. 1, and FIG. 3 is a partially enlarged view of FIG. The mat includes a fire extinguishing mat body and a pair of corner members. The fire-extinguishing mat main body 1 has a pair of hard resin cross-section L-shaped corner members 3 along the entire length of opposite longitudinal ends of a flame-retardant sheet member 2 made of vinyl chloride or the like formed in a rectangular shape with a predetermined size. Is adhered through the adhesive layer 4 and the like, and at the same time, the upper surface of the flame-retardant sheet member 2 has a water absorbency of about 700 times its own weight between the two nonwoven fabrics 6 and 7, and has a water retention property. The mat-based sheet member 5 formed by coating the polymer layer 8 is laminated and polymerized over at least two layers, and is fixed to the flame-retardant sheet member 2 at a proper position in the peripheral portion thereof. . As shown in FIGS. 1 and 4, the pair of corner members 9 are the same as the pair of corner members 3 and are made of hard resin and have an L-shaped cross section. An adhesive layer 10 and a release paper 11 are laminated and provided on the contact surfaces of the two opposite edges in the lateral direction. The corner members 3 and 9 are for preventing impregnated water from flowing into the mat-based sheet member 5 inadvertently flowing out during use, which will be described later, and in the longitudinal direction of the flame-retardant sheet member 2. The corner members 3 are adhered and fixed to both end edges of the fire extinguishing mat main body 1 so that the main body 1 of the fire extinguishing mat can be easily wound and its handling such as transportation can be facilitated.

As shown in FIG. 5, the mat of the present invention configured as described above has a pair of corner members 9 at both end edges in the lateral direction of the expanded fire-extinguishing mat body 1, and the release paper 11 thereof. It is adhered and fixed through the exposed adhesive layer 10 by peeling it off, and in this state, it is placed at a site where welding sparks are scattered and dropped in a welding workshop. Next, when a large amount of water is applied to the entire surface of the mat-based sheet member 5 surrounded by the corner members 3 and 9 from above, the water is absorbed and impregnated in the water-absorbing polymer layer 8 having its own weight of about 700 times. Without coming out, the welding sparks fixed on the mat-based sheet member 5 and scattered and dropped on the mat-based sheet member 5 are extinguished instantly by the large amount of water impregnated with water in the polymer layer 8. At this time, the nonwoven fabric 6 does not burn because it contains sufficient water. Also, when the water content becomes low due to evaporation due to the extinction of the welding sparks, it is sufficient to replenish the water, and as long as water is supplied, it can be used any number of times.

[0008]

[Effect of device]

 Therefore, according to the present invention, the welding spark has a high water absorption rate of about 700 times its own weight and is extinguished instantly by the water impregnated in the water-absorbing polymer layer 8. It is reliable, extremely safe, and economical because it can be used many times. Further, since the fire-extinguishing mat body 1 can be easily wound with the corner member 3 fixed in the longitudinal direction as the core, the handling such as transportation is easy.

[Brief description of drawings]

FIG. 1 is a perspective view of an example of a fire extinguishing mat according to the present invention.

FIG. 2 is an enlarged sectional view taken along line AA of FIG.

FIG. 3 is a partially enlarged view of FIG.

FIG. 4 is a cross-sectional view of a pair of corner members.

FIG. 5 is a plan view in a use state.

[Explanation of symbols]

 1 Fire Extinguishing Mat Main Body 2 Flame Retardant Sheet Member 3 Corner Member 4 Adhesive Layer 5 Mat Main Sheet Member 6, 7 Nonwoven Fabric 8 Water Absorbing Polymer Layer 9 A Pair of Corner Members 10 Adhesive Layer 11 Release Paper

Claims (1)

[Scope of utility model registration request] 1. A fire-extinguishing mat placed at a site where welding sparks drop, comprising a fire-extinguishing mat body and a pair of corner members, the fire-extinguishing mat body being opposed to each other in the longitudinal direction of the flame-retardant sheet member. At least two mat-based sheet members, in which corner members are fixed to both edges and a polymer agent layer having water absorbability and water retention is provided between two non-woven fabrics, on the flame-retardant sheet member. The pair of corner members are the same as the corner members in the main body of the fire-extinguishing mat, and are opposed to each other in the lateral direction of the flame-retardant sheet member in the pair of corner members. An adhesive layer is provided on the surface facing both edges of the fire extinguishing mat body, and a release paper is provided on the adhesive layer. A fire extinguishing mat for welding sparks, characterized in that a large amount of water is sufficiently absorbed and impregnated in a mat-based sheet member surrounded by a corner member, and the welding sparks are extinguished instantly by the absorbed water.