JP5959004B2 - Bonding method for chemical protective clothing - Google Patents

Description

The present invention relates to a method of joining a piece of chemical protective clothing.

As shown in FIG. 1, two cloth pieces 12, 13 having a multilayer structure having a synthetic rubber film surface layer, a synthetic rubber film back layer, and at least a chemical-permeable resin film intermediate layer are arranged on one side 12 a and one side 13 a. Are overlapped by facing each other, and the cloth overlapped portion along the sides 12a and 13a and in the vicinity of the sides 12a and 13a is stitched (generation of the stitching line 14), and the stitching line 14 is sandwiched therebetween and the stitches are opposed to the side 12a. The cloth 12 is folded back in the direction of the stitching line 14 while leaving a portion having a predetermined width (generation of the folding line 12b), the triple overlap portion in the vicinity of the folding line 12b is stitched (generation of the stitching line 15), and the folding line 12b is interposed therebetween. The synthetic rubber tape 16 is attached to the cloth pieces 12 and 13 so as to cover the predetermined width portion of the cloth pieces 12 and 13 and the folding line 12b, and the synthetic rubber tape 16 and the cloth pieces 12 and 13 are superposed using an external heat source. Part Joining a piece of cloth for chemical protective clothing, characterized by welding and bonding a rubberized cloth 17 so as to cover the side 12a, 13a with a predetermined width portion of the piece of cloth 12, 13 sandwiching the side 12a, 13a therebetween The method is conventionally practiced in the chemical protective clothing manufacturing process. When the chemical protective clothing is formed, the synthetic rubber tape 16 is exposed to the outside air, and the rubberized cloth 17 is exposed to the inside air.
In the above method, the synthetic rubber tape 16 is welded to the outside air side of the overlapping portion of the cloth pieces 12, 13 and the folding line 12b, and the rubberized cloth 17 is attached to the inside air side of the overlapping portion of the cloth pieces 12, 13 and the sides 12a, 13a. Is bonded to block the gap between the overlapping portions of the cloth pieces 12 and 13 from the outside air and the inside air, thereby ensuring the airtightness and chemical resistance of the joint portion of the cloths 12 and 13.

In the conventional joining method, the joined portion is a laminate of five layers, and a large step is formed between the joined portion and the cloth piece portion other than the joined portion, which deteriorates the appearance and comfort of the chemical protective clothing. There's a problem.
An object of this invention is to provide the joining method of the cloth piece for chemical protective clothing in which the level | step difference between a fabric piece part other than a junction part and a junction part is few compared with the conventional method.

In order to solve the above-described problems, in the present invention, two sheets of cloth for chemical protective clothing having a multilayer structure having a thermoplastic resin film surface layer, a thermoplastic resin film back layer, and at least a chemical-permeable resin film intermediate layer. The piece is overlapped with the surface layer of one piece of cloth and the surface layer of the other piece of cloth, and one side of one piece of cloth and one side of the other piece of cloth are placed opposite each other and overlapped. The two pieces of cloth that are one-sided and stitched together, and are opened by rotating one of the two pieces of cloth overlapped relative to the other with the one side as the center of rotation. A chemical protection characterized in that a co-fabric tape is attached to the surface layer and the back layer of the two pieces of cloth along the linear stitching portion to seal the stitching portion. Provided is a method for joining clothing cloth pieces.
In the chemical protective clothing cloth joining method according to the present invention, the joining portion is a three-layer laminate, and the level difference between the joining portion and the cloth portion other than the joining portion is reduced as compared with the conventional joining method. .
By using a piece of cloth to be joined and a tape of common cloth, inventory management of the material becomes easy.
The co-fabric tape is most preferably welded to the front and back layers of the two pieces of fabric from the viewpoint of improving the sealing performance, but the surface layer of the two pieces of fabric that comes into contact with the outside air when sewed on chemical protective clothing. In this case, a co-fabric tape may be welded, and the co-fabric tape may be adhered to the back layer of the two pieces of cloth that come into contact with the inside air.
The thermoplastic resin film for forming the front surface layer and the back surface layer is a dielectric, and welding is preferably performed by high-frequency dielectric heating, but may be performed by other methods. Polyurethane resin film or polyvinyl chloride resin film is a material suitable for welding by high frequency dielectric heating.
In order to protect the chemical-permeable resin film intermediate layer, the chemical protective clothing cloth preferably has a lattice-woven cloth intermediate layer.

It is sectional drawing of the junction part of the cloth piece for chemical protective clothing joined by the prior art. It is sectional drawing of the cloth for chemical protective clothing used with the joining method which concerns on the Example of this invention. It is a figure which shows the procedure of the joining method which concerns on the Example of this invention. (A) is a top view, (b) is a bb arrow line view of (a). It is a figure which shows the procedure of the joining method which concerns on the Example of this invention. (A) is a top view, (b) is a bb arrow line view of (a).

The joining method of the cloth piece for chemical protective clothing which concerns on the Example of this invention is demonstrated.
As shown in FIG. 2, the cloth 1 for chemical protective clothing includes a polyurethane resin film surface layer 1a positioned on the outside air side when formed on the protective clothing, and a back surface of the polyurethane resin film positioned on the inside air side when formed on the protective clothing. Layer 1d, lattice layer fabric intermediate layer 1b sandwiched between surface layer 1a and back surface layer 1d and located near surface layer 1a, and surface layer 1a and back layer 1d and back layer 1d A multilayer structure composed of an EVOH (ethylene / vinyl alcohol copolymer resin) film intermediate layer 1c, which is a chemical-permeable resin film located close to each other, and an adhesive disposed between the layers to bond the layers. is there.
A plurality of cloth pieces formed by cutting the cloth 1 into a predetermined shape are joined to produce a chemical protective suit.

As shown in FIG. 3, in the chemical protective clothing cloth joining method according to the present embodiment, one side 2a of the cloth piece 2 with the surface layer 1a facing downward in the figure and the surface layer 1a upward in the figure. As shown in FIG. 4, the side 3a of the cloth piece 3 facing is opposed to each other, the cloth pieces 2 and 3 are overlapped, the sides 2a and 3a overlapped facing each other are stitched and stitched. The cloth piece 2 is opened by rotating relative to the cloth piece 3 with the side 2a as the center of rotation, covering the line stitching portion 4 of the cloth pieces 2, 3 which are flush with each other and the line stitching portion 4 Then, the co-fabric tape 5 is adhered to the surface layer and the back surface layer of the cloth pieces 2 and 3 by high-frequency dielectric heating to seal the linear stitching portion 4.
In the chemical protective clothing cloth joining method according to the present embodiment, the joined parts of the cloth pieces 2 and 3 become a three-layer laminate, and the joined parts and the cloth pieces other than the joined parts are compared to the conventional joining method. The step between is reduced.
Since the cloth 1 has a thermoplastic polyurethane resin film surface layer and a polyurethane resin film back layer, the co-fabric tape 5 can be easily welded to the cloth pieces 2 and 3 by high-frequency dielectric heating.
Since the lattice woven cloth intermediate layer 1b exists on the outside air side of the EVOH film intermediate layer 1c, the EVOH film intermediate layer 1c is protected from damage due to external force.
By using the cloth pieces 2 and 3 and the tape 5 of the same cloth, stock management of the material becomes easy.
The co-fabric tape 5 is most preferably welded to the front and back layers of the two cloth pieces 2 and 3 from the viewpoint of improving the sealing performance. However, the two cloths that come into contact with the outside air when sewed on chemical protective clothing. The co-fabric tape 5 may be welded to the surface layer of the piece, and the co-fabric tape 5 may be bonded to the back layer of the two pieces of cloth that come into contact with the inside air.

In the above embodiment, the polyurethane resin film is used for the surface layer and the back surface layer of the cloth. However, a thermoplastic resin film that can be welded by high frequency dielectric heating other than the polyurethane resin film may be used. The polyvinyl chloride resin film can be suitably used for the surface layer and the back layer of the fabric.
The width of the tape 5 is appropriately determined for each resin film to be used.
The dielectric resin film is preferably welded by high-frequency dielectric heating, but the resin film may be welded using another heating method.

The present invention can be widely used for manufacturing chemical protective clothing.

1 Chemical protective clothing cloth 2, 3 Cloth piece 4 Linear stitching part 5 Co-fabric tape

Claims (5)

Two pieces of cloth for a chemical protective clothing having a multilayer structure having a thermoplastic resin film surface layer, a thermoplastic resin film back layer, and at least a chemical-permeable resin film intermediate layer, a surface layer of one piece and the other The surface layer of the cloth piece is opposed and one side of one cloth piece and the other side of the other cloth piece are opposed to each other and overlapped, and the one side overlapped and overlapped is stitched by stitching and stitching, One of the two pieces of cloth is opened by rotating relative to the other about the one side as a center of rotation, and covers the line stitches of the two pieces of cloth that are flush with each other, and the line stitches A method of joining a piece of cloth for chemical protective clothing, comprising: bonding a tape of co-fabric to the front and back layers of the two pieces of cloth to seal the stitched portion. The method for joining chemical protective clothing cloth pieces according to claim 1, wherein a tape of co-fabric is welded to the front surface layer and the back surface layer of the two cloth pieces. It is characterized in that a co-fabric tape is welded to the surface layer located on the outside air side when formed on the chemical protective clothing, and a co-fabric tape is adhered to the back layer located on the inside air side when formed on the chemical protective clothing. The method for joining a piece of chemical protective clothing according to claim 1. The bonding of the cloth piece for chemical protective clothing according to any one of claims 1 to 3, wherein the thermoplastic resin film forming the front surface layer and the back surface layer is a polyurethane resin film or a polyvinyl chloride resin film. Method. 5. The chemical protective clothing cloth joining method according to any one of claims 1 to 4, wherein the chemical protective clothing cloth has a lattice woven cloth intermediate layer.

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