JPS6028720Y2 - Joint part in paper dryer canvas - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a joint part of a dryer canvas for papermaking.

A wide variety of joints for paper dryer canvases with joint loops at the ends have already been known, but the simplest method is the one shown schematically in Figures 1 and 2. number 10 at the end of the canvas body 1
Leaving the end weft 2 of the book, a predetermined number of wefts on the main body side are pulled out to form a warp-only section 3, and then the warp-only section 3 is folded back from its center to form a loop 4, and the end is attached to the main body. A commonly used forming method is to overlap the sides and then machine-sew the overlapping portions 5.

However, the joint obtained as described above has a step 6 at the folded end, which not only makes running in the paper machine unsmooth, but also causes problems such as the warp threads at the end being pulled out during running. The problem was that this occurred.

The present invention was made with the aim of improving the above-mentioned problems, and as shown in FIG.
The warp and weft at the ends of the folded portion 7 which are overlapped on the canvas body side to form the joining loop 4 are melted and deformed into a knife shape, and the folded portion 7 is sewn 5 to the canvas body 1 side. It is something.

To explain more specifically, the canvas main body 1 woven from thermoplastic synthetic resin monofilament or multifilament is woven with a number 1 at the end as described above.
After removing a predetermined number of wefts from the main body side, leaving the end weft of $0, to form a warp-only part 3, sewing is performed by machine sewing 8 with thermofusible sewing thread along the endmost weft. After that, a baking iron 9, for example, is applied along the edge to melt the warp and weft at the end along with the thermofusible sewing thread, and heat the yarn so that it becomes sharp toward the tip. By processing, a knife-shaped end portion 10 made of resin as shown in FIG. 4 can be obtained.

Thereafter, the warp-only portion 3 is folded at the center using a commonly used method, and the folded portion 7 is folded into the canvas main body 1.
By sewing 5 on the sides, the joint part of the present invention can be formed.

In the rope example, a plain weave canvas is shown, but it goes without saying that the invention can also be applied to canvases such as double weave or triple weave.

As described above, in the papermaking canvas in which the warp and weft are composed of thermoplastic synthetic resin threads, the joint portion of the papermaking canvas in the present invention is overlapped on the canvas body 1 side to form the joining loop 4. The warp and weft at the end of the folded part 7 are melted and deformed into a knife shape, and the folded part 7 is sewn 5 to the canvas body 1 side. The parts are polymerized with a gentle slope, so that the canvas runs smoothly on the paper machine.

Moreover, there is no concern that the weft yarn at the end of the folded portion 7 will come out, and troubles from the joint portion during running can be eliminated.

[Brief explanation of drawings]

Figures 1 and 2 are schematic perspective views and enlarged sectional views of a conventional joint forming method, and Figures 3 and 4 are enlarged views of an embodiment of the joint of the present invention. FIG. 1 is the canvas body, 2 is the end weft, 3 is the warp only, 4 is the loop, 5 is the stitching, 7 is the folded section, 8 is the stitching with thermofusible sewing thread, and 10 is the knife-shaped end.

Claims (1)

[Scope of utility model registration request] In a dryer canvas for papermaking in which the warp and weft are composed of thermoplastic synthetic threads, the sewing 5 is overlapped on the canvas body 1 side to form a joining loop 4.
A joint part in a dryer canvas for papermaking, characterized in that the warp and weft at the end of the folded part 7 are melted and deformed into a knife shape.