JPS6336080Y2 - - Google Patents

Description

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

As shown in FIG. 1, a fiber web is polymerized on one or both sides of a base fabric 1 and then needling is performed to form a felt layer 2, and joining loops 3 provided at both ends of the base fabric 1, In the dryer felt for paper making, which is made into an endless shape by interlocking the felt layers 3 and inserting the core wire 4, a thin gap 5 is created in the width direction between the felt layers 2 at both ends, causing seam marks on the wet paper. This is a contributing factor. For this reason, in the above-mentioned felt canvas, a method is usually adopted in which the end of the felt layer 2 on the traveling direction side is extended into the gap 5 and the web layer 2' covers the joint as shown in FIG. has been done.

However, since the extended web layer 2' is formed by entangling fibers only by needle punching, the condensation strength of the fiber group is weaker than that of the felt layer 2, and when used, that is, in the paper machine, it is While the felt is running, the condensation force of the fibers in the extended web layer 2' is loosened, causing the fibers to collapse and scatter, and there has been a strong desire in the industry to improve this problem.

In addition, as a means for covering the joints of a dryer canvas having a woven structure, the free end of the cloth fixed to the back side of the canvas is used as shown in Japanese Utility Model Application No. 52-165904 or No. 53-111004. It is known that the sections are combed to form tassels, and these tassels are used to cover the joints, or the tassels are made by extending a part of the canvas warp threads to cover the joints. There is. However, in the former type of tassel, the fixing cloth is easily worn out and it is difficult to maintain the covering effect over a long period of time. The number of pieces is limited and the joint cannot be covered sufficiently, making it unsuitable for use in dryer felts.

The present invention was made with the aim of improving the above-mentioned problems, and is a dryer felt for paper making that prevents the occurrence of seam marks at the joint and prevents the cover part of the joint from collapsing and scattering during use. As shown in FIG. 3, a felt layer 2 in which a fiber web is needled is formed on one or both sides of a base fabric 1. In a dryer felt for paper making in which joining loops 3, 3 provided at both ends of the dryer felt are interlocked and a core wire 4 is inserted through it to make it endless, a portion of the warp of the base fabric 1 of the dryer felt body A is attached to the base fabric. Multifilament yarns 6 for forming tufts distributed in the width direction of 1 are woven or intertwined, and the free ends of the multifilament yarns 6 for forming tufts are combed by the combed tufts 7 to cover the upper surface of the joint. is coated.

Multifilament yarn 6 for forming tufts as described above
For example, a synthetic fiber multifilament yarn having a single fiber size of 3 to 5 deniers and a total fineness of 500 to 3000 deniers and having high heat resistance and abrasion resistance is preferable.

As described above, the joint portion of the dryer felt for papermaking according to the present invention consists of a felt layer 2 in which a fiber web is needled on one or both sides of the base fabric 1.
In the dryer felt for paper making, in which the connecting loops 3, 3 provided at both ends of the base fabric 1 are interlocked and the core wire 4 is inserted through them to form an endless shape, the warp of the base fabric 1 of the dryer felt main body A Multifilament yarns 6 for forming tufts distributed in the width direction of the base fabric 1 were woven or sewn into one part of the base fabric 1, and the free ends of the multifilament yarns 6 for forming tufts were combed out. Since the upper surface of the joint part is covered by the tufts 7, the gap 5 between the felt layers 2, 2 when both ends of the dryer felt body A are joined is filled with the tassels 7 and the joint is completed. The upper surface of the tassel 7 is covered with a non-woven fabric to prevent seam marks from forming due to the difference in contact pressure on the paper dryer, and the base of the tuft 7 is firmly held on the side of the dryer felt main body A, thus preventing seam marks from forming during paper making. The tufts 7 do not lose their hair and can maintain their functions for a long period of time. Moreover, the multifilament yarn 6 for forming tufts, which is woven or sewn into the base fabric 1, has great practical effects, such as being useful for holding the needled web.

[Brief explanation of the drawing]

1 and 2 are sectional views of a joint part showing a conventional example, and FIGS. 3 and 4 are an enlarged sectional view and a simplified partial perspective view of a joint part showing an embodiment of the present invention. 1 is a base fabric, 2 is a felt layer, 3 is a joining loop, 4 is a core wire, 6 is a multifilament yarn for forming tufts, 7 is a tuft, and A is a dryer felt body.

Claims (1)

[Scope of utility model registration request] A felt layer 2 in which a fiber web is needled is formed on one or both sides of the base fabric 1.
In a dryer felt for paper making, in which joining loops 3, 3 provided at both ends are interlocked and a core wire 4 is inserted to make it endless, a part of the warp of the base fabric 1 of the dryer felt main body A is attached to the base fabric 1. Multifilament yarn 6 for forming tufts distributed in the width direction of
A dryer felt for papermaking, characterized in that the free ends of the multifilament yarns 6 for forming the tufts are combed out and the upper surface of the joined part is covered with the tufts 7. Joint part.