JPS584958Y2 - Paper dryer - canvas - Google Patents

Description

[Detailed explanation of the invention] This invention forms loops at both ends of the canvas body using the warp threads that make up the canvas body, and threads the core wire through a common hole created by meshing the loops in a butt-like manner, thereby creating an endless shape. This invention relates to an improvement in papermaking dryer canvas that can be joined.

Conventionally, as shown in FIGS. 1 to 3, the papermaking dryer canvas of this type has a first warp that passes between the two weft threads s and b' at the end of the canvas main body a, and is folded back to form a loop C. d and the two weft threads at the end.

The second warp e, which is turned around the outside of warp b' and turned back without forming a loop, and these first warp threads e. The third warp threads are adjacent to the second warp threads d and e and are on the same course as the respective folded ends d' and e'. The folded end d' of the first warp d and the third
The end f' of the warp f, the folded end e' of the second warp e, and the fourth
There are two methods for treating the ends g' of the warps g: a polymerization method and a butting method.

The former, that is, the polymerization method, has both ends d', f', and e as shown in FIG.
' and g' are aligned within a certain range, and the latter, butting method, is when the end faces of both ends d' and f' and e' and g' are brought into contact with each other as shown in Figure 3. be.

In the former case, while the edges are stable, the overlapping part blocks the space, which can reduce air permeability.In the latter case, there is no overlapping part and the air permeability does not decrease, but on the other hand, the ends are stable. There was a risk that the thread would come off.

Furthermore, in either case, there was a risk that marks would be attached to the wet paper.

That is, in the former case, the overlapping part is bulky, and in the latter case, the abutted part sometimes protrudes toward the wet paper paper side.

This invention solves the drawbacks of the conventional method mentioned above, and it is a paper manufacturing method that has stable edges, does not reduce the permanency, and does not cause uneven drying of wet paper. The purpose is to provide dryer canvas for use.

An embodiment of this invention will be described below with reference to FIGS. 4 to 7.

1 is the canvas body, 2 is the first warp, 3 is the second warp, 4 is the third warp, 5 is the fourth warp, 6 is the front weft (lower side in the diagram)
, 7 are back wefts (upper side in the figure).

The front weft 6 may be a synthetic fiber spun yarn, multifilament, or monofilament, but the back weft 7
It is preferable to use multifilament or monofilament synthetic fibers for each of the warps 2, 3, 4.5.

The first warp 2 is the two wefts 6 at the ends of the canvas body 1.
, 70 to form a loop 8.

Further, the second warp 3 goes around the outside of the terminal wefts 6 and 7 and is folded back without forming a loop.

The third warp 4 is adjacent to the first warp 2 and is on the same course as the folded end 2' of the first warp 2.

The fourth warp 5 is adjacent to the second warp 3 and is on the same course as the folded end 3' of the second warp 2.

Thus, the folded end 2' of the first warp 2 and the end 4' of the third warp 4 intersect with each other between the front and back wefts 6°7, as shown in Figure 5, and the back side canvas main body 1 It is cut so that it does not protrude into the surface.

In other words, the folded end 2' of the first warp 2 is connected to one back weft 7.
It goes around the outside of A and passes between the next front and back wefts 6B and 7B, then goes around the outside of the front and back weft 6C, and then passes through the weft 6B.
Pass through between the front and back wefts 6D and 7D next to C, and the back weft 7D
and 7E, while the end 4' of the third warp 4 goes around the outside of the back weft 7E and penetrates between the front and back wefts 6D, 7D and 6C, IC in front of the back weft 7E. Weft 7
It protrudes outward from between B and IC.

That is, the ends 4' of the third warp 4 are the wefts 7c and 7d2.
Make it protrude from the canvas body surface on the back side of the main divider S.

Therefore, both ends 2' protruding from the back surface of the canvas body 1
The protruding portions 4' and 4' are cut flush with the back surface of the canvas body 1 or below.

Therefore, both ends 2' and 4' intersect P near the front and back wefts 6D and 7D.

FIG. 6 is an enlarged view of this intersection P.

In addition, the folded end 3' of the second warp 3 and the end 5' of the fourth warp 5 also cross each other between the front and back wefts 6 and 7 as shown in Figure 7.
It is cut so that it does not protrude onto one surface of the canvas body on the back side.

The relationship between both ends 3' and 5' is that of the end 2 of the first warp 2.
' and the end portion 4' of the third warp 4, and the explanation will be omitted.

It is necessary that the intersection P between the ends 2' and 4' and the intersection P' between the ends 3' and 5' are not aligned on the same line in the width direction of the canvas body 1.

Therefore, it is spread over several months.

This is for convenience and to eliminate bulk when cutting the ends of each warp.

In addition, Fig. 8 shows an example in which the wefts are triple-layered, and four types of warp threads are used: the first warp thread 2, the second warp thread 3, the third warp thread 4, and the fourth warp thread 5. The folded end 2' and the end 4' of the third warp 4, and the folded end 3' of the second warp 3 and the fourth
The relationship with the ends 5' of the warp threads 5 is the same as in the above case.

As can be seen from the above explanation, the Kono design involves the first warp passing between the two wefts at the end of the canvas body to form a loop and being folded back, and the first warp passing around the outside of the two wefts at the end to form a loop. The second warp threads are folded back without being formed, and these first warp threads are folded back without being formed.
The third warp threads are adjacent to the second warp threads and are on the same course as each turn. In the dryer canvas for papermaking constructed by the fourth warp, the first
When the folded end of the warp and the end of the third warp, and the folded end of the second warp and the end of the fourth warp are crossed between the front and back wefts, the first and second warps are crossed. The ends of each of the second warp threads are cut to a length that does not protrude onto the back surface of the canvas main body, and the third warp threads are cut to a length that does not protrude from the back side of the canvas main body surface. Fourth
The ends of each warp are cut at a distance of two wefts to a length that does not protrude into the surface of the canvas body on the back side S, so that the folded end 2' of the first warp 2, the end 4' of the third warp 4, and 2nd warp 3
The folded end 3' and the end 5 of the fourth warp 5 intersect with each other P
.

1. , , 2nd bone warp 2,
3, both the front and back wefts 6 and 7 are well knotted, and the 3rd. The fourth warp threads 4 and 5 are separated by two back weft threads 7 and are well entwined with the back weft threads, so that they are securely fixed and the structure is stabilized.

Therefore, the loops do not loosen while the canvas is running, and the intersections P of the warp ends.

Unlike when P' is polymerized, it only contacts at one point and does not block the space, so the air permeability is hardly lowered compared to the main part of the canvas body 1, and uneven drying does not occur.

Moreover, with this invention, when the end surface of each warp thread is located on the back side of the canvas main body 1, it is cut so that it does not protrude beyond the back surface, so the end surface of the warp threads will not be pushed up by the thread during running, and will not be wet. It has various excellent effects such as not leaving any marks on the paper.

[Brief explanation of the drawing]

Figures 1 to 3 show conventional examples; Figure 1 is a plan view;
Fig. 2 is a side sectional view obtained by the polymerization method, Fig. 3 is a side sectional view obtained by the butting method, Figs. 4 to 7 show an embodiment of this invention, and Fig. 4 is a plan view. , FIG. 5 is a side cross-sectional view showing the relationship between both ends of the first warp and the third warp, FIG. 6 is an enlarged perspective view of the intersection of both ends, and FIG.
A side cross-sectional view showing the relationship between both ends of the warp threads, and FIG. 8 is a side cross-sectional view showing another example of this invention. 1... Canvas main body, 2... First warp, 3... Second warp, 4... Third warp,
5... 4th warp, 6... Front weft, 7...
...Back weft, 8...Loop, P. P'...Cross point.

Claims (1)

[Scope of utility model registration request] The i-th warp passes between the two wefts at the end of the canvas body and is folded back to form a loop, and the second warp passes around the outside of the two wefts at the end and is folded back without forming a loop. , these first. The third warp threads are adjacent to the second warp threads and are on the same course as each turn. In a dryer canvas for papermaking configured with a fourth warp, the folded end of the first warp facing each other in the same course, □ the end of the third warp,
When the folded end of the 2nd warp and the end of the 4th warp cross each other between the front and back wefts, the 1st. The ends of the second warp threads are cut to a length that does not protrude into the canvas body surface on the back side, and the ends of the third □J fourth warp threads are separated by two wefts to a length that does not protrude into the canvas body surface on the back side. A dryer canvas for papermaking that is cut into strips.