JPH0959889A - Paper making drier canvas, its joint and paper making needle canvas - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute joint loops with reinforcing warp yarns by mutually interlacing all of the reinforcing warp yarns and all of the filling yarns in weaving units of a drier canvas. SOLUTION: In this paper making drier canvas 20, a part of N (e.g. 8) warp yarns constituting a weaving unit of the canvas 20 and part of or all of M (e.g. 8) filling yarns constituting the weaving unit of the filling yarns on the surface and/or the back of the canvas are replaced with monofilaments excellent in heat resistance, wear resistance, chemical resistance, strength, etc. All of the warp yarns of the monofilaments and all of the filling yarns of the monofilaments are mutually interlaced in the weaving unit. Joint loops are formed with a part or all of the warp yarns of the monofilaments.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a papermaking dryer canvas used in a dry part of a papermaking machine, a joint part of a papermaking dryer canvas, and a papermaking needle canvas using the same.

[0002]

2. Description of the Related Art Dryer canvases for papermaking used in the dry part of a paper machine are known to be used in the dry part due to an increase in the ratio of waste paper in the papermaking process and the use of fillers in the neutral papermaking process. Soil adhesion is increasing, and as a result, monofilaments having antifouling properties and excellent washability are often produced.

As the material of the monofilament yarn, a synthetic fiber yarn of polyethylene terephthalate (PET), which is a kind of polyester, is usually used.

However, although PET is excellent in dry heat resistance, it is inferior in alkali resistance and wet heat resistance, and there has been a problem that its life is shortened depending on use conditions.

On the other hand, recently, along with the speeding up of paper machines and the promotion of energy saving measures, the trend of completely sealing the hood and operating the high dew point has become stronger, and the atmospheric conditions of the dryer part have become more severe. That is, the steam pressure of the dryer part is set to a high value as the speed of the paper machine is increased, and the paper dryer canvas is exposed to high-temperature steam, which causes a problem that thermal deterioration progresses in a relatively short period of time. ing. Therefore, PP (polypropylene) or PET cannot be used.

Therefore, recently, a dryer canvas using fibers made of a heat-resistant synthetic resin such as polyetheretherketone (hereinafter referred to as PEEK) or polyphenylene sulfide (hereinafter referred to as PPS) has also been used. ing.

The price of PEEK or PPS is P
This is much higher than that of ET. Therefore, if all of the warp yarns and weft yarns of the dryer canvas are made of PEEK or PPS, the product price will increase significantly and there is a problem in terms of economy.

The above is related to the improvement in heat resistance. However, in addition to heat resistance, the dryer canvas is required to have excellent performances such as abrasion resistance, chemical resistance and strength depending on the application. Is coming.

Therefore, various proposals have been made on how to realize a dryer canvas suitable for the use of the required specifications while reducing the cost increase.

[0010] As one of them, for example, Shoukai 63-7
No. 8098 proposes that a canvas warp is woven with an ordinary monofilament such as polyester, polyamide, or polypropylene and a heat-resistant monofilament such as PEEK or PPS to be reinforced, and is reinforced with the heat-resistant monofilament. The ratio is 1: 1 to 3: 1 in the ratio of ordinary monofilament such as polyester, polyamide and polypropylene and the heat resistant monofilament such as PEEK and PPS, that is, the ratio of the reinforcing yarn is 50.
(%) To 25 (%) have been proposed.

Also, in Japanese Utility Model Publication No. 63-60499 and Japanese Utility Model Publication No. 2-53997, only the ears of the canvas are PPS, P.
It has been proposed to reinforce with a heat resistant monofilament such as EEK.

The above proposals use a heat-resistant monofilament as a warp at a predetermined ratio or partially, and with respect to heat resistance, a reinforcing yarn is used to cope with heat deterioration. The portion of the canvas reinforced with heat-resistant yarn has little heat deterioration and little decrease in strength. Therefore, the canvas as a whole can maintain the dimensional stability as a canvas, can retain a sufficient strength for use, and can extend the life of the canvas.

This means that the warp yarns and weft yarns used in the canvas are not always the same in some cases, that is, the warp yarns 1
This means that it is not necessary to use a monofilament having excellent heat resistance etc. for 00% and weft 100%. That is, depending on the application, there are cases where only canvases that use reinforcing yarns for all warp and weft can be used in places where the use conditions are extremely severe, but the use conditions are not so strict
Alternatively, in the case where the equipment has been modified so that the usage conditions are rather strict in the place where the usage conditions have not been so strict in the past, it is sufficient to carry out the reinforcement at a predetermined ratio that most efficiently meets the conditions.

The above is the conventional technique for reinforcing the main body of the dryer canvas, but the reinforcement of the joint at the end of the canvas is as important as the reinforcement of the main body. A papermaking dryer canvas is generally manufactured as an endless woven fabric, and both ends are joined to be endless when used. Therefore, the joint is required to be easy to join and to have the same shape as the canvas body so as not to exert a bad influence such as a mark on the paper sheet.

To meet this requirement, for example
Japanese Patent Publication No. 46483 discloses a canvas joint as shown in FIG. This joint is a so-called warp loop joint in which the core wire 5 is inserted into a common hole formed by combining the joining loops 1 formed of a part of the warp yarns 2 and joined endlessly. This type of joint has the same surface smoothness, breathability, thickness, and flexibility as the main unit, and can be used for all paper qualities from packaging paper, hybrid paper to high-quality paper and thin paper, and core wire insertion is also easy. It can be done.

The joining loop 1 is manufactured by using the warp yarns 2. Since the number of the joining loops 1 is usually 1/2 to 1/4 of the weave density of the warp yarns 2, the strength is weak and the joint portion 10 In some cases, it had to be replaced during use due to heat deterioration.

Therefore, even if the main body of the canvas is reinforced with the reinforcing yarn having excellent heat resistance, the joining loop 1 of the joint portion 10 is reinforced.
However, if the life of the canvas is shortened, the life of the entire canvas will be shortened. Therefore, it is required to create the joining loop 1 that is suitable for the reinforcement of the canvas body.

As a method of reinforcing the same, for example, SAIKAI Sho 63
No. 78098 discloses forming a joining loop from PEEK or PPS of reinforced warp yarns.

However, Japanese Utility Model Laid-Open No. 78098/1988 does not disclose concretely what structure the reinforcing thread for reinforcing the canvas body should be reinforced, and the structure of the reinforcing thread and the loop for joining are not disclosed. It also does not disclose how to do so. In FIG. 8, 2 is a warp, 3,
Reference numeral 3'denotes a front weft thread, 4 a front weft pressing warp thread, and 10 a joint portion.

[0020]

However, the warp reinforced on the main body side of the dryer canvas is reinforced at the point where it is entangled with the original weft that is not reinforced without being woven with the reinforced weft. If the warp and the weft which are not used are thermally deteriorated during use, the reinforced warp is loosened and the reinforcing effect is lost. In particular, in a warp loop joint using a reinforced warp, the function of the joint is lost when the reinforced warp is loosened.

Hereinafter, the structural condition of the reinforcing warp and the reinforcing weft will be described in relation to the usage ratio of the reinforcing yarn. For convenience of explanation, FIG. 61 is used as an example of the organization of the dryer canvas. FIG. 61 shows the design of a known dryer canvas 20, which is a weft double weave design in which eight warps 1 to 8 form one repeat and the wefts are repeated in units of 8 as shown in.

The term "reinforcing yarn" as used herein means a yarn having excellent properties such as heat resistance, abrasion resistance, chemical resistance, and tenacity as compared with the original yarn. In some cases, it is necessary to provide, and in some cases, it is sufficient to have excellent performance. For example, PEEK or PPS or the like for heat resistance, polyamide for abrasion resistance, aromatic polyamide, PEEK or PPS for chemical resistance, polyamide, aromatic polyamide or PEEK for high strength can be used. .

First, in FIG. 61, let us consider a case in which two of the entire weft yarns and two weft yarns are reinforcing yarns. This reinforced state is shown in FIG. here,
Reinforcing yarns for weft yarns are indicated by a thick circle, and reinforcing yarns for warp yarns are indicated by enclosing a reference number in a circle. In this case, the reinforcement ratio indicating the reinforcement ratio of the weft is 25 (%) because 2 out of 8 are reinforced.
Shall be represented. Similarly, for example, the reinforcement ratio of the weft of FIG. 14 is 50 (%), FIG. 20 is 75 (%), and FIG. 66 is 10%.
Expressed as 0 (%).

I. Weft Reinforcement Ratio 25 (%) As shown in FIG. 1, when the weft reinforcement ratio is set to 25 (%), when the reinforcement ratio of the warp is changed, the structure of the reinforced warp and the weft is conventional. Consider what happens with the technology. Below, the reinforcement ratio of the warp is 25 (%), 5
Description will be given separately for each case of 0 (%), 75 (%), and 100 (%).

(1) Reinforcement rate of warp 25 (%) Reinforce the warp of FIG. 1 out of 8 repeats and 2 out of 8 repeats. In this case, regarding the design on the main body side of the canvas 20, the relationship between the design of each warp and the weft is shown in FIG.
It becomes like (H).

The joint portion 10 in this case is shown in FIG.
As shown in (C), the joining loop 1 can be made of a warp reinforcing yarn and. In FIG. 2, the reinforced warp is wet with a solid line, and the non-reinforced warp is shown with a broken line.

However, on the main body side of the canvas 20, neither the weft reinforcing thread nor the warp reinforcing thread is organized. That is, although it is possible to form the joining loop 1 with the reinforcing yarn of the warp yarn, it is understood that the effect of reinforcing the main body side of the canvas 20 is not sufficiently achieved.

(2) When the warp reinforcement ratio is 50 (%) As in the above case, the weft reinforcement ratio is 25 (%) and the warp reinforcement is shown in FIG.
Reinforcing about 4 of 1 to 8 of the books (5
Consider the case of 0 (%) reinforcement.

As shown in FIGS. 5 (A) and 5 (C), the joining loop 1 can be made of a warp reinforcing yarn. The reinforcing yarn is a weft pressing warp.

In this case, the organization of the body of the canvas 20 is as shown in FIGS. As shown in (C) and (G) of the figure, the reinforced weft is designed with the reinforced warp and the reinforced weft is not woven with any reinforced warp. That is,
Although it is possible to form the joining loop 1 with the reinforcing yarn of the warp and the main body side of the canvas 20, only half of the reinforced weft is woven with the reinforced warp, so that the reinforcing effect is sufficiently exerted. I can't say that.

(3) When the warp reinforcement ratio is 75 (%) Similarly, as shown in FIG. 7, 1 to 8 of 1 repeat of 1 warp
Reinforced about 6 of
Consider the case of 5 (%) reinforcement. FIG. 9 (A)
As shown in (C), the joining loop 1 can be made of a warp reinforcing yarn.

In this case, the organization of the body of the canvas 20 is
It becomes like FIG. 10 (A)-(H). As shown in (C) and (G) of the same figure, the reinforced weft is designed with the reinforced warp and the reinforced weft is not organized with any of the reinforced warps. That is, although the joining loop 1 can be formed with the reinforcing yarn of the warp and the half of the reinforced weft is not organized with the reinforced warp on the main body side of the canvas 20, the reinforcing effect can be sufficiently exerted. That is not the case.

(4) Reinforcement rate of warp 100 (%) Similarly, as shown in FIG.
Consider the case of reinforcing all (100 (%) reinforcement). As shown in FIGS. 12 (A) and 12 (C), the joining loop 1 can be made of a warp reinforcing yarn.

In this case, the organization of the body of the canvas 20 is
It becomes like FIG. 13 (A)-(H). As can be seen from the figure, both the reinforced weft yarn and the reinforced weft yarn are constituted by warp reinforced yarns and. In this case, the reinforcing effect is sufficiently exerted.

II. Weft reinforcement ratio 50 (%) Next, as shown in FIG.
Consider the case of reinforcing four (4), and (reinforcement ratio 50 (%)). Below, the reinforcement ratio of the warp is 25
(%), 50 (%), 75 (%), and 100 (%) will be described separately.

(1) When the warp reinforcement ratio is 25 (%) The reinforcement of the warp and weft in this case is as shown in FIG. The joint portion 10 is shown in FIG. 2, and the tissue of the main body side of the canvas 20 is shown in FIG. 63.

(2) When the reinforcement rate of the warp is 50 (%) The reinforcement state of the warp and the weft in this case is as shown in FIG. The joint portion 10 is shown in FIG. 5, and the tissue on the main body side of the canvas 20 is shown in FIG.

(3) When the warp reinforcement ratio is 75 (%) The reinforcement of the warp and weft in this case is as shown in FIG. The joint portion 10 is shown in FIG. 9, and the structure of the canvas 20 on the main body side is shown in FIG.

(4) When the warp reinforcement ratio is 100 (%) The reinforcement of the warp and weft in this case is as shown in FIG. The joint portion 10 is shown in FIG. 12, and the tissue on the main body side of the canvas 20 is shown in FIG.

In this case, as for the above (1), (2), (3) and (4), the joining loop 1 can be made of reinforced warp yarns.

However, in the case of (1), three out of four reinforced wefts are not structured with the reinforced warp, so that it cannot be said that the reinforcing effect is sufficiently exerted.

In the case of (2), half and half of the reinforced weft yarns are not designed with the reinforced warp yarns, so that it cannot be said that the reinforcing effect is sufficiently exerted.

In the case of (3), 1/4 of the reinforced wefts
In this case, it cannot be said that the reinforcing effect is sufficiently exerted, because it is not designed with the reinforced warp.

In the case of (4), the reinforced weft yarns are all designed with the reinforced warp yarns. Therefore, the effect of reinforcement is fully exerted.

III. Weft Reinforcement Ratio 75 (%) Next, as shown in FIG.
,,, and 6 are reinforced (reinforcement ratio 75
(%)). Below, the reinforcement ratio of the warp is 25 (%), 50 (%), 75 (%), 100
(%) Will be explained separately for each case.

(1) When the warp reinforcement ratio is 25 (%): The warp and weft reinforcements in this case are as shown in FIG. The joint portion 10 is shown in FIG. 2, and the tissue on the main body side of the canvas 20 is shown in FIG.

(2) When the reinforcement ratio of the warp is 50 (%) The reinforcement state of the warp and the weft in this case is as shown in FIG. The joint portion 10 is shown in FIG. 5, and the tissue on the main body side of the canvas 20 is shown in FIG.

(3) When the warp reinforcement ratio is 75 (%) The reinforcement of the warp and weft in this case is as shown in FIG. The joint portion 10 is shown in FIG. 9, and the tissue on the main body side of the canvas 20 is shown in FIG.

(4) When the reinforcement ratio of the warp is 100 (%) The reinforcement state of the warp and the weft in this case is as shown in FIG. The joint portion 10 is shown in FIG. 12, and the tissue on the main body side of the canvas 20 is shown in FIG.

As for the above (1), (2), (3) and (4), the joining loop 1 can be made of reinforced warp yarns.

However, in the case of (1), of the 6 reinforced wefts, and is designed as a reinforcing warp,
Therefore, it cannot be said that the reinforcing effect is sufficiently exerted, because the four yarns are not designed with the reinforced warp yarns.

In the case of (2), of the reinforced wefts, half and of the wefts are designed as reinforced warps, but the other half and of the wefts are not designed as reinforced warps, so that the reinforcing effect is sufficiently exerted. It cannot be said that it is done.

In the case of (3), it cannot be said that the reinforcing effect is sufficiently exerted because the reinforced weft is not structured with the warp.

In the case of (4), all the reinforced wefts are structured by the warp reinforced yarns. In this case, the reinforcing effect is sufficiently exerted.

IV. Next, as shown in FIG. 66,
Consider the case where all eight of these are reinforced (reinforcement rate 100 (%)). Below, the reinforcement ratio of the warp is 25 (%), 5
The case of 0 (%) and 75 (%) will be described separately.

(1) When the reinforcement ratio of the warp is 25 (%) The reinforcement state of the warp and the weft in this case is as shown in FIG. The joint portion 10 is shown in FIG. 2, and the tissue on the main body side of the canvas 20 is shown in FIG. 67.

(2) When the reinforcement ratio of the warp is 50 (%) The reinforcement state of the warp and the weft in this case is as shown in FIG. The joint portion 10 is shown in FIG. 5, and the tissue on the main body side of the canvas 20 is shown in FIG. 69.

(3) When the reinforcement rate of the warp is 75 (%) The reinforcement state of the warp and the weft in this case is as shown in FIG. The joint portion 10 is shown in FIG. 9, and the organization on the main body side of the canvas 20 is shown in FIG. 71.

Regarding the above (1), (2) and (3), the joining loop 1 can be made of reinforced warp yarn.

However, in the case of (1), of the 8 reinforced weft yarns, 6 of the weft yarns are not organized with the reinforced warp yarns, so it can be said that the reinforcing effect is sufficiently exerted. Absent.

In the case of (2), 1 out of 8 reinforced wefts
It cannot be said that the effect of reinforcement is sufficiently exerted, because the 4 pieces of / 2 ,,,, and 4 are not designed with the reinforced warp.

In the case of (3), it cannot be said that the reinforcing effect is sufficiently exerted, because two and eight of the reinforced wefts are not structured with the reinforced warp.

From the above results, since the joining loop 1 can be made of the reinforced warp yarn, the strength of the joint portion can be improved. However, from the viewpoint of whether the reinforced warp yarn and the reinforced weft yarn have 100% design, In other words, the results shown in Table 1 are obtained from the viewpoint of whether the reinforced weft yarn and the reinforced warp yarn are effectively organized and whether the reinforcing effect is sufficiently exerted. In the table, ◯ indicates that all of the reinforced wefts were designed with all of the reinforced warps, and X indicates that only part of the reinforced wefts was designed with the reinforced warps or no design at all.

[0064]

[Table 1]

As can be seen from this result, regardless of the reinforcement ratio of the weft yarn, only when the reinforcement ratio of the warp yarn is 100 (%), that is, when all the warp yarns are replaced with the reinforcement yarns, all the reinforced weft yarns are Since it will form a structure with the reinforced warp yarn, the reinforcing effect can be sufficiently exerted. However, if the reinforcing rate of the warp is not 100 (%), only a part of the reinforced weft will be designed with the reinforced warp, and the reinforcing effect will not be sufficiently exhibited.

Therefore, it is necessary that at least the reinforced warp yarn is designed in any of the reinforced weft yarns. In particular, if the reinforced warp and the reinforced weft can all be structured, the reinforcing effect will be maximized.
It can be said that reinforcement with such a structure is most desirable.

However, the above-mentioned conventional techniques have been limited to the proposal of reinforcing the warp and the production of the joint loop by the reinforcing warp, and the proposal of how to design all of the reinforcing warp with the reinforcing weft. Not done at all.

The present invention clarifies the range in which all of the reinforcing warp can be designed into the reinforcing weft in relation to the reinforcing ratio of the warp and the weft, and thus provides an effective weave of the reinforcing warp and the weft. With the goal. Another object of the present invention is to provide a method for producing a joint loop by a reinforcing warp while maintaining an effective weave of the reinforcing warp and the reinforcing weft.

[0069]

[Means for Solving the Problems] As mentioned above,
Although 3-78098 describes that the joining loop is made of a reinforcing warp, there is no specific suggestion as to how the reinforcing warp should be organized with the reinforcing weft.

Therefore, assuming that the joining loop is made of the reinforcing warp, all the reinforcing wefts are structured as the reinforcing warp,
In order to maximize the reinforcing effect, we examined what kind of structure is most effective from the viewpoint of both the method of creating the joint loop for the joint and the structure of the canvas body. I went. As a result of this examination, the present invention has been reached.

The first invention comprises a part of N warps forming a weaving unit of a warp yarn of a papermaking dryer canvas and a weaving unit of a weft yarn on the front surface side and / or the back surface side of the papermaking dryer canvas. Part or all of the M wefts that make up the
Replaced with a specific monofilament excellent in heat resistance, abrasion resistance, chemical resistance, strength and the like, and for all wefts of the specific monofilaments in the M wefts, all of the specific monofilaments in the N warps. The second invention is that the warp yarns are entangled (structured), and a joint loop at a canvas end portion is formed by the specific monofilament in the N warp yarns in the papermaking dryer canvas. 3rd invention is the said 1st and 2nd
Using the dryer canvas for papermaking of the invention as a base fabric, a web was laminated on one or both sides of the base fabric and needling was performed.

Here, the "specific monofilament" is a reinforcing yarn having excellent properties such as heat resistance, abrasion resistance, chemical resistance and tenacity. In the following embodiments, the "specific monofilament" is referred to as "specific monofilament". Reinforcement thread ".

[0073]

BEST MODE FOR CARRYING OUT THE INVENTION First, eight warp yarns 1 for a dryer canvas 20 having a structure as shown in FIG.
Let us consider a weft double weave design in which ~ 8 constitutes one repeat and the weft repeats in units of 8 as shown in ~. These eight warp yarns and weft yarns form a dryer canvas weaving unit.

As shown in FIG. 26, it is assumed that the warp yarns are sequentially woven from 1 to 2, 3, ... 8 and 8 laps are made one repeat, and woven repeatedly in this order. The design of FIG. 26 differs from the conventional design of FIG. 1 in that the weaving order of the warp yarns 1 to 8 is different.

A reinforcing yarn was used for the warp yarn and the weft yarn having the design shown in FIG. 26, and the reinforcement ratio was changed in the same manner as described in the above-mentioned prior art, and the examination was conducted for each reinforcement ratio.

I. Weft Reinforcement Ratio 25 (%) As shown in FIG. 27, a case will be described in which two or all of the weft yarns are reinforced, that is, the weft reinforcement ratio is set to 25 (%). Below, the reinforcement ratio of the warp is 25
(%), 50 (%), 75 (%), and 100 (%) will be described separately.

(1) When the warp reinforcement ratio is 25 (%): The warp and weft reinforcements in this case are as shown in FIG. The warp is reinforced with respect to two of the eight repeats (25 (%) reinforcement).

Comparing FIG. 27 with FIG. 1 having the same reinforcement rate for the warp and the weft described in the prior art,
It can be seen that the weaving order of eight 1 repeat repeats of warp is different, and the warp to be reinforced is different. That is, in FIG. 1, the reinforcing warps are and, while in FIG. 27, they are and.

The joint portion 10 is shown in FIG. 29 (A).
As in (C), the reinforced warp and the joining loop 1 can be formed.

The organization of the body of the canvas 20 is shown in FIG.
It becomes like (A)-(H). As can be seen from the figure, the reinforced weft yarns and the reinforced weft yarns are all organized. Therefore, the effect of the reinforced yarn is maximized.

The joining loops 1 and 1 will be described in detail in FIG.
(A) and FIG. 29 (C), the reinforced warp,
As for the warp, each of which is created by the above, the warp extending from the main body side 20 is drawn out from between the tip wefts 21a and 21b, and then folded back from the tip 21b side to the tip weft 21a side to form the joining loop 1, The front end is folded back to the main body side 20 through the space between the front wefts 21a and 21b, and the main body side 20 is stitched.

FIG. 29C shows the reinforced warp yarn.
As shown in FIG. 4, the warp yarn extending from the main body side 20 is drawn out from between the front end wefts 21a and 21b, and then folded back from the front end 21a side to the front end weft 21b side to form a joining loop 1, and the front end of the warp is formed. The sheet is folded back to the main body side 20 through the space between 21a and 21b, and is stitched to the main body side 20.

When FIG. 29 is compared with FIG. 2 having the same reinforcement rate for the warp and the weft described in the prior art,
It can be seen that the manufacturing method of the joining loop 1 in the case of (A) of both figures is different.

(2) When the reinforcement rate of the warp is 50 (%) As in the above case, the reinforcement rate of the weft is 25 (%),
As shown in FIG. 30, reinforcement of the warp is carried out for 4 out of 1 to 8 of 1 repeat of the warp ,.
(%) Reinforcement will be considered.

When FIG. 30 is compared with FIG. 4 in the case where the warp and weft described in the above-mentioned prior art have the same reinforcement ratio, the weave order of one repeat of eight warps is different, and the warp to be reinforced is also different. I see that is different. That is, the warp to be reinforced in FIG. 4 is, whereas in FIG.

As shown in FIGS. 32A and 32C, the joining loop 1 can be made of a warp reinforcing yarn and the like.

In this case, the organization of the body of the canvas 20 is as shown in FIGS. 31 (A) to (H). FIG. 31 (A)
As can be seen from (H) to (H), the reinforced weft and all are woven with the reinforced warp and weft. Therefore, the effect of the reinforced yarn is maximized.

The joining loops 1, 1 will be described in detail in FIG.
As in (A) and (C), the warp yarns are reinforced respectively. With respect to the warp yarns, the warp yarns extending from the main body side 20 are pulled out from between the tip weft yarns 21a and 21b, and then from the tip weft yarns 21a side. The joining loop 1 is made by folding back to the weft 21b side, and the front end of the warp is folded back to the main body side 20 through the space between the tip wefts 21a and 21b, and is bound to the main body side 20.

FIG. 32C shows the reinforced warp yarn.
As shown in FIG.
After pulling out from between 1a and 21b, tip weft 21b
From the side to the tip weft 21a side to form the joining loop 1, the tip of the warp is folded back to the body side 20 through the space between the tip wefts 21a and 21b, and is bound to the body side 20.

When FIG. 32 is compared with FIG. 5 in the case where the warp and weft described in the above-mentioned prior art have the same reinforcement ratio, the method for producing the joining loop 1 in the case of (C) in both figures is I see something different.

(3) When the reinforcement ratio of the warp is 75 (%) As in the above case, the reinforcement ratio of the weft is 25 (%), and the reinforcement of the warp is as shown in FIG.
Consider the case where 6 out of 8 are reinforced (75 (%) reinforcement).

Comparing FIG. 33 with FIG. 7 in the case where the warp and weft described in the prior art have the same reinforcement ratio, the weaving order of one repeat of eight warps is different, and the warp to be reinforced is also different. I see that is different. That is, in FIG. 7, the warp to be reinforced is, whereas in FIG. The joining loops 1 and 1 are shown in FIG.
As shown in (C), each can be made of a warp reinforcing yarn.

In this case, the organization of the body of the canvas 20 is as shown in FIGS. 34 (A) to (H). FIG. 34 (A)
As can be seen from (H) to (H), the reinforced weft and all are woven with the reinforced warp. Therefore, the effect of the reinforced yarn is maximized.

The joining loops 1, 1 will be described in detail in FIG.
As shown in (A) and (C), the warps created by the reinforced warp and extended from the main body side 20 are pulled out from between the wefts 21a and 21b, and then from the tip weft 21a side to the tip weft 21b side. The loop 1 for joining is made by folding back and the front end of the warp is set to the front wefts 21a and 2a.
It is folded back to the main body side 20 through the space between 1b and is bound to the main body side 20.

Comparing FIG. 32 with FIG. 9 in the case where the warp and weft described in the prior art have the same reinforcement ratio, it can be seen that the method for producing the joining loop 1 is the same.

(4) When the reinforcement ratio of the warp is 100 (%) Similarly to the above, the reinforcement ratio of the weft is 25 (%) and the reinforcement of the warp is as shown in FIG.
Consider the case of reinforcing all (100 (%) reinforcement).

Comparing FIG. 36 with FIG. 11 in the case where the warp and weft described in the prior art have the same reinforcement ratio, it can be seen that the weaving order of one repeat of eight warps is different.

The joining loops 1 and 1 are shown in FIG.
As shown in (C), each can be made of a warp reinforcing yarn.

In this case, the organization of the body of the canvas 20 is as shown in FIGS. 37 (A) to (H). FIG. 37 (A)
As can be seen from (H) to (H), the reinforced weft and all are woven with the reinforced warp. Therefore, the effect of the reinforced yarn is maximized.

The joining loops 1, 1 will be described in detail in FIG.
(A) and (C), the warp yarns that are respectively created by the reinforced warp yarns and extend from the main body side 20,
After pulling out from between the tip wefts 21a and 21b,
The joining loop 1 is created by folding back from the tip weft 21a side to the tip weft 21b side, and the tip of the warp is made into the tip weft 21.
It is folded back to the main body side 20 through the space between a and 21b, and is bound to the main body side 20.

Comparing FIG. 38 with FIG. 12 in the case where the warp and weft described in the prior art have the same reinforcement ratio, it can be seen that the method for producing the joining loop 1 is the same.

II. Next, as shown in FIG. 39, four of the whole wefts, ~ ,, and are reinforced (50
(%) Reinforcement will be considered. Below, the reinforcement ratio of the warp is 25 (%), 50 (%), 75 (%), 100
(%) Will be explained separately for each case.

(1) When the warp reinforcement ratio is 25 (%) The reinforcement state of the warp and weft in this case is as shown in FIG. The warp is reinforced with respect to two of the eight repeats (25 (%) reinforcement).

The joint portion 10 is shown in FIG.
As in (D), the reinforced warp and the joining loop 1 can be created. The organization of the body of the canvas 20 is shown in FIG.
It becomes like (A)-(H).

In this case, the weft reinforcing yarn and
0 (E) and (B) are reinforced with warp yarns and yarns, but neither the reinforced weft yarn nor the reinforced warp yarns are formed.

Although the joining loop 1 can be made of a warp reinforcing yarn and the like, half of the reinforced weft yarn is not organized with the reinforced warp yarn on the main body side of the canvas 20.
It cannot be said that the reinforcing effect is fully exerted.

(2) When the reinforcement ratio of the warp is 50 (%) As in the above case, the reinforcement ratio of the weft is 50 (%),
As shown in FIG. 41, the warp is reinforced about 4 out of 1 to 8 of the warp 1 repeat 8 (50
(%) Reinforcement will be considered.

Comparing FIG. 41 with FIG. 14 in the case where the warp and weft described in the prior art have the same reinforcement ratio, the weaving order of one repeat of eight warps is different,
You can see that the warp to be reinforced is different. That is, in FIG. 14, the reinforcing warp is, whereas in FIG.

The joining loop 1 is shown in FIGS. 32 (A) to (D).
As shown in FIG.

In this case, the organization of the body of the canvas 20 is as shown in FIGS. 42 (A) to (H). FIG. 42 (A)
As can be seen from (H) to (H), the reinforced weft yarns and the reinforced weft yarns are all organized with the reinforced warp yarns. Therefore, the effect of the reinforced yarn can be maximized.

The joining loops 1, 1 will be described in detail in FIG.
As in (A) and (C), the warp yarns are reinforced respectively. With respect to the warp yarns, the warp yarns extending from the main body side 20 are pulled out from between the tip weft yarns 21a and 21b, and then from the tip weft yarns 21a side. The joining loop 1 is made by folding back to the weft 21b side, and the front end of the warp is folded back to the main body side 20 through the space between the tip wefts 21a and 21b, and is bound to the main body side 20.

FIG. 32C shows the reinforced warp yarn.
As shown in FIG.
After pulling out from between 1a and 21b, tip weft 21b
From the side to the tip weft 21a side to form the joining loop 1, the tip of the warp is folded back to the body side 20 through the space between the tip wefts 21a and 21b, and is bound to the body side 20.

When FIG. 32 is compared with FIG. 5 in the case where the warp and weft described in the above-mentioned prior art have the same reinforcement ratio, the method for producing the joining loop 1 in the case of (C) of both figures is I see something different.

(3) When the reinforcement ratio of the warp is 75 (%) As in the above case, the reinforcement ratio of the weft is 50 (%) and the reinforcement of the warp is as shown in FIG. Reinforced about 6 out of 1 to 8 (75
(%) Reinforcement will be considered.

When FIG. 43 is compared with FIG. 16 in the case where the warp and weft described in the prior art have the same reinforcement ratio, the weaving order of one repeat of eight warps is different,
You can see that the warp to be reinforced is different. That is, in FIG. 16, the warp to be reinforced is, whereas in FIG.

The joining loop 1 is shown in FIGS. 35 (A) to (D).
As shown in FIG.

In this case, the organization of the body of the canvas 20 is as shown in FIGS. 44 (A) to (H). FIG. 44 (A)
As can be seen from (H) to (H), the reinforced weft and the weft are all structured with the reinforced warp. Therefore, the effect of the reinforced yarn can be maximized.

The joining loops 1, 1 will be described in detail in FIG.
As shown in (A) and (C), after the warp yarns, which are respectively created by the warp yarns and extend from the main body side 20, are drawn out from between the front end weft yarns 21a and 21b, the front weft yarns 2
Loop 1 for joining by folding back from the side 1a to the tip weft 21b side
And make the front end of the warp yarn end weft yarns 21a and 21b.
The sheet is folded back to the main body side 20 through the space and is bound to the main body side 20.

Comparing FIG. 35 with FIG. 9 in the case where the warp and weft described in the prior art have the same reinforcement ratio, it can be seen that the method for producing the joining loop 1 is the same.

(4) When the warp reinforcement ratio is 100 (%) As in the above case, the weft reinforcement ratio is 50 (%), and the warp reinforcement is as shown in FIG.
Consider the case of reinforcing all (100 (%) reinforcement).

Comparing FIG. 45 with FIG. 18 in the case where the warp and weft described in the prior art have the same reinforcement ratio, it can be seen that the weaving order of one repeat of eight warps is different.

The joining loop 1 is shown in FIGS. 38 (A) to (D).
As shown in FIG.

In this case, the organization of the body of the canvas 20 is as shown in FIGS. 46 (A) to (H). As can be seen from the figure, the reinforced weft yarn and the reinforced weft yarn are all organized with the reinforced warp yarn. Therefore, the effect of the reinforced yarn is maximized.

The joining loops 1, 1 will be described in detail in FIG.
As shown in (A) and (C), the warp yarns respectively made of the reinforced warp yarns and extended from the main body side 20 are drawn out from between the tip weft yarns 21a and 21b, and then from the tip weft yarn 21a side to the tip weft yarn 21b side. To form a joining loop 1, and the tip of the warp is folded back to the main body side 20 through the space between the front wefts 21a and 21b.
Spell to 0.

Comparing FIG. 38 with FIG. 12 in the case where the warp and weft described in the prior art have the same reinforcement ratio, it can be seen that the method for producing the joining loop 1 is the same.

III. Next, as shown in FIG. 47, a case where 6 out of the whole wefts to ,,, and are reinforced (reinforcement ratio 75 (%)) will be examined. Below, the reinforcement ratio of the warp is 25 (%), 50 (%), 75 (%), 1
Description will be made separately for each case of 00 (%).

(1) Case of Warp Reinforcement Ratio 25 (%) In this case, the warp and weft reinforcement states are as shown in FIG. The warp is reinforced with respect to two of the eight repeats (25 (%) reinforcement). For the joint part 10,
As shown in FIGS. 29 (A) and 29 (C), the joining loop 1 can be created with the reinforced warp yarns. The organization on the main body side of the canvas 20 is as shown in FIGS.

In this case, the reinforcing yarns and the weft yarns are organized by the reinforced warp yarns and the reinforced weft yarns as shown in FIGS. 48 (E) and 48 (B). It is not organized with the warp.

Although the joining loop 1 can be made of warp reinforcing yarns and 2/3 of the wefts reinforced on the main body side of the canvas 20 are not structured with the reinforced warp yarns, the reinforcing effect is sufficiently exerted. It cannot be said that it is done.

(2) When the reinforcement ratio of the warp is 50 (%) As in the above case, the reinforcement ratio of the weft is 75 (%),
As shown in FIG. 49, the warp was reinforced about 4 out of 1 to 8 of 1 repeat of the warp (...) (50 (%) reinforcement).

Comparing FIG. 49 with FIG. 20 in the case where the warp and weft described in the above-mentioned prior art have the same reinforcement ratio, it can be seen that the weaving order of one repeat of eight warps is different.
You can see that the warp to be reinforced is different. That is, in FIG. 20, the warp to be reinforced is, whereas in FIG.

As shown in FIGS. 32A and 32C, the joining loop 1 can be made of a warp reinforcing yarn and the like.

In this case, the organization on the main body side of the canvas 20 is as shown in FIGS. FIG. 50 (A)
As can be seen from (H) to (H), the reinforced weft yarns and the reinforced weft yarns are all organized with the reinforced warp yarns. Therefore, the effect of the reinforced yarn can be maximized.

The joining loops 1 and 1 will be described in detail in FIG.
As in (A) and (C), each of the warps is reinforced, and the warp extending from the main body side 20 is pulled out from between the front wefts 21a and 21b, and then from the front weft 21a side. 21b is folded back to form the joining loop 1, the tip of the warp is folded back to the main body side 20 through the space between the tip wefts 21a and 21b,
It is bound in the body side 20.

FIG. 32C shows the reinforced warp yarn.
As shown in FIG.
After pulling out from between 1a and 21b, tip weft 21b
From the side to the tip weft 21a side to form the joining loop 1, the tip of the warp is folded back to the body side 20 through the space between the tip wefts 21a and 21b, and is bound to the body side 20.

When FIG. 32 is compared with FIG. 5 in the case where the warp and weft described in the above-mentioned conventional technique have the same reinforcement ratio, the method for producing the joining loop 1 in the case of (C) in both figures is I see something different.

(3) When the reinforcement ratio of the warp is 75 (%) As in the above case, the reinforcement ratio of the weft is 75 (%),
As shown in FIG. 51, the reinforcement of the warp is reinforced with respect to 6 out of 1 to 8 of 1 repeat of the warp (75
(%) Reinforcement will be considered.

Comparing FIG. 51 with FIG. 22 in the case where the warp and weft described in the above-mentioned prior art have the same reinforcement ratio, it can be seen that the weaving order of one repeat of eight warps is different.
You can see that the warp to be reinforced is different. In FIG. 22, the warp to be reinforced is, whereas in FIG.

As shown in FIGS. 35 (A) and 35 (C), the joining loop 1 can be made of a warp reinforcing yarn and.

In this case, the organization of the body of the canvas 20 is as shown in FIGS. 52 (A) to (H). FIG. 52 (A)
As can be seen from (H) to (H), the reinforced weft yarn and the reinforced weft yarn are all structured with the reinforced warp yarn. Therefore, the effect of the reinforced yarn can be maximized.

The joining loops 1 and 1 will be described in detail in FIG.
As shown in (A) and (C), the warp yarns each made of a reinforced warp yarn and extended from the main body side 20 are drawn out from between the tip weft yarns 21a and 21b, and then from the tip weft yarn 21a side to the tip weft yarn 21b side. The loop 1 for joining is created by folding back and the tip of the warp is folded back to the body side 20 through the space between the tip wefts 21a and 21b.
Spell in

Comparing FIG. 35 with FIG. 9 in the case where the warp and weft described in the prior art have the same reinforcement ratio, it can be seen that the method for producing the joining loop 1 is the same.

(4) When the warp reinforcement ratio is 100 (%) Similarly to the above, the weft reinforcement ratio is 75 (%), and the warp reinforcement is as shown in FIG.
Consider the case of reinforcing all (100 (%) reinforcement).

Comparing FIG. 53 with FIG. 24 in the case where the warp and weft described in the prior art have the same reinforcement ratio, it can be seen that the weaving order of one repeat of eight warps is different.

As shown in FIGS. 38 (A) and 38 (C), the joining loop 1 can be made of a warp reinforcing yarn.

In this case, the organization on the main body side of the canvas 20 is as shown in FIGS. 54 (A) to (H). FIG. 54 (A)
As can be seen from (H) to (H), the reinforced weft and all are woven with the reinforced warp. Therefore, the effect of the reinforced yarn can be maximized.

In this case, as shown in FIGS. 38 (A) and 38 (C), the joining loop 1 is made of reinforced warp threads. That is, after the warp extending from the main body side 20 is pulled out from between the tip wefts 21a and 21b, it is folded back from the tip weft 21a side to the tip weft 21b side to form the joining loop 1, and the tip of the warp is made into the tip weft 21a. And 2
It is folded back to the main body side 20 through the space between 1b and is bound to the main body side 20.

Comparing FIG. 38 with FIG. 12 in the case where the warp and weft described in the prior art have the same reinforcement ratio, it can be seen that the method for producing the joining loop 1 is the same.

IV. Next, as shown in FIG.
Consider the case where all are reinforced (reinforcement rate 100
(%)). Below, the reinforcement ratio of the warp is 25 (%), 50
(%) And 75 (%) will be described separately.

(1) When the warp reinforcement ratio is 25 (%): The warp and weft reinforcements in this case are as shown in FIG. The warp is reinforced with respect to two of the eight repeats (reinforcement rate 25 (%)).

As shown in FIGS. 29 (A) and 29 (C), the joint portion 10 can be formed with the reinforced warp and the joining loop 1.

The organization of the body of the canvas 20 is shown in FIG.
It becomes like (A)-(H).

In this case, the weft reinforcing yarn and the weft yarn are structured by the reinforced warp yarn and the reinforced weft yarn as shown in FIGS. 56 (B) and 56 (E), but the reinforced weft yarn and the reinforced yarn are reinforced. It is not organized with any warp.

The joining loop 1 can be made of a warp reinforcing yarn and, but on the main body side of the canvas 20, half of the reinforced weft yarn is not structured with the reinforced warp yarn, so that the reinforcing effect is sufficiently exerted. It cannot be said that it is done.

(2) When the reinforcement ratio of the warp is 50 (%) As in the above case, the reinforcement ratio of the weft is 100 (%) and the reinforcement of the warp is as shown in FIG. Consider the case where 4 out of 1 to 8 are reinforced (50 (%) reinforcement).

As shown in FIGS. 32 (A) and 32 (C), the joining loop 1 can be made of warp reinforcing yarns.

In this case, the organization on the body side of the canvas 20 is as shown in FIGS. 58 (A) to (H). Figure 58 (A)
As can be seen from ~ (H), the reinforced wefts ~ are all designed with reinforced warp yarns. Therefore, the effect of the reinforced yarn is maximized.

The joining loops 1, 1 will be described in detail in FIG.
As in (A) and (C), the warp is reinforced, and with respect to the warp, the warp extending from the main body side 20 is drawn out from between the tip wefts 21a and 21b, and then from the tip weft 21a side. 21b to form a joining loop 1 and the warp end is set to the end weft 21
It is folded back to the main body side 20 through the space between a and 21b, and is bound to the main body side 20.

FIG. 32C shows the reinforced warp yarn.
As shown in FIG. 5, after pulling out the warp extending from the main body side 20 from between the tip wefts 21a and 21b, the tip weft 2
Loop 1 for folding back from the 1b side to the tip weft 21a side
Then, the front end of the warp is folded back to the main body side 20 through the space between the front end wefts 21a and 21b, and is bound to the main body side 20.

(3) When the reinforcement rate of the warp is 75 (%) As in the above case, the reinforcement rate of the weft is 75 (%),
As shown in FIG. 59, the reinforcement of the warp is performed for 6 out of 1 to 8 of 1 repeat of the warp (75
(%) Reinforcement will be considered.

As shown in FIGS. 35 (A) and 35 (C), the joining loop 1 can be made of a warp reinforcing yarn and.

In this case, the organization of the body of the canvas 20 is as shown in FIGS. 60 (A) to (H). FIG. 60 (A)
As can be seen from ~ (H), the reinforced wefts ~ are all structured with the reinforced warps. Therefore, the effect of the reinforced yarn is maximized.

The joining loops 1 and 1 will be described in detail in FIG.
As shown in (A) and (C), the warp yarns created by the warp yarns and extended from the main body side 20 are the front weft yarns 21a
And 21b, and then folded back from the tip weft 21a side to the tip weft 21b side to form the joining loop 1, and the tip of the warp is folded back to the main body side 20 through the gap between the tip wefts 21a and 21b. Spell in

The results of the above examination can be summarized as shown in Table 2. In the table, ◯ indicates that all of the reinforced wefts were designed with all of the reinforced warps, and X indicates that only part of the reinforced wefts was designed with the reinforced warps or no design at all.

[0165]

[Table 2]

As can be seen from these results, when all of the reinforced wefts are designed with all of the reinforced warps and the reinforcing effect is sufficiently exerted, the weft reinforcement ratio is 25 (%). Reinforcement rate is 25
In the case of (%) It can be seen that the reinforcement ratio of the warp exceeds 50 (%).

From the above, if the above-mentioned reinforcement is carried out under the above-mentioned predetermined woven structure, the reinforcement effect can be sufficiently exhibited.

The present invention is not limited to the double weave described in the embodiments, and can be a multi-layer weave of triple or more weaves.

For example, in the weft triple weave shown in FIG. 72, a part of the warp yarns 1 to 8 and all or part of the front weft yarn 51 and the back weft yarn 53 are reinforced, and / or all of the middle layer weft yarns 52 or Partial reinforcement and interlacing of reinforcing threads (structure)
It is possible to

In the above embodiment, eight warps and wefts 8 are used.
Although a book is used as a weaving unit, the number of warp threads and weft threads constituting the weaving unit varies depending on the woven structure of the dryer canvas.

[0171]

As described above, the present invention clarifies the range in which all of the reinforcing warps and the structure (entanglement) can be entangled with the reinforcing wefts in relation to the reinforcing ratio of the warp and the weft. Effective weaving is possible, and since a joint loop can be created with reinforcing warps while maintaining such an effective weave for the joint as well, it is possible to reinforce the dryer canvas body and the joint loop. By making them compatible, the life of the entire dryer canvas can be extended.

[Brief description of drawings]

FIG. 1 is a structural diagram of a conventional dryer canvas body (inappropriate example, 25% warp and 25% weft reinforcement).

2 (A) to (D) are organization charts of a dryer canvas joint portion (25% warp reinforcement).

3 (A) to (H) are structural diagrams of each weft of FIG. 1 and a weft (unsuitable example).

FIG. 4 is an organization chart of the dryer canvas main body (warp 50
%, Weft 25% reinforcement).

5 (A) to (D) are structural diagrams of the dryer canvas joint portion of FIG. 4 (50% warp reinforcement).

6 (A) to 6 (H) are structural diagrams of each weft of FIG. 4 and a weft (unsuitable example).

FIG. 7 is an organization chart of the dryer canvas body (warp 75
%, Weft 25% reinforcement).

FIG. 8 is a structural diagram of a warp loop joint.

9 (A) to (D) are organization charts of a dryer canvas joint portion (75% warp reinforcement).

10 (A) to 10 (H) are structural diagrams of each weft of FIG. 7 and a weft (unsuitable example).

FIG. 11 is an organization chart of the dryer canvas body (warp 1
00%, weft 25% reinforcement).

FIGS. 12A to 12D are structural diagrams of a dryer canvas joint portion (100% warp reinforcement).

13 (A) to 13 (H) are structural diagrams of the wefts of each warp of FIG. 11 (compatibility example).

FIG. 14 is a structural diagram of a dryer canvas body (inappropriate example, warp yarn 50%, weft yarn 50% reinforcement).

15 (A) to 15 (H) are structural diagrams (unsuitable examples) with the weft of each warp of FIG. 14.

FIG. 16 is a structural diagram of the dryer canvas main body (inappropriate example, 75% warp and 50% weft reinforcement).

17 (A) to (H) are structural diagrams (unsuitable examples) with the weft of each warp of FIG. 16.

FIG. 18 is a structural diagram of the dryer canvas body (inappropriate example, 100% warp and 50% weft reinforcement).

19 (A) to (H) are structural diagrams of each weft of FIG. 18 and a weft (unsuitable example).

FIG. 20 is a structural diagram of the dryer canvas main body (inappropriate example, 50% warp and 75% weft reinforcement).

21 (A) to 21 (H) are structural diagrams of each weft of FIG. 20 and a weft (unsuitable example).

FIG. 22 is a structural diagram of the dryer canvas main body (inappropriate example, 75% warp and 75% weft reinforcement).

23 (A) to (H) are structural diagrams (unsuitable examples) of the warp yarns of each warp yarn of FIG. 22.

FIG. 24 is an organization chart of the dryer canvas body (warp 1
00%, weft 75% reinforcement).

25 (A) to 25 (H) are structural diagrams of the wefts of each warp of FIG. 24 (compatibility example).

FIG. 26 is a basic organization chart of the dryer canvas main body of the present invention.

FIG. 27 is a structural diagram of the dryer canvas body of the present invention (25% warp and 25% weft reinforcement).

28 (A) to (H) are structural diagrams of the wefts of each warp in FIG. 27 (compatibility example).

29 (A) to (D) are organization charts of a dryer canvas joint portion (25% warp reinforcement).

FIG. 30 is a structural diagram of the dryer canvas body of the present invention (50% warp and 25% weft reinforcement).

31 (A) to 31 (H) are structural diagrams of the wefts of each warp of FIG. 30 (compatibility example).

32 (A) to (D) are organization charts of a dryer canvas joint portion (50% warp reinforcement).

FIG. 33 is a structural diagram of the dryer canvas body of the present invention (75% warp and 25% weft reinforcement).

34 (A) to (H) are organization charts of wefts for each warp of FIG. 33 (compatibility example).

35 (A) to (D) are organization charts of a dryer canvas joint portion (75% warp reinforcement).

FIG. 36 is a structural diagram of a dryer canvas body of the present invention (100% warp, 25% weft reinforcement).

37 (A) to (H) are organization charts of wefts for each warp of FIG. 36 (compatibility example).

38 (A) to (D) are organization charts of a dryer canvas joint portion (100% warp reinforcement).

FIG. 39 is a structural diagram of the dryer canvas main body (inappropriate example, 25% warp and 50% weft reinforcement).

40 (A) to (H) are structural diagrams (unsuitable example) of the wefts of each warp of FIG. 39.

FIG. 41 is a structural diagram of a dryer canvas body of the present invention (50% warp and 50% weft reinforcement).

42 (A) to (H) are structural diagrams of the wefts of each warp of FIG. 41 (compatibility example).

FIG. 43 is a structural diagram of the dryer canvas body of the present invention (75% warp and 50% weft reinforcement).

44 (A) to (H) are structural diagrams of the wefts of each warp of FIG. 43 (compatibility example).

FIG. 45 is a structural diagram of the dryer canvas body of the present invention (100% warp and 50% weft reinforcement).

46 (A) to (H) are structural diagrams of the weft of each warp of FIG. 45 (compatibility example).

FIG. 47 is a structural diagram of the dryer canvas main body of the present invention (inappropriate example, 25% warp and 75% weft reinforcement).

48 (A) to (H) are structural diagrams of each weft of FIG. 47 and a weft (unsuitable example).

FIG. 49 is a structural diagram of the dryer canvas body of the present invention (50% warp and 75% weft reinforcement).

50 (A) to (H) are structural diagrams of each warp in FIG. 49 and a weft (compatibility example).

FIG. 51 is a structural diagram of the dryer canvas body of the present invention (75% warp and 75% weft reinforcement).

52 (A) to (H) are organization charts of each warp in FIG. 51 and a weft (compatibility example).

FIG. 53 is a structural diagram of the dryer canvas body of the present invention (100% warp and 75% weft reinforcement).

54 (A) to (H) are organization charts of wefts for each warp of FIG. 53 (compatibility example).

FIG. 55 is a structural diagram of the dryer canvas main body (inappropriate example, 25% warp, 100% weft reinforcement).

56 (A) to (H) are structural diagrams of each weft of FIG. 55 and a weft (unsuitable example).

FIG. 57 is a structural diagram of the dryer canvas body of the present invention (50% warp, 100% weft reinforcement).

58 (A) to (H) are structural diagrams of the wefts of each warp of FIG. 57 (adaptation example).

FIG. 59 is a structural diagram of the dryer canvas main body of the present invention (75% warp, 100% weft reinforcement).

60 (A) to 60 (H) are structural diagrams of the wefts of each warp in FIG. 59 (adapted example).

FIG. 61 is a basic organization chart of a conventional dryer canvas body.

FIG. 62 is an organization chart of the dryer canvas body (warp 2
5%, weft 50% reinforcement).

63 (A) to (H) are conventional structural diagrams (unsuitable example) with the weft of each warp of FIG. 62.

FIG. 64 is a structural diagram of the dryer canvas body (inappropriate example, 25% warp and 75% weft reinforcement).

65 (A) to (H) are structural diagrams (unsuitable example) with the weft of each warp of FIG. 64.

FIG. 66 is a conventional structural diagram of the dryer canvas main body (unsuitable example, 25% warp, 100% weft reinforcement).

67 (A) to (H) are structural diagrams (unsuitable example) of the weft yarns of each warp yarn of FIG. 66.

FIG. 68 is a structural diagram of the dryer canvas body (inappropriate example, warp yarn 50%, weft yarn 100% reinforcement).

69 (A) to (H) are structural diagrams (unsuitable example) of each warp of FIG. 68 and a weft.

FIG. 70 is a structural diagram of the dryer canvas body (inappropriate example, 75% warp, 100% weft reinforcement).

71 (A) to (H) are structural diagrams of each weft of FIG. 70 and a weft (unsuitable example).

FIG. 72 is a structural diagram of a weft triple weave dryer canvas body showing a modified example of the present invention.

Claims (3)

[Claims] 1. A part of N warp yarns constituting a warp yarn constituting unit of a papermaking dryer canvas, and M constituting a weft yarn forming unit of a front side and / or a back side of the papermaking dryer canvas. Part or all of the wefts of the book are replaced with specific monofilaments excellent in heat resistance, abrasion resistance, chemical resistance, strength, etc., and all the wefts of the specific monofilaments in the M wefts are A dryer canvas for papermaking, wherein all warps of a specific monofilament among N warps are entangled. 2. The dryer canvas for papermaking according to claim 1, wherein the specific monofilament in the N warps forms a joint loop at the end of the canvas. 3. A needle canvas for papermaking, wherein the dryer canvas for papermaking according to claim 1 or 2 is used as a base cloth and a web is laminated on one or both sides of the base cloth and needling.