JP4383040B2 - Corrugator belt - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a corrugator belt which is attached to a corrugator for producing corrugated cardboard sheets and is mainly used for conveying corrugated cardboard sheets after being bonded together.
[0002]
[Prior art]
A corrugator belt is used as a means for drying a cardboard sheet while transporting the cardboard sheet in a corrugator that applies an adhesive to a single-sided cardboard paper, laminates a liner paper on the coated surface, and presses and adheres to produce a corrugated cardboard sheet. . Conventionally, cotton belts having a multi-woven structure and needle belts having a laminated structure have been used for the corrugator belt, but various materials have been proposed as constituent materials of the belt according to required characteristics.
[0003]
For example, in Patent Document 1, in order to dry a corrugated cardboard sheet sandwiched between a hot hot plate and a corrugator belt and transported, a multi-weave structure is formed by using constituent yarns in which polyester fibers are arranged around cotton fibers. A corrugator belt formed and imparted with heat resistance and hygroscopicity is disclosed.
[0004]
Patent Document 2 discloses that a polytetrafluoroethylene fiber yarn is disposed on a surface layer in contact with a corrugated cardboard sheet, and the polytetrafluoroethylene fiber yarn layer is formed of a low elongation material such as aromatic polyamide, polyimide, or polyetherketone. A conveyor belt imparted with heat resistance and durability by forming a woven structure reinforced with a high degree of heat resistant reinforcing yarn is disclosed.
[0005]
Further, in Patent Document 3, in a woven belt having a multi-woven structure, the warp of the surface layer, the both ends (edges) in the width direction are aromatic polyamide fibers, and the central part is a mixture of polyester and viscose. A structure in which heat resistance and wear resistance are imparted to the both end portions by forming the fiber is disclosed.
[0006]
[Patent Document 1]
JP 58-70733 A [Patent Document 2]
JP 62-79112 A [Patent Document 3]
Japanese Patent No. 3188469 [0007]
[Problems to be solved by the invention]
The corrugator belt is pressed with a pressure member from the back side of the belt so that the single-sided corrugated paper coated with adhesive and the liner paper are well bonded, and the corrugated cardboard sheet is pressed appropriately. Yes. On the other hand, in order to increase the manufacturing efficiency of the corrugated cardboard sheet, the corrugator belt that transports the corrugated cardboard sheet in the corrugator has a higher rotational speed. Therefore, it is necessary to bring a plate-like pressure member having a predetermined length in the moving direction into strong contact with the belt, and due to friction with the pressure member, the back surface of the belt reaches an unprecedented high temperature and wears. Has a problem of shortening the service life.
[0008]
In particular, in the connecting portion that connects the end portions in the length direction of the corrugator belt, there is a problem that the metal fitting that connects both end portions is severely worn and the connecting portion is easily damaged. In the connecting portion, a plurality of U-shaped metal fittings are attached to each end portion, both ends are brought together so that the metal fittings at both end portions are staggered, and a connecting rod is passed through the metal fitting and connected. At both ends, the metal fitting is attached by reducing the thickness of the belt by the thickness of the metal fitting so that the metal fitting and the pressure member do not come into strong contact with each other. However, as described above, when the belt is heavily worn, the metal fitting protrudes from the belt surface, and the pressure member strongly contacts the metal fitting and wears the metal fitting.
[0009]
The heat resistance and wear resistance of conventional corrugator belts are mainly considered only on the surface side in contact with the corrugated cardboard sheet, and the current situation is that studies on the heat resistance and wear resistance of the back surface are delayed.
[0010]
In view of the above problems, an object of the present invention is to provide a corrugator belt that improves the heat resistance and wear resistance of the back surface and exhibits high durability even in a corrugator using a pressure member.
[0011]
[Means for Solving the Problems]
The present invention relates to a corrugator belt having a multi-weave structure of at least two layers, wherein warp yarns forming at least a back layer are composed of plain yarns and reinforcing yarns arranged between the plain yarns in the width direction of the belt. And the position pattern of the warp with respect to the weft in the thickness direction of the belt of the back surface layer has n repeating units (n ≧ 2) that are continuous in the width direction of the belt, and n that the reinforcing yarn is continuous It is a corrugator belt characterized by being arranged in the belt as a set of x m (m ≧ 1) .
[0013]
In the present invention, polyester yarn or blended yarn containing polyester, cotton yarn or blended yarn containing cotton, rayon yarn or blended yarn containing rayon is preferably used as the normal yarn, and heat-resistant polyester or polyester is used as the reinforcing yarn. A yarn made of at least one of paraphenylene benzobisoxazole and aromatic polyamide, or a blended yarn containing at least one kind is preferably used.
[0014]
Furthermore, when the corrugator belt of the present invention is attached to the corrugator, it is preferable that reinforcing yarns are disposed at two or more locations in the width direction of the belt with respect to the pressing member in contact with the back layer of the belt.
[0015]
Furthermore, in the configuration in which the reinforcing yarn is arranged at a higher density in the belt ear than in the central portion, and in the surface layer, the warp yarn is arranged between the ordinary yarn and the ordinary yarn in the width direction of the belt. It is preferable that it is comprised by these.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The corrugator belt of the present invention has a multi-woven structure as a basic configuration. In such a multiple weave structure for the present invention, at least two layers of the surface layer and the backing layer as essential, it has one or more intermediate layers between them as necessary, each layer warps and the weft yarns respectively In addition, the layers are integrated by connecting yarns woven in the length direction.
[0017]
1 and 2 show the structure of a multi-woven structure preferably applied to the present invention. These drawings show the minimum necessary configuration in the longitudinal section of the belt. In the figure, 10 is a surface layer, 20 is an intermediate layer, 30 is the back surface layer, 11, 21 and 31 weft yarns, 12 a to 12 d, 22a, 22b, 32 a to 32 d is warp, 41a, 41b, 42a, 42b are connected It is a thread.
[0018]
In the configuration of FIG. 1, the surface layer 10 is composed of weft yarns 11 and warp yarns 12 a to 12 d, the position pattern of the warp for the weft yarn 11 in the thickness direction of the belt, the repeating units formed by four 12 a to 12 d It is composed. That is, in the thickness direction of each warp belts, after passing through the weft yarn 2 duty outside, two pins repeated pattern through an inner, each pattern Wei thread one warp 12a~12d in the longitudinal direction of the belt Since they are shifted by minutes, a set of repeating units is formed by four warps.
[0019]
Further, the intermediate layer 20 weft yarns 21 and warp yarns 22a, is constituted by 22b, in the thickness direction of the belt, and by repeating the pattern of the warp yarns 22a and 22b there is staggered position with respect to the weft yarns 21 to every one replaced in the intermediate layer 20, the repeating unit of the position pattern of the warp for the weft yarn 21 is two.
[0020]
Further, the back layer 30 is configured in the same manner as the intermediate layer 20, the surface layer 10 and the intermediate layer 20 are connected to each other by connecting yarns 41a and 41b, and the intermediate layer 20 and the back layer 30 are connected to each other by connecting yarns 42a and 42b. The front surface layer 10, the intermediate layer 20, and the back surface layer 30 are integrated.
[0021]
Arrangement of Figure 2 is a multi-woven tissue the same structure as the surface layer 10 to the back surface layer 30 in FIG. 1, the back surface layer 30, the repeating unit of the position pattern of the warp for the weft yarns 31 of 31 a to 31 d 4 It is a book.
[0022]
In the present invention, in a corrugator belt having a multi-weave structure as illustrated in FIGS. 1 and 2, the reinforcing yarn in which at least the warp forming the back layer is disposed between the ordinary yarn and the ordinary yarn in the width direction of the belt. It is composed of yarn. That is, the corrugator belt of the present invention is a belt in which the back layer is reinforced by partially replacing the normal yarn as the warp yarn of the back layer with the reinforcing yarn.
[0023]
In the present invention, the ordinary yarn means a yarn made of a material used in the conventional back layer, and the reinforcing yarn is a material having at least heat resistance and / or abrasion resistance than the ordinary yarn. The yarn is preferably made of a material which is equivalent to or superior to the ordinary yarn in other characteristics such as mechanical strength such as tensile strength.
[0024]
The normal yarn used in the present invention is preferably a polyester yarn, cotton yarn, rayon yarn, or a blended yarn containing at least one of polyester, cotton, rayon, which is used in a normal corrugator belt. In the present invention, since the back layer of the belt is reinforced by the reinforcing yarn, even a material having poor heat resistance and wear resistance can be used for the normal yarn. Particularly in recent years, polyester yarn is mainly used with an emphasis on wear resistance. However, by using cotton yarn or cotton blended yarn as normal yarn, the water absorption of the belt can be increased, and rayon yarn is also used. By using blended yarn of rayon or rayon, water absorption and water retention can be improved.
[0025]
Further, as the reinforcing yarn, a yarn made of heat-resistant polyester, polyparaphenylene benzobisoxazole (PBO) or aromatic polyamide, or a mixed yarn containing at least one of these is preferably used. Among these, PBO having high heat resistance and wear resistance is preferably used in the present invention.
[0026]
Moreover, both the normal yarn and the reinforcing yarn may be monofilament or multifilament.
[0027]
The heat-resistant polyester, PBO, and aromatic polyamide preferably used for the reinforcing yarn according to the present invention are more expensive than cotton and polyester used for ordinary yarn. Therefore, when the entire belt is configured using such a reinforcing yarn, the price of the belt is significantly increased. The present inventor has found that a reinforcing effect can be obtained even when a reinforcing yarn is partially used as the warp of the back layer, and has achieved the present invention, since the reinforcing yarn is not used for the entire back layer. , Increase in belt price can be suppressed. In addition, since the necessary heat resistance and wear resistance can be ensured by the reinforcing yarn, a material excellent in other characteristics such as water absorption is freely selected although it is inferior in heat resistance and wear resistance as a normal yarn. And the function of the entire belt can be enhanced.
[0028]
In the present invention, on but the arrangement position of the reinforcing threads in the warp of the back surface layer can be freely selected within a range in which the reinforcing effect is obtained, to obtain a high reinforcing effect in small number, first, for the weft yarns in the thickness direction of the belt When the repeating unit of the warp position pattern is formed of n pieces (n ≧ 2) continuous in the belt width direction, it is preferable that the repeating unit is composed of the nearest n reinforcing yarns. In the configuration of FIG. 1, there are two warp yarn repeating units constituting the back layer 30, so that the reinforcing yarns are arranged so that any two reinforcing yarns closest in the width direction of the belt constitute the repeating unit. do it. Further, in the configuration of FIG. 2, the number of repeating units is four, and therefore the nearest four reinforcing yarns may constitute the repeating unit.
[0029]
In this way, when the reinforcing yarns are arranged so that the nearest n reinforcing yarns constitute a repeating unit of the warp yarn, approximately the same number of reinforcing yarns are provided to the belt for each of the n warp yarns constituting the repeating unit. The reinforcing yarn is exposed in any one of the belt width directions at any position in the belt length direction, and the reinforcing yarns are evenly arranged in the belt length direction.
[0030]
Further, by continuously arranging the n reinforcing yarns constituting the repeating unit, a substantially linear reinforcing portion is formed in the belt, and a higher reinforcing effect can be obtained.
[0031]
3 and 4 show examples of reinforcement of the back layer in the structure of FIG. 1, and FIGS. 5 and 6 show examples of reinforcement of the back layer in the structure of FIG. In Figures 3-6, the paper vertically width direction of the belt, the lateral direction is the length direction of the belt, only the warp and weft yarns of the relationship between the back surface layer, connecting yarn for convenience, be omitted. In the figure, reference numerals 51a to 51h denote repetitive units of warps, and reinforcing yarns are indicated by hatching.
[0032]
3 and 4, each of the repeating units 51a to 51h is composed of warps 32a and 32b, and two reinforcing yarns are used for four ordinary yarns. In FIG. 3, in the repeating units 51a to 51c, the warp 32a of 51a and the warp 32b of 51b are used as reinforcing yarns, and the other warps are ordinary yarns. Accordingly, one reinforcing yarn is arranged every two ordinary yarns within the three units. When the two closest reinforcing yarns are taken out, the warp yarns 32a and 32b are combined to form a repeating unit. Yes.
[0033]
In FIG. 3, the number of normal yarns arranged between the reinforcing yarns is constant every two yarns, but the present invention is not limited to this, and the normal yarns interposed between the reinforcing yarns depending on the number of reinforcing yarns. The number can be appropriately selected within the belt.
[0034]
In FIG. 4, in the repeating units 51a to 51c, reinforcing yarns are arranged on the warp yarns 32a and 32b of 51a, and ordinary yarns are used for the remaining warp yarns. Accordingly, two reinforcing yarns are arranged every four ordinary yarns within the three units, and the repeating unit is constituted by two reinforcing yarns arranged in succession. Therefore, the reinforcing yarn exposed on the surface of the back surface layer becomes a substantially continuous straight line, and a high reinforcing effect is obtained.
[0035]
In the present invention, the number of reinforcing yarns that are continuously arranged is not limited to the number of repeating units, and if the number of warps constituting the repeating unit is n, n × m (M ≧ 1), and it is possible to select different m within the belt.
[0036]
Further, in FIG. 4, between the repeating units constituted by the reinforcing yarn, the repeating units constituted by the normal yarn are interposed in a fixed number by two units, but the present invention is not limited to this, The number of repeating units composed of ordinary yarns interposed between repeating units composed of reinforcing yarns can be appropriately selected within the belt.
[0037]
5 and 6, warp repeating units 51a to 51d are respectively composed of warps 32a to 32d, and two reinforcing yarns are used for four ordinary yarns as in FIGS. In the configuration of FIG. 5, in the repeating units 51a to 51c, the warp yarns 32a and 32b of 51a and the warp yarns 32c and 32d of 51b are used as reinforcing yarns, and the remaining warp yarns are used as ordinary yarns. Accordingly, two reinforcing yarns are arranged every four ordinary yarns within the three units, and when the closest reinforcing yarn is taken out, it becomes a combination of warp yarns 32a to 32d and constitutes a repeating unit.
[0038]
In FIG. 6, in the repeating units 51a to 51c, the warp yarns 32a to 32d of 51a are all composed of reinforcing yarns, and 51b and 51c are composed of ordinary yarns. Therefore, four reinforcing yarns are arranged every eight regular yarns within the three units, and the repeating unit is constituted by four reinforcing yarns arranged in succession. Therefore, the reinforcing yarn exposed on the surface of the back surface layer becomes a substantially continuous straight line, and a high reinforcing effect is obtained.
[0039]
In the configuration of FIG. 5, the two reinforcing yarns are continuously arranged. However, the present invention is not limited to this, and may be arranged one by one as in FIG. The number of ordinary yarns interposed between the yarns is not limited to the same value as in FIG.
[0040]
Furthermore, in the configuration of FIG. 6, the number of reinforcing yarns continuously arranged is not limited to the number of repeating units, and n × m (m ≧ m) as in the description of FIG. 4. 1) and can be freely selected within the belt. Also, the number of ordinary yarns interposed between the reinforcing yarns can be selected as appropriate.
[0041]
In the present invention, the location and density of the reinforcing yarns may be selected according to the necessary degree of reinforcement in the belt width direction. Currently used pressure members that press the corrugator belt from the back side include those that cover the entire width in the belt width direction and those that are divided into multiple parts in the belt width direction. A reinforcing effect can be obtained if reinforcing yarns are arranged at least at two locations in the belt width direction of the pressure member. As a preferable application example, in a pressure member having a length in the belt width direction of 10 to 20 cm, there are two or more places in the belt width direction. In the case of a pressure member whose length in the belt width direction exceeds 20 cm, the number of reinforcing portions may be increased as appropriate according to the reinforcing effect.
[0042]
Further, the corrugator belt is particularly susceptible to damage to the ear portion, and therefore it is desirable that the arrangement density of the reinforcing yarn is higher in the ear portion than in the central portion.
[0043]
Furthermore, it is also possible to apply the structure of the back surface layer of this invention to a surface layer. In this case, the location and density of the reinforcing yarn are not affected by the configuration of the back surface layer, and the material of the reinforcing yarn and the normal yarn is also set according to the conditions of the surface layer. If there is no particular problem, the same material as the back layer can be used for the front layer. Further, the same ordinary yarn as that of the back layer may be used for the intermediate layer and the connecting yarn.
[0044]
【The invention's effect】
In the corrugator belt of the present invention, since the back surface layer is reinforced with the reinforcing yarn, deterioration of the belt due to contact with the pressure member and damage to the connecting portion are greatly suppressed, and the durability is dramatically improved. . Furthermore, since the reinforcing yarn is partially used in the back surface layer, an increase in the price of the belt due to the use of the reinforcing yarn is minimized. Therefore, by using the corrugator belt of the present invention, the user's economic burden is also reduced. Furthermore, since the material of the normal yarn can be freely selected, other characteristics can be improved without reducing heat resistance and wear resistance.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of a multi-woven structure that is a basic configuration of a corrugator belt of the present invention.
FIG. 2 is a view showing another example of a multi-woven structure that is a basic configuration of the corrugator belt of the present invention.
3 is a diagram showing an example of reinforcement of a back layer in the multi-woven structure shown in FIG. 1. FIG.
4 is a view showing another example of reinforcement of the back layer in the multi-woven structure shown in FIG. 1. FIG.
5 is a diagram showing an example of reinforcement of the back layer in the multiple weave structure shown in FIG. 2. FIG.
6 is a view showing another example of reinforcement of the back layer in the multi-woven structure shown in FIG.
[Explanation of symbols]
10 surface layer 20 intermediate layer 30 back layer 11, 21, 31 great yarn 12a-12d, 22a, 22b, 32a-32d warp yarn 41a, 41b, 42a, 42b connecting yarn 51a-51h repeating unit

Claims (8)

In the corrugator belt having a multi-weave structure of at least two layers, the warp forming at least the back surface layer is composed of a normal yarn and a reinforcing yarn disposed between the normal yarn in the width direction of the belt, and the back surface The position pattern of the warp with respect to the weft in the thickness direction of the belt of the layer has a repeating unit formed by n pieces (n ≧ 2) continuous in the width direction of the belt, and n × m pieces of reinforcing yarn are continuous ( A corrugator belt, wherein m ≧ 1) is disposed in the belt as a set . The corrugator belt according to claim 1, wherein the ordinary yarn is a polyester yarn or a blended yarn containing polyester. The corrugator belt according to claim 1 or 2 , wherein the ordinary yarn is cotton yarn or a blended yarn containing cotton. The corrugator belt according to claim 1 or 2 , wherein the ordinary yarn is rayon yarn or a blended yarn containing rayon. The corrugator according to any one of claims 1 to 4 , wherein the reinforcing yarn is a yarn comprising at least one of heat-resistant polyester, polyparaphenylenebenzobisoxazole, or aromatic polyamide, or a blended yarn containing at least one of them. belt. The reinforcing yarns according to any one of claims 1 to 5 , wherein, when the corrugator belt is attached to the corrugator, reinforcing yarns are arranged at two or more locations in the width direction of the belt with respect to the pressing member in contact with the back surface layer of the belt. Corrugator belt. The corrugator belt according to any one of claims 1 to 6 , wherein reinforcing yarns are arranged at a higher density in the ear portion of the belt than in the central portion. The corrugator belt according to any one of claims 1 to 7 , wherein the warp forming the surface layer is composed of a normal yarn and a reinforcing yarn disposed between the normal yarns in the width direction of the belt.

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