JP3916767B2 - Press net for building materials production - Google Patents

Description

【００２４】
【発明の効果】
本発明の建材製造用プレス網は、原料の洩れが少なく、歩留まりの良いプレスが行え、搾水性も良好である。
また、剛性が優れているため、抄造物にひびや割れを発生させることがない
また、耐シャワー性に優れており、高圧シャワー洗浄が可能で汚れを簡単に除去することができるため、生産速度を上げることができる。
さらに、耐摩耗性、耐ニップ性が優れており、厚さの減少も少ないため、長期間使用されても使用末期まで良好な搾水性を維持できる。
このような良好な剛性、洗浄性、搾水性、耐摩耗性を有する建材製造用プレス網を使用することにより、本発明の最終的な目的である建材の生産性向上を達成することができる。
【図面の簡単な説明】
【図１】本発明の建材製造用プレス網の一実施例を示す平面図である。
【図２】図１のＩ−Ｉ′線で切断した経糸に沿った断面図である。
【図３】本発明の建材製造用プレス網の一実施例を示す平面図である。
【図４】図３のＩＩ−ＩＩ′線で切断した経糸に沿った断面図である。
【図５】本発明の建材製造用プレス網の一実施例を示す平面図である。
【図６】図５のＩＩＩ−ＩＩＩ′線で切断した経糸に沿った断面図である。
【図７】本発明の建材製造用プレス網の他の実施例を示す経糸に沿った断面図である。
【図８】本発明の建材製造用プレス網の他の実施例を示す経糸に沿った断面図である。
【図９】本発明の建材製造用プレス網の他の実施例を示す緯糸に沿った断面図である。
【図１０】建材製造用装置のプレスパートを示す説明図である。
【図１１】建材製造用装置のプレスパートを示す説明図である。
【図１２】建材製造用装置のプレスパートを示す説明図である。
【図１３】建材製造用装置のプレスパートを示す説明図である。
【符号の説明】
１ 経糸
２ プレス面側緯糸
３ 中間層緯糸
４ 脱水面側緯糸
５ 経糸
６ プレス面側緯糸
７ 中間層緯糸
８ 中間層緯糸
９ 脱水面側緯糸
１０ プレス面側経糸
１１ 脱水面側経糸
１２ プレス面側緯糸
１３ 中間層緯糸
１４ 脱水面側緯糸
１５ プレス面側経糸
１６ 脱水面側経糸
１７ プレス面側緯糸
１８ 脱水面側緯糸
１９ 接結糸
２０ フェルト
２１ 金型
２２ サクションボックス
２３ 抄造物
２４ パンチングプレート[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a press net for manufacturing building materials such as slate and roof tile.
[0002]
[Prior art]
The manufacturing method of building materials such as slate and roof tiles is a well-known technique, and a paper-making part is used to make a slurry in which raw materials such as cement, pearlite, gypsum, slag, aggregates, organic fibers, inorganic fibers and asbestos are dissolved in water. Then, it is transported to a press part to carry out press watering, molding, die cutting and the like.
As the press part, (a) As shown in FIG. 10, a needle felt is put between rolls, a die is placed on the press surface side which is the upper side of the felt, and the dewatering side which is the lower side of the felt is sandwiched between the felts. Using a device provided with a suction box, a long net type method in which a paper product is supplied onto the felt, conveyed, pressed in a mold part and squeezed, and excess water is sucked in the suction box ( (B) As shown in FIG. 11, using a suction box with needle felt or woven net attached to the upper part, and a machine with the mold arranged so that it is moved and installed in the lower part, the paper is made on the mold. , Move the mold to the lower part of the suction box, press the squeeze box to squeeze out water and suck out excess water, (c) as shown in FIG. The upper suction box with needle felt and woven mesh attached to the upper suction box, and the lower suction box with needle felt and woven mesh attached so that it is moved and installed in the lower part of the box, the paper is made on the lower suction box. A method in which the lower suction box is moved to the lower part of the upper suction box and pressed by the upper suction box to squeeze water and suck out excess water, as shown in FIG. Using a machine equipped with a punching plate with needle felt or woven net attached to the upper side, a suction box on the lower part, and a caterpillar-like upper part in the middle, and a punched plate, Move and install between the mold and suction box, press the mold and squeeze the water A method of sucking in the suction box the excess moisture.
In the above-described method for building material press, conventionally, a so-called needle felt in which a bat of synthetic fiber is entangled by needling on the front and back surfaces of a base fabric woven with monofilaments or multifilaments is used. This is because the raw materials for building materials such as slate and roof tiles are different from paper raw materials and are mainly made of very fine powdery materials as described above. It is because it is difficult to manufacture the building material of the sheathing.
In addition, when a woven mesh is used, needle felt is used due to a problem that marks of the woven mesh are transferred to the product.
[0003]
[Problems to be solved by the invention]
In the press part of the building material manufacturing machine, the water is squeezed with felt as described above, and excess water from the papermaking is removed through the felt by a forced suction device such as a suction box.
Needle felt is finely formed by covering the front and back with a pad, so there is an advantage that the yield of the raw material is small and the yield is good. On the other hand, the pad is dense in the entire z-axis direction. There is a drawback that it is accumulated inside the felt and easily contaminated.
[0004]
In addition, the needle felt has poor elongation rigidity, bending rigidity, and poor dimensional and posture stability.
In the long mesh system, the building material has a very large paper basis weight and is heavy. Therefore, in order to run the press net on which the paper is placed well, it is necessary to apply a large tension to the press net to make a strong drive roll. It is necessary to transmit the power of
However, the needle felt has a low elongation rigidity and a large width shrinkage and a decrease in the thickness caused by the elongation. Therefore, a large tension cannot be applied and the needle felt cannot be run well. There is also a problem that slip occurs. When slipping occurs, wear on the running surface of the press net is promoted and the service life is shortened, and problems such as an increase in power load and machine stoppage occur, and this has a significant effect on productivity.
In addition, the needle felt cannot be stretched strongly and its bending rigidity is weak, so it cannot withstand the weight of the papermaking in the part where there is no support for the press net between the suction box and the transport roll. There was also a problem that the paper was bent and cracked or cracked.
In addition, as the needle felt is used, it is gradually compressed to reduce its thickness, and the water squeezing ability is accordingly reduced.
In addition, the needle felt bat is crushed according to the unevenness of the press die, and the die remains, and the former die is transferred from the felt to the product even after the die is changed. It was.
Further, when cutting a paper product with a long-net type press part, there is also a problem that the teeth of the cutter cut the bat fiber or the base fabric, and the perforation tends to occur.
[0005]
The present invention solves the above-mentioned drawbacks, and provides a press net for manufacturing a building material having a good yield and good rigidity, cleanability and dewaterability.
[0006]
[Means for Solving the Problems]
  The present invention
“1. A press network for building material production in which a paper-making building material is placed and conveyed, and pressed with a mold during conveyance, and squeezed.A plurality of layers of wefts are arranged, and the weft yarns on the press surface side are gathered together with small diameter yarns to form fine watering gaps between the yarns,The dewatering side is a monofilament or a yarn in which fine water-squeezing gaps are formed between monofilaments and small-diameter strands, and the warp is at least one selected from monofilaments, monofilament twisted yarns, and yarns whose core wires are monofilaments As a thread, SutraA single layer arrangement or multiple layers of yarn,A fine water-squeezing space is densely formed on the press surface side, andDehydrated surfaceOn the sideMainly using monofilamentTheNetwork structureIt is easy to go through the washing showerA press net for building materials, which is a belt made of a woven net having a three-dimensional space.
2. Multiple layers of warp yarns are arranged, and the dewatering surface side in contact with the suction box is at least one type selected from monofilament, monofilament twisted yarn and yarn whose core wire is monofilament, and the press surface side is monofilament, monofilament twisted yarn, core wire is monofilament The press net for building material production according to item 1, wherein at least one type of yarn selected from yarns in which fine water-squeezing gaps are formed between yarns in which yarns and small-diameter yarns are gathered is used.
3. Yarns with small diameter yarns gathered together to form fine water-squeezing gaps between the yarns, spanned yarns, multifilaments, raised yarns, monofilament twisted yarns, molding yarns, filament processed yarns, and spun yarns wound around monofilament core wires 3. The building material manufacturing press network according to item 1 or 2, which is a yarn selected from a yarn, a yarn obtained by winding a multifilament around a monofilament core wire, or a yarn obtained by co-twisting at least two of them..
4). 4. The building material manufacturing press network according to any one of claims 1 to 3, wherein the yarn whose core wire is a monofilament is a yarn obtained by winding a monofilament with a spun yarn or a multifilament.
5. 5. The building material manufacturing press network according to any one of items 1 to 4, wherein an intermediate weft layer made of a monofilament is disposed between the dewatered surface side weft layer and the press surface side weft layer.
6). Spun yarn, multifilament, raised yarn, monofilament twisted yarn, moor yarn, filament processed yarn, yarn with spanned yarn wound around monofilament core wire, multifilament on monofilament core wire between dewatered side weft layer and press side weft layer The press net for building material production according to any one of items 1 to 4, wherein an intermediate weft layer selected from yarns wound with filaments or yarns obtained by co-twisting at least two of them is disposed. .
7). Monofilament and spun yarn, multifilament, raised yarn, monofilament twisted yarn, moor yarn, filament processed yarn, monofilament yarn wound with span yarn between monofilament and weft layer 5. The building material according to any one of items 1 to 4, wherein an intermediate weft layer made of a yarn in which a multifilament is wound around a core wire and a yarn in which at least two of these are co-twisted is arranged. Production press network. "
About.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
In a press net for building material production, the water extraction space must be fine in order to obtain a good product with a low moisture content and no generation of marks. However, since the structure such as felt has the above-mentioned various problems, the present invention adopts a woven mesh structure that does not use a bat, and a thread having a fine water-squeezing space on the press surface side, such as a spun thread, a multifilament, Monofilament twisted yarn, moor yarn, filament processed yarn, yarn in which a span yarn is wound around a monofilament core wire, yarn in which a multifilament is wound around a monofilament core wire, or a yarn in which at least two of these are co-twisted are used. In order to improve the yield by densely forming a fine water-squeezing space on the press surface side to prevent leakage of raw materials from the slurry, the monofilament is mainly used on the dewatering surface side. By adopting a structure, it is possible to secure a three-dimensional space where it is easy to pass through a washing shower, improve the washing performance, and improve the rigidity. Than is the formation of the multi-functional fabrics that.
In order to secure a large dewatering space on the dewatering surface side and a three-dimensional space that is easy to pass through a washing shower, and to maintain the space well even if the dewatering surface side is worn, the wefts on the dewatering surface side have high rigidity and wear resistance. It is necessary to arrange a good monofilament.
Various kinds of yarn can be selected as described above for the yarn having a fine water-squeezing space. Particularly, as a yarn used for the press surface, a yarn obtained by co-twisting two or more types of yarn is used as a fiber binding force. Is strong and excellent in water squeezing.
[0008]
In addition, in this specification, the spun yarn means a short yarn made by converging short fibers, and is a spun yarn or the like. Multifilament is a fine filament made by converging fine filaments, raised yarn is a multifilament surface scratched with needles and fluffed, and filament processed yarn is filament yarn that can be stretched and bulked. It is a thread-like body that has been subjected to high processing, crimping processing, etc., and generally includes yarns called textured yarn, bulky yarn, stretch yarn, taslan processed yarn, and includes wooly nylon and the like. The molding yarn is a yarn formed by arranging short fibers radially around a core yarn such as a multifilament. Also included are those obtained by subjecting short fibers arranged radially to a crimping process or the like.
The press surface side is the side in contact with the product, and the dewatering surface side is the side in contact with the suction box. In the long net type, the dewatering surface side is the traveling surface side.
[0009]
Since the three-dimensional space of the dewatering surface becomes a large dewatering space when sucked by a suction box, the press net of the present invention has very good dewatering property despite little leakage of raw materials.
And this good dewaterability is because even if the dewatered surface is worn and the monofilament is scraped, the three-dimensional space is only slightly reduced and the flat space is not changed, so there is little decrease in dewaterability, until the end of use It can be maintained well. The effect is excellent in the case of the long net type.
In the case of felt, the structure is filled with fine synthetic fiber bats up to the back surface, and since there is no large dewatering space, the dewatering property is originally poor. Since the force is weak, the squeezed space is crushed and dirt is accumulated during that time, and the dewaterability is further reduced.
[0010]
In addition, since the dewatering surface has a monofilament network structure in the present invention, the elongation rigidity and bending rigidity as a woven fabric are extremely higher than that of a needle felt. It is possible to travel well by transmitting this force, and there is no problem that slip occurs.
Further, even in a portion where there is no support for the press net between the suction box and the transport roll, the product is sufficiently resistant to weight and does not bend, and there is no problem that the product is cracked or cracked.
In addition, a secondary effect that an apparatus such as an excessive stretcher or a draw-out roll is unnecessary is also obtained.
In addition, the thickness reduction during use is extremely small. As the needle felt is used, it is gradually compressed to reduce its thickness, and the water-squeezing ability decreases accordingly.However, since the present invention has high rigidity as a woven mesh, there is little decrease in thickness, and until the end of use. Good water extraction capacity can be maintained.
[0011]
Regarding the high pressure washing shower resistance, the yarn constituting the surface of the press net for manufacturing building materials of the present invention is an aggregate of fine fibers similar to a needle felt bat, but the whole has a woven net structure. For this reason, wefts are woven into warp yarns if they are weft yarns, and weft yarns are woven together in a short cycle and are strongly restrained, so that they are not cut or dropped by the impact of shower water. This high pressure shower resistance is also an effect obtained by making the press surface into a woven mesh structure.
Further, as described above, the present invention does not have a structure in which fine fibers are densely packed in the entire Z-axis direction as in the needle felt, but a fine fiber aggregate is formed only on the press surface. The structure is strongly constrained, so dirt is unlikely to accumulate. Moreover, it can be sufficiently washed by a low pressure shower that cannot clean the felt even if it becomes dirty.
[0012]
For the weaving structure, the yarn has a layer of warp monofilament, monofilament twisted yarn or core filament monofilament, and the weft is a yarn with a small squeezed gap formed between the strands by putting together small diameter strands on the press surface side. It is not particularly limited as long as it is formed in a multilayer in which monofilaments are mainly arranged on the dewatering surface side, and there are two types of warp single weft double, warp single weft triple, warp double weft triple, warp double weft double. Various structures such as a layer structure can be adopted.
A monofilament of warp, a monofilament twisted yarn or a yarn layer whose core is a monofilament plays a role of improving rigidity and dimensional stability, and a monofilament weft on the dewatered side plays a role of improving rigidity and wear resistance and securing a large three-dimensional space.
The material of the yarn is not particularly limited, and various materials such as synthetic fibers such as polyester, polyamide and polyphenylene sulfide, chemical fibers such as rayon, and natural fibers such as cotton can be used.
When the dewatered surface weft material is polyamide, wear resistance, nip resistance, and fibril resistance are good, and when polyester is used, rigidity increases. Therefore, polyester is used when rigidity is important. In consideration of the balance of both characteristics, for example, polyamide and polyester can be alternately arranged.
[0013]
When the warp yarn is made into two layers, the dewatering side can be a monofilament, and the press surface side can be a yarn in which a fine water-squeezing gap is formed between the yarns in which small-diameter strands are gathered. Monofilaments on the dewatered surface mainly improve rigidity and dimensional stability, and the press surface side is made by forming fine water-squeezing gaps between the yarns in which small diameter yarns are gathered. It is intended to improve the squeezing ability.
The same intermediate weft layer as the monofilament or the press surface can be disposed between the press surface side and the dewatering surface side of the weft, and the yield can be improved.
Depending on the conditions required for the intermediate layer, if you want to improve the rigidity, you can increase the rigidity by placing monofilaments, and if you want to improve the yield, use a small diameter strand similar to the press surface. A yarn in which fine water-squeezing gaps are formed between the bundled yarns is arranged. Alternatively, the intermediate performance can be obtained by alternately arranging monofilaments and small-diameter strands.
Also, on the dewatering side, if you want to further increase the water extraction efficiency and reduce the moisture content of the product, use a yarn that forms a fine dewatering gap between the monofilament and the yarn that combines the small-diameter strands. It can also be arranged.
[0014]
【Example】
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the invention will be described based on examples with reference to the drawings.
FIG. 1 is a plan view showing an embodiment of a press net for building material production according to the present invention, and FIG. 2 is a cross-sectional view along a warp line cut along line II ′ of FIG.
Ninety-five polyamide monofilaments with a diameter of 0.35 mm are arranged on the warp 1 and a yarn obtained by co-twisting a 540 denier polyamide raised yarn and an 800 denier polyamide multifilament wound yarn on the press surface side weft 2. 22 fibers per inch are arranged, 22 monopoly filaments having a diameter of 0.45 mm are arranged on the intermediate layer weft 3, and 1 inch of polyamide monofilaments and polyester monofilaments having a diameter of 0.40 mm are arranged on the weft 4 on the dewatering side. This is a press net for building material production of 8 shafts, warp, single weft and triple weave arranged 11 pieces per hit.
[0015]
FIG. 3 is a plan view showing an embodiment of a press net for manufacturing building materials according to the present invention, and FIG. 4 is a cross-sectional view taken along the line II-II ′ of FIG.
Made of polyester monofilament on the warp 1, polyamide spun yarn on the press side weft 2 and polyamide monofilament on the intermediate layer weft 3 and dewatered side weft 4, made of 8-shaft warp single weft triple woven building material It is an additional press net.
FIG. 5 is a plan view showing an embodiment of a press net for building material production according to the present invention, and FIG. 6 is a cross-sectional view seen from obliquely above along the warp cut along the line III-III ′ of FIG.
Polyamide molding yarn is arranged on the press surface side weft 2, polyester monofilament is arranged on the intermediate layer weft 3, polyamide monofilament twist yarn and polyamide filament are arranged alternately on the dewatering surface side weft 4, and ester polymonofilament and polyester are arranged on the warp 1. This is a press net for building material production of 8-shaft warp single weft triple weave in which monofilament twisted yarns are arranged in parallel in the same structure.
[0016]
FIG. 7 is a cross-sectional view along the warp showing another embodiment of the press net for manufacturing building materials of the present invention.
Polyester monofilament twist yarns for the warp yarn 5, polyamide spun yarn for the press surface side weft yarn 6, polyamide monofilament twist yarn intermediate layer weft yarn 7 and polyamide monofilament intermediate layer weft yarn 8 for the intermediate layer weft yarn alternately, dewatered surface side weft yarn 9 This is a press net for building material production of 8-shaft weft triple woven fabric in which polyamide monofilaments are arranged.
[0017]
FIG. 8 is a cross-sectional view along the warp showing another embodiment of the press net for building material production of the present invention. Polyamide multifilament is arranged on the press surface side warp 10, polyester monofilament on the dewatered surface side warp 11, polyamide multifilament on the press surface side weft 12, polyamide monofilament twist yarn on the intermediate layer weft 13, and polyamide monofilament on the dewatered surface side weft 14. It is a press net for building material production of 8-shaft warp double weft triple weave.
[0018]
FIG. 9 is a cross-sectional view taken along a weft showing another embodiment of the press net for manufacturing a building material of the present invention.
Polyester monofilament yarn wound around polyester surface monofilament core yarn on press surface side warp 15, polyester monofilament on dewatered surface side warp 16, Woolley nylon yarn on press surface side weft 17, polyamide monofilament on dewatered surface side weft 18 This is a press net for building material manufacturing of a two-layer fabric of an 8-shaft warp double weft double weave in which polyamide monofilaments are arranged as the yarn 19.
[0019]
10 to 13 are explanatory views showing the types of press parts of the building material manufacturing apparatus.
In FIG. 10, a needle felt 20 is placed between rolls, a die 21 is disposed on the press surface side that is the upper side of the felt, and a suction box 22 is disposed on the running surface side that is the lower side of the felt with the felt interposed therebetween. It is a long-mesh type device in which a paper product 23 is supplied and conveyed onto a felt, pressed with a mold in a mold part and squeezed, and excess water is sucked with a suction box.
FIG. 11 shows a suction box 22 having a needle felt 20 and a woven net attached to the upper part, and a mold 21 disposed so as to be moved and installed in the lower part. It is an apparatus used for a method in which a mold is moved and installed at the lower part of a suction box, pressed by the suction box and squeezed, and at the same time, excess water is sucked.
FIG. 12 shows an upper suction box 22 having needle felt 20 and a woven mesh attached to the upper portion, and a lower suction box 22 having needle felt and a woven mesh attached thereto so as to be sequentially moved to the lower portion thereof. It is an apparatus used for a method in which the paper product 23 is supplied onto the suction box, the lower suction box is moved to the lower part of the upper suction box, and the upper suction box is pressed to squeeze water and suck out excess water.
FIG. 13 shows a paper product on a punching metal in which a die 21 at the upper part, a suction box 22 at the lower part, and a punching metal 24 attached with a needle felt 20 or a woven net are arranged on the upper part, which are connected in a caterpillar shape. It is an apparatus used for the method of supplying and conveying 23, pressing with a metal mold | die in a metal mold | die part, squeezing, and attracting | sucking excess water with a suction box.
The building material manufacturing press net of the present invention exhibits the most excellent effect when used in a long net type building material manufacturing press device, but is not limited to this, and other building material manufacturing It can also be used in press equipment.
[0020]
Next, the effect of the present invention will be described by showing a comparative test between a press net for building material production as an example of the present invention and a needle felt as a conventional example.
The embodiment shown in FIGS. 1 and 2 was adopted as an embodiment of the present invention, and the conventional needle felt shown below was used as a comparative example.
[0021]
Comparative example
1m on a base fabric using polyamide monofilament twisted warp and polyamide monofilament twisted weft²A needle felt in which a polyamide bat of 2.2 kg per hit is entangled by needling.
[0022]
Comparative test
1. Press watering test
Examples and Comparative Examples are set on a suction box whose top plate is made of punching metal, and a paper product is placed thereon. Next, press watering is performed from above, and the moisture content of the paper product after squeezing is measured, and the dirt state of the examples and comparative examples is observed.
1) Moisture content
Example 25%
Comparative example 27%
2) Moisture content
Example No dirt
Comparative example Dirt (clogging occurs)
2. rigidity
1) Elongation
The elongation and breaking strength were compared in the length and width directions when the tension was 7 kg / cm and 14 kg / cm when dry and wet.
The results are shown in Table 1.
2) Bending
The bending stiffness in the length direction and width direction was compared. (Measured using Taber Stay Funnel Tester manufactured by Kumagai Riki Kogyo Co., Ltd.)
Example is 35.6 g-cm in the length direction 114.8 g-cm in the width direction
Comparative example is 18.4 g-cm in the length direction 14.7 g-cm in the width direction
3. Shower resistance
Examples and Comparative Examples were installed in a frame, and a high-pressure shower was applied under the following conditions to observe the durability against showers.
Shower pressure: 20, 30 Kg / cm²
Nozzle diameter: 1mm
Distance: 100mm
Sliding distance: 50mm warp direction, 50mm weft direction
Sliding speed: Warp direction 50mm / 30sec, Weft direction 50mm / 7sec
Shower pressure 20Kg / cm²In the comparative example, considerable perforation was observed in 30 minutes, and in the example, some fluffing occurred in 45 minutes, but no perforation or yarn breakage was observed.
Shower pressure 30Kg / cm²Then, in the comparative example, punching occurred before one cycle, and in the example, some fluffing occurred in 20 minutes, but no punching or yarn cutting was observed.
4). Nip resistance
The sample was sandwiched between two rolls under the following conditions and slid while adding a nip to determine the fibrillation and crushing of the yarn.
Tensile force: 2.5Kg / cm
Nip roll: φ40mm x 2 (made of chrome plated steel)
Nip condition: Dry type 15Kg / cm
Stroke: 100mm
Sliding speed: 50 times / min
Number of slides: 15,000 round trips
Although the comparative example did not change so much in appearance, the thickness decreased by 40.64%.
In the examples, there was no occurrence of fibrillation, and the yarn obtained by co-twisting the polyamide multifilament taslan processed yarn and the polyamide multifilament wound yarn of the press surface side weft was somewhat crushed and flattened. The decrease in thickness was 7.8%.
5. Cutter resistance
After the press watering test, the papermaking was cut with a building material cutter, and the surface conditions of the cutter contact portions of the examples and comparative examples were observed with a magnifier.
Example No cutter marks
Comparative example The bat is cut and cutter marks are generated.
From the above test results, it can be seen that the press net for building material production of the present invention is far more advantageous and superior than needle felt in all of rigidity, shower resistance and nip resistance.
[0023]
[Table 1]

[0024]
【The invention's effect】
The press network for building material production of the present invention has little leakage of raw materials, can perform press with good yield, and has good water squeezing.
In addition, because it has excellent rigidity, it does not cause cracks or cracks in the papermaking.
In addition, since it has excellent shower resistance, high-pressure shower cleaning is possible and dirt can be easily removed, so that the production rate can be increased.
Furthermore, since the wear resistance and nip resistance are excellent and the thickness does not decrease much, good water squeezing can be maintained until the end of use even if it is used for a long time.
By using such a press net for manufacturing a building material having good rigidity, detergency, water squeezing, and abrasion resistance, it is possible to achieve improvement in the productivity of building materials, which is the final object of the present invention.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a press net for building material production according to the present invention.
FIG. 2 is a cross-sectional view taken along a warp line taken along line II ′ of FIG.
FIG. 3 is a plan view showing an embodiment of a press net for building material production according to the present invention.
4 is a cross-sectional view taken along the warp line taken along line II-II ′ of FIG.
FIG. 5 is a plan view showing an embodiment of a press net for manufacturing building materials according to the present invention.
6 is a cross-sectional view along a warp cut along line III-III ′ in FIG.
FIG. 7 is a cross-sectional view along a warp showing another embodiment of the press net for manufacturing building materials of the present invention.
FIG. 8 is a cross-sectional view along a warp showing another embodiment of the building material manufacturing press net of the present invention.
FIG. 9 is a cross-sectional view along a weft showing another embodiment of the press net for manufacturing building materials of the present invention.
FIG. 10 is an explanatory view showing a press part of an apparatus for manufacturing building materials.
FIG. 11 is an explanatory view showing a press part of the building material manufacturing apparatus.
FIG. 12 is an explanatory view showing a press part of the building material manufacturing apparatus.
FIG. 13 is an explanatory view showing a press part of a building material manufacturing apparatus.
[Explanation of symbols]
1 Warp
2 Press side weft
3 Middle layer weft
4 Dewatered surface side weft
5 Warp
6 Press side weft
7 Middle layer weft
8 Middle layer weft
9 Dewatered side weft
10 Press side warp
11 Dewatered side warp
12 Press side weft
13 Middle layer weft
14 Dewatered surface side weft
15 Press side warp
16 Dewatered side warp
17 Press side weft
18 Dewatered surface side weft
19 Binding yarn
20 felt
21 Mold
22 Suction box
23 Papermaking
24 punching plate

Claims (7)

It is a press network for building material production that places and transports paper-made building materials and presses them with a mold in the middle of conveyance to squeeze the water. The wefts are arranged in multiple layers, and the weft yarns have a small diameter on the press surface side. As a yarn that forms a fine water-squeezing gap between the yarns, the dewatered side is a monofilament or a yarn that forms a fine water-squeezing space between the monofilament and a small-diameter yarn. the monofilament, monofilament twisted yarns, core wire and at least one yarn selected from yarns a monofilament, the warps are arranged a single layer configuration or a plurality of layers, densely forming a fine water-sucking space to the press surface, The building material manufacturing press net is a belt made of a woven net having a three-dimensional space in which a washing shower is easily formed by using a monofilament as a main structure on the dewatering surface side .   A plurality of warp yarns are arranged, and the dewatering surface that contacts the suction box is at least one type selected from monofilament, monofilament twisted yarn, and yarn whose core wire is monofilament, and the press surface side is monofilament, monofilament twisted yarn, and the core wire is monofilament The press net for building material manufacturing according to claim 1, wherein at least one kind of yarn selected from yarns in which fine water-squeezing gaps are formed between yarns and small-diameter yarns gathered together. Yarns with small diameter yarns gathered together to form fine water-squeezing gaps between the yarns, spanned yarn, multifilament, raised yarn, monofilament twisted yarn, moor yarn, filament processed yarn, monofilament wound around the core wire The building material manufacturing press network according to claim 1 or 2, which is selected from yarn, yarn obtained by winding a multifilament around a monofilament core wire, or yarn obtained by co-twisting at least two of them .   The building material manufacturing press network according to any one of claims 1 to 3, wherein the yarn whose core wire is a monofilament is a yarn obtained by winding a monofilament with a spun yarn or a multifilament.   The press net for building material manufacturing according to any one of claims 1 to 4, wherein an intermediate weft layer made of monofilament is disposed between the dewatered surface side weft layer and the press surface side weft layer.   Spun yarn, multifilament, raised yarn, monofilament twisted yarn, moor yarn, filament processed yarn, monofilament yarn wound with span yarn between the dewatered surface side weft layer and press surface side weft layer, multifilament on monofilament core wire The press net for building material manufacturing according to any one of claims 1 to 4, wherein an intermediate weft layer selected from a yarn wound with a filament or a yarn obtained by co-twisting at least two of them is disposed. .   Monofilament and spun yarn, multifilament, raised yarn, monofilament twisted yarn, moor yarn, filament processed yarn, monofilament yarn wound with span yarn between monofilament and weft layer The building material according to any one of claims 1 to 4, wherein an intermediate weft layer made of a yarn selected from a yarn in which a multifilament is wound around a core wire and a yarn in which at least two of these are co-twisted is arranged. Production press network.

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