JPH0534730Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Application Field] The present invention relates to a regenerated dust-collecting cloth for air purification. [Prior art] In conventional dust-collecting overfabrics, piles of pile weave or pile knitting are naturally oriented in the weaving direction or knitting direction, and the oriented piles are cut to a predetermined length, and the cut The tip of the pile was split and used as is. In addition, as another overlay fabric, the above-mentioned split cut pile was pressed with a heated roll to give the cut pile a certain directionality. Furthermore, another fabric used was one in which the root part of cut pile was treated with resin and the tip part was split. [Problem to be solved by the invention] However, in the case of the above-mentioned conventional dust-collecting cloth, the length of the cut pile, which naturally slopes toward the weaving direction or knitting direction, is relatively long. In addition, since the top end of the pile is used as it is, it has the disadvantage of increasing pressure loss. In other cases, the split cut pile is pressed using heated rolls to give the cut pile a certain directionality.
The cut pile has the drawback that it is susceptible to fatigue and pressure loss quickly increases. In this case, the root part of the cut pile is hardened with resin, but it is not so effective against the natural inclination direction of the cut pile, and it still causes sagging, resulting in a large pressure loss. . On the other hand, if the resin treatment of the root portion of the cut pile is made too strong, it causes various problems such as poor splitting of the hairs and a significant drop in dust collection efficiency. The present invention was developed in view of the above points.The purpose of the present invention is to maintain the three-dimensional structure of the cut pile for a long period of time, and to provide a fabric with low pressure loss and high dust collection efficiency. There is a particular thing. [Means for Solving the Problems] The dust collecting cloth according to the present invention is produced by cutting piles of pile weave or pile knitting using thermoplastic synthetic fibers into a predetermined length, and splitting the tips of the cut piles. In the dust collecting cloth, the roots of the cut piles are made to stand up against the natural direction of inclination, and the split ends of the cut piles are bent in a weaving direction or a direction opposite to the knitting direction. It is characterized by: [Function] The overcoat member of the present invention is formed into an endless shape, for example, and the endless overcoating material is hung on the left and right rolls in a stretched state, and the rolls are slowly rotated, so that one side of the overcoat material is connected to the introduction port for dust-containing air. If the machine is operated with the cut pile set to The fibers are bent in the weaving direction or in the opposite direction to the knitting direction, and the surface is covered with a split pile with the tip bent, so the pile is extremely difficult to deform and has little pressure loss, making it easy to collect dust. It is done efficiently. In addition, as another method of use, the filtered fabric of the present invention is stretched over the inlet of dust-containing air, and the filtered fabric is slowly wound up alternately with the left and right winding rolls, so that the cleaned air that has passed through the filtered fabric is Even when the dust is discharged from the outlet, the pile is very difficult to deform, pressure loss is small, and dust collection is carried out efficiently. [Example] Hereinafter, an example of the present invention will be described based on the drawings. Reference numeral 1 denotes a thermoplastic synthetic fiber fabric consisting of a base portion 2 and a cut pile 3. The base part 2 is made of thermoplastic synthetic fiber, and the warp 2
A and weft 2b are crossed to form a pile weave or pile knitted base,
It's not much different than before. Reference numeral 3 denotes a cut pile which is hung on the warp 2a or weft 2b of the base portion 2, stands up above the base portion 2, and is cut into a predetermined length. This cut pile 3 has its root portion 3a standing upright against the natural direction of inclination. Cut pile 3
For example, when vinylidene chloride fiber is used, the melting point of vinylidene chloride fiber is 155°C, so hot air adjusted to a slightly lower temperature of 140°C is used to raise the root part 3a from the lower side of the base part 2 to the upper side. By spraying toward the direction, the cut pile 3 is softened and forced to stand up diagonally or vertically against the natural direction of inclination (Figure 1a shows the case where it stands up vertically). , and is cooled and solidified in this forced standing state (see Figure 2). In addition, as another means for making the root portion 3a of the cut pile 3 stand up against the natural direction of inclination, as shown in FIG. , the lower side is a general press roll _R1 , and the upper side is obtained by passing between a hot roll _R2 whose temperature is slightly lower than the melting point of _the fiber. If so, set the temperature to 145℃. In any case, the present invention is not limited to the above-mentioned means as long as it is a means for causing the root portion 3a of the cut pile 3 to stand up against the natural direction of inclination. Further, the tip portion 3b of the cut pile 3 is subjected to hair splitting 3c using a conventional method. Then, the tip end 3b of the cut pile 3, which has been split 3c, is bent in the weaving direction or in the opposite direction to the knitting direction. As shown in FIG. 2, the bending means is such that after the root portion 3a of the cut pile 3 is erected by hot air, the lower press roll _R1 and the upper heat roll R2 are used to bend the cut pile ₃ .
Either pass the excess fabric between the
This is carried out by means such as passing the cloth 1 between R ₁ and the upper heating roll R ₂ . The bending angle is horizontal to the surface of the base portion 1 of the sheath fabric or within a range of up to 30° in the direction opposite to the weaving or knitting direction.
If the bending angle is too large, the dust collection efficiency will be lowered, which is not appropriate. Next, a method of using the fabric obtained in the above example will be described. For example, as shown in FIGS. 4a and 4b, the cloth 1 is
The endless fabric 1 is stretched over left and right rolls T ₁ and T ₂ , and the rolls T ₁ and T ₂ are slowly rotated in the same direction.
This excess cloth 1 has an introduction part E for dust-containing air on one side.
It is set on the side. When the operation is started in this state, dust-containing air is introduced from a direction perpendicular to the front surface of the cloth 1 moving at a constant speed, and even if air pressure is applied to the front surface of the cloth 1, the root of the cut pile 3 The part 3a stands up against the natural direction of inclination, and the hair splitting 3 of the cut pile 3
The tip portion 3b that has been curved is also bent in the direction opposite to the weaving direction or knitting direction, and since this tip portion 3b is bent and the surface is covered with the cut pile 3 of the hair splitting 3c, the cut pile 3 is extremely It is difficult to deform, has little pressure loss, and collects dust efficiently. The clean air that has passed through the filter cloth 1 is released from the left and right outlets, respectively, as shown in FIG. 4b. Alternatively, as shown in Fig. 5, the cloth 1 is stretched over the introduction part E of the dust-containing air, and the cloth 1 is rotated alternately between the left and right take-up rolls _L1 and _L2 . Even when the cleaned air that has passed through the fabric 1 is discharged from the outlet of the hood F during construction and winding, the cut pile 3 is very difficult to deform, and the pressure loss is small, so that dust collection is performed efficiently. <Comparison of our proposed product and conventional product> Both the proposed product and conventional product have a melting point of 150℃ and a thickness of 30d.
vinylidene chloride fiber was used. The conventional product uses a double lash machine to cut the raw fabric pile into 10 mm lengths, and splits the pile to maintain its natural slope. The product of this invention uses a double lash machine to cut a pile of original fabric into a length of 10 mm, splits the pile, and then cuts the fabric into the lower press roll shown in Figure 3 with a length of 145 to 150 mm. The hair at the tip of the cut pile is made to stand up against the natural direction of inclination by passing the cut pile between the rolls of 2 mm between the upper heated roll and the upper heating roll heated to ℃. A piece with the split part bent in the opposite direction to the knitting direction was used. Test conditions for the invented product and conventional products were conducted in accordance with JISB9908. The dust concentration was 30 mg/m ³ and the overspeed was 2.5 m/sec.

[Table] [Effects of the invention] As described above, the present invention allows the roots of the cut pile to stand up against the natural slope direction, and also to erect the split ends of the cut pile in the direction opposite to the weaving direction or knitting direction. Because it was bent toward
It has the following unique effects. Since the pressure loss due to excess cloth is small, the electric capacity of the fan used can be small. Since the air volume per excess area is large, a highly efficient dust collector can be created. The pile maintains a space in the base without lying, and the curved, split ends of the pile cover the surface of the cloth, improving dust collection efficiency and reducing pressure loss. It will be done.

[Brief explanation of drawings]

Figures 1a and b are cross-sectional views and plan views showing one embodiment of the present invention, Figures 2 and 3 are schematic illustrations showing the cut pile processing method of the present invention, and Figures 4a and b.
is a schematic explanatory diagram showing an example of how to use the present invention, FIG. 4b is a sectional view taken along the line A-A′ of FIG. 4a, and FIG. FIGS. 6a and 6b are a sectional view and a plan view showing a conventional example. 1... Excess fabric, 2... Base part, 3... Cut pile, 3a... Root part, 3b... Tip part, 3c
...hair splitting.

Claims (1)

[Claims for Utility Model Registration] (1) A dust collection cloth made by cutting a pile of pile weave or pile knitting using thermoplastic synthetic fiber into a predetermined length and splitting the tips of the cut pile, A dust-collecting overcloth characterized in that the roots of the cut pile are made to stand up against the natural direction of inclination, and the split ends of the cut pile are bent in the direction opposite to the weaving direction or knitting direction. . (2) The roots of the cut pile are made to stand up against the natural orientation direction, and the split ends of the cut pile are oriented in a direction opposite to the weaving direction or knitting direction, so that they are horizontal or parallel to the fabric base surface.
1. The dust collecting overcloth according to claim 1, which is curved up to 30 degrees.