JPS626965A - Treatment of narrow fabric - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention uses a pancage dyeing machine or a forced circulation type scouring/bleaching device using the principle thereof to scouring/bleaching narrow gauze, cotton fabrics, etc. relates to a novel method for carrying out treatments such as staining.

[Prior art and its problems]

Most of the narrow gauze is scoured and bleached, then cut and used as sanitary materials, and the narrow cotton fabrics are scoured and bleached, then printed and used for yukata fabric, or used as a sash for belly bands, etc. There are many things.

Incidentally, the scouring and bleaching treatment of these narrow materials has conventionally been carried out using a natural circulation method. This involves removing the winding core such as woodwind from the rolled fabric that has come up from the loom, and then using a folding machine to cut the fabric into a predetermined length (for example, 1 roll), as shown in Figure 6, for example. A large number of them are packed in an open treatment tank (B), and a bleaching solution (S) is sprayed from above and allowed to permeate and fall naturally for scouring and bleaching. Then, the bleaching solution that has fallen is pumped again (
P) and the above operation is repeated. In addition, the code|symbol (11) in the figure is a heater.

This method eliminates the need for extra processes such as veneering, as the treated fabric does not shrink or wrinkle.For yukata fabric, it can be printed directly after dehydration and drying, while for sanitary gauze and dry cloth, dehydration and drying are possible.
It has the advantage of being able to be cut into products immediately after drying. However, since the bleaching solution permeates through capillary action, it tends to cause uneven bleaching, and even if it takes around 20 hours to process one batch, it is still not enough and is extremely inefficient.

Furthermore, it is extremely difficult to pack the fabric so that the bleaching solution permeates uniformly throughout the fabric, and requires many years of experience. In addition, roll-shaped textiles are sometimes packed into a processing tank with the core removed, but
In addition to having the same drawbacks as above, an extra step is required to smooth out the wrinkles.

On the other hand, even with the same gauze and cotton fabrics, wide ones are subjected to scouring and bleaching processes that move them through the liquid to efficiently smooth out the scum and create a uniform finish. It is of course possible to apply this method to narrow-width fabrics, but in order to eliminate the shrinkage and wrinkles caused by the processing, it is necessary to carry out a process of filling out and smoothing out the wrinkles before drying, and the processing weight per hour is small (and the cost is high). Therefore, the above-mentioned method has been used for a long time.Therefore, there has been a desire for a method for processing narrow-width fabrics efficiently and at low cost.

Furthermore, in the conventional method, hydrogen peroxide solution could not be used as a chemical solution for scouring and bleaching. Hydrogen peroxide gives a good white finish and is highly safe, but it tends to bleach only the surface area it comes into contact with, so the natural circulation method has the disadvantage of causing uneven bleaching. Therefore, in the natural circulation method, sodium hypochlorite (or sodium chlorite) is used, but since chlorine gas is generated at high temperatures, low temperatures (usually 30 to 4
(below 0°C), the white skin is not sufficient and unevenness tends to occur. Furthermore, there are also issues of wastewater pollution and occupational health.

[Object of the present invention]

The present invention has been made in view of the above, and an object of the present invention is to provide a method for scouring, bleaching, and dyeing of narrow gauze, cotton fabrics, and linen fabrics in a short time, efficiently, easily, and evenly. The present invention also provides a method of processing a narrow roll of gauze, cotton fabric, or the like by attaching it to a processing device as it is, using a forced circulation method. Furthermore, the present invention provides scouring and bleaching of these fabrics using hydrogen peroxide solution.
It is an object of the present invention to provide a method for performing the above operations.

〔composition〕

These objects are achieved by using a perforated bobbin as the winding core of the fabric, and by using a per-no-cage dyeing machine or a forced circulation type scouring/bleaching device using the principle thereof as a processing device.

A pancage dyeing machine (Obermeyer dyeing machine) is a machine in which a carrier with loose wool, thread, or other dyed material stored or attached is fixed inside a continuous body, and the dyeing solution is forcedly circulated for dyeing. The scouring and bleaching of textile products is rarely done.

In the present invention, a forced circulation type scouring/bleaching device (hereinafter referred to as 1 forced circulation device) applying the principle of this package dyeing machine is used, and the treatment liquid includes sodium hypochlorite, sodium chlorite, and filtrate. To perform an excellent white skin bleaching treatment in a short time using a bleaching solution mainly containing a bleaching agent such as hydrogen oxide. Of course, the present invention can also be used to dye objects to be dyed using a package dyeing machine and a dyeing solution, but the present invention will be explained below by taking scouring and bleaching treatment as an example.

First, in the forced circulation device, a roll wound around a perforated bobbin is inserted into a perforated cylindrical spindle provided in a carrier, and a bleaching solution is pumped through the spindle for treatment. The bleach solution is heated by a heater and pressurized by a pump. Furthermore, in order to ensure uniform processing, the processing liquid may be moved in the opposite direction.

Incidentally, when the rolls are stacked on a spindle, it is necessary to prevent liquid from leaking from the boundary portions. To prevent liquid leakage, first, a perforated bobbin whose width is equal to or slightly shorter than the width of the roll is used to pressurize the roll from the middle to eliminate gaps. At this time, it will be more complete if a perforated bobbin is used that has portions without small holes at the upper and lower ends. Alternatively, a spacer having a diameter comparable to the winding diameter of each roll body may be interposed between the roll bodies, and the space between the perforated bobbins may be filled with the spacer. In this case as well, depending on the shape of the spacer, it is preferable to use a perforated bobbin having portions without small holes at the upper and lower ends.

On the other hand, the fabric is usually wound into a roll on a loom onto a wood tube, and after the winding is completed, the wood tube is extracted before being sent elsewhere for scouring, bleaching, or dyeing. This was done to reduce weight and bulk, but conventionally this was sufficient as bleaching was done either as is or folded. However, in the present invention, it is essential that the rolled fabric includes a perforated bobbin. Therefore, it is necessary to insert a perforated bobbin into the rolled fabric, but this may cause the rolled fabric to collapse into bamboo shoots.
'It didn't go very well. The inventor of the present invention has repeatedly conducted trial and error regarding this insertion, and has developed a technique for reliably inserting the bobbin into the center of the roll.

This involves inserting and fixing a perforated bobbin into the space from which the original wood pipe has been removed, using a bobbin insertion tool that will be described in detail later.

In the present invention, in addition to the bobbin inserted using this bobbin insertion tool, it is also possible to use a bobbin that has been wound onto a perforated bobbin on a loom from the beginning, or a bobbin that has been wound onto a perforated bobbin at a processing factory. . In particular, when dyeing, it is better to have a larger bobbin diameter, so a rewinding method is preferred. However, the former requires time and effort to collect the bobbin, and the latter causes time loss, so it is most preferable to insert a perforated bobbin later when only scouring and bleaching are to be performed.

C Embodiment] The present invention will be described in more detail below based on the embodiment shown in the drawings.

Fig. 1 (Al is an example of a perforated bobbin (1) used in the present invention, and the figure 1) is a bobbin insertion tool (2) used for 1m weaving. The perforated bobbin (1) has many small holes (1a)
. . . Metals, particularly stainless steel, acid- and alkali-resistant plastics such as polypropylene molded products are preferably used. Its dimensions include the size of the original woodwind, the type of fabric, and the thickness of the first roll.

Depending on the weaving density etc., the length is approximately 30-50cm, the diameter is approximately 40-60mo+, and the wall thickness is 1-3II1m.
The size of the small hole (1a) is about 2 to 8 mmφ. A portion without small holes may be provided on the surface and both ends of about 1 to 2 cII+.

On the other hand, bobbin insertion +IN, +21 has a base (2a) having a diameter equal to or somewhat larger than the outer diameter of the perforated bobbin (11), and a stepped portion at the rear end for fitting the perforated bobbin (1, 1). (2
b). Also, the tip (2C) is tapered, but a more preferable shape is to make the tip (2c) slightly thicker, then taper again, and then gradually (
Particularly preferably, the diameter increases parabolically.

The bobbin inserter (2) having such a shape can insert the perforated bobbin (11) without breaking the rolled fabric because the insertion resistance is applied only to a part of the bobbin inserter (2). The bobbin insertion tool (2) can be used not only for bobbin +11 but also for reinserting a bobbin into the winding core hole of a rolled fabric.Furthermore, this bobbin insertion tool (2) may be a solid body or a hollow body.

FIG. 2 shows the procedure for inserting the perforated bobbin (1).

First, insert the bobbin insertion tool (2
) from the tip (see Figure 2)). Next, insert the tip of the perforated bobbin (11) into the step (2) of the bobbin inserter (2).
b) and insert it together with the bobbin insertion tool (2) (Fig. 2(C)). At this time, the unique shape of the tip of the bobbin insertion tool (2) allows for extremely smooth insertion. The bobbin insertion tool (2) is preferably one that has low friction with fabrics, such as polished woodwind. When the perforated bobbin full is completely inserted, remove the bobbin insertion tool (2) and
) is obtained.

Next, the rolls (4) are sent to a forced circulation device (5) as shown in FIG. First, carrier (6)
One to several (four in the figure) rolls (4) are inserted into each of a plurality of spindles (7) fixed upright. The symbol (7a) in the figure is a small hole in the spindle (7). This insertion is carried out either by stacking the rolls (4) as they are as shown in Figure 4 (al), or by interposing a spacer (8) between them as shown in Figure 4 (bl or (C1). If (8) is not used, the roll body (
4) A perforated bobbin (1) that is somewhat shorter than 11 (height).
) and tighten with the cap (9) by pressing to eliminate the gap between the rolls (4) and (4) to prevent liquid leakage. Furthermore, Figure 3 shows the case where the spacer (8) is used; (a) shows the state before the cap is tightened, and (b) shows the state after the cap is tightened.

On the other hand, the spacer (8) is used to prevent liquid leakage and collapse of the roll (4).
4) It has a disc shape with a hole in the center and is molded from metal or plastic such as polypropylene. In addition, the spacer (8) in Fig. 4 (bl) has an annular protrusion (8a) of the same size as the perforated bobbin (1) in the through hole, and the perforated bobbin is smaller than the inside of the roll (4). The spacer (8) shown in the figure (C1) has a short cylinder (8h) inserted into the end of the perforated bobbin (1), and the length of the perforated hobbin i11 is used when the length is not short. This is used when the width of the perforated bobbin (1) is not longer than the width of the roll (4).In this case, small holes (7) may be provided throughout the perforated bobbin (1).

Next, the entire carrier (6) is suspended by the hanging fitting (10) and housed and fixed in the link (11) which is the main body of the device, and the entire carrier (6) is airtightly covered with the lid (12).

The bleaching solution (13) is press-fitted from the entry lever (14) provided on the lower side of the chain (11), and the spindle (7),
Each small hole (7a) of the perforated bobbin 0)..., (l
a) Fall downwards while bleaching the fabric. At this time, the bleaching liquid (13) permeates and spreads radially from the perforated bobbin (11), and since it is pressurized, it permeates uniformly throughout the roll.
) also moves along the spacer (8), so when the spacer (8) is used, the shoulder (edge) of the roll is sufficiently bleached. Meanwhile, the bleaching solution (
13) is sucked through the exit vibe (+5) and taken out of the system, and then re-enters and sent to the donkey vibe (14). Excess bleach solution (13) is drained out of the system through an overflow pipe (16). Further, in the figure, reference numeral (17) is a heater for heating the bleaching solution (13), and (18) is a pump. In this way, it has become possible to perform the second scouring, bleaching and water washing treatments in about 5 to 7 hours, which conventionally took more than 20 hours.

By the way, in the present invention, hydrogen peroxide can also be used as the bleaching solution (13) in addition to sodium hypochlorite and sodium chlorite. As mentioned above, hydrogen peroxide is safe, has little pollution problem, and can produce excellent white skin. However, the bleaching speed is slow at low temperatures, so
It is necessary to raise the temperature to about 120°C. It goes without saying that sodium hypochlorite and sodium chlorite can also be used in the present invention.

After the above scouring and bleaching steps, the product is washed with water in the same manner. Next, the rolls (4) together with the carrier (6) are taken out from the device (5), dehydrated and dried to obtain a scoured and bleached roll (48). This roll (48)
For sanitary gauze (19) and Sarashi, cut the appropriate amount and fold it, and for yukata fabric (20), etc., print as is (No. 5)
figure).

In the following, a case was explained in which a bleaching solution was used as the processing solution, but a dyeing solution can be used in a similar apparatus to dye narrow fabrics.

Finally, an example of treatment using hydrogen peroxide as a bleaching solution will be described. First, roll gauze of original fabric 1132c+n to a diameter of about 24cm.
1) is installed, 9 pieces are packed into a unit with a capacity of 4001, and 3
Bleach solution based on 1Og/A solution of 5% H2O2 30
0 I! , to about 110℃, pump pressure IKg
It is extruded from the spindle at a rate of about 51/Kg/min.

After continuing the scouring and bleaching action by such forced circulation for about 6 hours, including washing time, it was dehydrated to a moisture content of about 85%.
It was then dried to a moisture content of about 7%, and finished with scouring and bleaching. The resulting bleached gauze met the pharmacopoeial standards in terms of alkaline residue, glue residue, water-soluble residue, ash content, and white discoloration.

In addition, when a sodium chlorate aqueous solution with a concentration of 0.3% and a temperature of 40°C was used as a bleaching solution and forced circulation treatment was performed for about 7 hours as in the above survey, it was found that the hydrogen peroxide solution was I was able to obtain gauze that had been refined and bleached to a finish that was sufficiently clear of pharmacopoeia, although its quality was somewhat lower.

〔effect〕

As described in detail above, the method of the present invention involves scouring, bleaching, or dyeing a small piece of gauze, cotton fabric, etc. wound around a perforated bobbin while forcibly circulating a treatment solution using a forced circulation device. It is.

Therefore, more complete treatment can be performed in about one third of the processing time compared to the conventional natural circulation method, allowing for a significant rationalization of the number of equipment and number of workers, as well as reducing the amount of material exposed to the processing equipment. It is easy and quick to get in and out of the dyed items.
Work efficiency will also be greatly improved. Furthermore, since hydrogen peroxide can be used as a bleaching solution, the working environment is improved, and it is extremely useful, as it allows for high-quality scouring and bleaching finishes with high whiteness and less fabric damage. Furthermore, if the perforated bobbin is re-inserted using a bobbin insertion tool, there is no need to return the bobbin or rewind it, allowing efficient preparation.

[Brief explanation of the drawing]

Fig. 1 (al is a perspective view showing an example of a perforated bobbin used in the method of the present invention, and the numerals in the figure) is a perspective view showing an example of a bobbin inserter, and Fig. 2 is a perspective view showing an example of a bobbin inserter used in the method of the present invention, and Fig. 2 is a perspective view showing an example of a perforated bobbin used in the method of the present invention. +al is a perspective view of the rolled fabric with the woodwind removed, (b) is a cross-sectional view with the bobbin insertion tool inserted, (
C) is a cross-sectional view of the perforated bobbin inserted, (d) is a perspective view of the roll with the perforated bobbin inserted, Fig. 3 is a cross-sectional view showing an example of the scouring/bleaching device, Fig. 4 (al, (b
1 and (C1) are partial sectional views of the rolls inserted into the spindle in different ways, FIG. 5 is a perspective view of the rolls after finishing, and FIG. 6 is a diagram of the scouring/bleaching apparatus according to the conventional method It is a schematic diagram showing an example. 1... Bobbin with holes 8... Spacer 2... Bobbin insertion tool 11...
... Shrunken body 3 ... Rolled fabric 13.
... Bleach solution 4 ... Roll
14... Entrance vibe 4A... Roll after treatment 15... Exit vibe 5...
・Forced circulation device 17... Heater 6.
...Carrier 18 ...Pump 7 ...Spindle

Claims (1)

[Claims] 1. After inserting one or several rolls of narrow fabric such as gauze or cotton cloth with a perforated bobbin in the center onto the spindle of a carrier and sealing the upper end with a cap. A method for processing narrow-width textiles, characterized in that the carrier is housed and fixed in a case, and the textile is subjected to scouring, bleaching, or dyeing treatment while forcedly circulating a processing solution. 2. The method for treating narrow-width fabrics according to claim 1, wherein the rolls are inserted into a spindle with a spacer interposed between them. 3. The method for treating narrow fabrics according to claim 1, wherein a hydrogen peroxide solution is used as the treatment liquid for scouring and bleaching. 4. The method for finishing a narrow-width woven fabric according to claim 1, wherein the perforated bobbin is inserted after the winding core used in weaving the woven fabric is extracted. 5. The perforated bobbin is inserted by fitting its tip into the step at the rear end of the guide and inserting it into the center of the roll following the tapered tip of the guide. Method for processing narrow-width fabrics as described in Section 1.