JPH04202841A - Method for processing web - Google Patents

Abstract

PURPOSE:To prepare a web rubbed to produce good flexibility, by wetting the surface of an endless rubber belt with water, transferring the water to the fed web, and subjecting the wetted web to a web-shrinking process with a hot cylindrical roll. CONSTITUTION:When a web is fed into a web-shrinking machine in which an endless rubber belt is brought into contact with a part of a hot cylindrical roll having a surface temperature of >=60 deg.C, the surface of the endless rubber belt is wetted with water, and the water is transferred to the fed web to give a web water content of 2-20%.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a fabric processing method in which a fabric is subjected to a shrinkage treatment mainly in the warp direction and at the same time imparts flexibility by kneading.

Conventional technology Traditionally, fabrics have been processed to prevent shrinkage after washing.
Fabrics can be mechanically modified using chemical setting methods such as modifying fibers with chemicals used for natural fibers and fixing the fibers with resin, as well as heat setting methods and anti-all methods used for synthetic fibers. There are physical methods of pushing the However, the chemical setting method described above has problems such as fiber embrittlement and hardening of the fibers, and the physical method described above has a limit in shrinkage. In particular, thick cotton fabrics do not have sufficient shrink-proofing effects, but conventional physical methods that allow continuous shrink-proofing without hardening the texture have disadvantages in terms of workability and reproducibility. Although it is sufficient, it has been adopted. Examples of shrink-proofing machines that have been used in this continuous method include a sanphorizing machine and a camfit machine known from Japanese Patent Publication No. 42-13419, which has a large shrinkage effect.

This type of shrink processing machine with a large shrinkage effect rotates an endless rubber belt that is pressed against a heat cylinder roll by a pressing rubber roll, and is different from many other shrink processing machines that use hard press rolls. It is possible to greatly change the length of the surface of the endless rubber belt at this press-contact portion. By successfully transmitting this large expansion/contraction change to the fabric, we can more effectively impart shrink-proofing through shrinkage and flexibility through kneading to the fabric, compared to many other shrink-processing machines that use hard press rolls. I can do it. The mechanical shrinkage effect in the former sanphorization processing machine is around 5 to 10%, and in the camfit processing machine it is 5 to 25%. It is well known that the forced shrinkage rate produced by these shrinkage machines cannot be applied to all fabrics in the same way;
Among the thick cotton fabrics mentioned above, especially those with a small number of twists, such as denim, have poor slippage on the heat cylinder surface of the shrink processing machine and are difficult to shrink. By installing a spray water supply device or a steam jet device to moisturize the fabric before introducing it into the shrink processing machine, it improves the sliding of the heat cylinder surface of the shrink processing machine and improves the movement between yarns and fibers. , methods have been adopted to increase the shrinkage effect. However, installing a mist water supply device or steam ejection device in front of the shrink processing machine requires a separate installation location, and at the same time, measures to prevent the spouted water and steam from scattering and drain are required. There was a problem with the overall size.

Problems to be Solved by the Invention The present invention solves these problems.In particular, it is possible to moisturize fabrics and rubber belts by applying an attached device without installing a humidifying device in front of the shrink processing machine. The object of the present invention is to provide a fabric processing method that can cool the fabric and soften the fabric at the same time.

Means for Solving the Problem In order to solve this problem, the present invention provides a fabric shrinkage processing machine of the type in which an endless rubber belt is operated in contact with a part of a thermal cylinder roll whose surface temperature is 60° C. or more. When introducing the endless rubber belt, moisten the surface of the endless rubber belt with water,
By transferring this water to the fabric, the fabric is moistened so that its moisture content is in the range of 2 to 20%.

Hereinafter, the method of the present invention will be explained in detail using the drawings.

The processing method of the present invention is suitably used for fabrics mainly made of plant fibers or animal fibers.

As for the form of the fabric, textiles, silk, etc. are applicable.

In FIGS. 1 and 2, the fabric 1 is connected to the guide roll 2.
The endless rubber belt 3 is introduced while being pressed against the thermal cylinder roll 5 by the pressing rubber roll 4. The fabric 1 then comes into contact with the surface on which the endless rubber belt 3 is stretched and passes between the heat cylinder roll 5 and the endless rubber belt 3 while being forcibly compressed. It is led out in a low tension state by rolls 6 and cooling cylinder rolls 7.

At this time, the surface temperature of the thermal cylinder roll 5 is adjusted to around 100°C.Next, in order to moisturize the fabric, water is first applied pressure from the spray nozzle 9 of the shower device 8 and sprayed onto the endless rubber belt. 3 to wet the surface of the endless rubber belt 3 by spraying it uniformly over the entire width of the surface. The water that moistens the surface of this endless rubber belt 3 is
Since the endless rubber belt 3 is rotating in the direction of the arrow in FIG. 1, it reaches the introduction part of the fabric 1, where the moisture on the surface of the endless rubber belt 3 is transferred to the introduction fabric 1. That is, fabric 1
is introduced between the endless rubber belt 3 and the thermal cylinder roll 5, and when the fabric 1 is forcibly contracted, it is held by the endless rubber belt 3, and while sliding on the surface of the thermal cylinder roll 5, the fabric 1 itself is It shrinks uniformly as it shrinks. At this time, if moisture in the range of 2 to 20% is transferred from the surface of the endless rubber belt 3 to the cloth, the movement between the fibers and the surface of the thermal cylinder roll 5 may occur in 100% cotton thick fabrics. The fibers are moved and deformed and fixed in accordance with the contraction of the endless rubber belt 3, and the anti-shrinkage effect is enhanced. Moreover, by keeping the surface temperature of the thermal cylinder roll 5 at 100° C. to 120° C., after the fabric 1 is drawn out, moisture rapidly evaporates and the fabric 1 is dried and fixed. At this time, the fabric 1 is forcibly shrunk by 5 to 20% in the warp direction and at the same time is massaged,
Flexibility is imparted to the fabric. In addition, the transfer of moisture to the fabric 1 is 2 to 20%, preferably 6% based on the weight of the fabric.
83i front and rear! It is. When the moisture content exceeds 20%, drying becomes insufficient, and shrinkage and fixation tend to be released and wrinkles to occur. Further, if the surface temperature of the thermal cylinder roll 5 is lower than 60° C., the shrinkage effect and drying of the fabric 1 will be insufficient, which is undesirable. Note that the shower device 8 is preferably of a spray nozzle type.

If you use a rough type of pipe with holes drilled in it or a tub with the edge cut out, water cannot be applied uniformly to the surface of the endless rubber belt 3. Please note that the shower device 8 should be installed in a place where the water is not attached to the machine's accessories or the like. It is preferable to place the spray nozzle 9 of the shower device 8 at the rear or bottom of the machine where it does not touch the fabric 1.
The distance between the rubber belt 3 and the endless rubber belt 3 is suitably about 10 to 20 (2), although it depends on the performance of the spray nozzle 9.

Function As described above, in the present invention, the endless rubber belt has a surface temperature of 6
When the fabric is introduced into a type of fabric shrinking machine that is operated in contact with a part of a heated cylinder roll at 0° C. or higher, the surface of the endless rubber belt is moistened with water, and this water is transferred to the introduced fabric. This is a fabric processing method characterized by moisturizing the fabric so that its moisture content is in the range of 2 to 20%. It has an anti-shrunk effect that cannot be obtained with thick fabrics, and has a soft texture.
In addition, since the rubber belt, which easily deteriorates due to heat, can be cooled by moisture, the durability of the rubber belt can be improved.Furthermore, there is no need to provide a place for a special humidifier as in the past, and it can be used as is. All you need to do is install a spray device.

Example Next, the method of the present invention will be explained using examples.

Example 1 The fabric used was cotton 10 made of 14 ounces with warp number 7 and weft number 6.
De-sizing, scouring, silgeting 0% denim under normal conditions,
After pretreatment such as bleaching and dyeing, a softener and an antistatic agent were applied and the material was dried. After drying, the width of the denim is narrower than the finished width due to the tension during the processing process, and the width is set slightly wider than the finished width by the zero-order pin tenter, which was stretched in the warp direction, and overfeed does not cause wrinkles. As a result of measuring the washing shrinkage rate of denim in this state using the home washing method according to JISL-0217,103, the shrinkage rate in the width direction was 2.5%, but the shrinkage rate in the warp direction was 2.5%. The fabric was subjected to forced shrinkage using a fabric shrinkage machine as shown in FIG. The conditions for the shrinkage processing were that the surface temperature of the thermal cylinder roll was 10'C, the endless rubber belt was compressed and deformed with a pressing rubber roll until the thickness of the endless rubber belt became 30m, and the processing speed was 10m/1lin. In order to adjust the moisture content of the fabric to 6%, which was maintained in the preliminary test,
Spray nozzles 9 to 1 of the shower device 8 shown in FIG.
Water of 1.7 ρ per minute was sprayed uniformly over the entire surface width of the endless rubber belt 3 to wet the surface of the endless rubber belt 3. After the denim is forcibly shrunk by being introduced between the wetted endless rubber belt 3 and the heat cylinder roll 3, the denim is heated by the cooling cylinder roll 7 provided on the outlet side while adjusting the tension so that no tension is applied. It was taken out. Immediately after being removed, the moisture that had been moistened evaporated from the denim, and by the time it was shaken off, it was almost dry. As a result, the 1m
The length between the marks was 92.6011, and forced contraction of 7.4% in the warp direction was possible. As a result of measuring the shrinkage rate of this denim using the shrinkage rate measurement method used before introduction, the finished product had a shrinkage of 0.5% in the width direction and 1.2% in the warp direction, and had a beautiful appearance with no fine wrinkles. The texture was also very soft.

Comparative Example 1 The same sample and the same shrink processing machine as in Example 1 were used, and forced shrink processing was performed in the same manner as in Example 1, except that the endless rubber belt was not moistened and the fabric was not moistened with moisture.

As a result, although the texture was considerably improved, the washing shrinkage rate was poor at 1.5% in the width direction and 5% in the warp direction, and the appearance was poor with small ripple-like wrinkles all over the surface. .

Effects of the Invention As described above, according to the processing method of the fabric of the present invention, it is possible to obtain good productivity, uniform quality, and excellent shrink-proofing properties as well as a soft texture. In addition, the water cooling device that was conventionally provided to cool the rubber belt after work can also be used, and there is no need to prepare a device to supply water in advance or a special installation location as in the past.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing an example of a shrinkage processing machine used when implementing the processing method of the present invention, and FIG. 2 is an enlarged perspective view of the shower device shown in FIG. 1. 1...Fabric, 3...Endless rubber belt, 5...Heat cylinder roll, 8...Shower equipment! , 9... Spray nozzle. Agent Yoshihiro Morimoto Figure 1 Figure 2

Claims (1)

[Claims] 1. When introducing a fabric into a type of fabric shrinking machine in which the endless rubber belt is operated in contact with a part of a thermal cylinder roll whose surface temperature is 60°C or higher, the surface of the endless rubber belt is moistened with water. A method for processing a fabric, characterized in that the fabric is moistened by transferring water to the introduced fabric so that the moisture content thereof is in the range of 2 to 20%.