JPS5823961A - Treating process of raised 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 The present invention relates to a process for treating fabrics with raised naps, such as carpets.

The present invention relates to the technique of beating textiles with steam (such techniques have long been used for carpets), in particular to create a napped surface in the form of grooves/loops or zigzags. It alleviates processing defects that are inherently present in textiles and are extremely difficult to correct.

Techniques of this kind are commonly practiced, especially for napped fabrics of synthetic fibers. Although it is generally rare, it can also be found in carpets with looped naps and woven carpets.

Modern dyeing or finishing methods and equipment have changed in ways that increase the above disadvantages. The disadvantage of this is that it bends, tangles or crushes the nape. This is applied to the nap by squeezing with various rollers, especially rollers, used in processes such as dyeing, rinsing, and drying. Such bending, tangling, or squeezing generally remains in the finished fabric.

Dyeing and/or dyeing of napped woven yarns or fabrics with napped napped yarns
Most printing today is typically done at high speed and in one continuous process. In contrast, in the past, the dyeing and/or printing and subsequent processes were performed at a slow rate, and were typically performed step by step, rather than continuously. Furthermore, most dyeings today are carried out at lower temperatures, compared to traditional dyeings which are carried out at or near the boiling point.

The slow speed and high temperature of traditional methods
The time-consuming dyeing and finishing process imparted considerable variation to the woven and napped yarns, causing them to become considerably wider or fuller. However, today's methods, which operate at high speeds and low temperatures, have very little variation in the napped fabric and yarns, so there is little fluffing or spreading of the yarns. As a result, bends, tangles or crushing imparted by subsequent processes do not recover as desired and this will show up as defects in the finished carpet.
It is therefore an object of the present invention to provide an improved process for fluffing and raising fabrics having naps which are susceptible to bending, tangling or crushing as described above.

As will be described later, the present invention relates to a dyeing or printing process in which the nap of a fabric is heated to a predetermined maximum temperature and passed through various rollers to bend, tangle, or crush the nap of the fabric, and after the above process. , heating the yarn to a yarn restoration temperature in the range of 170°F to 212°F above the predetermined temperature, and then beating the fabric while the yarn is within 20°F of the restoration temperature; By doing so, the object is to provide a process for raising and fluffing the raised hair.

The present invention will be explained in detail below with reference to the drawings.

Today's high speed, continuous dyeing and/or printing equipment for napped fabrics such as carpets does little to attempt to maximize the fullness of the napped yarns. This dyeing is done cold and fixed with steam. In most cases when dyeing is applied, the carpet is placed in a steam chamber with most of the naps twisted (tangled) and "heat set" at about 212 degrees Fahrenheit. After the dye has set,
The carpet is rinsed with water or hot water, dried and rolled. As a result, the finished carpet lacks a plump feel (by hand) and is subject to considerable napping during the finishing process.

The object of the present invention is to provide a simple and reliable method for fluffing and standing up the napped yarn.

Prior to backcoating, the carpet is heated in a closed steam chamber to a yarn recovery temperature above the highest temperatures used in conventional finishing processes. After reaching this restoration temperature,
The carpet is beaten with one or more back beaters located in the steam room. When the napped yarn is beaten, it is heated and becomes pliable, so the napped yarn becomes fluffy and stands up. The carpet is cooled before contacting the facing rollers.

As shown in FIG. 1, a series of carpets 10 whose fabric naps 11 have been bent, tangled, or crushed during the dyeing or printing process are guided by a series of rollers 12-22. These rollers are arranged so that the carpet passes through the steam chamber 5. In the steam room 25,
Horizontally arranged steam boxes 23 and 24 and three-bar beaters 26 and 26' are provided. The steam boxes 23 and 24 have upward openings and are arranged to vent steam from the back of the carpet onto its raised surface. Roller 14 inside steam box 23
and 15 and rollers 16 and 1 in the steam box 24
7 is to prevent the carpet from coming into contact with the edge of the steam box.

A three-bar beater 26 is provided in the steam box 25 and is connected to rollers 18 and 1 after the steam boxes 23 and 24.
9. The other three-pronged beating machine 26' is installed in the steam chamber 25, and is used for beating machines'.
It is located between rollers 19 and 20 after 26.

After leaving the steam chamber 25, the carburetor 10 passes through a cooling zone 28 created between the steam chamber 25 and the grooved roller 22.

The moving speed of the carpet 10 through the configuration of FIG.
The rate is generally 25 to 50 feet/minute, preferably 35 feet/minute. However, if the sections of the steam chamber 25 and the cooling sea 728 are made larger, the moving speed of the carpet 10 is also increased accordingly.

Length of cooling zone 28, carpet is steam chamber 25
The temperature at which the carpet is heated and the speed at which the carpet moves is 11 by the time the carpet reaches the fluted rollers 22.
Allow the temperature to decrease below 0°F.

Steam boxes 23 and 24 are filled with steam 27.

This steam is (by means not shown) 10
The carpet 10 is heated to a temperature in the range of 170°F to 212°F and above the maximum temperatures achieved in conventional dyeing or printing operations. Preferably, the temperature of the steam chamber 25 that heats the carpeller 10 is 170°C.
The range is from 0.degree. F. to 190.degree. F., and at this temperature the carpet is beaten by three-bar beaters 26 and 26' in steam chamber 25.

The most erected nap occurs when the steam from the steam box is passed from the back of the fabric to the surface. Raising the nap temperature to the required temperature will cause more Air will build up, and blowing steam on the back of the fabric will drive out this air buildup.

As another example, one or both of the beaters 26 and 26' can be provided outside the steam chamber 25, in which case the temperature of the carpet when it reaches the beater is the same as that heated in the steam chamber 5. Make sure that the temperature does not drop more than 20 degrees compared to the carpet temperature. Desirably, the carpet 10 should be at a temperature in the range of 170 DEG F. to 190 DEG F. when beaten by the beaters and/or 26'.

The beating machines 26 and 26' are, for example, 400 to 1000
Hit the power bet lO in strokes/minute. In a typical process configuration, the three-bar beaters 26 and 26' are
83, r, pm, about 85 to carpet 10
Gives 0 strokes/min. Impact on the carpet being hit, (++ + ++x −+ >441&+
x IL wA' 6/+/ x= , b −
[J-, L 1nt, p] The distance deflected from the path of travel of the cape ranges from 1 to 3 inches, preferably 2 inches.

As the beating machine, one having three or more bars or less can be used as required, and it is also possible to use two or more beating machines.

[Brief explanation of the drawing]

FIG. 1 is a diagram illustrating the movement of a raised fabric within the apparatus used in the improved process according to the invention. 10...Carpet, 11...
...piloerection, 12.13,14,15,16,17,1
8, 19, 20. 21+22...roller, 23, 2
4... Steam box, 5... Steam room,
26.26'...beater, 27...
...Steam, 28... Cooling Zone Patent Applicant Bigelow Sanford Inc. Patent Attorney Patent Attorney Yama, Moto Megumi -

Claims (1)

[Claims] (1) In a dyeing or printing process in which the nap of the fabric is heated to a predetermined maximum temperature and passed through various rollers, the nap of the fabric is bent, tangled, or crushed. Afterwards, the fabric is heated to 170°C at a temperature higher than the predetermined temperature by passing steam from the back side to the surface of the fabric.
The raised fabric is raised by heating the fabric to a yarn restoration temperature in the range of 212°F to 212°F, and then striking the heated fabric while the fabric is within 20°F of the restoration temperature. A process for treating fabrics with raised naps, characterized by increasing their standing and flexibility. 2) The process of claim 1, wherein the restitution temperature of the yarn is in the range of 170F to 1900F. 3) The woven fabric is 400 to 100 yen in the beating process.
Claims 1 or 2 that receive 0 strokes/min.
term processing process. 4) The process of claim 1 or 2 or 3, wherein the fabric is deflected a distance of 1 to 3 inches during the beating step. 5) The process of claim 4, wherein the fabric moves linearly along a travel path at a speed in the range of 25 to 50 feet/minute during the heating and beating steps. . 6) The treatment process of claim 5, further comprising the additional step of cooling the fabric to a temperature below 110 T after the beating step and before the fabric contacts subsequent treatment rollers.