JPS6024850B2 - Method for manufacturing fused crimped yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a method of producing bulked fused crimped yarn in a stuffing member using a heated compressed fluid.

[Prior art and its problems]

Conventionally, methods for obtaining bulky textured yarns by crimping yarns have been known.

Also known is a method of heat-treating yarn to obtain a fused processed yarn. However, there is still no known satisfactory method for fusing the stuffing member while imparting curling to the stuffing member.

In view of such conventional technology, the present inventors have developed a method in which the constituent fibers also have fused portions, even though they are bulky yarns that have been given warp, and exhibit sufficient elasticity for fabric re-formation. In order to provide a method for obtaining a fused crimped yarn having a novel structure that is flexible, crisp, and dry to the touch, the present invention was achieved as a result of intensive research.

[Object of the present invention]

That is, the object of the present invention is to provide a novel fusion method that allows the production of fused crimped yarn having the characteristics described above using a heated compressed fluid with high efficiency and high productivity without complicating the equipment considerably. It is an object of the present invention to provide a method for manufacturing a wrapped warp yarn.

[Configuration of the present invention]

That is, the method of the present invention has the following configuration.

"In a method for producing a fused crimped yarn by aligning at least two types of yarns consisting of a high melting point fiber yarn and a low melting point fiber yarn, the melting point temperature is higher than that of the low melting point fiber yarn and A heated compressed fluid having a temperature lower than the melting point of the high melting point fiber yarn is ejected into the stuffing member, and the heated fluid guides the aligned yarn into the stuffing section, and then the yarn is deposited and filled, and the The melting point fiber yarns are fused and the high melting point fiber yarns are given forming crimps, and then heated at a temperature sufficiently low to fuse the yarns and stabilize the forming crimps. A method for producing a fused wound striped yarn, which comprises cooling the yarn with a fluid stream and pulling it out from a stuffing member.
In the method of the present invention, any combination of two or more types of yarn consisting of a high melting point fiber yarn and a low melting point flow fiber yarn may be used, and in addition to this, other synthetic fibers, recycled fibers, and semi-synthetic fibers may be used. , natural fibers, etc. may be arbitrarily combined.

Further, in the case of synthetic fiber melt paper yarn, a yarn made of a conjugate fiber such as side-by-side or thin fiber may be used as a component of either the high-melting point fiber yarn or the low-melting point fiber yarn. On the other hand, the shape may be filament yarn or spun yarn, and is not particularly limited to these materials and shapes. In other words, it may be a composite fiber composed of two or more components with different melting points, or a composite fiber composed of two or more types of yarns, or a mixture or drawn yarn of two or more yarns, in which at least one component has a melting point higher than the melting point temperature of the other components. It is sufficient that the structure has a melting point higher than the temperature. A stuffing unit that can combine two or more types of yarns with different melting points together with a heated compressed fluid having a temperature higher than the melting point temperature of at least one type of yarn to create a low-pressure area with a pressure lower than the pressure of the fluid. The fibers are ejected into the village, and along with this expansion, the constituent single fibers of the yarn are opened and collided with one end of the filled and stacked yarn, which is already made of bulk-processed yarn, to form and wind the yarn. Rice bran processing is applied.

At this time, when the yarn is introduced into the stuffing member together with the heating fluid, the yarn is instantaneously heated to a high temperature while it comes into contact with the high-temperature fluid and reaches the low-pressure area 9 in the figure. The yarn component that has a melting point causes shrinkage,
Place it in the center of the entire thread. The high melting point yarn component is arranged outside the entire yarn, and in this state the yarn is filled and deposited in the stuffing member. Next, the low-melting point yarns undergo melting, and adhesion by fusion begins at the points of contact with the high-melting point yarns or even at the points of contact between the low-melting point yarns,
Moreover, the high melting point yarn is subject to buckling due to deposition.

After remaining in this state for a time and temperature sufficient to stabilize the welding and buckling crimp of the yarn, a fluid of a temperature low enough to stabilize the welding and curling is applied. The yarn is then cooled and then withdrawn from the stuffing member. That is, when a low-melting point fiber thread and a high-melting point fiber thread are aligned and processed in a stuffing member, the low-melting point fiber is shrunk at the thread introduction part and placed in the center of the thread, and then processed in the stuffing member. It is fused inside.

On the other hand, since the high melting point fibers are arranged on the outer periphery of the yarn and are given warp by buckling, the outer periphery is further covered. Therefore, the buckled yarns do not rub against each other. Next, the entire yarn is cooled, so that the low melting point component present in a fused state in the core of the yarn is cooled and crystallized, returning to the state obtained as a normal yarn. That is, it is deposited and filled in a fused state in a heated castle, but is crystallized by cooling and can be taken out as an independent thread. The heated compressed fluid used in the method of the invention includes, for example, hot air,
There is steam, etc., but heating fluid is required at least at a temperature higher than the melting point of the low-melting point yarn and lower than the melting point of the high-melting point yarn. Most desirable.

Particularly, nylon 6 and the like melt at a steam temperature of 140° C., and the thermal effect of steam has a large effect. A fluid treatment device that performs a bulky crimp process on a yarn using a heated compressed fluid needs to include at least a jet nozzle and a stuffing member.

Such a jet nozzle is capable of ejecting the yarn forward together with a heated compressed fluid, and the jetting end of the nozzle can increase the expansion of the fluid and increase the open twill of all the single fibers constituting the yarn. It is desirable to have a shape like this. Further, the stuffing member is provided with a bleed hole capable of extracting a portion of the fluid ejected from the nozzle, and the step of extracting a portion of the fluid and actively forming a low-pressure area having a pressure lower than the pressure of the fluid. and a step of causing the yarn to weave in the low-pressure area with the rapid expansion of the ejected fluid, colliding with one end of the filled and deposited yarn formed by the already bulked yarn and depositing it. carrying out the yarn forward with a remaining fluid other than the extraction fluid and maintaining the yarn at a time and temperature sufficient for fusing the yarn and heat fixing buckling and crimp; Stuffing members having these structures are desirable, but are not particularly limited to, structures that include a cooling stage with a fluid at a temperature sufficiently low to promote stabilization of chicking and buckling. For example, it may be a stuffing member or the like having a structure in which threads can be deposited between endless belts that move in the same manner, or with a slit or a tubular member formed of a silk-like material or the like. On the other hand, in order to facilitate bulk processing, there is a method in which the supplied yarn is heated in advance using a hot roll, a heating plate, etc., or a heating device is installed in the stuffing member to prevent fusing, buckling, and crimp of the yarn. A method of sufficiently heat fixing is also an effective means, and a device having these functions may also be used.

Next, Fukurotaka will be explained in more detail using illustrated examples. FIG. 1 shows an example of an embodiment in which a fused crimped yarn can be produced by implementing the present invention.

Two yarns pulled out from packages 1 and 2 of high and low melting point yarns are supplied from yarn feeding rollers 3 and 4 to a jet nozzle 5, respectively, heated by a heater 6, and jetted into a stuffer pipe 7 together with heated steam. . At this time, by extracting a portion of the fluid through the pores 8 and forming a low-pressure area 9, the yarn is opened into constituent single fibers as the fluid rapidly expands. In this state, the yarn collides with the yarn mass 101 formed from the yarn that has already been bulked, and is continuously deposited in the stuffing pipe while being buckled. While carrying the mass forward, the thermal action of the fluid sufficiently fuses the threads and heat-fixes the buckling crimp. A low-temperature fluid is supplied from a cooling device 11 to the yarn core, and after cooling it sufficiently, it is taken up by a take-up roll 12 and wound up by a winder 13.
The purpose of providing two yarn feeding rolls in Fig. 1 is to vary the yarn feeding speed of the yarns when high and low melting point yarns are mixed, thereby changing the appearance of the resulting hammered curled yarn. In particular, by feeding a high-melting point yarn over a weekly length or an excessive length, it is also possible to obtain a warp yarn with a design effect such as neps or slabs. [Effects of the present invention] To illustrate the structure of the fused crimped yarn obtained by the present invention, the second
As shown in the figure, it is a bulky fused crimped yarn consisting of two components with different melting points, with the fused component yarn mainly forming the thin part 14 and the non-fused component yarn forming the sash part 15. , and has curly stripes, is non-torque, and has an excellent crisp feel and dry touch.

It also has a linen-like appearance. According to the method for manufacturing fused crimped yarn using the apparatus described above, fused crimped warp yarns having excellent properties can be easily manufactured with high efficiency and high productivity.

Example 1 Using the apparatus shown in FIG. 1, two types of yarns, a 70-denier 24-filament Naflon 6-filament yarn and a 24-filament nylon filament, were processed under the following conditions.

Processing speed: 50 m/min Heating steam: 190 qo x 5 k9/stuffing pipe diameter: 80 Side cooling fluid: Compressed air (room temperature) 2 k9/millimeter Take-up speed: 410 m/min Under the above conditions, inside the stuffing box The cooking time of the heating section is 5. The retention time of the nail sand in the cooling section was 4.6 seconds.

This value is in the range of more than 1 peep compared to the residence time of 0.4 seconds or less in the heating and cooling parts in the normal crimp method, which improves crimp stability and fusion strength. was gotten. The obtained fused crimped yarn is a non-rotating bulky yarn, and the thin part is mainly formed of fused nylon 6,
The sill part is made of nylon 66 with buckling stripes.
The yarn had a layered structure and had an excellent silky feel and dry touch.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an embodiment of the method for manufacturing a fused crimped yarn of the present invention, and FIG. 2 is a model diagram showing an example of the structure of a yarn obtained by the method for manufacturing a fused warp yarn of the present invention. It is. 1, 2... Supply package, 3, 4... Yarn feeding roll, 5.
... Jet nozzle, 6 ... Heater, 7 ... Stuffing pipe, 8 ... Yuzu pore, 9 ... Low pressure area,
10...Filled and deposited yarn material, 11...Cooling device,
12... take-up roll, 13 winder, 14... thin section, 15... sagging section. O diagram O 2 diagram

Claims (1)

[Claims] 1. In a method for producing a fused crimped yarn by aligning at least two types of yarns consisting of a high melting point fiber yarn and a low melting point fiber yarn, the melting point temperature is higher than that of the low melting point fiber yarn and the A heated compressed fluid having a temperature lower than the melting point of the melting point fiber yarn is ejected into the stuffing member, and the heated fluid guides the aligned yarn into the stuffing member, and then the yarn is deposited and filled. The low-melting point fiber yarn is fused and the high-melting point fiber yarn is given a forming crimp, and then sufficient heat is applied to fuse the yarn and stabilize the forming crimp. A method for producing a fused crimped yarn, which comprises cooling the yarn with a low-temperature fluid stream and pulling it out from a stuffing member.