JPS61252335A - Production of spun like filamnet - 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 [Industrial Field of Application] The present invention relates to a method of fluffing filament yarn to obtain spunlike filament yarn.

[Conventional technology]

Conventionally, the method of giving filament yarn a spun-like appearance is by taslan processing using pressurized air.
Loop fuzz is generated in some of the constituent fibers to give bulk processing and at the same time give an appearance effect.When using filament yarns with very weak single fiber strength, some single fibers may be cut by fluid processing. Although it is possible, the individual fuzz cutting is incomplete, the length is short, there are many loop fuzz, and fastening occurs on the fabric surface after knitting or weaving, and it is far from the texture of spun yarn. I was only able to obtain one that had a certain appearance.

In addition, many methods of stretching and cutting have been proposed, but all of them have low productivity and require large specialized machines, so they have not been realized.

In this way, pressurized air must be used to make filament yarn spunlike, and the resulting yarn shape is only one with loop fuzz remaining, processing speed is low, and processing cost is low. There were many problems, such as being expensive and being limited in the materials that could be used.

[Problem that the invention seeks to solve]

The present invention provides a method that can extremely easily achieve the spun-like appearance of multifilament yarn, which was extremely loose in conventional methods.

[Means for solving problems]

The present invention resides in a method for producing spunlike filament yarn, which is characterized in that the multifilament yarns are bundled in advance and then brought into contact with a grindstone of a rotating grinder under tension to cut and raise a portion of the multifilament yarns. .

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a process diagram showing an example of the present invention.

The multifilament yarns (1) and (2) are pulled out from the feed roller (3L (4)) and fed into the interlace nozzle (5) at an overfeed rate of 0 to 5%, and then transferred to the second feed roller (6) and (71). After taking it off, the interlaced multifilament yarn is brought into contact with the rotating grindstone (9) through the supply angle setting guide (8) in a tensioned state, and by the abrasive action of the rotating grindstone (9), the monofilament yarn constituting the multifilament yarn is removed. After cutting a part of the fiber and raising it, it goes through the take-out angle setting guide (10), the delivery roller (11), and the winder (13).
It is rolled up by the rotating cheese (14).

Interlacing in this case is simply a means of converging one or more multifilament yarns, and the degree of convergence is not particularly limited. It is also possible to use a focusing method such as a focusing method or a gluing method.

FIG. 2 is an enlarged schematic view of the yarn obtained by the method of the present invention, in which the filament bundle (Al is interlaced as a focusing means) and the fluff (A) in which some single fibers in the filament bundle (A) are cut. Configure at.

At this time, the density and length of the fluff are such that the fluff density is 2.5 mm in order to exhibit a spun-like appearance when knitted or woven.
It is preferable that the fuzz length (At) is 50% or more of the number of fuzz per 1 m of yarn length to be 10 n or more, and if it is less than this, the spun-like appearance will be significantly reduced.

[Effect]

FIG. 3 is an enlarged view of a portion of the grinder shown in FIG. 1, and its operation will be described.

The multifilament yarn (15), which has been bundled in advance by interlace processing or the like, is brought into contact with the rotating grindstone (9) through the supply angle setting guide (8) in a tensioned state, and the multifilament yarn is formed by the abrasive action of the rotating grindstone (9). A part of the single fiber is cut and raised, and the raised process is completed through the take-out angle setting guide (10).

In this case, the tension setting the tension state is 0 per denier.
．． 0.05P or more is required; if it is less than 0.05P, the napping effect will be extremely poor.

In addition, the supply angle (θ, ) of the supply angle setting guide (8) to the rotary grindstone (9) should be in the range of 5 to 45° to the perpendicular (cl) from the point of application (bl) of the grindstone (9). In order to make the napping effect more effective, it is preferable that the angle is less than 5°, the elongation of the bundled multifilament yarn (15) will cause escape, and the nap will become patchy, and at the same time the density will be extremely reduced. If the feeding angle exceeds , the contact resistance will increase extremely and the raising effect will be great, but the strength will drop significantly and the process stability will be poor. However, when mixing multifilament yarn with extremely high single fiber strength, Feeding angle (
0 m) can be made even larger.

Similarly, the take-out angle (θ,) of the take-out angle setting guide (lO) from the grinding wheel (9) is determined by the point of action (b) of the grinding wheel (9).
) is preferably in the range of 5 to 45° with respect to the perpendicular (cl) in the same sense as the feeding angle (θ, ).

Further, the direction of rotation of the grindstone (9) is not particularly limited, but it is more preferable to rotate it in the direction opposite to the running direction of the yarn from the viewpoint of napping properties.

Further, although the rotational speed of the grindstone (9) varies somewhat depending on the processing speed, at least the surface speed of the grindstone needs to be faster than the thread processing speed. In addition, if the rotation direction of the grindstone (9) is the same as the running direction of the filament thread, the grindstone (9)
It is necessary to make the surface speed at least twice as high as the napping property.

In addition, the grain size of the grindstone (9) used is a round grindstone grain size of 120 grit or less, which gives good results for the raising effect.

〔Example〕

The present invention will be explained below with reference to Examples.

Example Based on the process diagram shown in Fig. 1, polyester filament 150d/48f, reacetate filament 200d/34f, acrylic filament 300d/4
Using 0f, focusing by interlace processing and running contact with the grindstone were carried out using the combinations shown in the following table under the conditions shown in the following table, and the results are shown in the table. Note that 111kL3 has been subjected to convergence by actual twisting instead of interlace processing.

〔Effect of the invention〕

According to the present invention, it is possible to perform high-density raising and fluffing on multifilament yarn using an extremely simple device, and it is also possible to generate long fluffs that could not be obtained with conventional techniques. This change allows for arbitrary selection of the density, making it possible to obtain a yarn suitable for flat knitting, and it has excellent features.Furthermore, it does not require high-pressure processing air unlike the conventional technology. This enables high-speed span-like processing and is also effective in reducing costs.

[Brief explanation of the drawing]

FIG. 1 is a process diagram of an example of the present invention, FIG. 2 is an enlarged schematic view of a yarn obtained by the method of the present invention, and FIG. 3 is an enlarged view of a portion of the grinder in FIG. 1. 1.2...Multifilament yarn, 3,4...1st
Feedrow 2-15...Interlace nozzle, 6
, 7... Second feed roller, 8... Supply angle setting guide, 9... Grindstone, 10... Take-out angle setting guide, 11.12... Delivery roller, 13...
・Wine goo, 14... Cheese, b... Point of action of the grindstone, C... Perpendicular to the point of action, θ1... Supply angle,
θ,...take-out angle, 15...Focused multifilament thread

Claims (1)

[Claims] A method for producing spunlike filament yarn, which is characterized in that the multifilament yarns are bundled in advance and then brought into contact with a grindstone of a rotating grinder under tension to cut and raise a portion of the multifilament yarns.