JPH0280631A - Processed combined filament yarn and production thereof - Google Patents

Abstract

PURPOSE:To impart a yarn with shading effect and unique color effect in the direction of length by using a multifilament yarn containing undrawn parts and drawn parts alternately distributed along the length of the yarn and a false-twisted yarn having dyeability or color different from that of the former yarn and blending both yarns in a specific state. CONSTITUTION:A multifilament yarn A containing undrawn parts and drawn parts alternately distributed along the length of the yarn and a drawn yarn B having dyeability or color different from that of the former yarn and having almost uniform physical properties along the length are false-twisted by a heater 5 and a spindle 6, etc. Subsequently, the false-twisted yarn is imparted with 40-200 entanglements per 1 meter by a fluid entanglement nozzle 8 to obtain the objective combined filament yarn composed of the multifilament yarns A and B wherein at least one of the yarns A and B has 8-30 twists or entanglements per 1 meter.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention provides a unique color effect in the longitudinal direction of the yarn through shading and different color mixing, as well as a dry spun touch and a bulky texture effect, and can be used in subsequent processes. The present invention relates to a mixed fiber processed yarn that is easy to handle and a method for producing the same.

(Prior art) False-twisted yarn with a degree of dyeing in the longitudinal direction of the yarn was developed in
-27387.5 (3-11766,59-20003
It is well known for. However, in this type of processed yarn, only the multifilaments that have structural differences in the longitudinal direction of the yarn are false-twisted, so the less oriented parts are deteriorated during the false-twisting process, winding, twisting, weaving, etc. Filament breakage is likely to occur in the subsequent process, and only a relatively monotonous color effect can be obtained because there is only a difference in shading in the longitudinal direction.

Therefore, in order to improve the false twisting processability, the passability of the post-process, and the color effect, false twisting was carried out by aligning multifilament yarns with almost uniform properties in the longitudinal direction (Japanese Patent Publication No. 61 -39413, JP-A-55-93823, etc.), combinations of multifilament threads dyeable with ionic dyes and multifilament threads undyable with ionic dyes (Japanese Patent Publication No. 55-45653, etc.), Various methods have been proposed, such as combining drawn yarns and subjecting only one side of the yarn to a drawn false twisting process under conditions where the degree of dyeing differs in the longitudinal direction of the yarn (Japanese Patent Application Laid-Open No. 118434/1983).

However, in these methods, due to the difference in physical properties of the combined yarns, the multifilaments separate, significantly impeding the processability of twisting, sizing, weaving, knitting, etc., and multifilament yarns that can be dyed with ionic dyes. Problems include poor mixing (melting) of undyed and undyed multifilament yarns, resulting in only a woodgrain effect, and the simultaneous stretching and false twisting process, which reduces the difference in dyeing in the longitudinal direction. However, it was not possible to titrate any of them.

(Problems to be Solved by the Invention) The present invention provides a mixed fiber processed yarn that does not have such problems, that is, it provides a shading effect and a unique color effect in the longitudinal direction of the yarn, has a dry touch and excellent bulkiness, and is a twisted yarn. An object of the present invention is to provide a mixed fiber processed yarn having good passability through post-processes such as woven fabrics, and a method for producing the same.

(Means for Solving the Problems) In order to solve the problems, the present invention has the following configuration. That is, the present invention provides a multifilament yarn A1 consisting of filaments that alternately include undrawn and stretched portions at least in the longitudinal direction of the yarn. The yarn is made of a twisted yarn containing a drawn multifilament yarn B made of thermoplastic filament that grows
The number of twists or the degree of entanglement is 8 to 30 twists/m to at least one of the multifilament yarn A and the drawn multifilament yarn B. A blended processed yarn that has been subjected to a real twist of 1000/J turns/m or more to this blended processed yarn or together with other yarns, at least an unstretched part and a stretched part in the longitudinal direction of the yarn. A multifilament yarn A consisting of alternating filaments; At least one of the drawn multifilament yarns B is twisted at 8 to 30 pieces/m, or after false-twisting a plurality of intertwined multifilament yarns, the number becomes 40 to 200 pieces/m using a fluid entangling nozzle. intertwined like this,
This is a method for producing a mixed fiber textured yarn, which is characterized in that the processed yarn is then threaded together with other yarns at a rate of 100 a/@times/m or more. Here, D is the thickness (denier) of the mixed yarn.

The present invention will be explained in detail below.

First, there is a multifilament yarn A consisting of filaments that alternately include unstretched portions and stretched portions in the longitudinal direction of the yarn, and A is a drawn multifilament yarn that is discolored or has a different color and has almost uniform properties in the longitudinal direction of the yarn. Containing B provides a special color effect that combines the heathered marbling effect due to different dyeing or different colors and the shading effect of the unstretched and stretched areas, and the unstretched areas harden and dry due to the obvious false twisting process. In addition, since a drawn yarn is used, the false twisting processability and passability in subsequent processes are also improved.

For this purpose, a multifilament yarn A, preferably a polyester multifilament yarn, has a birefringence index of 18X10-' to 25X10-'% in the stretched part.
Folding IK Gt 140X10-' -180X10-
”, UR% power is 40-60%, P value is 5-20 cases/m
A polyester multifilament yarn of about 100% is preferred.

Such multifilament yarn has a winding speed of 180
It can be easily obtained by drawing an undrawn yarn spun at a speed of 0 to 3000 m/min at a natural draw ratio of about X (1.0 to 1.05).

Here, the degree of entanglement is measured by the number of entanglements over 1 meter when the processed yarn is submerged in running water, and the birefringence is the degree of polarization observed on the side of the fiber using an optical microscope and compensator. I asked for more.

For UR% and P value, a chart was drawn using an Evenness Tester Model C manufactured by Zellbaker, and the number of samples whose UR% monotonically increased by 10% or more from the highest and lowest values was determined as the P value. The drawn multifilament yarn B is a thermoplastic multifilament yarn with a different color or discoloration from the multifilament yarn A, and is a thermoplastic multifilament yarn with a different color or discoloration, such as spun-dyed thermoplastic multifilament yarn such as polyester, polyamide, etc. Plastic multifilament yarn, e.g. 5
- Polyester fibers, polyamide fibers, etc. that can be dyed with ionic dyes containing sulfonate metal salts are used.

Here, the multifilament yarn B needs to have substantially uniform physical properties in the longitudinal direction of the yarn.

This is because the multifilament yarn A contains undrawn portions and is therefore inferior in physical properties, so at least the multifilament yarn B must have substantially uniform physical properties in the longitudinal direction of the yarn. Further, as an example of a multifilament yarn made of filaments including unstretched portions in the longitudinal direction of the yarn, it is preferable that the yarn be undyed with polyester multifilament dyes for the following reason.

In other words, general polyethylene terephthalate) J! Ill
In order to make polyester fiber dyeable with ionic dyes, a third component such as 5-sulfonate metal salt is copolymerized or blended, which deteriorates the physical properties of the polyester fiber itself, but this tendency is particularly large in the undrawn part, and temporary Because sufficient heat setting was not possible during the twisting process, only products with poor crimp properties were obtained. Furthermore, even when false-twisting was performed at low temperatures, the filaments in the unstretched portions were easily cut, significantly impairing operability. In addition, filament breakage is likely to occur during interlacing, twisting, and weaving processes, which poses problems in process passability, and the resulting fabric has nebb-like defects on its surface, deteriorating its appearance and quality. On the other hand, with polyester fibers that are undyed by ionic dyes, if conditions such as false twisting temperature are adjusted according to the degree of orientation of the unstretched part, there is no particular problem even in the unstretched part, and post-processing including interlacing Polyester multifilament yarn consisting of filaments including unstretched portions is preferable because there is no problem with the passage of the fibers. Furthermore, the polyester fibers that are not dyed with ionic dyes are those whose main component is ethylene terephthalate. Next, the polyester multifilament yarns A and A, which alternately include unstretched portions and stretched portions in the longitudinal direction of the yarn, are different from polyester multifilament yarns A and A that have unstretched portions and stretched portions alternately in the longitudinal direction of the yarn.
The number of twists or degree of entanglement of 30 twists/m exists because these multifilament yarns are not completely mixed. It is well known that a fluid entangling nozzle entangles and mixes multiple multifilament yarns, but if the mixing of the multifilament yarns becomes too high, the multifilament yarns A and B will become mixed together, especially later. There is a problem that when the yarn is twisted, it only looks like a mixed yarn, so in the present invention, at least one multifilament yarn among the AlB multifilaments is twisted or intertwined at a rate of 8 to 30 pieces/m, so that the twisted yarn or intertwined part The threads are not mixed, but the integrated parts and the individual multifilament threads appear, creating a desirable color effect.

In addition, after false twisting these multifilament yarns, they are then processed using a fluid entangling nozzle at a rate of 40 to 200 pieces/m.
What is confounding with this is Maru. This is to mix the multifilament yarns appropriately to obtain the above-mentioned preferable color effect, and to improve the passability in subsequent processes by integrating them as a multifilament yarn.

In other words, at least the multifilament yarn A1B mentioned above is pulled together and subjected to false twisting at the same time.As mentioned above, multifilament yarn consisting of filaments including unstretched portions, for example, polyester multifilament yarn A, is unstretched when false twisted alone. This is because the parts are easy to cut, which tends to cause problems in workability and yarn quality.As in the present invention, by using a multifilament drawn yarn with uniform physical properties in the longitudinal direction and simultaneously drawing and false twisting, the false twisting process is easy. Most of the tension is carried by the drawn yarn, and damage to the polyester multifilament yarn including the unstretched part is significantly reduced, and since almost no stretching occurs in the undrawn part, dyeing (shade difference) between the undrawn part and the stretched part is improved. is well preserved.

In addition, if the number of entanglements is less than 40/m, it will easily separate into individual multifilament yarns when tension is applied in the subsequent process, and even one culm of twisted yarn will easily cause problems, and the mixing of the constituent multifilament yarns will be poor, resulting in poor tensile strength. It will only have a uniform wood grain. Moreover, if the number exceeds 200 pieces/m, unstretched parts or parts with weak tension are likely to be cut off by the fluid entangling nozzle, resulting in fluffing, and the degree of mixing becomes too high, so both are excluded from the present invention. Next, the yarn is twisted at 1000/m or more in combination with other yarns.The reason for twisting the yarn is 5 times/m or more in order to provide the mixed fiber processed yarn with post-process passability, ease of handling, and uniformity of the mixed state, as well as to provide a dry touch due to twisting. It is.

In particular, by interlacing and twisting the yarn after false twisting, an unprecedented, subdued color effect can be achieved. Also, by twisting the yarn, you can control everything from heather to marbled. However, if the number of twists is too high, a mixed color tone will result, and in the mixed fiber textured yarn of the present invention, the number of twists is preferably about 5000 turns/second/m, although it depends on the number of entanglements.

Next, the present invention will be explained in more detail using figures. FIG. 1 is a schematic diagram of a false twisting machine suitably used in the present invention.

2. Polyester multifilament yarns A and A having alternating unstretched portions and stretched portions in the longitudinal direction of the yarn are different dyed, or drawn yarn B having a different color and approximately uniform physical properties in the longitudinal direction of the yarn. After adjusting the tension at step 2', false twisting is simultaneously performed between the feed roller 4 and the delivery roller 7 using the spindle 6 and the heater 5.

The pre-combustion processing conditions here vary depending on the degree of orientation of the undrawn part of the polyester multifilament yarn including the undrawn part, and the required crispness, dry touch, bulkiness, etc. 25.000
The preferred range is approximately 30,000/positive. Next, the main processed yarn and other yarns C are combined as necessary so that the number of entanglements is 40 to 200 times/m using the fluid entanglement nozzle 8 between the delivery roller 7 and the second delivery roller 9. is confounded by

The fluid entangling nozzle used here is
A publicly known one such as No. 30 may be used.

In addition, the other yarn C may be the same processed yarn as this processed yarn,
Ordinary false twisted yarns, drawn yarns, spun yarns, etc. can also be used as needed.

The thus intertwined mixed yarn is wound around a cheese 11 driven by a drum 10.

Then, the processed yarn alone or in combination with other yarns is twisted at a rate of 100/Jm-turns/m or more using a general twisting machine to produce the mixed fiber processed yarn of the present invention. Note that PA and PB are packages, and 1.1' and 3.3' are guides.

(Example) Examples 1 to 2, Comparative Examples 1 to 5 Polyester multifilament yarn A 75 denier 36 filament Unstretched part birefringence 25X10-' Stretched part /J /√D0X10-'UR (%)
56 P value 9.5/m Multifilament yarn B Basic dye dyeable polyester/√D0 denier 48 filament was used and evaluated in the examples and comparative examples on the next page.

The false twisting processing conditions are a partially modified LS-El type manufactured by Mitsubishi Heavy Industries ■, and an interlacer installed in the secondary heater area: spindle rotation speed 200 + OOOrp me twist number 18
507/M1 heater temperature 180°C, feed ratio +1.
At 5%, the interlacer air pressure and opening feed ratio were changed.

Examples 1 and 2 had good heathered state, touch, feel, fluff, and handleability, but Comparative Example 1 had too high a heather finish due to the small number of twists of the multifilament, resulting in a mixed color.

On the other hand, in Comparative Example 2, the number of twists of the multifilament was high, so the heathered period appeared, which was not good.

In Comparative Example 3, since the number of entanglements was small, the period of heathering was noticeable like Comparative Example 2, and the threads of the twisted yarn were separated, which caused problems in handling.

In Comparative Example 4, the number of entanglements was too high and the fluid pressure at the time of entanglement was high, resulting in fluff and problems in handling. Also, because the degree of entanglement was too high, the mixing of the multifilaments progressed too much, resulting in mixed colors.

In Comparative Example 5, the number of twists was small, so the difference between the weights of the heather was noticeable. In addition, the threads tend to separate, resulting in problems in handling, and there are also problems with touch, texture, haze, and bulkiness.

(Effects of the Invention) According to the present invention, the yarn has a shading effect and a unique color effect in the longitudinal direction, has a dry touch and has excellent bulkiness,
Moreover, a remarkable effect is achieved in that mixed fiber processed yarns having good passability through post-processes such as twisted yarns and woven fabrics can be easily obtained.

[Brief explanation of the drawing]

FIG. 1 is a side view of an apparatus for manufacturing a mixed yarn of the present invention. 4...Feed roller 7...Delivery roller 8...Fluid entangling nozzle, 9...Second delivery roller $12 Patent applicant Toyobo Co., Ltd.

Claims (1)

[Claims] 1. A multifilament yarn A consisting of filaments that alternately include unstretched portions and stretched portions at least in the longitudinal direction of the yarn;
The multifilament yarn A is a twisted yarn containing a drawn multifilament yarn B, which is a thermoplastic filament that is different dyed or has a different color and has properties that are almost uniform in the longitudinal direction of the yarn. 40-20 for thread
A degree of entanglement of 0 pieces/m exists, and at least one of the multifilament yarn A and the drawn multifilament yarn B is given a number of twists or a degree of entanglement of 8 to 30 pieces/m. A mixed fiber processed yarn. 2. A mixed fiber processed yarn characterized in that the mixed fiber processed yarn according to claim 1 or together with other yarns has been subjected to an actual twist of 1000/√D times/m or more. However, D is the thickness of the mixed yarn (
denier). 3. Multifilament yarn A consisting of filaments that alternately include unstretched parts and stretched parts in the longitudinal direction of the yarn, and A is a thermoplastic stretched yarn that has discoloration or a different color and has almost uniform properties in the longitudinal direction of the yarn. It contains at least a multifilament yarn B, and at least one of the multifilament yarn A and the drawn multifilament yarn B has 8 to 30 pieces/
After false twisting multiple multifilament yarns twisted or entangled at m, a fluid entangling nozzle is used to
The yarn is intertwined at a density of 200 pieces/m, and then the processed yarn is
Or, a method for producing a mixed fiber processed yarn characterized by twisting the yarn together with other yarns at a rate of 1000/√D times/m or more. However, D is the thickness (denier) of the mixed yarn to be twisted.