JP2680019B2 - Spun yarn for moquette fabric pile - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a spun yarn for moquette fabric pile.

(Prior Art) Conventionally, spun yarn has been used for a nap (pile) of a moquette fabric. The advantage of using spun yarn for napped hair is that napped hair with an extremely high density is easily obtained because the spun yarn is composed of many fibers. However, when spun yarn is used for the naps of moquette fabric, there are also drawbacks.
One of the drawbacks is that the napped fiber has a twist because the spun yarn is composed of short fibers and is provided with a sizing property by twisting.

This twisting is a problem because it is difficult to arrange the naps of the moquette fabric in a certain direction, and as a result, it is possible to prevent the formation of a bathochromic and aesthetic surface.

In particular, when polyester fiber is used as the short fiber,
Due to its good heat-fixing properties, the polyester spun yarn that has undergone the heat setting or yarn dyeing process has the drawback that the above twist is easily imparted and that the twist is extremely difficult to remove. Was there.

Moquette fabrics are obtained by making double velvet weaves and cutting pile yarns, but as yarns for naps, there are many cases in which yarn-dyed spun yarns are used, so using polyester spun yarns poses a problem. It was great.

On the other hand, a polyester composite spun yarn in which a long fiber yarn is wound around a bundle of substantially untwisted short fibers is disclosed in Japanese Patent Publication No. 59-11695.
No. 6,086,045. However, this composite spun yarn merely enables spinning at a speed 5 to 10 times higher than that of a conventional ring spinning method. In this publication, such a composite spun yarn is used for a pile yarn of a moquette fabric. There is no description about the boiling water shrinkage, elongation, silk factor, etc. of the long fiber yarn used.

(Object of the Invention) An object of the present invention is to solve the conventional problems and to propose a spun yarn for a moquette fabric pile, which enables formation of an aesthetic moquet fabric napped surface.

(Structure of the Invention) The present invention is a composite spun yarn in which a polyester long fiber yarn is wound around a polyester single fiber bundle in a spiral shape, wherein the polyester short fiber bundle is substantially untwisted, and The polyester long fiber bundle, which occupies 10 to 45% by weight of the whole spun yarn, has a low shrinkage property with a boiling water shrinkage ratio of 6% or less, and has an elongation of 12 to 24% as a strong elongation property and a silk factor S. In the range of 26 to 30 is preferable, and a spun yarn for moquette fabric pile, wherein the polyester short fiber bundle contains short fibers having an atypical cross-sectional shape is preferable. As a specific example of the cross-sectional shape, for example,
There is a staple fiber having a degree of variation (Y) represented by the following formula within the range of 0.1 to 0.3.

Y = D / E Short fibers having such a degree of atypicalness (Y) are
The content of 30 to 80% by weight is shown.

Furthermore, as another example, the cross section has a flat shape, parallel to the major axis direction of the flat shape, has a wedge portion, and
The constriction degree (K) represented by the following formula is a short fiber in the range of 1.1 to 1.5.

K = 1 / m That is, FIG. 3 is a cross-sectional view for explaining the constriction degree (K) used in the present invention. The cross section has a flat shape as a whole, and has a constricted portion along the major axis direction. The distance l between the outer tangent lines and the m between the inner tangent lines are measured as shown in the figure to obtain K.

It is shown that polyester short fibers having such a degree of constriction (K) are contained in an amount of 30 to 100% by weight of the whole short fiber bundle.

The spun yarn of the present invention is a composite spun yarn obtained by winding a polyester long fiber yarn around a polyester short fiber bundle in a spiral shape, and is manufactured by the process shown in FIG. First
In the figure, a polyester short fiber bundle 2'is supplied from the short fiber bobbin 1 to the draft device 3 to have a desired thickness,
The polyester filament fibers 6 drawn out from the long fiber bobbin 5 which rotates integrally with the rotating hollow spindle 4 and the short fiber bundle 2 are compounded, and passed through the hollow portion of the hollow spindle. The polyester continuous fiber yarn 6 is wound around the package 8 as a composite spun yarn 7 wound in a spiral shape. Reference numeral 9 is a take-up roller.

In the thus obtained composite spun yarn, as shown in FIG. 2, the polyester short fiber bundle 2 is in a substantially non-twisted state (50 T / M or less even if there is an apparent false twist). A polyester long fiber yarn 6 around the short fiber bundle 2.
Is a spiral wound form (FIG. 2 is a side view showing the form of the spun yarn of the present invention).

The mixing ratio of the polyester continuous fiber yarn 6 accounts for 10 to 45% by weight of the whole composite spun yarn, and if the mixing ratio is less than 10% by weight, the composite spun yarn cannot be provided with sufficient strength and elongation. If the mixing ratio exceeds 45% by weight, the feature of the non-twisted short fiber bundle cannot be utilized.

Furthermore, the polyester filament fibers have a boiling water shrinkage of 6%.
It is important that the following low shrinkage properties, elongation at break is 12 to 24%, and silk factor S is in the range of 26 to 30.

The silk factor S is defined by the following formula.

Further, when the polyester long fiber yarn is wound around the polyester short fiber bundle as described above, the number of windings is preferably as small as possible. Therefore, as the winding coefficient α, those having 2.0 ≧ α ≧ 4.0 are effectively used. However,
The winding coefficient α is Indicated by.

The polyester short fiber bundles and the polyester long fiber bundles are not only regular polyesters containing polyethylene terephthalate as a main repeating unit, but also modified modified dyes having easy dyeability and cationic dye dyeability. Good.

(Operation of the invention) Since the spun yarn of the present invention is a composite spun yarn obtained by winding a polyester long fiber yarn around a substantially untwisted polyester short fiber, when used in a pile of a moquette fabric,
Distortion of pile fibers due to twisting, which has been a drawback in the past, is eliminated and the pile fibers are arranged in a fixed direction, and as a result, an aesthetic pile surface is obtained. In particular, even polyester short fibers having a high heat setting property can be used even if a heat process such as a yarn dyeing process is involved because the drawback of the twisting is solved.

However, when such a composite spun yarn is used in a pile of moquette fabric, it has been found to have another problem. That is, as the known means, a moquette fabric is made into a double velvet fabric to cut pile yarns. The pile yarn is cut using a cutter,
After the cutting, shearing may be performed to align the hands again, but in any case, when the pile yarn is cut, an untwisted polyester short fiber bundle and a short fiber bundle are wound around the short bundle. Since the polyester continuous fiber yarns described above have different cutting performances, the polyester continuous fiber yarns disturb the arrangement of pile fibers, and there is a problem that the aesthetics of the pile surface is impaired. In particular, when the boiling water shrinkage rate of the polyester filament fiber yarn exceeds 6%, the polyester filament fiber yarn shrinks greatly at the time of dyeing the yarn, resulting in large tightening of the polyester staple fiber bundle, which may cause stain unevenness. However, the filament yarn of the moquette fabric is not easily detached, and an aesthetic pile surface cannot be obtained. When the elongation of the polyester filament yarn exceeds 24%, it is difficult to cut the pile yarn, and the pile fibers are disturbed by snap back and the like, and the aesthetic pile surface cannot be obtained in the same manner.

Furthermore, since the composite spun yarn used in the present invention is composed of the untwisted polyester short fiber bundle and the wound polyester long fiber yarn, the polyester long fiber yarn 6 is contained in the moquette fabric as shown in FIG. It tends to be longer than the pile fiber formed by the polyester short fiber bundle 2 (FIG. 4 is a side view schematically showing the pile of the moquette fabric using the spun yarn of the present invention).

For the above reasons, it is difficult to unnecessarily increase the shrinkage rate of the polyester filament fiber thread, so that it is difficult to shrink the polyester fiber and solve this problem. For this reason, a shearing treatment is carried out if necessary, and this shearing property can be improved by using the elongation of the polyester filament fiber yarn within the range specified in the present invention and the silk factor S.

The spun yarn of the present invention has a great effect when short fibers having an irregular cross section are included in the polyester short fibers, but in particular, polyester short fibers having a flat cross section as shown in FIG. 3 are used. In that case, the effect is great. That is,
In the case of a real twist spun yarn composed of flat-shaped fibers, since the flat-shaped fibers are twisted and the fibers are twisted and disturb the arrangement of the pile fibers of the moquette fabric, it cannot be used in the real twist spun yarn at all. The spun yarn of the invention makes it possible to form moquette fabric piles with selected aesthetics.

(Example 1) Polyester short fibers (circular cross section) 1.5 de x 51 mm were used as the fibers constituting the polyester short fiber bundle, and the sliver of the second drawing process of 200 Genon / 6 yards was passed through a known spinning process. On the other hand, as polyester filament, polyester denier filament 50 denier x 24
Using filament (boiling water shrinkage rate 2%, silk factor (S) = 25, elongation 14%), the number of windings of polyester filament is 13.5 times / 2.54 cm, and the number of rotations of spindle 4 is 25,000 rpm by the process shown in FIG. Then, the count: Ne20 composite spun yarn was obtained. The composite spun yarn had a tenacity of 915 g and a boiling water shrinkage ratio of 1.2, and this yarn was used for yarn dyeing. The yarn-dyed spun yarn had no unevenness in dyeing and did not cause wall twist, and retained an excellent form.However, this yarn was used as a pile yarn to weave a moquette fabric with a moquette loom manufactured by Goosen Co. When the woven fabric was fluffed and shaved in the finishing process to obtain a moquette woven fabric having a predetermined appearance, a fabric having a graceful pile surface excellent in napping property and shearing property was obtained.

Example 2 As a polyester short fiber bundle, the degree of cross-section variation (Y) was
Y = 1.0 atypical cross section (triangular cross section) polyester short fiber (3de x 64-89mm bias cut, mixing ratio 30%) and circular cross section polyester short fiber (2.5de x 64 ~ 89mm bias cut, mixing ratio 70%) And using a known worsted spinning process to make 180 genon / 6 yards second sliver sliver, while polyester filament fiber 50 denier x 24 filaments (boiling water shrinkage 2.5%, silk factor (S) = 27, elongation 18%), and by the same process as in Example 1, the number of windings is 14.1 times / 2.5.
A 4 cm composite spun yarn was obtained (count: Ne20).

A moquette fabric was produced from this spun yarn in the same manner as in Example 1 and evaluated. The obtained moquette fabric had an aesthetic pile surface as in Example 1, but the elastic recovery rate of the pile was particularly good, and the texture was wool-touch.

(Example 3) Constriction degree (K) in cross section as a polyester short fiber bundle
Is a polyester short fiber 2.5 having a flat cross section of K = 1.2
200 x genon / 6 through a known spinning process using de x 51 mm
Not used as a sliver in the second drawing process of the yard. On the other hand, as polyester filament yarn, polyester multifilament yarn 70 denier x 36 filaments (boiling water shrinkage of 2.0
%, Silk factor (S) = 26, elongation 22%),
By the same process as in Example 1, a composite spun yarn with a winding number of 13.8 times / 2.54 cm was obtained (count: Ne = 20).

A moquette fabric was produced from this yarn and evaluated in the same manner as in Example 1. The obtained moquette fabric had an aesthetic pile surface as in Example 1, but
In particular, one of the disadvantages of the pile surface, which is one of the shortcomings, is a white mottle phenomenon, and a moquette fabric having a deep color is obtained.

[Brief description of the drawings]

FIG. 1 is a process diagram for explaining a process for producing a spun yarn of the present invention, and FIG. 2 is a side view showing a form of the spun yarn of the present invention,
FIG. 3 is a cross-sectional view for explaining the constriction degree (K) of a modified cross-section fiber that can be used in the present invention, and FIG. 4 is a side view schematically showing a pile of a moquette fabric using the spun yarn of the present invention. It is a figure. 2,2 ′ …… Polyester short fiber bundle 6 …… Polyester long fiber yarn 7 …… Composite spun yarn

Front page continuation (56) Reference JP-A-57-61727 (JP, A) JP-A-58-13747 (JP, A) JP-B 59-11695 (JP, B2) JP-B 60-42288 (JP , B2) JP 62-7294 (JP, B2) JP 62-1032 (JP, B2)

Claims (2)

(57) [Claims] 1. A composite spun yarn in which polyester long fiber yarns are helically wound around a polyester short fiber bundle, wherein the polyester short fiber bundle is substantially non-twisted, and The polyester continuous fiber yarn, which accounts for 10 to 45% by weight, has a low shrinkage property with a boiling water shrinkage ratio of 6% or less, and has a high elongation property of 12 to 24% and a silk factor S of 26 to 30. A spun yarn for a moquette fabric pile, characterized in that 2. The spun yarn according to claim 1, wherein the polyester staple fiber bundle contains staple fibers having an atypical cross-sectional shape.