JP2759205B2 - High density fabric - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION {Field of Industrial Application} The present invention relates to a high-density fabric having a soft, span-like feel made of synthetic fiber multifilament yarn.

<< Conventional Technology >> Synthetic fibers used for clothing can be said to be a history of the development of how natural fibers and appearances of natural fibers such as silk, wool, cotton, and hemp can be brought close to date. Among them, the development of woven fabrics with span-like texture and appearance by synthetic fiber filament yarn is approached by so-called span-like processing technology such as temporary twisting of multi-filament yarn, composite temporary twisting with yarn foot difference, and composite blending. Have been.

In recent years, as a method for obtaining a softer feeling or a span-like appearance than in the past, a method using a mixed entangled mixed yarn or a composite entangled mixed yarn using a very fine yarn as a weft of a woven fabric has been proposed. Many have been proposed.

The entangled mixed yarn is usually performed by Taslan processing, and open loops and closed loops are mixedly formed on the surface of the yarn,
In textiles, a more spun-like appearance is imparted,
Further, it is known that a soft feeling can be obtained by making the fibers extremely fine.

｝ Problems to be solved by the invention｝ In entangled mixed yarn, increasing the number of open loops and closed loops improves the touch of the fabric and improves the span feeling, but there are restrictions on handling and passability in the weaving process Although wefts can be used in a relatively wide range, there is a limit in using them for warps.

Further, if the surface has many loops, the feeling is improved, but on the other hand, a defect such as a zipper phenomenon and dust easily adhere to the surface tends to occur. Increasing the density of the fabric even with the same degree of loop tends to improve those disadvantages.However, if there are many open loops and closed loops, there will be many troubles in the weaving process, especially the use for warp will be limited. there were.

The object of the present invention is to pay attention to the above-mentioned conventional problems, and to use an entangled mixed yarn having an open loop and a closed loop as a warp of a woven fabric, to provide a high-density woven fabric having a high-density, soft feeling and a feeling of span. It will not be provided.

<< Means for Solving the Problems >> The present invention has the following configuration to achieve the above object. That is, at least the open loop made of synthetic multifilament yarn in the warp, a woven fabric having the open loop and the closed loop on the surface using the interlaced mixed yarn mixed with the closed loop,
The open loop and the closed loop are an open loop and a closed loop that are revealed after weaving using a latent loop yarn in which the expression of the loop is latentized, and the number of loops protruding from the surface by 0.6 mm or more is 50 pieces / m or more. Wherein the warp cover factor of the woven fabric is 1100 or more.

In the present invention, the number of loops in which the latent loop yarn projects 0.15 mm or more from the yarn surface is 300 or more, 0.3
The number of loops protruding 5 mm or more is 50 pieces / m or more, and 0.6 mm
The warp has a fine loop of 10 / m or less, and the warp synthetic fiber multifilament yarn has at least two kinds of shrinkage rates of boiling water of 10% or more.
It is preferable to use the above-mentioned hetero-shrinkage entangled mixed yarn.

And the above-mentioned synthetic fiber multifilament yarn of the warp is preferably at least two or more kinds of different shrinkage entangled mixed yarn.

 Hereinafter, the present invention will be described in more detail.

By using an entangled mixed fiber yarn in which open and closed loops composed of synthetic fiber multifilament yarn are mixed in the warp, the open loop and the closed loop are mixedly located on the surface of the woven fabric, and the surface loop is a spun yarn as a tactile sensation. At the same time as the feathers, and at the same time, the arrangement of the multifilament yarns constituting the warp and the weft is disturbed.

And, as the single yarn denier constituting the multifilament is smaller, a softer hand can be obtained.

Also, using entangled mixed yarn, open loop on the surface of the fabric,
In order to give the feel and appearance of a soft span feeling by mixing closed loops, to give a moderate firmness and firmness, and to reduce problems such as the zipper effect and dust adhesion due to loops, it is necessary to increase the density is necessary.

The density of the woven fabric must be 1100 or more after the dyeing and finishing process, using open- and closed-loop entangled mixed yarns. The cover factor is preferably 1600 or less.

When the cover factor of the warp is 1100 or more, as described in detail later, when weaving using entangled blended yarn with a mixture of open loop and closed loop for the warp of the woven fabric, the warp loop and tarmi At the time of opening, the adjacent contacts repeatedly contact with each other, resulting in unevenness, poor opening and poor flight of the weft, resulting in poor production efficiency and a quality that cannot be obtained at a normal production level.

In the present invention, in order to improve this point, an entangled mixed fiber in which an open loop and a closed loop are mixed is produced by subjecting two or more types of multifilaments having different shrinkage rates to fluid turbulent flow processing, and the boiling water shrinkage rate is reduced. That's more than 10%. And unlike ordinary loop turns, it is used as a latent loop yarn to improve the passability of the weaving process, enabling weaving at a relatively high density compared to conventional loop yarns, and relaxing in the dyeing process By shrinking by heat treatment in a free state such as treatment, the density can be increased and a loop can be developed at the same time.

That is, according to the present invention, a high-density woven fabric can be obtained relatively easily even if an interlaced mixed yarn in which an open loop and a closed loop are mixed is used for the warp.

And by making the expression of the loop latent,
The warp of the woven fabric,
At the intersection of the wefts, there is little occurrence of loops, and the surface state is milder than that of loop yarns obtained by ordinary fluid turbulence treatment.

It is well known that the texture of a woven fabric has a large effect of the warp in an ordinary general structure.

Furthermore, by using the same latent loop yarn as the warp for the weft, a high-density woven fabric using warp and weft loop yarns is possible. It is superior to the one using the loop yarn subjected to the normal fluid turbulence treatment.

In addition, the weft is composed of two or more kinds of multifilament yarns having different shrinkage ratios, and uses a different shrinkage mixed fiber yarn having a boiling water shrinkage ratio of 10% or more as a whole, or a shrinkage ratio of a boiling water shrinkage ratio. May be as low as 10% or more in dry heat shrinkage, or a spun yarn mixed with different shrinkage components.

In addition, the low shrinkage component of these entangled mixed yarns and the different shrinkage difference mixed yarns is better to obtain a soft feel and a sense of span feeling when the single denier is smaller than the high shrinkage component. It also has an effect and a good effect on preventing dust adhesion.

The mixed entangled mixed latent loop yarn of the open loop and the closed loop referred to here will be described.

In the present invention, the entangled mixed yarn of the latent loop yarn used for the warp is a multifilament yarn (hereinafter simply referred to as a core yarn) relatively located on the core side, which is composed of a high shrinkage yarn, and a multifilament yarn located relatively on the sheath side. It is preferable that the filament yarn (hereinafter simply referred to as a sheath side) is made of a normal or low shrinkage yarn.

In the above, it is preferable that the shrinkage rate of the multifilament yarn of the core yarn is 10% or more, and the difference in shrinkage ratio of boiling water with the multifilament yarn of the sheath yarn is 5% or more. Also,
Single filament fineness of multi-filament yarn with low shrinkage is 0.05
Preferably it is ~ 1.3d. Further, the multifilament yarn having a high shrinkage ratio preferably has a single fiber fineness of 1 to 15 denier.

On the other hand, the number and size of loops and tarmi present in the entangled mixed yarn used in the present invention are small. And the bulk height is relatively small.

The above fine loop has a loop A defined below of 30
More than 0 / m, more than 50 loops / m and less than 10 loops C.

The loop A, loop B and loop C used here are a photoelectric type feather measuring machine (TORAY FRAY COUNTER) that measures the number of loops and feathers of the running yarn, and the yarn speed is 50 m / min and the running tension is 0.1 g / min. Measured under the condition of d, the number of loops / m protruding 0.15 mm or more from the yarn surface is Loop A, the number of loops / m protruding 0.35 mm or more is Loop B, and the number of loops / m protruding 0.6 mm or more is Loop C. It was done.

When the above entangled mixed yarn is heat-treated in hot water at 98 ° C. for 10 minutes without tension, the core yarn is composed of high shrinkage yarn, and the sheath yarn is low shrinkage or ordinary shrinkage yarn. The yarn itself shrinks.

When the entangled mixed yarn itself shrinks, the filaments of the core yarn and the filament of the sheath yarn constituting the yarn are entangled with each other by entanglement, and the sheath yarn is a normal shrinkage yarn or a low shrinkage yarn. However, the shrinkage of the individual filaments is small, and the shrinkage of the core yarn becomes a loop and a tarmi to form a bulky apparent loop yarn protruding from the yarn surface.

In the state of the yarn, the exposed loop yarn in which the loop and the tarmi are exposed by the heat treatment has a loop B projecting 0.35 mm or more from the yarn surface. It has a function to increase to 50 pieces / m or more and to remarkably increase bulkiness.

As described above, the entangled mixed yarn used for the warp of the present invention has latent loops and tarmi during the production of the yarn, and the number of the loops C protruding from the yarn surface is extremely small. Therefore, since the bulk of the yarn itself is low and the surface of the yarn is relatively smooth, the running resistance of the yarn is small.

Therefore, when used as a warp of a woven fabric, the heddle and the reed can pass well, and there is no entanglement between the loops and no opening failure occurs.

Then, at the time of dyeing after weaving, heat treatment (dry heat, wet heat, steaming) is performed alone or in combination with the dyeing under high temperature and no tension to make latent loop yarn loops and tarmi appear. And a high-density, bulky woven fabric can be obtained.

The figure is a schematic view showing an example of a method for producing an interlaced mixed yarn used for the warp of the present invention.

As shown in the drawing, a yarn 2 unwound from a core yarn package 1 is supplied to a processing device 4 which forms a turbulent airflow region via a first supply roller 3.

On the other hand, the yarn 6 supplied from the sheath yarn package 5 is the second yarn.
Is supplied to the processing apparatus 4 via the supply roller 7 of the first embodiment. These yarns 2 and 6 are simultaneously passed through appropriate guides 8 and 9 to the processing device 4
Supplied to In addition, it can also be supplied directly from the guide 8 to the processing device 4.

The two yarns 2 and 6 that have passed through the compressed air turbulence region generated in the processing device 4 become a loop yarn 10 and become the first take-up roller 1.
1 and the second take-up roller 12, and further the winding device 1
It is wound up on the package 14 through 3. The yarn is tensioned between the first take-up roller 11 and the second take-up roller 12.

This tension is preferable because it has an effect of eliminating large loops and loops of the loop yarn, and does not significantly affect the occurrence of loops and loops which become apparent by the heat treatment. If the tension is small, the effect of eliminating loops and tarmi is small. If the tension is too large, even minute loops of the loop yarn formed in the turbulent region of the pneumatic air are undesirably eliminated. It is preferable that the loop be erased to such an extent that almost no loop can be seen on the yarn surface with the naked eye (a fine loop can be seen with a magnifying glass or a microscope).

The method for producing a latent loop yarn is preferably performed under the following conditions.

Boiling water shrinkage of the core yarn is 10% or more and single fiber fineness is 1 to
Using a 15d multi-filament yarn, the sheath yarn has a difference in boiling water shrinkage from the core yarn of at least 5% and a single fiber fineness of 0.05 to
Use 1.3d multifilament yarn.

These yarns are supplied from individual supply rollers to a processing device (pressurized air supply amount of 80 to 120 Nl / min) that forms a compressed air turbulent flow area with a different overfeed rate, and are discharged from the processing device, entangled, and mixed. The latent loop yarn subjected to the above is taken up by the same take-off roller.

Here, the overfeed rate is defined as F (%) = ｛(V1) where F (%) is the feed rate when the surface speed of the supply roller is V ₁ and the surface speed of the take-off roller is V _2.
When the value of -V2) / V2｝ × 100 becomes (+), it is called the overfeed rate.

Then, conditions are determined such that the overfeed rate α of the core yarn is 2 to 15% and the overfeed rate β of the sheath yarn is 5 to 30%, and the difference β−α between the two is 3 to 15%. Is good.

This condition is suitable for making small loops and tarmi in the turbulent region.

Further, the yarn pulled out from the first take-up roller is wound by the second take-up roller while continuously tensioning the yarn at an underfeed rate of 0.4α to 0.8α with respect to the overfeed rate α of the core yarn. It is.

Example 1 As a multifilament yarn constituting a relatively core side,
Polyester filament yarn with 20% boiling water shrinkage
Using a 50D-24F round cross-section bright yarn, a polyester filament yarn with a boiling water shrinkage of 7.5% 50D-72F round cross-section bright yarn as a multifilament yarn constituting the relatively sheath side, and an overfeed rate of the core yarn side of +9 %, The overfeed rate of the sheath yarn side + 15%, the feed rate of the first take-up roller and the second take-up roller is -5.4%, and pressurization is performed with a turbulent nozzle having a compressed air supply rate of 90 Nl / min. A mixed fiber was obtained.

Fineness: 106D Boiling water shrinkage: 17.8% Number of loops before heat treatment Loop A: 447 pieces / m Loop B: 125 ル ー プ Loop C: 1 ル ー プ The number of loops after the entangled mixed-filament yarn is subjected to the boiling treatment is Loop A: 438 pieces / m Loop B: 390 pieces / m Loop C: 168 pieces / m

The yarn was used for warp and weft, and woven into a plain weave with a warp density of 85 yarns / inch (warp cover factor: 850) and a weft yarn density of 78 yarns / inch in a water jet loom. Relax the greige-intermediate set-weight loss treatment (5
%)-Dyeing-finishing processing resulted in a high-density woven fabric having a warp density of 117 yarns / inch (warp cover factor: 1770) and a weft yarn density of 100 yarns / inch.

The cover factor is Indicated by

The obtained woven fabric has a mixture of open and closed loops on the surface, the surface is covered with micro-loops, the touch is soft and the appearance is extremely spanning. Something was obtained.

Example 2 As a multifilament yarn constituting a relatively core side,
Using a 30D-12F round cross-section bright yarn having a boiling water shrinkage of 20% and a 30D-48F round cross-section bright yarn as a multifilament yarn constituting a relatively sheath side, a core yarn side overfeed rate of + 9%, Sheath thread side overfeed rate +15
%, The feed rate of the first take-up roller and the second take-up roller is-
Processed with a turbulent nozzle with 5.4% and compressed air supply of 90Nl / min. Fineness 63D Boiling water shrinkage 18.4% Number of loops before heat treatment Loop A: 332 / m Loop B: 72 〃 Loop C: 1 後 After free shrinkage of boiling water Number of loops Loop A: 416 / m Loop B: 330 / 個 Loop C: 88 / 〃

The yarn was used for warp and weft and woven in a water jet loom into a plain weave with a warp density of 142 yarns / inch (warp cover factor: 1100) and a weft density of 110 yarns / inch. The greige machine is processed in the steps of relax-intermediate set-arikari weight reduction treatment (5%)-dyeing-finishing set and has a warp density of 117 yarns / inch (warp cover factor: 137) and a weft density of 135 yarns / inch. Finished in high density fabric.

The surface of the woven fabric was covered with a mixture of open loops and closed loops of ultrafine fibers, and had a very soft feel and a sense of span. Also, because of the high density,
The waist and tension were also excellent.

<< Effects of the Invention >> The woven fabric of the present invention using the entangled mixed latent loop turn in which the open loop and the closed loop are mixed in the warp, in the dyeing process and the like, the shrinkage and the appearance of the loop and the tarmi simultaneously with the woven fabric texture. The appearance becomes soft with a sense of span, and despite the high density, the swelling of the yarn provides the fabric with firmness and waist, and at the same time has the effect of improving functionality, especially water resistance.

Then, a water-repellent effect is imparted by performing a water-repellent treatment after dyeing the woven fabric, and a fabric suitable for sports, particularly skiing, is obtained.

In addition, since unnecessary large loops and pallets (loops C) during weaving are extremely reduced, weavability is extremely excellent.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing an example of a method for producing an interlaced mixed yarn used for the warp of the present invention. 1: Core yarn package, 2: Core yarn 3: First supply roller, 4: Processing device 5: Sheath yarn package, 6: Sheath yarn 7: Second supply roller 10: Loop yarn 11: First take-up roller 12: Second take-up roller 13: Take-up device

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yukio Onishi 3-3-3 Nakanoshima, Kita-ku, Osaka-shi, Osaka Toray Industries, Inc. Osaka head office (72) Inventor Toshiaki Miura Kami-miyake, Heiwacho, Nakajima-gun, Aichi Prefecture No. 1 Yashiki 1 Toray Textile Co., Ltd. Tokai Factory (72) Inventor Minoru Shioshima 1 Toray Textile Co., Ltd. Tokai Factory No. 1 Kamimiyake, Kamimiyake, Heiwa-cho, Nakajima-gun, Aichi Prefecture (56) References JP-A-60-199945 (JP, A) JP-A-63-182443 (JP, A) JP-A-61-83370 (JP, A) JP-A-61-641 (JP, A) (58) Survey Field (Int.Cl. ⁶ , DB name) D03D 15/00 D03D 15/04

Claims (3)

(57) [Claims] Claims: 1. A woven fabric having an open loop and a closed loop on a surface using an interlaced mixed yarn in which an open loop and a closed loop of synthetic fiber multifilament yarn are mixed in at least the warp, wherein the open loop and the closed loop are: The expression of the loop is an open loop and a closed loop that are revealed after weaving using a latent loop yarn in which the latent is hidden, and 0.
A high-density woven fabric, wherein the number of loops protruding by 6 mm or more is 50 or more / m, and the warp cover factor of the woven fabric is 1100 or more. 2. The method according to claim 2, wherein the latent loop yarn is 0.15
The number of loops protruding at least mm is 300 or more, the number of loops protruding at least 0.35 mm is at least 50 / m, and the number of loops protruding at least 0.6 mm has a fine loop of 10 or less. The high-density woven fabric according to claim 1, wherein: 3. The high-density woven fabric according to claim 1, wherein the synthetic multifilament yarn of the warp is at least two kinds of different shrinkage entangled mixed yarns having a boiling water shrinkage of 10% or more. .