JPH0684573B2 - High-density fabric with shades - Google Patents

Description

TECHNICAL FIELD The present invention relates to a high-density woven fabric with a shade pattern, which has excellent waterproofness, appropriate breathability, and a deep color tone.

[Conventional technology]

Fabrics for down-filled clothing, windproof clothing, and cold-weather clothing have traditionally been woven by weaving high-density cotton fine yarns into the wefts and then weaving them, followed by resin processing and surface pressing. A high-density woven fabric is used. Such a high-density woven fabric has a certain degree of waterproofness, and further has an advantage that the waterproofness can be easily increased by resin processing or the like. However, the above-mentioned high-density woven fabric has a problem that weaving efficiency is poor because it has to be woven by weaving thin yarns into warps and wefts at high density, and the obtained woven fabric is thick and does not have a good texture. In addition, a resin whose waterproof property is improved by processing the resin has a drawback that its effect is diminished with time.

On the other hand, the present applicant uses a special fibrillated composite filament, and by splitting the composite fibrillated composite filament after weaving to give heat shrinkage,
A method for densifying a woven fabric has been developed and already licensed (Japanese Patent Publication No. 62-8535). According to this method, weaving efficiency is good because weaving can be done in the same manner as ordinary fabrics when weaving, and since the resulting fabric is of ultra-high density, the structure itself of the weaving structure provides adequate breathability. It has the advantage that it is waterproof and does not require special resin processing. And, the surface thereof has an advantage that it is very smooth and has even dyeing property.

[Problems to be Solved by the Invention]

However, the high-density woven fabric using the above special fibrillation-type composite filament has been required to have a softer and softer texture due to its smoothness without any further depth in color tone. Therefore, the present applicant uses the above special fibrillated composite filament for the weft,
When the false twisted yarn of monofilament having a fineness of 20 times or more of the average single yarn fineness of the fiber bundle obtained by splitting the filament into the warp is used for the warp, a soft texture and a shade due to delicate warps can be obtained. Find out
An application has already been filed (Japanese Patent Laid-Open No. 63-6130). However, since this improved high-density fabric uses monofilament as the warp, it has a defect that the warp density is coarse and the weave structure becomes coarse after shrinking, and sufficient waterproofness cannot be obtained. ing.

The present invention has been made in view of such circumstances, and an object thereof is to provide a high-density woven fabric having excellent waterproofness, appropriate breathability, and a deep color tone.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the high density fabric with a light and shade pattern of the present invention has a weft composed of a fibril bundle having an average single yarn fineness of 0.5 denier or less derived from a fibrillated type composite filament, and the warp and the weft as described above. A composite yarn composed of the same fibril bundle and a polyester filament having a single yarn fineness of 1 denier or more so that the appearance of the fibril bundle portion and the appearance of the polyester filament portion on the outer peripheral surface are irregular. It is said that the polyester filament is dyed in a darker color than the fibril bundle by the dyeing treatment on the entire woven fabric, and a fine wavy shade pattern is irregularly formed on the woven fabric surface. Take composition.

[Action]

That is, the present inventors have conducted a series of studies in order to obtain a high-density woven fabric that is excellent in waterproofness and has a deep color tone.
As a result, a fibrillated composite filament similar to that used in the invention according to the previous application was used as a weft, and this fibrillated composite filament and a polyester filament having a significantly larger single yarn fineness than this were used. , When the composite yarns that are combined so that each appearance on the outer peripheral surface is irregular are used as warp yarns,
On the surface of the woven fabric, in the part where the weft appears, the fine fiber bundles derived from the special composite filament appear regularly in the same direction, while in the part where the warp appears,
100% in some areas due to irregularities on the outer surface of the composite yarn
It was found that the fibril bundles appeared, and at some parts both the fibril bundles and the polyester filaments appeared, and the appearances (ratio of the fibril bundles and the polyester monofilament appearing outside) were uneven. For this reason, when the fabric is heat-shrinked and dyed with a disperse dye, the fibril bundle used for warp and weft shrinks at a high shrinkage rate, resulting in a very dense weave structure and excellent waterproofness. In addition, it was found that, in a thin fibril bundle and a thick polyester filament, the thick polyester filament was dyed more densely, and fine wavy shades were irregularly formed on the entire surface of the fabric, and the present invention was reached. did.

Next, the present invention will be described in detail.

The fibril bundle constituting a part of the warp and the weft in the present invention is derived from a fibrillated composite filament, and after weaving a woven fabric using the fibrillated composite filament, a fibril-forming agent is used. It is obtained by splitting this.

The fibrillation-type composite filament is a polyamide and a polymer having no affinity with the polyamide (for example, polyester), which is bonded along the longitudinal direction by a composite spinning process. In the cross section, both components A and B (which may be polyamide components) are side-by-side as shown in FIG. 1 (1), (2), (3) ), Which is a side-by-side repeating type, as shown in FIG.
A component A having a radial shape as shown in (8) and another component B having a shape complementary to this radiation portion, and a radial shape as shown in FIGS. 9 (10) and (10). A component A having a component A and another component B having a shape that complements the radiating portion, and one radiating shape of which is discontinuous on the center side, and a side-by-side repeating type hollow portion as shown in Fig. 11 (11). There is something like that.

As the polyamide which is one component of the composite filament, for example, nylon 4, nylon 6, nylon 7, nylon 1
1, Nylon 12, Nylon 66, Nylon 6 ・ 10, Polymetaxylene adipamide, Polyparaxylylene decanamide,
Examples thereof include polybiscyclohexylmethane decanamide and copolyamides containing these components.

Further, as the polymer having no affinity with polyamide, which forms a composite filament together with the above-mentioned polyamide, polyester, polyolefin, polyacrylonitrile and the like can be mentioned. From the viewpoint of facilitating melt composite spinning with the above-mentioned polyamide, polyester and Polyolefin is preferable, and polyester is most preferable. That is, when a combination of polyamide and polyester is used, the color tone, gloss, and texture of the resulting woven fabric are most preferable. Examples of the polyester include polyethylene terephthalate, polytetramethylene terephthalate, polyethyleneoxybenzoate, poly 1,4-dimethylcyclohexane terephthalate, polypivalolactone and copolyesters containing these, and the like. , Polypropylene, and copolyolefins containing these as components.

Composite filaments combining the above two components, the polymers of each other have no affinity for each other, usually, by physical impact such as mechanical bending and friction, or swelling the polyamide by a chemical solution. By the chemical method of
It can be split into a bundle of fine fibrils. Examples of such a chemical solution (fibrillating agent) include benzyl alcohol, β-phenylethyl alcohol, phenol, m-cresol, formic acid, acetic acid and the like. These are suitable for use as an aqueous solution or an aqueous emulsion thereof, rather than directly using them individually. Among them, when using the aqueous emulsion of benzyl alcohol,
It is suitable in terms of the shrinkability and fibrillation effect of the woven fabric and in that it is relatively easy to handle.

In the present invention, the average single yarn fineness of the fiber bundle obtained by splitting the composite filament must be 0.5 denier or less. That is, when the average single yarn fineness exceeds 0.5 denier, the shrinkage of the weft is lowered and the texture of the obtained woven fabric is also deteriorated. In addition,
The above-mentioned "average single yarn fineness" is defined by (single yarn fineness before fibrillation) / (number of single yarn fibers after fibrillation), for example, the shape shown in Fig. 1 (8). The single filament fineness of the composite filament is 2 denier, and when the composite filament becomes 9 single yarn fibers (fibrils) as shown in FIG. 2 due to splitting, the average single yarn fineness is It becomes 0.2 denier. In order to satisfy this condition, it is preferable to set the weight ratio of the polyamide and the polymer having no affinity for the polyamide to be 1: 4 to 4: 1.
If it is out of this range, single yarn fibers having a large fineness tend to remain after fibrillation.

On the other hand, the composite yarn used for the warp in the present invention is a composite yarn of the same composite filament and polyester filament as described above. The polyester filament may be a multifilament or a monofilament, but the single yarn fineness thereof must be 1 denier or more. That is, when the denier is less than 1 denier, the difference in fiber thickness between the fibril bundle that has been split and the average single yarn fineness of 0.5 denier or less is small, and therefore the difference in color of the dyed yarn does not occur. Is. And, the compound yarn of the polyester filament and the composite filament,
The two may be twisted to be combined in the same manner as the normal plying, or may be interlaced to be combined. However, it is preferable that the compound yarn is twisted by the twisting because the obtained composite yarn is strongly twisted, and thus a fine shade pattern is given to the obtained woven fabric. Further, it is preferable to set the number of twists in the twisting to 400 to 600 T / M. This is because if the twist is too loose, the shade pattern of the resulting woven fabric will not be so clear and will be in the shape of a heather, while if the twist is applied too much, splitting will not be carried out sufficiently.

For the above-mentioned ply twist, instead of using a raw yarn ply-twisting machine as usual to twist once, the ply-twist machine makes a lower twist of about S150T / M and then a double twister of about S350T / M. Twisting is preferred. That is, it is difficult to control the yarn feeding tension of the polyester filament by only one twisting with the twisting machine, and the warp and knotting due to the twisted yarn unevenness is likely to appear. By combining the lower twist and the upper twist as described above, It is possible to prevent the occurrence of moderation.

This invention uses the special composite filament as a weft,
After weaving the above-mentioned composite yarn as a warp according to a usual method, the fabric is dipped in the fibrillating agent, or is padded and split along the longitudinal direction to form a fine fibril bundle, and then 70 ° C. Or more, preferably 90-120 ℃,
More preferably, the desired high-density woven fabric with grain can be obtained by heat-treating with steam at 90 to 100 ° C., shrinking, and dyeing with a disperse dye or the like.
In the woven fabric thus obtained, as shown schematically in FIG. 3, fine wavy shade patterns are irregularly formed on the woven fabric surface. In this way, the fine light and shade pattern is formed, as schematically shown in FIG. 4, on the surface of the woven fabric, the fine fibril bundles 1 derived from the above-mentioned special composite filament are inevitably present at the part where the weft appears. On the other hand, 100% fibril bundles 1 appear at a certain portion P and warp yarns 1 and polyester at a certain portion Q in the part where warp appears because of irregularity of the outer peripheral surface of the composite yarn. It is considered that this is because the filaments 2 both appear and the manner of appearance (ratio of the filament bundle 1 and the polyester filament 2 appearing on the surface) is uneven. That is, as described above, due to the difference in the thickness of the portion of the fiber bundle 1 and the portion of the polyester filament 2 which appear irregularly on the surface of the fabric, the polyester filament 2 is dyed darker than the portion of the fiber bundle 1. The light and shade are clearly visible to the naked eye, resulting in an irregular wavy pattern. And, since the fibril bundle 1 used for the warp and the weft shrinks at a high shrinkage rate, this woven fabric has a very dense weave design,
Shows excellent waterproofness. By the way, the fabric of the present invention is 70
It has been measured to show a water pressure resistance of 0 m / m or more.

Incidentally, the dyeing of the woven fabric of the present invention is carried out by using a usual polyester
There is no problem if it is carried out according to the case of dyeing a nylon mixed woven fabric. Therefore, examples of the dye to be used include disperse dyes and Azoic dyes, and among them, disperse dyes are preferable.

Further, when the surface of the woven fabric obtained by the dyeing is subjected to a raising treatment, the shade pattern becomes more distinct.

Next, examples will be described together with comparative examples.

[Examples 1 to 3 and Comparative Examples 1 and 2] High-density woven fabrics were made under the conditions shown in the following table, and the texture of each sample was visually observed and the texture was evaluated.
The water pressure resistance (according to JIS L-1092) was measured.

The results are also shown in the table below.

From the above results, the high-density fabric with a shade pattern of the present invention,
It can be seen that the sharpness, texture, and waterproofness of the shade pattern are superior to the comparative example product.

〔The invention's effect〕

As described above, the high-density light and shade patterned high-density fabric of the present invention is configured by the weft yarns derived from the fibrillated composite filaments, and the warp yarns have the same fibril bundles and the polyester filament of the special thickness. It is composed of a composite yarn in which the fiber bundle portion and the polyester filament portion are irregularly expressed on the surface of the woven fabric, and the filament bundle portion and the polyester filament portion are different in the irregular distribution state. It is dyed dark and has a light and shade pattern. Therefore, this woven fabric gives a deep color tone due to the above-mentioned light and shade pattern and gives a calm impression. Further, the fibril bundle used for warp and weft contracts at a high contraction rate, so that the woven structure becomes very dense and exhibits excellent waterproofness. Therefore, it can be applied to various kinds of fabrics such as clothes, bags, umbrellas, etc., which are required to be waterproof, and it is possible to provide a high value-added product that has never existed before.

[Brief description of drawings]

Figure 1 (1), (2), (3), (4), (5),
(6), (7), (8), (9), (10) and (11)
Is a cross-sectional view showing an example of a fibrillated composite filament used in the present invention, FIG. 2 is an explanatory view of a state in which one example of the fibrillated composite filament is split, and FIG. 3 is a view of the present invention. FIG. 4 is a schematic plan view showing the state of the woven fabric surface, and FIG. 4 is a schematic explanatory view of the woven structure of the woven fabric surface. 1 ... fibril bundle, 2 ... polyester filament

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location D03D 15/00 C 7199-3B D 7199-3B

Claims (2)

[Claims] 1. A weft yarn is composed of a fibril bundle derived from a fibrillation-type composite filament and having an average single yarn fineness of 0.5 denier or less, and a warp and a polyester bundle having a fibril bundle similar to the weft yarn and a single yarn fineness of 1 denier or more. And a woven fabric composed of a composite yarn in which the appearance of the fiber bundle portion and the appearance of the polyester filament portion on the outer peripheral surface are irregular, and the woven fabric is subjected to a dyeing treatment. The polyester filament is dyed in a darker color than the bundle of fibrils, and fine wavy shades are irregularly formed on the surface of the woven fabric. 2. The high-density woven fabric with a light and shade pattern according to claim 1, wherein the water pressure resistance is set to 700 m / m or more.