JPH072482U - Bulky woven knit with pattern effect - Google Patents

Abstract

(57) [Summary] [Structure] Highly oriented polyester unstretched yarn is heat-treated in the overfeed state, and then stretched to form thickness unevenness, and further, false twisting is performed between the single filaments. % Of the false twisted crimped yarn (A) having a yarn length difference of more than 5% and the polyester highly oriented undrawn yarn are intermittently applied with an aqueous liquid along the longitudinal direction, heat treated in a drawn state, and then false twisted. A bulky woven knitted fabric obtained by interweaving / knitting the obtained false twist crimped yarn (B) in which the lengths of the dark color portion and the light color portion are controlled in the longitudinal direction. [Effect] A clear pattern effect can be imparted to a soft and bulky woven or knitted fabric, and since the pattern portion can be arranged at an arbitrary position of the cloth, the surface effect of the cloth can be freely designed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bulky and soft woven or knitted fabric having a pattern effect.

[0002]

[Prior art]

 Conventionally, false twist crimped yarns having a difference in yarn length between multifilaments and single filaments have been effectively used as a means for obtaining a bulky fabric. However, this yarn alone had the drawback that the surface of the fabric was uniform and monotonous. Also, as a yarn having surface effect, a method of obtaining thick and thin yarn from polyester undrawn yarn has been proposed, but the pattern effect could not be exhibited at any position.

[0003]

[Problems to be solved by the device]

 An object of the present invention is to solve the above-mentioned conventional drawbacks and to provide a soft and bulky woven or knitted fabric having a pattern effect at an arbitrary position.

[0004]

[Means for Solving the Problems]

 As a result of earnest studies to solve the above problems, the inventors of the present invention have found that if a yarn having a yarn length difference between single filaments and a yarn having a controlled pattern effect of 5 cm or more is used, it is bulky. The inventors arrived at the present invention by finding that a soft and bulky woven or knitted product having a surface effect can be obtained without impairing the effect.

That is, the present invention provides a false twist crimped yarn (A) made of polyester multifilament having a yarn length difference of 5% or more between single filaments and a large difference in thickness between the single filaments. ) And a false twist crimped yarn (B) composed of a polyester multifilament in which the lengths of the dark color portion and the light color portion are controlled in the longitudinal direction of the yarn, the bulky woven or knitted fabric having a pattern effect. Is the gist.

Hereinafter, the present invention will be described in detail. The woven or knitted fabric of the present invention is a false twist crimped yarn (A) composed of polyester multifilaments having a difference in yarn length of 5% or more between single filaments and a large difference in fineness between the single filaments. And a false twist crimped yarn (B) composed of a polyester multifilament having a deep dyeing part and a light dyeing part in the longitudinal direction of the yarn and having a controlled length. This false twist crimped yarn (A) forms a fine loop on the surface of the woven or knitted fabric when it is made into a woven or knitted fabric and heat-treated, and plays the role of a soft and bulky woven or knitted fabric. If the yarn length difference between the single filaments of the false twist crimped yarn (A) is 5% or less, the soft and bulky texture cannot be exhibited.

When the false twist crimped yarn (B) is woven into a woven or knitted fabric and dyed, it becomes a yarn having a dark color portion and a light color portion with a controlled length in the longitudinal direction, and has a function of exerting a pattern effect. To do. The length (L) of the dark-colored portion and the light-colored portion of the false twist crimped yarn (B) is preferably 5 cm or more, and is preferably present at an arbitrary position.

The bulky woven or knitted fabric of the present invention is, for example, a woven fabric, when 100% of false twist crimped yarn (A) is used as warp, 100% of false twisted crimped yarn (B) is used as weft. Either use them, or use one or two false twist crimped yarns (A) and false twisted crimped yarns (B) in an appropriate combination. In this case, particularly soft and bulky texture can be emphasized. Further, when a large amount of false twist crimped yarn (B) is used, a woven fabric having an excellent surface effect can be obtained.

Further, in the knit, the false twist crimped yarn (A) is basically used, and the false twisted crimped yarn (B) is arranged every one course or every several courses, or the false twisted crimped yarn is provided on the handle portion of the knitted fabric. By using the crimped yarn (B) and arranging the false twist crimped yarn (A) in addition to the crimped yarn, a knitted fabric with a variety of pattern effects can be obtained.

Next, a method of manufacturing the two false twist crimped yarns of the present invention will be described. The false twist crimped yarn (A) is produced by, for example, heat-treating a polyester highly oriented undrawn yarn in an overfeed state to cause uneven orientation unevenness in the longitudinal direction of the yarn, and then drawing the unevenness in thickness. Can be obtained by further forming false-twisting, and the thick part is given priority over the details by the twisting in the false-twisting process, and the outer-layer filaments are stretched to a higher degree than the inner-layer filaments. A false twist crimped yarn having a difference of 5% or more between single filaments when untwisted and a difference in fineness between single filaments when a difference in the degree of extension occurs between the filaments and filaments. Becomes

Further, the false twist crimped yarn (B) is provided with an aqueous liquid having a heat shielding effect at a position controlled intermittently along the longitudinal direction of, for example, a polyester highly oriented undrawn yarn, and in a drawn state. It can be obtained by subjecting the heat treated yarn to false twisting. In this case, the part to which the aqueous liquid is not applied will be hot-stretched during the heat treatment, resulting in finer fineness than the part to which the aqueous liquid has been applied, and a light dyeing part with a light dyeing property. On the other hand, the part to which the aqueous liquid is applied is not hot-stretched, so it becomes a part of large fineness close to the thickness of the original polyester highly oriented undrawn yarn, and becomes a deep dyeing part with high dyeability.

Further, the false twist crimped yarn (B) is heat-treated in a state where the highly oriented polyester unoriented yarn to which an aqueous liquid having a heat-shielding effect is added is intermittently controlled at the same position as described above without being stretched. Then, it can also be obtained by subjecting it to draw false twisting. In this case, since the heat treatment effect does not reach the part to which the aqueous liquid is applied, it is necessary to perform draw false twisting while maintaining the thermoplastic property of the polyester highly oriented undrawn yarn as it is. Therefore, the cross-sectional shape of the single-filament filament is flattened and becomes a light-dyed part, as in the case of normal false-twist processing of ordinary undrawn yarn, and the plasticizing effect is reduced by heat treatment in the part where the aqueous liquid is not applied, When it is drawn and false twisted, it becomes hexagonal and becomes a deep dyed part. This yarn is a false twist crimped yarn having a deep-dyed portion and a light-dyed portion whose length is controlled, although the fineness does not change.

When the false twist crimped yarn (A) is obtained as described above, the yarn that has been heat-treated in a relaxed state is subjected to false twisting, so that the yarn having a heat shrinkage rate lower than that of the false twisted crimped yarn (B) is obtained. The fine loop of the false twist crimped yarn (A) can be formed on the surface of the woven or knitted material, and soft bulkiness can be imparted to the woven or knitted material, which is preferable.

Next, the present invention will be described with reference to the drawings. Fig. 1 is a schematic view of false twist crimped yarn (A). The thick part (1) exists in a few millimeters or less, and the detail (2) has a length of several millimeters to several centimeters. It is expressed randomly. FIG. 2 is a schematic view of an example of the false twist crimped yarn (B), and the dark color portion (3) is thick in both cross-sectional directions of the single filament and is present at a length of 5 cm or more. Also, the light-colored portion (4) is thin in the cross-sectional direction and has a length of 5 cm or more. FIG. 3 is a schematic view of the outer appearance of the woven fabric. (5) is a false twist crimped yarn (A), and (6) is a false twist crimped yarn (B).

Next, the yarn length difference of the monofilament in the present invention is marked between 10 mm of one multifilament, and the yarn length of each constituent monofilament is set to 0.1 g / denier of the filament. Measured under the load of d, the difference between the maximum yarn length and the minimum yarn length of these filaments was divided by the minimum yarn length, and the average value of these 10 points was expressed as a percentage.

[0016]

[Action]

 As in the present invention, a false twist crimped yarn (A) made of polyester multifilament having a difference in yarn length of 5% or more between single filaments and a partial difference in thickness between single filaments and a yarn When the false twist crimped yarn (B) made of polyester multifilament in which the lengths of the dark color part and the light color part are controlled in the longitudinal direction is interwoven or interwoven, a fine loop is formed on the surface of the woven or knitted fabric, It is a woven and knitted fabric that is bulky and has a pattern effect.

[0017]

【Example】

 Next, the present invention will be specifically described with reference to examples. Example 1 Polyester highly oriented undrawn yarn 110d / 36f obtained by high-speed spinning of polyethylene terephthalate was fed to a heat treatment apparatus at a feed rate of 120 m / min, and a relaxation rate of 92. After performing a relaxation heat treatment at 5% and a heat treatment temperature of 170 ° C., a 1.925-fold elongation was subsequently performed at room temperature. The obtained yarn was false twisted under the conditions of a false twist number of 2680 ZT / M, a heater temperature of 170 ° C. and an overfeed rate of −6.8% to obtain a false twist crimped yarn (A).

Immediately before supplying the polyester highly oriented undrawn yarn 110d / 36f to the heat treatment apparatus at a supply rate of 120m 3 / min, a microcomputer and a random pulse generator are used in combination along the longitudinal direction of the yarn. Water was intermittently attached while controlling, and the heat drawing treatment was performed at a heater temperature of 225 ° C and a draw ratio of 1.45 times. Then, the false twist number was 1800 ZT / M, the heater temperature was 170 ° C, and the overfeed rate was 4.0. The false twisting process was performed under the condition of%, and two lines were aligned and wound on the machine to obtain a false twist crimped yarn (B).

As a result of measuring the yarn length difference of the obtained false twist crimped yarn (A), it was found that 10 It had a yarn length difference of 5%. In the false twist crimped yarn (B), the length of the dark color portion was 7 cm to 10 cm, and the light color portion varied between 50 cm and 200 cm, and it appeared at a controlled position.

Next, the false twist crimped yarn (A) is additionally twisted in the S direction by 800 T / M, and the false twist crimped yarn (B) is additionally twisted in the S direction by 800 T / M. It was applied to wefts and weaved with a Venetian design having a warp density of 190 yarns / 2.54 cm and a weft yarn density of 73 yarns / 2.54 cm. The obtained mixed woven fabric was relaxed and refined, and then dyed using 12% owf of Dynic Thread KB-SE manufactured by Mitsubishi Kasei Kogyo Co., Ltd. as a dye in accordance with a usual polyester dyeing recipe.

When the weft is unwound and the expression state of the dark color part and the light color part is analyzed, the length of the dark color part is from 7 cm to 10 cm, and the light color part changes between 50 cm and 200 cm, Alternating light-colored parts appeared. In addition, the obtained woven fabric has a bulky and soft touch feeling due to the difference in yarn length between the single filaments, and the surface feeling has a pattern effect in which the dark-colored portion in the weft direction is generated in a favorable position in a fogging pattern. It was a thing.

[0022]

[Effect of device]

 As described above, since the bulky fabric having a pattern effect of the present invention has the above-described structure, it is possible to impart a bulky and soft feeling having a clear pattern effect. In addition, since the fabric of the present invention can use a yarn having a pattern effect in which a dark color portion or a light color portion is generated at an arbitrary place, the pattern effect on the surface of the fabric can be freely designed. .

[Brief description of drawings]

FIG. 1 is a schematic view of a false twist crimped yarn having a yarn length difference of 5% or more between single filaments.

FIG. 2 is a schematic view of a yarn having a dark color portion with a length of 5 cm or more at a position controlled in the longitudinal direction of the yarn.

FIG. 3 is a schematic view of an example fabric according to the present invention.

[Explanation of symbols]

1 thick part 2 thin part 3 dark color part 4 light color part 5 false twist crimped yarn having a yarn length difference of 5% or more 6 false twisted crimped yarn having a dark color part and a light color part in the longitudinal direction of the yarn

Claims (2)

[Scope of utility model registration request] 1. A false twist crimped yarn (A) comprising a polyester multifilament having a yarn length difference of 5% or more between single filaments and a large difference in thickness between the single filaments, and a yarn. A bulky woven or knitted fabric having a pattern effect, characterized in that a false twist crimped yarn (B) made of polyester multifilament in which lengths of a dark color portion and a light color portion are controlled in the longitudinal direction is woven or knitted. . 2. The bulky woven fabric having a pattern effect according to claim 1, wherein the lengths of the dark color portion and the light color portion are each 5 cm or more.