JPS61239060A - Extensible knitted fabric - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a knitted fabric that is hygroscopic, has excellent set properties, fit properties, stretchability, and shape retention properties.
In more detail, it has excellent light fastness and color fastness due to gases in the atmosphere, and has excellent aging formability such as molding and pleating, and is suitable for use in foundation electronics and sports clothing. It is a knitted fabric.

(Prior Art) Conventionally, knitted fabrics for foundation changing or sports clothing have been knitted using the kings of hygroscopic fiber yarns, elastic yarns, and polyamide fiber yarns or polyethylene terephthalate fiber yarns. However, silk fabrics knitted from polyamide fiber yarns, hygroscopic fiber yarns, and elastic yarns have drawbacks such as low light fastness and polyamide fibers discoloring more than K due to NOx gas in the atmosphere. Also, thermoforming such as molding and pleating is inferior.

Furthermore, silk fabrics knitted from polyethylene terephthalate fiber yarns, hygroscopic fiber yarns, and elastic yarns have the disadvantage that the elastic yarns deteriorate due to high-temperature dyeing during processing. Particularly recently, there has been a strong demand for knitted fabrics with excellent discoloration resistance, and in the field of foundation silane, silk fabrics that can be easily molded and pleated are required in order to produce molding effects and 7-uncy effects. However, a knitted fabric that satisfies all these requirements has not been obtained! It was.

(Problems to be Solved by the Invention) The present invention has excellent light fastness and discoloration resistance due to NOx gas in the atmosphere, does not cause deterioration of the elastic yarn, and has excellent thermoforming processability. The purpose is to obtain a stretchable knitted fabric that also has excellent moisture absorption.

(Means for Solving the Problems) The present invention is a stretch knitted fabric knitted with atmospheric pressure cation dyeable polyester fiber yarn, hygroscopic fiber yarn, and elastic yarn.

The atmospheric pressure cation dyeable polyester fiber used in the present invention is one in which 0.5 to 7 molt of a Nisdel-forming component containing a sulfonic acid metal base is present in the total acid component or glycol component constituting the polyester. This term refers to polyesters that can be dyed with Kanaone dyes under atmospheric pressure, and are obtained by copolymerizing, for example, 5-sodium sulfoine heptal component in a proportion of 0.5 to 7 mol, preferably 1 to 6 mol. alkylene terephthalate polyester,
Alternatively, a polyester containing a sulfonic acid metal base-containing ester-forming component in an amount greater than or equal to the above polyester is blended with a fullylene terephthalate polyester that does not contain sulfonate gold I4 groups, so that the sulfonate metal base-containing ester-forming component as a whole is within the above range. It is selected from cationic dyeable polyester fibers obtained by melt spinning a blend of two or more polyesters. Furthermore, the content ratio of the ester-forming component containing a metal sulfonic acid group that imparts dyeability under normal pressure, the spinning conditions, etc. are also electronic, and when the content ratio of the ester-forming component containing a metal sulfonic acid group is small, that is, the total acid If the amount is usually 5 molt or less based on the components, high-speed spinning is performed at 3000 m/min or more, or additional copolymerization components such as inctaric acid, adipic acid, sebacic acid, etc. are added to the sulfonic acid metal base-containing ester forming component.
Acid components such as glutaric acid and dimer acid, glycol components such as diethylene glycol, cyfurobylene glycol, neopentyl glycol, neopentyl glycol alkylene oxide adducts, oxybenzoic acid, and oxyethoxybenzoic acid. It is also usually produced by ordinary spinning or high-speed spinning of a polyester prepared by copolymerizing oxyacid or the like with 1 to 15 moles based on the total acid component.

The atmospheric pressure cation dyeable polyester fiber yarn may be any of filament yarn, spun yarn, and composite yarn. Further, the cross-sectional form of the fibers may be circular, triangular, octagonal, uneven or uneven, and may be square or bright. The denier number of the atmospheric pressure cation dyeable polyester fiber yarn is not particularly limited, but when the knitted fabric is used as a 7-and-a-half yarn,
The total denier is preferably 30 to 150 denier,
More preferred is 40 to 75 deniers, and the single fiber denier is usually preferably 0.5 to 5 deniers, with -2 deniers being 1 to 3 deniers.

In addition, in the present invention, hygroscopic fiber yarn refers to
It refers to materials with a moisture content of 6 or more at 5% RH, such as natural fibers such as cotton, linen, wool, silk, and cellulose-based regenerated fibers such as viscose.

Further, the hygroscopic fiber yarn may be a spun yarn, a filament yarn, or a composite yarn of a hygroscopic fiber yarn and a normal pressure cation dyeable polyester fiber yarn or an elastic yarn. Examples include blended yarns of hygroscopic fiber yarns and normal pressure cation dyeable polyester fiber yarns, and composite yarns made by opening multifilaments of the latter and mixing one of the former.

Composite yarns with elastic yarns include core yarns, covering yarns, etc. with hygroscopic fiber yarns.

The elastic threads used in the present invention include polyester elastomer elastic threads, polyamide elastomer elastic threads, polyurethane elastomer elastic threads, fluorine-based elastomer elastic threads, polycarbonate elastomer elastic threads, etc. In particular, polyurethane elastomer elastic threads are used. preferable. Examples of polyurethane elastomers include polyurethane elastomers obtained by reacting polymer diols such as polyester diols, polyether diols, and polycarbonate diols with polyisocyanates, low molecular chain extenders, and optionally terminal cappers. Elastic threads formed from ether-containing polyurethane elastomers are preferred because they have excellent thermal stability. The denier of the elastic yarn is preferably 20 to 420 deniers, more preferably 20 to 70 denier for foundation silanes that require soft elasticity, and more preferably 20 to 70 denier for foundation silanes that require hard elasticity. More preferably 140 to 420 deniers. Further, it is preferable that the elongation at break is 400 inches or more.

The above-mentioned normal pressure cation dyeable polyether value fiber yarn, hygroscopic fiber yarn, and elastic yarn are inter-knitted, but the knitting structure is not particularly limited, and may be circular or flat rope knitting. It may also be warp knitted. For example, in the case of rope knitting for foundation and clothing, it is preferable to use normal pressure cation dyeable polyester fiber yarn, hygroscopic fiber yarn, and elastic yarn in a jersey texture, and in the case of a warp knitted tricot texture, It is knitted using normal pressure cation dyeable polyester fiber yarn as the front liquid and hygroscopic fiber yarn or elastic yarn as the middle reed or rear reed.

The reeds used for the hygroscopic fiber yarns and elastic yarns are selected depending on the design purpose of the knitted fabric, but either the middle reed or the rear reed may be used.

The knitting structure is preferably half knitting, satin knitting, double atlas knitting, double density knitting, etc., and hygroscopic fiber yarn is preferably inserted or knitted therein. These are soft type 7
Suitable for Andesi and N.

In addition, for the warp knitted raschel weave, it is best to use a knitted structure in which the yarns are arranged in each reed so that the normal pressure cation dyeable polyester fiber yarns are exposed to the surface of the knitted fabric and the elastic yarns are inside the knitted fabric. , half net, satin net, tricone net, etc. can be used as the base weave. These are suitable for hard type foundation foundations.

The knitted fabric thus obtained is generally scoured and relaxed at 170°C to 210°C, preferably 180°C to 210°C.
Heat set at 00°C with appropriate width adjustment, dye or print as desired, and final set at 160°C to 190°C.
C., preferably 170 to 180.degree. C. while adjusting the width appropriately. The heat setting time is 10 to 60 seconds, preferably 20 to 40 seconds.

Scouring, relaxing, heat setting, dyeing, etc. can be done at almost the same temperature as conventional fabrics using regular nylon 6 or nylon 66 and hygroscopic fiber yarn, as well as elastic yarn, and polyethylene terephthalate yarn and hygroscopic fiber yarn. Another feature is that it can be processed at a temperature 10 to 30°C lower than conventional fabrics using elastic threads, and this feature makes it possible to prevent or reduce deterioration of the elastic threads and to obtain a sufficient setting effect.

Next, the core knitted fabric is subjected to shaping processing, if necessary.

Molding temperature is 170~210℃, preferably 170~210℃
190°C, time is 10-60 seconds, preferably 20-40 seconds
Seconds.

In addition, when dyeing is performed, the dye used may be either a cationic dye or a disperse dye for the normal pressure cation dyeable polyether fiber yarn, but cationic dyes are particularly preferred.

For hygroscopic fiber yarns, dyes suitable for each fiber are used, but for cellulosic hygroscopic fibers, direct dyes and reactive dyes are used.

Dyeing conditions are usually 90 to 110°C for 20 to 120 minutes, preferably 90 to 100°C, 40 to 60 minutes, or dyeing liquid or print pasting 4 and then under saturated steam for 20 to 120 minutes, preferably 40 to 60 minutes. Steam fixation for 60 minutes, or under superheated steam at 130-170°C for 3-30 minutes, or under pressurized steam at 120°C or lower, preferably 110°C or higher for 10-30 minutes.
60 minutes, preferably 20 to 40 minutes.

(Example) As Example A yarn, 1.3 mol of 5-sodium sulfoisophthalic acid, neopentyl glycol, and ethylene oxide adduct (3 moles of ethylene oxide added) were added to the total acid component.
．． A filament yarn made of ethylene terephthalate polyester copolymerized with 50 denier 18 filament bright yarn of 50 denier and 18 filament irregularly shaped bright yarn is used as the B yarn, and polytetramethylene ether glycol, 4.4'-
A 40-denier polyether type polyurethane elastic yarn obtained by using diphenylmethane diisocyanate, ethylene diamine, and dimethyl hydrazine as a terminal capper was arranged, and 100'S/2 cotton was used as the C yarn to knit under the following conditions. .

B yarn warp draft: 100 stitches Machine: Karl Mayer, 28G tricot machine Knitting conditions: A yarn 185 apt / 480 course B yarn 80 cIN/480:=r-, XC yarn 35CM
/480 course knitting structure: A yarn 1-0/2-・3 (front) B yarn
1-2/1-0 (middle) C yarn 0-0/1-1 (back) Soil (half-nine lay) The gray fabric was then scoured, dyed, and finished under the following conditions.

Scouring and relaxing machine: Wide relaxer Scouring aid: Marbon T (Matsumoto Yushi Co., Ltd., anionic scouring agent) 21/l1 Conditions = 80°C, 30 seconds Drying: Pin tenter - 120°C, 40 seconds Heat setting: Pin tenter 180°C, 30 seconds staining
Two-stage dyeing machine: Normal pressure four-way jet dyeing machine Dyeing 1 Dye: N1chilon White Wx Liq
uid (Nissei Kasei Co., Ltd.) 2thowf Auxiliary agent: Glauber's salt 5f/! Acetic acid 0.3 ce/1 Sodium acetate 0.3 no/I1 Conditions = 95°C x 40 minutes staining 2 Dye: Kayeoll RG (fr Nisso Kako) 0
．． 5% owf Auxiliary agent: Glauber's salt 5 fl/1 Conditions = 95°C x 40 minutes Soaping: Nonionic surfactant 11/l at 60°C
x 20 minutes): 170°C, 30 seconds with a pin tenter dry set Molding processing: 180°C, 40 seconds mold processing Comparative Example 1 Using nylon 6 fiber yarn as the material for the A yarn in Example 1, dyeing in IK BlankoP-hor
CL (acid dye, Bayer 11!) 1%
A knitted fabric was obtained in the same manner as in the example except that the auxiliary acetic acid was o and 5 fyll, and the conditions were 95° C. for 30 minutes.

Comparative Example 2 The material of yarn A in Example 1 was polyethylene terephthalate (In) yarn, and the dye in dyeing 1 was Uvi
A silk fabric was obtained in the same manner as in the example except that tax EBF (disperse dye, manufactured by Ciba Geigy) was used and the conditions were 120'CX 30 minutes.

Table 1 shows the results of evaluating the knitted fabrics obtained in Examples, Comparative Examples 1 and 2 in terms of needle head rigidity, nitrogen oxide gas discoloration, stretchability, and molding durability.

Table 1 (Note) 1) JISL 0842'71 (needle base) 10 hours 2) JISI, 0855'76 (aluminum nitride:
A gas): (Motosuku weak test) Qualitative comparison of Q properties after 200 cycles of repeated elongation 4) Mold processing A 303 square meter silk fabric was laid flat in a wrinkle-free 7-lead condition, and several knitted fabrics were The knitted fabric is pushed upward from the lower surface by a semispherical convex iron heating part with a diameter of 10 cl and a height of 5 1, and is pressed down by a concave iron heating part that fits into the convex iron heating part to form the knitted fabric.

Temperature: 180°C x Time: 40 seconds Umbrella 5) Household washing of leprosy As is clear from Table 1 based on the JISL-1018H method, the Examples have excellent light fastness, nitrogen oxide gas discoloration, elasticity, and mold processing durability. However, Comparative Example 1 had low light fastness, poor discoloration resistance to nitrogen oxide gas, and poor molding durability. Furthermore, in Comparative Example 2, the elastic yarn deteriorated due to high-temperature dyeing, resulting in poor elasticity and poor mold processing durability.

(Effects of the Invention) The stretchable knitted fabric of the present invention has excellent stretchability, light fastness, and discoloration resistance due to gases in the atmosphere, and at the same time has excellent moldability, and It also has excellent moisture absorption properties, making it ideal for use in clothes, such as bras, girdles, and sheets.

Patent applicant: Toyobo Co., Ltd. Procedural amendment dated May 27, 1985 L Case description 1985 Patent Application No. 81012λ Name of the invention Stretch knitted fabric & person making the amendment Relationship with the case Patent applicant: Osaka 2-2-8 Dojimahama, Ichikita-ku Table Column for detailed description of the invention in the specification subject to amendment Contents of the amendment (1) “Dyeing 1” on page 13, line 5 of the specification, now,,, -r staining ” he corrected.

(2) Change ``ri-owf'' to ``o'' on line 7 of the same page.
wf and do not use any auxiliary agents.''

that's all

Claims (1)

[Claims] A stretch knitted fabric characterized by being knitted with normal pressure cationic dyeable polyester fiber yarn, hygroscopic fiber yarn, and elastic yarn.