JPS6285087A - Patterned stretchable 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 (Industrial Application Field) The present invention relates to a patterned stretchable knitted fabric mainly used for foundations such as girdles, brassieres, and bodysuits.

(Prior Art) Conventionally, when knitting a single elastic fabric using a plain knitting machine such as a plain fine warp knitting machine or a plain knitting machine such as a nine-knit crosspiece for plain fabrics, it has been difficult to obtain a knitted fabric with a pattern. In other words, using a multi-handled bag machine with one warping machine can produce a wide variety of patterns, but it requires the use of a patterning device and a large number of pattern pieces, and it is difficult to produce complicated patterns with one warping culm. Increased productivity, operability, etc. [I
There are disadvantages such as lower J and higher cost. In addition, although it is possible to knit patterned items using the Maru Qi machine using all of the Jacquard machines, it has almost the same drawbacks as the Kiyoshi machine, and especially when used with completely bare elastic threads, there is a drawback that there are large restrictions on patterns.

In addition, there is a method of applying a pattern through textile printing9, and methods such as opal processing and face printing, but opal processing uses chemicals such as acid or alkali IJ 7i, so it is difficult to use elastic materials (used on J fabrics). There are problems with polyurethane elastic threads such as deterioration of the polyurethane elastic threads used in fabrics, and opal processing on knits that causes the patterns to appear clearly.Pigment printing has been practiced for a long time, but printing on elastic fabrics is difficult. The printed part may fall off due to the 4d between the fabrics, etc.
There is a problem with durability. On the other hand, in recent years, fashion has become more diverse in foundation materials, and f4'+
There is a growing demand for IJ knitted fabrics with t'l'h'rh properties. .

(Problems to be Solved by the Invention) The present invention aims to obtain a patterned stretchable knitted fabric that has no restrictions on patterns, has a clear pattern, is durable, and does not cause deterioration of elastic yarns. purpose.

(Means for Solving the Problems) The present invention is characterized in that a film is formed in a pattern at a ratio of 0.5 to 30% on the surface of a knitted fabric knitted with inelastic yarns and elastic yarns. The film is a patterned extensible knitted fabric whose elongation at break is greater than the elongation of the knitted fabric and which is formed from a transparent resin.

The inelastic thread used in the present invention is silk.

Yarns that can be used as normal warp knitted fabrics or nine-fine fabrics can be used, such as natural fiber yarns such as wool, synthetic fiber yarns such as nylon and polyester, or recycled fiber yarns such as rayon. The thickness of the inelastic thread is silk.

The spun yarn such as wool is preferably 30 g/l to 80''/1 or 8O3/2 to 140!!/2 cotton count equivalent.

Nylon.

Fitments such as polyester are 20 denier to 15 denier.
0 denier is preferable, more preferably 30 denier ~
It is 75 denier.

As the elastic yarn, polyester elastomer elastic yarn and polyurethane elastomer elastic yarn can be used, but polyurethane elastomer + RT yarn frSlft is preferable. As the polyurethane elastomer, an elastic thread formed from a special polyether type polyurethane elastomer is preferable because it has excellent thermal stability.

The denier number of the elastic yarn is usually 20 to 420 denier, but preferably 30 to 70 denier for warp knitted tricot shaved fabric, and 70 to 420 denier for bussel bag fabric. Preferably 140-28
It is 0 denier. In addition, in the case of circular knitted fabric, 1 usually 20 to 5
0 denier, preferably 30 to 40 denier.

Further, the elastic thread may be either a covering thread or a wire thread, but a wire thread is preferable. The elongation at break of the elastic yarn is preferably 400% or more.

The above-mentioned elastic yarn and inelastic yarn intersect, but one knitted fabric may be a warp knitted fabric or a round (4-knitted fabric).

In the case of warp knitting and tricot knitting, preferred knitting structures include half knitting, satin knitting, double atlas knitting, and double tenth knitting.

In addition, in warp knitting, the raschel weave is preferably knitted with yarns arranged in 6 reeds so that the inelastic yarn appears on the surface of the knitted fabric and one elastic yarn enters the inside of the knitted fabric, such as power net.

Bing structures such as half net, satin net, and truffle net can be used. In addition, in circular knitting, inelastic yarns and elastic yarns are knitted together, and the tension is adjusted so that the inelastic yarns are exposed to the surface of the knitted fabric. This can be used in jersey, interlock, pitch, and other knitting structures.

In the case of Uf4ea, Trifut) M weave, a normal plain knitting of two or more reeds is sufficient, and the gauge is 24 to 40 gauge, preferably 28 to 32 gauge. In the case of Russell organization, 4
On ordinary plain knitting machines with single reeds or higher, elastic yarns are often used for one or two of the rear reeds, and inelastic yarns are used for one or three of the t'i'+1 reeds for insertion knitting to create a ground texture. .

The gauge is preferably 18 to 32 gauge, preferably 24 to 28 gauge. In the case of a round weave, a regular jjiq ground knitting machine may be used. Either a V round or double needle bed knitting machine may be used.

The gauge is 18 to 32 gauge, preferably 24 to 28 gauge.

The yarn used, finish quality, etc. are appropriately determined depending on the application and the area of use.

The knitted fabric thus obtained is subjected to relaxing-(liν strain, bleaching)-presetting-dying-finishing under the usual processing conditions suitable for the knitted fabric.

A film is created on the surface of Tochiji using resin printing technique? Form and make payments with a sense of transparency. It is possible to carry out all the printing after presetting and then dyeing, but this is not preferable since it involves processing in a high-temperature solution for dyeing after printing, which causes problems with the clarity and durability of the pattern.

As for the printing machine, roller printing, rotary screen printing, flat screen printing, etc. are all used to print on ρ, Iga 1 elastic field/The equipment has to be under high tension and has a large number of dischargers. Rotary screen printing and flat screen printing are used because they produce good pattern effects. Dyed is preferred. The printing process involves adjusting the printing paste, which is mainly made of polyurethane resin.

The resin forming the patterned film may be any resin, but the elongation at break must be greater than the elongation of the knitted fabric, and it must be transparent so that the stretchability of the knitted fabric is not inhibited. . Resins that meet these requirements include polyurethane resins and acrylic resins.

Vinyl acetate resins are preferred, and polyurethane resins are particularly preferred.

As the polyurethane resin, a heat-reactive water-soluble urethane resin is preferable from the viewpoint of operational stability, durability, texture, and the like. A printing paste mainly composed of the above resin is prepared.

A more specific printing process involves using 55 to 85 sheets of heat-reactive water-soluble urethane resin (25% active ingredient), 60 to 80% of the active ingredient, a neutral metal salt as a catalyst, and more stable The printing paste is adjusted and used by mixing a blocking agent and, if necessary, a pasting adjuster.

After printing, dry at 100 to 140℃ and then dry at 150℃.
~180°C, preferably 160-170°C for 20 seconds ~5
Minutes, preferably 30 seconds to 3 minutes of heat treatment to +51p
A film of polyurethane resin is formed on the woven fabric. In addition to the printing paste mainly composed of heat-reactive water-soluble urethane resin, it is also possible to print dyes or pigments on full-turn elastic knitted fabric using a 911 roll and screen.

In addition, it is desirable that the imprint area is 30% or less of the fabric surface area from the viewpoint of reducing the elastic knitted fabric's elastic knitted fabric's elasticity and elongation recovery property, and changing the texture, and from the viewpoint of pattern effect, it is 0.5% of the fabric surface area. The above is desirable. The preferred range is 2 to 20 inches.

Here, the elongation at break of the film is measured as follows. Add 3y of film-forming resin to a Teflon-coated chalet with an inner diameter of 10 m, add 3x of catalyst (catalyst, manufactured by Dai-Kogyo Seiyaku Co., Ltd.) to the film-forming resin,
The pH of the solution was adjusted to 5.5 to 6.5 with a 5% solution of sodium bicarbonate, and the solution was air-dried for 12 hours at room temperature, then dried under reduced pressure at 50°C, and then heat-treated at 150°C for 10 minutes to form a complete film.

Next, the film was 2cm x 3tMt (thickness 0.2~
Cut to 0.3 m), Shimadzu Autogowof S-10
0 at a head speed of 501 tl/gold to measure the elongation at break.

The elongation of the 6j base is measured as follows.

Apparatus: Instron type tensile tester Descending and rising speed: 30±20/min Adjustment of test piece: Two test pieces of 2.5 m x 1 5 cn1 were taken in the vertical and horizontal directions.

Test method: A test piece was attached to a tensile testing machine with a tension interval of 10 crn, and the machine was operated to apply a 2.25-mm load.

Measure the elongation at 2.25kf, Find the average value of the points.

(Example) Examples 1 to 4, Comparative Examples 1 to 2 Polyether) V-type polyurethane elastic yarn 40 denier/'
An elastic warp knitted fabric was knitted using polyamide multifilament yarn (A yarn) and polyamide multifilament yarn 5υDenny/L/12 filament deformed Buffite yarn (B yarn) under the following conditions.

Warping draft of A yarn: 100 stitches Machine: Karl Mayer 28G tricot iso knitting Conditions: A yarn knitting length 77 bits/4
80 pieces B yarn knitting length 165cTn/480 pieces on-machine course 50 pieces/inch The resulting raw, elegant, relaxing, spirit-reiku-heat-set dyeing (dyeing polyamide in light pink with acid dye) ) - Soaping - Drying - Finishing set was carried out.

Next, the finished knitted fabric was subjected to printing under the following conditions.

Printing e&: Flat screen textile printing machine Screen mesh: io.

Printing Pattern: Polka dot pattern film (Printing T#I) Treatment: Heat-reactive water-resistance urethane resin (active ingredient 25, manufactured by Dai-Kogyo Seiyaku) 70 parts catalyst (neutral metal salt, manufactured by Dai-Kogyo Seiyaku) 7 Part Na
HCO3 (5%5oln) 3 parts water
20 parts total 100 parts Drying = 120°C x 3 minutes Heat treatment = 160°C x 60 seconds (pin tenter one-way heat setting machine) Soaping: Nonionic surfactant 60°C x 15 minutes drying
Drying = 120°C x 3 minutes Finishing agent treatment and finishing set: Nonionic surfactant pad 160°C x 30 seconds (pin tenter one-type heat setting machine) The area of the printing part is 0.3% of the fabric area, 0. , Article 5, 2.0%, 20.0%, 30.0%, 35.0% 6
Conducted on the level. The elongation at break of the printing paste in this case was 410 inches.

Regarding the obtained 6 (class M elastic bag material, Fante °-
Table 1 shows the evaluation results for the 4-year-old children, especially on the /i and jJ items.

Table 1 however.

Extensibility: Instron type tensile tester machine speed
30 soil 26 thin/min test ζ piece 2.5 crn width xi 6 cTna tensile distance
O demand 2.25 Gin Elongation recovery property under load: Instron type tensile tester machine speed
30±20/min Test piece 2.5 ctn width x 16 crn length tensile interval 1
Elongation rate: 80% Draw an elongation recovery curve and calculate the residual elongation.Effect: Sensory evaluation with two eyes.Durability: Repeated elongation 60 times in accordance with the conditions of JIS L 1018 H method. Evaluation Texture: Sensory evaluation by handling As is clear from Table 1, it can be seen that the ratio of the printed area to the fabric area has a great effect on the pattern effect and the physical properties of the fabric. That is, if the content is less than 0.3%, the printed pattern becomes too fine or the spacing between the patterns becomes too far apart, resulting in an insufficient pattern effect.

On the other hand, if the ratio of the printed area to the fabric area is increased, the fabric properties at the marks 11 and 8 will be inhibited, resulting in a decrease in the physical properties of the fabric and a worsening of the texture, especially in the printed area. If it exceeds 30%, the extensibility and elongation recovery of the fabric will be significantly reduced, resulting in disadvantages such as poor fit (which is important as a foundation material) and hard feel.

Comparative Example 3 A pigment print prepared under the following conditions was printed on the same elastic warp knitted fabric as in Example 1 with a printing area of 10%.

Printing glue treatment ws white binder 2
Part 0 Turpen Emulsion 75
Part Ethylene Glycol 5 Parts Total 100 parts The results of evaluating the obtained elastic material for the items that are particularly problematic as a foundation material are as follows.
Shown in the table. As is clear from Table 1, it had excellent pattern effect, but poor stability and durability.

(Effects of the invention) Akira Akira's patterned Naka & eF style yuri fabric has a transparent pattern that looks just like the pattern made by yuk 1 castle, and has a clear pattern in the vertical and horizontal directions. It is a shaft fabric that has the same elongation and elongation recovery values as conventional stretch knitted fabrics that have not been printed, and has excellent washability, durability, and texture.

Claims (1)

[Claims] On the surface of the knitted fabric made of inelastic yarn and elastic yarn,
A film is formed in a pattern at a ratio of 0.5 to 30%, and the film is characterized by having a breaking elongation greater than the elongation of the knitted fabric and being made of a transparent resin. Elastic knitted fabric with a pattern.