JPS5851066B2 - How to process knitted fabrics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses thermoplastic fiber or a knitted fabric mainly composed of the same, especially a tricot knitted fabric, as a base material, which is lightweight, has a thick feel, and has flexibility, elasticity, and The present invention relates to a processing method for obtaining a sheet-like material that is breathable, waterproof, and cold-resistant, and does not have the appearance of a tricot knitted fabric.

Conventionally, materials with a different appearance have been manufactured by applying various coatings to tricot knitted fabrics using synthetic resin solutions or by laminating films, but the elasticity and breathability of tricot knitted fabrics have been improved. In processing that maintains the fabric as it is, the appearance is similar to that of a knitted fabric, whereas in processing methods that give a thicker and new appearance through coating, the texture hardens due to the penetration of the resin liquid, and the original expansion and contraction of the tricot knitted fabric is lost. In addition, products laminated with a film have a thick feel but have almost no breathability and no moisture wicking effect, causing them to swell during wear. There was a drawback that the elasticity and elasticity were also reduced.

The present invention solves these drawbacks and provides a method for easily manufacturing a flexible sheet-like material that does not have the appearance of a tricot knitted fabric, has breathability, has sufficient elasticity, and has a thick feel. It was completed based on a completely new idea.

Specifically, we focused on minimizing the gaps in the tricot knitted fabric, and by dry heat or wet heat shrinkage treatment of the tricot knitted fabric made of or mainly composed of thermoplastic fibers, we reduced the number of wales to 200 at the time of knitting. As above, dip dyeing is carried out using ordinary dyeing equipment, the back side of the knitted fabric is raised using a needle cloth raising machine or an emery raising machine, and then the stitches are dyed by dry heat pickling or wet heat pressurization on the front side of the knitted fabric. The smooth surface is crushed and smoothed, and then a resin composition is discontinuously thinly applied and fixed, or a colored resin composition having a hue and concentration different from that of the dyeing is discontinuously applied thereon, and then This is a processing method characterized by applying an uneven pattern to the surface using an embossing machine or the like using heat and pressure.

Here, by shrinking the knitted surface width of the tricot knitted fabric by dry heat or wet heat shrinkage treatment, and by increasing the number of wales to 200 or more of the knitted fabric, the surface of the knitted fabric is made uniform and has a unique thickness. It becomes a sheet-like material with a texture.

Next, dyeing is carried out using regular dyeing equipment, and the back side of the knitted fabric is raised using a commonly used raising machine to further increase the thickness, eliminating the need for backing and creating a texture similar to that of fur, as well as heat retention and cold protection effects. .

Next, the knitted lichen is heated and pressurized with calendering, liner, etc. in an absolutely dry state or with a certain amount of moisture added to make the stitches even smoother, so a resin composition or a colored resin compound is further applied. However, the resin does not penetrate into the stitches or the fibers constituting the knitted fabric, making it possible to fix the resin uniformly.

Even more effectively, by treating with a surfactant or synthetic resin liquid before heating and pressing, it is possible to create a texture that is smoother, more glossy, more matte, or has better rebound properties than after heating and pressing. You can get a good one.

Furthermore, by discontinuously applying the resin composition or colored resin composition, the breathability is not impaired and the appearance becomes leather-like without giving the impression of a knitted fabric.

Furthermore, by using two or more layers of colored resin compounds with different hues, concentrations, etc., it is possible to obtain a deep appearance, and the amount and pattern of coating can be changed relatively freely, resulting in improved breathability. It is also possible to bring about a change in degree, and it is possible to obtain a material that is waterproof, breathable, heat-retaining, and cold-proof.

Next, irregularities are applied to this surface by heating and pressurizing, such as embossing, and the flexible sheet whose thickness has been smoothed in this way has sharp embossing, and has elasticity while maintaining the durability of the mold. You can get something that can withstand washing and dry cleaning well.

In addition, by brushing the back side of the textured surface using heat and pressure to make the hairs stand up and line up, the product has a fur-like feel and further enhances its heat-retaining effect. It has a leather-like appearance and retains the elasticity, breathability, and drapability characteristic of knitted fabrics, making it ideal as a material for clothing as it is both waterproof and cold-proof.

The present invention will be specifically described below using examples.

Example l Front polyester long fiber 50d back
Polyester long fiber 50d Mitrile Rayon long fiber 50d A long fiber tricot knitted fabric made of three reeds with the above fiber composition and consisting of 28 wales and 75 courses is processed with a moist heat setting process to create a knitted fabric with 58 wales and 75 courses.
The number of courses is 60, and the front and back ester long fibers are dyed with a disperse dye using a beam dyeing machine, and then the middle rayon long fibers are dyed using a reactive dye using a wince dyeing machine.

Perform halo soaping and dry with a suction drum dryer.

Next, the middle rayon long fibers are raised twice using a needle cloth raising machine so that the thickness is 0.7 tan, and the final setting is performed using a setter with pins.

After that, the polyester long fibers on the surface of the knitted fabric were heated to a temperature of 1.
Calendering was carried out twice at 80°C at a pressure of 50 kg/CrfL speed Ion/min to thoroughly crush the stitches and make it smooth, and then the two-component reactive urethane resin was adjusted to a viscosity of 500 cps (solid content 17%) with ethyl acetate. Then, using a gravure coating machine with a roll depth of 100μ and 80 mesh, apply 40g to 509/rrl, and then gravure coat a colored urethane resin solution with a viscosity of 300 cps (solid content 15%) at 10 to 20 g/m. Apply it to an aniline tone using a tool and dry it.

Next, Scotchgard FC-214 (manufactured by Sumitomo 3M) 2
Bun, Sunstat ES-205 (manufactured by Sanyo Kakai Kogyo KK)
It is immersed in a 1% mixed solution, subjected to calibration processing and dried at a reduction rate of too%, and cured at 140° C. for 3 minutes.

Further, embossing is performed using a 180'C, I ball force 30kg/cIrL pore engraving roll to give an uneven pattern to the smooth resin coated surface.

The sheet-like material thus obtained is lightweight (weight: 19
0g/m) has a thick feel, retains the characteristics of tricot knitted fabric such as flexibility, elasticity, and breathability, and has waterproof and windproof properties (warmth retention), and has the appearance of tricot knitted fabric. It has a unique texture with a leather-like texture.

The sheet-like material obtained by the present invention has the above-mentioned characteristics, and has a water pressure resistance of 100 to 1507+! Water repellency 90 (measurement method JISL-
1079) Air permeability Gurley air permeability measuring machine 1 second/200c
c, it is ideal as a material for cold-weather clothing such as coats, jumpers, and gloves.

Example 2 Front: Number of 50d polyester long fiber filaments: 17 Back: Number of 50d polyester long fiber filaments: 17 Middle: Number of 50d polyester long fiber filaments: 48 A three-reed long fiber tricot knitted fabric with the above fiber composition of 28 wales and 75 courses was used. Then, in the same manner as in Example 1, 56 wells x 57 courses were prepared using a wet heat setting, dyed with a disperse dye using a jet dyeing machine (Uniace), thoroughly reduced and cleaned, and dried.

Next, the middle polyester long fiber (number of filaments is 4)
8) is made into a raised knitted fabric with a thickness of 0.5 mm using an emery raising machine.

Next, it is immersed in 2 volumes of an aqueous solution of LSOFT SP (manufactured by Ippo Co., Ltd.), and subjected to calibration processing and drying at a reduction rate of loo%.

After that, a certain amount of moisture is applied using steam, and the surface of the knitted fabric is heated to a temperature of 16.
Calendering was carried out under the conditions of 0°C pressure 3okg/cIrL and speed 5m/min to make a smooth surface.Urethane elastomer (solid content 15%, viscosity io o o
CPS resin liquid airless spray method 30.9
/m%l- and dry.

Then, embossing is performed using a matte roll (sandblasting particle size 200) at a temperature of 180° C. and a pressure of 30 at a ratio of 9/crfL.

The finished product has a unique thick wall appearance that combines drapability, breathability, windproof and waterproof properties.

Water pressure resistance 100 degrees (measurement method JISL-1079) Example
3 Front 40d polyamide long fiber back 40d polyamide middle 75d Cupra long fiber Using a three-reed tricot long fiber knitted fabric with the above fiber composition and 28 wells and 0 courses, 62 wells are formed by wet heat shrinkage.
The 55-course, front and back polyamide long fibers are beam-dyed with an acid dye, and then the middle cupra long fibers are wince-dyed with a reactive dye, thoroughly soaped, and dried.

Next, the middle cupra long fibers were raised twice using a needle cloth raising machine to a thickness of 0.9 mm, and a certain amount of moisture was applied to the surface of the knitted fabric using steam, at a temperature of 160°C, a pressure of 20 kg, and a crn speed of 20 m/min. Smoothing is performed using a Schreiner calender below, and urethane resin liquid (solid content 20φ viscosity 500 cps) is coated on the smooth surface with a gravure coating machine for 30 to 30 minutes.
40 g/lri' was coated and dried, and then a colored urethane resin solution, solid content 15%, viscosity 300 cps was coated using a gravure coater to give an aniline tone and dried.

Next, Scotchgard FC-214 (manufactured by Sumitomo 3M)
It is immersed in lφ aqueous solution, squeezed with a mangle to a squeezing rate of 150, dried, and then cured at 150°C for 3 minutes.

Furthermore, the temperature 170'C and the pressure 30kg/cf are applied to the surface where the resin liquid is applied.
Add an uneven pattern with the rL pore carving matte roll.

Furthermore, brush the cupro fibers on the back of the knitted fabric.

The product thus obtained had a unique texture with a thicker feel and better drape properties, a fur-like feel on the back side, and a leather-like appearance.

Water pressure resistance 100-150 mrIL (measurement method JISL-1
079) Water repellency 90 () Air permeability 200CC1 second (measured by Gurley air permeability meter)

Claims (1)

[Claims] 1 Shrink the knitted fabric width by dry heat or wet heat shrinkage treatment of Atsumachi plastic fiber or a knitted fabric mainly made of this, especially a tricot knitted fabric, and make the number of wales 200φ or more at the time of knitting, and dye and raise it. a first step, a second step of smoothing the surface of the knitted fabric by applying heat and pressure, and a third step of discontinuously applying a resin composition to the smooth surface;
A method for treating a knitted fabric, further comprising a fourth step of applying an uneven treatment to the surface to which the resin composition is applied.