JPS5929716B2 - Iridescent pattern revealing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to fabrics and knitted fabrics made of natural fibers, non-thermoplastic synthetic fibers, or blends and interwovens of both, as well as fabrics such as velveteen, kohl, flocked, and brushed fabrics that have a three-dimensional effect. The present invention relates to a method for revealing a pattern of shapes.

Conventionally, woven or knitted fabrics with an iridescent pattern have been made by dyeing the warp and weft yarns, and the difference in hue has revealed the pattern, and the pattern has been expressed by a jade weave or other woven structure.

However, it has drawbacks such as requiring yarn dyeing in advance, requiring a long production period, high production costs, and restrictions on pattern expression.

The present invention was invented to solve the above-mentioned drawbacks.
It is possible to create any three-dimensional iridescent pattern.

In the present invention, the above-mentioned woven or knitted fabric is plain-dyed with a dye that can be discharged, and then an arbitrary pattern is printed using a printing paste containing a self-crosslinking thermoplastic resin, a dye or a pigment, and a discharge printing agent. Dry.

This woven or knitted fabric is then treated in steam to discharge the pattern.

Subsequently, this woven or knitted fabric is passed through a heated roll under pressure to flatten the entire surface.

Next, the woven or knitted fabric is washed in a solution containing an absorbent softener.

In the woven or knitted fabric treated in this way, only the printed areas are flattened, the non-printed areas are restored to their original appearance, and are further softened by the absorbent softener, resulting in a height difference between the printed and non-printed areas. As soon as it appears, an iridescent effect appears due to the difference between the color of the stamped area and the color of the non-imprinted area.

In addition, in pile fabrics such as velveteen, kohl-ten, raised, and flocked fabrics, an iridescent pattern with an even more three-dimensional effect appears.

Conventionally, embossing rolls have been applied as a method of adding heights (unevenness) to woven or knitted fabrics, but with this method, although the heights (unevenness) pattern can be revealed, it is difficult to color the embossing portions.

Further, the coloring method using an embossing roll, in which the lower part is colored with a pressing die, only colors and cannot be discharge printed.

That is, although it is possible to dye a beige dyed fabric black, it is impossible to dye a black dyed fabric beige.

In addition, this method has the disadvantages that engraving the embossing roll is extremely expensive, that it takes a long time to manufacture, that engraving the pattern requires a pair of female and male rolls, and that it is impossible to create complex patterns. Therefore, it is difficult to put it into practical use from all aspects, including technical, economic, and responsiveness to trends.

Furthermore, in the case of the embossing application method, it is necessary to pat the entire woven or knitted fabric with synthetic resin, dry it, and then press it, resulting in a product with a hard texture and poor durability.

In particular, the durability of pile materials poses a practical problem.

Furthermore, Japanese Patent Publication No. 45-2800 discloses a concave-convex shrink printing method in which a three-dimensional concave-convex pattern is formed on a fabric, but in this method, when a thermoplastic synthetic fiber fabric is printed and dried under no tension, the printed area is A method of expressing a permanent uneven pattern by printing on a thermoplastic synthetic fiber fabric with a printing paste that creates concavities and convexities in the non-printed areas, and then heat-setting the fabric at the required temperature in a tension-free state. However, this method is limited to thermoplastic synthetic fibers and cannot be carried out when the fabric is composed of natural fibers or non-thermoplastic synthetic fibers, and the unevenness expressed on the thermoplastic synthetic fiber fabric is also difficult to implement. As shown in FIG. 1, the non-printed portion a is raised in the shape of a mountain, and the uneven boundary between the printed portion C and the non-printed portion a is not clear.

However, since the present invention can be applied to any printing method such as general roller printing or auto screen printing, it has the advantage that any pattern can be applied economically and in a manner that can quickly respond to trends.

Any hue can be freely selected for the hue difference between the printed and non-printed areas, which is important for making the iridescent effect visible, and for the texture, a sufficient amount of self-imprint can be used to make the difference in height visible. By applying cross-linked thermoplastic resin only to the printing area and by washing the absorbent fabric softener, an extremely good texture and an iridescent effect due to the difference in height are realized, and as for durability. It can fully withstand general washing and dry cleaning methods, and is a completely new method for revealing iridescent patterns that eliminates all of the drawbacks of conventional products.

The present invention can be applied to natural fibers such as cotton, wool, silk, and linen, non-thermoplastic synthetic fibers such as cotton, cupro, triacetate, and polyacrylic, and fabrics made of blends and weaves thereof. Stamping part d through the roll
The non-printed area e was pressed as shown in Figure 2A, and then treated with a cleaning solution containing an adsorbent surfactant to form the area shown in Figure 2B.
As shown in , since the non-printed area e is restored to the original appearance of the woven or knitted fabric, the boundary and height difference between the printed area d and the non-printed area e are clearly visible.

To describe the present invention in more detail, the above-mentioned woven or knitted fabric is dyed plainly with a dye that can be discharged.

Next, a dye was added to a paste made of a self-crosslinking thermoplastic resin and an 0/W emulsion that can fully exhibit the effects of the present invention.
Impregnate with discharge printing agent and print.

In this case, the self-crosslinking thermoplastic resin is preferably a polyacrylic acid ester emulsion, and the amount used as an active ingredient can be in the range of 5 to 30%, but it is 10 to 25%.
% is preferred.

The dye to be used next must be resistant to the discharge printing agent, and it is also possible to use pigments that are resistant to the discharge printing agent.

As a discharge printing agent, sodium formaldehyde sulfoxylate (NaH8O□・CH2O・2H20) or zinc formaldehyde sulfoxylate (Z n (lSO2・C
H20) 2) is appropriate, and the usage amount is 5 to 20%;
use

After drying, the printed woven or knitted fabric is kept at 100 to 180°C.
treatment in steam for 5-20 minutes, then heated to 100-250℃
It is passed through a hot roll under a pressure of 5 to 50 tons.

This treatment flattens the entire surface of the woven or knitted fabric.

In this case, the fibrous knitted fabric is treated in steam at about 1 in the front and has a humidity higher than the constant moisture content, so this flattening process produces the maximum effect.

In this process, the printed area is permanently flattened by the action of the self-crosslinking thermoplastic resin, and the non-printed area is temporarily flattened, but is restored to its original state by a subsequent washing process.

In addition, in order to improve the durability of the printed part in a flat state, 120 to 1
Heat treatment at 80° C. for 3 minutes to 20 seconds is effective.

The fabric is then treated in a washing bath containing an adsorbent surfactant.

In this case, weak cationic surfactants such as alkyl-1-methylbenzyl ammonium chloride are suitable as adsorbent surfactants.

This increases the restoration (swelling) of the fibers in the non-printed areas, resulting in a woven or knitted fabric with an iridescent pattern that is extremely soft and has a good texture.

Examples of the present invention will be described below. Example 1 A 100% cotton twill fabric was treated with a general bleaching method and dyed plain to deep navy blue with a dye that can be discharged. Polyacrylic acid ester emulsion (purity 35%) 30 1 Formaldehyde sulfoxylic acid Zinc 10 pigments (
Yellow) (purity 30%) 10 0/W emulsion remaining amount meter
100 After performing roller printing with printing paste of the above composition, ) 100°C
Treated for 10 minutes in the steam of
After passing under a pressure of 1,000 ton, heat treatment was performed (160° C. for 3 minutes), the sample was treated with a washing solution containing 2% alkyldimethylbenzyl ammonium chloride at 50° C. for 20 minutes, and dried.

As a result, an iridescent pattern consisting of a yellow pattern on a dark blue background with a bulging and flexible three-dimensional effect was revealed in the non-printed area.

Example 2 After under-bleaching an acetate raised product, a deep red plain dyeing was carried out using a disperse dye that can be discharged. green)
70/W emulsion
Remaining amount meter 100 After performing screen printing with printing paste of the above composition, 100℃
for 10 minutes in steam at 175°C, and then in steam at 175°C for 7 minutes.
After being treated for 1 minute and passed through a 50 ton hot press roll at 150°C, the same treatment as in Example 1 was performed.

The result was a soft, bulging iridescent pattern with a three-dimensional feel, consisting of a green pattern on a dark red background.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an uneven pattern obtained by a conventional uneven shrinkage printing method, and FIG. 2 is a sectional view showing an uneven pattern obtained by an iridescent pattern revealing method of the present invention.

Claims (1)

[Claims] 1 Natural fibers, non-thermoplastic synthetic fibers, or blends thereof;
Mixed woven fabrics and knitted fabrics are plain dyed with dischargeable dyes, printed with self-crosslinking thermoplastic resin and printing paste containing dyes or pigments and discharge dyeing agents, discharged in steam, and then heated. A method for revealing an iridescent pattern, which is characterized by flattening the entire surface by passing it through a pressure roll, and then treating it with a baking solution containing an adsorbent surface activator to restore the non-printed areas to the original appearance of the woven or knitted fabric.