JPH0323666B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of the Invention The present invention relates to a fabric made of natural fibers, regenerated fibers, or thermoplastic synthetic fibers, which has vertical wrinkles (vertical wrinkles) with different luster and a clear three-dimensional effect on the surface. ) relates to a method of applying patterns and creating treated fabrics with a unique appearance.

B. Prior Art and Problems Conventionally, there have been embossing, vertical stitching, and the like as processing methods for creating vertical wrinkle-like uneven patterns on fabric.

In the case of embossing, processing at high temperature and pressure is necessary to maintain durability, and for this reason,
The resulting product tends to have a hard texture.

In addition, it is difficult to produce an engraved roll that expresses natural vertical wrinkles, and the method using an engraved roll results in a repetitive and monotonous pattern.

In the case of vertical wrinkle processing, natural vertical wrinkles can be obtained, but the result is simply folds and wrinkles, and a processed product with a clear three-dimensional effect cannot be obtained.

C Means for solving the problem and effects As a result of various studies, the present inventors have found that after impregnating or laminating a fabric made of thermoplastic synthetic fibers with a thermoplastic resin in advance, if necessary, the fabric is slightly stretched in the width direction. By shrinking and maintaining the flatness of the fabric, we create random vertical wrinkles in a free state in the longitudinal direction, press the wrinkled surface against a heated mirror roll, and perform felt calender processing.
In addition, in the case of fabrics made of natural or recycled fibers, after being impregnated with thermoplastic resin or laminated in advance,
It has been discovered that by forming wrinkles and heat-setting, it is possible to produce processed products with a natural wrinkle pattern that has different gloss on the surface, has a clear and three-dimensional effect, and is durable.

D Summary of the Invention In the present invention, fabrics made of natural fibers include cotton, linen, and wool fabrics; fabrics made of recycled fibers include rayon; fabrics made of thermoplastic synthetic fibers include, for example, polyester. Fabrics made from these fibers include woven fabrics, knitted fabrics, nonwoven fabrics, and the like.

The present invention can produce remarkable effects, particularly when carried out by impregnating or laminating a brushed thermoplastic synthetic fiber fabric with a resin in advance.

Thermoplastic resins that can be used to impregnate or layer the fabrics listed above include polyurethane, vinyl chloride, acrylic, and polyester resins, and impregnation and layering can be done using emulsions or solutions of these resins. , pellets, etc. may be appropriately selected and used. In addition, ordinary methods such as impregnation, reverse coating, knife coating, lamination, etc. can be used for processing, and a coloring agent can also be mixed during these processings.

In the present invention, as a means of slightly shrinking the above-mentioned fabric in the width direction to create a product free of random vertical wrinkles, the present invention is capable of mechanically shrinking the fabric in the width direction, and This method uses a method in which air is blown intermittently at various locations to randomize the wrinkle effect.

Then, when heat setting is performed using a high-temperature mirror roll/felt calendar with vertical wrinkles created in the fabric, the parts that were in direct contact with the rolls and the parts that were indirectly affected by the heat, as shown in the drawings below. Even if they are both heat-set, the remaining bending angles are different, resulting in a three-dimensional vertical wrinkle pattern that is not simple.

The temperature of the mirror roll is 100℃ or higher, 150 to 220℃.
The temperature range is usually appropriate, but it is a condition that can be determined by considering the properties of the fabric, the thermal properties of the impregnated and laminated resin, etc.

After felt calendering, e.g.
Tentering is performed at 150℃ to unwrinkle and restore the wrinkle shrinkage of the fabric.

The characteristics of the product obtained by the method of the present invention will be explained with reference to FIGS. 1 to 3.
In the figure, the portions 1a, 1b, 1c, and 1d of the fabric A that are in direct contact with the roll B are, after unwrinkling, the edge portions of the directly contacting portions, as shown in FIG.
{1a(1), 1a(2)}, {1c(1), 1C(2
)},
Since 1d1 creates an acute step, the portion forms a concave plane with respect to the fabric, but the bending angle at portion 1b is an obtuse angle.

Also, in Fig. 1, if we look at the parts that are not in direct contact with the roll, the folds between 2b and 2c, between 2d and 2e, and between 2f, 2g, and 2h are the second folds.
As shown in the figure, it is an obtuse angle. The portions 2a, 2b, 2e, 2f, and 2h connected to the step become convex planar portions of the product fabric or portions similar thereto.

Furthermore, the obtuse angles at both ends of 1b and the obtuse angles at both ends of 2g, etc., are different in the thermal effects they receive in the state shown in FIG. 1, so even if they are obtuse angles, they are not the same angle. This variety of angles (undulation) is one of the reasons why the product of the present invention is unique.

In addition, when using a raised fabric, areas 1a, 1b, and 1c in the drawing above (the areas pressed against the roll) are flattened and become glossy concave surfaces, while other areas are exposed to heat. Depending on the effect, naps remain, forming convex planes or similar areas, resulting in a surface with a clear vertical stripe pattern.

E. Effects of the Invention As can be understood from the above description, the product of the present invention has a natural, non-monotonous vertical wrinkle pattern because the pattern is not repeated as in the case of conventional embossing. This pattern is clear, three-dimensional, and has excellent durability.

F Examples Example 1 As the material fabric, polyester knit double-sided brushed product (large brushed surface, small brushed back surface) 63 denier/
108 filament (single yarn 0.58 denier), cloth width 150
cm, impregnated with 2% polyurethane resin,
After crease creation, heat fixation was performed.

Felt calendar conditions Mirror roll temperature: 200℃ Felt pressure before and after: 4.0Kg/cm each ² Processing speed: 6m/min Width shrinkage rate: 65% Slit spacing: 2.0cm Tentering conditions 120℃ x 60 seconds Tenter width: 150cm Above The raised fabric processed under these conditions was a suede-like product with a unique wrinkled pattern.

Even after this product was subjected to a 50-minute dry cleaning test three times, the applied vertical wrinkle pattern did not change in appearance and could be used for practical purposes, and there was only a slight change in dimensions due to washing. It was hot.

Example 2 A urethane wet layer with a solid content of 50 g/m ² was formed on a rayon woven fabric (cloth width 120 cm) as a material fabric, and an adhesive layer of 15 g/m ² was further applied on top of it using a release paper transfer method. After transferring a 5 g/m ² urethane dry layer, it was impregnated with an 8% aqueous solution of amino-modified dimethylpolysiloxane emulsion, dried, and then wrinkled and
Heat fixation was performed.

Felt calendar conditions Mirror roll temperature: 170℃ Felt pressure before and after: 4.0Kg/cm each ² Processing speed: 6m/min Width shrinkage rate: 65% Slit spacing: 2.0cm Tentering conditions: 120℃ x 60 seconds Tenter width: 110cm Above In the product processed under these conditions, the part of the product that came into direct contact with the mirror roll lost the squeegeeing of the release paper, resulting in a shiny pattern, while in other parts, the squeegeeing of the release paper remained, creating a more unique surface.

The appearance changes and dimensional changes in the washing test were also similar to those in Example 1, and were sufficiently usable for practical use.

[Brief explanation of drawings]

FIG. 1 is a sectional view for explaining the state in which the fabric is pressed against a mirror roll in the method of the present invention. FIG. 2 is a cross-sectional view for explaining the relationship between the wrinkles in the state of FIG. 1 and the wrinkle pattern on the product. FIG. 3 is a plan view for explaining the vertical wrinkle pattern of a product produced by the method of the present invention. In the figure: A is the fabric, B is the mirror roll. A indicates a convex plane part of the product, B indicates a step, C indicates an inclined part, and D indicates a convex plane part.

Claims (1)

[Claims] 1. A fabric made of thermoplastic synthetic fibers is shrunk in the width direction, and air is intermittently blown at various points from above and below the fabric while maintaining its flatness. By creating vertical wrinkles in the same condition, and then pressing the wrinkled surface against a heated mirror roll and performing felt calender processing, the surface has a different gloss and a clear, three-dimensional vertical wrinkle pattern. Method of manufacturing fabric. 2. In claim 1, a fabric made of thermoplastic synthetic fibers is impregnated with a thermoplastic resin or laminated, and then the fabric made of thermoplastic synthetic fibers is shrunk in the width direction. While maintaining the flatness of the fabric, air is intermittently blown from the top and bottom of the fabric at various points to create vertically long wrinkles in a free state.Then, the wrinkled surface is pressed against a heated mirror roll and is placed in a felt calender. By processing,
A method of manufacturing a fabric having a vertical wrinkle pattern with a clear and three-dimensional effect and having different luster on the surface. 3. After impregnating or laminating a fabric made of natural fibers or recycled fibers with a thermoplastic resin, the fabric is shrunk in the width direction and, while maintaining its flatness, is cut from the top and bottom of the fabric. Air is intermittently blown in various places to create vertically long wrinkles in a free state, and then the wrinkled surface is pressed against a heated mirror roll to perform felt calendering, which creates a difference in gloss on the surface. , a method for producing a fabric having a clear and three-dimensional vertical wrinkle pattern.