JPS62104982A - Printing of raised fiber sheet having fine raised fiber - 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 is for printing and coloring the napped surface of a napped fiber sheet having fine napped fibers in a good color tone with excellent color fastness' without impairing the texture. This relates to a printing method that forms a surface.

[Conventional technology]

BACKGROUND ART Conventionally, a method of dyeing a raised surface of a sheet-like material having a fiber raised layer into a pattern by printing is already known.

For example, Japanese Patent Publication No. 47-21279, Japanese Patent Publication No. 57-c
+53s5f publication describes a clear coloring method that dyes the raised surface of pile carpets, fur, etc. up to the root of the raised fur by printing and does not bleed, as described in Japanese Patent Application Laid-Open No. 59-116448! The publication describes a method of dyeing the fluff by printing on a suede-like sheet having an IMIR fiber nap surface with a fineness of 0.13 dr, and furthermore, JP-A-60-21981 discloses a printing paste containing a substance that dissolves fibers and a dye. A method is described in which, after applying an agent, heat treatment is performed to dye the printed area and to shorten and shorten the fluff fibers.

[Problem that the invention seeks to solve]

Conventionally, sheet materials having a napped fiber surface have been colored by a printing method when the napped fibers are relatively thick, such as pile carpets and fur. Therefore, although printing does not bring about major changes in the napping state or the texture of the sheet, the fibers used are extremely thin, for example 0.05
If the napped fiber surface has a fineness of less than dr, the bending rigidity of the fiber is small, so even if the size agent is removed after printing as in the past, it is not possible to restore the napped fiber surface to a sufficiently restored state. For example, the feel of fluff in the printed and non-printed areas,
The fluttering property of the fluff and the appearance of the fluff when touched with the hand deteriorate significantly. And if you try to emphasize the three-dimensional effect through textile printing, the tendency for the problem to worsen will become even greater.

At the same time, the hardness and waxiness of the dyed JL also deteriorates. Furthermore, with conventional adhesives mainly based on water-soluble resins, bleeding occurs due to dyeing, making it difficult to achieve a finish with clear outlines. On the other hand, a method of fixing the colorant by using a water-insoluble resin as a glue has been used, but this method has problems such as impairing the texture of the sheet.

[Means for solving problems]

The present invention is a textile that does not impair the texture of the sheet by printing, has a clear colored outline and a three-dimensional appearance, and has high dyeing friction fastness, especially dyeing M rubbing waxiness when wet. It's in the law.

That is, the present invention applies a printing method to at least one surface of a substrate formed by containing an elastic polymer in a fiber structure mainly composed of fine fibers and/or the east thereof, on the fiber raised surface formed by lIJ & fiber ends of the constituent fibers. When coloring with , the main material of the printing paste is water-insoluble in the final solidified state, and the Young's modulus YR of the film obtained by forming the printing paste into a film is
0°] in the range of 5 to 0.01hg7wJ and does not exceed the Young's modulus YP of the elastic polymer contained in the base material, a water-insoluble or poorly water-soluble coloring agent, a crosslinking agent as necessary, and an organic This is a printing method for a napped fiber sheet having napped copy #4H fibers, which is characterized by applying an aqueous composition containing a solvent and a surfactant to the napped surface to form a printed colored surface fixed together with the napped fibers. .

The napped fiber sheet having fine napped fibers of the present invention can be used, for example, in Japanese Patent Publication No. 55-so443-, Japanese Patent Publication No. 56-162.
35, JP-A-54-76801, etc. are applicable. That is, before or after the multicomponent fiber m is made into fine fibers, an elastic material such as a polyurethane elastomer is added to a fiber structure such as an entangled nonwoven fabric of multicomponent fibers made of at least two types of polymers having different properties. (2) This is a napped fiber sheet in which at least one surface of the substrate obtained by containing the coalescent is treated to form a fiber napped surface using a sand vapor or the like to form so-called suede-like @fine fiber napped surfaces on the surface of the substrate. Furthermore, the napped fiber sheet may be made into a product by dyeing, softening, etc.

The fine fibers of the present invention are single fibers or fine fiber bundles having a fineness of less than 0.1 denier, preferably in the range of 0.05 to 0.0001 denier.

If mli& is thicker than 0.1 denier, the texture of the fiber sheet will change, and after printing, there will be a mixture of areas where the napped fibers are fixed and areas where they are not, impairing the appearance and feel. I don't like it.

On the other hand, if the denier is less than 0.0001 denier, the raised state of the printed area and the non-printed area cannot be clearly distinguished, resulting in a lack of three-dimensional effect.

Next, as for the printing paste used in the present invention, the main material of the paste is water-resistant in the final solidified state, and the Young's modulus YR of the resin film is 0.15 to 0.011 g/l.
It is an aqueous sizing agent made of a flexible resin that falls within the range of an and does not exceed the Young's modulus of the elastic polymer, YP.

The main material of the adhesive is, for example, a urethane resin or an acrylic ester copolymer. The sizing agent is used as it is or a film is formed by adding a crosslinking agent to the sizing agent, and the Young's modulus YR of the sizing agent measured with the film is in the range of 0.15 to 0.0+kp7-, and is 0.15 kq/ If the adhesive has a large puffer ratio of M or higher, the printing surface will be hard and the scale will not feel different from other parts, and the printing surface will have poor flexibility, causing the printing surface to float away from the substrate. Undesirable. On the other hand, 0.
A sizing agent with a small puffer ratio of less than 0.01ky7 does not simply increase the fixation of the colorant by 1, but increases the waxiness of the friction chamber. The coloring agent added to the sizing agent is at least one selected from water-insoluble or poorly water-soluble inorganic pigments, organic pigments, and dyes.

The aqueous composition for textile printing is prepared by adding an aqueous thickening agent, a coloring agent, and, if necessary, a solvent such as mineral turpentine, a crosslinking agent, a surfactant, and the like. Then, the prepared aqueous printing composition is applied to textiles using a commonly used printing machine, such as a rotary screen printing machine, a roller printing machine, a flat automatic screen printing machine, a traveling screen printing machine, a hand screen printing machine, etc. Print on the raised surface. To after printing
.

Steaming or heat treatment is performed at any temperature in the range of ~150°C to fix the coloring agent and the napped fibers with the main resin of the sizing agent. After that, the raised surface of the fibers other than the printed surface is smoothed by brushing or light puffing with sandpaper, and the raised surface of the fibers damaged by printing etc. is finished, and the smooth surface of the printed material is improved. This creates clearer boundaries and increases the effect of enhancing the three-dimensional effect.

〔Example〕

Next, embodiments of the present invention will be specifically described with reference to Examples.

In addition, unless otherwise noted, all parts and percentages refer to weight.

Example 1 Mixed polyurethane of polyester-based polyurethane and polyethylene ether-based polyurethane was added to an entangled nonwoven fabric of nylon fine fiber bundle fibers made by water dyeing approximately 620 water-dyed nylon fine fibers having an average single fineness of 0.003 to 0.005 denier. (Young's modulus of polyurethane film at 20°C: 1.94 kg/mA) is impregnated into a porous structure, and the surface of the substrate obtained is puffed to create a suede-like fiber having a fiber nap layer formed at one end of the nonwoven fibers. Sheet CI3 was obtained. This suede-like fiber sheet was first dyed dark blue using a metal complex dye, and after drying,
Printing was performed using the following printing method.

Aqueous composition for textile printing 5eika Pa5ts AP-145% (manufactured by Dainichiseika Chemical Co., Ltd., trade name) Mineral turpentine 36% Blue organic pigment 4% Emafix (
Crosslinking agent) 3% (manufactured by Dainichiseika Chemical Co., Ltd.,
Product name) Water
12% (However, the main material of the glue is an acrylic ester copolymer, and the Young's modulus of the copolymer film at 20°C
, os kq/Wi) Using a rotary screen printing machine, the above-mentioned textile printing composition was subjected to a pressure of 1. Printed at 0 kg/d and at a temperature of 130°C.
Heat treated for minutes. Thereafter, the raised side was brushed to obtain a smoothed printed fiber sheet. The resulting product had a clear print of not only the outline of the pattern but also the fine lines, and had excellent three-dimensional color impression. Furthermore, the hardness of the steel was excellent, with a grade 4 or higher.

For comparison, a printing composition in which the sizing agent was a polyvinyl alcohol-based resin and the coloring agent was a metal complex dye was printed on the raised side of the suede-like 8m sheet of Example 1. The hair was steamed, washed with water, dried, and then the raised side was brushed to style the hair. In the obtained product, not only the outline of the pattern but also the thin lines were unclear, and the printed area had a slightly rough texture. Furthermore, the friction chamber waxiness was as low as 2nd to 3rd grade.

Example 2 The suede-like fiber sheet [■] of Example 1 was first dyed dark brown by a dyeing method using a metal complex dye, dried, and then dyed with a polyurethane paste (Young's modulus o of polyurethane dry coating, 13 kg/ An aqueous printing composition containing NA) and a reddish-brown organic pigment was printed using a rotary screen printing machine and heat-treated at 130° C. for 3 minutes. Thereafter, the raised surface was brushed to obtain a smoothed printed fiber sheet. What was obtained was not only the outline of the pattern, but also the outline of the pattern.
Even fine lines were clearly printed, the product had excellent three-dimensional color appearance, and had excellent abrasion resistance with a hardness of grade 4 or higher.

〔Effect of the invention〕

The napped fiber sheet printed according to the present invention has clear outlines in the printed and non-printed areas, has a three-dimensional color appearance, has excellent friction chamber waxiness in the printed area, and A product with a good texture of a napped fiber sheet can be obtained.

Patent applicant RiRashi Co., Ltd. Daiwa Patent Attorney Ken Honda

Claims (1)

[Scope of Claims] 1. Fiber naps formed by fiber ends of constituent fibers on at least one surface of a substrate comprising an elastic polymer in a fiber structure mainly composed of fine fibers and/or bundles thereof. When coloring a surface by a printing method, the main material of the printing paste is water-insoluble in the final solidified state, and the film obtained by forming the printing paste has a Young's modulus Y_R of 0.15 to 0. 0
A water-based glue in the range of 1 kg/mm^2 and not exceeding the Young's modulus Y_P of the elastic polymer, a water-insoluble or poorly water-soluble colorant, and optionally a crosslinking agent, an organic solvent, and a surfactant were added. A method for printing a napped fiber sheet having fine napped fibers, which comprises applying an aqueous composition to the napped side to form a printed colored surface that is fixed together with the napped fibers. 2. The printing method according to claim 1, wherein the fine fibers have an average single fineness in the range of 0.05 to 0.0001 denier. 3. The printing method according to claim 1, wherein the main resin of the sizing agent is an acrylic ester copolymer.