阅读说明：本技术 数码静电植绒印花工艺 (Digital electrostatic flocking printing process ) 是由 刘庆云 单昶 于 2018-08-22 设计创作，主要内容包括：本发明公开了一种数码静电植绒印花工艺,包括铺设具有植绒面的第一基材；在所述植绒面上打印热升华墨水；对打印热升华墨水的所述植绒面进行热压复合和升华发色；完成印花,得到成品。其中,在第一基材的表面植绒,形成植绒面后打印热升华墨水或者直接采用植绒转印纸基材打印图案,并转印至含有植绒胶水的第二基材。本发明提供的数码静电植绒印花工艺在植绒产品表面直接打印、无需转印纸,并能采用热升华转印的方式进行印花,所得成品的色牢度得到进一步提升,用户体验好。(The invention discloses a digital electrostatic flocking and printing process, which comprises the steps of laying a first substrate with a flocking surface; printing thermal sublimation ink on the flocking surface; carrying out hot-pressing compounding and sublimation color development on the flocking surface printed with the thermal sublimation ink; and finishing printing to obtain a finished product. Wherein, at the surface flocking of first substrate, print thermal sublimation ink after forming the flocking face or directly adopt the flocking to transfer printing paper substrate and print the pattern to transfer to the second substrate that contains flocking glue. The digital electrostatic flocking printing process provided by the invention can be used for directly printing on the surface of a flocked product without transfer paper, and can be used for printing in a thermal sublimation transfer mode, so that the color fastness of the obtained finished product is further improved, and the user experience is good.)

1. A digital electrostatic flocking printing process is characterized by comprising the following steps:

s1, laying a first base material with a flocked surface;

s2, printing thermal sublimation ink on the flocked surface;

s3, carrying out hot-pressing compounding and sublimation color development on the flocked surface printed with the thermal sublimation ink;

and S4, finishing printing to obtain a finished product.

2. The digital electrostatic flocking printing process according to claim 1, wherein said step S1 is preceded by flocking the surface of the first substrate to form a flocked surface.

3. The digital electrostatic flocking and printing process according to claim 2, wherein the surface of the first substrate is flocked, a hot melt adhesive layer is coated on the back of the flocked surface to form an adhesive surface, and the adhesive surface is cut and compounded on the surface of the second substrate.

4. The digital electrostatic flocking and printing process according to claim 2, wherein the first substrate is a composite hot melt adhesive film, the surface of the composite hot melt adhesive film is flocked, and the composite hot melt adhesive film is cut and compounded on the surface of the second substrate.

5. The digital electrostatic flocking and printing process according to claim 2, wherein the flocking is performed by coating a treatment solution on the surface of the first substrate after flocking, or by drying the flocked material after soaking in the treatment solution and then planting the flocked material on the first substrate.

6. The digital electrostatic flocking printing process of claim 1 wherein the first substrate is a flock transfer paper substrate, the flock transfer paper substrate including paper and film.

7. The digital electrostatic flocking printing process according to claim 6, wherein the printing process further comprises mirror-printing sublimation ink on the surface of the flocking transfer paper substrate, and compositing a sublimation ink pattern on a second substrate containing flocking glue.

8. A digital electrostatic flocking process according to claim 3, 4, 7 or 8 wherein the first substrate comprises paper, fabric, film or nonwoven; the second base material comprises fabric, non-woven fabric, paper, metal, wood, ceramic and acrylic board.

9. The digital electrostatic flocking and printing process according to claim 4, wherein the composite hot melt adhesive film is TPU, EVA, PES, PA or PO hot melt adhesive film.

10. The digital electrostatic flocking and printing process according to claim 1, wherein the treatment fluid is a 0.2-2% aqueous solution containing one or more of PVA, PAC, sodium alginate, carboxymethyl cellulose, starch, and the like.

11. The digital electrostatic flocking printing process according to claim 1, wherein the device for hot-press compounding and sublimation coloring is a press or a roller; the temperature of the hot-pressing compounding and the sublimation color development is 180-220 ℃, and the time is 15-60 s.

Technical Field

The invention belongs to the technical field of printing and dyeing, and particularly relates to a digital electrostatic flocking printing process.

Background

The electrostatic flocking is a new high-tech technology for planting short fiber fluff on the surface of grey cloth or other carriers by using a high-voltage electrostatic field. The flocking product has the characteristics of strong stereoscopic impression, wear resistance, heat preservation, capability of improving the grade of the product and the like, and the used raw materials are nontoxic and harmless, so that the flocking product is a fluff product with unique style, soft hand feeling and bright color.

The flocking printing products on the market at present are mostly pure colors or only are the simple combination of several kinds of colors, and the pattern color is comparatively monotonous, and its design and color mainly implant the fine hair of different colours respectively after through silk screen chromatography coating glue and form. The existing literature reports that flocking product printing is realized through thermal transfer printing, a thermal sublimation disperse dye is required to be mixed with flocking glue, then the flocking glue is coated on the surface of a fabric through silk screen chromatography, white terylene or nylon villus is implanted, and after the flocking glue is dried, the disperse dye in the glue is sublimated through baking and heating to enable the villus to be colored. In addition, after colorless terylene and nylon fluff is implanted into the whole base cloth, transfer printing is directly carried out by compounding and hot pressing with transfer paper, although the method is simple to operate, the transfer paper is still needed, and the method is only suitable for large-area printing.

With the continuous development of computer technology in recent years, a digital technology printing which integrates mechanical and computer electronic information technology is gradually formed, and a new revolution is brought to the textile printing and dyeing industry; CN105583132A discloses a digital flocking method, which mainly comprises the following steps: manufacturing transfer paper special for thermal transfer printing; preparing a frictioning screen frame; scraping flocking glue; flocking; making a net for scraping the back glue; smearing hot melt adhesive; and (4) transferring. Compared with the traditional process, the invention can increase the number of the hair colors, so that the product is more diversified, but the printing process of the flocking product is complicated.

Disclosure of Invention

The invention aims to solve the problem of complicated printing process of a flocked product and provides a digital electrostatic flocking printing process.

In order to realize the aim, the invention discloses a digital electrostatic flocking printing process, which comprises the following steps:

s1, laying a first base material with a flocked surface;

s2, printing thermal sublimation ink on the flocked surface;

s3, carrying out hot-pressing compounding and sublimation color development on the flocked surface printed with the thermal sublimation ink;

and S4, finishing printing to obtain a finished product.

As a further improvement of the embodiment of the present invention, before the step S1, flocking is performed on the surface of the first substrate to form a flocked surface.

As a further improvement of the embodiment of the present invention, the surface of the first base material is flocked, a hot melt adhesive layer is coated on the back surface of the flocked surface to form an adhesive surface, and the adhesive surface is cut and compounded on the surface of the second base material.

As a further improvement of the embodiment of the present invention, a hot melt adhesive layer is coated on the surface of the first base material to form an adhesive surface, and the adhesive surface is cut and compounded on the surface of the second base material; flocking the bonding surface; the hot melt adhesive layer is a single-layer hot melt adhesive or a composite hot melt adhesive film.

As a further improvement of the embodiment of the present invention, the first substrate is a composite hot melt adhesive film, the surface of the composite hot melt adhesive film is flocked, and the composite hot melt adhesive film is cut and compounded on the surface of the second substrate.

As a further improvement of the embodiment of the present invention, the flocking manner includes blade coating the treatment solution after flocking on the surface of the first substrate, or immersing and drying the fluff in the treatment solution, and then implanting the fluff on the first substrate.

As a further improvement of an embodiment of the present invention, the first substrate is a flocked transfer paper substrate, which includes paper and film.

As a further improvement of the embodiment of the invention, the printing process further comprises mirror-image printing of sublimation ink on the flocked transfer paper substrate, and compounding the sublimation ink pattern on a second substrate containing flocking glue.

As a further improvement of the embodiment of the present invention, the first base material includes paper, a facing material, a film or a nonwoven fabric; the second base material comprises fabric, non-woven fabric, paper, metal, wood, ceramic and acrylic board.

As a further improvement of the embodiment of the invention, the composite hot melt adhesive film is a TPU, EVA, PES, PA or PO hot melt adhesive film.

As a further improvement of the embodiment of the invention, the treatment liquid is a 0.2-2% aqueous solution containing one or a mixture of PVA, PAC, sodium alginate, carboxymethyl cellulose, starch and the like.

As a further improvement of the embodiment of the invention, the device for hot-press compounding and sublimation color development is a press or a roller.

As a further improvement of the embodiment of the invention, the temperature for hot-pressing compounding and sublimation color development is 180-220 ℃, and the time is 15-60 s.

As a further improvement of the embodiment of the present invention, the flocked pile in step S1 is nylon or dacron.

As a further improvement of an embodiment of the invention, the length of the pile is 0.1-4 mm.

As a further improvement of the embodiment of the present invention, the hot melt adhesive may be spot-coated or top-coated on the surface of the first substrate.

As a further improvement of the embodiment of the present invention, the hot melt adhesive is polyurethane, acrylic, polyamide or polyethersulfone.

Compared with the prior art, the digital electrostatic flocking printing process provided by the invention can solve the problems of complicated printing process and monotonous color of the existing flocking product, and is easy to realize direct printing of the flocking product; the invention can directly print on the surface of a flocked product without transfer paper, can print by adopting a thermal sublimation transfer printing mode, further improves the color fastness of the obtained finished product, has simple process flow and simple, convenient and quick operation, and saves the cost of the transfer paper.

Drawings

Fig. 1 is a flow chart of a digital electrostatic flocking printing process in an embodiment of the invention.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.

The invention discloses a digital electrostatic flocking printing process, as shown in figure 1, the specific technical scheme comprises the following steps:

s1, laying a first base material with a flocked surface;

s2, printing thermal sublimation ink on the flocked surface;

s3, carrying out hot-pressing compounding and sublimation color development on the flocked surface printed with the thermal sublimation ink;

and S4, finishing printing to obtain a finished product.

The thermal sublimation is mainly that pigment molecules enter a medium through heating, and the implementation modes of the thermal sublimation are three types, namely a thermal lift printer, thermal sublimation transfer paper and thermal sublimation ink; among them, most of the sublimation inks are prepared from disperse dyes for textile use, and the disperse dyes have been widely used for textile printing and dyeing due to their saturated colors and good weather resistance, and are still one of the main raw materials in the printing and dyeing industry. The thermal transfer ink is suitable for image transfer printing on substrates such as cloth, leather, metal, wood, ceramic, glass, organic glass, PVC plates and the like.

As a further improvement of the embodiment of the present invention, before the step S1, flocking is performed on the surface of the first substrate to form a flocked surface.

As a further improvement of the embodiment of the present invention, the surface of the first base material is flocked, a hot melt adhesive layer is coated on the back surface of the flocked surface to form an adhesive surface, and the adhesive surface is cut and compounded on the surface of the second base material.

As a further improvement of the embodiment of the present invention, a hot melt adhesive layer is coated on the surface of the first base material to form an adhesive surface, and the adhesive surface is cut and compounded on the surface of the second base material; flocking the bonding surface; the hot melt adhesive layer is a single-layer hot melt adhesive or a composite hot melt adhesive film.

As a further improvement of the embodiment of the present invention, the first substrate is a composite hot melt adhesive film, the surface of the composite hot melt adhesive film is flocked, and the composite hot melt adhesive film is cut and compounded on the surface of the second substrate.

As a further improvement of the embodiment of the present invention, the flocking manner includes blade coating the treatment solution after flocking on the surface of the first substrate, or immersing and drying the fluff in the treatment solution, and then implanting the fluff on the first substrate.

As a further improvement of an embodiment of the present invention, the first substrate is a flocked transfer paper substrate, which includes paper and film.

As a further improvement of the embodiment of the invention, the printing process further comprises mirror-image printing of sublimation ink on the flocked transfer paper substrate, and compounding the sublimation ink pattern on a second substrate containing flocking glue.

As a further improvement of the embodiment of the present invention, the first base material includes paper, a facing material, a film or a nonwoven fabric;

the second base material comprises fabric, non-woven fabric, paper, metal, wood, ceramic and acrylic board.

As a further improvement of the embodiment of the invention, the composite hot melt adhesive film is a TPU, EVA, PES, PA or PO hot melt adhesive film.

As a further improvement of the embodiment of the invention, the treatment liquid is a 0.2-2% aqueous solution containing one or a mixture of PVA, PAC, sodium alginate, carboxymethyl cellulose, starch and the like.

As a further improvement of the embodiment of the invention, the device for hot-press compounding and sublimation color development is a press or a roller.

As a further improvement of the embodiment of the invention, the temperature for hot-pressing compounding and sublimation color development is 180-220 ℃, and the time is 15-60 s.

As a further improvement of the embodiment of the present invention, the flocked pile in step S1 is nylon or dacron.

As a further improvement of an embodiment of the invention, the length of the pile is 0.1-4 mm.

As a further improvement of the embodiment of the present invention, the hot melt adhesive may be spot-coated or top-coated on the surface of the first substrate; the coating amount is preferably such that the soft touch of the pile is not affected.

As a further improvement of the embodiment of the present invention, the hot melt adhesive is polyurethane, acrylic, polyamide or polyethersulfone.

Exemplary embodiments are given below: