CN109192058B

CN109192058B - Thermal transfer printing trademark with stress discoloration effect and production process thereof

Info

Publication number: CN109192058B
Application number: CN201811069299.0A
Authority: CN
Inventors: 罗彬�; 张和平
Original assignee: Fujian Zhangshi New Material Technology Co ltd
Current assignee: Fujian Zhangshi New Material Technology Co ltd
Priority date: 2018-09-13
Filing date: 2018-09-13
Publication date: 2020-10-23
Anticipated expiration: 2038-09-13
Also published as: CN109192058A

Abstract

The utility model provides a heat-transfer seal trade mark with stress discoloration effect and production technology thereof, a heat-transfer seal trade mark with stress discoloration effect, include PET film, release layer, surface protection layer, stress discoloration layer, color glue layer, white glue layer, prevent sublimation layer and the hot melt adhesive layer that from the bottom up set gradually, stress discoloration layer includes the raw materials of following parts by weight: the thermal transfer trademark with the stress color-changing effect is realized by utilizing the principle of stress whitening, when external forces such as stretching, jacking, bending, folding and the like are applied to the thermal transfer trademark, the deformed part of the film layer can show color change, and the color presents the gradual change characteristic from light to dark along with the change of the deformation gradient, so that the thermal transfer trademark has a natural and soft feeling, and once the external force is eliminated, the color on the surface of the trademark can be naturally restored as before.

Description

Thermal transfer printing trademark with stress discoloration effect and production process thereof

Technical Field

The invention belongs to the field of preparation of thermal transfer trademarks, and particularly relates to a thermal transfer trademark with a stress discoloration effect and a production process thereof.

Background

The thermal transfer printing is a surface printing mode, firstly a transfer printing film is printed, namely, patterns or characters are firstly printed on the surface of a film, and then the patterns and characters on the transfer printing film are transferred on the surface of a printing stock through heating and pressurizing by thermal transfer printing processing equipment, so that the product is bright and beautiful, the grade of the product is greatly improved, and the added value and the market competitiveness of the product are increased. It features simple technology, less steps, high efficiency, no pollution, less occupied area and less investment. Because of its simple printing process and easy operation, the required material is economical and easy to obtain, and can be extensively used on various printing stocks, such as the surfaces of cloth, plastic, wood and metal, etc. With the improvement of aesthetic eye-shine of consumer groups, the grade requirement of daily wearing articles of shoes and clothes is higher and higher, so that the popularization and application of the heat transfer printing process in the clothing industry are wider and wider in recent years. The production cycle of the garment is shortened, the time and the transportation cost are saved, and various special effects, colors, handfeel, texture and the like in the garment printing can be integrated into the garment product, so that the garment is more fashionable, and more attractive to the eyeball of a consumer. The process printing mode is widely applied to blank T-shirts, knitted T-shirts, blank sweaters, jeans, plush, toys, shoes, backpacks, hats and the like, but the hand feeling style of the existing heat transfer printing type trademark products is not complete enough, the product series is not perfect, the product types are not rich enough, the product styles which can be selected by customers are few, and the further improvement is needed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a thermal transfer trademark with stress discoloration effect, and also aims to provide a production process of the thermal transfer trademark.

The invention adopts the following technical scheme:

the utility model provides a heat-transfer seal trade mark with stress discoloration effect, includes the PET film that from the bottom up set gradually, leaves type layer, surface protection layer, stress discoloration layer, colour glue layer, white glue layer, prevent sublimation layer and hot melt adhesive layer, stress discoloration layer includes the raw materials of following parts by weight: 90-110 parts of stress color-changing resin, 5-20 parts of dry-process resin, 3-5 parts of organic color paste, 1-1.5 parts of color-spreading agent, 0.8-1.2 parts of polyether-type defoaming agent and 0.3-0.5 part of organic silicon flatting agent.

Further, the color glue layer comprises the following raw materials in parts by weight: 95-105 parts of waterborne polyurethane resin, 20-30 parts of deionized water, 5-6 parts of waterborne inorganic color paste, 0.4-0.6 part of aziridine crosslinking agent, 1-1.5 parts of cellulose derivative, 0.2-0.5 part of polyether defoamer and 0.5-1.5 parts of associative thickener.

Further, the surface protection layer comprises the following raw materials in parts by weight: 95-105 parts of water-based polycarbonate polyurethane resin, 20-30 parts of deionized water, 0.4-0.6 part of aziridine crosslinking agent, 0.3-0.8 part of organic silicon leveling agent, 0.3-0.6 part of polyether defoaming agent and 0.2-1 part of associative thickener.

Further, the white glue layer comprises the following raw materials in parts by weight: 65-75 parts of aqueous polyurethane middle layer, 28-32 parts of titanium dioxide, 4-6 parts of propylene glycol, 0.2-0.6 part of organic silicon flatting agent, 0.3-0.7 part of polyether type defoaming agent and 25-35 parts of deionized water.

Further, the anti-sublimation layer comprises the following raw materials in parts by weight: the anti-sublimation layer comprises the following raw materials in parts by weight: 85-95 parts of anti-sublimation priming slurry, 0.5-0.9 part of aziridine crosslinking agent and 5-10 parts of deionized water.

Further, the hot melt adhesive layer comprises the following raw materials in parts by weight: 85-95 parts of single-component high-fastness thermal transfer printing paste and 5-10 parts of deionized water.

Further, the release layer comprises the following raw materials in parts by weight: 18-22 parts of release agent, 1.0-1.5 parts of release agent additive A, 0.3-0.5 part of release agent additive B, 0.3-0.5 part of polyether defoamer, 0.3-0.5 part of organic silicon flatting agent, 0.2-0.5 part of associative thickener and 25-35 parts of deionized water.

The production process of the thermal transfer printing trademark with the stress discoloration effect comprises the following steps:

(1) carrying out corona treatment on the PET film, then carrying out gravure printing on the surface of the PET film subjected to corona treatment with release agent slurry, and drying to form a release layer;

(2) screen-printing surface protection layer slurry on the surface of the release layer, and drying to form a surface protection layer;

(3) printing stress color changing layer slurry on the dried surface protection layer through a screen, and drying to form a stress color changing layer;

(4) silk-screen printing color glue layer slurry on the surface of the stress color changing layer, and drying to form a color glue layer;

(5) printing white glue layer slurry on the color glue layer through screen printing, and drying to form a white glue layer;

(6) printing anti-sublimation layer slurry on the dried white glue layer by screen printing, and drying to form an anti-sublimation layer;

(7) and printing the hot melt adhesive layer slurry on the dried anti-sublimation layer, and drying to form the hot melt adhesive layer.

Further, the viscosity of the stress color changing layer slurry is 4000-6000 cps.

Further, the viscosity of the color glue layer slurry is 5000-6000 cps.

As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are: the thermal transfer trademark with the stress color change effect is realized by utilizing the principle of stress whitening, when external forces such as stretching, jacking, bending, folding and the like are applied to the thermal transfer trademark, the deformed part of the film layer can show color change, and the color shows the gradual change characteristic from light to deep along with the change of the deformation gradient, thereby giving a natural and soft feeling to people, and once the external force is eliminated, the color on the surface of the trademark can be naturally restored as before; after the thermal transfer of the thermal transfer trademark, the surface protection layer is positioned on the top surface of the trademark, so that the stress color changing layer can be protected from being corroded by water, acid, alkali or other corrosive solvents, the physical property index of a product is improved, the durability of the product is prolonged, the stress color changing layer is prevented from being oxidized, aged and damaged, and the stress color changing effect is not influenced; after the heat-transfer seal, prevent that the sublimation layer is more close the cloth, when needs are with trade mark heat-transfer seal to the poor easy sublimed dark colour cloth of dyefastness, can prevent that the cloth colour from migrating to the function on the trade mark surface.

Detailed Description

The invention is further described below by means of specific embodiments.

The utility model provides a heat-transfer seal trade mark with stress discoloration effect, includes from the bottom up PET film that sets gradually, from type layer, surface protection layer, stress discoloration layer, colour glue layer, white glue layer, prevent sublimation layer and hot melt adhesive layer.

The stress discoloration layer comprises the following raw materials in parts by weight: 90-110 parts of stress color-changing resin, 5-20 parts of dry-process resin, 3-5 parts of organic color paste, 1-1.5 parts of color-spreading agent, 0.8-1.2 parts of polyether-type defoaming agent and 0.3-0.5 part of organic silicon flatting agent.

The preparation method of the stress color changing layer slurry comprises the following steps: and (3) slowly adding the dry-process resin, the color spreading agent, the polyether-type defoaming agent, the organic silicon flatting agent and the organic color paste into the stress color-changing resin in sequence, fully and uniformly stirring, and filtering by using a 200-mesh filter screen for later use.

The stress color-changing resin is FC-3201 stress color-changing resin produced by Hangzhou colorful new material science and technology limited, the dry-process resin is HD-30L dry-process standard resin produced by Huada chemical group limited, the polyether defoamer is XAMA-3c polyether defoamer produced by Germany BELL chemical industry, the organosilicon leveling agent is YZ-1500 organosilicon leveling agent produced by Jiaxing polygala tenuifolia chemical group limited, and the associative thickener and the color developing agent are common auxiliary agents sold in the market.

The color glue layer comprises the following raw materials in parts by weight: 95-105 parts of waterborne polyurethane resin, 20-30 parts of deionized water, 5-6 parts of waterborne inorganic color paste, 0.4-0.6 part of aziridine crosslinking agent, 1-1.5 parts of cellulose derivative, 0.2-0.5 part of polyether defoamer and 0.5-1.5 parts of associative thickener.

The preparation method of the color glue layer slurry comprises the following steps: adding deionized water into waterborne polyurethane resin, stirring uniformly, adding waterborne inorganic color paste, aziridine crosslinking agent, cellulose derivative and polyether defoamer in sequence, stirring uniformly, adding associative thickener, stirring at high speed to thicken to required viscosity, and filtering with a 100-mesh filter screen for later use.

Wherein the aqueous polyurethane resin is an aqueous polyurethane resin coating material for DE-2390 leather produced by Huada chemical group Limited, the aziridine cross-linking agent is SAC-100 aziridine cross-linking agent produced by Shanghai Yong En chemical production Limited, the polyether defoaming agent is XAMA-3c polyether defoaming agent produced by Germany Bell chemical industry, and the aqueous inorganic color paste, the cellulose derivative and the associative thickener are all common commercial auxiliaries.

The surface protection layer comprises the following raw materials in parts by weight: 95-105 parts of water-based polycarbonate polyurethane resin, 20-30 parts of deionized water, 0.4-0.6 part of aziridine crosslinking agent, 0.3-0.8 part of organic silicon leveling agent, 0.3-0.6 part of polyether defoaming agent and 0.2-1 part of associative thickener.

The preparation method of the surface protective layer slurry comprises the following steps: sequentially adding deionized water, an aziridine crosslinking agent, an organic silicon flatting agent and a polyether defoaming agent into the water-based polycarbonate polyurethane resin, uniformly stirring, adding an associative thickener, stirring at a high speed to reach the required viscosity, and filtering with a 200-mesh filter screen for later use.

The waterborne polyurethane resin is UHXP2648 waterborne polyurethane resin produced by Germany Bayhydrol chemical industry, the aziridine crosslinking agent is SAC-100 aziridine crosslinking agent produced by Shanghai Yuen chemical production limited company, the polyether defoaming agent is XAMA-3c polyether defoaming agent produced by Germany BELL chemical industry, the organosilicon leveling agent is YZ-1500 organosilicon leveling agent produced by Jiaxing Yuan chemical production limited company, and the associative thickener is common auxiliary agent sold in the market.

The white glue layer comprises the following raw materials in parts by weight: 65-75 parts of aqueous polyurethane middle layer, 28-32 parts of titanium dioxide, 4-6 parts of propylene glycol, 0.2-0.6 part of organic silicon flatting agent, 0.3-0.7 part of polyether type defoaming agent and 25-35 parts of deionized water.

The preparation method of the white glue layer slurry comprises the following steps: firstly, uniformly mixing deionized water and propylene glycol, then adding titanium dioxide under the condition of slow stirring, after uniform mixing, sequentially adding the aqueous polyurethane middle layer, the organic silicon leveling agent and the polyether defoaming agent, uniformly stirring, finally adding the mixture into a grinding machine, grinding for 1-2h, and standing for later use.

Wherein the aqueous polyurethane middle layer is a 1002 aqueous polyurethane middle layer produced by Kaparry chemical (Shanghai) Co., Ltd; the titanium dioxide is produced by Shanghai Shunyu chemical industry limited company; the polyether defoamer is XAMA-3c polyether defoamer produced by German BELL chemical industry; the organic silicon flatting agent is YZ-1500 organic silicon flatting agent produced by Jiaxing polygala tenuifolia chemical limited company; propylene glycol and associative thickeners are all commercially available common adjuvants.

The anti-sublimation layer comprises the following raw materials in parts by weight: the anti-sublimation layer comprises the following raw materials in parts by weight: 85-95 parts of anti-sublimation priming slurry, 0.5-0.9 part of aziridine crosslinking agent and 5-10 parts of deionized water.

The preparation method of the anti-sublimation layer slurry comprises the following steps: uniformly mixing the anti-sublimation priming slurry, the aziridine cross-linking agent and the deionized water, and standing for later use.

Wherein the anti-sublimation primer paste is WF-151A anti-sublimation primer paste produced by Diorhun waterborne coating Co.Ltd of Dongguan city; the aziridine crosslinking agent is XAMA-7 aziridine crosslinking agent produced by BELL chemical industry in Germany.

The hot melt adhesive layer comprises the following raw materials in parts by weight: 85-95 parts of single-component high-fastness thermal transfer printing paste and 5-10 parts of deionized water.

The preparation method of the hot melt adhesive layer slurry comprises the following steps: and uniformly mixing the single-component high-fastness thermal transfer printing paste with deionized water, and standing for later use.

The single-component high-fastness thermal transfer printing paste is independently developed by Zhang new material science and technology limited in Fujian province of the applicant.

The release layer comprises the following raw materials in parts by weight: 18-22 parts of release agent, 1.0-1.5 parts of release agent additive A, 0.3-0.5 part of release agent additive B, 0.3-0.5 part of polyether defoamer, 0.3-0.5 part of organic silicon flatting agent, 0.2-0.5 part of associative thickener and 25-35 parts of deionized water.

The preparation method of the release agent slurry comprises the following steps: weighing the required components according to the formula, adding the raw materials except the association thickening agent into deionized water under the condition of slow stirring, adding a proper amount of association thickening agent after uniform dispersion, thickening to the required operation viscosity under high-speed stirring, and filtering by using a 200-mesh filter screen for later use.

Wherein the release agent is produced by DOW CORNING

7960 a mold release agent; the release agent additive A is 7960-H additive produced by DOW CORNING; the release agent assistant B is 7960-Z assistant produced by DOW CORNING; the polyether defoamer is German BELLXAMA-3c polyether defoamer produced in chemical industry; the organic silicon flatting agent is YZ-1500 organic silicon flatting agent produced by Jiaxing polygala tenuifolia chemical limited company; associative thickeners are common auxiliaries which are commercially available.

A production process of a thermal transfer trademark with stress discoloration effect comprises the following steps:

(1) carrying out corona treatment on the PET film to improve the surface wetting tension of the PET film;

(2) printing release agent slurry on the surface of the PET film subjected to corona treatment by using a 150-mesh gravure press to form a release layer;

(3) cutting the PET film printed with the release layer by a special cutting machine according to the film size required by screen printing;

(4) printing surface protection layer slurry on a release layer of the cut PET film by screen printing for 1-2 times to form a surface protection layer, wherein each printing is naturally dried or dried at low temperature, then performing next screen printing, the alignment requirement is accurate during overprinting, 150-mesh 220-mesh screen gauze is selected for the screen gauze, and the low-temperature drying temperature is 60-70 ℃;

(5) printing stress color-changing layer slurry on the surface protection layer by screen printing for 2-3 times to form a stress color-changing layer, wherein each printing is naturally dried or dried at low temperature, then performing next screen printing, the alignment requirement during overprinting is accurate, 150-220-mesh screen gauze is selected as the screen gauze, and the low-temperature drying temperature is 60-70 ℃;

(6) printing color glue layer slurry on the surface of the stress color changing layer by a silk screen for 2-3 times to form a color glue layer, naturally airing or drying at low temperature for each printing, and then performing next silk screen printing, wherein the alignment requirement is accurate during overprinting, 150-220-mesh gauze is selected for the silk screen, and the low-temperature drying temperature is 60-70 ℃;

(7) printing the white glue layer slurry on the color glue layer by screen printing for 5-10 times to form a white glue layer, wherein each printing needs natural drying or low-temperature drying, and then performing next screen printing, the alignment requirement during overprinting is accurate, the screen selects 100-150-mesh screen gauze, and the low-temperature drying temperature is 60-70 ℃;

(8) screen printing the slurry of the anti-sublimation layer on the white glue layer for 2-3 times to form the anti-sublimation layer, wherein the printing is naturally dried or dried at low temperature each time, and then the next screen printing is carried out, the alignment requirement is accurate during overprinting, 150-mesh 220-mesh screen gauze is selected as the screen gauze, and the low-temperature drying temperature is 60-70 ℃;

(9) printing the sizing agent of the hot-melt adhesive layer on the anti-sublimation layer for 2-3 times to form the hot-melt adhesive layer, wherein each printing is naturally dried or dried at low temperature, then performing the next screen printing, the alignment requirement during overprinting is accurate, 100-mesh 150-mesh screen gauze is selected as the screen gauze, and the low-temperature drying temperature is 60-70 ℃.

Specifically, the viscosity of the stress color changing layer slurry is 4000-6000 cps.

The viscosity of the size of the color glue layer is 5000-6000 cps.

The viscosity of the surface protection layer slurry is 6000-.

After corona treatment, the surface tension of the PET film reaches more than 50 dyn.

When the thermal transfer printing trademark is subjected to thermal transfer printing, the thermal transfer printing effect with better washing fastness can be obtained by providing 3-5kgf air pressure at the high temperature of 140-150 ℃ and pressing for 15-20 s.

Example 1

The stress discoloration layer comprises the following raw materials in parts by weight: 90 parts of stress color-changing resin, 20 parts of dry-process resin, 5 parts of organic color paste, 1 part of color-spreading agent, 1.2 parts of polyether-type defoaming agent and 0.3 part of organic silicon flatting agent.

The preparation method of the stress color changing layer slurry comprises the following steps: and (3) slowly adding the dry-process resin, the color spreading agent, the polyether-type defoaming agent, the organic silicon flatting agent and the organic color paste into the stress color-changing resin in sequence, fully and uniformly stirring, and filtering through a 200-mesh filter screen for later use.

The color glue layer comprises the following raw materials in parts by weight: 105 parts of waterborne polyurethane resin, 20 parts of deionized water, 5 parts of waterborne inorganic color paste, 0.6 part of aziridine crosslinking agent, 1 part of cellulose derivative, 0.5 part of polyether defoaming agent and 1.5 parts of associative thickener.

The surface protection layer comprises the following raw materials in parts by weight: 105 parts of water-based polycarbonate polyurethane resin, 20 parts of deionized water, 0.4 part of aziridine crosslinking agent, 0.8 part of organic silicon flatting agent, 0.3 part of polyether defoaming agent and 1 part of associative thickener.

The white glue layer comprises the following raw materials in parts by weight: 65 parts of aqueous polyurethane middle layer, 32 parts of titanium dioxide, 4 parts of propylene glycol, 0.6 part of organic silicon flatting agent, 0.3 part of polyether type defoaming agent and 25 parts of deionized water.

The preparation method of the white glue layer slurry comprises the following steps: the preparation method comprises the steps of uniformly mixing deionized water and propylene glycol, adding titanium dioxide under the condition of slow stirring, sequentially adding the aqueous polyurethane middle layer, the organic silicon flatting agent and the polyether defoaming agent after uniform mixing, uniformly stirring, adding into a grinding machine, grinding for 2 hours, and standing for later use.

The anti-sublimation layer comprises the following raw materials in parts by weight: the anti-sublimation layer comprises the following raw materials in parts by weight: 85 parts of anti-sublimation priming paste, 0.9 part of aziridine crosslinking agent and 10 parts of deionized water.

The hot melt adhesive layer comprises the following raw materials in parts by weight: 95 parts of single-component high-fastness thermal transfer printing paste and 5 parts of deionized water.

The release layer comprises the following raw materials in parts by weight: 22 parts of release agent, 1.0 part of release agent additive A, 0.5 part of release agent additive B, 0.3 part of polyether defoamer, 0.5 part of organic silicon flatting agent, 0.2 part of associative thickener and 25 parts of deionized water.

Wherein the release agent is produced by DOW CORNING

7960 a mold release agent; the release agent additive A is 7960-H additive produced by DOW CORNING; the release agent assistant B is 7960-Z assistant produced by DOW CORNING; the polyether defoamer is XAMA-3c polyether defoamer produced by German BELL chemical industry; the organic silicon flatting agent is YZ-1500 organic silicon flatting agent produced by Jiaxing polygala tenuifolia chemical limited company; associative thickeners are common auxiliaries which are commercially available.

(2) printing release agent slurry on the surface of the PET film subjected to corona treatment by using a 150-mesh gravure to form a release layer;

(4) printing surface protection layer slurry on a release layer of the cut PET film by screen printing for 1 time to form a surface protection layer, wherein the surface protection layer is naturally dried or dried at low temperature in each printing, then performing the next screen printing, the alignment requirement is accurate in overprinting, 150-mesh gauze is selected for the screen, and the low-temperature drying temperature is 70 ℃;

(5) printing stress color-changing layer slurry on the surface protection layer by screen printing for 3 times to form a stress color-changing layer, wherein the printing is naturally dried or dried at low temperature every time, and then the next screen printing is carried out, the alignment requirement is accurate during overprinting, 150-mesh gauze is selected for the screen, and the low-temperature drying temperature is 60 ℃;

(6) silk screen printing color glue layer slurry on the surface of the stress color changing layer for 2 times to form a color glue layer, wherein the printing is naturally dried or dried at low temperature each time, then the next silk screen printing is carried out, the alignment requirement is accurate during overprinting, 150 meshes of gauze are selected for the silk screen, and the low-temperature drying temperature is 60 ℃;

(7) printing the white glue layer slurry on the color glue layer by screen printing for 5 times to form a white glue layer, wherein each printing needs to be naturally dried or dried at a low temperature, then the next screen printing is carried out, the alignment requirement during overprinting is accurate, 100-mesh screen gauze is selected for the screen gauze, and the low-temperature drying temperature is 60 ℃;

(8) screen printing anti-sublimation layer slurry on the white glue layer for 2 times to form an anti-sublimation layer, wherein the printing is naturally dried or dried at low temperature each time, and then the next screen printing is carried out, wherein the alignment requirement is accurate during overprinting, the screen is selected from 150 meshes of screen gauze, and the low-temperature drying temperature is 70 ℃;

(9) printing hot melt adhesive layer thick liquids 2 times on the anti-sublimation layer, forming the hot melt adhesive layer, printing each time all will dry naturally or low temperature is dried, then carries out screen printing next time again, and the counterpoint requirement is accurate during the overprinting, and 100 mesh screen cloth are selected to the silk screen, and low temperature stoving temperature is 60 ℃.

Specifically, the viscosity of the stress color changing layer slurry is 4000 cps.

The viscosity of the size layer was 5000 cps.

The viscosity of the surface protective layer slurry was 8000 cps.

When the thermal transfer printing trademark is subjected to thermal transfer printing, the thermal transfer printing effect with good washing fastness can be obtained by providing 3kgf air pressure at the high temperature of 140 ℃ and pressing for 20 s.

Example 2

The stress discoloration layer comprises the following raw materials in parts by weight: 110 parts of stress color-changing resin, 5 parts of dry-process resin, 3 parts of organic color paste, 1.5 parts of color-spreading agent, 0.8 part of polyether-type defoaming agent and 0.5 part of organic silicon flatting agent.

The color glue layer comprises the following raw materials in parts by weight: 95 parts of waterborne polyurethane resin, 30 parts of deionized water, 6 parts of waterborne inorganic color paste, 0.4 part of aziridine crosslinking agent, 1.5 parts of cellulose derivative, 0.2 part of polyether defoaming agent and 0.5 part of associative thickener.

The surface protection layer comprises the following raw materials in parts by weight: 95 parts of water-based polycarbonate polyurethane resin, 30 parts of deionized water, 0.6 part of aziridine crosslinking agent, 0.3 part of organic silicon flatting agent, 0.6 part of polyether defoaming agent and 0.2 part of associative thickener.

The white glue layer comprises the following raw materials in parts by weight: 75 parts of waterborne polyurethane middle layer, 28 parts of titanium dioxide, 6 parts of propylene glycol, 0.2 part of organic silicon flatting agent, 0.7 part of polyether type defoaming agent and 35 parts of deionized water.

The preparation method of the white glue layer slurry comprises the following steps: the preparation method comprises the steps of uniformly mixing deionized water and propylene glycol, adding titanium dioxide under the condition of slow stirring, sequentially adding the aqueous polyurethane middle layer, the organic silicon flatting agent and the polyether defoaming agent after uniform mixing, uniformly stirring, adding into a grinding machine, grinding for 1 hour, and standing for later use.

The anti-sublimation layer comprises the following raw materials in parts by weight: the anti-sublimation layer comprises the following raw materials in parts by weight: 95 parts of anti-sublimation priming paste, 0.5 part of aziridine crosslinking agent and 5 parts of deionized water.

The hot melt adhesive layer comprises the following raw materials in parts by weight: 85 parts of single-component high-fastness thermal transfer printing paste and 10 parts of deionized water.

The release layer comprises the following raw materials in parts by weight: 18 parts of release agent, 1.5 parts of release agent additive A, 0.3 part of release agent additive B, 0.5 part of polyether defoamer, 0.3 part of organic silicon flatting agent, 0.5 part of associative thickener and 35 parts of deionized water.

Wherein the release agent is produced by DOW CORNING

(2) printing release agent slurry on the surface of the PET film subjected to corona treatment by using a 250-mesh gravure to form a release layer;

(4) printing surface protection layer slurry on a release layer of the cut PET film by screen printing for 2 times to form a surface protection layer, wherein the surface protection layer is naturally dried or dried at low temperature in each printing, then performing the next screen printing, the alignment requirement is accurate in overprinting, the screen printing is 220-mesh screen gauze, and the low-temperature drying temperature is 60 ℃;

(5) printing stress color changing layer slurry on the surface protection layer by screen printing for 2 times to form a stress color changing layer, wherein the printing is naturally dried or dried at low temperature each time, then the next screen printing is carried out, the alignment requirement during overprinting is accurate, 220-mesh screen gauze is selected as the screen gauze, and the low-temperature drying temperature is 70 ℃;

(6) silk screen printing color glue layer slurry on the surface of the stress color changing layer for 3 times to form a color glue layer, wherein each printing needs to be naturally dried or dried at low temperature, then the next silk screen printing is carried out, the alignment requirement is accurate during overprinting, 220-mesh gauze is selected for the silk screen, and the low-temperature drying temperature is 70 ℃;

(7) printing the white glue layer slurry on the color glue layer by screen printing for 10 times to form a white glue layer, wherein each printing needs to be naturally dried or dried at a low temperature, then the next screen printing is carried out, the alignment requirement during overprinting is accurate, 150-mesh gauze is selected for the screen, and the low-temperature drying temperature is 70 ℃;

(8) screen printing anti-sublimation layer slurry on the white glue layer for 3 times to form an anti-sublimation layer, wherein the printing is naturally dried or dried at low temperature each time, and then the next screen printing is carried out, the alignment requirement during overprinting is accurate, 220-mesh gauze is selected as the screen, and the low-temperature drying temperature is 60 ℃;

(9) printing hot melt adhesive layer thick liquids 3 times on the anti-sublimation layer, forming the hot melt adhesive layer, printing each time all will dry naturally or low temperature is dried, then carries out screen printing next time, and the counterpoint requirement is accurate during overprinting, and 150 mesh gauze are selected to the silk screen, and low temperature stoving temperature is 70 ℃.

Specifically, the viscosity of the stress color changing layer slurry is 6000 cps.

The viscosity of the color paste layer slurry was 6000 cps.

The viscosity of the surface protective layer slurry was 6000 cps.

When the thermal transfer printing trademark is subjected to thermal transfer printing, 5kgf of air pressure is required to be provided at the high temperature of 150 ℃, and the hot transfer printing effect with good washing fastness can be obtained by pressing for 15 s.

Example 3

The stress discoloration layer comprises the following raw materials in parts by weight: 100 parts of stress color-changing resin, 12 parts of dry-process resin, 4 parts of organic color paste, 1.2 parts of color-spreading agent, 1 part of polyether-type defoaming agent and 0.4 part of organic silicon flatting agent.

The color glue layer comprises the following raw materials in parts by weight: 100 parts of waterborne polyurethane resin, 25 parts of deionized water, 5.5 parts of waterborne inorganic color paste, 0.5 part of aziridine crosslinking agent, 1.2 parts of cellulose derivative, 0.3 part of polyether defoaming agent and 1 part of associative thickener.

The surface protection layer comprises the following raw materials in parts by weight: 100 parts of water-based polycarbonate polyurethane resin, 25 parts of deionized water, 0.5 part of aziridine crosslinking agent, 0.5 part of organic silicon flatting agent, 0.5 part of polyether defoaming agent and 0.6 part of associative thickener.

The white glue layer comprises the following raw materials in parts by weight: 70 parts of waterborne polyurethane middle layer, 30 parts of titanium dioxide, 5 parts of propylene glycol, 0.4 part of organic silicon flatting agent, 0.5 part of polyether type defoaming agent and 30 parts of deionized water.

The preparation method of the white glue layer slurry comprises the following steps: the preparation method comprises the steps of uniformly mixing deionized water and propylene glycol, adding titanium dioxide under the condition of slow stirring, sequentially adding the aqueous polyurethane middle layer, the organic silicon flatting agent and the polyether defoaming agent after uniform mixing, uniformly stirring, adding into a grinding machine, grinding for 1.5h, and standing for later use.

The anti-sublimation layer comprises the following raw materials in parts by weight: the anti-sublimation layer comprises the following raw materials in parts by weight: 90 parts of anti-sublimation priming paste, 0.7 part of aziridine crosslinking agent and 8 parts of deionized water.

The hot melt adhesive layer comprises the following raw materials in parts by weight: 90 parts of single-component high-fastness thermal transfer printing paste and 8 parts of deionized water.

The release layer comprises the following raw materials in parts by weight: 20 parts of release agent, 1.2 parts of release agent additive A, 0.4 part of release agent additive B, 0.4 part of polyether defoamer, 0.4 part of organic silicon flatting agent, 0.35 part of associative thickener and 30 parts of deionized water.

Wherein the release agent is produced by DOW CORNING

(2) printing release agent slurry on the surface of the PET film subjected to corona treatment by using a 200-mesh gravure to form a release layer;

(4) printing surface protection layer slurry on a release layer of the cut PET film by screen printing for 2 times to form a surface protection layer, wherein the surface protection layer is naturally dried or dried at low temperature in each printing, then the next screen printing is carried out, the alignment requirement is accurate in overprinting, 180-mesh gauze is selected for the screen, and the low-temperature drying temperature is 65 ℃;

(5) printing stress color-changing layer slurry on the surface protection layer by screen printing for 2 times to form a stress color-changing layer, wherein the printing is naturally dried or dried at low temperature every time, and then the next screen printing is carried out, the alignment requirement is accurate during overprinting, 180-mesh gauze is selected for the screen, and the low-temperature drying temperature is 65 ℃;

(6) silk screen printing color glue layer slurry on the surface of the stress color changing layer for 3 times to form a color glue layer, wherein each printing needs to be naturally dried or dried at low temperature, then the next silk screen printing is carried out, the alignment requirement is accurate during overprinting, 180-mesh gauze is selected for the silk screen, and the low-temperature drying temperature is 65 ℃;

(7) printing the white glue layer slurry on the color glue layer by screen printing for 8 times to form a white glue layer, wherein each printing needs to be naturally dried or dried at a low temperature, then the next screen printing is carried out, the alignment requirement during overprinting is accurate, the screen is selected from 120-mesh screen gauze, and the low-temperature drying temperature is 65 ℃;

(8) screen printing anti-sublimation layer slurry on the white glue layer for 2 times to form an anti-sublimation layer, wherein the printing is naturally dried or dried at low temperature each time, and then the next screen printing is carried out, wherein the alignment requirement is accurate during overprinting, 180-mesh gauze is selected for the silk screen, and the low-temperature drying temperature is 65 ℃;

(9) printing hot melt adhesive layer thick liquids 2 times on the anti-sublimation layer, forming the hot melt adhesive layer, printing each time all will dry naturally or low temperature is dried, then carries out screen printing next time, and the counterpoint requirement is accurate during overprinting, and 120 mesh gauze are selected to the silk screen, and low temperature stoving temperature is 65 ℃.

Specifically, the viscosity of the stress color changing layer slurry is 5000 cps.

The viscosity of the size of the gum layer is 5500 cps.

The viscosity of the surface protective layer slurry was 7000 cps.

When the thermal transfer printing trademark is subjected to thermal transfer printing, 4kgf of air pressure is required to be provided at the high temperature of 145 ℃ for pressing for 18s, and the thermal transfer printing effect with good washing fastness can be obtained.

The thermal transfer trademark with the stress discoloration effect is realized by utilizing the principle of stress whitening, when external force such as stretching, jacking, bending, folding and the like is applied to the thermal transfer trademark, the deformed part of the film layer can show color change, and the color shows gradual change characteristics from light to deep along with the change of deformation gradient, so that a natural and soft feeling is provided for people, once the external force is eliminated, the color on the surface of the trademark can be naturally restored as before, the color shown by the thermal transfer trademark is the superposed color of the stress discoloration layer and the color adhesive layer, and the color generated after the external force is applied is mainly the color generated by the stress discoloration layer.

After the thermal transfer trademark is subjected to thermal transfer, the surface protection layer is positioned on the top surface of the trademark, so that the stress color changing layer can be protected from being corroded by water, acid, alkali or other corrosive solvents, the physical index of a product is improved, the durability of the product is prolonged, the stress color changing layer is prevented from being oxidized, aged and damaged, and the stress color changing effect is not influenced.

After the heat-transfer seal, prevent that the sublimation layer is more close the cloth, when needs are with trade mark heat-transfer seal to the poor easy sublimed dark colour cloth of dyefastness, can prevent that the cloth colour from migrating to the function on the trade mark surface.

The heat transfer trademark produced by the invention has good dry and wet wiping and washing fastness and good color migration resistance.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents and modifications within the scope of the description.

Claims

1. A thermal transfer trademark with stress discoloration effect is characterized in that: the PET film that sets gradually including from the bottom up, leaves type layer, surface protection layer, stress discoloration layer, color glue layer, white glue layer, prevent sublimation layer and hot melt adhesive layer, the stress discoloration layer includes the raw materials of following parts by weight: 90-110 parts of stress color-changing resin, 5-20 parts of dry-process resin, 3-5 parts of organic color paste, 1-1.5 parts of color-spreading agent, 0.8-1.2 parts of polyether-type defoaming agent and 0.3-0.5 part of organic silicon flatting agent;

the surface protection layer comprises the following raw materials in parts by weight: 95-105 parts of water-based polycarbonate polyurethane resin, 20-30 parts of deionized water, 0.4-0.6 part of aziridine crosslinking agent, 0.3-0.8 part of organic silicon leveling agent, 0.3-0.6 part of polyether defoaming agent and 0.2-1 part of associative thickener;

the anti-sublimation layer comprises the following raw materials in parts by weight: 85-95 parts of anti-sublimation priming slurry, 0.5-0.9 part of aziridine crosslinking agent and 5-10 parts of deionized water.

2. The heat transfer trademark with stress discoloration effect according to claim 1, wherein: the color glue layer comprises the following raw materials in parts by weight: 95-105 parts of waterborne polyurethane resin, 20-30 parts of deionized water, 5-6 parts of waterborne inorganic color paste, 0.4-0.6 part of aziridine crosslinking agent, 1-1.5 parts of cellulose derivative, 0.2-0.5 part of polyether defoamer and 0.5-1.5 parts of associative thickener.

3. The heat transfer trademark with stress discoloration effect according to claim 1, wherein: the white glue layer comprises the following raw materials in parts by weight: 65-75 parts of aqueous polyurethane middle layer, 28-32 parts of titanium dioxide, 4-6 parts of propylene glycol, 0.2-0.6 part of organic silicon flatting agent, 0.3-0.7 part of polyether type defoaming agent and 25-35 parts of deionized water.

4. The heat transfer trademark with stress discoloration effect according to claim 1, wherein: the hot melt adhesive layer comprises the following raw materials in parts by weight: 85-95 parts of single-component high-fastness thermal transfer printing paste and 5-10 parts of deionized water.

5. The heat transfer trademark with stress discoloration effect according to claim 1, wherein: the release layer comprises the following raw materials in parts by weight: 18-22 parts of release agent, 1.0-1.5 parts of release agent additive A, 0.3-0.5 part of release agent additive B, 0.3-0.5 part of polyether defoamer, 0.3-0.5 part of organic silicon flatting agent, 0.2-0.5 part of associative thickener and 25-35 parts of deionized water.

6. The process for producing a heat-transfer trademark with stress discoloration effect according to any one of claims 1 to 5, wherein: the method comprises the following steps:

7. The production process of the thermal transfer trademark with stress discoloration effect as claimed in claim 6, wherein: the viscosity of the stress color changing layer slurry is 4000-6000 cps.

8. The production process of the thermal transfer trademark with stress discoloration effect as claimed in claim 6, wherein: the viscosity of the size of the color glue layer is 5000-6000 cps.