CN112708306B - Ink for thermal transfer printing and thermal transfer printing method - Google Patents

Ink for thermal transfer printing and thermal transfer printing method Download PDF

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Publication number
CN112708306B
CN112708306B CN202110046683.4A CN202110046683A CN112708306B CN 112708306 B CN112708306 B CN 112708306B CN 202110046683 A CN202110046683 A CN 202110046683A CN 112708306 B CN112708306 B CN 112708306B
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ink
thermal transfer
printing
transfer printing
oven
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CN112708306A (en
Inventor
袁圈圈
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Suzhou Gaotai Electronic Technology Co ltd
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Suzhou Gaotai Electronic Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/10—Printing inks based on artificial resins
    • C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/12—Stencil printing; Silk-screen printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
    • B41M5/06—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet using master sheets coated with jelly-like materials, e.g. gelatin
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/04—Homopolymers or copolymers of ethene
    • C09J123/08—Copolymers of ethene
    • C09J123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C09J123/0853—Vinylacetate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

Abstract

The invention relates to ink for thermal transfer printing, which comprises the following components in parts by mass: 70-80 parts of water-based ink, 5-10 parts of curing agent and 15-20 parts of diluent, and also comprises a thermal transfer printing method. The exquisite pattern on the transfer printing film is transferred on the surface of a product by heating and pressurizing the heat transfer printing machine, so that the transfer printing machine is suitable for materials such as leather, plastics, ceramics, fabrics, metal, glass, high polymer flannelette and the like, and meets diversified requirements on the market; the formed ink layer and the surface of the product are dissolved into a whole, so that the ink layer is vivid and beautiful, the transferred pattern is bright in color and rich in layers, the adhesive force and the decorative property are strong, the wear resistance is good, and the grade of the product can be improved to a great extent; the transfer process is fast, the method is simple, and the production efficiency is greatly improved.

Description

Ink for thermal transfer printing and thermal transfer printing method
Technical Field
The invention relates to the technical field of thermal transfer printing, in particular to ink for thermal transfer printing and a thermal transfer printing method.
Background
With the development of society, labels are widely applied in our lives, and are of various varieties, so that the development of label printing technology is continuously promoted, the traditional labels print pattern information on materials, and then are transferred to products through self-adhesion of the materials, and finally play roles in marking and warning, but the printing effect is single, the color is rigid, the labels are not attractive, and the labels are not suitable for products with special surface materials, such as leather, plastics, ceramics, fabrics, metals, glass, high-molecular flannelette and the like.
Disclosure of Invention
The invention aims to solve the technical problems of designing the ink for thermal transfer printing and the thermal transfer printing method and solving the existing technical problems.
In order to solve the technical problem, the ink for thermal transfer printing comprises the following components in parts by mass: 70-80 parts of water-based ink, 5-10 parts of curing agent and 15-20 parts of diluent; the water-based ink comprises the following components in percentage by mass: 60% of water-based PUA, 15% of water, 20% of titanium dioxide, 5% of defoaming agent, dispersing agent and leveling agent; the curing agent comprises HM-diisocyanate and HMDI polyisocyanate; the diluent comprises ethylene glycol monobutyl ether and an ester solvent.
Further, the mass ratio of the HM-diisocyanate and the HMDI-based polyisocyanate in the curing agent is 1% and 99%, respectively.
Furthermore, the mass ratio of the ethylene glycol monobutyl ether to the ester solvent in the diluent is respectively 1% and 99%.
The invention also provides a thermal transfer printing method, which comprises the following steps:
s1: prepress preparation
S11: releasing the surface of the base material, putting the base material into an oven to shrink for 40-60 min before printing, and keeping the temperature at 80-100 ℃;
s12: preparing ink according to the formula of the ink for thermal transfer printing;
s13: drying the graphic characters on a 120-DEG 250-mesh/22.5-DEG screen;
s2: printing
S21: putting a screen plate frame on a printing machine, adjusting the position, installing a scraper, putting the prepared ink on the screen plate, wherein the force of the scraper is uniform in the operation process, the speed is slowed down, the ink overflow is prevented, the conditions of line breakage and content loss are detected for each printed product, and the printed product is put on an air drying frame after no problem exists;
s22: placing the printed semi-finished product into an oven, setting the temperature of the oven to be 40-60 ℃, baking for 15-20 min, and taking out;
s23: the scraper force is required to be uniform and the speed is slowed down in the operation process of printing the second printing ink, the covering power can be increased by printing the second printing ink, the condition that light leaks in the first printing is prevented, and the color can be guaranteed not to change color in the transfer printing process;
s24: placing the printed semi-finished product into an oven, setting the temperature of the oven to be 40-60 ℃, baking for 15-20 min, and taking out;
s25: glue is printed on the basis of the original pattern, the force of a scraper needs to be uniform in the operation process, the speed is reduced, and the glue and the printing ink have the advantages of tensile property, water washing resistance, rubber resistance and the like in combination;
s26: placing the printed semi-finished product into an oven, setting the temperature of the oven to be 40-60 ℃, baking for 15-20 min, and taking out;
s27: printing second glue, wherein the force of the scraper needs to be uniform in the operation process, the speed is reduced, and the fastness of the glue can be improved by printing the second glue, so that the patterns are fuller and more saturated;
s28: placing the printed semi-finished product into an oven, setting the temperature of the oven to be 40-60 ℃, baking for 15-20 min, and taking out;
s29: the method comprises the following steps of (1) adjusting the pressure of a cutting die by using the cutting die, placing a printed product on the cutting die, wherein the cutting die is completely broken in shape, and the printed product needs to be lightly taken and placed in order in the process;
s3: transfer printing: and opening the thermal transfer printing machine, setting the temperature to be 130 ℃, placing the product on the machine when the temperature rises to a set value, adjusting the pressure, pressing for 10-15 seconds, taking out, tearing off the label after the temperature is cooled, completing printing, inspecting and packaging.
Further, the glue printed in the steps S25 and S27 comprises the following components by mass: 45% of EVA resin, 25% of dimethylbenzene, 25% of tackifier and 5% of antioxidant.
The invention has the beneficial effects that: the exquisite patterns on the transfer printing film are transferred on the surface of a product by heating and pressurizing of a heat transfer printing machine, so that the transfer printing film is suitable for materials such as leather, plastics, ceramics, fabrics, metal, glass, high-molecular flannelette and the like, and meets diversified requirements on the market; by adopting thermal transfer printing on a small area or a complex surface, the pattern is easy to realize, and multicolor printing can be realized; the formed ink layer and the surface of the product are integrated, so that the transfer printing ink is vivid and beautiful, the transfer printing pattern is bright in color and rich in layers, the adhesive force and the decoration are strong, the wear resistance is good, and the grade of the product can be improved to a great extent; the transfer process is fast, the method is simple, and the production efficiency is greatly improved.
Drawings
The following further explains embodiments of the present invention with reference to the drawings.
FIG. 1 is a schematic flow chart of a thermal transfer printing method according to the present invention.
Detailed Description
The thermal transfer printing ink comprises the following components in parts by mass: 70-80 parts of water-based ink, 5-10 parts of curing agent and 15-20 parts of diluent; the water-based ink comprises the following components in percentage by mass: 60% of water-based PUA, 15% of water, 20% of titanium dioxide, 5% of defoaming agent, dispersing agent and leveling agent; the curing agent comprises HM-diisocyanate and HMDI polyisocyanate; the diluent comprises ethylene glycol monobutyl ether and an ester solvent. The mass ratio of HM-diisocyanate and HMDI polyisocyanate in the curing agent is 1% and 99% respectively. The mass ratio of ethylene glycol monobutyl ether to ester solvent in the diluent is 1% and 99% respectively.
Referring to fig. 1, the thermal transfer method of the present invention includes the steps of:
s1: prepress preparation
S11: releasing the surface of the base material, putting the base material into an oven to shrink for 40-60 min before printing, and keeping the temperature at 80-100 ℃;
s12: preparing ink according to the formula of the ink for thermal transfer printing;
s13: drying the graphic characters on a 120-DEG 250-mesh/22.5-DEG screen;
s2: printing
S21: putting a screen plate frame on a printing machine, adjusting the position, installing a scraper, putting the prepared ink on the screen plate, wherein the force of the scraper is uniform in the operation process, the speed is slowed down, the ink overflow is prevented, the conditions of line breakage and content loss are detected for each printed product, and the printed product is put on an air drying frame after no problem exists;
s22: placing the printed semi-finished product into an oven, setting the temperature of the oven to be 40-60 ℃, baking for 15-20 min, and taking out;
s23: the scraper force is required to be uniform and the speed is slowed down in the operation process of printing the second printing ink, the covering power can be increased by printing the second printing ink, the condition that light leaks in the first printing is prevented, and the color can be guaranteed not to change color in the transfer printing process;
s24: placing the printed semi-finished product into an oven, setting the temperature of the oven to be 40-60 ℃, baking for 15-20 min, and taking out;
s25: printing glue on the basis of the original pattern, wherein the force of a scraper needs to be uniform in the operation process, and the speed is slowed down;
s26: placing the printed semi-finished product into an oven, setting the temperature of the oven to be 40-60 ℃, baking for 15-20 min, and taking out;
s27: printing second glue, wherein the force of the scraper needs to be uniform in the operation process, the speed is reduced, and the fastness of the glue can be improved by printing the second glue, so that the patterns are fuller and more saturated;
s28: placing the printed semi-finished product into an oven, setting the temperature of the oven to be 40-60 ℃, baking for 15-20 min, and taking out;
s29: the method comprises the following steps of (1) adjusting the pressure of a cutting die by using the cutting die, placing a printed product on the cutting die, wherein the cutting die is completely broken in shape, and the printed product needs to be lightly taken and placed in order in the process;
s3: transfer printing: and opening the thermal transfer printing machine, setting the temperature to be 130 ℃, placing the product on the machine when the temperature rises to a set value, adjusting the pressure, pressing for 10-15 seconds, taking out, tearing off the label after the temperature is cooled, completing printing, inspecting and packaging.
Further, the glue printed in the steps S25 and S27 comprises the following components by mass: 45% of EVA resin, 25% of dimethylbenzene, 25% of tackifier and 5% of antioxidant.
Example 1
The ink for thermal transfer of the present example contains the following components in parts by mass: 70 parts of water-based ink, 10 parts of curing agent and 20 parts of diluent; the water-based ink comprises the following components in percentage by mass: 60% of water-based PUA, 15% of water, 20% of titanium dioxide, 5% of defoaming agent, dispersing agent and leveling agent; the curing agent comprises 1% by mass of HM-diisocyanate and 99% by mass of HMDI polyisocyanate; the diluent comprises 1% by mass of ethylene glycol monobutyl ether and 99% by mass of ester solvent.
Example 2
The ink for thermal transfer of the present example contains the following components in parts by mass: 74 parts of aqueous ink, 8 parts of curing agent and 18 parts of diluent; the water-based ink comprises the following components in percentage by mass: 60% of water-based PUA, 15% of water, 20% of titanium dioxide, 5% of defoaming agent, dispersing agent and leveling agent; the curing agent comprises 1% by mass of HM-diisocyanate and 99% by mass of HMDI polyisocyanate; the diluent comprises 1% by mass of ethylene glycol monobutyl ether and 99% by mass of ester solvent.
Example 3
The ink for thermal transfer of the present example contains the following components in parts by mass: 78 parts of aqueous ink, 7 parts of curing agent and 15 parts of diluent; the water-based ink comprises the following components in percentage by mass: 60% of water-based PUA, 15% of water, 20% of titanium dioxide, 5% of defoaming agent, dispersing agent and leveling agent; the curing agent comprises 1% by mass of HM-diisocyanate and 99% by mass of HMDI polyisocyanate; the diluent comprises 1% by mass of ethylene glycol monobutyl ether and 99% by mass of ester solvent.
Example 4
The ink for thermal transfer of the present example contains the following components in parts by mass: 80 parts of water-based ink, 5 parts of curing agent and 15 parts of diluent; the water-based ink comprises the following components in percentage by mass: 60% of water-based PUA, 15% of water, 20% of titanium dioxide, 5% of defoaming agent, dispersing agent and leveling agent; the curing agent comprises 1% by mass of HM-diisocyanate and 99% by mass of HMDI polyisocyanate; the diluent comprises 1% by mass of ethylene glycol monobutyl ether and 99% by mass of ester solvent.
Example 5
The inks for thermal transfer printing in examples 1 to 4 were transferred to leather, metal, glass and polymer flannelette by the thermal transfer printing method of the present invention, respectively, and the following tests were carried out after the completion of the transfer printing: the product was placed on an HTC1125, Rubber model # EF74 instrument, under a load of 250g, 200 passes, at a speed of 1cycle/1Sec, and pattern integrity was checked after testing to obtain the following results:
leather Metal Glass High molecular flannelette
Test results Complete pattern without loss Complete pattern without loss Complete pattern without missing Complete pattern without missing
The exquisite patterns on the transfer printing film are transferred on the surface of a product by heating and pressurizing of a heat transfer printing machine, so that the transfer printing film is suitable for materials such as leather, plastics, ceramics, fabrics, metal, glass, high-molecular flannelette and the like, and meets diversified requirements on the market; by adopting thermal transfer printing on a small area or a complex surface, the pattern is easy to realize, and multicolor printing can be realized; the formed ink layer and the surface of the product are integrated, so that the transfer printing ink is vivid and beautiful, the transfer printing pattern is bright in color and rich in layers, the adhesive force and the decoration are strong, the wear resistance is good, and the grade of the product can be improved to a great extent; the transfer process is fast, the method is simple, and the production efficiency is greatly improved.
In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. The foregoing description is only a preferred embodiment of the invention, which can be embodied in many different forms than described herein, and therefore the invention is not limited to the specific embodiments disclosed above. And that those skilled in the art may, using the methods and techniques disclosed above, make numerous possible variations and modifications to the disclosed embodiments, or modify equivalents thereof, without departing from the scope of the claimed embodiments. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims (4)

1. A thermal transfer method of ink for thermal transfer, characterized in that: the method comprises the following steps:
s1: prepress preparation
S11: releasing the surface of the base material, putting the base material into an oven to shrink for 40-60 min before printing, and keeping the temperature at 80-100 ℃;
s12: preparing ink according to the formula of the ink for thermal transfer printing;
s13: drying the graphic characters on a 120-DEG-250-mesh/22.5-DEG halftone;
s2: printing
S21: putting a screen plate frame on a printing machine, adjusting the position, installing a scraper, putting the prepared ink on the screen plate, wherein the force of the scraper is uniform in the operation process, the speed is slowed down, the ink overflow is prevented, the conditions of line breakage and content loss are detected for each printed product, and the printed product is put on an air drying frame after no problem exists;
s22: placing the printed semi-finished product into an oven, setting the temperature of the oven to be 40-60 ℃, baking for 15-20 min, and taking out;
s23: printing a second printing ink, wherein the scraper force needs to be uniform in the operation process, and the speed is reduced;
s24: placing the printed semi-finished product into an oven, setting the temperature of the oven to be 40-60 ℃, baking for 15-20 min, and taking out;
s25: printing glue on the basis of the original pattern, wherein the force of a scraper needs to be uniform in the operation process, and the speed is slowed down;
s26: placing the printed semi-finished product into an oven, setting the temperature of the oven to be 40-60 ℃, baking for 15-20 min, and taking out;
s27: printing second glue, wherein the force of the scraper needs to be uniform in the operation process, and the speed is reduced;
s28: placing the printed semi-finished product into an oven, setting the temperature of the oven to be 40-60 ℃, baking for 15-20 min, and taking out;
s29: the method comprises the following steps of (1) adjusting the pressure of a cutting die by using the cutting die, placing a printed product on the cutting die, wherein the cutting die is completely broken in shape, and the printed product needs to be lightly taken and placed in order in the process;
s3: transfer printing: opening a thermal transfer printing machine, setting the temperature to be 130 ℃, placing the product on the machine when the temperature rises to a set value, adjusting the pressure, pressing for 10-15 seconds, taking out, tearing off the label after the temperature is cooled, completing printing, and packaging after inspection;
the ink for thermal transfer printing comprises the following components in parts by mass: 70-80 parts of water-based ink, 5-10 parts of curing agent and 15-20 parts of diluent; the water-based ink comprises the following components in percentage by mass: 60% of water-based PUA, 15% of water, 20% of titanium dioxide, 5% of defoaming agent, dispersing agent and leveling agent; the curing agent comprises HM-diisocyanate and HMDI polyisocyanate; the diluent comprises ethylene glycol monobutyl ether and an ester solvent.
2. The thermal transfer method using the thermal transfer ink according to claim 1, wherein: the mass ratio of HM-diisocyanate and HMDI polyisocyanate in the curing agent is 1% and 99% respectively.
3. The thermal transfer method of an ink for thermal transfer according to claim 1, characterized in that: the mass ratio of ethylene glycol monobutyl ether to ester solvent in the diluent is 1% and 99% respectively.
4. The thermal transfer method of an ink for thermal transfer according to claim 1, characterized in that: the glue printed in the steps S25 and S27 comprises the following components in percentage by mass: 45% of EVA resin, 25% of dimethylbenzene, 25% of tackifier and 5% of antioxidant.
CN202110046683.4A 2021-01-14 2021-01-14 Ink for thermal transfer printing and thermal transfer printing method Active CN112708306B (en)

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Application Number Priority Date Filing Date Title
CN202110046683.4A CN112708306B (en) 2021-01-14 2021-01-14 Ink for thermal transfer printing and thermal transfer printing method

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CN112708306B true CN112708306B (en) 2022-05-20

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Publication number Priority date Publication date Assignee Title
CN105479963B (en) * 2015-12-23 2018-05-11 喻盛 A kind of heat-transferring method for being used for dark cloth
CN108219631A (en) * 2017-12-28 2018-06-29 滁州金桥德克新材料有限公司 One kind is for water transfer dual-cured coating and preparation method thereof
CN109291676B (en) * 2018-09-14 2020-12-15 赵忠祥 Manufacturing method of light-aluminum heat transfer film and manufacturing method of ceiling or wallboard
KR102237480B1 (en) * 2019-06-24 2021-04-16 (주)세경하이테크 Manufacturing method of deco-film for housing of smart phone thermal transfer-ink ribbon having patterned layer and the deco-film for housing of smart phone manufactured by the same

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