CN112375452B - Heat transfer printing film coating liquid replacing spray paint and heat transfer printing film - Google Patents
Heat transfer printing film coating liquid replacing spray paint and heat transfer printing film Download PDFInfo
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- CN112375452B CN112375452B CN202011280466.3A CN202011280466A CN112375452B CN 112375452 B CN112375452 B CN 112375452B CN 202011280466 A CN202011280466 A CN 202011280466A CN 112375452 B CN112375452 B CN 112375452B
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- 239000007788 liquid Substances 0.000 title claims abstract description 106
- 239000003973 paint Substances 0.000 title claims abstract description 35
- 238000010023 transfer printing Methods 0.000 title claims abstract description 32
- 239000007888 film coating Substances 0.000 title claims abstract description 21
- 238000009501 film coating Methods 0.000 title claims abstract description 21
- 239000007921 spray Substances 0.000 title claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 131
- 239000011248 coating agent Substances 0.000 claims abstract description 127
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims abstract description 93
- 238000012546 transfer Methods 0.000 claims abstract description 62
- 238000007639 printing Methods 0.000 claims abstract description 60
- -1 aldehyde ketone Chemical class 0.000 claims abstract description 38
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 33
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- 239000011347 resin Substances 0.000 claims abstract description 31
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 24
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 22
- 238000005507 spraying Methods 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 18
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- 238000004090 dissolution Methods 0.000 claims description 3
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- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
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Images
Classifications
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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
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/02—Condensation polymers of aldehydes or ketones only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F16/00—Transfer printing apparatus
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2461/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2461/02—Condensation polymers of aldehydes or ketones only
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a heat transfer film coating liquid for replacing spray paint and a heat transfer film, which comprise the following components in parts by weight: 1000 portions of dichloromethane and 1500 portions; 200-300 parts of polyurethane resin; 500 portions of aldehyde ketone resin and 700 portions of aldehyde ketone resin; 0.2-2 parts of a defoaming agent. According to the heat transfer film coating liquid and the heat transfer film replacing paint spraying, provided by the invention, the coating liquid can be attached to acrylic, metal and other materials which cannot be directly subjected to UV printing to form an intermediate coating, when the UV printing is performed, patterns can be directly printed on the intermediate coating, and the intermediate coating does not need to be sprayed with oil paint, so that not only is complicated manual paint spraying operation avoided, but also the condition that paint flavor overflows in a workshop is avoided, environmental pollution in the processing process is reduced, meanwhile, the harm to the health of workers in the workshop is reduced, meanwhile, after the heat transfer film is manufactured, direct transfer printing can be performed, the production efficiency is greatly improved, and meanwhile, the production cost is effectively reduced.
Description
Technical Field
The invention relates to the technical field of UV (ultraviolet) flat printing and printing, in particular to a thermal transfer film coating liquid for replacing spray painting and a thermal transfer film.
Background
For acrylic plates (organic glass) or metal plates, it is generally difficult to color them due to their intrinsic characteristics. At present, in order to ensure that printed patterns can be stably attached to acrylic plates or metal plates when UV flat printing is carried out, a layer of coating needs to be firstly made on the acrylic plates and the metal plates, otherwise, the patterns printed by a UV printer cannot be attached to the acrylic plates and the metal plates, printing cannot be carried out, and the coating made on the acrylic plates or the metal plates needs to be manually sprayed or brushed, so that the efficiency is low, the conditions of uneven coating thickness and unevenness are easily caused by the difference of the technical level of workers, meanwhile, the coating used in the coating is generally paint, the paint taste is strong, the processing environment is poor, and the health of the workers is greatly influenced; at the same time, the drying time required after spraying is also extremely long, which increases the printing costs overall.
In addition, for the acrylic plate, as the acrylic plate is transparent and is generally reversely printed, white ink needs to be sprayed on the back of the acrylic plate, then the adhesive sticker is pasted manually, the white ink generally needs to be sprayed and printed by a special machine, the spraying and printing speed of the white ink can only reach half of the normal pattern printing speed, the required processing time is long, the processing progress of the acrylic plate is slowed, the production cost of the acrylic plate is high, and the cost of one square meter in the single process is about 20 yuan.
Disclosure of Invention
In order to solve the problems, the invention provides a heat transfer film coating liquid and a heat transfer film for replacing paint spraying, wherein the heat transfer film made of the paint can play a role of an existing coating after being transferred to an acrylic plate or a metal plate, so that the production efficiency can be improved, the production cost can be reduced, no toxic and harmful substances are discharged during transfer, and no harm is caused to the health of workers.
The invention specifically adopts the following technical scheme for realizing the purpose:
the heat transfer film coating liquid capable of replacing spray paint comprises the following components in parts by weight: 1000 portions of dichloromethane and 1500 portions; 200-300 parts of polyurethane resin; 500 portions of aldehyde ketone resin and 700 portions of aldehyde ketone resin; 0.2-2 parts of a defoaming agent.
Furthermore, the coating liquid also comprises the following components in parts by weight: 800 portions of colorant and 1000 portions; 10-20 parts of a dispersing agent.
Furthermore, the colorant is titanium dioxide, medium chrome yellow, pearl gold powder, aluminum silver powder or carbon black.
The utility model provides an use heat-transfer die that above-mentioned heat-transfer die coating liquid was made, includes the PET base film, be provided with the printing layer that coating liquid made on the PET base film, the coating liquid formula on printing layer is: 1000 portions of dichloromethane and 1500 portions; 200-300 parts of polyurethane resin; 500 portions of aldehyde ketone resin and 700 portions of aldehyde ketone resin; 0.2-2 parts of a defoaming agent.
Still further, the thickness of the printed layer was 0.6 filaments.
Furthermore, a light shielding layer made of coating liquid is arranged on the printing layer, and the coating liquid formula of the light shielding layer is as follows: 1000 portions of dichloromethane and 1500 portions; 200-300 parts of polyurethane resin; 500 portions of aldehyde ketone resin and 700 portions of aldehyde ketone resin; 0.2-2 parts of a defoaming agent; 800 portions of colorant and 1000 portions; 10-20 parts of a dispersing agent.
Furthermore, the thickness of the light shielding layer is 1.4 threads, and the thickness of the printing layer is 0.3 threads.
Furthermore, the coating solution for the light shielding layer is prepared as follows:
(1) carrying out high-speed dissolution on polyurethane resin and aldehyde ketone resin by using dichloromethane for 1h to form transparent liquid;
(2) adding a coloring agent, a dispersing agent and a defoaming agent into the transparent liquid, and continuously dispersing for 1h to obtain a coating liquid;
the coating liquid used for the printing layer is prepared in the following way:
and (3) dissolving the polyurethane resin, the aldehyde ketone resin and the defoaming agent in dichloromethane at a high speed for 1h to obtain the coating liquid.
The invention has the following beneficial effects:
1. the coating liquid provided by the invention can be attached to materials such as acrylic and metal which can not be directly subjected to UV printing to form an intermediate coating, when the UV printing is performed, patterns can be directly printed on the intermediate coating without spraying an oil paint as the intermediate coating, so that the complicated manual paint spraying operation is avoided, the condition that the workshop is full of paint smell is avoided, the environmental pollution in the processing process is reduced, and the harm to the health of workers in the workshop is reduced;
2. the coating liquid is matched with the PET base film to manufacture the thermal transfer printing film, when the thermal transfer printing film is used, the thermal transfer printing film can be printed and printed by transferring the thermal transfer printing film to the surface of an object to be printed by using a thermal transfer printing machine, the thermal transfer printing film can be prepared and stored in advance, and when the UV printing is carried out, the UV printing efficiency can be effectively improved;
3. in the traditional construction mode, manual spray paint is used as an intermediate coating for printing, the cost of one square meter is about 20 yuan, and the time from spraying to drying is generally 12 hours, while the thermal transfer printing film is used for thermal transfer printing to form the intermediate coating for printing, the one square meter only needs 5 yuan, and the transfer printing time only needs 20 seconds; the cost of one square meter of back white of the traditional acrylic machine is generally about 17-20 yuan, the processing time is about 10min, the heat transfer film of the invention is adopted to carry out acrylic back white treatment, the cost of one square meter still only needs about 5 yuan, the transfer time also only needs 20s, namely compared with the traditional process, the production efficiency of the invention is 20 times of that of the traditional mode, the cost only reaches 1/5 of the traditional process, the processing cost and the processing time are greatly reduced, the printing and acrylic plate back white cost can be effectively reduced, the gospel is brought to manufacturers and consumers, the processing efficiency can be effectively improved, and the production capacity of enterprises can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of the overall structure of a production line provided by the present invention;
FIG. 2 is a schematic cross-sectional view of a sealed gravure component;
FIG. 3 is a schematic diagram of a front structure of a storage bin;
FIG. 4 is a schematic side view of a storage bin;
FIG. 5 is a schematic diagram of a top view of the storage bin;
FIG. 6 is a schematic view of a double-lipped seal end sleeve configuration;
reference numerals: 1-unwinding device, 2-sealing gravure device, 3-anilox roller, 4-storage bin, 5-driving roller, 6-first waste gas collecting device, 7-drying box, 8-second waste gas collecting device, 9-cold air box, 10-drying device, 12-winding device, 13-floating ball box, 14-double-lip sealing end sleeve, 15-worm gear lifter, 16-lifting frame, 17-speed reducer, 18-floating ball box fixing plate, 19-scraper blade, 20-tetrafluoro sealing plate, 21-lifting rocking wheel, 22-scraper pressing plate, 23-sealing plate pressing plate, 24-photoelectric switch, 25-hollow floating ball, 26-first channel, 27-second channel, 28-infusion pipeline, 29-electromagnetic valve, 30-a positioning plate, 31-a discharge gap, 32-a positioning plate, 33-a first lip-shaped oil seal, 34-a second lip-shaped oil seal, 35-a first sealing ring, 36-a locking screw, 37-a second sealing ring, 38-a baffle and 39-a cooling cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like refer to the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which the product of the present invention is conventionally placed in use, and are used for convenience of description and simplification of description, but do not refer to or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "in communication" are to be interpreted broadly, e.g., as either fixed or removable communication, or integrally connected; either mechanically or electrically; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides a heat transfer printing film coating liquid for replacing spray paint, which comprises the following components in parts by weight: 1000 portions of dichloromethane and 1500 portions; 200-300 parts of polyurethane resin; 500 portions of aldehyde ketone resin and 700 portions of aldehyde ketone resin; 0.2-2 parts of defoaming agent, the coating liquid can be quickly dried to form a colorless and transparent coating, the coating can be well attached to materials such as acrylic and metal to form an intermediate coating, a UV printer can be directly used for printing a desired pattern on the intermediate coating at a later stage, the intermediate coating has good affinity with printing ink and cannot fall off or fade, and meanwhile, the problems that the environment is polluted and the health of workers is influenced because a large amount of toxic and harmful substances are generated because paint is used as the intermediate coating in the prior art can be avoided. Wherein the defoaming agent is organosilicon defoaming agent, and the dispersing agent can be acrylic acid esterified polysiloxane copolymer, acrylic ester functional polyether modified polydimethylsiloxane, polyether siloxane copolymer, etc.
For some products, the back to be printed has various colors, and for this reason, the coating liquid also comprises the following components in parts by weight: 800 portions of colorant and 1000 portions; 10-20 parts of a dispersing agent. The colorant is titanium dioxide, medium chrome yellow, pearl gold powder, aluminum silver powder or carbon black, and can be white, golden, silver, black and the like, so that the colorant has more selectivity and can better meet the requirements of customers. And the white coating liquid prepared from the titanium dioxide can also be used as the back white of the acrylic plate.
The utility model provides an use heat-transfer die that above-mentioned heat-transfer die coating liquid was made, includes the PET base film, be provided with the printing layer that coating liquid made on the PET base film, the coating liquid formula on printing layer is: 1000 portions of dichloromethane and 1500 portions; 200-300 parts of polyurethane resin; 500 portions of aldehyde ketone resin and 700 portions of aldehyde ketone resin; 0.2-2 parts of defoaming agent, which not only has better fastness when the PET base film is combined and can not fall off, but also can be better combined with printing ink, so that the problem of falling off of the printing ink in the using process can not occur. Wherein, in order to make the printing layer can be better combined with the article to be printed and the printing ink, the thickness of the printing layer is 0.6 silk.
For an article to be printed needing a non-transparent intermediate coating, a light shielding layer made of coating liquid is arranged on the printing layer, and the coating liquid formula of the light shielding layer is as follows: 1000 portions of dichloromethane and 1500 portions; 200-300 parts of polyurethane resin; 500 portions of aldehyde ketone resin and 700 portions of aldehyde ketone resin; 0.2-2 parts of a defoaming agent; 800 portions of colorant and 1000 portions; 10-20 parts of a dispersing agent. Wherein, the colorant can be selected according to the required color, for example, the acrylic plate back white is selected to be titanium dioxide.
The thickness of the shading layer is 1.4 threads, and the thickness of the printing layer is 0.3 threads.
Specifically, the coating solution for the light shielding layer is prepared as follows:
(1) carrying out high-speed dissolution on polyurethane resin and aldehyde ketone resin by using dichloromethane for 1h to form transparent liquid;
(2) adding a coloring agent, a dispersing agent and a defoaming agent into the transparent liquid, and continuously dispersing for 1h to obtain a coating liquid;
the coating liquid used for the printing layer is prepared in the following way:
and (3) dissolving the polyurethane resin, the aldehyde ketone resin and the defoaming agent in dichloromethane at a high speed for 1h to obtain the coating liquid.
When the coating solution and the base film are used to prepare the thermal transfer film, as shown in fig. 1, the following production line may be used: this production line includes unwinding device 1, by sealed gravure part, the coating unit that dry part and cold-air box 9 constitute, coiling mechanism 12 that set gradually along membrane moving direction, sealed gravure part includes feed bin 4, be located feed bin 4 anilox roller 3 and with anilox roller 3 complex drive roller 5, coating liquid is placed and is scribbled in feed bin 4, wherein unwinding device 1 unreels owing to treating the membrane of scribbling, generally include an unwinding roller and adjust the tensile tension roller of membrane, coiling mechanism 12 generally is to carrying out the rolling to the membrane that the coating was accomplished, form the membrane book, unwinding device 1 and coiling mechanism 12 are the conventional device in the coating industry, no longer describe here, simultaneously, according to the type of heat-transfer die and the thickness of coating, can select to set up multiunit coating unit.
When using, the film book that will wait to coat expandes through unwinding device 1 to pass sealed gravure part in proper order, dry part and cold wind box 9 position, cooperate by drive roller 5 and reticulation roller 3 and to the coating liquid coating in feed bin 4 to the membrane, then dry through dry part department, make the coating liquid layer form firm coating on the surface of membrane, then cool off through cold wind box 9, at last the rolling obtains the heat-transfer die promptly, and production speed can reach 300 meters/minute.
Aiming at two different heat transfer printing films, the first transparent heat transfer printing film comprises a PET (polyethylene terephthalate) base film and a heat transfer printing film which coats a transparent coating liquid on a printing layer formed above the PET base film, wherein the thickness of the printing layer is generally 0.6 silk, so that a plurality of groups of coating devices are arranged between the unwinding device 1 and the winding device 12, the PET base film is coated for a plurality of times, the thickness requirement can be met, and the coating effect can also be improved.
The second form of the heat transfer film is a color heat transfer film, which comprises a PET base film, a printing layer formed by coating transparent coating liquid on the PET base film, and a light shielding layer formed by coating color coating liquid on the printing layer, wherein at least 2 sets of coating devices are required to be arranged between the unwinding device 1 and the winding device 12 in the coating mode, and in order to enable the light shielding layer to have a good background or light shielding effect, the thickness of the printing layer can be 0.3 filament, and the thickness of the light shielding layer is 1.4 filament.
And in the coating process, because the boiling point of dichloromethane is lower, volatilize very easily, in order to prevent dichloromethane loss everywhere after the coating, be provided with between sealed gravure device 2 and the drying device 10 and be located the membrane and scribble the first exhaust gas collection device 6 of coating liquid one side, drying unit is including the drying cabinet 7 of locating the membrane outside, drying cabinet 7 is located the membrane and scribbles coating liquid one side and sets up second exhaust gas collection device 8, the air intake of drying cabinet 7 is located and keeps away from second exhaust gas collection device 8 one side, and the hot-blast fan in drying cabinet 7 respectively occupies one side of PET base film with second exhaust gas collection device 8 promptly, all be provided with the air exhauster in first exhaust gas collection device 6 and the second exhaust gas collection device 8. During coating, the dichloromethane is primarily collected by the first waste gas collecting device 6, and then the dichloromethane is secondarily collected by the second waste gas collecting device 8 in the drying process, and in the production process, tests show that the collected waste gas is sent into the freezing recovery device for recovery, so that the recovery rate of the dichloromethane can reach about 98%.
Although first waste gas recovery unit and second waste gas recovery unit can retrieve the dichloromethane after the coating, but can't prevent that dichloromethane from volatilizing between the coating, to this, 4 tops in feed bin are provided with the coating mouth, anilox roller 3 one side extends to the coating mouth outside with the cooperation of drive roller 5, coating mouth one side is provided with the scraper blade 19 that meets with anilox roller 3, and the opposite side is provided with the tetrafluoro closing plate 20 that meets with anilox roller 3, and scraper blade 19 is located PET membrane uncoated side, and tetrafluoro closing plate 20 is located one side of PET membrane coating completion, scraper blade 19, anilox roller 3, tetrafluoro closing plate 20 seal the coating mouth jointly.
When in use, the driving roller 5 and the anilox roller 3 rotate synchronously, the film continuously moves along with the rotation of the driving roller 5, at the moment, the anilox roller 3 is contacted with one surface of the film, the coating liquid is coated on the PET base film to finish coating, and the coating liquid is continuously dipped in the reticulate pattern in the storage bin 4 in the rotation process of the reticulate pattern roller 3, the coating liquid outside the reticulate pattern is scraped in the storage bin 4 by the scraper blade 19 and then coated, after the coating is finished, the anilox roller 3 and the tetrafluoro sealing plate 20 are pressed tightly and rotate to enter the stock bin 4 to continuously dip the coating liquid for continuous circulation, because the two sides of the coating opening are sealed by the scraper blade 19 and the PTFE sealing plate 20, the storage bin 4 is in a sealing state before and during coating, the dichloromethane solvent in the storage bin 4 can not volatilize, the coating liquid performance is ensured, and simultaneously, the environment of a production workshop can be well protected.
As a specific arrangement mode of the coating opening, please refer to fig. 2-5, the top of the stock bin 4 is provided with positioning plates 30 located at two sides of the coating opening, the edges of the positioning plates 30 are adapted to the shape of the anilox roller 3, and a discharge gap 31 is formed between the positioning plates 30 and the anilox roller 3, i.e. the edges of the positioning plates 30 are arc-shaped, and can be well matched to avoid scraping in the rotation process of the anilox roller 3, a scraper pressing plate 22 for fixing the scraper 19 at the top of the positioning plates 30 by screws is arranged above the scraper 19, the scraper 19 blocks the discharge gap 31 and abuts against the anilox roller 3, a sealing plate pressing plate 23 for fixing the tetrafluoro sealing plate 20 at the top of the positioning plates 30 by screws is arranged above the tetrafluoro sealing plate 20, the tetrafluoro sealing plate 20 blocks the discharge gap 31 and abuts against the anilox roller 3, so that the tetrafluoro sealing plate 20 and the scraper 19 have a sealing function, the coating liquid dipping of the anilox roller 3 is not affected.
In order to further enhance the sealing effect between the tetrafluoro sealing plate 20 and the anilox roller 3 and prevent dichloromethane from volatilizing, a baffle 38 extending towards the interior of the bin 4 is integrally formed on one side of the tetrafluoro sealing plate 20, which is in contact with the anilox roller 3, an included angle between the baffle 38 and the tetrafluoro sealing plate 20 is an acute angle, a slope is formed on one side of the baffle 38, which is in contact with the anilox roller 3, and the thickness of the baffle 38 is gradually reduced along the direction close to the interior of the bin 4. Baffle 38 and anilox roller 3 tightly offset, and baffle 38 tip is thinner, certain elasticity has, rotate the in-process at anilox roller 3, certain cushioning effect has, when making anilox roller 3 rotate, tetrafluoro closing plate 20 can not part with anilox roller 3 all the time, effectively promoted the sealed effect of feed bin 4, scraper blade 19 is generally only 0.2 mm's thickness simultaneously, itself has certain elasticity, also can keep the state of supporting tightly all the time with anilox roller 3, avoid appearing the gap, thereby promote the sealed effect of feed bin 4.
In order to perform normal coating, if a bearing is directly used at the joint, the mixing of lubricating oil and coating liquid is likely to occur, which affects the coating effect and is troublesome to maintain, for this reason, as shown in fig. 6, a double-lip seal end sleeve 14 is disposed at the joint between the two ends of the anilox roller 3 and the stock bin 4, an annular positioning plate 32 is integrally formed at one end of the double-lip seal end sleeve 14, a first lip oil seal 33 and a second lip oil seal 34 having opposite lips are disposed between the double-lip seal end sleeve 14 and the anilox roller 3, a cooling cavity 39 is disposed between the first lip oil seal 33 and the second lip oil seal 34, a first sealing ring 35 is disposed between the first lip oil seal 33 and the positioning plate 32, a locking screw 36 is disposed at one side of the second lip oil seal 34, and a second sealing ring 37 is disposed between the second lip oil seal 34 and the locking screw 36, locking screw 36 and the sealed pot head 14 threaded connection of two lips, because first sealing washer 35, second bee circle, first lip oil blanket 33 and second lip oil blanket 34 are all the flexible glue material, need compress tightly just can play sealed effect, but if press too tightly, then produce great wearing and tearing and heat easily, then can adjust the elasticity through adjustment locking screw 36 in this embodiment for it keeps under suitable pressure, can seal, can not produce too much wearing and tearing again.
In order to make sealed feed bin 4 more adapt to different production demands, 4 bottoms of feed bin are provided with the elevating gear who drives 4 lifts of sealed feed bin, elevating gear includes crane 16, install 2 worm gear lift 15 at crane 16 both ends respectively, realize the speed reducer 17 of 2 worm gear lift 15 linkages, utilize speed reducer 17 to drive the worm and rotate, thereby drive the worm wheel and rotate, make the lead screw rise or descend, realize the regulation of 4 heights of feed bin, the lead screw lift is current device, just no longer describe here, speed reducer 17 can select for use MRV40 speed reducer 17 simultaneously, also can dispose the lift rocking wheel 21 of course and carry out manual control.
Certainly, the same with current open-type feed bin, can set up swing mechanism and make feed bin 4 use anilox roller 3 to carry out the horizontal hunting as the center pin, specifically can be set up a motor outside feed bin 4, this motor stirs feed bin 4 through the worm gear transmission and carries out the horizontal hunting, and the swing radian is plus or minus 10mm to stripe appears when preventing to coat, promotes the effect of coating.
At present, in the coating process, the material in the feed bin 4 is added and is generally supplemented through manual monitoring, so that the working strength of workers is high, the problem of untimely material supplement is easy to occur, and the normal production can be influenced. In order to realize the automatic material supplementing of the storage bin 4, in this embodiment, a fixing plate is arranged on one side of the storage bin 4, a floating ball box 13 is fixed by the fixing plate, a first channel 26 communicated with the lower end of the storage bin 4 is arranged at the lower end of the floating ball box 13, a second channel 27 communicated with the upper end of the storage bin 4 is arranged at the upper end of the floating ball box 13, so that the liquid level in the floating ball box 13 can be flush with the liquid level in the storage bin 4, a hollow floating ball 25 is arranged in the floating ball box 13, the hollow floating ball 25 can be made of 304 stainless steel, a photoelectric switch 24 is arranged above the hollow floating ball 25, namely the photoelectric switch 24 is fixed at the top of the floating ball box 13, a liquid conveying pipeline 28 communicated with the storage bin 4 is arranged at the bottom of the storage bin 4, an electromagnetic valve 29 is arranged on the liquid conveying pipeline 28, the photoelectric switch 24 detects the position of the hollow floating ball 25 to control the opening and closing of the electromagnetic valve 29, namely the size of the floating ball box 13 is not too large, in order to avoid influencing photoelectric switch 24 and detect the position of floater, when the liquid level is low excessively in feed bin 4, hollow floater 25 descends and becomes far away with photoelectric switch 24's distance, after reaching a definite value, photoelectric switch 24 signals, make solenoid valve 29 open, in automatic mending feed bin 4 with coating liquid, and when the liquid level reaches a take the altitude in feed bin 4, the floater come-up, and the distance between photoelectric switch 24 diminishes to a definite value, solenoid valve 29 closes, stop sending into coating liquid in feed bin 4, and after the coating is ended, for the convenience of giving off remaining coating liquid in feed bin 4, can set up a guiding gutter in feed bin 4 bottom, and make infusion pipeline 28 and guiding gutter bottom intercommunication, can make the guiding gutter set up to the toper simultaneously, infusion pipeline 28 is located the lowest of guiding gutter.
Example 1
The transparent heat transfer printing film coating liquid capable of replacing spray paint comprises the following components in parts by weight: 1000 parts of dichloromethane; 200 parts of polyurethane resin; 500 parts of aldehyde ketone resin; 0.2 part of defoaming agent.
The coating liquid and the PET base film are made into the transparent heat transfer film 1-1 by the production line, the transparent heat transfer film 1-1 comprises the PET base film and a printing layer which is positioned on the PET base film and is made of the transparent coating liquid, and the thickness of the printing layer is 0.6 silk.
A white heat transfer printing film coating liquid replacing spray paint comprises the following components in parts by weight: 1000 parts of dichloromethane; 200 parts of polyurethane resin; 500 parts of aldehyde ketone resin; 0.2 part of defoaming agent; 800 parts of titanium dioxide; 12 parts of a dispersing agent.
The transparent coating liquid, the white coating liquid and the PET base film are manufactured into a white heat transfer film 1-2 by the production line, the white heat transfer film 1-2 comprises the PET base film, a printing layer which is positioned on the PET base film and is made of the transparent coating liquid, and a shading layer which is positioned above the printing layer and is made of the white coating liquid, wherein the thickness of the printing layer is 0.3 silk, and the thickness of the shading layer is 1.4 silk.
Example 2
The transparent heat transfer printing film coating liquid capable of replacing spray paint comprises the following components in parts by weight: 1200 parts of dichloromethane; 220 parts of polyurethane resin; 560 parts of aldehyde ketone resin; 0.9 part of defoaming agent.
The coating liquid and the PET base film are made into a transparent heat transfer film 2-1 by utilizing the production line, the transparent heat transfer film comprises the PET base film and a printing layer which is positioned on the PET base film and is made of the coating liquid layer, and the thickness of the printing layer is 0.6 silk.
A white heat transfer printing film coating liquid replacing spray paint comprises the following components in parts by weight: 1200 parts of dichloromethane; 200 parts of polyurethane resin; 500 parts of aldehyde ketone resin; 0.5 part of defoaming agent; 900 parts of titanium dioxide; 10 portions of dispersant
The transparent coating liquid, the white coating liquid and the PET base film are manufactured into a white heat transfer film 2-2 by the production line, the white heat transfer film 2-2 comprises the PET base film, a printing layer which is positioned on the PET base film and is made of the transparent coating liquid, and a shading layer which is positioned above the printing layer and is made of the white coating liquid, wherein the thickness of the printing layer is 0.3 silk, and the thickness of the shading layer is 1.4 silk.
Example 3
The transparent heat transfer printing film coating liquid capable of replacing spray paint comprises the following components in parts by weight: 1500 parts of dichloromethane; 250 parts of polyurethane resin; 700 parts of aldehyde ketone resin; and 2 parts of a defoaming agent.
The coating liquid and the PET base film are made into the transparent heat transfer film 3-1 by the production line, the transparent heat transfer film 3-1 comprises the PET base film and a printing layer which is positioned on the PET base film and is made of the coating liquid layer, and the thickness of the printing layer is 0.6 silk.
A white heat transfer printing film coating liquid replacing spray paint comprises the following components in parts by weight: 1500 parts of dichloromethane; 250 parts of polyurethane resin; 700 parts of aldehyde ketone resin; 2 parts of a defoaming agent; 1000 parts of titanium dioxide; 20 parts of a dispersing agent.
The transparent coating liquid, the white coating liquid and the PET base film are manufactured into a white heat transfer film 3-2 by the production line, the white heat transfer film 3-2 comprises the PET base film, a printing layer which is positioned on the PET base film and is made of the transparent coating liquid, and a shading layer which is positioned above the printing layer and is made of the white coating liquid, wherein the thickness of the printing layer is 0.3 silk, and the thickness of the shading layer is 1.4 silk.
Example 4
The transparent heat transfer printing film coating liquid capable of replacing spray paint comprises the following components in parts by weight: 1350 parts of dichloromethane; 260 parts of polyurethane resin; 520 parts of aldehyde ketone resin; 0.6 part of defoaming agent.
The coating liquid and the PET base film are made into the transparent heat transfer film 4-1 by utilizing the production line, the transparent heat transfer film 4-1 comprises the PET base film and a printing layer which is positioned on the PET base film and is made of the transparent coating liquid, and the thickness of the printing layer is 0.6 silk.
A white heat transfer printing film coating liquid replacing spray paint comprises the following components in parts by weight: 1350 parts of dichloromethane; 260 parts of polyurethane resin; 520 parts of aldehyde ketone resin; 0.6 part of defoaming agent; 900 parts of titanium dioxide; 15 parts of a dispersing agent.
The transparent coating liquid, the white coating liquid and the PET base film are manufactured into a white heat transfer film 4-2 by the production line, the white heat transfer film 4-2 comprises the PET base film, a printing layer which is positioned on the PET base film and is made of the transparent coating liquid, and a shading layer which is positioned above the printing layer and is made of the white coating liquid, wherein the thickness of the printing layer is 0.3 silk, and the thickness of the shading layer is 1.4 silk.
Test examples
The heat transfer films prepared in examples 1 to 4 were thermally transferred onto acrylic plates at 170 ℃, and during transfer, in order to test the temperature resistance, the films were kept on a transfer roll at 170 ℃ until the coatings were slightly yellow, and the yellow time was recorded, the acrylic plates were immersed in a water bath at 25 ℃ for 10 hours, and the films were observed to be soft, and the transfer films were subjected to a Baige test on the surface coatings of the acrylic plates, and the test results are shown in the following table 1:
table 1 test of performance of transfer coating of heat transfer film
Randomly selecting 100 acrylic plates with similar batch production, similar performance and same size, utilizing 10 acrylic plates of each transparent heat transfer film prepared in the embodiment 1-4 to perform heat transfer printing, and simultaneously painting the 10 acrylic plates with paint in a manual painting mode; using each of the white thermal transfer films prepared in examples 1 to 4 to randomly draw 10 acrylic sheets for thermal transfer printing, spraying white ink on the 10 acrylic sheets by using a machine, and recording the average time (including the drying time) required for the transparent thermal transfer film and the white thermal transfer film to transfer 1 square meter of acrylic sheet, the time (including the drying time) required for manually painting 1 square meter of acrylic sheet, and the time (including the drying time) required for machine spraying 1 square meter of acrylic sheet, as shown in table 2 below:
TABLE 2 comparison of the Using time of the conventional thermal transfer film of the present invention
| Item | Transparent heat transfer film | Manually brushing | White heat transfer printing film | Machine-sprayed white ink |
| Mean time | 20s | 12h | 20s | 10min |
Meanwhile, through accounting, the cost of one square meter is 20 yuan for the traditional mode of painting to manufacture the coating, and only 5 yuan is needed by adopting the transparent heat transfer film for transfer printing, 17-20 yuan is needed by one square meter of the back white of an acrylic plate machine, and only 5 yuan is needed by adopting the white heat transfer film for transfer printing.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (7)
1. The coating liquid for the heat transfer printing film for replacing spray painting is characterized by comprising the following components in parts by weight: 1000 portions of dichloromethane and 1500 portions; 200-300 parts of polyurethane resin; 500 portions of aldehyde ketone resin and 700 portions of aldehyde ketone resin; 0.2-2 parts of a defoaming agent;
the heat transfer film made of the coating liquid comprises: the PET base film and the printing layer formed by spraying the coating liquid on the PET base film, wherein the heat transfer film is transferred to a metal or acrylic plate.
2. The paint-alternative thermal transfer film coating liquid according to claim 1, further comprising the following components in parts by weight: 800 portions of colorant and 1000 portions; 10-20 parts of a dispersing agent.
3. The paint spraying-substituted thermal transfer film coating liquid according to claim 2, wherein the colorant is titanium dioxide, medium chrome yellow, pearl gold powder, aluminum silver powder or carbon black.
4. The paint spray paint replacement thermal transfer film coating liquid according to claim 3, wherein the thickness of the print layer is 0.6 filaments.
5. The paint spraying-substituted coating liquid for the thermal transfer film according to claim 3, wherein a light shielding layer made of the coating liquid is arranged on the printing layer, and the coating liquid formula of the light shielding layer comprises the following components in parts by weight: 1000 portions of dichloromethane and 1500 portions; 200-300 parts of polyurethane resin; 500 portions of aldehyde ketone resin and 700 portions of aldehyde ketone resin; 0.2-2 parts of a defoaming agent; 800 portions of colorant and 1000 portions; 10-20 parts of a dispersing agent.
6. The paint spray paint replacement thermal transfer film coating liquid according to claim 5, wherein the light shielding layer has a thickness of 1.4 filaments, and the print layer has a thickness of 0.3 filaments.
7. The paint spray paint replacement thermal transfer film coating liquid according to claim 5, wherein the coating liquid for the light shielding layer is prepared as follows:
(1) carrying out high-speed dissolution on polyurethane resin and aldehyde ketone resin by using dichloromethane for 1h to form transparent liquid;
(2) adding a coloring agent, a dispersing agent and a defoaming agent into the transparent liquid, and continuously dispersing for 1 hour to obtain the coating liquid.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327699A (en) * | 2006-07-23 | 2008-12-24 | 王兆进 | Transfer printing film capable of printing |
| CN106883437A (en) * | 2017-02-16 | 2017-06-23 | 香洋新材料（江苏）有限公司 | The preparation method of glass decoration panel reverse side thermoprint picture and text transfer film and the transfer printing process of the transfer film |
| CN111703226A (en) * | 2020-07-03 | 2020-09-25 | 福建鸣友新材料科技有限公司 | Resin-based thermal transfer ribbon with strong universality and preparation method thereof |
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| KR20010000216A (en) * | 2000-08-23 | 2001-01-05 | 정숙희 | Thermal transfer paper of partial solution for solid letter shape and method of manufacture |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327699A (en) * | 2006-07-23 | 2008-12-24 | 王兆进 | Transfer printing film capable of printing |
| CN106883437A (en) * | 2017-02-16 | 2017-06-23 | 香洋新材料（江苏）有限公司 | The preparation method of glass decoration panel reverse side thermoprint picture and text transfer film and the transfer printing process of the transfer film |
| CN111703226A (en) * | 2020-07-03 | 2020-09-25 | 福建鸣友新材料科技有限公司 | Resin-based thermal transfer ribbon with strong universality and preparation method thereof |
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