CN114953820A - Manufacturing process of package with two metal effects - Google Patents
Manufacturing process of package with two metal effects Download PDFInfo
- Publication number
- CN114953820A CN114953820A CN202210416041.3A CN202210416041A CN114953820A CN 114953820 A CN114953820 A CN 114953820A CN 202210416041 A CN202210416041 A CN 202210416041A CN 114953820 A CN114953820 A CN 114953820A
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- Prior art keywords
- hot stamping
- plate
- mould pressing
- machine
- film
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- 230000000694 effects Effects 0.000 title claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 28
- 239000002184 metal Substances 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000003825 pressing Methods 0.000 claims abstract description 69
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 32
- 239000011248 coating agent Substances 0.000 claims abstract description 22
- 238000000576 coating method Methods 0.000 claims abstract description 22
- 229920002799 BoPET Polymers 0.000 claims abstract description 21
- 238000005269 aluminizing Methods 0.000 claims abstract description 20
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 16
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000007731 hot pressing Methods 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 30
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 30
- 238000007747 plating Methods 0.000 claims description 15
- 238000007639 printing Methods 0.000 claims description 11
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 10
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 239000002390 adhesive tape Substances 0.000 claims description 7
- 239000002519 antifouling agent Substances 0.000 claims description 7
- 230000001680 brushing effect Effects 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 7
- 238000005323 electroforming Methods 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 7
- 238000010030 laminating Methods 0.000 claims description 7
- 238000005868 electrolysis reaction Methods 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 3
- 238000010894 electron beam technology Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 238000002309 gasification Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 5
- 238000004806 packaging method and process Methods 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- 239000000654 additive Substances 0.000 description 6
- 230000000996 additive effect Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 238000007723 die pressing method Methods 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 239000000123 paper Substances 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- GJLUFTKZCBBYMV-UHFFFAOYSA-N carbamimidoylsulfanyl carbamimidothioate Chemical compound NC(=N)SSC(N)=N GJLUFTKZCBBYMV-UHFFFAOYSA-N 0.000 description 3
- PVTGORQEZYKPDK-UHFFFAOYSA-N ethenylthiourea Chemical compound NC(=S)NC=C PVTGORQEZYKPDK-UHFFFAOYSA-N 0.000 description 3
- 239000002932 luster Substances 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 206010033546 Pallor Diseases 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
- B44C1/17—Dry transfer
- B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
- B44C1/1729—Hot stamping techniques
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Printing Methods (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention discloses a manufacturing process of a package with two metal effects, which comprises the following steps: preparing a hot stamping plate, preparing a transfer film and hot stamping, wherein the step S1 is to prepare the hot stamping plate: removing the oxide film on the layout, finishing the layout by using a finishing liquid, and corroding the layout by using a corrosive liquid; s2 preparation of transfer film: forming a nickel layer on the surface of the mould pressing mother set, installing the mould pressing mother set on a mould pressing machine, carrying out mould pressing on a PET film, carrying out vacuum aluminizing, and coating a transfer film on a medium to be printed through three steps of gluing, drying and hot pressing; s3 hot stamping: and (4) installing the hot stamping plate prepared in the step (S1) on a hot stamping machine, and carrying out local hot stamping on the medium to be printed prepared in the step (S2). The invention can flexibly select the metal effect ranges of various shapes and various size ratios according to the design requirement, can form two metal effects, and has high-grade feeling in the aspects of vision and texture; the invention has simple process, convenient operation, wide application range and low cost.
Description
Technical Field
The invention relates to the technical field of printing, in particular to a manufacturing process of a package with two metal effects.
Background
The transfer film is an intermediate carrier, present on a transfer paper or plastic substrate, carrying a printed or printed pattern, for transfer to a layer of chemi-elastic film on the printed article. And a layer of aluminum is vapor-plated on the molded PET transfer base film to form a laser transfer film, and the laser transfer film is coated on the paperboard and can be used for packaging delicate products. Paper packaging using the laser transfer film can form gorgeous metal luster on the surface, which is difficult to realize by other production processes. Meanwhile, the technical process is simple, the cost is relatively low, the better packaging effect can be realized at lower cost, the anti-counterfeiting paper is commonly used for tobacco packaging, daily necessities packaging and cosmetics packaging nowadays, and even a special edition can be manufactured for anti-counterfeiting packaging.
However, when two or more metal performance effects are required on the package, the conventional laser transfer film is difficult to realize. Expensive special edition cost and difficult recycling are main reasons for limiting the hot stamping technology, and the hot stamping technology is needed to achieve the target effect. The laser transfer film is subjected to hot stamping, so that the limitation of the laser transfer film can be solved. However, the existing literature does not find relevant reports on how to use the blanching technology on the laser transfer film.
Disclosure of Invention
In order to solve the problems, the invention adopts the hot stamping technology on the laser transfer film to realize the manufacturing process of the package with two metal effects.
The invention is realized by the following technical scheme:
a manufacturing process of a package with two metal effects comprises the following steps: preparing a thermoprinting plate, preparing a transfer film and thermoprinting, wherein the process comprises the following specific steps:
s1, preparing a hot stamping plate: coating anti-corrosion protective paint or sticking transparent adhesive tape on the back of the hot stamping plate; brushing the plate surface of the hot stamping plate by using ferric chloride solution with the concentration of 0.8-1.2%, and removing an oxide film on the plate surface to expose the natural color of copper; finishing the layout by using a finishing liquid to prevent pockmarks; corroding the layout by using a corrosive liquid;
s2, preparing a transfer film: putting the mould pressing mother plate into an electroforming tank for electrolysis, and forming a nickel layer on the surface of the mould pressing mother plate; installing the mould pressing mother plate on a mould pressing machine, and carrying out mould pressing on the PET film by using the mould pressing machine; vacuum aluminizing the PET film by using a vacuum aluminizing machine; coating a transfer film on a medium to be printed by using a pre-coating film laminating machine through three steps of gluing, drying and hot pressing;
s3, hot stamping: and (4) installing the hot stamping plate prepared in the step (S1) on a hot stamping machine, and carrying out local hot stamping on the medium to be printed prepared in the step (S2).
Preferably, the slope included angle of the surface of the hot stamping plate is 110-120 degrees, and the depth is more than 0.6 mm.
Preferably, the thickness of the nickel layer on the surface of the stamping master plate is 40-100 μm.
Preferably, in step S2, the mold pressing temperature is 160 to 180 ℃ during the mold pressing process, the initial pressure at the beginning of the mold pressing is 0.4MPa, and the initial pressure is gradually increased to 0.45MPa during the mold pressing process.
Preferably, in the step S2, the degree of vacuum aluminum plating is 5.33 × 10 during the aluminum plating process -2 Pa～6. 54 × 10 -2 And Pa, heating the aluminum wire to 1400-1500 ℃ by using a resistor, high frequency or electron beam for gasification, and quickly evaporating, diffusing and depositing the gasified aluminum wire on the surface of the PET film to finish the process of aluminizing the PET film.
Preferably, in step S2, in the aluminum plating process, the impurities in the aluminum wire are within 0.003% and the aluminum plating film thickness is 1 μm to 3 μm.
Preferably, in step S3, the printing plate temperature is 110 ℃ to 120 ℃, the temperature of the hot stamping machine is 120 ℃ to 140 ℃, and the hot stamping pressure is 4.0kg/cm 2 ～5.0kg/cm 2 And the hot stamping time is 1-3 s.
Preferably, in step S3, the stamping plate manufactured in step S1 is mounted on a stamping machine, specifically, the stamping plate manufactured in step S1 is mounted on a bottom plate, and then the bottom plate is firmly fixed on an electric heating plate of the stamping machine.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, special paper with a metal effect is not required to be used, the metal effect ranges of various shapes and various size ratios can be flexibly selected on the common paperboard according to the design requirement, two metal effects can be formed, and the high-grade sense is achieved in the aspects of vision and texture;
2. the invention has simple process, convenient operation, no limit on printing technology and wide application range;
3. by using the process, the equipment input level is reduced, and the cost for manufacturing the special edition can be reduced.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments below:
a manufacturing process of a package with two metal effects comprises the following steps: preparing a thermoprinting plate, preparing a transfer film and thermoprinting, wherein the process comprises the following specific steps:
s1, preparing a hot stamping plate: coating anti-corrosion protective paint or sticking transparent adhesive tape on the back of the hot stamping plate; brushing the plate surface of the hot stamping plate with ferric chloride solution with the concentration of 0.8-1.2%, removing an oxide film on the plate surface, and exposing the natural color of copper; finishing the layout with the whole face liquid to prevent pockmarks; corroding the layout by using a corrosive liquid;
s2, preparing a transfer film: putting the mould pressing mother plate into an electroforming tank for electrolysis, and forming a nickel layer on the surface of the mould pressing mother plate; installing the mould pressing mother plate on a mould pressing machine, and carrying out mould pressing on the PET film by using the mould pressing machine; vacuum aluminizing the PET film by using a vacuum aluminizing machine; coating a transfer film on a medium to be printed by using a pre-coating film laminating machine through three steps of gluing, drying and hot pressing;
s3, hot stamping: and (4) installing the hot stamping plate prepared in the step (S1) on a hot stamping machine, and carrying out local hot stamping on the medium to be printed prepared in the step (S2).
In the embodiment, the finishing liquid is a commercially available product, and the raw materials of the finishing liquid comprise 8-10 parts by mass of water, 2-5 parts by mass of salt and 0.5-1.5 parts by mass of glacial acetic acid.
In this embodiment, the raw materials of the corrosive liquid include ferric chloride, water, formamidine disulfide, and vinyl thiourea.
Specifically, the preparation process of the corrosive liquid comprises the following steps:
(1) preparing stock solution: pre-dissolving ferric chloride in water, and stirring for sufficient hydrolysis;
(2) and (3) storing the old liquid: the ratio of 1 of new and old liquid medicine is 1: 1 or 3: 1 each time;
(3) preparing a zinc plate additive: the mass ratio of the formamidine disulfide to the vinyl thiourea is 2: 1.
(4) Preparing a corrosive liquid: and (3) adding the new liquid and the old liquid into a washing etching machine according to the formula, stirring for 5 minutes after starting the machine, adding the zinc plate additive, and stirring for 15 minutes at the stirring rotation speed of 300-600 revolutions, wherein 3-5 drops of the zinc plate additive can be added if the etching liquid has bubbles.
It is understood that the preparation liquid may be used without the old liquid, that is: the preparation process of the corrosive liquid comprises the following steps:
(1) preparing stock solution: pre-dissolving ferric chloride in water, and stirring for sufficient hydrolysis;
(2) preparing an additive: the mass ratio of the formamidine disulfide to the vinyl thiourea is 2: 1.
(3) Preparing a corrosive liquid: washing the etching machine with clean water, adding the new liquid and the additive according to the formula, and stirring for 15 minutes at the stirring rotation speed of 300-600 revolutions, wherein 3-5 drops of the zinc plate additive can be added if the etching liquid has bubbles.
Furthermore, the slope included angle of the surface of the hot stamping plate is 110-120 degrees, and the depth is more than 0.6 mm.
After the step S1, the image and text of the surface of the hot stamping plate are complete, the requirement of film is met, the slope is smooth and clean, no pockmark exists, and the inter-character gap meets the hot stamping requirement.
Further, the thickness of the nickel layer on the surface of the mould pressing mother set is 40-100 mu m.
The die pressing mother set is made of special metal sheets, the die pressing mother set is placed in an electroforming tank, electrolyte containing nickel ions is electrolyzed by using an electrochemical principle, a nickel layer with the thickness of 40-100 um is formed on the surface of the die pressing mother set, the manufactured die pressing mother set has hardness and flexibility, deformation is not generated under high-temperature baking, and no defect is generated on the observation surface under a microscope.
Further, in step S2, the mold pressing temperature is 160 to 180 ℃ during the mold pressing process, the initial pressure at the start of the mold pressing is 0.4MPa, and the initial pressure is gradually increased to 0.45MPa during the mold pressing process.
The compression roller of the molding press is made of silicon rubber, the hardness is 90-94 degrees, and in order to enable the molding effect to be obvious and clear, the surface of the compression roller needs to be flat and smooth.
Further, in step S2, vacuum aluminum plating is performed during the aluminum plating processThe void degree is 5.33 multiplied by 10 -2 Pa～6. 54 × 10 -2 And Pa, heating the aluminum wire to 1400-1500 ℃ by using a resistor, high frequency or electron beam for gasification, and quickly evaporating, diffusing and depositing the gasified aluminum wire on the surface of the PET film to finish the process of aluminizing the PET film.
Further, in step S2, in the aluminum plating process, the impurities in the aluminum wire are within 0.003%, and the aluminum plating film thickness is 1 μm to 3 μm.
The preparation work before the hot stamping mainly comprises the following steps: checking and selecting an electrochemical aluminum film, preparing a hot stamping plate and checking a hot stamping machine. Selecting an alumite hot stamping film with good quality; checking whether the surface of a thermoprinting plate has the defects of uneven burrs, irregular edges and corners, unclear pictures and texts and the like, corroding and trimming unqualified places, and then performing plate thermoprinting; and (4) checking the hot stamping machine before hot stamping to ensure that the pressure and the temperature are normal.
Further, in step S3, the temperature of the printing plate is 110 ℃ to 120 ℃, the temperature of the hot stamping machine is 120 ℃ to 140 ℃, and the hot stamping pressure is 4.0kg/cm 2 ～5.0kg/cm 2 And the hot stamping time is 1-3 s.
When the temperature of the printing plate is too low, the problems of weak adhesive force, no pattern hot stamping, no gloss, hair and the like can occur. When the temperature is too high, the plate is pasted, the pictures and texts are unclear, the white color is generated, and the brightness of the metal light is reduced. The hot stamping temperature is also related to the hot stamping area, and when the hot stamping area is large, the temperature needs to be slightly higher; otherwise it is lower.
The hot stamping pressure is determined according to the nature, thickness and hot stamping form of the object to be stamped, and is higher than the ordinary printing pressure. The larger the hot stamping area is, the larger the hot stamping pressure is, and otherwise, the smaller the hot stamping pressure is.
Generally speaking, after the hot stamping time is fixed, the hot stamping temperature and pressure are adjusted to reduce the variables, simplify the operation and easily control the quality.
Further, in step S3, the hot stamping plate manufactured in step S1 is mounted on a hot stamping machine, specifically, the hot stamping plate manufactured in step S1 is mounted on a base plate, and then the base plate is firmly fixed on an electric heating plate of the hot stamping machine.
The installation of the hot stamping plate not only ensures good heating effect, but also is convenient for manual operation and production. According to the hot stamping effect, the padding plate is processed to the local unevenness and the hot stamping effect is not good, so that the pressure at each position is uniform.
After hot stamping, the hot stamping area on the laser transfer film has the hot stamping effect to be shown, and the hot stamping pattern is clear. Because the laser transfer film has scratch resistance, other parts are not affected by high temperature and high pressure generated during hot stamping, still have laser effect and metal luster, and show two or more than two metal display effects on the same sample sheet.
The present invention will be described in detail with reference to specific examples.
Example 1
A manufacturing process of a package with two metal effects comprises the following steps: preparing a thermoprinting plate, preparing a transfer film and thermoprinting, wherein the process comprises the following specific steps:
s1, preparing a hot stamping plate: coating anti-corrosion protective paint or sticking transparent adhesive tape on the back of the hot stamping plate; brushing the plate surface of the hot stamping plate with ferric chloride solution with the concentration of 1.0%, removing an oxide film on the plate surface, and exposing the natural color of copper; using the whole face liquid to finish the layout and preventing pockmarks; corroding the layout by using a corrosive liquid; the slope included angle of the surface of the hot stamping plate is 110-120 degrees, and the depth is more than 0.6 mm.
S2, preparing a transfer film: putting the mould pressing mother plate into an electroforming tank for electrolysis, and forming a nickel layer on the surface of the mould pressing mother plate, wherein the thickness of the nickel layer is 40 mu m; installing the mould pressing mother plate on a mould pressing machine, and carrying out mould pressing on the PET film by using the mould pressing machine, wherein the mould pressing temperature is 160 ℃, the initial pressure at the beginning of the mould pressing is 0.4MPa, and the initial pressure is gradually increased to 0.45MPa in the mould pressing process; vacuum aluminizing was performed on the PET film with a vacuum aluminizing machine with a vacuum degree of 5.33X 10 -2 Pa～6. 54 × 10 -2 Pa, the heating temperature is 1400 ℃, the impurities in the aluminum wire are within 0.003 percent, and the thickness of the aluminum plating film is 1-3 mu m; coating a transfer film on a medium to be printed by using a pre-coating film laminating machine through three steps of gluing, drying and hot pressing;
s3, hot stamping: installing the hot stamping plate prepared in the step S1 on a bottom plate, and then firmly fixing the bottom plate on an electric heating plate of a hot stamping machine, wherein the hot stamping plate is prepared in the step S2The medium to be printed is subjected to local hot stamping, the temperature of a printing plate is 110 ℃, the temperature of a hot stamping machine is 120 ℃, and the hot stamping pressure is 4.0kg/cm 2 And the hot stamping time is 3 s.
Example 2
A manufacturing process of a package with two metal effects comprises the following steps: preparing a thermoprinting plate, preparing a transfer film and thermoprinting, wherein the process comprises the following specific steps:
s1, preparing a hot stamping plate: coating anti-corrosion protective paint or sticking transparent adhesive tape on the back of the hot stamping plate; brushing the plate surface of the hot stamping plate by using a ferric chloride solution with the concentration of 0.8%, removing an oxide film on the plate surface, and exposing the natural color of copper; finishing the layout with the whole face liquid to prevent pockmarks; corroding the layout by using a corrosive liquid; the slope included angle of the surface of the hot stamping plate is 110-120 degrees, and the depth is more than 0.6 mm.
S2, preparing a transfer film: putting the mould pressing mother plate into an electroforming tank for electrolysis, and forming a nickel layer on the surface of the mould pressing mother plate, wherein the thickness of the nickel layer is 70 mu m; installing the mould pressing mother plate on a mould pressing machine, and carrying out mould pressing on the PET film by using the mould pressing machine, wherein the mould pressing temperature is 170 ℃, the initial pressure at the beginning of the mould pressing is 0.4MPa, and the initial pressure is gradually increased to 0.45MPa in the mould pressing process; vacuum aluminizing is carried out on the PET film by a vacuum aluminizing machine, and the vacuum aluminizing degree is 5.33 multiplied by 10 -2 Pa～6. 54 × 10 -2 Pa, the heating temperature is 1500 ℃, the impurities in the aluminum wire are within 0.003 percent, and the thickness of the aluminum plating film is 1-3 mu m; coating a transfer film on a medium to be printed by using a pre-coating film laminating machine through three steps of gluing, drying and hot pressing;
s3, hot stamping: installing the hot stamping plate prepared in the step S1 on a bottom plate, then firmly fixing the bottom plate on an electric hot plate of a hot stamping machine, and carrying out local hot stamping on the medium to be printed prepared in the step S2, wherein the temperature of the printing plate is 120 ℃, the temperature of the hot stamping machine is 130 ℃, and the hot stamping pressure is 5.0kg/cm 2 And the hot stamping time is 2 s.
Example 3
A manufacturing process of a package with two metal effects comprises the following steps: preparing a thermoprinting plate, preparing a transfer film and thermoprinting, wherein the specific steps of the processes are as follows:
s1, preparing a hot stamping plate: coating anti-corrosion protective paint or sticking transparent adhesive tape on the back of the hot stamping plate; brushing the plate surface of the hot stamping plate by using ferric chloride solution with the concentration of 1.2%, removing an oxide film on the plate surface, and exposing the natural color of copper; finishing the layout with the whole face liquid to prevent pockmarks; corroding the layout by using a corrosive liquid; the slope included angle of the surface of the hot stamping plate is 110-120 degrees, and the depth is more than 0.6 mm.
S2, preparing a transfer film: putting the mould pressing mother board into an electroforming tank for electrolysis, and forming a nickel layer on the surface of the mould pressing mother board, wherein the thickness of the nickel layer is 100 mu m; installing the mould pressing mother plate on a mould pressing machine, and carrying out mould pressing on the PET film by using the mould pressing machine, wherein the mould pressing temperature is 180 ℃, the initial pressure at the beginning of the mould pressing is 0.4MPa, and the initial pressure is gradually increased to 0.45MPa in the mould pressing process; vacuum aluminizing is carried out on the PET film by a vacuum aluminizing machine, and the vacuum aluminizing degree is 5.33 multiplied by 10 -2 Pa～6. 54 × 10 -2 Pa, the heating temperature is 1500 ℃, the impurities in the aluminum wire are within 0.003 percent, and the thickness of the aluminum plating film is 1-3 mu m; coating a transfer film on a medium to be printed by using a pre-coating film laminating machine through three steps of gluing, drying and hot pressing;
s3, hot stamping: installing the hot stamping plate prepared in the step S1 on a bottom plate, then firmly fixing the bottom plate on an electric hot plate of a hot stamping machine, and carrying out local hot stamping on the medium to be printed prepared in the step S2, wherein the temperature of a printing plate is 120 ℃, the temperature of the hot stamping machine is 140 ℃, and the hot stamping pressure is 5.0kg/cm 2 And the hot stamping time is 3 s.
Example 4
A manufacturing process of a package with two metal effects comprises the following steps: preparing a thermoprinting plate, preparing a transfer film and thermoprinting, wherein the process comprises the following specific steps:
s1, preparing a hot stamping plate: coating anti-corrosion protective paint or sticking transparent adhesive tape on the back of the hot stamping plate; brushing the plate surface of the hot stamping plate by using ferric chloride solution with the concentration of 1.2%, removing an oxide film on the plate surface, and exposing the natural color of copper; finishing the layout with the whole face liquid to prevent pockmarks; corroding the layout by using a corrosive liquid; the slope included angle of the surface of the hot stamping plate is 110-120 degrees, and the depth is more than 0.6 mm.
S2, preparing a transfer film: placing the molding master into an electric machineElectrolyzing in the casting tank, and forming a nickel layer on the surface of the mould pressing mother plate, wherein the thickness of the nickel layer is 80 mu m; installing the mould pressing mother plate on a mould pressing machine, and carrying out mould pressing on the PET film by using the mould pressing machine, wherein the mould pressing temperature is 180 ℃, the initial pressure at the beginning of the mould pressing is 0.4MPa, and the initial pressure is gradually increased to 0.45MPa in the mould pressing process; vacuum aluminizing was performed on the PET film with a vacuum aluminizing machine with a vacuum degree of 5.33X 10 -2 Pa～6. 54 × 10 -2 Pa, the heating temperature is 1400 ℃, the impurities in the aluminum wire are within 0.003 percent, and the thickness of the aluminum plating film is 1-3 mu m; coating a transfer film on a medium to be printed by using a pre-coating film laminating machine through three steps of gluing, drying and hot pressing;
s3, hot stamping: installing the hot stamping plate prepared in the step S1 on a bottom plate, then firmly fixing the bottom plate on an electric hot plate of a hot stamping machine, and carrying out local hot stamping on the medium to be printed prepared in the step S2, wherein the temperature of a printing plate is 120 ℃, the temperature of the hot stamping machine is 120 ℃, and the hot stamping pressure is 5.0kg/cm 2 The hot stamping time is 1 s.
After the medium to be printed in the embodiments 1 to 4 is hot-stamped, the hot-stamping area on the laser transfer film has the hot-stamping effect to be shown, and the hot-stamping pattern is clear. Because the laser transfer film has scratch resistance, other parts are not affected by high temperature and high pressure generated during hot stamping, still have laser effect and metal luster, and show two or more than two metal display effects on the same sample sheet.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A manufacturing process of a package with two metal effects is characterized by comprising the following working procedures: preparing a thermoprinting plate, preparing a transfer film and thermoprinting, wherein the process comprises the following specific steps:
s1, preparing a hot stamping plate: coating anti-corrosion protective paint or sticking transparent adhesive tape on the back of the hot stamping plate; brushing the layout of the hot stamping plate by using ferric chloride solution with the concentration of 0.8-1.2%, and removing an oxide film on the layout to expose the natural color of copper; finishing the layout by using a finishing liquid to prevent pockmarks; corroding the layout by using a corrosive liquid;
s2, preparing a transfer film: putting the mould pressing mother plate into an electroforming tank for electrolysis, and forming a nickel layer on the surface of the mould pressing mother plate; installing the mould pressing mother plate on a mould pressing machine, and carrying out mould pressing on the PET film by using the mould pressing machine; vacuum aluminizing the PET film by using a vacuum aluminizing machine; coating a transfer film on a medium to be printed by using a pre-coating film laminating machine through three steps of gluing, drying and hot pressing;
s3, hot stamping: and (4) installing the hot stamping plate prepared in the step (S1) on a hot stamping machine, and carrying out local hot stamping on the medium to be printed prepared in the step (S2).
2. The manufacturing process of a package with two metal effects as claimed in claim 1, wherein the slope included angle of the surface of the hot stamping plate is 110-120 ° and the depth is more than 0.6 mm.
3. The process for manufacturing a package with two metal effects according to claim 1, wherein the thickness of the nickel layer on the surface of the molding master is 40-100 μm.
4. The process of claim 1, wherein in step S2, the temperature of the mold pressing is 160-180 ℃, the initial pressure at the beginning of the mold pressing is 0.4MPa, and the initial pressure is gradually increased to 0.45MPa during the mold pressing.
5. The process of claim 1, wherein in step S2, the vacuum degree of vacuum aluminum plating is 5.33 x 10 during aluminum plating -2 Pa～6. 54 × 10 -2 And Pa, heating the aluminum wire to 1400-1500 ℃ by using a resistor, high frequency or electron beam for gasification, and quickly evaporating, diffusing and depositing the gasified aluminum wire on the surface of the PET film to finish the process of aluminizing the PET film.
6. The process of claim 1, wherein in step S2, the aluminum wire has less than 0.003% of impurities and the thickness of the aluminum plating film is 1 μm to 3 μm.
7. The process for manufacturing a package with two metal effects as claimed in claim 1, wherein in step S3, the temperature of the printing plate is 110 ℃ to 120 ℃, the temperature of the hot stamping machine is 120 ℃ to 140 ℃, and the hot stamping pressure is 4.0kg/cm 2 ～5.0kg/cm 2 And the hot stamping time is 1-3 s.
8. The process of claim 1, wherein in step S3, the stamping plate manufactured in step S1 is mounted on a stamping machine, specifically, the stamping plate manufactured in step S1 is mounted on a bottom plate, and then the bottom plate is firmly fixed on an electric heating plate of the stamping machine.
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