CN112549805B - Oxidation-resistant black card gold stamping process - Google Patents
Oxidation-resistant black card gold stamping process Download PDFInfo
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- CN112549805B CN112549805B CN202011303499.5A CN202011303499A CN112549805B CN 112549805 B CN112549805 B CN 112549805B CN 202011303499 A CN202011303499 A CN 202011303499A CN 112549805 B CN112549805 B CN 112549805B
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- 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
- B41M1/22—Metallic printing; Printing with powdered inks
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- 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
- B41M1/24—Inking and printing with a printer's forme combined with embossing
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- 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
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/36—Printing on other surfaces than ordinary paper on pretreated paper, e.g. parchment, oiled paper, paper for registration purposes
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Abstract
The invention belongs to the technical field of gold stamping processes, and particularly relates to an oxidation-resistant black card gold stamping process, which comprises the following steps of: providing a black paperboard, and placing the black paperboard on a stamping machine; providing a gold stamping material, and thermoprinting the gold stamping material on a black paperboard by a gilding machine to form gold stamping pictures and texts; the gold stamping pattern comprises a substrate film, a release layer, a color layer, a vacuum aluminizing layer, an antioxidation layer and a bonding layer which are sequentially arranged, wherein the bonding layer is bonded to the outer surface of the black paperboard. In the process, the gold stamping material is sequentially and uniformly hot stamped and coated on the release layer, the color layer, the vacuum aluminum plating layer, the antioxidation layer and the bonding layer through the gold stamping machine to form gold stamping graph, wherein the antioxidation layer of the gold stamping graph is arranged between the vacuum aluminum plating layer and the bonding layer, so that air can be prevented from directly contacting the vacuum aluminum plating layer through the bonding layer with multiple gaps, the oxidization rate of the vacuum aluminum plating layer is reduced, and thus, the excellent antioxidation effect is formed, the good texture of the black card is ensured, and the production cost can be reduced.
Description
Technical Field
The invention belongs to the technical field of gold stamping processes, and particularly relates to an oxidation-resistant black card gold stamping process.
Background
With the rapid development of the cross-regional cooperation of economy, the living standard of people is increasingly improved, and higher requirements are put on high-quality surface decoration. In the packaging design, the black ground color is replaced by black paperboard to be applied together with a gold stamping process, so that the packaging structure has better texture, better visual and tactile effects and higher grade than four-color printing and spot color gold printing.
However, as the pigment component of the black paperboard currently used for gilding contains a large amount of carbon elements, the carbon elements and aluminum elements in the gilding material are very easy to generate oxidation reaction in the environment with electrolyte, moisture and salt, the reaction changes the original components of the electrochemical aluminum, and the gilding graphics on the black paperboard can be discolored, blackened, discolored and the like after being used for a period of time. This problem is a major problem in the industry. To avoid such problems, the following treatments are generally adopted in the industry:
in the first method, a film coating treatment is performed. And a layer of film is coated on the surface of the black paperboard to isolate the black paperboard from the gold stamping foil. The method has stable effect, but the method changes the surface texture of the black paperboard, and cannot meet the artistic requirements of partial clients on the texture effect of the product;
the second method is to apply a UV primer. Printing a layer of UV base oil on the position of the black paperboard, which needs to be gilded, so as to isolate the black paperboard from gilt foil on the black paperboard. Since UV base oil is a very thin layer of oil, its effect is limited. The method can achieve a certain effect, but has high cost and is not acceptable for a plurality of clients.
Therefore, the black paperboard gilt technology which can solve the problem of direct gilt oxidation of the black paperboard, simultaneously maintain the original texture effect of the black paperboard and have no cost increase becomes a new issue. The black card direct gold stamping antioxidation technology becomes a development direction of gold stamping.
Disclosure of Invention
The invention aims to provide an antioxidant black card gold stamping process, and aims to solve the technical problems of changing the texture of a black card and high cost in a black card gold stamping antioxidant mode in the prior art.
In order to achieve the above purpose, the anti-oxidation black card gold stamping process provided by the embodiment of the invention comprises the following steps:
providing a black paperboard, and placing the black paperboard on a stamping machine;
providing a gold stamping material, and thermoprinting the gold stamping material on the black paperboard by using the gold stamping machine to form gold stamping pictures and texts;
the gold stamping pattern comprises a substrate film, a release layer, a color layer, a vacuum aluminum plating layer, an antioxidant layer and a bonding layer which are sequentially arranged, wherein the bonding layer is bonded to the outer surface of the black paperboard.
Further, the black paperboard has a moisture content of between 6 and 12%, a bulk density of between 0.72 and 0.76gsm, a burst index of between 2.60 and 2.88kPa/g, a ring crush compression index of between 7.1 and 8.7n.m/g (high torque per gram), a total surface absorption value of between 55 and 60gsm, and a smoothness of between 9 and 15S.
Further, the basis weight of the black paperboard is 250G, the thickness is 0.3mm, and the tightness is 0.7G/cm 2 。
Further, the bronzing material comprises:
thermoprinting a polypropylene fiber film forming the substrate film;
thermoprinting to form silicone methyl branched silicone oil of the release layer;
thermoprinting a metal complex dye forming the color layer;
thermoprinting to form aluminum wires of the vacuum aluminized layer;
thermoprinting TDI-PB-SBHPP to form the antioxidation layer;
and hot stamping polymethyl methacrylate and silicon dioxide powder forming the bonding layer.
Further, the thickness of the substrate film is between 13 and 18 mu m, the thickness of the release layer is between 0.55+/-0.015 mu m, the thickness of the color layer is between 0.4 and 0.83 mu m, the thickness of the vacuum aluminized layer is between 12.3+/-0.97 mu m, and the thickness of the antioxidation layer is between 8 and 11 mu m.
Further, the coating dry weight of the release layer is 0.045+/-0.0015 g/m 2 The coating dry weight of the color layer is 1.20+/-0.02 g/m 2 Between them.
Further, the purity of the aluminum wires used in the hot stamping of the vacuum aluminum plating layer is more than or equal to 99.98 percent.
Further, the mass part ratio of the polymethyl methacrylate to the silicon dioxide powder is 80:8.
further, the production environment temperature of the thermoprinting machine is 23-26.5 ℃, and the production environment humidity is 50-60%.
Further, the machine pressure is between 22 and 30 pounds, the machine temperature is between 120 and 130 ℃, and the production speed is between 800 and 1200 sheets/hour when the thermoprinting machine executes thermoprinting.
The above technical solutions in the antioxidant black card gold stamping process provided by the embodiments of the present invention have at least one of the following technical effects: in the anti-oxidation black card stamping process, a stamping material is sequentially and uniformly hot stamped and coated on a black card paper through a stamping machine to form a stamping image, wherein the anti-oxidation layer of the stamping image is arranged between the vacuum aluminum plating layer and the bonding layer, so that air can be prevented from directly contacting the vacuum aluminum plating layer through the bonding layer with multiple gaps, the oxidation rate of the vacuum aluminum plating layer is reduced, an excellent anti-oxidation effect is formed, the good texture of the black card is ensured, and the production cost can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of an antioxidant black card stamping process provided by an embodiment of the invention.
Fig. 2 is a cut-away view of a black card processed by the anti-oxidation black card stamping process according to an embodiment of the present invention.
Wherein, each reference sign in the figure:
10-black paperboard 20-gold stamping graph-text 21-base material film
22-release layer 23-color layer 24-vacuum aluminized layer
25-oxidation-resistant layer 26-adhesive layer.
Detailed Description
The embodiments described below by referring to the drawings are exemplary and intended to illustrate embodiments of the invention and should not be construed as limiting the invention.
In one embodiment of the present invention, as shown in fig. 1-2, an oxidation-resistant black card stamping process is provided, comprising the steps of:
s100: providing a black paperboard 10, and placing the black paperboard 10 on a stamping machine;
s200: providing a gold stamping material, and thermoprinting the gold stamping material on the black paperboard 10 through the gold stamping machine to form gold stamping pictures and texts 20;
the gilt picture and text 20 includes a substrate film 21, a release layer 22, a color layer 23, a vacuum aluminized layer 24, an antioxidation layer 25 and an adhesive layer 26 which are sequentially arranged, wherein the adhesive layer 26 is adhered to the outer surface of the black paperboard 10. Specifically, the substrate film 21 is used as a carrier for manufacturing and information transmission of the whole gold stamping film, has higher tensile strength and better wettability, and ensures uniformity and leveling property of the release layer 22 coated on the substrate film 21. The release layer 22 ensures abrasion resistance and print surface brightness after stamping for a continuously controllable peel over length and width. The color layer 23 is key to the development of the hot stamping foil, and dye with high light transmittance is used to ensure the definition, peelability, physical and chemical surface resistance, brightness and adhesion effect with the metal layer after hot stamping when the color layer 23 is prepared. After the vacuum aluminized layer 24 is formed, the two surfaces are smooth like a mirror, so as to reflect the incident light of the color layer 23 to realize the strong metal texture of the hot stamping foil. The antioxidation layer 25 primarily functions to prevent air from penetrating through the multi-void bonding layer 26 and directly contacting the vacuum aluminized layer 24 to reduce the oxidation rate of the vacuum aluminized layer 24. The adhesive layer 26 has the properties of softening by heating and cooling and hardening, and can be repeatedly used without generating chemical property change viscosity to ensure the image-text adhesiveness, covering force and workability of the hot stamping to the black paperboard 10, and ensure the definition of the hot stamping and the definition of the peeling hot stamping.
In the anti-oxidation black card stamping process of the embodiment of the invention, a stamping material is sequentially and uniformly hot stamped and coated on the black card paper 10 through a stamping machine to form the stamping graph-text 20 by the release layer 22, the color layer 23, the vacuum aluminum plating layer 24, the anti-oxidation layer 25 and the bonding layer 26, wherein the anti-oxidation layer 25 of the stamping graph-text 20 is arranged between the vacuum aluminum plating layer 24 and the bonding layer 26, so that air can be prevented from directly contacting with the vacuum aluminum plating layer 24 through the bonding layer 26 with multiple gaps, the oxidation rate of the vacuum aluminum plating layer 24 is reduced, the excellent anti-oxidation effect is formed, the good quality of the black card is ensured, and the production cost can be reduced.
Further, in the present embodiment, the moisture content of the black paperboard 10 is between 6% and 12%, for example, the moisture content of the black paperboard 10 may be 6%,7%, 8%, 9%, 10%, 11% or 12%. While the bulk density of the black paperboard 10 is between 0.72 and 0.76gsm, i.e. the bulk density of the black paperboard 10 may be 0.72gsm, 0.73gsm, 0.74gsm, 0.75gsm or 0.76gsm, etc.
The burst index of the black paperboard 10 is between 2.60 and 2.88kPa/g, i.e. the burst index of the black paperboard 10 may be 2.60kPa/g, 2.70kPa/g, 2.80kPa/g, 2.88kPa/g, etc.
The ring crush compression index of the black paperboard 10 is between 7.1 and 8.7N.m/g (large torque per gram), i.e. the ring crush compression index of the black paperboard 10 may be 7.1N.m/g, 7.2N.m/g, 7.3N.m/g, 7.4N.m/g, 7.5N.m/g, 7.6N.m/g, 7.7N.m/g, 8.0N.m/g, 8.3N.m/g, 8.5N.m/g, 8.6N.m/g, 8.7N.m/g, etc.
The surface absorption total value of the black paperboard 10 is between 55 and 60gsm, i.e. the surface absorption total value of the black paperboard 10 may be 55gsm, 56gsm, 57gsm, 58gsm, 59gsm, 60gsm, etc.
The smoothness of the black paperboard 10 is between 9 and 15S. That is, the smoothness of the black jam 10 may be 9S, 10S, 11S, 12S, 13S, 14S, 15S, or the like.
Further, in the present embodiment, the black paperboard 10 has a basis weight of 250G, a thickness of 0.3mm and a tightness of 0.7G/cm 2 。
Preferably, the black paperboard 10 is formed by one step of pure wood pulp, is fine and smooth in paper quality, uniform in blackness, firm and solid, good in folding endurance, flat and smooth in surface, good in stiffness, good in tension, high in bursting strength and the like, does not contain harmful chemical agents such as chlorine elements, volatilizable sulfur, organic benzene and the like, and meets the requirements of the national standard on limiting the metal elements in the package.
Further, in this embodiment, the gold stamping material includes polypropylene fiber film, silicone methyl branched silicone oil, metal complex dye, aluminum wire, TDI-PB-SBHPP, polymethyl methacrylate and silicon dioxide powder. Wherein, the metal complex dye is a dye containing coordinated metal atoms in the molecule, and can be dissolved in an organic solvent. Major outsourcing suppliers: axk chemical Co., dongguan, guangdong. TDI-PB-SBHPP is the SBHPP entity of Sumitomo electric Co., ltd., which is prepared into a macromolecular antioxidant containing phenolic hydroxyl group by utilizing NCO group on toluene diisocyanate to react with hydroxyl end group of polybutadiene, and then enabling C=C double bond on polybutadiene chain segment to react with sulfhydryl group on 6-sulfhydryl 3-methyl propionate.
Wherein the base film 21 is formed by hot stamping and is a polypropylene fiber film; the release layer 22 is formed by hot stamping and is silicone methyl branched silicone oil; the color layer 23 is formed by hot stamping is metal complex dye; the vacuum aluminized layer 24 is formed by hot stamping and is made of aluminum wires; the TDI-PB-SBHPP is thermoprinted to form the oxidation resistant layer 25; thermoprinting forms the adhesive layer 26 from polymethyl methacrylate and silicon dioxide powder.
Further, in the present embodiment, the thickness of the base film 21 is between 13 μm and 18 μm, that is, the thickness of the base film 21 may be 13 μm, 14 μm, 15 μm, 16 μm, 17 μm or 18 μm.
The thickness of the release layer 22 is between 0.55±0.015 μm, and the thickness of the release layer 22 may be 0.535 μm, 0.54 μm, 0.55 μm, 0.56 μm, 0.565 μm, or the like.
The thickness of the color layer 23 is between 0.4 and 0.83 μm, i.e. the thickness of the color layer 23 may be 0.4 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 or 0.83 μm, etc.
The thickness of the vacuum aluminized layer 24 is between 12.3+/-0.97 mu m, namely, the thickness of the vacuum aluminized layer 24 is 11.33 mu m, 11.5 mu m, 12 mu m, 12.5 mu m, 13 mu m or 13.27 mu m, etc.
The thickness of the antioxidation layer 25 is between 8 and 11 μm, i.e., the thickness of the antioxidation layer 25 may be 8 μm, 9 μm, 10 μm, 11 μm, or the like.
Further, in this embodiment, the release layer 22 has a dry coating weight of 0.045.+ -. 0.0015g/m 2 The coating dry weight of the release layer 22 can be 0.04485g/m 2 、0.0449g/m 2 、0.045g/m 2 、0.0451g/m 2 Or 0.4515g/m 2 Etc.
The coating dry weight of the color layer 23 is 1.20+ -0.02 g/m 2 The coating dry weight of the intermediate, i.e. color layer 23 may be 1.18g/m 2 、1.20g/m 2 、1.21g/m 2 Or 1.22g/m 2 Etc.
Further, in this embodiment, the purity of the aluminum wire used in the hot stamping of the vacuum aluminum plating layer 24 is greater than or equal to 99.98%.
Further, in this embodiment, the mass portion ratio of the polymethyl methacrylate to the silicon dioxide powder is 80:8.
through verifying actual production for many times, when each coating of the gilding material is set as above, the gilding material produced has the best antioxidation effect.
Further, in this embodiment, the temperature of the production environment where the thermoprinting machine is located is between 23 ℃ and 26.5 ℃, that is, the temperature of the production environment where the thermoprinting machine is located may be 23 ℃, 24 ℃, 25 ℃, 26 ℃, 26.5 ℃ or the like. Further, the humidity of the production environment is 50-60%, and the humidity of the production environment is 50% or 60%.
Further, in this embodiment, the machine pressure when the thermoprinting machine performs thermoprinting is between 22 and 30 lbs., that is, the machine pressure when the thermoprinting machine performs thermoprinting may be 22 lbs., 23 lbs., 24 lbs., 25 lbs., 26 lbs., 27 lbs., 28 lbs., 29 lbs., 30 lbs., etc. The machine temperature is between 120 and 130 ℃, i.e. the machine temperature can be 120 ℃, 125 ℃ or 130 ℃. The production speed is 800-1200 sheets/hour, i.e. the production speed may be 800 sheets/hour, 900 sheets/hour, 1000 sheets/hour, 1100 sheets/hour or 1200 sheets/hour.
The temperature, humidity and production speed of the production environment of the thermoprinting machine determine the adsorption force and wear resistance of the gilt pictures and texts 20 on the black paperboard 10. Through multiple tests, the stamping effect is best when the stamping machine meets the requirements.
According to the qualified gold stamping materials, the technology that the images and texts of the gold stamping templates are required to be transferred to the surface of the hot stamping black paperboard 10 is utilized to test the oxidation problems of adhesion, wear resistance, color change, blackening, fading and the like of the gold stamping images and texts by visual inspection, so that the images and texts which are hot stamped on the black paperboard have stable performance, good glossiness, good wear resistance and oxidation resistance, high temperature and sun irradiation are avoided, and the storage period at normal temperature is one year or more, and is particularly referred to the index conditions in the following table 1.
Table 1 further, adhesion force detection was performed for the black card that completed the gold stamping process, as shown in table 2 below:
TABLE 2
Further, an eraser friction test was performed on a black card that completed the gold stamping process, as shown in table 3 below:
TABLE 3 Table 3
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (3)
1. An antioxidation black card gilding process is characterized in that: the method comprises the following steps:
providing a black paperboard, and placing the black paperboard on a stamping machine;
providing a gold stamping material, and thermoprinting the gold stamping material on the black paperboard by using the gold stamping machine to form gold stamping pictures and texts; the gold stamping pattern comprises a substrate film, a release layer, a color layer, a vacuum aluminum plating layer, an antioxidant layer and a bonding layer which are sequentially arranged, wherein the bonding layer is bonded to the outer surface of the black paperboard; wherein, evenly in proper order the gilt material through gilt machine on black card paper gilt coating from layer, colour layer, vacuum aluminizing layer, antioxidation layer and tie coat and form gilt picture and text, gilt material includes: thermoprinting a polypropylene fiber film forming the substrate film; thermoprinting to form silicone methyl branched silicone oil of the release layer; thermoprinting a light-transmitting metal complex dye forming the color layer; thermoprint formationAluminum wires of the vacuum aluminum plating layer; thermoprinting TDI-PB-SBHPP to form the antioxidation layer; wherein the metal complex dye is a dye containing coordination metal atoms in molecules and can be dissolved in an organic solvent, the thickness of the color layer is between 0.4 and 0.83 mu m, and the coating dry weight of the color layer is 1.20+/-0.02 g/m 2 The moisture content of the black paperboard is between 6 and 12 percent, the volume density is between 0.72 and 0.76gsm, the bursting index is between 2.60 and 2.88kPa/g, the ring crush compression index is between 7.1 and 8.7N.m/g, the total surface absorption value is between 55 and 60gsm, and the smoothness is between 9 and 15S;
the ration of the black paperboard is 250G, the thickness is 0.3mm, and the tightness is 0.7G/cm < 2 >; the machine pressure is between 22 and 30 pounds when the stamping machine executes the stamping, the machine temperature is between 120 and 130 ℃, and the production speed is between 800 and 1200 sheets/hour, wherein the black paperboard is formed by pure wood pulp at one time, and does not contain chlorine elements, volatilizable sulfur and organic benzene;
the purity of the aluminum wires used in the hot stamping of the vacuum aluminum plating layer is more than or equal to 99.98 percent;
the temperature of the production environment where the gilding press is located is 23-26.5 ℃, and the humidity of the production environment is 50-60%.
2. The oxidation resistant black card stamping process according to claim 1, wherein: the thickness of the base material film is between 13 and 18 mu m, the thickness of the release layer is between 0.55+/-0.015 mu m, the thickness of the vacuum aluminized layer is between 12.3+/-0.97 mu m, and the thickness of the antioxidation layer is between 8 and 11 mu m.
3. The oxidation resistant black card stamping process according to claim 2, wherein: the coating dry weight of the release layer is between 0.045+/-0.0015 g/m < 2 >.
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| CN205467992U (en) * | 2016-01-19 | 2016-08-17 | 扬州市祥华新材料科技有限公司 | Three -dimensional unsmooth boiling hot electrochemical aluminium foil |
| CN205836293U (en) * | 2016-06-12 | 2016-12-28 | 扬州市祥华新材料科技有限公司 | A kind of antioxidation stamping systems |
| CN107033288B (en) * | 2016-11-23 | 2019-12-27 | 广东英科集团股份有限公司 | Antioxidant emulsion and antioxidant water-based coating gloss oil prepared by using same |
| CN206749302U (en) * | 2017-03-07 | 2017-12-15 | 扬州市祥华新材料科技有限公司 | Alloy layer hot stamping foil |
| CN107042723B (en) * | 2017-03-09 | 2020-03-10 | 虎彩印艺股份有限公司 | Electroless aluminum gold stamping product and preparation process thereof |
| CN107538946A (en) * | 2017-08-21 | 2018-01-05 | 广州市恒远彩印有限公司 | A kind of black paperboard bronzing method |
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