CN107042723A - A kind of electroless aluminum bronzing product and its preparation process - Google Patents

Abstract

The invention relates to the technical field of printing and gold stamping, in particular to an electroless aluminum gold stamping product and a preparation process thereof, wherein the electroless aluminum gold stamping process comprises the following steps: A. preparing a combined plate: adhering the gold stamping plate and the laser nickel plate engraved with the graphic and text information to the register by using high-temperature-resistant glue to manufacture a combined plate; B. paper coating: coating thermoplastic gloss oil or high-reflectivity coating on a position of paper needing gold stamping to prepare a coating layer; C. coating and gold stamping: and C, performing plate loading and machine loading on the combined plate prepared in the step A, and performing press fitting and gold stamping on the coating layer prepared in the step B to prepare the electroless aluminum gold stamping product. The method can thermoprint the graphic and text information of the laser nickel plate on the paper without an aluminum electrolyte, can present various laser effects on the paper through one process, and has the advantages of low production cost, good durability, short customization period, safety and environmental protection, and can meet the production requirements of multiple batches and small batches.

Description

A kind of electroless aluminum bronzing product and its preparation process

technical field

The invention relates to the technical field of printing hot stamping, in particular to an electroless aluminum hot stamping product and a preparation process thereof.

Background technique

Hot stamping is a printing and decoration process, which is to heat and apply foil to the metal printing plate, and emboss golden characters or patterns on the printed matter. With the rapid development of hot stamping foil and printing and packaging industries, the application of anodized aluminum hot stamping is increasing. more extensive. The traditional anodized aluminum hot stamping heats the anodized aluminum through the hot stamping plate, the peeling layer melts, and then the adhesive layer also melts. During embossing, the adhesive layer is bonded to the substrate, the colored layer is separated from the base layer of the polyester sheet, and the aluminized layer and The colored layer remains on the substrate.

Anodized aluminum is the main material used in hot stamping, but there are many problems in using anodized aluminum for hot stamping: (1) the reuse rate of anodized aluminum is low, and the waste phenomenon in the production process of hot stamping is serious; (2) the manufacturing process of anodized aluminum can High consumption and serious pollution; (3) The quality of anodized aluminum directly affects the effect of hot stamping. Wrinkles, poor surface gloss, and blurred outlines of graphics and texts in anodized aluminum will directly lead to paste, reverse pull, and hot stamping failure of hot stamping products. The above problems affect the quality of bronzing products; (4) Anodized aluminum bronzing process has a single layer of anodized aluminum foil, and one bronzing process can only be stamped with one effect. If three kinds of laser effect patterns are required, three bronzing processes can be realized. It is impossible to achieve a variety of laser effects in one hot stamping process; (5) The customization requirements of anodized aluminum are high, requiring large-scale customization, and the production and procurement cycle is long, resulting in high costs for small-batch and multi-batch production.

Contents of the invention

In order to overcome the shortcomings and deficiencies in the prior art, the object of the present invention is to provide an electroless aluminum hot stamping process, which can convert the graphic information of the laser nickel plate under the condition of an electroless aluminum medium. Foil stamping onto paper, achieving multiple laser effects in one process, low production cost, good durability, short customization cycle, safety and environmental protection, meeting the production needs of multiple batches and small batches.

Another object of the present invention is to provide an electroless aluminum bronzing product, which is produced through an electroless aluminum bronzing process. The product presents a variety of laser effects, rich and varied color patterns, and the laser effect is obvious, and It has better anti-counterfeiting function.

The object of the present invention is achieved through the following technical solutions: an electroless aluminum bronzing process, comprising the steps of:

A. Preparation of combined plate: use high temperature resistant glue to bond the bronzing plate with the laser nickel plate engraved with graphic information and register to make a combined plate;

B. Paper coating: apply thermoplastic varnish or high-reflective paint to the position of paper that needs to be bronzed to obtain a coating layer;

C. Coating bronzing: The combined plate prepared in step A is loaded on the machine, and the coated layer prepared in step B is pressed and bronzed to obtain an electroless aluminum bronzing product.

In the present invention, the hot stamping plate and the laser nickel plate engraved with graphic information are aligned and laminated with high-temperature-resistant glue, and the combined plate is pressed and bronzed at the coating position of the paper under a certain temperature and pressure, and the laser The graphic information of the nickel plate is hot-stamped on the paper, and it presents an excellent laser effect on the paper, and the non-electrochemical aluminum hot stamping product is produced. The hot stamping process does not need to use anodized aluminum medium, which solves the problem of low recycling rate of anodized aluminum. It avoids the waste and pollution of anodized aluminum, and the production process is simple to operate. After a hot stamping process, various laser effects can be displayed on the product at the same time, and multiple laser effects can be realized at one time. The production cost is low, safe and environmentally friendly, and can meet small batches, Manufacturing in multiple batches.

In addition, the paper to be hot stamped in the present invention is printing paper such as white cardboard, white board paper, black cardboard, composite paper and coated paper, and the laser effect after hot stamping is obvious.

Preferably, a boss is provided in the middle of the hot stamping plate, and the graphic information part of the laser nickel plate corresponds to the boss of the hot stamping plate, and they are aligned and bonded together.

The bronzing plate of the present invention is a carrier that provides hot stamping pressure for the image and text information, and by setting a boss in the middle of the bronzing plate, it can facilitate the alignment and lamination of the bronzing plate and the laser nickel plate, and facilitate the coating of the combined plate on the paper Accurate positioning of the layer for hot stamping, use the boss to accurately hot stamp the graphic information of the laser nickel plate on the paper that needs to be hot stamped, and realize a hot stamping process with multiple laser effects.

Preferably, in the step A, it is specifically: use the optical offset plate to carry out a replica to prepare a laser nickel plate, and perform surface polishing on the boss of the bronzing plate, and then use high temperature resistant glue to align the laser nickel plate and the bronzing plate .

In the present invention, the laser nickel plate is prepared by making use of the optical offset plate, which has high copying efficiency and low cost, and the prepared laser nickel plate has good durability and a short customization cycle; and the surface polishing treatment of the boss of the bronzing plate can avoid bronzing The uneven surface of the plate improves the registration fit between the hot stamping plate and the laser nickel plate, thereby improving the hot stamping effect.

Preferably, the thickness of the laser nickel plate is 10-100 μm, and the height of the boss is 1-3 mm.

The invention strictly controls the thickness of the laser nickel plate to be 10-100 μm, and strictly controls the height of the boss to be 1-3 mm, which can improve the registration fit between the hot stamping plate and the laser nickel plate, and facilitate the hot stamping process to transfer the hot stamping plate Text information and the laser effect of the laser nickel plate are hot stamped onto the paper.

Preferably, in the step B, the coating method is any one of offset coating, gravure coating or silk screen coating, and the amount of ink applied is 4-20 g/cm ² .

In the present invention, printing equipment such as gravure printing machine or screen printing machine is used to apply varnish or high-reflective coating on the position where the paper needs to be hot-stamped, and strictly control the amount of ink applied (coating amount) to 4-20 g/cm ² , can ensure the laser effect of subsequent hot stamping is excellent; if the amount of ink is too small, the laser effect of hot stamping will not be obvious; but if the amount of ink is too much, the hot stamping will be blurred and thick.

Preferably, in the step C, the hot stamping temperature is 80-140°C, the hot stamping speed is 1000-5000 PC/H, the pressing time is 0.1-0.3s, and the pressing pressure is 0.3-0.6Kg/cm ² .

By strictly controlling the above hot stamping process conditions, the present invention can effectively hot stamp the graphic information of the hot stamping plate and the laser effect of the laser nickel plate on the paper, realize hot stamping of various laser effects at one time, and the hot stamping effect is excellent, The laser effect of bronzing products is obvious.

Preferably, in the step A, the high temperature resistant glue is an epoxy resin high temperature resistant glue, and the epoxy resin high temperature resistant glue includes the following raw materials in parts by weight:

High temperature resistant epoxy resin 60-80 parts

High temperature resistant curing agent 10-15 parts

Anti-heat oxygen agent 5-10 parts

Toughener 5-10 parts

Filling 10-20 parts

15-25 parts of solvent.

The present invention prepares epoxy resin high-temperature-resistant glue by using the above raw materials, and strictly controls the weight of each raw material. The prepared epoxy resin high-temperature-resistant glue has better bonding strength, heat resistance and high temperature resistance, and curability. , Oxidation resistance and stability, high toughness, small creep, good overall performance, can bond the bronzing plate and the laser nickel plate stably, and the high temperature conditions of bronzing will not affect the stability and adhesion of the high temperature resistant adhesive and other performance impact.

Preferably, the high temperature resistant epoxy resin is a JEh-022 type high temperature resistant epoxy resin with a viscosity of 10000-15000mPa·s and an epoxy value of 0.60-0.65mol/100g; the high temperature resistant curing agent is made of methyl Tetrahydrophthalic anhydride, dodecenyl succinic anhydride and 2-ethyl-4-methylimidazole are a mixture of 2.4-3.2:1.5-2.5:1 in weight ratio; the curing condition of the high temperature resistant curing agent is at 80 Curing reaction at -100°C for 2.5-3.5h, and then curing at 150-170°C for 5.5-6.5h.

The present invention adopts JEh-022 type high temperature resistant epoxy resin with a viscosity of 10000-15000mPa·s and an epoxy value of 0.60-0.65mol/100g, whose bending strength is 115-120Mpa, tensile strength is 50-55MPa, organic Chlorine is less than 0.01mol/100g, it has better bonding strength, good high temperature resistance, easy to mix with other raw materials, and stable performance.

The curing temperature and heat resistance of the high-temperature-resistant curing agent have an influence on the cohesiveness and high-temperature resistance of the high-temperature-resistant adhesive. The methyl tetrahydrophthalic anhydride used in the present invention has a good curing effect and has a good interaction with epoxy resin. Soluble, but rarely used alone; the dodecenyl succinic anhydride used is an anhydride curing agent, and its heat resistance is the best among curing agents (the order of heat resistance of various curing agents is: aliphatic polyamine<alicyclic polyamine<aromatic polyamine<phenol aldehyde<acid anhydride), and dodecenyl succinic anhydride is easy to mix with the resin, has a long pot life, good toughness of the adhesive layer, and good thermal shock resistance; while 2-ethyl Base-4-methylimidazole has low toxicity, small dosage, long pot life, and medium-temperature curing. The adhesive prepared by using it has good bonding strength, good heat resistance and solvent resistance, and is currently an ideal curing agent. . And the present invention is by adopting methyltetrahydrophthalic anhydride, dodecenyl succinic anhydride and 2-ethyl-4-methylimidazole to compound and mix with weight ratio 2.4-3.2:1.5-2.5:1 as high temperature resistant curing agent, can Improve the mutual solubility of curing agent and epoxy resin and other raw materials, and the curing effect is good. The high temperature resistant adhesive has the characteristics of good bonding strength, good heat resistance and high temperature resistance, good toughness, good thermal shock resistance, etc., and further It improves the adhesion between the hot stamping plate and the laser nickel plate, and improves the stability of the hot stamping process.

Preferably, the structural formula of the anti-hot oxygen agent is as follows:

,or ;

Wherein, R ₁ is tert-butyl, R ₂ is methyl, methylene or sulfur;

The toughening agent is a mixture of acrylonitrile-butadiene-styrene copolymer, ethylene-vinyl acetate copolymer and acrylate polymer in a weight ratio of 1.4-2.2:2.5-3.5:1; The filler is a mixture composed of light calcium carbonate, talcum powder, silicon dioxide and barium sulfate in a weight ratio of 2.4-3.2:1:0.8-1.2:1.5-2.5.

The present invention adopts the anti-thermal oxygen agent of the above structure, which has the structure of hindered phenol, including symmetrical hindered phenol anti-thermal oxygen agent and asymmetric hindered phenol anti-thermal oxygen agent, and the symmetrical hindered phenol anti-thermal oxygen agent mainly includes alkyl Monophenolic anti-thermal oxygen agents (antioxidant 264, antioxidant 1076, etc.), alkyl polyphenols anti-thermal oxygen agents (antioxidant 1010, antioxidant 1098, etc.), thiopolyphenols anti-thermal oxygen Antioxidant (antioxidant 2246-S, antioxidant 300, etc.), asymmetric hindered phenol antithermal oxygen agent mainly includes antioxidant KY-586 and so on.

In the symmetrical alkyl monophenolic anti-thermal oxygen agent, the electron-repelling group is introduced at the ortho and para positions of the hydroxyl group in the structural formula, and the anti-oxidation efficiency is significantly increased; when R1 is _a large-volume substituent, it is beneficial to protect The phenolic hydroxyl group is not consumed by oxidation and the complexation of charge transfer is reduced to improve its antioxidant efficiency; when R2 is a long _- chain alkyl group, it is beneficial to improve the compatibility of reactants and further improve the performance of hindered phenolic antioxidants. efficiency. Therefore, by adopting the above-mentioned anti-oxidation agents in this application, the anti-oxidation performance and stability of the high-temperature-resistant adhesive can be significantly improved, and then the adhesion and stability of the high-temperature-resistant adhesive can be improved when the hot stamping plate and the laser nickel plate are laminated, ensuring the combination The quality and stability of the plate make the performance of the bronzing process stable.

The present invention uses a mixture of acrylonitrile-butadiene-styrene copolymer, ethylene-vinyl acetate copolymer and acrylic polymer with a weight ratio of 1.4-2.2:2.5-3.5:1 as the additive. Toughness agent, can improve the toughness of high temperature resistant glue, and make the high temperature resistant glue have better compatibility, adhesion, thermal shock resistance, aging resistance and softness, good processing performance, improve the high temperature resistant glue will bronzing The adhesion between the plate and the laser nickel plate makes the performance of the bronzing process stable.

Another object of the present invention is achieved through the following technical solution: an electroless aluminum bronzing product, which is produced according to the above electroless aluminum bronzing process. The electroless aluminum bronzing product produced by the electroless aluminum bronzing process of the present invention is processed by a bronzing process, and can realize multiple laser effects at one time, with rich and varied color patterns, obvious laser effects, and better anti-counterfeiting function.

The beneficial effects of the present invention are as follows: (1) The present invention can manufacture various laser effects on the laser nickel plate by engraving graphic information on the laser nickel plate, and polish the bronzing plate, and then combine the bronzing plate with the laser The combined plate is made by laminating the nickel plate. Under a certain temperature and pressure, the coating position of the paper is pressed and stamped, and the graphic information of the laser nickel plate is stamped on the paper, and it presents an excellent laser effect. Non-electrochemical aluminum bronzing products, the bronzing process does not need to use anodized aluminum medium, which solves the problem of low reuse rate of anodized aluminum and avoids the waste and pollution of anodized aluminum.

(2) The materials used in the bronzing plate and the laser nickel plate of the present invention are environmentally friendly and pollution-free green materials. The reprinting process of the laser nickel plate is faster, and the surface polishing process of the bronzing plate is simple and convenient, which reduces the cost of the process and has better Durability and stability, short customization cycle, can meet the production and manufacturing of small batches and multiple batches.

(3) The electroless aluminum hot stamping process of the present invention directly positions and hot stamps the local position on the paper that needs to be stamped with a laser effect through the combined plate, which realizes the local laser effect on the paper, and makes a laser with good quality and graphic information. The combination version with good effect can make bronzing products have excellent laser effect, and solve the problem of "poor quality of bronzing products caused by poor quality of anodized aluminum".

(4) The electroless aluminum hot stamping process of the present invention combines the hot stamping plate with the laser nickel plate engraved with graphic information, and the laser nickel plate has a variety of laser effects. Laser effect, hot stamping with multiple laser effects at one time, simplifies the hot stamping process, and improves production efficiency.

(5) The electroless aluminum hot stamping product prepared by the present invention is processed by one hot stamping process, and hot stamping with various laser effects can be realized at one time. The color patterns are rich and diverse, the laser effect is obvious, and it has better anti-counterfeiting function.

Description of drawings

Fig. 1 is the schematic diagram of electroless aluminum bronzing process of the present invention;

Fig. 2 is a structural sectional view of the combined version of the present invention;

Reference signs are: 1—hot stamping plate, 11—boss, 2—laser nickel plate, 21—graphic information, 3—paper, 31—coating layer.

detailed description

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings 1-2, and the contents mentioned in the implementation modes are not limitations of the present invention.

Example 1

As shown in accompanying drawing 1, a kind of electroless aluminum bronzing process comprises the steps:

A. Preparation of combined version: use high temperature resistant glue to bond hot stamping version 1 and laser nickel version 2 engraved with graphic information 21 with registration to make a combined version;

B. Paper coating: apply thermoplastic varnish or high-reflective paint to the position of the paper 3 that needs to be bronzed to obtain the coating layer 31;

C. Coating bronzing: the combined plate prepared in step A is loaded on the machine, and the coated layer 31 prepared in step B is pressed and bronzed to obtain an electroless aluminum bronzing product.

As shown in the accompanying drawings 1-2, the middle part of the hot stamping plate 1 is provided with a boss 11, and the graphic information 21 of the laser nickel plate 2 corresponds to the boss 11 of the hot stamping plate 1, and they are aligned and bonded together.

In the step A, it is specifically: use the optical offset plate to carry out a replica to prepare the laser nickel plate 2, and perform surface polishing treatment on the boss 11 of the bronzing plate 1, and then use high temperature resistant glue to register the laser nickel plate 2 and the bronzing plate 1 fit.

As shown in Figures 1-2, the thickness of the laser nickel plate 2 is 10 μm, and the height of the boss 11 is 1 mm.

In the step B, the coating method is offset coating, and the amount of ink applied is 4 g/cm ² .

In the step C, the hot stamping temperature is 80°C, the hot stamping speed is 5000PC/H, the pressing time is 0.3s, and the pressing pressure is 0.3Kg/cm ² .

In the step A, the high temperature resistant glue is epoxy resin high temperature resistant glue, and the epoxy resin high temperature resistant glue includes the following raw materials in parts by weight:

High temperature resistant epoxy resin 60 parts

High temperature resistant curing agent 10 parts

Anti-oxidant 5 parts

Toughener 5 parts

Filling 10 parts

15 parts of solvent.

The high temperature resistant epoxy resin is a JEh-022 type high temperature resistant epoxy resin with a viscosity of 10000mPa·s and an epoxy value of 0.60mol/100g; the high temperature resistant curing agent is composed of methyl tetrahydrophthalic anhydride, dodecene The mixture of base succinic anhydride and 2-ethyl-4-methylimidazole in a weight ratio of 2.4:2.5:1; the curing condition of the high temperature resistant curing agent is curing reaction at 80°C for 3.5h, and then at 150 Curing reaction at ℃ temperature for 6.5h.

The structural formula of the anti-thermal oxygen agent is as follows:

;

Wherein, R ₁ is a tert-butyl group, and R ₂ is a methyl group;

The toughening agent is a mixture of acrylonitrile-butadiene-styrene copolymer, ethylene-vinyl acetate copolymer and acrylate polymer in a weight ratio of 2.2:3.5:1; the filler is composed of A mixture of light calcium carbonate, talc, silicon dioxide and barium sulfate in a weight ratio of 2.4:1:1.2:1.5.

An electroless aluminum hot stamping product is prepared according to the above electroless aluminum hot stamping process.

Example 2

The difference between this embodiment and above-mentioned embodiment 1 is:

An electroless aluminum bronzing process, comprising the steps of:

A. Preparation of combined version: use high temperature resistant glue to bond hot stamping version 1 and laser nickel version 2 engraved with graphic information 21 with registration to make a combined version;

B. Paper coating: apply thermoplastic varnish or high-reflective paint to the position of the paper 3 that needs to be bronzed to obtain the coating layer 31;

C. Coating bronzing: the combined plate prepared in step A is loaded on the machine, and the coated layer 31 prepared in step B is pressed and bronzed to obtain an electroless aluminum bronzing product.

As shown in the accompanying drawings 1-2, the middle part of the hot stamping plate 1 is provided with a boss 11, and the graphic information 21 of the laser nickel plate 2 corresponds to the boss 11 of the hot stamping plate 1, and they are aligned and bonded together.

In the step A, it is specifically: use the optical offset plate to carry out a replica to prepare the laser nickel plate 2, and perform surface polishing treatment on the boss 11 of the bronzing plate 1, and then use high temperature resistant glue to register the laser nickel plate 2 and the bronzing plate 1 fit.

As shown in Figures 1-2, the thickness of the laser nickel plate 2 is 30 μm, and the height of the boss 11 is 1.5 mm.

In the step B, the coating method is offset coating, and the amount of ink applied is 8 g/cm ² .

In the step C, the hot stamping temperature is 100°C, the hot stamping speed is 4000PC/H, the pressing time is 0.25s, and the pressing pressure is 0.4Kg/cm ² .

In the step A, the high temperature resistant glue is epoxy resin high temperature resistant glue, and the epoxy resin high temperature resistant glue includes the following raw materials in parts by weight:

High temperature resistant epoxy resin 65 parts

High temperature resistant curing agent 12 parts

Anti-oxidant 6 parts

Toughener 6 parts

Filling 12 parts

18 parts of solvent.

The high temperature resistant epoxy resin is a JEh-022 type high temperature resistant epoxy resin with a viscosity of 11000mPa·s and an epoxy value of 0.61mol/100g; the high temperature resistant curing agent is composed of methyl tetrahydrophthalic anhydride, dodecene The mixture of base succinic anhydride and 2-ethyl-4-methylimidazole in a weight ratio of 2.6:2.3:1; the curing condition of the high temperature resistant curing agent is curing reaction at 85°C for 3.2h, and then at 155°C Curing reaction at ℃ temperature for 6.3h.

The structural formula of the anti-thermal oxygen agent is as follows:

;

Wherein, R ₁ is a tert-butyl group, and R ₂ is a methylene group;

The toughening agent is a mixture of acrylonitrile-butadiene-styrene copolymer, ethylene-vinyl acetate copolymer and acrylate polymer in a weight ratio of 2:3.2:1; the filler is composed of A mixture of light calcium carbonate, talc, silicon dioxide and barium sulfate in a weight ratio of 2.6:1:1.1:1.8.

An electroless aluminum hot stamping product is prepared according to the above electroless aluminum hot stamping process.

Example 3

The difference between this embodiment and above-mentioned embodiment 1 is:

A. Preparation of combined version: use high temperature resistant glue to bond hot stamping version 1 and laser nickel version 2 engraved with graphic information 21 with registration to make a combined version;

B. Paper coating: apply thermoplastic varnish or high-reflective paint to the position of the paper 3 that needs to be bronzed to obtain the coating layer 31;

C. Coating bronzing: the combined plate prepared in step A is loaded on the machine, and the coated layer 31 prepared in step B is pressed and bronzed to obtain an electroless aluminum bronzing product.

As shown in the accompanying drawings 1-2, the middle part of the hot stamping plate 1 is provided with a boss 11, and the graphic information 21 of the laser nickel plate 2 corresponds to the boss 11 of the hot stamping plate 1, and they are aligned and bonded together.

In the step A, it is specifically: use the optical offset plate to carry out a replica to prepare the laser nickel plate 2, and perform surface polishing treatment on the boss 11 of the bronzing plate 1, and then use high temperature resistant glue to register the laser nickel plate 2 and the bronzing plate 1 fit.

As shown in accompanying drawings 1-2, the thickness of the laser nickel plate 2 is 50 μm, and the height of the boss 11 is 2 mm.

In the step B, the coating method is gravure coating, and the amount of ink applied is 12 g/cm ² .

In the step C, the hot stamping temperature is 120°C, the hot stamping speed is 3000PC/H, the pressing time is 0.2s, and the pressing pressure is 0.4Kg/cm ² .

In the step A, the high temperature resistant glue is epoxy resin high temperature resistant glue, and the epoxy resin high temperature resistant glue includes the following raw materials in parts by weight:

High temperature resistant epoxy resin 70 parts

High temperature resistant curing agent 13 parts

Anti-oxidant 8 parts

Toughener 8 parts

Filling 15 parts

20 parts of solvent.

The high temperature resistant epoxy resin is a JEh-022 type high temperature resistant epoxy resin with a viscosity of 12000mPa·s and an epoxy value of 0.62mol/100g; the high temperature resistant curing agent is composed of methyltetrahydrophthalic anhydride, dodecene The mixture of base succinic anhydride and 2-ethyl-4-methylimidazole in a weight ratio of 2.8:2:1; the curing conditions of the high temperature resistant curing agent are curing reaction at 90°C for 3h, and then at 160°C Curing reaction at high temperature for 6h.

The structural formula of the anti-thermal oxygen agent is as follows:

;

Wherein, R ₁ is a tert-butyl group, and R ₂ is a methyl group;

The toughening agent is a mixture of acrylonitrile-butadiene-styrene copolymer, ethylene-vinyl acetate copolymer and acrylate polymer in a weight ratio of 1.8:3:1; the filler is composed of A mixture of light calcium carbonate, talc, silicon dioxide and barium sulfate in a weight ratio of 2.8:1:1.0:2.0.

An electroless aluminum hot stamping product is prepared according to the above electroless aluminum hot stamping process.

Example 4

The difference between this embodiment and above-mentioned embodiment 1 is:

An electroless aluminum bronzing process, comprising the steps of:

A. Preparation of combined version: use high temperature resistant glue to bond hot stamping version 1 and laser nickel version 2 engraved with graphic information 21 with registration to make a combined version;

B. Paper coating: apply thermoplastic varnish or high-reflective paint to the position of the paper 3 that needs to be bronzed to obtain the coating layer 31;

C. Coating bronzing: the combined plate prepared in step A is loaded on the machine, and the coated layer 31 prepared in step B is pressed and bronzed to obtain an electroless aluminum bronzing product.

As shown in the accompanying drawings 1-2, the middle part of the hot stamping plate 1 is provided with a boss 11, and the graphic information 21 of the laser nickel plate 2 corresponds to the boss 11 of the hot stamping plate 1, and they are aligned and bonded together.

In the step A, it is specifically: use the optical offset plate to carry out a replica to prepare the laser nickel plate 2, and perform surface polishing treatment on the boss 11 of the bronzing plate 1, and then use high temperature resistant glue to register the laser nickel plate 2 and the bronzing plate 1 fit.

As shown in Figures 1-2, the thickness of the laser nickel plate 2 is 70 μm, and the height of the boss 11 is 2.5 mm.

In the step B, the coating method is silk screen coating, and the amount of ink applied is 16 g/cm ² .

In the step C, the hot stamping temperature is 130°C, the hot stamping speed is 2000PC/H, the pressing time is 0.15s, and the pressing pressure is 0.5Kg/cm ² .

In the step A, the high temperature resistant glue is epoxy resin high temperature resistant glue, and the epoxy resin high temperature resistant glue includes the following raw materials in parts by weight:

High temperature resistant epoxy resin 75 parts

High temperature resistant curing agent 14 parts

Anti-oxidant 9 parts

Toughener 9 parts

Filling 18 parts

23 parts of solvent.

The high temperature resistant epoxy resin is a JEh-022 type high temperature resistant epoxy resin with a viscosity of 13000mPa·s and an epoxy value of 0.63mol/100g; the high temperature resistant curing agent is composed of methyltetrahydrophthalic anhydride, dodecene The mixture of base succinic anhydride and 2-ethyl-4-methylimidazole in a weight ratio of 3:1.8:1; the curing condition of the high temperature resistant curing agent is curing reaction at 95°C for 2.8h, and then at 165°C Curing reaction at ℃ temperature for 5.8h.

The structural formula of the anti-thermal oxygen agent is as follows:

;

Wherein, R ₁ is tert-butyl, R ₂ is sulfur;

The toughening agent is a mixture of acrylonitrile-butadiene-styrene copolymer, ethylene-vinyl acetate copolymer and acrylate polymer in a weight ratio of 1.6:2.8:1; the filler is composed of A mixture of light calcium carbonate, talc, silicon dioxide and barium sulfate in a weight ratio of 3.0:1:0.9:2.3.

An electroless aluminum hot stamping product is prepared according to the above electroless aluminum hot stamping process.

Example 5

The difference between this embodiment and above-mentioned embodiment 1 is:

A. Preparation of combined version: use high temperature resistant glue to bond hot stamping version 1 and laser nickel version 2 engraved with graphic information 21 with registration to make a combined version;

B. Paper coating: apply thermoplastic varnish or high-reflective paint to the position of the paper 3 that needs to be bronzed to obtain the coating layer 31;

C. Coating bronzing: the combined plate prepared in step A is loaded on the machine, and the coated layer 31 prepared in step B is pressed and bronzed to obtain an electroless aluminum bronzing product.

As shown in the accompanying drawings 1-2, the middle part of the hot stamping plate 1 is provided with a boss 11, and the graphic information 21 of the laser nickel plate 2 corresponds to the boss 11 of the hot stamping plate 1, and they are aligned and bonded together.

In the step A, it is specifically: use the optical offset plate to carry out a replica to prepare the laser nickel plate 2, and perform surface polishing treatment on the boss 11 of the bronzing plate 1, and then use high temperature resistant glue to register the laser nickel plate 2 and the bronzing plate 1 fit.

As shown in Figures 1-2, the thickness of the laser nickel plate 2 is 100 μm, and the height of the boss 11 is 3 mm.

In the step B, the coating method is silk screen coating, and the amount of ink applied is 20 g/cm ² .

In the step C, the stamping temperature is 140°C, the stamping speed is 1000PC/H, the pressing time is 0.1s, and the pressing pressure is 0.6Kg/cm ² .

In the step A, the high temperature resistant glue is epoxy resin high temperature resistant glue, and the epoxy resin high temperature resistant glue includes the following raw materials in parts by weight:

High temperature resistant epoxy resin 80 parts

High temperature resistant curing agent 15 parts

Anti-oxidant 10 parts

Toughener 10 parts

Filling 20 parts

25 parts of solvent.

The high temperature resistant epoxy resin is a JEh-022 type high temperature resistant epoxy resin with a viscosity of 15000mPa·s and an epoxy value of 0.65mol/100g; the high temperature resistant curing agent is composed of methyltetrahydrophthalic anhydride, dodecene The mixture of base succinic anhydride and 2-ethyl-4-methylimidazole in a weight ratio of 3.2:1.5:1; the curing condition of the high temperature resistant curing agent is to cure the reaction at 100°C for 2.5h, and then at 170 Curing reaction at ℃ temperature for 5.5h.

The structural formula of the anti-thermal oxygen agent is as follows:

;

Wherein, R ₁ is tert-butyl, R ₂ is sulfur;

The toughening agent is a mixture of acrylonitrile-butadiene-styrene copolymer, ethylene-vinyl acetate copolymer and acrylate polymer in a weight ratio of 1.4:2.5:1; the filler is composed of A mixture of light calcium carbonate, talc, silicon dioxide and barium sulfate in a weight ratio of 3.2:1:0.8:2.5.

An electroless aluminum hot stamping product is prepared according to the above electroless aluminum hot stamping process.

The above-mentioned embodiments are preferred implementation solutions of the present invention. In addition, the present invention can also be realized in other ways, and any obvious replacements are within the protection scope of the present invention without departing from the concept of the present invention.

Claims (10)

1. one kind is without electrochemical aluminium gold-stamped technique, it is characterised in that：Comprise the following steps：

A, preparation combination version：Gold stamping version is fitted with being carved with the laser nickel version of graph text information with alignment with high-temperature plastic, is made Combine version；

B, Paper Coating：Thermoplasticity gloss oil or high reflective coatings are needed into gold stamping position to paper, coating layer is made；

C, coating are gold stamping：Version will be combined made from step A to carry out locing up upper machine, and coating layer made from step B is pressed, It is gold stamping, it is made without electrochemical aluminium gold-stamped product.

2. one kind according to claim 1 is without electrochemical aluminium gold-stamped technique, it is characterised in that：The middle part of the gold stamping version is provided with Boss, the graph text information position of laser nickel version is corresponding with the boss of gold stamping version, and alignment is fitted.

3. one kind according to claim 2 is without electrochemical aluminium gold-stamped technique, it is characterised in that：In the step A, it is specially： Reprint is carried out using optical cement version and prepares laser nickel version, and surface polishing is carried out to the boss of gold stamping version, then uses high-temperature plastic Laser nickel version is fitted with gold stamping version alignment.

4. one kind according to claim 2 is without electrochemical aluminium gold-stamped technique, it is characterised in that：The thickness of laser nickel version is 10-100 μm, the boss height is 1-3mm.

5. one kind according to claim 1 is without electrochemical aluminium gold-stamped technique, it is characterised in that：In the step B, the coating Mode is any of offset printing coating, gravure coating or silk-screen coating, and the inking amount of coating is 4-20g/cm²。

6. one kind according to claim 1 is without electrochemical aluminium gold-stamped technique, it is characterised in that：In the step C, gold stamping temperature Spend for 80-140 DEG C, gold stamping speed is 1000-5000PC/H, and the time of pressing is 0.1-0.3s, and the pressure of pressing is 0.3- 0.6Kg/cm²。

7. one kind according to claim 1 is without electrochemical aluminium gold-stamped technique, it is characterised in that：In the step A, high-temperature plastic For epoxy resin high-temperature plastic, epoxy resin high-temperature plastic includes following raw material：

60-80 parts of high-temperature-resistant epoxy resin

10-15 parts of high temperature resistant curing agent

5-10 parts of heat resistanceheat resistant oxygen agent

5-10 parts of toughener

10-20 parts of filler

15-25 parts of solvent.

8. one kind according to claim 7 is without electrochemical aluminium gold-stamped technique, it is characterised in that：The high-temperature-resistant epoxy resin is Viscosity 10000-15000mPas, epoxide number 0.60-0.65mol/100g JEh-022 type high-temperature-resistant epoxy resins；Institute State high temperature resistant curing agent be by methyl tetrahydro phthalic anhydride, dodecenylsuccinic anhydride and 2-ethyl-4-methylimidazole using weight ratio as 2.4-3.2:1.5-2.5:The mixture of 1 composition；The condition of cure of the high temperature resistant curing agent is solid at a temperature of 80-100 DEG C Change reaction 2.5-3.5h, then the curing reaction 5.5-6.5h at a temperature of 150-170 DEG C.

9. one kind according to claim 7 is without electrochemical aluminium gold-stamped technique, it is characterised in that：The structural formula of the heat resistanceheat resistant oxygen agent It is as follows：

, or；

Wherein, R₁For the tert-butyl group, R₂For methyl, methylene or sulphur；

The toughener is by acrylonitrile-butadiene-styrene copolymer, ethylene-vinyl acetate copolymer and acrylate Compound birds of the same feather flock together using weight ratio as 1.4-2.2:2.5-3.5：The mixture of 1 composition；The filler is by precipitated calcium carbonate, talcum Powder, silica and barium sulfate compare 2.4-3.2 with weight:1:0.8-1.2：1.5-2.5 the mixture of composition.

10. one kind is without electrochemical aluminium gold-stamped product, it is characterised in that：It is described to be appointed without electrochemical aluminium gold-stamped product according to claim 1-9 Being made without electrochemical aluminium gold-stamped technique described in one.