阅读说明：本技术 一种铝单板水转印贴膜工艺 (Water transfer printing film pasting process for aluminum veneer ) 是由 段承连 于 2019-09-20 设计创作，主要内容包括：本发明涉及水转印贴膜领域,具体是一种铝单板水转印贴膜工艺,包括以下步骤：A、铝单板的备选及表面处理：S1.备选材料：从原材料中挑选无磨损、无断裂和无凹陷的铝单板,挑选出优质的铝单板；S2,浸泡清洗：将优质的铝单板放入水中浸泡,取出用高压水枪进行对铝单板表面进行清洗,直到铝单板表面清洗干净；S3,擦拭和风干：清洗之后把铝单板放入到擦拭箱内,启动擦拭机反复对铝单板表面进行擦拭,之后放入风干箱内。本发明的有益效果采用水转印贴膜,能够使铝单板工产品图案清晰艳丽,附着力强,安全无毒,符合环保安全标准,且生产周期短、耐光、耐磨、耐老化和耐高低温测试,而且能够对各种不规则产品均可自由转印。(The invention relates to the field of water transfer printing film pasting, in particular to an aluminum veneer water transfer printing film pasting process, which comprises the following steps: A. alternative and surface treatment of aluminum veneers: s1, alternative materials: selecting aluminum veneers without abrasion, fracture and depression from raw materials, and selecting high-quality aluminum veneers; s2, soaking and cleaning: soaking a high-quality aluminum veneer in water, taking out, and cleaning the surface of the aluminum veneer by using a high-pressure water gun until the surface of the aluminum veneer is cleaned; s3, wiping and air drying: after cleaning, the aluminum veneer is placed into a wiping box, a wiping machine is started to wipe the surface of the aluminum veneer repeatedly, and then the aluminum veneer is placed into an air drying box. The water transfer printing film has the beneficial effects that the water transfer printing film can enable the pattern of the aluminum single-plate chemical product to be clear and gorgeous, has strong adhesive force, is safe and nontoxic, meets the environmental protection safety standard, has short production period, and can be used for testing light resistance, wear resistance, aging resistance and high and low temperature resistance, and can be used for freely transferring various irregular products.)

1. The water transfer printing film pasting process for the aluminum veneer is characterized by comprising the following steps of:

A. alternative and surface treatment of aluminium veneers

S1, alternative materials: selecting aluminum veneers without abrasion, fracture and depression from raw materials, and selecting high-quality aluminum veneers;

s2, soaking and cleaning: soaking a high-quality aluminum veneer in water, taking out, and cleaning the surface of the aluminum veneer by using a high-pressure water gun until the surface of the aluminum veneer is cleaned;

s3, wiping and air drying: after cleaning, putting the aluminum veneer into a wiping box, starting a wiping machine to repeatedly wipe the surface of the aluminum veneer, then putting the aluminum veneer into an air drying box, and starting an air heater to dry the aluminum veneer to obtain a clean and anhydrous aluminum veneer;

B. and (3) carrying out water transfer printing film pasting preparation while carrying out alternative and surface treatment on the aluminum veneer:

s1, printing pattern: selecting a high-quality polyvinyl alcohol film, printing various patterns on the polyvinyl alcohol film according to the requirements, pressing logic grains on the polyvinyl alcohol film printed with various patterns or irradiating laser film grains to generate grains, and finally spraying a layer of interfacial agent on the surface of the printed patterns;

s2, plating metal luster: putting the polyvinyl alcohol with the lines into a plating box, keeping the temperature of the polyvinyl alcohol at 40-50 ℃, and then carrying out vacuum plating or sputtering to ensure that the lines on the surface of the polyvinyl alcohol film generate metallic luster to obtain a water transfer printing film;

carrying out water transfer printing and film pasting on the aluminum veneer:

s1, juicing, mixing and stirring: the water transfer printing sticking film after vacuum plating or sputtering is prevented from being placed on the water surface, the surface without the printing pattern layer is contacted with the water surface, and the water surface is kept in an overflow state;

s2, dissolving: when the water transfer printing film is not completely dissolved, spraying an activating agent in advance to prolong the activation time of the ink, and then spraying the activating agent to restore the water transfer printing film to a liquid surface;

s3, water transfer film: pressing the aluminum veneer into a liquid surface from top to bottom, selecting a water drainage angle according to the shape or texture of a processed object before film application so as to facilitate air discharge, transferring the pattern to the surface of a product by the pressure of water after the film application, and fishing out the aluminum veneer;

s4, drying: and (3) spraying oil on the transferred aluminum veneer, wherein the drying after oil spraying is the volatile drying of the solvent, spraying oil on the aluminum veneer, placing the aluminum veneer into drying equipment, evaporating water, and naturally cooling at normal temperature to obtain a finished product.

2. The aluminum veneer water transfer printing film pasting process according to claim 1, characterized in that: and step A, in S2, the alternative and surface treatment of the aluminum veneer, the high-quality aluminum veneer is soaked in water for 20-40min, and the high-pressure water gun is used for washing for 1-3 min.

3. The aluminum veneer water transfer printing film pasting process according to claim 1, characterized in that: step A alternative and surface treatment of aluminum veneer in S3, the wiping head of the wiping machine is a non-woven towel, the model of the hot air machine is HAM-G3A-11, and the temperature in the air drying oven is 70-90 ℃.

4. The aluminum veneer water transfer printing film pasting process according to claim 1, characterized in that: in step B, the water transfer adhesive film is prepared in step S1, the polyvinyl alcohol film is adopted, the density is 1.26-1.29g/cm to the third power, the refractive index is 1.52, the ultraviolet rays emit white light after being irradiated, the water absorption is high, the white light can be dissolved after being immersed in water, the water content of the fiber can reach 30% -50%, and the moisture content in the environment with the temperature of 25 ℃ is 4.5% at 65% RH.

5. The aluminum veneer water transfer printing film pasting process according to claim 1, characterized in that: in step B, in step S2, the water transfer adhesive film is kept at a temperature of 25-30 ℃ and a humidity of 65-70% to avoid direct sunlight irradiation.

6. The aluminum veneer water transfer printing film pasting process according to claim 1, characterized in that: step C, in S1, when the water surface is kept in an overflow state, the dissolving time is set by matching with the water temperature, the water temperature is generally not higher than 27-30 ℃, and the dissolving time is 1-2 min.

7. The aluminum veneer water transfer printing film pasting process according to claim 1, characterized in that: step C, in S2, the ink activation time is prolonged, the ink is dissolved for 1-2min, and the film is flatly expanded for 5-10 seconds after being mirror-finished.

8. The aluminum veneer water transfer printing film pasting process according to claim 1, characterized in that: step C Water transfer printing film preparation in S3, after the aluminum veneer is coated, the aluminum veneer should be shaken in water for 2-3 seconds, so as to increase the time for the workpiece to be bitten by the question.

9. The aluminum veneer water transfer printing film pasting process according to claim 1, characterized in that: and step C, in S4, the temperature in the drying box is 100-120 ℃, the pictures and texts form tight bonding force with the product, and the picture and text maintenance layer with high glossiness, compactness and hardness is formed after the gloss oil is dried.

10. The aluminum veneer water transfer printing film pasting process according to claim 1, characterized in that: step C, in S2, the spray coating of the activating agent needs to be operated by a spray gun with 1.2mm 4 holes and stirring pressure, the spray coating distance is about 30cm, the water in the water tank needs to overflow, the last water needs to be cleaned, the water is dried by air after the washing is finished, and the water is trimmed by a quality control and then enters a baking oven.

Technical Field

The invention relates to the field of water transfer printing film pasting, in particular to an aluminum veneer water transfer printing film pasting process.

Background

The aluminum veneer is a building decoration material which is processed and formed by adopting fluorocarbon spraying technology after chromizing and other treatments. The fluorocarbon coating mainly comprises polyvinylidene fluoride resin (KANAR 500), and is divided into three types of priming paint, finishing paint and varnish. The spraying process is generally classified as two, three or four coats. The fluorocarbon coating has excellent corrosion resistance and weather resistance, can resist acid rain, salt mist and various air pollutants, has excellent cold and heat resistance, can resist the irradiation of strong ultraviolet rays, can keep the fastness and the chalking for a long time, has long service life, can only print calligraphy and painting patterns on articles with regular shapes by the conventional printing process, and has two main production processes of the conventional transfer printing film. One is to utilize an electrostatic generator to adsorb the transfer film in a mold, and the transfer film is adhered to the surface of the mold after the mold is injection molded. The process adopts an electrostatic generator, the equipment is complex, and the investment is high; the transfer printing film is pasted in the mould, and the material is required to have higher high temperature resistance, so that the used material is limited; the printing material must be injection molded, so that the variety of the printing material is limited. Another technique is to heat the substrate first and then press the transfer film onto the substrate using a heat transfer head to perform the transfer.

The transfer printing film of the prior art contains a thermosensitive adhesive material, so that the production cost is high; the printing stock needs to be heated in advance, the transfer printing process also needs to be heated, and the process is complicated. The above two processes have the above disadvantages, which limit the use disadvantages of the transfer film, and therefore, there is a need to develop a water transfer lamination process for aluminum veneers.

Disclosure of Invention

The invention aims to provide a water transfer printing film pasting process for an aluminum veneer, which aims to solve the problems that the transfer printing film of the process proposed in the background technology contains a thermosensitive adhesive material and has high production cost; the printing stock needs to be heated in advance, the transfer printing process also needs to be heated, and the process is complicated. The above two processes have many disadvantages, which limit the use of the transfer film.

The technical scheme of the invention is as follows: an aluminum veneer water transfer printing film pasting process comprises the following steps:

A. alternative and surface treatment of aluminium veneers

S1, alternative materials: selecting aluminum veneers without abrasion, fracture and depression from raw materials, and selecting high-quality aluminum veneers;

s2, soaking and cleaning: soaking a high-quality aluminum veneer in water, taking out, and cleaning the surface of the aluminum veneer by using a high-pressure water gun until the surface of the aluminum veneer is cleaned;

s3, wiping and air drying: after cleaning, putting the aluminum veneer into a wiping box, starting a wiping machine to repeatedly wipe the surface of the aluminum veneer, then putting the aluminum veneer into an air drying box, and starting an air heater to dry the aluminum veneer to obtain a clean and anhydrous aluminum veneer;

B. and (3) carrying out water transfer printing film pasting preparation while carrying out alternative and surface treatment on the aluminum veneer:

s1, printing pattern: selecting a high-quality polyvinyl alcohol film, printing various patterns on the polyvinyl alcohol film according to the requirements, pressing logic grains on the polyvinyl alcohol film printed with various patterns or irradiating laser film grains to generate grains, and finally spraying a layer of interfacial agent on the surface of the printed patterns;

s2, plating metal luster: putting the polyvinyl alcohol with the lines into a plating box, keeping the temperature of the polyvinyl alcohol at 40-50 ℃, and then carrying out vacuum plating or sputtering to ensure that the lines on the surface of the polyvinyl alcohol film generate metallic luster to obtain a water transfer printing film;

carrying out water transfer printing and film pasting on the aluminum veneer:

s1, juicing, mixing and stirring: the water transfer printing sticking film after vacuum plating or sputtering is prevented from being placed on the water surface, the surface without the printing pattern layer is contacted with the water surface, and the water surface is kept in an overflow state;

s2, dissolving: when the water transfer printing film is not completely dissolved, spraying an activating agent in advance to prolong the activation time of the ink, and then spraying the activating agent to restore the water transfer printing film to a liquid surface;

s3, water transfer film: pressing the aluminum veneer into a liquid surface from top to bottom, selecting a water drainage angle according to the shape or texture of a processed object before film application so as to facilitate air discharge, transferring the pattern to the surface of a product by the pressure of water after the film application, and fishing out the aluminum veneer;

s4, drying: and (3) spraying oil on the transferred aluminum veneer, wherein the drying after oil spraying is the volatile drying of the solvent, spraying oil on the aluminum veneer, placing the aluminum veneer into drying equipment, evaporating water, and naturally cooling at normal temperature to obtain a finished product.

Further, in step A, in step S2, the high-quality aluminum veneer is soaked in water for 20-40min, and washed with a high-pressure water gun for 1-3 min.

Further, alternative and surface treatment of the aluminum veneer of step A in S3, the wiping head of the wiper was a non-woven towel, HAM-G3A-11, model of a hot air blower, and the air drying oven internal temperature was 70-90 ℃.

Further, in step B, the water transfer film is prepared in step S1 by using a polyvinyl alcohol film with a density of 1.26-1.29g/cm to the third power and a refractive index of 1.52, and after ultraviolet irradiation, the film emits white light, has high water absorption and can be dissolved in water, the water content of the fiber can reach 30% -50%, and the moisture content of the fiber under the environment of 65% RH and 25 ℃ is 4.5%.

Further, in step B, in step S2, the water transfer adhesive film is kept at a temperature of 25-30 ℃ and a humidity of 65-70% to avoid direct irradiation of sunlight.

Further, in step C, the water transfer film is manufactured in S1, when the water surface is kept in an overflow state, the dissolving time is set according to the water temperature, the water temperature is generally not higher than 27-30 ℃, and the dissolving time is 1-2 min.

Further, in step C, the water transfer film is prepared in S2, the ink activation time is prolonged, and the film is dissolved for 1-2min until the film is mirror-surface and spreads flatly for 5-10 seconds.

Further, in step C, in step S3, the aluminum single plate should be shaken in water for 2 to 3 seconds after being coated with the water transfer film, thereby increasing the time required for the workpiece to be gripped.

Further, in step C, the water transfer printing film is manufactured in S4, the temperature in the drying box is 100-120 ℃, the pictures and texts form tight bonding force with the product, and the picture and text maintenance layer with high glossiness, compactness and hardness is formed after the gloss oil is dried.

Further, in step C, in step S2, the spraying of the activator is performed by a 1.2mm 4-hole spray gun and a stirring pressure operation, the spraying distance is about 30cm, the water in the water tank is required to overflow, the last water is required to be clean, the water is required to be dried by air after the washing is completed, and the water is finished by a product pipe and then enters a baking oven.

The invention provides an aluminum veneer water transfer printing film pasting process through improvement, compared with the prior art, the aluminum veneer water transfer printing film pasting process has the following improvement and advantages:

(1) the water transfer printing sticking film can enable the patterns of the aluminum single-plate chemical products to be clear and gorgeous, has strong adhesive force, is safe and nontoxic, accords with the environmental protection safety standard, has short production period, and can be used for testing light resistance, wear resistance, aging resistance and high and low temperature resistance, and can be used for freely transferring various irregular products.

(2) The water transfer printing film is made of the polyvinyl alcohol film, the polyvinyl alcohol film has high tensile strength and good corrosion resistance, the service life of the water transfer printing film can be prolonged, the polyvinyl alcohol film has good water solubility, and can be well dissolved in water, so that the water transfer printing film can be conveniently carried out on the aluminum veneer.

(3) The drying is carried out after the water transfer printing film pasting of the aluminum veneer, the temperature in the drying box is 100-120 ℃, the graph and text can form tight bonding force with the product, and the graph and text maintenance layer with high glossiness and compactness and hardness can be formed after the gloss oil is dried.

Detailed Description

The present invention is described in detail below, and technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.