阅读说明：本技术 一种珍珠白铝箔纸生产印刷工艺 (Pearl white aluminum foil paper production printing process ) 是由 王科明 楼依哲 于 2020-08-17 设计创作，主要内容包括：本发明公开了一种珍珠白铝箔纸生产印刷工艺,包括如下步骤：1)在带铝箔的PET薄膜附着上热熔胶；2)将亮铜纸则复合在铝箔上；3)过内置加热器的高温辊子压合,得到铝箔纸；4)将压合好的铝箔纸收卷；5)通过湿法复合机在铝箔纸的铝面上复合金色层,其复合油墨上采用水性涂料和红黄色浆,其复合中采用的胶水为白乳胶；其复合过程采用烘箱进行烘干,所述烘箱包括五个控温区域,其第一区的温度控制在60±10℃,第二区的温度控制在80±10℃,第三区的温度控制在110±10℃,第四区的温度控制在80±10℃,第五区的温度控制在60±10℃。本发明避免了实际墨层表面温度高于预控制的温度,使得铝箔纸印刷后变色,粘结剂表面结皮。(The invention discloses a pearl white aluminum foil production printing process, which comprises the following steps: 1) adhering a hot melt adhesive to the PET film with the aluminum foil; 2) compounding the bright copper paper on the aluminum foil; 3) pressing the paper by a high-temperature roller with a built-in heater to obtain aluminum foil paper; 4) rolling the pressed aluminum foil paper; 5) compounding a golden layer on the aluminum surface of the aluminum foil paper by a wet compounding machine, wherein water-based paint and red-yellow color paste are adopted on the composite ink, and the glue adopted in the compounding is white latex; the drying oven is adopted for drying in the composite process, the drying oven comprises five temperature control areas, the temperature of the first area is controlled to be 60 +/-10 ℃, the temperature of the second area is controlled to be 80 +/-10 ℃, the temperature of the third area is controlled to be 110 +/-10 ℃, the temperature of the fourth area is controlled to be 80 +/-10 ℃, and the temperature of the fifth area is controlled to be 60 +/-10 ℃. The invention avoids the situation that the surface temperature of the actual ink layer is higher than the pre-controlled temperature, so that the aluminum-foil paper is discolored after being printed and the surface of the adhesive is skinned.)

1. A pearl white aluminum foil paper production printing process is characterized by comprising the following steps:

1) adhering a hot melt adhesive to the PET film with the aluminum foil;

2) compounding the bright copper paper on the aluminum foil;

3) pressing the paper by a high-temperature roller with a built-in heater to obtain aluminum foil paper;

4) rolling the pressed aluminum foil paper;

5) compounding a golden layer on the aluminum surface of the aluminum foil paper by a wet compounding machine, wherein water-based paint and red-yellow color paste are adopted on the composite ink, a mixed solvent of alcohol and water is adopted as a diluent, and white latex is adopted as glue in compounding; the drying oven is adopted for drying in the composite process, the drying oven comprises five temperature control areas, the temperature of the first area is controlled to be 60 +/-10 ℃, the temperature of the second area is controlled to be 80 +/-10 ℃, the temperature of the third area is controlled to be 110 +/-10 ℃, the temperature of the fourth area is controlled to be 80 +/-10 ℃, and the temperature of the fifth area is controlled to be 60 +/-10 ℃.

2. The pearl white aluminum foil paper production printing process according to claim 1, wherein the compounding speed in the compounding process in the step 5) is 150 ± 10m/min, and the aluminum foil tension is controlled to be 15 ± 3N.

3. The pearl white aluminum foil paper production printing process according to claim 1, wherein the rolling tension in the compounding process in the step 5) is 25 ± 5N.

4. The pearl white aluminum foil paper production printing process according to claim 3, wherein the unreeling tension in the compounding process in the step 5) is 10 +/-2N.

5. The pearl white aluminum foil paper production printing process according to claim 1, 2, 3 or 4, wherein the wet compounding machine comprises a frame, a glue tank and a temperature control assembly; the frame is provided with a glue transmission roller which is right opposite to the glue tray and a glue spreading roller which is positioned obliquely above the glue transmission roller, and the part of the glue transmission roller extends into the glue tank; the rubber transfer roller is tangent to the rubber coating roller; a pressing roller is arranged right above the glue spreading roller, and a driving roller is further arranged at the upper part of the rack; the heating device is characterized in that a support frame is arranged on one side of the glue spreader, a scraper is arranged at the tail end of the support frame, the scraper comprises a hard cutter holder and a variable cutting part arranged on the hard cutter holder, an installation groove is formed in the variable cutting part, a fixing part made of hot melt adhesive is installed in the installation groove, a hot oil cylinder is arranged on one side, close to the hard cutter holder, of the fixing part, heat conduction oil is communicated with the interior of the hot oil cylinder, an opening extending along the variable cutting part is formed in the top of the hot oil cylinder, a raft used for sealing the hot oil cylinder is arranged in the opening, the hot oil cylinder is provided with a deformation spring made of memory alloy, when the deformation spring is heated to an abnormal temperature, the memory alloy stretches to push the raft to move, a limiting part is arranged on the side wall of the top of the hot; the top of the variable blade part is provided with an expansion film; the expansion film consists of a pair of arc-shaped elastic pieces and a flexible piece, wherein the arc-shaped elastic pieces are connected with the hard tool apron and expand outwards in a natural state;

the temperature control assembly comprises an oil tank filled with heat conducting oil, and an electric heating wire is arranged in the oil tank to adjust the temperature of the heat conducting oil in the oil tank; the oil tank is externally connected with a discharge pipe and a return pipe communicated with the discharge pipe, and the discharge pipe penetrates through the support frame, enters the variable blade part and penetrates through the fixing part to be communicated with the hot oil cylinder; the hot oil cylinder is communicated with a return pipe.

6. The pearl white aluminum foil production printing process according to claim 5, wherein a movable plate is arranged at the bottom of the glue tank, the movable plate divides the glue tank into two independent areas, and a thrust spring is arranged at the bottom of the movable plate.

7. The pearl white aluminum foil production printing process according to claim 6, wherein an oil pump is mounted on the discharge pipe; the area of the discharge pipe, which is located at the rear end of the discharge pipe, is provided with a flow valve.

Technical Field

The invention relates to the field of aluminum foil paper production and printing processes, in particular to a pearl white aluminum foil paper production and printing process.

Background

At present, the unsmooth surface of a coating film is easy to appear when the aluminum foil paper is printed, and the coating film is in a concave-convex state like an orange peel; the reasons for this include: the scraper angle is too low or not suitable; the solid content of the coating is too high or the fluidity and the water retention of the coating are poor; the drying speed is too high. At present, the method is often adopted to adjust by reducing the drying speed, but the penetration, solidification and polymerization of the dried coating on the plain paper and the oxidation of the film are the main forms of drying of the coating. The lower drying speed is adopted, so that the solvent remained in the coating layer can not thicken the coating material quickly, and in turn can prevent the polymerization and oxidation of the coating layer, so that the drying speed is slower, and the composite printing speed is greatly reduced; the ink layer drying process is also an exothermic reaction process, the heat generated by the reaction further promotes the drying of the ink layer, and if the drying temperature is kept unchanged in the later stage of drying, the actual surface temperature of the ink layer is higher than the pre-controlled temperature, so that the aluminum foil paper is discolored after being printed, and the surface of the adhesive is skinned.

Disclosure of Invention

The invention provides a pearl white aluminum foil paper production printing process aiming at the problems, and solves the defects that the existing pearl white aluminum foil paper production printing process still keeps the constant drying temperature in the later stage of drying, so that the surface temperature of an actual ink layer is higher than the pre-controlled temperature, the color of the printed aluminum foil paper is changed, and the surface of an adhesive is skinned.

The technical scheme adopted by the invention is as follows:

a pearl white aluminum foil paper production printing process comprises the following steps:

1) adhering a hot melt adhesive to the PET film with the aluminum foil;

2) compounding the bright copper paper on the aluminum foil;

3) pressing the paper by a high-temperature roller with a built-in heater to obtain aluminum foil paper;

4) rolling the pressed aluminum foil paper;

5) compounding a golden layer on the aluminum surface of the aluminum foil paper by a wet compounding machine, wherein water-based paint and red-yellow color paste are adopted on the composite ink, a mixed solvent of alcohol and water is adopted as a diluent, and white latex is adopted as glue in compounding; the drying oven is adopted for drying in the composite process, the drying oven comprises five temperature control areas, the temperature of the first area is controlled to be 60 +/-10 ℃, the temperature of the second area is controlled to be 80 +/-10 ℃, the temperature of the third area is controlled to be 110 +/-10 ℃, the temperature of the fourth area is controlled to be 80 +/-10 ℃, and the temperature of the fifth area is controlled to be 60 +/-10 ℃.

The ink layer drying process is also an exothermic reaction process, the heat generated by the reaction further promotes the drying of the ink layer, and if the drying temperature is kept unchanged in the later stage of the drying, the actual surface temperature of the ink layer is higher than the pre-controlled temperature, so that the aluminum foil paper is discolored after being printed, and the surface of the adhesive is skinned. According to the invention, by improving the formula of the printing ink and simultaneously adopting five drying ovens with different drying temperatures, a drying mode of gradually heating is adopted, the drying temperature is 80 +/-10 ℃ in the fourth area of the later stage of drying, the temperature of the fifth area is controlled to be 60 +/-10 ℃, and the situation that the surface temperature of an actual ink layer is higher than the pre-controlled temperature is avoided, so that the color of the printed aluminum foil paper is changed, and the surface of the adhesive is skinned. And when the solvent volatilization is near to the end, further and finally, the third area is shaped by adopting a drying temperature slightly higher than that of the first oven and the second oven.

Optionally, the compounding speed in the compounding process in the step 5) is 150 ± 10m/min, and the tension of the aluminum foil is controlled to be 15 ± 3N.

Optionally, the winding tension in the compounding process in the step 5) is 25 ± 5N.

Optionally, the unreeling tension in the compounding process in the step 5) is 10 ± 2N.

Optionally, the wet compounding machine comprises a frame, a glue tank and a temperature control assembly; the frame is provided with a glue transmission roller which is right opposite to the glue tray and a glue spreading roller which is positioned obliquely above the glue transmission roller, and the part of the glue transmission roller extends into the glue tank; the rubber transfer roller is tangent to the rubber coating roller; a pressing roller is arranged right above the glue spreading roller, and a driving roller is further arranged at the upper part of the rack; the heating device is characterized in that a support frame is arranged on one side of the glue spreader, a scraper is arranged at the tail end of the support frame, the scraper comprises a hard cutter holder and a variable cutting part arranged on the hard cutter holder, an installation groove is formed in the variable cutting part, a fixing part made of hot melt adhesive is installed in the installation groove, a hot oil cylinder is arranged on one side, close to the hard cutter holder, of the fixing part, heat conduction oil is communicated with the interior of the hot oil cylinder, an opening extending along the variable cutting part is formed in the top of the hot oil cylinder, a raft used for sealing the hot oil cylinder is arranged in the opening, the hot oil cylinder is provided with a deformation spring made of memory alloy, when the deformation spring is heated to an abnormal temperature, the memory alloy stretches to push the raft to move, a limiting part is arranged on the side wall of the top of the hot; the top of the variable blade part is provided with an expansion film; the expansion film consists of a pair of arc-shaped elastic pieces and a flexible piece, wherein the arc-shaped elastic pieces are connected with the hard tool apron and expand outwards in a natural state;

the temperature control assembly comprises an oil tank filled with heat conducting oil, and an electric heating wire is arranged in the oil tank to adjust the temperature of the heat conducting oil in the oil tank; the oil tank is externally connected with a discharge pipe and a return pipe communicated with the discharge pipe, and the discharge pipe penetrates through the support frame, enters the variable blade part and penetrates through the fixing part to be communicated with the hot oil cylinder; the hot oil cylinder is communicated with a return pipe. Hot oil output from the oil tank enters the discharge pipe and is introduced into the variable blade part, and the hot melt adhesive passes through the fixing part to be heated and made into the fixing part to be melted, so that the elasticity of the variable blade part is increased and the variable blade part is changed into an elastic blade part; the hot melt adhesive has no fixed melting point, and the fluidity of the hot melt adhesive is increased along with the temperature, so that the elasticity of the blade part can be gradually adjusted by controlling the input hot oil cylinder, and meanwhile, the temperature of the blade part is kept in a certain range, and the phenomenon that ink is cooled and adhered to the blade part to block the gap between the blade part and the glue spreader is avoided. Further, can be through increasing the flow or rising heat conduction oil temperature, make it exceed memory alloy's abnormal temperature for memory alloy extends, promotes the raft board and removes, and until supporting the locating part, directly increased the pressure of cutting part like this, make the expansion membrane atress expansion that elastic sheet and telescopic flexible piece are constituteed, make the clearance between cutting part and the glue spreader littleer, and then adjust rubber coating pressure. The surface of filming is unsmooth easily appearing when solving the printing of aluminium foil paper, presents unsmooth state like orange skin, and it can also change the stereoplasm scraper, and this patent application is through the temperature that reduces variable cutting part for the mounting that the hot melt adhesive was made solidifies, improves the hardness of variable cutting part, need not shut down and tear open the scraper of changing.

Optionally, a movable plate is arranged at the middle bottom of the glue tank, the movable plate divides the glue tank into two independent areas, and a thrust spring is arranged at the bottom of the movable plate. The automatic glue feeding device is provided with the movable plate and the reasoning spring, and the liquid level of glue on the movable plate can be automatically adjusted.

Optionally, an oil pump is mounted on the discharge pipe; the area of the discharge pipe, which is located at the rear end of the discharge pipe, is provided with a flow valve.

(III) advantageous effects

1. According to the invention, by improving the formula of the printing ink and simultaneously adopting five drying ovens with different drying temperatures, a drying mode of gradually heating is adopted, the drying temperature is 80 +/-10 ℃ in the fourth area of the later stage of drying, the temperature of the fifth area is controlled to be 60 +/-10 ℃, and the situation that the surface temperature of an actual ink layer is higher than the pre-controlled temperature is avoided, so that the color of the printed aluminum foil paper is changed, and the surface of the adhesive is skinned. And when the solvent volatilization is near to the end, further and finally, the third area is shaped by adopting a drying temperature slightly higher than that of the first oven and the second oven.

2. Hot oil output from the oil tank enters the discharge pipe and is introduced into the variable blade part, and the hot melt adhesive passes through the fixing part to be heated and made into the fixing part to be melted, so that the elasticity of the variable blade part is increased and the variable blade part is changed into an elastic blade part; the hot melt adhesive has no fixed melting point, and the fluidity of the hot melt adhesive is increased along with the temperature, so that the elasticity of the blade part can be gradually adjusted by controlling the input hot oil cylinder, and meanwhile, the temperature of the blade part is kept in a certain range, and the phenomenon that ink is cooled and adhered to the blade part to block the gap between the blade part and the glue spreader is avoided. Further, can be through increasing the flow or rising heat conduction oil temperature, make it exceed memory alloy's abnormal temperature for memory alloy extends, promotes the raft board and removes, and until supporting the locating part, directly increased the pressure of cutting part like this, make the expansion membrane atress expansion that elastic sheet and telescopic flexible piece are constituteed, make the clearance between cutting part and the glue spreader littleer, and then adjust rubber coating pressure. The surface of filming is unsmooth easily appearing when solving the printing of aluminium foil paper, presents unsmooth state like orange skin, and it can also change the stereoplasm scraper, and this patent application is through the temperature that reduces variable cutting part for the mounting that the hot melt adhesive was made solidifies, improves the hardness of variable cutting part, need not shut down and tear open the scraper of changing.

Description of the drawings:

FIG. 1 is a partial cross-sectional view of a wet compounding machine for producing and printing pearl white aluminum foil paper according to example 4 of the present invention;

FIG. 2 is a side view of the doctor blade of FIG. 1 in a pearl white aluminum foil paper production printing process of example 4 of the present invention;

fig. 3 is a cross-sectional view of a doctor blade a-a of fig. 2 of a pearl white aluminum foil paper production printing process according to example 4 of the present invention.

The figures are numbered:

1. the device comprises a rack, 2, a glue tank, 3, a temperature control assembly, 4, a glue transfer roller, 5, a glue coating roller, 6, a pressing roller, 7, a transmission roller, 8, a support frame, 9, a scraper, 10, a hard tool apron, 11, a variable cutting part, 12, a mounting groove, 13, a fixing part, 14, a hot oil cylinder, 15, an electric heating wire, 16, an opening, 17, a raft board, 18, a deformation spring, 19, a limiting part, 20, an expansion film, 21, an elastic sheet, 22, a flexible part, 23, an oil tank, 24, a discharge pipe, 25, a return pipe, 26, a movable plate, 27, a thrust spring, 28, an oil pump, 29 and a flow valve.

The specific implementation mode is as follows:

the present invention will be described in detail below with reference to the accompanying drawings.