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Cosmetics packaging materials of water transfer printing process
by：Lisson
2020-11-18
When the cosmetics packaging products after molding, the surface treatment, is the need for graphic printing, thus the enterprise product information and brand to convey information through graphic printing way.
Common graphic printing a variety of, here we mainly introduce several common cosmetics packaging industry processes, such as screen printing, pad printing, thermal transfer, hot stamping, water transfer printing technology.
In this paper, we briefly cosmetics packaging materials under water transfer printing process:
a, water not only process the
1, film activation: only the transfer printing film tile in the water transfer printing surface sink, graphic layer up, keep the water in the tank cleaning, and basic is in the neutral position, with activator in graphic surface evenly spray, make the graphic layer activation, easy to carrier and membrane separation. Activator is a predominantly aromatic hydrocarbon organic mixed solvent, can dissolve quickly and polyvinyl alcohol, but will not damage the graphic layer, make the graphic in the free state.
2, only the water transfer printing process: the items will need to be water transfer printing, along its outline gradually close to the water transfer printing film, graphic layer will be gradually transferred to the product surface under the action of water pressure, because the ink layer and substrate or inherent adhesion effect produced by special coating adhesion. Water transfer printing process, substrates and wearing effect of the joint to keep uniform speed, avoid film wrinkles and make the graphic not beautiful. In principle, should guarantee the graphic of the proper stretching, try to avoid overlap, especially junction, overlap is overmuch, can give a person the sense with clutter. The more complex the product requirement for operating the higher.
water temperature are important parameters affecting the quality of heat transfer, the water temperature is too low, could make the base material film solubility decrease; Water temperature is too high and easy to graphic damage, caused by the deformation. Transfer tank automatic temperature control device can be used to control the water temperature stable range. For large workpiece shape is simple, uniform, can also be used for water transfer printing equipment instead of manual operation, such as cylinder workpiece, it can be fixed on the rotating shaft, rotation and make the graphic layer in thin film surface heat transfer.
2, the water transfer process
1, the preparation process: first, will need to transfer by water transfer printing paper cut into the specifications of the need, in a clean water tank, for 20 seconds, make face film separated from base material, prepare for transfer printing.
2, the water transfer paper processing: close to the surface of substrates, gently remove the water transfer printing paper with scraper scrape by surface, make the moisture extrusion, keep graphic tile in the specified location, natural drying. For stripping water transfer paper, natural drying and then into the oven drying, in order to improve the adhesion of the graphic fastness, drying temperature - in 65 100 degrees. Because to shed water standard transfer paper by surface with a layer of protection of light oil, do not need to be sprayed protection. But water soluble the transfer paper by surface protective layer, after natural drying need spray light oil processing, spraying, UV light oil curing with curing. Spray light oil must pay attention to prevent dirt on surface, otherwise the product appearance will be affected by a lot of. Coating thickness is controlled by adjusting the amount of light oil viscosity and spray, spray too much easy to cause the loss of uniformity. To transfer the substrates with larger area, using screen printing to glazing, thicker coating can be obtained, is also very effective protection measures.
water transfer printing technology, special in the cosmetics packaging industry application is also more, mainly applied to outside surface of the product components, such as lipstick tube, pump head, bottle caps, air box, etc.
a, water not only process the
1, film activation: only the transfer printing film tile in the water transfer printing surface sink, graphic layer up, keep the water in the tank cleaning, and basic is in the neutral position, with activator in graphic surface evenly spray, make the graphic layer activation, easy to carrier and membrane separation. Activator is a predominantly aromatic hydrocarbon organic mixed solvent, can dissolve quickly and polyvinyl alcohol, but will not damage the graphic layer, make the graphic in the free state.
2, only the water transfer printing process: the items will need to be water transfer printing, along its outline gradually close to the water transfer printing film, graphic layer will be gradually transferred to the product surface under the action of water pressure, because the ink layer and substrate or inherent adhesion effect produced by special coating adhesion. Water transfer printing process, substrates and wearing effect of the joint to keep uniform speed, avoid film wrinkles and make the graphic not beautiful. In principle, should guarantee the graphic of the proper stretching, try to avoid overlap, especially junction, overlap is overmuch, can give a person the sense with clutter. The more complex the product requirement for operating the higher.
water temperature are important parameters affecting the quality of heat transfer, the water temperature is too low, could make the base material film solubility decrease; Water temperature is too high and easy to graphic damage, caused by the deformation. Transfer tank automatic temperature control device can be used to control the water temperature stable range. For large workpiece shape is simple, uniform, can also be used for water transfer printing equipment instead of manual operation, such as cylinder workpiece, it can be fixed on the rotating shaft, rotation and make the graphic layer in thin film surface heat transfer.
2, the water transfer process
1, the preparation process: first, will need to transfer by water transfer printing paper cut into the specifications of the need, in a clean water tank, for 20 seconds, make face film separated from base material, prepare for transfer printing.
2, the water transfer paper processing: close to the surface of substrates, gently remove the water transfer printing paper with scraper scrape by surface, make the moisture extrusion, keep graphic tile in the specified location, natural drying. For stripping water transfer paper, natural drying and then into the oven drying, in order to improve the adhesion of the graphic fastness, drying temperature - in 65 100 degrees. Because to shed water standard transfer paper by surface with a layer of protection of light oil, do not need to be sprayed protection. But water soluble the transfer paper by surface protective layer, after natural drying need spray light oil processing, spraying, UV light oil curing with curing. Spray light oil must pay attention to prevent dirt on surface, otherwise the product appearance will be affected by a lot of. Coating thickness is controlled by adjusting the amount of light oil viscosity and spray, spray too much easy to cause the loss of uniformity. To transfer the substrates with larger area, using screen printing to glazing, thicker coating can be obtained, is also very effective protection measures.
water transfer printing technology, special in the cosmetics packaging industry application is also more, mainly applied to outside surface of the product components, such as lipstick tube, pump head, bottle caps, air box, etc.
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