Phenomenon: The cured coating does not have a mirror surface.
Cause 1: The viscosity is too high and the leveling property is poor for several days before UV light.
Solution: Reduce the viscosity of UV Varnish and add a small amount of leveling agent.
Reason 2: The coating roller is too rough to be smooth.
Solution: The roller surface of the coating roller should be ground and polished.
Printing and coating roller should have the following characteristics:
(1) Rubber hardness between 50 and 60, with good resilience;
(2) Good ink transfer and ink performance;
(3) Has a certain degree of wear resistance.
Reason 3: The pressure is too small and uneven <br> Solution: Adjust the pressure.
Cause 4: Excessive coating weight.
Solution: Reduce the amount of coating.
Reason 5: The UV coating is not cured and is pressed by another guide roller and anti-adhesion.
Solution: (1) Clean.
(2) Identify the cause of the unfixed n.
Reason 6: As the temperature is low, the varnish is relatively easy to solidify, which is not conducive to the normal flow of varnish, resulting in uneven oil film on the surface of the varnished product.
Solution: Under normal circumstances, the temperature of the glazing of the printing product can be controlled at about 20 to obtain a more ideal result.
When using varnishes:
(1) Understand the types, properties, effects, and changes in the formulation of other coating solvents.
(2) Select suitable properties for the substrate and ink surface properties of the substrate.
(3) Pay attention to the drying performance of coating oil, and whether the drying temperature range and drying time are affected by the substrate.
(4) Consider the post-processing adaptability of glazing materials, such as hot stamping performance, durable friction, and pressure resistance when die-cutting marks are cut.
(5) Use transparent, low-odor polishes.
Cause 1: The viscosity is too high and the leveling property is poor for several days before UV light.
Solution: Reduce the viscosity of UV Varnish and add a small amount of leveling agent.
Reason 2: The coating roller is too rough to be smooth.
Solution: The roller surface of the coating roller should be ground and polished.
Printing and coating roller should have the following characteristics:
(1) Rubber hardness between 50 and 60, with good resilience;
(2) Good ink transfer and ink performance;
(3) Has a certain degree of wear resistance.
Reason 3: The pressure is too small and uneven <br> Solution: Adjust the pressure.
Cause 4: Excessive coating weight.
Solution: Reduce the amount of coating.
Reason 5: The UV coating is not cured and is pressed by another guide roller and anti-adhesion.
Solution: (1) Clean.
(2) Identify the cause of the unfixed n.
Reason 6: As the temperature is low, the varnish is relatively easy to solidify, which is not conducive to the normal flow of varnish, resulting in uneven oil film on the surface of the varnished product.
Solution: Under normal circumstances, the temperature of the glazing of the printing product can be controlled at about 20 to obtain a more ideal result.
When using varnishes:
(1) Understand the types, properties, effects, and changes in the formulation of other coating solvents.
(2) Select suitable properties for the substrate and ink surface properties of the substrate.
(3) Pay attention to the drying performance of coating oil, and whether the drying temperature range and drying time are affected by the substrate.
(4) Consider the post-processing adaptability of glazing materials, such as hot stamping performance, durable friction, and pressure resistance when die-cutting marks are cut.
(5) Use transparent, low-odor polishes.
The pneumatic Standing Desk is a simplification of the automatic lifting table. It eliminates the need for a motor or compressor, and adjusts the air pressure bar manually to achieve the function of lifting
advantage:1. Low price and high cost performance 2. No need to connect to electricity, no oil, good safety.
Disadvantages:1. The stability is not high 2. It takes a little effort to raise and lower, and some buttons need to be lifted by hand to achieve the purpose of up and down.
Pneumatic Standing Desk,Adjustable Office Desk,Standing Computer Desk,Office Desk Adjustable Table,Lifting Desk Pneumatic
Suzhou Uplift Intelligent Technology Co., Ltd , https://www.upliftecdesk.com