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Technical Support

Common Printing Problem

Screen printing and drying procedures Frequently Asked Questions

problem Possible Cause Suggested Resolution
1, the ink drying caused by bad screen printing.

A. printing room temperature too high.

B. In the printing position air blowing.

C. purports inks dry more slowly and joined inappropriate solvents or diluents.

A. Make sure the oven do not means in the vicinity of the printing position.

B. Change the screen printing machine installation location.

C. Use appropriate slow thinner.

2, coating printed material printed on poor adhesion.

A. India is not completely clean.
B. improper ink curing process.

A. use of chemical or mechanical abrasion method to thoroughly clean the printing surface.

B. Use proper drying temperature and curing time ink manufacturer provided by the manufacturer.

3, in the printing surface of a beam of pinholes.

A. mesh or receive a printed surface contamination of silicon grease.

B. ink receiving contaminated silicone oil.

C. ink viscosity is too thin or inappropriate diluent.

A. thoroughly clean the mesh and the printing surface.

B. to trace and eliminate the source of contamination.

C. diluted ink ink according to manufacturer's suggested method.

4, after the printing ink lined unclear or thicker.

A. excess diluted ink.

B. Using the wrong ink.

C. Use not when the mesh and the film version.

D. uneven coating net.

A. turn reduce the weight of the diluent.

B. Fine with suitable inks are lined.

C. Use high mesh polyester mesh or steel mesh.

D. reduce overlying network pressure.

5, omissions, gaps or dry spots appear in the press.

A. ink is not completely filled in all the location layout.

B. ink viscosity is incorrect or not when diluted.

C. the ink has dried on the Internet.

A. Use a harder squeegee.

B. Use the squeegee to print variable angle.

C. prior to printing ink to completely cover net once.

D. diluted ink ink according to manufacturer's suggested method.

E. with a slow-drying ink is slow drying solvent.

6, layout adhered mesh.

A. Excessive scraping ink printed on the page.

B. ink drying on wire-line.

A. Use a higher net mesh cloth.

B. Use a harder squeegee.

C. increase the distance between the mesh and prints.

D. Use slow-drying ink is slow drying solvent.

FAQ printed polyvinyl chloride (PVC) and polycarbonate leaflet

problem Possible Cause Suggested Resolution
1, the ink adhesion poor prints

A. could not determine the type of plastic, or improper use of ink.

B. printed surface contaminated.

C. contaminated ink.

A. check with the manufacturer.

B. Ensure clean prints.

C. to switch to another ink tank, such as the results of the same, contact the manufacturer.

2, anti-scratch weak.

A. failed ink drying, the solvent remaining in the ink coating.

B. improper use of ink.

A. The ink coating fully dry.

B. inquiry manufacturer, use another type of ink.

3, when multiple print overprint, poor adhesion between the ink coating and toughness.

A. Ink not suitable for many printing.

B. different ink, printed on different types of ink, but incompatible between inks.

A. Query manufacturer, choose the appropriate ink.

B. Use the manufacturer recommended ink.

FAQ printed polyethylene and polypropylene containers

problem Possible Cause Suggested Resolution
1, the ink adhesion poor prints

A. printed surface mishandled.

B. printed surface contaminated or contain a high content of silicon.

C. Improper use ink.

A. referring to the manufacturer's recommendations (optional flame dedicated processor).

B. Query manufacturers have selected suitable ink system, if possible, change the printed piece of material.

C. for different types of prints, using the respective suitable ink.

2, anti-scratch and anti-scratch in force poor

A. improper ink drying or curing.

B. resistant ink resistance does complex requirements.

A. When the high-speed printing, in particular ink drying or curing (two-component type) manufacturers will need to use the proposed method.

B. switch to another type of ink, query manufacturers.

3, in the multi-color overprint ink toughness poor grades. A. After the first layer of color printing to produce hard due to excessive curing ink film.

A. In the overlay the production process, color printing as long as the ground floor is dry to the touch, can be carried out the next printing process.

B. The method according to the manufacturer's recommendation to cure the ink.

4, poor resistance resistant products.

A. improper use of ink.

B. ink is not completely dry.

A. switch to another type of ink, consult the manufacturer.

B. Method according to manufacturer's recommendations.

FAQ printed plexiglass and polystyrene

problem Possible Cause Suggested Resolution
1, the ink on the printed piece poor adhesion.

A. printed surface contaminated, there may be the presence of additives such as silicone oil.

B. improper use of ink.

C. Without proper adhesion of the ink on the spray paint.

A. Before printing the print surface clean.

B. referring to the manufacturer's recommendations: to switch to another type of paint coating, or switch to another type suitable ink.

2, after printing, prints appear hair-like cracks.

A. aggressive solvents contained in the ink will be printed piece erosion damage.

B. improper ink drying, solvent retention and erosion in the ink prints.

A. Use the ink contains less aggressive solvents.

B. fully dry ink, the ink in the solvent evaporation hair out.

3, anti-alcohol resistance difference.

A. Ink performance does not meet the requirements.

B. ink is not completely dry.

A. Query manufacturer's recommendations, according to the manufacturer's recommendation methods.

B. operate according to the drying method recommended by the manufacturer.

4, the ink in the mold damage.

A. Plastic temperature.

B. ink is not suitable for use as a plastic film.

A. If possible, the temperature of the plastic film when reduced.

B. using suitable ink.

Frequently Asked Questions metal surface when printing

problem Possible Cause Suggested Resolution
1, the ink on the printed piece poor adhesion.

A. ink curing deficiencies.

B. Because the silicon content of the primer paint is too high, which affects the ink adhesion.

C. Improper use ink.

D. prints have received contaminated surface fat or oil.

A. Ink not fully cured hard very volatile broken and out of prints. Please refer to the manufacturer's ink curing procedures.

B. If possible please use another type of primer.

C. Use the appropriate alternative ink.

D. Ensure before printing, printed surface is completely clean.

2, poor flexibility, ink film when printed pieces by stamping becomes broken.

A. ink is not in a stamping operation.

B. Incorrect fixed and other procedures, the baking time is too long, so that the ink film becomes brittle and too hard.

A. selection of ink suitable for this purpose.

B. referring to the correct curing temperature and time provided by the manufacturer.