Common problem

Cause

Solution

The middle part of the compound bubbles

Add dry oil when brushing

Dry and then recombine

The amount of glue is too small 

Increase glue 

Film or print surface contamination or excessive dusting 

Dedusting 

The overflow on the surface of the rubber roller is not removed, causing the mucous membrane to empty 

Cleaning glue roller

The pressure is too small, and the air in the glue is not completely eliminated during the film

Increase roll

The surface of the film is polluted, and the moisture is not enough when the water-based glue is applied

Film changing

Concave and convex husking

The amount of adhesive film is too small, and the adhesive layer will creep 

Change the glue

The amount of film is too large, the glue becomes brittle, and falls off after impact 

Change the glue

The film cutter has burrs or deep indentation 

Trimming tool

The adhesive layer is not fully cured or the ink is not dry. The recombination time is too close to the indentation 

Extended placement time

The composite has uneven crimp

Excessive film tension, excessive tension during production, post-slitting stress

Tone down 

Retraction

Reverse flat film product

The composite changes color after mounting

Laminating glue is strongly alkaline 

Change the tile glue 

Moisture absorption during mounting leads to chemical reaction discoloration, which leads to falling off in serious cases 

Change the tile glue 

The ink is placed for a long time, and the antioxidants fail 

Get a new ink 

Composite printing gold color 

The copper powder content is too high

Reduce the amount of glue, can not be solved then change the dry film glue 

Copper powder surface treatment is not good 

After compound generally how much time rolling concave and convex is good

Composite fastness, in addition to the glue itself, and paper, printed matter, ink, the degree of dryness of the weather and many other factors, in the summer generally three hours after rolling, and in winter, it takes 12 hours to do, in addition should be determined by the specific situation of the composite.