Discussion On The Reason Of Leather Glue Opening

Causes of A and gum

1: uses the wrong follow up agent, the treatment agent is not suitable for the material. The water can not be treated and the glue can not exert its adhesion.

The addition of 2: hardener is incorrect, adding too little, the glue is activated by heat, added too much, and glue dies too early.

3: surface roughness is not in place.

4: potion is not in place.

5: brush is too thin or too thick, and the amount of glue is not enough. Then it can not reach the proper strength. The brush is too thick and the glue is not dry.

6: oven temperature is too high to cause dead glue.

7: oven temperature goes through the bottom, the glue is dry.

8: press time and pressure are not enough.

9: press the bottom to feel the radian. The camber is not correct. When the bottom is pressed, the bottom can not be fully stressed.

10: material itself problem: because of the particularity of the material and affect the glue.

Causes and prevention of B and glue opening

1. no correct cleaning and handling of shoes or base materials (incorrect gestures).

2 if the vamp is genuine leather, rough or not rough or rough.

3 material properties test (however, there are too many cowhide oils) to select standard physical properties.

4 the wrong adhesive, or no proportion of hardener or hardener. Choose the right treatment agent and add the appropriate hardener proportion.

5 the cleanliness of the vamp or base is not good enough to maintain cleanliness.

6 water-based or oil-based treatment or cleaning or adhesive selection is not different from material, treatment agent is different.

7 press pressure is not enough or time is not enough or machine is not adjusted. Set a reasonable press time and pressure.

8. press machine with non-standard improvement tools

9. big bottom overdue inspection

10 the bottom is too high.