Analysis of adhesive (rubber) and corrugated board (4-5)

4, there is a large number of bubbles in the adhesive layer, accompanied by a pungent odor

cause:

After a long time, the colloids deteriorated.

Solution:

Add 37% formaldehyde 3-5kg/ton to the adhesive and mix with new glue.

5, bad adhesion

cause:

(1) Face paper force is too large;

(2) The surface paper and core paper have large moisture content;

(3) The corrugating roll and the coating roll are not parallel;

(4) Small adhesive adhesion;

(5) Bad adhesive quality;

(6) The position of the paper guide is not correct or there is dirt;

(7) The glue roller and the floating roller are not parallel;

(8) The canvas belt lifting mechanism is not working properly;

(9) High heat, premature starch coagulation;

(10) Not enough heat for starch gelatinization;

(11) Improper positioning of double-sided machine weight rollers;

(12) The binder forms agglomerates and sizing unevenness.

Solution:

(1) Adjust the brake device to reduce friction;

(2) increase the degree of warm-up or paper adjustment;

(3) Adjust the reasonable interval between the two;

(4) increase the amount of adhesive;

(5) adjust the quality of the adhesive;

(6) Correct the position of the paper guide and clean the dirt;

(7) Adjust the reasonable interval between the two;

(8) Check pressureless devices and mechanical adjustment systems;

(9) Properly reduce warm-up;

(10) Check and eliminate the causes of insufficient heat;

(11) adjustment and weight roller;

(12) Solve the quality of the adhesive agent.