1. Poor adhesion (open glue, fake glue)
The performance is: after the initial adhesion of the cardboard for 5 minutes, under the action of external force, the inside, the surface or the A, B tiles or the sandwich are completely separated, and all the paper fibers are intact, not being napped, and white or colorless paper appears in the adhesive. Strip, no fiber attached.
①The surface paper force is too large ①Adjust the brake device to reduce friction
②The moisture content of the paper core paper is too large. ②Increase the preheating surface or change the paper to reduce the speed
③Small adhesion amount of adhesive ③Increase adhesion amount of adhesive
④The rubber roller and the floating roller are unbalanced ④Adjust the reasonable gap between the two
⑤The sail towel belt lift is not working properly ⑤Check the hydraulic device and mechanical adjustment system
⑥The quality of the adhesive is not good. ⑥ Correct the quality of the adhesive and use a suitable adhesive
⑦Insufficient calories, poor starch gelatinization ⑦Check and eliminate the factors of insufficient calories
⑧The heat is too high, and the starch condenses prematurely. ⑧Appropriately reduce preheating or pressure
⑨The adhesive forms agglomerates, and the glue is uneven. ⑨Resolve the quality of the adhesive
2. Partial degumming
performance: the two-layer bonded part of the paper does not require external force or a slight external force to separate, which is abnormal separation, which is degumming, also called false adhesion and open glue.
①Adhesive quality is not good
②The adhesion amount of adhesive is small.
③The surface temperature of the corrugated roller is unbalanced or the temperature is not enough.
④The temperature of the hot plate of the double-sided machine is not enough.
⑤The moisture content of the base paper is too high.
⑥ The vehicle speed is too fast
①Replace the adhesive or improve the adhesive quality (penetration)
②Adjust the glue amount to increase the adhesion amount
③Check whether the condensate discharge and air supply pressure meet the requirements
④Check whether the air supply part is faulty
⑤Increase warm-up or change paper
⑥ Reduce the vehicle speed appropriately and adjust to a suitable speed
Post time: Jul-01-2021