Corrugated board solutions for various common paper diseases

First, open plastic, false sticky

1. Paper open plastic

Reason analysis: 1 The glue quality does not meet the production requirements or spoilage; 2 The glue volume is too small; 3 The corrugating roller and the pressure roller lack heat; 4 The pressure roller pressure is insufficient; The middle and high wear of the 5 watt roller and pressure roller are serious.

The solution: 1 change the qualified glue; 2 the amount of large amount of glue; 3 increase the pressure roller, corrugating roller temperature, to ensure that the temperature above 180cC boot; 4 appropriate pressure roller pressure adjustment, with a good adhesion of tiles, Paper is not preferred; 5 grinding or more damage to the new pressure roller, corrugating roller.

2. Paper open plastic

Analysis of the reasons: 1 The glue amount is too small, the speed of the dryer is too slow; 2 The glue is thin and the glue roller has insufficient glue; 3 The temperature of the hot plate of the dryer is insufficient, the glue is not fully gelatinized; 4 The speed of the drying machine passes Insufficient drying and drying; 5 The ballast roller above the dryer and the conveyor did not completely fall.

Solution: 1 appropriately increase the amount of glue, and increase the speed as appropriate; 2 replace the glue or add the right amount of emulsifier in the original glue; 3 increase the dryer hot plate temperature to 180 ° C above boot; 4 reduce the speed; Drop the ballast roller.

3. Paper false glue

Analysis of causes: 1 The temperature of the corrugating roller is insufficient; 2 The amount of glue is too small and the temperature is too high; 3 The speed of the car is slow, resulting in a gel; 4 The viscosity of the glue is not enough.

Solution: 1 to increase the temperature of the single-sided machine; 2 adjust the amount of glue, turn off the heat source until the temperature drops below 180°C, and turn it on after 160°C; 3 increase the speed of the single-sided machine; 4 increase the viscosity of the glue properly.

4. Face paper false glue

Analysis of the reasons: 1 lack of hot plate dryer temperature; 2 glue precipitation deterioration; 3 cardboard stay in the dryer for too long.

Solution: 1 When the temperature reaches the glue can be energized when the boot; 2 replace the new plastic; 3 reduce the tension of paper without the tension bracket after the tension gate valve after the paper still appears to break, you can replace a good pull paper tube. It is estimated that the resumption time of the paper break may exceed two minutes and the single-sided corrugated cardboard is immediately cut. The paperboard that has been dried in the machine is opened and then fed, reducing the residence time of the paperboard in the dryer.

Second, down

1. Single cardboard

Cause analysis: 1 corrugating roller wear; 2 upper and lower tile roller gap is too large; 3 watt paper weight is too thick; 4 watt paper moisture is too large; 5 watt paper without preheater plasticity is poor.

Solution: 1 Replace the roller or grinding; 2 Adjust the clearance of two watts to 0.5mm; 3 Replace the lining paper;

4 adjust the warm wrapper preheating angle; 5 pass the paper through the preheater.

2. Double Wedges

Cause of square analysis: 1 after the two-sided machine after the plastic smashing, is the gap between the rubber roller and the ballast roller is too small; 2 after the dryer is poured, the floating ballast roller above the conveyor belt can not freely move up and down The pressure corrugated deformation; 3 glue is too large, corrugated paper absorption of a large amount of water in the glue becomes soft, along the direction of operation of the dryer one-sided; 4 watts of paper quality times.

Solution: 1 Adjust the gap between the double-sided machine, the ballast roller and the rubber-coated roller to be slightly smaller than 0.2mm on the single-sided cardboard. The single-sided cardboard can plug people between the ballast roller and the rubber roller. It is better to insert and drive the ballast roll without any deformation; 2 to adjust the free movement of the float roller on the conveyor belt; 3 to reduce the amount of glue applied to evenly distribute the corrugation peak, instead of flowing into the gutter; 4 Replace the paper.

Three, collapse, high and low

1. Collapse

Analysis of the reasons: 1 single-sided machine, corrugated roller is not parallel; 2 corrugated roller serious wear; 3 corrugated roller at both ends of the lack of heat; 4 watt paper power is not enough; 5 watts of both ends of the tension is not uniform; 6 vacuum adsorption board is not closed or The air hole is blocked or there are debris such as dust in the vacuum plate.

Solution: 1 adjust the two-Watt roller to parallel; 2 replace the corrugated roller; 3 adjust the balance of the elevated tile roller temperature; 4 tension tight brake valve; 5 replace the tile; 6 check the vacuum adsorption board closed, replace the seal, Gaskets, tightening screws, cleaning debris such as clogging holes or contaminants in the vacuum plate.

2. High and low

Analysis of reasons: 1 watt paper force is too large; 2 paper plasticity is poor: 3 watts of paper is too thick; 4 vacuum suction is too large.

Solution: 1 appropriate to reduce the tension; 2 according to the amount of paper spray steam or increase the warm-up area; 3 to use a small weight gram paper; 4 to adjust the amount of suction.

Fourth, wrinkle

1. Paper creases

Cause analysis: 1 watt uneven thickness; 2 without input into the corrugator without warm-up; 3 watts at both ends of the brake inconsistent; 4 watts of water imbalance; 5 guide roller is not parallel.

Solution: 1 Replace the paper; 2 Pass the paper through the preheater; 3 Adjust the brake balance of the paper; 4 Increase the preheating area of ​​the paper or replace the paper; 5 Correct the paper guide roller.

2. Wrinkle paper

Analysis of reasons: 1 paper guide rollers are not parallel; 2 dryer paper feed port skew; 3 watt paper water imbalance; 4 watt paper tension at both ends is not balanced.

Solution: 1 correct the paper guide roller; 2 correct the dryer paper inlet; 3 increase the warm-up area of ​​the paper; 4 replace the paper.

3. Corrugated wrinkle

Reasons: The strength, moisture, and thickness of the two ends of the terracotta paper are not uniform and the brakes are insufficient.

Solution: Adjust the warm-up area, tighten the brake valve or flip the paper. If wrinkles still occur, replace the paper.

V. Blistering

1. Paper bubble

Foot; 4 pressure roller wear or not parallel; 5 rubber roller wear local difficulty with rubber or foreign objects caught in the middle of coating roller and adjusting roller; 6-watt roller part of the suction slot is blocked, the guide board wear.

Solution: 1 increase the warm-up area of ​​the corrugated paper; 2 tighten the brake valve; 3 wait until the temperature rises to 180 °C, then re-start the paper; 4 replace the grinding pressure roller or calibrated to parallel; 5 replace the rubber roller, Remove debris between the applicator roller and the metering roller; 6 Clean the corrugation roller suction slot and replace the guide blade.

2. Face paper foaming

Analysis of causes: 1 watt paper moisture imbalance; 2 paper without direct input to the dryer preheater; 3 viscosity of the glue is not enough; 4 between the glue roller and the adjustment roller with paper scraps, plastic blocks; 5 glue The rollers are not parallel or worn.

Solution: 1 Replace the paper; 2 Pass the paper through the preheater and adjust the preheat area appropriately; 3 Increase the viscosity of the glue; 4 Remove the foreign material glue block between the glue roller and the regulating roll; 5 Correct the glue roll or replace.

Sixth, corrugated crusher

1. Single cardboard corrugated crusher

Cause analysis 1 pressure roller pressure is too large; 2 watt paper fiber is short, no toughness, poor quality; 3 upper and lower two watts roll gap is too small; 4 excessive warm-up area, paper severe water loss; 5 watt roll temperature is too high; 6 The high wear of the corrugating roller is serious. After the pressure roller is lifted, the stress of the corrugated paper is unbalanced, causing the pressure at both ends of the single-faced roller to be damaged.

Solution: 1 appropriate to reduce the pressure roller pressure; 2 replacement of tiles; 3 correction corrugated roller gap; 4 reduce the preheat area; 5 reduce the corrugating roller temperature to 160 °C and then boot; 6 replace or grinding corrugated roller.

2. After the double-sided machine broken corrugated

Analysis of the causes: 1 There are burrs on the flyovers or multiple preheater cylinder surfaces to cause mechanical scratches; 2 The transfer belts of the flyover to the single-sided machines are buckled.

Solution: 1 Check that there are burrs that cause the crushing of the corrugated, smooth and smooth with sandpaper or board; 2 Replace the buckle and reconnect.

Seven, pressure line breakage

1. Cracked paper

Reason analysis: 1 paper times, too thin; 2 paper dehydration serious no toughness; 3 pressure line cam angle is not smooth; 4 indentation too deep.

Solution: 1 Replace the paper or adjust the depth of the shallow indentation; 2 paper can not go through the preheater; 3 replace the arc-shaped pressure wheel or polished smooth cam angle; 4 moderately adjust the pressure line depth.

2. Cracked paper

Analysis of reasons: 1 side of the paper quality; 2 indentation line is too deep; 3 indentation concave wheel is too deep and not smooth; 4 pressure line adjustment device failure;

Solution: 1 spray paper on the opposite side of the paper to increase the amount of glue and increase the speed of the dryer; 2 adjust the light pressure line; 3 replace the indentation concave wheel or grinding; 4 modify the pressure line adjustment device after production; Dry speed, close part of the dryer heat source.

3. The paper inside is broken

Analysis of reasons: 1 Indentation is too deep; 2 cardboard is crisp; 3 paper times without toughness.

Solution: 1 Adjust the light pressure line appropriately; 2 Increase the speed of the dryer; 3 Replace the corrugated paper or spray steam on it.

Eight, uneven crease lines and uneven depth

Analysis of the reasons: 1 pressure line is too shallow; 2 pressure line adjustment device failure; 3 pressure line wheel deformation; 4 pressure line cam wear is serious, did not consider the degree of wear in the production, still in accordance with conventional operations.

Solution: 1 adjust the pressure line to the inside of the paper is not broken and folded after the line is clear and straight is appropriate; 2 correction of the pressure line adjustment device to normal; 3 replacement pressure line; 4 visual pressure line moderate degree of deep-tuning.