How to improve the production rate of corrugated board through processes

Production staff should be very familiar with the corrugated board's technological process: the corrugated board is made of a single-faced corrugating machine to be attached to the inner paper to form a strong single-faced corrugated board. After passing through the bridge to the gluing machine for gluing and compounding the surface paper, and entering the dryer to dry, press the production line according to the production requirements, and cut it into cross-cuts to make cardboard. Obviously, the reasons for the waste of raw paper and the low yield of paperboard appear in several key processes such as single-sided machines, conveyor bridges, glue compounding, drying and partial pressure cutting.

After the single-sided unit's single-faced machine is turned on, the base paper is input, the corrugated paper and the paper are not evenly attached, and the paper is skewed. Solution: 1. Accelerate the speed of the vehicle, and promptly guide the positive; 2 that is, in the corrugating machine or in the corrugated preheater cylinder surface or on the ground set points or lines for visual adjustment.
The paper breaks due to cracking in the preheater. Solution: Reduce the warm-up area depending on the paper quality.
During the inspection of the manufacturer and the manufacturer of the tile, a small slap in the roll was torn in. After the corrugating machine was input, the single-faced corrugated paper was indeterminate. Solution: Before starting the machine, prepare a slightly larger wattage paper than the slap (color and grammage are the same as those on the corrugating machine. There is a gap in the paper to take the paper, and the paper has a notch to take the wavy paper. Before the base paper enters the corrugating machine, Both sides of the clip can be glued together. The action must be quick, accurate, timely, and safe.)

Avoid frequent stop and start, can effectively prevent the inside, tiled paper is not bonded.
When transporting the bridge across the bridge, the stack of single-sided machine boards was excessive, and the speed of the dryer was excessively fast or suddenly accelerated. Solution: When crossing the bridge, the operator should pay attention to the uniform speed of the dryer to increase the speed. The start should not be too fast. When the joint is broken, the upper joint surface should run along the paperboard in the direction. Do not stop when bonding.
For a reason, when the width of the tile in the single-faced corrugated cardboard is not uniform, the paper gripper whose direction is controlled is scraped. Solution: When the width of the paper is wide, the two plywoods of the paper holder should be adjusted to be slightly smaller than the width of the paper. If the width of the paper is wide, the portion wider than the paper should be neatly scraped in front of the paper holder.
After the dryer is turned on, all layers of single-sided cardboard are not aligned. Before the dryer is turned on, the single-sided cardboard holder is moved 2-3 cm away from each layer according to the side-in and side-out dimensions of the slitter.

On the plastic compound 1. At the request of the customer, ordinary cardboard is used as the tissue paper. After preheating, the original paper becomes brittle, and it is easy to be broken when it enters the dryer. Solution: Reduce the area of ​​the preheated surface, while increasing the amount of glue properly, reducing the paper surface force; also can manually assist the rotation of the drum until normal.
2. After entering the dryer, the side lines of the paper and the single-sided machine are not aligned, and the width of the production paper is not the same. Solution: First of all, each layer of paper edge and paper edge alignment can be sent to people for drying. When they are missing, they can be sent to others to speed up the speed of the drying machine. However, the missing part has constituted waste. Whether the width of the face paper is wider or narrower than single-sided corrugated cardboard, it must be aligned. Secondly, if the edge of the paper roll is not in line with the paper holder or the clip board, even if the raw paper edges and the paper head are aligned and sent to the dryer, the running distance will be uneven. In order to solve this problem, we may wish to advance from the side of the conveyor bridge paper holder and clipboard to the top of the paperless shaft bracket 0.5cm away from the roll paper core and click the button on the shaftless bracket. , Adjust to the edge of the tissue paper and the line perpendicular.

Dryer drying 1. Parking for too long, over time, caused a large area of ​​cardboard to open the plastic, especially the three-story board. Solution: Do not stop in production as much as possible, when it is necessary to stop, the operator predicts the parking time according to the situation. If it is not a short time (more than two minutes for five floors and three minutes for three floors), it is better to cut off each before gluing. Layers of paper, open the cardboard out of the drying tunnel.
2. Dryer conveyor belt deviation, cardboard edges open plastic, poor adhesion, and solution with a rounding correction in the wheel, stacking unqualified cardboard, single-handedly bonded. The automatic correcting device has been used now, which has a good effect, reducing the labor intensity and reducing the scrap rate.
3. Dryer drying temperature is too high, cardboard debonding fracture, more common in three cardboard. Solution: In the face of fragile inside and outside paper, increase the speed of the dryer, and at the same time timely discharge and depressurize, depending on the situation to notify the glue machine to increase the amount of glue; glue amount should be appropriate, otherwise there will be streaks.

Pressure line, vertical and horizontal cut 1, pressure line break inside, face paper, pressure line beyond the allowable error. According to the paper, cardboard dry humidity to adjust the pressure line depth. With the paper inside the indentation is not broken, not cracking is appropriate; in addition to the dimensional error is the pressure wheel under the concave wheel deflection, correction can be.
2. Adjusting the trimming is not timely, causing the paper to cross the bridge to the left or right and adjust the paper gripper.
3. The cross cutter is blunt and the imported kraft carton board is easy to tear cross sections. The new knife should be polished or replaced in time. The knife on the bottom must not be too tight to avoid injury.

In addition, according to the number and size of the paperboards produced, the paper webs should be used rationally, and the paperboard trimming edges should be controlled within 0,5mm-2em. For paperboards with a lack of material or with slight degumming (1-2mm from the edge of the cardboard), repairs can be carried out without sacrificing quality, thereby reducing waste and improving the passing rate of finished products.