Summary of the most popular corrugated board bondi

2022-08-03
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Summary of corrugated board adhesion problems

(IV) bit by bit glue on single-sided paper single-sided glue type and COPV flight experiment also helps to make the technology more mature, with discontinuous and spotted glue, which is adhered to the guide claw

cause analysis:

① glue paste accumulated on the guide claw or in the glue paste panel, and rubbed off the glue paste on the glue paste roller

② the guide claw is too high or too low

③ the core paper is too wet

④ the glue paste is too thick

⑤ the paper transfer roller is out of place

⑥ there is dirt, wear or bending on the guide claw

⑦ the tension on the core paper is too large ⑧ the glue level in the glue tray is too low

solutions:

① regularly remove the dirt on the guide claw and the rubber disc

② adjust the guide claw

③ cut off the steam flow to the core paper, and increase the coverage of the pre processor to improve the service capacity and level

④ reduce the paste concentration

⑤ check the distance between the upper rubber roller and the paper transfer roller and adjust

⑥ clean or replace the guide claw

⑦ reduce the tension

there are too many operating sequences in the system of the universal experimental machine ⑧ check the glue paste liquid level

(V) spot gluing on the double-sided paper

there are intermittent spot gluing on the paste of the double-sided machine paper, resulting in poor adhesion of the paperboard

cause analysis:

① there is dirt on the rubber scraping roller or metering roller

② there is a deviation in the setting of the rubber scraping roller on the whole equipment

③ the gel in the rubber tray wipes the glue on the rubber pasting roller

④ the position of the leveling roller on the glue dispenser is too high or too low

⑤ there is dirt on the upper rubber roll, or there is foreign matter filling in the concave on the roll

solution:

① remove the dirt on the rubber scraping roller or metering roller

② evenly adjust the position of the rubber scraping roller at both ends of the machine

③ remove the gel in the glue tray

④ readjust the device

⑤ remove the dirt on the upper rubber roller. Zipper bonding

it is found that the bonding strength of single-sided machine or double-sided machine is very weak, insufficient or no bonding, and this bonding can be satisfactory in corrugated production. This observation is made after the corrugated line, so this problem is different from the previously mentioned loose corrugation, bit by bit adhesion or loose corrugation at the longitudinal cutting edge, mainly because it is related to paper

cause analysis:

① there are obvious water stains attached to the core paper, which is different from the normal operation of the equipment

② there are abnormal conditions on the high-density or high-performance tissue paper

solution:

① reduce the glue paste concentration at the appropriate position (usually on the single-sided machine). Try to use the core paper from another supplier and discuss the problem with the original supplier

② because the tissue paper with high density or good performance contains more fibers in a certain thickness, its heat transfer performance is also better than the general traditional tissue paper. The solid content of starch should be increased and the temperature of each part of the tile line should be reduced to solve these problems

--- source: scheme for solving low sampling rate in paperboard production process, June 2005

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