Shanghai Lujia's Solution to the Problem of Glue [Book Binding]

① Problem: if the milling groove is too shallow or the groove distance is too large, the rubber nail will not break with enough force?

scheme: the depth of milling groove is generally controlled at 0.7~1.5mm, and the groove distance is controlled at 4~5mm. the thicker the paper, the larger the groove depth and the smaller the groove distance.

②problem: Impurities in the milling groove have not been removed, causingmilling holeis blocked and the glue cannot penetrate completely?

plan: do not clean the milling groove.

③question: too little glue is used on the back of the book?

scheme: the thickness of the adhesive layer is generally between 0.5 and 1mm, and the thicker the back of the book, the thicker the adhesive layer should be.

④question: the winter weather is cold, the hot melt adhesive is relatively poor in fluidity and cannot penetrate into the back slot of the book?

plan: the use temperature of Lu Jia's adhesive is 130~170 c, and the temperature can be controlled within 10 degrees in winter according to the local temperature.

⑤question: according to the paper material, equipment characteristics and season, to choose the appropriate glue?

scheme: select different rubber products according to paper, equipment characteristics and seasons.

⑥question: the product is not stored as required and is affected with damp?

scheme: hot melt adhesive will decrease its strength as the temperature rises. it should be stored in a cool and dry place according to the storage requirements of the product.

⑦question: after heating for a long time, the glue will age and become brittle after receiving high temperature?

scheme: replace all aging glue with new glue

⑧question: when the book is in use?

plan: directly replace the glue that meets the current season.

⑨problem: the thermostat is broken, and the actual temperature in the rubber pot does not match the temperature displayed by the machine (for example, the machine temperature shows 160 ℃, while the actual temperature of the rubber pot is 140 ℃)?

solution: overhaul the thermostat. Standing temperature measuring instrument to detect the actual temperature in the rubber pot.