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Comparison Of The Characteristics Of Paper Tube Cutting Machine

A structural improvement of the paper tube elbow curling die, the main structure includes the paper tube and die to be processed. Paper Tube Cutting Machine

A fixed screw hole is provided at the bottom end of the disc-shaped die, and a guide groove is arranged on the end face to cooperate with the size of the paper tube to be processed, and the edge of the auxiliary pipe is connected with the guide groove The paper tube is guided into the guide groove and the die is rotated to curl the inner edge of the paper tube into an elbow. The inner edge of the paper tube to be processed is cut into the elbow working surface in advance, and an appropriate number of expansion holes are provided on the inside of the die guide groove to expand the inner edge of the paper tube above the elbow Has a corner.Paper Tube Cutting Machine

The traditional paper tube glue mainly gelatin, starch, polyvinyl alcohol adhesive and polyvinyl acetate emulsion. Which gelatin, starch adhesive due to low bonding strength, short shelf life has been basically not used; polyvinyl alcohol adhesive is the biggest drawback of poor water resistance, paper tube compressive strength with the storage time increased significantly decreased, although after the acetalization Can be partially improved, but still can not meet the requirements; polyvinyl acetate emulsion water resistance than the previous few are better, but the initial viscosity is low, bonding paper tube after the compressive strength and creep resistance is its main drawback The To this end, we have developed a comprehensive performance, self-crosslinking emulsion-type adhesive, and put into production and use, and achieved good results.Paper Tube Cutting Machine

Alcoholization of polyvinyl alcohol can not only improve its water resistance, but also increase the frost resistance of glue. In the past, polyvinyl acetal acetalization are used as raw materials, although the price is low but too toxic, in recent years with the people's awareness of environmental protection, with formaldehyde exceeded the product has been phased out.Paper Tube Cutting Machine