Indentation process of foaming laminating packaging box blank

Abstract

The invention relates to an indentation process of a foaming laminating packaging box blank. The indentation process of the foaming laminating packaging box blank comprises the following steps that afoaming laminating plate is pulled to be transported from back to forth, preheating is carried out, a longitudinal crease line extending in the transporting direction and crease extension parts on twosides of the longitudinal crease line are pressed, the crease extension parts on two sides of the longitudinal crease line are further compacted, cooling and shaping are carried out, and a transversecrease line is pressed. While the longitudinal crease line is pressed, the wheel surface is utilized to extrude and expand the foaming laminating plate to two sides to form the crease extension parts, then the crease extension parts on both sides of the longitudinal crease line are further compacted by a longitudinal plane line pressing wheel, the longitudinal crease line and the crease extensionparts are cooled and shaped, the crease extension parts are formed on two sides of the longitudinal crease line, the crease extension parts play a role of buffering and assisting folding, and finallya transverse line pressing wheel group presses out the transverse crease line in the foaming laminating plate conveying process, so that the longitudinal crease line and the transverse crease line are pressed out on the foaming laminating plate, and breakage of the foaming laminating plate is avoided.

Description

technical field [0001] The invention relates to a production process of a packaging box, in particular to an indentation process of a foamed and laminated packaging box blank. Background technique [0002] At present, packaging boxes are generally made of corrugated cardboard. Corrugated cardboard is prone to aging, damage, and is not moisture-proof, and corrugated cardboard needs to be made of wood, which often leads to excessive felling of trees and damages the environment, which is not environmentally friendly. [0003] Therefore, the industry has been trying to find some packaging materials that can replace corrugated cardboard. If plastic boards are used entirely, the cost will be too high. Moreover, due to the high density of plastic boards, the produced packaging boxes are heavy and not suitable for handling. In addition, Thicker plastic boards are difficult to fold and pack, and thinner plastic boards are hard to meet the packaging requirements. Therefore, it is diff...

AI Technical Summary

Problems solved by technology

Because the PS foam board is brittle, and the plastic film will break if it is partially stretched excessively, the crimping requirements are quite high, and the existing creasing knives and creasing wheels cannot press out deep and qualified crease lines. , it is impossible to press out a deep crease line

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