Preparation method of environment-friendly double-wall corrugated paperboard

Abstract

The invention relates to a method for preparing an environment-friendly double corrugated cardboard, which belongs to the technical field of packaging. The paper rolls of inner lining paper, face paper and core paper are separated and then cut; both sides of the inner lining paper are coated with water-resistant agents; The final surface paper and core paper are preheated and pretreated respectively, and the core paper is pressed to form a corrugated core paper; the corrugated core paper is coated with an adhesive, and then bonded to each set of surface paper to form a single-sided corrugated paper; Two sets of single-sided corrugated paper are preheated at the same time, and the lining paper is also preheated at the same time; the double-corrugated paper is arranged into five layers of corrugated paper, and then the double-corrugated paper boards are sent to the multi-layer pasting unit for multi-layer pasting, drying, cooling and setting. And control moisture. In the preparation method of an environmentally friendly double corrugated cardboard provided by the present invention, the lining paper has a good waterproof and moisture-proof effect, and can significantly improve the strength, toughness and impact resistance of the corrugated cardboard. Therefore, the double corrugated cardboard produced by this method, It has good flat compressive strength and excellent packaging performance.

Description

technical field [0001] The invention relates to a preparation method of an environment-friendly double corrugated cardboard, belonging to the technical field of packaging. Background technique [0002] Corrugated cardboard is a multi-layer bonded body, also known as corrugated cardboard. It is made of at least one layer of corrugated paper and one layer of cardboard paper, which has good elasticity and extensibility. It is mainly used in the manufacture of cartons, the sandwich of cartons and other packaging materials for fragile goods. Corrugated cardboard is made of raw cardboard similar to yellow cardboard by beating domestic straw pulp and waste paper, and then machined to make corrugated sheets, and then glued on the surface with adhesive and boxboard paper. At present, corrugated paper with relatively good strength is used for packaging cardboard, and the flat crushing strength is an important index to measure the compressive capacity of corrugated paper. Layer or s...

AI Technical Summary

Problems solved by technology

At present, corrugated paper with relatively good strength is used for packaging cardboard, and the flat crushing strength is an important index to measure the compressive capacity of corrugated paper. Layer or seven layers of corrugated paper, however, the flat compression strength of corrugated paper increased by this method is limited. If the strength of wood is to be achieved, the thickness of corrugated paper will be too thick and the cost will be too high