Production process of high-strength ultrathin composite corrugated boards

Abstract

The invention discloses a production process of high-strength ultrathin composite corrugated boards. The process includes the steps of a, producing kraft, and winding the produced kraft to first, second, third, fourth and fifth paper rolls; b, allowing the first, third and fifth paper rolls to provide the kraft to a double facer, and allowing the kraft on the second and fourth paper rolls to be formed by a corrugating machine and be supplied to the double facer; c, after the double facer outputs, pressing the kraft and corrugated paper into composite boards by a laminating device; d, drying the composite boards in a drying device before outputting finished boards; e, cutting and storing the finished boards. The process has the advantages that the surface of the corrugated paper is evenly coated with glue by the double facer, long composite boards can be produced by the process and can be cut as required, and different composite boards of different corrugated types, such as DE type, can also be produced by the process.

Description

technical field [0001] The invention belongs to the field of composite cardboard manufacturing, in particular to a manufacturing process of high-strength ultra-thin composite corrugated cardboard. Background technique [0002] At present, cartons are widely used as hard packaging for various products, and their demand is very wide. Existing cartons are often divided into single-layer cartons and double-layer cartons. Single-layer carton refers to a carton formed by two boards of single-flute cardboard, with a layer of corrugated paper sandwiched between the two layers of paper. The corrugated paper is usually type A or type B, and is used for product packaging that does not require high carton strength; Double-layer carton refers to a carton made of composite cardboard. Composite cardboard means two layers of corrugated paper sandwiched between three sheets of paper. According to the type of corrugated paper, it is divided into AA type cardboard, BB type cardboard, etc. T...

AI Technical Summary

Problems solved by technology

Single-layer carton refers to a carton formed by two boards of single-flute cardboard, with a layer of corrugated paper sandwiched between the two layers of paper. The corrugated paper is usually type A or type B, and is used for product packaging that does not require high carton strength; Double-layer carton refers to a carton made of composite cardboard. Composite cardboard means two layers of corrugated paper sandwiched between three sheets of paper. According to the type of corrugated paper, it is divided into AA type cardboard, BB type cardboard, etc. The forming process mainly goes through the following steps: First, after the corrugated paper is glued to the first layer of paper by manual glue application, after drying, it is cut in half and bonded to each other, and then a layer of paper is glued on the surface of the corrugated paper exposed outside Thus forming; for example, 100 meters of corrugated paper and the corresponding face paper are bonded and dried to form the first forming paper, and the first forming paper is divided into two 50 meters forming papers, and then the corrugated paper of one of the 50 meters forming papers The surface is bonded with another 50-meter forming paper surface paper, and then a layer of paper is bonded to the corrugated paper exposed on the outside, and finally it is dried; using this existing production process can only make shorter composite cardboard , it is quite troublesome to manufacture when longer three-sided double-sided corrugated paper is required, and this process can only be used to produce composite cardboard with the same type of corrugated paper, such as AA type; in addition to the above problems, there are still problems in the existing process because manual gluing is not enough Uniformity may cause excessive local humidity, which affects the strength of this composite paperboard

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