About the corrugated paper Introduction

Introduction

Corrugated cardboard for corrugated packaging is a slab made of corrugated paper formed by corrugated paper and corrugated paper processed by corrugated sticks. It is generally divided into two types: single corrugated cardboard and double corrugated cardboard. According to the size of corrugated: Five types: A, B, C, E, and F.

Corrugated cardboard classification

1. Classification by type: A, C, B, E and their combinations, such as: AB, BC, BBC, etc. There are now more fine corrugated F in production on the market.

2, according to the number of original paper layers: two-layer cardboard, three-layer cardboard, four-layer cardboard, five-layer cardboard, seven-layer cardboard, etc.;

3, according to the shape of the : U-shaped, V-shaped, UV-shaped; now the general UV shape on the market;

4, corrugated performance comparison:

 type ，high  ，number / 30mm reduction ratio flat compression strength side pressure strength

A 4.5-5.0 34+2 1.55 4 1

C 3.5-4.0 38+2 1.47 3 2

B 2.5-3.0 50+2 1.36 2 3

E 1.1-2.0 96+2 1.26 1 4

5, other:

Corrugated: Flute; single corrugated cardboard (also known as three-layer cardboard): single wall; double corrugated cardboard (also known as five-layer cardboard): double wall; seven-layer corrugated cardboard: triple wall;

Cardboard composition

Corrugated cardboard is made by bonding paper, backing paper, core paper and corrugated paper processed into corrugated corrugated. According to the demand of commodity packaging, corrugated board can be processed into single-faced corrugated board, three-layer corrugated board (pictured in Figure 2), five-layer, seven-layer, eleven-layer corrugated board. Single-faced corrugated cardboard is generally used as a lining protective layer for commercial packaging or to make lightweight krafts and bolsters to protect the goods from vibration or impact during storage. Three-layer and five-layer corrugated cardboard are used in corrugated boxes. common. Many products are packaged in three or five layers of corrugated cardboard on the contrary, beautifully packaged, printed on the surface of corrugated boxes or corrugated boxes, and not only protects the inner goods, but also promotes and beautifies Inner goods.

Production Process

Principle Overview: Corrugated paper is pressed and formed by upper and lower corrugating rolls. Paste on the upper paste roll, the paper and the formed corrugated paper are laminated on the tangential line of the pressure roller and the upper corrugating roller to form a two-layer corrugated cardboard. The double-sided machine part is combined with other single corrugated board and paper.

Production Environment

The production environment temperature should not exceed 33 ° C, the air humidity should not exceed 45%, otherwise the cardboard is very easy to absorb moisture, and its own moisture is not volatilized, naturally reducing the pressure of the carton. In addition, the small box blank is preferably rotated for 4 hours before molding. It is indeed necessary for the customer to urgently use the air blower to force the air to promote the bonding of the cardboard as soon as possible to remove excess water. In short, in order to improve the pressure on the color box of the color box must be comprehensive analysis and consideration, and strive to reduce all kinds of unfavorable factors, can not care about this loss, otherwise all efforts are futile.