Corrugated paperboard forming and production of single facer

 Corrugated paperboard forming and production of single facer

As the equipment for corrugated cardboard forming and production, the single facer is the basis for the quality of carton products. The quality status of semi-finished corrugated cardboard produced by the single facer is nothing more than three basic characteristics: qualified products, unqualified products and defective products. Qualified products refer to the quality indexes of corrugated paperboard fully meet the quality requirements of relevant standards; Non-conforming products refer to one or more indicators of corrugated cardboard that do not meet the quality requirements of relevant standards; Defective products refer to those between qualified products and unqualified products with slight defects in quality, such as rough edges, specification differences, local degumming, blistering, collapse, beveling, cracking, etc. The above three standards are generally only the definitions of the internal standards of Industrial and Commercial Corporation Limited. www.chinacartonmachine.com

The two-layer corrugated paperboard produced by a single unit of single facer has not been covered, and its bursting strength and edge compression strength will be greatly reduced. Therefore, the standard of corrugated paperboard cannot be applied. So far, we have no standard of semi-finished corrugated paperboard for single facer. Generally, enterprises with relatively standard systems adopt the enterprise standard developed by themselves to control the semi-finished corrugated paperboard in the production process, It can be seen from the characteristics of the post-processing and production process of the carton that maintaining the flatness of the corrugated cardboard has a crucial impact on the laminating quality and die-cutting accuracy of the corrugated cardboard. However, the enterprise standard is also not detailed, complete and accurate. In the process of practice, we should pay attention to continuous analysis and summary, so as to carry out appropriate revision and improvement, so that the standard can play a better role in standardizing the production process and operating technology.

Influence of poor quality of single facer semi-finished products on post-processing production After the production of single facer's single face corrugated semi-finished products, the pre-printed carton face paper and two-layer single face corrugated paperboard must be mounted by the overlayer to form three-layer corrugated paperboard, and then the carton products can be made by die-cutting and molding. If the semi-finished corrugated paperboard produced by the single facer has obvious warping deformation, it will affect the normal paper feeding and the accurate positioning of the corrugated paperboard of the active laminating machine. Some corrugated paperboard curls and deforms violently. The operator of the laminating machine has to fold the warped corrugated paperboard to the opposite target index to maintain the flatness requirements required for the active paper feeding. However, after the corrugated paperboard is crumpled and crushed, The compression strength of the formed carton will be greatly reduced. If the corrugated cardboard of the single facer warps violently, manual operation is adopted.