Requirements for automatically labelled roll labels
The stiffness of the label is the key to the label. Therefore, a certain strength and hardness of the surface material is required. The stiffness of the label is related to the thickness of the material and the area of the label. Therefore, when using a soft film material, the thickness should be appropriately increased. Control above 100μm. Thin paper materials, such as 60~70g/m2 labeling paper, are generally not suitable for making large labels, but suitable for processing into small labels, such as price labels used on price tags. Poor rigidity of the label will cause the label not to be issued during labeling, or the label will be rewinded with the backing paper, which will invalidate the automatic labeling.
Release force, also known as peel force, is the force when the label is separated from the backing paper. The release force is related to the type and thickness of the adhesive and the silicon coating on the surface of the backing paper, as well as the ambient temperature during labeling. If the release force is too small, the label will easily fall off (leave the bottom paper) during the conveying process; if the release force is too large, it will be difficult for the label to detach from the bottom paper, and the label cannot be released. Various technical indicators should be comprehensively controlled to keep the release force within a reasonable range.