The effect of the sticker on the wrinkling of the label: The label itself is flat, and wrinkling occurs immediately after labeling or for a certain period of time, all due to objective conditions at or after labeling.
Due to the irregular surface of the bottle body, part of the voids during the automatic labeling process are partially wrinkled by the sponge wheel, and the solution must improve the shape of the bottle body.
The effect of the sticker on the wrinkling of the label:
The surface of the surface on which the object is to be attached should be a flat surface. When the bottle has a spherical surface, the label is prone to wrinkling. If the spherical surface of the bottle body is not serious, it can be improved by reducing the stiffness of the surface material, such as a thinner thickness or a softer material.
Etc.; but if the spherical surface is more serious can only be modified to solve the mold.
The effect of the sticker on the wrinkling of the label:
For plastic bottles or injection molded parts, the labeling time must be after the sticker is completely cooled and set. The cooling time varies with the ambient temperature, the summer time is longer, and the winter time is shorter. However, the deformability of summer bottles is smaller, and the degree of deformation in winter is larger. In addition, some bottle factories will reduce costs by thinning the bottle walls due to customer requirements. This will cause bottle body deformation on the one hand, and on the other hand, the bottle body will be too soft and will be deformed under the pressure of the application pressure when labeling. , forming wrinkles, for which the bottle factory can solve the problem by adding stiffeners.
Labeling Wrinkles - Environment
The effect of environmental temperature and humidity on labelling wrinkling:
For self-adhesive products whose surface material is paper, the main component is wood fiber. When the humidity of the environment is relatively high, the paper absorbs moisture. When the humidity of the environment is relatively low, the paper releases moisture, and when the paper absorbs water, After the serving, there will be swelling in the direction of the CD, and eventually there will be wrinkling.
1. Influence of environmental humidity:
The solution can be UV water varnish, or film treatment, or the use of film adhesive materials to avoid the problem of water absorption; for the finished label, the label can be placed in a damp environment before labeling, fully humidified After labeling.
2. Influence of ambient temperature:
The coefficient of thermal expansion of the label and the material to be attached is different. In the process of passing the object at a high temperature and returning to a normal temperature, the degree of deformation of the object to be attached and the material of the label are inconsistent, and wrinkling may also occur. The solution is to select a sticker with a coefficient of thermal expansion close to that of the material to be used to process the label. For example, PE bottles should be made of PE surface material.