flickr Sticker adhesive label materials and adhesives is a medium between the substrate, the connecting part. In accordance with the features can be divided into two sorts of permanent and removable, adhesive formulations suitable for a selection of various surfaces and environments. Label adhesive is the most essential portion of technologies is the essential sticker applied technology.
Adhesive coating Common use adhesive tape coating method, the simple principle is that by coating the pressure of the initial cavity into the adhesive, coating the prime is an adjustable head size of the slit, coating paper with the finish of the operation , uniform adhesive coating head by the slits in the outflow and coated paper in the bottom surface. Coating quantity of the adjustment can be adjusted on the slit, adhesive coating weight is to determine the important properties of adhesive materials, the general recommendation of the coating weight is 24g/m2, tolerance is three . When the adhesive viscosity is changed by adjusting the stress to sustain the same general weight James Booker. Advanced tape coating gear coating via the thickness of the infrared scanning sensor feedback control device to the computer, after analyzing the information processed automatically adjusted to make certain the stability of adhesive coating good quality. Adhesive coating weight ought to be based on seasonal and regional variations and alterations in temperature and humidity can also be adjusted according to client needs.
General rule is the winter than in summer time coating coating weight should be large. Winter in the north than in the South used to use large coating. For diverse substrates, rough surface than a smooth surface coating volume. Coating quantity of the bond strength and material related to a specific extent, proportional to bond strength and coating. Adhesive coating excessive and as well tiny processing and storage of materials have a direct impact.
Coating difficulties caused by excessive: Generate overflow plastic phenomena: in particular, will appear in the summer or a single sheet of paper roll adhesion face glued collectively, resulting in waste.
Cutting troubles: the blade simple to glue, and stick to the paper and the end surface of the printing approach to bring hidden dangers.
On the press feeding issues: the adhesive bond in the feeding boards usually affect regular feeding and positioning of registration.
Excessive adhesive label pasted to the goods, the label will have about the overflow glue, glue the black edges to form dust. Higher temperature, the label appeared in the goods moving dislocation phenomenon.
Coating caused by the small quantity of problems:
Impact viscosity: label very easily detached from the goods, in particular rough surface or a huge curvature surface.
Impact material structure: the surface material and backing paper from the line of force amongst the material layer is as well tiny, or when the label in emission cutting edge collectively with the paper peeled off, affecting the standard production.
Often be adjusted according to the needs of our buyers coating weight of the size of the label in the supermarket utilizing less coating amount requested. But if you want to stick to the surface of rubber and other particular coating to boost the amount needed to improve adhesion.
Classification of adhesives Below diverse strategies, adhesives can be divided into a selection of various types. Such as in accordance with the coating technology can be divided into: hot sol type, solvent sort adhesive, rubber type emulsion by chemical composition can be divided into: rubber substrate kind, acrylic by bonding functions can be divided into: a permanent class, can be Remove class by application can be divided into: basic-objective, special adhesive sort, medical type, low temperature, higher temperature and so on.
Initial viscosity: the label adhesive and the substrate with little stress between the speak to, the adhesive on the adhesive substrate adhesion as the initial viscosity. Tag initial contact with the substrate viscosity immediately right after with fantastic adhesion, take away the tag will take some force, the initial speak to with low viscosity of the label substrate, the adhesion is tiny, the label can easily be removed .