Physical factors affecting portable bag kettle composite compressive strength

The portable bottle bag market demand is more and more big, the quality of the portable bottle bag more and more important, however, composite cohere factors that affect the portable bottle bag are: (1) the adhesive viscosity. Adhesive to be sticky material that there is a close relationship between the actual infiltration and its viscosity, viscosity good liquidity, thus is advantageous to the actual infiltration. (2) be sticky surface treatment of base material. Any base material surface have adsorption, in order to get the best effect of coherence, any base material surface treatment must be applied to the surface. Flexible packaging composite process, it was generally supposed that only the base material of corona treatment, actually should also include the surface cleanliness and surface roughness, etc. (3) internal stress. In the process of composite binder, the internal stress is one of the important factors affecting the compressive strength and durability, therefore, in the process of composite, the corresponding effective measures must be taken to reduce internal stress. But it is difficult to achieve, in the concrete operation of should choose small internal stress of adhesive. The internal stress including shrinkage stress and thermal stress. (4) the thickness of the rubber. There is a close relationship between the thickness of the rubber and compound strength. General rule is: in the guarantee under the condition of no shortage of binder, compound strength increases with the reducing of the thickness of the rubber. Rubber cover too thick or too thin, the defect formation of air bubbles or lack of glue inside the chances will increase. Rubber thickness, because of the binder and glued base material coefficient of thermal expansion, caused by thermal stress, leading to a fall in composite strength, of course, lack of glue the rubber cover is too thin will cause and led to the decrease of the composite strength.