How to seal plastic bottle cap and bottle body
The cap and the bottle body are two inseparable wholes, so there must be other ways to connect the two. There are usually two types of bottle caps and bottle combination sealing methods. One is the compression seal type with an elastic material between the two. The elasticity of the elastic material and the squeezing force specially driven when tightening can reach a perfect ratio. It is sealed without problems, and the sealing rate is 99.99%. The layout principle is to padded a ring-shaped special elastomer material at the butt of the bottle port and the inner bottom of the bottle cap. It is now widely adopted in packaging with internal pressure, and this situation is almost only required for internal pressure.
Another form of sealing is plug sealing. What is plugging? It should be easy for friends to think that we are long gone, take a cone cork to plug the soy sauce glass bottle environment, right? Yes, the plug seal is used to seal it. Based on this principle, the planner planned the bottle cap into a stopper. An additional ring was added to the inner bottom of the bottle cap. The front third of the ring became convex and enlarged, forming an interference with the inner wall of the bottle mouth. Formed a plug result. Stoppered bottle caps are allowed regardless of the tightening force, and the sealing rate is 99.5%. Compared with the previous method, the bottle cap is generally more practical, and the wide rate is quite high.
The two methods have their own advantages and disadvantages. The pressure-sealed type has to be particularly burdened with the cost of the elastic gasket; the plug-sealed type has a shortage of tightness, but it is a pragmatism, with some reasonable reforms in the layout. Sex has been so high.