Blow molding process of PVC water supply pipe

Blow molding process of PVC water supply pipe
Index properties of PVC pipe to blow molding grade, such as melt strength, toughness and ESCR, similar to hot forming application level, so we can use the similar grade. The blow is usually smaller for packaging container manufacturing, pharmaceuticals, cosmetics and shampoo. One advantage of this process is the production of PVC water supply pipes to automatically go to the corner, no need to be like the general blow molding process as late finishing. Although there are some narrow MWD grade will be used to improve the surface finish, generally used to wide width MWD grade.
1, PVC water supply pipe interface generally has two ways: rubber ring interface, glue stick interface.
1) rubber ring is in the end of the pipe expanding machine automatically expanded into a socket with a recess, put on the flexible rubber sealing ring, one end of the other pipe without flaring inserted into the sealing sockets installed around the complete connection.
2) glue stick interface mode is at one end of the pipe is expanded into a smooth socket, and the other end of the pipe is not expanded to the outside of the surface and the expansion of the mouth of the table coated with a dedicated glue, and then through the connection to complete the connection.
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