Background: In recent times, large diameter plastic pipes have been widely used in many
functions because of their unique advantages. These applications include water supply, drainage, heating
network, industrial transportation, gas delivery, agricultural irrigation, etc. Therefore, manufacturing
large diameter plastic pipes economically and efficiently has now become an important research
Objective: This paper reviews patents of plastic pipe manufacturing or forming to provide insights and
references to researchers in the domain of larger diameter plastic pipe production.
Methods: This paper reviews the Spouted-accumulated Forming, a production method that combines
the advantages of traditional extrusion, calendaring, and additive manufacturing. It is a novel process
to manufacture large diameter plastic pipes.
Results: The experiment result shows that Spouted-accumulated Forming can be used to manufacture
large diameter plastic pipes efficiently with lower costs. This paper argues that this novel method will
serve as a promising technology to manufacture larger diameter pipes in the future.
Conclusion: Since traditional manufacturing processes cannot fulfil the requirement of large diameter
of plastic pipes, it is necessary to develop novel processes such as Spouted-Accumulated Forming
(SAF, based on additive manufacturing).