作者认为螺旋芯棒机头是解决熔接线提高制品质量的较好办法，应推广到管材挤出生产中去。
The author holds that the use of spiral mandrel die is a good method to eliminate the fusion jointing line to improve the product quality, and it should be adopted in the p…
薄膜挤出吹塑是应用最广泛的塑料薄膜加工方法之一，而螺旋芯棒式机头则是应用最为广泛的、先进的吹膜机头。
Spiral mandrel blown-film die is advanced and widely used in film blowing which is one of the most popular processing for plastics film.
薄膜挤出吹塑是应用最广泛的塑料薄膜加工方法之一，而螺旋芯棒式机头则是应用最为广泛的、先进的吹膜机头。
Spiral mandrel blown-film die is advanced and widely used in film blowing which is one of the most popular processing for plastics film.
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