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Excellent manufacturer for Paper bag,plastic bag,non woven bag,kraft paper bag,canvas bag, different kind of bag,OEM&ODM one stop service, and value added service etc.
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As a professional manufacturer of different kind of bag, Excellent manufacturer for Paper bag,plastic bag,non woven bag,kraft paper bag,canvas bag, different kind of bag,one stop service and also can provide value added service, We see quality  is top first  and with good customer sevice ,hope to win you long-term business,We believe those to meet our customers's...
Film blow
Film blow molding is also known as flat folding film tube extrusion or blowing film extrusion, is a main method of production of plastic film.Regularly molten plastic into the extruder since the former port mode in the annular clearance after extrusion cylinder (tube) structure, by the head of the mandrel center hole into the compressed air, the cylinder blowing a bubble tube blew up (usually 2-3 times), there are between the vertical and horizontal extension, get a blowing ratio of bubble tube, with lateral wind ring cooling (sometimes additional cold),Then it enters the guide splint and traction clip roller to flatten the bubble tube to prevent the air leakage in the bubble tube to maintain the required constant blowing pressure. The bubble tube is flattened to form flat-folded double-layer film, and finally enters the coiling device to wind up