METHOD FOR PREVENTING SIDE CUBICAL EXPANSION PHENOMENON IN THE PRODUCTION OF SQUARE PLASTIC CONTAINER FOR IMPROVING PRODUCTIVITY

摘要

In the present invention method of manufacturing a plastic rectangular container goes through the step of extruding a synthetic resin by molding the parison (parison) and then made in the form places it in a mold with the plastic container the shape of a square engraved blow or vacuum and cooled, the formed pressing the central portion of the container side before complete cooling of the container after a given deformation of the container to a concave shape to complete the cooling is provided a method for producing a square plastic container, without the side-fold called phenomenon. The method according to the present invention logistics costs and packing costs by providing a relatively precise volume during side can produce a flat container elegant overall shape, as well as significantly improve the productivity of plastic rectangular container loading for warehousing and transport It can be significantly reduced.