subject: Plastic Bottle Design Process Needs To Pay Attention Question [print this page] (1), in the extrusion type plastic bottle design, if the material is the high density polyethylene or polypropylene, plastic bottles should be rectangular or oval cross section, the material for the low density polyethylene or other flexible plastic bottle, whose cross section is in a circular well. This facilitates the contents from plastic bottle extrusion. With the plastic bottle with plastic parts mainly for the cap and the sealing device. Plastic bottle design should focus on how to make the plastic bottle can better with cover and a sealing device with. Plastic bottle plastic bottle bottom, is the mechanical properties of the weak parts. Therefore, the plastic bottle bottom is generally designed into a concave shape; plastic bottle corner, and the concave position, are large arc transition. For the convenience of plastic bottles plastic bottles stacked, increase the stacking stability, plastic bottle bottom should design the inner groove.
(2), plastic bottle surfaces using label, should make the label side flat. In the plastic bottle surface to design a" frame", so that the label does not produce accurate positioning, mobile. In blow molding, parison first contact areas, tend to be part of the first hardened. The site of the wall thickness is larger. Edge and corner position, is of parison inflation finally contact parts. The site of the smaller wall thickness. The plastic bottle edges and corners should be designed with rounded corners. Changes of the surface shape such as plastic bottles, plastic bottle of relatively thin, increase plastic bottle surface circumferential grooves or convex rib, can increase the plastic bottle of stiffness and resistance to bending. Longitudinal grooves or ribs, can eliminate the plastic bottle on long-term deflection under load, sagging or warping phenomenon.
(3), plastic bottles printing surface, consumers are most focused parts. Printing surface should be smooth, continuous; if the plastic bottle containing handle, groove, reinforcement structure, design should pay attention not to cause inconvenience to the printing operation. Oval plastic bottles, rigidity is higher, but the high cost of mold manufacturing. Therefore in order to ensure the rigidity of the plastic bottle, in addition to select high stiffness material, but also through the plastic bottle design, reinforced plastic bottle of stiffness and resistance to load intensity.
(4), because the majority of plastic has a notch sensitivity, plastic bottles in the sharp corner, export of thread root, neck and other parts, easy to produce cracks and crack, so these areas should be designed with rounded corners. For a rectangular plastic bottles plastic bottles need support to office, most of the load, so the local increase in the wall thickness, but also can improve the plastic bottles for the stiffness and strength of resistance to load.
After bottle design, use plastic injection mold and blowing mold plastic bottle manufacturing. After plastic bottle processing use filling machine can get the complete product. Injection mold includes injection molding machine. Injection molding machine is a thermoplastic or thermosetting material using plastic mold made of various forms of plastic products the main forming equipment.
