When designing extruded plastic bottles, if the Plastic Pump(KEXON) bottle is made of high density polyethylene or polypropylene, the cross section of the plastic bottle should be rectangular or oval. For plastic bottles made of low density polyethylene or other flexible plastic bottles, the cross section is preferably circular. This facilitates the extrusion of the contents from the plastic bottle. The plastic parts matched with the plastic bottle mouth are mainly bottle caps and sealers. The design of plastic bottle mouth should focus on how to make the plastic bottle mouth better fit with the cap and sealer. The bottom of the plastic bottle is the weak part of its mechanical properties. Therefore, the bottom of the plastic bottle is generally designed to be concave; The corners of plastic bottles, as well as the inner recesses, are over-rounded. In order to facilitate the stacking of plastic bottles and increase the stacking stability of plastic bottles, the bottom of plastic bottles should be designed with internal grooves.

When the plastic bottle surface is labeled, the labeling surface should be smooth. A "frame" can be designed on the surface of the plastic bottle so that the label can be accurately positioned without moving. During blow molding, the first contact part of parison inflation always tends to be the first hardening part. Therefore, the wall thickness of this part is also larger. Edge and corner parts are the last contact parts of parison inflation, and the wall thickness of this part is small. Therefore, the edges and corners of plastic bottles should be designed with rounded corners. Changing the surface shape of plastic bottles, for example, the middle part of the plastic bottles is relatively thinner, and increasing the circumferential grooves or ribs on the surface of the plastic bottles can improve the rigidity and bending resistance of the plastic bottles. Longitudinal grooves or reinforcing ribs can eliminate deflection, sagging or deformation of plastic bottles under long-term load.

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