When designing squeeze plastic bottles, if the material is high-density polyethylene or polypropylene,Plastic Bottles the cross-section of the plastic bottle should be rectangular or oval. For low-density polyethylene or other flexible plastic bottles, Plastic Bottlesthe cross-section should be round The shape is good. This facilitates the content to be squeezed out of the plastic bottle. The plastic parts used in conjunction with the plastic bottle mouth are mainly bottle caps and sealers. The design of the plastic bottle mouth should focus on how to make the plastic bottle mouth better match the cap and sealer.
The bottom of the plastic bottle is the weak part of the mechanical properties of the plastic bottle. Therefore,Plastic Bottles the bottom of the plastic bottle is generally designed to be concave; the corners of the plastic bottle,Plastic Bottles and the concave part, are all over the larger arc. In order to facilitate the stacking of plastic bottles and increase the stacking stability of plastic bottles,Plastic Bottles the bottom of the plastic bottles should be designed with internal grooves.
When using labels on the surface of plastic bottles,Plastic Bottles the labeling surface should be flat. A "frame" can be designed on the surface of the plastic bottle,Plastic Bottles so that the label can be positioned accurately without movement. In blow molding, the part where the parison first contacts with inflation always tends to harden first. Therefore,Plastic Bottles the wall thickness of this part is also larger. The edge and corner part is the last contact part of the parison,Plastic Bottles and the wall thickness of this part is small. Therefore, the edges and corners of the plastic bottle should be designed with rounded corners.
Changing the surface shape of the plastic bottle, for example,Plastic Bottles the middle part of the plastic bottle is relatively thinner,Plastic Bottles and increasing the circumferential groove or rib on the surface of the plastic bottle can improve the rigidity and bending resistance of the plastic bottle. Longitudinal grooves or ribs can eliminate deviation,Plastic Bottles sagging or deformation of plastic bottles under long-term load.
