Plastic Bottle Manufacturer-Plastic Bottle Production: Problems
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What problems should be noticed during the production of plastic bottles? How to improve the production quality of plastic bottles? China's professional plastic bottle manufacturer & Ningbo RUICHANG Commodity Packaging CO , Ltd . elaborated the following 4 items: (1) When designing extruded plastic bottles, if the material is high-density polyethylene or polypropylene, the cross-section of the plastic bottle should be rectangular or oval. For low-density polyethylene or other flexible plastic bottles, the horizontal The cross section is preferably circular. This facilitates the extrusion of the contents from the plastic bottle. The plastic parts used with the plastic bottle mouth are mainly bottle caps and seals. The design of the plastic bottle mouth should focus on how to better fit the plastic bottle mouth with the cap and seal. The bottom of the plastic bottle is the weak part of the mechanical properties of the plastic bottle. Therefore, the bottom of the plastic bottle is generally designed as a concave shape; the corners of the plastic bottle and the concave portion are made with large arcs. In order to facilitate the stacking of plastic bottles and increase the stacking stability of plastic bottles, an inner groove should be designed at the bottom of the plastic bottles. (2) When using a label on the surface of a plastic bottle, make the label surface flat. A "frame" can be designed on the surface of the plastic bottle so that the label can be accurately positioned without movement. In blow molding, the part where the parison blows first contacts always tends to harden first. Therefore, the wall thickness of this part is also larger. The edges and corners are the last part where the parison is inflated, and the wall thickness of this part is small. Therefore, the edges and corners of the plastic bottle should be rounded. Changing the surface shape of the plastic bottle, such as the middle of the plastic bottle is relatively thin, increasing the circumferential grooves or ribs on the surface of the plastic bottle can improve the rigidity and bending resistance of the plastic bottle. Longitudinal grooves or reinforcing ribs can eliminate the deviation, sag or deformation of plastic bottles under long-term load. (3) The printed surface of plastic bottles is the most concentrated part of consumers. The printing surface should be flat and continuous; if the plastic bottle contains handles, grooves, stiffeners and other structures, care should be taken in the design to not cause inconvenience to the printing operation. The oval plastic bottle has higher rigidity, but the manufacturing cost of the mold is higher. Therefore, in order to ensure the rigidity of plastic bottles, in addition to selecting high-stiffness materials, the shape of plastic bottles must be designed to enhance the rigidity and load resistance of plastic bottles. (4) Since most plastics have a notch sensitivity, plastic bottles are prone to cracks and cracks at sharp corners, the root of the mouth thread, and the neck, etc. These parts should be designed with rounded corners. For the intersection of rectangular plastic bottles, it is necessary to support most of the load of the plastic bottle, so locally increasing the wall thickness there is also conducive to improving the rigidity and load resistance of the plastic bottle. We specialize in producing and supplying high quality plastic bottle products in China for safe use in cosmetic liquid packaging. Is an excellent Plastic Bottle Manufacturer and cosmetics packaging company. Check the plastic bottle product packaging, welcome to visit: https://www.ruichangpacking.com/product/airless-bottle |
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