At present, the world economy is changing, and the domestic industrial structure is in a stage of continuous upgrading. In the current process of industrial upgrading, some low-value-added enterprises are facing many challenges and various difficulties due to various operating difficulties. So, what are the characteristics of plastic bottle flip-top caps?

　　1. When designing extruded plastic bottles, if the material is high-density polyethylene or polypropylene, the cross-section should be rectangular or oval. If the material is low-density polyethylene or other flexible plastic bottles, the cross-section should be circular. This helps to squeeze the contents out of the bottle. The plastic parts used in conjunction with the bottle mouth are mainly plastic caps and sealers. The design of the plastic bottle mouth should focus on how to make the plastic bottle mouth fit better with the cap and sealer. The bottom of the bottle is the weakest part of the mechanical properties of the plastic bottle. Therefore, the bottom of the plastic bottle is generally designed to be concave. The corners of the bottle and the recessed parts are all rounded. To facilitate the stacking of plastic bottles and increase the stacking stability of plastic bottles, the bottom should be designed with internal grooves.

　　2. When labeling the surface, the surface of the label should be flat. A "frame" can be designed on the surface of the plastic bottle so that the label can be positioned accurately and does not need to be moved. During the blow molding process, the first contact portion of the parison expansion always tends to be the first hardened portion. Therefore, the wall thickness of this part is also relatively large. The corner portion of the edge is the post-contact portion of the parison inflation, which has a smaller wall thickness. Therefore, the edges and corners of plastic bottles should be designed as rounded corners. Changing the shape of the surface, such as being relatively thinner in the middle, and adding circumferential grooves or ribs on the surface, can improve the rigidity and bending resistance. Longitudinal grooves or ribs eliminate deflection, sagging, or deformation under long-term loading. plastic bottle flip-top cap

　　3. The printing surface is the part where consumers focus their attention. The printing surface should be smooth and continuous. If handles, grooves, ribs, and other structures are included, care should be taken in the design not to inconvenience the printing operation. The oval bottle has higher rigidity, but the mold manufacturing cost is higher. Therefore, to ensure rigidity, in addition to choosing materials with high rigidity, shape design should also be adopted to enhance the rigidity and load-bearing strength of plastic bottles.

　　4. Since most plastics are notch sensitive, plastic bottles are prone to cracks and cracks at the sharp corners, the root of the mouth thread, and the neck, so these parts should be designed with rounded corners. For the turning point of the rectangular plastic bottle, most of the load of the plastic bottle needs to be supported. Therefore, locally increasing the wall thickness of this place is also conducive to improving the rigidity and load-bearing strength of the plastic bottle.

　　Plastic bottle flip-top cap: What is the difference between a plastic bottle and a glass bottle?

　　1. Different properties: Plastic is a kind of polymer synthetic material with various types. Glass bottles can be made into emerald green, dark green, light cyan, and amber glass through the use of metal ion colorants.

　　2. Different characteristics: glass bottles are traditional packaging products, characterized by bright and transparent, good chemical stability, airtight, and easy to shape, but relatively heavy and easy to break. Plastic bottles have good mechanical properties and are light in weight, making them easy to store, transport, and use.

　　3. Different advantages: cosmetic glass bottles have good airtightness, stable chemical properties, and high-grade materials, which can effectively ensure that the contents will not deteriorate for a long time. Ideal for cosmetic packaging. Plastic bottles have good air permeability, good sealing, and high transparency.

　　What are the production processes of plastic bottle flip top caps?

　　1. Extrusion blow molding process, that is, adding plastic raw materials into the extruder, heating, melting, plasticizing, and extruding the molten parison, then putting it into the bottle mold for blow molding, cooling, and setting, ejecting the mold, and trimming the edges to obtain the finished product.

　　2. Injection-stretch blowing process, that is, the plastic raw material is injected into a tubular parison through an injection molding machine, and then put into a bottle mold for stretch-blow molding, and the finished product is obtained after cooling.