Competitive price!16cav 28mm PCO1881 and 1810neck 35g PET preform mould for plastic bottle

The particularity of the preform mold for cosmetic bottles is mainly reflected in the following aspects:
1. **High precision requirements**:
Cosmetic bottles have extremely high requirements for the accuracy of appearance and size to ensure the perfect fit between the bottle body and the bottle cap, the beauty of the overall shape, and the accurate presentation of the identification information. The preform mold must be able to accurately control the size and shape of the preform to ensure that the molded bottle meets the design specifications. For example, some high-end cosmetic bottles may require fine patterns, text or special shapes on the bottle body, which requires the mold to have extremely high processing accuracy and stability to accurately replicate these details during the injection molding process.
2. **Complex structure design**:
Cosmetic bottles have various shapes, which may include complex curves, grooves, protrusions and other structures to adapt to different product positioning and consumer needs. The preform mold needs to have the ability to design complex structures and ensure that these structures will not be deformed or damaged during the production process due to stress concentration, uneven material flow and other problems. For example, some cosmetic bottles may need to design unique bottle mouth shapes, bottleneck curvatures or bottle body textures, which poses higher challenges to the structural design and manufacturing process of the mold.
3. **High durability requirements**:
Since the production batches of cosmetic bottles are usually large, the preform mold needs to withstand long-term high-frequency use. Therefore, the material selection and processing technology of the mold are crucial, and it must have good wear resistance, corrosion resistance and fatigue resistance to ensure the service life of the mold. Generally speaking, high-quality mold steel can improve the hardness and durability of the mold, reduce wear and deformation, and thus extend the service life of the mold after heat treatment, surface coating and other process treatments.
4. **Special material adaptability**:
Cosmetic bottles may use some special plastic materials, such as PET, PE, PP, etc., which have different physical properties and processing characteristics. The preform mold needs to be designed and adjusted according to the fluidity, shrinkage, thermal stability and other characteristics of the selected material to ensure that the plastic molten material can flow evenly and fully fill in the mold, and maintain accurate size and shape after cooling. For example, PET material has good fluidity, but relatively large shrinkage. These factors need to be taken into account when designing the mold, and the cooling system and exhaust system should be reasonably set to avoid defects such as shrinkage and warping of the product.
5. **Fast mold change and efficient production requirements**:
In modern production lines, in order to improve production efficiency and reduce costs, preform molds need to have the ability to change molds quickly. The design of the mold should be easy to install and disassemble, while ensuring stability and precision after mold change. In addition, the structure of the mold should be as simple and reasonable as possible to reduce failures and maintenance time during the production process and achieve efficient continuous production. For example, a mold with a modular design can easily replace damaged parts or upgrade and transform them, thereby improving production flexibility and efficiency.
6. **Environmental protection and sustainability requirements**:
With the continuous improvement of environmental awareness, cosmetic preform molds also need to meet environmental protection and sustainability requirements. In the design and manufacturing process of the mold, the waste of materials and energy consumption should be minimized, recyclable materials should be selected, and the production process should be optimized to reduce the impact on the environment. For example, advanced processing technology and equipment should be used to improve material utilization and production efficiency; during the use of the mold, maintenance and care should be strengthened to extend the service life of the mold and reduce the generation of waste.