What are the changes in the requirements of environmentally friendly PP materials for PP bottle preform mold?
Publish Time: 2024-07-19
With the continuous improvement of environmental awareness, environmentally friendly PP materials are increasingly used in bottle preform manufacturing. This also brings a series of new requirements and changes to PP bottle preform mold.
First of all, environmentally friendly PP materials usually have different flow properties and shrinkage characteristics. This requires the flow channel design of PP bottle preform mold to be more precise to ensure that the material can fill the cavity evenly and smoothly to avoid defects such as short shots and lack of material. At the same time, the shrinkage rate of the material needs to be more accurately predicted and controlled to ensure the dimensional accuracy of the bottle preform.
In terms of the structure of PP bottle preform mold, since environmentally friendly PP materials may have different sensitivities to temperature and pressure, PP bottle preform mold needs to have a more optimized heating and cooling system. An efficient cooling system can speed up the curing speed of the bottle preform and improve production efficiency, while also helping to reduce energy consumption and waste of materials.
Environmentally friendly PP materials often have higher requirements for the surface quality of PP bottle preform mold. The surface of PP bottle preform mold needs to be smoother to reduce friction resistance during preform molding and reduce the difficulty of demolding, thereby reducing defects and scratches on the surface of the preform and improving the appearance quality of the product.
In addition, the exhaust system of PP bottle preform mold also needs to be improved. Good exhaust can timely discharge the gas in the cavity of PP bottle preform mold, avoid the formation of bubbles or gas marks on the preform, and ensure the integrity and quality of the product.
There are also new challenges for the durability and maintainability of PP bottle preform mold. Since environmentally friendly PP materials may have certain corrosive or abrasive properties, PP bottle preform mold needs to adopt more wear-resistant and corrosion-resistant materials and coatings, and easy to maintain and repair, so as to extend the service life of PP bottle preform mold and reduce production costs. For example, when using biodegradable environmentally friendly PP materials, PP bottle preform mold needs to adapt to its special processing requirements, such as lower processing temperature and shorter molding cycle.
In short, with the application of environmentally friendly PP materials, PP bottle preform mold faces new requirements and changes in runner design, temperature control, surface treatment, exhaust system, durability, etc. PP bottle preform mold manufacturers need to continuously innovate and improve technology to meet the market demand for environmentally friendly preform production.
