Vacuum forming of the advantages and disadvantages
Any processing to determine whether the process succeeded, with the alternative processing methods, using such methods produce products of capital is appropriate; or products of these two methods produce identical capital, but using this method improved quality of products produced. In many applications, injection molding or blow molding and vacuum forming are competing.
But in terms of packaging technology, unless it is used cardboard as a packaging material, or vacuum forming technology is no other processing methods can compete with the. The main advantage of vacuum forming is its engineering economy. Molding compound sheet, foam sheet and print sheet products, the appropriate changes to change the mold to replace the vacuum forming machinery. Thin-walled products can be high melt viscosity of the sheet vacuum forming and injection of the same thickness you need to lower the melt viscosity of the pellets. For a small amount of plastic parts, enabling the vacuum forming mold capital is another advantage, while large quantities of parts, products can achieve a very thin wall thickness and vacuum forming machine is very beneficial to high-output ratio.
Vacuum forming to produce a minimum of packaging material parts are tablets or watch with a battery, can produce very large products, such as 3 ~ 5m long garden pond. The thickness of the molding material from 0.05 ~ 15mm, for the foam, the thickness can reach 60mm. Or any kind of thermoplastic materials with similar properties can be vacuum forming process.
Vacuum forming material is used as 0.05 ~ 15mm thickness of the sheet, the sheet is obtained with the granules or powder of semi-finished. Therefore, compared with injection molding, vacuum forming raw materials will increase the additional capital.
In the vacuum forming sheets, need to be cut, which will produce scrap. These leftover crushed, mixed with the original material can be made of sheet again.
In vacuum forming, the sheet surface with only one contact with vacuum forming mold, so there is only one surface and vacuum forming mold geometry is consistent, the surface contours of the other products are obtained by the distraction.
In the plastic processing field, vacuum forming is that a great potential for development of processing methods. It uses molding, plastic packaging for various fields. Vacuum forming is also a need for skilled manipulation of the processing methods and experience. Today, through the simulation process with the necessary expertise, vacuum forming has become technically controlled, and a processing method can be repeated.
In recent years, in the vacuum forming process produces scrap recycling has become increasingly important. Today, through the broken bits and pieces and mixed to native materials for recycling has become a process. Discarded plastic molded products, such as packaging materials, parts or projects, and their recycling is possible in many conditions, but some are still to be developed. The current recall is available for some chemical materials and energy materials. For recycling to be, one must in the process of ecological and conservation of mechanism.
Vacuum forming products with low prices, high production efficiency, shape and color matching free, corrosion-resistant, light weight and power to do edge performance advantages, such as stationery, toys, daily necessities, hardware, electronic products, food, cosmetics and other products, packaging has been developed to billboards, automotive and industrial parts, building materials, safety helmets, washing machines and freezers lining, turnover box, and the application of agricultural products and other products.
-The news from vacuum-thermoforming.com.