Product group: Plastic blister
A plastic processing technology, the main principle is to heat the flat plastic hard sheet material to soften it, then use vacuum to absorb it on the surface of the mold, and cool it to form. It is widely used in plastic packaging, lighting, advertising, decoration and other industries.
The main advantages of blister packaging are that it saves raw and auxiliary materials, is light in weight, convenient to transport, has good sealing performance, and meets the requirements of environmentally friendly green packaging; it can package any special-shaped products without additional cushioning materials for packing; the packaged products are transparent and visible, good appearance, easy to sell, and suitable for mechanized and automated packaging, convenient for modern management, saving manpower, and improving efficiency.
Thermoforming process flow chart General process:
plastic sheet-cutting-sheet fixing-heating-forming-demoulding-edge removal-finished product
[Material requirements for blister molding]:
1. Blister molding can only produce products with relatively uniform wall thickness (generally, the chamfer is slightly thinner), and cannot produce plastic products with very different wall thicknesses.
2. The wall thickness of blister molding is generally in the range of 1 to 2mm or thinner (the most commonly used thickness of blister packaging for small packages is 0.15 to 0.25mm).
3. The stretch of blister molded products is subject to certain restrictions. The diameter and depth ratio of blister molded plastic containers is generally not more than 1, and in extreme cases, it should not exceed 1.5.
4. The dimensional accuracy of blister molding is poor