Blister Process Vs Injection Process

Blister process is a method of softening thermoplastic sheet after heating, and forming the required shape on the mold surface through negative pressure adsorption. This process is suitable for the production of small and medium-sized, thin-walled, complex shape products, such as packaging boxes, display shelves, models, etc.
The blister process has the following advantages:
1. Lower cost
The blister process does not require large injection molding machinery and equipment, so the investment cost is low.
2. Short production cycle
The production cycle of the blister process is relatively short, and the product can be quickly produced.
3. Strong plasticity
The blister process can produce complex shapes and details, with a high degree of design freedom.
However, there are some limitations to the blister process:
1. Limited material selection: The blister process is mainly suitable for thermoplastic sheets, and is not suitable for other types of plastic materials.
2. Thickness limitation: The blister process is suitable for thin-walled products, and may not be suitable for thicker products.
3. Low production efficiency: Because the blister process needs to be made piece by piece, the production efficiency is relatively low.
Second, injection molding process
In contrast, the injection molding process is a method in which thermoplastic particles are heated and melted and then injected into a mold at high pressure to form the desired shape. The injection molding process is suitable for the production of large, thick wall, high-precision products, such as auto parts, home appliance shell, etc.
The injection molding process has the following advantages:
1. Wide selection of materials
The injection molding process is suitable for many types of plastic materials, such as polypropylene, polyethylene, polycarbonate, etc.
2. High production efficiency
The injection molding process can achieve continuous production and high production efficiency.
3. Stable product quality
The injection molding process can achieve high-precision product production, and the product quality is stable and reliable.
However, there are some limitations to the injection molding process:
1. High investment cost: injection molding process requires large injection molding machinery and equipment, and the investment cost is high.
2. Long production cycle: The production cycle of the injection molding process is relatively long, and the time of mold production and debugging needs to be considered.
Iii. Summary
To sum up, the choice of blister process or injection molding process needs to be determined according to the specific product requirements and production conditions. If you need to make small and medium-sized, thin-walled, complex shape products, and have high requirements for cost and production cycle, you can choose the blister process; If you need to make large, thick wall, high-precision products, and have high requirements for product quality and production efficiency, you can choose the injection molding process. When choosing, it is also necessary to consider material selection, investment cost, production cycle and other factors, weigh the pros and cons comprehensively, and choose the most suitable plastic processing method.