We all know that there are many ways to process plastics, such as injection molding, blow molding and extrusion molding. Different processing methods are mainly selected based on the characteristics of the raw materials and product structure.
First of all, the raw materials used in these three molding methods are all thermoplastics. Its characteristic is that it has plasticity at a certain temperature. Once cooled, it can achieve a rapid solidification effect and can be reprocessed into new ones after recycling. .
The first molding method is injection molding. In fact, in our daily life and work, we use various injection molded products, such as water cups, storage boxes, chairs, and our remote controllers. We use various injection molding products almost every day. There are various injection molding products, but do you understand its principle?
In fact, the process of injection molding is to feed the raw material into the injection molding machine, heat and soften it, then pressurize it through the rotation of the screw rod, and inject it into the mold. After the material completely fills the mold, gradually cools and molds, then use an ejector pin to push the mold. The product in is launched, so that a plastic product can be manufactured.
The second type, extrusion molding, as we can understand from its name, is to squeeze out the raw materials by applying a certain amount of force. As for why extrusion is needed, the main reason is because the fluidity of the material is not good. Only through extrusion can we achieve continuous production, and the efficiency of production will be higher than ordinary ones. The water pipes, plastic rods, plastic plates and special profiles we use for home decoration are formed by extrusion. produced.
Similar to the processing method of injection molding, extrusion molding first requires the raw materials to be fed into the machine to be heated and softened, and then the material is extruded through a screw or plunger, allowing it to be shaped through the machine head mold. After the product passes through the mold It will continue to extend and be shaped after cooling. Finally, the product will be cut according to the required length to get the product we need.
But did you know that extrusion molding will face various challenges during foaming, such as the way the extruder structure is combined, how to handle various foaming agents, different granulation methods, cooling and sealing, etc. Once the problem is not handled properly, it will affect the performance of the foam material and even cause safety production risks.
Plastic auxiliary equipment plays a crucial role in the manufacturing of plastic products. Equipment such as hopper dryer, gravimetric blender, central feeding system, plastic crusher, and volumetric doser not only enhance production efficiency but also directly impact the quality and performance of plastic products. Here’s a detailed explanation of the importance of these devices in plastic product manufacturing:
Plastics need to be thoroughly dried before processing to prevent issues like bubbles, defects, or reduced strength in the final product due to excess moisture. hopper dryer remove moisture from plastic pellets effectively through methods such as hot air circulation or vacuum drying, ensuring the required dryness level. This stabilizes the plastic pellets, improving the physical properties and appearance of plastic products during molding.
Accurate ingredient proportioning is critical for product performance and stability in plastic manufacturing. gravimetric blender precisely measure and blend various raw materials according to formula ratios automatically, ensuring accurate material proportions for each batch. This eliminates human errors, enhances production line stability, and maintains product consistency, thus ensuring quality and cost control.
During plastic processing, material pellets need to be transported from storage containers to processing equipment efficiently. central feeding system efficiently and steadily transport plastic pellets into conveying pipelines, ensuring continuous material supply. Their high conveying speed and precise control enhance production efficiency and process continuity and stability.
The recycling of plastic waste is essential for environmental sustainability and resource conservation. plastic crusher break down discarded plastic products into recycled plastic pellets or powders for further processing. Using crushers to recycle plastic waste reduces environmental pollution and production costs while increasing resource utilization.
volumetric doser are used for coloring and dyeing plastic products by uniformly mixing pigments or color masterbatches with plastic pellets. This ensures that plastic products have consistent and attractive colors. The volumetric doser matching and control capabilities of color dosers enable plastic products to exhibit diverse and appealing appearances, enhancing market competitiveness.
In summary, hopper dryer, gravimetric blender, central feeding system, plastic crusher, and volumetric doser are indispensable in plastic product manufacturing. These auxiliary devices not only improve production efficiency and reduce costs but also directly influence the quality, stability, and market competitiveness of plastic products. They are essential key equipment in the modern plastic processing industry.
So, now you know about the plastic in our daily life.
If you are interested in our products, welcome to browse our youtube channel
