In the injection molding industry, the plastic mixer is one of the key equipment to ensure uniform mixing of raw materials and stable production. Choosing a suitable mixer can improve production efficiency and ensure product quality. However, there are many types of mixing equipment on the market, and the most common ones are vertical plastic mixers, volumetric doser and gravimetric blener. This article will introduce these three types of equipment in detail and help you make the right choice in injection molding production.
- Vertical plastic mixer: the basic choice for efficient mixing
Vertical plastic mixer is one of the common equipment in the injection molding industry, mainly used for rapid mixing of various granular materials. It uses high-speed rotating spiral blades to lift the plastic raw materials from the bottom to the top and then drop them again to achieve multiple cycles of mixing.
Applicable scenarios:
Suitable for rapid mixing of large quantities of plastic raw materials.
Used in production processes with relatively simple formulas, such as basic plastic granule mixing.
When short mixing time and high efficiency are required in production, vertical color mixers are ideal.
Advantages:
Simple structure and easy operation and maintenance.
Fast mixing speed, suitable for large-scale production.
The cost is low and suitable for small and medium-sized enterprises.
Considerations:
Vertical plastic mixers may produce uneven dead corners when mixing, especially when handling sticky materials, so pay attention to the fluidity of the raw materials when choosing.
- Volumetric doser: the key to accurately control color difference
Volumetric doser is used to accurately control the amount of masterbatch added during plastic processing. It ensures the consistency of product color by evenly adding a preset amount of masterbatch or additives to the plastic substrate.
Applicable scenarios:
Products that need to strictly control color consistency and avoid color difference problems, such as automotive interiors, home appliance housings, etc.
Suitable for precision production processes using masterbatches or functional additives.
Advantages:
Ensure color uniformity by accurately controlling the proportion of masterbatch addition and avoid errors caused by manual addition.
Improve production efficiency and reduce scrap rate due to color difference.
Considerations:
The selection of the volumetric doser should be based on the color requirements of the product and the amount of masterbatch added to ensure that the equipment can meet the mixing requirements of multiple colors or multiple additives.
- Gravimetric blender: a tool to ensure accurate raw material ratio
Gravimetric blender is a high-precision device, often used in automated production lines, to accurately control the proportion of various raw materials and ensure that different materials are mixed according to the predetermined ratio. This equipment is often used in conjunction with an injection molding machine or extruder to ensure the accuracy of each feeding.
Applicable scenarios:
Processes that require strict control of the proportion of multiple materials to ensure stable quality of the final product, such as the production of high-demand engineering plastics and special functional plastics.
Suitable for situations where precise control of costs and material usage is required in large-scale production.
Advantages:
Extremely high ratio accuracy to ensure consistency of each batch of products.
High degree of automation, reduced manual intervention, and reduced production costs.
Can effectively avoid product defects caused by imbalanced raw material ratios.
Considerations:
The selection of gravimetric blender needs to take into account the needs of the production line to ensure that its weighing range and accuracy can meet the ratio requirements of different materials. In addition, attention should also be paid to the ease of operation and maintenance of the equipment.
Conclusion
In the injection molding industry, choosing the right plastic mixer is crucial to production efficiency and product quality. Vertical plastic mixers are suitable for quickly mixing large quantities of materials, volumetric doser ensure color consistency, and gravimetric blender are key equipment for achieving accurate proportions. When selecting, you need to choose the most suitable mixing equipment based on specific production needs, material properties, and process requirements to ensure a smooth and efficient production process.
