The difference between mastication and kneading

Basic concepts and process principles of 1.

Plastication (Molding) and kneading (Compaction) are two common processes in the process of material preparation. The main goal is to make the material enter the plastic state through heating and physical action, so as to form.

1. Basic concepts of mastication:

• plastication is a process by heating and plasticizing, usually used for plastic, rubber and other materials forming.
• During mastication, the material needs to be melted and cooled at a specific temperature and time to form the desired shape.
• Common mastication equipment includes melt molding presses and injection molding machines.

1. The basic concept of kneading:

• holding is a technology that compresses materials into shapes by means of physical compression and vibration.
• Commonly used in the production of ceramics, plastics and composite materials.
• Holding does not require heating, but rather compresses the material into shape by mechanical pressure.

2. process steps and operating methods

there are significant differences between mastication and kneading in terms of process steps and methods of operation:

1. process steps of mastication:

• raw material preparation: Melt the raw materials into a molten state.
• Mold preparation: Prepare a regular mold.
• heating forming: Inject the molten material into the mold, and heat the material into a plastic state.
• cooling and forming: Remove the molded product after cooling.

1. Process steps of kneading:

• raw material preparation: Mix the raw materials evenly.
• vibration forming: Put the raw materials into the kneader, and compact the material into a specific shape by vibration.
• Raw material separation and treatment: The kneaded mixture is separated and further processed as required.

and application areas

there are also significant differences between mastication and kneading in the field of application:

1. application fields of mastication:

• plasticizing is widely used in the production of plastics, rubber, composite materials, etc.
• Commonly used in the manufacture of injection molds, packaging materials and other regular shape plastic products.

1. Application fields of kneading:

• holding is often used in the preparation of ceramic products, such as ceramic cups, bowls, etc.
• It is also used for the production of semi-finished products of certain plastics and composite materials, especially when precise shapes are not required.

3. selection and application suggestions

when selecting a process, it is necessary to decide whether to use mastication or kneading according to specific material and product requirements:

1. material Type:

• if the material is thermoplastic or rubber, mastication is suitable.
• If the material is ceramic particles or some semisolid material, kneading is suitable.

1. Product shape and accuracy:

• if a high degree of shaping and precise shape is required, mastication is selected.
• If rough forming is required or the shape is not strict, kneading is more appropriate.

1. Production efficiency and cost:

• plastication usually has higher production efficiency and better forming control.
• The initial investment is low, but the production efficiency may be low, suitable for small batch production.

4. Summary

plasticizing and kneading are two important forming processes in the chemical industry. Although their principles and operating methods are different, they have their own emphasis on application fields. Choosing the appropriate process method can effectively improve production efficiency, product quality and cost-effectiveness. In actual production, it is recommended to make the best choice according to specific materials and product requirements, combined with process characteristics and equipment conditions.