Granular Hot Melt Glue Production Line Equipments Delivery | JCT Machinery

1. Raw Material Mixing and Reaction

Chemical Reaction: Raw materials of hot melt glue usually include polymers, tackifiers, antioxidants, plasticizers, etc. These ingredients need to be evenly mixed in the reactor by heating and stirring, and form a colloidal structure or other required chemical properties through chemical reactions.

Polymerization and Croll-linking Reactions: For example, in the production of some hot melt glue, it may be necessary to polymerize monomers into polymers through polymerization reactions, or to enhance the heat resistance, bonding strength and other properties of hot melt glue through cross-linking reactions. Reactor ensures the uniformity and stability of reaction conditions through precise temperature control and stirring.

2. Temperature Control and Vacuum Degassing

Temperature Control: Precise temperature control is required during the reaction process. Reactor is usually equipped with a heating device (such as electric heating, steam heating, etc.) to maintain the required reaction temperature. Too high or too low a temperature will affect the reaction efficiency or lead to the generation of undesirable by-products.

Vacuum Degassing: In the production process of some hot melt glue, gases or solvents will be generated during the reaction. A vacuum system is required to remove these substances to prevent bubbles or impurities from affecting the quality of the glue. Vacuum degassing helps improve the purity and consistency of the product.

3. Control of Reaction Time

The reaction time in reactor is crucial to the properties of the final product. Too long or too short a reaction time will affect the properties of hot melt glue, such as adhesion, heat resistance and and ductility. Reactor can accurately adjust the reaction time through an automated control system to ensure the quality of each batch of hot melt glue.

1. Material Mixing and Homogenization

Uniform Mixing: In the production process of hot melt glue, raw materials need to be uniformly mixed. Sigma mixer uses its unique stirring blade structure to produce a strong shearing effect, so that different materials can be evenly dispersed to avoid material aggregation or unevenness.

High Shear Force Mixing: The design of sigma mixer can thoroughly mix various raw materials in a short time through strong shearing and kneading to ensure the performance consistency of the finished hot melt glue.

2. Heating and Plasticizing

Heating Function: Sigma mixer is usually equipped with a heating system, which softens or melts certain polymers through heating and shearing to facilitate mixing and further processing. Heating not only helps to increase the fluidity of the material, but also helps to increase the reaction rate between the raw materials.

Plasticizing Effect: Some hot melt glue raw materials may be hard or difficult to process at high temperatures. Sigma mixer can completely plasticize these raw materials through heating and shearing to achieve the ideal processing state.

3. Removal of Bubbles and Impurities

Bubble Removal: When sigma mixer is working at high temperature, bubbles or entrained air may be generated. The strong stirring and high temperature of sigma mixer help to remove bubbles from the material, avoiding the appearance of pores or bubbles on the surface of the glue, which affects the quality and performance of hot melt glue.

Impurity Removal: When sigma mixer is working, it also helps to remove insoluble matter or impurities in some raw materials to ensure that the granular hot melt glue produced have better transparency and quality.

4. Granulation and Cooling

Granulation: During the kneading process, the materials can be mixed evenly and made into granules or blocks through different forms of discharge ports, which is convenient for subsequent packaging and transportation.

Cooling Function: Sigma mixer can also gradually cool the material by controling the temperature, helping the material to maintain appropriate hardness and granular state when leaving the machine body.