7 Types Of Mold Release Agent Performance

• Posted by ritchie silways August 17, 2020 - Filed in Business - #Mold Release Agent  - 1,746 views

   

  A   Mold release agent   is a chemical substance used to prevent other materials from adhering to the surface. It can provide solutions for processes involving demolding, die-casting demolding, plastic demolding, adhesive demolding, and tire and web demolding.

  The release agent provides an important barrier between the molding surface and the substrate, thereby facilitating the separation of the cured part from the mold. If there is no such barrier, the substrate will fuse to the mold surface, resulting in cleaning difficulties and a sharp drop in production efficiency. Even if mold release agents are used, factors such as improper application or improper selection of mold release agents can have a huge impact on the quality and consistency of the final product.

  
  Cosolvent
  Reducing VOC and eliminating the health and safety hazards caused by solvent-based release agents are the main driving forces for the development of co-solvent release agents. Co-solvent release agent combines the advantages of a solvent-based system and the safety of a water-based release agent

  Semi-permanent
  One of the key attributes of a release agent is its durability: how long it must last before reapplication. The semi-permanent release agent does not need to be reused in each cycle of the molding operation, and even works better when it is not over-coated on the mold surface.

  Depending on the required process, material and application method, how much release can be achieved before reapplication is required. In order to achieve multiple releases per application, it is usually necessary to apply a semi-permanent release coating to a clean, dry surface that is free of dust, rust, dirt or previous coatings. This allows the release agent to be properly bonded to the mold and mold tools, thereby improving the durability and life of the coating.

  
  Sacrificial
  The sacrificial coating must be applied before each cycle of the molding operation and is therefore considered labor-intensive. Most molders prefer semi-permanent coatings to sacrificial coatings, especially when molding rubber and plastic parts. These coatings contain less solid content, so the service life is less than that of semi-permanent coatings.

  Water-based or solvent-based
  The mold release agent can be water or solvent type, the use of both will depend on the personal preference of the molder, factory safety regulations, transportation costs of hazardous materials, state, local or federal regulations and/or the needs of mold release coatings Drying time.

  Water-based
  Water-based mold lubricants have been used for about 40 years. All die casting machines are designed using WBD.The drying speed of water-based release coatings is generally slower than that of solvent-based release coatings, but there is less concern about health and safety. Water-based mold release agents are inherently non-flammable and can meet most plant safety goals, so transportation costs are low.

  
  Solvent type
  Solvent-based anti-stick coatings dry almost immediately, but there are serious health and safety hazards. If there is no properly ventilated work area, the fumes from solvent-based release agents can be dangerous. Most solvents used in mold release agents are flammable.

  
  Non-flammable solvent
  Non-flammable release agents can be used, which are generally classified as combustibles.

  
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