How to choose high-quality and cheap transparent blown film masterbatch
- 2020-06-24-

How to choose high-quality and cheap transparent blown film masterbatch

The performance and cost of the transparent blown film masterbatch mainly depend on the carrier resin. Usually, the carrier resin generally contains 10% to 20% depending on the purpose of the masterbatch. The carrier resin used in the polyolefin filling masterbatch should have good compatibility with the filled plastic matrix resin. Considering this aspect, the base resin is generally selected as the carrier resin. In addition, the melting point and melt fluidity of the carrier resin should be considered when selecting the carrier of the filled masterbatch, and the melting point of the carrier resin should not be higher than the matrix resin. At present, most companies use polyethylene (PE), polypropylene (PP), and resins that match polyethylene and polypropylene with equivalent melt index.

Transparent blown film masterbatch

If the masterbatch is produced using chips or recycled materials, it may contain contaminants or other non-meltable polymers. This will cause some unpredictable troubles that are difficult to restrain, and waste consumers' time and raw materials. At this time, the base resin can be used to produce high-quality masterbatch, which has good compatibility during the melting process. Good masterbatch can use LLDPE, LDPE, HDPE, PP, PS, SAN, PA and other materials to produce deformation caused by molding shrinkage, so the mold design must be modified.

Among them, it is important to pay attention to making the product wall thickness consistent. Sometimes, as a last resort, we have to measure the deformation of the product and trim the mold in the opposite direction for correction. Resins with greater shrinkage are generally crystalline resins (such as polyoxymethylene, nylon, polypropylene, polyethylene and PET resins) than non-crystalline resins (such as PMMA resin, polyvinyl chloride, polystyrene, ABS resin, etc.) And AS resin, etc.) deformation is large. In addition, since the glass fiber reinforced resin has fiber orientation, the deformation is also large.