Diatomaceous Earth Anti‑Blocking Agent is porous diatomite‑based mineral anti‑blocking additive as direct replacement for Celite 263. When incorporated into polyolefin blown‑film masterbatch or resin compound, the rigid porous mineral particles create micro‑roughness on film surfaces. It effectively decreases the mutual adhesion of stacked film layers, provides stable film‑opening property and facilitates unwinding and processing of blown polyolefin packaging films.
Product Overview Diatomaceous Earth Anti‑Blocking Agent (CAS 61790‑53‑2, Celite 263 Equivalent) is refined porous diatomaceous earth designed for polyolefin blown‑film manufacturing. During extrusion and blown‑film forming, fine rigid mineral particles are uniformly dispersed inside the polymer matrix. After film cooling, these hard mineral particles protrude slightly to form micro‑roughness on both inner and outer film surfaces. The micro‑relief structure reduces direct contact area between adjacent film layers and inhibits vacuum‑induced sticking. This mineral anti‑blocking additive improves unwinding behaviour of rolled packaging film without severely impairing film transparency. It is widely applied for PE and PP blown‑film production in film and masterbatch plants.
Key Features ‑ Porous rigid mineral particle creates micro‑roughness to prevent film surface blocking ‑ Delivers stable opening performance for rolled polyolefin blown packaging films ‑ Good thermal stability under polyolefin film extrusion processing temperatures ‑ Suitable for incorporation into anti‑block masterbatch or direct resin compounding ‑ Direct functional equivalent grade for Celite 263 diatomaceous‑earth anti‑block additive
Typical Technical Properties ‑ Chemical Type: Refined natural diatomaceous earth ‑ Appearance: Off‑white fine free‑flowing powder ‑ Particle Size: Refer to TDS ‑ Bulk Density: Refer to TDS ‑ Oil Absorption Value: Refer to TDS
Applications ‑ Blown‑film production: Anti‑block opening additive for PE and PP packaging blown film ‑ Polyolefin masterbatch plant: Raw mineral material for anti‑blocking plastic masterbatch ‑ Flexible packaging material workshop: Functional filler for agricultural and shopping‑bag film ‑ Polymer compounding: Mineral processing aid for thin polyolefin film formulations
Processing Recommendation Feed diatomaceous earth anti‑blocking powder during twin‑screw extrusion for masterbatch preparation, or meter directly into the blown‑film extruder. Adjust addition dosage carefully to balance anti‑blocking effect and film transparency. Complete lab extrusion trials before large‑scale film production.
Storage & Handling Store in cool, dry warehouse and avoid moisture. Reseal packaging after opening. Wear dust‑proof mask and protective gloves when handling fine mineral powder.

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