Products

Product Center

‹

›

antiblocking agents,plastic films,interlayer adhesion,film layers,anti-yellowing

Anti-Blocking Agents

Basic Information

"Blocking" in plastic films refers to the adhesion or interlayer adhesion during production or long-term storage; this issue occurs frequently in highly transparent, thin polyolefin (PE, PP) and polyester (PET) films.
Without effective countermeasures, this interlayer adhesion will trigger a range of defects throughout film production and final application.
Incorporating a small amount of Boruistal silica anti-blocking agent into the film formulation creates surface irregularities—specifically, micro-roughness—which reduces the contact area between film layers and allows air to penetrate between them, thereby lowering adhesion forces and the coefficient of friction.
Furthermore, BORUISTAL silica forms microscopic gaps between film layers, which accelerates the migration of slip & antistatic additives to the film surface.

Can’t Find the Product You Are Looking For?

Kindly share your product requirements, technical specifications and target application field. Our professional technical team will respond to you within 24 hours.

Product Features

· Synthetic amorphous silica with stable chemical properties and food-safe composition.
· Ultra-high purity and ultra-low residual metals, delivering outstanding anti-yellowing performance.
· Particle size, porosity and bulk density can be precisely customized. Our extensive product portfolio offers tailor-made grades to fit your production requirements and achieve optimal performance.
· Its refractive index closely aligns with polyolefin and polyester substrates, barely compromising optical performance and maintaining excellent film clarity.
· Features excellent dispersibility; it distributes evenly throughout polyolefin and polyester matrices to form fine surface micro-texture without migration, and delivers superior printability and robust ink anchorage for finished films.

Product Specifications

Item Series 08 Series 11 Series 03
Silica Content (%) ≥98 ≥98 ≥98
Average Particle Size (μm) 3-6 2-6 3-10
Heating Loss at 105℃ (%) ≤3 ≤3 ≤3
Bulk Density (g/cm³) 0.2-0.4 0.15-0.2 0.2-0.4
Customization and Collaboration

Anti-blocking efficiency and transparency are the properties of greatest concern to plastic film manufacturers. We are committed to providing customers with high-quality, suitable Boruistal silica products that ensure excellent anti-blocking performance and superior optical clarity for their end products, thereby meeting their specific needs.
We offer customized silica anti-blocking agents tailored to specific plastic materials and formulations; please contact us for further details.

Contact Us
Submit
Discover More Products