Comparative blown film properties with Optibloc® 25 clarity antiblock and Diatomaceous Earth.
Optibloc® 25 clarity antiblock produced equal or better blown film properties when replacing DE in LLDPE and LDPE blown film resins. The lower abrasiveness of Optibloc® 25 clarity antiblock compared to DE will result in reduced process-equipment wear over the long term.
See the examples below for the film properties and click here to view the data on improved melt fracture elimination with Specialty Minerals Inc. (SMI) talc-based antiblocks.
Optibloc® 25 antiblock replacing DE in 1 MI LLDPE

Optibloc® 25 antiblock replacing DE in 1 MI LDPE

Additional information and data on replacing diatomaceous earth antiblocks with SMI talc-based products can be read by clicking here. Click here to download an introduction to antiblocks and SMI talc-based antiblocks in LLDPE films.
Learn more:
- Specialty Minerals antiblocks
- What is an antiblock?
- Selecting a talc-based antiblock
- Formulating High Performance LLDPE Blown Films With Optibloc® High Clarity Antiblocks – Introduction to antiblocks – a downloadable Specialty Minerals publication.
- Replacing diatomaceous earth with Specialty Minerals talc-based antiblocks
- Replacing synthetic silica with Specialty Minerals talc-based antiblocks
- Synthetic silica replacement study: blown film
- Synthetic silica replacement study: cast film
- Economical Specialty Minerals talc antiblocks
- Specialty Minerals antiblocks for low-polymer process aid interaction
- Specialty Minerals antiblocks for low-odor applications
- Reduced slip agent interaction with surface-treated talc antiblocks
- Blown Film Basics
- Cast Film Basics
- Specialty Minerals Antiblock Technical Service Support
- What is Talc?
- Download technical data sheets for Specialty Minerals products
- Request a sample
- Specialty Minerals Publications on talc-based antiblocks – Downloadable papers by Specialty Minerals on talc-based antiblocks and their applications.
- About Specialty Minerals Inc.
- Specialty Minerals Plant Locations and Profiles
- Quality and ISO at Specialty Minerals




