TAGS: Surface Modification
Tosaf introduces MB: AB8937PC anti-block masterbatch for the extrusion of polycarbonate corrugated sheets. Most of Tosaf’s polycarbonate masterbatches and compounds are designed to produce PC sheets (solid sheets, multi-wall sheets and corrugated sheets) via an extrusion process.
Addressing Stickiness of Corrugated Sheets
The standard thickness of corrugated sheets (only 0.8mm) is very thin compared to multi-wall or solid sheets. In addition, corrugated sheets are not protected with protective film, because it is very difficult to apply the film on the corrugated structure.
As a result, electrostatic charges generated during the sheet extrusion strongly stick the sheets together when they are stacked one on top of each other.
Corrugated sheet producers yearn for a solution that can effectively block sheet stickiness. While Tosaf’s current anti-block additive (
AB7774PC) does address corrugated sheet stickiness, a new solution was required for high-capacity conditions with extreme temperatures and high shearing rates.
As a result, Tosaf recently completed the development of a second anti-block named MB: AB8937PC. Together with Tosaf’s current anti-block additive (AB7774PC), the new MB provides a wide solution for all corrugated sheet producers, which may apply to different processing conditions during the extrusion of corrugated sheets.
Both masterbatches use the same mechanism that is used in the film industry, which creates asperities (i.e., “little bumps”) that help minimize sheet-to-sheet surface contact. As a result, the distance between the two surfaces is increased, thereby minimizing blocking.
Tosaf's Complete Anti-block Agents Range
Source: Tosaf