SYLOBLOC® Antiblocking Agents
Blocking is the adhesion or bonding of two surfaces of film that occurs after production and/or during prolonged storage. Layers of polymer film tend to stick together.
This "blocking" phenomenon is especially severe with polyolefin films like polyethylene and polypropylene.
SYLOBLOC® silica imparts
- A micro-rough surface to the film, resulting in less contact, and
- Less blocking between the individual layers of film
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The SYLOBLOC® product range includes tailor-made silicas for different film thicknesses and types.
Grace Davison application engineers can help you select the optimal grade for your needs, including SYLOBLOC® Integrated Combination Products
Working with SYLOBLOC® additives is simple:
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Since plastics come in the form of pellets, powder, or paste, incorporating SYLOBLOC® additives into the mix can be achieved with many different types of equipment.
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SYLOBLOC® silica can be mixed with resin by adding the final concentration necessary to obtain the desired effects. Or it can be added in much higher concentrations in order to obtain a master batch. The degree of dispersion depends on the equipment used.
However, high shear forces generally have to be applied in order to obtain a homogeneous distribution of the SYLOBLOC® particles in plastic.