Antiblock Masterbatch

Easy-open package, high-clarity mineral and polymeric types (bags, film ... .)

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Many types of Antiblock are available, ranging from synthetic silica formulations to give high clarity, through natural silica to offer high performance where cost is important and clarity can be compromised, to calcium carbonate where simple Anti-blocking without clarity is required.

Pre-colored products range from custom compounds to specific tradename resins from any resin manufacturer - whether you need a specific polymer or let Pure Polymers to choose the resin based on your specifications, we maintain the same precise color tolerances. Delivered when you need it, Precolored samples and production orders are shipped within 7 business days - always with the highest quality and commitment to service, and attention to detail only experience can provide.

Antiblock Masterbatches

can be produced in a wide range of polymers including polyethylene, polypropylene, ionomers, polyamides, thermoplastics polyurethanes, and others. Combinations with antistatic and slip products offer cost-effective products for use in the film industry. Application Examples Film, sheet, and others.

SLIP & ANTIBLOCK PRODUCTS

• Full range of products for the extrusion industry.

• Grades formulated for high transparency applications

• Cost-effective, highly concentrated systems available

• Combination masterbatches for the complete solution

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ANTIBLOCKING ADDITIVES

Polyolefin and other plastic films have a tendency to adhere together, often making it difficult to separate layers. This adhesion between film layers, called blocking, is an inherent property of some polymers. Anti-blocking additives can be added to the plastic to minimize this adhesion and so lower the blocking force between layers. Once compounded into aplastic these additives create a microroughsurface which reduces the adhesion between film layers and lowers the blocking tendency.

Two factors determine the antilocking effect:

• Nu mber of particles of antiblock at the film surface.

• Size of the antiblock particles

Types of Antiblocks:

The choice of antiblock depends upon the polymer being used and the quality requirements of the end product.

Synthetic Silica

This is an amorphous form of hydrous silicon dioxide with high microporosity, a hydroxylated surface, and a high surface area. Synthetic silica is used in high-quality films and as it has a refractive index close to that of PE and PP it is possible to produce films with high transparency and clarity.

Limestone

This is a naturally occurring mineral mainly consisting of calcium carbonate together sometimes with magnesium carbonate depending on the deposit. It tends to be used as an anti-block in lower quality film applications.

Natural Silica

Natural silica is a sedimentary rock composed of the skeletons of single-celled diatoms. The skeletons are made of amorphous silica and have a wide range of porous structures and shapes. Impurities such as water and organics con easily be removed, however, the removal of quartz is more complex so natural silicas tend to contain differing levels of quartz depending on the deposit.

Talc

Tole is a magnesium hydro silicate. It has very low hardness and a refractive index close to that of PE and PP. Deposits ore found around the world and although it contains certain levels of impurities these can be minimized through refining.

Organic Additives

Natural silica is a sedimentary rock composed of the skeletons of single-celled diatoms. The skeletons are made of amorphous silica and have a wide range of porous structures and shapes. Impurities such as water and organics con easily be removed, however, the removal of quartz is more complex so natural silicas tend to contain differing levels of quartz depending on the deposit.

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