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film-fiber

Film & Fiber

We offer a full suite of carefully treated products for use in plastic film and fiber. Our products are engineered to consistently provide low moisture, a narrow particle size distribution and carefully controlled topsize to improve efficiency and quality in your film and fiber. Low levels of lead, mercury and arsenic in our limestone and our use of a food-contact grade carboxylic acid for the treatment provide a treated ground calcium carbonate  that can be used in food-contact applications.

InCal® XFT

1.4 micron median treated ground calcium carbonate

InCal® 1T

1.9 micron median treated ground calcium carbonate

InCal® 2T

2.4 micron median treated ground calcium carbonate

InCal® XCL

3.0 micron median treated ground calcium carbonate engineered for thin film applications

InCal® 3T

3.5 micron median treated ground calcium carbonate

Span

A calculated value that describes the breadth of the particle size distribution by looking at the size of the particle below which 90% of all particles are found (d90), the median and the size of the particle below which 10% of all particles are found (d10).

The Span is calculated from the following equation:

Where:
d90 = particle size below which 90 % of the particles are described
d10 = particle size below which 10% of the particles are described
d50 = particle size below which 50% of the particles are described, also known as the median

Broader distributions have a larger span while narrower distributions have a smaller span.

Level of Ultrafines

The percentage of the total distribution that includes particles that are 0.5 microns or smaller.

Some demanding applications require careful control of the level of very small particles. These particles can make the powder difficult to disperse and can actually absorb important components of formulations ultimately altering end-use performance.

Topcut

The size below which 100% of the particles can be found.

Unlike most ground calcium carbonate suppliers, INCOA specifies at the 100% passing rather than the industry standards of 95% or 98% passing. We recognize that even very low levels of oversize particles can interfere with the performance of our products in your applications

Median

The size below which 50% of the particles can be found.

This is the most common means of describing the size of ground calcium carbonate powders. INCOA describes our medians on the final product as-received by our customers. This means that the specification testing is performed on samples of the shipment before shipment on the final product not on material still in-process.