Particle Size Distribution D50: the medium value of the particle size distribution, it is the value of the particle diameter at 50% in the cumulative distribution. For example, if D50=3 um, then 50% of the particles in the sample are larger than 3 um, and 50% smaller than 3 um.
Particle size (D50)
Top cut (D97)
The meaning of D50/D97 in CaCO3 compound: the smaller & uniform particle size, the better dispersion and brings the end product more smooth surface.
> 97%: brings for white/opaque products more whiteness then helps to reduce the usage of white masterbatch.
93-94%: less white and then can be used for color products.
It brings for the end product more bright and glossy surface.
Calcium carbonate of Vietnam
Purity: CaCO3 content > 98.5%
Whiteness: > 97%
Brightness: > 96%
CaCO3 filler masterbatch in blown film products
Application of CaCO3 filler masterbatch
Food wrap for supermarkets.
Shopping bags, t-shirt bags, roll bags, garbage bags…
Bags for heavy products.
Specifications of CaCO3 filler masterbatch
– General-purpose film (shopping bags, garbage bags, roll bags…)
– Food film
– Agricultural film:
+ Mulch Film
+ Greenhouse film
– Mono layer
– Multi layer
– Thin film:
< 10 mic
– Thick film
Advantages of CaCO3 filler masterbatch for the end products
Calcium filler masterbatch brings many advantages for products in blown film.
Productivity: It increases volumetric output (as a result of thermal conductivity & volumetric expansion to temperature). This filler brings the ability to downgauge due to higher film physical properties.
Cost-saving: It helps to reduce material cost. It also gets less energy to run the machine due to higher CaCO3 specific heat.
Physical properties: CaCO3 filler increases stiffness as well as to get the less off-spec product. The material acts as an anti-block agent.
CaCO3 filler masterbatch for lamination/extrusion coating
Calcium carbonate filler masterbatch from coated CaCO3 and PE & PP carrier resin can be made to apply for the coated product and multi-layer film.
When using CaCO3 filler masterbatch in coated products and multi-layer film, the producers can get some benefits such as increasing productivity due to increased volumetric output; improved adhesion due to the difference between CaCO3 & polyolefin; and improved printability due to rough microsurface of CaCO3.
To get more information about CaCO filler masterbatch, please kindly visit our Fillplas website.