CaCO3 powder to make CaCO3 filler masterbatch material
CaCO3 filler masterbatch is a material mixing of CaCO3 powder, carrier resin, and the other additives. This filler is very popular in blown film and lamination applications.
Some aspects of calcium carbonate powder in CaCO3 filler
Calcium carbonate powder is explored from the marble mines.
Particle size (top cut): D50, D97…
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) |
| 1 µ | 8 µ |
| 2 µ | 10 µ |
| 3 µ | 15 µ |
The meaning of D50/D97 in CaCO3 compound: the smaller & uniform particle size, the better dispersion and brings the end product a more smooth surface.
Whiteness
- > 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.
Brightness
It brings for the end product a 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.
- Agricultural film.
Specifications of CaCO3 filler masterbatch
| APPLICATIONS
(END PRODUCTS)
|
PROCESSING RESIN
|
PROCESSING CONDITIONS | FILM TYPE
|
FILM THICKNESS
|
| – General-purpose film (shopping bags, garbage bags, roll bags…)
– Food film – Agricultural film: + Mulch Film + Greenhouse film |
– HDPE
– LDPE – LLDPE
|
– Temperature
– Pressure
|
– Monolayer
– Multilayer + A-B-A + ABC
|
– 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 costs. 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.
