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What are calcium carbonate filler properties? How is it applied in the plastic industry?

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Calcium carbonate filler is no longer a strange substance to plastic firms as it plays a vital part in manufacturing various plastic products such as plastic films, household appliances,… So, which calcium carbonate filler properties make it the first priority and how is it applied in the plastic industry?

The global market is witnessing strong fluctuations of the oil price as a result of unstable political situations as well as the limited capacity of factories in America and Asia because of the ongoing maintenance period. That immediately puts a large number of plastic firms who depend heavily on imported raw materials into big trouble as they have no choice but to accept the abnormally high price together with the shortage of inputs which definitely can’t meet the demand. In that situation, plastic fillers, especially calcium carbonate filler emerges as an ideal solution for entrepreneurs to deal with a tight budget while remaining almost all of the outstanding characteristics of primary resins. 

Calcium carbonate filler properties are suitable for most of plastic resins
Calcium carbonate filler emerges as an ideal solution for entrepreneurs to deal with a tight budget

So, what are calcium carbonate filler properties that make it the most common plastic filler materials?

1. What is calcium carbonate filler?

Calcium carbonate filler is a combination of calcium carbonate, which is commonly known as the main component of many animals such as seashells, pearls, seashores,…and found in high reserve in the form of limestone, plastic resins and other special additives depending on the customers’ requirements. Calcium carbonate filler properties are largely determined by its component which is mainly calcium carbonate.  

In nature, calcium carbonate is divided into 2 main types: Ground calcium carbonate – GCC and Precipitated calcium carbonate – PCC:

  • Ground calcium carbonate – GCC is a commonly used substance in the plastic industry. After being grinded into small pieces, this material is classified into different groups based on each bead’s size. 
  • Precipitated calcium carbonate – PCC is more complex to be processed than its counterpart. The procedure includes 3 steps: raw material calcification under high temperature (1000 Degree Celcius), slaked lime production by quicklime hydration and precipitated calcium carbonate creation by slaked lime carbonization, clarification and drying.
Calcium carbonate is found in high reserve in the form of limestone
Calcium carbonate is found in high reserve in the form of limestone

Basically, these two substances share the same chemical components. However, PCC is more transparent than its counterpart as a significant amount of silica and lead has been removed during the process. The greatest difference lies in the size and shape of the beads under a high level of magnification. Specifically, the frequency of PCC beads is narrower than that of GCC, which makes them better at oil-absorbing and impact resistance. Therefore, outstanding calcium carbonate filler properties will be provided at the presence of PCC. 

Related: What is calcium carbonate filler? What characteristics do they have?

2. Calcium carbonate filler properties

One of the main reasons making CaCO3 filler an ideal solution for many plastic end-products manufacturing enterprises is its outstanding properties:

  • High level of white color and transparency: Inheriting calcium carbonate’s natural white, CaCO3 filler is relatively bright and transparent without any additives needed, thus helping enterprises save production costs. This advantage gives it a leg up in many fields, especially those requiring a high level of white color such as packaging, household appliances,…
  • The inertness: One of the outstanding calcium carbonate filler properties is the inertness, which means this substance barely has any chemical reaction with most of the popular resins. This allows CaCO3 filler to be mixed with a wide range of plastic resins without any negative impacts on the main properties of the combination. Also, the application of pigments into the combination is smoother. 
  • Good mechanical properties: Calcium carbonate has good thermal resistance and flexibility, allowing it to be processed under different forms such as fibers, beads, bars,… without any difficulties. Furthermore, calcium carbonate filler properties include rigidity enhancement, quick quenching and plastic forming. These not only help enterprises cut costs, but also significantly improve the quality of end-products.

Related: Top 3 suppliers for you to buy plastic filler calcium carbonate

3. How is calcium carbonate filler applied in the plastic industry?

Thanks to outstanding calcium carbonate filler properties, CaCO3 filler is widely applied in many fields. These below are amongst the most well-known.

Blown film

It would be such a big mistake if the list of common applications of calcium carbonate filler missed blown film. Generally, the use of CaCO3 filler increases the blocking and anti-slipping ability, not to mention tensile strength improvement. This advantage plays an indispensable part in blown film as many enterprises struggle with separating two adjacent layers during the blowing film process. Thereby, calcium carbonate filler not only simplifies this process, but also drives the efficiency of the production. 

One of common applications of calcium carbonate filler iss blown film
One of common applications of calcium carbonate filler iss blown film

Besides, the application of calcium carbonate filler also enhances the transparency and brightness of end-products as CaCO3 itself has a natural white color. Since calcium carbonate is non-toxic, it is totally safe for users especially when being used in direct food contact films.

Non-woven fabric

Non-woven fabric is another common application of calcium carbonate filler. Adding this material into non-woven improves the surface covering ability of the fabric by minimizing luster and enhancing opacity. Thanks to its natural white color – which is one of outstanding calcium carbonate filler properties, calcium carbonate filler provides end products a white color with limited yellowness. Besides, this substance also creates more micro areas for air filtration and oil absorption, thus improving the quality of finished products. 

Non-woven fabric
Non-woven fabric – another common application of calcium carbonate filler

Also, using filler calcium carbonate paves the way for higher productivity as this substance reduces processing temperature, thus taking less time to manufacture and saving cost for enterprises. Another advantage of calcium carbonate filler is that it can easily mix with multiple base resins, not to mention thermal conductivity and impact resistance of end products.

Injection molding applications

Thanks to ultimate calcium carbonate filler properties, this material is widely used in manufacturing various household appliances such as parts of rice cooker, vacuum, toys and some electric equipment,…The use of CaCO3 filler not only provides enterprises an optimal solution to tackle the cost problem, but also advances end-products’ thermal conductivity, impact resistance and flexural strength, not to mention the shrinkage.

Ceiling tiles, frames, plastic doors

One of the most noticeable properties of calcium carbonate filler is its cost-effectiveness. As such, adding this material into PVC resin reinforces the rigidity, the dispersion as well as the glossiness, thus advancing the end products’ quality. Besides, calcium carbonate also improves the weather resistance ability of end products which are normally exposed to environmental factors for a long time.

Related: Top 3 suppliers for you to buy plastic filler calcium carbonate

4. EuroPlas calcium carbonate filler

Manufactured by Vietnamese high quality calcium carbonate, EuroPlas filler masterbatch has full of calcium carbonate filler properties:

  • Natural white color with appropriate opacity
  • Excellent dispersion
  • Weather resistance
  • High rigidity and flexibility
EuroPlas calcium carbonate filler is widely used in many fields
EuroPlas calcium carbonate filler is widely used in many fields

As such, EuroPlas calcium carbonate filler is widely used in many fields like blown film, injection molding, non-woven, extrusion,…

For more information about our filler masterbatch, contact us HERE!

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