What types of Filler Masterbatch are recommended for the packaging industry?

Highly filler masterbatch contains more than 50 % by weight of filler that are dispersed in a polymer matrix. Different process set-ups are possible depending on the type and amount of filler CaCO3. The most common fillers include calcium carbonate CaCO3 or talcum. CaCO3 Filler masterbatch are primarily used to optimize and increase the stiffness, reduce shrinkage and improve the surface appearance of the final product.

 “What are suitable filler masterbatch for packaging ?”

 If you are working in the packaging field, it must be a common question to help you find the suitable material for your end-products. In fact, the application of calcium carbonate CaCO3 filler Masterbatch in the packaging industry depends on many criteria, which makes it more challenging for plastic enterprises to find the right fits. In this article, let’s discover the top most recommended types of CaCO3 calcium carbonate  filler masterbatch for the packaging industry.

Filler masterbatch is widely used in many applications in packaging fields such as shopping bags, wrapping films, roll bags, garbage bags,…

1. What types of filler masterbatch for packaging?

1.1 PE CaCO3 filler masterbatch

PE calcium carbonate CaCO3 filler is made of PE resin, CaCO3 and other additives. It is a familiar type of CaCO3 filler masterbatch for packaging, especially in blown film thanks to its appropriate mechanical properties such as high ductility, impact strength and low friction. Most importantly, the application of PE calcium carbonate filler considerably reduces production cost, which lowers the price of end-products. Some common applications of PE filler masterbatch in blown film include shopping bags, T-shirt bags, garbage bags, … Furthermore, PE calcium carbonate filler is also used in manufacturing PP woven sack, multi-layer films, …

1.2 PP CaCO3 filler masterbatch

As the name suggests, PP calcium carbonate CaCO3 filler masterbatch is composed of polypropylene resin, CaCO3 and other additives. Its properties are similar to polyethylene, but it is slightly harder and more heat resistant. Hence, PP CaCO3 filler masterbatch is commonly used in PP woven sack and non-woven products with a view to decreasing production cost and minimizing environmental effects of the manufacturing process.

PP CaCO3 Filler masterbatch

1.3 Transparent filler masterbatch

Transparent filler, which is the combination of BaSO4 (Barium sulfate) or Na2SO4 (Sodium sulfate), plastic resins and other special additives. It can take both Polypropylene (PP) and Polyethylene (PE) as plastic carriers. Most plastic manufacturers use transparent filler to improve certain end-product properties such as stiffness, mechanical properties (bend strength, impact strength), tear-resistance and most importantly, the whiteness. Thanks to the two components – barium sulfate/sodium sulfate, end-products are offered a beautiful brightness and transparency. Also, the use of transparent filler shortens the time required for each product cycle, thus facilitating production efficiency. 

Most plastic manufacturers use transparent filler to improve the brightness and transparency

Thanks to these advantages, this material is widely used in many applications such as packaging films, containers, bottles, cans,… 

Transparent Masterbatch

1.4 Bio filler masterbatch

It would be such a pity if we miss bio filler masterbatch in this list. It is such an effective material solution to the packaging industry. Unlike other types of calcium carbonate fillers which include fossil resins, bio filler is mainly made of CaCO3 and bioplastic. This composition makes it completely environmentally – friendly, thus cutting down on the amount of waste released during plastic manufacturing production. Not only is it safe for the environment, bio filler masterbatch also offers end-products a firm structure and high tear resistance. Unlike other kinds of bioplastic, which easily go soggy in liquids, products made of bio filler masterbatch are tougher and more endurable even in the water. This advantage makes bio filler masterbatch specifically suitable for single-use products (cutleries, glasses, boxes, packaging films,…), which are consumed in bulk annually worldwide. 


2. How does CaCO3 filler masterbatch benefit the packaging industry?

CaCO3 Filler masterbatch or calcium carbonate filler is one of the most important plastic fillers. It is the combination of calcium carbonate (CaCO3), which takes up over 70% of total weight, plastic resins, and other specific additives. As CaCO3 is more reasonable than plastic resin, the application of CaCO3 into plastic combination reduces the amount of resins required, thus helping plastic enterprises save production costs. Besides, calcium carbonate also introduces various benefits to end-products such as shortening the product’s cycle (thanks to CaCO3’s good thermal conductivity), and improving the product’s mechanical properties (impact strength, tear resistance,…). For that reason, filler masterbatch is widely used in many applications in packaging fields such as shopping bags, wrapping films, roll bags, and garbage bags,…

CaCO3 Filler masterbatch is widely used in many applications in packaging fields.

The thing is, why do we need to figure out appropriate types of calcium carbonate CaCO3 filler masterbatch? As each product has different technical requirements, only certain compatible types of CaCO3 filler masterbatch can meet those standards. As such, it is quite risky for plastic enterprises to randomly choose any type of filler masterbatch for packaging because it may result in end-products quality degradation. 

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