Blowing film resin – which is the most effective?

Blowing film is one of the most popular methods of film manufacture. However, it’s not an easy mission to choose the right blowing film resin because each product requires specific properties, which leads to different input materials. So how exactly do we find the correct ones? Let’s hammer out in this article!

1. What is blowing film?

Blowing film (also known as the Tubular film) is one of the most common methods of film manufacture. To initiate the process, materials mixture is entered into the extruder through a hopper. After being melted, it goes through an annular slit die and is formed as a thin tube. The tube is then cooled by the air ring and continues moving upwards until it passes through nip rolls, where it is flattened. This lay-flat tube is then taken back down via more rollers. The edges of the lay-flat are slit off to produce two flat film sheets and wound up onto reels.

2. What is blowing film technology used for?

Blowing film is widely used in many applications to create various products, ranging from simple monolayer films for bags to very complex multilayer structures used in food packaging. Some products of this process include:

–         Industrial films and bags

–         Agricultural and construction films

–         Barrier films

–         Stretch films

–         PVC cling films

–         Laminating films

–         Can liners

–         High barrier small tube systems.

3. Why need to consider blowing film resin?

As mentioned above, there are many types of films which are the outputs of the blowing film process. However, each product has some particular properties regarding adhesion, stiffness, toughness, formability, thickness,…thus requiring mindful choices of input resins to ensure that end products can meet all standard requirements.

Besides, the choice of resins is also about the production cost problem as raw material cost accounts for up to 80% of the overall cost of making film. Therefore, making the right decision on the input resins also helps plastic manufacturers save a large amount of expense.

4. Dai A filler masterbatch – ideal choice for blowing film technology

Filler masterbatch is a combination of high-quality canxi carbonate (CaCO3), plastic resins and other special additives. Most importantly, the main component CaCO3 is available and at a reasonable price, which makes filler masterbatch an effective solution for both targets – resins and cost reduction.

Dai A filler masterbatch has become the top-of-mind filler masterbatch manufacturer all over the world.

Our most popular products include:

–         Filler masterbatch PE

–         Filler masterbatch PP

–         Filler masterbatch engineering polymer

–         Transparent filler masterbatch

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