ABA film blowing machine can significantly reduce costs in producing vest bags

In some markets where the production of T-shirt bags is highly competitive, such as Türkiye, Thailand and Vietnam, film manufacturers are now replacing their existing single-layer extruders with ABA3 layer coextrusion blowers, mainly to save production costs. Over the past three years, one of Vietnam's largest T-shirt bag manufacturers has replaced half of their single-layer extruders with ABA blow molding machines to maintain competitiveness in the local market.

The ABA film blowing machine consists of two extruders and usually comes in two different sizes. The most common combination today is a 45mm screw diameter and a 55mm screw diameter, used in the production of T-shirt bags. For garbage bags, screws with a diameter of 55mm or even larger, with a diameter of 65mm, are usually used. In the outer layer of AA, 20% CaCO3 is usually used, and some color masterbatch, LLDPE, and a larger proportion of HDPE are added. The B layer can use a large proportion of CaCO3 and HDPE raw materials. Internally recycled particles can also be used for mixtures.

In addition to reducing the use of a large amount of raw materials in the formula, another advantage of ABA blow molding machines is that the strength of the 3-layer film produced by them is 30% higher than that produced by single-layer extruders. Compared to the ABC three-layer film blowing machine, the ABA machine is also more economical because it lacks one extruder.