Attività

In film blowing, flow instabilities limit the production rate and the quality of the film produced. The phenomena of sharkskin and melt fracture are known to commence when a critical wall shear stress is exceeded at the die lips. The critical value from laboratory experiments with capillaries is usually reported as 0.14 MPa, while in industrial installations much higher values are attained with the use of various additives, such as fluorocarbon polymers for LLDPE. In other processes involving polymer melt stretching, such as melt spinning and film casting, the phenomenon of draw resonance might be present under certain conditions. Draw resonance is a periodic fluctuation of diameter (in melt spinning) or thickness (in film casting). There have not been any relevant studies on draw resonance phenomena in film blowing.

What is a Paper Making Machine?

Apart from the other devastating problems associated with plastic bags, did you know that synthetic bag manufacturers produce about one trillion of those bags in a year globally?

Did you also know that it takes one thousand years for a single bag of this kind to biodegrade?

Yes, that’s the scariest part of it.

Due to that, most governments are imposing bans on these carriers.

The alternative?

A mega-shift to more environmentally friendly paper bags.

So basically a paper bag making machine is a state of the art machine that gathers, folds, stamps, and processes papers to produce clean paper bags.