Understanding "Strength" When Customizing Film Blowing Machine

Today, we continue our discussion on a crucial aspect to consider when customizing film blowing machine—film strength.

"Strength" is a comprehensive concept that requires breakdown and analysis:

1. Tensile Strength

Tensile strength: The ability of a film to be stretched without breaking.

High-requirement products: Heavy-duty packaging bags, stretch wrap films, courier bags.

Equipment-related: Requires a screw for uniform plasticizing and mixing to ensure full molecular chain extension; an efficient cooling system for a denser film crystalline structure.

2. Tear Resistance

Tear/Puncture Resistance: The ability to resist localized tears or punctures from sharp objects.

High-requirement products: Garbage bags (containing sharp objects), industrial parts packaging, rice bags.

Equipment-related: More related to material selection (e.g., adding LLDPE), but also requires good equipment plasticizing to ensure uniform additive dispersion.

3. Impact Strength

Impact strength: The ability to withstand instantaneous impact forces (e.g., a bag falling).

High-requirement products: Liquid packaging bags, frozen food bags (must not crack at low temperatures).

Equipment-related: Good melt temperature control is crucial; excessively high or low temperatures will affect impact performance.

The clearer your product positioning, the more precise the solutions provided by equipment suppliers will be, and the more likely the equipment you invest in will become a "weapon" for seizing the market, rather than an expensive and cumbersome decoration.