Compared with paper boxes or shrinkage film packaging, polypropylene film packaging has significant advantages in cost, function and environmental friendliness. The specific analysis is as follows:
1.Cost advantages
Material costs are low: the price of polypropylene films is usually lower than that of paper boxes and PVC/PE shrinkage films. Especially in large-scale production, unit packaging cost can be reduced by 20% -30%.
4. High processing efficiency: Polypropylene film packaging machine (such as fully automated bag makers) can process between 40 and230 bags per minute, much faster than cardboard box folding or heat shrinkable film. It costs less to use labor and energy.
Transportation cost optimization: film roll are small in size and light in weight. Compared to pre-formed paper boxes or heat shrinkable films, storage and transportation space can be reduced by 30 to 50 per cent.
2.Functional Advantages
Strong sealing: Polypropylene film adopts thermal sealing process to form seamless packaging, and has excellent moisture and antioxidant properties compared to paper boxes (easy to absorb moisture and deformation). No additional desiccants required.
High transparency: polypropylene film can be custom-made in transparent or translucent form, which can directly display the appearance of the product and enhance consumers' desire to buy. On the other hand, cardboard boxes require a window design to achieve a similar effect.
Piercing resistance: Polypropylene films are 1.5 to2 times more The tensile strength than shrinkage films and are suitable for packaging with sharp edges,such as paper cups with suction tube slots, reducing the rate of transport damage.
Adaptable: can be combined with irregularly shaped packaging such as conical paper cups. Custom can be achieved by adjusting bag sizes and sealing method, while paper boxes require separate mold design, which are expensive and time-consuming.
3.Environmental advantages
High recyclability: Polypropylene (PP) film is a simple plastic with a a recyclability rate of over 90%. By contrast, shrinkage membranes often contain PVC or composite materials that are difficult to recycle; paper boxes are biodegradable but require significant wood resources.
Low carbon emissions: Production 1 tonne of polypropylene film carbon emissions emissions by 40% compared to paper boxes. In addition, film packaging is lightweight, further reducing carbon emissions during transport.
No pollution risks: polypropylene films do not contain plasticizers or heavy metals and meet food-grade safety standards. Conversely, some constricting membranes may release harmful substances (such as phthalates).
