Labthink Knowledge

Stretch wrap film has become an indispensable packaging solution globally, used to tightly secure goods for efficient transportation and reliable storage. Its versatility stems from its unique properties: lightweight yet strong, highly elastic, self-adhesive, and capable of conforming to any shape without damaging the contents. Produced through advanced cast film extrusion processes, these films boast excellent tensile performance, tear and puncture resistance, high transparency, superior self-adhesiveness, and impressive retraction rates, ensuring packages remain compact and secure. From chemical raw materials and food products to electromechanical goods and textiles, stretch wrap film provides crucial protection, with specialized types like PE (eco-friendly) and PVC (specific uses) catering to diverse needs. The Imperative of Quality Control Given its critical role in safeguarding products throughout the supply chain, the consistent quality of stretch wrap film is paramount. Manufa...

Recycling plastic bottles is vital for environmental protection, but it can affect their oxygen barrier properties, making them less suitable for oxygen-sensitive products. Our case study on PET bottles with varying amounts of recycled material found that increasing the recycled content from 25% to 50% only slightly reduced their oxygen barrier. This suggests that using more recycled material does not significantly compromise the bottles' performance. The Problem The growing trend of recycling waste plastic bottles requires an understanding of how reclaimed materials affect a product's performance. For PET bottles, a crucial metric is their ability to act as an oxygen barrier. High oxygen permeability can compromise the quality of packaged goods, limiting the use of recycled materials in food and beverage containers. This study aims to quantify that effect by testing bottles with varying percentages of recycled content. The Test Two types of PET bottle samples were tested...