What is Cold Crack? 

Cold crack occurs when plastics stiffen at low temperatures and split under stress. Even a small crack can break the seal, allowing moisture to enter, causing freezer burn or bacterial contamination. The consequences are serious: wasted product, operational delays, and potential regulatory problems. 

Not all plastics handle freezing well. Standard polyethylene films may perform at ambient temperatures but often fail at -18 degrees Celsius or lower. Freezer-grade plastics are formulated to retain flexibility and seal integrity in these conditions. 

Why Seal Strength Matters 

Seal strength determines how well two layers of plastic adhere to each other. In meat packaging, a robust seal prevents leaks and contamination throughout storage and transport. Weak seals are more prone to tearing under cold stress, a common cause of cold cracking. Materials engineered for freezer performance help maintain package integrity, reducing product loss and line downtime. 

Practical Applications 

Processors supplying frozen beef, poultry, or ready-to-cook meals rely on packaging that withstands freezing and handling. Packages that crack can expose meat to air, resulting in freezer burn, moisture loss, and compromised texture. 

Freezer-grade plastics, such as high-density polyethylene with cold-resistant additives or multilayer laminates, keep seals strong and flexible at sub-zero temperatures. This ensures meat remains safe, fresh, and visually appealing from production to delivery. 

Operational and Commercial Benefits 

Strong freezer packaging reduces waste and production interruptions. Fewer failures mean a smoother supply chain and simplified inventory management. 

Reliable packaging also protects brand reputation. Meat buyers expect products to arrive intact. Packaging failures can undermine trust, while using materials designed for freezer performance demonstrates a commitment to quality that resonates with procurement and quality assurance teams. 

Partnering with UPAC 

Selecting the right packaging for frozen meat requires expertise. UPAC works closely with processors to recommend suitable materials, thicknesses, and sealing technologies. We provide practical guidance to maintain product safety, operational efficiency, and brand confidence. 

In an industry where safety and quality are non-negotiable, partnering with UPAC ensures that products remain protected, operations run smoothly, and brand reputation is preserved.