Food Packaging

Polyolefins form the foundation of modern food packaging due to their food- contact safety, moisture barrier properties, and exceptional processing flexibility. LDPE and LLDPE films dominate flexible food packaging — bread bags, frozen food pouches, fresh produce films, and form-fill-seal applications benefit from their toughness and sealability. HDPE provides rigidity and chemical resistance in milk bottles, juice containers, still and carbonated soft drinks, and dry food canisters.

Polypropylene serves extensively in yogurt cups, margarine tubs, microwaveable containers, and snack food packaging, valued for its heat resistance and organoleptic neutrality. Cast and biaxially oriented PP films (CPP, BOPP) deliver excellent clarity and moisture barrier in confectionery, bakery, and snack laminates.

Engineering plastics address demanding food packaging requirements where barrier performance, mechanical strength, and thermal resistance are paramount. PET dominates carbonated beverage bottles, water bottles, and food trays, combining outstanding gas barrier, clarity, and recyclability. Polyamide layers in multilayer flexible structures provide oxygen and aroma barrier for processed meats, cheese, and coffee packaging requiring extended shelf life. EVOH (ethylene vinyl alcohol), though not strictly an engineering plastic, delivers exceptional oxygen barrier in multilayer coextruded films and bottles for sauces, condiments, and sensitive food products. Polycarbonate historically served in reusable water dispensing bottles.

White and color masterbatches using food-approved pigments provide product differentiation and UV light protection in dairy and juice packaging. Antifog masterbatches maintain visibility in fresh produce and meat packaging by preventing moisture condensation on film surfaces. Slip, antiblock, and processing aid masterbatches optimize high-speed packaging line performance without compromising food safety. Surface primers and corona treatment chemicals ensure adhesion reliability on polyolefin substrates. Food-safe mold release agents and processing lubricants maintain production efficiency in injection molding and thermoforming of food containers without contamination risk.