Fresh-keeping packaging new products

Fresh-keeping corrugated cardboard and box This type of corrugated paper is sandwiched with plastic wrap in the middle of the inner and outer liners or laminated inner and outer liners with cling film and aluminized film; there are also porous micro-powder that can adsorb ethylene gas in the papermaking process. It is mixed into corrugated pulp to make a fresh-keeping corrugated board and box. Japan produced a biological fresh-keeping corrugated carton, which is a layer of polyethylene film on a corrugated liner of a corrugated carton, and then coated with a waterproof wax coating containing trace amounts of a fruit disinfectant to prevent fruit moisture from evaporating. Respiratory suppression can maintain the freshness of fruits within 1 month.
Foreign countries have developed a self-preserving tray or tray with fresh-keeping functional sheets. The control of fresh-keeping of such sheets is to use high-absorbent polymer calcium chloride to control moisture; there are also high-absorbent polymers and activated carbon. To control moisture and absorb gas. Recently, a large amount of fresh-keeping functional flakes are functional flakes that absorb fresh juice and precipitate the juice. The flakes are made of special nonwoven fabrics and water-absorbing polymers.
An engineering polymer company in the United States made a breathable packaging film from a polypropylene film, printed it with a label, and heat-sealed it on the vent of a rigid, airtight container to control the exchange of oxygen and carbon dioxide gas. To maintain the best environment within the package, so that the storage period of fresh fruits and vegetables to extend 1.5 to 3 times.