U.S. International Paper Co., Ltd. can be said to be the leader in carton packaging, providing a complete packaging solution, including fresh house roofing cardboard, filling equipment and opening devices. Whether it is used to package milk products, or juices and fruit drinks, the cardboard roof package can ideally preserve the fresh flavor and nutritional value of the product.
Roof-type packaging can be processed using different processing methods. Pasteurization preserves the flavor profile of the product with a lower heating technique while also ensuring that the product is structurally stable during refrigeration. However, the gentle heating process does not significantly extend the shelf life, generally only a few days. In order to extend the shelf life to one month, fruit juice beverages can be produced through stricter hygiene control, while dairy products can be processed through an ultra-high temperature flash sterilization program. For high acid products with a pH of 4 degrees or less, hot fill cartons can be selected and then cooled to produce beverage products that can be stored in a non-refrigerated environment for a long shelf life.
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