TYPES OF CARTON USED FOR FOOD PACKAGING AND THEIR PROPERTIES
There are different types of paper used in food packaging. The usage areas of cardboards change according to the product weights, the processes they see and the number of layers. Generally speaking, it is defined in two main categories as kraft and white cardboard. Two main categories; It is defined in three subcategories as 100% virgin, liner and 100% recycled. In addition, it is seen that the paper is categorized according to the place of use. An example of this is the cup cardboard. In this article, we will continue our definitions over the main categories.
100% Virgin Kraft Cardboard is a type of cardboard with strong fibers with a fiber content of 100% (primary cellulose). Pure kraft is the strongest of all cartons. It is the most ideal packaging material for food, due to its strength, flexibility, tear resistance and ability to contact food. It is the first choice of businesses that attach importance to naturalness with its clean and natural appearance. It can be used in the presentation of all kinds of food. However, it is more common in the packaging of healthy life products such as fruit, cold pasta and seasonal salads.
Kraft Liner is usually made from a mixture of less virgin kraft board pulp and more recycled pulp. Since the dough mixing ratios are never standard, there are differences in tone. Kraft Liner, which is not very durable and cheap, can be used in food packaging by making PE and Cellophane coating.
Recycle Kraft is made from 100% recycled pulp. It is not preferred by brands in the food industry. It is a type of cardboard that is mostly preferred in the take-away or take-out packaging of the food service industry and is used extensively in the market.
100% Virgin White Cardboard is a type of cardboard that has been bleached by treatment with various bleaches with strong fibers with a fiber content of 100% (primary cellulose). One surface treated, glossy and pure white; the other surface is matte and rough white. White cardboard, with a glossy surface ideal for printed products, is suitable for design so that the brand stands out.
Krome Duplex and Triplex White Cardboard consists of layers made from recycled pulp. In duplex chromes, one side is covered with thin white pure paper to ensure food compatibility, while the other side is optionally covered with polyethylene or white cellophane. In Triplex chromes, both sides are covered with pure white cardboard. In duplex chromes, the lower surface is gray or white cellophane, in triplex chrome the gray area is in the middle of two white coatings. Coatings made in white can be glossy or matte according to the consumer's request. It is especially preferred in fast-food and takeaway boxes.
White Cardboard Recycle is a cardboard made from 100% recycled secondary cellulose. It can be dark or light gray in color. It is not a preferred type of cardboard in the food industry due to its dirty appearance. It can be used in packages that do not require contact with food.
