Wide selection of packaging films for the bakery industry

When it comes to the bakery industry, the history of different films used for packaging goes back many years. Wax paper has been the primary packaging material of choice for decades, and paraffin wax is a specialized coating material for bleached paper stock that is suitable for weight. Over time, other types of films were introduced into the bakery industry, including cellulose films and polyethylene plastic films. Below we'll explore some of the films currently used in the baking industry and the characteristics that make them a popular choice. Cellulose film (cellophane): Ordinary cellulose is a smooth transparent film, odorless, tasteless, and biodegradable. Easy to tear, but also tough and puncture resistant, which is important for the bakery industry. The folding properties of cellophane make it suitable for wrapping but not heat sealing. Ideally, it's used for foods that don't require a complete moisture or gas barrier, such as fresh bread and some sweets. Polyethylene film: Usually cheaper than most films, low density polyethylene is heat sealable, has no odor and shrinks when heated. While it is a good moisture barrier, it is a poor odor barrier because it is relatively oxygen permeable. Commonly used in packaging bags, coated paper and as a component of composite materials. High-density polyethylene is stronger, thicker, and less flexible than low-density polyethylene, and is commonly used in bread bags and bulk bread wrappers. Polypropylene film: widely used in the packaging of baked food, biscuits, snack food and dry food, it is a transparent and glossy film with good puncture resistance and high strength. It is somewhat malleable and has a moderate barrier to moisture, gases and odors, while being unaffected by changes in humidity. In Europe it is used to wrap baguettes and rolls. Co-extrusion films: A common choice for baked goods, confectionery and cereals, co-extrusion is the simultaneous extrusion of two or more layers of different polymers into a single film. These films have high barrier properties compared to other types of films and are thinner than laminates, making them easier to use on filling equipment. Coextrusion typically has 3 layers, including an outer layer with high gloss and printability, an intermediate bulk layer, and an inner layer for heat sealing.

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