Food packaging film can play a protective role for food, protect the freshness of food and prevent dust and other effects on the sale of food. The following gives you specific knowledge of food packaging film, food packaging film can protect food and extend the shelf life of food, mainly in the following ways.
a. Protect the appearance quality of food to produce certain economic benefits.
b. Protect the original quality of the food and extend the shelf life of the food.
In addition, food packaging film can facilitate circulation, prevent food from deterioration and extrusion in transportation, as well as the fall of dust, and is now an indispensable food packaging tool in life.
What are food packaging film materials？
Food packaging film has the characteristics of light quality, easy to use, good heat and cold resistance, and good appearance can be in direct contact with food, uncovered without residue, to ensure that the food is fresh, hygienic, and safe. Today we introduce you to the materials of food packaging film.
1, polycyano fatty acid ester: it is a high biological material, with degradability and thermal processing properties, can keep food fresh for a longer period of time.
2, polyethylene: chemically stable, good water resistance, but also tensile, low-temperature resistance.
3, polypropylene: as a film material packaging food, suitable for fried food packaging.
4, polyvinyl chloride: used for fresh fruit packaging, thermal stability performance is not good, but good gas and oil resistance.
5, polycarbonate: can be injection molded into tubs and boxes, with good transparent performance, impact resistance is also very good, but the price is higher.
Analysis of the performance advantages of vacuum packaging film
Vacuum packaging film is a generic term for flexible packaging composite film products, there are two-layer composite and three-layer composite, the common two-layer composite more, with a large shrinkage rate, good flexibility characteristics, can be packaged for any shape of goods, can clearly show the appearance of the product, improve the sense of awareness, reflecting the high-grade. Today share the performance advantages of vacuum packaging film.
1, the vacuum film and the items are completely close coincidence, and the vacuum packaging, space to reach the minimum, with excellent moisture resistance, with this packaging does not need to add desiccant, saving the cost of the cost.
2、Good protection, the vacuum packaging film packaging can be fixed and not move, each other tightly, will not damage the product due to handling and delivery, good fixity, never produce mutual friction caused by scratch.
3, good anti-static ability, according to the appearance of the product can be extended attached, so that the product pattern type at a glance, beautiful and neat, improve product value, increase the desire to buy.
4、Good welding and sealing performance, high strength, suitable for manual, semi-automatic, and highly automatic packaging.
5、Healthy and environmental protection, can be used in the packaging of food.