Good food packaging must first understand the characteristics of the food itself and the required protection conditions, research and master the packaging performance, application scope and conditions of packaging materials, the impact of packaging materials on food, food packaging safety and hygiene, packaging costs. Nuts, a category of closed fruit, have hard skins and contain one or more seeds. Fruits such as chestnut and almond.
Nuts are the essence of plants and are generally nutritious, with high levels of protein, oil, minerals and vitamins. Therefore, considering the choice of the type of nut packaging bag, it is necessary to combine the characteristics of the nut fruit. The main problems are moisture resistance, insect resistance, anti-aging, flexibility and puncture resistance. Domestically, grain-like embryos can breathe without generating excessive breathing heat, thereby keeping the grain fresh. The three-side sealing nut packaging bag, the customer puts the nut food from the bottom into the side sealing bag, and then heat seals half a centimeter.
Colorants can also be added to the transparent plastic packaging materials or coatings of different colors can be applied on the surface to achieve the shading effect. If the nut food is oxidized or mildewed, the nutrient components such as protein and amino acid of the nut are changed. Therefore, the high barrier property of the nut packaging bag must meet the demand. However, choosing PET / AL / PE, kraft paper / AL / PE, PET / VMPET / PE, and aluminum-containing foil materials can satisfy and control good sealing, high barrier properties, and good fragrance retention.