Describe The Principle Of Anti Fog Vegetable Packaging Bags

What is the principle of anti fog vegetable packaging bags? It doesn't matter if I don't know. Today, the editor will tell you about the principle of anti fog vegetable packaging bags. Let's learn about it through the article.
Anti fog vegetable packaging bags refer to bags made of food preservation films that are mainly used to preserve vegetables, fruits, grains, cooked foods, and other foods. They are mainly produced for the packaging of fruits and vegetables. Vegetable packaging bags integrate multiple functions such as preventing water mist condensation, maintaining moisture and taste, inhibiting decay, and regulating gas, with a lasting freshness effect.
Fruits and vegetables are still alive after harvest and need to maintain their normal metabolism in order to maintain their fresh quality. Therefore, according to the organizational structure and physiological activity characteristics of different fruits and vegetables, controlling their respiratory metabolism, reducing water loss, preventing microbial invasion and enzyme action, and protecting the integrity of fruit and vegetable tissue are the main factors in selecting packaging materials and packaging methods. Low temperature and controlled atmosphere are effective methods for storing and transporting fruits and vegetables for a long time. The specific storage method should be selected as anti fog bags for vegetables.

The main materials used for sales and packaging of fruits and vegetables include plastic films, such as cellophane, PVDC coated cellophane, PVC film, PE film, PS film, and PP film. Use bags or shrink film packaging, choose breathable film or appropriately punch holes in the film according to breathability requirements to meet the needs of fruit and vegetable respiration. Cushioning shallow plates made of molded products of pulp or paperboard, plastic sheet thermoforming products, and foamed plastic are also commonly used for packaging fruits and vegetables with consistent shapes, and then covered with shrink film, or the tray and food are put into plastic bags or paper boxes together. There are transparent plastic windows on the carton to clearly see the contents of the package. Wooden boxes, pulp molded products, plastic baskets (boxes), and corrugated cardboard boxes are used for the transportation or storage packaging of fruits and vegetables. Kraft paper bags, multi-layer paper bags, windowed paper bags, fiber mesh bags, plastic mesh bags, perforated paper bags, and plastic bags are mostly used for the storage, transportation, and sales packaging of root vegetables such as potatoes and onions.

Using PE and PP resins that are more economical and have a certain degree of gas permeability as the basic materials, and adding various additives during the manufacturing process of the film can improve the antifogging, ethylene absorption, water absorption, and antibacterial properties of the film. This film can be processed into various multi-functional fresh-keeping packaging bags. For example, ethylene adsorption fresh-keeping film is a film made by mixing microporous tuffacete, calcite, and silica with gas adsorption in the PE resin, The film has limited absorption capacity for ethylene gas, and is mainly used for the preservation of vegetables such as cauliflower, cucumber, lotus root, and fresh mushrooms. For vegetables and fruits with high ethylene production, it is effective to put ethylene adsorbent in the packaging bag.