Application of Vacuum Bags
Vacuum bags are widely used in a wide range of industries:
1. Food packaging: rice, meat products, dried fish, aquatic products, bacon, roast duck, roast chicken, roasted pigs, frozen food, ham, bacon products, sausages, cooked meat products, pickles, soy sand, condiments and so on.
2. Hardware electronics: suitable for circuit boards, electronic products, mechanical accessories, consumer goods, industrial products and other packaging.
3. Pharmaceutical packaging: vacuum bags are suitable for large-scale machinery and equipment, chemical raw materials, pharmaceuticals and other packaging.
How to control the thickness of a vacuum bag:
1. vacuum bag thin and thick symmetry is the key to the thickness and symmetry of the composite front film. In other words, its thin quality is the prerequisite for improving its quality.
2. The high barrier of plastic film in vacuum bag is closely related to the thickness of plastic film.
3. The uniformity of the plastic film thickness of vacuum bag endangers the Rashin characteristics of plastic film machinery and equipment. Good thickness uniformity of aluminum foil bag plastic film can obtain good packaging printing accuracy and composite quality.
4. For the same material, the greater the thickness of the vacuum bag film, the higher the start-stop heat seal temperature, and vice versa. That is to say, the vacuum bag film thickness is uniform, can obtain a uniform nail quality, to prevent some heat seal hidden dangers.
At present, the vacuum bag on the market mainly uses four-layer structure design, with good water and oxygen separation function. In addition, for quality qualified vacuum products, in the production process must be in accordance with GB and ASTM standards for testing, and in line with national environmental inspection requirements, if enterprises do not know how to carry out testing can directly to the testing technicians to provide third-party inspection reports. For products that need to be exported, they should also comply with stringent environmental standards for packaging materials in the European Union and North America.
In addition, there is a part of the vacuum bag is made of plastic particles, such as this kind of particle-like plastic materials can be divided into ordinary plastic, engineering plastic and special plastics three. Its performance is opaque, silvery, shiny, with good barrier, heat seal, light-shielding, high and low temperature resistance, oil resistance, fragrance, softness and other major characteristics, because of the cheap and durable, so it is also more common on the market.
