Vacuum bags are widely used in all walks of life:
1. Food packaging: rice, meat products, dried fish, aquatic products, bacon, roast duck, roast chicken, roast pig, frozen food, ham, bacon products, sausages, cooked meat products, kimchi, bean paste, spices, etc.
2. Hardware and electronics: suitable for packaging of circuit boards, electronic products, mechanical parts, consumer goods, industrial products, etc.
3. Pharmaceutical packaging: vacuum bags are suitable for large machinery and equipment, chemical raw materials, pharmaceuticals and other packaging.
How to control the thickness of vacuum bags:
1. Vacuum bag thin and thick symmetry is the key to the thickness and symmetry of the film in front of the composite. That is, the reason why it is light and thin quality is to achieve the premise of improving its quality.
2. The high barrier of the plastic film of the vacuum bag is closely related to the thickness of its plastic film.
3. The uniformity of the thickness of the plastic film of the vacuum bag endangers the tensile properties of the plastic film machinery and equipment. Good thickness uniformity of aluminum foil bags plastic film can obtain good packaging printing accuracy and lamination quality.
4. For the same inner material, the greater the thickness of the vacuum bag film, the higher the start-stop heat sealing temperature, and vice versa. In other words, the vacuum bag film thickness is uniform, you can get uniform nail quality and prevent some heat sealing hidden problems.
From the above introduction can be found, the vacuum bag is mainly made of a variety of plastic film by the bag-making machine combination of bags. Like the vacuum bags currently on sale in the market mainly use four-layer structure design, with good water and oxygen separation function. In addition, for the quality of qualified vacuum products, the production process must be tested according to GB and ASTM standards, and in line with national environmental testing requirements, if the enterprise does not know how to test the cocoa directly to the testing technicians to provide third-party test reports. For products that need to be exported, they should also meet the strict environmental standards for packaging materials in the EU and North America.
In addition, there is a part of the vacuum bag is made of plastic granules, such as this granular plastic materials can be divided into ordinary plastic, engineering plastics and special plastics which are three. Its performance has opaque, silver-white, anti-gloss, with good barrier, heat sealing, shading, high and low temperature resistance, oil resistance, fragrance, softness and several other characteristics, due to the cheap and durable, so it is also more common in the market.
Post time: Oct-22-2021