Reasons for controlling the thickness of vacuum packaging bags

　　The vacuum packaging bag has many advantages such as moisture-proof, rust-proof, deoxygenation, fragrance preservation and effectively extending the product retention period. It is welcomed by merchants in the market, but the cognitive concept of the vacuum packaging bag thickness is thin, and the thickness is completely different according to the size of the vacuum packaging bag. So what is the reason for controlling the thickness of the vacuum bag?

　　1. The thickness and uniformity of the finished vacuum bag mainly depend on the thickness and uniformity of the monolayer film before composite, that is to say, the control of the thickness and quality of the vacuum bag monolayer film is the premise of obtaining the qualified thickness and quality of the finished product.

　　2. The barrier of the vacuum bag film is closely related to the thickness of the vacuum bag film (generally proportional to the thickness). Good uniformity of vacuum bag film can obtain uniform and stable barrier property.

　　3. The thickness uniformity of vacuum bag film directly affects the mechanical tensile properties of the film. Good thickness uniformity of vacuum bag film can obtain good printing accuracy and composite quality.

　　4. For the vacuum bag film of the same inner material, if the thickness is high, the heat sealing temperature is high, and vice versa. In other words, the composite vacuum bag film with uniform thickness can obtain uniform sealing quality and avoid poor local heat sealing.

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