Are thicker vacuum bags better? A professional flexible packaging manufacturer tells you!
Release time:2019-11-12
Many clients when customizing packaging bags, have a very limited understanding of the thickness of vacuum bags, and will specifically emphasize the use of thicker vacuum bags, believing that thicker vacuum bags are of better quality. However, in reality, thicker isn't always better. Different sizes of vacuum bags require different thicknesses, and thicker vacuum bags also cost more. For example, aluminum foil vacuum bags ， use aluminum foil material, which is not cheap. If the vacuum bag is too thick, it will lose its softness. If folded during storage, it will easily break. Furthermore, in low temperatures, excessively thick vacuum bags become brittle and easily crack. To save costs, the professional flexible packaging manufacturer Shunxingyuan Packaging is here today to tell everyone how to choose the appropriate thickness for vacuum bags.
1. The vacuum bag thickness and thickness uniformity mainly depend on the thickness and uniformity of the single-layer film before vacuum bag compounding. In other words, controlling the thickness quality of the single-layer vacuum bag film is a prerequisite for obtaining qualified finished product thickness quality. 。
2. The barrier properties of the vacuum bag film are closely related to the thickness of the vacuum bag film (generally proportional to the thickness). Vacuum bag films with good uniformity can achieve uniform and stable barrier properties.
3. The uniformity of the vacuum bag film thickness directly affects the mechanical tensile properties of the film. Vacuum bag films with good thickness uniformity can achieve better printing register accuracy and lamination quality.
4. For vacuum bag films with the same inner layer material, a higher thickness means a higher initial heat sealing temperature, and vice versa. In other words, vacuum bag films with uniform thickness can achieve more uniform sealing quality and avoid local poor heat sealing.
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