Which is better for customizing PE or PET materials for vacuum packaging bags?

PET vacuum packaging bags have excellent mechanical properties, high rigidity, hardness, and toughness, puncture resistance, friction resistance, high and low temperature resistance, chemical resistance, oil resistance, air tightness, and good fragrance retention. PE vacuum packaging bags have good gloss, high tensile strength, tensile strength, as well as good heat resistance, cold resistance, oil resistance, and organic solvent resistance. They have excellent wear resistance, puncture resistance, and are relatively soft. They have excellent oxygen resistance. PE is better than PET in strength and puncture resistance, but its price is higher than PET. So, which is better for customizing PE or PET materials for vacuum packaging bags?

PET vacuum packaging bag material:

PET, also known as polyethylene terephthalate, is a colorless and glossy transparent substance (amorphous) or an opaque milky white substance (crystalline). Difficult to ignite and burn, but once burned, although the flame is separated, it can still continue to burn. When burned, it will melt and burst into fragments, with a yellow flame and early blue edges. There are small droplets falling, black smoke, and a slightly sweet and irritating odor in the mountainous area. The performance of pure PET is very poor, especially in terms of impact strength and heat resistance, but after being reinforced with fiberglass, various properties are greatly improved.

PE vacuum packaging bag material:

PE stands for polyethylene, which appears milky white and green. A crystalline plastic with a density of 0.91-0.96g/cm3. Polyethylene has mechanical strength, but compared to other plastics, its mechanical strength is low and its surface hardness is poor. Excellent insulation performance, polyethylene is insoluble in a known solvent at room temperature, and is resistant to dilute sulfuric acid, dilute nitric acid, and other acids, as well as various concentrations of alkali and salt solutions. Polyethylene has high water resistance and its properties can remain unchanged after long-term exposure to water. Polyethylene has poor water permeability, while it has good permeability to oxygen, carbon dioxide, and many organic matter vapors. Polyethylene will age and become brittle under the action of heat, light, and oxygen. The typical operating temperature for high-pressure polyethylene is around 800C, while for low-pressure polyethylene it is around 1000C. Polyethylene can withstand cold and still has good mechanical properties at -600C- It still has good softness at 700C.

In summary, when it comes to customizing vacuum packaging bags, which material is better, PE or PET? This needs to be determined based on the product's requirements for packaging bags. PET material vacuum packaging bags are colorless, transparent, and glossy vacuum packaging bags, and are one of the commonly used transparent composite vacuum bag substrates. The outer material commonly used for steaming and cooking packaging has good printability. PE material vacuum packaging bags have good transparency and are suitable for greasy foods, meat products, fried foods, vacuum packaged foods, steamed foods, etc. The above introduction about the material of vacuum packaging bags is organized by Jinde Packaging. If there are any details in the above introduction, please consult 15902743510