Vacuum rice packaging is currently a popular form of rice packaging in the market. There are two other types of rice packaging: non-vacuum and bulk rice. Vacuum-packed rice can often be stored for a longer period of time. It is a mainstream packaging form. This type of packaging The material is also called PE rice bag film. First of all, what is vacuum rice bag packaging? Vacuum rice bag packaging is to take the air out of the rice bag packaging to form a vacuum, and use the pressure difference between the inside and outside of the bag to form the original loose rice into a regular rice brick packaging form, and the packaging material used is PE rice bag film. Why are vacuum rice bags popular now? The traditional rice packaging bag has a lot of air, good air permeability, and the rice is easy to flow. Over time, the rice is easy to breathe and deteriorate. However, the rice in the vacuum rice bag is in a glued state (the negative pressure in the bag is above 2000pa), which effectively isolates oxygen, so it is not easy to Bad breath. At the same time, whole grains have always represented a good harvest and auspiciousness. Exquisite vacuum rice bag gift boxes are fashionable and meaningful as gifts, so vacuum rice bag packaging is becoming more and more popular, and the market space is huge. Many bag factories and rice factories have seen this trend and have adopted vacuum rice bag packaging. As the saying goes, cherries are delicious but hard to grow. There are three major problems in vacuum rice bag packaging, none of which are easy to solve. 1. Air leakage: No matter on the packaging line or on the supermarket shelves, the vacuum rice bags have air leakage to varying degrees. The main reasons are heat seal strength and bag structure; 2. Exploding bags: Due to unreasonable corner design or external force or falling, vacuum rice bags sometimes burst. Exploding bags will bring great troubles to production, circulation and consumption; 3. Odor of PE bottom film: Consumers are very sensitive to food odor. The odor of the rice bag mainly comes from the odor of the PE bottom film and the odor of the composite glue. In order to improve the anti-drop performance of rice bags, metallocenes are generally added to the PE bottom film, resulting in odor. In addition, the poor quality of solvent-free composite glue can easily lead to odor. The use of PE rice bag film can solve these three problems well. PE rice bag film characteristics: excellent composite strength, toughness, puncture resistance, effectively prevent air leakage; good flexibility to prevent bag bursting; reasonable formula greatly reduces the odor of the bottom film. At the same time, PE rice bag film has excellent physical properties; excellent thermal adhesion and low temperature heat sealing; good low temperature storage resistance; excellent transparency and gloss.
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