Does the blister box have a shelf life? The design of plastic packaging boxes such as fruit fresh-keeping boxes is more and more widely used in our social life. Blister packaging box is a general term for producing plastic products by the blister process and packaging the products with corresponding equipment. The blister packaging box sheet is heated at high temperature, vacuumed and cooled to form a plastic box. Blister blister The blister is heat-sealed on the surface of a paper card with blister oil, which is often used in common supermarket battery packaging. Its characteristic is that a blister sealing device is required to encapsulate the product between the paper card and the blister. The blister tray adopts the blister process to make the plastic hard sheet into plastic with a specific groove, and the product is placed in the groove to protect and beautify the product. There are also transport-type tray packaging. Convenience is the main thing. If we do it once, maybe they won’t buy a little bit. If you buy a batch, how long will it last? Does the blister box have a shelf life? In fact, plastic packaging boxes such as fruit fresh-keeping boxes actually have a shelf life for students. The use and specific ingredients are also different, and the shelf life is also different. Generally, the shelf life of plastic is 2 to 4 years.
Some Chinese plastic packaging boxes indicate the date of production activities and the shelf life of the company, but there are also some main products that do not, perhaps just choose one.
How to improve the judgment of whether the purchased plastic packaging box is in the shelf life? In fact, these can be seen directly with the naked eye.
Plastics have passed some shelf life, and some engineering plastics have become brittle, yellowed, and cracked. These problems are all manifestations of the expiration of plastics in my country, but these can only be seen on hard plastics. Regarding fresh-keeping bags and garbage bags Waiting for soft plastic, it is not easy to be found when it has expired.
So, can plastic packaging boxes that have passed the shelf life still be used for continuous learning? Plastic packaging products for food such as crisper boxes and milk bottles are not only related to people’s physical and mental health. Such as plastics and their products, even if they have expired, the impact of the formation is not very large.
Do not expose to high temperature for research. Perhaps the data preservation and management are not scientific and reasonable, which will further accelerate the aging of construction plastics and shorten the shelf life of plastics.