Fresh-keeping boxes play a big role in our lives, and the preservation of things is inseparable from the refrigerator and the role of fresh-keeping boxes.
Fresh-keeping boxes are generally made of transparent or translucent materials. In particular, the heat-resistant glass fresh-keeping box is made of high borosilicate glass, and the glass is transparent. The crisper has high requirements for heat resistance, will not deform in high temperature water, and can even be sterilized in boiling water. Generally speaking, the crisper has superior impact resistance, it is not easy to break when under heavy pressure or impact, and will not leave scratches.
There are three kinds of fresh-keeping boxes: one is the plastic fresh-keeping box: made of resin material, the general temperature resistance range: the highest temperature is 120 °C, and the lowest temperature is -20 °C. One is a tempered glass fresh-keeping box: ordinary glass is tempered, and the last is heat-resistant glass fresh-keeping box, which is made of high borosilicate glass material.
The airtightness of the crisper determines the rate of deterioration of the ingredients, and the airtightness is related to the material of the main body and the lid. Both the box body and the lid are made of plastic, and high sealing performance can be achieved with or without a silicone sealing ring; the design of a glass crisper with a lid to increase the sealing ring is still no better than that of the same plastic crisper.