Bento boxes are also called fresh-keeping boxes, disposable lunch boxes, disposable lunch boxes, etc. There are three kinds of fresh-keeping boxes: one is plastic fresh-keeping box: made of resin material, the general temperature range: high temperature 120 ℃, low temperature -20 ℃, one is tempered glass fresh-keeping box: ordinary glass tempered, and then there is another It is a heat-resistant glass fresh-keeping box, which is made of high borosilicate glass.

As consumers pay more and more attention to health, people are concerned about the health of the materials used in the crisper itself. Hygienic and safe materials are harmless to the human body, such as PC materials, PE materials and PP materials. Now the more common fresh-keeping box materials are PP materials. Plastic crisper boxes cannot be placed in microwave ovens and ovens, because plastics will produce substances that are harmful to the human body at high temperatures. In addition, tempered glass crispers may explode when exposed to extreme cold and extreme heat. The current very fashionable and green crisper is the Pyrex crisper.

Different shapes store different things and are more convenient to use. In addition to the common squares, rectangles, and circles, there are also suits designed for picnics, which make life easier and more convenient.

Square packing box: excellent sealing performance, suitable for storing food, can prevent peculiar smell in the refrigerator, suitable for storing various seasonings, leftovers, leftover cans, fruits, vegetables. Easy to use in refrigerators, freezers, microwave ovens, and other uses.

Rectangular packing box: suitable for storing bacon and meat food. Due to the water catch plate, it is easy to store food with moisture. The large-capacity rectangular crisper is suitable for preserving fruits, vegetables and seafood.

Round packaging box: suitable for long-term storage of various condiments, canned fruits, grains, nuts, tea and other foods, easy to use in refrigerators, freezers, and microwave ovens. The oval design is suitable for storing beverages, children's milk and various grains, nuts and teas, etc. when traveling in the wild.

High-cylinder packaging box: suitable for storing long-shaped food such as noodles and cucumbers. Because the height dimension of the high-cylinder fresh-keeping box is higher than that of the general fresh-keeping box, the processing technology has high requirements on the size of the mold and the removal of the mold, so it can be produced in the market. There are not many manufacturers of high-cylinder fresh-keeping boxes, and there are relatively few products.

The above is the correct way to use the lunch box, I hope it can help everyone. When buying plastic lunch boxes, you can also choose a suitable plastic lunch box according to your own needs, don't choose blindly!

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