Bento boxes are also called fresh-keeping boxes, disposable lunch boxes, and disposable lunch boxes. There are three types of fresh-keeping boxes: one is plastic fresh-keeping boxes: made of resin materials, general temperature resistance range: to high temperature 120℃ to low temperature -20°C, one is tempered glass fresh-keeping boxes: ordinary glass tempered, the latter It is a heat-resistant glass fresh-keeping box, using high borosilicate glass material. As consumers pay more and more attention to health, people are concerned about whether the materials used in the crisper itself are healthy. Hygienic and safe materials are harmless to the human body, such as PC materials, PE materials and PP materials. The more common fresh-keeping box materials are PP materials. Plastic crisper can not be put into microwave and oven, because plastic will produce harmful substances to human body under high temperature.
Different shapes store different things, making it more convenient to use. In addition to the common squares, rectangles, and circles, there are also suits designed for picnics, making life easier and more convenient. Square packing box: Excellent sealing performance, suitable for storing food, preventing peculiar smell in the refrigerator, suitable for storing various condiments, leftovers, leftover cans, fruits, and vegetables. It is convenient to put in refrigerators, freezers, microwave ovens, and can also be used for other purposes. Rectangular packing box: suitable for storing bacon and meat food. Thanks to the water receiving plate, it is easy to store food with moisture. The large-capacity rectangular fresh-keeping box is suitable for storing fruits, vegetables and seafood. Round packing box: suitable for long-term storage of various condiments, canned fruits, grains, nuts, tea and other foods, and it is convenient to put in refrigerators, freezers, and microwave ovens. The oblong design is suitable for storing beverages, children's milk and various grains, nuts and tea during wild trips. High-tube packaging box: suitable for storing long foods such as noodles and cucumbers. Because the height of the high-tube crisper is higher than that of ordinary crisper, the processing technology requires high mold size and mold release, so it can be produced in the market. There are not many manufacturers of high-tube fresh-keeping boxes and relatively few products.

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