Packaging box for microwave puffed cereal

Abstract

The invention provides a packaging box for microwave-puffed grain, which comprises a barrel for the placement of the grain and an internal bag arranged on the barrel, wherein the barrel comprises a round bottom wall, a sidewall extending upward in a gradually expanding form from the circumferential edge of the bottom wall and an edge extending outward from the circumferential edge of the top end of the sidewall, the barrel comprises two layers of food oil-proof paper and a high-heat-absorption material stuck between the two layers of food oil-proof paper, the internal bag is of a bag-shaped structure, which is formed by folding a rectangular nonwoven fabric and the top end of which is open, the internal bag is arranged in the barrel, the bottom end of the internal bag covers the grain in the barrel, the circumferential edge of the top of the internal bag is fixedly connected with the inner wall of the barrel by heat sealing, a plurality of non-fixed areas are formed between the circumferential edge of the top end of the internal bag and the edge of the barrel, and each non-fixed area is shaped like a triangle which is gradually shrunk outward from the inner side of the edge. Since the non-fixed areas are arranged on the packaging box for the microwave-puffed grain, pressure and vapor in the barrel can be released to the outside via the non-fixed areas, and thereby the pressure in the barrel is prevented from being overhigh to burst the sealed part.

Description

technical field [0001] The invention relates to a packaging box for puffed food, in particular to a packaging box for microwave puffed grains. Background technique [0002] Puffed cereals such as popcorn are popular among young people as daily snacks. In order to eat this type of puffed cereal food more conveniently, a packaging box for making this type of food has emerged as the times require. Cereals are placed in this packaging box, and the upper opening of the packaging box is sealed. When you need to eat popcorn, you only need to put the popcorn packaging box with grains in the microwave oven. After being heated by the microwave oven, the grains become Popcorn, very convenient to use. The existing packaging boxes for puffed grains have certain defects. Due to the expansion of the grains after heating, the pressure inside the packaging box is too high, which will easily cause the sealing of the upper opening of the packaging box to explode, and then cause the popcorn t...

AI Technical Summary

Problems solved by technology

[0003] The invention proposes a packaging box for microwave puffed grains, which solves the problems of easy explosion caused by excessive pressure in the packaging box in the prior art

Images