Paper box and paper box blank
A technology of cartons and blanks, applied in the field of cartons and carton blanks, which can solve problems such as difficult to reuse, poor sealing, poor heat preservation, etc., to achieve the effect of ensuring dryness and sanitation, and improving airtightness
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[0029] As an embodiment of the present invention, No. 2 airbag 215 is installed on the opposite surfaces of No. 1 saw tooth 211 and No. 2 saw tooth 212; 216 communicates with two No. 2 airbags 215 through No. 1 channel 217 respectively; By the tight fit between No. 2 airbag 215 and the tower-like projection 224, further prevent the plugging and disengagement of left box cover 21 and right box cover 22; During operation, the two No. 2 airbags 215 installed on the opposite surfaces of the No. 1 sawtooth 211 and the No. 2 sawtooth 212 are squeezed by the No. 3 sawtooth 221 with tower-shaped protrusions 224 on the surface, so that the two No. 2 airbags 215 The gas inside is pressurized and flows along the No. 1 channel 217 to the No. 1 chamber 216. The gas pressure inside the No. 1 chamber 216 increases due to the increase of gas. The bump 224 increases the surface roughness of the No. 4 sawtooth 222, so that the fit between the No. 4 sawtooth 222 and the No. 2 airbag 215 is tight...
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