Dongguan factory candy box of candy box requirement is venting requirements:

Dongguan candy box manufacturers to ensure that the seal before candy boxes, dongguan candy box manufacturer will air in the box out as far as possible, make the seal after vacuum box forming part of the process.General vacuum inside the box in the 250 ~ 450 MMHG.Exhaust is the purpose of:

(1) to prevent the growth of aerobic bacteria and mold growth;

(2) to prevent or mitigate sterilization by heating air to expand and make container deformation or damage, especially cause edge pressure is too large, which affects its sealing;

(3) control or lighten the box of candy in the storage tank wall corrosion;

(4) to avoid or reduce the change of food color, aroma, taste;

(5) to avoid damage to the taste of candy and shape;Help to avoid the use of false tank for corruption alterative bilge tank.

Exhaust method usually has three kinds

: (1) thermal exhaust method, using the principle of thermal expansion, air, steam and food will tank air out.Hot charging tank sealing and heated exhaust food canning two methods;

(2) the method of vacuum sealing and exhaust, closing in vacuum environment;

(3) steam injection can sealing method of exhaust, when closing to the canned headspace injection steam, will air out and seal.