How much curing time does it affect the packaging bag?
Release time:
2021-02-25
The main processes of plastic packaging production are printing-compounding-curing-slitting-bag making-quality inspection and shipment, in which curing is also one of the keys to the quality of plastic packaging bags,
The main processes of plastic packaging production include printing-compounding-curing-slitting-bag making-quality inspection and shipment. Curing is also one of the keys to the quality of plastic packaging bags. Curing time is determined according to the characteristics and use requirements of adhesives used during compounding. The higher the heat resistance and medium resistance requirements of adhesives during processing and use, the curing time should be extended accordingly, for example:
General light packaging ordinary adhesive, under the condition of 50~55 ℃ curing 24h can meet the requirements of use. For example, the general food packaging OPP/CPP,PET/PE material.
The contents of a certain resistance requirements, the use of anti-media functional adhesive composite film, should be under the condition of 50~55 DEG C curing 36h or more. For example, the general food packaging using PA/PE,PET/AL/PE material.
③ the use of boiling resistant adhesive, and in the processing of boiling requirements of the composite film should be 50~55 ℃ under the condition of curing 48h or more. For example, PET/AL/PA/PE materials used in spicy foods.
The use of resistance to cooking adhesive, and in the processing of cooking requirements of the composite film should be under the condition of 50~55 DEG C curing 72h or more. For example, the steaming conditions of meat packaging using PET/AL/PA/RCPP,PET/AL/RCPP material.
In the actual production, occasionally encounter customers to the time limit for a tight customer anxious to use, manufacturers will be based on experience and use requirements to adjust the curing time, but the production side or recommended curing to the specified time is good, although the bag peel strength difference is not big, but the bag temperature resistance and corrosion resistance is not the same.
In addition, the aging time must be continuous, not intermittent after aging accumulation. The curing temperature must also be guaranteed. All aspects of satisfaction in order to avoid the risk of defective products, to provide customers with high-quality assured packaging.
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