Card-inserting packaging refers to the packaging form of inserting paper cards and transparent foam shells folded over three sides. Its characteristics are that no packaging equipment is needed when packaging, only workers need to place products, foam shells and paper cards in place.

Attention should be paid to the following issues:

1. Paper cards and folded bubble shells are suitable in size. If they are too tightly inserted, the paper cards and bubble shells will be deformed; if they are too loose, they will be easily detached.

2. When the product is overweight, it is necessary to fix the paper card and bubble shell with staple in a certain position.