External semi bubble shell packaging for vacuum formed foam shells

Bubble shell is a transparent plastic made by vacuum forming process to create a specific protruding shape from a transparent plastic hard sheet, which covers the surface of the product and can protect and beautify the product. Also known as bubble hood or vacuum hood.
What should be noted for external semi bubble shell packaging?
The full meaning of the external semi bubble shell packaging is that the product is completely external to the double bubble shell, which only encapsulates the paper card and serves as the bottom support for the product head. The product is connected to the bubble shell with plastic straps. Its characteristic is that it requires a high-frequency machine to seal the edges of the double bubble shell and drill tie holes on it, which has the lowest efficiency and high packaging cost, but can meet the needs of users to touch the product.