In the collection effect of Taiwan, the preservation method of heat shrinkable film is favored by many collectors because of its wide range of application. Explain the specific operation method of heat shrinkable film for you.
    Tool
Bottle mouth heat shrinkable sealing film, bottle body heat shrinkable film, hair dryer / hot air gun / heat shrinkable machine (choose one of the three)
Operation method
Step 1: take a piece of special heat shrinkable film for bottle mouth and put the wine nozzle into the heat shrinkable film as shown in the figure below.

Step 2: use the micro hot air of the hair dryer to blow it at a uniform speed. Since the rubber cap of Maotai liquor is also made of heat shrinkable material, be careful when using the hair dryer. Don't blow it for too long to avoid deforming the rubber cap. (the effect after the bottle mouth shrinks is shown in the figure below)

Step 3: after sealing the bottle mouth, cover the wine bottle with a large bottle body film, and finally screw the lower bag buckle slightly, as shown in the figure below.

PS: if the bag is long, the lower part can be appropriately subtracted, but do not cut it too long, so that the bag is too short to completely wrap the bottle body after heat shrinkage.

Step 4: use a hair dryer to blow hot air back to the bottle body from top to bottom. The wine bottle rotates back and forth, and the hair dryer moves up and down. When the heat shrinkable film is flat, blow down the bottom of the bottle, and the film sealing task has been completed. You can also blow the bottom of the bottle a little first, and then blow the bottle body. The operation is more convenient.

After the overall heat shrinkage is good, the effect is good.