What are the advantages and disadvantages of can opener?

Lyman can opener has achieved a revolutionary breakthrough in working principle and process design, which has aroused strong response once it came out. In the long history, it has only experienced a relatively important improvement. Melamine tableware belongs to polymer, and its monomers are formaldehyde and melamine. Melamine resin does not cure at room temperature, and generally needs 130~ 150℃ thermal curing. The advantages of pottery pots are that they are not corroded and are not easily affected by external temperature, and the storage period of articles in pottery pots can be very long. Disadvantages are bulky and fragile.

The two-wing bottle opener was invented by the British in 1888 and is still in use today, mostly for families. This bottle opener is labor-saving, but most of the time it takes two turns to open the bottle, and the cork will break. It is not recommended to use wine with high opening year. The rabbit-shaped bottle opener is named after the handle above it looks like a rabbit's ear. This bottle opener is labor-saving and the cork is not easy to break, but it is bulky and bulky. Because before cans appeared, people could open them with tools around them. With the improvement of living standards, in order to make people's lives more convenient, can openers have also appeared.

Can opener, or can knife, is a tool for opening cans. The original cans were opened with a knife or chisel. 1858, American Ezra Warner applied for a patent for can opener. William Lehman invented a can opener with wheels in 1870. Families usually rely on manual can openers that can be neatly put into drawers, or simple electric can openers of standard-sized food cans bought at local grocery stores.

As a space-saving option, this can opener can easily remove the blade and handle. Industrial models of manual and electric can openers are usually used in restaurant kitchens. These larger manual can openers are usually installed on a chopping board or counter, and may include an adjustable body, allowing the equipment to adapt to cans of various sizes and shapes.