| 摘要 |
<p>A method for removing chewing gum or similar substances such as glues, mastics, gluey residues etc. which are dried or crushed on a support using very low temperatures and liquid gas for example. The invention consists in pouring a small amount of liquid gas (6) inside a frame (1), whereby the base of said frame is slightly dampened, and which is placed on the support (3) surrounding the chewing gum. The intense cold which results from the evaporation of the liquid gas (6) modifies the structure of the chewing gum which retracts, becomes brittle and can then be easily removed by detaching it with the aid of a scraper or by breaking it using a small hammer and subsequently suctioning it after it has been brushed. The inventive method can be used on substances that are similar to chewing gum.</p> |
