초록 ▼

A recoverable seal for sealing a container, especially an artillery ordinance cannister, comprising a heat-shrinkable continuous annular band having a uniform coat of heat-activatable adhesive on the inwardly-facing surface thereof which has a mean thickness of 0.01 to 1.0 mm and differs from the me

A recoverable seal for sealing a container, especially an artillery ordinance cannister, comprising a heat-shrinkable continuous annular band having a uniform coat of heat-activatable adhesive on the inwardly-facing surface thereof which has a mean thickness of 0.01 to 1.0 mm and differs from the mean thickness over the surface by at most 25% of the mean thickness. The band may be provided with a tearable region such as a score line to enable it easily to be peeled off the container. After the band has been recovered on the container, the band can be peeled away and a layer of adhesive will remain aiding the ability of the seal to withstand pressurization and depressurization.

대표청구항 ▼

A removable seal for a metallic substrate which comprises a heat-shrinkable continuous annular band having a tearable region therein and a uniform coat of heat-activatable adhesive on the inwardly facing surface thereof, which adhesive has a mean thickness in the range of from 0.01 to 1.0 mm, and di

A removable seal for a metallic substrate which comprises a heat-shrinkable continuous annular band having a tearable region therein and a uniform coat of heat-activatable adhesive on the inwardly facing surface thereof, which adhesive has a mean thickness in the range of from 0.01 to 1.0 mm, and differs in thickness from the mean thickness over the surface by not more than 25% of the mean thickness, and will adhere to a metallic substrate in preference to the band so that, after the band has been recovered onto a metallic substrate, the band can be peeled away from the substrate and a layer of adhesive will remain on the substrate.