DUST-FREE HEAT SHRINKABLE PACKAGE Russian patent published in 2021 - IPC B65D33/00 

FIELD: packaging.

SUBSTANCE: invention relates to dust-free heat shrink package. Heat-shrinkable package contains a heat-shrinkable tubular film having a heat-sealed back layer which is heat-sealed to itself, has a thickness of at least 2.54 microns and consists of a polymer composition containing a polyolefin with an average density of less than 0.92 g/cm3, this heat-sealed layer contains 2000 ppm of release agent particles with an average particle size of 3 microns, a rapidly protruding release agent, a slow protruding release agent and an outer layer. Package may be dust-free and passes the standard opening test. Also described is a dust-free package with a low maximum or instantaneous coefficient of friction, a node containing a set of overlapped packages attached to belts, and a rotary chamber packaging method using the packages. Package may be dust-free.

EFFECT: ability to provide tubular films and packages with the desired low friction and anti-adhesion properties without the use of dust.

15 cl, 33 dwg, 31 tbl