THERMO-SEALING CONTROL METHOD AND PACKAGING FOR RESEALABLE PACKAGING Russian patent published in 2018 - IPC B32B7/12 B65D75/58 B29C65/02 C08J5/18 

FIELD: packaging.

SUBSTANCE: invention relates to the field of packaging and relates to a method of thermal insulation inspection and packaging for resealable packages. Method includes controlling the seal strength between two cooperating thermo-sealable films at predetermined sealing portions, where a predetermined amount of heat is applied over a predetermined period of time. Resulting packaging is resealable after the first separation of two surfaces. Strength of the seal controlled by defining the number and dimensions of a plurality of restricted areas without a material cover that is resistant to the thermo-seal effect. Restricted area can be defined with a plurality of dots of predetermined selected shapes and dimensions. Resulting article facilitates the rupture of the packaging along a predetermined path. With this process, a fixed predetermined heat and residency time can be chosen and the seal strength can still be varied in different areas of a packaging. Non-sealable microdots with a predetermined amount of adhesive deposits also covered by a polypropylene powder deposit permit its resealing.

EFFECT: invention provides the creation of resealable packages while maintaining the tightness of the seal after opening.

17 cl, 8 dwg