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US 2015/0089905 A1Published application
Thermo-sealing control method and packaging for resealable packaging
OwnerNelson Luis Bertazzo Teruelinventor
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OwnerNelson Luis Bertazzo Teruelinventor
Estimating the term…
A packaging and method for 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. The resulting packaging is resealable after the first separation of two surfaces. The 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. The restricted area can be defined with a plurality of dots of predetermined selected shapes and dimensions. The 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.
A process for controlling the seal strength between two cooperating thermo-sealable films comprising the steps of:
A packaging for products including at least one sealing portion formed with two cooperating thermo-sealable surfaces of two respective films, one of said surfaces being partially covered in discrete separate areas with a material having predetermined thermal insulation characteristics thereby resulting in a selectively defined plurality of non-sealable areas, with a controlled predetermined thermal seal strength in said non-sealable areas when a predetermined amount of heat is applied over a predetermined time period and a predetermined number of said non-sealable areas include a predetermined amount of a cooperating adhesive deposited thereon covered by an electrostatic deposit of polypropylene powder that binds with said other surface upon the application of said heat.
Dependencies are inferred from the claim text.