Plastic film package with adhesive closure for wrapping various products
OwnerHerman Brian Elias Mourainventor
Life of this patent
Estimating the term…
Abstract
Obtained from a thermoplastic film (1), having the outer side (1A) with corona treatment and distributes breakable lines (2), between which segments (3A-3N) are configured, each of which includes a signaling mark (4) of the “zero” position of each package, a first layer of medium adhesion adhesive (5), two (second and third) layers of high adhesive adhesion (6A) and (6B), between which is that breakable line (2); It also includes a protective/guide strip (7) that extends over the two layers of high-adhesion adhesives (6A) and (6B), where one of its ends is permanently glued, while its opposite end is folded into a hook (8) which, in turn, is siliconized on the face that fits over the high-adhesion adhesive layer (6B).
Claims13
A plastic film package for wrapping products, comprising:
- a continuous thermoplastic film having an upper surface treated to control surface tension;
- a plurality of tear lines formed in the film, the tear lines extending in a transverse direction and equidistantly spaced along a longitudinal direction defining a plurality of identical package segments;
- each package segment including:
- at least one position mark indicating a starting position of the package segment;
- a first adhesive layer of medium adhesion disposed on an upper surface of a trailing end of the package segment and extending from a respective tear line;
- a second adhesive layer of high adhesion disposed on and having a shorter length along the package segment in the longitudinal direction than that of the first adhesive layer and a shorter width than that of the package segment in the transverse direction;
- a third adhesive layer of high adhesion disposed on an upper surface at a leading end of the package segment;
- a protective guide strip formed of a plastic liner material and extending over the second adhesive layer of the package segment and the third adhesive layers of an adjacent package segment across the respective tear line, wherein the protective guide strip is permanently bonded to the third adhesive layer of the adjacent package segment and includes an opposite end folded downward and inward to form a hooked tab, the hooked tab having a siliconized surface facing the second adhesive layer of the package segment;
- wherein each tear line is surrounds the second adhesive layer of high adhesion in a plan view, each tear line including:
- a transverse intermediate straight portion extending between the second and third adhesive layers and substantially corresponding to the width of the second adhesive layer;
- parallel portions extending perpendicularly from opposite ends of the intermediate straight portion and substantially corresponding to the length of the second adhesive layer;
- deflecting portions extending transversely outward from the parallel portions so as to define a tab segment that surrounds the second adhesive layer in the plan view;
- and
- wherein upon pulling an initial package segment to separate the initial package segment along a tear line from a following package segment, a front end of the protective guide strip is released from the second adhesive layer of the initial package segment, while a rear end of the protective guide strip remains permanently bonded to the third adhesive layer of the following package segment.
Dependencies are inferred from the claim text.