Stock material or miscellaneous articles – Layer or component removable to expose adhesive
Reexamination Certificate
1999-08-19
2001-09-18
Ahmad, Nasser (Department: 1772)
Stock material or miscellaneous articles
Layer or component removable to expose adhesive
C040S638000, C428S041900, C428S042100, C428S192000, C428S194000
Reexamination Certificate
active
06291044
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to packaging tape that can be easily and conveniently removed from a package to facilitate opening of the package.
Modern plastic film tapes exhibit significant tensile strength and holding power. While this attribute insures package integrity, it often presents a problem when the package must be opened. Often a knife is required to be inserted between panels of the package and thereafter drawn between the panels to slit the tape. Unfortunately, this opening procedure often damages the goods internally of the package.
The aforesaid problem was recognized heretofore by C. H. Ames who discloses a solution to the problem in U.S. Pat. No. 1,827,636. Ames provides a sealing tape having an adhesive along only the outer edges thereof leaving a non-adhesive strip down the center of the tape. A tab is provided at one end of the sealing tape in the center portion thereof to facilitate removal of the tape from the package. The solution presented by Ames is not totally acceptable, however, since the non-adhesive tab at one end of the tape is subject to being caught by other packages or objects resulting in stripping of the tape from the package. Moreover, the strength of the tape is compromised by the lack of adhesive at a critical area thereof, namely, the area that overlies the space between adjacent flaps or edge portions of a package.
Yet another solution to the problem of opening a tape sealed package without tools is offered by Vogt, U.S. Pat. No. 2,703,764. However, Vogt solves this problem by weakening a portion of the tape to effect rupture thereof and facilitate subsequent removal of the tape from the package. Obviously, integrity of a package is compromised by an easily rupturable tape.
SUMMARY OF THE INVENTION
The aforesaid problem is solved, in accordance with a preferred constructed embodiment of the present invention, by a novel packaging tape, one entire surface of which is capable of being secured to a package but that can be quickly separated therefrom without the use of a knife or other tool.
In its preferred form, the invention comprises a packaging tape made from, for example, a strip of polypropylene film. An adhesive, for example, an acrylic or rubber based adhesive is applied to one side of the tape. The adhesive is applied to only the surface of the film and is of a chemical makeup that does not etch or penetrate the film thereby maintaining the full structural integrity of the film. The holding power of the adhesive along one longitudinal edge of the tape is reduced by coating the adhesive on one edge portion thereof with an adhesive attenuator. The attenuated adhesive facilitates lifting of the edge portion of the tape from the package thereby to facilitate removal of the entire tape from the package. Thus, the relatively simple procedure enabled by the present invention obviates the need for cutting of the tape by a knife or other tool to effect opening of the package.
REFERENCES:
patent: 1827636 (1931-10-01), Ames
patent: 2307406 (1943-01-01), Howard
patent: 2350185 (1944-05-01), Pero
patent: 2565509 (1951-08-01), Marcin
patent: 2599410 (1952-06-01), Probst
patent: 2703764 (1955-03-01), Vogt
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patent: 5401547 (1995-03-01), Blackwell
patent: 5466501 (1995-11-01), Logan
patent: 5468533 (1995-11-01), Lipson
patent: 6117262 (2000-09-01), Moulds et al.
Ahmad Nasser
Begin Laurence C.
Dinnin & Dunn P.C.
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