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Numéro de publicationUS3322325 A
Type de publicationOctroi
Date de publication30 mai 1967
Date de dépôt30 janv. 1962
Date de priorité30 janv. 1962
Numéro de publicationUS 3322325 A, US 3322325A, US-A-3322325, US3322325 A, US3322325A
InventeursBush Roy L
Cessionnaire d'origineBush Roy L
Exporter la citationBiBTeX, EndNote, RefMan
Liens externes: USPTO, Cession USPTO, Espacenet
Bag seal utilizing pressure sensitive tape having weakened transverse zones
US 3322325 A
Images(1)
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Description  (Le texte OCR peut contenir des erreurs.)

May 30, 1967 BUSH 3,322,325

R. I... BAG SEAL UTILIZING PRESSURE SENSITIVE TAPE HAVING WEAKENED TRANSVERSE ZONES Filed Jan. 30, 1962 FIG. 1.

INVENTOR ROY L. BUSH FIG.4. BY 7 wkMm/fi ATTORNEYS United States Patent Ofi ice 3,322,325 Patented May 30, 1967 3,322 325 BAG SEAL UTILIZING IRESSURE SENSITIVE TAPE HAVING WEAKENED TRANSVERSE ZONES Roy L. Bush, 260-04 58th Ave., Little Neck, NY. 11362 Filed Jan. 30, 1962, Ser. No. 169,796 3 Claims. (Cl. 229-62) This invention relates to a pressure sensitive tape particularly adapted for sealing bags or the like, and to a method for applying the same to said bags.

Many commodities are presently vended in polyethylene bags or the like, the upper end of which is gathered to form a neck around which is placed a pressure sensitive tape. This tape is generally made of a treated paper base material for strength, to prevent accidental or premature severance of the tape, one side of the tape having a pressure sensitive adhesive applied thereto. While this tape provides an efiicient sealing means, it has been found that, when the contents of the bag are to be removed, it is virtually impossible to pull the tape off, or tear it in two, without ripping the bag, thereby destroying its storage usefulness.

It is an object of this invention to provide a pressure sensitive tape for placement around the gathered neck of a bag or the like, to seal the latter, the seal being readily broken to permit facile opening of the bag and removal of the contents without tearing the bag.

Another object is to provide a pressure sensitive tape of the character described having transverse weakened zones at spaced intervals to permit the tape to be torn apart at the locus of the neck of the bag, for opening the latter.

A further object is to provide a method of applying pressure sensitive tape having uniformly spaced, transverse weakened zones to the neck of a bag, comprising placing the central section of a length of the tape around the neck, aligning the weakened zones of the terminal portions of the tape, and securing the terminals of the pressure tape together.

Other objects of the invention will be manifest from the following description of the present preferred form of the invention, taken in connection with the accompanying drawing.

FIG. 1 is a fragmentary front plan View of pressure sensitive tape made in accordance with the present invention;

FIG. 2 is a rear plan view of the same;

FIG. 3 is an elevational view of a bag, illustrating the application of the pressure sensitive tape of the present invention thereto, for sealing the bag;

FIG. 4 is a fragmentary elevational view similar to FIG. 3, showing to advantage the manner of securing the tape to the bag;

FIG. 5 is a view similar to FIG. 4, showing the manner of tearing the tape to open the bag, for removing the contents;

FIG. 6 is a top plan view of the tape per se after it is applied to the bag in a manner shown in FIG. 4;

FIG. 7 is a similar view showing the terminal portion of the tape wrapped around the main body of the bag; and

FIG. 8 is a top plan view of the tape per se in the partially torn condition shown in FIG. 5.

Referring now in greater detail to the drawing, there is shown in FIGS. 1 and 2, a tape 10 of predetermined length which may be in roll form or cut into strips as desired. Tape 10 is preferably made of a paper base material which has been treated for greater strength in order to prevent accidental or premature tearing thereof during, or subsequent to, application to the bag. As shown in FIG. 2, a pressure sensitive adhesive coating 11 is applied to one side of the tape to permit facile application of the tape to a bag. In accordance with the objects of the present invention, tape 10 is provided with a plurality of uniformly spaced transverse perforations or weakened zones 12 which extend entirely across the width of the tape. Perforations 12 serve to make the treated tape more pliable for use in accordance with the present invention and also to permit ready severance thereof both for application to the bag for sealing and for tearing of the tape when it is desired to open the bag.

In FIGS. 3-8 there is illustrated the manner of applying the tape of the present invention to a bag designated 13, which bag may be made of polyethylene, paper or any other suitable flexible material. In accordance with the objects of the present invention, the bag is gathered near its open end to form a neck 14 around which the central portion 15 of a predetermined length of tape 10* is placed. By virtue of the pressure sensitive adhesive 11 on one side of the tape, central portion 15 readily adheres to the neck of the bag. As shown in FIGS. 4 and 6, the terminal portions of the tape designated 16 and 17 extend outwardly from the neck of the bag and are adhered together in such a manner that transverse perforations 12 are aligned. This forms a tear strip designated 18.

It is within the contemplation of the present invention to extend the extreme terminal portion 17 beyond that of portion 16 as indicated at 17. This permits portions 16, 17 and 17' to be wrapped around central portion 15 with the adhesive coated side of terminal portion 17' adhered to main body portion 15 to hold the tape terminals in wrapped positions. This effects a more aesthetic appearance while at the same time effecting a tighter seal on the bag.

When it is desired to open the bag for removal of the contents, terminal portion 17 is first lifted out of adhesive engagement with central portion 15 and portions 16 and 17 returned to the position shown in FIG. 6. Tear strip 18 is then severed along aligned perforations 12 at the juncture of main body portion 15, in the man ner illustrated in FIG. 8. In most instances, this action is all that is necessary to complete opening of the bag. However, at times, the remaining terminals of the tape are still lightly sealed, in which event the seal is readily broken by spreading the upper terminals of the bag to pull the terminals apart.

With the process and apparatus of the present invention the sealing of bags is quickly and efficiently effected. Additionally, opening of the 'bag is greatly facilitated without ripping the latter and thereby destroying its storage usefulness.

It is further within the contemplation of the present invention to secure tape 10 to the gathered neck of the bag by adhesively securing the terminals thereof in such a manner that perforations 12 are not aligned. Also, if desired, the terminals of the tape may be coextensive or the terminals may be haphazardly overlapped and secured together. The terminals need not be wrapped around neck portion 15, as disclosed in FIG. 7. Whether perforations 12 are aligned or unaligned, the tape may be broken by pulling the bag apart :at the locus of the neck portion of the tape. This causes the tran verse severance along a perforated line 12, the particula point of the break being the weakest point of the tape. Therefore, when the bag is opened in this manner, the tape may be torn at the point indicated in FIGS. 5 and 8 or at a point on the periphery of neck portion 15. Various other changes may be made within the scope of the claims hereto appended.

What is claimed is:

1. In a bag of flexible material open at one end, sealing means therefor adapted for engagement with a neck portion of the bag formed by gathering the latter near the open end thereof, the sealing means including a flexible tape having a pressure sensitive adhesive coating on one side thereof and having spaced transverse weakened Zones, the intermediate part of said tape encircling the neck portion of the bag, the terminals of said tape being adhered together, whereupon the exertion of stress along a weakened zone at the locus of the neck portion causes the tape to break and permits opening of the bag.

2. In a bag of flexible material open at one end, sealing means therefor adapted for engagement with a neck portion of the bag formed by gathering the latter near the open end thereof, the sealing means including a flexible pressure sensitive tape having transverse weakened zones comprising equi-spaced perforations coextensive with the width of the tape, the intermediate part of said tape encircling and being secured to the neck portion of the bag, the terminals of said pressure sensitive tape being adhered together with the transverse perforations thereof being aligned in opposed relationship, thereby forming a tear strip, to facilitate severing of the tape along a weakened zone at the locus of the neck portion of the bag.

3. The sealing means of claim 2 wherein the extreme end of one terminal portion of the pressure sensitive tape extends beyond the other, to permit the joined terminals of the tape to be wrapped around the neck portion of the bag and the extended terminal adhered to another portion of the tape.

References Cited UNITED STATES PATENTS 1,793,328 2/1931 Bombard et al. 2417 2,194,220 3/1940 Elder 2417 2,508,855 5/1950 Brown 161-88 2,779,851 1/1957 Vogt 21919 2,805,183 9/1957 Higgins 154-406 2,849,171 8/1958 OBrien 22919.58

ALEXANDER WYMAN, Primary Examiner.

EARL M. BERGERT, Examiner.

R. J. ROCHE, Assistant Examiner.

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Classifications
Classification aux États-Unis383/71, 53/419, 24/30.50P, 24/30.50R, D09/706, 24/16.00R, 53/417
Classification internationaleB65D63/10
Classification coopérativeB65D63/1009
Classification européenneB65D63/10A