US2120629A - Air and moisture proof rip seal for packages - Google Patents

Description

June 14, 1938. H. SCHUNEMANN AIR AND MOISTUREPROOF RIP SEAL FOR PACKAGES ori inal Filed Jan. 9, 1936 Patented June :14, 193B UNITED STATES PATENT: OFFICE Am. AND MOISTURE PROOF arr SEAL Foa' PACKAGES Heinrich Schiinemann, Berlinespandau, Germany, assignor toHans Neuerburg, G. in. b. 11.. I. Cologne-on-the-Bhine, Germany Original application Jannary 9, 1936,'Serial No.

Divided and this application February I 23; 1937,.Serial N0. 12l,303. InGermany apnl 2 Claims.

foil, which is provided on the inner side with a layer of glue and carries on this glued side a narrower strip, for instance of metal foil or a plurality of spaced strips or cords (of hemp) which serve as ripping strips or cords .so that when the'package is opened, not the entire seal strip surrounding the opening joint is tomofi but only the middle part of the strip which is covered by the ripping cords or ripping strips.

According to the invention, the end of the seal strip, which overlaps the beginning of the seal strip when the latter has enveloped the opening joint, is covered for instance by a strip of paper so'tha't the overlapped end of the seal strip does not adhere thereto. Two slots are also formed therein at a distance from the ripping cords or strips on the seal strip so that the overlapped end of the seal strip is lifted along the said two slots and when exerting a further pull, the tearing is enacted along the ripping strips or cords around the opening joint. 'In order that the place where the overlapped end of the seal strip is to be gripped by the fingers may be made easily recognizabie, an outer visible mark of another color is applied thereto.

The construction of the seal strip and of .the

box or package provided therewith is' shown by way of example in the accompanying drawing, in which:-

Fig.1 is a side elevational view of the improved rip seal applied to a box or package,

Fig.4 is an enlarged transverse sectional view on line Ill-II of Fig. 1,

Fig. 3 is a top plan view of acontainer provided with the improved seal strip,

Fig. 41s an enlarged sectional detail through a portion of the container in a direction along the line IV-IV of Fig; 3, r

Figs. 5 and 6 are end elevational details of the arrangement shownin Fig. 3.

Similar characters of reference are employed in all of the above described views to indicate corresponding parts.

The seal strip for the rip seal is made from an air and moisture proof strip i, for instance, from a viscose strip as shown in Figure 1. The strip i which surrounds the opening joint of the box andis provided on the inner side with a layer of glue is ripped by a narrow ripping strip placed on this layer of glue or as shown in Figure l by a plurality of coi'ds 2 layer of the said strip. .In order to obtain a completeair-tight closure of the seal strip around the box, it is advantageous to use a glue or adhesive which is diluted with a volatile solvent.

The overlapping end Ib. of the seal strip i (see for instance Figure 3) is covered on the glue side by a special unglued strip of paper 3 so that the embedded ,in the adhesive overlapped end cannot adhere to the beginning of the strip- I. Slots 4 are provided in the region of the said end and in the vicinity of the edges of the ripping strip or the outer ripping cords on this overlapped end lb. In order, that the slotted part of the end lb of the seal strip is made easily recognizable for gripping when it is desired to open the box, a special seal mark 5 is attached to the slotted end (see Figure 1 and'particularly Figure 5). As indicated in Figure 6; the seal is' ripped up along the inner ripping strip or ripping cords 2 of the seal strip i as soon as the slotted 'part of the overlapping end lb is gripped by the fingers andthe seal is ripped up in the manner shown in Fig. 6.

Particular reference is made to Figs-'7 -to 1'? of the parent application wherein means is shown for mechanically producing the present air and moisture proof rip seal. It is believed in view of. the foregoing that a further detailed description of" the operation of the invention is entirely unnecessary. Likewise it is believed that the advantages of the invention will 'be readily apparent.

' Having thus fully described the invention what is claimed as new and desired to be secured by Letters Patent is:-

1. In a package such'as a cigarette box, an

air and moisture-proof sealing strip having an adhesive coating on one surface thereof and surrounding the box so as to cover the opening joint thereof, a narrower ripping strip arranged on the adhesive side of the sealing strip, a strip of paper covering the adhesive coated end of the sealing strip which overlapsthe first end of the sealing strip when the same is arranged around the packarranged in the end of the sealing strip; said slots being spaced apart at a distance approximately equaltothe width of the ripping strip.

2. A rip seal according to claim 1 characterized by the fact that the gripping tongue is rendered recognizable by a mark applied to the end of the sealed strip which overlaps the end of the first strip.

HEINRICH scnuumarm.

. w CERTIFICATE 0F comcnon;

.Patent no; 2,12o,629.- 3 June 11;, 1933.

HEINRIGH scmmmnn. It is-h'ereby certified tfil it the m; a: the a'asignee inthe above" numbered patent. was erroneously writ ten and print eq e; "HenaNeuerbm-g G. hi.. b H." whereae aaid'name shouldhalve been written-end printefl as Hans Neuerburg, G. m; b. 3., of colegne-oh-the-Rhine,Germeny: as shown by the record ofass igmne nt's in 1:111; offi e; v end that the said Letters Patent should be z 'ead w iththiel cerreetion therein that the same may conform to the record of tlie ease in the- Patent Office.

Signed and.eealed this iz'lfih day of Sept'ember,- L "D. 1958;

Henry .Van Ars'dele (Seal) leting comi'aaione'fof Petent zg.

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