US2836343A

US2836343A - Tear strip means for opening cartons and the like

Info

Publication number: US2836343A
Application number: US587576A
Authority: US
Inventors: Will Theodore
Original assignee: FUND DEL Inc
Current assignee: FUND DEL Inc
Priority date: 1956-05-28
Filing date: 1956-05-28
Publication date: 1958-05-27
Anticipated expiration: 1975-05-27

Description

M y 1958 T. WILL 2,836,343

TEAR STRIP MEANS FOR OPENING CARTONS AND THE LIKE Filed May 28, 1956. 4 Sheets-Sheet 1 INVENTOR. THEODORE Wlu.

HTTUENEY May 27, 1958 T. WILL. 2,836,343

TEAR STRIP MEANS FOR OPENING CARTONS AND THE LIKE Filed May 28, 1956 4 Sheets-Sheet 2 I "E INVENTOR. 56 27 E I THEODORE WILL E 5. 20 MW HTTUHNEY T. WILL May 27, 1958 TEAR STRIP MEANS FOR OPENING CARTONS AND THE LIKE Filed May 28, 1956 4 Sheets-Sheet 3 INVENTOR. THEODORE Wm. MW

M y 1958 T. WILL 2,836,343 TEAR STRIP MEANS FOR-OPENING CARTONS AND THE LIKE Filed May 28, 1956 v4 Sheets-Shet 4 I ll 22 91 INVENTOR.

5 THEODORE WILL HTTUHNEY rates TEAR 3TH MEANS FDR OPENING CARTONS AND THE LIKE Theodore Will, Syosset, N. Y., assignor to Fund-Del Ind, Syosset, N. Y., a corporation of New York Application May 28, 1956, Serial No. 587,576

2 fliaims. (Cl. 229-51) This invention relates generally to quick opening packages such as cartons, cigarette packs and wrappers made from cardboard, aluminum foil, tin foil, plastic or any other fibrous sheet material such as disclosed in my patent No. 2,533,255 and my copending applications Serial No. 458,324 filed September 27, 1954, now Patent No. 2,789,752 Serial No. 469,689 filed October 6, 1954, now abandoned and Serial No. 557,578 filed January 5, 1956.

A principal object of the present invention is to provide a carton originally sealed but openable to form a reclosable container, with means for guarding the contents of the container after it has been opened. Another object of the invention is to provide a carton or the like having overlapping glued flaps which carton may be easily opened and which may have the top thereof folded back for discharging or displaying the contents.

A further object of the invention is-to provide a carton or the like with an inner closure or liner and with a tear strip between the closure and the carton, said tear strip being separate from the material of the carton.

Still another object of the invention is to provide a carton or the like with an inner closure or liner and with a separate tear tape interposed between said closure or liner and the inner surface of the material of the carton and being removable to form a hinged cover.

it is also an object of the invention to provide in conjunction with the openings means, a reinforcement for the margins of the slotted areas of the carton when opened.

Yet another object of 'the invention is to provide a carton or the like having a tear strip for opening the carton which remains attached to. the carton when the carton is open.

it is also proposed to produce a readily openable carton which is simple in construction and which can be manufactured and sold at a reasonable cost.

For urther comprehension of the invention, and of the cts and advantages thereof, reference will be had to the following description and accompanying drawings, and to the claims in which the various novel features of the inver'ion are more particularly set forth.

in the eccentric lg drawings forming a material part of dismosure:

Fig. l is a front perspective view of a carton in closed condition embod ing one form of the invention.

Fig. 2 is a sun view but showing the carton in open conen.

Fig. 3 is a rear pet's ective view in open condition.

. Fig, 4 is a detail perspective view of the closure or liner.

Fig. 5 is an enlarged vertical sectional view taken on the plane of the line 55 of Fig. 1.

Fig. 6 is a front perspective view of a carton in closed condition, embodying a modified form of the invention.

Fig. 7 is a similar view showing the carton in open condition.

Fig. 8 is a horizontal sectional view taken on of the line 3-3 of Fig. 6.

Fig. 9 is a top plan view of the reinforcing closure or liner spread out flatwise.

Fig. 10 is a top plan view of the tear tape spread out flatwise.

Fig. 11 is a perspective view of the tape spread out but showing the tear strip partly pulled out.

Fig. 12 is a front perspective view of a carton in open condition, embodying another modified form of the invention.

Fig. 13 is an enlarged horizontal sectional view taken through the top of the carton along the tear strip.

Fig. 14 is a fragmentary longitudinal vertical sectional view taken through the center of the carton in closed condition.

Fig. 15 is a top plan view of the tear tapeispread out.

Fig. 16 is a front perspective view of a carton in open condition, embodying a still further modified form of the invention.

Fig. 17 is an enlarged horizontal sectional view taken through the top of the carton along the tear strip.

Fig. 18 is a fragmentary top plan view in flatwise condition of the blank from which the carton of Fig. 16 is formed.

Fig. 19 is a perspective view of a modified form of combined reinforcing liner and tear tape in partly opened condition.

Fig. 20 is a perspective view of a further modified form of combined reinforcing liner and tear tape in partly opened condition. V

Fig. 21 is a perspective view or" a carton embodying a still further modification of the invention.

Fig. 22 is a cross-sectional view taken on the plane 0 the line 22-22 of Fig. 21.

Fig. 23 is a similar view of Fig. 21, but illustrating a still further modification of the invention.

Referring in detail to the drawings, in Figs. 1 to 5, inclusive, the first form of the invention is shown embodied in a carton made from fibrous sheet material, such as cardboard or the like. The carton may conveniently be formed from a single blank scored and cut to form the front wall 20, rear wall 21,

side walls

22 and 23, bottom wall 24, top wall 25 and a flap 26 for joining the rear wall and adjacent side wall 22 together as disclosed in my copending application Serial No. 557,578 filed January 5, 1956.

According to the present invention, a reinforcing closure band or liner 27 formed of material similar to the material of the carton or of any other suitable material is superposed on the inner surfaces of the front and side walls of the body of the carton, at the top of the body, one end edge of the closure or liner abutting against the inner surface of the rear wall 21 and the other end thereof abutting against the edge of the flap 26. The top edge of the closure or liner 27 abuts against the inner surface of the top wall 25. The closure or liner 27 is of a width to extend inwardly of the top wall an appreciable distance and said liner is fastened along its inner edge to the inner surface of the front and the plane I It will, of *course, be understood by those f the art that the contents; to be carriedby'the carton are introduced therein prior to the V completev assembly a V f o a 7 side walls by a suitable adhesive as indicated at 2S,the remainder of the linerbeing unattached.

' The front wall Ziland the

sidewalls

22 and 23 are formed with spaced upper and lower parallel weakened closure or liner 27. v 1 V ;Interposed between, the inner reinforcing closure or liner-27' and the outer front and side, walls of the carton,

there is a separate narrow thin tape 34 of plastic oriother suitable material which is employed as a tear-tape or cutter-tape. The tape 3% is of approximately the same width as the space or weakened zone between the lines 3d and 31 and is secured to the inner surface'of therna V terlal of the front and side walls of the carton behind said weakened zone by a coating of adhesive 35, the

adhesive serving as ea reinforcing'agent. Tape 34 has-one end securedtto one end edge of the closure or liner 27 as indicated at 36, the remainder of the tape being 'un-' attached, to said closure or'liner. Further tape 34 extends along the whole length of the space or weakened zone between saidlines and 31 and projects through an opening 'between'the rear wall 21 and side wall'22, extending a short distance beyond the rear edge of the side, wall 22 as shown in Fig. 1 so :that th estape projects a short distance beyond ,therear wallso as to provide a tab 37 which can'be readily gripped betweenthe fingers of the hand of the user. The tab 3,7,i1orrnally lies in the plane ofthe'rear wall 21 of the'carton and isnot apt. to be dislodged during ordinary handling, yetmay be readily lifted out by inserting a fingernail on pointed instrument between the tab and rear wall; v e 'ar with thereof. a s

In order to open my'novel carton all that'need be done is to grasp the tab 37 and pull the tape 34 along its line i of anchorage between the weakened

lines

30 and 31 in a counterclockwise direction as viewed'in Fig. 1, the' cutouts 32 and 33 facilitating the tearing operation, with the result that the strip of material ofthe' front and side walls overlying the tape 34 is turnoff said wallstogether with thetapet34, thereby separating thecarton into a body section 46 and a hinged cover section, 41, the rear wall 21 forming a hinge connection along the fold line 43 for the cover section; The crosscut42at. the top of' theflap It will be noted that when the covercsection 41 is moved to open position as shown in Fig. 2,,the closure or lin'erl27 extends above the top end edges of the front and side" walls offthe'carton. In order 'to reclose the'cartornthecover section 41 isswung inwardly to' a'seatyoverithe;

' 22 as shown in'Figi 6, V V v r p Similarly to the form of Figs. 1 to 5, inclusive, when 7 the tear strip 53 is pulled; vin this instance, in a clockwise,

and 23'. The tape is secured to the inner surface of the material of said walls but is not attached to the liner 27. The tape is commensurate in dimensions with the liner 27' and overlaps the same. Midway its top and bottom long edges, the tape 54) is formed with upper and lower

parallel slits

51 and 52, respectively, extending from a point closely spaced from one end to and through the opposite end thereof, thereby forming a tear strip 53 which extends beyond said opposite end thereby providing a tab 54 for gripping between the fingers. -However, the tab 54 need not extend beyond the end wall 23', a

but may be recessed in a cut-out portion thereof. .The tear strip 53 is positioned in'register with the weakened zone in the carton formed by the

perforated lines

30 and 31 with its tab 54 projecting outwardly through an opening formed between the rear wall 21 and end wall direction as' viewed in Fig. 6, the carton is opened providing a body section 40 and a cover section 41'. However, the portion 55 of the tape 50 above the tear strip 53 adheres to the inner surface of the material of the cover section 41 forming the downwardly extending flanges thereof, and the portion 56'of saidtape 50 below the tear strip 53 adheres to the front and side walls of the body section 40, thereby reinforcing said sections, alon their marginal edges. V

In allfother' respects, the form of invention shown in Figs. 6 toll, inclusive, isvthe same'as the form shown in Figs. 1 to 5, inclusive, and similar reference numerals are used to indicatesimilar parts. 7 V

The modification of the invention shown in Figs. 12 to 15, inclusive, differs from the form shown inFigs; '6 to 11, inclusive, in that the inner closure orliner27" is omitted. Inthisform also,; the solid or intact end 60 of the tear strip 50 is provided with a weakened'linefl V thereacross' in line'with the uppersslit 51" and said solid end 60 isbentinwardly; The'bent-end 60 is secured to i the inner surface of the material of therear wall 21" at' its top, adjacentthe side wall 22", so that whenthe tear tape53't' is" torn away-from the body of the'carton to cover section 41", and the portion below the slitf52" 5 26 permits this separationof'th'e carton into a: 7 body section and a cover section.

closes the top of. the'carton,'the closure or liner acting.

as'a closure member to closethegapbetween thetlowerr' end edge ofthe cover. sectionandfihetop' endedgesiiof f the'front and side wallstof'thercarton, thereby guarding? 7, ,thescontents of the container.: 11'

, V The modified'form of carton shownin F igs.'6: to 11, 7 f inclusive, differs from thelform. of. invention shownint 'Fig's. 1 to 5,'inclusive, intthatrinstead'ofaznarrowtearr tape 34;; a? Wide tear taper. Sit is; interposed between-the" Q I liner27 and the: frontawall 2s and 111s. end; walls; 221':

w open'the carton andthe cover section 41" is. swung backwardly, the portion 62 abovethe line 61 of said solid end 60 adheres to thesurfacesof the material formingtherear'fla'nge' of the cover section 41". The portionv above theislit '51", adheres to the'inner surface of the adheres to the inner surface of the material of the front and side walls 'of the body' section 40 as shown in Fig. 12, thus serving as a permanentreinforcement for the margins of bothihe body and cover sections;

In all other respects, the form of invention shown in Figs. 12 to 15, inclusive, is similar to the form shown in 7 Figs. 6 toll, inclusive, and similar, referencenumerals are used to indicate similar parts.

Themodification of the invention shown in Figs 16 to 18, inclusive, differs from the form of invention shown in Figs. 1 to 5, inclusive, in that no inner closure or liner 27 is provided and the inner end of the tear tape 34 is secured to'the inner surface of side wall 23' at its juncture with the rear wall 217.: In all other respects,'it is the same and similar reference numerals are f used to indicate similar parts. 1

' It will be understood-that instead of providing car-e; 1 ton with separate inner closure or liners and tear-tapes;

such asi shownjin the form of invention of Figs. 6 to 11, inclusive, integrally formed combined closures or liners and tear tapes' may be provided such' as shown in the modificationsaof Figs. 19 and '20. #In Fig; 1 9, 21 com-.

bined closure or liner and tear tape jis shown comprising an elongated strip of fibrous; material, such as cardboard,' or other suitable material. This strip fold ed midway its ends dividing the strip into a closureor liner member 71 and a tear tape 72 joined at one end along the fold line 73. The tear tape 72 is formed with parallel upper and lower parallel slits 74 and 75, respectively, extending from a point closely spaced from the fold line 73 to and through the opposite end of the section, thereby forming a tear strip 76, said tear strip extending beyond the end of the tape thereby providing a finger grip or tab 77.

In applying this form of combined closure or liner and tear tape 70 to the carton, the lower edge of the closure or liner 71 is secured to the inner surface of the lower edge of the tear tape 72, the remainder of the closure or liner being unattached. The tear tape 72 is secured to the inner surface of the material of the front and side walls of the carton, with the tear strip 76 disposed in alignment with the weakened zone formed by the parallel perforated lines in the front and side walls of the carton, and with its tab 77 protruding outwardly of the carton. In use, when the tear tape strip 76 is pulled across the front and side walls of the carton, the carton will be opened forming a body section and a hinged cover section in the manner of the form of Figs. 6 to 11, inclusive, with the portion of the tear tape above the slit 74 adhering to the cover section and the portion below the slit 75 adhering to the top margin of the body section for reinforcing said sections.

In the modification shown in Fig. 20, the combined closure or liner and tear tape 78 comprises an elongated strip of suitable fibrous material folded longitudinally thereby dividing the strip into a closure or liner member 79 and a tear tape 80 joined along one long edge as indicated at 81. The tear tape 80 is formed with upper and lower parallel slits 82 and 83, respectively extending from a point closely spaced from one end thereof to and through the opposite end of the tape, thereby forming a tear strip 84, said tear strip 84 extending beyond the end of the tape thereby providing a finger grip or tab 85.

in applying the combined closure or liner and tear strip 78 to the carton, the closure or liner 79 and the tear tape 80 are held in face to face relationship by suitable adhesive along the lower edges of their abutting faces. The tear tape St) is secured to the inner surface of the material forming the front and side walls of the carton, with the tear strip 84 disposed in alignment with the weakened zone formed by the parallel perforated lines in said front and side walls of the carton. In use, when the tear strip 84 is pulled across the front and side walls of the carton, the carton will be opened forming a body section and a hinged cover section in the manner of Figs. 6 to 11, inclusive, the portions above and below the strip adhering to the cover section and body section of the carton, respectively.

Referring now to the modification of the invention shown in Figs. 21 and 22, the carton shown herein is formed of fibrous sheet material and is rectangular in horizontal section and rectangular in vertical section, of the type used for packaging paper napkins, tissues and like sanitary articles. The carton may conveniently be formed as usual from a single blank scored and cut to form the top and

bottom walls

90 and 91, respectively,

side walls

92 and 93 and end walls 9 and 95. The end walls are formed by overlapping flaps secured to gether by suitable adhesive.

In accordance with the present invention a tear tape 96, similar to tear tape 59, is secured to the inner surface of the top wall for the entire length of the wall along the center thereof by suitable adhesive. Along its center, the tear tape is formed with parallel slits 97 and 98 extending from a point closely spaced from one end to and through the opposite end thereof, thereby forming a tear strip 99 which extends beyond the end wall 95 of the carton to form a tab 100 for gripping between the fingers. The top wall 90 is scored or perforated along both long edges of the tear strip 99 as indicated at 101 toensure that the desired portion of the top wall is removed by the tear strip. After the tear strip is torn and the carton is opened, the material of the tear tape on both sides of the tear strip adhere to the marginal edges of the opening thereby reinforcing said marginal edges.

In Fig. 23 the tab is shown flush with the side of the container, and an arcuate finger opening 102 is shown to facilitate the gripping of the free end of the tab 100'. In other respects this form of the invention is similar to the previous forms and the corresponding parts may be recognized by similar reference numerals with a prime added.

It is to be understood that the length and width of the

liners

27 and 27, tape 56,

tape portions

53, 55 and 56, strip 59'', tape 70, liner 99 and all parts thereof may be changed as desired.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and that various changes and modifications may be made within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent is:

1. A carton or the like formed of flexible fibrous or like sheet material having an enclosed hollow body with a front wall, rear wall, side walls, top walls and bottom wall, said body having an opening between the rear wall and one of said side walls, said front and side walls being formed with a pair of parallel weakened continuous lines forming a weakened zone thereacross, a stiif liner member positioned along the inner surface of the material of said front and side walls and extending above and below said parallel weakened lines, the edge of said liner member below the lowercost line being secured to the material of said front and side walls, the remainder of said liner member being unattached, and a tear tape secured to the inner surface of the material of said front and side walls and overlapping said liner member, said tear tape being formed with spaced parallel slits therealong from a point adjacent one end thereof to and through its opposite end, in line with the weakened lines in the walls of the carton, said slits forming a tear strip for opening the carton and providing a body section and a hinged cover section, one end of said strip being unattached and protruding outwardly of the opening in the body for grasping by the fingers, the portions of said tear tape above and below the slits serving to reinforce the slitted marginal edges of the cover section and body section, respectively, upon tearing of the tear strip to open the carton.

2. A carton or the like formed of flexible fibrous or like sheet material having an enclosed hollow body with a front wall, rear wall, side walls, top wall and bottom wall, said body having an opening between the rear wall and one of said side walls, said front and side walls being formed with a pair of parallel weakened continuous lines forming a weakened zone thereacross, a stiff liner member positioned along the inner surface of the material of said front and side walls and extending above and below said parallel weakened lines, the edge of said liner member below the lowermost line being secured to the material of said front and side walls, the remainder of said liner member being unattached, and a tear tape secured to the inner surface of the material of said front and side walls and overlapping said liner member, said tear tape being formed with spaced parallel slits therealong from a point adjacent one end thereof to and through its opposite end, in line with the weakened lines in the walls of the carton, said slits forming a tear strip for opening the carton and providing a body section and a hinged cover section, one end of said strip being unattached and protruding outwardly of the opening in reinforcegthe" slitted marginal edges of the cover seetion and body section,respective1y,upon tearing of the tear strip to' open the carton, said" liner membei xextending above thetear line'upon openingrof the carton. toprovide' a flange 'thereabove, said flange being positioned in the H path of movement of the hinged cover section upon retraction of said covel section whereby said cover section' is adapted to seat' on said flange for reclosing the ca rton; 1

,fRefere'nces Cited in the file of patent:

iJNITiEDiSTATES'PATENTS 290,953: 7 ,Reberjul-"e-r ma-i- ;Oic 1 19. 1,882,124 Dienst et 1; 0jq, 11, 1932 2570;079; Schmidt n r Feb. 20, 1945' 2,467,875 Andrews Ap :,;19; 1949I 2,665,834 7 ,Anglada Jan. 12, 1954 2157934 9" Mullinix e May 25, 1954