US2668769A - Paper package and method of manufacture - Google Patents

Description

Feb. 9, 1 R. w. SCHLIENZ PAPER PACKAGE AND METHOD OF MANUFACTURE Filed Sept. 27,1951

FIG. 3

FIG.;I 5 (FI Patented Feb. 9, 1954 UNITED STATES PATENT OFFICE PAPER PACKAGE AND METHOD OF MANUFACTURE Application September 27, 1951, Serial N 0. 248,475

Claims. (Cl. 99-171) This invention relates to paper packages and more particularly to envelopes or pouches, usually of small size, to contain pulverulent material or various small articles. It is customary to use such envelopes to contain individual servings of cocoa or chocolate powder used at fountains, and also such envelopes are used for confections, nuts and the like, and, in the hardware trades, to hold small hardware articles such as screws and washers.

In paper envelopes of this sort, as heretofore constructed, difiiculty has been experienced in providing for a facile and quick opening of the package as well as an opening which is unobstructed so that entire contents, powdered material for example, may be quickly discharged from the envelope.

The principal object of the invention is to provide an envelope construction which overcomes these difficulties and which also can be manufactured easily on the present types of automatic envelope making and filling machines.

Another object of the invention is to provide, as a new article of manufacture, a paper stock web of suitable construction for feeding to an automatic envelope machine for the manufacture and filling of the improved package.

A further object of the invention is the provision of a novel method of making a paper envelope or pouch in quantity production from a continuous web of paper stock.

The invention will be understood from a consideration of the accompanying drawings and the following detailed description thereof.

In these drawings Fig. 1 is a diagrammatic, perspective view illustrating a step in the manufacture of the paper stock web which is also the first step in making the improved envelope.

Fig. 2 is a view showing the paper stock web formed by the uniting of the two web portions as illustrated in Fig. 1.

Fig. 3 is a view similar to Fig. 2 showing the two web portions partially folded.

Fig. '4 shows the folded web with a plurality of partially formed envelope sections.

Fig. 5 is a perspective view of a completed and filled envelope as it leaves the automatic filling machine.

Figs. 6, 7 and 8 are views in front elevation showing the steps in opening the improved envelope package.

Fig. 9 is a perspective view of a store counter rack'holding a number of the filled envelope packages. I

Fig. 10 is an enlarged fragmentary view of a 5 detail.

Referring now to these drawings, the first step in making the improved package is to provide the paper stock web shown in Fig. 2 and indicated generally by reference number I. This web consists of two portions of different width, for example, thenarrower portion 2 and the wider portion 3 overlapped along one edge margin as indicated at 4, and having these overlapped margins adhesively secured together by a band of adhesive 5, which is narrower than the overlap and spaced from one edge thereof to leave afree margin 6.

Such a paper stock web may be made as indicated in Fig. 1. Here the wider web portion 3 is unwound from a magazine roll I and thenarrower portion 2 is unwound from a magazine roll 8. Theband 5, by which theweb portions 2 and 3 are adhesively secured together is preferably formed by means of a thermoplastic adhesive, and furthermore, it is desirable to employ forweb portions 2 and 3, a paper sheet material which is of a heat sealing type.

Accordingly,web portions 2 and 3 from magazine rolls 8 and I respectively, may be fed as shown in Fig. 1 to a heat sealing mechanism which comprises a heated and continuously rotated roller 9 cooperating with which is a support In, for example, in the form of a horizontal rod, which may. also be heated. The two overlapped webs are drawn between heating roller 9 and support Ill by any suitable means (not shown), and as the overlapped portions pass the heating roll 9, which is suitably disposed with respect to the margins of the paper, and which. also is of the desired width, the two overlapped margins will be adhesively joined along theband 5. The paper stock web thus made may be wound upon a take-up roll and stored for later use, or the web may be fed directly to an automatic envelope making machine, or a combined envelope making and filling machine.

It will be understood that liquid adhesive or any appropriate and convenient type of adhesive may be used in place of the heat sealing type above described in' causing the two web portions to be adhesively secured together along theband 5, but such adhesive should form a tearable seal as set forth in greater detail later on.

The next step in making the envelope is to fold the wider web portion 3 about that margin of thenarrow web portion 2 which is proximate to the adhesive band 5., This is indicated in Fig. 3 where the two portions are' shown in partially folded position. In Fig. 4 the folding ofportions 2 and 3 fiat against one another has been completedand the next step in the formation of a series of envelopes from the folded web is indicated. This next step consists in adhesively securing the two web portions or sections together crosswise by equally spaced bands, I I. This may be done by adhesive applied in any convenient manner, for example, prior I to folding along the overlapped margin 4, ifdesired, or by heat sealing in a manner similar to the heat sealing of thewebbed portions 2 and 3 together.

along theband 5. The folded web I is then cut into sections midway of each of.;-the.;-adhesive,

bands II, as indicated by the dot and dash lines in Fig. 4, one of these sections being indicated by reference numeral I2.

When such a section I 2 has been cut from-the,

web, the improved envelope of the invention is ready for filling. This envelope is thus composed of the twoweb portions 2 and 3, which are adhesively secured together along the bottom by theband 5, and along each vertical side margin by one-half of the adhesivebands II leaving the,

adhesive 5, being narrower than the width of he Overlap 4nd 5 peed: r e. th ed of thewider web portion 3, leaves the exposed free margin I5, which may be used as a pull-tab in opening the package. 'If-the web portions are s ed ether r ss ise by heat sealing, the ends ofthe overlapped tabii will be simultaneously secured to the webbed portion- 2 for its full width. If the webbed'portions are secured together by adhesive a appliedprior to folding along the overlapped margin}, the'ends of the overlappedtab 6 will be separately secured toportion 2 at the opposite sides of the band by adhesive in order to form a pocket behind the free margin or pulltab, 6 and to obtain a complete sealing of the package at thatend.

Consequently, when the package is held, for m e e na e an 'th b E i ra p d by the other to open the package, a pull on this tab will first cause the separation of the adhesively joined-areas at the ends oi the tab, as

shown in Fig. 7. However, substantially siniul taneously with this separation, the tab separates from the outer wallof the paekage lon the dhe i a d .5 and a qee imied. p niunqntab 6 redu e qm leta e a atieei a hewai i Fig. 8, of these formerly adhesivel joinedareas. n. F 7 he e kae a ears, 5 wh t, narrow r heeieil eptheif q' ll. l h 1.11? being F efier ie effect with. a e? Qf ha eliea enfia .f r et tau The sim l t S t e he ev rlep edpee e. 4 .fr m. h q fis e e i f. immens is accomplished by, 3, $1 13, quick pull orjerk onjth'e tab 6 and leaves a full width opening for the discharge o he. con en t at'is venin which t'e't si item e n er. mar n-10 l ne vof As previously men lOllQd, it

adhesive .II o none side to the nner margin of a he? la e i e' e ni pred e rats? (at; at the. .e pqs e es WM whi ew l Hermit.

of different-trains;"said tease bang overlapped web s along a band of less width n the surfaces of the paper to be pulled apart, that is to say, the two paper surfaces should be secured together in the areas indicated by means of a tearable seal, a seal which is weaker than the paper itself so that the two layers or sheets will separate without tearing the paperwhen thetab 6 is pulled to open'the package.- This is readily accomplished with the use of a paper web of the heat sealing type for theweb portions 2 and 3. Such a paper web may, for example, be made of bleached kraft paper having a thin coating of polyethylene. A coating of this material one -half a mil. in thickness is satisfactory. It will beunderstood, however, that the paper web may berendered heat sealing by other means such, for example, as by the use of appropriate heat sealing-lacquers. Webs of other heat sealing cellulosic material, such as cellophane, may also be used.

Th ormin O a P k ehin the i fllf i or pull-tab 8 enables the packages to be attractively displayed. One manner of displaying the packages shownin Figs. 9 and 10. As shown in these figures, a standor easel I4, suitable for standing on a counter, has vertically-extending members I5 from which hooked portions It" extend." These hooked portions may be inserted in the pocket formed behind the free margin or pull-g tab 6 to display the packages in the manner hown.

It i fllb ue rste q m ll??? partiqllars f he. eveniiee d eer b ie q m be modified. i ar e a with??? d ar n r m. $91 999? of t e i r ee ieii wei h isie ieeiedie t e pend; & la ms.

I claim:

1. An envelopepackage comprising two sheets having their margins seal ed together along three e 'efq sa d s e t be n folded n t e Of e e 1 i e mid bei edhsive r. secured thereto along aband oi less width than the overlap, said" band being spaced from the edge of the overlapped portion remote from the '-fold to leave a free "central pull flap for opening the package, theencls of said pullflap being ad; hesively secured to said'margins,

2; An envelope package comprising two sheets having their margins sealed together along three edges, one of said sheets being ielded alo g the fourth edge of the package to overlap the outside margin of the other sheet and being ad: hesively secured thereto along a band of less width than the overlap, said banq being spaced m l Bilge i verla pe ri qn femetefrom the foldtdleavea free central pull fiap for Orinifi': e e keee.

A Paper e. .9 2 iee ie aut mati envelopema'chines omp ng two web portions.

pp d eeda i ned; teeet e l ne a bend bf 1885 "Width than eidleYer easa d be ie.

e n s a 22 heele lq ltheiw r to leave an exp se m se verla in t e g a ns o wo web of fi' ent' w th andedhes vel i n nai i he er rl erg -free e rq im ed .....i. ..h 21. e 9.5 2 along said band projecting towards the d epftlie eeselweiiwsh.

5, The method of making envelope packages ready for filling which comprises overlapping the margins of two webs of difierent widths, adhesively joining the overlapped webs along a band of less width than the overlap and spaced from the proximate edge of the wider web to leave an exposed free margin along said band projecting towards the opposite edge of the narrower Web, folding said web lengthwise with said exposed free margin on the outside, adhesively joining said webs crosswise at equally spaced bands, and cutting said folded web into sections midway of said bands.

RALPH W. SCHLIENZ.

References Cited in the file of this patent UNITED STATESPATENTS Number Number 6 Name Date Rambold Dec. 7, 1937 Gluck Dec. 28, 1937 Gurwick Feb. 18, 1941 Salfisberg Oct. 13, 1942 Waters Oct. 13, 1942 Lindh et al Jan. 23, 1945 Stone et al. Nov. 27, 1945 Southwick Feb. 19, 1946 Bojanower Nov. 16, 1948 Magee Oct. 4, 1949 Salfisberg Oct. 11, 1949 Wuko Apr. 11, 1950 Spencer Oct. 31, 1950 Adler Aug. 21, 1951 Rumsey Aug. 26, 1952

Claims (1)

1. AN ENVELOPE PACKAGE COMPRISING TWO SHEETS HAVING THEIR MARGINS SEALED TOGETHER ALONG THREE EDGES, ONE OF SAID SHEETS BEING FOLDED ALONG THE FOUTH EDGE OF THE PACKAGE TO OVERLAP THE OUTSIDE MARGIN OF THE OTHER SHEET AND BEING ADHESIVELY SECURED THERETO ALONG A BAND OF LESS WIDTH THAN THE OVERLAP, SAID BAND BEING SPACE FROM THE EDGE OF THE OVERLAPPED PORTION REMORE FROM THE FOLD TO LEAVE A FREE CENTRAL PULL FLAP FOR OPENING THE PACKAGE, THE ENDS OF SAID PULL FLAP BEING ADHESIVELY SECURED TO SAID MARGINS.

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