Патент USA US2128893код для вставки
Sept. 6, 1933- s. BERGSTEIN HERMETICALLY SEALED CARTON Filed July 27, 1954 JZe 5 II», ‘ 2,128,893 Patented ‘Sept, e, 1938 ' UNITED STATES ‘ PATENT? ‘OFFICE » ‘2.128.893 ' .HERMETICALLY SEALED CARTON Samuel Bergstein, Cincinnati, Ohio, assignor to Edna May Bergsteinand Robert Morris Berg stein, as trustees Application July 27, 1934, Serial‘ No. 137,286 3 Claims.» (CL 229-—1'l) I My invention relates to cartons made of paper stock, and more‘ especially to such cartons which are adapted to contain liquids, as well as such cartons adapted to contain dry materials, and in 5 any case to be air and liquid tight. In'my Pat- i ents 1,974,256, Sept. 18, 1934, 1,976,980,0ct. 16, 1934 and 2,074,357, Mar. 23, 1937; I disclose .and claim cartons adapted for these purposes; the improvement in the ?rst-mentioned application being in the making of such cartons so that the crevices at the corners and corner edges of their ends where the flaps are ‘folded together, ’ are effectively hermetically sealed and reinforced a powdered form, and also to exclude air and moisture, or retain theproperties of the packed material, such as moisture or grease content, or aroma of the materials. A further object of my invention is to produce a carton answering to the above requirements, - and in general constructed as disclosed and claimed in my above mentioned Patent 2,074,357 01’ Mar. 23, 1937, in which the ?lling and empty ing opening not only is located close to one corner of the end of the carton, but in which the 10 closing flap which seals this opening is made with parts which are readily separated, one part being so as to sustain the sealed condition; and in local to said opening and being readily detach 15 my last-mentioned copending application I dis- . able to \swing open without disturbing the other 1 close and claim cartons which not only are sealed parts of the ?ap. The object of this just-men at their end edges and corners as just above tioned improvement is not only to facilitate open- _ noted, but I have all of the flaps at one end ing, but to increase the facility of secure sealing and strong reinforcement at the edges and corners of the end having the opening, includ- 20 at the other end are likewise closed and sealed, ing the reinforcement of this sectional ?ap in its and have a ?lling and emptying opening which ’ closed and sealed relation to the other end parts is closed by a main ?ap that is effectively sealed of the container. Other objects will appear in the course of the thereover. ' following description, illustrated by the accom- 25 My present invention embodies all of the prin panying drawing, in which ciples disclosed and claimed in my above co closed and effectively sealed in theljust men 20 tioned manner, while all ‘of the flaps except one pending applications, and is an improvement thereon in respect of certain details ‘of construc tion of the carton. ' Fig. 1 is a plan view of the blank for my ca - ton having the ?nal closing ?ap adapted to have a section only opened. , Fig. 2 is a perspective view of the top part of 30 30 ' It is necessary therefore that the container be I of such substantial and closed construction at my carton, with the section of the ?ap opened. In Figs. 1, and 2 is shown a modi?cation of the ?ap edges and corners where the flaps fold across each other as to allow no passage of the. the usual closure flap of the‘ carton. It will thin coating while it is being applied, and no be understood that the carton with this modi? 35 breakage of it after it has fully set, under weight cation may be made according to the methods, 35 and with any of the proo?ng mediums, inside or impacts. It must be such as to perfectly sup port the coating so that it cannot be cracked or and outside, or either, that have previously been described. The difference between this example loosened, or otherwise impaired. of Figs. 1 and 2 and other types. of cartons, is The methods disclosed in my above noted pat that the flap Hie, which is the ?nal closing ?ap, 40 40 cuts provide the means for insuring this reliable ' is provided with a subsidiary ?ap local to the support of the coating; but in those applications the particular character of the covering of the carton surface was not dwelt upon. My inven tion is also appropriate for cartons that must be 45 tightly ‘wrapped, such cartons usually containing dry substances; and the provisions forsustain ing the wrapper are present in said copending ap plications. It will, of course, be. understood that - my present inventionis not limited to making ‘ 50- cartons for liquids, although especially adapted for that; but that the especially strong construc tion of cartons and the especially effective sealing thereof makes them equally effective for packing dry materials, so as to prevent sitting of such 55 materials from the carton~ if the materials be of filling and emptying opening 2”. The ?ap [6e has a slit Bl from ‘its free edge back toward its hinge, terminating some distance short of the hinge; and from the end of this slit or cut 6|, 45 at right-angles thereto, a line of‘perforations 62 1‘ extend to the lateral edge of the ?ap, past the opening 2|}. These perforations 62 are not so pronounced as to weaken the ?ap so much that, it will not act as a unit in the operations of 50' folding it, applying adhesive to it, and closing it, in‘the methods previously described. How- ‘ ever, when the flap I Be hasbeen closed and sealed, the portion 63 or subsidiary flap, which lies symmetrically to the opening 2|,f that it 55 2,128,893 / closes,v may be pulled up and be detached fromv and so formed as to leave a ?lling and emptying the carton top surface surrounding the opening opening in said end, and having a ?ap hinged 2H‘, and will break and hinge along the line of perforations 82 as seen in Fig. 22. To facilitate grasping it for this operation, this ?ap 63 pref erably has a small tab 64‘ on its laterally outer edge. This tab 64 is formed by cutting it out of the ?ap “e as seen best in Fig. 1, leaving a recess 65 in the edge of the flap Hie which is of 10 no consequence since this is one’ of the two ?aps ?rst folded in when‘ forming the closed top of the ‘carton, and this recess is covered by ?ap We as well as by the portion i6f of ?ap lGe that remains attached when subsidiary ?ap 83 is 15 opened. An important advantage of this con struction-is that the portion 16f remaining in tact, preserves the-reinforcement‘ along the edge oi’ the carton top, and the crevice closures at the corners 38', due to the use of the beads of adhesive or sealing medium as before described for the previous examples. It also makes a neater package when opened. -It will be under— stood that this example is applicable to cartons for any of the uses, for oil, or for'milk, or other .25 liquids, or for dry materials, previously men tioned. ' It will be understood that latex may be used as the ~interior coating of a liquid-holding car; ton, instead of lacquer; as latex will e?ectively resist liquid penetration, including oils. Even 3.0a mineral oils will not be so active on it as to make it unsuited for containers for such oils. Waxes sealing material along adjacent to the hinging of said ?ap to said end, which excessive amount of sealing material fills the crevices at the cor ners where the ?ap bends across the other ?aps, said hinged ?ap having a subsidiary ?ap attached 10 to it along a line spaced in from the hinge of the ?ap, and local to said opening, whereby this subsidiary ?ap may be detached from the sur face around the opening and. swung open to un cover the opening, without disturbing the re mainder of the ?ap or the excess adhesive along the hinge and at the corners. 2. A paper carton having end ?aps interlap ping and formed to leave an emptying opening and having a main flap to seal across the afore 20 mentioned ?aps and close said opening, the part oi’ said ?ap covering said opening formed as an independent flap of rectangular shape having a weakened line of attachment to said main ?ap whereby said independent flap may be sepa 25 rately detached to uncover said opening. 3. A paper carton having end ?aps interlap ping and formed to leave an emptying opening and having a main ?ap to seal across the afore mentioned ?aps and close said opening, the part so of said ?ap covering said opening formed-as an _ independent flap of rectangular shape having of synthetic resin are obtainable, which are very a weakened line of attachment to said main water and moisture proof. It will be under stood that modi?cations other than those illus trated and described may occur in practice, and that I am not limited to the rather precise dis ?ap whereby said independent ?ap may be sepa rately detached to uncover said opening, the 35 independent ?ap being so joined to said main ?ap that the main ?ap as a whole including the independent ?ap may _be folded over and sealed as a unit during the initial closure and sealing of said main?ap. ' 40 closure herein, but what I claim as new and desire to secure by Letters Patent is: 40 to said end and sealed to said end across said opening by a practically thin film of adhesive sealing material and by an excessive amount of CR 1. A paper. stock carton having at least one end made up of interlapped ?aps se'aled together - ' SAMUEL BERGS'I'EIN.