US2493671A - Container closure - Google Patents

Description

Jan. 3, 1950 n. H. HoRNlNG 2,493,671

CONTAINER CLOSURE Filed Dsc. 4, 1946 2 Sheets-Sheet 1 TIE- l- BYM Jan. 3, 1950 R. H. HQRNING 2,493,671

CONTAINER CLOSURE Filed Dec. 4, 1946 2 Sheets-Sheet 2 INVENTpR. Raymond H. Harn/)gy B Awys.

Patented Jan. 3, 1950 CONTAINER CLOSURE Raymond H. Hoi-ning, Fulton, N. Y., asslgnor to Oswego Falls Corporation, Fulton, N. Y., a corporation of New York Application December 4, 1946, Serial No. 714,099

(Cl. 22S-5.5)

Claims. l

This invention relates to end closures for containers and more particularly to containers formed of sheet fibrous material, such as paperboard, and the end closure being sealed tothe container by adhesive material.

The invention has as an object an end closure for a container which can be quickly and conveniently applied to the top edge of the container and sealed thereto in liquid tight relation, the end closure embodying a structure by which a portion of the end closure can be conveniently moved from the container to provide a pouring opening for the removal of the contents of the container.

The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawings in which like characters 'designate corresponding parts in all the views.

Figure 1 is a bottom plan view of an end closure for a container, rectangular in cross section, embodying my invention.

Figure 2 is a perspective view illustrating the closure applied to the top of a container.

Figure 3 is a view taken on line 3-3, `Figure 2;

Figure 4 is a bottom plan view of an end closure for a cylindrical container.

Figure 5 is a perspective view illustrating the closure in Figure 4 applied to the top of a container.

Figure 6 is a view taken on line 6 6, Figure 5.

The closure consists of a flat blank Ill of sheet fibrous material, such as paperboard, and of a dimension exceeding that of the container to which it is to be applied whereby, upon application, the marginal portion I I of the blank is folded to form a ange engaging the container. The inner surface of the blank is coated with an adhesive substance operable to seal the blank, or p the marginal flange portion thereof, to the container. Preferably,`the marginal foldable portion is defined by a score line I2 extending parallel, or concentric, with the edge of the blank. Where the end closure `is to be applied to a container, rectangular in cross section, the marginal portion II may be provided with an additional.

score I3, and the corners notched to provide foldable panels which form,l when folded, an inverted channel having inner and outer walls I5, I6, along each side of the closure to .receive the contiguous top edge portion of the container I1 engaging the same internally and externally, see Figures 2 and 3.

2 The corners of the blank are preferably notched, or cut out, so that the adjacent ends of the marginal panels abut when the panels have been folded into the channel formation during the application of the closure to the top of the container and, in the case of the rectangular closure, the score line I2 is spaced inwardly from the notched corners leaving a portion I8 where the inner walls I5 of the channel formation engage the corners of the container.

The coating on the inner surface of the blank is preferably a heat scalable thermoplastic adhesive which is effective to seal the flange, or

'channel formation, to the top of the container upon the application of heat and pressure.

A sheet 20 of uncoated,` or non-sealable, material, such as metal foil, is secured to the inner surface of the blank and overlies a part of the marginal portion of the blank.

When the closure is applied to the container, that part of the marginal portion to which the non-sealing sheet 20 is affixed is thus prevented from sealing to the adjacent or contiguous top edge portion of the body. This portion can accordingly' be subsequently raised from the container to form a pour opening. If the closure is of rectangular formation, as shown in Figures 1 to 3, the sheet 20 is affiired to a corner portion of the blank and overlies at least a portion of the marginal panels adjacent to that corner of the blank, see Figure 1, and the blank may be provided with a score line 2l extending diagonally across the corner portion to which the sheet 20 is affixed and terminating at its ends in the scores I3. This score 42| serves to more specifically dene the movable portion of the closure and renders the opening of the container somewhat more convenient. Y

The closure described is shipped to the dairy, or other packer, and is applied by a suitable head eiective to insert the closure in the open end of the container and fold the marginal portion into engagement with the top of the container, and apply heat and pressure thereto to effectively seal the flange of the closure to the container.

What I claim is:

1. An end closure for a container comprising a flat blank coated on the inner side with a subf stance operable to seal the blank to the container,

the marginal portion of the blank being foldable to form a flange portion engaging the side wall of the container, and a sheet of non-scalable material fixedly secured to the inner surface of the blank and overlying a part of said foldable portion.

2. An end closure for a container formed oi sheet fibrous material comprising a. ilat blank of sheet material having a marginal portion adapted to engage the side wall of the container, the inner surface of the blank being coated with a substance operable to seal said marginal portion to the container, and a sheet of non-scalable mafterial fixedly secured to said inner surface of the blank and overlying part of said marginal portion. f

3. An end closure for a container rectangular in cross section comprising a flat blank coated on the inner vside with a substance operable to seal the blank to a container, the marginal portion of said blank being provided with score lines extending parallel to the edge of the blank and defining foldable portions forming an inverted channel to receive the top edge portion of the container, and a sheet of non-scalable, non-wicking, material secured to the inner surface of the blank and overlying a portion of said channel.

4. An article of manufacture,xan end closure for a container rectangular in cross section, said lying a portion ofthe. channelsadjacent saidA cor-v ner, the exposed sealable. f 5. An end closure for a container rectangular in cross section comprising a flat blank formed of iibrous materiaLsaid blank beingv coated on its inner surface with afsubstance operable upon the application of heat and pressure to seal the closure to the top edge. of the container, said blank being provided with score lines in the marginal portion of the blank extending parallel to the edge of the blank and dening foldable portions forming an inverted channel along each side of the blank to receive ythe top edge of the container, a sheet of metal foil xedly secured in one corner portion of the blank and overlying said foldable ,portions adjacent thecorner, the

exposed surface of said foil being uncoated.

RAYMOND H. HORNING.

REFERENCES CITED The following references are of recordin the me of this patent:

UNITED STATES PATENTS i `Number Name v Date 1,800,143 Hughes Apr. '7,1931 2,302,083 Wilcox Nov. 17, 1942 2,381,508 Moore Aug. '7, 1945 Brooks Apr. 16, 1946 surtaceroi'said sheet being non-

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