US2367520A - Moistureproof container - Google Patents

Description

Jan. 16, 1945.

J. M. PATEK Filed Odt. 10, 1942 2 Sheets-Sheet l 3 FlE./.

I g l I i I l I i i i 23 40 i i m 1 l 4l- E E l I /4 I l 1 i Z i t l J OUTER PAPER TURNED 01 51? AND 62 UED T0 LIN/N6 56 -51 45 32 /42 K a g 49 23 DOUBLE LAYER 0F RESIN- COATED GLASS/NE PAPER WI TH WAX BETWEEN Z LAMINATED PAPER 3 J N; AND GLASS/NE :5 5M: LIN/N6 30 32 kW? 42 31 JOHN M. PATEK 2:: 2:: :1: t INVENTOR mm W / AT RNEYS Jan. 16, 1945. J.-M. PATEK MOISTURE PROOF CONTAINER Filed Oct. 10, 1942 2 Sheets-Sheet 2.

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'i EIPRO F CONTAINER John M. Patch, Rochester, N. Y., assignor to Eastman Kodak Company, Rochester, N. EL, a corporation of New Jersey Application October 10, 1942, Serial No. 461,521

Claims. (Cl. 229-31) a photographic film against gain or loss of mois-' ture during storage and/or shipment.

Another object of the invention is the provision of a container made up of sections each of which is adequately water or moisture protected or proofed.

A further object of the invention is the provision of a moisture protective coating for a container of the class described, which not only efiectively protects the film against loss or gain of moisture, but which also protects the container against warpage and provides further strengthening means.

Still another object of the invention is the provision of moisture proofing means which are very efiective even under extreme conditions such as found in the tropics.

To these and other ends, the invention resides in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification;

In the drawings:

Fig. 1 is a plan view of a container constructed in accordance with one embodiment of the invention, with parts cut away to more clearly show the relation of the various container elements;

Fig. 2 is a sectional view through the container illustrated in Fig. 1, showing the relation of the container elements and the water or moisture proofing elements or layers. 1 I

Fig. 3 is a view of a portion of one of the box member illustrated in Figs. 1 and 2, but on a larger scale than the latter, to show more clearly the specific structure of the container and the protective layers, illustrated in Figs. 1 and 2;

Fig. 4 is a perspective view of a modified container construction, with parts broken away to show the relation of the various container members;

Fig. 5 is a sectional view 01' a portion of the container members illustratedin Fig. 4, but on a larger scale than the latter, and taken substantially on line 5-5 thereof and showing the parts constituting the complete container.

Fig. 6 is an outer view of still another form of container constructed in accordance with the present invention; and

Fig. 7 is a transverse sectional view through a portion of the container illustrated in Fig. 6, but on a larger scale than the latter, showing the various container elements.

Similar reference numerals throughout the various views indicate the same parts.

The drawings show various container constructions each of which provides a water and mois-.

tureproof protection for a roll of photographic film positioned in the container. While these containers are specifically designed for use with photographic film, the present invention is not to be limited thereto as it is obvious that such containers may be used for a wide variety of purposes where moisture or waterproof protection is desirable or necessary.

Figs. 4 and 5 show a container construction in accordance with one embodiment of the invention to provide an upper member or section I! and. a lower member or section l l arranged to telescope with the member or section l2; to form the complete container, as illustrated in Fig. 4, and readily apparent to those in the art. As the members H and I2 are identical in structure, except for slight differences in size to permit telescoping, only one of these memberswill be discussed in detail, and the corresponding parts of the other member will be designated by the same numerals. Each member ll and I2 is formed from a sheet of cardboard, pasteboard, or other suitable material to provide a' hollow member having a bottom l3 and side and end walls I4 and I5 respectively. The members 'II and I2 are shown, in the present embodiment, as rectangular, but this is for the purpose of illustration only, as it is contemplated that the members may assume various shapes. I I

The entire outer surface 16 on each member ll and I2 is covered with a layer of moistureproof material, generally indicated by the numeral l1 and comprising a single sheet or layer which when suitably folded, as shown in Fig, 4, will lie against the bottom l3 and the side and end walls I4 and I5, as clearly illustrated in Fig. 4, and believed to be readily apparent to those in the art. The material I! is preferably of a laminated structure and comprises, in the present embodimentytwo sheets of glassine l8 between which a layer I 9 of waxis sandwiched, as' best shown in Fig. 5. The outer or exposed surfaces of the glassine sheets I 8 are preferably coated with a moisture resisting resin. I

This laminated moistureproof layer I1 is not secured to the outer surface of the member II, but is preferably loosely positioned or held thereagainst by an outer waterproof covering, generally indicated by the numeral 23, and comprising a single sheet or strip which extends over the bottom I3 and the walls I4 and I5 and in overlying rleation with the layer I! to hold or retain the latter against the walls l4 and H: of the member H, as shown in Figs. 4 and 5. This outer waterproof coating 23 is also preferably laminated and comprises two layers of kraft paper 24 between which a layer 25 of asphaltum is sandwiched, as clearly shown in Fig. 5. This waterproof covering 23 is provided with marginal portions or flaps 26 which extend over the exposed edges 21 of the walls I4 and to effectively retain the moistureproof layer I! in position against the outer surface of the member II, as will be readily apparent from an inspection of Fig. 5. The inner edges of the flaps 26 are bent downwardly to overlie the inner surface of an inner moistureproof lining or layer, generally indicated by the numeral 30. This inner layer comprises, in the preferred embodiment, a sheet of glassine 3| and a layer of black kraft paper 32 between which a layer of wax 33 is sandwiched, as best shown in Fig. 5. This glassine sheet 3| is adhesively or otherwise secured to the inner surface 34 of the member The bent down flaps 26 maybe adhesively or otherwise secured, as with glue, to the exposed surface 35 of the black kraft paper 32, as clearly shown in Fig. 5. As this inner moistureproof layer 30 is adhesively secured to the inner surface 34 of the member l2, this layer may be broadly considered as a part of member II, and

the covering 23 may be, therefore, broadly considered and secured directly to the member 1 The construction illustrated in Figs. 4 and 5 thus provides inner and outer moistureproof layers 30 and I1 respectively, and an outer waterproof coating 23 for each' of the box members II and I2, the covering 23 being secured directly to the box member or to the layer 30, and retaining the layer against the outer surface of the box member.

The container construction illustrated in Figs. 1 and 2 resembles, in most respects, the container illustrated in Figs. 4 and 5 and differs from the latter principally in that each of the main telescopic box members or sections 40 and 4|, corresponding to the members or sections II and I2 of Figs. 4 and 5, are of a double wall construction. As each of the members 46 and 4| are of the same construction, only one of these members will be described in detail and corresponding parts of the other member will be designated by the same numerals. The lower member or section 4| comprises an inner box member 42 which, like the member I l, is formed from a sheet of cardboard or other suitable material to provide a hollow member. This inner box member 42 is arranged to nest or telescope inside an outer slightly larger box member 45, also formed of cardboard, as shown in Figs. 1 and 2. By means of this arrangement, each member 4|! and 4| is formed of a pair of nesting or telescoping members 42. and 45, which cooperate to provide a double wall construction. Theinner moistureproof layer 30 is adhesivelysecured to the inner surface 48 of the inner box member 42, in the same manner as the layer 30 is secured to the member above described. The outer moistureproof layer H, on the other hand, is, in the embodiment shown in Figs. 1 to 3, loosely positioned between the box members 42 and 45 and covers the entire outer surface of the inner box member 42 and the entire inner surface of the outer box member 45 to provide a loose moistureproof layer between the two box members, as best illustrated in Fig. 3. The waterproof coating 23 then overlies the entire outer surface of the outer box member 45 and has a marginal flap 26 folded over the exposed edges 50 and 5| of the box members 42 and 45, see Fig. 2, to retain the layer I! in position between the box members. The bent down portions of the flaps 26 are then secured to the exposed surface 35 of the black kraft paper 32 to secure the covering 23 to the box members, and to provide the sole means to retain the box members 42 and 45 in assembled relation, as will be apparent from an inspection of Fig. 2.

While the container illustrated in Figs. 1 to 3 is shown as rectangular in shape, this is by way of illustration only as it is contemplated that the box members may be of different configuration to suit the material to be positioned within the container. For example, Figs. 6 and 7 show a container, the structural details of which are substantially identical to those shown in Figs. 1 to 3, but the double wall members are tubular in shape rather than rectangular. The container shown in Figs. 6 and 7 is provided with a tubular inner member 55 and a tubular outer member 56 which is arranged in telescoping relation with and concentric to the member 55. The inner moistureproof layer 30 covers and is adhesively secured to the inner surface 51.0fthe member 55, as shown in Fig. '7, while the outer moistureproof layer I1 is loosely positioned between the two container members 55 and 56, much in the manner shown in Fig. 2, to provide a moistureproof layer between the two tubular container members. The outer moistureproof covering 23 then overlies and is adhesively secured to the entire outer surface 58 of the outer container member 56. The ends of the container may be'closed by a suitable moistureproof cap 59 which may be secured to the container in a variety of ways well known in the box-making art. If desired, the inner member 55 may be extended somewhat beyond the end of the outer member 56 to provide a neck portion 60, see Fig. 6, adapted to receive the closure cap 59 which will then abut a shoulder 6| formed on the outer member 55. To insure further moistureproofing, the joint between the cap 60 and the outer member 56 at the shoulder 6| may be taped with a suitable moistureproof tape.

The above-described construction thus provides a container which will effectively protect the film positioned therein against gain or loss of moisture. The inner layer30 shields the film against the moisture present in the material of the box members, or the too rapid intake or absorption by the film of such moisture. Furthermore, the outer coating 30 not only strengthens the container, but also protects the latter against warping due to moisture, and the asphaltum layer thereof keeps the container from molding in the tropics. Such a container is adapted for use not only for storing and shipping unexposed film, but is also well adapted for use in storing and shipping of the unexposed and developed or processed film to effectively protect the latter against gain or loss of moisture. The container constructed in accordance with the present invention thus provides an outer wall waterproof coating and a.

moistureproof layer or layers positioned between the outer coating .and the interior of the container. If desired, the moistureproof layer ll may be replaced by a layer of wax or similar waterproof material applied to or formed on the:

outer surface of the box II, or the outer surface of the box member 42 or 55, as will be readily apparent. However, such a wax layer has been found to be less effective than the laminated layer I1, above described.

While certain embodiments of the invention have been disclosed, it is to be understood that the inventive idea may be carried out in a numher of ways. This application is, therefore, not

to be limited to the precise details described, but

combination, a pair of container sections adapted to be arranged in telescoping relation to form said container, at least one of said sections having inner and outer nesting members, an outer water proof coating covering the outer surface of said outer member, and an independent resin coated laminated layer of moisture proof material positioned between and retained in place solely by said members but not secured to either.

3. A moisture proof container comprising, in combination, a pair of container sections adapted to be arranged in telescoping relation to form said container, at least one of said sections having inner and outer nesting members, an outer laminated water proof coating covering the entire outer surface of said outer member, and a laminated sheet ,of moisture p'roof material loose- 1y positioned between said members and covering substantially the entire outer surface of said inner member.

4. A moisture proof container comprising,\in

combination, an upper and a lower box section each having exposed edges, an outer-water proof coating covering the outer surface of each. of said sections, a sheet of laminated moisture proof material positioned intermediate said coating and the inner surfaces of each of said sections, por

tions of each of said coatings extending over the edges of the sections which it covers, and projecting downwardly from the edges to overlie part bf the inner surfaces thereof of said last section to retain said sheet in position, and means for securing said portions of each covering to the inner surfaces of the section which it-covers.

5. A moisture proof container comprising, in

combination an upper anda lower box section each having exposed edges, a separate outer laminated water proof coating covering the entire outer surface of each of said sections, a sheet of laminated moisture proof material positioned intermediate each coating and the inner surfaces of each of saidsections, and portions of each coating extending over the edges and projecting downwardly along the inner surfaces of the section which it covers and attached-to aid inner surfaces thereof to secure said covering to said the section covered thereby and to retain the sheet in position thereon.

mm: M. PA'IEK.

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