Патент USA US2124231код для вставки
July 19, ‘1938. ~_ ‘H. G. K|TTRED¢E ET AL ' 2,124,231 CIGARETTE CASE Filed Feb. 23, 1935 ‘F164. ' FIG. 3. ‘F162. FI6.5. immm \ HARVEY c. K ITTREDGE, FRANK w. WILLIAMS, , 2,124,231 Patented July 19,1938 I UNITED ‘STATES PATENT orricr. 2,124,231- I CIGARETTE CASE .Harvey G'.’ Kittredge and Frank W. Williams, Dayton, Ohio, asslgnors to Foiliilm, Inc., Day ton, Ohio, a corporation of Ohio Application February 23, 1935, Serial No. 7,792 4 Claims. ‘(01. 229-87) .025 inch. The fol] may be made of any of the ‘ Our invention relates to a new article of manu standard metals for this purpose.‘ The structurally ‘strong supporting backing‘ for facture for use as a cigarette. package. It is the object of our invention to provide a cigarette package that is impervious 'to moisture 5 and can be folded and sealed. It is a further object to provide a cigarette ‘package which has a transparent window so that the condition of the package can be observed. _ It is our object to provide a structurally weak, 1o metallic foil reinforced with a transparent metal adhering material that becomes plastic and ad hesive under the application of slight‘pressure and heat. Such a material in a cigarette pack age makes it possible to eliminate multiple opera 15 tions in the formation of a package and makes it possible to eliminate the paper wrapping on the inside of tin foil, which is characteristic of the present day cigarette package. It is our object to provide a single ‘sheet of 20 material of reinforced tin foil and a further ob ‘ ject of‘providing such a. sheet in which certain areas have no tin foil so as to provide transparent windows through the backing material for the tin foil that is thus left uncovered. . Referring to the drawing, Figure 1 is a vertical . section through a, package having one end open ‘ and one end sealed, showing the composite struc tural arrangement of the walls and thepackage. 30 ‘This section is taken on the line l-l of Figure 2. Figure 2 is an end elevation of the package from the sealed end. ‘ Figure 3 isa section on the line 3-3 of Fig ure 4. It shows the modi?cation with a trans parent window on the side walls of the package. Figure 4 is an end elevation of the sealed end of the package of Figure 3.‘ . - _ Figure 5 is 'a side elevation of the package of Figure 3. ' ' Referring to the drawing in detail, the pack “) age is formed of a structurally weak tin foil des ignated l to which is integrally joined a metal adhering, syntheticresln material 2. This ma terial is tough, metal-adherent, substantially transparent and has a smooth surface that is 45 non-adherent to any object under ordinary con ditions of temperature and pressure. ‘ Upon heat being applied to the tin foil or its structurally strong backing, this backing be comes adhesive, and ‘upon the ends of the pack ' 50 age being folded as indicated, this material will adhere to the adjacent metal surface and to it» self, forming a ‘tight hermetical seal that keeps the metal, may be made of a. variety of synthetic resinous materials provided they have the char‘- 5 acteristics in‘ the compound of metal-adherence, transparency, a hard, smooth, tough body at or-' dinary temperatures, and the capacity for be coming adhesive upon the application of slight heat and slight pressure. _ 10 A- typical compound which. we have found satisfactory is the following: ‘ ' ‘ . We have found that among the materials that provide for a tough body ?lm are cellulose ace tate, cellulose'nitrate, vinyl acetate, vinyl acetate 15 polymerized, vinyl acetate modified with acetal dehyde, and various other equivalent resins'that are normally ?exible and hard and tough, but not adherent to metal. We have found that substances that are adher- 2° ent to metal, but which are not ?exible, hard and tough are such materials as a saturated-alkyd resin. coumeron-indene resin, a phenolic resin shellac, dewaxed shellac, and gum dammar. , ' We have. found that materials which are sult- 25 able plasticizers are chlorinated diphenyl, tri phenyl phosphate, tricresyl phosphate and di butyl phthalate. Such plasticizers are ?exible and control the drying rate.‘ we find such solvents as toluol and naphtha 30 to‘be suitable for purposes of this invention. We ?nd that the addition of linoleate of lead controls the drying rate, the addition of - waxes and stearates controls the tendency of the compound in ?lms to stick to one another, par- 35 ticularly where it is necessary to roll the ,com posite foil film, after having been produced'in‘ the interim, before it is utilized vin commerce. . Our invention consists of the combination of a tough body means and adherent means, and a ?exible ‘means, such as a polymerizer, together with a suitable solvent. The result is a non-hy groscopic metal and glass adherent ?lm that can be used for they production of strong metal 45 foil products, labels, cigarette packages and other forms of containers. _ 2.4 grams-of- vinyl acetate, 6 grams of phenolic ‘ resin, 2.5 grams of chlorinated diphenyl and 18 cc. of toluol, when appliedat 105 degrees C. for 50 three minutes to metal foil, provide a strong, tough product having a water-white brilliancy and sparkle. The product is strongly adherent the moisture and ?avor in the tobacco of the \ to metal and cannot be detached therefrom at cigarettes. The metal foil runs in thickness from .0001 to room temperatures, and the metal can be at- :55v 2 . 2,124,281 tached to glass by the application of heat and’ what we claim as new and desire to secure by v slight pressure. ' . There are a variety of other combinations than indicated but we have found the foregoing to be a satisfactory one-in practice. The package is provided with a sealed end as indicated in. the several ?gures of the drawing and it will be noted that this backing for the tin foil, when the folding has taken place at the end 10 of the package, will form a tight seal due to its metal adherent qualities when slightly heated. This is indicated at the sealing surfaces marked 3 and 4. , Referring to Figures 3, 4 and 5, this backing 15 film is left without any foil facing as at 5. As the backing film is substantially transparent and is tough, strong and durable and has a smooth surface, this provides a window through which the cigarettes can be viewed, while at either end 20 there is the metal foil ca-p Suitably sealed. The ends are (sealed 'with the combined metal and backing reinforcement while the intermediate side walls are transparent. This backing mate‘ rial is light and ?exible so that the total weight 25 of the package is materially reduced from that of the customary package now known in the art. One of the outstanding features of this pack age is that the synthetic resin compound is non hygroscopic. There is, nothing to absorb mois ture as in the case of cellulose or natural resin. It is disastrous to a cigarette packagevto associate Letters Patent, is: I . 1. 'A new article of manufacture for use as a moistureproof package consisting of a non hygroscopic transparent, ?exible ?lm adherent to metal under ‘the application of heat, having un covered areas and areas covered by metal foil integrated therewith whereby a package can be formed having transparent portions and metal foil covered portions. H ' 10 2. A new article of manufacture comprising a relatively‘ strong non-hygroscopic transparent. film that becomes adhesive under heat and that is metal adherent, and end coatings of metallic foil integrated therewith whereby a window is 16 left between the metallic foil ends for the ob servation of the contents of the package andv whereby upon folding, the ends of the ?lm may be thermoplastically united with itself and ad jacent areas of foil to form a moistureproof end seal for the package. . ‘ .3. A moistureproof package comprising an in; ner transparent wrapper of thermoplastic non hygroscoplc metal adherent synthetic resin hav ing integrally secured to the outside thereof structurally weak metal foil extending to the ends of' the inner wrapper, the ends of said pack age being folded and sealed by thermoplastically uniting areas of said inner wrapper with ad jacent areas of said metal foil. > 4. A moistureproof package comprising an in with it moisture-absorbing materials. That is _ ner transparent wrapper of thermoplastic non the reason for the use of tin foil and that is the hygroscopic metal adherent synthetic resin hav disadvantage of, the paper backing of tin foil. 35 The further disadvantage is that with the present ing integrally secured to the outside thereof areas of structurally weak metal foil'separated to pro day package there is no means of sealing the vide a window and extending substantially to the package against the entrance of moisture or end of the inner wrapper, the ends of said pack against the loss of moisture from the tobacco. Y age being folded and sealed by thermoplastically It will be understood that we desire to com uniting areas of said inner wrapper with adja 40 prehend within our invention such modi?cations cent areas of said metal foil.__ as may be necessary to adapt it to varying con ditions and uses. HARVEY G. KIT'I'REDGE. ‘ Having thus fully described,‘ our invention, W. WILLIAMS.