US 3109578 A
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Description (OCR text may contain errors)
NOV. 5, J. S. HOSPITAL REFUSE BAG OR THE LIKE Filed. Feb. 12, 1962 FIG. 2.
K so v|4 23 4446 FIG. 3. 28
ATTORNEYS United States Patent 3,109,578 HQSIITAL REFUSE BAG OR THE LH(E John S. Davis, Irvington, N.Y., assignor to Equitable Paper Bag Co. Inc., Long Island City, N.Y., a corporation of New York Filed Feb. 12, 1962, Ser. No. 172,551 3 Claims. (Cl. 229-62) This invention relates to refuse bags and more especially to such bags having adhesive means for attaching them to a hospital bed or cabinet, or other support, at a location where the bag is to be used, and for subsequently sealing the bag after use, preferably with the same adhesive means that are used for attaching the bag to a support.
It is an object of this invention to provide an improved refuse bag of the character indicated and having an adhesive tab constructed so that the bag can be made at lower cost than bags of the prior art designed for a similar purpose. The construction is one that can be made on conventional bag machines with the adhesive tab put on as a patch in a manner similar to the application of patches for shopping bag handles, except that the patch extends over the line of perforation.
Another object of the invention is to provide a refuse bag with a tab having an adhesive coated face that can be folded back to attach the bag to a support, and that can be folded forward over the front panel of the bag to seal the bag closed after use.
Other objects, features and advantages of the invention will appear or be pointed out as the description proceeds.
In the drawing, forming a part hereof, in which like reference characters indicate corresponding parts in all the views:
FIGURE 1 is a diagrammatic view showing the successive steps in the manufacture of the bag of this invention;
FIGURE 2 is a fragmentary front view showing the top and bottom of a bag made in accordance with this invention.
FIGURE 3 is a sectional View through the bag shown in FIGURE 2, the section being taken on the line 33 of FIGURE 2;
FIGURE 4 is a sectional view through the bag shown in FIGURE 2, the section being taken along the line 44 but with the supporting tab in a folded-back position;
FIGURE 5 is a view similar to FIGURE 4, but showing the bag sealed closed.
The bag of this invention is made from a continuous web 19 which passes thorugh a conventional bag making machine having dilferent operating stations. Since the apparatus for making the bag form no part of this invention, FIGURE 1 illustrates the steps of manufacture without showing the apparatus for performing the steps. Such apparatus is well known to those skilled in the art, and theoretically the steps can be performed by hand. It is one of the outstanding advantages of the invention, however, that the bag can be made on a conventional machine such as is used for making shopping bags.
At the first operating station, the web is perforated along incised lines 12 and 14. These lines are formed by cutting through the full thickness of the web along short lines separated from one another by short uncut portions of the web. The line .12 extends to both edges of the web but it has an interruption in it for a substantial distance indicated by the dimensional brace 16. The line 14 extends across all, or most of the width of the web that is not cut by the incised line 12.
At the second operating station, an area of the web is covered with paste or other adhesive 18.
At a third operating station, a patch 19 is applied to the web 10 over the area of paste 18 and with a substantial part of the patch extending beyond the line 12. This patch 19 is applied to the web 10 in the same way that a handle holding patch is applied to a web when making shopping bags; but for this invention only one patch is applied for each bag length, whereas a web for making shopping bags has two transversely spaced patches applied because the bag must have handles on its opposite sides.
At a fourth operating station, two continuous cuts 20 and 21 are made through the web 10. These cuts 20 and 21 may be parallel to the edges of the web 10, but they are preferably at a slight angle to the edges. The cuts 20 and 21 extend from the ends of the line 14 to the ends of the line 12 at both sides of the interruption in the line 12 as indicated by the dimension brace 16. Two substantially parallel cuts 23 are made through the web 19 close to the sides of the patch 19. These cuts 23 are in addition to the conventional cuts made for ordinary bag manufacture.
The web 10 is then folded and formed into a flat tube 10' with the opposite edges of the Web overlapping and secured to one another by adhesive along a longitudinal seam 28. In the preferred construction, pleats 30 (FIG- URE 3) are formed in the hat tube at the time the web is folded. This increases the capacity of bags made in accordance with this invention.
The bag blanks are then separated from one another by snapping the end bag blank from the folded tube 10', the tears taking place along the incised lines 12 and i 14. Because of the longitudinal spacing of these lines 12 and 14, the bag blanks tear from the web with the back of the bag extending beyond the front at one end of the bag and with the front extending beyond the back at the other end.
At the last operating station the extending portion of the front of the bag, constituting a flap 34 (FIGURES 2, 4 and 5) at the bottom of the bag, is folded across the bottom and up over the outside surface of a back panel 36 of the bag and is secured thereto by adhesive to complete the bottom of the bag. The invention can be made with other conventional bottom constructions.
The front panel of the bag is indicated by the reference character 38; and the portion of the back panel 36 that extends above the front panel 38 forms a flap 40. The cuts 23 extend from the top of the flap 40' to the level of the top edge of the front panel 36 and the part of the flap 40 between these cuts 23 constitutes a tab 44.
The patch 19 is on the front of the tab 44 when the tab 44 is in the plane of the remainder of the flap 40. There is adhesive 48 on the back of the patch 24 securing the patch to the tab 44'. The front of the patch 24 is coated with adhesive 59 and in the preferred construction the adhesive 50 is a pressure sealing adhesive. Ordinarily the adhesive 48 is a conventional paste such as is commonly used for making paper bags.
The pressure sealing adhesive 50 is originally covered by a protecting layer 52. When the bag of this invention is to be used, the tab 44 is folded back along a line 54 (FIGURE 4) and this fold constitutes a hinge connecting the tab 44- to the back panel 36 below it. The layer 52 is then peeled off the adhesive 50 and the exposed adhesive is pressed into contact with a fixed surface 55 of a hospital bed, cabinet, or support on which the bag is to be located for receiving refuse. The layer 52 has an edge 56 (FIGURE 2) extending beyond the patch for gripping the layer to start peeling it off; or the patch is uncoated on a narrow portion on each side and the layer 52 or cover sheet extends to the patch edge.
When the bag is filled, or it has been holding refuse for a reasonable length of time, depending upon the nature and probable spoilage time of the contents, the tab 44 is stripped from its support and is swung about the hinge line through an angle of approximately 360. This brings the tab 44 across the top edge of the front panel 36 and down across the outside face of the front panel with the pressure sealing adhesive facing the front panel. The tab 44 is pressed firmly into contact with the front panel and the bag is thus sealed closed.
Although the tab 44 extends only part Way across the top of the bag, it is located at the center and the holding of the center of the bag mouth closed is suificient to prevent refuse from coming out of the bag. 7
In the preferred construction the bag is made of kraft paper which has been treated to make it fire resistant. If the intended service requires it, the bag can be made of waterproof paper, or other material.
The preferred embodiment of the invention has been illustrated and described, but changes and modifications can be made and some features can be used in different combinations Without departing from the invention as defined in the claims.
What is claimed is:
1. A refuse bag having front and back panels and an inwardly-extending pleat on each side of the bag joining the front and back panels and of one-piece construction therewith,
a tab connected to the back panel for suspending the bag from avertically-extending support and for subsequently holding the upper end of the bag closed when the bag and its contents are to be discarded,
the tab being connected to the back panel along a horizontal hinge line spaced downwardly from the top edge of the back panel,
the tab having its side edges separated from the back panel by cuts extending downward from the top edge of the back panel and spaced inward from the sides of the bag by a distance greater than the inward extent of the pleats when the bag is in folded condition,
the tab having its front face coated with pressuresealing adhesive,
said tab extending for a substantial distance beyond the top edge of the front panel so that the tab can be bent downwardly across an area of the front surface of the front panel to hold the bag closed,
and a removable protecting strip over the pressuresealing adhesive.
2. The refuse bag described in claim 1 characterized by the tab being of composite construction and including a lower portion formed of the material of the back panel,
and the tab having also an upper portion that overlaps the front of the lower portion and that is permanently secured thereto by adhesive,
and the upper portion of the tube extends for a substantial distance beyond the upper end of the lower portion.
3. The refuse bag described in claim 1, and in which the bag has the front panel connected directly to the back panel at a fold at the bottom of the bag to form an envelope bottom.
References Cited in the file of this patent UNITED STATES PATENTS 2,215,989 Wolf Sept. 24, 1940 2,715,493 Vogt Aug. 16, 1955 2,774,531 'Rosenthal Dec. 18, 1956 2,861,735 Faltin Nov. 25, 1958 2,971,688 Akers Feb. .14, 1961