Патент USA US2109583код для вставки
March 1, 1938. A. BENNETT 2,109,583 GUMMED TAPE Filed Feb. 8, 1936 INVEN TOR. ARTHUR BENNETT BY _ W .4, ' I ' ' ‘ .<' ~ ATTORNEY. Patented Mar. 1, 1938 ' 2,109,583 UNITED STATES PATENT’. OFFICE - 2,109,583 GUMMED TAPE Arthur Bennett, San Francisco, Calif. Application February 8, 1936, Serial No. 62,977 1 Claim. (Cl. 154-43) The invention relates to adhesive or gummed tape in general, and particularly to the so-called pressure sensitive adhesive tape, or ever-tacky gummed tape, which merely requires pressing ?rmly against a surface to make it adhere there to, and still more particularly to the type of ever-tacky gummed tape as shown in my copend ing patent application ?led on March 26, 1935, under Serial No. 13,037. 10 The principal object of the present invention is to provide a combinationof two gummed tapes to facilitate transfer of an ever-tacky layer of gum from a carrier strip to an object having a frail or soft surface to which it is desired to 15 apply the ever-tacky layer. Other objects and advantages of the invention will appear in the . The present invention overcomes the difficulty above outlined, by providing a compound tape provided with a relatively wide strip gummed on 5 one side as with a dried mucilage or glue coating from edge to edge, and which strip is moistened on its gummed surface and stuck to the object desired, and a relatively narrow strip of ever tacky gum is left on the outer surface or back 10 of the wide gummed tape by peeling away from it an‘ outer covering tape, thus leaving perma nently attached to the object a wide gummed tape stuck to the object by common gum on its under side and the back of which wide tape 15 carries a narrower band of ever-tacky gum. In Fig. 1a ?exiblestrip or tape I is shown In the drawing Fig. 1 shows in perspective a strip of paper tape gummed on one side over its covered on one side with an adhesive or gum Fig. 2 is a similar view to that of Fig. 1 but showing a strip of paper, cloth or other tape, layer 2. The tape I may be tough paper or of any other strong flexible material such as Cello- 2 phane, and the gum layer is a dry layer of any adhesive such as used in gumming postage gummed on one side with a narrower strip of stamps, envelopes, etc., which must be moistened ever-tacky gum. - Fig. 3 is a similar perspective view to the pre ceding ?gures but shows the tape of Fig. 1 pressed tightly on top of the ever-tacky gum layer of the tape of Fig. 2 to form a compound or combina tion gummed tape constituting the invention. 30 or strip the cover tape. following description and accompanying drawing. 20 entire area. 25 split or come apart when attempting to pull off Fig. 4 is a side elevation showing the compound gummed tape of Fig. 3 turned upside down and with its wide gummed face stuck to an object and the cloth or other backing of the ever-tacky gum layer being stripped off. Before describing the present invention in de to make it sticky so that it may be stuck to any desired object. ' 25 In Fig. 2.is shown a ?exible strip or tape 3 on one side only of which is deposited a narrower layer of gum 4. This tape may be of tough paper or Cellophane, but preferably is of a sized cloth known to the trade as Holland cloth, and the 30 gum layer 4 is of a character which will not dry, or will dry so very slowly that'it will remain in a tacky condition for a long time, or several years, so that it may be said to be in ever-tacky condi tion and will stick to any ordinary surface by 35 tail, reference is directed to my copending case referred to and which describes a gummed tape pressure alone, without requiring any moistening. having a layer of ever-tacky gum on one side of concerned with the present invention as it is treated of fully in my copending application, as is also the relation of the tape surfaces or nature 40 thereof relative to the ever-tacky gum to permit the tape of narrower width than the tape, and of 40 relatively feeble attraction for the surface of the tape as compared with its attraction or power to Such ever-tacky gum is well known and not the tape 3 to be peeled from the ever-tacky layer stick to the surface of an ordinary object such as paper, cardboard, metal, glass, dry paint, etc., so that after ?rmly pressing the ever-tacky face 45 of the tape upon such an ordinary object, the tape proper could be easily peeled away from the ever-tacky layer and leave said layer in ever tacky condition bodily transferred to said object. Such transferring ever-tacky gummed tape as 50 nary surface. However, for convenience the formula of the ever-tacky gum of the copending 45 case, while not speci?cally concerned with in the present case, is here repeated as follows: above described would not work very well on‘v some special surfaces, such as very soft, frail or tion Ibs__About30 5° Rosin oil _____________________ __lbs__About 41/2 highly absorbent surfaces like soft paper or blot ting paper, loosely made soft cardboard in which the material was so weak that it would tend to Benzol _____________ _..' _______ __gals__About 50 4 when the dry gum layer 2 is stuck to an ordi Pale crepe crude rubber, ?rst pref- I erably milled to effect better solu Place in a suitable closed mixer and agitate until dissolved into a smooth thin paste. 55 2 2,1oatas Such a gum forms an ever-tacky layer when coated on paper which will permit a covering The object of having the tape I narrower than tape I is to permit it to be picked up at either strip of Holland cloth, Cellophane, or hard glazed edge with‘ the ?ngernail, when desiring to strip it from the ever-tackygum, for if both tapes paper to be peeled from it, especially if the cover ing strip were given a surface treatment with talc or para?lne. The present invention comprises-the combina tion of the two tapes of Figs. 1 and 2 into a sandwich as shown in Fig. 3 wherein the parts 10 as described bear the same numerals, and from a consideration of which ?gure it will be seen that tape I and its dry gummed layer 2 are co extensive, tape 3 is narrower than tape I, and that the ever-tacky gum layer 4 is narrower than tape 3. Such a combination tape, having a hard and dry gummed outer surface 2, may be freely rolled up upon itself without sticking together. When unrolled its gummed surface 2 may be moistened 20 to make it adhesive and it may then be applied to were the same width this would be very di?loult, especially if some of the moistened gum layer 2 squeezed out along the edges to stick both tapes together when applying the compound tape to the object. This object is further facilitated by having the ever-tacky layer 4 still narrower than 10 tape 3. The object of having the ever-tacky layer 4 much narrower than gummed layer 2 is to pro vide a wider area of attachment of tape l to the object so that it the latter is of soft weak mate 15 rial it will not split or tear, through the upward pull exerted in peeling the tape 3 from the ap plied combination as a unit stress to which the , soft, weak material is subjected may be but a third or less than that effective on the cover strip 20 any ordinary surface or object 5, permitted to set, and the tape 3 peeled away from its layer of ever-tacky gum 1! by pulling with the ?ngers or tape 3 due to the great difference in their overlying adhesive areas. Having thus described my invention, what I as shown in Fig. 4 so as to leave the wide tape | claim is: 25 ?rmly cemented to the object 5 and with the narrower strip or layer of ever-tacky gum 4 ex posed in ever-tacky condition on the outer sur face of the wide tape I so that the object I (which may be an advertising sign) may be itself 30 applied to another surface or object for adherence thereto through means of the ever-tacky layer 4. In forming the compound tape of Fig. 3 I prefer to ?rst coat the tapes I and 3 and bring them together as described, but it is possible to form it otherwise, such for instance as by applying the ever-tacky layer directly to the opposite side of tape I after its gum layer 2 is dry, and there after applying tape 3 as a covering strip to the ever-tacky layer. , A compound gummed tape comprising a strip 275 of paper coated on one side with a moisture activatable glue the same width as the tape and coated on the other side with a layer of pressure sensltive glue of substantially narrower width than the width of said moisture-activatable glue 30 and centrally located on the strip leaving un-‘ coated margins on both longitudinal edges, and. a strip of Holland cloth covering said pressure sensitive glue, said covering of Holland cloth be ing of greater width than the layer of pressure sensitive glue but of lesser width than the width of the paper tape. . ' ' ' ARTHUR BENNETT.