This application claims priority from International Application No. PCT/US03/05996 filed Feb. 28, 2003.
The present invention relates to label sheets. More particularly, the present invention relates to a design for label sheets in which the labels may be easily removed.
Address labels on printable 8½×11 and A4 sheets have been in use for a number of years as a means of printing a medium to large number of addresses or other information in a relatively short period of time. After the label sheets have been printed, these labels must then be removed from the sheet and applied to an envelope or other substrate. The standard method for removing the labels by hand is that the user bends back the label sheet somewhere in the vicinity of one of the edges or corners of the first label to be removed. This causes a separation between the label and the liner. The user grasps the label in the area where the separation has been created, and removes the label from the sheet. This operation is then repeated for each label. This operation can be somewhat difficult and time consuming, and requires a fair amount of manual dexterity. In addition, some combinations of materials such as a thin or flexible face and thick paper liner can be difficult to die cut without cutting into the liner. When the die cut extends into the liner, the user can accidentally tear off a section of the liner in the process of removing the label from the liner.
Label strips or webs have also been invented for use with automated label removal and placement machinery. U.S. Pat. No. 5,788,284 issued to Hirst discloses a label strip with a cut running down the centerline of the release liner and underneath the center of the individual labels. The label strip moves over a V-shaped notch in a separator plate, thereby automatically separating the labels from the release liner.
U.S. Pat. No. 5,182,152 issued to Ericson discloses a Bible index label dispensing sheet having a weakened line in the backing and fold lines in the individual labels. A release strip overlies the weakened backing line on one side of each horizontal row of labels. The release strip acts as an adhesive tape to prevent premature rupture of the sheet. The user grasps and pulls away the release strip, and tears off the backing from a portion of the horizontal row of labels.
The present invention provides a label sheet assembly which may be fed through a printer such as a laser printer, an ink jet printer, or other printer attached to a personal computer, for desktop printability. Thereafter, a narrow strip of the release liner can be torn off in a single motion. This exposes a narrow strip of each label within a row or column of labels, allowing the labels to be easily removed and placed on some other object or substrate one-by-one. In a label sheet which has a border or matrix surrounding the labels and/or running between the labels or portions of the labels, both the release liner and the matrix have weakened separation lines therein. The separation lines are formed by a series of cuts and ties in the release liner and in the matrix. The ties are preferably strongest near the edges of the sheet and weaker in the interior portion of the sheet. This allows the sheet to resist tearing along the weakened separation lines due to normal handling or printing in the printer, but once the tearing has begun the tearing continues easily until an entire strip of the release liner has been stripped away. A notch is preferably formed in a release liner and the matrix if applicable at each end of the weakened separation line. The notch is aligned with the weakened separation lines in both the liner and in the matrix. The notch helps to ensure that tearing will begin along the weakened separation lines. The two separation lines are sufficiently close together that the user can tear away the strip of release liner from the remainder of the sheet in a single motion without having to remove a separate release strip, and the tearing, once begun, will continue until the release liner is torn entirely away from the remainder of the sheet. The size of the cuts and the size of the ties are chosen so that the assembly is strong enough to be fed through a printer such as a laser printer or an ink jet printer, but weak enough so that the user can tear off the release liner strip along the separation line in an easy and fluid motion without any other mechanical preparation of the label sheet between the printing and the tearing steps. The ratio of cut length to overall separation line length is greater than 95% to ensure ease of separation. Preferably, the separation line lies approximately 0.6 centimeters (approximately ¼ inch) from the edge of a column or column of labels. In this way there is sufficient overhang of the exposed portion of the labels that a user can easily grasp the labels, but a sheet of labels which has had one column or column of labels partially exposed will not have so much exposed adhesive area that the label sheet will readily stick to a desk or other surface on which the label sheet is placed.
In one aspect therefore the invention is of a label sheet assembly modified for easy removal of labels by hand, comprising a release liner and a sheet of facestock material releasably adhered to the release liner, the facestock material including at least a first column of labels formed therein and a matrix at least partially bordering the labels, wherein a first weakened separation line is formed in the release liner below the column of labels and offset from a center of the column of labels toward an edge of the labels, and a second weakened separation line is formed in the matrix running generally parallel to the first weakened separation line. The release liner has a notch aligned with the two weakened separation lines, and preferably a notch at either end of the separation lines. The weakened separation lines are offset from each other by a short distance so that a user can tear off a strip of the liner and a strip of the matrix in a single motion leaving each label within the column of labels with a portion of its liner removed, thereby allowing easy removal of the labels from the label sheet assembly after the tearing operation without the need for the user to perform any other physical preparation of the label sheet between the printing and tearing operations. The weakened separation lines are preferably formed by cuts and ties in the liners and cuts and ties in the matrix when present, with the strongest of the ties being positioned next to the edges of the assembly or the notch when present. For label sheets having multiple columns of labels, the sheet has a weakened separation line in the liner and in the matrix when present below each column of labels.
Exemplary embodiments of the invention will be further described below with reference to the drawings, in which like numbers refer to like parts.
The distance between liner separation line 30 and the cuts and ties 22/24 in the matrix which form matrix separation line 20 is exaggerated in the figures for illustration purposes. The separation lines in the liner and in the matrix are preferably placed close enough together such that, after assembly 10 has been printed on by a printer, a user can tear off the strip 26 of liner and matrix as illustrated in
Both the matrix separation line 20 and the liner separation line 30 run parallel to the edge of a column of labels and disposed about 0.6 centimeters from the edge of the column. The exact distance is not critical. Preferably, however, the separation lines are offset from the edge of the column of labels far enough so that when strip 26 is removed labels 12 can be easily grasped and removed by the user. At the same time, the separation lines are close enough to the edge of the labels such that when strip 26 is removed a narrow enough edge of the labels is exposed so that when the label sheet is placed onto a table or similar surface, the exposed edge of the unremoved labels 12 do not easily and inadvertently stick to the table.
The purpose of these structures will now be described with reference to
Of course, the labels on the label sheet need not be generally rectangular in shape and butting against each other as in the first embodiment shown in
The size of the cuts and the size of the ties are chosen so that the assembly is strong enough to be fed through a printer such as a laser printer or an ink jet printer, but weak enough so that the user can tear off the release liner strip along the separation line in an easy and fluid motion without any other mechanical preparation of the label sheet between the printing and the tearing steps. The ratio of cut length to overall separation line length is greater than 95% to ensure ease of separation. It has been found that an average tensile strength of the facestock and liner along the separation lines of 6 gm/cm produces good results, and it is expected that values of about 4 gm/cm to 10 gm/cm would also produce good results, and that value of about 2 gm/cm to 15 gm/cm would also be acceptable.
As shown in
In yet another possible embodiment, the label assembly would not even include a matrix bordering the labels. In
In a still further embodiment, the label sheet could be symmetrical. For example, a label sheet could include two columns of labels. For the right hand column of labels, separation lines would be offset slightly from the right hand edge of that right hand column of labels, and for the left hand column of labels, separation lines would be offset slightly from that left hand edge of the left hand column of labels.
Additionally, it will be understood that the present invention can be used with various types and media of labels such as metallic foil, clear plastic, MYLAR®, and other well known materials. The labels could be colored or clear, and could contain pre-printed indicia such as text, two dimensional graphic or photographic images, or holographic images. The invention could be used with a variety of printing devices including but not limited to printers for use with a personal computer.
The present invention is well suited for applications in which the labels will be individually removed by hand. However, the invention is not limited to hand use. The invention could be used with automated machinery for tearing strip 26 away and thereafter placing labels 12 on a substrate. The invention could also be used in applications in which a plurality of labels are to be positioned over one or more substrate objects and applied thereto as a group in the same relative positions on which those labels are found on label assembly 10.
It will be appreciated that the term “present invention” as used herein should not be construed to mean that only a single invention having a single essential element or group of elements is presented. Although the present invention has thus been described in detail with regard to the preferred embodiments and drawings thereof, it should be apparent to those skilled in the art that various adaptations and modifications of the present invention may be accomplished without departing from the spirit and the scope of the invention. For example, different sizes of label assemblies could be used, either with or without matrices. The labels could be of various shapes and sizes, and need not all be of the same shape or size. The pressure sensitive adhesive could be weak or strong. The term “standard size” will be understood to mean approximately standard size, and “8½ in.×11 in.” and “A4” and the like will be understood to mean approximately those sizes. The weakened separation lines could be formed by various known methods. The weakened separation lines are generally linear and parallel, but need not be strictly linear or strictly parallel. Accordingly, it is to be understood that the detailed description and the accompanying drawings as set forth hereinabove are not intended to limit the breadth of the present invention, which should be inferred only from the following claims and their appropriately construed legal equivalents.
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/US03/05996 | 2/28/2003 | WO | 00 | 8/12/2004 |
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WO01/84550 | 11/8/2001 | WO | A |
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