JP4878892B2 - Small adhesive label sheet - Google Patents

Description

  The present invention relates to a small pressure-sensitive adhesive label sheet that can be suitably printed by using a line thermal printer, and particularly relates to a small pressure-sensitive adhesive label sheet that is suitably used in a line thermal printer with a peeling device.

  Conventionally, an adhesive label sheet in which various information such as a barcode, a product name, a company name, and a price is printed on the surface of the adhesive label by a barcode printer is known (see, for example, Patent Document 1). A conventional adhesive label sheet will be described with reference to the plan view of FIG. 3 and the BB cross-sectional view of FIG. As shown in FIGS. 3 and 4, the conventional pressure-sensitive adhesive label sheet 20 is composed of a belt-like mount 21 and a pressure-sensitive adhesive label 22 having a slight peeling margin around it. The surface of the backing substrate 23 of the belt-like mount 21 has a release agent layer 24, and the adhesive label 22 is peeled from the release agent layer 24 through an adhesive layer 26 provided on the back surface of the label substrate 25. It is temporarily attached as possible. The pressure-sensitive adhesive label sheet 20 having the above configuration is wound into a roll and attached to, for example, the supply device 41 of the barcode printer 40 shown in FIG. That is, the pressure-sensitive adhesive label sheet 20 fed from the roll 42 is applied with a line thermal head 43 (hereinafter referred to as a thermal head) and a platen while applying a predetermined pressing pressure (hereinafter referred to as a head pressure) to the pressure-sensitive adhesive label 22. While being sandwiched between the rollers 44 and transported by the rotational driving force of the platen roller 44, various information such as barcodes is printed on the surface of the adhesive label 22 by thermal color printing by the heat energy from the heating element of the thermal head 43. After that, the strip-shaped mount 21 is turned by a peeling device 46 provided downstream of the thermal head 43 so that the adhesive label 22 is peeled from the strip-shaped mount 21.

  In this case, since the thermal head 43 performs printing while making contact with the entire width of the adhesive label 22, the thermal head 43 of the barcode printer 40 removes the adhesive label 22 so that the head pressure becomes a predetermined value. The pressing force has been adjusted.

  However, when printing is performed on a narrow, small-sized adhesive label using the barcode printer 40 adjusted with such a general wide adhesive label 22, a problem may occur. 6 is a plan view of an adhesive label sheet 60 in which a small adhesive label 62 is temporarily attached to a belt-like mount 61, and FIG. 7 is a cross-sectional view taken along the line CC in FIG. Such a narrow small adhesive label 62 has a smaller contact width with the thermal head 43 than the wide adhesive label 22 shown in FIGS. 3 and 4, so that the surface of the small adhesive label 62 and the thermal head 43 are separated from each other. The frictional force generated by the contact also increases in inverse proportion to the contact width. As a result, if the head pressure is not adjusted, partial wear of the thermal head 43 is promoted, the degree of adhesion between the thermal head 43 and the surface of the small adhesive label 62 is increased more than necessary, and the print density is high. Or, in extreme cases, the printing may be crushed. Therefore, in order to perform proper printing on the small pressure-sensitive adhesive label 62, it is necessary to adjust the head pressure appropriately for the small pressure-sensitive adhesive label 62. This is troublesome for an operator who is not accustomed to the adjustment. This complicates difficult operations and causes variations in printing due to poor adjustment.

  In general, such an adhesive label sheet 20 is formed by punching out a peripheral area of a predetermined area of an adhesive label base paper, which is temporarily peeled so as to cover one side of the belt-like mount, with a flat die or a die roll, and then around the adhesive label 22. Unnecessary portions (hereinafter referred to as “cass portions”) are removed to form a peeling allowance.

  On the other hand, only the peripheral part of the pressure-sensitive adhesive label was punched out in the above process, and the pressure-sensitive adhesive label sheet in the state left on the belt-like mount was used without removing the residue around the pressure-sensitive adhesive sheet from the pressure-sensitive adhesive sheet. It has been known. With such an adhesive label sheet, even if the width of the adhesive label is extremely small, the contact width between the thermal head and the surface of the adhesive label covers the entire width of the adhesive label sheet, so the thermal head partially wears. There is no such thing.

JP 2002-326616 A

  However, because the adhesive itself has fluidity, simply punching around the adhesive label will cause the adhesive to be extruded from the periphery of the label due to wrapping when the adhesive label sheet is formed into a roll, etc. In some cases, the pressure-sensitive adhesives are connected again, and the pressure-sensitive adhesive label and the residue are connected. Using the pressure-sensitive adhesive label sheet in such a state, even if an attempt is made to peel off the pressure-sensitive adhesive label by turning the transport direction of the belt-like mount and the waste portion with a peeling device, the pressure-sensitive adhesive label and the waste portion are not easily separated, There are problems such as occurrence of defective peeling.

  The present invention has been made in view of such problems, and even when used in a bar code printer having a line thermal head, the print density does not become excessively high and partial wear of the line thermal head does not occur. It is an object of the present invention to provide a small pressure-sensitive adhesive label sheet that can perform suitable printing. Another object of the present invention is to provide a small pressure-sensitive adhesive label sheet that can be suitably peeled off without causing a defective peeling of the pressure-sensitive adhesive label even when used in a peeling device.

In order to solve the above problems, the present invention has the following configuration.
The small pressure-sensitive adhesive label sheet of the present invention, which has been made to solve the above problems, pays attention to the fact that the thermal head pressure is dispersed by increasing the contact width with the line thermal head. a small adhesive label sheet for line thermal printer comprising peelably continuously provided labels, both widthwise end portions of the backing strip is folded successively in the longitudinal direction into the small adhesive label on the same plane The strip-shaped mount is formed so as to be continuous with a constant width at substantially the same height as the small pressure-sensitive adhesive label, and the folded belt-like mount is spaced at least a predetermined distance from the small pressure-sensitive adhesive label. .
The total length in the width direction of the small pressure-sensitive adhesive label and the folded belt-like mount is desirably ½ or more of the length in the width direction of the belt-like mount excluding the folded portion .
In addition, a gap of at least 1 mm is provided between the small pressure-sensitive adhesive label and the folded belt-shaped mount, and the belt-shaped mount is separated by a peeling device that turns the transport direction of the belt-shaped mount and peels the small pressure-sensitive adhesive label. The small adhesive label can be peeled off.

The present invention has the following effects.
According to the small pressure-sensitive adhesive label sheet of the present invention , both end portions in the width direction of the belt-like mount are continuously bent in the longitudinal direction on the same surface as the small pressure-sensitive adhesive label, and are continuous with a constant width at substantially the same height as the small pressure-sensitive adhesive label. Since the contact width with the line thermal head is increased, the pressure from the line thermal head can be dispersed, and wear of the line thermal head and crushing of the print can be prevented.
Also, according to the small type adhesive label sheet, when the total width of the small adhesive labels and folded backing strip provided in backing strip, folded half or more of the backing strip of the full width except the portion, Further, the pressure from the line thermal head can be dispersed, and the wear of the line thermal head and the crushing of printing can be prevented.
Also, between the backing strip by bending the small type adhesive label, and used in at least for 1mm or more intervals are provided, the peeling apparatus for peeling a small adhesive label to deflect the conveying direction of the backing strip Even if it does not generate | occur | produce the peeling defect of an adhesive label, it can peel suitably.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the part same as the past, and the description is abbreviate | omitted.

  FIG. 1 is a schematic plan view showing a configuration according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG. As shown in FIG. 1 and FIG. 2, the small pressure-sensitive adhesive label sheet 1 is composed of a strip-shaped backing sheet 2, a plurality of small-sized pressure-sensitive adhesive labels 3 temporarily attached at a certain interval in the longitudinal direction of the center portion, and a strip-shaped backing sheet 2. And two rows of auxiliary labels 4 temporarily attached in parallel to both ends in the width direction. The belt-like mount 2 includes a mount base material 5 and a release agent layer 6 provided on the surface of the mount base material 5. In addition, the small pressure-sensitive adhesive label 3 and the auxiliary label 4 have the same configuration in this case. The label base material 7, a known thermosensitive color former layer 8 provided on the surface of the label base material 7, and the label base material 7 The thermosensitive color former layer 8 is provided with a pressure sensitive adhesive layer 9 provided on the back surface thereof, and the bar code printer 40 having the thermal head 43 as shown in FIG. It has become.

  Examples of the label base material 7 used for the small-sized adhesive label 3 include paper materials such as coated paper, mirror-coated paper, and high-quality paper, as well as PET (polyethylene terephthalate), PP (polypropylene), PE (polyethylene), PS ( A sheet-like material generally used as the label base material 7 such as a synthetic film material such as polystyrene), name material, synthetic paper, or a composite material combining the above materials can be applied.

  In addition, glassine paper is widely used as the backing substrate 5, but in addition, paper materials such as high-quality paper, coated paper, and mirror-coated paper that are generally used as the label substrate 7, PET ( Synthetic film materials such as polyethylene terephthalate), PP (polypropylene), PE (polyethylene), and PS (polystyrene), name materials, synthetic paper, and composite materials combining the above materials can be used.

  The thickness of the label substrate 7 is appropriately selected from 5 to 500 μm depending on the intended use, and a thickness of 25 to 100 μm can be particularly preferably used. Also, the thickness of the backing substrate 5 can be selected in various thicknesses depending on the application as in the label backing 7. However, the strip backing 2 is discarded after the small adhesive label 3 is peeled off. The thickness of is preferably thin, and is usually 25-100 μm.

  The thickness of the pressure-sensitive adhesive layer 9 provided on the back surface of the small pressure-sensitive adhesive label 3 and the auxiliary label 4 is appropriately selected from 5 to 100 μm, but is preferably about 15 to 30 μm from the viewpoint of processability and suitability for use. Can be used for

  The small pressure-sensitive adhesive label 3 and the auxiliary label 4 are pressure-sensitive adhesives extruded from the back surface of the label substrate 7 of the small pressure-sensitive adhesive label 3 and the auxiliary label 4 by winding when the small pressure-sensitive adhesive label sheet 1 is wound into a roll. There is a sufficient distance that the small pressure-sensitive adhesive label 3 and the auxiliary label 4 are not reattached to each other or the extruded pressure-sensitive adhesive, and the release agent layer 6 of the belt-like mount 2 can be peeled off via the pressure-sensitive adhesive layer. Is provided. Specifically, as described above, the thickness of the pressure-sensitive adhesive layer is 5 to 100 μm, and most of them are 15 to 30 μm. Therefore, the distance between the small pressure-sensitive adhesive label 3 and the auxiliary label 4 (L1, L2) By setting the thickness to at least 200 μm or more, preferably 1 mm or more, it is possible to prevent re-adhesion between the pressure-sensitive adhesives due to winding or the like.

  Further, when the small pressure-sensitive adhesive label 3 is processed and formed by using a general label processing method, that is, the residue is removed from the pressure-sensitive adhesive label sheet (not shown) by so-called scrap raising and the small pressure-sensitive adhesive label 3 and the auxiliary label. 4 is formed, it is necessary to prevent the residue from being cut when raising the residue. In this case, although the breaking strength of the base material varies depending on the material and thickness of the label base material 7, the distance between the small adhesive label 3 and the auxiliary label 4 (L1, L2) is, for example, a coated paper having a thickness of about 70 μm. Is preferably provided at least 5 mm or more.

  In general, a barcode printer 40 having a thermal head 43 with a width close to the width of the pressure-sensitive adhesive label sheet to be used is selected. This is because using the full width of the thermal head 43 as much as possible causes less head pressure deviation and suppresses variations in print density, and also reduces partial wear. In particular, in the case of a so-called cantilever type barcode printer 40 in which the thermal head 43, the platen roller 44, etc. are provided on one side of the frame 47 of the barcode printer 40, the frame 47 side always remains even if the size of the adhesive label changes. In many cases, printing is performed with the pressure-sensitive adhesive label sheet abutted. In this case, the bias of the head pressure is increased, and the tendency of partial wear on the frame 47 side of the thermal head 43 is particularly remarkable.

  On the other hand, the small pressure-sensitive adhesive label sheet 1 of the present invention has an extremely small width as compared with the general pressure-sensitive adhesive label 22, and the head pressure concentrates on the small pressure-sensitive adhesive label 3 to exceed the set value of the head pressure. Therefore, the pressure from the thermal head 43 is adjusted by providing the auxiliary label 4 in the width direction of the belt-like mount 2. Although the auxiliary label 4 functions effectively for pressure reduction even if the width is narrow, the total length (W1 + W2 + W3) of the small adhesive label 3 and the two rows of auxiliary labels 4 is generally the width of the belt-like backing sheet 2 It is preferable that it is at least 1/2 or more of the length in the direction (W1 + W2 + W3 + L1 + L2). Under this condition, the head pressure applied to the small adhesive label 3 and the two rows of auxiliary labels 4 can be suppressed to at least twice that of the wide adhesive label 22 shown in FIG. It is possible to prevent problems due to local wear and crushing of printing.

Manufacture of the small pressure-sensitive adhesive label 3 of the present embodiment is performed as follows, for example.
A base sheet of heat-sensitive sheet, on which a heat-sensitive sheet provided with the heat-sensitive color former layer 8 is temporarily attached so as to cover one side of the belt-like mount 2, is set in a printing machine. After punching the boundary portion of the predetermined area set as the label 4 using a processing method such as a flat die or a die roll, an unnecessary portion (cass portion) around the small adhesive label 3 is peeled and removed. The small pressure-sensitive adhesive label 3 and the auxiliary label 4 are formed, wound into a roll shape by a winding device 48, and further cut into a necessary size. During this process, necessary printing such as product name and company name can be applied to the surface of the small pressure-sensitive adhesive label 3. Further, a timing mark (not shown) used for recognizing the leading portion of the label when printing with the barcode printer 40 can be applied to the back surface of the belt-like mount 2 by printing.

Next, a case where the small pressure-sensitive adhesive label sheet 1 according to the embodiment of the present invention is printed by the barcode printer 40 shown in FIG. 5 and the small pressure-sensitive adhesive label 3 after printing is peeled will be described.
The small adhesive label sheet 1 is wound in a roll shape and attached to the supply device 41 of the barcode printer 40. The small adhesive label sheet 1 fed out from the roll 42 is sandwiched between the thermal head 43 and the platen roller 44, and is provided on the back surface of the belt-like mount 2 by the sensor 49 while being conveyed by the rotational driving force of the platen roller 44. After printing various information such as a barcode on the surface of the small pressure-sensitive adhesive label 3 by the thermal energy from the heating element 45 of the thermal head 43 under a predetermined head pressure while checking the timing mark, The strip-shaped mount 2 is turned by the peeling device 46 provided downstream of the head 43, and the adhesive label 22 is peeled from the strip-shaped mount 2. Here, the auxiliary label 4 is taken up by the take-up device 48 of the barcode printer 40 together with the belt-like mount 2 without being peeled off.

  As described above, the small pressure-sensitive adhesive label sheet 1 of the present invention is provided with the auxiliary labels 4 having the same thickness as the small pressure-sensitive adhesive labels 3 at both ends in the width direction of the belt-like mount 2, and the head pressure of the thermal head 43 is assisted. Since it is distributed with respect to the label 4, it is possible to prevent problems due to local wear of the thermal head 43, crushing of printing, and the like, compared to when the small adhesive label 3 is used alone.

  The configuration of the above embodiment is an example, and it is needless to say that the configuration can be appropriately changed without departing from the gist of the present invention. For example, any shape of the auxiliary label can be adopted as long as a predetermined interval is provided between the auxiliary label and the adhesive label to facilitate the peeling of the adhesive label. Further, the auxiliary label does not need to be formed by so-called scrap raising, and may be separately formed and attached to both ends in the width direction of the belt-like mount on which the small adhesive label is temporarily attached. Moreover, you may form an auxiliary | assistant label so that it may be the same height as a small adhesive label by bending the both ends of a strip | belt-shaped mount.

1 is a schematic plan view showing a configuration according to an embodiment of the present invention. AA sectional drawing of FIG. The schematic plan view which shows the structure of the adhesive label sheet for the conventional barcode printing. BB sectional drawing of FIG. The schematic side view which shows the structure of a barcode printer provided with a line thermal head. The schematic plan view which shows the structure of the adhesive label sheet | seat in which the narrow adhesive label was temporarily attached. CC sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Small adhesive label sheet 2 Strip | belt-shaped mount 3 Small adhesive label 4 Auxiliary label 5 Mount base material 6 Release agent layer 7 Label base material 8 Thermal coloring agent layer 9 Adhesive layer 20 Adhesive label sheet 21 Band-shaped mount 22 Adhesive label 23 Mount base material 24 Release agent layer 25 Label base material 26 Adhesive layer 40 Barcode printer 41 Supply device 42 Roll 43 Line thermal head (thermal head)
44 Platen Roller 45 Heating Element 46 Peeling Device 47 Frame 48 Winding Device 49 Sensor 60 Adhesive Label Sheet 61 Band Mount 62 Small Adhesive Label

Claims (1)

A small-sized adhesive label sheet for a line thermal printer in which a small-sized adhesive label is continuously connected in the longitudinal direction of the belt-like mount so as to be peelable.
Both widthwise end portions of the backing strip, the small adhesive labels and longitudinally folded in succession to the same plane is formed so as to continuously with a constant width smaller adhesive label substantially the same height,
A small adhesive label sheet, wherein the folded belt-like mount is spaced at least a predetermined distance from the small adhesive label.

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