JP2002322439A - Printing tape and releasable liner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printing tape with a releasable liner, capable of being easily tear off, released as a whole at once without breaking in releasing. SOLUTION: This printing tape 1 with the releasable liner is printed with letters on at least one of both the surfaces and has the release liner having excellent straight-tearing properties in one direction, wherein the tape is composed of at least a printing layer 7, a substrate layer 6 positioned on one of both the surfaces of the printing layer 7, a pressure-sensitive adhesive layer 5 positioned on the other surface of the printing layer 7, and the release liner 2 positioned on the surface of the pressure-sensitive adhesive layer 5 opposite to the printing layer 7, and further at least one slit 4 is given to at least the release liner 2 and the pressure-sensitive adhesive layer 5 in the same direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a printing tape such as a label tape and a release liner used for the printing tape, and more particularly, to a printing tape used for filing and organizing equipment, The present invention relates to a release liner that has excellent tear linearity in one direction, does not break during peeling, and is easy to peel.

[0002]

2. Description of the Related Art For example, when arranging goods, a name or the like is written in an easily visible place, but recently, an act of handwriting is not performed, and a printing tape on which characters such as a label tape are printed is used. Most of it. The function of the printing machine has been improved, a lot of information can be put in a small space, the running cost can be reduced, and furthermore, it has a water-resistant laminate tape, and has elasticity that can be pasted on spherical and curved surfaces. With the advent of tapes, printing tapes are expanding their applications.

[0003] Such a printing tape is generally composed of a base material layer, an adhesive layer, and a release liner for protecting the adhesive layer. As a release liner, approximately 150μ
m or thinner paper or resin film is often used. Usually, a printing tape is used after printing a character or the like to an appropriate length on one side of the tape by a printing machine, cutting the tape, and peeling off a release liner from the adhesive layer. Since this printing tape is incorporated as a cartridge in a narrow space of a printing machine, there is a demand for storing a longer printing tape in the limited space. Therefore, it is necessary to make the tape thinner, and the base material layer and the pressure-sensitive adhesive layer are made thinner, and as a release liner, a resin film that is easily maintained in strength even though it is thinner than paper has been used more and more. .

However, the thinner the release liner, the more difficult it is to handle because corners are not easily turned up.
It becomes difficult to peel off the release liner from the pressure-sensitive adhesive layer. Therefore,
A printing tape that can be easily peeled off even with an extremely thin release liner has been desired. However, in response to such a demand, proposals have conventionally been made.

According to Japanese Utility Model Laid-Open Publication No. 63-24248, an adhesive mat film in which a release liner is slit or perforated is disclosed. FIG. 2 is a diagram showing the adhesive mat film. The adhesive mat film 21 has a transparent film coated with an adhesive, and a release liner 22 having slits 24 or perforations 23 attached thereto. is there.

Further, Japanese Utility Model Laid-Open Publication No. 64-37449 discloses an adhesive tape in which a release liner is vertically perforated at the center. FIG. 3 is a view showing the adhesive tape, which is a tape including an adhesive tape 31 and a release liner 32 on which perforations 33 are formed.

As described in the above proposal, when a slit is formed in a release liner, if the portion is bent so that the release liner is on the outside, the release liner is divided into right and left, and the corner is peeled off, and the peeled portion is formed. And the entire release liner can be easily peeled off.

[0008] However, when forming a slit in a release liner, the following problem has occurred. That is, when a slit is formed in the pressure-sensitive adhesive tape with a release liner once formed from the release liner side, it is difficult to form a slit only in the release liner. In a generally used processing machine, the depth of the blade for slitting the release liner is not constant, so that the release liner is left uncut or the slit is formed even in the base material layer. When a slit is formed in the base material layer, the tape itself is easily cut and becomes difficult to handle, and the aesthetic appearance is deteriorated, which is not preferable as a printing tape.

In the method of laminating a release liner in which a slit is formed in advance on an adhesive layer, the release liner sometimes overlaps or opens in the middle of the slit.
If it is slightly open, the adhesive will adhere to the base layer and cannot be pulled out of the cartridge, etc., or the adhesive will seep out and transfer to the base layer, and the transferred adhesive will easily absorb ink, so printing Can not be done neatly.

On the other hand, when a perforation is formed in the release liner, a slit is formed in the above-described release liner if there is a perforated cut at the end of the printing tape cut at a right angle in the length direction. As in the case of the above, an effect that the whole release liner is easily peeled off is produced, but if there is no perforated cut portion at the cut end, it does not contribute to the improvement of the easy peelability at all.

[0011] To improve such problems, further improved proposals have been made. JP-A-7-250
According to No. 96, there is no exudation of the adhesive, and
A printing tape with improved easy peelability is disclosed. FIG. 4 is a view showing an example of the printing tape, which comprises a base layer 46, an adhesive layer 45 and a release liner 42. In order to increase the probability that a cut portion is present at the end of the printing tape 41 cut at a right angle in the length direction, the cut portion occupies a predetermined ratio or more with respect to the non-cut portion. Is provided.
Also, although not shown, at the end of the printing tape cut at right angles in the length direction, so that there is always a perforated cut,
A printing tape in which two perforations are provided in parallel has also been proposed.

[0012] However, as described above, there is a perforated cut portion at an end portion where the printing tape is surely cut at a right angle in the length direction, so that the release liner is easily peeled from the corner,
Even in a printing tape where the release liner does not overlap or open because it is a perforation, grasp the part peeled from the cut part of the perforation and cut the non-cut part of the perforation along the perforation The entire release liner must be peeled.

At this time, for example, Japanese Patent Application Laid-Open No. H10-168
Even if a biaxially stretched polyester film having tear linearity in the longitudinal direction is adopted as described in JP-A-293, even in the case of a printing tape having a length of several hundred mm or more, all the non-cut portions of the perforations are removed. It was difficult to remove the entire release liner while cutting at one time. That is, the break line of the release liner may propagate in the width direction from the non-cut portion in the middle of the perforation, and the release liner may be broken in the middle and must be turned over many times. If the repetition is large, the release liner remains in the form of an island at the center of the pressure-sensitive adhesive layer of the printing tape, and a printing tape on which characters or the like are printed cannot be used.

[0014]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-described conventional problems, and has as its object to be easy to turn over and easily, without cutting along the way, at once. Another object of the present invention is to provide a printing tape provided with a release liner that can be completely peeled off.

[0015]

That is, according to the present invention, there is provided a tape having a release liner on which characters are printed on at least one side and which has excellent tear linearity in one direction, comprising at least a printing layer and a printing layer The base material layer provided on one surface, the pressure-sensitive adhesive layer provided on the other surface of the print layer, the release layer provided on the surface opposite to the print layer of the pressure-sensitive adhesive layer, tape In at least one release liner and at least one pressure-sensitive adhesive layer, at least one slit is provided in one direction. At this time, it is preferable that the printing layer and the base material layer have no slit.

In the present invention, the one direction of the tape is preferably a length direction of the tape.
Further, the thickness of the pressure-sensitive adhesive layer constituting the printing tape of the present invention is preferably about 10 μm or more, and the thickness of the release liner is preferably 120 μm or less.

Further, according to the present invention, there is provided a release liner used in a printing tape and having an easy tear linearity,
Release liner is placed 5m in the length direction at the approximate center in the width direction.
m, a strip having a length of 300 mm and a width of 25 mm. , 90% or more is provided. The thickness of the release liner L is 1
Preferably it is 20 μm or less.

When the above-described release liner L is used as the release liner constituting the printing tape of the present invention, at least one release liner and pressure-sensitive adhesive layer are provided in at least one release liner and adhesive layer in one direction of the tape. It is also preferred that perforations are provided in the book.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the printing tape and the release liner of the present invention will be specifically described, but the present invention is not construed as being limited to these, and the present invention is not limited thereto. Various changes, modifications, and improvements can be made based on the knowledge of those skilled in the art without departing from the scope of the present invention.

The present invention is a release liner made of, for example, a resin film, which has an easy tear linearity in the length direction and is easy to peel off, and a printing tape improved from the prior art which includes the release liner. The printing tape is usually wound and is often housed in a cartridge, but may be in the form of a sheet, and the form is not limited. In the present invention, a continuous cut is called a slit, and a cut portion and a non-cut portion alternately appear as a perforation.

[0021] The problems of the release liner used in the conventional printing tape are arranged, and as a result of various examinations, the following two printing tapes according to the present invention can solve the conventional problem. I was derived. First, the first printing tape is configured as a pressure-sensitive adhesive tape with a release liner having a pressure-sensitive adhesive layer of a predetermined thickness, and when slitting from the release liner side, instead of slitting only the release liner, This is a printing tape in which a slit is formed almost at the center of the thickness of the adhesive layer.

In such a first printing tape, the accuracy of the blade depth at the time of slitting, which the processing machine has,
For example, even if the standard value is about ± 5 μm, the thickness of the pressure-sensitive adhesive layer should be approximately 10 μm or more, preferably 12 μm.
m, the release liner will not be left uncut,
Further, no slit is formed even in the printing layer and the base material layer. The pressure-sensitive adhesive layer having the predetermined thickness absorbs the fluctuation width of the blade depth of the processing machine.

Accordingly, the first printing tape can be manufactured in a state where at least the release liner is completely slit and the printing layer and the base material layer are not slit at all. The pressure-sensitive adhesive layer may have slits but may not have slits. Since the release liner is completely cut, the release liner is easy to be turned up, and unlike the case of perforation, the break line of the release liner does not propagate in the width direction during the peeling and the release liner does not break. In addition, although it is a release liner completely slit, once the base material layer,
Since the process of inserting a slit from the release liner side in the tape on which the printing layer, the adhesive layer, and the release liner are laminated is performed, unlike the case where the previously separated release liner is laminated on the adhesive layer later, the overlapping and opening of the release liner Does not occur, and there is no problem that the pressure-sensitive adhesive seeps out.

Next, the second printing tape uses a release liner having easy tear linearity, and a print using a release liner L whose tear linearity in the longitudinal direction is specified by a predetermined means described later. Tape. In the second printing tape, at least one slit or perforation is provided in at least the release liner L and the adhesive layer in one direction of the tape.

The structure and material of the second printing tape are the same as those of the first printing tape except that the release liner L is used as the release liner. The first printing tape was characterized in that slits were provided, but the second printing tape was not only slits but also perforations. The line does not propagate in the width direction and the release liner does not break. In the second printing tape, the release liner L
And, in the case of providing a perforation instead of a slit in the pressure-sensitive adhesive layer, in order to facilitate turning, as disclosed in JP-A-7-25096, the cut portion is more than a predetermined amount with respect to the non-cut portion. It is preferable to provide perforations that occupy the ratio, or to provide two perforations in parallel so that there is always a perforated cut at the end of the printing tape cut at right angles to the length direction. .

The first and second printing tapes of the present invention (hereinafter, also simply referred to as the printing tape of the present invention) are formed from at least a substrate layer, a printing layer, an adhesive layer, and a release liner. . A character or the like is printed, cut into a desired length, and before use, the release liner is peeled off from the surface of the pressure-sensitive adhesive layer of the pressure-sensitive adhesive tape before use.

In the first and second printing tapes of the present invention, as described above, the release liner is easily turned up,
Also, since all the release liners can be peeled off at once,
Even if it is a thin release liner having a thickness of 20 μm or less, it is possible to sufficiently maintain easy release properties. Further, an extremely thin release liner of 50 μm or less can be applied. The thinner the release liner is, the thinner the printing tape is, so that a longer printing tape can be accommodated in a limited cartridge space. With the same length of printing tape, a smaller cartridge can be used, and the printing machine can be made smaller.
In any case, the cost can be further reduced. The lower limit of the thickness of the release liner is about 12 μm. If it is thinner than this, it is not preferable because even if there are slits or perforations, it will be difficult for human hands to first turn up and the adhesive will easily seep out.

In the first and second printing tapes of the present invention, the direction in which the slits or perforations are provided may be the width direction as in the conventional example shown in FIG. 2, and is not particularly limited. However, it is more preferable to provide slits or perforations in the length direction of the tape because the peeling operation becomes easier.

In the second printing tape of the present invention, the tear linearity in the length direction of the release liner having easy tear linearity is defined as follows, and the release liner L meeting the rule is peeled off. Used as a liner. That is, the release liner L refers to a release liner L having a notch of 5 mm in the length direction at a substantially central portion in the width direction and a length of 300 mm.
mm, a strip having a width of 25 mm, and when the small piece is torn in a length direction from one side, the probability that the tear propagation end reaches the side opposite to the one side is 90% or more. It is a release liner. The higher the probability, the better, and more preferably, it is 95% or more.

Hereinafter, the printing tape of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view in the width direction showing one embodiment of the printing tape of the present invention. As shown in FIG. 1, the printing tape 1 includes a printing layer 7, a base layer 6 provided on one surface of the printing layer 7, and an adhesive layer 5 provided on the other surface of the printing layer 7. And the release liner 2 provided on the surface of the pressure-sensitive adhesive layer 5 opposite to the printing layer 7. Toward the length direction of the tape, only the release liner 2 and the pressure-sensitive adhesive layer 5
One slit 4 is provided. The structure of the printing tape 1 is common to the first and second printing tapes of the present invention. In the case of the second printing tape, perforations 3 may be provided instead of the slits 4.

Next, a method for manufacturing the printing tape 1 of the present invention shown in FIG. 1 will be described. The processing machine used includes a roller and a slit processing blade that rotate together, and a printing tape that is a slit processing object is passed between the roller and the slit processing blade to form a slit. When forming a perforation, a slit processing blade having a chipped portion may be used.

First, each is made of a material described below,
An original tape composed of a base material layer, a printing layer, an adhesive layer, and a release liner is prepared, for example, in a roll. At this time, the thickness of the pressure-sensitive adhesive layer is determined by the accuracy of the depth of the blade at the time of slitting of the processing machine used, in other words, when the blade of the processing machine slightly fluctuates, It is important to make it thicker than width.

Then, the tape raw material is passed between a roller and a rotating slit processing blade so that the surface on the release liner side is on the slit processing blade side, so that the tape raw material has a release liner and an adhesive layer. Are formed with slits. Due to the difference between the distance from the rotation axis of the slitting blade to the roller surface and the radius of rotation of the slitting blade, i.e., the distance from the rotation axis of the slitting blade to the outer periphery of the blade, in the thickness direction of the raw tape, The depth of the slit processing blade can be adjusted. Therefore, the slit may be formed such that this depth is exactly the center of the thickness of the pressure-sensitive adhesive layer of the raw tape.

Hereinafter, constituent materials of the printing tape according to the present invention, surface treatment, and the like will be described. As described above, the printing tape includes at least the base layer, the printing layer, the adhesive layer, and the release liner.

The type of the substrate layer is not particularly limited. Usually, plastic films such as olefin resins such as polypropylene and polyethylene, polyethylene terephthalate, polyvinyl chloride and glassine can be used.

Although the thickness of the base material layer is not limited, it is generally about 20 to 100 μm, and is more preferably about 25 to 50 μm because appropriate strength is obtained and cost is not required. The color of the substrate layer is not limited, but usually, it is preferably transparent so that the color of the lower printing layer can be seen through.

The type of the printing layer for giving the printing tape a background color is not particularly limited. As with the base layer, olefin resins such as polypropylene and polyethylene,
Polyethylene terephthalate, polyvinyl chloride,
A plastic film such as glassine can be used. The same material as the base material layer may be used or different.

Although the thickness of the printing layer is not limited, it is generally about 10 to 50 μm. If the concealing property of the printing tape which does not cause any harm in the manufacturing process can be obtained, the thinner the better, the better the cost is. More preferably, it is about 10 to 20 μm. It is more preferable that the printing layer and the base material layer have waterproofness and elasticity, because the applications are expanded and the added value as a printing tape is improved.

The type of the pressure-sensitive adhesive layer is not particularly limited as long as the adhesive layer adheres the printed layer and various articles to the article and the printed layer. In general, a solvent-based acrylic adhesive, a solvent-based natural rubber-based adhesive, a solvent-based block copolymer-based adhesive, an emulsion-based acrylic adhesive, a hot-melt-based acrylic adhesive, and the like can be used. From the viewpoint of durability, it is preferable to use an acrylic pressure-sensitive adhesive.

The thickness of the pressure-sensitive adhesive layer is determined by the accuracy of the blade depth of the processing machine used for slitting or perforating the raw tape, that is, when the blade of the processing machine fluctuates slightly. May be determined based on the fluctuation range above and below. Generally, since the accuracy of the blade depth of the processing machine is about ± 5 μm, the thickness of the pressure-sensitive adhesive layer is generally about 10 μm or more, preferably about 12 μm, without leaving a release liner. Also, slits or perforations can be processed without forming slits or perforations in the printing layer and the base material layer.

In the printing tape of the present invention,
In order to enhance the adhesion between the base layer and the printing layer, and the printing layer and the pressure-sensitive adhesive layer, and the adhesion durability, an epoxy resin, a vinyl copolymer having a carboxyl group, an acrylic copolymer, etc. It is also preferable to provide as a primer layer.

The release liner that protects the pressure-sensitive adhesive layer of the printing tape and is removed when the tape is used may be a release liner generally used for pressure-sensitive adhesive tapes. The release liner needs to be easily manufactured in a roll shape, a sheet shape, or the like without deteriorating the adhesive properties of the pressure-sensitive adhesive, and is composed of a base material that is easily peeled off from the pressure-sensitive adhesive. The type of the substrate is not particularly limited as long as it can be easily produced in a roll shape, a sheet shape, or the like without deteriorating the adhesive properties of the pressure-sensitive adhesive, but is usually rayon, polyester, nylon, acrylic, or the like. Is used.

The thickness of the release liner is approximately 120 μm
The following is preferred. More preferably, 12-5
It is about 0 μm, and more preferably 20 to 30 μm. The thinner the release liner, the thinner the printing tape,
This is because a longer printing tape can be accommodated in the limited cartridge space. On the other hand, if the tape is too thin, even if the tape has slits or perforations, it is not preferable because it is difficult for a human hand to turn the tape first, and the adhesive is also easily exuded.

In the printing tape of the present invention, the surface of the release liner on the side of the pressure-sensitive adhesive layer has a silicone release agent,
If a long-chain alkyl-based release agent or a release agent such as a fluorine-based release agent has been treated, the release property between the adhesive layer and the release liner is
It is more preferable for further improvement. In addition, depending on the type of the pressure-sensitive adhesive, when a release effect between the release liner and the pressure-sensitive adhesive is provided (for example, an olefin resin such as polypropylene or polyethylene), the release agent may not be applied.

[0045]

EXAMPLES Hereinafter, the present invention will be described based on examples, but the present invention is not limited to these examples. (Example 1) A transparent polypropylene film (P-2261 manufactured by Toyobo Co., Ltd.) having a thickness of 50 µm as a substrate layer.
Was prepared. After applying an acrylic primer to the base layer at 0.3 μm, as a white print layer, Byron 63SS manufactured by Toyobo Co., Ltd. mixed with 20% of titanium oxide was used.
Lamination was performed so that the thickness after application was 18 μm. Next, an acrylic pressure-sensitive adhesive (TM-287 manufactured by Toa Gosei Co., Ltd.)
Was added to 100 parts by weight of Denaseol EX-421 manufactured by Nagase Kasei Co., Ltd.) so that the thickness after drying was 12 μm. Then, as a release liner, a 25 μm-thick polyester film (the one obtained by subjecting an emblem 25 manufactured by Unitika Co., Ltd. to a release treatment) was laminated to obtain a rolled raw tape TP having a width of 25 mm.

Using a processing machine, the obtained tape material T
A slit was formed in P in the length direction from the release liner side to obtain a wound printing tape A1 having a width of 25 mm.
At this time, in the processing machine, the height (distance) from the surface of the roller to the rotation axis of the slit processing blade is adjusted, and the depth of the slit processing blade entering the raw tape TP is adjusted from the release liner side to the pressure-sensitive adhesive layer. Was set to 31 μm, which is equal to the distance to the center of.

(Comparative Examples 1 and 2) The depth of the slit processing blade entering the raw material tape TP is about 55 μm, which is substantially equal to the distance from the release liner side to the surface of the printing layer on the base material layer side (Comparative Example 1). A slit was formed in the length direction of the raw tape TP from the release liner side in the same manner as in Example 1, except that the printing tape B1 was set. Further, the depth of the slit processing blade entering the raw tape TP was set to 25 μm (Comparative Example 2) equal to the thickness of only the release liner, and a printing tape B2 was produced in the same manner.

Using the obtained printing tape, 50 characters are printed by a printing machine, and after being cut into about 300 mm,
When the release liner was peeled off and pasted on a desk, in the printing tape A1, the release liner was completely cut and divided, and the corners of the release liner could be easily turned over. Could be peeled off. The printed characters were also beautiful.

Also in the printing tape B1, the release liner was completely cut and divided, so that the release liner could be peeled off smoothly after being wound. However, the printed characters were blurred. The cause of the blurring of the characters is shown in FIG. 5 because the depth of the slitting blade entering the raw tape TP was set to 55 μm, which is equal to the distance from the release liner side to the surface of the printing layer on the base material layer side. As described above, when the slit processing blade 62 enters the tape raw material TP, the slit processing blade 62 slightly shakes and cuts into the base material layer 6, so that the outer surface of the base material layer 6 opposite to the print layer is removed. It is presumed that the raised portion 52 was formed, and after processing was completed, the raised portion 52 became the concave portion 53 and the surface of the base material layer became uneven.

In the printing tape B2, when the release liner was to be peeled off after the release liner was wound, the release liner was cut off in the middle and could not be peeled off at once. It was presumed that the depth of the slitting blade entering the raw tape TP was shallow, and the release liner was completely cut and not divided. The printed letters were beautiful.

(Examples 2 to 6 and Comparative Examples 3 to 15) As Example 2, a tape material TP having a release liner of PC-12 manufactured by Unitika Co., Ltd. was used.
Ten 5 mm strips were prepared. At this time, the length direction was defined as the MD direction of the raw tape. Then, a cut having a length of 5 mm was formed at the center of one of the short sides of the small piece, and ten test pieces were obtained. The ten test pieces were torn by hand in the length direction from the cuts, respectively, and the number of test pieces whose tear propagation end reached the opposite side of the short side was determined as follows.
Easy tear linearity was measured. The material as the release liner was changed, and the direction of the release liner as the length direction was selected in the MD direction or the CD direction, and the easy tear linearity was measured under the same conditions as in Example 2 (Examples 3 to 6, Comparative Examples 3-1
5). Table 1 shows the results.

The material employed in Examples 2 to 6, in which the length direction, that is, the cut direction and the direction of the original tape have a predetermined relationship, can be suitably used as the release liner L of the present invention. . In the second printing tape of the present invention including the release liner L, even if the release liner and the pressure-sensitive adhesive layer have no slits or are formed with perforations, the release liner can be easily formed. And the entire release liner can be peeled off at once.

In Table 1, PE indicates polyethylene, PP indicates polypropylene, and PET indicates polyethylene terephthalate. The MD direction refers to the flow direction of the raw tape, and the CD direction refers to the width direction of the raw tape.

[0054]

[Table 1]

[0055]

As described above, according to the printing tape of the present invention, when printing a character or the like with a printing machine, preparing a printing tape cut to a desired length, and attaching the printing tape to an object. Even if the tape is long or the release liner is extremely thin, the release liner can be easily turned over and the release liner can be removed at once. There is no possibility that the release liner breaks in the middle and is repeatedly turned over, or that the tape becomes wrinkled at the end and becomes unusable. Therefore, the printing tape becomes easier to handle, and is used more and more widely in conjunction with the introduction of various tapes such as improvement in the function of the printing machine, water resistance, and elasticity.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one embodiment of a printing tape of the present invention.

FIG. 2 is a rear view showing an example of a conventional adhesive mat film.

FIG. 3 is a perspective view showing an example of a conventional adhesive tape.

FIG. 4 is a perspective view showing an example of a conventional printing tape.

FIG. 5 is a cross-sectional view illustrating an example of a problem of a conventional printing tape.

[Explanation of symbols]

1, 41: printing tape, 2, 22, 32, 42: release liner, 3, 23, 33, 43: perforation, 4, 24
... Slit, 5,45 ... Adhesive layer, 6,46 ... Base layer,
7: printing layer, 21: adhesive mat film, 31: adhesive tape, 52: ridge, 53: concave, 62: slit processing blade.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4J004 AA05 AA10 AB03 AB05 CA04 CA06 CC03 CC05 CC06 DA02 DA04 DA05 DB02 EA01 EA06 FA01

Claims (8)

[Claims] 1. A tape having a release liner on which characters are printed on at least one side and has excellent tear linearity in one direction, comprising at least a printing layer and a base material layer provided on one surface of the printing layer. And, a pressure-sensitive adhesive layer provided on the other surface of the printing layer, and a release liner provided on the surface of the pressure-sensitive adhesive layer opposite to the printing layer, and in one direction of the tape, A printing tape, wherein at least one slit is provided in at least the release liner and the pressure-sensitive adhesive layer. 2. The printing tape according to claim 1, wherein no slit is provided in the printing layer and the base layer. 3. The printing tape according to claim 1, wherein the one direction is a length direction of the tape. 4. The printing tape according to claim 1, wherein the pressure-sensitive adhesive layer has a thickness of about 10 μm or more. 5. The release liner has a thickness of about 120 μm.
The printing tape according to any one of claims 1 to 4, which is not more than m. 6. A release liner which is used for a printing tape and has easy tear linearity, wherein the release liner is provided at a substantially central portion in a width direction in a length direction.
300mm long, 25mm wide with notches of mm
And when the piece is torn in a length direction from one side, the probability that the tear propagation end reaches the side opposite to the one side is 90% or more. Release liner L. 7. The release liner L according to claim 6, which has a thickness of 120 μm or less. 8. A tape having a release liner on which characters are printed on at least one side and which has excellent tear linearity in one direction, comprising at least a printing layer and a base material layer provided on one surface of the printing layer. And, a pressure-sensitive adhesive layer provided on the other surface of the printing layer, and a release liner provided on the surface of the pressure-sensitive adhesive layer opposite to the printing layer, and in one direction of the tape, A printing tape using the release liner L according to claim 6 or 7, wherein at least one slit or perforation is provided in at least the release liner and the pressure-sensitive adhesive layer, and the release liner according to claim 6 or 7 is used as the release liner.