JP2007176013A - Cassette for printing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cassette for printing in which a tape for printing that is subjected to a corrosion prevention treatment to an object to be attached is incorporated. <P>SOLUTION: In the cassette for printing, a laminated film 13 and a double-faced tape 11 are wound around. The laminated film 13 is stuck to a first pressure sensitive adhesive layer 32 applied to one face side of a base film 31 of the double-faced tape 11. The tape for printing 5 is thus generated. The tape for printing 5 can be stuck to the object to be attached by a second pressure sensitive adhesive layer 33 exposed by unsticking a release paper 34 of the double-faced tape 11. In this point, the second pressure sensitive adhesive layer 33 which comes in face contact with the object to be attached is formed of a second pressure sensitive adhesive free of acids (excluding unsaturated carboxylic acids). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a printing cassette in which a double-sided tape having an adhesive layer is wound.

Conventionally, by using a tape printer with a printing cassette mounted thereon, it is possible to create a tape with letters on which the printing tape is printed (for example, see Patent Document 1). And since the adhesive surface will be exposed if the release tape is peeled off, the created tape with a character can be affixed on a to-be-adhered body.
JP-A-8-58211

  However, when the adherend is a photograph, a copper plate or the like, the adherend may corrode from a portion in contact with the adhesive surface of the letter tape after a while after the letter tape is attached.

  Therefore, the present invention has been made in view of the above-described points, and an object of the present invention is to provide a printing cassette including a printing tape in which corrosion prevention is applied to an adherend.

  The invention according to claim 1 made to solve this problem is a printing cassette in which a laminate film constituting a printing tape and a double-sided tape are wound, the double-sided tape comprising a base film and A first pressure-sensitive adhesive layer that is applied to one side of the base film and formed with a first pressure-sensitive adhesive for attaching the laminate film; and a release paper that is attached to the other side of the base film; A second pressure-sensitive adhesive layer that is applied between the base film and the release paper and is formed of a second pressure-sensitive adhesive, wherein the second pressure-sensitive adhesive is acid-free. .

  Here, the “second pressure-sensitive adhesive” is mainly composed of a copolymer obtained by copolymerization of any monomer such as acrylic, rubber or silicone. Additives (for example, a crosslinking agent, a tackifier, a softening agent, a stabilizer, a pigment, etc.) may be blended.

  “Acid free” means that an unsaturated carboxylic acid (for example, acrylic acid, methacrylic acid, itaconic acid, maleic acid, etc.) is not used.

  Therefore, “the second pressure-sensitive adhesive is acid-free” means that the pressure-sensitive adhesive produced using a monomer that does not contain an unsaturated carboxylic acid or a single substance that does not contain an unsaturated carboxylic acid. It means a pressure-sensitive adhesive produced using an additive not containing a monomer and an unsaturated carboxylic acid.

  The invention according to claim 2 is the printing cassette according to claim 1, wherein the value of the slow adhesive force of the second adhesive to the PET film is in the range of 1 to 10 N / 20 mm. It is characterized by being below the value of the slow adhesive force of the first pressure-sensitive adhesive to the PET film.

Here, the “value of the slow adhesion force to the PET film” refers to the value of resistance measured using a measuring machine of “Autograph AGS-50ND” manufactured by Shimadzu Corporation. The measuring method is as follows.
(1) A double-sided tape or a printing tape having a width of 20 mm and a length of 160 mm is used as a measurement sample.
(2) The measurement sample is attached to the PET film by reciprocating once with a 2 kg rubber roller.
“PET” is an abbreviation for polyethylene terephthalate (hereinafter the same).
(3) The measurement sample attached to the PET film is fixed to the stainless steel plate so that the longitudinal direction of the measurement sample coincides with the vertical direction.
(4) The measurement sample that is hooked on the lower end of the measurement sample in a vertical state is moved upward along the stainless steel plate at a slow speed of 5 mm / min, thereby peeling the measurement sample in the 180-degree direction.
(5) The resistance force when the measurement sample is peeled in the 180-degree direction is measured by the measurement unit.

  The invention according to claim 3 is the printing cassette according to claim 1, characterized in that the coating thickness of the second pressure-sensitive adhesive layer is in the range of 10 to 50 μm.

  That is, in the printing cassette of the present invention, the laminate film and the double-sided tape are wound, and the laminate film is attached to the first pressure-sensitive adhesive layer applied to one side of the base film of the double-sided tape. It becomes a tape for printing. The printing tape can be attached to the adherend by the second pressure-sensitive adhesive layer that is exposed by peeling the release paper of the double-sided tape. Since the pressure-sensitive adhesive layer is formed of an acid-free second pressure-sensitive adhesive (which does not contain unsaturated carboxylic acid), even if a printing tape is affixed to the adherend, the adherend adheres to the adherend. The surface will not corrode.

  Hereinafter, a printing cassette according to the present invention will be described in detail with reference to the drawings based on an embodiment of the present invention. FIG. 2 is a perspective view of the printing cassette. As shown in FIG. 2, the printing cassette 1 of this embodiment has an upper cassette case 2 and a lower cassette case 3, and a printing tape 5 (tape with letters) is discharged from a tape discharge portion 4. . Reference numeral 6 denotes an ink ribbon.

  FIG. 3 is a plan view of the printing cassette 1 excluding the upper cassette case 2 (see FIG. 2). In FIG. 3, in the lower cassette case 3 of the printing cassette 1, a tape spool 12 wound with a double-sided tape 11, a film spool 14 wound with a laminate film 13, and an ink ribbon 6 are wound. A ribbon supply spool 15 and a ribbon take-up spool 16 are rotatably arranged in cooperation with a spool support portion (not shown) formed in the upper cassette case 2 (see FIG. 2).

  In this respect, the laminate film 13 is a film tape made of PET, and the inner side wound around the film spool 14 becomes a printing surface. Therefore, the laminated film 13 wound around the film spool 14 is guided from the guide pin 17 erected on the lower cassette case 3 to the arm 19 formed on the lower cassette case 3 via the rotatable guide roller 18. Further, after being exposed from the arm portion 19 outside the thermal head placement portion 20, it is discharged from the tape discharge portion 4 to the outside of the printing cassette 1 through the guide member 21 and the feed roller 22.

  Further, the ink ribbon 6 is wound around the ribbon supply spool 15 with the ink application side surface inside, and the ink ribbon 6 wound around the ribbon supply spool 15 in this way is transferred from the arm portion 19 to the thermal head. After being exposed on the outside of the arrangement part 20 and guided so that the ink application surface and the printing surface of the laminate film 13 are superimposed, the printing of the laminate film 13 is performed by being guided along the outside of the guide member 21. It leaves the surface and is taken up on the ribbon take-up spool 16.

  On the other hand, the double-sided tape 11 has a first pressure-sensitive adhesive layer applied and formed on one side of a base film made of PET, and a second pressure-sensitive adhesive on the other side of the base film. The second pressure-sensitive adhesive layer is applied and formed by application, and a release paper is attached to the second pressure-sensitive adhesive layer. The double-sided tape 11 is wound around the tape spool 12 with the release paper side facing outside, and the double-sided tape 11 wound in this way is coated with the first adhesive layer by the feed roller 22. By being guided so that the surface and the printing surface of the laminate film 13 are superimposed, the laminate film 13 is attached and discharged from the tape discharge unit 4 to the outside of the printing cassette 1.

  As a result, the printing tape 5 composed of the laminate film 13 and the double-sided tape 11 is discharged from the tape discharge portion 4 of the printing cassette 1. FIG. 4 shows an outline of a process in which the double-sided tape 11, the laminate film 13, and the ink ribbon 6 are guided on the lower cassette case 3 as described above.

  FIG. 1 shows a cross-sectional view of the printing tape 5 taken along line AA in FIG. As shown in FIG. 1, the printing tape 5 includes a laminate film 13 and a double-sided tape 11. In this respect, as described above, the double-sided tape 11 is formed by coating the first pressure-sensitive adhesive layer 32 by applying the first pressure-sensitive adhesive to one side of the base film 31 made of PET, A second pressure-sensitive adhesive layer 33 is applied and formed on the other surface side by applying a second pressure-sensitive adhesive, and a release paper 34 is attached to the second pressure-sensitive adhesive layer 33. Then, the print surface of the laminate film 13 to which the ink 41 is adhered and the first pressure-sensitive adhesive layer 32 are overlapped, whereby the laminate film 13 is affixed to the double-sided tape 11 and becomes the print tape 5. Further, the printing tape 5 can be attached to the adherend by the application surface of the second pressure-sensitive adhesive layer 33 exposed by peeling the release paper 34.

  However, the second pressure-sensitive adhesive forming the second pressure-sensitive adhesive layer 33 is mainly composed of a copolymer obtained by copolymerization of any monomer such as acrylic, rubber or silicone. Regardless of the presence or absence of additives (eg, crosslinking agents, tackifiers, softeners, stabilizers, pigments, etc.), unsaturated carboxylic acids (eg, acrylic acid, methacrylic acid, itaconic acid, maleic acid, etc.) Those not included in any of the monomers and additives (hereinafter referred to as “acid-free”) are used.

  On the other hand, the first pressure-sensitive adhesive forming the first pressure-sensitive adhesive layer 32 may be the same as the above-described second pressure-sensitive adhesive, but includes other pressure-sensitive adhesives (for example, unsaturated carboxylic acid). Other than Acid Free may be used.

  The printing cassette 1 is set in a cassette mounting portion of a tape printing device (not shown) to produce a tape with characters (tape with characters printed on the printing surface of the printing tape 5). The cassette mounting portion of the tape printer is provided with a cutter device (provided with a cutting blade) (not shown) for cutting the tape with letters discharged from the discharge portion 4 of the printing cassette 1. Since the configuration of the printing cassette 1 described with reference to FIG. 2 and the like and the configuration of a tape printing apparatus in which such a printing cassette 1 is mounted to produce a tape with letters are well known, the printing cassette 1 or tape A detailed description when creating a tape with letters by a printing apparatus is omitted.

  Next, with respect to the printing tape 5, various coating thicknesses of the second pressure-sensitive adhesive layer 33 of the double-sided tape 11 (5, 10, 20, 30, 40, 50, 60, 70, 80 μm in total 9 types) ), And examined the interrelationship between the slow adhesion force to the PET film, the protruding width, the pasting performance, the cutter durability, and the remaining adhesive measurement items. FIG. 7 is a table showing the measurement results.

The application thickness of the first pressure-sensitive adhesive layer 31 of the double-sided tape 11 was the same as the application thickness of the second pressure-sensitive adhesive layer 33.
Hereinafter, each measurement item will be described.

The slow adhesion force to the PET film refers to the resistance measured by the following setup using a measuring machine of “Autograph AGS-50ND” manufactured by Shimadzu Corporation. FIG. 5 shows the measurement principle of the slow adhesion force to the PET film. That is, the slow adhesion force to the PET film was measured by the following setup.
(1) The measurement sample 51 was obtained by cutting the printing tape 5 into a size of 20 mm wide × 160 mm long.
(2) The release paper 34 of the printing tape 5 that has become the measurement sample 51 is peeled off, the application surface of the second pressure-sensitive adhesive layer 33 is aligned with the PET film 54, and a 2 kg rubber roller is reciprocated once on the surface of the measurement sample 51. Thus, the measurement sample 51 was attached to the PET film 54.
(3) The measurement sample 51 attached to the PET film 54 was fixed to the stainless steel plate 52 so that the longitudinal direction of the measurement sample 51 coincided with the vertical direction.
(4) 180 degree direction peeling of the measurement sample 51 by moving the measurement part 53 hooked on the lower end of the measurement sample 51 in a vertical state along the stainless steel plate 52 at a slow speed of 5 mm / min. Went.
(5) The resistance (N / 20 mm) when the measurement sample 51 was peeled in the 180-degree direction was measured by the measurement unit 53 as a slow adhesion force of the second pressure-sensitive adhesive layer 33 to the PET film.

The protruding width is measured by the method schematically shown in FIG. 6 and refers to the protruding width of the adhesive that protrudes from the side edge of the printing tape 5. That is, in order to measure the protruding width, first, the printing tape 5 cut to a size of 12 mm × 15 mm is used as a measurement sample 61, and the release paper 34 of the printing tape 5 that becomes the measurement sample 61 is peeled off. The application surface of the second pressure-sensitive adhesive layer 33 is set on the lower glass substrate G1 with the application surface on the lower surface, the upper glass substrate G2 is set on the upper surface of the measurement sample 61, and the measurement sample 61 is loaded on the upper glass substrate G2. The weight W is placed so that the applied load becomes 6 kg / cm ^2, and this is left to stand for 24 hours in a thermostatic chamber adjusted to 55 ° C., and then the side edge of the measurement sample 61 The protruding width d (μm) of the protruding adhesive was measured using a microscope.

  The pasting performance refers to a measurement item determined by the following method. That is, a sample obtained by cutting the printing tape 5 into a size of width 12 mm × length 100 mm is used as a measurement sample, and the release paper 34 of the printing tape 5 that is the measurement sample is peeled off to apply the application surface of the second adhesive layer 33. , By aligning with the embossed polypropylene plate, observe the state when one week has passed after pasting the measurement sample on the polypropylene plate, and the printing tape 5 is good that does not float against the polypropylene plate It is determined that the end of the printing tape 5 has a float of less than 10 mm with respect to the polypropylene plate, and the end of the printing tape 5 is not less than 10 mm with respect to the polypropylene plate. A thing with a float was judged as impossible (x).

  The cutter durability is a measurement item determined by the following method. That is, the cutting tape 5 having a width of 12 mm discharged from the printing cassette 1 is repeatedly cut to a length of about 20 mm by the cutter device, and when the number of continuous cuts reaches 1000 times, the cutter device is used. The adhesive adhesion width from the cutting edge of the cutting blade is measured with a scale, and the adhesive adhesion width of less than 1 mm is judged as good (◯), and the adhesive adhesion width of 1 mm or more and less than 1.5 mm is acceptable (Δ). The pressure-sensitive adhesive adhesion width was determined to be improper (x) when the adhesive adhesion width was 1.5 mm or more.

  The adhesive residue is a measurement item determined by the following method. That is, a sample obtained by cutting the printing tape 5 into a size of width 12 mm × length 100 mm is used as a measurement sample, and the release paper 34 of the printing tape 5 that is the measurement sample is peeled off to apply the application surface of the second adhesive layer 33. After attaching the measurement sample to the stainless steel plate by aligning with the stainless steel plate, peel off the measurement sample from the stainless steel plate after 24 hours and visually check whether the stainless steel plate has adhesive. If there was no adhesive on the stainless steel plate, it was judged as good (◯), and if there was adhesive on the stainless steel plate, it was judged as impossible (×).

  Here, based on the table | surface which showed the measurement result of FIG. 7, about the slow adhesive force with respect to PET film in the printing tape 5, the correlation of each measurement item of a protrusion width, sticking performance, cutter durability, and adhesive residue. consider.

  According to the table showing the measurement results in FIG. 7, the measurement results of the pasting performance, the cutter durability, and the adhesive residue are determined to be good (◯) or acceptable (Δ). It is estimated that the value of the slow adhesion force to the PET film is in the range of 1 to 10 N / 20 mm, the coating thickness of the second pressure-sensitive adhesive layer 33 is in the range of 10 to 50 μm, and the protrusion width is less than 130 μm It is estimated that there is.

  Further, if only focusing on the cutter durability, if the application thickness of the second pressure-sensitive adhesive layer 33 is 50 μm, the protrusion width is suppressed to less than 130 μm, and the cutter durability is determined to be acceptable (Δ). It can be said that the cutter apparatus can be used. Furthermore, if the coating thickness of the second pressure-sensitive adhesive layer 33 is 40 μm or less, the protrusion width is suppressed to less than 100 μm, and the cutter durability is determined to be good (◯). Performance can be improved.

  When attention is paid to the slow adhesive force to the PET film, the slow adhesive force to the PET film is for the second pressure-sensitive adhesive layer 33. In the printing tape 5 having a force exceeding 10 N / 20 mm, the second pressure-sensitive adhesive layer 33 causes cohesive failure. Therefore, adhesion of the pressure-sensitive adhesive (adhesive residue) is recognized on the stainless steel plate on the adherend side, and the adhesive residue remains. Is determined as “×”, and an adhesive adhesion amount of 1.5 mm or more is recognized on the cutting blade of the cutter apparatus. Therefore, the measurement item of cutter durability is also determined as “×”.

  Furthermore, in order to prevent only the laminate film 13 from being peeled off when the printing tape 5 is peeled off from the adherend, the slow adhesive force of the second pressure-sensitive adhesive layer 33 to the PET film is low with respect to the PET film of the first pressure-sensitive adhesive layer 32. It is desirable that the adhesive force is not more than a slight adhesive force. This relationship is that an acid-free adhesive is used for the second adhesive forming the second adhesive layer 33, while an acid-free adhesive is used for the first adhesive forming the first adhesive layer 32. It can be easily created by using an agent.

  As described above in detail, in the printing cassette 1 of the present embodiment, as shown in FIGS. 3 and 4, the laminate film 13 and the double-sided tape 11 are wound, and further shown in FIG. As described above, the laminate film 13 is attached to the first pressure-sensitive adhesive layer 32 applied to the one surface side of the base film 31 of the double-sided tape 11 so that the printing tape 5 is obtained. The printing tape 5 can be attached to the adherend by the second adhesive layer 33 exposed by peeling the release paper 34 of the double-sided tape 11. Since the second adhesive layer 33 facing is formed of an acid-free second adhesive (not containing unsaturated carboxylic acid), the printing tape 5 is attached to an adherend such as a photograph or a copper plate. Even if it sticks, the sticking surface of a to-be-adhered body does not corrode.

  In addition, since the upper and lower sides of the first pressure-sensitive adhesive layer 32 are covered with the PET laminate film 13 and the PET base film 31, even if the first pressure-sensitive adhesive layer 32 is formed with a non-acid-free pressure-sensitive adhesive. The acid component of the adhesive does not affect the adherend. Therefore, since the first pressure-sensitive adhesive forming the first pressure-sensitive adhesive layer 32 can use various types of pressure-sensitive adhesives, design restrictions are reduced, and the laminate film 13, the base film 31, It is also possible to use a pressure-sensitive adhesive that enhances the adhesiveness of the tape, which is useful for improving the quality of the printing tape 5.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a technique for preventing corrosion that a printing tape discharged from a printing cassette exerts on an adherend.

It is sectional drawing at the time of cut | disconnecting the tape for printing by the line AA of FIG. It is a perspective view of a cassette for printing. It is a top view of the cassette for printing shown except an upper cassette case. It is the figure which showed the outline | summary of the process in which a double-sided tape, a laminate film, and an ink ribbon are guided on a lower cassette case. It is the figure which showed the measurement principle of the quick adhesive force with respect to PET film by the measuring machine of Shimadzu Corporation "Autograph AGS-50ND". It is the figure which showed typically the measuring method of the protrusion width. It is the table | surface which showed each measurement result about the tape for printing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Printing cassette 5 Printing tape 11 Double-sided tape 13 Laminated film 31 Base film 32 1st adhesive layer 33 2nd adhesive layer 34 Release paper

Claims (3)

A printing cassette in which a laminate film and a double-sided tape constituting a printing tape are wound,
The double-sided tape is
A base film,
A first pressure-sensitive adhesive layer that is applied to one side of the base film and formed of a first pressure-sensitive adhesive for attaching the laminate film;
Release paper affixed to the other side of the base film;
A second adhesive layer applied between the base film and the release paper and formed of a second adhesive,
The second adhesive is acid free;
A cassette for printing. A printing cassette according to claim 1,
The printing is characterized in that the value of the slow adhesive force of the second adhesive to the PET film is in the range of 1 to 10 N / 20 mm and is equal to or less than the value of the slow adhesive force of the first adhesive to the PET film. Cassette. A printing cassette according to claim 1,
The printing cassette, wherein the coating thickness of the second pressure-sensitive adhesive layer is in the range of 10 to 50 μm.

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