JP6330192B2 - Film transfer tool - Google Patents

Description

The present invention relates to a coating film transfer tool used for transferring an adhesive pressure-sensitive adhesive coating film of a paste transfer tape provided with an adhesive pressure-sensitive adhesive coating film on a base tape to a transfer surface.

Conventionally, a coating film transfer tool for a glue transfer tape for transferring an adhesive adhesive coating film has been used together with a coating film transfer tool for a correction tape for transferring a correction coating film for correcting an error from a transfer tape. . In the present invention, the transfer tape provided with the adhesive pressure-sensitive adhesive coating film is expressed as a glue transfer tape for convenience, but the transfer tape coating film provided with the adhesive pressure-sensitive adhesive coating film of the present invention, As long as it is an adhesive pressure-sensitive adhesive coating film that can be transferred with a coating film transfer tool, it is not limited to glue.

JP2009-297909A Japanese Patent Application No. 2013-225839

For example, Patent Document 1 discloses a coating film transfer tool for glue transfer tape that transfers an adhesive pressure-sensitive adhesive coating film. Since the correction tape coating film transfer tool is used for correcting errors, there are cases where only one character is corrected, and the amount of use per one time is small. For this reason, since the consumer purchases the correction tape coating film transfer tool, the correction tape coating film transfer tool is generally not used for a long period of time. On the other hand, the coating film transfer tool for glue transfer tape is used for attaching an object to be attached such as a photograph or a newspaper cutout to a report sheet or a notebook. For example, when pasting a photograph of L size (8.9 cm × 12.7 cm), if glue is applied to all four sides of the photograph as shown in FIG. 3, it is necessary to transfer the glue over a length of about 43 cm. is there. For this reason, for example, when an L-size photo is pasted using a coating film transfer tool for glue transfer tape having a length of 6 m of the applied adhesive pressure-sensitive adhesive coating film, 43 cm × 14 sheets = 602 cm Therefore, the pasting of the glue transfer tape of the coating film transfer tool was completed only by pasting 14 photos. Thus, the adhesive pressure-sensitive adhesive coating film of the coating film transfer tool for glue transfer tape may be lost immediately after the consumer purchases the coating film transfer tool. Therefore, the film transfer tool for glue transfer tape is more expensive for consumers than the film transfer tool for correction tape. Therefore, the coating film transfer tool for glue transfer tape is not accepted by many consumers as compared with the coating film transfer tool for correction tape, and the market scale is small. When sticking the said photograph to a notebook, the usage-amount of the adhesive adhesive coating film for adhesion can be reduced and a coating-film transcription | transfer tool can be made lasting long by transferring glue in the shape of a perforation as shown in FIG. Moreover, it is not necessary to transfer the adhesive adhesive coating film continuously to the entire outer periphery of the photo as long as the photo is pasted on a notebook, and the perforated adhesive adhesive coating film is transferred to the entire outer periphery. Just get enough adhesion to glue the photos. However, in order to transfer such a perforated adhesive pressure-sensitive adhesive coating film, it is necessary for the user to repeatedly perform fine transfer operations one by one, which requires work time and is very troublesome. In addition, if the glue transfer tape is stored in a long length, more objects can be attached, but if a long glue transfer tape is stored, the film transfer tool becomes larger and difficult to hold by hand. There is also the problem of high prices.

In order to solve such a conventional problem, a paste transfer tape in which an adhesive pressure-sensitive adhesive coating film is continuously applied to the surface of the tape is used, and the user continuously transfers the coating film. In addition, with the transfer head of the coating film transfer tool pressed against the transfer surface such as paper, the glue is intermittently transferred onto the transfer surface in a perforated form simply by moving the coating film transfer tool on the transfer surface. A coating film transfer tool to be used is proposed in Patent Document 2. In the coating film transfer tool of Patent Document 2, as a method for intermittently transferring a coating film, a transfer roller is used for the transfer head, and a recess having a width wider than the width of the glue transfer tape is provided on a part of the outer periphery of the transfer roller. ing. In the coating film transfer tool of Patent Document 2, when the transfer roller rotates during coating film transfer and the recess comes to a position facing the surface to be transferred, the transfer tape is in the recess. Does not touch the transfer surface. That is, since the adhesive pressure-sensitive adhesive coating film does not contact the surface to be transferred, in this state, the adhesive pressure-sensitive adhesive coating film is not transferred to the surface to be transferred, and the transfer tape is transferred even if the transfer roller rotates. It does not rotate with the roller, but is stopped. On the other hand, even if the concave portion comes to a position facing the surface to be transferred, both sides of the concave portion are in contact with the surface to be transferred, so that the transfer roller rotates due to frictional force with the surface to be transferred. When the transfer roller rotates and a position other than the concave portion is opposed to the surface to be transferred, the adhesive pressure-sensitive adhesive coating film on the transfer tape is pressed against the surface to be transferred by the transfer roller. As the film is transferred to the transfer surface, the transfer tape runs. Further, when the transfer roller rotates and the concave portion comes to a position facing the transfer surface again, the adhesive pressure-sensitive adhesive coating film is not transferred to the transfer surface and the transfer tape is stopped. Thus, in the coating film transfer tool of patent document 2, the adhesive pressure-sensitive adhesive coating film on the transfer tape is intermittently transferred in the form of a perforation.

In the case of glue transfer tape, the feeding side pancake with the glue transfer tape wound around the feeding core is placed closer to the transfer head, and the transferred base tape is brought into contact with the outer periphery of the feeding side pancake to transfer. Using the adhesive force between the back surface of the base tape and the glue surface on the outer periphery of the pancake, the base tape after transfer is assisted to ensure stable running so that there is no poor winding of the base tape. It is preferable. In particular, when the glue at the end of the glue transfer tape adheres to the inner wall of the coating film transfer tool near the transfer head, and the glue that has adhered becomes resistance to running of the glue transfer tape, the back of the base tape after transfer and the periphery of the pancake If the adhesive force with the glue surface is not used, the substrate tape after transfer may not be wound around the winding core. Even in the coating film transfer tool of Patent Document 2, in order to ensure winding of the base tape after transfer, the base tape after transfer is brought into contact with the outer peripheral portion of the feeding pancake.

However, in the coating film transfer tool of Patent Document 2, if the base tape after transfer is brought into contact with the outer periphery of the feeding pancake in order to ensure the winding of the tape, the transfer tape becomes slack when the coating film is transferred. There is a problem that the transfer tape is liable to run poorly due to the above, and a lump of the coating film is generated at the end of the transferred coating film. In the coating film transfer tool of Patent Document 2, since the recess is provided in the outer peripheral portion of the transfer roller that contacts the transfer tape, the outer diameter of the transfer roller that contacts the transfer tape changes in a non-constant manner as the transfer roller rotates. To do. On the other hand, the tape route from the feeding side pancake until it comes into contact with the outer periphery of the transfer roller and again comes into contact with the outer circumference of the feeding side pancake is gradually shortened due to the decrease in the outer diameter of the feeding side pancake, It hardly changes during one rotation of the transfer roller. Therefore, when there is a portion other than the concave portion of the transfer roller at a position in contact with the transfer tape, the transfer tape on the tape route from the feeding-side pancake until the contact with the outer peripheral portion of the feeding-side pancake is stretched. On the other hand, when there is a concave portion of the transfer roller at a position in contact with the transfer tape, the transfer tape on the tape route is loosened. In this way, since the transfer tape is repeatedly stretched and loosened alternately, the transfer tape becomes unstable and the transfer tape is likely to meander. In addition, the end of each perforation of the adhesive pressure-sensitive adhesive coating film intermittently transferred in the form of perforations is the transferred adhesive pressure-sensitive adhesive coating film and the adhesive pressure-sensitive adhesive coating film remaining on the transfer tape. By tearing off. In the coating film transfer tool of Patent Document 2, since this cutting is performed in a state where the transfer tape is loosened and the tension of the transfer tape is reduced, the transferred adhesive pressure-sensitive adhesive coating film and the adhesive tape remaining on the transfer tape are used. The adhesive adhesive coating is stretched when it is torn off, and the adhesive adhesive coating that is stretched when torn is pulled back to the transfer surface and transferred onto the transfer surface. A lump of adhesive pressure-sensitive adhesive coating film is generated at the end of the coated film.

The present invention has been made in view of the problems of the conventional coating film transfer tool as described above, and the problem to be solved by the present invention is that the adhesive pressure-sensitive adhesive is used even if the user does not perform extra work. In the film transfer tool that can intermittently transfer the coating film in the form of perforations, both prevention of poor winding of the base tape after transfer of the adhesive adhesive coating film and prevention of change in tension of the transfer tape It is providing the coating-film transfer tool for glue transfer tapes which can do.

The first invention is a coating film transfer tool for transferring the adhesive pressure-sensitive adhesive coating film of a glue transfer tape provided with an adhesive pressure-sensitive adhesive coating film on a base tape to the transfer surface, the glue transfer tape , A transfer pressing portion that presses the adhesive transfer tape against the transfer surface and transfers the adhesive adhesive coating film onto the transfer surface, and winds up the base tape after transfer The winding unit is housed in a housing, the transfer pressing unit is a transfer roller rotatably provided on the housing or a transfer roller holder held in the housing, and the glue transfer tape is the feeding unit After coming out of the pancake and contacting the outer periphery of the transfer roller, it again comes into contact with the outer peripheral portion of the pancake of the feeding portion, with a gap wider than the width of the glue transfer tape in a part of the outer periphery of the transfer roller, Convex parts on both sides of the rotation axis direction of the transfer roller When the transfer roller is pressed against the surface to be transferred with the convex portion of the transfer roller facing the surface to be transferred, the convex portion comes into contact with the surface to be transferred, so that the glue transfer tape is covered. The coating film transfer tool is characterized in that it is not in contact with a transfer surface and the convex portion is provided not on the entire circumference of the transfer roller but on a part of the outer circumference of the transfer roller .

A second invention is the coating film transfer tool according to the first invention, wherein the convex portions having the same shape are provided at equal angular intervals on the outer periphery of the transfer roller.

According to a third aspect of the present invention, the difference between the interval between the convex portions provided on both sides of the transfer roller in the rotation axis direction and the width of the glue transfer tape is 0.3 mm or more and 1.3 mm or less. Or it is a coating-film transfer tool as described in 2nd invention.

The convex portion of the transfer roller is opposed to the surface to be transferred by providing a convex portion on both sides in the rotation axis direction of the transfer roller with a gap wider than the width of the glue transfer tape on a part of the outer periphery of the transfer roller. When the transfer roller is pressed against the transfer surface in this state, the convex portion comes into contact with the transfer surface and the adhesive pressure-sensitive adhesive coating film does not come into contact with the transfer surface. As a result, the adhesive pressure-sensitive adhesive coating film can be intermittently transferred in the form of a perforation without the user performing extra work. Moreover, since the outer diameter of the transfer roller in contact with the transfer tape can be made constant, the base tape after transfer is used to prevent the winding failure of the base tape after transfer of the adhesive adhesive coating film. Even with a coating film transfer tool for glue transfer tape brought into contact with the outer peripheral portion of the feeding side pancake, the tension of the transfer tape does not change. As a result, it is possible to achieve both prevention of poor winding of the base tape after transfer of the adhesive pressure-sensitive adhesive coating film and prevention of change in tension of the transfer tape. In addition, since the change in tension of the transfer tape can be prevented, the end of each perforation of the adhesive pressure-sensitive adhesive coating film that is intermittently transferred in a perforation pattern is good, and the mass of the coating film on the surface to be transferred Occurrence can be reduced.

Coating film transfer tool A having the transfer roller 7 of the embodiment of the present invention Coating film transfer tool B described in Patent Document 2 It is a figure which shows the state glued on all four sides of the photograph of L plate size (8.9cm x 12.7cm). It is a figure which shows the state pasted on the four sides of the photograph of L plate size (8.9cm x 12.7cm) in the shape of perforation. It is a figure which shows the state which transcribe | transferred the adhesive adhesive coating film for adhesion using the coating-film transfer tool of this invention.

A coating film transfer tool A having a transfer roller 7 according to an embodiment of the present invention is shown in FIG. FIG. 1A is a front view of the coating film transfer tool A with the cover removed, and FIG. 1B is a bottom view of the coating film transfer tool A with the cover set. FIG. 1C is a view showing the transfer roller 7 alone, and FIG. 1D is a cross-sectional view taken along line MM in FIG. 1C.

As shown in FIG. 1, the coating film transfer tool A has a casing composed of a case 1 and a cover 2, and a feeding side on which a glue transfer tape T coated with an adhesive pressure-sensitive adhesive coating film is wound around a feeding core 3. A transfer head composed of a pancake, a transfer roller 7 for transferring the adhesive pressure-sensitive adhesive coating film onto a transfer surface such as paper, and a transfer roller holder 4 for rotatably holding the transfer roller 7, an adhesive pressure-sensitive adhesive coating film Although it is comprised from the winding core 5 which winds up base material tape T1 after transcription | transfer, and O-ring 6 which transmits rotation of the feeding core 3 to the winding core 5, it is not limited to this And a take-up portion for taking up the remaining base tape to which the adhesive pressure-sensitive adhesive coating film has been transferred, and the paste transfer tape T from the pancake (feed-out portion) on the delivery side. After feeding out and contacting the outer periphery of the transfer roller, the feeding unit It has a tape route in contact with the outer circumference of, and may be in the form of transferring the adhesive pressure-sensitive adhesive coating from glue transfer tape by the transfer roller.

In the coating film transfer tool A, the transfer roller 7 is rotatably held by the transfer roller holder 4 held by the case 1 and the cover 2, but the case 1 and the cover 2 are not directly passed through the transfer roller holder 4. Alternatively, the transfer roller 7 may be rotatably held.

As materials for the transfer roller 7, plastics such as polypropylene, polyethylene, polyacetal, and ABS can be used, but natural rubber, synthetic rubber, or these can be used as long as they can withstand the pressing force during coating film transfer. It is preferable to use rubber which is a mixture containing. In the transfer roller 7, it is more preferable that the central shaft portion is made of plastic and only the outer peripheral portion is made of rubber. By manufacturing the central shaft of the transfer roller 7 from a plastic material, it is possible to easily impart strength sufficient to withstand the pressing force during coating film transfer. Further, the outer peripheral portion of the transfer roller 7 that contacts the transfer surface is made of rubber, so that the friction coefficient between the transfer roller 7 and the transfer surface increases, and the transfer roller 7 is pressed against the transfer surface. When the roller 7 is moved, the transfer roller 7 rotates on the transfer surface without sliding with respect to the transfer surface.

Examples of the rubber material of the transfer roller 7 include natural rubber, silicone rubber, ethylene propylene rubber, acrylonitrile butadiene rubber, styrene butadiene rubber, chloroprene rubber, acrylic rubber, fluorine rubber, polyurethane rubber, and thermoplastic elastomer.

As shown in FIG. 1C and FIG. 1D, two convex portions 71 are provided at both ends of the outer periphery of the transfer roller 7 in the width direction with an interval slightly wider than the width of the glue transfer tape T. Is provided. The interval H1 between the convex portions 71 is preferably larger than the width of the glue transfer tape T in the range of 0.3 mm to 1.3 mm, and more preferably in the range of 0.3 mm to 0.8 mm. preferable. Since the interval H1 between the convex portions 71 is larger than the width of the glue transfer tape T, the glue transfer tape T passes between the convex portions 71 at the locations where the convex portions 71 are present on the outer periphery of the transfer roller 7. The movement of the transfer roller 7 in the rotation axis direction is restricted by the convex portion 71, and the glue transfer tape T becomes difficult to meander on the transfer roller 7. If the difference between the interval H1 between the convex portions 71 and the width of the glue transfer tape T is smaller than 0.3 mm, it is difficult to mount the glue transfer tape T between the convex portions 71. When the difference between the interval H1 between the convex portions 71 and the width of the glue transfer tape T exceeds 1.3 mm, the effect of preventing the meandering of the glue transfer tape T is reduced. The convex portion 71 is provided not on the entire outer periphery but on a portion of the outer periphery. The place where the convex portion 71 is provided may be one place or two or more places on the circumference, but when two or more places are provided, it is preferable to provide the same size and the same shape at equal angular intervals. By providing convex portions of the same size and shape at equal angular intervals, and using the coating film transfer tool of the present invention to transfer the adhesive pressure-sensitive adhesive coating film, the same length adhesive pressure-sensitive adhesive coating film Are transferred in the form of perforations at regular intervals. In the state where the convex portion 71 faces the transfer surface, even if the transfer roller 7 is pressed against the transfer surface, the adhesive pressure-sensitive adhesive coating film on the glue transfer tape T between the convex portions 71 is in contact with the transfer surface. do not do. In the coating film transfer tool A, as shown in FIG.1 (d), the cross-sectional shape of the convex part 71 is the circular arc shape which protrudes to an outer peripheral side. The cross-sectional shape of the convex portion 71 is not particularly limited, but the shape shown in FIG. 1D is preferable for the transfer roller 7 to smoothly rotate with respect to the transfer surface.

When the transfer roller 7 is pressed against the transfer surface so that the portion without the convex portion 71 of the transfer roller 7 faces the transfer surface, the glue transfer tape T on the transfer roller 7 comes into contact with the transfer surface. When the coating film transfer tool moves on the transfer surface in this state, the adhesive pressure-sensitive adhesive coating film is transferred from the glue transfer tape T to the transfer surface, and the glue transfer tape T is rotated along with the rotation of the transfer roller 7. It is fed out from the feeding core 3. On the other hand, even if the transfer roller 7 is pressed against the transfer surface so that the convex portion 71 of the transfer roller 7 faces the transfer surface, the glue transfer tape T on the transfer roller 7 does not contact the transfer surface. Even if the coating film transfer tool A moves on the transfer surface in this state, the adhesive pressure-sensitive adhesive coating film is not transferred from the paste transfer tape T to the transfer surface, and the transfer of the glue is possible even if the transfer roller 7 rotates. The tape T is not fed from the feeding core 3.

At the position where the convex portion 71 of the transfer roller 7 faces the surface to be transferred, only the convex portion 71 comes into contact with the surface to be transferred, so that the transfer roller 7 rotates. Further, even when the portion where the convex portion 71 of the transfer roller 7 is not located is at a position facing the transfer surface, each transfer perforation of the intermittent transfer must be performed unless the transfer roller 7 rotates without sliding with respect to the transfer surface. The length is not uniform. Accordingly, the coefficient of friction with the transfer surface of the transfer roller 7 in the portion that directly contacts the transfer surface including the convex portion 71 is large enough to prevent the transfer roller 7 from rotating due to slipping with the transfer surface. Is preferred. In consideration of the coefficient of friction, it is preferable to use the rubber material described above for the surface in contact with the transfer surface. Similarly, the shape of the convex portion 71 increases the contact area with the transfer surface to the extent that the transfer roller 7 does not rotate when it is pressed against the transfer surface. The shape is preferred.

On the other hand, in the state where the convex portion 71 is at a position facing the transfer surface, it is necessary to prevent the transfer tape T from being fed out from the feeding core 3, so that the friction coefficient between the transfer roller 7 and the back surface of the transfer tape T is reached. Is preferably as small as possible.

As described above, the transfer roller 7 needs to reduce the coefficient of friction at the portion that contacts the back surface of the transfer tape, and needs to increase the friction coefficient at both ends that do not contact the back surface of the transfer tape. Therefore, it is more preferable that the center shaft of the transfer roller 7 is made of a plastic material having a relatively small friction coefficient, and only the outer peripheral portions at both ends not contacting the back surface of the transfer tape are made of rubber having a large friction coefficient.

When the coating film transfer tool A moves on the transfer surface with the transfer roller 7 of the coating film transfer tool A pressed against the transfer surface, the transfer roller 7 continuously rotates as the coating film transfer tool A moves. On the other hand, the glue transfer tape is intermittently drawn out from the core 3 and the adhesive adhesive coating film on the glue transfer tape is intermittently transferred to the transfer surface. As a result, when the coating film transfer tool A moves on the transfer surface with the transfer roller 7 of the coating film transfer tool A pressed against the transfer surface, the adhesive pressure-sensitive adhesive coating film is discontinuous on the transfer surface. (So-called perforations) are intermittently transferred. In addition, since the glue transfer tape T may not move intermittently with respect to the transfer roller A, the glue transfer tape is at a distance traveled by the coating film transfer tool A to transfer the adhesive adhesive coating film. The length by which T is fed from the feeding core 3 is shortened. For this reason, it is transferred from the adhesive transfer tape of the same length to the transfer surface compared to the length of the adhesive pressure-sensitive adhesive coating film continuously transferred from the transfer film transfer tool of the conventional transfer roller to the transfer surface. The length of the adhesive (perforated) pressure-sensitive adhesive coating film can be increased. As a result, in the coating film transfer tool A, the length of the glue transfer tape to be accommodated is not increased, and even if the user does not perform any special work, more photographs than the conventional coating film transfer tool. And pasting objects such as newspaper clippings can be pasted on report paper and notebooks.

In the coating film transfer tool A, the adhesive pressure-sensitive adhesive coating film is transferred in the form of a perforation. Therefore, when the same adhesive pressure-sensitive adhesive coating film is used, the adhesive pressure-sensitive adhesive coating film is transferred in a conventional continuous state. The adhesive force per unit area is reduced as compared with the coating film transfer tool. However, if a glue transfer tape using a so-called strong adhesive pressure-sensitive adhesive coating film is used, the adhesive pressure-sensitive adhesive coating film transferred in a perforated pattern by the coating film transfer tool A can also be used as a photograph. Adhesive strength can be obtained for pasting articles such as paper cutouts and newspapers on report paper and notebooks.

In the coating film transfer tool A, as a means for intermittently transferring the adhesive pressure-sensitive adhesive coating film, a pair of convex portions 71 are provided on the transfer roller 7 with a gap slightly wider than the width of the glue transfer tape T. ing. For this reason, the outer diameter of the transfer roller 7 in the part where the glue transfer tape T contacts can be made the same dimension over the entire circumference. Therefore, in the coating film transfer tool A, since there is no change in the tension of the glue transfer tape as in the coating film transfer tool disclosed in Patent Document 2, the transfer tape is difficult to meander and is intermittently transferred in the form of a perforation. The adhesive adhesive coating film has a good finish at the end of each perforation, and the generation of coating film lumps on the transfer surface can be reduced.

  In the paste transfer tape of the present invention, an organic polymer film support and a paper support are preferably used as a support to be a base tape. As the organic polymer film support, various film supports such as a polyester film, a polycarbonate film, a polymethyl methacrylate film, a polypropylene film, and a polyimide film can be used, but a polyester film is particularly preferable from the viewpoint of cost and performance. Moreover, the film thickness of a film support body has the preferable range of 6-50 micrometers from the surface of transferability and cost, More preferably, it is 12-25 micrometers. In addition, as the paper support, high-density paper such as glassine paper, laminated paper in which a resin film such as polyethylene is laminated on clay-coated paper, kraft paper, or high-quality paper can be used. From the viewpoint of performance, glassine paper is preferred. The thickness of the paper support is preferably in the range of 20 to 50 μm.

  In addition, these support bodies apply | coated the mold release agent, such as a silicone compound, a fluororesin, and a fluoro silicone resin, on the surface of both surfaces of a support body, and a sheet | seat (hereinafter, it may be called a release sheet) that both surfaces have peelability. It is preferable to use as

  The pressure-sensitive adhesive composition used for forming the pressure-sensitive adhesive layer in the adhesive transfer tape of the present invention is not particularly limited, and a general pressure-sensitive adhesive composition can be used, but an acrylic copolymer and a crosslinking agent are used. As an essential component, if necessary, a compound containing a tackifier resin can be suitably used.

  As the acrylic copolymer, one or more of (meth) acrylic acid alkyl ester having 4 to 18 carbon atoms in the alkyl group and another monomer having an ethylenically unsaturated bond capable of copolymerization are used. A copolymer with 1 type (s) or 2 or more types is mentioned.

  Examples of the (meth) acrylic acid alkyl ester include n-butyl (meth) acrylate, isobutyl (meth) acrylate, hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, n-octyl (meth) acrylate, and isooctyl. (Meth) acrylate, isononyl (meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate, etc. are mentioned.

  Examples of the monomer having a copolymerizable ethylenically unsaturated bond include acrylonitrile, methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, isopropyl (meth) acrylate, cyclohexyl (meth) acrylate, Styrene, α-methylstyrene, vinyl acetate, N-vinyl-2-pyrrolidone, benzyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, acrylic acid, methacrylic acid, itacon An acid, fumaric acid, etc. are mentioned. In the production of the acrylic copolymer, a monomer having a functional group capable of reacting with a crosslinking agent described later (for example, a monomer having a carboxyl group) is used as an essential component as a monomer having a copolymerizable ethylenically unsaturated bond. To do.

  As tackifying resins, rosin, rosin phenol resins, and rosin resins such as ester compounds and metal salts thereof, terpene polymers, terpene phenol resins, terpene resins such as aromatic modified terpene resins, styrene resins, Coumarone-indene resin, alkylphenol resin, xylene resin, C5 petroleum resin, C9 petroleum resin, alicyclic hydrogenated resin, etc. are mentioned. When used by blending with a polymer, natural resin-based rosin resins and terpene resins exhibiting good adhesion and initial tackiness to adherends such as paper and various films are preferably used.

  In the pressure-sensitive adhesive composition of the present invention, examples of the crosslinking agent used for crosslinking the acrylic copolymer include hexamethylene diisocyanate, xylylene diisocyanate, tolylene diisocyanate, 2-chloro-1,4- Diisocyanate compounds such as phenyl diisocyanate, trimethylhexamethylene diisocyanate, 1,5-naphthalene diisocyanate, isophorone diisocyanate, biuret-type trimers of these diisocyanate compounds, isocyanurate-type trimers, isocyanate-based crosslinking agents such as triisocyanate, epoxy-based Examples thereof include a cross-linking agent, a melamine-based cross-linking agent, a metal chelate-based cross-linking agent, and an adduct of a polyol such as trimethylol propane, which can be appropriately selected and used.

  In the pressure-sensitive adhesive composition, an inorganic or organic colorant may be added within a range that does not impair adhesiveness, tackiness, film breakage, etc., and the adhesive layer may be colored.

  The thickness of the pressure-sensitive adhesive layer is preferably in the range of 5 to 35 μm, more preferably in the range of 10 to 25 μm, in consideration of the adhesive force to the paper surface, the holding power, and the film breakability. The pressure-sensitive adhesive layer can be formed by applying the pressure-sensitive adhesive composition using, for example, a bar coater, roll coater, gravure coater, knife coater, die coater, comma coater, lip coater or the like.

  Next, the present invention will be described in more detail based on examples, but the present invention is not limited thereto. In the following, “parts” means parts by weight, and the coating amount, the number of parts, the mixing ratio, etc. are all expressed in terms of solid content.

(Manufacture of release sheet)
93 parts of silicone release agent (“KS-3601” manufactured by Shin-Etsu Chemical Co., Ltd.) and 5 parts of cross-linking agent (“cat.PL-50T” manufactured by Shin-Etsu Chemical Co., Ltd.) on one side of a 12 μm thick polyethylene film And a mixture of 2 parts of silica powder (“Nippal E220A” manufactured by Nippon Silica Kogyo Co., Ltd.) are coated with a gravure coater so that the dry weight is 0.4 g / m ² and dried with hot air to form a heavy release surface. Then, 95 parts of a silicone release agent (“KS-3650” manufactured by Shin-Etsu Chemical Co., Ltd.) and a crosslinking agent (“cat.PL-50T” manufactured by Shin-Etsu Chemical Co., Ltd.) 5 are provided on the other surface of the polyethylene film. Part of the mixture was coated with a gravure coater so that the dry weight was 0.4 g / m ² , dried with hot air to form a light release surface, and a release sheet was obtained.

(Manufacture of adhesive composition)
First, 98 parts of an acrylic adhesive (“SK Dyne 801B” manufactured by Soken Chemical Co., Ltd., containing an acrylic copolymer and a tackifier resin) and a crosslinking agent (“Curing Agent L-” manufactured by Soken Chemical Co., Ltd.) 45 ") 2 parts were mixed to obtain a base acrylic pressure-sensitive adhesive composition.

(Manufacture of glue transfer tape)
Apply the pressure-sensitive adhesive composition on the light release surface of the release sheet with a comma coater to a thickness of 20 μm (when dry), dry at 100 ° C. for 3 minutes, and then bond to the heavy release surface side. In order to accommodate the roll in a coating film transfer tool, it was slit to a width of 6 mm and wound around a feeding core to obtain a pancake of an adhesive transfer tape.

For the paste transfer tape having a tape width of 6 mm, a transfer roller 7 and a transfer roller 7B having the shapes shown in FIG. 1 and FIG. The same parts were used except for the transfer roller, and the coating film transfer tool of Example 1 with the transfer roller 7 attached and the coating film transfer tool of Comparative Example 1 with the transfer roller 7B attached were prepared. A transfer test was carried out using a glue transfer tape in which an adhesive pressure-sensitive adhesive coating film was applied over a length of 6 m on a base tape to each coating film transfer tool. Both of the transfer rollers 7 and 7B use a polyacetal shaft having an outer diameter of 3 mm as a central shaft, and the outer peripheral shape has an A hardness of 75 in JIS (K6253) in which 5 parts of a polypropylene resin is blended with 95 parts of a styrene thermoplastic elastomer. It was manufactured using a thermoplastic elastomer of a degree. When measuring the width dimension of the glue transfer tape used for each coating film transfer tool, the interval between the convex portions 71 of each roller, and the width dimension of the concave portion 71B using a Nikon Corporation measuring microscope MM-800, The measurement results were as follows. The width of the glue transfer tape used for the coating film transfer tool of Example 1 was 6.00 mm. The width of the glue transfer tape used for the coating film transfer tool of Comparative Example 1 was 5.99 mm. The distance H1 between the convex portions 71 of the transfer roller 7 of Example 1 was 6.50 mm and 6.41 mm. The width H2 of the recess 71B of the transfer roller 7B of Comparative Example 1 was 6.63 mm and 6.48 mm.

The adhesive pressure-sensitive adhesive coating film was transferred at a transfer speed of 5 cm / sec using a PPC paper as the transfer surface, a pressing force for pressing the transfer roller against the PPC paper at 5.0 N, and a transfer speed for moving the coating film transfer tool.

Using the coating film transfer tool of Example 1 and Comparative Example 1 with the adhesive coating film for adhesion of about 6 m still remaining on the pancake of the feeding core 3, the coating film transfer test was carried out and transferred. The length of each one of the perforated coating films and the interval between the perforated coating films were measured. Specifically, the transfer length (transfer length in FIG. 5) of nine continuous perforated adhesive coating films and the nine perforated adhesive adhesive coatings. Eight gaps between the films (interval length in FIG. 5) were measured with a metal scale having a minimum scale of 1.0 mm. With respect to the transferred nine perforated coating film ends, the presence or absence of coating film lumps was visually confirmed. The base tape of the part used for the nine perforations was confirmed, and the presence or absence of an adhesive pressure-sensitive adhesive coating film (adhesive residue) remaining without being transferred to the base tape was visually confirmed. Also, continuous transfer from the start of transfer until the adhesive pressure-sensitive adhesive coating film on the glue transfer tape has been transferred, during which the transfer roller moved to transfer the adhesive pressure-sensitive adhesive coating film, that is, transferred. The total length of the perforated coating film was measured. The results are shown in Table 2.

A: Coating film transfer tool
T: Adhesive transfer tape T1: Base tape 1: Case
2: Cover 3: Feeding core 4: Transfer roller holder 5: Winding core 6: O-ring
7, 7B: transfer roller 71: convex portion 71B: concave portion

Claims (3)

A coating film transfer tool for transferring the adhesive pressure-sensitive adhesive coating film of a paste transfer tape provided with an adhesive pressure-sensitive adhesive coating film on a base tape to a surface to be transferred, and a feeding unit for feeding out the glue transfer tape A transfer pressing unit that presses the adhesive transfer tape against the transfer surface and transfers the adhesive pressure-sensitive adhesive coating film onto the transfer surface, and a winding unit that winds the base tape after transfer. The transfer pressing part is a transfer roller rotatably provided on the casing or a transfer roller holder held in the casing, and the glue transfer tape is fed from the pancake of the feeding part. After the contact with the outer periphery of the transfer roller, the contact with the outer peripheral portion of the pancake of the feeding portion again, and a part of the outer periphery of the transfer roller having a gap wider than the width of the glue transfer tape, the rotation of the transfer roller Protrusions are provided on both sides in the axial direction, and the front Contact When pressing the transfer roller to a transfer surface in a state where the convex portion of the transfer roller is opposed to the transferred surface by the convex portion is in contact with the transferred surface, the glue transfer tape with the transferred surface The coating film transfer tool is characterized in that the convex portion is provided not on the entire outer periphery of the transfer roller but on a part of the outer periphery of the transfer roller . The coating film transfer tool according to claim 1, wherein the convex portions having the same shape are provided on the outer periphery of the transfer roller at equal angular intervals. The difference between the interval between the convex portions provided on both sides of the rotation axis direction of the transfer roller and the width of the glue transfer tape is 0.3 mm or more and 1.3 mm or less. Coating film transfer tool.

Images