JP2015194591A - adhesive tape roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printed adhesive tape capable of preventing an adverse effect on a printing content when fed from a printed adhesive tape roll, improving releasability when fed from an adhesive tape roll to be printed and maintaining antifouling properties when used to be stuck.SOLUTION: A printed adhesive tape roll R2 is formed by winding a printed adhesive tape 150" having a tape body and a printed layer 155 formed by an ink jet head 10a around a predetermined shaft core O2. The tape body comprises: a base material layer 153; an adhesive layer 152 provided on one side of the base material layer 153 in the thickness direction; and a release agent layer 154 provided on the other side of the base material layer 153 in the thickness direction. The release agent layer 154 is constituted of a release agent obtained by mixing an olefine resin based release agent or an acrylic resin based release agent having a long chain alkyl group with two or more kinds of polymerization components having different degrees of polymerization.

Description

  The present invention relates to a (printed) adhesive tape roll using a printed adhesive tape that can be used by being attached to an adherend.

  2. Description of the Related Art A printing apparatus that performs printing with ink on a printing target is known (for example, see Patent Document 1). In this prior art, after the ink is ejected from the ink print head and then the post-treatment liquid is ejected from the overcoat head to the paper-like recording medium sequentially put into the tray, the ink Layer protection (overcoating) is performed.

International Publication No. WO2003 / 043825

  On the other hand, printing apparatuses that perform printing on adhesive tapes are being proposed. In this printing apparatus, for example, ink is ejected from the head onto the print-receiving adhesive tape that is fed out and conveyed from the print-receiving adhesive tape roll, and an ink layer is formed on the tape base layer of the print-receiving adhesive tape. Thus, a printed adhesive tape is generated. The generated printed adhesive tape is again wound up into a roll to form an (printed) adhesive tape roll. The user can use the adhesive tape roll by printing out the adhesive tape with a desired length from the adhesive tape roll and sticking it to an appropriate adherend with the adhesive layer provided on the back surface of the tape base layer. it can.

  As described above, when a user sticks an adhesive tape and uses it, dirt or dust may adhere to the surface, and in order to prevent this, it is considered to provide a release layer on the surface of the tape base layer. It is done. In this case, since the printed adhesive tape includes the above-described ink layer, release layer, tape base layer, and adhesive layer in this order, in the (printed) adhesive tape roll, The pressure-sensitive adhesive layer comes into contact with the roll in the radial direction. As a result, as described above, when the user pulls out the printed adhesive tape from the adhesive tape roll and uses it, the ink layer is peeled off to the adhesive layer side, which may adversely affect the printed content.

  In addition, since the print-receiving pressure-sensitive adhesive tape has the above-described laminated structure, in the print-ready pressure-sensitive adhesive tape roll, the release layer is in contact with and sticking to the pressure-sensitive adhesive layer. As described above, when the printing adhesive tape is fed out from the adhesive tape roll, the adhesive layer is peeled off and peeled from the release layer in order, so that consideration for improving the peelability is also necessary. .

  Due to various restrictions as described above, it is difficult to select a release agent that constitutes the release layer, and as a result, it is possible to prevent adverse effects on the printing contents when the above-mentioned printed adhesive tape roll is fed out, and to be printed adhesive tape roll. It was difficult to satisfy all of the improvement in peelability during unwinding and the securing of antifouling properties during use.

  In the prior art described above, no consideration has been given to the realization of optimum characteristics that can prevent the adverse effects on the print contents as described above, improve the peelability, and maintain the antifouling property.

  The purpose of the present invention is to prevent adverse effects on the printed contents when fed out from the printed adhesive tape roll, improve the peelability when fed out from the printed adhesive tape roll, and when used after being attached. It is providing the adhesive tape roll which can maintain antifouling property.

  In order to achieve the above object, the present invention is a pressure-sensitive adhesive tape that has a dimension in the thickness direction and has a tape body and a print layer formed on the tape body by ejection from an inkjet head, The tape body includes a tape base layer, an adhesive layer provided on one side of the tape base layer in the thickness direction and configured by a predetermined adhesive, and the tape base layer in the thickness direction. A release layer provided on the other side, wherein the release layer is an olefin resin release agent or an acrylic resin release agent having a long-chain alkyl group, and having a different degree of polymerization The print layer is formed on the other side of the release layer, and the printed adhesive tape is formed on the outer peripheral side of the print layer. axis Characterized in that it is formed by winding around.

  The printed adhesive tape wound around the adhesive tape roll of the present invention is configured by forming a printing layer on the tape body by discharging from an inkjet head. That is, in the present invention, for example, a printed layer is formed on a tape body (printed adhesive tape) having a predetermined laminated structure that is fed from a printed adhesive tape roll to form the printed adhesive tape. Is wound to produce the above-mentioned (printed) adhesive tape roll. Thereafter, the user feeds out the printed adhesive tape having a desired length from the (printed) adhesive tape roll and affixes it to an appropriate adherend, for example, as a label or a sealing material for packing. use. At this time, the said tape main body contains a peeling layer, a tape base material layer, and an adhesion layer in this order from the other side (for example, upper side) of thickness direction toward one side (for example, lower side), for example. By providing a release layer on the other side of the tape base layer, when used as a label or sealing material as described above, it becomes difficult for dirt and dust to adhere to the surface, thus maintaining antifouling properties. be able to.

  In the present invention, the printed adhesive tape is produced as a roll wound around a predetermined axis. As described above, since the tape body of the printed adhesive tape includes the release layer, the tape base layer, and the adhesive layer in this order, in the above-mentioned (printed) adhesive tape roll of the present invention, the printed layer is In the formed part, the other side (for example, upper side) surface of the printing layer and the adhesive layer are in contact with each other in the radial direction of the roll. At this time, if the adhesiveness between the print layer and the release layer is small, when the printed adhesive tape is unwound from the roll and used, the print layer formed on the release layer is peeled off again to the adhesive layer side. There is a risk of adversely affecting printing.

  Therefore, in the present invention, the release layer is composed of an olefin resin release agent or an acrylic resin release agent having a long chain alkyl group, and a release agent in which a plurality of types of polymerization components having different degrees of polymerization are mixed. To do. In the release layer constituted by such a release agent, a large number of microscopic gaps in which the ink particles constituting the print layer can enter are formed between the molecules constituting the release layer. Therefore, the printing layer formed by the ink ejected from the inkjet head as described above can be firmly adhered to the release layer of the tape body. Thereby, peeling of the print layer as described above can be prevented. As a result, it is possible to prevent the print layer from being peeled off to the adjacent adhesive layer side in the roll when the user uses the adhesive tape roll (printed) at the time of use.

  Furthermore, as described above, the tape main body has the release layer, the tape base layer, and the adhesive layer in this order from the other side (for example, the upper side) in the thickness direction toward the one side (for example, the lower side). It is a laminated structure including. Therefore, in the above-mentioned pressure-sensitive adhesive tape roll to be printed, the above-mentioned adhesive layer is in a state of being in contact with the release layer in the radial direction of the roll. The release layer is also provided for the purpose of facilitating the re-peeling of the adhesive with the adhesive layer, and when the printable adhesive tape is fed out from the printable adhesive tape roll as described above, the adhesive layer is The release layer made of an appropriate release agent is sequentially peeled off. Thereby, the peelability from the peeling layer when the printing adhesive tape from the printing adhesive tape roll is fed out can be improved.

  As described above, in the present invention, while improving the peelability of the printed adhesive tape at the time of feeding from the printed adhesive tape roll, the adverse effect on the printed contents at the time of feeding from the (printed) adhesive tape roll. In addition, it is possible to realize a printed adhesive tape having optimum characteristics that can prevent contamination and maintain antifouling properties when a printed adhesive tape is attached and used.

  According to the present invention, when printing from the printed adhesive tape roll is prevented, the printed content is prevented from being adversely affected. In addition, when the tape is fed from the print-targeted adhesive tape roll, the peelability is improved. Antifouling property can be maintained.

It is a perspective view showing the appearance of the adhesive tape printer concerning one embodiment of the present invention. It is a sectional side view showing the internal structure of an adhesive tape printer. It is a perspective view showing the whole structure of a tape cartridge. It is a functional block diagram showing the structure of the control system of an adhesive tape printer. It is a figure showing the molecular structure by a simple linear type, a star type, a comb type, and a random type branched polymer which constitutes an example of a release agent layer. It is a figure showing the molecular structure of the polyethylene which is an example of a release agent layer and is a linear alkyl group of n polymerization degree. It is a figure showing the molecular structure by the branch polymer of a star polymer, a graph and a polymer, and a hyperbranched polymer which constitutes an example of a release agent layer. It is sectional drawing which shows notionally the laminated structure in the case where an adhesive layer will be in the state which contacted and adhered to the release agent layer in the radial direction of the adhesive tape roll. FIG. 3 is a cross-sectional view conceptually showing a behavior in which a desired print layer is formed in a release agent layer by ink ejection (release material layer is omitted).

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, when there are notes “front”, “rear”, “left”, “right”, “upper”, “lower” in the drawings, “front (front)” “rear (rear)” in the description in the specification “Left (left)”, “right (right)”, “upper (upper)” and “lower (lower)” refer to the noted direction.

<Schematic configuration of adhesive tape printer>
First, a schematic configuration of the pressure-sensitive adhesive tape printer according to the present embodiment will be described with reference to FIGS.

<Case>
1 and 2, an adhesive tape printer 1 according to this embodiment has a housing 2 that constitutes an outer shell of the apparatus. The housing 2 includes a housing body 2 a, a rear side opening / closing part 8, and a front side opening / closing cover 9.

  The housing main body 2a includes a first storage portion 3 provided on the rear side, and a second storage portion 5 and a third storage portion 4 provided on the front side.

  The rear side opening / closing part 8 is connected to the upper part on the rear side of the housing body 2a so as to be openable and closable. The rear opening / closing part 8 can be opened and closed above the first storage part 3 by rotating. The rear opening / closing part 8 is composed of a first opening / closing cover 8a and a second opening / closing cover 8b.

  The first opening / closing cover 8a can be opened / closed above the front side of the first storage unit 3 by rotating around a predetermined rotation axis K1 provided at the upper part on the rear side of the housing body 2a. is there. Specifically, the first opening / closing cover 8 a exposes the upper front side of the first storage unit 3 from the closed position (the state shown in FIGS. 1 and 2) covering the front upper side of the first storage unit 3. It is possible to rotate between the opening positions.

  Inside the first opening / closing cover 8a, a head holding body 10 including an inkjet head 10a is provided. The first opening / closing cover 8a is rotated about the rotation axis K1 so that the inkjet head 10a provided in the head holding unit 10 is moved by the conveying roller 12 provided in the housing body 2a. It is possible to move away from and approach the tape transport path relatively. Specifically, the first opening / closing cover 8a rotates between the closed position (the state shown in FIG. 2) in which the inkjet head 10a is close to the tape conveyance path and the open position in which the inkjet head 10a is separated from the tape conveyance path. It is possible to move.

  The second opening / closing cover 8b is provided on the rear side of the first opening / closing cover 8a, and rotates around a predetermined rotation axis K2 provided at the upper end portion on the rear side of the housing body 2a. Thus, the rear upper side of the first storage part 3 can be opened and closed separately from the opening and closing of the first opening and closing cover 8a. Specifically, the second opening / closing cover 8b is opened from the closed position (the state shown in FIG. 2) covering the upper rear side of the first storage unit 3 to expose the upper rear side of the first storage unit 3. It is possible to rotate between.

  When the first opening / closing cover 8a and the second opening / closing cover 8b are in the closed state, the outer peripheral portion 18 of the first opening / closing cover 8a and the edge 19 of the second opening / closing cover 8b are substantially the same. It is configured to contact and cover substantially the entire upper part of the first storage unit 3.

  The front side opening / closing cover 9 is connected to the upper part of the front side of the housing body 2a so as to be openable and closable. The front opening / closing cover 9 can open and close above the third storage portion 4 by rotating around a predetermined rotation axis K3 provided at the upper end of the front side of the housing body 2a. Specifically, the front opening / closing cover 9 is rotatable from a closed position (the state shown in FIG. 2) covering the top of the third storage unit 4 to an open position exposing the top of the third storage unit 4. is there.

<Printed tape roll and its surroundings>
At this time, as shown in FIGS. 2 and 3, the tape cartridge TK is detachably attached to the first predetermined position 13 below the front opening / closing cover 9 in the closed state in the housing body 2a. . The tape cartridge TK includes a print-receiving tape roll R1 that is wound around an axis O1.

  That is, the tape cartridge TK includes a print-receiving tape roll R1 and a connecting arm 16, as shown in FIG. The connecting arm 16 includes a pair of left and right first bracket portions 20 and 20 provided on the rear side, and a pair of left and right second bracket portions 21 and 21 provided on the front side.

  The first bracket portions 20 and 20 sandwich the print-receiving tape roll R1 from both the left and right sides along the axis O1. When the tape cartridge TK is mounted on the housing body 2a, the print-receiving tape roll The roll R1 is rotatably held around the winding core 39 (see FIG. 2). The first bracket portions 20 are connected to each other while avoiding interference with the outer diameter of the print-receiving tape roll R1 by a first connection portion 22 extending substantially along the left-right direction at the upper end portion.

  The print-receiving tape roll R1 is rotatable when the tape cartridge TK is mounted inside the housing body 2a. The to-be-printed tape roll R1 includes a to-be-printed adhesive tape 150 (including a release agent layer 154, a base material layer 153, an adhesive layer 152, and a release material 151, which will be described later) consumed by feeding. It is wound around the axis O1 in the left-right direction in advance.

  By mounting the tape cartridge TK, the print-receiving tape roll R1 is received from above and is stored in the first storage unit 3 in a state where the winding axis O1 of the print-receiving adhesive tape 150 is in the left-right direction. The print-receiving tape roll R1 is in a predetermined rotation direction (A direction in FIG. 2) in the first storage unit 3 in a state where the print-receiving tape roll R1 is stored in the first storage unit 3 (a state where the tape cartridge TK is mounted). The printed adhesive tape 150 is fed out.

  In this embodiment, the case where the to-be-printed adhesive tape 150 provided with adhesiveness is used is illustrated. That is, the printable adhesive tape 150 includes a release material 151, an adhesive layer 152 (corresponding to an adhesive layer), a base material layer 153 (corresponding to a tape base material layer), and a release agent layer 154 (corresponding to a release layer). The layers are laminated in this order from one side in the thickness direction (the lower side in the enlarged view of FIG. 2) to the other side (the lower side in the enlarged view of FIG. 2). The release agent layer 154 is a print layer 155 (see a partially enlarged view in FIG. 2, which will be described later in detail) that forms a desired print by discharging ink (which may be dye-based or pigment-based) by the inkjet head 10a. It is a layer to be formed. The pressure-sensitive adhesive layer 152 is a layer for attaching the base material layer 153 to an appropriate adherend (not shown). The release material 151 is a layer that covers the pressure-sensitive adhesive layer 152. The release material 151, the pressure-sensitive adhesive layer 152, the base material layer 153, and the release agent layer 154 correspond to the tape main body described in each claim.

<Specific examples of release layer>
As the release agent for forming the release agent layer 154, an olefin resin release agent, an acrylic resin release agent having a long chain alkyl group, or the like can be used.

<Specific examples of olefin resin release agent>
As the olefin resin release agent, for example, a crystalline olefin resin can be used. Examples of the crystalline olefin resin include the following.

1. Ethylene resin (branched low density polyethylene, linear low density polyethylene, high density polyethylene)
2. Polypropylene resin (propylene homopolymer (propylene homopolymer)), propylene-α-olefin copolymer (propylene-α-olefin copolymer), or stereoregular α-olefin resin may be used. As the hydrophilic olefin resin, one kind may be used alone, or two or more kinds may be used in combination.

<Specific examples of long-term alkyl release agents>
Further, examples of the long-chain alkyl release agent include the following.
1. Long-chain alkyl group-containing compound A compound obtained by reacting a long-chain alkyl isocyanate → a compound having a long-chain alkyl group having 8 to 30 carbon atoms in the side chain. In addition, when the carbon number is less than 8, it is difficult to ensure peeling performance. Moreover, when carbon number exceeds 30, availability and handling are difficult. Such peelable polymers include reaction products such as urethane polymers using alkyl isocyanate as a raw material component, acrylic polymers, and the like. Moreover, a reaction product can be produced by reacting an alkyl isocyanate having a long-chain alkyl group having 8 to 30 carbon atoms with a polyvinyl alcohol polymer or polyethyleneimine. For example, a reaction such as polyvinyl alcohol polymer + long chain alkyl isocyanate → polyvinyl carbamate or polyethyleneimine + long chain alkyl isocyanate → alkyl urea derivative may be mentioned.

<Specific example of base material layer>
As a kind of base material which forms the said base material layer 153, the following materials can be used, for example.
1. Polyethylene (PE), polypropylene (PP), ethylene / vinyl acetate copolymer (EVA), ethylene / methacrylic acid copolymer (EMMA), polybutene (PB), polybutadiene (BDR), polymethylpentene (PMP), polyethylene Terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polyimide (PI), polyetherimide (PEI), polyetherketone (PEK), polyetheretherketone (PEEK), nylon (NY) , Polyamide (PA), polycarbonate (PC), polystyrene (PS), expanded polystyrene (FS / EPS), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), saponified ethylene-vinyl acetate copolymer (EVOH) , Polyvinyl alcohol (PVA), normal cellophane (PT), moisture-proof cell Han (MST), polyacrylonitrile (PAN), vinylon (VL), polyurethane (PU), triacetylcellulose source (TAC),
2. Metal foil <aluminum foil (AI), copper foil>, vacuum-deposited (usually aluminum) film (VM),
3. Paper such as high quality paper, dust-free paper, glassine paper, clay-coated paper, resin-coated paper, laminated paper (polyethylene laminated paper, polypropylene laminated paper, etc.), kraft paper Nonwoven fabric Glass cloth

<Conveying roller, sub-roller and inkjet head>
Returning to FIG. 2, the transport roller 12 is provided on the middle upper side of the first storage unit 3 and the second storage unit 5 in the housing body 2 a. A portion of the first opening / closing cover 8 a that faces the conveyance roller 12 with the print-receiving adhesive tape 150 interposed therebetween is provided with a sub-roller 12 a that is driven to rotate by the conveyance roller 12. The conveyance roller 12 is stored in the first storage unit 3 in cooperation with the sub-roller 12a by being driven via a gear mechanism (not shown) by a conveyance motor M1 provided in the housing body 2a. The printed adhesive tape 150 fed out from the printed tape roll R1 is conveyed in a tape posture in which the tape width direction is the left-right direction.

  The head holding unit 10 provided on the first opening / closing cover 8a includes the inkjet head 10a. The inkjet head 10a forms a desired print on the release agent layer 154 of the print-receiving pressure-sensitive adhesive tape 150 sandwiched between the conveyance roller 12 and forms a printed pressure-sensitive adhesive tape 150 ′. The inkjet head 10a has a plurality of line head nozzles (not shown) so that full-color printing can be performed by ejecting four colors of ink of Y (yellow), M (magenta), C (cyan), and K (black), respectively. (Not shown) are connected to the corresponding color ink tanks (not shown) through the pipes. Moreover, the inkjet head 10a is provided with a piezoelectric actuator (not shown) in each of the line head nozzles. Then, the piezoelectric actuator is driven and controlled according to the print data based on the control of the inkjet head control circuit 300 (see FIG. 4 described later), so that the ink is released from each line head nozzle to the adhesive tape 150 to be printed. The print layer 155 is formed by being discharged onto the layer 154.

<Release material roll and its periphery>
As shown in FIGS. 2 and 3, the connecting arm 16 of the tape cartridge TK includes a peeling portion 17 including a substantially horizontal slit shape, for example. The peeling portion 17 is a portion where the peeling material 151 is peeled off from the printed adhesive tape 150 ′ that is fed out from the print-receiving tape roll R 1 and conveyed forward. As shown in FIG. 2, the printed adhesive tape 150 ′ on which the printing has been formed as described above is peeled off by the peeling portion 17, so that the peeling material 151 and other parts are removed. And a release adhesive layer 154 including the print layer 155, a base material layer 153, and a printed adhesive tape 150 ″ including the adhesive layer 152.

  As shown in FIG. 2, the tape cartridge TK has the release material roll R3 formed by winding the peeled release material 151 around a core 29 having an axis O3. ing. That is, with the mounting of the tape cartridge TK described above, the release material roll R3 is received by the second storage unit 5 from above and stored in a state where the axis O3 is in the left-right direction. The winding core 29 is a gear mechanism (not shown) by a release paper winding motor M3 provided in the housing body 2a in a state where the winding core 29 is stored in the second storage unit 5 (a state where the tape cartridge TK is mounted). The release material 151 is wound up by being rotated in a predetermined rotation direction (C direction in FIG. 2) in the second storage unit 5.

  At this time, as shown in FIG. 3, the second bracket portions 21 and 21 of the tape cartridge TK sandwich the release material roll R3 from both the left and right sides along the axis O3. Is mounted on the casing body 2a, the core 29 (in other words, the release material roll R3) is held rotatably around the axis O3. The second bracket portions 21 and 21 are connected by a second connection portion 23 that extends substantially along the left-right direction at the upper end portion. The first bracket parts 20 and 20 and the first connection part 22 on the rear side, and the second bracket parts 21 and 21 and the second connection part 23 on the front side are a pair of left and right roll connection beam parts 24, 24 are connected.

  3 shows a state before the release material 151 is wound around the core 29 and the release material roll R3 is formed (in the case of an unused tape cartridge TK). That is, the substantially circular roll flange portions f3 and f4 provided so as to sandwich both sides in the width direction of the release material 151 are illustrated, and a symbol “R3” is provided at a place where the release material roll R3 is formed for convenience. Is attached.

<Printed adhesive tape roll and its surroundings>
On the other hand, as shown in FIG. 2, a winding mechanism 40 having a winding core 41 for sequentially winding the printed adhesive tape 150 ″ is received in the third storage portion 4 from above. The mechanism 40 is accommodated so that the winding core 41 is rotatably supported around the axis O2 in a state where the winding axis O2 of the printed tape 150 ″ is in the left-right direction. Then, in a state where the winding mechanism 40 is housed in the third housing portion 4, the winding core 41 is driven via a gear mechanism (not shown) by the adhesive winding motor M <b> 2 provided inside the housing body 2 a. Then, the printed adhesive tape 150 ″ is wound around the outer periphery of the core 41 and laminated by rotating in a predetermined rotation direction (direction B in FIG. 2) in the third storage unit 4. The printed adhesive tape 150 ″ is sequentially wound around the outer periphery of the winding core 41, thereby forming a printed adhesive tape roll R 2 (corresponding to an adhesive tape roll).

<Cutter mechanism 30>
As shown in FIG. 2, a cutter mechanism 30 is provided on the downstream side of the inkjet head 10a and the upstream side of the printed adhesive tape roll R2 along the tape transport direction.

  Although not shown in detail, the cutter mechanism 30 includes a movable blade and a traveling body that supports the movable blade and can travel in the tape width direction (in other words, the left-right direction). Then, the traveling body travels by driving a cutter motor (not shown) and the movable blade moves in the tape width direction, thereby cutting the printed adhesive tape 150 ″ in the width direction.

<Outline of operation of adhesive tape printer>
Next, an outline of the operation of the adhesive tape printer 1 having the above configuration will be described.

  That is, when the tape cartridge TK is mounted at the first predetermined position 13, the print-receiving tape roll R1 is stored in the first storage portion 3 located on the rear side of the housing body 2a, and the front side of the housing body 2a. The axis O3 side on which the release material roll R3 is formed is stored in the second storage portion 5 located in the position. In addition, a winding mechanism 40 for forming the printed adhesive tape roll R2 is stored in the third storage portion 4 located on the front side of the housing body 2a.

  In this state, the user manually peels off the release material layer 151 from the adhesive tape 150 to be printed (printing has not started yet), and the tip of the tape composed of the base material layer 153 and the adhesive layer 152 is removed. It is attached to the core 41 of the winding mechanism 40. When the transport roller 12 is driven, the print-receiving adhesive tape 150 fed out by the rotation of the print-receiving tape roll R1 stored in the first storage unit 3 is transported to the front side. Then, a print layer 155 by a desired printing is formed on the release agent layer 154 of the printed adhesive tape 150 to be conveyed by the ink jet head 10a to form a printed adhesive tape 150 ′. When the printed adhesive tape 150 ′ that has been printed is further conveyed to the front side and conveyed to the peeling portion 17, the release material 151 is peeled off at the peeling portion 17 and the printed adhesive tape 150 ″ is printed. The peeled release material 151 is transported downward and introduced into the second storage unit 5 and wound inside the second storage unit 5 to form a release material roll R3.

  On the other hand, the printed adhesive tape 150 ″ from which the release material 151 has been peeled off is further conveyed forward and introduced into the third storage unit 4, and the core 41 of the winding mechanism 40 in the third storage unit 4. The printed adhesive tape roll R2 is formed by being wound around the outer peripheral side of the sheet, and the cutter mechanism 30 provided on the downstream side (that is, the front side) in the transport direction cuts the printed adhesive tape 150 ″. Thereby, the printed adhesive tape 150 ″ wound around the printed adhesive tape roll R2 is cut at a timing desired by the user, and after printing, the printed adhesive tape roll R2 is taken out from the third storage unit 4. Can do.

  At this time, there is a chute 15 (see FIG. 2) that switches the transport path of the printed adhesive tape 150 ″ between the side toward the printed tape roll R2 and the side toward the discharge port (not shown). That is, by switching the tape path by switching the chute 15 with a switching lever (not shown), the printed adhesive tape 150 ″ after the printing is formed in the third storage section 4 as described above. For example, it may be discharged to the outside of the housing 2 as it is from a discharge port (not shown) provided on the second opening / closing cover 8b side of the housing 2, for example.

<Control system>
Next, the control system of the adhesive tape printer 1 will be described with reference to FIG. In FIG. 4, the adhesive tape printer 1 includes a CPU 212 that constitutes a calculation unit that performs a predetermined calculation. The CPU 212 is connected to the RAM 213 and the ROM 214. The CPU 212 performs signal processing in accordance with a program stored in advance in the ROM 214 while using the temporary storage function of the RAM 213, thereby controlling the entire adhesive tape printer 1.

  Further, the CPU 212 controls the driving of the motor M1 for driving the conveying roller M1 that drives the conveying roller 12 and the motor M2 for the adhesive winding that drives the core 41 of the winding mechanism 40. The motor drive circuit 219 for performing the above, the motor drive circuit 220 for performing the drive control of the release paper winding motor M3 for driving the release material roll R3, and the energization control of the piezoelectric element (not shown) of the inkjet head 10a. The inkjet head control circuit 300 is connected to a display unit 215 that performs appropriate display, and an operation unit 216 that can be appropriately input by a user. In this example, the CPU 212 is connected to the PC 217 as an external terminal. However, the CPU 212 may not be connected when the adhesive tape printer 1 operates alone (so-called all-in-one type).

  The ROM 214 stores a control program for executing predetermined control processing. The RAM 213 stores, for example, print data generated in response to an operator's operation on the operation unit 216 (or PC 217) as dot pattern data to be printed as the print layer 155 and stored. A buffer 213a is provided.

  Based on the control program, the CPU 212 feeds out the print-sensitive adhesive tape 150 by the transport roller 12, and uses the inkjet head 10a to print one image corresponding to the dot pattern data stored in the image buffer 213a. Repeat printing for. Specifically, the CPU 212 controls the driving of the piezoelectric actuator provided in the inkjet head 10a through the inkjet head control circuit 300 according to the print data, and ejects ink from the nozzles. At this time, the driving voltage, the ejection speed, the ejection amount, and the like of the inkjet head 10a are controlled by a known method based on the control parameters corresponding to the types of various inks.

<Features of the embodiment>
As described above, the feature of the present embodiment is the microscopic structure of the release agent layer 154. In the present embodiment, the release agent layer 54 is formed of an organic polymer porous material as a release agent. Hereinafter, the details will be described in order.

<Molecular weight distribution of polymer>
In general, in polymer chemistry, there are two types of molecular weights: number average molecular weight Mn and weight average molecular weight Mw. In the case of a single molecule such as a low molecule, Mn and Mw coincide with each other. However, when the molecular weight distribution is not a single molecule, Mn <Mw is always satisfied. The larger the value of Mw / Mn that is an index of the molecular weight distribution (for example, 3 or more), the wider the distribution and the more intermolecular pores. Conversely, the smaller the value of Mw / Mn (for example, less than 3), the narrower the distribution and the more or less intermolecular pores. That is, the closer the Mw / Mn value is to 1, the single molecule. In the present embodiment, by using a release agent having a Mw / Mn value of 3 or more, which is an index of molecular weight distribution, in the formed release agent layer 154, gaps due to macropores having a diameter of about several μm. Has been built.

<Polymerization control>
And in this embodiment, in order to produce the porous body with a large value of Mw / Mn as mentioned above, the clearance gap between molecules is controlled by controlling superposition | polymerization in an organic polymer.

  That is, in normal radical polymerization, the arrangement of monomers is disordered copolymerization and randomly aggregated, so it is difficult to control the form, size, volume, etc. of intermolecular pores. Therefore, in this embodiment, by controlling the form, size, volume, etc. of intermolecular pores by living radical polymerization (see FIG. 7 described later), a plurality of types of polymerization components having different degrees of polymerization are mixed. Can be realized. Thereby, in the release agent layer 154, an organic polymer porous body having macropores with a diameter of about several μm can be obtained.

<Structural example of porous organic polymer>
An example of the chemical structure of the organic polymer porous body will be described by taking as an example the case where the ethylene resin, which is a crystalline olefin resin, is used for the release agent layer 154.

  For example, as shown in FIG. 5 (a), polyethylene (PE) is a polymer (linear polymer) having the simplest linear basic structure obtained by polymerization (block copolymerization) of ethylene. Specifically, it is composed only of repeating ethylene groups shown in FIG. However, by appropriately controlling the polymerization by a known method as described above, it is possible to make a difference in the average molecular weight, the number of branches, and the crystallinity, and the density, thermal characteristics, mechanical characteristics, and the like can be changed accordingly. Can be different.

  At that time, various polymers such as a star polymer shown in FIG. 5 (b), a comb polymer shown in FIG. 5 (c), a random polymer shown in FIG. It can also be developed into branched polymers. Furthermore, as an example of expansion of this branched polymer, for example, a star polymer (see FIG. 7A) in which three or more polymers are radially branched from the center (and branch points are concentrated in one place), A graft polymer (see FIG. 7 (b)) in which a large number of polymers are linked in a branched manner on one polymer chain, or a hyperbranched polymer with a random branch structure having a large number of branch points (see FIG. 7 (c)). Etc.).

  The branched polymer as described above has greatly different physical properties and behavior compared to the above-mentioned linear polymer, and even if a polymer of the same chemical species is made into a branched structure, the physical properties and properties of the material are greatly expanded.

  In this embodiment, in order to strengthen the adhesion between the ink of the printing layer 155 and the release agent layer 154, the value of the gap between the polymer molecular chains is controlled to be in a specific range during the above polymerization control. doing. For example, in the case of the dye-based ink, the gap between the polymer molecular chains is larger than 0 nm (for example, 2 nm or more) and 1000 nm or less, and in the case of the pigment, the gap between the polymer molecular chains is 30 nm or more and 1000 nm or less. It is envisaged. As described above, the ink material can be either dye-based or pigment-based. However, the dye-based ink is more preferable from the viewpoint that the release agent layer 154 uses a release agent made of an organic polymer porous material. More preferred.

  In the above description, the case where an ethylene-based resin is used for the release agent layer 154 has been described as an example, but the present invention is not limited thereto. That is, when another crystalline olefin resin such as a polypropylene resin is used, or when a long-chain alkyl release agent such as a long-chain alkyl group-containing compound is used, the degree of polymerization is mutually increased by the same method as described above. A release agent in which different types of polymerization components are mixed can be realized. Then, the organic polymer porous material obtained by the release agent can be used as the release agent layer 154.

<Effects of Embodiment>
Next, the effect of this embodiment comprised as mentioned above is demonstrated.

<Improved antifouling property>
As described above, in this embodiment, the print-receiving adhesive tape 150 wound around the print-receiving tape roll R1 has the release agent layer 154 and the base material layer from the other side in the thickness direction toward the one side. 153 and the pressure-sensitive adhesive layer 152 have a laminated structure including this order. Then, a printed adhesive tape 150 ″ in which the printing layer 155 is formed on the release agent layer 154 of the printed adhesive tape 150 is generated and wound as a printed adhesive tape roll R 2. The user has a desired length. The printed adhesive tape 150 ″ is fed from the printed adhesive tape roll R2 and attached to an appropriate adherend. At this time, by providing the release agent layer 154 on the other side of the base material layer 153, dirt and dust are less likely to adhere to the tape surface during the use, and antifouling properties can be maintained.

<Improvement of peelability>
In addition, since the print-receiving pressure-sensitive adhesive tape 150 includes the release agent layer 154, the base material layer 153, and the pressure-sensitive adhesive layer 152 in this order as described above, in the print-receiving tape roll R1, the pressure-sensitive adhesive layer 152 is included. Is in contact with the release agent layer 154 in the radial direction of the roll. The release agent layer 154 is also provided for the purpose of facilitating the re-peeling of the adhesive with the adhesive layer 152. When the printing adhesive tape 150 is fed out from the printing tape roll R1 as described above, The pressure-sensitive adhesive layer 152 is sequentially peeled off from the release agent layer 154 and peeled off. Thereby, the peelability from the release agent layer 154 when the printable adhesive tape 150 from the printable tape roll R1 is fed out can be improved.

<Preventing peeling of printed layer>
In the present embodiment, as described above, the printed adhesive tape 150 ″ includes the release agent layer 151, the base material layer 153, and the adhesive layer 154 in this order. As a result, the printed adhesive tape roll is printed. In R2, in the portion where the printing layer 155 is formed, as shown in FIG. 8, the surface of the other side (for example, the upper side) of the printing layer 155 and the adhesive layer 154 are overlapped with each other in the radial direction of the roll. At this time, if the adhesiveness between the printing layer 155 and the release agent layer 154 is small, as described above, when the printed adhesive tape 150 ″ is fed out from the printed adhesive tape roll R2 and used, the peeling is performed. The print layer 155 formed on the agent layer 154 is peeled off again toward the pressure-sensitive adhesive layer 152, which may adversely affect the content of the formed print.

  Therefore, in this embodiment, the release agent layer 154 is an olefin resin release agent or an acrylic resin release agent having a long-chain alkyl group, and a plurality of types of polymerizations having different degrees of polymerization by the above-described method. It is comprised by the release agent which mixed the component. As shown in FIG. 9A, ink is ejected from the inkjet head 10 a onto the release agent layer 154 of the print-receiving adhesive tape 150. At this time, the release agent layer 154 made of the release agent is made of a release agent made of an organic polymer porous material (that is, the aforementioned microscopic pores are molecules constituting the release agent layer 154). Many are formed between each other). As a result, as shown in FIG. 9B, the ink particles (which constitute the printing layer 155) enter and penetrate into the gaps due to the pores in the release agent layer 154. As a result, as shown in FIG. 9C, the printing layer 155 formed with this ink can be in a state of being firmly adhered to the release agent layer 154. Thereby, it is possible to prevent the print layer 155 from being peeled off toward the adjacent adhesive layer 152 in the roll when the user uses the printed adhesive tape roll R2 during use. As a result, it is possible to prevent an adverse effect on the formed printed content.

  As described above, according to the present embodiment, while improving the peelability of the print-receiving adhesive tape 150 at the time of feeding from the print-receiving tape roll R1, it is possible to improve the print contents at the time of feeding from the printed adhesive tape roll R2. It is possible to easily realize the optimum characteristics that prevent adverse effects and can maintain the antifouling property when the printed adhesive tape 150 ″ is attached and used.

  In the present embodiment, in particular, in the release agent layer 154, the gap between the polymer molecular chains is 30 nm or more and 1000 nm or less. Accordingly, the ink particles constituting the printing layer 155 can be surely entered between the polymer molecules constituting the release agent layer 154 so that the print layer 155 can be firmly adhered to the release agent layer 154.

  In the present embodiment, in particular, the printing layer 155 of the printed adhesive tape 150 ″ is, for example, an ink layer composed of a dye. Thereby, the dye discharged from the inkjet head 10a as described above. The ink particles can surely enter between the molecules constituting the release agent layer 154 and firmly adhere to the release agent layer 154.

  In addition, in the above description, when there are descriptions such as “vertical”, “parallel”, and “plane”, the descriptions are not strict. That is, the terms “vertical”, “parallel”, and “plane” are acceptable in design and manufacturing tolerances and errors, and mean “substantially vertical”, “substantially parallel”, and “substantially plane”. .

  In addition, in the above description, when there are descriptions such as “same”, “equal”, “different”, etc., in terms of external dimensions and sizes, the descriptions are not strict. That is, the terms “identical”, “equal”, and “different” mean that “tolerance and error in manufacturing are allowed in design and that they are“ substantially identical ”,“ substantially equal ”, and“ substantially different ”. .

  In addition, in the above, the arrow shown in FIG. 4 shows an example of the signal flow, and does not limit the signal flow direction.

  In addition to those already described above, the methods according to the above embodiments and modifications may be used in appropriate combination.

  In addition, although not illustrated one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.

DESCRIPTION OF SYMBOLS 1 Adhesive tape printer 10a Inkjet head 150 Printed adhesive tape 150 ', 150 "Printed adhesive tape 151 Release material 152 Adhesive layer (adhesive layer)
153 Base material layer (tape base material layer)
154 Release agent layer (release layer)
155 Printing layer R1 Printed tape roll R2 Printed adhesive tape roll (adhesive tape roll)

Claims (3)

A pressure-sensitive adhesive tape having a dimension in the thickness direction and having a tape body and a print layer formed on the tape body by ejection from an inkjet head,
The tape body includes a tape base layer, an adhesive layer provided on one side of the tape base layer in the thickness direction and configured by a predetermined adhesive, and the tape base layer in the thickness direction. A release layer provided on the other side,
The release layer is
It is an olefin resin release agent, or an acrylic resin release agent having a long-chain alkyl group, and is composed of a release agent in which a plurality of polymerization components having different polymerization degrees are mixed,
The printing layer is
Formed on the other side of the release layer,
The printed adhesive tape is
An adhesive tape roll configured to be wound around a predetermined axis while the release layer is on the outer peripheral side. In the pressure-sensitive adhesive tape roll according to claim 1,
The pressure-sensitive adhesive tape roll, wherein a gap between polymer molecular chains in the release layer of the printed pressure-sensitive adhesive tape is 30 nm or more and 1000 nm or less. In the pressure-sensitive adhesive tape roll according to claim 1 or 2,
An adhesive tape roll, wherein the printed layer of the printed adhesive tape is an ink layer composed of a dye.

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