JP2013120252A - Printing method of cylindrical label and interposition member for cylindrical label opening - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printing method of a cylindrical label, which is capable of beautifully representing a desired display in a prescribed position by laser printing.SOLUTION: In the printing method of a cylindrical label, a cylindrical label long-sizes material 10 obtained by cylindrically forming a long-sized film including a laser-colored layer is irradiated with a laser beam by a laser printer B to perform printing. The cylindrical label long-sized material 10 is opened to provide powdery dust collection means 4 on the inside of the cylindrical label long-sized material, and in this state, an outer surface of the cylindrical label long-sized material 10 is irradiated with the laser beam to cause the laser-colored layer to develop a color. As for the powdery duct collection means 4, for example, an interposition member is used which opens a flat cylindrical label long-sized material and has a powdery dust receiving recess in a part corresponding to irradiation of the laser beam.

Description

  The present invention relates to a method for printing a desired display using a laser beam on a cylindrical label, and an inner side of the cylindrical label long body or the like when printing on the cylindrical label long body or the cylindrical label. The present invention relates to an interposed member for opening a cylindrical label.

2. Description of the Related Art Conventionally, label-attached adherends on which cylindrical labels are attached are widely distributed around various adherends such as beverage containers.
The cylindrical label is usually obtained by cutting a long cylindrical label formed by forming a long film into a cylindrical shape into a predetermined length, and covering the adherend with the cylindrical label. An adherend is obtained.
When manufacturing an adherend with a label mechanically and continuously, a long cylindrical label formed by forming a long film into a cylindrical shape is folded into a flat shape, and this is wound around a roll. Is loaded into the labeler, and the long cylindrical label is pulled out from the roll and fed onto the line. After the perforations are formed on the line as needed, the long tubular label is just before the adherend. Is cut into a predetermined length to form one cylindrical label, and a series of steps are performed in which the cylindrical label is opened and attached to the adherend.

By the way, various displays are printed on the cylindrical label by a gravure printing method or the like.
The plate printing method such as the gravure printing method is suitable for printing a display with a predetermined design (for example, a product name, a design related to a product, a manufacturer name, etc., hereinafter referred to as a standard display). To print on-demand display (for example, manufacturing date, expiry date, sweepstakes application ID when performing a sweepstakes campaign, etc., hereinafter referred to as variable display) that can vary depending on the situation. Is not suitable.
For example, laser printing is suitable for such variable display printing. Laser printing is a printing method in which a desired display appears by irradiating laser light.
As such a laser printable label, a label using a film having a laser coloring layer is known (Patent Document 1).
In such a label, when the laser is irradiated, the colored layer is partially carbonized and a desired display appears.

For example, when performing laser printing on a cylindrical label capable of laser printing, the present inventors (1) irradiate laser light from the outer surface of the cylindrical label after mounting the cylindrical label on the adherend, or (2) Before forming a long film into a cylindrical shape, a pattern of irradiating laser light can be considered.
In the case of (1) above, after a cylindrical label is attached to the adherend in a predetermined position to obtain an adherend with a label, the laser of the cylindrical label in the predetermined position of the adherend with label Irradiate the color development layer (scheduled laser printing area) with laser light. For this reason, it is necessary to attach the cylindrical label to a predetermined position of the adherend, and the label-attached adherend itself is attached so that the laser printing scheduled area of the adherend with the label faces the laser printing apparatus. Must be fixed in place.
However, for example, when the outer shape of the adherend is substantially cylindrical, it is difficult to accurately attach the cylindrical label to a predetermined position of the adherend, and further, the labeled adherend is attached to the laser printing apparatus. It is difficult to fix in place. For this reason, there is a possibility that the laser printing is shifted from a predetermined position of the laser printing scheduled area, or the display represented by the laser printing is deviated from the laser printing scheduled area, and a part of it is not displayed.

In the case of (2) above, the laser beam is irradiated in the state of a long film, so that laser printing can be performed at a relatively simple and accurate position with respect to the laser printing scheduled area.
However, as described above, a long film is formed into a cylindrical shape, cut to obtain a cylindrical label, and then the cylindrical label is attached to an adherend, so laser printing is performed on the long film. After that, there is a long time lag until it is attached to the adherend as a cylindrical label. If there is such a long time lag, the contents of variable display such as the date of manufacture and the expiration date cannot be accurately represented by laser printing. In addition, a display by laser printing may come into contact with mechanical equipment such as a production line before obtaining a cylindrical label from a long film, and the display may become unclear.

JP 2008-279701 A

  An object of the present invention is to provide a cylindrical label printing method and the like which can clearly display a desired display at a predetermined position by laser printing.

As described above, in the mechanical manufacturing process, the cylindrical label is obtained by cutting the elongated cylindrical label long body into a predetermined length, and the obtained flat cylindrical label is: It is opened and attached to the adherend.
When the present inventors perform laser printing on a cylindrical label before being attached to an adherend (in the state of the cylindrical label continuous body or in a state of the cylindrical label immediately after being cut), a predetermined position is obtained. We focused on the fact that laser printing is possible and the time lag is short.
However, when laser printing is performed on a flat cylindrical label elongated body or a printing scheduled area of a cylindrical label, a fine spot appears on the cylindrical label, which causes a problem that the appearance is impaired.
As a result of further earnest research on this problem, the following has been found.

That is, when a laminate film in which a laser coloring layer is sandwiched between two film-forming films is used as a film for forming a cylindrical label, the frequency of the fine spots appearing low. On the other hand, a film in which a laser coloring layer is provided on the back side of one film-forming film and a layer (for example, a background printing layer or an overcoat layer) formed by a printing method on the back side of the coloring layer is used. In the cylindrical label formed in this way, the frequency of the fine spots is high.
And it discovered that the generation | occurrence | production of the said fine spot was that the dust scattered during the irradiation of a laser beam, and adhered to the inner surface of a cylindrical label. When a laminated film in which a laser color-developing layer is sandwiched between two film-forming films is used, since the frequency of the occurrence of spots is low, the dust is formed by a laser color-forming layer forming material or a cylindrical label when irradiated with laser light. It is presumed that the overcoat layer forming material provided on the innermost surface of the steel plate is generated by breaking.

  Note that Patent Document 1 uses a label provided with an ink layer having a thickness of three times or more the thickness of the laser coloring layer on the back surface of the laser coloring layer, so that the surface swells even when the laser irradiation conditions are strengthened. It is disclosed that an appropriate print density without peeling can be obtained. It is considered that fine spots occur when laser printing is performed in a state where the label of Patent Document 1 is formed into a cylindrical shape and is flattened. However, Patent Document 1 does not suggest any such problems. Absent.

  The present invention is a printing method of a cylindrical label, which is printed by irradiating a laser beam on a cylindrical label elongated body or a cylindrical label in which a long film having a laser coloring layer is formed into a cylindrical shape, In the state where the cylindrical label long body or the cylindrical label is opened and the dust collecting means is provided on the inside thereof, laser beam is irradiated from the outer surface of the cylindrical label long body or the cylindrical label to form a laser coloring layer. Provided is a method for printing a cylindrical label that develops color.

As described above, when the laser beam is irradiated from the outer surface of the cylindrical label long body or the cylindrical label, the forming material such as the laser coloring layer is crushed, and the dust resulting from the formation is the cylindrical label long body or the cylindrical shape. Occurs inside the label.
The cylindrical label printing method of the present invention is provided with dust collecting means inside the long cylindrical label or the cylindrical label, so that laser light is emitted from the outer surface of the long cylindrical label or the cylindrical label. When irradiated, dust caused by a forming material such as a laser coloring layer is collected in the dust collecting means. Therefore, dust can be prevented from adhering to the long surface of the cylindrical label or the inner surface of the cylindrical label, and a desired display can be clearly displayed by laser printing.
In addition, if laser printing is performed on a long cylindrical label or a cylindrical label, it can be printed relatively easily in a predetermined position, and further, since the time lag from laser printing to mounting on an adherend is short, For example, the contents can be accurately expressed even when the variable display is laser-printed.

In a preferred method for printing a cylindrical label according to the present invention, the dust collecting means is interposed such that the cylindrical label long body or the cylindrical label is opened through the cylindrical label long body or the cylindrical label. It is a member, and is an intervening member in which a dust accommodating recess is formed in a portion corresponding to laser light irradiation.
Since the dust accommodating recess is formed in a portion corresponding to the laser beam irradiation, the interposed member is configured so that dust generated when the laser beam is irradiated from the outer surface of the long cylindrical label or the cylindrical label is stored in the dust. Collected in the recess.

In a preferred method for printing a cylindrical label according to the present invention, a capturing material for capturing dust is provided in the dust accommodating recess of the interposition member.
By using the interposition member in which the trapping material is provided in the dust storage recess, the dust collected in the dust storage recess is held by the trapping material. Therefore, it is possible to prevent the dust once collected in the dust containing recess from being scattered from the recess to the cylindrical label long body side.

In a preferred method for printing a cylindrical label according to the present invention, the upper side of the dust-receiving recess is covered with a top wall having an opening in part.
By using an intervening member whose upper side is covered with a top wall that has an opening in part on the upper side of the dust storage recess, dust collected in the dust storage recess from the opening of the top wall is removed from the recess by the length of the cylindrical label. It is possible to prevent scattering to the scale body side.

According to another aspect of the present invention, an intermediate member for opening a cylindrical label is provided.
This interposition member is used by interposing inside a cylindrical label continuous body or a cylindrical label folded in a flat shape, and accommodates dust generated from the long cylindrical label or the cylindrical label. A dust containing recess is provided.

The cylindrical label printing method of the present invention can display a desired display on a cylindrical label at a predetermined position by laser printing.
According to the printing method of the cylindrical label of the present invention, dust generated during laser printing is difficult to adhere to the long surface of the cylindrical label or the inner surface of the cylindrical label, so that a cylindrical label having a clean appearance can be manufactured.
The tubular label opening interposition member of the present invention is suitable as a member for opening a long tubular label or a tubular label when performing laser printing.

The perspective view of the cylindrical label of an open state. The perspective view of the cylindrical label of a flat state. The partial expanded sectional view in the III-III line of FIG. 2 (sectional drawing of the film which forms a cylindrical label). The schematic reference figure which shows the flow on a manufacturing line until it forms a cylindrical label from a cylindrical label elongate body and mounts it on a to-be-adhered body. The top view of the interposition member which concerns on 1st Embodiment. The same side view. Sectional drawing in the VII-VII line of FIG. Sectional drawing in the VIII-VIII line of FIG. It is reference sectional drawing which shows the state which is performing the laser printing on the cylindrical label elongate body inserted by the outer side of the interposed member, Comprising: Sectional drawing cut | disconnected in the direction orthogonal to the longitudinal direction of a cylindrical label elongate body . Sectional drawing which is the same reference sectional drawing, and was cut | disconnected along the longitudinal direction of a cylindrical label elongate body. Sectional drawing of the interposition member which concerns on the modification of 1st Embodiment (sectional drawing cut | disconnected in the location similar to the VIII-VIII line of FIG. 5). Sectional drawing of the interposition member which concerns on the further modification of 1st Embodiment (sectional drawing cut | disconnected in the location similar to the VIII-VIII line of FIG. 5). The top view of the intervention member concerning a 2nd embodiment. Sectional drawing in the XIV-XIV line | wire of FIG. The top view of the interposed member which concerns on the modification of 2nd Embodiment. Sectional drawing in the XVI-XVI line of FIG. The perspective view of the intervention member concerning a 3rd embodiment. FIG. The same side view. Sectional drawing in the XX-XX line of FIG. Sectional drawing of the interposed member which concerns on the modification of 3rd Embodiment (sectional drawing cut | disconnected in the location similar to the XX-XX line of FIG. 18).

[About cylindrical labels]
The cylindrical label of the present invention is a heat-shrinkable cylindrical label that can thermally contract at least in the circumferential direction, a self-expandable cylindrical label that can expand and contract at least in the circumferential direction, or a heat that can be thermally contracted and expanded at least in the circumferential direction. Either a shrinkable or self-stretching cylindrical label may be used.
The heat-shrinkable cylindrical label is also referred to as a shrink tube or a shrink label, and the self-expandable cylindrical label is also referred to as a stretch cylindrical label or a stretch label. The characteristic cylindrical label is also called a shrink stretch label.

The cylindrical label of the present invention is a cylindrical body in which a film having a laser coloring layer is formed into a cylindrical shape.
The film constituting the cylindrical label has at least a base film and a laser coloring layer laminated on the back surface of the base film, and if necessary, a design printing layer, a background printing layer, an overcoat layer, a heat insulating layer In addition, a light shielding layer, a gas barrier layer, or the like may be included.
The base film has heat shrinkability and / or self-stretchability in at least one direction in the plane. By using a heat-shrinkable base film, a heat-shrinkable cylindrical label can be constructed, and by using a self-stretchable base film, a self-stretchable tubular label can be constructed. A heat-shrinkable and self-stretchable cylindrical label can be constructed by using a base film having properties.

  The material of the said base film is not specifically limited, A conventionally well-known material can be used according to the property. For example, heat shrinkable base film forming materials include polyethylene terephthalate, polyester resins such as polylactic acid, olefin resins such as polypropylene, styrene resins such as polystyrene and styrene-butadiene copolymers, and cyclic olefin resins. Examples thereof include a synthetic resin film-forming film made of one or a mixture of two or more selected from thermoplastic resins such as resins and vinyl chloride resins.

The base film may be a single-layer film-forming film or a laminated film in which two or more film-forming films are laminated and bonded.
Further, the base film may be non-transparent, but usually a film having excellent transparency is used. The transparent base film is preferably a film having a total light transmittance of 70% or more, more preferably 80% or more, and further preferably 90% or more. However, the total light transmittance refers to a value measured by a measuring method in accordance with JIS K7105 (plastic optical property test method).
Although the thickness of a base film is not specifically limited, Generally, they are 10 micrometers-100 micrometers, Preferably they are 20 micrometers-80 micrometers.

The base film is usually provided with a design printing layer. The design print layer is provided on the base film mainly for representing a standard display, and the design print layer can be printed by a conventionally known printing method. Usually, the design printing layer is formed by a plate printing method such as a gravure printing method.
The design print layer may be provided in a solid shape on substantially the entire base film, or may be provided in a partial region of the base film.
The thickness of the design printing layer is usually 1 μm to 10 μm.

The background print layer is a layer in which a predetermined color ink such as white is printed in a solid shape. The background printing layer is provided as necessary in order to make it easy to see the display shown on the laser coloring layer and the design shown on the design printing layer. The background printing layer is formed by a plate printing method such as a gravure printing method. The color of the background printing layer is appropriately set according to the color of the color former of the laser coloring layer, the color of the design printing layer, etc., but is usually white or silver, preferably white. The background print layer may be provided in a solid shape over substantially the entire surface of the base film, or may be provided in a partial region of the base film.
The thickness of the background print layer is usually 1 μm to 10 μm.

The material for forming the laser coloring layer is not particularly limited as long as it can be colored by irradiation with laser light, and a conventionally known material can be adopted. For example, the material for forming the laser coloring layer includes a coloring agent that reacts with laser light irradiation and a binder that fixes the coloring agent, and various additives as necessary.
Examples of the color former include an agent that develops itself when irradiated with laser light, an agent that develops color (for example, changes to black by carbonization) a binder resin existing in the surroundings by irradiation with laser light, and the color former itself. Examples include agents that develop color in cooperation with a binder resin and the like.

  As the color former, for example, pigments, dyes, inorganic materials and the like can be used. Specifically, as the color former, yellow iron oxide, inorganic lead compound, manganese violet, cobalt violet, mercury, cobalt, copper, bismuth, nickel and other metal compounds, pearlescent pigments, silicon compounds, mica, kaolins , Silica sand, diatomaceous earth, talc, antimony / tin oxide, and titanium oxide-coated mica. These color formers can be used alone or in combination of two or more.

Examples of the binder include olefin-based resins such as polyethylene, ethylene-α olefin copolymer, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, and acid-modified by modifying this with acid. Examples include olefin resins; vinyl acetate resins; (meth) acrylic resins; vinyl chloride resins; styrene resins; carbonate resins; Moreover, a photocurable resin, a two-component reactive resin, etc. can also be used as a binder.
Examples of the additive include a developer, an antioxidant, an ultraviolet absorber, a light stabilizer, a filler, and a flame retardant. The additive is added in a range that does not impair the color development of the color former.
The material for forming the laser color forming layer described in JP-A-2008-279701 can also be used for forming the laser color forming layer of the present invention.

The content of the color former in the laser coloring layer can be adjusted within a conventionally known range, and is usually about 1% by mass to 50% by mass.
The thickness of the laser coloring layer is not particularly limited, and is usually 0.5 μm to 50 μm, preferably 1 μm to 30 μm.

  The method for forming the laser coloring layer is appropriately selected according to the material of the binder. Preferably, the laser color-developing layer can be formed by a method (solution coating method) in which a color former, a binder, and an additive are dissolved in an appropriate solvent, and this solution is applied to a base film and dried.

The laser color-developing layer develops a predetermined color by causing the color former to be carbonized or thermally discolored by laser light irradiation.
As the laser beam, YAG laser beam (yttrium / aluminum / garnet laser beam, wavelength = 1,064 nm), YVO ₄ laser beam (yttrium / vanadate laser beam, wavelength = 1,064 nm), or the like can be used. Since these laser beams are transmitted through the base film, the color former can be colored without damaging the base film.

  The laser coloring layer may be laminated on either the front surface or the back surface of the base film, but is usually laminated on the back surface of the base film. In addition, the back surface of a film becomes the inner side when it is set as a cylindrical label, while the surface of the film becomes the outer side when it is set as a cylindrical label.

  The laser coloring layer may be provided in a solid shape on substantially the entire base film, or may be provided in a partial region of the base film.

Moreover, the overcoat layer may be provided in the substantially whole outermost surface of the base film as needed.
The overcoat layer is a layer that forms the innermost surface of the cylindrical label. By providing an overcoat layer, it is possible to prevent the design printing layer and the laser coloring layer from falling off, and by mixing a silicone resin or the like with the overcoat layer forming material, the slippage of the cylindrical label with respect to the adherend is improved. Can be improved.
The material for forming the overcoat layer is not particularly limited, and a conventionally known resin such as an acrylic resin can be used.
The thickness of the overcoat layer is not particularly limited, and is usually about 1 μm to 5 μm.

FIG. 1 is an example of a cylindrical label according to the present invention, and is a perspective view in a state in which the cylindrical label is opened. FIG. 2 is a perspective view in a state in which the cylindrical label is folded flat. FIG. 3 is an enlarged cross-sectional view of a part of the film constituting the cylindrical label.
The cylindrical label 1 is attached to the adherend in an open state (see FIG. 1). However, in FIG. 1, the cylindrical label 1 is opened in a substantially true cylindrical shape, but the cylindrical label 1 is not opened in a substantially true cylindrical shape when the adherend is mounted.

As shown in FIG. 2, the cylindrical label 1 is normally folded into two flat fold lines 26 and 27 extending in the vertical direction before being attached to the adherend. Further, although not shown in particular, the cylindrical label elongated body that is a precursor of the cylindrical label 1 is also usually folded and stored at two opposing fold lines extending along its longitudinal direction, as in FIG. , Used for transportation and various processing.
The cylindrical label 1 is formed by rounding a film into a cylindrical shape and overlapping and adhering both side ends of the film.

In FIG. 3, an example of the film 2 which comprises the cylindrical label 1 of this invention is shown.
The film 2 includes a base film 21, a laser coloring layer 22, and a design printing layer 23, and further includes an overcoat layer 24 and a background printing layer 25 as necessary.
In this film 2, the laser coloring layer 22 and the design printing layer 23 are provided on the back surface of the transparent base film 21, and the background printing layer 25 and the overcoat layer 24 are formed of the laser coloring layer 22 and the design printing layer 23. These back surfaces are provided so as to cover the back surfaces.
In the illustrated film 2, the laser coloring layer 22 is provided in a partial region of the base film 21, and the design printing layer 23 is provided so as not to overlap the laser coloring layer 22. Since the design printing layer 23 does not overlap the laser coloring layer 22, discoloration of the design printing layer 23 can be prevented when laser light is irradiated. However, the design printing layer 23 may be provided so as to overlap a part or the entire region of the laser coloring layer 22.
The background printing layer 25 is preferably provided on the entire back surface of the laser printing layer 22 and the entire back surface of the design printing layer 23, but the entire back surface of the laser printing layer 22 or a part of the back surface, or design printing. It may be provided on the entire back surface of the layer 23 or a part of the back surface.

Although not particularly illustrated, as described above, the laser coloring layer 22 may be provided on substantially the entire base film 21.
In addition, the layer configuration of the film 2 constituting the cylindrical label 1 of the present invention can be changed as appropriate in consideration of the above-described matters and the prior art.

  For example, in the above, the overcoat layer 24 is provided on the back surface side of the laser coloring layer 22 (that is, the back surface of the overcoat layer 24 constitutes the back surface of the film 2). A film-forming film may be provided on the back surface side of the layer 22 instead of the overcoat layer 24 or on the back surface of the overcoat layer 24 (that is, the back surface of the film-forming film constitutes the back surface of the film 2). ing). As the film-forming film provided on the back surface, a film made of synthetic resin exemplified in the base film can be used. In this case, the film 2 is a laminate film in which the laser coloring layer 22 is sandwiched between two film-forming films (the laser coloring layer 22 is sandwiched between the base film and the film-forming film on the back surface).

As described above, the cylindrical label using the laminate film in which the laser coloring layer is sandwiched between the two film-forming films is less likely to cause fine spots even when laser-printed in a flat state. It is preferable to use the film 2 that does not have a film-forming film on the back side of the laser coloring layer 22 in the sense that the above effect is remarkably exhibited.
In the film-forming film, a plurality of resin components having relatively long molecules are firmly bound together to form a layer, and the layer itself can maintain a sheet shape. Such a film-forming film is presumed to be difficult to generate fine spots because it is difficult to break by impact when laser light is applied to the laser coloring layer.

  On the other hand, the design printing layer, the background printing layer, and the overcoat layer are usually formed by binding a plurality of resin components to each other, but the binding is weaker than that of a film-forming film. This layer is a fragile layer that cannot maintain a sheet shape by itself. For this reason, when the design print layer, the background print layer, or the overcoat layer constitutes the back side of the film (ie, constitutes the innermost layer of the film), when the laser coloring layer is irradiated with laser light It is presumed that fine spots are likely to be generated because it is easily crushed by the impact.

  Therefore, (a) the back surface of the laser coloring layer constitutes the film back surface, and (b) at least one of the design printing layer, the background printing layer, and the overcoat layer is provided on the back surface of the laser coloring layer. In addition, the present invention is implemented using a cylindrical label using a film in which any one of the back surfaces constitutes the film back surface. The films (a) and (b) correspond to films having no film-forming film on the back side of the laser coloring layer.

[Outline of manufacturing cylindrical labels]
The cylindrical label of the present invention is mechanically manufactured as follows, for example, and is attached to an adherend.
Preferably, a desired label (variable display or the like) is obtained at a predetermined position of the laser coloring layer by laser printing before a cylindrical label is obtained from the long cylindrical label below and before it is attached to the adherend. ) Is displayed.

<Process for forming cylindrical label elongated body>
While pulling out the long film in which the laser coloring layer and the design printing layer are formed at predetermined positions, the both side edges along the longitudinal direction are overlapped and bonded to each other, thereby forming a long cylindrical body ( A long cylindrical label).
This long film is conceptually a continuous rectangular film provided with a laser coloring layer and a design printing layer corresponding to one cylindrical label, in the longitudinal direction. In other words, one specific pattern (one cylindrical label) of the laser coloring layer and the design printing layer is repeatedly provided in the longitudinal direction.

The long shape means a shape in which the length in one direction (longitudinal direction) is sufficiently longer than the width direction (short direction), for example, the length in the long direction is the length in the short direction. 10 times or more, preferably 20 times or more.
The formed cylindrical label elongate body is folded into a flat shape, and is once wound around a roll.
In the long cylindrical label at this time, the desired display (standard display, etc.) is displayed on the design print layer, but the laser color layer is not colored (the laser color layer does not display) It is.

<Loading process of long cylindrical label>
This roll is loaded into a labeler (a labeler that may be provided with a perforation device or a folding device).
FIG. 4 is a reference diagram showing an outline from the labeler A to the process of forming the cylindrical label 1 from the long cylindrical label body 10 and the process of attaching it to the adherend 9.
In FIG. 4, the long tubular label 10 drawn out from the roll 81 is illustrated so as to be sent in the downward direction. However, in actual equipment, there are various types such as a right direction, an upward direction, and an oblique direction. May be sent in any direction.
The code | symbol 82 of FIG. 4 shows a pinch roll.

<Perforation process>
The flat cylindrical label long body 10 wound around the roll 81 is pulled out in the longitudinal direction by a transport device (not shown). In addition, the arrow of FIG. 4 shows the delivery direction of a cylindrical label elongate body. On the way to the production line, perforations are formed in the flat cylindrical label elongated body 10 by the perforation engraving device 83 as necessary.
When the perforations are formed, the overlapping inner surfaces of the flat cylindrical label long body 10 may be attached in a pseudo manner, so that the inner surfaces of the long cylindrical label body 10 are once separated from each other. That is, the inner guide 3 (one type of interposed member) is provided on the downstream side of the perforation device 83. The downstream side refers to the delivery side (the side away from the roll 81) of the long cylindrical label 10, and the upstream side refers to the side opposite to the delivery side (the side close to the roll 81).

By inserting the flat cylindrical label long body 10 through the inner guide 3, the inner surfaces of the flat cylindrical label long body 10 are separated from each other, so that the cylindrical label long body 10 can be opened. .
The inner guide 3 is held at a predetermined position on the production line, but the holding mechanism is not particularly limited. For example, the guide unit disclosed in Japanese Patent Laid-Open Nos. 09-58626 and 2010-70201 is provided. Etc. can be used.
However, the perforation is not limited to the case of forming in the perforation processing step, and may be formed in advance at the stage of a long film, for example. For example, in the step of forming the cylindrical label long body, a case where a perforation is formed in a long film and then a cylindrical label long body is formed.

<Folding process>
The long tubular label 10 that has been once opened by the inner guide 3 is sandwiched between pinch rolls 82, folded back into a flat shape, and sent to the downstream side of the line.
In the middle of the process, the tubular label long body 10 is folded back as necessary. That is, since the cylindrical label long body 10 folded into a flat shape is difficult to open in a shape that is easy to cover the adherend 9, a folding process is performed on the cylindrical label long body 10. In the folding process, the flat cylindrical label elongated body 10 is once opened, and is folded into a flat shape at a new folding line so that the folding lines at the time of flattening overlap each other. As a result, four fold lines (the original two fold lines and two new fold lines generated after folding) are formed at substantially equal intervals in the circumferential direction of the long cylindrical label body 10.

The folding process is performed by inserting the flat cylindrical label elongated body 10 through the tetra guide 4 (one type of interposition member).
The function of the tetra guide 4 is disclosed in, for example, Japanese Patent Laid-Open No. 2011-63285. Moreover, although the tetra guide 4 is hold | maintained in the predetermined position of a manufacturing line, the holding mechanism is not specifically limited, For example, the guide unit currently disclosed by Unexamined-Japanese-Patent No. 2010-70201 etc. can be utilized.

<Formation process of cylindrical label>
The long tubular label 10 subjected to the above folding process is folded into a flat shape by two new fold lines, and is sent to the downstream side of the line.
In the middle of the process, the cylindrical label long body 10 is cut by the cutter 84 in accordance with the planned cutting line in the circumferential direction, whereby the flat cylindrical label 1 having a predetermined length is obtained.

<Installation process of cylindrical label>
The obtained flat cylindrical label 1 is opened by an expansion device 85 such as a vacuum or a mandrel, and is put on the adherend 9 in the opened state.
When the cylindrical label 1 is a heat-shrinkable cylindrical label, the cylindrical label 1 is attached to the adherend 9 by releasing the opening by the expansion device 85 and heating it after covering. The On the other hand, when the cylindrical label 1 is a self-expandable cylindrical label, the cylindrical label 1 is attached to the adherend 9 by releasing the opening by the expansion device 85. The obtained labeled adherend is subsequently used for boxing and the like.
The adherend 9 is not particularly limited, and examples include a bottle-type container filled with beverages, a container filled with cosmetics, a container filled with seasonings, foods, and the like.

<Laser printing process>
Laser printing is preferably performed between the loading process of the long cylindrical label body and the mounting process of the cylindrical label.
For example, as shown in FIG. 4, when the flat cylindrical label elongated body 10 is opened by the tetraguide 4 in the folding process, the laser printing apparatus B that emits laser light is used. Laser printing is performed on the long cylindrical label.

[Printing method for cylindrical labels]
The cylindrical label printing method of the present invention collects dust generated inside the long cylindrical label or the cylindrical label when performing laser printing on the long cylindrical label or the cylindrical label. It is characterized by.
That is, the cylindrical label printing method of the present invention is the above-described cylindrical label long body or cylindrical shape while irradiating a laser beam from the outer surface of the cylindrical label long body or the cylindrical label to develop the laser coloring layer. It is characterized by collecting dust generated inside the label.
The description “printing method of cylindrical label” is a description in which “printing method of long cylindrical label or cylindrical label” is omitted.

  When the laser beam is irradiated from the outer surface of the cylindrical label long body or the cylindrical label, the forming material such as the laser coloring layer and the overcoat layer is crushed, and the resulting dust is the cylindrical label long body or the cylindrical shape. Occurs inside the label. According to the printing method of the cylindrical label of the present invention, dust generated inside the cylindrical label long body or the cylindrical label is collected while performing laser printing, so that the dust is the cylindrical label long body or cylinder. Can be prevented from adhering to the inner surface of the label. Therefore, a desired display can be clearly displayed by laser printing.

  In addition, since laser printing is performed on a flat cylindrical label long body or a cylindrical label before mounting on the adherend, the mounting position of the cylindrical label on the adherend is accurate as in the past. Accurate alignment and accurate alignment of the adherend with a label are not required. In addition, since laser printing is performed on the long cylindrical label or the cylindrical label, the time lag is shorter and the laser printing is performed as compared with the conventional case where laser printing is performed on a long film. Thereafter, the cylindrical label can be attached to the adherend with a time difference that does not cause a problem in the contents of the variable display and without the variable display becoming unclear due to external factors.

The display represented by laser printing is not particularly limited, and may be variable display or fixed display.
The laser printing scheduled area where laser printing can be performed is not particularly limited, and when the laser coloring layer is laminated on the entire base film, the entire long cylindrical label or the cylindrical label is laser printed. It can be a planned area. When the laser coloring layer is provided in a partial region of the base film, the region becomes a laser printing scheduled region.
Usually, laser printing is performed in order to represent a variable display such as the expiration date, so that it is preferable that the display does not hide as much as possible the standard display such as the product name represented on the design printing layer, Laser printing is usually performed in a partial area below the cylindrical label.

In the printing method of the cylindrical label of the present invention, laser printing is performed on the cylindrical label long body or the cylindrical label in an open state (not performed on the flat cylindrical label long body or the cylindrical label). Done.
Laser printing is performed in combination with the treatment in one or more processes selected from each process described in [Overview of production of cylindrical label] above after forming a long cylindrical label body. Or you may carry out together with the process in the conventionally well-known process which is not demonstrated in said [Outline | summary of manufacture of a cylindrical label]. Further, in the above [Summary of production of cylindrical label], a laser printing process for performing only laser printing before the cylindrical label is attached to the adherend may be separately provided.

  For example, when performing laser printing on a long cylindrical label body, laser printing may be performed when the long cylindrical body body is opened with an inner guide after forming the perforation in the perforation processing step. Alternatively, in the folding step, laser printing may be performed when the long cylindrical label body is opened with a tetra guide, or from the loading step of the long cylindrical label body to the before the folding step. At any time, independently of the other steps, laser printing may be performed by opening a flat cylindrical label long body using an inner guide or the like.

  For example, when laser printing is performed on a cylindrical label, the laser printing is performed when the flat cylindrical label is opened by the expansion device in the cylindrical label mounting process in the above [Outline of manufacturing cylindrical label]. Alternatively, a flat cylindrical label may be inserted through an interposition member such as an inner guide, and this may be opened to perform laser printing.

  Moreover, the printing method of the cylindrical label of this invention is not limited to the case where it is implemented using a labeler, and a flat cylindrical label long body or a cylindrical label is opened and used without using a labeler. You may implement using the laser printing apparatus which performs laser printing.

At the time of laser printing, a flat cylindrical label long body or a cylindrical label is opened and the inner surfaces thereof are separated from each other, and in this state, from the outer surface of the cylindrical label long body or the cylindrical label to the laser printing scheduled area A laser beam is irradiated on the surface.
When laser printing is performed on a flat cylindrical label elongate body or a laser printing scheduled area of a cylindrical label, dust generated from the inner surface corresponding to that area adheres to the inner surface on the opposite side of the inner surface. However, when laser printing is performed on the long cylindrical label or the cylindrical label in the open state, dust is scattered inside the long cylindrical label or the cylindrical label in the open state. When the scattered dust is reattached to the long cylindrical label or the cylindrical label, it causes fine spots, and a cylindrical label with a beautiful appearance cannot be obtained.

  In the present invention, dust collecting means is provided inside the long cylindrical label or the cylindrical label in an open state, and laser light is irradiated to the laser printing scheduled area in this state. The dust generated inside the long cylindrical label or the cylindrical label is collected at a predetermined location by the dust collecting means. Therefore, it can prevent that dust adheres to the inner surface of a cylindrical label elongate body or a cylindrical label again.

The dust collecting means is not particularly limited, and examples thereof include the following means (1) to (3).
(1) During laser printing, air is sent or sucked in the longitudinal direction from one side of the long cylindrical label or the cylindrical label in an open state, and the cylindrical label is generated by the air flow. Dust that has been put out of the long or cylindrical label is collected.
(2) When dust is charged with static electricity, insert a member having an electrostatic adsorption action inside the long cylindrical label or the cylindrical label in an open state during laser printing, and dust is applied to the member. Adsorb and collect.
(3) A dust accommodating recess is provided in the interposition member used to open the flat tubular label long body or the tubular label, and the interposition member is used for the tubular label long body or the tubular label. Laser printing is performed with the inside interposed.

  An intervening member is preferably used as the dust collecting means because the existing labeler line can be used as it is, it can be carried out relatively inexpensively, and dust can be easily collected.

[Intervening member]
Next, the cylindrical label opening interposition member of the present invention used for laser printing will be described.
In the present invention, the interposed member is used by inserting the flat cylindrical label long body or the cylindrical label so as to separate the inner surfaces of the flat cylindrical label long body or the cylindrical label which are overlapped with each other. It is a member.

The intervening member is usually arranged in the middle of a line for sending a flat cylindrical label long body or a cylindrical label, and the flat cylindrical label long body or cylindrical label sent on the line is an intervening member By passing so as to surround, the flat cylindrical label elongated body has a function of opening.
The interposition member of the present invention is not particularly limited as long as it is configured to exhibit such a basic function. Examples of the interposition member include, but are not limited to, an inner guide and a tetra guide as described in the above [Summary of production of cylindrical label].

<First embodiment of interposed member>
5 to 8 show the interposed member according to the first embodiment.
This interposition member 3a can be used, for example, as an inner guide in the perforation processing step described in [Outline of manufacturing of cylindrical label]. When the interposition member 3a is used as an inner guide for the perforation processing step, the interposition member 3a temporarily separates the inner surfaces of the cylindrical label long body or the cylindrical label adhering in a pseudo manner by the formation of the perforation. The function as the inner guide to be used is also used as the dust collecting means.
The interposing member 3a is not used only in the perforation processing step, and as described above, the interposing member 3a may be used when performing other processing, or laser printing. May be used to do only.

This interposition member 3a has a main body 31a and a dust accommodating recess 32a provided in the main body 31a.
The main body 31a has a first constricted portion 311a that becomes thinner toward the one end side, a central portion 313a that is substantially uniform in thickness, and a second constricted portion that becomes thinner as it goes to the other end side. 312a.

Each of the first constricted portion 311a and the second constricted portion 312a has a very acute roof shape, and any tip (ridge line) is rounded and pointed. One surface and the other surface of the first constricted portion 311a and the second constricted portion 312a are flat surfaces, respectively, and are inclined toward one surface and the other surface of the central portion 313a. The first constricted portion 311a protrudes longer than the second constricted portion 312a. The inclination angle of one surface and the other surface of the first constricted portion 311a (inclination angle with respect to one surface and the other surface of the central portion 313a) is slightly larger than the inclination angle of one surface and the other surface of the second constricted portion 312a (that is, the first constricted portion 311a). The obtuse angle of one surface and the other surface of the first constricted portion 311a is larger than that of the second constricted portion 312a).
The one surface is the upper surface when referring to FIG. 6 (the surface shown when referring to FIG. 5), and the other surface is the lower surface when referring to FIG. (Not shown with reference to FIG. 5).

As shown in FIG. 6, the main body 31a is formed in a substantially boat shape in a side view. One surface and many surfaces of the central portion 313a of the main body 31a are substantially parallel. As shown in FIG. 9, the peripheral length of the central portion 313a of the main body 31a is shorter than the inner peripheral length of the long cylindrical label body. Accordingly, as shown in FIG. 9 and FIG. 10, in the state where the long cylindrical label or the cylindrical label surrounds the main body 31a (the inner surface of the long cylindrical label or the cylindrical label is the The long cylindrical label body can be fed from the first constricted portion 311a to the central portion 313a and from the central portion 313a to the second constricted portion 312a (in a state where it is in contact with or close to one surface and the other surface). .
When the interposition member 3a is disposed on the line, the first constricted portion 311a is generally disposed on the upstream side and the second constricted portion 312a is disposed on the downstream side.

The dust accommodating recess 32a is provided in a portion corresponding to the irradiation of the laser beam. In the example of illustration, the dust accommodating recessed part 32a is provided in the one surface side of the center part 313a of the main body 31a. However, the dust accommodating recess 32a may be provided on one surface side of the first constricted portion 311a or one surface side of the second constricted portion 312a, or from the central portion 313a of the main body 31a to the first constricted portion. 311a and / or the second constricted portion 312a may be provided (both not shown).
The dust accommodating recess 32a is a space defined by the bottom surface 321a of the recess and the peripheral wall surface 322a standing around the bottom surface 321a. The upper edge of the peripheral wall surface 322a is formed on one surface of the central portion 313a of the main body 31a. Thus, an opening 323a is formed. The opening 323a is an entrance into which dust enters the dust accommodating recess 32a. In the illustrated example, the opening area of the opening 323a is substantially the same as the area of the bottom surface 321a.

  The depth of the dust accommodating recess 32a (height of the peripheral wall surface 322a) is not particularly limited, but if it is too small, the inner surface of the cylindrical label long body or the cylindrical label is accumulated with dust. There is a risk of contacting the bottom surface 321a of the dust containing recess 32a. From this viewpoint, the depth of the dust containing recess 32a is preferably 5 mm or more, and more preferably 10 mm or more. The depth of the dust accommodating recess 32a is preferably as large as possible with the thickness of the interposition member 3a as the limit, but is 50 mm, for example, as an example of the upper limit.

The cylindrical label elongated body 10 is inserted outside the interposed member 3a by aligning the laser printing scheduled region so as to pass over the opening 323a of the interposed member 3a. And as shown in FIG.9 and FIG.10, a laser beam is irradiated to the outer surface of the cylindrical label long body 10 corresponding to the opening part 323a of the interposition member 3a by the laser printing apparatus B. FIG. In addition, the arrow of FIG. 10 shows the delivery direction of a cylindrical label elongate body.
By the irradiation of the laser light, dust is generated from the inside of the long cylindrical label body 10 (in the figure, the dust is indicated by dots), and the dust is collected from the opening 323a to the bottom surface 321a of the dust accommodating recess 32a. Accumulate. For this reason, it can prevent dust adhering to the inner surface of the cylindrical label elongate body 10 corresponding to laser beam irradiation, or adhering to the inner surface facing the inner surface.

The interposition member 3a of the first embodiment has a flat bottom surface 321a of the dust accommodating recess 32a. For example, as shown in FIG. 11, the bottom surface 321a of the dust accommodating recess 32a is substantially V-shaped. It may be formed. The dust accommodating recess 32a having such a bottom surface 321a can store more dust away from the opening 323a.
Moreover, as shown in FIG. 12, the bottom surface 321a of the dust accommodating recessed part 32a may be formed in unevenness. The dust accommodating recess 32a having such a bottom surface 321a can also collect more dust away from the opening 323a.

Although not shown in particular, a capturing material for capturing dust may be provided on the surface (the bottom surface 321a or / and the peripheral wall surface 322a) of the dust accommodating recess 32a. Preferably, the dust capturing material is provided on at least a part or all of the bottom surface 321a.
The capturing material is not particularly limited as long as it has a function of easily capturing and not separating dust. Examples of the capturing material include various types of pressure-sensitive adhesives (for example, pressure-sensitive pressure-sensitive adhesives used in pressure-sensitive adhesive tapes), electrostatic adsorbents that electrostatically adsorb dust, and fine holes on the surface. Examples thereof include a porous material, a mesh material such as a nonwoven fabric, and a liquid such as water.
By providing the capture material in the dust storage recess 32a, the dust collected in the dust storage recess 32a is held by the capture material. Therefore, the dust once accumulated in the dust accommodating recess 32 does not scatter from the recess 32a.

<Second Embodiment of Intervening Member>
Next, a second embodiment of the interposition member will be described.
The interposition member according to the second embodiment is similar to the interposition member 3a of the first embodiment, and functions as an inner guide that opens the long inner surfaces of the long cylindrical label or the cylindrical label apart from each other, and dust. It also serves as a collection means.
The interposition member according to the second embodiment can also be used in a perforation processing process, other processing processes, or a laser printing process in which only laser printing is performed, like the interposition member 3a of the first embodiment.

In FIG.13 and FIG.14, the interposition member 3b which concerns on 2nd Embodiment has the main body 31b and the dust storage recessed part 32b for dust storage provided in the main body 31b.
The main body 31b has a first constricted portion 311b that becomes thinner toward the one end side, a central portion 313b that has a substantially uniform thickness, and a second constricted portion that becomes thinner toward the other end side. 312b. The configuration of the main body 31b is the same as that of the first embodiment except that the main body 31b is thicker than the main body 31a of the interposed member 3a of the first embodiment. Therefore, the description of the main body 31b is omitted here.
When the interposition member 3b is arranged on a line, as in the first embodiment, the first constricted portion 311b is usually arranged on the upstream side and the second constricted portion 312b is arranged on the downstream side. Is done.

  The dust accommodating recess 32b is provided in the central portion 313b of the main body 31b. However, the dust accommodating recess 32b may be provided in the first constricted portion 311b or the second constricted portion 312b, or the first constricted portion 311b and / or the second constricted portion from the central portion 313b of the main body 31b. It may be provided over the constricted portion 312b (both not shown).

The dust accommodating concave portion 32b is partitioned from a concave bottom surface 321b and a peripheral wall surface 322b standing around the bottom surface 321b. A ceiling wall 324b having an opening 323b in part is formed at the upper end portion of the peripheral wall surface 322b, and a cavity is formed by the dust accommodating recess 32b and the ceiling wall 324b.
The top wall 324b is provided on the upper side of the dust accommodating recess 32b. The upper side of the dust accommodating recess 32b is covered with a top wall 324b having an opening 323b in part.
The opening 323b communicates with the dust accommodating recess 32b, and the dust is collected in the dust accommodating recess 32b through the opening 323b.

The opening area of the opening 323b is smaller than the maximum area of the cross section at an arbitrary position of the dust accommodating recess 32b and is larger than the area of the laser printing scheduled area.
The depth of the dust containing recess 32b is not particularly limited, but from the viewpoint of accommodating more dust and preventing scattering, the depth is preferably 10 mm or more, and more preferably 15 mm or more. The depth of the dust accommodating recess 32b is preferably as large as possible with the thickness of the interposition member 3b as the limit, but is 50 mm, for example, as an example of the upper limit.

  As shown in FIG. 14, the inner surface of the top wall 324b is inclined such that the area of the cross section of the dust containing recess 32b increases from the opening 323b toward the bottom 321b, and the peripheral wall 322b. And the inner surface of the top wall 324b is also used.

The interposition member 3b of the second embodiment is also used in the same manner as the interposition member 3a of the first embodiment. That is, alignment is performed so that the laser printing scheduled region passes over the opening 323b of the interposed member 3b, and the long cylindrical label body is inserted outside the interposed member 3b. And a laser beam is irradiated with respect to the outer surface of the cylindrical label elongate body corresponding to the opening part 323b of the interposition member 3b.
By the irradiation of the laser beam, dust is generated from the inside of the long cylindrical label body, and the dust is collected and collected from the opening 323b to the bottom surface 321b of the dust containing recess 32b. For this reason, it can prevent dust adhering to the inner surface of the cylindrical label elongate body corresponding to laser beam irradiation, or adhering to the inner surface facing the inner surface.

  Since the interposition member 3b of the second embodiment is covered with a top wall 324b having an opening 323b in part on the upper side of the dust storage recess 32b, the dust collected in the dust storage recess 32b from the opening 323b It can prevent scattering from the recessed part 32b to the cylindrical label elongate body side. In particular, as shown in FIG. 14, the inner surface of the top wall 324 b is an inclined surface, and one end side and the other end side of the dust accommodating recess 32 b (the feeding direction side of the long cylindrical label body and the opposite side thereof). Is narrowed (pointed). For this reason, it is easy for dust to collect at one end part or the other end part of the dust accommodating recess 32b and to accumulate, and thus it is possible to prevent the accumulated dust from scattering from the opening 323b to the outside.

In addition, in the interposition member 3b of the second embodiment, a funnel-shaped guiding structure may be provided in the opening 323b.
For example, as shown in FIGS. 15 and 16, a pair of plate-like inclined walls 325 b and 326 b are provided in the opening 323 b formed in the top wall 324 b so as to be inclined so that the lower end sides approach each other as it goes downward. A gap 327b is left between the lower ends of the inclined walls 325b and 326b. The gap 327b has an elongated band shape and is an opening that communicates with the dust containing recess 32b.
Inclined walls 325b and 326b having a gap 327 between lower ends facing each other are funnel-shaped guiding structures, which are similar to, for example, the structure of a money box.
If it is the interposition member 3b which has such a guidance structure, compared with the interposition member 3b of FIG. 13 and 14, it can prevent more reliably that the dust collected in the dust accommodation recessed part 3b is scattered outside.

Moreover, you may provide the supplementary material which supplements dust in the dust accommodation recessed part 32b of the interposition member 3b of the said 2nd Embodiment.
As the dust supplement material, those exemplified in the first embodiment can be used.

<Third embodiment of the interposed member>
Next, a third embodiment of the interposition member will be described.
This interposed member can be used, for example, as a tetra guide in the folding process described in [Overview of production of cylindrical label]. When this interposition member is used as a tetra guide in the folding process, the interposition member serves both as a function of once separating the inner surfaces of the long cylindrical label body and the dust collecting means.
Note that this interposition member is not used only in the folding processing step, and as described above, this interposition member may be used when other processing is performed, or only laser printing is performed. May be used for

In FIG. 17 thru | or FIG. 20, the interposition member 3c which concerns on 3rd Embodiment has the main body 31c and the dust storage recessed part 32c for dust storage provided in the main body 31c.
The main body 31c has a first constricted portion 311c that decreases in thickness toward the one end, a second constricted portion 312c that decreases in thickness toward the other end, a first constricted portion 311c, and a first constricted portion 311c. A central portion 313c connecting the two constricted portions 312c.
The main body 31c has an octahedral structure in which one side surfaces of two triangular prisms are joined to each other and two opposite sides of the two triangular prisms are twisted by 90 degrees in the joined state. In other words, the main body 31c has an octahedral structure in which the two bottom surfaces of the A-shaped tent in which the triangular prism is laid are joined to each other so that the ridgeline is twisted at 90 degrees.

Each of the first constricted portion 311c and the second constricted portion 312c has a very acute roof shape, and any tip (ridge line) is rounded and pointed. The distal end portion (ridge line) of the first constricted portion 311c and the distal end portion (ridge line) of the second constricted portion 312c are in a positional relationship of 90 degrees twist.
One surface and the other surface of the first constricted portion 311c and the second constricted portion 312c are flat surfaces, respectively, and are inclined toward the central portion 313c.
When the interposition member 3c is arranged on a line, the first constriction 311c is usually arranged on the upstream side and the second constriction 312c is arranged on the downstream side. In addition, when arrange | positioning this interposition member 3c on a line, it arrange | positions normally in the top-and-bottom direction. On the other hand, the inner guides of the first and second embodiments are arranged in a horizontal direction (a direction perpendicular to the vertical direction).

  The dust containing recess 32c is provided from the first narrowed portion 311c to the second narrowed portion 312c of the main body 31c. But the dust accommodating recessed part 32c may be provided in the 1st constriction part 311c or the 2nd constriction part 312c (not shown).

The dust containing recess 32c is partitioned from a bottom surface 321c of a recess and a peripheral wall surface 322c that stands up around the bottom surface 321c. A ceiling wall 324c having an opening 323c in part is formed at the upper end of the peripheral wall surface 322c, and a cavity is formed by the dust accommodating recess 32c and the ceiling wall 324c.
The top wall 324c is provided on the upper side of the dust accommodating recess 32c. The upper side of the dust accommodating recess 32c is covered with a top wall 324c having an opening 323c in part.
The opening 323c communicates with the dust accommodating recess 32c, and the dust is collected in the dust accommodating recess 32c through the opening 323c.

  The opening area of the opening 323c is smaller than the maximum area of the cross section at an arbitrary position of the dust accommodating recess 32c and is larger than the area of the laser printing scheduled area.

The interposition member 3c of the third embodiment is also used in the same manner as the interposition member 3a of the first embodiment. That is, alignment is performed so that the laser printing scheduled region passes over the opening 323c of the interposed member 3c, and the long cylindrical label body is inserted outside the interposed member 3c. And a laser beam is irradiated with respect to the outer surface of the cylindrical label elongate body corresponding to the opening part 323c of the interposition member 3c.
Due to the irradiation of the laser beam, dust is generated from the inside of the long cylindrical label body, and the dust is collected and collected from the opening 323c on the bottom surface 321c of the dust receiving recess 32c (when arranged in the vertical direction). The dust is collected and collected on the peripheral wall surface 322c on the second constricted portion 312c side). For this reason, it can prevent dust adhering to the inner surface of the cylindrical label elongate body corresponding to laser beam irradiation, or adhering to the inner surface facing the inner surface.

  Since the interposition member 3c of the third embodiment is also covered with the top wall 324c having the opening 323c in part on the upper side of the dust accommodating recess 32c, the dust collected in the dust accommodating recess 32c from the opening 323c It can prevent scattering from the recessed part 32c to the cylindrical label elongate body side.

In addition, you may provide the supplementary material which supplements dust in the dust accommodating recessed part 32c of the interposition member 3c of the said 3rd Embodiment. As the dust supplement material, those exemplified in the first embodiment can be used.
Moreover, you may provide the funnel-shaped guidance structure as shown in the said 2nd Embodiment in the opening part 323c of the interposition member 3c of the said 3rd Embodiment.

Furthermore, the air blower which flows dust to one direction may be provided in the dust accommodation recessed part 32c of the interposition member 3c of the said 3rd Embodiment.
Specifically, as shown in FIG. 21, a blower 51 (a small fan or the like) is disposed in the vicinity of the peripheral wall surface 322c of the dust accommodating recess 32c. The blower 51 is provided in the vicinity of the peripheral wall surface 322c on the first constricted portion 311c side and below the opening 323c (below the opening 323c near the tip of the first constricted portion 311c). It is preferable.
By this blower 51, wind flows from the first constricted portion 311c side to the second constricted portion 312c side in the dust accommodating recess 32c. For this reason, the dust that has entered from the opening 323c easily gets on the wind and gathers at the end of the dust-receiving recess 32c, and the accumulated dust can be prevented from scattering from the opening 323c to the outside.

Furthermore, you may provide the supplementary material 52 which supplements dust on the downstream side (2nd constriction part 312c side) of the said wind flow of the dust accommodating recessed part 32c. It is preferable that a plurality of the capturing materials 52 are arranged side by side in the wind flow direction. Examples of the material of the capturing material 52 include those exemplified in the first embodiment, and the capturing material 52 is preferably in the form of a sheet having air permeability. The sheet-like capturing material 52 is preferably arranged so that its sheet surface is substantially orthogonal to the wind flow direction. Examples of the capturing material 52 include a dust adsorption filter such as a nonwoven fabric.
By suspending the trapping material 52 in such a leeward direction, the dust carried by the blower 51 can be reliably held by the trapping material 52 and removed from the space of the dust accommodating recess 32c.

  Further, in order to allow the wind to flow smoothly in one direction in the dust accommodating recess 32c, the vent 53 may be formed in the lee as necessary. For example, a hole 53 that communicates the dust containing recess 32c with the outside may be formed at the tip of the second constricted portion 312c.

Further, as shown in FIG. 21, which is a modified example of the third embodiment, the air blower 51 causes the dust to flow in one direction, the downwind is provided with the capturing material 52, and the vent 53 is provided. The matter selected from the above may be applied to the interposition member 3b of the second embodiment.
In addition, the interposition member of the present invention can also be configured by appropriately combining the various structures shown in the first to third embodiments.

  DESCRIPTION OF SYMBOLS 1 ... Cylindrical label, 3 ... Inner guide, 4 ... Tetra guide, 3a, 3b, 3c ... Interposition member, 32a, 32b, 32c ... Dust accommodating recessed part, 323a, 323b, 323c ... Opening part, 324b, 324c ... Top wall

Claims (5)

A cylindrical label printing method for irradiating and printing a laser beam on a long cylindrical label or a cylindrical label formed into a cylindrical long film having a laser coloring layer,
In the state where the cylindrical label long body or the cylindrical label is opened and the dust collecting means is provided on the inside thereof, laser beam is irradiated from the outer surface of the cylindrical label long body or the cylindrical label to form a laser coloring layer. A method for printing a cylindrical label, characterized in that color is developed.   The dust collecting means is an interposition member that opens the flat cylindrical label long body or cylindrical label through the cylindrical label long body or cylindrical label, and corresponds to laser light irradiation. The printing method of the cylindrical label of Claim 1 which is an interposition member in which the dust accommodating recessed part is formed in the part.   The printing method of the cylindrical label of Claim 2 with which the capture | acquisition material which capture | acquires dust is provided in the dust accommodation recessed part of the said interposed member.   The printing method of the cylindrical label of Claim 2 or 3 with which the upper side of the said dust accommodation recessed part is covered with the top wall which has an opening part in part. An intervening member interposed inside the cylindrical label continuous body or the cylindrical label folded in a flat shape to open it,
An intervening member for opening a cylindrical label, characterized in that a dust storage recess for storing dust generated from the long cylindrical label or the cylindrical label is provided.

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