Adhesive Film Storage Box

Abstract

To provide an adhesive film storage box which enables a user to appropriately pick up an adhesive film during use.SOLUTION: An adhesive film storage box 10 is for storing a wound body 11 on which an adhesive film F having adhesiveness is wound. The adhesive film storage box 10 comprises: a body 20 having at least a front plate 30, a bottom plate 31, a rear plate 32, and a side plate 34, and opened on an upper surface; and a lid 21 capable of opening / closing the opening on the upper surface of the body 20. A tack force adjustment part 120 is provided which is configured such that the front plate 30 satisfies L>T×6, when loop stiffness of the adhesive film F is defined as L (mN / 25 mm), and a tack force between the adhesive film F and a part in contact with the pulled-out adhesive film F in the front plate 30 is defined as T (N / 300 mm2).SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present application relates to an adhesive film storage box for storing a wound body formed by winding a highly adhesive adhesive film such as an infection prevention film, and an adhesive film storage device in which the wound body is stored in the adhesive film storage box.

Background Art

[0002] For example, in a medical field, a doctor may input patient information into a personal computer to create a medical record or the like while examining and treating a patient. At this time, the hand that has touched the patient may also touch the keyboard of the personal computer. If the patient's body fluid or the like adheres to the keyboard by any chance, there is a concern about infection among medical staff such as doctors and nurses, which is not preferable.

[0003]

[0004] In order for medical staff to easily use an adhesive film such as the above-described infection prevention film, a storage box for an adhesive film has been developed that stores the adhesive film and can pull out and cut the adhesive film to a desired length when in use (see Patent Document 1).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] ​However, after the film is cut and the lid is opened, a very large force is required to lift up again the adhesive film that is sandwiched between the covering piece and the front plate and stuck to the front plate of the storage box. As a result, there may be a problem such as poor lifting, where the adhesive film cannot be properly lifted up.

[0007] Also, when the adhesive film is stuck to the box when pulling the adhesive film out of the box, it is conceivable that when the user lifts up the adhesive film, the film end face is peeled off with a sharp blade or the like. However, when performing such an operation, the adhesive film may accidentally tear.

[0008] The present application has been made in view of such points, and an object thereof is to provide an adhesive film storage box and an adhesive film storage device that allow a user to properly lift up the adhesive film during use.

Means for Solving the Problems

[0009] As a result of intensive research, the present inventor has found that the above problems are solved by satisfying (loop stiffness L of the adhesive film) > (tack force between the adhesive film and the portion of the front plate that contacts the pulled-out adhesive film × 6), and has completed the present invention. That is, aspects of the present invention include the following.

[0010] (1) An adhesive film storage box for storing a wound body around which an adhesive film is wound, comprising at least a front plate, a bottom plate, a rear plate, and side plates, a main body portion having an open upper surface, and a lid portion capable of opening and closing the opening of the upper surface of the main body portion, where the loop stiffness of the adhesive film is L (mN / 25 mm), and the tack force between the adhesive film and the portion of the front plate that contacts the pulled-out adhesive film is T (N / 300 mm 2 ), and the front plate is provided with a tack force adjustment portion configured to satisfy L>T×6. (2) The adhesive film storage box according to (1), wherein the tack force adjustment portion is configured to satisfy L>T×12. (3) The tack force adjustment part is provided on a part or all of the front surface of the front plate, and the adhesive film storage box according to (1) or (2). (4) The adhesive film has adhesiveness of 0.01 N / 25 mm or more, and the adhesive film storage box according to any one of (1) to (3). (5) An adhesive film storage device including the adhesive film storage box according to any one of (1) to (4) and a winding body stored in the adhesive film storage box. (6) The adhesive film storage device according to (5), wherein the drawn adhesive film is curled convexly on the front plate side or convexly on the opposite side of the front plate.

Effect of the Invention

[0011] According to the present invention, it is possible to provide an adhesive film storage box and an adhesive film storage device that allow a user to appropriately pick up the adhesive film during use.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

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Figure 8

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Figure 10

Figure 11

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Figure 16

Mode for Carrying Out the Invention

[0013] Embodiments of the present invention will be specifically described below. Note that the following embodiments are examples for explaining the present invention, and the present invention is not limited to only those embodiments. The same elements are denoted by the same reference numerals, and redundant explanations are omitted. In the drawings, the positional relationships such as up, down, left, and right are based on the positional relationships shown in the drawings unless otherwise specified. Furthermore, the dimensional ratios in the drawings are not limited to the illustrated ratios.

[0014] FIG. 1 is a perspective view showing an example of an adhesive film storage device 1 according to the present embodiment. FIG. 2 is a perspective view of the adhesive film storage device 1 in an opened state.

[0015] The adhesive film storage device 1 has an adhesive film storage box 10 and a winding body 11 of the adhesive film F.

[0016] <Configuration of Adhesive Film Storage Box> The adhesive film storage box 10 has an overall rectangular parallelepiped shape, for example. As shown in FIGS. 3 and 4, the adhesive film storage box 10 has a main body portion 20 and a lid portion 21. The main body portion 20 has, for example, a front plate 30, a bottom plate 31, a rear plate 32, front plate side pieces 33, side plates 34, extension pieces 35, rear plate side pieces 36, and the like. The front plate 30 includes a folded-back back plate 37 having an inner surface of the front plate 30 and an outer surface plate 38 having an outer surface of the front plate 30. The lid portion 21 has, for example, a top plate 40, a covering piece 41, top plate side pieces 42, covering side pieces 43, an opening piece 44, and the like.

[0017] As shown in FIG. 3, the main body portion 20 is formed in a rectangular parallelepiped shape with an open top surface. The front plate 30, the bottom plate 31, the rear plate 32, and the side plates 34 are each formed in a square shape and constitute five respective faces of the main body portion 20.

[0018] As shown in FIG. 4, the rear plate side pieces 36 are connected to both ends of the rear plate 32 in the left-right direction (longitudinal direction) (direction A in FIG. 4). The front plate side pieces 33 are connected to both ends of the front plate 30 in the left-right direction. The folded-back back plate 37 is connected to one end of the outer surface plate 38 of the front plate 30 in the width direction (shortitudinal direction) (direction B in FIG. 4). As shown in FIG. 3, the rear plate side pieces 36 are folded back toward the side plate 34 side, cover the outer surface of the side plate 34, and are adhered to the outer surface of the side plate 34. The front plate side pieces 33 are folded back toward the side plate 34 side and are interposed between the rear plate side pieces 36 and the side plate 34, and are adhered to the outer surface of the side plate 34. The folded-back back plate 37 is folded back to the back surface side of the front plate 30 and is adhered to the back surface of the outer surface plate 38 of the front plate 30. The folded-back back plate 37 may or may not be present.

[0019] As shown in FIG. 4, the extension pieces 35 are formed in a substantially rectangular plate shape and are connected to the outer ends in the longitudinal direction of each of the side plates 34 on both sides. As shown in FIGS. 3, 5, and 6, the extension pieces 35 are folded into the interior of the main body portion 20 from the upper part of the side plates 34 and extend toward the center side of the main body portion 20.

[0020] As shown in FIGS. 2 and 6, the extending piece 35 extends from the upper ends of the respective side plates 34 to the inside of the core tube 100 of the winding body 11 of the main body 20, and can push the winding body 11 from both ends toward the center. When assembling the adhesive film storage device 1, as shown in FIG. 3, by storing the winding body 11 in the main body 20 from above, the extending piece 35 enters the inside of the core tube 100 of the winding body 11.

[0021] As shown in FIG. 5, a protruding portion 60 protruding to the outside of the side plate 34 is formed at the center of the upper end of each side plate 34. The protruding portion 60 is formed by forming a cut 61 in the upper part of the side plate 34 and raising the inner region of the cut 61 as shown in FIG. 4. A dotted cut line 62 is formed at the portion that becomes the base end (upper end of the side plate 34) of the protruding portion 60, and the protruding portion 60 is bent outward. With such a configuration, the protruding portion 60 abuts against the inner surface of the lid portion 21 when the opening of the main body 20 is closed as shown in FIG. 6.

[0022] As shown in FIG. 5, a folding portion 70 protruding into the main body 20 is formed at the center of each side plate 34. The folding portion 70 is formed, for example, in a downwardly convex tongue shape (substantially semicircular shape), and a folding line 71 is formed at the upper end. The folding portion 70 is folded into the core tube 100 of the winding body 11, and the winding body 11 is held by this folding portion 70. As a result, it is possible to prevent the winding body 11 from jumping out of the main body 20. When the folding portion 70 is folded, an opening 72 is formed in the side plate 34, but this opening 72 is closed by the rear plate side piece 36 or the front plate side piece 33.

[0023] As shown in FIGS. 3 to 5, the rear plate 32 and the side plates 34 are formed to have approximately the same height, and the front plate 30 is formed lower than the rear plate 32 and the side plates 34. The front plate 30 is formed in a rectangular plate shape with a constant height along the longitudinal direction of the adhesive film storage box 10. The front plate 30 has a height H, for example, 50% to 90% of the outer diameter R2 of the core tube 100 of the winding body 11, preferably 55 to 85%, and more preferably 60 to 80% as shown in FIG. 7. Also, the height H of the front plate 30 may be less than or equal to half of the height of the rear plate 32 and the side plates 34. Further, the vertical width of the opening at the front of the main body 20 caused by the low height of the front plate 30 may be more than half of the rear plate 32 and the side plates 34. As shown in FIG. 3, a cut that curves downwardly convex may be formed at the center of the front plate 30, and thereby a knob piece 110 may be formed. The knob piece 110 has a lower part protruding forward and holds the tip of the adhesive film F.

[0024] As shown in FIG. 7, the top plate 40 of the lid portion 21 extends forward from the upper edge portion of the rear plate 32 and covers the upper surface of the main body portion 20. The covering piece 41 extends from the front edge portion of the top plate 40 toward the front surface (front plate 30) side. The tip of the covering piece 41 overlaps at least a part of the front plate 30. For example, on the back side of the tip of the covering piece 41, a saw blade-shaped cutting blade 90 as a cutting portion for cutting the adhesive film F drawn out from the winding body 11 in the main body portion 20 is provided as shown in FIGS. 2 and 3.

[0025] Before the adhesive film storage device 1 is used as shown in FIG. 1, the adhesive film storage box 10 is sealed by a sealing piece 44 connected to the tip of the covering piece 41 of the lid portion 21. The sealing piece 44 is located on the front surface of the front plate 30 of the main body portion 20 and is formed in a strip shape along the longitudinal direction of the adhesive film storage box 10. The sealing piece 44 is connected to the tip of the covering piece 41 so as to be cuttable via a cut line 91 and is adhered to a plurality of locations on the surface of the front plate 30. When opening the adhesive film storage box 10, the lid portion 21 can be opened by cutting the sealing piece 44 along the longitudinal direction of the box as shown in FIG. 8.

[0026] <Tack force adjustment part> As shown in FIG. 4, the front plate 30 has a tack force adjustment portion 120 (the hatched area in FIG. 4). The tack force adjustment portion 120 sets the loop stiffness of the adhesive film F to L (mN / 25 mm), and the tack force between the adhesive film F and the portion of the front plate 30 that contacts the drawn adhesive film F is T (N / 300 mm 2 ). It is configured to satisfy L>T×6. The tack force adjustment portion 120 is preferably configured to satisfy L>T×12. By configuring in this way, after the film is cut, the lid portion 21 is opened, and it becomes easier to pick up again the adhesive film F sandwiched between the cover piece 41 and the front plate 30 and sticking to the front plate 30. Also, the tack force adjustment portion 120 is preferably configured to satisfy T×120>L. By configuring in this way, when cutting the film, the lid portion 21 is closed and the adhesive film F is sandwiched between the front plate 30 of the adhesive film storage box 10 and the cover piece 41, so that the adhesive film F is likely to stick to the front plate 30. As a result, when cutting the adhesive film F, the adhesive film F is less likely to shift, and stable cutting becomes possible. Also, since the adhesive film F sticks to the front plate 30 for a predetermined time after cutting the adhesive film F, even if the lid portion 21 is opened immediately after cutting, it is suppressed that the tip of the adhesive film F is wound back into the box by the wind pressure.

[0027] The tack force T represents the force required to separate the front plate 30 and the adhesive film F. The tack force T was measured as follows. The tack force T was measured using a tackiness measurement unit in a static and dynamic friction measuring machine (TL201Tt) manufactured by Trinity Lab. First, an annular cell ring with a diameter of 50 mm is prepared. The adhesive film F (a wound product) is attached to the outer peripheral surface of the cell ring (a cylindrical body) with the side surface that contacts the front plate 30 during use facing outward so that there are no wrinkles. Next, the front plate 30 (a sample of the same container piece as the front plate) is cut out into a circular shape with a diameter of 19.5 mm and attached to the tip of a circular disk contactor with a diameter of 20 mm with the surface that contacts the adhesive film F facing outward. The distance between the disk contactor and the adhesive film F is adjusted in advance so that the pushing load becomes 500 ± 20 gf. The disk contactor pushes into the center of the adhesive film F of the cell ring and then returns under the conditions of a moving distance of 10 mm, a moving speed of 10 mm / sec, a repeat mode, and a reciprocating number of 1 time. The maximum load in the load cell tension direction during the return operation at this time is measured as the data of the tack force T. This measurement is performed in an atmosphere of 23 ± 1°C and 50 ± 5% RH. The maximum load in the load cell tension direction during the return of this operation is measured 5 times, and the average value is taken as the tack force T (between the adhesive film F and the portion of the front plate 30 that contacts the pulled-out adhesive film F).

[0028] The tack force T is 0.7 N / 300 mm 2 More preferably, it is 0.6 N / 300 mm or less as follows. By configuring in this way, it becomes easier to pick up from the box surface. Also, the tack force T is 0.01 N / 300 mm 2 or more. More preferably, it is 0.03 N / 300 mm or more as follows. By configuring in this way, the attachment to the keyboard or touch panel becomes more stable and easier. 2 or more. More preferably, it is 0.03 N / 300 mm or more as follows. By configuring in this way, the attachment to the keyboard or touch panel becomes more stable and easier. 2 or more. By configuring in this way, the attachment to the keyboard or touch panel becomes more stable and easier.

[0029] Loop stiffness L represents the stress when the adhesive film F is bent into a loop with a circumference of 50 mm and compressed in the diameter direction of the loop. The loop stiffness L was measured as follows. The loop stiffness L was measured using a loop stiffness tester manufactured by Toyo Seiki. First, the adhesive film F (a sample of the wound material) is cut into a strip shape so that the dimension in the direction parallel to the pulling direction (MD direction) is 100 mm and the dimension in the direction perpendicular to the MD direction (TD direction) is 25 mm. Next, the strip-shaped adhesive film F is set in the loop stiffness tester so that the surface in contact with the front plate 30 during use is the inner side of the loop. The loop stiffness tester pushes in the approximate center of the loop of the adhesive film F under the conditions of a loop circumference of 50 mm, a pushing speed of 5 mm / sec, and a pushing amount of 10 mm, and the maximum value of the load at this time is measured as the data of the loop stiffness L. This measurement is performed in an atmosphere of 23 ± 1°C and 50 ± 5% RH. The maximum value of this load is measured 5 times, and the average value is taken as the loop stiffness L. Usually, the loop stiffness L is measured with a single loop-shaped adhesive film F, but when the value of the loop stiffness L per sheet is below the measurement lower limit, multiple loop-shaped adhesive films F are stacked and measured, and the value obtained by dividing the measured value by the number of stacked sheets is taken as the measured value of the adhesive film F. When the adhesiveness and adhesion of the adhesive film F hinder loop formation, the adhesive film F is thinly coated with talc (manufactured by Kanto Chemical Co., Ltd.) on its adhesive surface and adhesion surface and then measured.

[0030] The loop stiffness L is 10 mN / 25 mm or less, more preferably 6 mN / 25 mm or less. By configuring it in this way, it is easy to follow the curved portions of the keyboard and touch panel. Also, the loop stiffness L is 0.3 mN / 25 mm or more, more preferably 1.0 mN / 25 mm or more. By configuring it in this way, it becomes easy to pick up from the surface of the box.

[0031] The tack force adjustment part 120 is formed on the entire surface (the hatched area in FIG. 4) of the front surface of the front plate 30 (the front surface of the outer side plate 38). The tack force adjustment part 120 is formed, for example, by performing surface treatment or uneven processing on the front plate 30. The surface treatment includes applying a silicone coat or varnish to the front plate 30. The uneven processing includes embossing or ruling on the front plate 30. The tack force adjustment part 120 may be formed by either surface treatment or uneven processing, or may be formed by both surface treatment and uneven processing.

[0032] For example, when the tack force adjustment part 120 is formed by applying varnish, the tack force T can be adjusted by film formation conditions such as the UV irradiation amount and drying speed of the varnish application part, the plate depth of the varnish application part, the pattern of the varnish application part, and the adjustment of the varnish components.

[0033] The varnish used for the varnish application part is an active energy ray curable resin composition that radical polymerizes and cures by active energy rays such as ultraviolet rays and electron beams, and contains an active energy ray curable resin. The active energy ray curable resin contains a compound having an ethylenically unsaturated double bond. Hereinafter, an ultraviolet curable resin composition and an ultraviolet curable resin that radical polymerize and cure by ultraviolet irradiation will be described.

[0034] The ultraviolet curable resin consists of an oligomer or a monomer, or an oligomer and a monomer.

[0035] The oligomer imparts resistance and flexibility to the varnish coating layer, and examples include urethane acrylate, polyester acrylate, acrylic acrylate, and epoxy acrylate having a (meth) acrylate group.

[0036] The monomer is added for the purpose of improving the physical properties of the varnish coating layer and adjusting the viscosity of the ultraviolet curable resin composition, and examples include monofunctional, difunctional, and polyfunctional monomers having a (meth) acrylate group.

[0037] Examples of monofunctional monomers include 2-(2-ethoxyethoxy)ethyl acrylate, stearyl acrylate, tetrahydrofurfuryl acrylate, lauryl acrylate, 2-phenoxyethyl acrylate, indecyl acrylate, isooctyl acrylate, tridecyl acrylate, caprolactone acrylate, 4-hydroxybutyl acrylate, ethoxylated nonylphenol acrylate, propoxylated nonylphenol acrylate, phenoxyethyl acrylate, phenoxydiethylene acrylate, ethylene oxide-modified nonylphenyl acrylate, methoxytriethylene glycol acrylate, ethylene oxide 2-ethylhexyl acrylate, isobornyl acrylate, dipropylene glycol acrylate, and their methacrylate monomers.

[0038] Examples of difunctional monomers include 1,3-butanediol diacrylate, 1,4-butanediol diacrylate, polyethylene glycol diacrylate, polypropylene glycol diacrylate, neopentyl glycol diacrylate, propoxylated neopentyl glycol diacrylate, ethoxylated neopentyl glycol diacrylate, hydroxypivalic acid neopentyl glycol diacrylate, (hydrogenated) bisphenol A diacrylate, (hydrogenated) ethylene oxide-modified bisphenol A diacrylate, (hydrogenated) propylene glycol-modified bisphenol A diacrylate, 1,6-hexanediol diacrylate, 2-ethyl,2-butyl-propanediol diacrylate, 1,9-nonanediol diacrylate, and their methacrylate monomers.

[0039] Examples of polyfunctional monomers include tris(2-hydroxyethyl)isocyanurate triacrylate, ethylene oxide-modified trimethylolpropane triacrylate, propylene oxide-modified trimethylolpropane triacrylate, propylene oxide-modified glyceryl triacrylate, pentaerythritol triacrylate, trimethylolpropane acrylate, ethylene oxide-modified trimethylolpropane acrylate, propylene oxide-modified trimethylolpropane acrylate, tris(acryloxyethyl)isocyanurate, pentaerythritol tetraacrylate, ditrimethylolpropane tetraacrylate, dipentaerythritol hydroxypentaacrylate, ethoxylated pentaerythritol tetraacrylate, pentaacrylate ester, dipentaerythritol hexaacrylate, and their methacrylate monomers.

[0040] In terms of film physical properties, it is preferable that in the ultraviolet curable resin, the oligomer is 0 to 80% by weight and the monomer is 20 to 100% by weight.

[0041] When crosslinking a radically polymerizable crosslinking component with ultraviolet light, acetophenones, benzophenones, thioxanthones, aromatic diazonium salts, metallocenes, etc. can be used as photoinitiators. It is also possible to use a polymerization accelerator in combination, and examples of the polymerization accelerator include amines and phosphines.

[0042] Examples of the varnish applied to the varnish coating part include those that form an uneven shape on the coating film surface by adding a filler with a certain particle size at a certain ratio. Thereby, the tack force can be made appropriate.

[0043] In addition, as the varnish, those using a polysiloxane containing a silanol group at the terminal, called a condensation type, as the base polymer, blending polymethylhydrogen siloxane as a crosslinking agent, and performing a condensation reaction in the presence of an organotin acylate catalyst; those using a polysiloxane containing a vinyl group, called an addition type, as the base polymer, blending polymethylhydrogen siloxane as a crosslinking agent, and reacting in the presence of a platinum catalyst; or those using a trifunctional or tetrafunctional silanol called a silicone resin to generate a three-dimensional network structure by condensation are also preferably used.

[0044] (UV curing method) As a method for curing a UV-curable resin composition by UV irradiation, a high-pressure mercury lamp, an ultra-high-pressure mercury lamp, a carbon arc lamp, a metal halide lamp, a xenon lamp, a chemical lamp, an electrodeless discharge lamp, an LED, etc. that emit light in the wavelength range of 150 to 450 nm can be used, and irradiation can be performed at 30 to 5000 mJ / cm2, preferably 100 to 1000 mJ / cm2. After UV irradiation, it is also possible to completely cure by heating the UV-curable resin composition as necessary. The film thickness (film thickness after curing) when applying the UV-curable resin composition is usually preferably 1 to 80 μm, more preferably 3 to 60 μm, and particularly preferably 5 to 50 μm. If the film thickness is in the range of 1 to 80 μm, there is no curing inhibition, the UV irradiation time can be shortened, and the productivity is good. Also, from the viewpoint of enhancing the smoothness and glossiness of the coating film surface, it is preferable to adjust the coating conditions so that the film thickness when applying the UV-curable resin composition is 10 μm or more.

[0045] When the tack force adjustment part 120 is formed by concavo-convex processing, the tack force T can be adjusted by adjusting the height of the convex part of the emboss, the depth of the convex part, the dimensions of the emboss, the density, etc. Each convex part has a step of 0.05 mm or more, preferably 0.1 mm or more and 0.3 mm or less. The diameter of each convex part 130 is 0.5 mm or more and 10 mm or less, preferably 1 mm or more and 8 mm or less, more preferably 2 mm or more and 6 mm or less. If the diameter of the convex part 130 is 0.5 mm or more, the grid cracking on the paper surface is less likely to occur, and the step of the convex part 130 can be stably produced. If the diameter of the convex part 130 is 10 mm or less, the contact area with the adhesive film F can be efficiently reduced. Also, the interval between adjacent convex parts 130 is preferably 2 mm or more and 6 mm or less, more preferably 3 mm or more and 5 mm or less. If the interval of the convex parts 130 is 2 mm or more, the grid cracking on the paper surface is less likely to occur, and if it is 6 mm or less, the tack force can be reduced.

[0046] Examples of the base paper constituting the adhesive film storage box 10 include cardboard, coated cardboard, corrugated cardboard, etc., but are not limited thereto, and papers known in the art can be appropriately selected and used.

[0047] <Winding body> As shown in FIG. 3, the winding body 11 is constituted by winding a long adhesive film F around a cylindrical paper core tube 100.

[0048] The winding body 11 has, for example, a longitudinal width of 100 mm or more, and the diameter of the core tube 100 is about 25 mm to 40 mm.

[0049] The wound body 11 may have the same length as the core tube 100 in the longitudinal direction A of the adhesive film F and the end faces of the core tube 100 and the adhesive film F may be aligned, or the length of the core tube 100 in the longitudinal direction A may be longer than the length in the width direction (TD direction A) of the adhesive film F and the end faces of the core tube 100 and the adhesive film F may be offset. The former is, for example, the case when the adhesive film F is wound around a sufficiently long core tube 100 and then the core tube 100 is cut to produce a wound body 11 of a predetermined length, and the latter is, for example, the case when the adhesive film F is wound around a core tube 100 previously cut to a predetermined length to produce the wound body 11.

[0050] <Adhesive film> The adhesive film F is an adhesive film such as an infection prevention film. The infection prevention film refers to a film that prevents the adhesion of bacteria, viruses, blood, vomit, and other body fluids and prevents cross-infection among medical staff in various inspection devices having an electronic medical record keyboard or an operation panel that multiple medical staff come into contact with in a hospital.

[0051] The adhesive film F has an adhesiveness such that the peel adhesion force (referring to JIS Z0237:2009, peel adhesion force to a stainless steel test plate, peel angle of 180 degrees, test temperature of 23 ± 1°C, humidity of 50 ± 5%) is 0.01 N / 25 mm or more and 1.5 N / 25 mm or less. The adhesive film F may have an adhesiveness of 0.03 N / 25 mm or more and 1.0 N / 25 mm or less, more preferably 0.1 N / 25 mm or more and 0.5 N / 25 mm or less. When the back surfaces of the adhesive films have adhesiveness, the value measured after thinly applying talc (manufactured by Kanto Chemical Co., Inc.) to the back surface is taken as the adhesiveness of the adhesive film. The lower limit of the adhesiveness of the adhesive film F is preferably 0.03 N / 25 mm or more, more preferably 0.1 N / 25 mm or more. By configuring in this way, it is easy to attach to a keyboard or a touch panel. Also, the upper limit of the adhesiveness of the adhesive film F is preferably 1.0 N / 25 mm or less, more preferably 0.5 N / 25 mm or less. By configuring in this way, it is difficult to damage the surface of the keyboard or the touch panel, and it is easy to suppress the film F from tearing when peeling off the adhesive film F.

[0052] The loop tack L of the adhesive film F is preferably 0.3 mN / 25 mm or more and 10 mN / 25 mm or less. The value of the loop tack L can be adjusted by adjusting the rigidity of the base film of the adhesive film F, the thickness of the base film, and the thickness of the adhesive layer when there is an adhesive layer.

[0053] The adhesive film F preferably contains an adhesive layer at least in part. The adhesive used to form the adhesive layer is not particularly limited, and examples thereof include acrylic adhesives, rubber adhesives, silicone adhesives, and urethane adhesives. Among them, acrylic adhesives and urethane adhesives are preferable, and acrylic adhesives are particularly preferable.

[0054] In the case of an acrylic adhesive, a comonomer can be added to the main monomer to adjust the cohesive force, or a functional group-containing monomer can be added to provide crosslinking points to adjust the hardness of the adhesive and develop the desired adhesive force. The main monomer is not particularly limited, and examples thereof include various (meth)acrylic acid alkyls such as methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate, and 2-ethylhexyl (meth)acrylate, and these can be used alone or in combination. The comonomer is not particularly limited, and examples thereof include vinyl acetate, acrylonitrile, acrylamide, styrene, methyl methacrylate, and methyl acrylate. The functional group-containing monomer is not particularly limited, and examples thereof include acrylic acid, hydroxyethyl acrylate, acrylamide, and glycidyl methacrylate. Furthermore, tackifiers such as rosin, terpenes, aliphatic and aromatic synthetic resins, etc. can be added to adjust the adhesive force. Other additives such as stabilizers, antioxidants, light stabilizers, and ultraviolet absorbers may also be added to the adhesive.

[0055] Also, the adhesive film F includes a base film. The main component of the base film is not particularly limited.

[0056] The base film in this embodiment preferably contains a vinylidene chloride copolymer as a main component. It preferably satisfies 75 to 96% by mass of vinylidene chloride monomer units, and contains 100 parts by mass of the vinylidene chloride copolymer and 1 to 20 parts by mass of a mixture of fatty acid esters and an epoxidized compound. Further, the mixture of fatty acid esters and an epoxidized compound is more preferably 1 to 15 parts by mass, and even more preferably 1 to 10 parts by mass, based on 100 parts by mass of the above vinylidene chloride copolymer.

[0057] In addition, the base film in this embodiment may contain a resin other than the vinylidene chloride copolymer, but the resin contained in the base film is preferably composed of a vinylidene chloride copolymer.

[0058] The thickness of the base film in this embodiment is preferably 5 to 45 μm, more preferably 10 to 30 μm, and even more preferably 15 to 30 μm, from the viewpoints of wetting spreadability, and the operability and durability of personal computers and medical devices.

[0059] In addition, for the base film in this embodiment, the 2% secant modulus in the flow direction (MD direction) and the 2% secant modulus in the width direction (TD direction) are each preferably 190 to 400 MPa, and the tensile elongations in the flow direction (MD direction) and the width direction (TD direction) each preferably satisfy 80 to 150%.

[0060] For the pressure-sensitive adhesive film of this embodiment, since the 2% secant modulus of the base film is 190 to 400 MPa, the film is less likely to stretch and tends not to break. For the pressure-sensitive adhesive film of this embodiment, since the tensile elongation of the base film is 80 to 150%, the film is less likely to stretch and tends not to break.

[0061] The base film used in this embodiment preferably has a 2% secant modulus in the machine direction (MD direction) of 190 to 350 MPa, more preferably 200 to 300 MPa. Further, the base film used in this embodiment preferably has a 2% secant modulus in the transverse direction (TD direction) of 190 to 350 MPa, more preferably 190 to 300 MPa.

[0062] Furthermore, the base film used in this embodiment preferably has a tensile elongation in the machine direction (MD direction) of 90 to 140%, more preferably 90 to 130%. Still further, the base film used in this embodiment preferably has a tensile elongation in the transverse direction (TD direction) of 80 to 140%, more preferably 90 to 130%.

[0063] When using the adhesive film storage device 1 configured as described above, first, as shown in FIG. 8, the opening piece 44 is cut off and the adhesive film storage box 10 is opened. Next, the adhesive film F of the winding body 11 is pulled out to the front side of the adhesive film storage box 10. At this time, as shown in FIG. 7, the pulled-out adhesive film F is curled so as to be convex toward the front plate 30 side. Then, with the lid portion 21 closed, for example, when the adhesive film F is pulled upward with respect to the adhesive film storage box 10, the adhesive film F is cut to a predetermined length by the cutting blade 90.

[0064] Examples of the method for forming the adhesive film F that curls convexly toward the front plate 30 side include performing a heat setting treatment only on the surface of the adhesive film F or the base film opposite to the side in contact with the front plate 30, and forming the adhesive layer at a temperature higher than the processing temperature during the formation of the base film. Examples of the method for forming the adhesive film F that curls convexly toward the side opposite to the front plate 30 include performing a heat setting treatment only on the surface of the adhesive film F or the base film in contact with the front plate 30 side.

[0065] After cutting, the adhesive film F adheres to the front surface of the front plate 30 once as shown in FIG. 9. As an example, after a predetermined time of 1 second or more has elapsed, the adhesive film F naturally peels off from the front plate 30 as shown in FIG. 10 and curls convexly, for example, on the front plate 30 side.

[0066] According to the present embodiment, the front plate 30 of the adhesive film storage box 10 is provided with a tack force adjustment unit 120 configured to satisfy the loop stiffness L of the adhesive film F > tack force T × 6. By doing so, since the peeling force between the adhesive film F and the front plate 30 is lower than the bending rigidity of the adhesive film F, the adhesive film F naturally lifts off from the front plate 30 after adhering to the front plate 30. As a result, during use, the adhesive film F and the front plate 30 do not stick together, and the user can appropriately pick up the adhesive film F.

[0067] The tack force adjustment unit 120 is configured to satisfy L > T × 12, so that the peeling force between the adhesive film F and the front plate 30 is further lower than the bending rigidity of the adhesive film F. As a result, during use, the adhesive film F and the front plate 30 do not stick together more surely, and the user can appropriately pick up the adhesive film F.

[0068] The tack force adjustment unit 120 is provided on the entire front surface of the front plate 30. As a result, no matter where the adhesive film F adheres to the front plate 30, it naturally peels off from the front plate 30. As a result, during use, it is more reliably suppressed that the adhesive film F and the front plate 30 stick together, and the user can appropriately pick up the adhesive film F.

[0069] Since the drawn-out adhesive film F curls convexly on the front plate 30 side, the adhesive film F is easily peeled off from the front plate 30, and it is also easier for the user to pick up the adhesive film F. Note that the drawn-out adhesive film F may curl convexly on the opposite side of the front plate 30. The drawn-out adhesive film F may not curl.

[0070] The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that those skilled in the art can conceive of various modification examples or correction examples within the scope of the idea described in the claims, and it is naturally understood that those also belong to the technical scope of the present invention.

[0071] For example, in the above embodiment, the tack force adjustment unit 120 may be provided on a part of the front surface of the front plate 30. The tack force adjustment unit 120 may be provided in a rectangular region of a part of the front surface of the front plate 30. The rectangular region may have the same vertical width as the height of the front plate 30, or may have a vertical width shorter than the height of the front plate 30. The rectangular region may have the same horizontal width as the length in the longitudinal direction of the front plate 30, or may have a horizontal width shorter than the length in the longitudinal direction of the front plate 30. The tack force adjustment unit 120 is not limited to a rectangular shape and may be provided in a circular region. The circular region may be provided at a plurality of locations on the front plate 30. The tack force adjustment unit 120 may be provided on the back surface side of the front plate 30. Even when provided on the back surface of the tack force adjustment unit 120, as described above, it may be provided in a rectangular region, a circular region, or the like.

[0072] The shape of the front plate 30 is not limited to that of the above embodiment. For example, as shown in FIGS. 11 and 12, the front plate 30 may have a height that varies along the longitudinal direction A. The front plate 30 may have a first region 130a near the center, a second region 130b on both sides of the first region 130a, and a third region 130c on both sides of the second region 130b. The height of the second region 130b is higher than the heights of the first region 130a and the third region 130c. In such a case, the tack force adjustment unit 120 may be formed on the entire front surface of the front plate 30 (the entire first region 130a, second region 130b, and third region 130c). The tack force adjustment unit 120 may be formed on a part of the front surface of the front plate 30 (at least one of the first region 130a, second region 130b, and third region 130c).

[0073] The front plate 30 may have the same height as the rear plate 32 and the side plates 34 as shown in FIGS. 13 and 14. In such a case, the tack force adjustment portion 120 may be formed on the entire front surface of the front plate 30. The tack force adjustment portion 120 may be formed on a part of the front surface of the front plate 30. The tack force adjustment portion 120 may be formed in a long rectangular shape in the longitudinal direction A at the upper part near the center of the front surface of the front plate 30.

[0074] The configuration of the adhesive film storage box 10 described in the above embodiments is not limited thereto. For example, the present invention can also be applied to those without the extension piece 35, the knob piece 110, etc.

Example

[0075] The lifting of the adhesive film F with respect to the front plate 30 of the adhesive film storage box 10 was evaluated. The evaluation was carried out as follows in an atmosphere of 23 ± 1°C and 50 ± 5% RH. The wound body around which the adhesive film was wound was accommodated in the film storage box described in FIGS. 11 and 12, the adhesive film was pulled out from the film storage box, the lid was closed and cut. Immediately thereafter, the lid was opened, and the state in which the cut end of the adhesive film naturally lifted from the front plate was observed.

[0076] The evaluation is expressed as "×" when the cut end of the adhesive film remains adhered to the front plate and does not lift even after 10 seconds, "○" when a part of the cut end of the adhesive film lifts from the front plate within 10 seconds, and "◎" when a part of the cut end of the adhesive film lifts from the front plate within 3 seconds.

[0077] The evaluation was carried out by changing the loop stiffness L and the tack force T of the adhesive film by changing the type of film base material, the thickness of the film base material, the type of adhesive, the thickness of the adhesive layer, the coating pattern of the adhesive layer, the total thickness of the film, the type of varnish on the front plate, and the way of applying the varnish. The above evaluations were carried out under the conditions of the following Examples 1 to 8 and Comparative Examples 1 and 2. The results are summarized in FIGS. 15 and 16.

[0078] (Example 1) As the adhesive film, the type of the film base material was PVDC (polyvinylidene chloride), the thickness of the film base material was 25 μm, the type of the adhesive was urethane-based, the thickness of the adhesive layer was 25 μm, the coating pattern of the adhesive layer was solid coating, and the total thickness of the film was 50 μm. As the front plate of the film storage box, the type of the varnish of the tack force adjustment part was peach finish varnish (manufactured by DIC), and the way of applying the varnish was solid coating. The loop stickiness L of such an adhesive film was 5.0 (mN / 25 mm), and the tack force T of the front plate of the film storage box was 0.05 (N / 300 mm 2 ) It was. In the evaluation, the adhesive film lifted off from the front plate within 3 seconds.

[0079] (Example 2) The type of the varnish on the front plate of the film storage box was set to HTA-W (manufactured by T&K TOKA). The way of applying the varnish was to undercoat the varnish twice by brushing and then overcoat the temperature-adjusted varnish by solid coating. Otherwise, the conditions were the same as those in Example 1. The loop stickiness L of such an adhesive film was 5.0 (mN / 25 mm), and the tack force T of the front plate of the film storage box was 0.26 (N / 300 mm 2 ) It was. In the evaluation, the adhesive film lifted off from the front plate within 3 seconds.

[0080] (Example 3) The thickness of the film base material of the adhesive film was set to 11 μm, the thickness of the adhesive layer was set to 11 μm, and the total thickness of the film was set to 22 μm. Otherwise, the conditions were the same as those in Example 1. The loop stickiness L of such an adhesive film was 2.0 (mN / 25 mm), and the tack force T of the front plate of the film storage box was 0.05 (N / 300 mm 2 ) It was. In the evaluation, the adhesive film lifted off from the front plate within 3 seconds.

[0081] (Example 4) The coating pattern of the adhesive layer of the pressure-sensitive adhesive film was a dot pattern, and the type of varnish on the front plate of the film storage box was silicone coating. Otherwise, the conditions were the same as in Example 1. The loop tack L of such a pressure-sensitive adhesive film was 2.5 (mN / 25 mm), and the tack force T of the front plate of the film storage box was 0.14 (N / 300 mm 2 ). In the evaluation, the pressure-sensitive adhesive film lifted off the front plate within 3 seconds.

[0082] (Example 5) The type of varnish on the front plate of the film storage box was silicone coating. Otherwise, the conditions were the same as in Example 1. The loop tack L of such a pressure-sensitive adhesive film was 5.0 (mN / 25 mm), and the tack force T of the front plate of the film storage box was 0.51 (N / 300 mm 2 ). In the evaluation, the pressure-sensitive adhesive film lifted off the front plate within 10 seconds.

[0083] (Example 6) The type of varnish on the front plate of the film storage box was GLA (manufactured by T&K TOKA). The method of applying the varnish was to undercoat the varnish twice by brushing and to overcoat the varnish by solid coating. Otherwise, the conditions were the same as in Example 1. The loop tack L of such a pressure-sensitive adhesive film was 5.0 (mN / 25 mm), and the tack force T of the front plate of the film storage box was 0.45 (N / 300 mm 2 ). In the evaluation, the pressure-sensitive adhesive film lifted off the front plate within 10 seconds.

[0084] (Example 7) The thickness of the film base material of the pressure-sensitive adhesive film was 15 μm, the thickness of the adhesive layer was 15 μm, and the total thickness of the film was 30 μm. The type of varnish on the front plate of the film storage box was silicone coating. Otherwise, the conditions were the same as in Example 1. The loop tack L of such a pressure-sensitive adhesive film was 3.3 (mN / 25 mm), and the tack force T of the front plate of the film storage box was 0.5 (N / 300 mm 2 ). In the evaluation, the pressure-sensitive adhesive film lifted off the front plate within 10 seconds.

[0085] (Example 8) The type of the film base material of the adhesive film was set to PE. The type of the varnish on the front plate of the film storage box was set to GLA (manufactured by T&K TOKA). Otherwise, the conditions were the same as in Example 1. The loop tack L of such an adhesive film was 2.0 (mN / 25 mm), and the tack force T of the front plate of the film storage box was 0.26 (N / 300 mm 2 ). In the evaluation, the adhesive film lifted from the front plate within 10 seconds.

[0086] (Comparative Example 1) The thickness of the adhesive layer of the adhesive film was set to 20 μm, and the total thickness of the film was set to 45 μm. The type of the varnish on the front plate of the film storage box was set to UV HJK undercoating G (manufactured by T&K TOKA). Otherwise, the conditions were the same as in Example 1. The loop tack L of such an adhesive film was 4.5 (mN / 25 mm), and the tack force T of the front plate of the film storage box was 0.8 (N / 300 mm 2 ). In the evaluation, the adhesive film did not separate from the front plate even after 10 seconds.

[0087] (Comparative Example 2) The thickness of the film base material of the adhesive film was set to 11 μm, the thickness of the adhesive layer was set to 11 μm, and the total thickness of the film was set to 22 μm. The type of the varnish on the front plate of the film storage box was set to HTA-W (manufactured by T&K TOKA). Otherwise, the conditions were the same as in Example 1. The loop tack L of such an adhesive film was 2.0 (mN / 25 mm), and the tack force T of the front plate of the film storage box was 0.45 (N / 300 mm 2 ). In the evaluation, the adhesive film did not separate from the front plate even after 10 seconds.

[0088] As shown in FIG. 16, it was confirmed that the adhesive film naturally separated from the front plate when the loop tack L > the tack force T × 6 was satisfied. Also, when the loop tack L > the tack force T × 12 was satisfied, it was confirmed that the adhesive film separated further from the front plate.

Industrial Applicability

[0089] The present invention is useful when providing an adhesive film storage box and an adhesive film storage device that allow a user to appropriately pick up an adhesive film during use.

Explanation of reference numerals

[0090] 1 Adhesive film storage device 10 Adhesive film storage box 11 Winding body 20 Main body part 21 Lid part 30 Front plate 31 Bottom plate 32 Rear plate 34 Side plate 120 Tack force adjustment part F Adhesive film L Loop stiffness T Tack force

Claims

1. An adhesive film storage box for storing a wound body wound with an adhesive film, having at least a front plate, a bottom plate, a rear plate, and side plates, and a main body portion with an open upper surface, and a lid portion capable of opening and closing the opening on the upper surface of the main body portion, when the perimeter of the adhesive film is 50 mm, the loop stiffness of the adhesive film is L (mN / 25 mm), When the tack force between the adhesive film and the portion of the front plate that contacts the drawn adhesive film is T (N / 300 mm 2 ), the front plate is provided with a tack force adjustment portion configured to satisfy L > T × 6, an adhesive film storage box.

2. The adhesive film storage box according to claim 1, wherein the tack force adjustment portion is configured to satisfy L > T × 12.

3. The adhesive film storage box according to claim 1 or 2, wherein the tack force adjustment portion is provided on a part or all of the front surface of the front plate.

4. The adhesive film storage box according to any one of claims 1 to 3, wherein the adhesive film has an adhesiveness of 0.01 N / 25 mm or more.

5. An adhesive film storage device including the adhesive film storage box according to any one of claims 1 to 4, and a wound body stored in the adhesive film storage box.

6. The adhesive film storage device according to claim 5, wherein the drawn adhesive film curls convexly toward the front plate side or convexly toward the side opposite to the front plate.

Images