JP4657485B2 - Tape with time indicator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tape capable of recognizing the passage of a certain time, and more particularly to a tape capable of recognizing the passage of a certain period (time) by a change in color. The tape of the present invention can be suitably used, for example, as an indicator for affixing to an infusion set used for infusion therapy in order to prevent nosocomial infection accidents and informing the replacement time of the infusion set. Moreover, it can affix on the adhesive film used in the catheter insertion part disinfection, and can utilize also as an indicator for notifying the replacement time of an adhesive film.
[0002]
[Prior art]
In recent years, accidents of nosocomial infections are often reported on TV, radio, newspapers, etc. However, nosocomial infections are usually treated by bacteria that exist in the hospital that are not usually a problem. It grows in your body. There are various causes, but one of them is bacterial contamination through equipment used for infusion therapy. In particular, in patients who need to administer high calorie nutrition, infusion therapy is generally prolonged, and therefore an infusion set connecting the infusion solution and the catheter may be reused, which is not preferable because it easily causes bacterial contamination.
[0003]
Therefore, the duration of use of the infusion set is set in advance at each medical facility, and the infusion set is exchanged for a certain period of time. Therefore, the patient name, drug name, infusion set exchange time on the patient's arm or the tube portion of the infusion set Measures such as sticking a tape with the information, etc. and displaying the replacement time are taken. Moreover, the catheter insertion part needs periodic disinfection, and an adhesive film is used in that case. The adhesive film is replaced at the same time during periodic disinfection. The tape describing the replacement time is affixed on the adhesive film.
However, in such measures, the replacement time of the infusion set and adhesive film varies from patient to patient, and the letters on the tape must be small, so one person must be responsible for several patients. There is a risk that the busy nurse may miss the predetermined replacement time, and as a result, the infusion set and the adhesive film are not replaced and the risk of nosocomial infection increases.
By the way, for example, an indicator that displays the passage of time by color change, such as an indicator that displays the replacement timing of insect repellents, is well known, so it is used when disinfecting an infusion set or catheter insertion part For example, it may be attached to the adhesive film to indicate the time for replacing the infusion set or the adhesive film. For example, Japanese Examined Patent Publication No. Sho 64-2906 describes an example in which such an indicator is held on a suitable base material and attached to a product or the like.
[0004]
[Problems to be solved by the invention]
However, such an indicator usually uses a combination of an alkaline substance whose pH changes due to carbon dioxide in the air and a pH indicator. Therefore, in order to avoid the influence of carbon dioxide, the indicator is used as a gas barrier outer bag until use. Since it must be sealed and the outer bag must be broken one by one at the start of use, there is a problem that it takes time and is very inconvenient.
The present invention has been made against the background of such circumstances, and the object of the present invention is to easily confirm a predetermined elapsed time even from a distance, and to easily paste it on an object or the like without a gas barrier packaging. It is to provide a tape with a time indicator to obtain.
[0005]
[Means for Solving the Problems]
The present invention made to achieve such an object is configured as follows.
A main body by laminating an adhesive layer on one surface of a tape base material, applying a time indicator that causes a color change over time to at least a part of the other surface, and providing a release agent layer on the time indicator application surface Consists of a tape, and further, a release film formed by laminating an adhesive layer, a gas barrier layer, and a release agent layer in this order on the release agent layer surface of the main body tape is applied with the adhesive layer as the inner surface to constitute a single-side coated tape. A tape with a time indicator in which the single-sided coated tape is wound around a core material with the pressure-sensitive adhesive layer side of the main body tape inside.
B: A main body in which a pressure-sensitive adhesive layer is laminated on one surface of a tape base, a time indicator that causes a color change with time is applied to at least a part of the other surface, and a release agent layer is provided on the time indicator application surface Further, a front side release film composed of a gas barrier layer and a pressure-sensitive adhesive layer is attached to the release agent layer surface of the main body tape with the pressure-sensitive adhesive layer as an inner surface, while the gas barrier layer and release agent are applied to the pressure-sensitive adhesive layer surface of the main body tape. A tape with a time indicator in which a backside release film composed of layers is attached with the release agent layer inside.
C The tape with a time indicator according to item A or B, wherein a plurality of time indicators having different color change times are applied to one tape substrate.
D The tape with a time indicator according to any one of items A to C, wherein the color change time of the time indicator is 20 to 200 hours.
E. Infusion set in infusion therapy, replacement time of adhesive film used at the time of catheter insertion site disinfection, or time-lapse according to any one of items A to D used to know the expiration date of food Tape with indicator.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings illustrating embodiments of the present invention.
FIG. 1 schematically shows an enlarged cross section of a tape according to an embodiment of the present invention. In FIG. 1 (a), reference numeral 2 denotes a tape base material. An adhesive layer 4 is laminated on one surface of the tape base material 2, and a time indicator 6 whose color changes with time is applied to the other surface. In addition, a release agent layer 8 is provided on the application surface of the time indicator 6 to form a main body tape 10, and further, an adhesive layer 12, a gas barrier layer 14, and a release agent layer 16 are provided on the release agent layer 8 surface of the main body tape 10. A release film 18 laminated in this order is attached with the pressure-sensitive adhesive layer 12 side inward to form a single-sided coated tape 20, and the single-sided coated tape 20 is wound around a core material as shown in FIG. A roll-shaped tape 22 with a time indicator is formed. The single-sided coated tape 20 is coated on one side of the main body tape 10 on the time indicator 6 side with a release film 18 including a gas barrier layer, and is protected from the influence of outside air on the single-sided side, but as shown in FIG. When it becomes a shape, the time indicator 6 is protected from both the inside and outside. Here, the time indicator 6 is applied to the entire surface of one side of the tape base material 2, but it can also be applied partially to the tape base material 2, and a plurality of types of indicators having different color change times are partially applied. It is also possible to apply.
[0007]
In the said Example, as the tape base material 2, resin films, such as polyvinyl chloride, polyester, polyethylene, a stretched polypropylene, are employ | adopted suitably. As the pressure-sensitive adhesive for the pressure-sensitive adhesive layers 4 and 12, those employed in ordinary tapes such as natural rubber, synthetic rubber, acrylic and silicone can be used as they are. As the release agent for the release agent layers 8 and 16, a silicone release agent used in a normal tape can be used. As the time indicator 6, for example, a solution in which a variable dye that changes color due to a change in pH and an alkaline substance that reacts with carbon dioxide in the atmosphere as described in Japanese Patent Publication No. 64-2906 can be used. For example, it is preferable that the color change time is adjusted to 20 to 100 hours in order to know that the replacement time (time) of the infusion set and the expiration date such as rice balls sold at supermarkets have come. This adjustment is performed by the alkaline substance to be used, the amount of the alkaline substance used, and the release agent layer 8 provided on the indicator coating surface. As the gas barrier material of the gas barrier layer 14, a stretched polypropylene film coated with vinylidene chloride, a multilayer film such as polyethylene or polypropylene laminated with ethylene vinyl alcohol, and the like can be used.
[0008]
The tape 22 with the time indicator is cut after the single-sided coated tape 20 to an appropriate size at the time of use, and the adhesive layer 4 side of the main body tape 10 is applied to the surface of the object 24 as shown in FIG. The release film 18 is removed and used.
[0009]
FIG. 2 schematically shows another embodiment of the present invention in an enlarged manner. The tape 26 with a time indicator described in FIG. 2 (a) is configured by providing a front side release film 30 on one side of the main body tape 28 and a back side release film 32 on the other side, and forming a sheet shape. Yes. The tape main body 28 has the same configuration as the main body tape 10, and an adhesive layer 36 is laminated on one surface of the tape base material 34, and a temporal indicator 38 whose color changes with time is provided on the other surface. While being applied, a release agent layer 40 is provided on the application surface of the time indicator 38. The front side release film 30 includes a gas barrier layer 42 and an adhesive layer 44, and is attached to the surface of the release agent layer 40 of the main body tape 28 with the adhesive layer 44 inside. The back side release film 32 includes a gas barrier layer 46 and a release agent layer 48 and is attached to the surface of the pressure-sensitive adhesive layer 36 of the main body tape 28 with the release agent layer 48 inside.
In the above-described embodiment, the release film 18 having the gas barrier layer 14 is provided on one side of the main body tape 10 to form a single-side coated tape, but in this embodiment, the gas barrier layers 42 and 46 are provided on both sides of the main body tape 28, respectively. A front-side release film 30 and a back-side release film 32 are provided, and so-called double-sided coated tape.
In addition, about a tape base material, a time-lapse indicator, the adhesive layer of each part, a peeling agent layer, and a gas barrier layer, the thing similar to the said Example can be used.
[0010]
The tape 26 with the time indicator is cut into an appropriate size at the time of use, and after removing the back side peeling film 32, the adhesive layer 36 side of the main body tape 28 is placed on the surface of the object 50 as shown in FIG. After sticking, the front side peeling film 30 is removed and used. Further, as shown in FIG. 3 (a), a tape 54 with a time indicator that is cut and formed into an appropriate size and shape (for example, a strip having a width of about 10 mm) may be used. Further, the tape with time indicator uses a plurality of time indicators having different color change times, for example, a time indicator indicating different numbers (or different characters, figures, symbols, etc.) as shown in FIG. You may make it provide application | coating part 38a, 38b, 38c. Several types of elapsed time can be known with one type of tape, and the shape (numbers, letters, etc.) of the indicator coating portion is different, so that there is an advantage that each elapsed time can be easily distinguished and cannot be overlooked.
[0011]
[Experimental Example 1] (Preparation of time indicator, color change time)
As a variable dye, 50 ml of 0.1% metacresol purple ethanol solution and 0.01% sodium hydroxide aqueous solution were mixed, and the final concentration of sodium hydroxide was adjusted to 0.0006 molar with ethanol. This solution was applied to a polyvinyl chloride film having a thickness of 40 μm. After drying with nitrogen gas and immediately leaving in the air, the color of the indicator changed from blue to colorless in 24 ± 2 hours.
[Experimental example 2] (Example of use of time indicator), (see FIG. 4)
As shown in FIG. 4, a pressure-sensitive adhesive layer 62 was formed by applying and drying a rubber-based pressure-sensitive adhesive in advance on one side of a 40 μm-thick biaxially stretched polypropylene film 60 with a roll coater so that the solid content was 25 g / m ² . Next, the indicator 64 prepared in Experimental Example 1 was applied to the other surface of the film 60. The indicator 64 was partially applied to the end of the film 60. Further, release paper 66 coated with a silicone release agent was bonded to the surface of the adhesive layer 62 of the film 60. The indicator was dried under nitrogen gas, packaged with a polyolefin gas barrier film 68, allowed to stand at room temperature for about 1 month, then opened and left in the air. The same results as in Experimental Example 1 were obtained.
[0012]
[Example 1] (roll form, see FIG. 5)
As shown in FIG. 5 (a), a rubber-based adhesive is applied in advance on one side of a biaxially stretched polypropylene film (tape substrate) 70 having a thickness of 38 μm with a roll coater so that the solid content is 25 g / m ^2. An adhesive layer 74 was formed. Next, as shown in FIG. 5 (b), the indicator 72 prepared in Experimental Example 1 is applied in a streak shape to the center of the other surface of the film 70, and after the indicator 72 is dried under nitrogen gas, a silicone release agent is applied. Then, a release agent layer 73 was formed. Thus, the main body tape 76 is configured.
Separately, a silicone release agent is applied to one side of a gas barrier film (stretched polypropylene film coated with vinylidene chloride) 78 to form a release agent layer 80, and an adhesive is applied to the other side and dried to form an adhesive layer 82. Then, the pressure-sensitive adhesive layer 82 side was set on the inside, and was bonded onto the indicator 72 application surface of the main body tape 76. The tape thus produced was wound into a roll to produce a tape with a time indicator according to the above-described example of the present invention.
The tape obtained by the above method is left in the air for about one month, and then the tape is cut into an appropriate size, the release film 84 on the surface is peeled off, and the film surface coated with the indicator is exposed to the air. As a result, the same results as in Experimental Example 1 were obtained.
[0013]
[Example 2] (sheet-like form, see FIG. 6)
As shown in FIG. 6 (a), a rubber adhesive is applied to one side of a biaxially stretched polypropylene film (tape substrate) 86 having a thickness of 38 μm in advance with a roll coater so that the solid content is 25 g / m ^2. An adhesive layer 88 was formed. Next, an indicator 90 was applied to the center of the other surface of the film 86 so as to draw numerals 1, 2, and 3 (indicated by dotted lines in the figure) as shown in FIG. 6 (b), the indicator indicated by “1” is applied with the indicator prepared in Experimental Example 1, and the parts “2” and “3” are higher in alkali concentration than in Experimental Example 1. An indicator prepared to change color in about 48 hours and about 72 hours, respectively, was applied. After drying the indicator under nitrogen gas, a silicone release agent was applied thereon to form a release agent layer 92. In this way, the main body tape 94 was produced.
Separately, a pressure-sensitive adhesive is applied to one side of a gas barrier film (stretched polypropylene film coated with vinylidene chloride) 96 and dried to form a pressure-sensitive adhesive layer 98 to form a front-side release film 100, with the pressure-sensitive adhesive layer 98 side facing inward. The main body tape 94 was pasted onto the application surface of the indicator 90. Further, a silicone release agent is applied to one side of a gas barrier film (stretched polypropylene film coated with vinylidene chloride) 102 to form a release agent layer 104 to form a back release film 106, with the release agent layer 104 side on the inside. Then, it was bonded onto the adhesive-coated surface of the main body tape 94 to produce a sheet-like tape with a time indicator according to the present invention.
The tape obtained by the above method is left in the air for about one month, and then the back side release film 106 is peeled off and attached to an appropriate substance, and the front side peelable film 100 is peeled off to apply the indicator to the film surface. The portion indicated by “1” changed from blue to colorless after about 1 day, and the portions indicated by “2” and “3” after about 2 days and about 3 days, respectively.
[0014]
Although the embodiments of the present invention have been described above, the present invention is not limited to such embodiments, and can of course be implemented in various modes without departing from the gist of the present invention.
[0015]
【The invention's effect】
Since this invention is comprised as mentioned above, there exists an effect described below.
The tape with a time indicator does not require gas barrier packaging because the time indicator is covered with a release film having a gas barrier layer. Therefore, the manufacturing process can be simplified and the manufacturing cost can be reduced. Moreover, since it is only necessary to peel off a peeling film at the time of use, there is an advantage that it is easy to use and easy to use. Furthermore, since the passage of time is determined by the color change, it is not necessary to look at the clock every time, and it is easy to use. In addition, if it is used for managing the replacement time (time) of the adhesive film used when disinfecting a patient's infusion set or catheter insertion part, the person in charge of infusion management will glance at the patient's infusion set or catheter insertion. Whether or not the adhesive film used for partial disinfection has reached the replacement time can be determined. Therefore, the risk of missing a predetermined replacement time of the adhesive film used when disinfecting an infusion set or a catheter insertion part is reduced, and a hospital infection accident can be prevented. Furthermore, the tape with a time indicator can be used for displaying the expiration date of food. For example, if it is used to display the expiration date of a rice ball or the like sold at a supermarket or a convenience store, there is an advantage that the administrator can simplify the labor required for the expiration date management. Moreover, if a plurality of types of indicators having different color change times are used on a tape piece having a size of use unit, for example, for managing the expiration date of a plurality of types of foods having different expiration dates on one type of tape. It has the advantage that it can be used and requires a small assortment of tapes.
[Brief description of the drawings]
FIG. 1A is a schematic partial enlarged sectional view of a constituent part of one embodiment of the present invention, FIG. 1B is a schematic partial enlarged explanatory view of the same embodiment, and FIG. It is explanatory drawing which shows the use condition of.
2A is a schematic partial enlarged cross-sectional view of another embodiment of the present invention, and FIG. 2B is an explanatory view showing a use state of the embodiment.
FIG. 3A is a plan view showing a unit piece obtained by cutting the tape of the embodiment into the size of a use unit, and FIG. 3B is an explanatory view showing a modified example thereof.
FIGS. 4A and 4B are a schematic plan view and a front view showing the configuration of an experimental example of the present invention. FIGS.
5A is a schematic partial enlarged sectional view showing an embodiment of the present invention, and FIG. 5B is a plan view in which a part of the constituent members of the embodiment is broken.
FIGS. 6A and 6B are schematic partial enlarged sectional views showing still another embodiment of the present invention and plan views of components of the embodiment. FIGS.
[Explanation of symbols]
2, 34, 60 Tape substrate 4, 12, 36, 44, 62, 74, 82, 88, 98 Adhesive layer 6, 38, 64, 72, 90 Time indicator 8, 16, 40, 48, 80, 92 Release agent layer 10, 28, 76, 94 Main tape 14, 46 Gas barrier layer 18, 84, 100 Release film 20 Single-sided covering tape 22, 26, 54 Tape with time indicator 30 Front release film 32 Back release film 68, 78, 96 Gas barrier film

Claims (5)

Adhesive layer is laminated on one side of the tape base, and a time indicator that causes a color change over time is applied to at least a part of the other side, and a release agent layer is provided on the time indicator application surface, and the main body tape Furthermore, a release film formed by laminating an adhesive layer, a gas barrier layer, and a release agent layer in this order on the release agent layer surface of the main body tape is applied with the adhesive layer as an inner surface to form a single-side coated tape. A tape with a time indicator in which a single-sided coated tape is wound around a core material with the pressure-sensitive adhesive layer side of the main body tape inside. Adhesive layer is laminated on one side of the tape base, and a time indicator that causes a color change over time is applied to at least a part of the other side, and a release agent layer is provided on the time indicator application surface, and the main body tape Further, a front side release film composed of a gas barrier layer and an adhesive layer is attached to the release agent layer surface of the main body tape with the adhesive layer as an inner surface, while the gas barrier layer and the release agent layer are attached to the adhesive layer surface of the main body tape. A tape with a time indicator in which a backside release film made of is attached with a release agent layer inside. The tape with a time indicator according to claim 1 or 2, wherein a plurality of types of time indicator having different color change times are applied to one tape base material. The tape with a time indicator according to any one of claims 1 to 3, wherein a color change time of the time indicator is 20 to 200 hours. The infusion set in the infusion therapy, the replacement time of the adhesive film used at the time of disinfection of the catheter insertion portion, or the expiration date of the food is used to know the expiration date of any one of claims 1 to 4. Tape with time indicator.

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