JP6526746B2 - Indicator with indicator and indicator used with adsorption member - Google Patents

Description

  The present invention relates to an adsorbing member provided with an indicator for notifying, for example, the replacement time of an adsorbing member for adsorbing harmful substances and the like, and an indicator used together with the adsorbing member, and in particular, utilizing a reaction with a substance adsorbed by the adsorbing member. Belongs to the technical field that enables to inform the time of replacement.

  For example, in the case of displaying a cultural property, the environment of the display space should be maintained so that the concentration of harmful substances (ammonia, acetic acid, formaldehyde, etc.) that may adversely affect the contained cultural property is below the specified value. I need to get it done.

  In order to reduce the concentration of harmful substances in the display case to a predetermined value or less, generally, a harmful substance adsorbing member may be used. Since the harmful substance adsorption amount of the adsorption member has a limit and adsorption beyond the limit can not be expected, it is necessary to replace the adsorption member whose adsorption amount of the harmful substance has reached its limit as it has reached the end of its life. However, since the life of the adsorption member can not be easily confirmed on the site, it may be replaced by the arrival of the set replacement time regardless of the adsorption amount although there is a surplus in the adsorption amount, or some problem may occur. It is conceivable that the use of the adsorption member with lowered adsorption performance continues. In the former case, since the performance of the adsorptive member is to be discarded while being left, waste is caused, and in the latter case, there is a possibility that the cultural property may be adversely affected.

  Therefore, it is conceivable to grasp how much the adsorption performance of the adsorption member has decreased, but when trying to grasp the adsorption performance, it is possible to collect the adsorption member at the site where it is used and to where the analyzer is placed. It has to be carried and analyzed, but such a method is not realistic in cost.

  Then, the indicator which is disclosed by patent documents 1-3 is devised, for example. The adsorption sheet with an indicator of patent document 1 is comprised by enclosing in a bag the oxygen detection agent which discolors when oxygen concentration rises, and the oxygen scavenger which absorbs oxygen, and adjusts the oxygen permeability of a bag Thus, it is possible to indicate the replacement time of the adsorption sheet by adjusting the period in which the oxygen detection agent is discolored to the period in which the adsorption sheet can exert the adsorption power.

  Patent Document 2 adsorbs ammonia by attaching ferric iron and sulfate to a particulate adsorbent containing activated clay of silica, and at the same time, generates iron ions, whereby the adsorbent is discolored from milky white to dark brown. Can be notified of the replacement time.

  According to Patent Document 3, the gas passing through the vent formed in the tool is adsorbed by the detecting member through the removing material and the spacer, whereby the amount of the specific gas detected by the color of the detecting member is checked from the outside. It is possible to

JP, 2005-172446, A Patent No. 4707366 gazette Patent No. 4409365 gazette

  By the way, in patent documents 1 and 2, although the time of exchange can be notified by the color of an indicator changing in color, for example, in patent document 1, since the color of the whole of an oxygen detection agent changes gradually, it is a new article The color of time disappears from the oxygen detection agent with the passage of time, and as a result, it is difficult to understand how much the color of the new product is different from the current color. Similarly, in the case of Patent Document 2, the whole of the adsorbent turns from milky white to dark brown, so it is difficult to know how much the color at the time of new product and the current color are different. In the case of Patent Document 3 as well, when it is used as an indicator, the entire color changes uniformly, and thus the same problem may occur.

  If you do not know the difference between the new color and the current color, you do not know if it is time to replace it, if there is enough time to replace it, or if it is time to replace it. Since it is hard to grasp intuitively, it is not possible to prepare a suction member for replacement in a planned manner. This becomes a significant problem particularly when the person in charge of management changes in the middle of using the suction member, and it may be difficult to properly maintain the environment in the display case.

  Further, Patent Document 1 is not directly related to the amount of adsorption of the adsorption member and the increase of the oxygen concentration, and can not always indicate the correct replacement time corresponding to the degree of contamination of the harmful substance. Furthermore, in Patent Document 2, the adsorbing member itself has an indicator function, for example, when a large amount of the adsorbing member is used in order to maintain the environment in the display case for displaying the cultural property, the adsorbing member itself is When discolored, it interferes with the display and is not suitable for use with the display.

  The present invention has been made in view of such a point, and the purpose of the present invention is to make it possible for anyone to easily and inexpensively grasp the replacement time of the adsorption member at low cost. Good maintenance of the environment of the space where the member is placed.

  In order to achieve the above object, in the present invention, an indicator using a reaction with a substance to be adsorbed is used as an indicator, and the color change area of the indicator can be used to indicate the replacement time.

According to a first aspect of the present invention, there is provided an indicator-attached adsorbing member comprising an adsorbing member for adsorbing a substance, and an indicator indicating a replacement time of the adsorbing member, wherein the indicator reacts with the substance to discolor the member. The storage member is made of a non-transmissive member that does not transmit a substance, and stores the discoloring member so that the discoloring member is visible from the outside. It is possible to configure the storage member, and the storage member is provided with a cutting line for cutting out a part of the storage member from the other part and exposing only a part of the color changing member at the start of use of the indicator. , the portion to be cut of the receiving member at the start of use of the indicator, adsorbent material display unit substance name which the adsorption member to adsorb is displayed is provided, the color change member The shorter the period that can exert a suction force of the substance by the suction member, characterized in that it is configured as discolored area becomes wider.

  According to this configuration, the harmful substance is adsorbed to the adsorbing member by, for example, placing the adsorbing member with the indicator inside the display case. Further, the harmful substance is in direct contact with the discoloring member of the indicator only in a part in contact with the outside air, and the harmful substance is not in direct contact with the part covered by the housing member. Therefore, the portion of the color changing member in contact with the harmful substance is discolored early, and the portion covered by the accommodating member is discolored late. Thus, the harmful substance gradually intrudes from one part of the color changing member to the other part with the passage of time, so that the color-changed area of the color changing member spreads.

  Therefore, the entire detection agent is not discolored at one time as in the conventional example, and in the present invention, after a part of the discolored member is discolored, the discolored area gradually spreads with the passage of time. Therefore, it is known that if the area is narrow, there is room for replacement of the adsorption member, and if the area is wide, exchange of the adsorption member is approaching.

  In addition, it is possible to easily expose only a part of the discoloring member to be in contact with the outside air by cutting off a part of the housing member along a cutting line of the housing member.

  In addition, since the name of the substance to be adsorbed can be grasped before using the indicator, it is prevented from being used for adsorption of a wrong substance. Then, when the use of the indicator is started, the portion where the substance name is displayed is cut off, so it does not get in the way, for example, when installed in a display case or the like.

  In addition to the inside of the display case, the suction member with an indicator can be used by being placed inside a case in which various books, documents, works of art, clothes, instruments, musical instruments and the like are accommodated.

According to a second aspect of the present invention, in the adsorption member with an indicator including an adsorption member for adsorbing a substance and an indicator indicating a replacement time of the adsorption member, the indicator reacts with the substance to change color; The storage member is made of a non-transmissive member that does not transmit a substance, and stores the discoloring member so that the discoloring member is visible from the outside. The accommodating member is provided with a discoloring member disposition area in which the discoloring member is disposed, and the discoloring member disposition area is colored in a predetermined color for each substance adsorbed by the adsorbing member. And the light transmitting portion having a light transmitting property that allows the color changing member to be visible from the outside, and the color changing member can exhibit the adsorption power of the substance by the suction member. The shorter wear period, characterized in that it is configured as discolored area becomes wider.

According to this configuration, it is possible to determine the substance to be adsorbed according to the color, so that it is possible to prevent the substance from being used for adsorption of a wrong substance.

According to a third aspect of the invention, in the first or second aspect of the invention, the storage member is provided with a user-enterable entry area .

According to a fourth aspect of the present invention, in the indicator used with an adsorbing member for adsorbing a substance, the indicator comprises a discoloring member which reacts with the substance to discolor, and a non-permeable member which does not transmit the substance. And a housing member for housing the member visible so as to be visible from the outside, wherein the housing member is configured to be capable of contacting only part of the color changing member to the outside air and covering the other part ; A cutting line is provided to cut out a part of the containing member from the other part to expose only a part of the color changing member when the indicator starts using, and the containing member is removed when the indicator starts using in part, the suction member adsorbate display unit is provided to be displayed substance name to be adsorbed, the color change member, child exhibits an adsorbing force of the substance by the suction member The shorter the period that can, characterized in that it is configured as discolored area becomes wider.

  According to a fifth aspect of the present invention, in the indicator used in combination with an adsorbing member for adsorbing a substance, the indicator comprises a discoloring member that reacts with the substance to discolor, and a non-permeable member that does not transmit the substance. And a storage member for receiving the visible color from the outside, wherein the storage member is configured to be capable of contacting only part of the color changing member to the outside air and covering the other part; A discoloring member disposing region is provided in which the discoloring member is disposed, and the discoloring member disposing region includes a portion colored in a predetermined color for each substance adsorbed by the adsorption member, and the discolored member visible from the outside And the color changing member has a wider area where the color change is made as the period in which the adsorptive member can exert the adsorptive power of the substance is shorter. Characterized in that it is configured such that.

  According to a sixth aspect, in the fourth or fifth aspect, the storage member is provided with a user-enterable entry area.

  According to the first aspect of the present invention, the color changing member that changes color by reacting with the substance adsorbed by the adsorbing member, and the containing member made of the non-permeable member that does not transmit the substance are provided. As the period in which the color changing member can exert the adsorptive power of the substance by the adsorbing member is shortened, the discolored area becomes wider, and anyone can easily change the adsorption member, and Since the cost can be intuitively grasped at low cost, the environment of the space in which the adsorption member is placed can be well maintained.

In addition , a part of the housing member can be easily exposed.

Also , knowing the name of the substance to be adsorbed before use can prevent it from being used for adsorption of a wrong substance, and when starting to use, it will cut off the part where the substance name is displayed. It will never be.

Moreover , it can be made not to be used for adsorption | suction of a wrong substance by coloring in a predetermined color for every substance to which an adsorption | suction member adsorb | sucks.

It is a figure which shows the use condition of the adsorption | suction member with an indicator which concerns on embodiment of this invention. It is a top view of an indicator. It is the III-III sectional view taken on the line in FIG. It is the FIG. 2 equivalent view which shows the state which cut | disconnected the indicator along the tearing-off line. It is the FIG. 3 equivalent view which shows the state which cut | disconnected the indicator along the tearing-off line. It is the FIG. 2 equivalent view which shows the example of a shape of a color-change member. It is the FIG. 2 equivalent view which shows another example of the harmful | toxic substance to adsorb | suck. It is the FIG. 2 equivalent view which shows the indicator in use. It is the FIG. 3 equivalent view which shows the case where a ventilation member is provided. It is the FIG. 5 equivalent view which shows the case where a ventilation member is provided. It is a graph which shows the color change speed of the color-change member by the change of the quantity of a reagent, and the presence or absence of a ventilation member. FIG. 7 shows an indicator with a clip-shaped break; It is a figure which shows the state which attached the indicator provided with the cut | interruption of clip shape to the adsorption | suction member. FIG. 10 shows another indicator provided with a clip-shaped cut. It is a figure which shows the state which attached the another indicator provided with the cut | interruption of clip shape to the adsorption | suction member.

  Hereinafter, embodiments of the present invention will be described in detail based on the drawings. The following description of the preferred embodiments is merely illustrative in nature, and is not intended to limit the present invention, its applications, or its applications.

  FIG. 1 is a view showing a usage state of a suction member with indicator A according to an embodiment of the present invention. FIG. 1 shows the case where the suction member with indicator A is used in a state of being placed inside the display case 100. The display case 100 is conventionally known, and is a case that can accommodate cultural assets, books, documents, works of art, clothes, instruments, instruments and the like. The present invention is not limited to being used inside the display case 100, and although not shown, for example, inside a sealed case such as a storage case, a storage case or the like or a case where only a part is opened slightly. It can also be used.

  The indicator-attached adsorbing member A includes an adsorbing member 200 that adsorbs a substance, and an indicator 1 that indicates the replacement time of the adsorbing member 200. Although FIG. 1 shows the case where the suction member 200 and the indicator 1 are placed in an easy-to-see place, the present invention is not limited to this. The suction member 200 and the indicator 1 are placed in a difficult-to-see place inside the display case 100 It can also be done.

  The usage example of the suction member with indicator A is not limited to the above-mentioned example, and there are various usage forms. For example, the adsorption member 200 and the indicator 1 may be separate, such as disposing the adsorption member 200 on the bottom surface of the display case 100 and disposing the indicator 1 thereon. When the adsorbing member 200 is disposed on the entire bottom of the display case 100 as in the case where the harmful substance is generated on the bottom of the display case 100, the indicator 1 is also in contact with the bottom of the display case 100. Alternatively, the indicator 1 may be disposed by cutting away, cutting or breaking a part of the suction member 200.

  Further, as shown in FIGS. 12 and 14, clip-shaped cut C is provided on resin sheets 4 and 5 of indicator 1, and as shown in FIGS. 13 and 15, a part of suction member 200 is cut at this cut C. The indicator 1 can also be attached to the suction member 200 by inserting it. At this time, the adsorption member 200 can be held in the thickness direction by the portion surrounded by the cut C in the resin sheets 4 and 5 and the upper and lower portions above the cut C, and this holding force is a resin It can be obtained by the elasticity of the produced sheets 4 and 5. Thereby, the dropout of the indicator 1 can be suppressed.

  In the case of a wall display case or the like, the suction member 200 may be suspended, and the indicator 1 having the clip-shaped cut C may be attached to the suction member 200.

  Alternatively, the indicator 1 may be attached to the suction member 200 using a double-sided tape or an adhesive. In this case, since the double-sided tape or adhesive is close to the indicator 1, the indicator 1 may be a double-sided tape or an adhesive. The size of the discolored area of the discoloring member 2 of the indicator 1 in reaction with the harmful substance released from the adhesive deviates from the period in which the adsorptive member 200 can exert the adsorptive power, so that an appropriate replacement time can be obtained. In the case where the indicator 1 is attached to the suction member 200, it is desirable to use the indicator 1 provided with the clip-shaped cut C as described above. When the indicator 1 is provided with the cut C and attached to the adsorption member 200, only the vicinity of the first mark portion 44 and the second mark portion 46 in the color changing member 2 is disposed on the front side of the adsorption member 200 as shown in FIG. It is also possible to make it easy to see and to expose the exposed portion of the color changing member 2 to the back side of the suction member 200. The cut C may have a slit shape, or may have a shape that cuts part of the resin sheets 4 and 5.

(Configuration of adsorption member 200)
The adsorbing member 200 may be anything that can adsorb harmful substances in the air, and the material is not particularly limited. The adsorption member 200 may be in the form of a sheet, a film, or a filter, and may be, for example, granular, powder, gel or the like. Further, although not shown, the adsorption member 200 may be accommodated in a breathable container. Examples of harmful substances which the adsorbing member 200 adsorbs include ammonia, acetic acid, formaldehyde and the like. These harmful substances are, for example, substances that may adversely affect cultural properties and the like contained in the display case 100, and are absorbed in the display case 100 by adsorbing such harmful substances. It is possible to preserve cultural assets etc. in good condition for a long time.

  Examples of the material (adsorbent) constituting the adsorption member 200 include, for example, activated carbon, attached activated carbon, natural zeolite, synthetic zeolite, zeolite analogue, sepiolite, sepiolite analogue, silica gel, diatomaceous earth, clay, porous ceramic, There are metals such as silver, copper, iron, titanium, potassium, aluminum, zinc, etc., these metal compounds, metal complexes and the like, and among these adsorbents, any one kind of adsorbent or a combination of plural kinds of adsorbents may be used can do. Moreover, as an adsorption functional group of adsorption agent, a sulfonic acid group, a carboxylic acid group, an amino group etc. can be mentioned, for example. In addition, it may be a so-called hybrid type adsorption member in which an adsorbent constituting the adsorption member 200 has an adsorption functional group.

  The adsorption member 200 may be an adsorption sheet, a film, a filter, or the like in which the adsorbent is attached to a base material such as a nonwoven fabric or a cloth using a binder. Moreover, you may give an adsorptive functional group to a base material by surface modification. A plurality of the above-mentioned suction sheet, film or filter may be stacked and used, or may be processed into a bellows shape.

  In addition, the adsorption member 200 may be configured in a pack shape in which the adsorbent is disposed between two base materials made of non-woven fabric or cloth. Further, the adsorption member 200 may have an adsorption functional group attached to the honeycomb structure, or an adsorption functional group may be provided to the honeycomb structure by surface modification. Further, the adsorbing member 200 may be a yarn to which the above-described adsorbent is attached, or a woven sheet using a yarn having an adsorptive functional group by surface modification. Furthermore, the adsorption member 200 may be a film into which the above-mentioned adsorbent is kneaded, or a film having an adsorption functional group by surface modification.

(Configuration of indicator 1)
The indicator 1 may be integrated with the adsorption member 200 or may be configured separately so as to be able to be disposed apart from each other. Also, the indicator 1 and the adsorption member 200 can be separately procured and the indicator 1 can be used with the adsorption member 200.

  As shown in FIG. 2, the indicator 1 is composed of a discoloring member 2 that changes color by reacting with the harmful substance, and a non-transmissive member that does not transmit the harmful substance, and a housing member 3 that accommodates the discolored member 2 visibly from the outside. And have.

(Configuration of Discoloring Member 2)
First, the color changing member 2 will be described. The color changing member 2 is formed in a sheet shape having a long shape in a predetermined direction, for example, a rectangular shape, and includes a base material made of a breathable member. As a member which comprises the base material of the discoloration member 2, although a filter paper, a nonwoven fabric, cloth etc. can be mentioned, for example, it is not restricted to these. The shape of the base of the color changing member 2 may be, for example, a triangle shown in FIG. 6, an oval not shown, etc., as well as a rectangle, but it has a short diameter and a long diameter, or a short side and a long side The shape is preferred.

  For example, as shown in the graph of FIG. 11 and the like, the time when the integrated value of the concentration time integral value of the harmful substance is larger than the time when the integrated value of the concentration time integral value of the harmful substance is smaller Since the change of the color change length of the color change member 2 becomes smaller as it passes, the more distant part from the exposed part of the color change member 2 is taken as the apex of the triangle, and the exposed part of the color change member 2 is widened. It is also possible to improve the reaction sensitivity with the substance.

  The color changing principle of the color changing member 2 is as follows. First, in the case of the discoloring member 2 of the indicator 1 used together with the adsorptive member 200 for adsorbing acetic acid as a harmful substance, the neutralization reaction with an acid and a base is used. A basic reagent (alkaline reagent) and a pH indicator are previously impregnated. Examples of the basic reagent include sodium hydroxide and sodium metasilicate. In this embodiment sodium metasilicate is used. The pH indicator is used to visually indicate the change in pH of the color changing member 2 in a color reaction. By impregnating the pH indicator, the initial color of the color changing member 2 is pink, and the pink changes to yellow by the neutralization reaction.

  Further, in the case of the discoloring member 2 of the indicator 1 used together with the adsorbing member 200 for adsorbing ammonia as a harmful substance, the neutralization reaction is utilized in the same manner as in the case of adsorbing acetic acid. The substrate is pre-impregnated with an acidic reagent and a pH indicator. Examples of the acidic reagent include sulfuric acid and phosphoric acid. In this embodiment, phosphoric acid is used. The pH indicator is used to visually indicate the change in pH of the color changing member 2 in a color reaction. By impregnating with the pH indicator, the initial color of the color changing member 2 is light pink, and the light pink turns to light yellow by the neutralization reaction.

  Moreover, in the case of the color-change member 2 of the indicator 1 used with the adsorption member 200 which adsorb | sucks the formaldehyde as a harmful substance, a hydroxylamine phosphate etc. can be used as a reaction reagent. The hydroxylamine phosphate and the pH indicator may be impregnated into the base of the color changing member 2 in advance.

  Next, the base material of the color changing member 2 will be specifically described. The base material of the color changing member 2 can be made of cellulose filter paper. The thickness of the base of the color changing member 2 is 0.22 mm. The base of the color changing member 2 has a width of 7 mm and a length of 20 mm. This is an example of dimensions, and does not limit the present invention.

  As described later, the color changing member 2 is used after being partially cut off. The base material of the color changing member 2 to be cut off at this time can be set to about 5 mm. In addition, by changing the type and thickness of the filter paper that constitutes the base of the color changing member 2, it is possible to change the speed of color change to be described later.

(Configuration of the housing member 3)
Next, the configuration of the housing member 3 will be described. As also shown in FIG. 3, the housing member 3 is configured of the front resin sheet 4 and the rear resin sheet 5. The materials of the front side resin sheet 4 and the rear side resin sheet 5 are the same, and for example, a colorless and transparent polyester film can be used, but the present invention is not limited thereto, and various resin sheets can be used. . The color of the front side resin sheet 4 and the back side resin sheet 5 is preferably colorless and transparent in order to clearly see the color reaction of the color changing member 2, that is, the color is not limited to this. It may be colored to such an extent that the change of the color of the member 2 can be seen. Further, the thickness of the front side resin sheet 4 and the back side resin sheet 5 may be thinner than the thickness of the color changing member 2.

  The sizes of the front side resin sheet 4 and the rear side resin sheet 5 are the same, and both are set larger than the size of the color changing member 2. Specifically, as shown in FIG. 2, the front side resin sheet 4 and the rear side resin sheet 5 are rectangular, and the dimension in the long side direction is set longer than the dimension in the long side direction of the color changing member 2 ing.

  Further, as shown in FIG. 3, the color changing member 2 is held in a state of being sandwiched between the front side resin sheet 4 and the rear side resin sheet 5. The color changing member 2 is in a state of being covered with a so-called laminate sheet. That is, after arranging the color changing member 2 between the front side resin sheet 4 and the rear side resin sheet 5, heat is applied from the outside and pressure-bonded to weld the front side resin sheet 4 and the rear side resin sheet 5 Thus, the front side resin sheet 4 and the rear side resin sheet 5 are integrated so that the color changing member 2 does not move from the predetermined position. In this state, the whole of the color changing member 2 is covered with the front side resin sheet 4 and the back side resin sheet 5, and therefore no harmful substance comes in contact with the color changing member 2. Further, the front side resin sheet 4 and the rear side resin sheet 5 are in close contact with the front surface and the rear side of the color change member 2, respectively, and between the front side resin sheet 4 and the surface of the color change member 2 There is almost no air entering between the surface 5 and the back surface of the color changing member 2.

  In the description of this embodiment, the vertical direction and the horizontal direction of the indicator 1 are defined as shown in FIGS. 2 and 3, but this is defined for the convenience of description, and the indicator of the present invention and the embodiment It does not limit the usage direction of 1. For example, the indicator 1 can be used with the upside down shown in FIGS. 2 and 3 reversed, or the indicator 1 can be used with the left and right shown in FIGS. 2 and 3 reversed. .

  According to the definitions of FIGS. 2 and 3, the long side direction (longitudinal direction) of the color change member 2 is the vertical direction of the indicator 1, and the short side direction of the color change member 2 is the horizontal direction of the indicator 1. The long side direction (longitudinal direction) of the front side resin sheet 4 and the back side resin sheet 5 is the left and right direction of the indicator 1, and the short side direction of the front side resin sheet 4 and the back side resin sheet 5 is the vertical direction of the indicator 1. It becomes.

  It is assumed that the front side resin sheet 4 has a first boundary line 4a extending in the vertical direction on the left side of the central portion in the horizontal direction. The first boundary 4a is virtual. The area on the left side of the first boundary line 4 a in the front side resin sheet 4 is a discoloring member disposition area 40 in which the discoloring member 2 is disposed. The color changing member 2 is disposed substantially at the center of the color changing member disposition area 40.

  In the color changing member placement area 40, a right side light transmitting portion 47 is provided adjacent to the right side of the color changing member 2, and a left side light transmitting portion 48 is provided adjacent to the left side of the color changing member 2. The right side light transmitting portion 47 and the left side light transmitting portion 48 are colorless and transparent, and respectively have a rectangular shape extending in the vertical direction along the right side and the left side of the color changing member 2. The vertical dimension of the right side light transmitting portion 47 and the left side light transmitting portion 48 is shorter than the dimension of the color changing member 2 in the vertical direction, and the right side light transmitting portion 47 and the left side light transmitting portion 48 It is provided only in the part corresponding to the middle part of the direction.

  The color changing member disposition area 40 is a colored portion of the present invention, and is colored in a predetermined color for each substance adsorbed by the adsorption member 200. However, the whole of the color changing member disposition area 40 is not colored, but the portion where the right side light transmitting portion 47, the left side light transmitting portion 48 and the color changing member 2 in the color changing member disposition area 40 are arranged is colored. Absent. Therefore, the part in which the color change member 2 is arrange | positioned is colorless and transparent, and it becomes possible to visually recognize from the outside easily.

  The color of the color change member disposition area 40 can be, for example, “red” if the harmful substance adsorbed by the adsorption member 200 is an acid, and “blue” if it is ammonia. The relationship between the harmful substance and the color is an example, and the present invention is not limited to this, but the user can start using it by setting the color predetermined for each harmful substance that the adsorbing member 200 adsorbs. It becomes difficult to get lost while using it.

  The front side resin sheet 4 is provided with a cutting line 42. The tearing line 42 is for cutting a part of the housing member 3 from the other part to expose only a part of the color changing member 2 to contact with the outside air, and the details will be described later. A portion below the line 42 is a portion to be cut off. When cutting, not only a part of the front side resin sheet 4 but also a part of the back side resin sheet 5 is cut off.

  The cutting line 42 extends in the left-right direction, and the right end of the cutting line 42 reaches the right end of the front resin sheet 4, and the left end of the cutting line 42 reaches the left end of the front resin sheet 4. Since the tearing line 42 is located about 5 mm above the lower end of the color change member 2, the lower part of the color change member 2 is also cut out together with the front side resin sheet 4. The color of the cutting line 42 can be the same as the color of the discoloring member disposition area 40, but the discoloring member in the discoloring member disposition area 40 can be visually recognized in the discoloring member disposition area 40 as well. The color of the placement area 40 is different.

  In the front side resin sheet 4, an adsorptive substance display unit 45 in which the name of the substance adsorbed by the adsorptive member 200 is displayed is provided at the cut-out portion of the housing member 3. FIG. 2 shows the case where the adsorbing member 200 adsorbs acetic acid, and the adsorptive substance display unit 45 displays “acetic acid”. In FIG. 7, the case where the adsorption member 200 carries out ammonia is shown, and the adsorption substance display part 45 is displayed as "ammonia". The color of the characters described in the adsorptive substance display portion 45 can be made the same as the color of the color change member disposition area 40. Further, as shown in FIG. 7, when the adsorptive material is ammonia, the color of the discoloring member disposition area 40 is different from that of the acetic acid shown in FIG. The color of the color changing member disposition area 40 may be the same in the case where the adsorptive material is ammonia and in the case where it is acetic acid.

  Since the adsorptive substance display portion 45 is provided below the cutting line 42, when the lower side of the storage member 3 is cut off along the cutting line 42, the adsorptive substance display portion 45 is also cut off. Therefore, the adsorbent display portion 45 does not get in the way during use.

  The front side resin sheet 4 is provided with an entry area 41 where the user can enter, for example, characters and marks, in an area above the cutting line 42 and on the right side of the first boundary line 4a. There is. The entry area 41 is colorless and transparent, but may be white or the like. In the entry area 41, for example, the date of start of use of the indicator 1 can be entered.

  The front side resin sheet 4 is provided with a first mark portion 44 and a second mark portion 46 which indicate that the size of the discolored area of the color change member 2 has become the size corresponding to the replacement time of the adsorption member 200. There is. The first mark portion 44 can be, for example, shaped like a triangle. The second mark portion 46 can have a shape different from that of the first mark portion 44, for example, a shape such as a straight line. The second mark portion 46 is located about 5 mm below the upper end portion of the color changing member 2 in the front side resin sheet 4 and extends in the left-right direction. The first mark portion 44 is provided at a position away from the color changing member 2, that is, in the writing area 41, and the top thereof is disposed to face the end of the second mark portion 46.

(Change in color of discolored member 2)
Next, the change in color of the color changing member 2 will be described in detail. When the use of the indicator 1 is started, a portion of the receiving member 3 below the cutting line 42 of the receiving member 3 is cut away along the cutting line 42 of the receiving member 3. Then, since the cutting line 42 is separated upward from the lower end portion of the color changing member 2, only the lower side (one side in the longitudinal direction) of the color changing member 2 is exposed to the outside of the housing member 3 from the cut surface. As a result, it becomes possible to expose only a part of the color changing member 2 from the housing member 3 and cover the other part with the housing member 3.

  When the indicator 1 is placed in the air, only the lower side of the color changing member 2 is exposed, so that the air contacts only the lower side of the color changing member 2. When acetic acid is contained in the air, the acetic acid neutralizes with the basic reagent of the color changing member 2. After a start of use, at a short time, it only reacts with the basic reagent impregnated on the lower side of the color change member 2 and there is almost no acetic acid reaching the upper side, so the lower side of the color change member 2 Only the reagent neutralizes, which changes the color of the pH indicator. Since the change in color of this pH indicator is visible from the outside, as shown in FIG. 8, it can be seen that only the lower side of the color changing member 2 has changed color.

  Since the color changing member 2 has air permeability, air flows toward the upper side of the color changing member 2. When time passes after the start of use, neutralization of the reagent on the lower side of the color change member 2 proceeds, and acetic acid contained in the air reaches the middle part of the color change member 2 and is impregnated in the middle part of the color change member 2 Neutralization reaction occurs with the reagent, and the middle part of the color changing member 2 changes color. In this way, since the color changes from the lower side to the middle part, the upper side, the color changing member 2 gradually spreads out with the passage of time.

  Here, the progress of the color change of the color changing member 2 is proportional to the product of the concentration of harmful substance and the time of exposure to the harmful substance (exposure time). The speed of progress of the color change of the color changing member 2 can be adjusted by the type (air permeability) of the base of the color changing member 2, the amount of the reagent impregnated into the base, and the like. If the number of reagents is reduced, the rate of progress of color change of the color changing member 2 will be faster, while if the number of reagents is increased, the rate of progress of color change of the color changing member 2 can be made slower. Moreover, if the air permeability of the base of the color changing member 2 becomes high, the speed of progress of the color change of the color changing member 2 becomes fast, and if the air permeability of the base of the color changing member 2 becomes low, It is possible to slow the progress of the color change.

  In this embodiment, a period in which the adsorptive power of the harmful substance by the adsorptive member 200 can be exhibited is checked in advance, and a period in which the adsorptive power of the harmful substance by the adsorptive member 200 can be exhibited, and The speed of progression of the color change of the color changing member 2 is set so as to correspond to the size of the area where the color change has occurred.

  That is, for example, when one half of a period in which the adsorptive power of the harmful substance by the adsorptive member 200 can be exerted has passed, the discolored area of the discolored member 2 becomes half of the entire area of the discolored member 2 after excision. The speed of progression of the color change of the color changing member 2 can be set. The discolored area of the discoloring member 2 may be the dimension in the vertical direction of the discolored area of the discolored member 2.

  The period in which the adsorbing power of the harmful substance by the adsorbing member 200 can be exhibited can be investigated as follows. For example, the harmful substance of a predetermined concentration is filled in the sealed bag, and the adsorption member 200 and the indicator 1 are stored, and the concentration change of the harmful substance in the bag is detected over time. The time from when detection of the concentration change of the harmful substance is started to when the concentration change hardly disappears is a period in which the adsorbing power of the harmful substance by the adsorbing member 200 can be exhibited. If this period and the period in which the color of the color change member 2 changes from the lower side to the first mark portion 44 and the second mark portion 46 are the same, the speed of progression of the color change of the color change member 2 is set. Good.

  Alternatively, the time from when detection of the concentration change of the harmful substance is started to when the concentration change hardly disappears is a period in which the adsorptive member 200 can exhibit the adsorptive power of the harmful substance. The speed of progression of the color change of the color changing member 2 may be set such that this period is the same as the time required for the color of the color changing member 2 to change from the lower side to the upper end. Then, the period in which the color of the color change member 2 changes from the lower side to the first mark portion 44 and the second mark portion 46 is the same as the period in which 70% to 80% of the adsorption capacity of harmful substances by the adsorption member 200 is reached. The speed of progression of the color change of the color change member 2 may be set so that In that case, apart from the first mark portion 44 and the second mark portion 46, a period during which the adsorptive member 200 can not exert the adsorptive power of harmful substances, ie, the adsorptive member 200 loses its adsorptive power, and the use limit of the adsorptive member 200 You may provide the mark which warns of.

  As a means to speed up the progress of the color change of the color changing member 2, as shown in FIG. 9 and FIG. 10, the containing member 3 is stored with the ventilation member 7 having air permeability overlapped with the color changing member 2. There is a way to The ventilation member 7 can be configured by a member similar to the base of the color changing member 2. The ventilation member 7 is also exposed to the outside of the housing member 3 only on the lower side, similarly to the color changing member 2. By the ventilation member 7 overlapping the color changing member 2, air can easily flow to the upper side of the color changing member 2. As a result, the amount of harmful substances directed to the upper side of the color changing member 2 is increased, so that the speed of progression of the color changing of the color changing member 2 becomes faster.

  The speed of progression of the color change of the color changing member 2 will be described based on the graph shown in FIG. The horizontal axis of the graph shown in FIG. 11 is the time integral value (ppm · hr) of the concentration of harmful substances, and the larger the value is, the larger the value is on the right. The vertical axis is the length (mm) of the discolored part of the discoloring member 2 and becomes longer toward the upper side. The fact that the discolored portion of the discoloring member 2 is long is synonymous with the fact that the discolored region of the discoloring member 2 is wide.

  In the graph, “reagent reference amount” indicates a case where the amount of the reagent impregnated in the base of the color change member 2 is a predetermined amount. The predetermined amount can be set to any amount. The “reagent −40% amount” is a case where the base of the color changing member 2 is impregnated with a reagent in an amount of −40% (40% reduction) of the reagent in the “reagent standard amount”. “Reagent reference amount (with ventilation member)” means that the same amount of reagent as the “reagent reference amount” is impregnated into the base of the color changing member 2 and the ventilation member 7 is provided as shown in FIG. is there.

  When the same time integral value of concentration is seen, the color change length of "reagent-40% amount" is longer than the color change length of "reagent standard amount". Further, in the “reagent standard amount (with ventilation member)”, the color change length is significantly longer than in the other cases. This means that the reaction sensitivity has been greatly improved. Thus, the effect of the presence of the ventilation member 7 appears more prominently than adjusting the amount of reagent.

(Method of manufacturing indicator 1)
Next, a method of manufacturing the indicator 1 will be described. First, a filter paper to be a base of the color changing member 2 is prepared. The filter paper is large enough to take a plurality of substrates, and can be, for example, 12 cm square. Also, a chemical solution to be impregnated is prepared. For acetic acid A mixed solution of 26 ml of 0.5% aqueous sodium metasilicate solution and 108 ml of 0.1% pH indicator solution is prepared. For ammonia, prepare a mixture of 36.6 ml of 0.2% phosphoric acid aqueous solution and 100 ml of 0.04% pH indicator solution.

  The filter paper is impregnated with the chemical solution, and excess filter paper is wiped off using unused filter paper. Thereafter, the filter paper is put in a desiccator and dried under reduced pressure, and the dried filter paper is taken out from the desiccator and cut into a desired size to obtain a substrate of the color changing member 2. When the ventilation member 7 is provided, a filter paper not impregnated with the above-mentioned chemical solution is prepared, and a filter paper not impregnated with this chemical solution and a filter paper impregnated with the above-mentioned chemical solution are bound using a paper clinch.

  Next, the color change member 2 is placed between the front side resin sheet 4 and the rear side resin sheet 5 and heated to bond the front side resin sheet 4 and the rear side resin sheet 5 together, and the color change member 2 at a predetermined position. Hold.

(Operation and effect of the embodiment)
As described above, when the indicator 1 according to this embodiment is used, the receiving member 3 can be opened by cutting a part of the lower side of the receiving member 3 along the cutting line 42 Only the lower side of the color changing member 2 can be exposed from the opening. Then, for example, by placing the indicator-attached adsorption member 200 inside the display case 100, the harmful substance is adsorbed to the adsorption member 200. Further, the harmful substance is in direct contact with the discolored member 2 of the indicator 1 only on the part exposed from the housing member 3, and the harmful substance is not in direct contact with the part covered with the housing member 3. Therefore, the portion of the color changing member 2 in contact with the harmful substance is discolored early, and the portion covered by the accommodating member 3 is discolored late. With the passage of time, the harmful substance gradually enters the other part from the portion exposed from the housing member 3 in the color changing member 2, and the discolored area of the color changing member 2 spreads.

  Therefore, the entire detection agent is not discolored at one time as in the conventional example, but after the discolored member 2 is discolored, the discolored area gradually spreads with the passage of time, If the area is narrow, it is known that there is room for replacement of the suction member 100, and if the area is wide, it is known that exchange of the suction member 100 is imminent. Therefore, the period in which the adsorption force of the adsorption member 200 can be exhibited can be intuitively grasped by the size of the color change area of the color change member 2.

  Further, since the first mark portion 44 and the second mark portion 46 are provided in the housing member 3, when the discolored area of the color changing member 2 reaches the first mark portion 44 and the second mark portion 46, the suction is performed. It can be easily seen that the member 200 is at the end of its life and it is time to replace it. Therefore, since anyone can easily and inexpensively grasp the replacement time of the adsorption member 200, the environment of the space in which the adsorption member 200 is placed can be favorably maintained.

  Alternatively, when the discolored area of the discoloring member 2 reaches the first mark portion 44 and the second mark portion 46, a period of 70% to 80% of the adsorption capacity of the harmful substance by the adsorbing member 200 is reached. The speed of progression of the color change of the color changing member 2 may be set. By this, the adsorption performance is lowered, and the adsorbent 200 can be appropriately replaced before the environment is adversely affected.

(Other embodiments)
The embodiments described above are merely illustrative in every respect and should not be construed as limiting. Furthermore, all variations and modifications that fall within the equivalent scope of the claims fall within the scope of the present invention.

  In the above embodiment, a part of the color changing member 2 is exposed by cutting off a part of the containing member 3, but the present invention is not limited to this, a hole or a notch is formed in the containing member 3. A part may be exposed. In addition, a part of the housing member 3 is made of a harmful substance permeable film, and before use, the harmful substance permeable film is covered with a harmful substance nonpermeable film, and at the start of use, the harmful substance nonpermeable The film may be peeled off. Also in this case, only a part of the color changing member 2 can be brought into contact with the outside air to cover other parts.

  As described above, the present invention can be used, for example, inside a display case.

1 Indicator 2 Discoloring member 3 Housing member 7 Ventilation member 40 Discoloring member placement area (colored part)
42 Tear-off line 44 1st mark part 45 adsorptive substance display part 46 2nd mark part 100 Display case 200 adsorption member

Claims (6)

An adsorbing member for adsorbing a substance;
In a suction member with an indicator provided with an indicator indicating the replacement time of the suction member,
The indicator is a color changing member that changes color in response to the substance.
A non-transmissive member that does not transmit the substance, and a storage member that stores the color-change member so as to be visible from outside
The housing member is configured to be capable of contacting only part of the color changing member with the outside air and covering the other part.
The storage member is provided with a cutting line for cutting out part of the storage member from the other part and exposing only a part of the color changing member at the start of use of the indicator.
At a portion where the storage member is cut off at the start of use of the indicator, an adsorptive substance display unit is provided on which the name of the substance adsorbed by the adsorptive member is displayed,
The indicator-attached adsorption member according to claim 1, wherein the color-changing member is configured such that the discolored area becomes wider as a period in which the adsorption force of the substance by the adsorption member can be exerted becomes shorter. An adsorbing member for adsorbing a substance;
In a suction member with an indicator provided with an indicator indicating the replacement time of the suction member,
The indicator is a color changing member that changes color in response to the substance.
A non-transmissive member that does not transmit the substance, and a storage member that stores the color-change member so as to be visible from the outside;
The housing member is configured to be capable of contacting only part of the color changing member with the outside air and covering the other part.
The storage member includes a discoloring member disposition area in which the discoloring member is disposed, and the discoloring member disposition region is a portion colored in a predetermined color for each substance adsorbed by the adsorption member, and the discoloring member And a light transmitting portion having a light transmitting property that makes the light visible from the outside,
The indicator-attached adsorption member according to claim 1, wherein the color-changing member is configured such that the discolored area becomes wider as a period in which the adsorption force of the substance by the adsorption member can be exerted becomes shorter . In the suction member with an indicator according to claim 1 or 2,
A suction member with an indicator, wherein the storage member is provided with a user-enterable entry area . In an indicator used with an adsorption member for adsorbing a substance,
  The indicator is a color changing member that changes color in response to the substance.
  A non-transmissive member that does not transmit the substance, and a storage member that stores the color-change member so as to be visible from the outside;
  The housing member is configured to be capable of contacting only part of the color changing member with the outside air and covering the other part.
  The storage member is provided with a cutting line for cutting out part of the storage member from the other part and exposing only a part of the color changing member at the start of use of the indicator.
  At a portion where the storage member is cut off at the start of use of the indicator, an adsorptive substance display unit is provided on which the name of the substance adsorbed by the adsorptive member is displayed,
  The color-changing member is used together with the adsorbing member characterized in that the discolored area becomes wider as the period during which the adsorption force of the substance by the adsorption member can be exerted becomes shorter. indicator. In an indicator used with an adsorption member for adsorbing a substance,
  The indicator is a color changing member that changes color in response to the substance.
  A non-transmissive member that does not transmit the substance, and a storage member that stores the color-change member so as to be visible from the outside;
  The housing member is configured to be capable of contacting only part of the color changing member with the outside air and covering the other part.
  The storage member includes a discoloring member disposition area in which the discoloring member is disposed, and the discoloring member disposition region is a portion colored in a predetermined color for each substance adsorbed by the adsorption member, and the discoloring member And a light transmitting portion having a light transmitting property that makes the light visible from the outside,
  The color-changing member is used together with the adsorbing member characterized in that the discolored area becomes wider as the period during which the adsorption force of the substance by the adsorption member can be exerted becomes shorter. indicator. Oite the indicator according to claim 4 or 5,
The aforementioned receiving member, indicator, characterized in that the entry space available entry by the user is provided.