JP4640804B2 - Chemical inclusion body - Google Patents

Description

  The present invention relates to a liquid holding sheet impregnated with various kinds of chemical liquids, and a chemical liquid enclosing body that is hermetically stored in a storage body.

  The present applicant has previously proposed a wet sheet for cleaning that is suitably used for cleaning, polishing and protecting hard surfaces (see Patent Document 1). The cleaning wet sheet is impregnated with a predetermined amount of a cleaning agent and the like, and a liquid holding sheet made of a fiber material or a foam material is liquid-retained on one surface of a first member that is hermetically stored in a container. The liquid sustained-release sheet | seat which has lower air permeability than a sheet | seat and consists of a fiber material is arranged. Prior to the use of the wet sheet for cleaning, an opening is provided in a part of the storage body, so that the chemical solution is discharged to the outside from the opening. The liquid holding sheet is used to hold the chemical liquid in the storage body until the cleaning wet sheet is used. In addition, it is used to prevent a large amount of chemical solution from being released through the opening at the time of use.

  In order to apply a chemical to a target surface having a large area, it is necessary to impregnate a liquid holding sheet with a large amount of chemical. However, if the liquid holding sheet is impregnated with a large amount of chemical solution at a high impregnation ratio of, for example, 500% by weight or more, for example, wrinkles or twists may enter the liquid holding sheet in the storage body due to an impact such as transportation. In particular, when the storage body is in a flat bag shape as described in Patent Document 1 and is used without taking out the liquid holding sheet stored in the storage body, There is a risk that uniform application of the chemical solution may be impaired.

JP 2004-105710 A

  Accordingly, an object of the present invention is to provide a chemical liquid encapsulant whose performance is further improved as compared with the above-described prior art.

The present invention includes a liquid holding sheet impregnated with a predetermined amount of a chemical solution, and a liquid-impermeable storage body that has an opening that seals and stores the liquid holding sheet and is openable.
The object is achieved by providing a chemical liquid enclosure in which the liquid holding sheet and the inner surface of the storage body are joined in a state where the liquid holding sheet is stored in the storage body.

  According to the chemical liquid enclosure of the present invention, even when a large amount of chemical liquid is impregnated in the liquid holding sheet, the liquid holding sheet is less likely to become wrinkles or twist in the storage body.

  The present invention will be described below based on preferred embodiments with reference to the drawings. FIG. 1 shows a perspective view of a chemical liquid coating material (hereinafter also simply referred to as a coating material) provided with the chemical liquid enclosure of the present invention. The coating material 1 contains, for example, a cleaning agent or a polishing agent, and is suitably used for cleaning or polishing a hard surface such as a flooring. The coating material 1 is composed of two members 10 and 20. Prior to use, these members 10 and 20 are separate bodies.

  As shown in FIG. 2, the chemical liquid enclosure that is the first member 10 includes a storage body 11 in which a predetermined amount of chemical liquid is enclosed. In the storage body 11, a liquid holding sheet 12 impregnated with a chemical solution is hermetically stored. That is, the chemical liquid enclosure includes the liquid holding sheet 12 impregnated with the chemical liquid and the storage body 11 that hermetically stores the liquid holding sheet 12.

  The liquid holding sheet 12 is made of, for example, a fiber material or a foam material, and is stored in a storage body 11 having a flat bag shape. The liquid holding sheet 12 has a rectangular shape slightly smaller than the storage body 11. The storage body 11 in the state shown in FIG. 1 and FIG. 2 hermetically stores the liquid holding sheet 12 impregnated with the chemical solution, and the storage body 11 has an opening sealed so as to be able to be opened. In addition, the chemical liquid impregnated in the liquid holding sheet 12 can be discharged to the outside through an opening formed by unsealing (this will be described later).

  The container 11 is made of a liquid impermeable material. In detail, the storage body 11 is comprised from the 1st liquid impervious sheet 11a and the 2nd liquid impervious sheet 11b which consist of a laminate of a film, a film layer, and metal foil, for example. Both liquid-impermeable sheets 11a and 11b are of the same type. The liquid-impermeable sheets 11a and 11b have the same shape, and both have a vertically long rectangular shape in plan view. The storage body 11 is formed in a bag shape by joining two liquid-impermeable sheets 11a and 11b that are superposed on each other and joining the four sides thereof.

  The liquid-impermeable sheets 11a and 11b have a tear strength when tearing along one direction thereof is lower than a tear strength when tearing along a direction orthogonal thereto, and in that direction when tearing in one direction. It has a straight-cut property that tears straight. The one direction coincides with the longitudinal direction of the liquid-impermeable sheets 11a and 11b. That is, the liquid-impermeable sheets 11a and 11b have a tear strength when tearing along the longitudinal direction lower than a tear strength when tearing along the width direction. In order to impart directionality to the tear strength, for example, a uniaxially stretched film may be used for at least one of the film layers constituting the liquid-impermeable sheets 11a and 11b. A uniaxially stretched film has a tear strength when tearing along the stretching direction lower than the tear strength when tearing along a direction orthogonal thereto. In the present invention, the uniaxially stretched film means a synthetic resin film that is remarkably oriented with respect to the longitudinal direction or the transverse direction in order to impart tearability, and has the intended tearability. Any stretched film that is slightly oriented in the other direction may be used.

  The first liquid impermeable sheet 11a is provided with a knob 15 at a position near one end in the longitudinal direction. The knob 15 is formed from a part of the first liquid-impermeable sheet 11a. The knob 15 is formed by being in a non-bonded state with the first liquid-impermeable sheet 11a. The knob 15 is a part that becomes a trigger for forming the opening 13 by utilizing the straight cut property of the first liquid-impermeable sheet 11a. By grasping the knob 15 by hand and pulling it toward the other end, the first impermeable sheet 11a is torn with a predetermined width, and the opening 13 is formed. The area to be torn is referred to as a scheduled opening area 14.

  Before the application material 1 is used, the first liquid-impermeable sheet is not torn, and the liquid-holding sheet 12 stored in the storage body 11 is kept sealed. Prior to use of the coating material 1, the knob 15 is grasped by hand, and the planned opening region 14 is torn and removed in the longitudinal direction of the container 11 as shown in FIG. 3. As a result, an opening 13 is formed in the first liquid-impermeable sheet 11a. Then, the chemical liquid impregnated in the liquid holding sheet 12 can be released through the opening 13. The area of each opening 13 is preferably 5 to 13,000 mm 2 from the viewpoint of controlling the degree of discharge of the chemical solution. For the same reason, the ratio of the total area of the openings 13 to the area of the first liquid-impermeable sheet 11a, that is, the opening ratio is preferably 0.1 to 50%, particularly 4 to 33%.

  The second member 20 shown in FIG. 1 includes a liquid sustained release sheet 21 and a top sheet 22. As shown in FIG. 4, both sheets 21 and 22 are overlapped and joined and integrated. The liquid sustained release sheet 21 has a rectangular shape that is substantially the same size as the container 11. The surface sheet 22 has the same size as the length of the liquid sustained release sheet 21. The surface sheet 22 extends laterally from both sides in the longitudinal direction of the liquid sustained-release sheet, and forms a pair of flaps 23 and 23 in the second member 20. The purpose of use of the flap 23 will be described later. The liquid sustained release sheet 21 and the top sheet 22 are integrated by joining the long side of the liquid sustained release sheet 21 to the top sheet 22 as shown in FIG.

  Prior to use of the coating material 1 of the present embodiment, the members 10 and 20 are separate bodies. When using the coating material 1, as shown in FIG. 1, the liquid sustained release sheet 21 in the second member 20 is the first liquid impervious side on the side where the opening 13 in the storage body 11 is formed. It arrange | positions so that the sheet | seat 11a may be opposed. That is, the liquid sustained release sheet 21 and the storage body 11 are used by being laminated. The coating material 1 set in this state is used by being mounted on the tool 30 shown in FIG. A tool 30 shown in FIG. 5 includes a flat head portion 31 to which the coating material 1 of this embodiment can be attached, and a rod-shaped handle 33 connected to the head portion 31 via a universal joint 32. The head portion 31 has a rectangular shape that is substantially the same size as the first member 10. The coating material 1 is attached to the head portion 31 such that the second liquid-impermeable sheet 11 b (see FIG. 2) in the storage body 11 faces the lower surface of the head portion 31. At this time, the flaps 23, 23 in the second member 20 are folded back to the upper surface side of the head portion 31. Further, the flap is pushed into a plurality of flexible pieces 34 that form radial slits provided in the head portion 31. As a result, the coating material 1 is fixed to the head portion 31. In this state, the head unit 31 is pressed against an application target such as flooring to apply the chemical solution.

  Thus, in the present embodiment, as shown in FIGS. 6A and 6B, the liquid holding sheet 12 and the inner surface of the storage body 11 in a state where the liquid holding sheet 12 is stored in the storage body 11. And are joined. Both are joined by two joining portions 16 formed at positions close to the respective end portions in the longitudinal direction of the liquid holding sheet 12 along the longitudinal center line of the liquid holding sheet 12. By this joining, even when the liquid holding sheet 12 is impregnated with a large amount of chemical liquid, the liquid holding sheet 12 becomes difficult to become wrinkled or twisted. As a result, the chemical liquid is uniformly released from the liquid holding sheet 12, and uneven coating of the chemical liquid is difficult to occur.

  The liquid holding sheet 12 and the container 11 can be joined by, for example, fusion by heat sealing, adhesion by an adhesive, or the like. From the viewpoint of preventing the bonding strength between the liquid holding sheet 12 and the container 11 from being lowered in a state where the liquid holding sheet 12 is impregnated with the chemical solution, it is preferable to bond the two by heat sealing.

  In the case where the liquid holding sheet 12 and the container 11 are joined by heat sealing, it is preferable that the liquid holding sheet 12 and the container 11 contain resins that are compatible with each other. As for the liquid holding sheet 12, it is preferable that a heat-fusible fiber is included. The heat-fusible fiber may be a fiber composed of a single component, or may be a bicomponent composite fiber such as a core-sheath type or a side-by-side type. When the heat-fusible fiber is a composite fiber, it is preferable to use a fiber having a composition of polyethylene terephthalate / low melting point polyethylene terephthalate, polypropylene / polyethylene, or polyethylene terephthalate / polyethylene.

  In particular, the liquid holding sheet 12 is preferably made of a fiber assembly including the above-described fibers. Moreover, it is desirable that the liquid holding sheet 12 can be impregnated with a large amount of chemical liquid and has excellent chemical liquid release properties. As such a material, in the case of a fiber material, a fiber aggregate such as bulky paper or a nonwoven fabric is suitable, and an airlaid nonwoven fabric, a needle punched nonwoven fabric or the like is particularly preferable. As specific examples of the fibers, in addition to the above-described fibers, any one or both of natural fibers and chemical fibers can be used. Examples of natural fibers include wood pulp. Examples of chemical fibers include rayon and acetate which are regenerated fibers, polyolefin fibers such as polyethylene and polypropylene which are synthetic fibers, polyester fibers, polyamide fibers such as nylon, and polyacrylonitonyl fibers.

  The liquid holding sheet 12 is formed as an integral or separate multilayer structure, and the layer facing the opening 13 in the liquid holding sheet 12 of the multilayer structure (hereinafter referred to as the first layer) is composed of an airlaid nonwoven fabric mainly composed of synthetic fibers. The layer adjacent to the first layer (hereinafter referred to as the second layer) is particularly preferably composed of paper or nonwoven fabric mainly composed of cellulosic fibers. In the liquid holding sheet 12 having such a multilayer structure, even when the chemical liquid is impregnated at a high impregnation rate, the first layer mainly composed of synthetic fibers facing the opening 13 is made of cellulosic fibers adjacent to the first layer. Since the impregnating solution retention is lower than that of the second layer mainly comprising the main component, the chemical solution is impregnated and retained in the second layer mainly comprising the cellulosic fibers. Therefore, it is possible to prevent the chemical solution from being scattered from the liquid holding sheet 12 when the container 11 is opened, or to release a large amount of the chemical solution at the beginning of the release of the chemical solution. As a result, the sustained release of the chemical solution is excellent. Note that “mainly composed of synthetic fibers” means that the weight ratio of synthetic fibers is a majority. The same applies to “mainly composed of cellulosic fibers”.

  The liquid holding sheet 12 having a multilayer structure can have a two-layer structure of a first layer and a second layer, for example. The liquid holding sheet 12 can also have a three-layer structure for the purpose of further improving the heat sealability between the liquid holding sheet 12 and the storage body 11. In this case, the liquid holding sheet 12 includes a first layer facing the opening 13, a second layer adjacent to the first layer, and a third layer adjacent to the second layer. The first layer and the third layer are mainly composed of synthetic fibers, while the second layer is mainly composed of cellulosic fibers.

The liquid holding sheet 12 has a density of 0.02 to 0.2 g / cm ³ , particularly 0.03 to 0.03, in terms of increasing the holding capacity of the chemical liquid and improving the release of the chemical liquid during the application of the chemical liquid. It is preferably 15 g / cm ³ . Moreover, it is preferable that the liquid holding sheet 12 has a basis weight of 20 to 400 g / m ² , particularly 60 to 200 g / m ² . When the basis weight is within this range, the holding capacity can be made sufficiently large, and the processability of the liquid holding sheet 12 is also improved.

  The liquid holding sheet 12 is preferably impregnated with as much chemical as possible. When the chemical solution is, for example, a flooring cleaning agent or a polish, and considering the case of applying the flooring in a general household with one coating material 1, 500 to 3000% of the weight of the liquid holding sheet 12 in the state before impregnation. In particular, it is about 500 to 2500%.

  On the other hand, as the container 11, a laminate sheet made of a laminate of a thermoplastic resin film and a metal foil such as aluminum can be used, and in particular, the container 11 that is a surface facing the liquid holding sheet 12. The inner surface is preferably composed of a sealant layer mainly composed of a polyolefin resin such as polypropylene or polyethylene. As a specific example of the laminate sheet, for example, four layers of a sealant layer mainly composed of a stretched polyethylene terephthalate layer / aluminum foil layer / stretched polypropylene layer / unstretched polypropylene were laminated and bonded in the order of lamination from the outer surface to the inner surface. The thing which consists of a structure is mentioned.

  As shown in FIGS. 6A and 6B, the storage body 11 has an opening 13 that can be opened in one surface, and the liquid holding sheet 12 and the inner surfaces of the storage body 11 on the other surface side. And are joined. That is, in the container 11, the surface where the opening 13 is formed is different from the surface where the liquid holding sheet 12 is joined. From another point of view, the liquid holding sheet 12 is not joined to both inner surfaces of the container 11 that face each other. As a result, the chemical liquid retainability of the liquid holding sheet 12 is less likely to be impaired, and the chemical liquid impregnated in the liquid holding sheet 12 is smoothly discharged to the outside through the opening 13.

  The bonding portion 16 is advantageous in that the higher the bonding strength and the larger the bonding area, the harder the wrinkle is generated on the liquid holding sheet 12 and the less the occurrence of twisting. As a bonding state of the joint portion 16, when the bonded liquid holding sheet 12 and the container 11 are peeled off, the surface of the liquid holding sheet 12 is destroyed, and the container 11 has a part of the constituent fibers of the liquid holding sheet 12 The strength that remains is preferable. Specifically, the adhesive strength of the joint portion 16 is preferably 100 cN / 15 mm or more, particularly 150 cN / 15 mm or more (a 180 ° peel test by a tensile strength tester, a chuck-to-chuck distance of 100 mm, a tensile speed of 300 mm / min). In the liquid holding sheet 12, since the liquid holding property of the part which contributed to adhesion | attachment is impaired, it is preferable to adhere | attach adhesion on the surface of the liquid holding sheet 12. FIG. In addition, the total area of the joints 16 is preferably 3 to 20%, particularly 6 to 20%, and particularly 10 to 20% with respect to the area of the liquid holding sheet 12.

  The formation pattern of the joining part 16 that joins the liquid holding sheet 12 and the container 11 is not limited to that shown in FIGS. For example, as shown in FIG. 7A, a single joint 16 may be formed over the entire longitudinal direction of the liquid holding sheet 12 along the longitudinal center line of the liquid holding sheet 12. Further, as shown in FIG. 7B, a pair of joint portions 16 that extend in the width direction of the liquid holding sheet 12 may be formed at positions of the respective end portions in the longitudinal direction of the liquid holding sheet 12. 7A and 7B, similarly to FIGS. 6A and 6B, in the container 11, the surface on which the opening 13 is formed and the liquid holding sheet 12 are used. The surface to be joined is different.

  When the joining portion is formed by heat sealing, a so-called solid joining pattern can be adopted as shown in FIG. Alternatively, as shown in FIGS. 8B and 8C, a pattern in which joints are intermittently formed so that non-joints are formed between the joints can be employed. In the intermittent pattern shown in FIG. 8B, the joint portion extends in the lateral direction. In the intermittent pattern shown in FIG. 8C, the joint extends in an oblique direction. Instead of these joining patterns, a pattern shown in FIG. 8D can be adopted. The joining pattern shown in FIG. 8 (d) is composed of a lot of joined portions having a floral pattern formed intermittently.

  The liquid sustained release sheet 21 in the second member 20 used in combination with the chemical liquid inclusion body that is the first member 10 is a single fiber sheet made of a fiber material, or a laminate of a plurality of identical or different fiber sheets. Consists of the body. The liquid sustained release sheet 21 once diffuses the chemical solution released from the liquid holding sheet 12 throughout the liquid sustained release sheet, and releases them at a rate lower than the rate at which the chemical solution is released from the liquid holding sheet 12. Thus, it is used for the purpose of gradually releasing a predetermined range of drug solution from the initial stage to the final stage of application to a large area application target.

  The liquid sustained release sheet 21 preferably contains hydrophilic fibers. The hydrophilic fiber is a main component in the liquid sustained-release sheet 21 and is mainly used for imparting a retention and diffusion effect of the chemical liquid to the liquid sustained-release sheet 21. From this viewpoint, the blending amount of the hydrophilic fiber is 60 to 95% by weight, preferably 65 to 80% by weight, based on the weight of the liquid sustained release sheet 21. Examples of hydrophilic fibers that can be used include pulp, cotton, and rayon. It is particularly preferable to use pulp.

The liquid sustained-release sheet 21 preferably contains thermoplastic fibers such as heat-sealing fibers in addition to hydrophilic fibers. This increases the strength and heat sealability of the liquid sustained release sheet 21. The blending amount of the thermoplastic fiber is 5 to 40% by weight, preferably 20 to 35% by weight, based on the weight of the liquid sustained release sheet 21. As the thermoplastic fiber, for example, a single fiber made of various thermoplastic resins, a core-sheath type, or a side-by-side type composite fiber can be used. Specifically, polyethylene single fiber, polyethylene terephthalate / low melting point polyethylene terephthalate composite fiber, polyethylene terephthalate / polyethylene composite fiber, polyethylene terephthalate / poly (ethylene-vinyl alcohol) composite fiber, polypropylene / polyethylene composite fiber, polypropylene / Poly (ethylene-vinyl acetate) composite fiber. Depending on the method for producing the liquid sustained-release sheet 21, for example, when the liquid sustained-release sheet 21 is produced by wet papermaking, the thermoplastic fibers are preferably short fibers of several millimeters to several tens of millimeters.

Regardless of whether the liquid sustained-release sheet 21 is composed of one sheet or a sheet laminate, the liquid sustained-release sheet 21 has a basis weight of 20 to 350 g / m ² , particularly 40 to 200 g / m ² . It is preferable from the viewpoint that sufficient sustained release performance can be exhibited and excessive impregnation of the chemical solution is prevented.

  There is no restriction | limiting in particular in the manufacturing method of the liquid sustained release sheet | seat 21. FIG. For example, the liquid sustained release sheet 21 can be manufactured by various nonwoven fabric manufacturing methods such as the spunlace method and the melt blown method. It can also be produced by wet papermaking.

  The liquid sustained release sheet 21 preferably has a large number of irregularities on the surface. Thereby, the contact area with the other member located on the upper and lower surfaces of the liquid sustained release sheet 21 is reduced. As a result, it is possible to reduce the excessive release of the chemical that is likely to occur at the initial stage of application, and to further improve the sustained release property. It is preferable that this convex part is formed over the whole sheet | seat. As the convex portion, for example, a rib shape or a dot shape is used. The liquid sustained release sheet 21 of the present embodiment has a concave portion between the convex portions, and is formed with irregularities over the entire sheet. The concave portions and the convex portions are alternately arranged in the longitudinal direction and the width direction of the sheet. The shape of the concave portion is a shape obtained by inverting the convex portion. In order to provide unevenness on the liquid sustained release sheet 21, it is preferable to perform embossing, particularly steel match embossing.

  The surface sheet 22 bonded to the liquid sustained release sheet 21 is liquid permeable and is preferably made of a fiber material. The top sheet 22 serves as an application surface of the chemical solution when the coating material 1 is used, and is used for the purpose of improving the operability during coating and protecting the liquid sustained-release sheet 21. It is also used for the purpose of further controlling the release of the chemical solution. In order to improve the operability at the time of application, the topsheet 22 preferably has a large number of convex portions on the side facing the application target surface. Thereby, the contact area with the application target surface is reduced, the friction during application is reduced, and the application operability can be improved. The shape of the convex portion formed on the top sheet 22 can be the same as that of the liquid sustained release sheet 21.

The surface sheet 22 is made of, for example, paper manufactured by wet papermaking, various nonwoven fabrics, or a composite material thereof. It is preferable that the surface sheet 22 has a basis weight of 10 to 100 g / m ² , particularly 20 to 80 g / m ² from the viewpoint of satisfying the sheet strength necessary for application and not requiring unnecessary cost.

  As a kind of chemical | medical solution used by this embodiment, the cleaning agent and glossing agent of a flooring are mentioned, for example. The cleaning agent is an agent intended to dissolve away dirt that cannot be removed by dry cleaning, such as soil dust, sebum, and oil dirt, and wipe it off. The polish is an agent for the purpose of polishing and protecting flooring. The polish may have a cleaning function. Details of the cleaning agent and the like are described, for example, in paragraphs [0032] to [0038] of Japanese Patent Application Laid-Open No. 2004-105710 related to the earlier application of the present applicant. In addition to these, antibacterial agents, antibacterial agents, repellent components such as mites and pests, antifouling agents, UV-resistant agents, and the like can be appropriately used as the chemical solution.

  The coating material 1 of the present embodiment using the chemical solution as described above is particularly suitable for cleaning flooring, but is used for cleaning and polishing of hard surfaces other than this, such as automobile bodies and leather shoes, antifouling, and the like. You can also.

  As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment. For example, in the above-described embodiment, the container 11 and the liquid sustained release sheet 21 are separate before the application material 1 is used, and are stacked and used when a chemical solution is applied to an application target. Instead, the container 11 and the liquid sustained release sheet 21 may be laminated in advance and at least partially joined. In this case, it is preferable to provide the container 11 with an opening means that allows the chemical solution to be released from the container 11 before using the coating material 1. Examples of such opening means include those described in JP-A-10-127549.

  In addition, when the liquid sustained-release sheet 21 has sufficient strength, the liquid sustained-release sheet 21 may be used as a chemical liquid application surface without using the top sheet 22. Further, the liquid sustained-release sheet 21 and / or the surface sheet 22 may not be provided with a convex portion.

  Hereinafter, the present invention will be described in more detail with reference to examples. However, the scope of the present invention is not limited to such examples. Unless otherwise specified, “%” means “% by weight”.

[Example 1]
A three-layer airlaid nonwoven fabric was used as the liquid holding sheet. The first layer was composed of 25% pulp and 75% core-sheath type heat-fusible composite fiber having a composition of polyethylene terephthalate / polyethylene. The second layer was composed of 70% pulp and 30% core-sheath type heat-fusible composite fiber having a composition of polyethylene terephthalate / polyethylene. The third layer was composed of 20% pulp and 80% core-sheath type heat-fusible conjugate fiber having a composition of polyethylene terephthalate / polyethylene. Each layer was laminated in this order and integrated with a binder resin. The basis weight of the airlaid nonwoven fabric having a three-layer structure was 100 g / m ² , and the basis weight ratio of each layer was first layer: second layer: third layer = 3: 2: 3. This airlaid nonwoven fabric was folded in two and used as a liquid holding sheet. Therefore, the basis weight of the liquid holding sheet was 200 g / m ² . The dimension was 225 mm x 75 mm.

  A laminate sheet made of a thermoplastic resin film and an aluminum foil was used as a container for accommodating the liquid holding sheet. The structure of the laminate sheet is a structure in which four layers of stretched polyethylene terephthalate layer / aluminum foil layer / stretched polypropylene layer / non-stretched polypropylene sealant layer as a main component are laminated and bonded in the order of lamination from the outer surface to the inner surface. It had a straight cut property in the direction. The dimension of the laminate sheet was 270 mm × 95 mm. Two laminate sheets are stacked so that the inner surface of the laminate sheet, that is, the surface on the sealant layer side, is opposed, and three of the four sides of the laminate sheet are heat-sealed, and a bag-like storage body having an opening on one side. Formed. A knob portion was formed on the laminate sheet.

  A liquid holding sheet was inserted into the bag from the opening of the container. Next, a seal bar heated to a predetermined temperature was pressed from the outside of the storage body, and the liquid holding sheet and the inner surface of the storage body were fused by heat sealing to form a joint. The pressing of the seal bar was performed from the surface opposite to the surface where the opening induction region and the knob portion of the storage body are formed. The pattern of the joint was as shown in FIGS. 6 (a) and 6 (b). Each joint portion had a width of 12 mm, and the length was 40 mm on one side and 60 mm on the other side.

  Next, a nozzle was inserted into an opening formed on one side of the container, and the container was filled with a chemical solution using the nozzle. The chemical solution is an aqueous polish that contains 25% by weight of an acrylic resin emulsion. The filling amount of the chemical solution was such an amount that the impregnation rate was 1100% with respect to the weight of the dry liquid holding sheet. Finally, the opening formed on one side of the container was sealed by heat sealing. Thus, the chemical | medical solution enclosure which is the 1st member shown in FIG.1 and FIG.2 was obtained.

As a liquid sustained-release sheet, a mixed fiber raw material of kraft pulp / thermoplastic fiber (polypropylene (core) / polyethylene (sheath) composite fiber) = 75/25 (weight ratio) was used and obtained by a normal wet papermaking method. Two sheets of paper having a basis weight of 30 g / m ² were overlapped, and further, an uneven shape was formed by embossing with a steel match and bonded. Furthermore, as a surface sheet, a mixture of kraft pulp / thermoplastic fiber (polypropylene (core) / polyethylene (sheath) composite fiber) / thermoplastic fiber (heat-fusible polyester fiber) = 30/60/10 (weight ratio) Using fiber raw material, heat roll nonwoven fabric (polyester (core) / polyethylene (sheath) composite fiber) basis weight of 18 g / m ² is pasted together in a wet papermaking drying process to make a sheet with a basis weight of 46 g / m ² , and steel What was uneven-shaped by match heat embossing was used. Then, the top sheet and the liquid sustained release sheet were integrated as shown in FIG. 4 to obtain a second member. Thereby, the chemical | medical solution coating material which consists of a 1st member and a 2nd member was obtained.

[Comparative Example 1]
In the chemical liquid encapsulant as the first member, a chemical liquid coating material was obtained in the same manner as in Example 1 except that the liquid holding sheet and the inner surface of the storage body were not joined.

[Evaluation]
About the chemical | medical solution application | coating material obtained by the Example and the comparative example, the 1st member 5 sheets and the 2nd member 5 sheets were piled up respectively, and the length of 50 mm x 110 mm x height 280 mm in a paper box of the first member The knob was stored so that the knob was on the bottom (the direction of the second member is not limited). Then, the following drop test was performed using this paper box, and the degree of occurrence of wrinkles and twisting of the liquid holding sheet in the first member and the uniform application property of the chemical solution were evaluated. The results are shown in Table 1.

[Drop test]
The paper box housed so that the knob portion of the first member was at the bottom was dropped straight onto the concrete floor from the height of 80 cm and 20 cm, and a drop test was performed.

[Degree of occurrence of wrinkles and twisting of liquid holding sheet]
○ No wrinkles or twists occur △ Small wrinkles or twists occur × Large wrinkles or twists occur (shrinks to less than 90% of the initial length of the liquid holding sheet)

[Uniform application of chemicals]
○ Can be applied evenly △ Vertical stripes enter along the application direction and uniform application is impossible × Large vertical stripes enter along the application direction, uniform application is not possible, and the application area is reduced

  As is apparent from the results shown in Table 1, it can be seen that, in the chemical solution coating material of the example, the occurrence of wrinkles and creases in the liquid holding sheet is suppressed as compared with the comparative example, whereby the chemical solution can be applied uniformly. .

It is a perspective view which shows one Embodiment of a chemical | medical solution application material. It is the II-II sectional view taken on the line in FIG. It is a perspective view which shows the state of the chemical | medical agent enclosure (1st member) before use. It is the IV-IV sectional view taken on the line in FIG. It is a perspective view which shows the use condition of the chemical | medical solution application material shown in FIG. It is the top view and sectional drawing which show embodiment of a chemical | medical agent enclosure (1st member). It is a top view which shows another embodiment of a chemical | medical agent enclosure (1st member). It is a schematic diagram which shows the joining pattern of a junction part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chemical solution coating material 10 Drug inclusion body (1st member)
DESCRIPTION OF SYMBOLS 11 Storage body 11a, 11b Liquid impervious sheet 12 Liquid holding sheet 13 Opening 14 Opening induction | guidance | derivation area | region 16 Joining part 20 2nd member 21 Liquid sustained release sheet 22 Top sheet

Claims (7)

A liquid holding sheet impregnated with a predetermined amount of a chemical solution, and a liquid-impermeable storage body that has an opening that sealably stores the liquid holding sheet and is openably sealed,
In a state where the liquid holding sheet is stored in the storage body, the liquid holding sheet and the inner surface of the storage body are joined ,
The storage body has a flat bag shape, and the storage body has the opening sealed to be openable on one surface thereof, and the liquid holding sheet and the inner surface of the storage body on the other surface side. Is a chemical liquid enclosure in which the liquid holding sheet and the inner surface of the storage body are not joined on one side thereof . Chemical inclusion body according to claim 1, wherein an inner surface of the housing body and the liquid retention sheet are joined by heat sealing. The chemical | medical solution enclosure of Claim 1 or 2 in which the said liquid holding sheet contains at least 1 type of the heat-fusible composite fiber which has a composition of a polyethylene terephthalate / low melting-point polyethylene terephthalate, a polypropylene / polyethylene, or a polyethylene terephthalate / polyethylene. The chemical liquid enclosure according to any one of claims 1 to 3 , wherein the liquid holding sheet is impregnated with 500 to 3000% of the chemical liquid with respect to the weight of the liquid holding sheet before impregnation. The chemical liquid enclosure according to claim 2, wherein the liquid holding sheet and the inner surface of the container are joined by heat sealing by pressing a seal bar from the outside of the container. The container has a structure in which four layers, ie, a stretched polyethylene terephthalate layer / aluminum foil layer / stretched polypropylene layer / a sealant layer mainly composed of unstretched polypropylene, are laminated and adhered in the order of lamination from the outer surface to the inner surface. Item 6. A drug solution inclusion body according to any one of Items 1 to 5 . The liquid holding sheet includes a first layer facing the opening, a second layer adjacent to the first layer, and a third layer adjacent to the second layer, and the first layer and the third layer are made of synthetic fibers. The chemical liquid enclosure according to any one of claims 1 to 6, wherein the second layer contains cellulosic fibers .

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