Liquid storage member for coating tool

Abstract

Provided is a liquid storage member for a coating tool that reduces the amount of plastic and the impact on the environment by replacing a liquid storage tube for ink or the like, which has been formed from a plastic such as polypropylene, with a material that includes a paper base material. A liquid storage member for a coating tool, characterized by having at least three layers including a paper base material laminate and an outer layer, the paper base material laminate having: an inner layer of a paper base material, and an intermediate layer formed on the outer surface side of the inner layer and being a metal layer or a silicon dioxide vapor deposition layer, the outer layer being formed on the outer surface side of the inner layer and including a paper base material, the liquid storage member for a coating tool having a structure in which the paper base material laminate is wound in a spiral shape and a structure in which the outer layer including a paper base material is wound in a spiral shape on the outer surface side of the intermediate layer, and having a layer including a polyolefin resin between at least one of the inner layer and the intermediate layer and the intermediate layer and the outer layer.

Description

TECHNICAL FIELD

[0001] The present application relates to a liquid storage member for a coating tool that uses a paper base material instead of plastic, and reduces environmental impact. BACKGROUND

[0002] For example, an ink storage tube for a pen tool such as a ballpoint pen stores one end (the front end) thereof by being pressed into and fitted to a ballpoint pen refill or a relay member that supports the ballpoint pen refill, which is a pen member, in a barrel of the pen tool.

[0003] Furthermore, in order to ensure ease of molding and visual recognition of the amount of ink, a transparent or translucent plastic such as polypropylene has been used as the ink storage tube.

[0004] However, in recent years, the problem of microplastics flowing into the ocean has been a concern, and the momentum to solve the problem of the global environment is increasing, such as avoiding the use of disposable plastics.

[0005] A proposal that focuses on deplasticizing each component that constitutes a pen tool has also been made, and Patent Literature 1 discloses a pen tool that has a barrel that is formed by spiral molding using a composite material that is formed by laminating a synthetic resin having barrier properties, a metal such as aluminum, and the like on a paper base material.

[0006] In order to improve water resistance and gas barrier properties, the barrel used by the pen tool has a structure in which an aluminum foil label paper whose back surface is formed of kraft paper and a backing paper are laminated from the outer surface side of the barrel, and then a polyethylene layer is laminated on the inner surface, followed by a polyester film having an aluminum vapor deposition film on the outer side.

[0007] According to this barrel, by using a composite material that includes a paper base material, it is possible to provide a pen tool that can maintain content resistance and durability while achieving low environmental impact.

[0008] On the other hand, Patent Literature 2 proposes an aqueous ink storage member using an ink storage tube of a multilayer structure that is formed by forming one or more layers of another resin on the inside of a storage tube base body formed of a biodegradable resin.

[0009] As a result, the storage tube base body formed of a biodegradable resin does not cause dimensional changes due to swelling in the aqueous ink, and is biodegradable over time, so it is possible to reduce the amount of waste disposal.

[0010] PRIOR ART DOCUMENTS

[0011] PATENT LITERATURE

[0012] Patent Literature 1: Japanese Patent Application Publication No. 62-70097

[0013] Patent Literature 2: Japanese Patent Application Laid-Open (JP-A) No. 2001-146091 SUMMARY

[0014] PROBLEMS TO BE SOLVED BY THE INVENTION

[0015] As described above, the article using the biodegradable resin, the paper base material is suitable for low environmental pollution, and particularly if a raw material containing paper pulp or paper is used as the base material, it is considered that an article which can replace plastic can be provided, which takes environmental problems into consideration.

[0016] The present application is made in view of the foregoing, and by replacing a liquid- containing tube of ink or the like, which is molded using plastic such as polypropylene, with a material containing a paper base material, it is possible to achieve a plastic-free.

[0017] SOLUTION TO THE PROBLEM

[0018] The liquid-containing member for a coating tool of the present application is characterized by having at least three layers of a paper base material laminate having an inner layer of a paper base material and an intermediate layer formed on the outer surface side of the inner layer and being a metal layer or a silicon dioxide vapor deposition layer, and an outer layer formed on the outer surface side of the inner layer and containing a paper base material, a structure in which the paper base material laminate is wound in a spiral shape, and a structure in which the outer layer containing a paper base material is wound in a spiral shape on the outer surface side of the intermediate layer, and having a layer of an adhesive containing a polyolefin resin in at least one of between the inner layer and the intermediate layer and between the intermediate layer and the outer layer.

[0019] It is preferable that the length in the width direction of the paper base material laminate be 4 to 20 mm.

[0020] It is preferable that the density of the paper base material of the inner layer be 0.8 g / cm 3 and the like.

[0021] It is preferable that the paper base material of the inner layer be glassine paper, parchment paper, or vulcanized fiber.

[0022] It is preferable that the liquid-containing member for a coating tool have a structure in which the paper base material laminate is contacted and wound in a spiral shape so that the adjacent surfaces thereof do not overlap each other, and a structure in which the outer layer containing a paper base material is wound in a spiral shape so that the adjacent surfaces thereof contact each other, in the length direction of the liquid-containing member for a coating tool.

[0023] It is preferable that the liquid-containing member for a coating tool have two or more sets of the paper base material laminate

[0024] The contact portions of the aforementioned paper base material laminates with each other and the contact portions of the aforementioned outer layers containing paper base materials with each other are preferably staggered by 1 mm or more and by less than half the width of the aforementioned paper base material laminates or the aforementioned outer layers containing paper base materials in the length direction of the liquid storage member for a coating tool.

[0025] The aforementioned liquid storage member for a coating tool is preferably a paper refill for a pen tool.

[0026] Effects of the Invention

[0027] According to the present invention, in the paper base material laminates, at least either of the inner layer and the intermediate layer and the intermediate layer and the outer layer is adhered by a polyolefin resin adhesive or an adhesive containing a polyolefin resin and another resin, so that the interlayer adhesion of the liquid storage member for a coating tool is improved, and the leakage of ink to the outside of the liquid storage member can be suppressed. In order to suppress the leakage of ink, it is more effective to use a wide paper base material laminate and to increase the intervals of the seams 4 of the paper base material laminates with each other and the intervals of the seams 4' of the outer layers with each other.

[0028] Thus, according to the present invention, it is possible to provide a liquid storage member for a coating tool which reduces the use of plastic and reduces the environmental impact. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 FIG. 1 is a diagram showing an example of the configuration of a refill containing a liquid storage member for a coating tool of the present invention. Figure 1 (a) of FIG. 1 is a front view of the appearance of the refill, Figure 1 (b) of FIG. 1 is an A-A arrow sectional view of the refill.

[0030] Figure 2 FIG. 2 is a diagram showing: a form (2a) in which an adhesive layer is provided between the inner layer and the intermediate layer in a three-layer structure of the inner layer, the intermediate layer, and the outer layer of the liquid storage member for a coating tool of the present invention, a form (2b) in which an adhesive layer is provided between the intermediate layer and the outer layer, and a form (2c) in which an adhesive layer is provided between the inner layer, the intermediate layer, and the outer layer.

[0031] Figure 3Fig. 3 is a diagram showing the form of the multilayer structure of the paper substrate laminate of the liquid storage member for a coating tool constituting the present application [paper substrate laminate (inner layer 1 + adhesive layer 5 + intermediate layer 2), adhesive layer 5, inner layer 1, adhesive layer 5, inner layer 1, adhesive layer 5, paper substrate laminate (intermediate layer 2 + adhesive layer 5 + inner layer 1), adhesive layer 5, outer layer 3, adhesive layer 5, outer layer 3] (3a), and the form of the multilayer structure [paper substrate laminate (inner layer 1 + adhesive layer 5 + intermediate layer 2), adhesive layer 5, paper substrate laminate (inner layer 1 + adhesive layer 5 + intermediate layer 2), adhesive layer 5, outer layer 3, adhesive layer 5, and outer layer 3] (3b). DETAILED DESCRIPTION

[0032] The liquid storage member for a coating tool of the present application will be described in detail below with reference to the drawings.

[0033] Figure 1 Fig. 1 is a diagram showing an example of the configuration of a refill containing the liquid storage member for a coating tool of the present application 10, Figure 1 (a) of Fig. 2 shows a front view of the appearance of the refill, Figure 1 (b) of Fig. 2 shows an A-A arrow cross-sectional view of the refill.

[0034] Figure 1 In the present embodiment, for example, the refill housed in the shaft cylinder of a ballpoint pen is provided with: a liquid storage member for a coating tool 10 (hereinafter also simply referred to as "liquid storage member 10") that takes paper as a substrate and is an elongated cylindrical ink storage tube that stores an unillustrated ink; a joint 11 mounted to the front end of the liquid storage member 10; and a ballpoint pen tip 12 mounted to the front end of the joint 11 as a pen member.

[0035] Specifically, the joint 11 is formed with a cylindrical rear end portion that engages with the liquid storage member 10, and a cylindrical front end portion having an outer diameter larger than the rear end portion, and the ballpoint pen tip 12 is mounted to the front end portion. In addition, in the rear end portion of the joint 11, an adhesive is applied in advance to the engaging portion with the liquid storage member 10 so as to have a certain engagement strength, and in this state, the joint 11 is engaged with the liquid storage member 10 by pressing the rear end portion of the joint 11 into the inside of the front end of the liquid storage member 10. Thus, the liquid storage member 10 and the ballpoint pen tip 12 are connected in a manner that allows the ink to flow through, with the aid of the joint 11.

[0036] The aforementioned liquid storage member 10 has at least three layers including a paper base material laminate and an outer layer 3, the paper base material laminate having an inner layer 1 of a paper base material, and an intermediate layer 2 formed on the outer surface side of the aforementioned inner layer 1, and being a metal layer or a silicon dioxide vapor deposition layer, the outer layer 3 being formed on the outer surface side of the aforementioned intermediate layer 2, and including a paper base material, the liquid storage member 10 having a structure in which the aforementioned paper base material laminate is wound in a spiral shape with the inner layer 1 on the inner side, and the aforementioned outer layer including a paper base material is wound on the outer surface side of the aforementioned intermediate layer 2 in a spiral shape, and having a layer of an adhesive including a polyolefin resin between at least one of the aforementioned inner layer 1 and intermediate layer 2, and the aforementioned intermediate layer 2 and outer layer 3.

[0037] The aforementioned liquid storage member 10 has at least three layers of an inner layer 1, an intermediate layer 2, and an outer layer 3 in contact with a liquid, and a layer 5 of an adhesive including a polyolefin resin (hereinafter referred to simply as "adhesive layer 5") between at least one of the aforementioned inner layer 1 and intermediate layer 2, and the aforementioned intermediate layer 2 and outer layer 3. Figure 2 c shows a form in which the adhesive layer 5 is provided between both of the aforementioned inner layer 1 and intermediate layer 2, and the aforementioned intermediate layer 2 and outer layer 3. In this three-layer structure, the inner layer 1 and intermediate layer 2 are a paper base material laminate in which a metal layer or a silicon dioxide vapor deposition layer is laminated on the surface of a paper base material. As described above, the adhesive layer 5 can be interposed between the paper base material laminate.

[0038] As the paper base material constituting the inner layer 1, various well-known materials such as fine paper, medium paper, one-side glossy paper, kraft paper, one-side glossy kraft paper, bleached kraft paper, board paper, white board paper, liner, micro-coated paper, coated paper, art paper, cast coated paper, glassine paper, parchment paper, and hard board paper can be used.

[0039] The density of these paper base materials is preferably 0.8 g / cm 3 By using a paper base material having a density of 0.8 g / cm 3 The above, thereby imparting sufficient water resistance and oil resistance.

[0040] The paper base material constituting the inner layer 1 is more preferably glassine paper, parchment paper, or hard board paper, and has a density of 0.8 g / cm 3

[0041] Glassine paper is a paper having a high density and high transparency, and is produced by highly beating raw pulp to increase the specific surface area, and performing papermaking, and then treating the paper after papermaking with a super calender to densify while enhancing the bonding of the cellulose fibers to each other. In the present application, a glassine paper having a mass per unit area of 20 to 50 g / m 2 ​glassine paper. By using glassine paper as the paper base material constituting the inner layer 1, water resistance and oil resistance are easily imparted. In addition, glassine paper having a mass per unit area of 20 to 50 g / m 2 may be used. The thickness of the glassine paper is usually 20 to 50 μm, and preferably 20 to 30 μm.

[0042] Parchment paper and hardboard are made by enhancing the direct bonding of cellulose fibers to each other through treatment with concentrated sulfuric acid and zinc chloride solution during the manufacturing process, that is, by increasing the density of hydrogen bonds of cellulose between cellulose fibers. Thus, if parchment paper and hardboard are used as the paper base material constituting the inner layer 1, the generation of paper dust can be effectively suppressed.

[0043] Parchment paper, for example, has a mass per unit area of 20 to 100 g / m 2 , and preferably, a paper having an oil absorption degree of 13 g / m 2 when a mineral oil is used instead of water according to the water absorption degree test method (Cobb method) for paper and board paper is used. The thickness of the parchment paper is usually 20 to 100 μm, and preferably 20 to 60 μm.

[0044] Hardboard is easily made thicker than parchment paper due to differences in reactivity during the manufacturing process. Thus, it is suitable as the paper base material in cases where thick paper is required. If the compressive strength of the paper tube portion after the formation of the liquid storage member 10 and the ease of handling during manufacturing are considered, the thickness of the hardboard is usually 0.08 to 1 mm, and preferably 0.1 to 0.5 mm. In addition, the density of the hardboard is higher than that of general paper tube base paper, and is usually 0.8 to 1.4 g / cm 3 , and in the present application, 0.8 to 1.3 g / cm 3 is preferable if the strength of the paper tube portion and the ease of obtaining are considered.

[0045] In addition, resin impregnation treatment or glass coating treatment can be performed on the parchment paper and hardboard. By performing the aforementioned treatment, the bonding of cellulose fibers to each other is further enhanced, and the generation of paper dust can also be suppressed when these papers are used as the paper base material constituting the inner layer 1.

[0046] The intermediate layer 2 is a metal layer or a silicon dioxide vapor deposition layer. The metal layer can be provided by adhering a metal foil such as an aluminum foil to one side of the paper base material with an adhesive containing a polyolefin resin, or by performing electron beam vapor deposition of aluminum or an alloy of aluminum and zinc under vacuum.

[0047] Here, the adhesive containing a polyolefin resin used in the present application is described. The adhesive containing a polyolefin resin can be an adhesive formed of one or two or more polyolefin resins, or an adhesive in which the polyolefin resin is mixed with other resins.

[0048] The polyolefin resin specifically includes, in addition to polyethylene-based ionomers, polypropylene ionomers, polypropylene elastomers, polyethylene elastomers, high-density polyethylene, low-density polyethylene, and the like, modified polyolefin resins such as maleic anhydride-modified polypropylene. Among them, polypropylene ionomers and maleic anhydride-modified polypropylene, and the like are preferred.

[0049] Among the other resins, specifically, acrylic copolymers, ethylene-vinyl alcohol copolymers (EVOH), ethylene-acrylic acid copolymers (EAA), ethylene-methacrylic acid copolymers (EMAA), epoxy resins, carbodiimide crosslinking agents, ethylene-vinyl acetate copolymers, or polyvinyl alcohol, and the like can be given.

[0050] In the case where the polyolefin resin is mixed with other resins, the ratio of the polyolefin resin in the total amount of the adhesive is about 60 to 97% by weight, and preferably 90 to 97% by weight. In addition, the ratio of the polyolefin resin in the total of the polyolefin resin and other resins is about 68 to 98% by weight, and preferably 93 to 98% by weight.

[0051] The adhesive containing a polyolefin resin of the present application is used in the form of a dispersion liquid or an emulsion liquid resin in which a polyolefin resin, or a mixture of a polyolefin resin and other resins is used as a base polymer. In the aforementioned resin liquid, an additive such as a silane coupling agent can be added as needed. Among them, dispersion liquid adhesives such as polypropylene ionomers and maleic anhydride-modified polypropylene are preferred from the viewpoint of excellent adhesion and handling properties.

[0052] The adhesive containing a polyolefin resin is applied to at least one of between the inner layer 1 and the intermediate layer 2, and between the intermediate layer 2 and the outer layer 3. That is, as shown in Figure 2 Fig. 1, an adhesive layer 5(a) can be provided between the inner layer 1 and the intermediate layer 2, Figure 2 Fig. 2, an adhesive layer 5(b) can be provided between the intermediate layer 2 and the outer layer 3, and Figure 2 Fig. 3, an adhesive layer 5(c) can be provided between the inner layer 1, the intermediate layer 2, and the outer layer 3. Figure 2c) By applying the adhesive containing the polyolefin resin having excellent adhesion and ink resistance to the paper, the interlayer adhesion of the liquid storage member between the inner layer 1, the intermediate layer 2 and the outer layer 3 can effectively prevent the ink from leaking to the outside of the liquid storage member 10. Here, the ink resistance refers to the degree of inhibition of the dissolution of the adhesive resin component into the ink. If the ink resistance is insufficient, the strength of the ink cartridge is reduced, and the increase in the volatile amount is caused. In addition, the appearance of the ink cartridge is deteriorated due to the ink leakage. In the case of using the adhesive containing the polyolefin resin, the compatibility with the ink is low, and thus the polyolefin resin is not dissolved into the ink, and the effect of the ink resistance can be expected.

[0053] Note that in the present application, as long as any one of the inner layer 1, the intermediate layer 2 and the outer layer 3 is adhered by the adhesive containing the polyolefin resin, other adhesives, such as general-purpose adhesives, for example, vinyl acetate resin-based, acrylic resin-based and polyvinyl alcohol, can be used in combination.

[0054] The adhesive containing the polyolefin resin is applied in a manner of being raised around the center of the inner layer 1 or the intermediate layer 2. Then, the adhesive is spread to the entire adhesive surface while pressing the inner layer 1 and the intermediate layer 2, and the two layers are adhered in a manner of not leaving air bubbles in the adhesive portion and not having an adhesive defect portion. After the inner layer 1 and the intermediate layer 2 are adhered, pressure fixation is performed until the adhesive is cured.

[0055] The adhesive containing the polyolefin resin is applied to the inner layer 1 or the intermediate layer 2 in an amount of 5 to 50 g / m2, preferably 5 to 25 g / m2. 2 The adhesive containing the polyolefin resin is applied to the inner layer 1 or the intermediate layer 2 in an amount of 5 to 50 g / m2, preferably 5 to 25 g / m2. 2

[0056] The inner layer 1 and the intermediate layer 2 of the liquid storage member 10 can be formed of the same thickness of the paper base material and the paper base material laminate using the metal layer or the silica vapor deposition layer, or can be formed by appropriately combining the paper base materials of different thicknesses and the paper base material laminates using the metal layer or the silica vapor deposition layer.

[0057] In the paper base material laminate, the ratio of the thickness of the paper base material to the thickness of the metal layer or the silica vapor deposition layer is about 2 / 1 to 1200 / 1.

[0058] ​After the intermediate layer 2 is tightly bonded to the inner layer 1, it is cut into strips 4-20 mm wide using a paper slitting machine or similar equipment to obtain a paper substrate laminate in the form of a strip. Next, the aforementioned paper substrate laminate is spirally wound onto a mandrel (paper tube manufacturing machine) used for processing the liquid receiving component 10, making the inner layer 1 the inner side. It should be noted that, for the mandrel, in order to facilitate the pulling of the mandrel after the formation of the inner layer 1, intermediate layer 2, and outer layer 3, it is preferable to pre-treat the surface with a suitable lubricant, or to apply an appropriate amount of lubricant to the surface of the inner layer 1 (paper substrate) wound onto the mandrel. Then, to bond the outer layer 3, an adhesive, such as an adhesive containing polyolefin resin, is applied to the outer intermediate layer 2.

[0059] The paper substrate laminate is more preferably cut into strips 4 to 20 mm wide, preferably 5 to 15 mm wide. If such a wide paper substrate laminate is used and formed into a spiral roll, the required length of the liquid receiving member 10 can be achieved even without extensive winding. As a result, the number of contact surfaces between the paper substrates, i.e., the number of seams 4, is small, which can suppress leakage of the liquid contained in the liquid receiving member 10.

[0060] The outer layer 3 is formed by further winding the paper substrate into a spiral shape on the outside of the intermediate layer 2. The outer layer 3 is also preferably formed using a paper substrate with a width of 4 to 20 mm, specifically 6 to 15 mm. Similar to the paper substrate laminate, this is because reducing the number of seams 4' can suppress liquid leakage within the liquid receiving member 10.

[0061] The paper substrate constituting the outer layer 3 can be the same paper substrate constituting the inner layer 1. Alternatively, the aforementioned adhesive containing polyolefin resin can be used to adhere the outer layer 3 to the intermediate layer 2. In this case, the coating method and coating amount of the adhesive containing polyolefin resin are the same as those used for coating the inner layer 1 or the intermediate layer 2.

[0062] The ratio of the thickness (μm) of the inner layer 1, the middle layer 2 and the outer layer 3 is usually 20-60:0.025-12:50-200, preferably 20-30:0.025-12:50-200.

[0063] Depending on the type and thickness of the paper substrate, it can also be like... Figure 3 As shown, an inner layer 1 is further sandwiched between the intermediate layer 2 and the outer layer 3. In this case, the intermediate layer 2 and the inner layer 1, or the inner layer 1 and the outer layer 3, can be bonded using an adhesive containing polyolefin resin.

[0064] In addition, the paper substrate laminate can have two or more sets, for example, such as Figure 3As shown, the aforementioned liquid storage member 10 can have a structure (3a) of a paper base material laminate (inner layer 1 + adhesive layer 5 + intermediate layer 2), adhesive layer 5, inner layer 1, adhesive layer 5, inner layer 1, adhesive layer 5, paper base material laminate (intermediate layer 2 + adhesive layer 5 + inner layer 1), adhesive layer 5, outer layer 3, adhesive layer 5, outer layer 3; or, a structure (3b) of a paper base material laminate (inner layer 1 + adhesive layer 5 + intermediate layer 2), adhesive layer 5, paper base material laminate (inner layer 1 + adhesive layer 5 + intermediate layer 2), adhesive layer 5, outer layer 3, adhesive layer 5, and outer layer 3. In the aforementioned multi-layer structure, the ratio of the thickness (pm) of each of the inner layer 1, intermediate layer 2, and outer layer 3 can be the same as in the case of a three-layer structure having each of the inner layer 1, intermediate layer 2, and outer layer 3 as a single layer, and the thickness of each of the inner layer 1, intermediate layer 2, and outer layer 3 present can also be different. The liquid storage member 10 of such a multi-layer structure is a more preferable mode in terms of preventing the leakage and evaporation of liquid.

[0065] As described above, the liquid storage member 10 has a structure in which the paper base material laminates are contacted and wound in a spiral shape so that the adjacent surfaces thereof do not overlap each other in the longitudinal direction of the liquid storage member 10. The overlap of the adjacent surfaces is assumed to be the maximum of 1 mm at the contact site of the paper base material laminates with each other, i.e., at the joint 4. By contacting without overlapping the joint 4 or with the maximum overlap of 1 mm, the leakage of liquid from the joint 4 can be suppressed. If the overlap is more than 1 mm in the joint 4, a height difference is generated in the overlapping portion, which sometimes leads to the leakage of liquid.

[0066] As described above, the liquid storage member 10 has a structure in which the paper base material laminates are contacted and wound in a spiral shape so that the adjacent surfaces thereof do not overlap each other in the longitudinal direction of the liquid storage member 10. The overlap of the adjacent surfaces is assumed to be the maximum of 1 mm at the contact site of the paper base material laminates with each other, i.e., at the joint 4. By contacting without overlapping the joint 4 or with the maximum overlap of 1 mm, the leakage of liquid from the joint 4 can be suppressed. If the overlap is more than 1 mm in the joint 4, a height difference is generated in the overlapping portion, which sometimes leads to the leakage of liquid.

[0067] The liquid storage member 10 produced as described above is completed as follows: after forming the inner layer 1, intermediate layer 2, and outer layer 3, the mandrel is pulled out, the cylindrical molded body is cut to the prescribed length required for the liquid storage member 10 for the coating tool, and dried for several hours under moderate temperature and humidity, thereby completing the liquid storage member 10.

[0068] The liquid storage member 10 obtained is thin in diameter compared to a conventional paper tube or the like, and the outer diameter is generally 20 mm or less, preferably 15 mm or less, and further preferably 10 mm or less, and the lower limit of the aforementioned outer diameter is generally 1 mm or more, and preferably 2 mm or more. The thin-diameter liquid storage member requires strict dimensional accuracy. Thus, the smaller the outer diameter of the liquid storage member 10, the more preferable it is to contact the paper base material laminate such that the outer layer containing the paper base material does not contact the adjacent surface of the paper base material laminate, and to contact the outer layer containing the paper base material to the adjacent surface.

[0069] The tube thickness of the liquid storage member 10 is generally 0.07 to 0.6 mm, and specifically 0.2 to 0.4 mm. By making the tube thickness of the liquid storage member 10 within the aforementioned range, a sufficient amount of liquid can be stored, and the barrier property is improved, and leakage and deterioration of the liquid can be easily suppressed.

[0070] The liquid storage member 10 is stored in the coating tool, and thus there is a certain limit to the size, but the maximum length in the cross section is 1 to 20 mm, and specifically 3 to 10 mm.

[0071] The coating tool of the present application is not limited as long as it has the aforementioned liquid storage member 10, and can be a pen tool of the inner cotton type and the straight liquid type, and can be a cosmetic tool such as an eyeliner, a mascara, and a concealer.

[0072] In the case of a pen tool, the tip of the pen can be a feather, a soft pen, a hard pen, or the like. More specifically, a pen, a ballpoint pen, a marker pen, a felt-tip pen, a corrector, a brush, and the like can be mentioned. At this time, the type of ink stored in the liquid storage member 10 can be water-based (gel) ink and oil-based ink, and either can be used, and if the use of the pen is considered, ink for a ballpoint pen, ink for a pressurized ballpoint pen, or ink for a marker pen can be mentioned.

[0073] In the present application, the coating tool is a pen tool, and the aforementioned liquid storage member 10 is a paper-made refill for a pen tool, and thus the effect of the present application is remarkably exhibited, and is thus preferable.

[0074] Example

[0075] [Example 1]

[0076] [Manufacture of liquid storage member for coating tool]

[0077] A glassine paper (unit area mass 25 g / m 2 , density 1.0 g / cm 3 ) having a thickness of 25 μm was adhered with an adhesive containing a polyolefin resin, Chemipearl S500, manufactured by Mitsui Chemicals, Inc., to an aluminum foil having a thickness of 6.5 μm to form an adhesive layer having a thickness of 6.5 μm, and the total thickness of the adhered paper was 38 μm, and the adhered paper was cut into a width of 13 mm using a slitter.

[0078] The aforementioned adhesive 12 g / m2containing polyolefin resin was applied to the outer side layer of the aluminum foil of the adhering paper in the form of a strip using a roll-type applicator. 2 The glass paper was spirally wound in a single layer around the outer circumferential surface of the mandrel of a paper tube manufacturing machine (Langston) with the glass paper on the inside.

[0079] Next, the coated paper (unit area mass 85 g / m2) cut to a width of 13 mm and a thickness of 66 μm by a raw paper slitter was spirally wound in a single layer around the aluminum foil as the outer side layer of the adhering paper. 2

[0080] At this time, the adhering paper and the coated paper were wound so as not to butt with the adjacent surfaces overlapping each other. In addition, the adhering paper and the coated paper were wound so that the contact portions of the adhering paper and the contact portions of the coated paper were offset by 3 mm in the length direction.

[0081] The resulting spiral tube was cut to a length of 89.3 mm to obtain a liquid- containing member for an application tool having an inner diameter of 3.8 mm. The aforementioned liquid-containing member was used as the paper tube 1.

[0082] [Evaluation of the Liquid-Containing Member for an Application Tool]

[0083] (1) Measurement of volatile reduction

[0084] The resulting paper tube 1 was filled with 0.7 g of the application liquid 1 prepared in the following formulation, and further filled with polybutene to a length of about 10 mm, and the rear end of the application liquid was sealed.

[0085] < Application Liquid 1 > (total amount 100 mass %)

[0086] SPIRON violet C-RH [manufactured by Shikoku Chemicals Corporation] 8%

[0087] SPIRON yellow C-GNH [manufactured by Shikoku Chemicals Corporation] 5%

[0088] Printex #35 [manufactured by Degussa Japan Co., Ltd.] 8%

[0089] Polyvinyl butyral BL-1 [manufactured by Sekisui Chemical Co., Ltd.] 4%

[0090] Polyvinyl butyral BH-3 [manufactured by Sekisui Chemical Co., Ltd.] 0.7%

[0091] Hilac 110H [manufactured by Hitachi Chemical Co., Ltd.] 10%

[0092] ​SOLSPERSE 28000 [manufactured by Lubrizol Japan Ltd.] 1%

[0093] (acid value: 29, weight average molecular weight: about 3400)

[0094] benzotriazole 0.5%

[0095] 3-methoxy-3-methyl-1-butanol 62.8%

[0096] Next, a lid made of stainless steel was pressed into the liquid- containing member end portion on the side opposite the aforementioned sealed portion. The paper tube 1 with both ends plugged was laid horizontally and left to stand in an environment of 50°C and 10% RH for 10 days, and the volatile reduction amount (%) was found from the reduction amount of the coating liquid.

[0097] The volatile reduction amount of the paper tube 1 was 0.51%.

[0098] (2) Bending test

[0099] The paper tube 1 was set with a support point interval of 75 mm, and the center of the paper tube 1 was pressed with a bending wedge jig at a speed of 30 mm / min, and the measured value at the time of bending was taken as the bending strength.

[0100] The bending strength of the paper tube 1 was 1.6 N.

[0101] (3) Bleeding evaluation

[0102] The paper tube 1 filled with the coating liquid 1 was stored with the downward side at 50°C for 4 weeks.

[0103] The bleeding was evaluated visually according to the following evaluation criteria.

[0104] A: Bleeding was not confirmed

[0105] B: Slight bleeding was confirmed

[0106] C: Significant bleeding was confirmed

[0107] In the case of using the paper tube 1, bleeding was not confirmed, and the evaluation was A.

[0108] [Comparative Example 1]

[0109] [Manufacture of liquid-containing member for coating tool]

[0110] In Example 1, an acrylic copolymer (manufactured by 987B Japan Coating Resin Corporation) was used instead of Chemipearl S500 as the adhesive, and otherwise, the liquid-containing member was manufactured in the same manner as in Example 1. The aforementioned liquid-containing member was used as the paper tube 9.

[0111] Evaluation of liquid storage member for coating tool

[0112] The volatile amount measurement, the bending test, and the ink leakage evaluation were performed in the same manner as in Example 1.

[0113] The bending strength of the paper tube 9 was 1.5 N, and the result of the ink leakage evaluation was B. On the other hand, in the volatile amount measurement, the coating liquid 1 was exuded, and thus, it was not meaningful, and was noted as not measurable. The results are shown in Table 1.

[0114] [Comparative Example 2]

[0115] [Manufacture of liquid storage member for coating tool]

[0116] In Example 1, an ethylene-vinyl acetate copolymer (EVA AD-92, manufactured by Showa Denko K.K.) was used instead of Chemipearl S500 as the adhesive, and other than that, the liquid storage member was produced in the same manner as in Example 1. The aforementioned liquid storage member was used as a paper tube 10.

[0117] [Evaluation of liquid storage member for coating tool]

[0118] The volatile amount measurement, the bending test, and the ink leakage evaluation were performed in the same manner as in Example 1.

[0119] The bending strength of the paper tube 10 was 1.2 N, and the result of the ink leakage evaluation was C. In addition, in the volatile amount measurement, the coating liquid 1 was exuded, and thus, it was not measurable. The results are shown in Table 1.

[0120] [Comparative Example 3]

[0121] [Manufacture of liquid storage member for coating tool]

[0122] In Example 1, an ethylene-vinyl acetate copolymer (EVA AD-92, manufactured by Showa Denko K.K.) was used instead of Chemipearl S500 as the adhesive, and other than that, the liquid storage member was produced in the same manner as in Example 1. The aforementioned liquid storage member was used as a paper tube 10.

[0123] [Evaluation of liquid storage member for coating tool]

[0124] The volatile amount measurement, the bending test, and the ink leakage evaluation were performed in the same manner as in Example 1.

[0125] The bending strength of the paper tube 11 was 1 N, and the result of the ink leakage evaluation was C. In addition, in the volatile amount measurement, the coating liquid 1 was exuded, and thus, it was not measurable. The results are shown in Table 1.

[0126] [Example 2]

[0127] [Manufacture of liquid storage member for coating tool]

[0128] In Example 1, the strip-shaped adhesive paper was spirally wound in double layers instead of single layers on the outer circumferential surface of the mandrel of a paper tube manufacturing machine (Langston), and otherwise, the liquid- containing member was obtained in the same manner as in Example 1. The aforementioned liquid- containing member was used as the paper tube 2.

[0129] [Evaluation of liquid-containing member for coating tool]

[0130] The coating liquid 1 was filled in the obtained paper tube 2, and the rear end was sealed with polybutene, and the determination of the volatile loss amount, the bending test, and the ink leakage evaluation were performed in the same manner as in Example 1.

[0131] The volatile loss amount of the paper tube 2 was 0.26%, the bending strength was 2.5 N, and the result of the ink leakage evaluation was A. The results are shown in Table 1.

[0132] [Comparative Example 4]

[0133] [Manufacture of liquid-containing member for coating tool]

[0134] In Example 2, an acrylic copolymer (987B manufactured by Japan Coating Resin Corporation) was used instead of Chemipearl S500 as the adhesive, and otherwise, the liquid- containing member was manufactured in the same manner as in Example 2. The aforementioned liquid- containing member was used as the paper tube 12.

[0135] [Evaluation of liquid-containing member for coating tool]

[0136] The coating liquid 1 was filled in the obtained paper tube 12, and the rear end was sealed with polybutene, and the determination of the volatile loss amount, the bending test, and the ink leakage evaluation were performed in the same manner as in Example 1. The results are shown in Table 1.

[0137] The bending strength of the paper tube 12 was 2 N, and the result of the ink leakage evaluation was A, but the volatile loss amount was as much as 2.89%.

[0138] [Comparative Example 5]

[0139] [Manufacture of liquid-containing member for coating tool]

[0140] In Example 2, an acrylic copolymer (987B manufactured by Japan Coating Resin Corporation) was used instead of Chemipearl S500 as the adhesive, and otherwise, the liquid- containing member was manufactured in the same manner as in Example 2. The aforementioned liquid- containing member was used as the paper tube 12.

[0141] [Evaluation of liquid-containing member for coating tool]

[0142] The obtained paper tube 13 was filled with the coating liquid 1, and the rear end was sealed with polybutene. In the same manner as in Example 1, the measurement of the volatile reduction amount, the bending test, and the ink leakage evaluation were performed.

[0143] The bending strength of the paper tube 13 was 1.9 N. The result of the ink leakage evaluation was B, but the coating liquid 1 leaked, and therefore, was recorded as not measurable. The results are shown in Table 1.

[0144] [Comparative Example 6]

[0145] [Manufacture of liquid storage member for coating tool]

[0146] In Example 2, a vinyl acetate resin (AX-428, manufactured by Showa Denko K.K.) was used instead of Chemipearl S500 as the adhesive, and otherwise, in the same manner as in Example 2, the liquid storage member was manufactured. The aforementioned liquid storage member was used as a paper tube 14.

[0147] [Evaluation of liquid storage member for coating tool]

[0148] The obtained paper tube 14 was filled with the coating liquid 1, and the rear end was sealed with polybutene. In the same manner as in Example 1, the measurement of the volatile reduction amount, the bending test, and the ink leakage evaluation were performed.

[0149] The bending strength of the paper tube 14 was 1.8 N, and the result of the ink leakage evaluation was B. On the other hand, in the measurement of the volatile reduction amount, the coating liquid 1 leaked, and therefore, was recorded as not measurable. The results are shown in Table 1.

[0150] [Table 1]

[0151] Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 2 Comparative Example 4 Comparative Example 5 Comparative Example 6 Paper tube 1 9 10 11 2 12 13 14 Coating liquid 1 1 1 1 1 1 1 1 Volatile reduction (%) 0.51 - - - 0.26 2.89 - - Bending strength (N) 1.6 1.5 1.2 1 2.5 2 1.9 1.8 Leakage of ink A B C C A A B B

[0152] [Example 3]

[0153] [Manufacture of liquid storage member for coating tool]

[0154] In Example 1, the strip-shaped adhering paper was spirally wound in a double layer instead of a single layer on the outer peripheral surface of the mandrel of a paper tube manufacturing machine (Langston), and otherwise, in the same manner as in Example 1, the liquid storage member was obtained. The aforementioned liquid storage member was used as a paper tube 3.

[0155] [Evaluation of liquid storage member for coating tool]

[0156] In Example 1, the paper tube 3 was filled with a coating liquid 2 instead of the coating liquid 1, and otherwise, in the same manner as in Example 1, the measurement of the volatile reduction amount, the bending test, and the ink leakage evaluation were performed. The coating liquid 2 was prepared in the following formulation.

[0157] [Coating liquid 2] (total amount 100 mass%)

[0158] FUJI RED 2510 [Fuji Colorants Co., Ltd.] 8%

[0159] JONCRYL 61J [BASF Japan Ltd.] 6%

[0160] Xanthan gum KELSAN S [Sansho Co., Ltd.] 0.32%

[0161] Isopropyl phosphate 0.5%

[0162] Bioden 421 [Nippon Soda Co., Ltd.] 0.2%

[0163] Benzotriazole 0.3%

[0164] Triethanolamine 1.4%

[0165] Propylene glycol 15%

[0166] Ion exchange water 68.28%

[0167] The volatile loss of the paper tube 4 was 5.59%, the bending strength was 2.5 N, and the result of the ink leakage evaluation was A. The results are shown in Table 2.

[0168] [Example 4]

[0169] [Manufacture of liquid storage member for coating tool]

[0170] In Example 1, the strip-shaped adhering paper was spirally wound in double layers instead of single layers on the outer peripheral surface of the mandrel of the paper tube manufacturing machine (Langston), and otherwise, the liquid storage member was obtained in the same manner as in Example 1. The aforementioned liquid storage member was used as the paper tube 4.

[0171] [Evaluation of liquid storage member for coating tool]

[0172] In Example 1, instead of the coating liquid 1, the coating liquid 3 was filled in the paper tube 4, and otherwise, the determination of the volatile loss, the bending test, and the ink leakage evaluation were performed in the same manner as in Example 1. The coating liquid 3 was prepared in the following prescription.

[0173] <Coating liquid 3> (total amount 100 mass%)

[0174] Vinyblan GV5651 [Nippon Shokubai Co., Ltd.] 80%

[0175] (polyvinyl acetate emulsion; solid content 40%)

[0176] Acid dye Red No. 227 0.22%

[0177] Yellow No. 4 0.34%

[0178] Blue No. 1 0.08%

[0179] Purified water 19.36%

[0180] The volatile matter loss of paper tube 4 was 4.16%, the flexural strength was 2.5 N, and the ink leakage evaluation result was A. The results are shown in Table 2.

[0181] [Example 5]

[0182] [Manufacturing of liquid storage components for coating tools]

[0183] In Example 2, as the bonding paper, a 25 μm thick parchment paper (25 g / m²) was bonded together using an adhesive containing polyolefin resin. 2 Density 1.0 g / cm³ 3 Instead of cellophane, a liquid containing component was obtained using an aluminum foil with a thickness of 6.5 μm. Otherwise, the liquid containing component was obtained in the same manner as in Example 2. The aforementioned liquid containing component was used as a paper tube 5.

[0184] [Evaluation of Liquid Storage Components for Coating Tools]

[0185] Similar to Example 1, the evaporation loss was measured, the bending test was performed, and the ink leakage was evaluated.

[0186] The volatile matter loss of paper tube 5 was 0.42%, the flexural strength was 2.2 N, and the ink leakage rating was A. The results are shown in Table 2.

[0187] [Example 6]

[0188] [Manufacturing of liquid storage components for coating tools]

[0189] In Example 2, 25 μm thick cellophane (25 g / m²) was used as the bonding paper. 2 Density 1.0 g / cm³ 3 Instead of aluminum foil, a 0.4 μm thick silicon dioxide vapor-deposited layer is formed on the paper tube. Otherwise, the liquid storage component is obtained in the same manner as in Example 2. The aforementioned liquid storage component is used as paper tube 6.

[0190] [Evaluation of Liquid Storage Components for Coating Tools]

[0191] Similar to Example 1, the evaporation loss was measured, the bending test was performed, and the ink leakage was evaluated.

[0192] The volatile matter loss of paper tube 6 was 0.79%, the flexural strength was 2.2 N, and the ink leakage rating was A. The results are shown in Table 2.

[0193] [Example 7]

[0194] [Manufacture of liquid storage member for coating tool]

[0195] In Example 2, the adjacent surfaces of the coated paper were not butted against each other, but were overlapped by 1 mm and wound, and otherwise, the liquid storage member was obtained in the same manner as in Example 2. The aforementioned liquid storage member was used as the paper tube 7.

[0196] [Evaluation of liquid storage member for coating tool]

[0197] In the same manner as in Example 1, the volatile weight reduction, the bending test, and the ink leakage evaluation were performed.

[0198] The volatile weight reduction of the paper tube 7 was 0.28%, the bending strength was 2.5 N, and the ink leakage evaluation was A. The results are shown in Table 2.

[0199] [Example 8]

[0200] [Manufacture of liquid storage member for coating tool]

[0201] In Example 2, the contact portions of the coated paper to each other were separated by 5 mm instead of 3 mm, and otherwise, the liquid storage member was obtained in the same manner as in Example 2. The aforementioned liquid storage member was used as the paper tube 8.

[0202] [Evaluation of liquid storage member for coating tool]

[0203] In the same manner as in Example 1, the volatile weight reduction, the bending test, and the ink leakage evaluation were performed.

[0204] The volatile weight reduction of the paper tube 8 was 0.31%, the bending strength was 2.1 N, and the ink leakage evaluation was A. The results are shown in Table 2.

[0205] [Table 2]

[0206] Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Paper tube 3 4 5 6 7 8 Coating liquid 2 3 1 1 1 1 Volatile reduction (%) 5.59 4.16 0.42 0.79 0.28 0.31 Bending strength (N) 2.5 2.5 2.2 2.2 2.5 2.1 Leakage of ink A A A A A A

[0207] Explanation of Reference Numerals

[0208] 10 Liquid storage member for coating tool

[0209] 11 Joint

[0210] 12 Ballpoint pen tip

[0211] 1 Inner layer

[0212] 2 Middle layer

[0213] 3 Outer layer

[0214] 4, 4' Seam

[0215] 5 Adhesive layer

Claims

1. A liquid collection component for a coating tool, characterized in that, It has at least three layers, including a paper substrate laminate and an outer layer. The paper substrate laminate comprises: an inner layer of paper substrate, and an intermediate layer formed on the outer surface of the inner layer, which is a metal layer or a silicon dioxide vapor-deposited layer. The outer layer is formed on the outer surface side of the intermediate layer and includes a paper substrate. The liquid receiving component for the coating tool has the following structure: a structure in which the paper substrate laminate is spirally wound, and a structure in which the outer layer containing the paper substrate is spirally wound around the outer surface of the intermediate layer. At least one of the inner layer and the intermediate layer and the intermediate layer and the outer layer has a layer containing an adhesive comprising a polyolefin resin. The liquid collection component for the coating tool has the following structure: Along the length of the liquid collection component of the coating tool The paper substrate laminate is arranged in a spiral shape such that its adjacent surfaces do not overlap, and the laminate is wound around it. The outer layer containing the paper substrate is wound into a spiral structure such that its adjacent surfaces are in contact with each other.

2. The liquid receiving component for coating tools according to claim 1, wherein, The length of the paper substrate laminate in the width direction is 4 to 20 mm.

3. The liquid receiving component for coating tools according to claim 1, wherein, The density of the inner paper substrate is 0.8 g / cm³. 3 above.

4. The liquid receiving component for coating tools according to claim 1, characterized in that, The inner paper substrate is cellophane, parchment, or hardened cardboard.

5. The liquid receiving component for coating tools according to claim 1, wherein, It has two or more sets of the paper substrate laminate.

6. The liquid receiving component for coating tools according to claim 1, wherein, The contact areas between the paper substrate laminates and each other, and The contact portions of the outer layers containing the paper substrate are staggered by more than 1 mm along the length of the liquid receiving member for the coating tool and are less than half the width of the paper substrate laminate or the outer layer containing the paper substrate.

7. The liquid storage component for coating tools according to claim 1, wherein it is a paper pen refill for pen tools.

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