JP6401763B2 - Paper tube, rolled sheet, and method for manufacturing paper tube - Google Patents

Description

  2. Description of the Related Art Conventionally, a roll sheet such as a toilet roll is known in which a fragrance is imparted to a core paper tube so that a scent can be felt when the product is used.

  For example, it is known that after a paper tube is formed, a fragrance is attached to the predetermined region of the outer peripheral surface of the paper tube by spraying the fragrance composition (FIG. 1).

  Moreover, the fragrance | flavor application layer formed by apply | coating a fragrance | flavor to the inner peripheral surface of a paper tube, the 1st film which is provided in the inner peripheral surface of the fragrance | flavor application layer, and has several opening parts, The inner peripheral surface of a 1st film There is known a paper tube provided with a gas barrier second film which is detachably provided. (Patent Document 1).

Japanese Patent Laid-Open No. 2006-69145

  In the conventional paper tube shown in FIG. 1, the fragrance component is easy to escape from the outer peripheral surface side of the paper tube through a sheet wound around the paper tube. Further, the fragrance component can escape from the inner peripheral surface side of the paper tube through the paper tube base paper. Further, in a so-called multi-rolled sheet having a large number of rolls per roll, the fragrance imparted to the paper tube may be volatilized and disappear before the end of use of the roll.

  Patent Document 1 mentions the persistence of the scent after the start of use, but does not consider the long-term sustainability that is assumed in a multi-rolled sheet.

  In view of the above points, an object of one embodiment of the present invention is to provide a paper tube for a roll-shaped sheet that can maintain a scent for a long period of time.

  In order to solve the above-mentioned problem, a first form of the present invention is a paper tube that becomes a core of a roll-shaped sheet, and includes a cylindrical base paper layer, and a scent sustained release layer laminated on the outside of the base paper layer. A fragrance layer containing a fragrance, a first coating layer laminated on one surface of the fragrance layer, and a second coating layer laminated on the other surface. The first coating layer includes a fragrance weakly permeable layer or a fragrance barrier layer, the second coating layer includes a fragrance weakly permeable layer, the fragrance sustained release layer includes the first coating layer as the base paper. It arrange | positions so that a layer may be opposed.

  In the first embodiment, the perfume layer is not directly laminated on the base paper layer, but the scent sustained release layer constituted by sandwiching the perfume layer between the first cover layer and the second cover layer is used as the base paper. Laminated on the outside of the layer. With this configuration, the volatilization of the fragrance component from the inner peripheral surface and the outer peripheral surface of the fragrance layer can be appropriately adjusted. Specifically, the fragrance component is released directly from the fragrance layer into the atmosphere from the end surface of the fragrance layer, and in other places, the fragrance component passes through the fragrance weakly permeable layer, the sheet, and the base paper. It is gradually released into the atmosphere (released slowly). That is, it is gradually discharged from the outer peripheral surface side of the paper tube through the second coating layer and the sheet, and is gradually released from the inner peripheral surface side of the paper tube through the first coating layer and the base paper layer. Released or not substantially released. Therefore, it is avoided that the scent is rapidly volatilized from the paper tube to the atmosphere, and the scent can be maintained for a long time.

  In the second aspect of the present invention, the base paper layer has another scent sustained release layer inside, and the other scent sustained release layer includes a fragrance layer containing a fragrance and one of the fragrance layers. A third coating layer laminated on the surface and a fourth coating layer laminated on the other surface, wherein the third coating layer includes a fragrance weakly permeable layer or a fragrance barrier layer, The coating layer includes a perfume weakly permeable layer, and the other scent sustained release layer is disposed so that the third coating layer faces the base paper layer.

  According to the second aspect, a scent sustained release layer similar to the scent sustained release layer provided on the outside is additionally provided inside the base paper layer. Thereby, since the fragrance | flavor layer contained in a paper tube becomes multiple, it can respond when a stronger fragrance is desired. And the fragrance | flavor layer contained in said other fragrance | flavor sustained release layer is also pinched | interposed by the 3rd coating layer containing a fragrance | flavor weak permeable layer or a fragrance | flavor barrier layer, and the 4th coating layer containing a fragrance | flavor weakly permeable layer. Therefore, volatilization of the fragrance component from the inner and outer peripheral surfaces of the fragrance layer is appropriately adjusted, and the fragrance component can be gradually released into the atmosphere. Therefore, a stronger scent can be stably released over a long period of time.

  In the third embodiment of the present invention, an opening is provided in the second coating layer.

  According to the third aspect, since the opening is formed in the second coating layer including the fragrance weakly permeable layer, the volatilization of the fragrance can be increased from the location, so that the desired fragrance strength can be increased. The scent release can be adjusted accordingly.

  A fourth aspect of the present invention is a roll-shaped sheet including a paper tube according to any one of the first to third aspects and a sheet wound around the paper tube.

  According to the fourth aspect, the roll-shaped sheet has a paper tube that exhibits the effects described above for the first to third aspects as a core, so that the scent can be maintained for a long period of time. Can be provided.

  A fifth aspect of the present invention has a cylindrical base paper layer and a scent sustained release layer laminated on the outside of the base paper layer, and the scent sustained release layer includes a fragrance layer containing a fragrance, and the fragrance. A first coating layer laminated on one side of the layer and a second coating layer laminated on the other side, wherein the first coating layer comprises a perfume weakly permeable layer or a perfume barrier layer, A paper tube serving as a core of a roll-shaped sheet, wherein the second coating layer includes a perfume weakly permeable layer, and the scent sustained release layer is disposed so that the first coating layer faces the base paper layer. A method of preparing a base paper to be the base paper layer, a step of preparing a scent sustained release film to be the scent sustained release layer, and wrapping the base paper around a core shaft to form the base paper layer And the step of winding the scent sustained release film on the base paper layer to form the scent sustained release layer Including the.

  According to the fifth aspect, it is possible to manufacture a paper tube that exhibits the same effects as the first aspect.

  According to one form of this invention, the paper tube for roll-shaped sheets which can maintain a fragrance over a long period of time is provided.

The schematic of the conventional paper tube to which the fragrance | flavor was provided is shown. The perspective view of the paper tube by one form of this invention, and the elements on larger scale of the end surface of a paper tube are shown. 1 shows a partially enlarged view of an end face of a paper tube according to an embodiment of the present invention. 1 shows a partially enlarged view of an end face of a paper tube according to an embodiment of the present invention. The schematic perspective view of the roll-shaped sheet by one form of the present invention is shown. It is the schematic which shows the manufacturing process of the paper tube by one form of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the drawings are for easy understanding of the description, and are not necessarily drawn according to the actual dimensional ratio.

  FIG. 2A shows a schematic perspective view of a paper tube according to this embodiment. FIG. 2B shows a partially enlarged view of the end surface (cut surface). As shown in FIG. 2B, the paper tube 10 of this embodiment includes a cylindrical base paper layer 20 and a scent sustained release layer 80 laminated on the outside of the base paper layer 20. The scent sustained release layer 80 is a laminate in which a first coating layer 40 including a fragrance weakly permeable layer or a fragrance barrier layer, a fragrance layer 30 including a fragrance, and a second coating layer 50 including a fragrance weakly permeable layer are sequentially stacked. The first covering layer 40 is disposed so as to face the outer peripheral surface of the base paper layer 20.

  In the above configuration, since the sheet 11 is wound around the paper tube 10 (FIG. 5), the fragrance weakly permeable layer (second coating layer 50) is interposed between the fragrance layer 30 and the sheet 11. The volatilization of the fragrance component from the outer peripheral surface of the fragrance layer 30 can be suppressed to some extent. As a result, the fragrance component can be gradually released (slowly released) through the sheet 11 on the outer peripheral surface side of the paper tube 10.

  In addition, a perfume weakly permeable layer or a perfume barrier layer (first covering layer 40) is interposed between the perfume layer 30 and the base paper layer 20. When the fragrance weakly permeable layer is interposed, the amount of the fragrance component volatilized from the inner peripheral surface of the fragrance layer can be suppressed to some extent, so that the fragrance component is externally provided via the base paper layer 20 on the inner peripheral surface side of the paper tube 10. It can be released slowly (to the atmosphere). When the fragrance barrier layer is interposed, volatilization of the fragrance component from the inner peripheral surface of the fragrance layer 30 can be prevented, so that the release of the fragrance component from the inner peripheral surface side of the paper tube 10 can be substantially eliminated. .

  Therefore, the fragrance component is directly released from the fragrance layer 30 into the atmosphere from the end face of the fragrance layer 30 having a small area, and the fragrance component is gradually released from other places or substantially. It can be prevented from being released. That is, it is discharged from the outer peripheral surface side of the paper tube 10 through the second coating layer 50 and the sheet 11, and from the inner peripheral surface side of the paper tube 10, the first coating layer 40 and the base paper layer 20 are discharged. It will remain weakly released through. Therefore, it is avoided that a fragrance is rapidly volatilized outside.

  Thus, since the volatilization of the fragrance | flavor component on the inner peripheral surface side and outer peripheral surface side of the paper tube 10 can be adjusted, the scent can be maintained for a long period of time, for example, several months. Therefore, even when it is used as a paper tube for the multi-rolled roll sheet 12, the user continues until the use of the multi-rolled roll sheet is completed (until the multi-rolled roll sheet is consumed). Can continue to feel the scent.

  Furthermore, in this embodiment, the intensity of the scent does not drop rapidly. Therefore, the scent can be stably maintained until the use is completed with the same strength as the initial stage of use. Therefore, the scent of desired intensity can be made from the initial stage of use to the end of use.

  The base paper layer 20 is cylindrical, and specifically has a hollow cylindrical shape. The base paper layer 20 may be composed of a single layer or a plurality of layers, and may be a flat-wrapped paper tube or a so-called spiral paper tube wound spirally.

The basis weight of the base paper constituting the base paper layer 20, preferable to be 100 to 400 g / ^{m 2,} and more preferably a 130~200g / ^{m 2.} The paper thickness of the base paper is preferably 50 to 800 μm, and more preferably 100 to 400 μm. By setting the basis weight and the paper thickness within the above ranges, appropriate strength and mass can be obtained.

  As shown in FIG. 2, the scent sustained release layer 80 includes a first coating layer 40 including a fragrance weakly permeable layer or a fragrance barrier layer, a fragrance layer 30, and a second coating layer 50 including a fragrance weakly permeable layer. be able to.

  The thickness of the scent sustained release layer 80 is preferably 15 to 400 μm, more preferably 15 to 200 μm, and still more preferably 45 to 145 μm. By setting it as 15 micrometers or more, sufficient intensity | strength of the paper tube 10 is securable, while the 1st coating layer 40, the fragrance | flavor layer 30, and the 2nd coating layer 50 exhibit each function. In addition, when the thickness is 400 μm or less, the paper tube 10 is easily wound during manufacture, and is easily deposited on the base paper on which the base paper layer 20 is formed. In addition, when the thickness of the scent sustained release layer 80 is 100 μm or more, even when the paper tube 10 including each of the base paper layer 20 and the scent sustained release layer 80 is configured, an appropriate strength is maintained. Can do.

  The scent sustained release layer 80 can be a single layer, or a plurality of layers can be used.

  In this embodiment, the first coating layer 40 may include a fragrance weakly permeable layer, and the second coating layer 50 includes a fragrance weakly permeable layer. Although this fragrance | flavor weak permeable layer permeate | transmits the fragrance | flavor (fragrance | flavor component) from the fragrance | flavor layer 30, it is comprised so that the permeation | transmission amount may be suppressed. The fragrance weakly permeable layer is a layer that adjusts the volatilization rate of the fragrance component so that the fragrance is gradually released as compared with the case where the fragrance layer 30 is not exposed on the fragrance layer 30 and the fragrance layer 30 is exposed. is there.

The perfume weakly permeable layer preferably has an oxygen permeability of more than 200 cc / m ² · day · atm and 10000 cc / m ² · day · atm or less, and is preferably 700 to 8500 cc / m ² · day · atm. More preferably, it is 1000 to 7000 cc / m ² · day · atm. Moreover, permeability of carbon dioxide is greater than ^{900cc / m 2 · day · atm} , preferably not more than ^{40000cc / m 2 · day · atm} , when is 2000~35000cc ^/ m 2 · day · atm Preferably, 4000 More preferably, it is ˜30000 cc / m ² · day · atm. The thickness of the perfume weakly permeable layer is preferably 5 to 100 μm, and more preferably 20 to 70 μm.

  The material used for the perfume weakly permeable layer is preferably a resin film. Examples thereof include polyethylene (PE), polystyrene (PS), polypropylene (PP), and polycarbonate.

  Among the above resins, one or a plurality of materials can be appropriately selected according to the kind of the fragrance or the desired scent strength. When a plurality of materials are selected, the resins can be mixed and used, or each resin film can be laminated to be used as a laminate film. Moreover, when the 1st coating layer 40 was a fragrance | flavor weak transmission layer, the kind of the fragrance | flavor weak transmission layer used as the 1st coating layer 40 and the fragrance | flavor weak transmission layer used as the 2nd coating layer 50 And thickness may be the same and may differ.

  The first coating layer 40 may include a fragrance barrier layer. This perfume barrier layer is a layer that has a remarkably low gas (gas) permeability and does not allow perfume component gas emitted from the perfume layer 30 to pass therethrough. The fragrance barrier layer has a function of preventing the fragrance from the fragrance layer 30 from being substantially felt when the fragrance layer 30 is covered with the fragrance barrier layer.

For example, the perfume barrier layer has a permeability of oxygen of 200 cc / m ² · day · atm or less and a permeability of carbon dioxide of 900 cc / m ² · day · atm or less. Since it can prevent suitably, it is preferable. The thickness of the fragrance barrier layer is preferably 5 to 100 μm, and more preferably 10 to 50 μm. Moreover, a fragrance | flavor barrier layer can also be made into a single layer, and can also be made into multiple layers.

  The material used for the fragrance barrier layer is preferably a resin film. For example, ethylene-vinyl alcohol copolymer (EVOH), resin in which styrene elastomer is blended with EVOH, nylon, polyethylene terephthalate (PET), polyvinyl alcohol (PVOH), polyvinylidene chloride, biaxially oriented polypropylene (OPP), etc. Examples include polypropylene. Among these, ethylene-vinyl alcohol copolymer (EVOH) is preferable because of its particularly high gas barrier property. Nylon is preferred because it has a high gas barrier property and a good balance between longitudinal and lateral tear strength.

  Among the above resins, one or a plurality of materials can be appropriately selected according to the kind of the fragrance or the desired scent strength. When a plurality of materials are selected, the resins can be mixed and used, or each resin film can be laminated to be used as a laminate film.

  The perfume barrier layer can be a metal sheet such as a metal foil, or a laminate film obtained by laminating the above-described resin film on a metal sheet.

  The fragrance layer 30 may be formed by applying a liquid or slurry fragrance composition containing a fragrance, and a liquid or slurry fragrance composition containing a fragrance on a substrate such as paper, nonwoven fabric or cloth. It may be formed by impregnating an object. The thickness of the fragrance layer 30 is preferably 5 to 200 μm, and more preferably 40 to 100 μm.

  As the fragrance contained in the fragrance layer 30, known natural or synthetic fragrances can be used. Specific examples include Ryusen Incense, Benzo Incense, Kaigo Incense, Spirit Cat Incense, Clove Oil, Galvanam, Jasmine, Labanam, Mate Tea, Merilot, Mimosa, Musk Tonkin, Myrrh, Oak Moss, Milk Incense, Syringe Incense, Oris, Bachuri, Rose Natural flavors such as marie, lemon, grapefruit, peppermint, mandarin, lime, yuzu, chamomile, lavender, rose, spearmint, sandalwood, vetiver, violet leaf, and extracts thereof, alcohol, ketone, aldehyde, benzaldehyde, benzoic acid, Cinnamic acid, cinnamic aldehyde, cinnamic alcohol, coumarin, ester, indole, ketone, salicylic acid and related compounds, terpenes such as limonene, linalool, citronellol, menthol and geraniol, and combinations of vanillin and the like Perfumes and the like. These may be used alone or in combination as a blended fragrance. The selection of the fragrance may be determined according to the desired fragrance tone. The perfume component can be appropriately diluted with mineral oil such as dipropylene glycol and paraffin oil, castor oil, and vegetable oil such as soybean oil in order to adjust the strength of the fragrance (fragrance).

  In addition, the fragrance layer 30 has a deodorizing substance such as extract of plantain plant, extract of leguminous clara plant, cypress oil, hiba oil, cedar oil, fine oil, camphor oil, etc. It can also be added in types and amounts that do not or do not change.

  When the fragrance layer 30 is formed by application of a composition containing a fragrance, the composition preferably includes a material that forms a layer or a film, and such a material is an adhesive base. More preferred. Moreover, even when it is formed by impregnating a base material such as paper with a composition containing a fragrance, the composition preferably contains a material having a property of forming a layer or a film. More preferably, it contains a base.

  Examples of the adhesive base include polyvinyl alcohol adhesives, natural rubber adhesives, natural rubber latex adhesives, acrylic adhesives, hot melt adhesives, starch adhesives, cellulose adhesives, and vinyl acetate. System adhesives and the like. When the fragrance weakly permeable layer and the fragrance barrier layer are made of resin (the first coating layer 40 and the second coating layer 50 are made of resin), an acrylic adhesive having excellent adhesiveness to the resin is used. And preferred.

  When the fragrance layer 30 is made of a composition containing a fragrance and contains an adhesive base, the fragrance layer 30 is interspersed between the first coating layer 40 and the second coating layer 50. Although it may exist in a predetermined pattern, it is preferable that it exists over the entire surface because adhesion or adhesion to the first coating layer 40 and the second coating layer 50 is enhanced.

The blending ratio of the fragrance contained in the fragrance composition can be appropriately selected depending on the kind of the fragrance and the desired intensity of the fragrance, but is preferably 0.5 to 15 g / m ² , and preferably 3 to 8 g / m ^2. m ² is more preferable. By setting it as the said range, a fragrance can be maintained over a long period of time, and the increase in cost can also be suppressed.

  Moreover, the fragrance | flavor layer 30 can also be comprised as a film which mixed the fragrance | flavor with resin. The resin used in that case is preferably a rubbery block copolymer having a styrene block and a diene block. Such rubbery block copolymers include styrene-butadiene copolymer, styrene-isoprene copolymer, styrene-butadiene-styrene copolymer, styrene-isoprene-styrene copolymer, styrene-isoprene-butylene- Examples thereof include styrene copolymers, styrene-ethylene-propylene-styrene copolymers, and hydrogenated products thereof. The above resins can be used alone or in combination of two or more.

  Moreover, when using a rubbery block copolymer, it is good also as what mix | blended polyethylene, polypropylene, polyethylene, the maleic anhydride modified material of polypropylene, and the ethylene-vinyl copolymer.

  The blending ratio of the fragrance when the fragrance layer 30 is a film in which the fragrance is mixed with the above resin depends on the type of the fragrance and the strength of the desired fragrance, and the degree to which the resin transmits the fragrance. It can be 1 to 50% by weight in the resin. By setting it as the said range, a fragrance can be maintained over a long period of time, and the raise of the cost by adding more fragrance | flavor more than necessary can also be suppressed.

  In this embodiment, as shown in FIG. 3, a scent sustained release layer 81 can be additionally provided inside the base paper layer 20. As the scent sustained release layer 81 provided on the inside, the same scent sustained release layer 80 provided on the outside of the base paper layer 20 can be used. That is, the scent sustained release layer 81 includes the fragrance layer 31 including, the third coating layer (fragrance fragrance transmission layer or fragrance barrier layer) 41 laminated on one surface of the fragrance layer 31, and the other surface. 4th coating layer (fragrance | flavor weak permeation | transmission layer) 51 made. The scent sustained release layer 81 is also arranged so that the third covering layer 41 faces the base paper layer 20. That is, the two scent sustained release layers 81 are arranged symmetrically inside and outside through the base paper layer 20.

  Since the fragrance sustained release layer 81 is additionally provided, the fragrance layer included in the paper tube 10 becomes two or more, so that it is possible to cope with a case where a stronger fragrance is desired. Moreover, volatilization of the fragrance | flavor component from the inner peripheral surface and outer peripheral surface of the fragrance | flavor layer 31 is adjusted appropriately also on the inner peripheral surface side of the paper tube 10, and the fragrance | flavor component is gradually discharge | released outside (in air | atmosphere). Can do. Therefore, the scent can be gradually released stably over a long period from both the inner peripheral surface side and the outer peripheral surface side of the paper tube 10.

  In addition, the scent sustained release layer 81 additionally provided inside includes the fragrance layer 31, the third coating layer 41 laminated on one surface of the fragrance layer 31, and the fourth coating laminated on the other surface. As long as it has the structure including the layer 51, the material and / or thickness of each layer may be the same as or different from the scent sustained release layer 80 provided on the outside. And the gas permeability of the 3rd coating layer 41 (fragrance | flavor weak permeation | transmission layer or a fragrance | flavor barrier layer) may be the same as the 1st coating layer (fragrance | flavor weak permeation | transmission layer or a fragrance | flavor barrier layer), and is different. May be. Moreover, the gas permeability of the 4th coating layer 51 (fragrance | flavor weak permeable layer) may be the same as that of a 2nd coating layer (fragrance | flavor weak permeable layer), and may differ.

  Further, the scent sustained release layer 81 provided on the inner side may be a single layer or a plurality of layers.

  In this embodiment, as shown in FIG. 4, a very small opening 55 may be provided in the second covering layer (fragrance weakly permeable layer) 50. By providing the opening 55 in this way, the amount of the fragrance component to be released can be increased, so that the strength of the scent can be adjusted when a stronger scent is required.

  The shape and size of the opening 55 provided in the second coating layer 50 are not particularly limited, and can be appropriately selected depending on the use of the paper tube, the type of the fragrance, and the desired scent intensity. The shape of the opening 55 can be a circle, a polygon such as a triangle or a quadrangle, and is preferably a slit. When the slit-shaped opening 55 is provided, the width can be about 0.1 to 100 μm and the length can be about 5 to 1000 μm.

  In the illustrated example, the opening 55 reaches the fragrance layer 30, and the fragrance layer 30 is exposed to the atmosphere at a location where the opening 55 is provided. However, in the location where the opening 55 is provided, the second covering layer (fragrance weakly permeable layer) 50 may be partially left. That is, the opening 55 can also be a location where the thickness of the second coating layer 50 is smaller than the surroundings. The opening 55 can be formed by rubbing the surface of the second coating layer 50 with a file or the like, or can be formed by performing a corona treatment or the like.

  In addition, when the fine opening 55 is provided over the whole surface of the 2nd coating layer 50, when winding the sheet | seat of a roll-shaped sheet, the paper tube 10 surface (surface of the 2nd coating layer 50) and a sheet | seat There is also an advantage that the sheet can be easily wound.

  When the scent sustained release layer 81 is additionally provided on the inner peripheral surface of the base paper layer 20 as described above, the scent sustained release layer 81 additionally provided has an opening similar to the above. Can be provided. That is, an opening may be provided in the fourth covering layer (fragrance perfume weakly permeable layer) 51 included in the other scent sustained release layer 81.

  Next, a method for manufacturing the paper tube 10 will be described. FIG. 6 shows an example of a manufacturing process and a manufacturing apparatus for the paper tube 10 according to this embodiment.

  In the present embodiment, first, a base paper 25 that becomes the base paper layer 20 and a scent sustained release film 85 that forms the scent sustained release layer 80 are respectively prepared.

  Here, the scent sustained release film 85 can be manufactured as follows.

  When the fragrance layer 30 is formed from a composition containing a fragrance and an adhesive base, a film serving as the fragrance weakly permeable layer or the fragrance barrier layer serving as the first coating layer 40, and the second coating layer 50. After forming the film that becomes the perfume weakly permeable layer, the composition containing the perfume and the adhesive base is applied to the film that becomes the first coating layer 40 and / or the film that becomes the second coating layer 50. , Can be laminated and integrated.

  Further, when the fragrance layer 30 is formed from a film in which a fragrance is mixed into a resin, the resin that forms the first coating layer 40, the resin that forms the fragrance layer 30, and the second coating layer 50 The resin to be formed can be laminated and integrated by a co-extrusion method using a T-die method or an extrusion laminating method.

  In addition, as a method of mixing a fragrance | flavor with resin, the method of mixing a fragrance | flavor with resin beforehand and making it into a film and the method of pressing in a fragrance | flavor at the time of extrusion are mentioned.

  After preparing the base paper 25 and the scent sustained release film 85, as shown in FIG. 6, after applying the adhesive 65 to the outer surface of the base paper 25 (the surface located on the outer peripheral surface side of the paper tube 10), the base paper 25 is Wrap around the core shaft 2. Then, the scent sustained release film 85 is wound so that the scent sustained release film 85 is laminated | stacked on the surface to which the adhesive agent 65 of the base paper 25 was apply | coated.

  In the illustrated example, the adhesive 65 is applied to the outer surface of the base paper 25, but may be applied to the inner surface of the scent sustained release film 85 instead of or in addition to the application to the base paper 25. .

  After the wrapping of the base paper 25 and the scent sustained release film 85, the paper tube 10 for the roll-shaped sheet 12 is cut into a predetermined length.

  In addition, as a manufacturing method of a paper tube, one in which two paper tube base papers are spirally wound to form a paper tube is conventionally known. In this embodiment, one of the paper tube base papers is scented. It can manufacture by changing to a sustained release film. Therefore, since an existing manufacturing process and manufacturing apparatus can be used, the cost for equipment change can be suppressed.

  When the base paper 25 and the scent sustained release film 85 are wound, the base paper 25 can be spirally wound around the core shaft 2 without any gap while abutting the edges. Moreover, it can also wind so that an edge part may leave | separate and it can also wind, overlapping edge parts. However, when each of the base paper 25 and the scent sustained release film 85 is wound one by one, it is preferable that the base paper 25 is wound so that there is no gap between the edges because the strength of the paper tube 10 can be secured. . The scent sustained release film 85 can also be wound in the same manner as the base paper 25.

  As shown in FIG. 6, the base paper 25 and the scent sustained release film 85 do not align and wind the edge of the base paper 25 and the edge of the scent sustained release film 85, but the strength of the base paper 25 and the scent sustained release film 85 is increased. Since it can improve, it is preferable.

  In addition, when it is set as the form by which the other scent sustained release layer was provided inside the paper tube 10, the other scent sustained release film used as the other scent sustained release layer 81 is prepared, and this other scent sustained release layer is prepared. A step of winding the release film around the core shaft 2 and then winding the base paper 25 on the outer surface of the other scent sustained release film after applying an adhesive to the other scent sustained release film and / or the base paper 25 may be added. .

  As the adhesive used for adhesion between the base paper 25 and the scent sustained release layer 80, those mentioned as the adhesive base used for the fragrance layer 30 in the scent sustained release layer 80 can be used. That is, polyvinyl alcohol adhesive, natural rubber adhesive, natural rubber latex adhesive, acrylic adhesive, hot melt adhesive, starch adhesive, cellulose adhesive, vinyl acetate adhesive, etc. It is done.

  The paper tube 10 of this embodiment is suitably used as the core of a roll sheet 12 for hygiene such as toilet or makeup.

  In addition, a paper tube refers to the tubular member which has a function which simplifies transport, installation, and use of a sheet-like product by winding a sheet-like product, such as a sanitary thin paper, around it, and making it into a roll shape. The paper tube is generally made of paper, but may contain a material other than paper (resin film or the like) as in the present embodiment. What is substantive is also included in the concept of paper tubes.

  Below, based on an Example and a comparative example, this form is demonstrated still in detail.

<Preparation of roll sheet>
Example 1
Film made of polyethylene (PE) (film to be a perfume weakly permeable layer, oxygen permeability: 5000 cc / m ² · day · atm, carbon dioxide permeability: 20000 cc / m ² · day · atm, thickness: 60 μm) And a film made of polyethylene terephthalate (PET) (film to be a fragrance barrier layer, oxygen permeability: 10 cc / m ² · day · atm, carbon dioxide permeability: 50 cc / m ² · day · atm, thickness: 38 μm), a composition containing a liquid fragrance (DIOR JASMIN TRC 5224, manufactured by Kao Corporation) and an adhesive was laminated and integrated to prepare a fragrance sustained-release film having a thickness of 118 μm. . This thickness was measured with a dial gauge (manufactured by Ozaki Seisakusho, PEACOCK G type) under the conditions of JIS P8111.

  Subsequently, the scent sustained release film is overlapped on the outside of the base paper having a thickness of 200 μm and wound around the core shaft as shown in FIG. 6, and one scent sustained release layer is laminated on the outside of the base paper layer. Got a paper tube. The scent sustained release layer was laminated so that the scent barrier layer was disposed on the base paper layer side. The length of the paper tube was 114 mm and the paper tube diameter was 41 mm.

Furthermore, toilet paper 45 m (double (two sheets), basis weight 16.5 g / m ² , paper thickness (one sheet) 125 μm) was wound by a known method to produce roll-shaped toilet paper.

(Example 2)
A roll-shaped sheet was produced in the same manner as in Example 1 except that one scent sustained release layer was provided on each of the outer and inner sides of the base paper layer. The two scent sustained-release layers provided in Example 2 are the same, and each scent sustained-release layer is laminated so that the fragrance barrier layer is disposed on the base paper layer side.

(Example 3)
A roll-shaped sheet was produced in the same manner as in Example 1 except that two scent sustained release layers were provided outside the base paper layer and one scent sustained release layer was provided inside. The three scent sustained release layers provided in Example 2 are the same, and all of the scent sustained release layers are laminated so that the fragrance barrier layer is disposed on the base paper layer side.

Example 4
A roll-shaped sheet was produced in the same manner as in Example 1 except that a fragrance sustained-release layer in which an opening was formed in the perfume weakly permeable layer by file was used.

(Comparative Example 1)
One scent sustained release layer is laminated on the outer side of the base paper layer, and the scent barrier layer of the scent sustained release layer is disposed on the opposite side of the base paper layer (the scent slow release layer with respect to Example 1). The layers were laminated with the release layer reversed. Otherwise, a roll-like sheet was produced in the same manner as in Example 1.

(Comparative Example 2)
Without using the fragrance sustained-release layer, 60 μL of a liquid fragrance (DIOR JASMIN TRC5224, manufactured by Kao Corporation) was directly applied to the outer peripheral surface of a paper tube made of a 200 μm-thick base paper. And the toilet paper was wound by the well-known method, and the roll-shaped toilet paper was produced. The length of the paper and the size of the paper tube are the same as in the first embodiment.

<Scent evaluation>
The roll sheets of Examples 1 to 4 and Comparative Examples 1 and 2 were sealed in a polyethylene film bag and allowed to stand at room temperature of 50 ° C. and relative humidity of 50%. Each roll-like sheet was subjected to a sensory evaluation of the intensity of the scent after 0 hour (0H), 24 hours (24H), and 48 hours (48H). Note that this condition is a severer condition than the normal use condition assuming deterioration of the product over a long period of time. In this test, 24 hours corresponds to about one and a half months when used under normal conditions, and 48 hours corresponds to about three months when used under normal conditions.

Evaluation was performed by the five testers in the following five stages, and the evaluation values of each tester were averaged to obtain the final evaluation value.
5 points: I felt the scent firmly from the roll 4 points: I felt the scent 3 points: I felt a little scent 2 points: I slightly felt the scent 1 point: I did not feel the scent at all The above is the allowable range. The results are shown in Table 1.

実施例１〜４では、４８時間経過後でも、香りの強さが低下しないか、ほとんど低下していない。よって、本形態の紙管を用いることで、通常の使用条件下で３か月程にわたって香りを持続して放出させることができることが分かった。また、実施例２、３は、実施例１に対して香り徐放層の数が多いため、０時間から４８時間の全体にわたり、実施例１よりも香りの強さは強くなっているが、いずれの場合でも、経時的な香りの強さの低下はごくわずかであった。実施例４は、香料弱透過層に開口が設けられているため、実施例１に比べて早い段階から、より強い香りを放出することができた。

In Examples 1-4, even after 48 hours, the strength of the scent does not decrease or hardly decreases. Therefore, it was found that by using the paper tube of this embodiment, the scent can be released continuously for about 3 months under normal use conditions. Further, in Examples 2 and 3, since the number of scent sustained release layers is larger than that in Example 1, the scent is stronger than Example 1 over the entire period of 0 to 48 hours. In either case, the decrease in scent intensity over time was negligible. In Example 4, since the opening was provided in the perfume weakly permeable layer, a stronger scent could be released from an earlier stage than Example 1.

  On the other hand, the comparative example 1 does not include the fragrance layer in the fragrance sustained release layer, but applies the fragrance directly to the paper tube. Since the amount of the fragrance contained in the fragrance layer is larger than that in Example 1, it can be seen that a strong fragrance is released at the start of the test, but the fragrance is rapidly weakened over time.

  Moreover, in Comparative Example 2, the scent sustained release layer was reversed with respect to the arrangement of Example 1 (the fragrance weakly permeable layer was on the base paper layer side, and the scent barrier layer was on the side opposite to the base paper layer). The perfume barrier layer is arranged on the outer peripheral surface side of the paper tube. In this configuration, although the change in the intensity of the fragrance is small, the intensity of the fragrance is small from the start of use, and the allowable range of the fragrance evaluation has not been reached.

2 Core shaft 10 Paper tube 10a Paper tube (prior art)
11 sheet 12 roll-shaped sheet 20 base paper layer 25 base paper 30 perfume layer 31 perfume layer (perfume layer of other fragrance sustained release layer)
40 1st coating layer (fragrance | flavor weak permeation | transmission layer or fragrance | flavor barrier layer)
41 3rd coating layer (fragrance | flavor weak permeation | transmission layer or fragrance | flavor barrier layer)
50 Second coating layer (fragrance-slightly permeable layer)
51 4th coating layer (fragrance | flavor weak permeation | transmission layer)
55 Opening 80 Scent sustained release layer 81 Other scent sustained release layer 85 Scent sustained release film 65 Adhesive

Claims (5)

A paper tube that becomes the core of a roll sheet,
A cylindrical base paper layer, and a scent sustained release layer laminated on the outside of the base paper layer,
The fragrance sustained release layer is a laminate in which a fragrance layer containing a fragrance, a fragrance barrier layer laminated on one surface of the fragrance layer, and a weak fragrance transmission layer laminated on the other surface are integrated in advance. And
The fragrance sustained-release layer is a paper tube in which the fragrance barrier layer is disposed so as to face the base paper layer. Inside the base paper layer, it has another scent sustained release layer,
The other scent sustained release layer includes a fragrance layer containing a fragrance, a third coating layer laminated on one surface of the fragrance layer, and a fourth coating layer laminated on the other surface,
The third coating layer includes a fragrance weakly permeable layer or a fragrance barrier layer, and the fourth coating layer includes a fragrance weakly permeable layer,
The paper tube according to claim 1, wherein the other scent sustained release layer is disposed such that a third coating layer faces the base paper layer. The paper tube according to claim 1 or 2, wherein an opening is provided in the perfume weakly permeable layer . A roll-shaped sheet comprising the paper tube according to any one of claims 1 to 3 and a sheet wound around the paper tube. A cylindrical base paper layer, and a scent sustained release layer laminated on the outside of the base paper layer,
The fragrance sustained release layer is a laminate in which a fragrance layer containing a fragrance, a fragrance barrier layer laminated on one surface of the fragrance layer, and a weak fragrance transmission layer laminated on the other surface are integrated in advance. And
The fragrance sustained-release layer is a method for producing a paper tube that is a core of a roll-shaped sheet, wherein the fragrance barrier layer is disposed so as to face the base paper layer,
Preparing a base paper to be the base paper layer;
Preparing a scent sustained release film to be the scent sustained release layer;
Winding the base paper around a core shaft to form the base paper layer;
And a step of winding the scent sustained-release film on the base paper layer to form the scent sustained-release layer.

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