JP2019208819A - Tissue paper production method and tissue paper product produced by its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tissue paper manufacturing method capable of sufficiently permeating a tissue paper with a moisturizing agent and reducing the transfer of the odor of a plastic film used for accommodating the moisturizing agent to the tissue paper. provide. SOLUTION: This is a method of manufacturing a tissue paper to which a moisturizing agent is added, which comprises a coating step including a step of applying a moisturizing agent to the tissue paper manufactured in a paper making step, and a tissue paper to which the moisturizing agent is applied. In order to perform a cover step of covering the first roll in the form of a roll with a water-impermeable member and an aging process for accommodating the moisturizing agent to the covered first roll, after the cover step, the covered first roll is covered. An aging step in which the roll is left installed in the installation area for a predetermined time, and the predetermined time is 3 hours or more and 12 hours or less. [Selection diagram] Figure 2

Description

  The present invention relates to a tissue paper to which a humectant is added.

  Conventionally, tissue paper to which a moisturizing agent is added has been widely used to improve the touch.

  The tissue paper is produced by applying a moisturizer to the continuous sheet drawn from the raw roll and winding it, and then setting the roll-shaped continuous sheet after application for a predetermined time so that the moisturizer is adjusted to the continuous sheet. Then, the tissue paper to which the moisturizing agent is added is manufactured by being cut into a product width and folded. This production is described in Patent Document 1, for example.

JP 2011-207580 A

  Here, in the above-mentioned step of adapting the moisturizing agent to the continuous sheet, in order to suppress volatilization of the moisturizing agent, when the rolled continuous sheet after application is wound with a plastic film, the moisturizing agent is adapted to the continuous sheet. When the said time is too long, there exists a possibility that the smell (for example, smell of a plasticizer) of the rolled plastic film may transfer to tissue paper. On the other hand, if the above time is short, the moisturizing agent may not be sufficiently adapted to the tissue paper.

  These points are not taken into consideration in the invention described in Patent Document 1, and there is still room for improvement in an optimal method for incorporating a moisturizing agent into tissue paper.

  An object of the present invention is to provide a tissue paper that can sufficiently penetrate a tissue paper with a moisturizing agent and reduce the transfer of the odor of a plastic film used for the moisturizing agent to the tissue paper. It is to provide a manufacturing method.

  The method for producing tissue paper according to the present invention is a method for producing tissue paper to which a humectant is added, the coating step including a step of applying a humectant to the tissue paper produced in the paper making process, and the humectant. In order to perform the aging process to adjust the moisturizing agent to the first roll covered, the cover step of covering the first roll made of tissue paper coated with a non-permeable member with the non-permeable member, after the cover step, An aging step in which the covered first roll is left installed in an installation area for a predetermined time, and the predetermined time is 3 hours or more and 12 hours or less.

  The tissue paper product according to the present invention is a product in which a tissue paper manufactured by the method for manufacturing tissue paper according to the present invention is filled in a carton.

  According to the present invention, since the water-impermeable member covers the roll-shaped tissue paper after the moisturizing agent is applied for a predetermined time, the moisturizing agent is prevented from volatilizing unnecessarily, and the moisturizing agent is sufficiently permeated into the tissue paper. It becomes possible to make it. Moreover, it becomes possible to suppress that the odor of the said water-impermeable member transfers to tissue paper by restrict | limiting the time to age to a fixed range.

It is a block diagram of the apparatus which performs a coating process among the manufacturing methods of tissue paper based on one Embodiment of this invention. It is a flow of the manufacturing method of the tissue paper based on one Embodiment of this invention.

  An embodiment of the tissue paper manufacturing method according to the present invention will be described in detail with reference to FIGS. 1 and 2. However, the present invention is not limited to the embodiment of the present embodiment.

  The method for producing tissue paper according to the present embodiment includes five processes, ie, a papermaking process, a coating process, a cover process, an aging process, and a carton filling process.

  A papermaking apparatus (papermaking means) that performs a papermaking process produces a plurality of primary rolls from a papermaking raw material.

  In the present invention, examples of the pulp component contained in the pulp slurry as a papermaking raw material include wood pulp, non-wood pulp, and deinked pulp. Examples of wood pulp include hardwood pulp (hardwood kraft pulp (LKP)), softwood pulp (softwood kraft pulp (NKP)), sulfite pulp (SP), dissolved pulp (DP), soda pulp (AP), unbleached Chemical pulps such as kraft pulp (UKP) and oxygen bleached kraft pulp (OKP) can be mentioned. Moreover, as wood pulp, for example, semi-chemical pulp such as semi-chemical pulp (SCP), chemi-ground wood pulp (CGP), mechanical pulp such as ground wood pulp (GP), thermomechanical pulp (TMP, BCTMP) Can be mentioned. Examples of non-wood pulp include cotton pulp such as cotton linter and cotton lint, non-wood pulp such as hemp, straw, and bagasse, cellulose isolated from sea squirts and seaweed, chitin, chitosan, and the like. . Examples of deinking pulp include pulp obtained by deinking waste paper as a raw material. In addition, 1 type of said pulp may be used independently for a pulp component, and 2 or more types may be mixed and used for it. As the pulp component, it is preferable to use at least one selected from softwood pulp and hardwood pulp. Among these, as the pulp component, it is preferable to use coniferous pulp and hardwood pulp together, and it is more preferable to use coniferous kraft pulp (NKP) and hardwood kraft pulp (LKP) in combination.

  In this embodiment, the pulp slurry prepares a mixture of 70% by weight of softwood bleached kraft pulp (NBKP) and 30% by weight of hardwood bleached kraft pulp (LBKP), and 99 parts by weight of water with respect to 0.1 part by weight of the mixture. .9 parts by mass added and prepared.

Moreover, in this embodiment, the continuous sheet (base paper) wound around the primary raw roll is made by dehydrating and drying the pulp slurry after making the pulp slurry using a twin-layer paper former. It is obtained and has a basis weight of 15.1 g / m ² .

  The block diagram of the coating apparatus (coating means) 1 which performs a coating process among the manufacturing methods of the tissue paper based on this embodiment in FIG. 1 is shown. The coating apparatus 1 is plyed with a ply portion (ply means) RP that performs a ply process of stacking continuous sheets (one-ply tissue paper) drawn (or fed) from a plurality of primary raw rolls. And an application unit (application unit) 2 that performs an application process of applying a moisturizing agent to the continuous sheet.

In the present embodiment, in the coating step, the first TsugiHara fabric roll W _R1 of two paper made by the papermaking process is moved to the coating area, as shown in FIG. 1, is set in the coating device 1 . Continuous sheet W ₁ wound in a first TsugiHara fabric roll W _R1 has an inner surface (i.e., adhesive surface) F _B to be inside when ply and an outer surface F _F made on the outside. Then, the coating apparatus 1, as shown in FIG. 1, unwinding reel _{R U1a} by the first TsugiHara fabric roll _{W R1a} inner surface of the continuous sheet _{W 1} of one layer fed out at a machining speed _{V Ua} from _{F B} When the rewind inner surface _{F B} of the continuous sheet _{W 1} of one layer fed out at a machining speed _{V Ub} from the first TsugiHara fabric roll _{W R1b} by the reel _{R U 1 b,} the overlapped in ply unit _{R P,} first A two-layer laminated continuous sheet (two-ply tissue paper) W ₂ having a layer F ₁ and a second layer F ₂ is produced. Next, as shown in FIG. 1, the coating apparatus 1 applies a moisturizer to the plyed laminated continuous sheet W ₂ in the application unit 2. After application of the moisturizer, the coating apparatus 1, the take-up reel R _W, winding the laminated continuous sheet W ₂ moisturizing agent is applied to produce a second TsugiHara roll W _R2. Thereafter, the second raw roll _WR2 is cut to a size that can be covered with an aging cover member described later. This cut roll is hereinafter referred to as “first roll”.

  In the present invention, as the moisturizing agent, for example, aloe extract, longevity grass extract, hypericum extract, barley extract, orange extract, seaweed extract, chamomile extract, cucumber extract, comfrey extract, burdock extract, shiitake extract, sage extract, perilla extract, Sage extract, Duke extract, Cordyceps extract, Dokudami extract, Hatake shimeji extract, Biwa extract, Grape leaf extract, Fuyubodaiju extract, Prunes extract, Loofah extract, Buttonpi extract, Maikai extract, Momonoha extract, Lily extract, Apple extract, Almond oil, Olive oil, Sesame oil , Safflower oil, dimethyl silicone, silicone oil, modified silicone, soybean oil, camellia oil, castor oil, jojoba oil, mink oil, coconut oil, lanolin, arabinose, galactose, xy Glucose, sucrose, sorbitol, fructose, maltose, maltitol, mannose, beeswax, hyaluronic acid, placenta extract, rhamnose, xylobiose, xylo-oligosaccharides, tuberose polysaccharides, trisaccharides, trehalose, soluble collagen, glycyrrhizin, chondroitin sulfate , Diglycerin, squalane, ceramide-like compound, triglycerin, urea, vitamin C phosphate ester calcium salt, vitamin E, sodium pyrrolidonecarboxylate, hinokitiol, liquid paraffin, petrolatum, polyhydric alcohol and the like. Among these moisturizers, aloe extract, longevity herb extract, hypericum extract, comfrey extract, perilla extract, sage extract, ceramide-like compound, dokudami extract, bamboo squirrel extract, loquat extract, scallop extract, button pi extract, castor oil, jojoba oil Lanolin, hyaluronic acid, placenta extract, rhamnose, xylo-oligosaccharide, soluble collagen, glycerin, chondroitin sulfate, squalane, urea and polyhydric alcohol are preferred. Examples of the polyhydric alcohol include ethylene glycol, glycerin, 1,3-butylene glycol, propylene glycol and the like. Among these, the humectant preferably contains glycerin. As the humectant, one of the above compounds may be used alone, or two or more may be used in combination.

  In the present embodiment, a humectant containing 85% by mass of glycerin and 15% by mass of water was used. Then, the humectant having the configuration was applied to a two-ply base paper using an offset gravure method.

  In this embodiment, the coating apparatus 1 includes means for performing the ply process. However, the present invention is not limited to this. In the present invention, the coating apparatus 1 does not include means for performing the ply process, and the application process and the ply process are performed. You may perform a process separately. That is, the laminated continuous sheet previously made into two layers by the ply process may be wound, the rolled roll may be moved to the coating area, and the moisturizing agent may be applied to the laminated continuous sheet drawn from the roll. . At this time, the 1-ply tissue paper (continuous sheet) manufactured in the paper making process is rolled in a state of being overlapped with 2 plies. In the present invention, when the rolled tissue paper is the second roll, the winding diameter of the second roll is preferably 1100 mm or less, and the winding width (roll width) is 200 mm or more and 2500 mm or less. The winding length (roll length) is preferably 1000 m or more and 7000 m or less. In this embodiment, the winding width of the second roll is 1200 mm, and the winding length is 5000 m.

Further, in the present embodiment, the coating unit 2, although single-sided only humectant laminated continuous sheet W ₂ is applied, in the present invention, humectant on both surfaces of the laminated continuous sheet W ₂ may be applied. With this configuration, the speed at which the moisturizing agent is adapted to the entire tissue paper is increased, and the productivity can be improved.

  In the present invention, the coating process includes a winding process in which a continuous sheet coated with a moisturizing agent is wound to form a roll, and the winding process is performed for 5 minutes to 30 minutes between the winding process and the cover process. Leave an interval. In the first roll, the moisturizing agent of the sheet located on the outermost side, that is, the sheet having a high possibility of coming into contact with the non-permeable member for aging described later is appropriately volatilized and easily covered with the non-permeable member. It is to do. In this embodiment, the interval between the winding process and the cover process (that is, the time from the end of coating (after winding) to the start of cover) is 10 minutes.

  The first roll to which the moisturizing agent is applied is moved to an aging area (hereinafter also referred to as “installation area”), installed on the pallet so that its winding axis is vertical, and placed on the pallet, Stored on a shelf.

  In the present invention, the first roll installed on the pallet can be covered with a non-permeable member (for example, a plastic film) wound around the body. However, the present invention is not limited to this, and the first roll installed on the pallet is preferably covered with a bag-like water-impermeable member (plastic film) and the opening of the bag is fixed to the pallet. . With this configuration, the sealing performance with respect to the first roll is improved and volatilization of the moisturizing agent can be suppressed as compared with the case winding. In the present embodiment, the water-impermeable member has a bag shape, and the material of the water-impermeable member is polypropylene as described later. Moreover, in this invention, a 1st roll may be covered with the water-impermeable member not in an aging area but in the said coating area and another area.

  The water-impermeable member covering the first roll according to the present invention is preferably a plastic film. Here, low molecular weight components such as additives added to impart a function to the plastic film may be exposed and bleed on the surface of the plastic film, and the odor of the additive is added to the tissue paper. There is a risk of moving. In the present invention, the odor transfer of the additive is suppressed by setting the aging time to 3 to 12 hours, as will be described later. Examples of the additive include a plasticizer and a stabilizer that are added to soften a plastic film.

  In the present invention, the water-impermeable member is made of, for example, a plastic film, and the plastic film includes, for example, PP (polypropylene), PE (polyethylene), polyvinyl chloride, polyester, and the like. The plastic film preferably contains PP (polypropylene) or PE (polyethylene). In the present embodiment, the material of the water impermeable member is polypropylene. The plastic film can be composed of, for example, a film having a thickness of 0.02 mm. Moreover, although it does not specifically limit as an example of the said plasticizer, For example, PP random copolymer etc. are mentioned.

  In the present invention, the cut first roll starts to be covered with the water-impermeable member in the cover portion within 60 minutes from the start of application of the moisturizing agent by the application unit 2. This is to prevent the moisturizing agent from volatilizing unnecessarily when moving to the aging area. In the present specification and claims, “covering” includes “covering” in the sense of covering other things on or outside the object, as well as “wrapping” or “sealing”. Referenced. In the present embodiment, the cut first roll starts to be covered with the water-impermeable member in the cover part within 50 minutes from the start of application of the moisturizing agent by the application part 2.

  The first roll covered with the water-impermeable member is left installed in the installation area for a predetermined time after the cover process in order to perform aging so that the moisturizing agent is adjusted in the aging area. In the present invention, the predetermined time is preferably 3 hours or longer and 12 hours or shorter, more preferably 3 hours or longer and 6 hours or shorter, in order to effectively exhibit the effects of the present invention. In the present embodiment, the predetermined time is 4 hours.

  The temperature in the installation area where the aging process is performed is lower than the temperature in the coating area where the coating process is performed. Thereby, it is possible to suppress unnecessary moisturization of the moisturizing agent from the tissue paper.

  The carton filling device (carton filling means) that performs the carton filling process cuts (cuts) the tissue paper drawn from the first roll after the aging process into a desired width (for example, product width), and cuts the tissue paper Fold the folded tissue paper into a carton. The folding process is performed in a facility including a rotary or multi-stand type interfolder. By filling the tissue paper manufactured by the above-described tissue paper manufacturing method into a carton, a tissue paper product to which a moisturizing agent is added is completed.

  FIG. 2 is a flow of the tissue paper manufacturing method according to the present embodiment.

  In the papermaking step S1, the papermaking means produces a first raw roll from the papermaking raw material.

  In the coating step S2, the coating means (the coating apparatus 1) superimposes one layer of tissue paper drawn from the two first raw rolls moved to the coating area on two layers. A moisturizing agent is applied to one side (or both sides) of ply tissue paper, and the tissue paper after the moisturizing agent application is wound and cut to produce a first roll.

  In the cover step S3, the first roll after applying the moisturizer is moved to the aging area, and is placed on the pallet in the aging area and covered with a plastic film (or covered with, for example, a bag-shaped plastic film, Fix the opening of the bag to the pallet).

  In the aging step S4, the first roll covered with the plastic film is left on the pallet for a predetermined time (for example, 3 hours to 12 hours), and the tissue paper is made to conform to the moisturizing agent.

  In the carton filling step S5, the carton filling means cuts the tissue paper drawn from the first roll after the moisturizing agent has been blended into the product width, and then fills the folded carton with a rotary or multi-stand type interfolder. To do.

  Conventionally, as a manufacture of moisturizing tissue paper with the addition of a moisturizing agent, the moisturizing agent is applied to the continuous sheet drawn from the raw roll and wound up, and the roll-shaped continuous sheet after application is installed for a predetermined time. Patent Document 1 describes, for example, that tissue paper to which a moisturizing agent is added is manufactured by blending with a continuous sheet, and then cutting and folding to a product width.

  Here, in the above-mentioned step of adapting the moisturizing agent to the continuous sheet, in order to suppress volatilization of the moisturizing agent, when the rolled continuous sheet after application is wound with a plastic film, the moisturizing agent is adapted to the continuous sheet. When the said time is too long, there exists a possibility that the smell (for example, smell of a plasticizer) of the rolled plastic film may transfer to tissue paper. On the other hand, if the above time is short, the moisturizing agent may not be sufficiently adapted to the tissue paper.

  According to this embodiment, since the water-impermeable member covers the roll-shaped tissue paper after applying the moisturizing agent for a predetermined time, the moisturizing agent is prevented from volatilizing unnecessarily, and the moisturizing agent is sufficiently applied to the tissue paper. It can be infiltrated. Moreover, it becomes possible to suppress that the odor of the said water-impermeable member transfers to tissue paper by restrict | limiting the time to age to a fixed range.

  Moreover, since the moisturizing agent penetrates the entire tissue paper sufficiently and spreads evenly, it is possible to improve the touch and moist feeling.

  Furthermore, since the aging time is shorter than in the prior art, the time required for production is shortened, and the productivity can be improved.

<Others>
The present invention is not limited to the above-described embodiments, examples, and modifications described in various places, and appropriate changes and modifications can be made without departing from the technical idea of the present invention.

  For example, the tissue paper according to each of the above embodiments, examples, or modifications thereof is a two-ply one, but the present invention is not limited to this, and one ply or three-ply or more is also applicable.

W _R1a , W _{R1b Primary material} roll W _{R2 Secondary material} roll R _U1a , R _{U1b Rewind} reel R _W Take-up reel R _P ply part V _Ua , V _Ub Processing speed W ₁ Continuous sheet W ₂ Lamination Continuous sheet F _F Outer side surface F of laminated continuous sheet _{B B} Inner side surface of laminated continuous sheet ₁ First layer sheet F ₂ Second layer sheet 1 Coating device 2 Application section

Claims (13)

A method for producing tissue paper to which a humectant is added,
A coating process including a process of applying a moisturizing agent to tissue paper produced in the papermaking process;
A cover step of covering the first roll made of tissue paper coated with the moisturizing agent with a water-impermeable member;
An aging step in which the covered first roll is left installed in an installation area for a predetermined time after the covering step in order to perform aging so that the moisturizing agent is adapted to the covered first roll. ,
The said predetermined time is 3 hours or more and 12 hours or less, The manufacturing method of the tissue paper characterized by the above-mentioned.   The tissue paper manufacturing method according to claim 1, wherein the predetermined time is 3 hours or more and 6 hours or less.   3. The tissue paper manufacturing method according to claim 1, wherein the first roll is covered with the water-impermeable member within 60 minutes from the start of application of the moisturizing agent. The coating step includes a winding step of winding the tissue paper coated with the moisturizing agent into a roll shape,
The method for producing tissue paper according to any one of claims 1 to 3, wherein an interval of 5 minutes or more is provided between the winding step and the cover step.   5. The aging process, wherein the covered first roll is installed in the installation area so that a winding axis of the first roll is vertical. 6. The manufacturing method of the tissue paper of description. The water-impermeable member has a bag shape,
In the covering step, the first roll is installed on the plate-like member in the installation area so that the winding axis thereof is vertical, and is covered by the bag-like water-impermeable member,
The tissue paper manufacturing method according to any one of claims 1 to 5, wherein an opening of the bag-like water-impermeable member is fixed to the plate-like member.   The 1-ply tissue paper produced in the paper making process is rolled up in a state of being stacked in 2 plies, and when the rolled tissue paper is used as a second roll, the second roll The winding diameter of the second roll is 1100 mm or less, the winding width of the second roll is 200 mm or more and 2500 mm or less, and the winding length of the second roll is 1000 m or more and 7000 m or less. The manufacturing method of the tissue paper as described in any one of Claim 6.   The tissue paper according to any one of claims 1 to 7, wherein the coating step includes a step of applying the moisturizing agent to both surfaces of the tissue paper manufactured in the paper making step. Production method. Cutting the tissue paper drawn from the tissue paper roll after the aging step into a desired width, folding the cut tissue paper, and filling the folded bundle of tissue paper into a carton; Further including
The tissue paper manufacturing method according to any one of claims 1 to 8, wherein the folding step is performed in a facility including a rotary or multi-stand type interfolder.   10. The temperature in the installation area where the aging process is performed is lower than the temperature in the coating area where the coating process is performed. 10. Tissue paper manufacturing method.   The tissue paper manufacturing method according to any one of claims 1 to 10, wherein the water-impermeable member is made of a plastic film.   The method for producing tissue paper according to claim 11, wherein the plastic film includes polypropylene or polyethylene.   A tissue paper product in which a tissue paper manufactured by the method for manufacturing tissue paper according to any one of claims 1 to 12 is filled in a carton.

Images