JP2021191532A - Method for manufacturing tissue paper and tissue paper product manufactured by the method - Google Patents

Abstract

To provide a method for manufacturing tissue paper that can suppress unnecessary volatilization of humectant from tissue paper.SOLUTION: A method for manufacturing tissue paper added with humectant includes: a coating step including a step of applying humectant to tissue paper manufactured in a papermaking step; a cover step of covering a first roll, in which the tissue paper applied with the humectant is formed into a roll shape, with an impermeable member; and an aging step of leaving the covered first roll installed in an installation area for prescribed time after the cover step in order to perform aging of penetrating the humectant into the covered first roll, where the installation area to perform the aging step has an internal temperature that is lower than an internal temperature of a coating area to perform the coating step.SELECTED DRAWING: Figure 2

Description

The present invention relates to tissue paper to which a moisturizer has been added.

Conventionally, tissue paper to which a moisturizer has been added has been widely used in order to improve the feel on the skin.

In the production of the tissue paper, a moisturizer is applied to the continuous sheet drawn from the raw fabric roll and wound up, and the roll-shaped continuous sheet after application is installed for a predetermined time to allow the moisturizer to blend into the continuous sheet. After that, it is cut to the width of the product and folded to produce tissue paper to which a moisturizer is added. This production is described in, for example, Patent Document 1.

Japanese Unexamined Patent Publication No. 2011-207580

Here, the temperature in the area where the continuous sheet is installed and the temperature in the area where the step of applying the moisturizer is performed are optimized. Otherwise, the moisturizer may volatilize unnecessarily.

These points are not taken into consideration in the invention described in Patent Document 1, and there is still room for improvement in the optimum method for acclimatizing the moisturizer to the tissue paper.

An object of the present invention is to provide a method for producing tissue paper capable of suppressing unnecessary volatilization of a moisturizer from tissue paper.

The method for producing tissue paper according to the present invention is a method for producing tissue paper to which a moisturizing agent is added, and includes a coating step including a step of applying a moisturizing agent to the tissue paper produced in the paper making step, and the moisturizing agent. After the covering step, in order to perform a covering step of covering the first roll, which is a roll of the tissue paper coated with the above, with a non-permeable member, and an aging of blending the moisturizing agent into the covered first roll. The temperature in the installation area where the aging process is performed includes the aging step of leaving the covered first roll in the installation area for a predetermined time, and the temperature in the installation area is the coating area where the coating process is performed. It is characterized by being lower than the temperature inside.

Further, the tissue paper product according to the present invention is a carton filled with tissue paper produced by the method for producing tissue paper according to the present invention.

According to the present invention, it is possible to prevent the moisturizer from unnecessarily volatilizing from the tissue paper.

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

An embodiment of the method for producing tissue paper 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 aspect of the present embodiment.

The method for producing tissue paper according to the present embodiment includes five steps of a papermaking step, a coating step, a covering step, an aging step, and a carton filling step.

The papermaking apparatus (papermaking means) that performs the papermaking process manufactures a plurality of primary raw rolls from the 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 broadleaf pulp (blightwood kraft pulp (LKP)), coniferous tree pulp (coniferous kraft pulp (NKP)), sulfate pulp (SP), dissolved pulp (DP), soda pulp (AP), and unbleached pulp. Examples thereof include chemical pulps such as kraft pulp (UKP) and oxygen bleached kraft pulp (OKP). Examples of wood pulp include semi-chemical pulp such as semi-chemical pulp (SCP) and chemiground wood pulp (CGP), and mechanical pulp such as crushed wood pulp (GP) and thermomechanical pulp (TMP, BCTMP). Can be mentioned. Examples of the non-wood pulp include cotton pulp such as cotton linter and cotton lint, non-wood pulp such as hemp, straw and bagasse, and cellulose, chitin and chitosan isolated from sea squirts and seaweed. .. Examples of the deinked pulp include pulp obtained by deinking from used paper as a raw material. As the pulp component, one of the above pulps may be used alone, or two or more of them may be mixed and used. As the pulp component, it is preferable to use at least one selected from softwood pulp and hardwood pulp. Among them, as the pulp component, it is preferable to use softwood pulp and hardwood pulp in combination, and it is more preferable to use softwood kraft pulp (NKP) and hardwood kraft pulp (LKP) in combination.

In the present embodiment, as the pulp slurry, a mixture of 70% by mass of softwood bleached kraft pulp (NBKP) and 30% by mass of broadleaf tree bleached kraft pulp (LBKP) is prepared, and 99 parts by mass of water is used for 0.1 part by mass of the mixture. It was prepared by adding 9.9 parts by mass.

Further, in the present embodiment, the continuous sheet (base paper) wound on the primary roll is made by papermaking the pulp slurry using a two-layer papermaking twin wire former, and then dehydrating and drying. It is obtained and has a basis weight of 15.1 g / m ² .

FIG. 1 shows a block diagram of a coating device (coating means) 1 that performs a coating process among the methods for producing tissue paper according to the present embodiment. The coating device 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 unwound) from a plurality of primary raw fabric rolls. It is configured to include a coating unit (coating means) 2 for performing a coating step of applying a moisturizer to the continuous sheet.

In the present embodiment, in the coating process, the two primary rolls W _R1 made in the papermaking process are moved to the coating area and set in the coating apparatus 1 as shown in FIG. .. 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 (2-ply tissue paper) W ₂ having a layer F ₁ and a second layer F ₂ is manufactured. Next, as shown in FIG. 1, the coating device 1 applies a moisturizer to the plyed _{laminated continuous sheet W 2 at the coating 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. After that, the secondary roll _WR2 is cut to a size that can be covered with the 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, prolonging herb extract, otogirisou extract, corn extract, orange extract, seaweed extract, chamomile extract, cucumber extract, confree extract, gobo extract, shiitake extract, dioe extract, perilla extract, etc. Sage extract, Duke extract, Winter worm summer grass extract, Dokudami extract, Hatakeshimeji extract, Biwa extract, Grape leaf extract, Fuyubodaiju extract, Prune extract, Hechima extract, Buttonpi extract, Maikai extract, Momonoha extract, Yuri extract, Apple extract, Almond oil, Olive oil, Sesame oil , Saflower oil, dimethyl silicone, silicone oil, modified silicone, soybean oil, camellia oil, castor oil, jojoba oil, mink oil, palm oil, lanolin, arabinose, galactose, xylose, glucose, sucrose, sorbitol, fructose, maltose, Martitol, Mannose, Mitsurou, Hyaluronic Acid, Placenta Extract, Lambnorth, Xylobiose, Xylooligosaccharide, Tuberose Polysaccharide, Trisaccharide, Trehalose, Soluble Collagen, Glycyrrhizin, Chondroitin Sulfate, Diglycerin, Squalane, Ceramide Similar Compounds, Triglycerin, Urea , Vitamin C phosphate ester calcium salt, vitamin E, sodium pyrrolidone carboxylate, hinokithiol, liquid paraffin, vaseline, polyhydric alcohol and the like. Among these moisturizers, aloe extract, prolonging herb extract, otogirisou extract, confree extract, perilla extract, sage extract, ceramide-like compound, dokudami extract, hatakeshimeji extract, biwa extract, fuyubodaiju extract, buttonpi extract, sunflower oil, jojoba oil , Lanorin, hyaluronic acid, placenta extract, ramnorth, xylooligosaccharide, soluble collagen, glycerin, chondroitin sulfate, squalane, urea and polyhydric alcohols are preferred. Examples of the polyhydric alcohol include ethylene glycol, glycerin, 1,3-butylene glycol, propylene glycol and the like. Above all, the moisturizer preferably contains glycerin. As the moisturizer, one of the above compounds may be used alone, or two or more of them may be used in combination.

In this embodiment, a moisturizer containing 85% by mass of glycerin and 15% by mass of water was used. Then, the moisturizer having the same composition was applied to a 2-ply base paper using an offset gravure method.

In the present embodiment, the coating device 1 includes a means for performing the ply step, but the present invention does not include a means for the coating device 1 to perform the ply step, and the coating step and the ply are not included. The process may be performed separately. That is, the laminated continuous sheet previously made into two layers by the ply step may be wound up, the wound roll may be moved to the coating area, and the moisturizer may be applied to the laminated continuous sheet drawn from the roll. .. At this time, the 1-ply tissue paper (continuous sheet) produced in the papermaking process is rolled in a state of being stacked with 2 plies to form a roll. In the present invention, when the roll-shaped tissue paper is used as a 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 the present 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 moisturizer is applied to the entire tissue paper is increased, and productivity can be improved.

In the present invention, the coating step includes a winding step of winding a continuous sheet coated with a moisturizer into a roll shape, and the interval between the winding step and the covering step is 5 minutes or more and 30 minutes or less. Leave a space. This moderately volatilizes the moisturizer of the sheet located on the outermost side of the first roll, that is, the sheet having a high possibility of coming into contact with the impermeable member for aging described later, and is easy to cover with the impermeable member. To do. In the present embodiment, the interval between the winding step and the covering step (that is, the time from the end of coating (after winding) to the start of covering) is 10 minutes.

The first roll coated with the moisturizer is moved to an aging area (hereinafter, also referred to as "installation area"), installed on a pallet so that its winding axis is vertical, and is placed on the floor or on the pallet. Stored on shelves.

In the present invention, the first roll installed on the pallet can be wrapped and covered with a non-permeable member (for example, a plastic film). However, in the present invention, the first roll installed on the pallet is not limited to this, and it is preferable that the first roll installed on the pallet is covered with a bag-shaped impermeable member (plastic film) and the opening of the bag is fixed to the pallet. .. With this configuration, the sealing property to the first roll is improved as compared with the body wrapping, and the volatilization of the moisturizer can be suppressed. In the present embodiment, the impermeable member has a bag shape, and as described later, the material of the impermeable member is polypropylene. Further, in the present invention, the first roll may be covered with the impermeable member in the coating area and other areas instead of the aging area.

As the impermeable member covering the first roll according to the present invention, a plastic film is preferable. 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 transmitted to the tissue paper. There is a risk of moving. In the present embodiment, as will be described later, the odor transfer of the additive is suppressed by setting the aging time to 3 to 12 hours. Examples of the additive include a plasticizer and a stabilizer added to soften a plastic film.

In the present invention, the 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 impermeable member is polypropylene. The plastic film may be composed of, for example, a film having a thickness of 0.02 mm. Further, examples of the above-mentioned plasticizer are not particularly limited, and examples thereof include PP random copolymers and the like.

Further, in the present invention, the cut first roll starts to be covered with the impermeable member in the cover portion within 60 minutes from the start of application of the moisturizer by the coating portion 2. This is to prevent the moisturizer from unnecessarily volatilizing when moving to the aging area. As used herein and in the claims, "covering" includes so-called "covering", which means covering the top or outside of an object with another object, as well as "wrapping" and "sealing". Referenced. In the present embodiment, the cut first roll begins to be covered with the impermeable member in the cover portion within 50 minutes from the start of application of the moisturizer by the coating portion 2.

The first roll covered with the impermeable member is left in the installation area for a predetermined time after the covering step in order to perform aging to acclimate the moisturizer in the aging area. In the present invention, the predetermined time is preferably 3 hours or more and 12 hours or less, and more preferably 3 hours or more and 6 hours or less in order to effectively exert the effect 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. This makes it possible to prevent the moisturizer from unnecessarily volatilizing from the tissue paper.

The carton filling device (carton filling means) that performs the carton filling step cuts (cuts) the tissue paper drawn from the first roll after the aging step into a desired width (for example, the product width), and the cut tissue paper is cut. Fold and fill the carton with a bundle of folded tissue paper. The folding process is performed in equipment including rotary or multi-stand interfolders. By filling the carton with the tissue paper produced by the above-mentioned method for producing tissue paper, a tissue paper product to which a moisturizer is added is completed.

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

In the papermaking step S1, the papermaking means manufactures the first raw fabric roll from the papermaking raw material.

In the coating step S2, the coating means (coating apparatus 1) superimposes one layer of tissue paper drawn from the two first raw fabric rolls moved to the coating area into two layers, and 2 A moisturizer is applied to one side (or both sides) of the ply tissue paper, and the tissue paper after the moisturizer is applied is wound and cut to produce a first roll.

In the covering step S3, the first roll after applying the moisturizer is moved to the aging area, placed on a pallet in the aging area, wrapped with a plastic film and covered (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 (eg, 3 to 12 hours) to allow the tissue paper to blend the moisturizer.

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

Conventionally, in the production of moisturizing tissue paper to which a moisturizer has been added, a moisturizer is applied to a continuous sheet drawn from a raw fabric roll and wound up, and a roll-shaped continuous sheet after application is installed for a predetermined time to provide a moisturizer. It is described in, for example, Patent Document 1 that a moisturizer-added tissue paper is produced by blending a continuous sheet into a continuous sheet and then cutting and folding it to the product width.

Here, the temperature in the area where the continuous sheet is installed and the temperature in the area where the step of applying the moisturizer is performed are optimized. Otherwise, the moisturizer may volatilize unnecessarily.
Further, in the above step of blending the moisturizer into the continuous sheet, in order to suppress the volatilization of the moisturizer, when the roll-shaped continuous sheet after application is wrapped with a plastic film, the moisturizer is blended into the continuous sheet. If the time is too long, the odor of the rolled plastic film (eg, the odor of the plasticizer) may be transferred to the tissue paper. On the other hand, if the above time is short, the moisturizer may not be sufficiently compatible with the tissue paper.

According to this embodiment, it is possible to prevent the moisturizer from unnecessarily volatilizing from the tissue paper.
In addition, according to the present embodiment, since the impermeable member covers the roll-shaped tissue paper after the moisturizer is applied for a predetermined time, the moisturizer is suppressed from being unnecessarily volatilized, and the moisturizer is used as the tissue paper. It is possible to fully infiltrate into. Further, by limiting the aging time to a certain range, it is possible to suppress the transfer of the odor of the impermeable member to the tissue paper.

In addition, the moisturizer sufficiently permeates the entire tissue paper and spreads evenly, so that the feeling of touch and moistness can be improved.

Further, since the aging time is shorter than that in the conventional case, the time required for manufacturing is shortened, and the productivity can be improved.

<Others>
The present invention is not limited to the above-described embodiments, examples, and modifications described therein, and can be appropriately modified or modified without departing from the technical idea of the present invention.

For example, the tissue paper according to each of the above-mentioned embodiments, examples, or modifications thereof is of 2-ply, but the present invention is not limited to this, and 1-ply or 3-ply or more can be applied.

W _R1a , W _R1b 1st original roll W _R2 2nd original 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 Laminated Continuous sheet F _F Outer surface of _{laminated continuous sheet F B} Inner surface of laminated continuous sheet F ₁ First layer sheet F ₂ Second layer sheet 1 Coating device 2 Coating unit

Claims (13)

It is a method of manufacturing tissue paper to which a moisturizer is added.
A coating process that includes the process of applying a moisturizer to the tissue paper produced in the papermaking process, and
A cover step of covering the first roll, which is a roll of tissue paper coated with the moisturizer, with a non-permeable member, and
In order to perform aging to make the moisturizer acclimatize to the covered first roll, the aging step of leaving the covered first roll in the installation area for a predetermined time after the covering step is included. ,
A method for producing tissue paper, wherein the temperature in the installation area where the aging step is performed is lower than the temperature in the coating area where the coating process is performed. The method for producing tissue paper according to claim 1, wherein the predetermined time is 3 hours or more and 12 hours or less. The method for producing tissue paper according to claim 2, wherein the predetermined time is 3 hours or more and 6 hours or less. The production of tissue paper according to any one of claims 1 to 3, wherein the first roll is covered with the impermeable member within 60 minutes from the start of application of the moisturizer. Method. The coating step includes a winding step of winding the tissue paper coated with the moisturizer into a roll shape.
The method for producing tissue paper according to any one of claims 1 to 4, wherein a gap of 5 minutes or more is provided between the winding step and the covering step. One of claims 1 to 5, wherein in the aging step, the covered first roll is installed in the installation area so that the winding axis of the first roll is vertical. The method for manufacturing tissue paper described in the section. The impermeable member has a bag shape and is in the shape of a bag.
In the covering step, the first roll is installed on a plate-shaped member in the installation area so that its winding axis is vertical, and is covered with the bag-shaped impermeable member.
The method for producing tissue paper according to any one of claims 1 to 6, wherein the opening of the bag-shaped impermeable member is fixed to the plate-shaped member. The 1-ply tissue paper produced in the papermaking process is rolled in a state of being stacked with 2 plies to form a roll, and when the roll-shaped tissue paper is used as a second roll, the second roll is used. 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 method for producing tissue paper according to any one of claims 7. The tissue paper according to any one of claims 1 to 8, wherein the coating step includes a step of applying the moisturizer to both surfaces of the tissue paper produced in the papermaking step. Production method. After the aging step, a step of cutting the tissue paper drawn from the tissue paper roll to a desired width, a step of folding the cut tissue paper, and a step of filling the carton with a bundle of the folded tissue paper. , Including
The method for producing tissue paper according to any one of claims 1 to 9, wherein the folding step is performed in a facility including a rotary type or multi-stand type interfolder. The method for producing tissue paper according to any one of claims 1 to 10, wherein the impermeable member is made of a plastic film. The method for producing tissue paper according to claim 11, wherein the plastic film contains polypropylene or polyethylene. A tissue paper product in which a carton is filled with tissue paper produced by the method for producing tissue paper according to any one of claims 1 to 12.

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