JP2021087618A - Method for manufacturing moisturized paper, and moisturized paper product manufactured by the same - Google Patents

Abstract

To provide a method for manufacturing moisturized paper in which sufficient moisturizing agent is impregnated into tissue paper and an aging time is suppressed to more appropriately perform an aging in order to adjust the moisturizing agent, such that the effect by the moisturizing agent can be sufficiently obtained.SOLUTION: A method for manufacturing the moisturized paper into which moisturizing agent is added, includes: an applying step S2 including a step for applying the moisturizing agent into the paper manufactured in a papermaking step; and an aging step S4 for storing the paper roll in which the moisturized paper into which the moisturizing agent is applied is rolled in an aging area for a predefined period of time. A storage environment of the aging area has the temperature of 25°C or less and humidity of 45%RH or less.SELECTED DRAWING: Figure 2

Description

This case relates to a moisturizing 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 such tissue paper, a moisturizer is applied to a continuous sheet drawn from a raw fabric roll and wound up, and the rolled continuous sheet (hereinafter, simply referred to as a sheet) after application is used for a predetermined time. The moisturizer-added tissue paper is produced by aging and blending the moisturizer into the sheet, then cutting and folding to the width of the product. This production is described in, for example, Patent Document 1.

Japanese Unexamined Patent Publication No. 2011-207580

By the way, it has been found that when the moisturizer is blended into the sheet by aging as described above, the storage environment such as the temperature and humidity of the space to be aged affects the product.
For example, when aging is performed in a low temperature environment, the moisturizer is slowly adapted to the sheet and it takes a long time to age.
In the aging process of blending the moisturizer with the sheet, in order to suppress the volatilization of the moisturizer, the rolled continuous sheet after application may be wrapped with a plastic film, but this also affects the aging environment. It is thought that it will be done.

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.
At present, products with a moisturizer applied to paper are mainly tissue paper, so-called moisturizing tissue, but for example, other sanitary papers such as toilet paper can also be applied with a moisturizer to improve the paper quality. Can be planned. In general, papers coated with these moisturizers (referred to as "moisturizer papers"), there is room for improvement in the optimum method for blending the moisturizer into the papers by the above-mentioned aging.

The purpose of this case is to allow the moisturizer to fully penetrate into the tissue paper and to allow the moisturizer to blend in, so that the aging time can be suppressed by performing aging more appropriately, and the effect of the moisturizer can be sufficiently obtained. The purpose is to provide a method for producing a moisturizing paper.

The method for producing a moisturizing paper according to the present case is a method for producing a moisturizing paper to which a moisturizer is added, and includes a coating process including a step of applying a moisturizer to the paper produced in the paper making process, and the moisturizing material. The storage environment of the aging area includes an aging step of storing the applied moisturizing paper in the aging area for a predetermined time, and the storage environment of the aging area is characterized in that the temperature is 25 ° C. or lower and the humidity is 45% RH or less.

The storage environment of the aging area is preferably a temperature of 12 to 23 ° C. and a humidity of 40% RH or less.
The temperature of the moisturizer in the coating step is preferably 34 to 48 ° C.
It is preferable that a covering step of covering the paper roll with a non-permeable member is provided between the coating step and the aging step.
The predetermined time is preferably 3 hours or more and 12 hours or less.
The paper roll is preferably covered with the non-permeable member within 60 minutes from the start of application of the moisturizer.
The coating step includes a winding step of winding the moisturizing paper coated with the moisturizer into a roll shape, and a gap of 5 minutes or more may be provided between the winding step and the covering step. preferable.
In the aging step, it is preferable that the paper roll covered with the non-permeable member is stored in the aging area in a posture in which the winding axis of the paper roll is vertical.
The non-permeable member has a bag shape, and in the covering step, the paper roll is installed on the plate-shaped member in the aging area so that its winding axis is vertical, and the bag-shaped member is formed. It is preferable to cover the non-permeable member and fix the opening of the bag-shaped non-permeable member to the plate-shaped member.
The coating step preferably includes a step of applying the moisturizer to both surfaces of the paper produced in the papermaking step.
After the aging step, a step of cutting the moisturizing paper drawn from the paper roll to a desired width, a step of folding the cut moisturizing paper, and a step of filling a carton with a bundle of the folded moisturizing paper. , And the folding step is preferably performed in equipment including a rotary or multi-stand interfolder.
The non-permeable member is preferably made of a plastic film.
The plastic film preferably contains polypropylene or polyethylene.

In addition, the moisturizing paper product according to the present case is a carton filled with moisturizing paper manufactured by the above-mentioned manufacturing method of moisturizing paper.

According to this method, since the temperature of the storage environment in the aging area of the moisturizing paper is 25 ° C. or lower and the room temperature range (25 to 15 ° C.) or lower, the moisturizer is difficult to adapt to the paper due to the temperature conditions, and the aging time is long. However, since the humidity of the storage environment is 45% RH or less, which is relatively low compared to the standard humidity (65% RH) of normal humidity, the moisturizer becomes more familiar to the paper under humidity conditions. From this point, the aging time can be shortened. Therefore, it is possible to suppress an increase in the aging time while aging at a relatively low temperature, and the moisturizer can be blended into the paper to ensure the desired effect of the moisturizer.

It is a block diagram of the apparatus which performs the coating process in the manufacturing method of the moisturizing paper which concerns on one Embodiment. It is a flow of the manufacturing method of the moisturizing paper which concerns on one Embodiment. It is a schematic diagram [FIG. 3 (a)] explaining the temperature in the coating process of the method of manufacturing a moisturizing paper which concerns on one Embodiment, and the schematic diagram [FIG. 3 (b)] explaining the temperature and humidity in an aging process.

An embodiment of the method for producing a moisturizing paper according to the present invention will be described in detail with reference to FIGS. 1 and 2. In the present embodiment, as the moisturizing paper, a tissue paper to which a moisturizer is added (moisturizing tissue paper) is exemplified. Therefore, the "method for producing moisturizing paper" will be referred to as "method for producing tissue paper". However, the present invention is not limited to 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.

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

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)), sulfite pulp (SP), dissolved pulp (DP), soda pulp (AP), and unbleached. Examples include chemical pulp 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 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 squirrels and seaweeds. .. 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 hardwood bleached kraft pulp (LBKP) is prepared, and 99 parts by mass of water is prepared with respect to 0.1 part by mass of the mixture. It was prepared by adding 9 parts by mass. However, the mixing ratio (ratio of mass%) of the softwood bleached kraft pulp (NBKP) and the hardwood bleached kraft pulp (LBKP) can be adjusted in the range of 20:80 to 80:20.

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

FIG. 1 shows a block diagram of a coating apparatus (coating means) 1 that performs a coating process among the methods for producing tissue paper according to the present embodiment. The coating apparatus 1 uses a continuous sheet (one-ply tissue paper) drawn out (or drawn out) from a plurality of primary rolls WR1a and WR1b (indicated by reference numeral WR1 when the two are not distinguished). It is composed of a ply portion (ply means) RP for performing a ply step of stacking, and a coating portion (coating means) 2 for performing a coating step of applying a moisturizer to a ply continuous sheet.

In the present embodiment, in the coating process, the two primary rolls WR1 made in the papermaking process are moved to the coating area and set in the coating apparatus 1 as shown in FIG. The continuous sheet W1 wound around the primary roll WR1 has an inner side surface (that is, an adhesive surface) FB that becomes inner when plying, and an outer surface FF that becomes outer. Then, as shown in FIG. 1, the coating device 1 includes an inner side surface FB of a one-layer continuous sheet W1 unwound from the primary roll WR1a by the rewinding reel RU1a at a processing speed VUa, and a rewinding reel. The inner side surface FB of the one-layer continuous sheet W1 unwound from the first raw fabric roll WR1b by the RU1b at a processing speed VUb is superposed on the ply portion RP, and has the first layer F1 and the second layer F2. A continuous layered sheet (2-ply tissue paper) W2 is manufactured. Next, as shown in FIG. 1, the coating device 1 applies a moisturizer to the plyed laminated continuous sheet W2 at the coating portion 2. After applying the moisturizer, the coating device 1 winds the laminated continuous sheet W2 coated with the moisturizer by the take-up reel RW to manufacture the second raw fabric roll WR2. After that, the secondary roll WR2 is cut into a size that can be covered with the aging cover member described later. This cut roll is hereinafter referred to as a "first roll (paper roll)".

Moisturizing agents include, for example, aloe extract, prolongation grass extract, otogirisou extract, corn extract, orange extract, seaweed extract, chamomile extract, cucumber extract, confree extract, gobo extract, shiitake extract, dioe extract, perilla extract, sage extract, and 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, lily 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, maltol, 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 Lin Acid ester calcium salt, vitamin E, sodium pyrrolidone carboxylate, hinokithiol, liquid paraffin, vaseline, polyhydric alcohol and the like can be mentioned. 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 above composition was applied to a 2-ply base paper using an offset gravure method. However, the ratio of glycerin to water (ratio of mass%) in the moisturizer containing glycerin and water can be adjusted in the range of 70:30 to 85:15.

In the coating step, the temperature of the moisturizer to be applied to the laminated continuous sheet W2 is controlled in a coating temperature range of about 34 to 48 ° C., more preferably in a coating temperature range of about 38 to 42 ° C. For example, when the outside air temperature is relatively high as in summer, the temperature is controlled to about 34 to 38 ° C., which is relatively low even in the coating temperature range. Further, when the outside air temperature is relatively low as in winter, the temperature is controlled to about 42 to 48 ° C., which is relatively high even in the coating temperature range. Normally, the moisturizer is heated and the degree of heating is adjusted to control the coating temperature range. In the present embodiment, as shown in FIG. 3A, the coating temperature is controlled in the coating temperature range of about 38 to 42 ° C.

In this way, the reason why the coating temperature range of the moisturizer is controlled to a relatively high temperature is to reduce the viscosity of the moisturizer and ensure the permeability of the moisturizer to the sheet W2. That is, the lower the temperature of the moisturizer, the higher the viscosity and the more difficult it is to penetrate the coated paper sheet. Therefore, the moisturizer is controlled to a relatively high temperature to reduce its viscosity to promote its penetration into the paper sheet after application. However, if the temperature of the moisturizer is too high, it tends to volatilize. The temperature at which the viscosity is lowered and volatilization is not promoted is controlled in a coating temperature range of about 34 to 48 ° C., more preferably in a coating temperature range of about 38 to 42 ° C.
Further, when the air temperature is relatively low, the temperature of the moisturizer decreases after application, and the temperature of the moisturizer is controlled to a relatively high temperature of about 42 ° C. in anticipation of this decrease.

In this embodiment, the coating device 1 includes a means for performing the ply process, but the present invention is not limited to this, and the coating device 1 does not include a means for performing the ply process, and the coating process and the ply process are separated. You may go to. That is, the laminated continuous sheet previously made into two layers by the ply process may be wound, 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. When this roll-shaped tissue paper is used as a second roll (paper 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 moisturizer is applied only to one side of the laminated continuous sheet W2 by the coating portion 2, but the moisturizer may be applied to both sides of the laminated continuous sheet W2.
With this configuration, the speed at which the moisturizer is applied to the entire tissue paper is increased, and the productivity can be improved.

In the present embodiment, 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 between. This moderately volatilizes the moisturizer of the sheet located on the outermost side of the first roll, that is, the sheet that is likely to come into contact with the non-permeable member for aging described later, and is easily covered with the non-permeable 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.

As shown in FIG. 3B, the first roll 3 coated with the moisturizer is moved to the aging area 4 and installed on the pallet (plate-shaped member) 5 in a posture in which the winding axis is vertical, and the pallet is placed. Stored on the floor or shelf as it is placed on 5.

In the present embodiment, the storage environment of the aging area 4 is set so that the temperature (storage temperature) is 15 to 18 ° C. and the humidity (storage humidity) is 40% RH or less. Such management of the storage environment can be performed by using an air conditioner having a humidity control function.

The storage temperature in the aging area 4 is set to be considerably lower than the coating temperature range (about 38 to 42 ° C.) of the moisturizer to be coated on the laminated continuous sheet W2 in the coating step. When the storage temperature is low, the temperature of the moisturizer also decreases and the viscosity of the moisturizer increases, so that the permeation of the moisturizer into the sheet W2 becomes slow and aging takes time.
On the other hand, the storage humidity is set lower than the standard humidity (65% RH) of normal humidity. The lower the humidity, the easier it is for the moisturizer to volatilize, the more the moisturizer permeates into the sheet W2, and the more the moisturizer becomes familiar with the sheet W2.

Therefore, in response to controlling the storage temperature to a relatively low temperature of 15 to 18 ° C., by controlling the storage humidity to a relatively low humidity of 40% RH or less, while suppressing an increase in aging time. , It is designed to promote the familiarization of the moisturizer into the sheet W2.
If there is a change in the storage temperature during aging, the compatibility of the moisturizer with the sheet W2 tends to vary. Therefore, it is preferable that the storage temperature does not change much, and in the present embodiment, the storage temperature is in the range of 15 to 18 ° C.

However, although the degree of suppression of the increase in aging time and the degree of promotion of the moisturizer's familiarity with the sheet may be weakened, the temperature (storage temperature) is 12 to 23 ° C and the humidity (storage humidity) is 40% RH. Even if it is set as follows, it is possible to balance the suppression of the increase in the aging time and the promotion of the moisturizer's familiarization with the sheet. Furthermore, even if the upper limit of the storage temperature is set to about 25 ° C (normal temperature range (25 to 15 ° C) or less) and the upper limit of the storage humidity is set to about 45% RH, the increase in aging time is suppressed and the moisturizer is familiar to the sheet. It becomes possible to balance with promotion.

In the present embodiment, the first roll 3 installed on the pallet 5 can be covered with a non-permeable member (for example, a plastic film 6) by winding it around the body. In the present embodiment, the first roll 3 installed on the pallet 5 is covered with a bag-shaped impermeable member (plastic film) 6 and the bag-shaped impermeable member (made of plastic). The opening 6a of the film 6) 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 this embodiment, as will be described later, the material of the impermeable member 6 is polypropylene. Further, the aging area for aging the first roll 3 does not have to be a dedicated area, and aging may be performed in the above-mentioned coating area or other area as long as the aging storage environment is satisfied.

The non-permeable member covering the first roll 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 transmitted to the tissue paper. There is a risk of moving. In the present embodiment, as will be described later, by setting the aging time to 3 to 12 hours, the permeability of the moisturizer is ensured and the transfer of the odor of the additive is suppressed. Examples of the additive include a plasticizer and a stabilizer added to soften a plastic film.

The non-permeable member is made of, for example, a plastic film, and the plastic film contains, 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 non-permeable 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 plasticizer are not particularly limited, and examples thereof include PP random copolymers and the like.

Further, the cut first roll starts to be covered with the non-permeable 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 "wrapping" and "sealing" in addition to "covering" the meaning of covering an object on or outside the object. Referenced. In the present embodiment, the cut first roll begins to be covered with the non-permeable 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 non-permeable member is left in the aging area for a predetermined time after the covering step in order to perform aging to acclimatize the moisturizer in the aging area. The predetermined time is preferably 3 hours or more and 12 hours or less, more preferably 4 hours or more and 12 hours or less, and 3 hours or more and 6 hours or less in order to effectively exert the effect. More preferably, it is more preferably 4 hours or more and 6 hours or less. In the present embodiment, the predetermined time is 4 hours.

The lower limit of the aging time is the minimum value necessary for ensuring the permeability of the moisturizer to the sheet W2, and if the aging time is 3 hours or more, the permeability of the moisturizer can be ensured. If the aging time is 4 hours or more, the permeability of the moisturizer can be ensured more reliably.
The upper limit of the aging time is a value required to suppress the transfer of the odor of the additive, and if the aging time is suppressed to 12 hours or less, the transfer of the odor of the additive can be suppressed, and the aging time is set to 6. If it is suppressed to less than an hour, the transfer of the odor of the additive can be further suppressed.

The storage environment in the aging area where the aging step is performed is set so that the storage temperature is 15 to 18 ° C. and the storage humidity is 40% RH or less. As a result, it is possible to suppress an increase in the aging time and promote the familiarization of the moisturizer into the sheet W2 while lowering the storage temperature to 15 to 18 ° C., and the moisturizer is uniformly contained while shortening the aging time. You can get the temperature paper.
Since the storage temperature is 15 to 18 ° C and the storage humidity is 40% RH or less, the amount of temperature adjustment and humidity adjustment by the air conditioner is reduced, especially in winter when the temperature is low and the humidity is low, and the power required for the air conditioner is reduced. It can be suppressed.

Further, in the present embodiment, since the storage temperature is kept within a predetermined range (15 to 18 ° C.), the moisturizer is uniformly blended into each part of the sheet W2, and the quality of the moisturizing tissue paper is stabilized. Although the storage humidity is set to 40% RH or less, it is preferable to keep the storage humidity constant so that the moisturizer can be uniformly blended into each part of the sheet W2.

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, 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 method for producing the tissue paper described above, 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 material 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 application of the moisturizer 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, and covered with a plastic film. Alternatively, for example, as shown in FIG. 3B, the first roll 3 installed on the pallet 5 is covered with the bag-shaped plastic film 6, and the opening 6a of the bag is fixed to the pallet 5.

In the aging step S4, the first roll 3 covered with the plastic film 6 is placed in a predetermined storage environment (storage temperature is 15 to 18 ° C. and storage humidity is 40% RH or less) in the aging area 4 for a predetermined time (for example, 40% RH or less). Leave it on the pallet 5 for 3 to 12 hours) and let the tissue paper blend with 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 folding carton with a rotary type or multi-stand type interfolder. To do.

Conventionally, in the production of moisturizing tissue paper to which a moisturizer is added, a moisturizer is applied to a continuous sheet drawn from a raw fabric roll and wound up, and the rolled continuous sheet after application is aged for a predetermined time to obtain a moisturizer. Is then blended into a continuous sheet, then cut to the width of the product and folded to produce a moisturizer-added tissue paper.

Here, in the above step of blending the moisturizer into the continuous sheet, in order to suppress 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 above time is too long, the odor of the rolled plastic film (for example, 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 the present embodiment, since the non-permeable 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 sufficiently applied to the tissue paper. It becomes possible to infiltrate. Further, by limiting the aging time to a certain range, it is possible to suppress the transfer of the odor of the non-permeable member to the tissue paper.

In addition, since the moisturizer sufficiently permeates the entire tissue paper and spreads evenly, it is possible to improve the feel and moist feeling.

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 and modifications described everywhere, and appropriate modifications and modifications can be made without departing from the technical idea of the present invention.

For example, the tissue paper according to the modification which is easy to carry out is a 2-ply one, but the present invention is not limited to this, and a 1-ply or 3-ply or more one can be applied.

In the above embodiment, the roll is covered with a non-permeable member for aging, whereby the shortening of the aging time is promoted and the volatilization of the moisturizer is suppressed, but the roll is covered with the non-permeable member. Even when aging is performed without aging, by appropriately managing the aging storage environment (storage temperature and storage humidity), it is possible to shorten the aging time and promote the familiarization of the moisturizer.

In the above embodiment, the first roll 3 is installed on the pallet 5 for aging, but it is not essential to install the first roll 3 on the pallet 5 at the time of aging.
Further, in the above embodiment, tissue paper is exemplified as the moisturizing paper, but the moisturizing paper that can be produced by this method is not limited to this, and various papers such as sanitary paper such as toilet paper and paper towels are used. Can be suitable for the kind.

WR1a, WR1b 1st original roll WR2 2nd original roll RU1a, RU1b Rewind reel RW Take-up reel RP ply part VUa, VUb Machining speed W1 Continuous sheet W2 Laminated continuous sheet FF Laminated continuous sheet outer surface FB Laminated Inner surface of continuous sheet F1 1st layer sheet F2 2nd layer sheet 1 Coating device 2 Coating part 3 1st roll 4 Aging area 5 Pallet (plate-shaped member)
6 Plastic film (non-permeable member)

The method for producing a moisturizing paper according to the present case is a method for producing a moisturizing paper to which a moisturizer is added, and is applied to the paper produced in the paper making process in accordance with the outside air temperature within the first temperature range. The coating step including the step of applying the moisturizer by controlling the temperature of the moisturizer to the temperature and the paper roll in which the moisturizing paper coated with the moisturizer is rolled are defined as the first temperature range. Is specified in the aging area in a storage environment where the temperature is within the second temperature range, which is lower than the first temperature range, and the humidity is lower than the standard humidity at room temperature. and time store aging step, the is characterized in including it.

The first temperature range a 34-48 ° C., the second temperature range and the predetermined humidity at 12 to 23 ° C. is preferably a 40% R H.
Between the front Kinuriko step and the aging step, it is preferable to provide a cover step of covering the paper roll in a non-permeable member.
The predetermined time is preferably 3 hours or more and 12 hours or less.
The paper roll is preferably covered with the non-permeable member within 60 minutes from the start of application of the moisturizer.
The coating step includes a winding step of winding the moisturizing paper coated with the moisturizer into a roll shape, and a gap of 5 minutes or more may be provided between the winding step and the covering step. preferable.
In the aging step, it is preferable that the paper roll covered with the non-permeable member is stored in the aging area in a posture in which the winding axis of the paper roll is vertical.
The non-permeable member has a bag shape, and in the covering step, the paper roll is installed on the plate-shaped member in the aging area so that its winding axis is vertical, and the bag-shaped member is formed. It is preferable to cover the non-permeable member and fix the opening of the bag-shaped non-permeable member to the plate-shaped member.
The coating step preferably includes a step of applying the moisturizer to both surfaces of the paper produced in the papermaking step.
After the aging step, a step of cutting the moisturizing paper drawn from the paper roll to a desired width, a step of folding the cut moisturizing paper, and a step of filling a carton with a bundle of the folded moisturizing paper. , And the folding step is preferably performed in equipment including a rotary or multi-stand interfolder.
The non-permeable member is preferably made of a plastic film.
The plastic film preferably contains polypropylene or polyethylene.

The method for producing a moisturizing paper according to the present case is a method for producing a moisturizing paper to which a moisturizer is added, and is applied to the paper produced in the paper making process in accordance with the outside temperature within the first temperature range. The coating step including the step of applying the moisturizer by controlling the temperature of the moisturizer to the temperature and the paper roll in which the moisturizing paper coated with the moisturizer is rolled are defined as the first temperature range. Is specified in the aging area in a storage environment where the temperature is within the second temperature range, which is lower than the first temperature range, and the humidity is lower than the standard humidity at room temperature. see containing and time store aging step, and said humectant is characterized to include glycerin and water.
The ratio of the mass% of the glycerin to the water contained in the moisturizer is preferably in the range of 70:30 to 85:15.

Claims (6)

A method for producing moisturizing paper to which a moisturizer is added.
A coating process that includes the process of applying a moisturizer to the paper produced in the papermaking process, and
The aging step of storing a paper roll in which a moisturizing paper coated with the moisturizer is applied in a roll shape in an aging area for a predetermined time is included.
The storage environment of the aging area is a method for producing a moisturizing paper, characterized in that the temperature is 25 ° C. or lower and the humidity is 45% RH or lower. The method for producing a moisturizing paper according to claim 1, wherein the storage environment of the aging area is a temperature of 12 to 23 ° C. and a humidity of 40% RH or less. The method for producing a moisturizing paper according to claim 1 or 2, wherein the temperature of the moisturizer in the coating step is 34 to 48 ° C. The moisturizing paper according to any one of claims 1 to 3, further comprising a covering step of covering the paper roll with a non-permeable member between the coating step and the aging step. Production method. The method for producing a moisturizing paper according to claim 4, wherein the predetermined time is 3 hours or more and 12 hours or less. A moisturizing paper product, which comprises filling a carton with a moisturizing paper produced by the method for producing a moisturizing paper according to any one of claims 1 to 5.

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