JP4171483B2 - Manufacturing method and manufacturing equipment for household sanitary thin paper - Google Patents

Description

  The present invention relates to a method for manufacturing household sanitary thin paper and a manufacturing facility therefor.

  Conventionally, high-quality tissue paper (which is called dry type tissue paper for wet type) and toilet paper, etc. that softened the touch by containing so-called lotion chemicals, etc. Home hygiene tissue paper is known.

As a method of applying a chemical solution to this sheet (fiber web), for example, a method of spraying a chemical solution, dipping in a chemical solution, or applying a chemical solution with a coating roll is employed. As a method using a coating roll, there is known a method in which a lotion chemical solution is simultaneously applied to both surfaces of a sheet by a so-called gravure transfer type lotion chemical application device (see, for example, Patent Document 1). Further, a method of impregnating a sheet with a chemical solution online is also known (for example, see Patent Document 2).
Japanese National Patent Publication No. 10-501853 JP-A-5-156596

  However, when the chemical solution is applied, the crepe or the like applied to the sheet is stretched by the lotion chemical solution. However, since the variation in elongation occurs due to uneven coating in the width direction of the original fabric, this variation is uniform in the conventional method. If folding or winding is performed without converting the sheet into a sheet, wrinkles may occur in the sheet, and sheet size may vary when the sheet is folded.

  Accordingly, a main problem of the present invention is to provide a manufacturing method and a manufacturing facility for household sanitary thin paper that uniformly diffuses and permeates a chemical solution into a sheet and prevents wrinkling of the sheet.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
In inter folder,
This continuous sheet is obtained by winding up a base paper made of pulp fibers with a predetermined width and rewinding two continuous ply sheets each having a basis weight of 10 to 25 g / m ² per ply from the wound roll. In addition, a chemical solution is continuously applied to each outer surface of the continuous sheet by two rolls transfer so that the content per sheet unit volume is 12 to 45 mg / cm ^3, and then folded and stacked to produce a product. A method of manufacturing sanitary thin paper for
Between the roll transfer of the chemical solution and the folding stacking process,
A continuous sheet coated with chemicals is composed of a steel roll that has been processed to make it easy to peel or prevent wear on the outer peripheral surface, and a roll that is coated with silicon rubber on the outer peripheral surface of the steel roll. The continuous sheet is stretched by 3 to 20% while being sandwiched and pressed at a linear pressure of 3.0 to 9.0 kg / cm with a press roll.
A method for producing a sanitary thin paper for household use.

<Invention of Claim 2>
This continuous sheet is obtained by winding up a base paper made of pulp fibers with a predetermined width and rewinding two continuous ply sheets each having a basis weight of 10 to 25 g / m ² per ply from the wound roll. In addition, the chemical solution is continuously applied to each outer surface of the continuous sheet by two rolls transfer so that the content per unit volume of the sheet is 12 to 45 mg / cm ^3, and then wound up again and commercialized in a separate process. A method for producing household hygiene tissue paper,
Between the roll transfer of the chemical solution and the rewinding process again,
A continuous sheet coated with chemicals is composed of a steel roll that has been processed to make it easy to peel or prevent wear on the outer peripheral surface, and a roll that is coated with silicon rubber on the outer peripheral surface of the steel roll. The continuous sheet is stretched by 3 to 20% while being sandwiched and pressed at a linear pressure of 3.0 to 9.0 kg / cm with a press roll.
A method for producing a sanitary thin paper for household use.

<Invention of Claim 3>
In an interfolder, a base paper made of pulp fibers is wound up with a predetermined width, and a two-ply continuous sheet having a basis weight of 10-25 g / m ² per ply is rewound from the wound roll. The chemical solution is continuously applied to each outer surface of the continuous sheet by two roll transfer so that the content per unit volume of the sheet is 12 to 45 mg / cm ^{3 on the} continuous sheet , and then folded and stacked. A facility for producing household hygiene tissue paper to be commercialized,
Between the roll transfer of the chemical solution and the folding and stacking means,
Consisting of a steel roll that has been processed to facilitate the peeling of the continuous sheet on the outer peripheral surface or to suppress wear, and a roll that is coated with silicon rubber on the outer peripheral surface of the steel roll. , Having a press roll that is sandwiched and pressed at a linear pressure of 3.0 to 9.0 kg / cm and stretched by 3 to 20%.
This is a facility for manufacturing household hygiene thin paper.

<Invention of Claim 4>
This continuous sheet is obtained by winding up a base paper made of pulp fibers with a predetermined width and rewinding two continuous ply sheets each having a basis weight of 10 to 25 g / m ² per ply from the wound roll. In addition, the chemical solution is continuously applied to each outer surface of the continuous sheet by two rolls transfer so that the content per unit volume of the sheet is 12 to 45 mg / cm ^3, and then wound up again and commercialized in a separate process. Manufacturing equipment for household sanitary thin paper,
Between the roll transfer of the chemical solution and the rewinding process again,
Consisting of a steel roll that has been processed to facilitate the peeling of the continuous sheet on the outer peripheral surface or to suppress wear, and a roll that is coated with silicon rubber on the outer peripheral surface of the steel roll. , Having a press roll that is stretched by 3 to 20% while being sandwiched and pressed at a linear pressure of 3.0 to 9.0 kg / cm,
This is a facility for manufacturing household hygiene thin paper.

(Function and effect)
By pressing a continuous sheet coated with a chemical with a press roll, the chemical can be uniformly diffused and permeated into the sheet (for example, the amount of impregnation in the width direction of the sheet is made uniform) and the wrinkles of the sheet Occurrence can be prevented.

  If it demonstrates in detail, the continuous sheet | seat with which the chemical | medical solution was apply | coated will expand | extend according to the ratio of the impregnation of a chemical | medical solution. If the rate of impregnation with the chemical solution varies depending on the region of the continuous sheet, the rate of shrinkage and the time vary depending on the region of the continuous sheet during drying, which leads to the occurrence of wrinkles due to the difference in shrinkage, so-called “wrinkles”. When continuous processing such as crease occurs in the subsequent folding and winding processes, crease and crease are generated at the place other than the position to be folded. However, in the case of folding, variations in the sheet size occur, and in the winding process, “hijiwa” mainly occurs.

  On the other hand, in the present invention, the continuous sheet on which the chemical solution is applied is forcibly pressed by a press roll to expand the continuous sheet, and the chemical solution is uniformly diffused and permeated inside the sheet. Can be effectively prevented.

  Moreover, when pressing by a press roll according to this invention, it is preferable to extend a continuous sheet 3 to 20% by pressing. If the stretch is too small, it will be difficult to suppress the occurrence of “hijiwa”. If the stretch is excessive, it will be possible to suppress the occurrence of “hijiwa”, but this will cause a so-called paper breakage that causes continuous sheets to be cut.

  Moreover, when pressing by a press roll according to this invention, it is preferable to carry out by the linear pressure of 3.0-9.0 kg / cm. If the pressing force is too weak, the continuous sheet cannot be sufficiently stretched, and it becomes difficult to prevent the occurrence of “hiding”, and the chemical solution cannot be uniformly diffused and penetrated into the sheet. If the pressing force is too strong, the occurrence of “hiding” and the diffusion / penetration of the chemical into the sheet can be suppressed, but the continuous sheet breaks, and so-called paper breakage easily occurs.

  As described above, according to the present invention, there are advantages that the chemical solution can be uniformly diffused and permeated into the sheet, and the occurrence of wrinkling of the sheet can be prevented.

Embodiments of the present invention will be described below.
<Manufacturing form>
First, the example of the manufacturing method of the household sanitary thin paper based on this invention is demonstrated below.
In the manufacture of boxed tissue paper, etc., after making thin paper from pulp fibers (preferably 100% virgin pulp fiber that does not contain waste paper pulp) in a paper machine, crepes and calendering if necessary This is wound up to produce a primary roll (generally also referred to as a jumbo roll). Next, although not shown, this primary roll is set in a known ply machine and fed out from a plurality of primary rolls. Further, the primary continuous sheet is overlapped and wound, and is cut into a plurality of pieces (divided into a plurality in the width direction) to produce a secondary raw roll made of a plurality of plies.

  The secondary web roll produced by the ply machine is taken out from the ply machine and then set in the interfolder shown in FIG. In the inter folder, the secondary continuous sheets fed out from the secondary material roll are stacked while being folded in the inter folder. The folded laminate manufactured by the interfolder is cut at a distance equal to the width of the product tissue paper in the longitudinal direction in the subsequent equipment, and becomes a product through processing such as boxing and packaging.

FIG. 1 shows a process in an interfolder according to the present invention.
That is, in the interfolder, a continuous sheet from the winding rolls 1 and 2 as the above-described secondary raw rolls obtained by winding a base paper made of pulp fibers with a natural number of times, especially a multiple of the width of the product tissue paper. 10 and 20 are rewound, and these are folded and stacked by the folding and stacking means 50.

  The set of interfolders shown in the figure has a large number in the direction penetrating the drawing, and the final folded laminate is cut in the longitudinal direction in the rear-stage equipment at intervals equal to the width of the product tissue paper, and packed, packed, etc. The product is processed through this process.

  Now, the two-ply continuous sheets 10 and 20 from the take-up rolls 1 and 2 are subjected to tension control by the tension controllers 31 and 41, and then have a narrow embossing roll between this and the elastic roll. Ply bonding is performed by ply bonding means 32 and 42 that nip the sheet in a pressed state. Thereafter, a chemical liquid pan is provided, the chemical liquid is picked up by a gravure roll, and the chemical liquid is continuously applied by roll transfer by roll transfer devices 33, 34, 43, and 44 that transfer the chemical liquid to a target sheet. Here, the two-ply continuous sheets 10 and 20 are provided with the two roll transfer devices 33 and 34 and the roll transfer devices 43 and 44, respectively. This is because a chemical solution is applied to the skin. As shown in FIG. 1, it is desirable that the ply bonding means 32 and 42 be arranged in front of the roll transfer devices 33, 34 and 43 and 44. If the reverse is true, the chemical solution is applied to the entire surface of the sheet, and the bonding strength decreases when ply bonding is performed on both sides of the sheet width.

  After applying the chemical solution, the continuous sheets 10 and 20 are pressed by the press devices 35 and 45. As shown in FIG. 2, the pressing devices 35 and 45 include, for example, first rolls 35A and 45A formed of steel rolls, and second rolls 35B and 45B in which the outer peripheral surface of the steel roll is coated with silicon rubber, The first and second rolls 35A, 45A and the second rolls 35B, 45B sandwich the continuous sheets 10 and 20 and press them.

  Thus, after apply | coating a chemical | medical solution, by pressing the continuous sheets 10 and 20 with the press apparatuses 35 and 45, a chemical | medical solution can be uniformly spread | diffused and osmose | permeated inside a sheet | seat (for example, the impregnation of the width direction of a sheet | seat) In addition, the sheet can be stretched to prevent wrinkling of the sheet. By preventing the generation of wrinkles, it is possible to prevent wrinkles from entering the sheet during the subsequent folding and winding processes, and also to prevent variations in sheet dimensions in the case of folding. can do.

  The pressing force (linear pressure) by the press rolls of the pressing devices 35 and 45 is preferably in the range of 3.0 to 9.0 kg / cm, and particularly preferably in the range of 4.0 to 8.0 kg / cm. If the pressing force is too weak, the continuous sheet cannot be sufficiently stretched, it becomes difficult to prevent the occurrence of “hiding”, and the chemical cannot be uniformly diffused and penetrated into the sheet. If the pressing force is too strong, the occurrence of “hiding” and the diffusion / penetration of the chemical into the sheet can be suppressed, but the continuous sheet breaks, and so-called paper breakage easily occurs.

  The degree of expansion of the continuous sheet may be appropriately determined depending on the crepe rate of the sheet, but in the case of the household sanitary thin paper of the present invention, it is sufficient to extend it by 3 to 20%. If the stretch is too small, it will be difficult to suppress the occurrence of “hijiwa”. If the stretch is excessive, it will be possible to suppress the occurrence of “hijiwa”, but this will cause a so-called paper breakage that causes continuous sheets to be cut.

  Thereafter, embossing is applied to the continuous sheets 10 and 20 by the embossing devices 36 and 46, and the continuous sheets 10 and 20 are folded and stacked by the folding and stacking means (interfolder body) 50 as described above.

  In the above manufacturing method, the chemical solution is applied to the sheet fed from the winding rolls 1 and 2 and pressed, and then folded and stacked by the folding and stacking means 50 online. Not limited to this, a chemical solution may be applied to a sheet and pressed, and then wound up again, and may be folded and stacked by a folding and stacking unit in a separate process (offline process).

In the present invention, the first rolls 35A and 45A are coated with a steel roll, and the second rolls 35B and 45B are coated with silicon rubber on the outer peripheral surface of the steel roll.
As a reference, the materials of the outer peripheral surfaces of the first rolls 35A and 45A and the second rolls 35B and 45B can be the same material or different materials.
Either one of the outer peripheral surfaces may be made of an elastic material and the other outer peripheral surface may be made of an inelastic hard material, or both outer peripheral surfaces may be made of an elastic material or an inelastic material.

  Examples of the material for the outer peripheral surface of the press roll include steel, silicon, neoprene, urethane, NBR (nitrile butadiene rubber), and the like, and in particular, a continuous sheet coated with a chemical is easily peeled from the outer peripheral surface of the roll. Is preferred.

  Even if the outer surface of the press roll is made of the material of each roll itself, it can be coated or covered with another material (covering or wrapping another material on another material, or wrapping it on the surface of a certain material) Including the formation of a film of the above material. Examples of the coating material include silicon, neoprene, urethane, NBR, Teflon (registered trademark of EI DuPont de Nemours and Company), and “Tafram” of ULVAC TECHNO CORPORATION is particularly effective. Can be mentioned. By applying such coating or the like, the continuous sheet to which the chemical solution is applied is easily peeled off from the outer peripheral surface of the press roll, and the prevention of the transfer of the chemical solution to each roll and the prevention of the adhesion of paper powder.

  As a preferable combination of the first rolls 35A and 45A and the second rolls 35B and 45B, one of them is a steel roll that has been subjected to processing that facilitates peeling of the sheet or suppresses wear on the outer peripheral surface, and the other is the outer periphery. The combination which makes the steel roll which coat | covered the silicone rubber on the surface can be mentioned.

  On the other hand, in the paper making process, when another kind of chemical solution other than the target chemical solution of the present invention is applied, for example, a softener composed of a surfactant, a wet paper strength agent such as starch or dextrin, or one or more of carboxymethylcellulose is applied. The texture can be improved in combination with the target drug solution of the present invention.

<Chemicals>
In applying the so-called lotion chemical solution, it is desirable that the content per sheet unit volume showing a moisture content of about 6% after paper making is 12 to 45 mg / cm ³ , particularly 18 to 40 mg / cm ³ . If the chemical content is low, it is difficult to obtain the following target characteristics. Increasing the chemical solution content not only increases the cost as the chemical solution is used, but also gives a feeling of stickiness during use and a residual feeling of the chemical solution after use. In the present invention, in spite of a small amount of the chemical solution used, the following characteristics are largely related to lowering the rice paper weight.

That is, the desirable rice basis weight per ply of the base paper of the present invention is 10 to 25 g / m ² , particularly preferably 10 to 15 g / m ² . Since the rice tsubo is low, the stiffness of the paper can be weakened, and it becomes sufficiently flexible. However, if it is too low, the strength will decrease.

  The softness of the product is preferably 0.5 to 1.0 g, particularly 0.6 to 0.8 g. If it is less than 0.5 g, there is a problem that the flexibility of the paper is weak but the stiffness of the paper is weakened. If it exceeds 1.0 g, the flexibility is weakened and the paper becomes hard.

  Although it is not limited to the lotion chemical | medical solution in this invention, it mainly focuses on improving the touch (texture), moisturizing property, reducing the irritation | stimulation to the skin of a pulp fiber, or raising a moist feeling. Things can be mentioned.

  Examples of moisturizing chemicals include polysiloxanes such as silicone oil and silicone powder, polyhydric alcohols such as glycerin, diglycerin, propylene glycol, 1,3-butylene glycol, and polyethylene glycol, sorbitol, glucose, xylitol, maltose, and maltitol. And saccharides such as mannitol and trehalose, glycol solvents, and derivatives containing at least one moisturizing agent among derivatives thereof.

  Furthermore, higher alcohols such as cetanol, stearyl alcohol and oleyl alcohol, liquid paraffin and the like can be used.

  In addition, in the chemical solution, amino acids such as glycine, aspartic acid, arginine, alanine, cystine, cysteine; Plant extract: olive oil, jojoba oil, rosehip oil, almond oil, eucalyptus oil, avocado oil, camellia oil, soybean oil, safflower oil, sesame oil, evening primrose oil, etc .; vitamins, hydrolyzed collagen, hydrolyzed keratin, Hydrolyzed silk, chitosan, urea, honey, royal jelly, sodium hyaluronate, ceramide, squalane, petrolatum and the like can be blended.

  Here, there are vitamin C, vitamin E, and collagen. This type has a moisturizing function. Vitamin C and vitamin E also function as antioxidants. Vitamin E is a component with a strong reducing power and has an antioxidative action that eliminates active oxygen and free radicals and prevents the generation of lipid peroxide. Therefore, vitamin E functions as a chemical liquid stabilizer, and when applied to the skin of a person who uses thin paper, the effect of preventing the sebum of the skin and promoting blood circulation are exhibited. There is also a moisturizing function. Vitamin C, like vitamin E, has sebum antioxidant activity. Vitamin C has the action of reducing vitamin E, so if both vitamin C and E are used, vitamin C works as an auxiliary to vitamin E, reducing vitamin E oxidized by active oxygen, etc. The effect | action which maintains the antioxidant action of the powerful sebum of E is show | played. Collagen forms 90% of the dermis of the skin, and when this decreases, the skin loses moisture and tension. Therefore, by making it contain in thin paper, while exhibiting the moisturizing effect which moisturizes skin when this contacts with skin, the moisturizing effect is exhibited also to thin paper.

  Furthermore, as a chemical solution, when the pH is set to be weakly acidic with a pH of 5.0 to 6.0, the skin does not become alkaline even when brought into contact with the skin, and the skin is rough due to the influence of the chemical solution pH. Can be effectively prevented. A particularly preferred pH range is 5.3 to 5.7. The pH can be adjusted by adding an acidic or basic pH adjuster to the chemical solution. When the chemical solution is strongly acidic, an aqueous sodium hydroxide solution or an aqueous potassium hydroxide solution can be used. In the case of neutral / alkaline, citric acid, malic acid and lactic acid can be used.

  Examples of the chemical solution for obtaining a refreshing sensation include sorbitol, altitol, xylitol, erythritol, lactitol, and palatinit. Particularly preferred are erythritol, xylitol and sorbitol, and more preferred is erythritol or xylitol. Furthermore, one or two or more kinds of cooling sensitizers selected from the group of menthol, salicylic acid, α-cinerol, and derivatives thereof can be included. In this case, it is desirable that the agent for obtaining the refreshing feeling is contained unevenly on the surface of the paper base material in a state dispersed in the binder component.

  On the other hand, additives desirable to be added in the papermaking stage include wet paper strength agents, softeners and carboxymethylcellulose.

  A typical example of a softener is a surfactant-based softener, and examples of the softener include anionic surfactants, nonionic surfactants, cationic surfactants, and zwitterionic surfactants. It can be appropriately selected and used. When an anionic surfactant is used, the stiffness (bending rigidity) of the base paper can be reduced to the above-described range, and thus the moisturizing feeling by the moisturizing agent and the soft feeling by the softening agent can be promoted. As the anionic surfactant, carboxylate, sulfonate, sulfate ester, phosphate ester, and the like can be used. An alkyl phosphate ester salt is particularly preferable.

  Examples of nonionic surfactants include sorbitan fatty acid esters, diethylene glycol monostearate, diethylene glycol monooleate, glyceryl monostearate, glyceryl monooleate, and polyhydric alcohol monofatty acid esters such as N- (3- Oleiroshiki-2-hydroxypropyl) diethanolamine, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitan beeswax, polyoxyethylene sorbitan sesquistearate, polyoxyethylene monooleate, polyoxyethylene monolaurate, polyoxyethylene cetyl ether Polyoxyethylene lauryl ether can be used.

  As the softening agent, it is desirable to use a cationic surfactant. As the cationic surfactant, a quaternary ammonium salt, an amine salt, an amine, or the like can be used. In addition, as the zwitterionic surfactant, an aliphatic derivative of a secondary or tertiary amine containing carboxy, sulfonate, sulfate, an aliphatic derivative of a heterocyclic secondary or tertiary amine, or the like is used. be able to.

  As the wet strength (enhancement) agent, in addition to the melamine-formaldehyde addition condensate and the urea-formaldehyde addition condensate, the following can be preferably used in consideration of the environment. Polyacrylamide, polyvinyl alcohol, glyoxal / polyacrylamide copolymer, polyamide epichlorohydrin resin whose number of functional groups is reduced to 1/10 the usual number, dialdehyde starch or cation-modified starch, oxidized starch, etc. More specifically, it has a cationic property. Thermosetting resins comprising a polyvinylamide copolymer and a divalent aldehyde (for example, Japanese Patent Publication No. 44-26670, Japanese Patent Publication No. 54-44762, Japanese Patent Publication No. 57-149595), cationic aldehyde-modified polyacrylamide A copolymer (JP-A-6-184985, JP-A-8-56868), a cationic polymer and an anionic polymer, wherein at least one polymer of the cationic polymer and the anionic polymer is Hydrophobic (JP 2002-2002 75787 JP) or the like, we can be used known ones.

<Combination of chemical solution>
A preferred additive formulation of the present invention is shown below.
Active ingredient 60-100% by weight (especially 80-100% by weight)
Chemical solution 95-100% by weight (especially 95.5-97.0% by weight)
Softener 0-5 wt% (especially 3.0-4.5 wt%)
Wet paper strength agent 0-5 wt% (especially 3.0-4.5 wt%)
CMC 0-5 wt% (especially 3.0-4.5 wt%)
・ Moisture 0-40% by weight

<Manufacturing conditions>
In producing the hygienic thin paper for household use is, 10 to 25 g / m ² of preferably per ply in the papermaking process, and optimally adjust the pulp and paper making conditions such that the range at 10 to 15 g / m ² . As a raw material pulp, waste paper pulp can be included at a ratio of 50% or less as necessary, but is preferably virgin pulp, and is composed of NBKP and LBKP, and the ratio of NBKP is 30 to 70%, particularly 40 to 40%. 60% is desirable. Then, it is desirable to add a wet paper strength agent, a softening agent, and carboxymethyl cellulose (CMC) to make paper.

  At this time, the beating width of the raw pulp can be narrowed to increase the density. In general, when the density is increased by specifying the rice tsubo, the paper strength increases and the paper thickness decreases and the soft feeling does not appear.However, in the subsequent creping process, the crepe blade angle is adjusted to increase the crepe rate. If you increase it, you will feel soft.

  Finally, in the calendar processing step, the calendar processing is performed by adjusting the pressure in each calendar processing of the online machine calendar and the ply machine calendar so that the paper thickness does not fall excessively and falls outside the range of the target paper thickness.

  That is, when the above production method is adopted, a raw paper having a thin paper thickness and a high surface smoothness is formed by narrowing the beating width of the raw pulp and increasing the density, and the raw paper is creped at a high crepe rate. As a result, a fluffy feeling is developed while having smoothness, and the final paper thickness is adjusted in the subsequent calendar processing. In addition, what is necessary is just to adjust suitably with the specific crepe rate, the manufacturing equipment to be used, an additive, and the mixture ratio of raw material pulp.

As described above, a 2-ply product of 10 to 25 g / m ² is desirable for the rice basis weight per ply of the household sanitary thin paper of the present invention, but if necessary, it can be laminated to 3 plies or more.

<Oil KES touch index>
The oil KES touch index is preferably 6.5 or less.
For this measurement, as shown in FIGS. 3 to 5, an artificial leather (supplera: Idemitsu Techno Fine Co., Ltd.) is placed on the base of a friction tester “KES SE” manufactured by Kato Tech Co., Ltd. The measuring terminal T is covered with artificial leather (supplera: manufactured by Idemitsu Techno Fine Co., Ltd.), and olive oil is applied to the measuring surface of the measuring terminal covered with artificial leather (contact plane). (BOSCO extra virgin oil: NISSIN SEIMITSU OIL) 4 mg can be uniformly applied, and the measurement can be performed in the same manner as the MMD measurement procedure. Specifically, the contact plane made of artificial leather is composed of a piano wire with a cross-sectional diameter of 0.5 mm, has a unit bulging portion with a radius of curvature of 0.25 mm adjacent to it, and has a total width of 10 mm. An MMD measurement terminal having a continuous measurement surface and a measurement surface of approximately 10 mm square with a measurement surface length of 10 mm can be formed by covering with the artificial leather. The covering of the terminal with the artificial leather is carried out by covering the terminal with the artificial leather so that a contact plane of 10 mm square is formed or so that the artificial leather is in close contact with the measurement surface of the terminal or with a slight tension. Can be achieved. When fixing the artificial leather to the terminal, make sure to fix the artificial leather so that the artificial leather and the internal terminal do not move and the contact plane is distorted during measurement, that is, when the paper sample is moved. is important. For example, after the terminal is covered so that the contact plane is formed, a portion that does not form the contact plane is firmly fixed to a portion that does not affect the measurement of the apparatus with a rubber band or the like, for example, a support material of the terminal. . Also, artificial leather is laid on the base of the MMD testing machine and fixed with adhesive tape or the like. At this time, it is important to firmly fix the artificial leather to the base so as not to be distorted during measurement. The artificial leather laid on the base is the same as the artificial leather constituting the contact plane. In addition, the paper sample is cut into a 10 cm square and used, and is fixed to a base on which artificial leather is laid. At the time of measurement, a sample pressing weight (about 100 g) is pressed on a paper sample. In addition, the load on the measuring terminal of the testing machine is set to 50 g, and the entire contact plane made of artificial leather is brought into contact with the paper sample with a contact pressure of 50 gf / cm ^2. This is similar to the MMD measurement. This can be achieved by attaching a disk-shaped weight to the top of the terminal. Of course, the method of fixing one end of the support material (the end opposite to the moving direction of the paper sample) conforms to the MMD measurement. The measurement is performed three times in the vertical direction of the paper sample and three times in the horizontal direction, for a total of 6 times, and the measured value is the average of the 6 times.

It is a schematic diagram of the manufacture form of the household sanitary thin paper of this invention. It is an enlarged front view of a press roll. It is a figure which shows the measurement terminal of the oil KES touch index, and the outline at the time of a measurement. It is a figure which shows the outline of the example of the measuring apparatus of surface characteristics. It is a figure for demonstrating the structure of the contact plane.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1, 2 ... Winding roll 10, 20 ... Continuous sheet, 50 ... Folding and stacking means, 32, 42 ... Ply joining means, 33, 34, 43, 44 ... Roll transfer device, 35, 45 ... Press devices 35A, 45A ... 1st roll, 35B, 45B ... 2nd roll, 36, 46 ... Emboss provision apparatus.

Claims (4)

In inter folder,
This continuous sheet is obtained by winding up a base paper made of pulp fibers with a predetermined width and rewinding two continuous ply sheets each having a basis weight of 10 to 25 g / m ² per ply from the wound roll. In addition, a chemical solution is continuously applied to each outer surface of the continuous sheet by two rolls transfer so that the content per sheet unit volume is 12 to 45 mg / cm ^3, and then folded and stacked to produce a product. A method of manufacturing sanitary thin paper for
Between the roll transfer of the chemical solution and the folding stacking process,
A continuous sheet coated with chemicals is composed of a steel roll that has been processed to make it easy to peel or prevent wear on the outer peripheral surface, and a roll that is coated with silicon rubber on the outer peripheral surface of the steel roll. The continuous sheet is stretched by 3 to 20% while being sandwiched and pressed at a linear pressure of 3.0 to 9.0 kg / cm with a press roll.
A method for producing a sanitary thin paper for household use. This continuous sheet is obtained by winding up a base paper made of pulp fibers with a predetermined width and rewinding two continuous ply sheets each having a basis weight of 10 to 25 g / m ² per ply from the wound roll. In addition, the chemical solution is continuously applied to each outer surface of the continuous sheet by two rolls transfer so that the content per unit volume of the sheet is 12 to 45 mg / cm ^3, and then wound up again and commercialized in a separate process. A method for producing household hygiene tissue paper,
Between the roll transfer of the chemical solution and the rewinding process again,
A continuous sheet coated with chemicals is composed of a steel roll that has been processed to make it easy to peel or prevent wear on the outer peripheral surface, and a roll that is coated with silicon rubber on the outer peripheral surface of the steel roll. The continuous sheet is stretched by 3 to 20% while being sandwiched and pressed at a linear pressure of 3.0 to 9.0 kg / cm with a press roll.
A method for producing a sanitary thin paper for household use. In an interfolder, a base paper made of pulp fibers is wound up with a predetermined width, and a two-ply continuous sheet having a basis weight of 10-25 g / m ² per ply is rewound from the wound roll. The chemical solution is continuously applied to each outer surface of the continuous sheet by two roll transfer so that the content per unit volume of the sheet is 12 to 45 mg / cm ^{3 on the} continuous sheet , and then folded and stacked. A facility for producing household hygiene tissue paper to be commercialized,
Between the roll transfer of the chemical solution and the folding and stacking means,
Consisting of a steel roll that has been processed to facilitate the peeling of the continuous sheet on the outer peripheral surface or to suppress wear, and a roll that is coated with silicon rubber on the outer peripheral surface of the steel roll. , Having a press roll that is sandwiched and pressed at a linear pressure of 3.0 to 9.0 kg / cm and stretched by 3 to 20%.
This is a facility for manufacturing household hygiene thin paper. This continuous sheet is obtained by winding up a base paper made of pulp fibers with a predetermined width and rewinding two continuous ply sheets each having a basis weight of 10 to 25 g / m ² per ply from the wound roll. In addition, the chemical solution is continuously applied to each outer surface of the continuous sheet by two rolls transfer so that the content per unit volume of the sheet is 12 to 45 mg / cm ^3, and then wound up again and commercialized in a separate process. Manufacturing equipment for household sanitary thin paper,
Between the roll transfer of the chemical solution and the rewinding process again,
Consisting of a steel roll that has been processed to facilitate the peeling of the continuous sheet on the outer peripheral surface or to suppress wear, and a roll that is coated with silicon rubber on the outer peripheral surface of the steel roll. , Having a press roll that is stretched by 3 to 20% while being sandwiched and pressed at a linear pressure of 3.0 to 9.0 kg / cm,
This is a facility for manufacturing household hygiene thin paper.

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