JP2013146493A - Laminate of sheet of hygienic thin paper, carton, and manufacturing method for laminate of sheet of hygienic thin paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminate of sheets of hygienic thin paper, the laminate being able to be securely reduced in height and able to prevent the height of the laminate from changing according to seasons.SOLUTION: In a laminate of hygienic thin paper, the horizontal tensile strength per pair of sheets of hygienic thin paper when it is dried is expressed by DCDT (N/25 mm), the vertical tensile strength per pair of sheets hygienic thin paper when it is wet is express by WMDT (N/25 mm), and the density of it is expressed by D (g/cm). The laminate is manufactured by folding sheets of hygienic thin paper and subjecting it to a compression process in the direction of lamination with a pull unit. The bulk recovery rate of the laminate, expressed by (the height t of a laminate after the compression process)/(the height tx of the laminate before the compression process) is 80% or less. The compression rate expressed by (pull unit gap G)/(tx) is 30 to 50%. The height H (mm) of the laminate after the compression process is expressed by N×0.1×α×BW≤H≤N×0.11×α×BW relative to the number of sheets (N) of hygienic thin paper and the basis weight per sheet (BW (g/m)).

Description

  The present invention relates to a laminate of sanitary thin paper such as tissue paper, paper towel, and toilet paper, a carton in which the sanitary thin paper is stored in a storage body, and a method of manufacturing a laminate of sanitary thin paper.

Sheet-like sanitary thin paper such as tissue paper, paper towels, and toilet paper is generally folded into a laminated body so that adjacent sheets meet alternately (in a V-fold), and this laminated body is stored in the storage body and cartoned. (Product). A slit is formed on the upper surface of the storage body, and sheets are sequentially taken out one by one in a so-called pop-up manner through the slit and used. The sanitary thin paper stored in this way is required to have a good feel (hand feel), a take-out property of the laminated sheet, and a sufficient strength to withstand use.
By the way, many sanitary thin papers are made from wood pulp, and in order to obtain a hand feel and a soft feel, it is possible to use wood fibers with thin cell walls or blend non-wood pulp such as cotton pulp or synthetic fibers. is there. In addition, a method of incorporating a softening agent is known in order to improve hand feeling reduction due to waste paper pulp while blending waste paper pulp due to raw material circumstances.

On the other hand, in recent years, efforts have been made to reduce the thickness of the storage body without reducing the number of sanitary thin paper sheets (patents) in order to reduce the cost (distribution cost) of carrying around when purchasing carton products. Literatures 1-3). In this case, the laminated body in which the sanitary thin paper is folded is compressed in the laminating direction by a pull unit, and the laminated body is thinned and stored in the storage body.
Moreover, in order to improve the taking-out property of sanitary thin paper, the technique which prescribes | regulates the slit dimension of a container and the sheet | seat intensity | strength of the taking-out direction is disclosed (patent document 4). In any of these techniques, the basis weight of the sanitary thin paper (sheet) is about 10 g / m ² and the height of the storage box (carton) is about 40 to 50 mm.

JP 2001-286414 A JP 2002-249183 A JP 2002-249994 A JP 2002-308352 A

By the way, the technique of the said patent documents 1-4 reduces the basic weight of (1) sheet | seat and reduces the bulk relatively, and also reduces the height of a laminated body, or (2) the basic weight of a sheet | seat. The strength reduction due to the decrease in the amount is prevented by beating the paper strength enhancer or the raw material pulp, or (3) the container (slit) dimension of the polyethylene film provided on the top surface of the storage body is specified. The sheet pick-up resistance is reduced.
However, while maintaining the same basis weight as these technologies, the sheet is compressed without impairing water absorption and softness (while maintaining), and the volume of the sheet, and hence the volume (height) of the laminate, is reduced. Has not been reported.
Further, the compressed laminate may not be sufficiently compressed (maintained) and filled in the storage body, and when the sheet is taken out, the sheet may be broken without being taken out.
Furthermore, even if a laminated body is manufactured under the same folding and compressing conditions, there is a problem that the bulk of the laminated body varies depending on the season (humidity). For example, in the case of a carton product manufactured in the summer, the bulk and the gap (air space) in the box are conspicuous and the contents are not enough, despite storing the same weight and number of laminates as in the winter. There is a risk of raising the suspicion that this is not the case.

  Therefore, the present invention ensures that the height of the laminate of sanitary thin paper is reliably lowered while ensuring good touch, in particular softness, smoothness and sufficient strength, without reducing the basis weight of the sanitary thin paper. An object of the present invention is to provide a sanitary thin paper laminate, a carton, and a method for producing a sanitary thin paper laminate, in which the height variation of the laminate is suppressed.

In order to solve the above-mentioned problem, the laminate of the sanitary thin paper of the present invention is a laminate of sanitary thin paper folded in such a way that the sanitary thin papers of 1 to 4 plies are laminated and alternately assembled, The sanitary thin paper is tissue paper, paper towel or toilet paper, and the transverse tensile strength when dried based on JIS P 8113 is expressed by the following DCDT (N / 25 mm) per set, and when wet based on JIS P 8113 The tensile strength in the longitudinal direction is represented by the following WMDT (N / 25 mm) per set, the density is represented by the following D (g / cm ³ ), and the laminate is formed by folding the sanitary thin paper. The bulk restoration rate is 80 after being manufactured by being compressed by a pull unit in the stacking direction and expressed by (height t of the laminate after compression processing) / (height tx of the laminate before compression processing). % Or less The compression ratio represented by (gap G of the pull unit) / (height tx of the laminate before compression processing) is 30 to 50%, and the laminate after compression processing is designated as JIS P8111. The height H (mm) after maintaining the equilibrium state in the specified atmosphere (23 ± 1 ° C., 50 ± 2% RH) is the number of sanitary thin paper sheets (N) and the basis weight per sheet (BW (g / m ² )), N × 0.1 × α × BW ≦ H ≦ N × 0.11 × α × BW.
However, when the sanitary thin paper is tissue paper, α = 0.08, BW = 9.0-18.0, DCDT = 0.5 or more, WMDT = 0.5 or more, D = 0.15 to 0.22. When the sanitary thin paper is a paper towel, α = 0.06, BW = 15.0-50.0, DCDT = 1.5 or more, WMDT = 3.0 or more, D = 0.25-0.40; When the sanitary thin paper is toilet paper, α = 0.12, BW = 12.0-25.0, DCDT = 0.75 or more, D = 0.15-0.22.

In the carton of the present invention, the laminate of the sanitary thin paper is stored in a storage body, and the storage body is provided with an outlet for the sanitary thin paper.
The method for producing a laminate of sanitary thin paper according to the present invention is a method for producing a laminate of the sanitary thin paper, wherein the sanitary thin paper is laminated and folded so as to be alternately assembled, and then compressed in a laminating direction by a pull unit. In the compression process, a compression ratio represented by (gap of the pull unit) / (height of the laminate before compression process) is set to 30 to 50%, and {(the pull belt operation The tension of the pull unit represented by speed V (m / min) −base paper roll stand speed (m / min)} / (base paper roll stand speed (m / min)) is 2 to 6%.

  According to the present invention, the height of the laminate of the sanitary thin paper is surely reduced while ensuring good touch, in particular softness, smoothness and sufficient strength without reducing the basis weight of the sanitary thin paper, Variations in the height of the laminate due to the season can be suppressed.

It is a figure which shows a multifolder type folding machine (MF machine). It is a figure which shows the aspect which compresses a laminated body by a pull unit.

Embodiments of the present invention will be described below.
The laminated body of sanitary thin paper according to the embodiment of the present invention is formed by forming a set of 1 to 4 ply sanitary thin paper, and laminating these so as to alternately meet. The folding form of the sanitary thin paper is not particularly limited as long as the sanitary thin paper sheets can be sequentially taken out one by one in a so-called pop-up manner, and can be, for example, a known V-fold or Z-fold. Further, folding of the sanitary thin paper can be performed by a multi-folder type folding machine.
A multi-folder type folding machine (MF machine) is known and has a configuration as shown in FIG. In FIG. 1, a plurality of webs 7 that are cut by the product width (normally a plurality of webs are overlapped by a winder) 7 are introduced into each folding machine 50a one by one, and the feeding direction is changed by a guide roll. Then, the web 7 is directed by the guide roll 52 so that the web 7 comes into contact with the web 7, and is finally guided by the folding plate 53 and folded to form a long laminate (bundle) (see FIG. 2). ). One set of laminates of the next folding plate device (not shown) meshes with one set of laminates folded by the folding plate device 50a, and further, the laminate of the next folding plate device meshes with this. In this way, the sheet is continuously folded and laminated one after another on the conveyor 90, and is cut in the longitudinal direction to finally produce a plurality of sets (for example, 200 sets) of pop-up type laminated bodies. Further, the laminate is cut into a product length (sheet length). The cut laminate is called a clip and is boxed into a final product.

The sanitary thin paper is tissue paper, paper towel or toilet paper, and the tensile strength in the transverse direction upon drying based on JIS P 8113 is expressed by the following DCDT (Dry Cross Direction Tensile strength) (N / 25 mm) per set. The tensile strength in the longitudinal direction when wet based on P8113 is expressed by the following WMDT (Wet Machine Direction Tensile strength) (N / 25 mm) per set, and the density is expressed by the following D (g / cm ³ ). . The flow direction of sanitary thin paper is defined as “longitudinal direction” and the direction perpendicular to the flow direction is defined as “lateral direction”.
In addition, the height (H (mm)) of the laminate after compression processing, which will be described later, maintained in an equilibrium state in an atmosphere (23 ± 1 ° C., 50 ± 2% RH) specified in JIS P 8111 is It is expressed as N × 0.1 × α × BW ≦ H ≦ N × 0.11 × α × BW with respect to the number of sheets (N) and the basis weight per sheet (BW (g / m ² )). The equilibrium state is when the difference in the mass of the sample is 0.25% or less of the total mass when measured at intervals of 1 hour or more.
However, when the sanitary thin paper is tissue paper, α = 0.08, BW = 9.0-18.0, DCDT = 0.5 or more, WMDT = 0.5 or more, D = 0.15 to 0.22; When the sanitary thin paper is a paper towel, α = 0.06, BW = 15.0-50.0, DCDT = 1.5 or more, WMDT = 3.0 or more, D = 0.25-0.40; In the case of toilet paper, α = 0.12, BW = 12.0 to 25.0, DCDT = 0.75 or more, and D = 0.15 to 0.22.
If D of the sanitary thin paper is less than the lower limit, the bulk becomes too high, and it becomes difficult to reduce the height of the laminate. On the other hand, when D exceeds the above upper limit value, the processing compression of the laminate is too strong, and the volume feeling of the thin paper is impaired. The purpose of the present invention is to stably reduce the bulk of the sanitary thin paper (and the laminate). Therefore, the increase in the sheet thickness of the sheet at the embossed portion after edge embossing for preventing ply peeling is increased. It is preferable that it is 5% or less of that of the sheet.

In addition, when the sanitary thin paper is a tissue paper, the transverse tensile strength (DCDT) during drying and the longitudinal tensile strength (WMDT) when wet according to JIS 8113 are preferably 0.75 N / 25 mm or more. When the thin paper is a paper towel, DCDT and WMDT are preferably 3.0 N / 25 mm or more. Since paper towels are used harder than tissue paper, higher DCDT and WMDT are required. In general, the tensile strength in the machine direction (DMDT) during drying is 2.5 to 3.5 times the tensile strength in the transverse direction (DCDT) during drying, and this value is the paper machine's papermaking. It depends on the conditions and the raw material composition of the paper.
In addition, with tissue paper and paper towels, DCDT and WMDT are required to be 0.5 N / 25 mm or more, respectively, in order to prevent tissue paper and paper towels from being shaken when taken out from the storage body with wet hands.

The thickness of the sanitary thin paper is preferably 50 to 120 μm for tissue paper, for example.
The paper thickness is measured using a thickness gauge (for example, a dial thickness gauge “PEACOCK” manufactured by Ozaki Mfg. Co., Ltd.) under the conditions of JIS P8111. The measurement conditions were a measurement load of 250 gf and a probe diameter of 30 mm. A sanitary thin paper sample was placed between the probe and the measurement table, and the gauge when the probe was slowly lowered was read. At this time, it is only necessary to place a measuring element. One measurement is performed by stacking 5 sets of sanitary thin paper samples (for example, a total of 10 sheets for 2 plies), and the measurement is repeated 10 times to average the measurement results. Then, the average value obtained per time is divided by the number of sheets to obtain the paper thickness per sheet.

In order to impart softness and paper bulk to the sanitary thin paper, it is preferable to crepe the sanitary thin paper. The crepe rate is preferably 10 to 20% in the case of tissue paper, 15 to 25% in the case of paper towel, and 25 to 35% in the case of toilet paper.
Here, the creping process is a known method in which paper is mechanically compressed in the longitudinal direction (machine traveling direction) to form a wavy wrinkle called crepe. Gives water absorbency, surface smoothness, aesthetics (crepe shape) and the like. For example, when making sanitary thin paper, a crepe is formed by a creping doctor due to the speed difference between the Yankee dryer and the reel (the reel speed is slower than the Yankee dryer). Although the crepe characteristics depend on the speed difference, if the basis weight of the base paper on the Yankee dryer is 7 to 40 g / m ² , the basis weight on the reel is approximately 9 to 50 g / m ² . The basis weight above 8 is greater.
The crepe rate based on the speed difference between the Yankee dryer and the reel is defined by the following equation.
Crepe rate (%) = 100 x (Yankee dryer speed (m / min)-reel speed (m / min)) ÷ reel speed (m / min)
Further, the longitudinal elongation rate of sanitary thin paper has a positive correlation with the crepe rate. In the present invention, the longitudinal elongation rate is 10 ± 3% for tissue paper and 15 ± 5% for paper towels. In the case of toilet paper, it should be 20 ± 5%. The elongation before processing, that is, the elongation of the base paper at the time of papermaking is 15 ± 3% in the case of tissue paper, 20 ± 5% in the case of paper towel, and 25 ± 5% in the case of toilet paper.
The elongation rate is the percentage of elongation of the test piece up to breakage expressed in%.

The sanitary thin paper may be made of 100% wood pulp, and may include waste paper pulp and non-wood pulp. For example, in the case of tissue paper and toilet paper, NBKP: LBKP = 10: 90 to 70:30 (mass ratio) wood pulp may be used as a raw material, or waste paper pulp is 50% by mass with respect to the wood pulp of this pulp ratio. Can be included to the extent. Waste paper pulp has a large variation in quality, and as the blending ratio increases, the quality of the product, particularly the softness, is greatly affected. Therefore, it is desirable to blend 20% by mass or less with respect to the wood pulp. In the case of a paper towel, the softness requirement is lower than that of tissue paper and toilet paper, and 100% used paper pulp may be used as a raw material.
The sanitary thin paper can be produced by a conventional method. Further, the paper flow speed / wire speed (J / W ratio) can be 0.92-1.00 based on a known technique. Toilet paper does not use a wet paper strength enhancer, but tissue paper and paper towels generally use a polyamine / polyamide epichlorohydrin wet paper strength enhancer.

Next, the compression processing of the laminated body, which is a characteristic part of the present invention, will be described with reference to FIG. As shown in FIG. 2, when a laminate bundle (this is represented by a laminate 2x before compression processing) folded so that sanitary thin papers are alternately assembled is inserted into a pull unit (pull belt) 100, the laminate is laminated. The body 2x is compressed in the stacking direction while being introduced into the upper and lower gaps G of the pull unit 100, and is unloaded from the pull unit 100 to obtain a compressed stack bundle. This is cut to the length of the product by a cut-off saw, and a laminate (clip) 2 is obtained. Here, since the bulk of the laminated body 2 that has been subjected to the compression process is slightly restored by the springback, G <t <tx (the unit is all for the height tx of the laminated body 2x and the height t of the laminated body 2). mm).
In the pull unit 100, a plurality of sets of rolls are arranged at the top and bottom, belts such as rubber belts are stretched around the upper and lower roll sets, and the upper and lower belts travel at a speed V by rotating the rolls. The workpiece is conveyed and compressed during that time.

In the present invention, the bulk recovery rate (t / tx) is 80% or less, and the compression rate (G / tx) is 30 to 50%. In the conventional compression processing of the laminate, the degree of compression is weak and easy to recover, and the bulk recovery rate is about 90%. However, the tension is applied by the pull unit for a certain time or more (preferably 0.28). By performing compression processing for more than a second, the bulk of the laminate can be stably lowered after aging (bulk recovery rate is less than 80%) without affecting the quality of the sanitary thin paper.
When the compression rate exceeds 50%, the bulk restoration rate exceeds 80% and the laminate becomes bulky, and it is difficult to reduce the thickness of the storage body that stores the laminate. On the other hand, if the compression ratio is less than 30%, the compression becomes excessive, and the outermost sanitary surface of the laminate is caused by the tension of the pull belt that is applied to the outermost sanitary thin paper during compression processing and the slight speed difference inside the laminate. Tissue paper may be torn.
Moreover, it is preferable that the tension | tensile_strength added to the horizontal direction of a laminated body at the time of a compression process is 2.0 to 6.0%. If the tension is less than 2.0%, compression processing may be insufficient and the bulk recovery rate may exceed 80%. If the tension exceeds 6.0%, the outermost sanitary thin paper of the laminate may be broken and the tensile strength (MDT and CDT) of the sanitary thin paper may be reduced.
The tension is represented by {(pull unit operation speed V (m / min) −base paper roll stand speed (m / min))} ÷ (base paper roll stand speed (m / min)). Here, the base paper roll stand speed is the speed of the base paper supplied to the folding plate (in the vicinity of the position where the base paper is unwound from the roll stand).

By compressing the laminated body as described above, the height (bulk) of the laminated body can be reduced compared to the conventional one, and the fluctuation of the height of the laminated body due to the season (humidity) can be suppressed. it can.
For example, in the case of a tissue paper having a basis weight BW = 11.0 g / m ² and 400 sheets per sheet, in the present invention, the formula: N × 0.1 × α × BW ≦ H ≦ N × 0. By 11 × α × BW, the height of the laminated body can be reduced to 35.2 to 38.7 mm. On the other hand, in the case of the technique described in Patent Document 3 described above, the height of the storage box is 50 ± 2 mm, and the height of the laminated body inside thereof is 0 to 5 mm lower than the height of the storage box. Even if it is the same basis weight and number of sheets, it is higher than the laminate of the present invention.
In the present invention, by defining the compression ratio and the tension as described above, H≈t (the height of the laminated body after the spring bag is almost constant regardless of the change in humidity), and the storage humidity of the base paper roll ( Regardless of whether it is a hot and humid summer or a low-humidity winter, the bulk recovery rate is kept constant when folded and compressed. On the other hand, if the compression ratio and the tension are out of the above ranges, the compression processing is excessively performed in the summer compared to the winter, and the bulk of the laminate is reduced.

  In the carton of the present invention, the above-described laminate is stored in a storage body, and the storage body is provided with a sanitary thin paper take-out port. The container can usually be a paper box or a polyethylene pack (bag). When the container is a paper box, the take-out port is provided on the top surface of the box, and a polyethylene film with a slit in the center in the width direction along the longitudinal direction is adhered to the inside of the take-out port by an adhesive. ing. When the container is a polyethylene pack, a film having a thickness of 20 to 50 μm is used. If the film thickness is 25 μm or more in a polyethylene pack, the moldability and strength are ensured to some extent, so that it can be used as it is simply by providing a slit as a take-out opening on the top surface of the pack. When the film thickness is less than 25 μm, the pack is easily broken, so it is used for a refill container or the like. In the polyethylene pack, the preferred slit length is preferably 70% or more of the length of the top surface of the pack (the length in the same direction as the slit) from the viewpoint of preventing breakage.

  It goes without saying that the present invention is not limited to the above-described embodiments, and extends to various modifications and equivalents included in the spirit and scope of the present invention.

The sanitary thin paper shown in Table 1 (tissue paper, paper towel and toilet paper, respectively) was prepared. In addition, the pulp composition (mass%) of each sanitary thin paper is 30% NBKP and 70% LBKP for tissue paper, and 20% NBKP, 40% LBKP, and 40% waste milk carton pulp for paper towels. Toilet paper is NBKP 20% and LBKP 80%.
Next, using the MF machine shown in FIG. 1, the number of pairs of laminates shown in Table 1 was manufactured, and the height tx was measured. The folding method was V-folding.
Next, the laminate bundle was compressed using the pull unit shown in FIG. Table 1 shows the compression processing of the pull unit.
Furthermore, the laminated body after compression processing was cut into a predetermined length with a knife, and the height t was measured immediately. Furthermore, the laminate was held under the temperature and humidity conditions specified in JIS-P8111, and the clip height (H) of the laminate after springback was measured.
In addition, the intensity | strength of Table 1 was measured based on JISP8113, and basic weight was measured based on JISP8124. The elongation percentage was expressed as% of the elongation of the test piece up to the break. As described above, the paper thickness was measured using a thickness gauge (a dial thickness gauge “PEACOCK” manufactured by Ozaki Seisakusho) under the conditions of JIS P8111. The measurement conditions are also as described above. The basis weight BW, tensile strength (DCDT and WMDT) and density D of the sanitary thin paper were measured under the temperature and humidity conditions specified in JIS-P8111.

The obtained results are shown in Table 1. In Table 1, the pull unit nip distance is the length to which the nip pressure indicated by L in FIG. 2 is applied, and the pressure retention time is the time for which the nip pressure is applied to the pull unit. The machine CAL is a calendar process applied by a paper machine, and the winder CAL is a calendar process applied by a winder unit.
Note that the pressure retention time (seconds) = pull unit nip distance (L (m)) ÷ operation speed (m / min) × 60 (seconds).

  As is apparent from Table 1, in the case of each example in which the laminate was compressed by applying a tension of 2.0 to 6.0% with a compression ratio of 30 to 50% by a pull unit, sanitary thin paper MDT, CDT , The density D can be maintained within a predetermined range, and the bulk recovery rate of the laminate can be made less than 80% without affecting the quality, and the height (H) of the laminate can be set to N × 0.1 × α ×. The range of BW ≦ H ≦ N × 0.11 × α × BW could be achieved.

On the other hand, in the case of Comparative Example 1 in which the tension when compressing the laminate exceeded 6.0%, the outermost sanitary thin paper of the laminate was torn and the strength was slightly reduced.
In the case of Comparative Example 2 in which the compression ratio when compressing the laminate was less than 30%, the compression was excessive, and wrinkles occurred on the outermost sanitary thin paper of the laminate during the compression processing.
In the case of Comparative Examples 3 and 4 in which the compression ratio when compressing the laminated body exceeded 50%, the bulk recovery rate exceeded 80%, the laminated body became bulky, and the thickness of the storage body for storing the laminated body It became difficult to reduce the thickness. That is, the height (H) of the laminate exceeded N × 0.11 × α × BW.

2x Laminated body before compression processing 2 Laminated body after compression processing 100 Pull unit

Claims (3)

It is a laminate of sanitary thin papers that are laminated so as to be alternately assembled by laminating sanitary thin papers having 1 to 4 plies as a set,
The sanitary thin paper is tissue paper, paper towel or toilet paper, and the transverse tensile strength when dried based on JIS P 8113 is expressed by the following DCDT (N / 25 mm) per set, and when wet based on JIS P 8113 The tensile strength in the longitudinal direction is represented by the following WMDT (N / 25 mm) per set, and the density is represented by the following D (g / cm ³ ),
The laminate is manufactured by folding the sanitary thin paper and then compressing the laminate in the stacking direction by a pull unit, (height t of the laminate after compression processing) / (height of the laminate before compression processing). The bulk recovery rate represented by (tx) is 80% or less,
The compression rate represented by (gap G of the pull unit) / (height tx of the laminate before compression processing) is 30 to 50%,
The height H (mm) after maintaining the compressed laminate in an equilibrium state in an atmosphere (23 ± 1 ° C., 50 ± 2% RH) specified in JIS P 8111 is the number of sanitary thin paper sheets (N). And a basis weight per sheet (BW (g / m ² )), a laminate of sanitary thin paper represented by N × 0.1 × α × BW ≦ H ≦ N × 0.11 × α × BW .
However, when the sanitary thin paper is tissue paper, α = 0.08, BW = 9.0-18.0, DCDT = 0.5 or more, WMDT = 0.5 or more, D = 0.15 to 0.22. When the sanitary thin paper is a paper towel, α = 0.06, BW = 15.0-50.0, DCDT = 1.5 or more, WMDT = 3.0 or more, D = 0.25-0.40; When the sanitary thin paper is toilet paper, α = 0.12, BW = 12.0-25.0, DCDT = 0.75 or more, D = 0.15-0.22. A carton in which the laminate of sanitary thin paper according to claim 1 is stored in a storage body, and an outlet for the sanitary thin paper is provided in the storage body. A method for producing a laminate of sanitary thin paper according to claim 1,
The sanitary thin paper is laminated and folded so as to be alternately assembled, and then compressed in the stacking direction by a pull unit. In the compression processing, (gap of the pull unit) / (the laminate before compression processing) The compression ratio represented by the height of the sheet is 30 to 50%, and {(pull belt operation speed V (m / min) −base paper roll stand speed (m / min)} / (base paper roll stand speed (m / Min), a method for producing a laminate of sanitary thin paper, wherein the tension of the pull unit represented by 2 / min is 2 to 6%.

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