CN107979982A

CN107979982A - roll toilet paper

Info

Publication number: CN107979982A
Application number: CN201780000976.0A
Authority: CN
Inventors: 大罔康伸; 大篭幸治
Original assignee: Japanese Paper Kakuhi Co Ltd
Current assignee: Japanese Paper Kakuhi Co Ltd; Nippon Paper Crecia Co Ltd
Priority date: 2016-09-23
Filing date: 2017-01-31
Publication date: 2018-05-01
Anticipated expiration: 2037-01-31
Also published as: WO2018055785A1; JP6186482B1; KR101845210B1; CN107979982B; JP2018047133A

Abstract

The present invention provides in the case where not reducing level ground amount the flexibility of ply of paper and volume it is good, and every volume 1 of volume length lengthens, and promotion effect increases, excellent roll toilet paper in terms of save space when carrying amount, keeping.The roll toilet paper of the present invention is the roll toilet paper 1 that the toilet paper for being laminated with 2 layers has been coiled into web-like, wherein, above-mentioned toilet paper is set with embossed pattern, a length of more than 63m below the 105m of volume, the coil diameter for making roll toilet paper 1 are more than 105mm below 140mm, winding density 1.1m/cm²Above 2.0m/cm²Below, volume density 0.17g/cm³Above 0.32g/cm³Below.

Description

Roll toilet paper

Technical field

The present invention relates to the roll toilet paper for having batched the toilet paper for being laminated with 2 layers.

Background technology

Roll toilet paper commercially sells the product mainly packed in units of volume 4, volume 12 etc..These package bodies by It is big in volume, therefore when buying, carrying amount is restricted, and once be can purchase amount nature and is restricted.In addition, in family, duty When field, communal facility are taken care of in, storage space is restricted, therefore the amount that can be taken care of is also restrained.

Based on the above situation, develop and the level ground amount of each scraps of paper layer of toilet paper is reduced to 14g/m²Hereinafter, volume is increased Long roll toilet paper (patent document 1,2).

In addition, applicant has developed the level ground amount of every toilet paper is higher than 13g/m², feel, use feeling have carried Height, and increase the long roll toilet paper (patent document 3) of volume.

Conventional art document

【Patent document】

【Patent document 1】Japanese Unexamined Patent Publication 2006-087703 publications

【Patent document 2】Japanese Unexamined Patent Publication 2013-208297 publications

【Patent document 3】Japanese Unexamined Patent Publication 2014-188342 publications

The content of the invention

The subject that the invention solves

But if reducing the level ground amount of paper, use feeling, volume size also reduce while intensity declines.On the other hand, In order to make up these undesirable raising sheet products, and weaken press polish processing, then occur that smooth feeling is deteriorated, coil diameter becomes Greatly, the problem of being difficult to retract onto toilet paper dispenser.

In addition, in the invention that patent document 3 is recorded, while the level ground amount of toilet paper is improved, improve feel, it is ensured that The flexibility of ply of paper, but do not inquired into for the flexibility of volume.Here, the flexibility of volume refers to hold volume in shop Sense of touch during cylinder toilet paper, the flexibility without directly reflecting ply of paper.This is because although roll toilet paper in use, The flexibility of ply of paper is important, still, can not possibly be dismantled volume in shop to confirm the flexibility of ply of paper.Accordingly, there exist such as Lower problem, if volume is hard, then even if ply of paper itself is soft, ply of paper also can be considered hard, as a result will not promote Into purchase.

Thus, it is an object of the present invention to by making the flexibility of ply of paper and volume good in the case where not reducing level ground and measuring, And every volume 1 of volume length is lengthened, the promotion effect based on improved flexibility is improved so as to provide, and in carrying amount, keeping When save space in terms of also excellent roll toilet paper.

Solve the technological means of problem

The present inventor has carried out conscientious research in view of the above subject.It turns out that for 2 layers of health will be laminated with For paper roll takes into the roll toilet paper of web-like, by setting above-mentioned toilet paper with embossed pattern, by above-mentioned roll toilet paper Volume length, coil diameter, winding density (Japanese：Roll up I density) and volume density (Japanese：ロー Le density) adjust to defined value, It can solve the above subject.Specifically, the present invention provides following technical scheme.

(1) roll toilet paper of first embodiment of the invention is that the toilet paper for being laminated with 2 layers has been coiled into web-like Roll toilet paper, wherein, above-mentioned toilet paper is set with embossed pattern, makes a length of more than the 63m of volume of above-mentioned roll toilet paper Below 105m, coil diameter are more than 105mm below 140mm, winding density 1.1m/cm²Above 2.0m/cm²Below, volume density For 0.17g/cm³Above 0.32g/cm³Below.

(2) roll toilet paper according to above-mentioned (1), wherein, the depth of above-mentioned embossed pattern can also be 0.01mm Below above 0.40mm.

(3) roll toilet paper according to above-mentioned (1) or (2), wherein, above-mentioned embossed pattern can also be that single embossing is schemed Case.

(4) roll toilet paper according to any one of above-mentioned (1) to (3), wherein, above-mentioned toilet paper can also contain The sulfate pulp of below 100 mass % of more than 40 mass %.

(5) roll toilet paper according to any one of above-mentioned (1) to (4), wherein, above-mentioned toilet paper can also contain The old paper stock from milk carton of below 60 mass % of more than 0 mass %.

(6) roll toilet paper according to any one of above-mentioned (1) to (5), wherein, by CIE (international lighting committee members Meeting) as defined in the whiteness UV-in that according to ISO 2470 obtains of illuminant-C when being irradiated to the face side of above-mentioned toilet paper with, every When the filter of the ultraviolet light of below wavelength 420nm masking and above-mentioned illuminant-C being irradiated to the face side of above-mentioned toilet paper The difference Δ of the whiteness UV-cut obtained according to ISO 2470 can also be less than 2.5 more than 0.0.

Invention effect

According to the present invention, by being set on toilet paper with embossed pattern, so that situation about being measured on the level ground for not reducing toilet paper Under make the flexibility of toilet paper good.In addition, by by volume length, coil diameter, winding density and the volume density tune of roll toilet paper It is whole to be worth to defined, obtain the roll toilet paper that per a roll of long lengthening of volume and flexibility is excellent.Therefore, can be carried The high promotion effect based on improved flexibility, and also excellent reel is defended in terms of the save space in carrying amount, keeping Raw paper.

The simple declaration of attached drawing

【Fig. 1】The stereogram of the appearance for the roll toilet paper that display first embodiment of the invention is related to.

【Fig. 2】The diagram of the shooting image of the embossed pattern of display volume face side.

【Fig. 3】Display is arranged at the sectional view of the embossed pattern at volume surface and the back side.

【Fig. 4】Show the figure of the assay method of the depth of embossed pattern.

【Fig. 5】Show the figure of the assay method of the depth of embossed pattern.

【Fig. 6】Show the figure of the assay method of the depth of embossed pattern.

【Fig. 7】Show the figure of the assay method of the depth of embossed pattern.

【Fig. 8】Show up- coiler (Japanese：マシ Application ワインダー) an example figure.

【Fig. 9】Display roller batches processing machine (Japanese：ロー Le batches り Jia Gong Machine) an example figure.

Embodiments of the present invention

Be described in detail below for embodiments of the present invention, due to these contents merely to example and record , therefore the present invention is not limited to this.

[roll toilet paper]

As shown in Figure 1, the roll toilet paper 1 involved by embodiment of the present invention 1 is to be laminated with 2 layers of toilet paper and by health Paper has coiled into the roll toilet paper of web-like.

＞＜ volumes long

The a roll of volume length of the roll toilet paper 1 of the present invention, i.e., the overall length after roll toilet paper 1 is unfolded is more than 63m Below 105m, is preferably more than 68m below 95m, more preferably more than 73m below 85m.It will be wound in above-mentioned number range long The volume of degree, is cut to Rack, and the roll toilet paper 1 of volume 1 is made.

＜ coil diameters ＞

As shown in Figure 1, the coil diameter DR of roll toilet paper 1 of the present invention is more than 105mm below 140mm, it is preferably 110mm Below above 132mm, more preferably more than 115mm below 123mm.

＜ winding densities ＞

The winding density of roll toilet paper 1 is represented with (the volume length × number of plies) ÷ (sectional area of volume).The sectional area of volume is used { sectional area of outside diameter (coil diameter DR) part of volume }-(sectional area of SMIC outer radius portion) represents.

Here, SMIC is the core of roll toilet paper, SMIC outside diameter is the diameter of the centre bore of volume.

The winding density of roll toilet paper 1 of the present invention is 1.1m/cm²Above 2.0m/cm²Hereinafter, it is preferably 1.2m/cm²With Upper 1.8m/cm²Hereinafter, it is more preferably 1.5m/cm²Above 1.7m/cm²Below.

＜ volume densities ＞

The volume density of roll toilet paper 1 of the present invention is represented with (the volume quality for being free of SMIC) ÷ (scroll product).Roll up quality It is the quality for being converted into roll toilet paper when each winding W is 114mm.Scroll product is with [{ outside diameter (coil diameter) part of volume Sectional area }-(sectional area of SMIC outer radius portion)] × winding (being converted into every 114mm) represents.For example, per winding 114mm Volume quality be 131g, the outside diameter of coil diameter 117mm, SMIC is when being 39mm, volume density=131g ÷ [{ 3.14 × (117mm ÷ 2 ÷10)²- 3.14 × (2 ÷ 10 of 39mm ÷)²} × (114mm ÷ 10)]=0.12g/cm³.In addition, in roll toilet paper without in During core, using the diameter of centre bore as SMIC outside diameter.

The volume density of the roll toilet paper 1 of the present invention is 0.17g/cm³Above 0.32g/cm³Hereinafter, it is preferably 0.20g/ cm³Above 0.29g/cm³Hereinafter, it is more preferably 0.22g/cm³Above 0.27g/cm³Below.

In the roll toilet paper 1 of the present invention, by the way that volume length is arranged in above-mentioned number range with coil diameter, so as to obtain Make save space when carrying amount and keeping good and to the installation of toilet paper dispenser also good roll toilet paper 1.Separately Outside, in roll toilet paper 1 of the invention, by the way that winding density and volume density are arranged in above-mentioned number range, so as to obtain The flexibility of volume is good and the also good roll toilet paper 1 of the adhesion between SMIC and volume.Therefore, by the way that long, volume will be rolled up Diameter, winding density and volume density are arranged in above-mentioned number range, can be improved the promotion based on improved flexibility Effect, and also excellent roll toilet paper 1 in terms of the save space in carrying amount, keeping.

＜ volumes of quality ＞

The volume quality of roll toilet paper 1 of the present invention is the volume quality without SMIC (core) that every winding W is 114mm.When When winding W is not 114mm, W is converted into 114mm and seeks volume quality again.For example, when winding W is 105mm, is rolled up quality and multiplied Volume quality during using the quality after coefficient (114/105) as W as 114mm.

Volume quality preferred more than 200g below 400g, more preferably more than 230g below the 350g of roll toilet paper 1 of the present invention, Still more preferably from more than 250g below 330g.In roll toilet paper 1 of the present invention, by the way that volume quality is also disposed at above-mentioned numerical value model In enclosing, so that the volume for obtaining every volume 1 is long, coil diameter and quality also good roll toilet paper 1.

＜ SMIC outside diameters ＞

The outside diameter of SMIC of the roll toilet paper 1 of the present invention is preferably more than 25mm below 48mm, more preferably 35mm with Upper below 46mm, still more preferably from more than 37mm below 43mm.In the roll toilet paper 1 of the present invention, by by SMIC outside diameter It is arranged in above-mentioned number range, the treatability of roll toilet paper when can obtain installation and the manufacture to toilet paper dispenser is good Good roll toilet paper 1.In addition, the quality of the SMIC of roll toilet paper 1 is preferably more than 3.0g below 5.7g, more preferably More than 3.7g below 5.2g, still more preferably from more than 4.2g below 4.8g.By by SMIC quality settings in above-mentioned number range It is interior, the price for the intensity of the SMIC and SMIC being adapted with the such strip toilet paper of the application can be made good.The matter of SMIC Amount is same with volume quality, is scaled the quality of 114mm windings.

＜ volumes of flexibility ＞

When evaluating the flexibility for the roll toilet paper 1 that volume is longer as the application, preferably by evaluating following institute The volume flexibility stated, to evaluate flexibility during hand-held volume.

The volume flexibility of roll toilet paper 1 is (to add the convenient compression of rattan science and technology Co. Ltd. system to try using compression test Test machine KES-G5), it is carried out as follows measure.In addition, it regard the direction parallel with the axle center of roll toilet paper 1 as height side To, using the perpendicular direction of the tangent line of the circumference with roll toilet paper 1 as radial direction.

First, in the SMIC of roll toilet paper 1, it is inserted into propylene acid tube (acrylic pipe).The meat of propylene acid tube is thick For 2mm.The length of propylene acid tube it is longer 10mm than the winding of roll toilet paper 1 (when the winding of roll toilet paper 1 is 114mm, propylene The length of acid tube is 124mm).The outside diameter of propylene acid tube is arranged to following size, i.e. in the SMIC than roll toilet paper 1 Footpath is smaller, and when after being inserted into propylene acid tube by the axle center of roll toilet paper 1 into when placing in a manner of vertical, roll toilet paper is not It can be moved because of dead weight.When being difficult to propylene acid tube being inserted into SMIC, and the outside diameter of propylene acid tube somewhat being reduced, also may be used Meat thickness to be thinned slightly with waterproof abrasive paper.When the length of propylene acid tube is 125mm, outside diameter is 38mm, the matter of propylene acid tube Measure as 31g or so.

Then, roll toilet paper 1 is horizontally placed in rigid table in a manner of axle center is into level.Then, in roll toilet paper 1 The central part of short transverse, by pressing piece (the area 2.0cm of above-mentioned KES-G5²) using speed it is the condition of 10mm/ point from radius The top press-in in direction.It is 5gf/cm by the pressure that pressing piece presses writing that surpasses all the others²When compression distance as T0, pressure 150gf/cm² When compression distance as Tm, then (Tm-T0) represents volume flexibility.Measure carries out 5 times, and measurement result is averaged.It is in addition, right For short transverse when above-mentioned pressing piece is pressed into roll toilet paper 1, the both ends of short transverse are removed, can also It is not the central part of short transverse.In the measure of the volume flexibility of the roll toilet paper 1 of the present invention, in roll toilet paper 1 Centre between the central part of short transverse and end is nearby pressed into above-mentioned pressing piece to be measured.

The volume flexibility of roll toilet paper 1 of the present invention is preferably more than 0.4mm below 1.9mm, more preferably 0.5mm with Upper below 1.6mm, still more preferably from more than 0.6mm below 1.2mm.

[toilet paper]

Toilet paper in the roll toilet paper 1 of the present invention can be made of the wood pulp of 100 mass %, can also contain waste paper Paper pulp, non-wood pulp, Deinking Pulp.The containing ratio of target quality in order to obtain, preferably NBKP (bleached sulphate softwood pulp) is 0 matter Below 30 mass % of more than %, more preferably below 20 mass % of more than 0 mass % are measured, still more preferably from more than 5 mass % 15 Below quality %.In addition, the containing ratio of LBKP (bleached sulphate hardwood pulp) be preferably more than 30 mass % 90 mass % with Under, more preferably below 80 mass % of more than 40 mass %, still more preferably from below 70 mass % of more than 50 mass %.

In addition, the containing ratio of the old paper stock from milk carton (milk carton) (milk box (milk pack)) is preferably Below 60 mass % of more than 0 mass %, more preferably below 50 mass % of more than 10 mass %, still more preferably from 20 mass % with Upper below 40 mass %.In addition, the containing ratio of sulfate pulp is preferably more than 40 mass % below 100 mass %, more preferably For below 90 mass % of more than 50 mass %, still more preferably from below 80 mass % of more than 60 mass %.

In addition, main body is softwood pulp in the old paper stock from milk carton (milk box), it, which has, is easily guaranteed that toilet paper The advantages of intensity, however, the deviation of quality is big, if the excessive quality that can influence product of content ratio, it is therefore preferable that above-mentioned Containing ratio in number range.

As the material category of above-mentioned LBKP, preferably from alpine ash (Eucalyptus grandis) and blue gum (Eucalyptus globulus) is that the Myrtaceae eucalyptus of representative belongs to the slurry of manufacture.

In addition, relative to the NBKP, LBKP, 100 mass parts of old paper stock from milk carton, 25 mass parts can be combined with The following Deinking Pulp from newspaper, waste magazine paper etc..When being combined with 25 mass parts of Deinking Pulp, in toilet paper (scraps of paper layer) The containing ratio of Deinking Pulp is 25 mass parts/(+25 mass parts of 100 mass parts) × 100=20 mass %.The containing ratio of Deinking Pulp is excellent Elect as more than 0 mass % below 20 mass %, more preferably below 10 mass % of more than 0 mass %, still more preferably from 0 mass % Below 5 mass % of the above, particularly preferably 0 mass %.Due to Deinking Pulp and old paper stock, quality deviation can be caused Greatly.In addition, Deinking Pulp usually contains fluorescent dye, therefore such as content increasing of its containing ratio more than 20 mass %, then fluorescent dye It is more, it is not suitable for.

In addition, in order to ensure the appropriate intensity of toilet paper, raw material can be coordinated with usual way, utilize pulp fiber Beating processing carries out intensity adjustment.As the beating of target quality in order to obtain, for commercially available magma, preferably reduce and use The Canadian Standard Freeness of JIS-P8121 measure, the preferably difference of the Canadian Standard Freeness before and after beating is more than 0mL Below 150mL, more preferably more than 10mL below 100mL, still more preferably from more than 20mL below 70mL.

For toilet paper, when using primary system's raw material in paper stock, can have one with specific range fit Determine the fiber length of scope and the kp softwood pulp and sulfate hardwood pulp of fibre coarseness, carry out copy paper.As to paper stock Additive, can be according to the quality requirements of end article, and use containing the softening agent of dispergation (Debonder) softening agent, increase-volume Agent, dyestuff, dispersant, dry paper reinforcing agent, drainage enhancer, pitch control agent (pitch-controlling agent), Absorbability enhancer etc..Additionally, it is preferred that without using moistening paper strengthening agent.

In addition, the situation of wastepaper as raw material is used as toilet paper, also with carrying out same processing using the situation of primary system.

＜ embossed patterns ＞

It is preferred that the 1st layer and the 2nd layer in the toilet paper of roll toilet paper 1 of the present invention sets with embossed pattern, it is preferably single pressure Floral pattern 2.In addition, embossed pattern is the concaveconvex shape formed using embossing processing.

Fig. 2 represents the bat of the recess 2R of the embossed pattern of single embossed pattern 2 of the face side of toilet paper in roll toilet paper 1 Take the photograph image.Moreover, it relates to roll toilet paper 1 in, the face side of toilet paper refers to the outside for forming roll toilet paper 1 Face, the rear side of toilet paper refers to the face for forming the inner side of the paper tube side as roll toilet paper 1.

When applying double embossed patterns to replace single embossed pattern 2, each scraps of paper layer of face side and rear side to toilet paper After applying embossing processing respectively, the convex surface of the embossed pattern of each scraps of paper layer is placed in inner side add layer and be laminated 2 layers, therefore It sometimes appear that the thickness of paper of toilet paper is blocked up, winding density is lower, it is difficult to ensures the long situation of volume.In addition, even if double embossing figures The situation of case, if mitigating the depth of embossed pattern, though thickness of paper is thinning, it sometimes appear that what the flexibility of scraps of paper layer was deteriorated Situation.Therefore, by applying single embossed pattern 2, the promotion effect based on improved flexibility can be improved, and removing Also roll toilet paper 1 excellent in terms of save space when freight volume, keeping.In the case of for double embossed patterns, when 2 layers of stacking When, using layer adhesive glue (paste), or use annular knurl (edge embossed).But single embossed pattern 2 is due to that need not use layer to bond Glue or annular knurl, it is possible to 2 layers are laminated, therefore preferably.

(depth of embossed pattern)

Fig. 3 is the sectional view for showing the single embossed pattern 2 set in roll toilet paper 1 in the toilet paper for being laminated with 2 layers.Figure 3 top corresponds to volume face side, and Fig. 3 (a) is the situation of the depth D depths of embossed pattern, and Fig. 3 (b) is the depth D of embossed pattern Shallow situation.In addition, the thickness of paper t2 (non-embossed of the face side of thickness of paper reflection toilet paper of the toilet paper after embossing processing The distance between portion and convex portion 2P of the embossed pattern of rear side) it is identical.Although the thickness of paper t2 of toilet paper is identical, with pressure The scraps of paper layer that the mode that the depth D of floral pattern deepens is imposed in Fig. 3 (a) sides of embossed pattern is soft, excellent touch.People recognize For this is because in the significant Fig. 3 (a) of the bumps of embossed pattern, (density drops for volume increase for the thickness of paper of body paper It is low), it is easily deformed, the reason for flexibility of scraps of paper layer increases.In addition, if the face side of toilet paper is not provided with embossing figure Case, and by its it is smooth formed, then can be excessively smooth and feel that surface is very hard, the flexibility deterioration of scraps of paper layer.

Here, in the roll toilet paper 1 of the present invention, the depth D of the embossed pattern of single embossed pattern 2 of toilet paper is preferably More than 0.01mm below 0.40mm, more preferably more than 0.04mm below 0.35mm, still more preferably from more than 0.09mm 0.30mm Below.

By the way that the depth D of the embossed pattern of the toilet paper in the roll toilet paper 1 of the present invention is arranged on above-mentioned numerical value model In enclosing, volume size can be manufactured and density size is good and the roll toilet paper 1 of excellent flexibility.

In addition, for toilet paper, such as in the easily face side setting of attached water when using warm water washing toilet seat The recess 2R of embossed pattern, then since the feel of recess 2R is more preferable than convex portion 2P, the flexibility of scraps of paper layer increases.

The depth D of the embossed pattern of toilet paper in the roll toilet paper 1 of the present invention is schemed using measurement microscope embossing The difference of height of case and try to achieve.

As microscope, entitled " the single focusing 3D measuring microscopes VR- of product of KEYENCE company systems can be used 3100 " microscope.As the Observe and measure image analysis software of microscopical image, product can be used entitled The software of " VR-H1A ".In addition, it is 12 times of multiplying power, is measured under conditions of field area 24mm × 18mm in determination condition. In addition, measure multiplying power and field area can suitably be changed according to the size of required embossed pattern.

First, the most long portion a of the edge fr of embossed pattern as shown in Figure 4 is obtained.Fig. 5 (a), which is shown, utilizes microscope institute The height map on X-Y plane obtained, the height on toilet paper surface are represented with deep or light.The dark position of Fig. 5 (a) represents each Embossed pattern, the most long portion a of an embossed pattern can be identified from Fig. 5 (a).As standardized bar crosses the line A- of the most long portion a B, then as shown in Fig. 5 (b), obtain height (measure cross section curve) figure of embossed pattern.Here, the face by X-Y plane image Color it is deep or light, it is known that the convex portion (non-embossed portion) of embossed pattern and recess, therefore, abutted with crossing convex portion with recess Partial mode determines line A-B.

Here, concavo-convex (measure) cross section curve of the height map of Fig. 5 (b) for the sample surface of the actual toilet paper of expression T, still, (contains fiber block, or fiber extends into beard shape, or by not having due to also containing noise in the surface of toilet paper Have precipitous peak caused by the part of fiber), therefore, when calculating concavo-convex difference of height, it is necessary to remove such noise peak.

Here, as shown in fig. 6, calculate " wheel Guo curve " U from the cross section curve T of height map, obtain in wheel Guo's curve U 2 the flex points P1 and P2 to raise up, then the minimum value folded by flex point P1 and P2 is obtained, in this, as the minimum M in of depth. Maximum Max using the average value of the value of the depth of flex point P1, P2 as depth again.

In this way, the depth D=maximum Max- minimum Ms in of embossed pattern.In addition, by flex point P1, P2 in X-Y plane On distance (length) be defined as the length of most long portion a.In addition, " wheel Guo curve " is to be removed with low-pass filter from cross section curve λc：Than 800 μm, (λ c are " to determine the filter of boundary between coarse component and ripple elements described in JIS-B0601 " 3.1.1.2 " Ripple ") short wavelength rough surface component after obtained by curve.In addition, such as λ c are set as between adjacent embossed pattern When more than the interval (being referred to as embossing interval) of P1, it is likely that peak is identified as noise, therefore, λ c are set smaller than pressure Flower interval.For example, it is set as 250 μm when embossing is at intervals of less than 800 μm, such as by λ c.In succession to the left or right side in Fig. 6 Follow-up embossed pattern similarly obtain P1, P2, the interval of the P1 between adjacent embossed pattern is adjacent embossed pattern Between two P1 when being arranged with P1, P2, P1 interval.

Equally, for the depth of the most long portion b with the most long perpendicular directions of portion a in Fig. 5 (a), also measure embossed pattern Depth D of the value of a larger side as embossed pattern in D, the depth D of each embossed pattern of the most long portion a and b of use.To toilet paper Face side any 10 embossed patterns carry out said determination, using depth D of its average value as final embossed pattern. As shown in fig. 7, if embossed pattern is connected in moving direction (MD directions), most long portion a is just identical with volume length, does not have height Low difference, it is impossible to measure the depth D of recess.Here, in the perpendicular width W side in the direction (MD directions) being connected with embossed pattern To rule A-B in a manner of across embossed pattern, can measure the depth D of recess.Equally, when embossed pattern is in width W side When being connected to (CD directions), in moving direction (MD directions) by across the A-B that rules in a manner of embossed pattern, to measure recess Depth D.

In addition, in the measure of the depth D of embossed pattern, when selecting any 10 embossed patterns, from roll toilet paper 1 The end (beginning to use position during toilet paper) of outer volume be initiated with 20% part long equivalent to the volume of roll toilet paper 1 It is measured.For example, when rolling up a length of 75m, it is measured in the part that 75m × 20%=15m is initiated with from end.In addition, volume When perforated lines are encountered in 20% long part, the outer volume side of perforated lines is measured.

In addition, during the depth D of measure embossed pattern, no matter single embossed pattern 2, or double embossed patterns, aspect of measure be The face side of toilet paper.

(area of embossed pattern)

The area of each embossed pattern of toilet paper in the roll toilet paper 1 of the present invention is by most long portion a and most long portion b Product (a × b) tried to achieve as the area S of embossed pattern.By 10 embossed patterns of the face side of above-mentioned toilet paper Value after each a, b value is average, as most long portion a and most long portion b.The assay method of the area of embossed pattern, can use upper The assay method of the depth D for the embossed pattern stated.

The area S of each embossed pattern of single embossed pattern 2 of toilet paper is preferably in the roll toilet paper 1 of the present invention 0.2mm²Above 9.0mm²Hereinafter, it is more preferably 1.0mm²Above 7.0mm²Hereinafter, it is more preferably 1.8mm²Above 5.0mm²Below. In addition, the area occupation ratio (having the ratio shared by the part of embossed pattern in toilet paper) of embossed pattern be preferably more than 3% 60% with Under, more preferably less than more than 7% 45%, still more preferably from less than more than 10% 30%.In the embossing for being difficult to try to achieve toilet paper During the area occupation ratio of pattern, area occupation ratio that can be using the area occupation ratio of the convex portion of knurling rolls 111 as embossed pattern.By scheming embossing The area and area occupation ratio of case can make aesthetics and winding density excellent in above-mentioned number range.

In addition, the shape of embossed pattern is rectangle, square etc., circle, ellipse etc., there is no particular limitation.Separately Outside, the above-mentioned shown size of embossed pattern and the area occupation ratio (number) of embossed pattern are suitably adjusted, coil diameter can be adjusted, twined Around density.

＜ whiteness ＞

Deinking Pulp such as contains fluorescent dye, then the value of whiteness of the toilet paper (scraps of paper layer) under the conditions of UV-in with The difference Δ of the value of whiteness under the conditions of UV-cut becomes larger.Here, UV-in refers to be advised CIE (International Commission on Illumination) Fixed illuminant-C (including ultraviolet light) irradiates the whiteness on the basis of ISO 2470 during scraps of paper layer surface side.UV-cut is Refer to, across by the optical filtering part of the ultraviolet light of below wavelength 420nm masking, when illuminant-C is irradiated to scraps of paper layer surface side with ISO Whiteness on the basis of 2470.Poor Δ=(whiteness UV-in)-(whiteness UV-cut).Whiteness is base with ISO 2470 Standard, can be measured using society of dye technology research institute of Murakami K. K. high speed spectrophotometer CMS-35SPX.

The difference of the whiteness UV-in and whiteness UV-cut of the face side of toilet paper in the roll toilet paper 1 of the present invention Preferably less than more than 0.0 2.5, more preferably less than more than 0.0 1.5, still more preferably from less than more than 0.0 1.0, particularly preferably For less than more than 0.0 0.5.

Measure ＞ in ＜ level grounds

It is 13.0g/m that the level ground of toilet paper in the roll toilet paper 1 of the present invention, which measures preferably every 1 layer,²Above 19.0g/m²With Under, more preferably 13.5g/m²Above 17.0g/m²Hereinafter, still more preferably from 14.1g/m²Above 16.0g/m²Below.

＜ thickness of paper ＞

The thickness of paper of toilet paper in the roll toilet paper 1 of the present invention be preferably 0.45mm/10 above 1.20mm/10 with Under, more preferably 0.55mm/10 above 1.05mm/10 are following, still more preferably from 0.65mm/10 above 0.90mm/10 Below.

The level ground amount and thickness of paper of every 1 layer of toilet paper in roll toilet paper 1 by making the present invention are arranged on above-mentioned numerical value model In enclosing, winding density and volume density can be easily adjusted, can manufacture that intensity is good, use feeling, volume height also good volume Cylinder toilet paper 1.

＜ specific volumes ＞

The specific volume of toilet paper in the roll toilet paper 1 of the present invention is by the thickness of paper of every 1 scraps of paper layer divided by every 1 Level ground is measured, with the volume cm of per unit g³To represent.

The specific volume of toilet paper in the roll toilet paper 1 of the present invention is preferably 3.0cm³/ more than g 7.5cm³/ below g, more Preferably 3.3cm³/ more than g 6.7cm³/ below g, still more preferably from 3.6cm³/ more than g 6.4cm³/ below g.

By the way that the specific volume of the toilet paper in the roll toilet paper 1 of the present invention is arranged in above-mentioned number range, so that Obtain that flexibility and the water imbibition of scraps of paper layer are good, be embossed the good roll toilet paper 1 of the volume size of processing.

＜ intensity ＞

For the intensity for the toilet paper for being laminated with 2 layers in the roll toilet paper 1 of the present invention, will be with JIS P 8113 The tensile strength of longitudinal direction during the drying of benchmark is as DMDT (Dry Machine Direction Tensile Strength the tensile strength of transverse direction when), will be dry is as DCDT (Dry Cross Direction Tensile strength).Moreover, it relates to roll toilet paper 1 in, will using the moving direction of the copy paper of product as longitudinal direction With the perpendicular direction of moving direction as transverse direction.

The DMDT for the toilet paper for being laminated with 2 layers in the roll toilet paper 1 of the present invention is preferably more than 2.5N/25mm 7.0N/ Below 25mm, more preferably more than 3.0N/25mm below 5.8N/25mm, still more preferably from more than 3.5N/25mm 4.5N/25mm Below.In addition, the DCDT for the toilet paper for being laminated with 2 layers in the roll toilet paper 1 of the present invention is preferably more than 0.7N/25mm Below 2.2N/25mm, more preferably more than 0.8N/25mm below 1.8N/25mm, still more preferably from more than 1.0N/25mm 1.5N/ Below 25mm.In addition, the measure of tensile strength carries out under conditions of draw speed is 300mm/min.In addition, tensile strength can To be adjusted using known method.

, can by the way that the DMDT and DCDT of toilet paper in the roll toilet paper 1 of the present invention are arranged in above-mentioned number range To obtain intensity and the good roll toilet paper 1 of flexibility.

＜ absorptions of water ＞

The absorption of water of toilet paper is measured on the basis of old JIS S 3104 in the roll toilet paper 1 of the present invention.

The absorption of water for the toilet paper for being laminated with 2 layers in the roll toilet paper 1 of the present invention is preferably less than 7.0 seconds, more preferably For less than 5.0 seconds, still more preferably from less than 3.0 seconds.By being set in above-mentioned number range, water imbibition and water suction can be obtained Spend good roll toilet paper 1.In addition, during by under water droplet, the face side of toilet paper is dripped to.

＜ recognitions ＞

On the basis of JIS P 4501, the recognition after toilet paper in the roll toilet paper 1 for anticipatory remark invention of tearing is measured

Recognition after the toilet paper for being laminated with 2 layers in the roll toilet paper 1 of one anticipatory remark invention is torn is preferably 8 seconds Below the above 60 seconds, more preferably less than 50 seconds more than 15 seconds, still more preferably from less than 40 seconds more than 20 seconds.By setting to upper State in number range, can obtain water-fast when toilet paper is wet by water when recognition and water-disintegrable and use warm water washing toilet seat The good roll toilet paper 1 of property.

[manufacture method of roll toilet paper]

The details of the manufacture method of roll toilet paper 1 and toilet paper to the present invention illustrates.

Roll toilet paper 1 and toilet paper can be utilized according to for example following order to manufacture (i) copy paper and corrugation, (ii) Up- coiler adds layer and press polish processing, (iii) embossing processing and roller to batch processing.

(i) copy paper and corrugation

First, on the diddle-net portion of known paper machine (wire part), by above-mentioned paper stock copy paper into serous coat piece (web), It is moved into the felt (felt) of pressurization part.As the mode in diddle-net portion, can enumerate such as cylinder, fourdrinier wire (Ford Buddhist nun is sub-) Formula, vacuum chest (suction breast) formula, short net formula, double net formulas, meniscus (Crescent former) formula etc..

Then, by using swabbing pressure roller, either the pressure roll without suction or pressure roller etc. carry out the de- of mechanical compress Water, the dewatering using the dry dehydration of the ventilation of hot wind etc., carry out serous coat piece to continue dehydration.In addition, swabbing pressure roller Or can also be as the means for making serous coat piece be moved to from pressurization part Yankee drier without the pressure roll of suction.

The serous coat piece of Yankee drier is moved to, after Yankee drier and Yankee drying hood are dried, is corrugated scraper Corrugation processing is imposed, then is batched by reel portion (reel part).

Corrugation (addition is referred to as the corrugated fold of wrinkle (crepe)) is in the longitudinal direction (scraps of paper on paper machine to paper Layer direct of travel) carry out mechanical compress.In the manufacture of the serous coat piece of toilet paper, the serous coat piece on Yankee drier, which is corrugated, to be scraped Knife is peeled off, then is batched by reel portion, and by the speed difference between Yankee drier and reel portion, (speed≤Yankee in reel portion is done The speed of dry device), form wrinkle (wrinkle) using creping doctor.

The required quality of toilet paper, i.e. volume (bulk sense), flexibility, water imbibition, smoothness of the surface, beauty (wrinkle The shape of line) etc. be subject to the left and right of above-mentioned speed difference.Though influenced by conditions such as above-mentioned speed differences, the reel starching after corrugation The level ground amount substantially 14g/m of diaphragm²Above 21g/m²Hereinafter, the level ground amount of the Yankee drier starching diaphragm before relatively wrinkling is become more Weight.Above-mentioned level ground amount is preferably 14g/m²Above 19g/m²Hereinafter, it is more preferably 15g/m²Above 18g/m²Below.Such as exceed above-mentioned Scope, then occur that intensity becomes higher the very hard situation of paper, the excessive situation of winding density, volume density, if less than above-mentioned model Enclose, then intensity decreases are easily damaged, or use feeling, volume size are deteriorated.

Here, the wrinkle rate of the speed difference based on Yankee drier and reel is defined by the formula.

Wrinkle rate (%)=100 × (Yankee drier speed (m/ points)-spool velocity (m/ points)) ÷ spool velocities (m/ Point)

Quality, the quality of operability substantially by the corrugation conditional decision, by the operating condition that the condition of corrugation optimizes for It is very important for those skilled in the art.In the present invention, wrinkle rate when manufacturing toilet paper is preferably more than 10% Less than 50%, more preferably less than more than 15% 40%, still more preferably from less than more than 20% 35%.

(ii) layer and press polish processing are added using up- coiler

Fig. 8 shows an example of up- coiler 100.

It is installed to after 2 are as above wrinkled by the reel 11 that reel portion is batched on up- coiler 100, with Yankee face (ヤ Application キー faces) mode on the outside is overlapped into 2 and carries out plus layer, form parent roll (former anti-ロー Le) 12.At this time, after layer is added, with the 1st The calender 101 of row, the order of the calender 102 of the 2nd row carry out two stage press polish processing.It is of course also possible to utilize the 1st row 101 and the 2nd row of calender calender 102 in either one, carry out only single phase press polish processing.In addition, also may be used To carry out press polish processing before layer is added, or using in machine press polish (on-machine calender).

The thickness of paper of the toilet paper of embossing before processing (after press polish processing) is preferably 0.50mm/10 above 1.40mm/10 Hereinafter, it is following that 0.60mm/10 above 1.20mm/10 are more preferably, still more preferably from 0.60mm/10 above 0.90mm/ Less than 10.In addition, the specific volume of the toilet paper in the parent roll 12 of embossing before processing (after press polish processing) is preferably 3.4cm³/g Above 6.5cm³/ below g, more preferably 3.7cm³/ more than g 6.0cm³/ below g, still more preferably from 4.0cm³/ more than g 5.5cm³/ Below g.

In addition, the thickness of paper of the toilet paper of embossing before processing is the thickness of paper in the parent roll 12 in Fig. 8 after press polish processing, equivalent to The thickness of paper t1 of Fig. 3.But as described later, since thickness of paper is to measure the value measured when loading is 3.7kPa, it is not accurate Reflect the thickness of paper t1 of Fig. 3.

The calender 102 of 101 and the 2nd row of calender of 1st row is preferably formed by 2 metallic rolls or 2 respectively 1 is resilient roller in roller, so as to carry out soft calendaring processing.

The line pressure of press polish is preferably more than 3.0kgf/cm below 8.0kgf/cm, more preferably more than 4.0kgf/cm It is 7.0kgf/cm following.By making line be pressed in above-mentioned number range, the coil diameter DR of flexibility and volume can be made good.In addition, Line pressure is preferably provided to the 2nd row and is higher than the 1st row.

Press polish can suitably adjust the tonicity (ドロー of the scraps of paper layer when handling).Reel 11 before layer is added is handled to press polish The tonicity of the scraps of paper layer between parent roll 12 afterwards is preferably less than more than 100% 110%, more preferably more than 102% 108% with Under.

Press polish processing after and embossing before processing parent roll 12 serous coat piece level ground amount be preferably every 1 layer of 13.5g/m²More than 20.5g/m²Hereinafter, it is more preferably 13.5g/m²Above 18.5g/m²Hereinafter, still more preferably from 14.5g/m²Above 17.5g/m²With Under.In roller described later batches processing, serous coat sector-meeting extension is some, and level ground amount can also reduce, it is therefore preferable that the volume with final form The target level ground amount of cylinder toilet paper 1 is compared to high more some level ground amounts.

In order to deepen the depth D of embossed pattern, it is necessary to the thickness of paper t1 of each scraps of paper layer is thinning, make convex-concave notable, because This, since pressurization carries out the press polish processing of body paper, can improve the flexibility of scraps of paper layer.Further, since batch processing in roller In, the extension of serous coat piece is some, therefore, also thinning with the level ground same thickness of paper of amount before and after batching, and can be handled and is adjusted to most by embossing The target thickness of paper of the roll toilet paper 1 of end form state.In addition, according to the difference of the pattern of embossing, it sometimes appear that being handled in embossing The thinning situation of thickness of paper afterwards, therefore, suitably adjusts body paper, press polish, to form target thickness of paper, the winding density of roll toilet paper.

(iii) embossing processing and roller batch processing

Fig. 9 shows that roller batches an example of processing machine 110.

Parent roll 12 is to advance with to add layer machine to add layer to 2 layers and handle by press polish, and (each scraps of paper layer of manufactured parent roll 12 Thickness of paper t1).The parent roll 12 is installed to roller to batch on processing machine 110, embossing unit (knurling rolls 111) is imposed at single embossing After reason, the paper roll 13 of above-mentioned coil diameter breadth is coiled into using spooler 113.Afterwards, which is cut into regulation Width (114mm etc.), is made roll toilet paper 1.

Roller batches processing machine 110 and is broadly divided into two kinds of surface based fashion and Central loop.Surface based fashion refers to use takers-in Other multiple driven rollers are from outside-supporting takers-in and the method batched, the coil diameter for the roll toilet paper 1 being taken up It is easy to control, speed of production is also more accelerated.Central loop is batched using the driving of the axis by batching roller center Method, the roll toilet paper 1 being taken up become soft product, are adapted to the product for imposing trickle embossing., can in the present invention To be batched using any method, but preferred surface based fashion.Such as utilize surface based fashion, then can be with using the intensity of winding volume It is easily adjusted the coil diameter and winding density of volume.

Alternatively, it is also possible to assemble up- coiler 100 in batching processing machine 110 in roller, using roller batch processing machine 110 successively into Row plus layer, press polish processing, embossing processing.After sanitary thin paper to be imposed to press polish processing respectively one by one, then into Row plus layer, embossing processing.

Single embossed pattern 2 is to shift the convex portion of the embossed pattern of knurling rolls 111 onto to make parent roll 12 be laminated 2 layers and form surface The one side of side, and formed.Thus, the face shifted onto on knurling rolls 111 of toilet paper (becomes face side in roll toilet paper 1 Face) on form recess 2R, the back side forms the embossed pattern (single embossed pattern 2) for showing and having convex portion 2P.

The depth D of embossed pattern can by adjusting it is with knurling rolls 111 opposite to the nip widths of rubber rollers 112 control System.For example, when if the bumps of knurling rolls 111 will be deep, nip width is narrowed, will if the bumps of knurling rolls 111 want shallow Nip width broadens, and thus adjusts the depth D of embossed pattern.Furthermore it is possible to intensity when winding is rolled up is adjusted to ensure to be embossed The depth D of pattern.If for example, the depth down of embossed pattern, embossed pattern when winding is rolled up becomes easily to damage by pressure, because This, can wind intensity when rolling up to adjust the depth D of embossed pattern by reduction.Specifically, processing machine 110 is batched in roller In, when coiling into the paper roll 13 of wide cut using spooler 113, can by will from outer circumferential side press paper roll 13 with incite somebody to action The pressing force for the traction air roll 114 that scraps of paper layer winds successively is set to be set in prescribed limit, to be adjusted.

Nip width is different because roller characteristic is different, is preferably more than 20mm below 50mm, more preferably more than 25mm Below 45mm, still more preferably from more than 30mm below 40mm.By the way that nip width is arranged in above-mentioned number range, can make Difference is good in the table for the sense of touch that the convex portion 2P of the recess 2R of the embossed pattern of face side and the embossed pattern of rear side is formed, and twines It is also good around density, the flexibility of scraps of paper layer.

Nip width can be measured using carbon paper.As assay method, first, the extruding of knurling rolls 111 is decontroled, by carbon Paper placement overlapping with general copying paper.Then, knurling rolls 111 are applied and extruded.Afterwards, extruding is decontroled, by carbon paper and duplicating Paper takes out.The color of carbon paper for the part for imposing extruding due to being embossed roller 111 is transferred to copying paper, can measure crowded Press width.

Processing machine 110 is batched using roller, printing can be carried out at the same time, embossed pattern is paid, perforated lines are processed, afterbody is close Seal, cut out to Rack (114mm etc.), roll toilet paper 1 can be manufactured.And then film packaging processing is carried out afterwards, it can make Make the package body of roll toilet paper 1.

In addition, the method as the flexibility for ensuring toilet paper, applies concavo-convex method if in surface, is not limited to press Floral pattern, can also be for example, apply bumps in copy paper using pique to serous coat piece.At this time, concavo-convex depth equivalent to The scope of the depth D of aftermentioned embossed pattern.

Embodiment

The containing ratio (quality %) formed with slurry is NBKP10%, LBKP60%, the side of the waste paper 30% from milk carton Formula is coordinated, and without Deinking Pulp, using the device shown in Fig. 8, Fig. 9, toilet paper and reel shown in manufacture table 1 and table 2 are defended Raw paper.

Conduct the following evaluation.

Measure on level ground：It is measured based on JIS P 8124, is converted into every 1 scraps of paper layer.

Thickness of paper：It is measured using thickness gauge (tail is rugged to make made dial thickness meter " PEACOCK ").Determination condition Under conditions of measure loading 3.7kPa, survey stator diameter 30mm, sample to be positioned between measure and measure platform, is read The speed for taking measure sub drops to scale during 1 second below 1mm.In addition, for the serous coat piece of press polish before processing, by scraps of paper layer weight Folded 10 are measured, and (after adding layer) and roll ups after being handled for press polish, the toilet paper 5 for being laminated with 2 layers of scraps of paper layer is opened (5 groups) weighs It is folded to carry out.In addition, measure repeats 10 times, measurement result is averaged.

Specific volume：The thickness of paper of each scraps of paper layer divided by the level ground of each are measured, with the volume cm of per unit g³Represent.

Longitudinal direction tensile strength when dry and transverse direction tensile strength DCDT during drying：It is right based on JIS P 8113 Toilet paper (2 layers), with the unit of N/25mm, measures the maximum loading until fracture.The measure of tensile strength is in draw speed Carried out under conditions of 300mm/min.

The coil diameter DR of volume：It is measured using Muratec-KDS Co. Ltd. system diameter rulers.Measure is measure 10 Volume, measurement result is averaged.

The outside diameter of SMIC：It is measured using Muratec-KDS Co. Ltd. system diameter rulers.Measure is in measure 10 Core, measurement result is averaged.

Volume length：For the scraps of paper layer between the perforated lines and perforated lines of roll toilet paper, the length of 10 scraps of paper layer part of actual measurement. Afterwards, the scraps of paper number of plies of volume is surveyed, from the length and the scraps of paper number of plies of 10 scraps of paper layer part, proportionally calculates and obtains volume length.For example, It is 2.275m × (330/10)=75m when the length of 10 scraps of paper layer part is 2.275m, the scraps of paper number of plies is 330 scraps of paper layer.In addition, When there is no perforated lines, it can be surveyed.

Winding density, volume density, the depth of embossed pattern of volume measure according to the method described above.

Though in addition, thickness of paper t2 of the thickness of paper equivalent to Fig. 3 of the toilet paper after table 1 and embossing processing shown in table 2, due to It is to measure the value measured when loading is 3.7kPa, therefore does not reflect thickness of paper t2 correctly.

In addition, the depth of embossed pattern is the value measured in the state of untreated without embossed pattern.Therefore, press The depth ratio of floral pattern calculated from thickness of paper t1, t2 get value (value be embossed pattern compressed with the measure loading of 3.7kPa and The value obtained) it is much bigger.

Sensory evaluation is carried out by 20 people of comment personnel, and metewand is evaluated with 5 points for full marks.Metewand is such as It is then good for more than 3 points.

In addition, the outside diameter of level ground amount, tensile strength, thickness of paper, specific volume, SMIC, volume length, coil diameter, winding density, volume are close Degree, volume flexibility and embossed pattern depth measure be under temperature and humidity conditions specified in JIS P 8111 (23 ± 1 DEG C, 50 ± 2%RH) keep equilibrium state and carry out.

Acquired results are shown in table 1, table 2.

【Table 1】

【Table 2】

From table 1, table 2, the volume length of roll toilet paper, coil diameter, winding density, volume density are in the range of specified value Each embodiment in, can level ground measure without decline in the case of, the flexibility of scraps of paper layer and volume improves jointly, and increases The volume length often rolled up.

On the other hand, although paying the embossed pattern of appropriate depth, the excellent flexibility of scraps of paper layer, volume it is long less than The coil diameter of the comparative example 1 of 63m increases less than 105mm, the replacement frequency of volume.

Though in addition, paying the embossed pattern of appropriate depth, the excellent flexibility of scraps of paper layer, volume length exceedes the comparison of 105m The coil diameter of example 2 is more than 140mm, coil diameter increase, it is difficult to retract into toilet paper dispenser.

In addition, the depth D of embossed pattern less than 0.01mm, volume density more than 0.32g/cm³Comparative example 3 in, embossing figure The concavo-convex degree of case diminishes, volume diminish (density increase), scraps of paper layer and volume flexibility deterioration.

The depth D of embossed pattern is more than 0.40mm, volume density less than 0.17g/cm³Comparative example 4 in, embossed pattern it is recessed Convex to become excessively significantly, volume becomes excessive (density is too low), and the coil diameter of roll toilet paper becomes larger more than 140mm, coil diameter, difficult To retract into toilet paper dispenser.

With roller batch processing machine excessively with strength it is (strong) winding toilet paper and volume density more than 0.32g/cm³Comparative example 5 In, coil diameter is deteriorated less than 105mm, the flexibility of volume.

With roller batch processing machine excessively it is light it is weak it is (soft) wind toilet paper and volume density less than 0.17g/cm³Comparative example 6 In, the coil diameter of roll toilet paper is more than 140mm, coil diameter increase, it is difficult to retract into toilet paper dispenser.

In addition, for commercially available product 1~2, same evaluation is carried out, both volume length increases less than 63m, the replacement frequency of volume It is more.

【Symbol description】

1 roll toilet paper

11 reels

12 parent rolls

13 paper rolls

100 up- coilers

The calender of 101 the 1st rows

The calender of 102 the 2nd rows

110 rollers batch processing machine

111 knurling rolls

112 rubber rollers

113 spoolers

114 traction air rolls

2 embossed patterns (single embossed pattern)

2R recesses

2P convex portions

Claims

1. a kind of roll toilet paper, it is the roll toilet paper that the toilet paper for being laminated with 2 layers has been coiled into web-like, wherein,

The toilet paper is equipped with embossed pattern,

A length of more than 63m below the 105m of volume, the coil diameter of the roll toilet paper are more than 105mm below 140mm, winding density For 1.1m/cm²Above 2.0m/cm²Below, volume density 0.17g/cm³Above 0.32g/cm³Below.

2. roll toilet paper according to claim 1, wherein, the depth of the embossed pattern is more than 0.01mm 0.40mm Below.

3. roll toilet paper according to claim 1 or 2, wherein, the embossed pattern is single embossed pattern.

4. according to roll toilet paper according to any one of claims 1 to 3, wherein, the toilet paper contain 40 mass % with The sulfate pulp of upper below 100 mass %.

5. roll toilet paper according to any one of claims 1 to 4, wherein, the toilet paper contains more than 0 mass % The old paper stock from milk carton of below 60 mass %.

6. according to roll toilet paper according to any one of claims 1 to 5, wherein, by as defined in International Commission on Illumination CIE The whiteness UV-in obtained according to ISO 2470 when illuminant-C is irradiated to the face side of the toilet paper with, across masking ripple The filter of the ultraviolet light of long below 420nm and when above-mentioned illuminant-C is irradiated to the face side of the toilet paper according to ISO The difference Δ of 2470 obtained whiteness UV-cut is less than more than 0.0 2.5.