WO2020162319A1 - Papier absorbant - Google Patents
Papier absorbant Download PDFInfo
- Publication number
- WO2020162319A1 WO2020162319A1 PCT/JP2020/003437 JP2020003437W WO2020162319A1 WO 2020162319 A1 WO2020162319 A1 WO 2020162319A1 JP 2020003437 W JP2020003437 W JP 2020003437W WO 2020162319 A1 WO2020162319 A1 WO 2020162319A1
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- WIPO (PCT)
- Prior art keywords
- tissue paper
- mass
- oil
- ply
- present
- Prior art date
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/002—Tissue paper; Absorbent paper
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/002—Tissue paper; Absorbent paper
- D21H27/004—Tissue paper; Absorbent paper characterised by specific parameters
- D21H27/005—Tissue paper; Absorbent paper characterised by specific parameters relating to physical or mechanical properties, e.g. tensile strength, stretch, softness
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K10/00—Body-drying implements; Toilet paper; Holders therefor
- A47K10/16—Paper towels; Toilet paper; Holders therefor
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
Definitions
- the present invention relates to tissue paper.
- tissue paper there are two types of tissue paper: moisturizing tissue in which a moisturizing agent containing polyol is applied to the base paper, and non-moisturizing tissue in which no moisturizing agent is applied to the base paper.
- the non-moisturizing tissue has the advantages that the moisture content does not increase due to the absorption of the polyol, has a firm feeling and a thick feeling, and the moisturizing agent is not transferred to the skin with a dry feeling due to a less sticky feeling.
- non-moisturizing tissue is a general-purpose type in which the price is important when the basis weight per ply is around 12 g/m 2 in 2 plies, called a general-purpose tissue, and the basis weight is higher and the price is higher.
- a general-purpose tissue in which the price is important when the basis weight per ply is around 12 g/m 2 in 2 plies, called a general-purpose tissue, and the basis weight is higher and the price is higher.
- moisturizing tissues there are some that belong to the high-grade product group.
- the latter non-moisturizing tissue paper has a high grammage and is thick, but in order to express the softness and smoothness as a high-grade product, it is possible to reduce the density of the paper and particularly to develop cushioning properties in the thickness direction. I've been told.
- the cushioning property in the thickness direction increases, but since the fibers on the surface become sparse and the roughness increases, it is difficult to further improve the softness and smoothness by simply reducing the density of the paper. .. Further, if the density of the paper is excessively reduced, the strength tends to be insufficient, and the firm feeling tends to be deteriorated. Further, when a large amount of the bulking agent is used to reduce the density of the paper, problems such as deterioration of the peelability from the dryer during papermaking are likely to occur.
- the main problem of the present invention is to provide a non-moisturizing tissue paper of high basis weight which is superior in softness and smoothness and has a firm feeling.
- the first means for solving the above problems is It is a 3-ply tissue paper,
- the basis weight per ply is 12.0 g/m 2 or more
- 3-ply paper thickness is 200 ⁇ 265 ⁇ m
- the moisture content is 4.0 to 9.0% by mass
- the second means is The dry tensile strength in the machine direction is 300 ⁇ 440cN, The dry tensile strength in the transverse direction is 130 ⁇ 200cN, The tissue paper according to the first means.
- the third means is The tissue paper according to the above-mentioned first means, wherein the polyol is not externally applied.
- the fourth means is The tissue paper according to the above first means, which does not contain glycerin.
- a non-moisturizing tissue paper having a high basis weight which is excellent in softness and smoothness and has a firm feeling, is provided.
- the tissue paper according to the present invention has three plies, and the basis weight per ply is 12.0 g/m 2 or more. Preferably, the basis weight per ply is 13.0 g/m 2 or more.
- the non-moisturizing high-class type has a basic weight of 14.0 g/m 2 or more for a 2-ply product, and the basic weight range is 14.0 to 17.0 g/m 2. Many are in the range. This is because if it is less than 14.0 g/m 2 , a feeling of thickness and a feeling of bulkiness are hard to be expressed, and it is difficult to feel a difference from a low-priced general-purpose product.
- 3 by increasing the ply and the number of plies, lower than 14.0 g / m 2 for basis weight, from 12.0 g / m 2 such that a range of general-purpose products if 2 ply As for the range, a thick feeling can be obtained, and a void is formed between the two plies to enhance the cushioning property, and a sufficiently luxurious feeling can be obtained as compared with a low-priced general-purpose product.
- the higher the upper limit of the basis weight of one ply the better the feeling of thickness, and is not necessarily limited. However, if the basis weight is excessively high, it becomes difficult to exhibit softness.
- Tissue paper 3 ply For Tissue paper 3 ply according to the present embodiment, 14.6 g / m 2 or less, more preferably it is desirable to 14.0 g / m 2 or less.
- 3 plies unlike 2 plies, a feeling of thickness and cushioning properties can be obtained even when the basis weight is set to a slightly low range.
- the three-ply structure gives you a solid feeling.
- the paper thickness is 200 to 265 ⁇ m in 3 plies. In the range of the above basis weight, the density is moderately low, and the cushioning property is likely to be felt in combination with the space between the plies.
- the basis weight in the present invention means a value measured based on JIS P 8124 (1998), and the paper thickness is after the humidity of the test piece is sufficiently adjusted under the conditions of JIS P 8111 (1998). Under the same conditions, it means a value measured using a dial thickness gauge (thickness measuring instrument) "PEACOCKG type" (manufactured by Ozaki Seisakusho).
- the specific procedure for this paper thickness measurement is to check that there is no dust or dust between the plunger and the measuring table, place the plunger on the measuring table, and move the memory of the dial thickness gauge to zero. Match the points, then raise the plunger to place the sample on the test bench, slowly lower the plunger and read the gauge at that time. At this time, just mount the plunger.
- the terminal of the plunger is made of metal so that a circular flat surface having a diameter of 10 mm hits the plane of the paper perpendicularly, and the load when measuring the paper thickness is about 70 gf.
- the average value is obtained by performing the measurement 10 times.
- the tissue paper according to the present invention has a water content of 4.0 to 9.0 mass %. Preferably, it is 4.0 to 8.0 mass %.
- the water content is measured as follows. Two sets of samples are taken from the object to be measured, and the humidity is controlled in a constant temperature and humidity room at 23° C. and 50% for 3 hours. Put each sample in a weighing bottle, seal it, and measure its mass. Then, with the lid of the weighing bottle open, the weighing bottle is placed in a dryer adjusted to 105 ⁇ 3° C. and dried for 4 hours.
- moisture content (mass %) ((weighing bottle + mass of sample before drying)-(weighing bottle + mass of sample after drying))/((weighing bottle + weight of paper before drying)- (Weight of weighing bottle)))
- Moisture content is calculated from the formula of 100.
- the difference in water content (mass %) between the two samples is within 1.0 mass %, the average value is adopted as the water content (mass %) of the sample.
- the moisture content is expressed in %, with one decimal point. On the other hand, if the difference in water content between the two sets of samples exceeds 1.0% by mass, retest.
- the moisture content of the tissue paper according to the present invention is in the range of 4.0 to 9.0 mass %.
- a feeling of dryness and a sense of luxury with a feeling of thickness are obtained.
- Moisturizing tissues generally have a water content of more than 10.0% by mass. If a non-moisturizing tissue is prepared by applying no moisturizing agent to the base paper, the above moisture content can be easily obtained.
- the moisturizer is a polyol such as glycerin, 1,3-butylene glycol, propylene glycol, 3-methyl-1,3-butanediol, 1,3-propanediol or 2-methyl-1,3-propanediol. It is an external additive liquid that improves the water content by its hygroscopicity.
- the tissue paper according to the present invention does not contain glycerin.
- Glycerin is preferably not included as an internal additive. Glycerin enhances the water content due to its high hygroscopicity, but it tends to develop a sticky feeling when contained.
- the tissue paper according to the present invention does not contain polyhydric alcohol having a valence of 3 or more. Although these are oily components, they easily develop a sticky feeling.
- the tissue paper according to the present invention contains 0.15 to 0.45% by mass of an oily component extracted with diethyl ether. Preferably, it contains 0.21 to 0.35% by mass. More preferably, it contains 0.23 to 0.30% by mass. Diethyl ether effectively extracts fats and oils which are low polar substances.
- the pulp which is the main raw material of tissue paper, does not contain oily components. Therefore, the oil component according to the present invention is contained due to the internal additive, particularly the internal softener.
- tissue paper containing an oily component there is one in which an oil component such as silicone or polysiloxane is applied by external addition, but the above range is a range in which it is difficult to apply it evenly with external addition.
- the inventors have found that the range of 0.15 to 0.45% by mass of the oily component is in the conventional non-moisturizing tissue regardless of whether it is a general-purpose type having a low basis weight or a high-grade type having a high basis weight. We have found that it is a high content that cannot be seen. If it is less than 0.15% by mass, the effect of improving the softness and smoothness is small, and if it exceeds 0.45% by mass, the cost is high and the production becomes difficult.
- the tissue paper according to the present invention has many oily components extracted by diethyl ether due to the internal additive. That is, a large amount of an oily component coats the surface of the pulp fiber, and the film of the oily component exerts a strong effect on the smoothness of the surface and the action of weakening the hydrogen bond between pulps, resulting in high softness. Further, since there are many oily components that cover the surface of the pulp fiber, the moisture of the pulp is retained by the emollient effect. That is, although the oily component itself does not have a hygroscopic effect, the pulp fiber itself does not interfere with the effect of retaining the absorbed moisture, and the moist feeling is not excessively lowered.
- the softening agent containing fats and oils in order to increase the content of oily components, it is possible to increase the addition amount of the softening agent containing fats and oils or increase the fats and oils components in the softening agent, but the fats and oils extracted with diethyl ether have a low polarity. Since it is a substance, generally, even if the amount of the softening agent added is increased, the fixing rate to the fiber cannot be increased. In addition, the adherability to the dryer may be reduced and the workability may be deteriorated. Therefore, in order to increase the fixing rate of the oil/fat extracted with diethyl ether on the fiber, it is preferable to increase the chances of contact between the pulp and the oil/fat.
- a weak cationic acidic softening agent containing a nonionic activator and a cationic activator is used at a low concentration of 25 to 35% by mass of the active ingredient, and the viscosity is 500 mPa ⁇ s or less.
- the above may be dispersed and supplied to the stock slurry at appropriate places.
- the amount of the softener used is adjusted depending on the kind of the softener, but is about 0.2 to 0.5 mass% with respect to the total weight of the pulp fibers. If it is less than 0.2% by mass, a sufficient softening effect may not be obtained, and if it exceeds 0.5% by mass, the fixing ratio may not increase.
- the type of softening agent is not necessarily limited, but a combination of a cationic surfactant and a nonionic surfactant is preferable as described above.
- emollient components such as higher alcohols, fatty acid esters, and acylamino acid esters can be added to the extent that the effects of the present invention are not impaired.
- a small amount of a moisturizer or the like can be added within a range that does not impair the action and effect of the present invention, but does not include the externally added polyol.
- emollient ingredients include avocado oil, almond oil, olive oil, camellia oil, sesame oil, rice bran oil, safflower oil, soybean oil, corn oil, rapeseed oil, kyounin oil, persic oil, peach kernel oil, castor oil, sunflower oil, Grape seed oil, cottonseed oil, coconut oil, wheat germ oil, rice germ oil, evening primrose oil, hybrid sunflower oil, macadamia nut oil, meadow foam oil, hazelnut oil, palm kernel oil, palm oil, coconut oil, cocoa butter, shea Fat, wood wax, mink oil, turtle oil, egg yolk oil, beef tallow, milk fat, lard, horse oil, jojoba oil, carnauba wax, candela wax, rice bran, orange laffy oil, beeswax, shellac, lanolin, montan wax, squalene.
- Hydrocarbons such as squalane, liquid paraffin, paraffin, microcrystalline wax, vaseline, soft liquid isoparaffin, hydrogenated polyisobutylene, ozokerite, ceresin, ⁇ -oleinphine oligomer, polybutene and polyethylene, or lauric acid, myristic acid, Palmitic acid, stearic acid, behenic acid, hydroxystearic acid, oleic acid, linoleic acid, ethylhexanoic acid, isostearic acid, isopalmitic acid, isotridecanoic acid, isononanoic acid, pentadecanoic acid, lauryl alcohol, stearyl alcohol, cetearyl alcohol, behenyl alcohol.
- squalane liquid paraffin, paraffin, microcrystalline wax, vaseline, soft liquid isoparaffin, hydrogenated polyisobutylene, ozokerite, ceresin, ⁇ -oleinphine oligomer, polybuten
- the cationic surfactant can be appropriately selected from quaternary ammonium salts, amine salts, amines and the like.
- Particularly suitable cationic surfactants are quaternary ammonium salts, which are preferably used. Specific examples include dilauryldimethylammonium chloride, distearyldimethylammonium chloride, dimyristyldimethylammonium chloride, dipalmityldimethylammonium chloride, distearyldimethylammonium chloride and the like.
- ester type As the nonionic surfactant, ester type, ether type, ester ether type, alkanolamide type, alkyl glycoside, etc. can be used.
- ester type sorbitan fatty acid ester, diethylene glycol monostearate, diethylene glycol monooleate, glyceryl monostearate, glyceryl monooleate,
- Examples of the ether type include polyoxyethylene alkyl ether and polyoxyethylene alkylphenyl ether, and specific examples thereof include polyoxyethylene cetyl ether and polyoxyethylene lauryl ether.
- the ratio of the oily component extracted with diethyl ether in the present invention is measured by a quick residual fat extraction device OC-1 manufactured by Intec Co., Ltd. or its equivalent or compatible device.
- This device puts the sample in the attached test tube having the extraction port at the bottom, and when the solvent is supplied, the extraction liquid drops from the extraction port and drops into the heated aluminum pan located at the bottom, leaving only the solvent. It is a mechanism that evaporates, and the amount of the extracted substance is obtained from the mass difference before and after the dropping of the extract liquid in the aluminum pan, and the oily component in the sample can be measured quickly and easily. Then, the ratio of the extract can be calculated from the amount of the extracted substance and the mass of the sample.
- the sample is two sets of tissue paper, one set of three plies, and the amount of diethyl ether used is 10 cc.
- the pushing start with the push rod is performed 60 seconds after the addition of diethyl ether.
- the tissue paper according to the present invention has a lateral bending rigidity of less than 0.006 gf ⁇ cm/cm and a lateral bending recovery force of less than 0.005 gf ⁇ cm/cm.
- This range is a low value for a non-moisturizing tissue paper having a high basis weight of 3 plies and a basis weight per ply of 12.0 g/m 2 or more.
- the tissue paper according to the embodiment of the present invention contains a large amount of an oily component and weakens the bond between the fibers, and therefore, the physical properties of the paper with respect to the paper force in the lateral direction are remarkable.
- the lateral bending rigidity and lateral bending recovery are when the sample is bent at a right angle to the flow direction of the sample, and the longitudinal bending rigidity and vertical bending recovery are the flow of the sample. This is when the sample was bent parallel to the direction. Since the lateral bending rigidity and lateral bending recovery force are indicators of bending in the direction orthogonal to the crepe ridge, the lateral bending rigidity and lateral bending recovery force are low, and it feels supple and soft. Cheap.
- the lateral bending rigidity and lateral bending recovery force according to the present invention were measured by a pure bending tester KES-FB2-A manufactured by Kato Tech Co., Ltd., or an equivalent machine thereof or a measuring instrument having a compatible function. It is a value.
- Bending rigidity is said to correlate with the softness and rigidity felt by a person when bending an object, and it is said that the higher the bending rigidity value, the stiffer, and the smaller the bending rigidity value, the softer. It is said that the bending resilience has a correlation with the resilience (elasticity) that a human feels when he or she bends an object back. The larger the value, the poorer the resilience, and the smaller the value, the less the resilience. Not good.
- the tissue paper according to the present invention preferably has a dry tensile strength in the longitudinal direction of 300 to 440 cN and a dry tensile strength in the transverse direction of 130 to 200 cN.
- a particularly preferred dry tensile strength in the transverse direction is 150 to 180 cN. If the dry tensile strength in the machine direction is in the range of 300 to 440 cN, the dry tensile strength is sufficient.
- the dry tensile strength in the lateral direction is less than 130 cN, it tends to tear during use. Further, if it exceeds 200 cN, it is difficult to feel the effect of improving the softness.
- the tissue paper according to the present invention has a low dry tensile strength particularly in the lateral direction.
- the dry tensile strength in the machine direction is a paper force in the direction in which the crepe is stretched, and therefore the strength is easily adjusted by the crepe.
- the preferable crepe ratio during the production of the tissue paper according to the present invention is 15 to 28%.
- the dry tensile strength in the transverse direction is a paper force in the direction orthogonal to the longitudinal direction in which the crepe is stretched, it is largely due to the bonding of the fibers and has an influence on the feeling of softness.
- the dry tensile strength in the lateral direction according to the present invention is a slightly low value for 3 plies, and this is because the hydrogen bond between fibers is weakened because the ratio of the oily component extracted with diethyl ether is large. I think that the.
- the dry tensile strength in the longitudinal direction is in the general range, but the dry tensile strength in the transverse direction is slightly low, and thus the softness is easily felt.
- the dry tensile strength according to the present invention refers to a value obtained by measuring the width of the sample at 25 mm based on the tensile test of JIS P 8113 (1998). In adjusting the dry tensile strength of the present invention, a known dry paper strength agent can be used.
- the tissue paper according to the present invention has a weak dry tensile strength in the lateral direction as a non-moisturizing high-basis-weight high-grade type of 3 plies, and further has a lateral bending rigidity and a lateral bending recovery force. Since it is lower than the non-moisturizing high-basis weight high-grade type, it has excellent softness and smoothness.
- the pulp fiber in the tissue paper according to the present invention is preferably a mixture of NBKP (softwood kraft pulp) and LBKP (hardwood kraft pulp).
- the tissue paper according to the present invention can contain known fibers such as chemical fibers, kenaf fibers, and cotton fibers within a range that does not impair the effects of the present invention.
- Example 1 a weakly cationic acidic softening agent containing a nonionic active agent and a cationic active agent was used as a softening agent at a low concentration of 25 to 35% by mass of an active ingredient and a viscosity of 500 Pa ⁇ s or less. It was used by increasing the fixing rate.
- the amount of the softening agent used in Example 1 was 0.35% by mass, and in Example 2, 0.40% by mass.
- the pulp fibers in Examples 1 and 2 are 100% virgin pulp and do not include waste paper pulp.
- the sensory test was evaluated as follows.
- the reference sample was Comparative Example 2, which is a commercial product.
- Comparative Example 1 the softness and smoothness are highly evaluated in advance, and the amount of the oily component extracted with diethyl ether is the highest among the Comparative Examples.
- the evaluation method was a method in which the evaluation of the reference sample was 4 points, and the samples of the other examples were evaluated with 1 to 7 points in comparison.
- test subjects had 1 point: much worse (hate) than the reference sample, 2 points: worse (hate) than the reference sample, 3 points: slightly worse (hate) than the reference sample, 4 Points: Same as the standard, 5 points: slightly better (like) than the standard, 6 points: better (like) than the standard, 7 points: much better (like) than the standard. ..
- FIG. 1 shows a graph of the results.
- Comparative Example 1 the basis weight is rather low, the paper thickness is higher than that of the present invention, and the density is excessively low.
- the density is excessively low, the dry tensile strength is reduced in length and width, but the flexural recovery property and flexural rigidity are not sufficiently reduced, and the evaluation of softness and smoothness is not enhanced. It is considered that this is because the effect of the paper thickness of one tissue being large is large and bending rigidity is high.
- the examples of the present invention have a low bending recovery property and bending rigidity, and in particular, a lateral bending recovery property. Both the lateral bending rigidity are low, and the sensory evaluation is significantly increased.
- Comparative Examples 2 to 4 have two plies, and the total grammage and the paper thickness are higher in the Example.
- the amount of extracted oil is large, the bending recovery is low, the lateral bending rigidity is low, and the sensory evaluation is high.
- the dry tensile strength is high.
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Abstract
Le problème décrit par la présente invention est de fournir un papier absorbant de haute qualité non hydratant présentant une excellente douceur. La solution selon l'invention porte sur un papier absorbant à trois épaisseurs qui a un grammage à une épaisseur de 12,0 g/m2 ou plus ; une épaisseur de papier à trois épaisseurs de 200 à 265 µm ; une teneur en humidité de 4,0 à 9,0 % en masse ; une teneur en huile extractible d'éther diéthylique de 0,15 à 0,45 % en masse ; une rigidité à la flexion latérale inférieure à 0,006 gf cm/cm ; et une force de rappel en flexion latérale inférieure à 0,005 gf cm/cm.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US17/426,870 US20220106740A1 (en) | 2019-02-04 | 2020-01-30 | Tissue paper |
EP20752793.8A EP3904597A4 (fr) | 2019-02-04 | 2020-01-30 | Papier absorbant |
CN202080009393.6A CN113302358A (zh) | 2019-02-04 | 2020-01-30 | 纸巾 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2019018169A JP7123321B2 (ja) | 2019-02-04 | 2019-02-04 | ティシューペーパー |
JP2019-018169 | 2019-02-04 |
Publications (1)
Publication Number | Publication Date |
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WO2020162319A1 true WO2020162319A1 (fr) | 2020-08-13 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2020/003437 WO2020162319A1 (fr) | 2019-02-04 | 2020-01-30 | Papier absorbant |
Country Status (5)
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US (1) | US20220106740A1 (fr) |
EP (1) | EP3904597A4 (fr) |
JP (1) | JP7123321B2 (fr) |
CN (1) | CN113302358A (fr) |
WO (1) | WO2020162319A1 (fr) |
Cited By (1)
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JP2022038229A (ja) * | 2020-08-26 | 2022-03-10 | 大王製紙株式会社 | フィルム包装ティシュー |
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JP7066600B2 (ja) * | 2018-11-30 | 2022-05-13 | 大王製紙株式会社 | ティシュペーパー |
JP2022086206A (ja) * | 2020-11-30 | 2022-06-09 | 大王製紙株式会社 | ティシューペーパー及びティシューペーパーの製造方法 |
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- 2020-01-30 US US17/426,870 patent/US20220106740A1/en not_active Abandoned
- 2020-01-30 CN CN202080009393.6A patent/CN113302358A/zh active Pending
- 2020-01-30 EP EP20752793.8A patent/EP3904597A4/fr active Pending
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Cited By (2)
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JP2022038229A (ja) * | 2020-08-26 | 2022-03-10 | 大王製紙株式会社 | フィルム包装ティシュー |
JP7317775B2 (ja) | 2020-08-26 | 2023-07-31 | 大王製紙株式会社 | フィルム包装ティシュー |
Also Published As
Publication number | Publication date |
---|---|
JP7123321B2 (ja) | 2022-08-23 |
EP3904597A1 (fr) | 2021-11-03 |
JP2020124339A (ja) | 2020-08-20 |
EP3904597A4 (fr) | 2022-09-28 |
CN113302358A (zh) | 2021-08-24 |
US20220106740A1 (en) | 2022-04-07 |
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