WO2012132548A1 - 吸収体および吸収性物品 - Google Patents
吸収体および吸収性物品 Download PDFInfo
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- WO2012132548A1 WO2012132548A1 PCT/JP2012/052536 JP2012052536W WO2012132548A1 WO 2012132548 A1 WO2012132548 A1 WO 2012132548A1 JP 2012052536 W JP2012052536 W JP 2012052536W WO 2012132548 A1 WO2012132548 A1 WO 2012132548A1
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- pulp
- wood pulp
- absorbent
- absorbent article
- absorption
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/28—Polysaccharides or their derivatives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F2013/530007—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made from pulp
- A61F2013/530058—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made from pulp with specific method of producing wood pulp fibres
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F2013/530131—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp
- A61F2013/530343—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp being natural fibres
- A61F2013/530364—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp being natural fibres of bamboo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F2013/530131—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp
- A61F2013/530343—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp being natural fibres
- A61F2013/530372—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp being natural fibres of ramie or jute or linen
Definitions
- the present invention relates to an absorber using non-wood-derived pulp and an absorbent article including the absorber.
- An object of the present invention is to provide an absorbent body having high absorption efficiency using pulp derived from non-wood and an absorbent article including the absorbent body.
- this invention is an absorber containing a non-wood pulp, Comprising: The sedimentation rate in the water of a non-wood pulp is 2 second or more and 5 second or less.
- the present invention also relates to an absorbent comprising non-wood pulp, the non-wood pulp has an average fiber diameter of 8 to 25 ⁇ m, and the non-wood pulp has an apparent bulk density of 0.04 to 0.07 g / cm 3.
- the non-wood pulp absorbs 0.9% saline more than 20 times the mass of the pulp.
- the absorbent article of this invention contains the said absorber.
- this invention is an absorbent article provided with the absorber containing a non-wood pulp and SAP, Comprising: An absorber is 0.9% physiological saline with respect to the thickness before absorbing 0.9% physiological saline. The thickness change rate of the thickness after absorbing is 600% or more. Furthermore, this invention is an absorbent article provided with the absorber containing a non-wood pulp and SAP, and inject
- FIG. 1 is a plan view of an absorbent article according to an embodiment of the present invention.
- 2 is a cross-sectional view taken along the line AA of the absorbent article of FIG.
- FIG. 3 is a view for explaining a nylon mesh bag used for measuring the amount of absorption.
- FIG. 4 is a diagram for explaining the configuration of the absorbent article sample.
- FIG. 5 is a scanning electron micrograph of the cross-section of the pulverized pulp fibers.
- FIG. 6 is a view for explaining a cross-sectional structure of Manila hemp.
- the surface sheet 2 is a liquid-permeable sheet that allows body fluid to permeate, and is provided on the surface that comes into contact with the user's skin in order to improve the feel that the user feels when wearing the absorbent article 1. Therefore, it is preferable that the surface sheet 2 has a function of improving the touch.
- the surface sheet 2 is made of thin fibers, needs to have a smooth surface, and a large degree of freedom for deformation.
- a nonwoven fabric is generally used. It can be formed by an air-through method using a known card web.
- the manufacturing method of the nonwoven fabric used for the surface sheet 2 is not limited to the above air-through method.
- a needle punch, a spunlace method, a fiber that is made into a stable sheet by entanglement of the fiber web, the fiber itself or the fiber itself Binder bonding for fixing the web by melting, thermal bonding method, spunbond method for sealing with filament fibers, wet method for forming a sheet by papermaking, etc. may be used for the production of the nonwoven fabric.
- the fibers used for the nonwoven fabric of the surface sheet 2 are, for example, linear low density polyethylene (LLDPE), low density polyethylene (LDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), polypropylene, polybutylene and the like.
- LLDPE linear low density polyethylene
- LDPE low density polyethylene
- MDPE medium density polyethylene
- HDPE high density polyethylene
- polypropylene polybutylene and the like.
- EVA ethylene-vinyl acetate copolymer
- EAA ethylene-ethyl acrylate copolymer
- EAA ethylene-acrylic acid copolymer
- polyolefin resins such as ionomer resins
- PET polyethylene terephthalate
- PBT polybutylene terephthalate
- PTT polytrimethylene terephthalate
- polyester resin such as polylactic acid, polyamide resin such as nylon, or a mixture thereof.
- the leak-proof sheet 3 is a liquid-impermeable sheet that does not transmit body fluid, and is provided to prevent the discharged body fluid from leaking outside.
- the material of the leak-proof sheet 3 is not particularly limited as long as the material does not transmit the discharged body fluid.
- a waterproof nonwoven fabric, a plastic film made of polyethylene or the like, a composite material of a nonwoven fabric and a plastic film, or the like can be used for the leak-proof sheet 3.
- the absorber 4 has a function of absorbing and holding the discharged body fluid.
- the absorbent material used for the absorbent body 4 is preferably a mixture of pulp made from materials other than wood (hereinafter referred to as non-wood pulp) and a superabsorbent polymer (SAP). If non-wood pulp is included, the absorbent material used for the absorbent body 4 may be a mixture of an absorbent material other than SAP and non-wood pulp, or may be non-wood pulp alone.
- Non-wood pulp is a pulp other than wood pulp made from plants, and examples of non-wood pulp include linter pulp, manila hemp, kenaf, esparto grass, straw, bamboo and banana stems.
- the non-wood pulp used in the absorbent body 4 is preferably abaca pulp made from manila hemp, particularly a portion near the core of manila hemp, or an intermediate portion between the core of manila hemp and the outer skin, and a banana pulp made from banana stem. .
- the portion near the core of Manila hemp and the intermediate portion between the core of Manila hemp and the outer skin will be described.
- the cross-sectional structure of the Manila hemp 40 is classified into a core 41 of the Manila hemp 40, a portion 42 near the core, a middle portion 43, an outer next portion 44, and an outer side 45.
- the “part near the core of the Manila hemp” in this specification corresponds to the part 42 near the core of the Manila hemp 40 and the middle part 43
- the “intermediate part between the core of the Manila hemp and the outer skin” is the outer part of the Manila hemp 40. This corresponds to the next part 44.
- abaca fibers made from Manila hemp are classified according to the part that is the raw material for Manila hemp. Specifically, the abaca fiber has a raw material portion that is the core 41 of the Manila hemp 40, a portion that is close to the core 42, a portion that is the middle portion 43, a portion that is the next portion 44 on the outside, and Classified as being outside 45.
- abaca fibers are classified into AD, EF, S2 and S3 special grades depending on the part of Manila hemp.
- AD represents an abaca fiber using a portion 42 close to the core of the Manila hemp 40 as a raw material.
- AD Abaca fiber is a glossy pure white fiber.
- EF represents an abaca fiber using the middle portion 43 of the Manila hemp 40 as a raw material.
- the EF Abaca fiber is a fiber in the middle of a soft and pure fiber and has a light ivory color.
- S2 represents an abaca fiber made from the next portion 44 outside the Manila hemp 40 as a raw material.
- the abaca fiber of S2 is light ocher or light purple.
- S3 represents an abaca fiber made from the outer side 45 of the Manila hemp 40.
- Abaca fiber of S3 is dark red or purple and is mainly used for ropes.
- Abaca fibers can be classified into I, G and H special grades according to the raw material of Manila hemp.
- I represents an abaca fiber made from the middle portion 43 of the Manila hemp 40.
- I Abaca fiber is light yellow.
- G represents an abaca fiber made from the middle portion 43 of the Manila hemp 40 as a raw material.
- G represents an abaca fiber made from the next portion 44 outside the Manila hemp 40 as a raw material.
- the Abaca fiber of G is dull dark white and tends to be bound.
- H represents an abaca fiber made from the outer side 45 of the Manila hemp 40.
- Abaca fiber of H is brownish brown close to black and is mainly used for ropes.
- abaca fibers can be classified into JK and M1 special grades according to the raw material for Manila hemp.
- JK represents an abaca fiber made from the next portion 44 outside the Manila hemp 40.
- JK Abaca fiber is light brown or light green and is mainly used as pulp.
- M1 represents an abaca fiber made from the outer side 45 of the Manila hemp 40.
- M1 Abaca fiber is dark brown to black fiber and is mainly used for ropes.
- Abaca fiber of “part near the core of Manila hemp” corresponds to an abaca fiber of AD, EF or I
- an abaca fiber of “middle part of core of Manila hemp and outer skin” is an abaca fiber of S2, G or JK It corresponds to.
- the abaca fiber of the outer skin corresponds to the abaca fiber of S3, H or M1.
- the average fiber diameter of the non-wood pulp used for the absorber 4 is preferably 8 ⁇ m or more and 25 ⁇ m or less, more preferably 10 ⁇ m or more and 20 ⁇ m or less.
- the inter-fiber distance of the non-wood pulp is reduced, the force for sucking up the body fluid due to the capillary action of the non-wood pulp is increased.
- non-wood pulp fibers and non-wood pulp fibers and SAP are easily entangled, and even if the absorber is reduced in weight and thickness, the absorber does not collapse and maintains the shape of the absorber. it can.
- the average fiber diameter of the non-wood pulp is smaller than 8 ⁇ m, it is difficult to maintain the hollow structure, and there is a possibility that a problem that the bulk maintenance property is deteriorated may occur.
- the average fiber diameter of the non-wood pulp is larger than 25 ⁇ m, the above effect may be reduced.
- the fibers of non-wood pulp can easily enter between SAP particles, so that gel blocking can be suppressed.
- the content of lignin contained in the non-wood pulp used for the absorbent body 4 is preferably 0.5% by weight or less, and more preferably 0.3% by weight or less.
- the content of lignin contained in the non-wood pulp used for the absorbent body 4 is larger than 0.5% by weight, the average fiber diameter of the non-wood pulp used for the absorbent body 4 is increased, and the apparent appearance of the absorbent body 4 is increased. Since the bulk density increases and the hydrophilicity of the non-wood pulp decreases, the water absorption performance of the absorbent body 4 may decrease.
- the sedimentation rate in water of the non-wood pulp used for the absorbent body 4 is preferably 2 seconds or more and 5 seconds or less, and more preferably 2.5 seconds or more and 4 seconds or less.
- the fiber structure of the non-wood pulp is a hollow structure, and the fiber of the non-wood pulp is predicted to be hydrophilic, so that the amount of the body fluid absorbed by the user in the absorbent body 4 increases.
- the sedimentation speed is the time from when the basket containing the non-wood pulp comes into contact with the water surface until it settles below the water surface, measured as follows.
- the fiber structure of the non-wood pulp is a hollow structure
- air is contained in the hollow structure, so that the sedimentation of the non-wood pulp is delayed. If the sedimentation rate of the non-wood pulp is less than 2 seconds, the non-wood pulp fibers have a low porosity and are not so hollow, so the amount of fluid absorbed by the absorbent body 4 may be small. If the sedimentation rate of the non-wood pulp is 5 seconds or more, the hydrophilicity of the fibers of the non-wood pulp may be low, and the amount of body fluid absorbed by the absorbent body 4 may be small.
- the apparent bulk density of the non-wood pulp used for the absorber 4 is preferably 0.04 g / cm 3 or more and 0.07 g / cm 3 or less. Thereby, the volume in the absorber 4 for storing the absorbed body fluid of the user is increased, and the amount of absorption of the absorber 4 is increased.
- the apparent bulk density of the non-wood pulp is smaller than 0.04 g / cm 3 , there may be a problem that the absorbent body strength is lowered and the shape retention is deteriorated. If the apparent bulk density of the non-wood pulp is larger than 0.07 g / cm 3 , the volume for storing the absorbed body fluid of the user becomes small, and the absorption amount of the absorbent body 4 may be small.
- the absorption amount of 0.9% physiological saline of the non-wood pulp used for the absorbent body 4 is preferably 20 times or more with respect to the mass of the non-wood pulp. Thereby, by using a small amount of non-wood pulp compared to wood pulp, an absorber having an absorption amount equivalent to that of wood pulp can be obtained, and the absorber can be reduced in weight and thickness. If the absorption amount of 0.9% physiological saline of non-wood pulp is less than 20 times, the absorption amount of the absorber using non-wood pulp is almost the same as the absorption amount of the absorber using wood pulp. The absorption amount of the absorbent body 4 may be less effective in using non-wood pulp instead of wood pulp.
- the absorbent article of the present invention includes absorbent articles used by animals other than humans such as pets in addition to absorbent articles used by humans.
- Fiber specific gravity The fiber specific gravity in the pulp was measured according to JIS M 8717 using a He gas comparative hydrometer (manufactured by Tokyo Science Co., Ltd.).
- the heat seal 22 is formed at a position 5mm above the lower end, a position 5mm left from the right end, and a position 5mm right from the left end.
- a nylon mesh bag 24 having an open upper end 23 was produced.
- the pulverized pulp (y (g)) whose mass was measured in advance was put in the nylon mesh bag 24 to form a heat seal (not shown), and the open upper end 23 of the nylon mesh bag 24 was closed.
- the bag containing the pulverized pulp was immersed so as to touch the bottom of the beaker containing physiological saline, and left for 3 minutes.
- the pressurized water retention amount was calculated from the following equation.
- Pressurized water retention amount (g / g) ((z 2 ⁇ x) ⁇ y) / y (10)
- the bag containing the pulverized pulp measured in (8) is dehydrated with a centrifuge.
- the centrifuge used is a separator type H130 manufactured by Kokusan Centrifugal Co., Ltd.
- the rotation speed of the centrifuge was 850 rpm (150 G).
- the weight (z 3 ) of the bag containing the absorbent material after dehydration was measured.
- the rewetting amount of the absorbent article sample was calculated by subtracting the mass of the filter paper before being placed from the mass of the filter paper after being placed on the absorbent article sample. (7) The process from the injection of 0.9% physiological saline to the calculation of the rewetting amount of the absorbent article sample is performed 3 times every 10 minutes, and the absorption rate, diffusion length and rewetting amount data are obtained 3 times. I took it.
- Example 1 Abaca BKP (manufactured by Kokura Trading Co., Ltd., AK104), which is an abaca pulp made from a portion near the core of Manila hemp, was pulverized into fibers to produce Example 1 which was a pulverized pulp.
- AK104 Kokura Trading Co., Ltd., AK104
- Example 2 Abaca BKP (manufactured by Kokura Trading Co., Ltd., AK102), which is an abaca pulp made from an intermediate part between the core and the outer shell of Manila hemp, was pulverized into a fibrous form to produce Example 2 which was a pulverized pulp.
- Example 4 Produced and crushed pulp of Example 1 having a basis weight of 250 g / m 2, a basis weight 250 g / m 2 of SAP (manufactured by Sumitomo Seika Chemicals Co., Ltd., Aqua Keep SA60S) and were uniformly mixed absorber topsheet 32, the second sheet 36
- Example 4 which is the absorbent article sample 31 having the structure shown in FIG.
- the top sheet 32 is an air-through nonwoven fabric with a basis weight of 25 g / m 2
- the second sheet 36 is an air-through nonwoven fabric with a basis weight of 20 g / m 2
- the basis weight of the tissue 35 is 17 g / m 2
- the basis weight of the leak-proof sheet 33 was 17 g / m 2 .
- Each member was bonded using a spiral hot melt adhesive.
- the application basis weight of the spiral hot melt adhesive was 5 g / m 2 .
- Example 5 Produced and crushed pulp having a basis weight of 200 g / m Example 1 of 2, basis weight 250 g / m 2 of SAP (manufactured by Sumitomo Seika Chemicals Co., Ltd., Aqua Keep SA60S) and were uniformly mixed absorber, the absorption of the structure shown in FIG. 4 Example 5 which is a property article sample 31 was produced.
- Example 6 Produced and crushed pulp having a basis weight of 200 g / m Example 1 of 2, basis weight 200 g / m 2 of SAP (manufactured by Sumitomo Seika Chemicals Co., Ltd., Aqua Keep SA60S) and were uniformly mixed absorber, the absorption of the structure shown in FIG.
- Example 6 which is a property article sample 31 was produced.
- Example 7 Produced and crushed pulp having a basis weight of 250 g / m 2 of Example 2, basis weight 250 g / m 2 of SAP (manufactured by Sumitomo Seika Chemicals Co., Ltd., Aqua Keep SA60S) and were uniformly mixed absorber, the absorption of the structure shown in FIG. 4 Example 7 which is a property article sample 31 was produced.
- Example 8 Produced and crushed pulp of Example 4 having a basis weight of 250 g / m 2, a basis weight 250 g / m 2 of SAP (manufactured by Sumitomo Seika Chemicals Co., Ltd., Aqua Keep SA60S) and were uniformly mixed absorber, the absorption of the structure shown in FIG. 4 Example 8 which is a property article sample 31 was produced.
- SAP manufactured by Sumitomo Seika Chemicals Co., Ltd., Aqua Keep SA60S
- Comparative Example 1 Wood pulp (softwood bleached kraft pulp (NBKP)) was pulverized into fibers to produce Comparative Example 1 which was a pulverized pulp.
- Comparative Example 2 Bacus BKP (manufactured by Kokura Trading Co., Ltd.) was pulverized into a fibrous form to produce Comparative Example 2, which was a pulverized pulp.
- Comparative Example 3 Kenaf BKP (manufactured by Kokura Trading Co., Ltd.) was pulverized into fibers to produce Comparative Example 3 which was a pulverized pulp.
- Comparative Example 4 Produced and crushed pulp having a basis weight of 250 g / m Comparative Example 1 2, basis weight 250 g / m 2 of SAP (manufactured by Sumitomo Seika Chemicals Co., Ltd., Aqua Keep SA60S) and were uniformly mixed absorber, the absorption of the structure shown in FIG. 4
- the comparative example 4 which is a property article sample 31 was produced.
- Comparative Example 5 Produced and crushed pulp having a basis weight of 250 g / m 2 of Comparative Example 2, basis weight 250 g / m 2 of SAP (manufactured by Sumitomo Seika Chemicals Co., Ltd., Aqua Keep SA60S) and were uniformly mixed absorber, the absorption of the structure shown in FIG. 4 Comparative example 5 which is a property article sample 31 was produced.
- SAP manufactured by Sumitomo Seika Chemicals Co., Ltd., Aqua Keep SA60S
- Comparative Example 6 Produced and crushed pulp of Comparative Example 3 having a basis weight of 250 g / m 2, a basis weight 250 g / m 2 of SAP (manufactured by Sumitomo Seika Chemicals Co., Ltd., Aqua Keep SA60S) and were uniformly mixed absorber, the absorption of the structure shown in FIG. 4
- the comparative example 6 which is a property article sample 31 was produced.
- Table 1 shows the results of the average fiber diameter, lignin content, sedimentation speed, fiber specific gravity, apparent bulk density, absorption amount, water retention amount and water retention amount of the pulverized pulps of Examples 1 to 3 and Comparative Examples 1 to 3. Show.
- the amount of 0.9% physiological saline absorbed was 20 times or more of the mass of the pulp.
- the sedimentation rate was 2 seconds or more and 5 seconds or less.
- the average fiber diameter was 8 ⁇ m or more and 25 ⁇ m or less, and the apparent bulk density was 0.04 g / cm 3 or more and 0.07 g / cm 3 or less.
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Abstract
Description
すなわち、本発明は、非木材パルプを含む吸収体であって、非木材パルプの水における沈降速度は、2秒以上5秒以下である。
また、本発明は、非木材パルプを含む吸収体であって、非木材パルプの平均繊維径は8~25μmであり、非木材パルプの見かけ嵩密度は、0.04~0.07g/cm3であり、非木材パルプの0.9%生理食塩水の吸収量は、該パルプの質量に対して20倍以上である。
本発明の吸収性物品は、上記吸収体を含む。
また、本発明は、非木材パルプおよびSAPを含む吸収体を備えた吸収性物品であって、吸収体は、0.9%生理食塩水を吸収する前の厚みに対する0.9%生理食塩水を吸収した後の厚みの厚み変化率が600%以上である。
さらに、本発明は、非木材パルプおよびSAPを含む吸収体を備えた吸収性物品であって、80mLの0.9%生理食塩水を吸収性物品に10秒かけて注入し、吸収性物品の該0.9%生理食塩水の注入から吸収完了までの時間である吸収速度の評価を10分ごとに3回行った場合、該3回とも該吸収速度が20秒以下である。
Metso automation製 カヤーニ繊維長測定器 Fiber Lab3.8を使用して、約20000本測定し、平均繊維径とした。
パルプ中のリグニン含有量は、P.J.Van Soest らの方法(Proc. Nutr.Soc.,32,123(1973))に準じて測定した。
(1)円筒型のカゴの中に、5.0gの非木材パルプを均一に詰めた。このカゴは銅線で形成され、この銅線の直径は0.4mmであった。またカゴの重さは3gであり、直径は50mmであり、高さは80mmである。カゴの網目の銅線同士の間隔は20mmであった。
(2)2リットルビーカーに水深が200mmになるまでイオン交換水を入れた。
(3)非木材パルプが入っているカゴを、2リットルビーカー中の水の水面から10mmの高さから落とし、カゴが水面に接してから水面下に進行するまでの時間を測定した。この測定した時間が、非木材パルプの沈降速度となった。
パルプ中の繊維比重は、Heガス比較式比重計(東京サイエンス社製)を使用して、JIS M 8717に準拠して測定した。
粉砕パルプ10gを100mm×100mmに積層した。100mm×100mmの板を、積層した粉砕パルプの上に重ね、100g荷重の重りをその上に載せた。重りを載せてから10秒後の積層粉砕パルプの厚みを見かけ嵩とし、見かけ嵩密度を算出した。
(1)2Lビーカーに0.9%生理食塩水を1000mL入れ、液温を測定する。0.9%生理食塩水は、27.0gの塩化ナトリウム(試薬1級)を3Lビーカーに入れた後、イオン交換水と塩化ナトリウムとの合計量が3000.0gになるまで、3Lビーカーにイオン交換水を加えることによって作製した。
(2)250メッシュのナイロンメッシュ(NBC工業製、N-NO.250HD)を200mm×200mmの大きさに切り出して質量(x(g))を測定した後、図3(a)に示すようにB-B一点鎖線の部分を折って、ナイロンメッシュ21を半分に折った。図3(b)に示すように、折られた部分が右側になるように配置した後、下端から5mm上の位置、右端から5mm左の位置および左端から5mm右の位置にヒートシール22形成して、上端23が開放しているナイロンメッシュ袋24を作製した。質量を予め測定した粉砕したパルプ(y(g))をナイロンメッシュ袋24に入れ、不図示のヒートシールを形成して、ナイロンメッシュ袋24の開放している上端23を閉じた。
(3)粉砕パルプ入りの袋を生理食塩水の入ったビーカーの底に触れるように浸漬させ、3分間放置した。
(4)放置後、粉砕パルプが入った袋を引き上げ、3分間、自然放置にて水切りを行った。
(5)粉砕パルプが入った袋の重量(z1(g))を測定した。
(6)次式から吸収倍率を計算した。
吸収量(g/g)=((z1-x)-y)/y
(7)(6)で測定した、粉砕パルプが入った袋の上にアクリル板を載せ、重さ3.5kg、大きさ100mm×100mmのおもりをアクリル板の上にさらに載せ、3分間放置した。
(8)おもり、アクリル板を除き、粉砕パルプが入った袋の重量(z2(g))を測定した。
(9)次式から加圧保水量を計算した。
加圧保水量(g/g)=((z2-x)-y)/y
(10)(8)で測定した、粉砕パルプが入った袋を遠心分離器で脱水する。使用する遠心分離器は国産遠心(株)社製分離機 型H130である。遠心分離機の回転数は、850rpm(150G)であった。
(11)脱水後の吸収材料の入った袋の重量(z3)を測定した。
(12)次式から保水量を計算した。
保水量(g/g)=((z3-x)-y)/y
製品厚み計(PEACOCK製、50mmφ、3g/cm2、バネなし)を使用して、吸収性物品試料に用いる吸収体の厚みを測定した。吸収体の3箇所を測定して、3つの測定値の平均値を吸収体厚みとした。
(1)内径60φ、高さ50mmの円筒を、吸収性物品試料の表面シート上の吸収体中央部分に相当する部分に設置した。
(2)その円筒内に80mLの0.9%生理食塩水を10秒かけて注入した。0.9%生理食塩水は、上述の0.9%生理食塩水と同じである。
(3)0.9%生理食塩水の注入を開始してから、0.9%生理食塩水が吸収性物品試料に吸収されて円筒内から消えるまでの時間を計測した。この計測した時間が吸収速度(秒)となる。
(4)0.9%生理食塩水の注入を開始してから3分後に0.9%生理食塩水が拡散した範囲の輪郭を、油性インクペンを使用してなぞった。吸収性物品試料の長手方向で一番長い拡散距離を拡散長さ(mm)とした。
(5)0.9%生理食塩水の注入を開始してから5分後に吸収性物品試料から円筒を取り除き、予め質量を測定した約50gのろ紙(100mm×100mm)を吸収性物品試料上に置き、そのろ紙の上に3.5kgのおもり(100mm×100mm)を置いた。
(6)おもりを置いてから3分後にろ紙を取り除き、そのろ紙の質量を測定した。そして、吸収性物品試料に置いた後のろ紙の質量から置く前のろ紙の質量を引き算して、吸収性物品試料のリウエット量を算出した。
(7)0.9%生理食塩水の注入から吸収性物品試料のリウエット量を算出するまでのプロセスを10分ごとに3回実施し、吸収速度、拡散長さおよびリウエット量のデータを3回とった。
マニラ麻の芯近くの部分を原料とするアバカパルプであるアバカBKP(小倉貿易(株)製、AK104)を繊維状に粉砕して粉砕パルプである実施例1を作製した。
マニラ麻の芯と外皮との中間の部分を原料とするアバカパルプであるアバカBKP(小倉貿易(株)製、AK102)を繊維状に粉砕して粉砕パルプである実施例2を作製した。
バナナの茎を原料とするバナナパルプであるバナナBKP(小倉貿易(株)製)を繊維状に粉砕して粉砕パルプである実施例3を作製した。
目付250g/m2の実施例1の粉砕パルプと、目付250g/m2のSAP(住友精化製、アクアキープSA60S)とを均一に混合した吸収体を作製し、表面シート32、セカンドシート36、ティッシュ35、吸収体34および防漏シート33を備えた図4に示す構造の吸収性物品試料31である実施例4を作製した。表面シート32は目付25g/m2のエアースルー不織布であり、セカンドシート36は目付20g/m2のエアースルー不織布であり、ティッシュ35の目付は17g/m2であり、防漏シート33の目付は17g/m2であった。それぞれの部材を、スパイラルホットメルト接着剤を使用して貼り合わせた。スパイラルホットメルト接着剤の塗布坪量は5g/m2であった。
目付200g/m2の実施例1の粉砕パルプと、目付250g/m2のSAP(住友精化製、アクアキープSA60S)とを均一に混合した吸収体を作製し、図4に示す構造の吸収性物品試料31である実施例5を作製した。
(実施例6)
目付200g/m2の実施例1の粉砕パルプと、目付200g/m2のSAP(住友精化製、アクアキープSA60S)とを均一に混合した吸収体を作製し、図4に示す構造の吸収性物品試料31である実施例6を作製した。
(実施例7)
目付250g/m2の実施例2の粉砕パルプと、目付250g/m2のSAP(住友精化製、アクアキープSA60S)とを均一に混合した吸収体を作製し、図4に示す構造の吸収性物品試料31である実施例7を作製した。
(実施例8)
目付250g/m2の実施例4の粉砕パルプと、目付250g/m2のSAP(住友精化製、アクアキープSA60S)とを均一に混合した吸収体を作製し、図4に示す構造の吸収性物品試料31である実施例8を作製した。
木材パルプ(針葉樹晒しクラフトパルプ(NBKP))を繊維状に粉砕して粉砕パルプである比較例1を作製した。
バカスBKP(小倉貿易(株)製)を繊維状に粉砕して粉砕パルプである比較例2を作製した。
ケナフBKP(小倉貿易(株)製)を繊維状に粉砕して粉砕パルプである比較例3を作製した。
目付250g/m2の比較例1の粉砕パルプと、目付250g/m2のSAP(住友精化製、アクアキープSA60S)とを均一に混合した吸収体を作製し、図4に示す構造の吸収性物品試料31である比較例4を作製した。
目付250g/m2の比較例2の粉砕パルプと、目付250g/m2のSAP(住友精化製、アクアキープSA60S)とを均一に混合した吸収体を作製し、図4に示す構造の吸収性物品試料31である比較例5を作製した。
目付250g/m2の比較例3の粉砕パルプと、目付250g/m2のSAP(住友精化製、アクアキープSA60S)とを均一に混合した吸収体を作製し、図4に示す構造の吸収性物品試料31である比較例6を作製した。
2,32 表面材
3,33 防漏シート
4,34 吸収体
5,35 ティッシュ
21 ナイロンメッシュ
22 ヒートシール
24 ナイロンメッシュ袋
36 セカンドシート
40 マニラ麻
41 芯
42 芯に近い部分
43 真ん中の部分
44 外側の次の部分
45 外側
Claims (7)
- 非木材パルプを含む吸収体であって、
前記非木材パルプの水における沈降速度は、2秒以上5秒以下である吸収体。 - 非木材パルプを含む吸収体であって、
前記非木材パルプの平均繊維径は8~25μmであり、
前記非木材パルプの見かけ嵩密度は、0.04~0.07g/cm3であり、
前記非木材パルプの0.9%生理食塩水の吸収量は、該パルプの質量に対して20倍以上である吸収体。 - 前記非木材パルプは、マニラ麻の芯近くの部分、もしくはマニラ麻の芯と外皮との中間の部分を原料とするアバカパルプまたはバナナの茎を原料とするバナナパルプである請求項1または2に記載の吸収体。
- SAPをさらに含む請求項1~3のいずれか1項に記載の吸収体。
- 請求項1~4のいずれか1項に記載の吸収体を含む吸収性物品。
- 非木材パルプおよびSAPを含む吸収体を備えた吸収性物品であって、
前記吸収体は、0.9%生理食塩水を吸収する前の厚みに対する0.9%生理食塩水を吸収した後の厚みの厚み変化率が600%以上である吸収性物品。 - 非木材パルプおよびSAPを含む吸収体を備えた吸収性物品であって、
80mLの0.9%生理食塩水を前記吸収性物品に10秒かけて注入し、前記吸収性物品の該0.9%生理食塩水の注入から吸収完了までの時間である吸収速度の評価を10分ごとに3回行った場合、該3回とも該吸収速度が20秒以下である吸収性物品。
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CN201280014774.9A CN103442672B (zh) | 2011-03-25 | 2012-02-03 | 吸收体及吸收性物品 |
KR1020137026738A KR101670403B1 (ko) | 2011-03-25 | 2012-02-03 | 흡수체 및 흡수성 물품 |
BR112013022086-4A BR112013022086A2 (pt) | 2011-03-25 | 2012-02-03 | absorvente contendo polpa de não celulose e artigo absorvente |
US14/007,596 US9238087B2 (en) | 2011-03-25 | 2012-02-03 | Absorber and absorbent article |
EP12763755.1A EP2689759B1 (en) | 2011-03-25 | 2012-02-03 | Absorbent body, and absorbent article |
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EP (1) | EP2689759B1 (ja) |
JP (1) | JP5812641B2 (ja) |
KR (1) | KR101670403B1 (ja) |
CN (1) | CN103442672B (ja) |
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JP5839920B2 (ja) | 2011-09-30 | 2016-01-06 | ユニ・チャーム株式会社 | 吸収体及び吸収性物品 |
US10729600B2 (en) | 2015-06-30 | 2020-08-04 | The Procter & Gamble Company | Absorbent structure |
WO2017038963A1 (ja) * | 2015-09-02 | 2017-03-09 | 花王株式会社 | 吸収体の製造方法 |
BR112018009094A2 (pt) | 2015-11-04 | 2018-11-06 | Procter & Gamble | estrutura absorvente |
CN108348387B (zh) | 2015-11-04 | 2021-05-28 | 宝洁公司 | 吸收结构 |
CN108348380B (zh) * | 2015-11-04 | 2021-06-01 | 宝洁公司 | 薄型且柔性的吸收制品 |
CN108348379B (zh) * | 2015-11-04 | 2021-07-20 | 宝洁公司 | 薄型且柔性的吸收制品 |
CN107144498A (zh) * | 2017-05-12 | 2017-09-08 | 上海丰格无纺布有限公司 | 一种测试纸尿裤吸收速度、扩散长度和回渗量的方法 |
CN107184316A (zh) * | 2017-07-28 | 2017-09-22 | 广东佰分爱卫生用品有限公司 | 一种分切式线胶粘合生产不断层不起坨纸尿裤芯体的方法 |
CN110035837B (zh) | 2017-08-25 | 2021-10-22 | 株式会社Lg化学 | Sap评价装置 |
KR102342251B1 (ko) * | 2017-09-21 | 2021-12-21 | 주식회사 엘지화학 | Sap 선별 장치 |
KR102239213B1 (ko) * | 2017-09-28 | 2021-04-09 | 주식회사 엘지화학 | 고흡수성 수지의 재습윤 팩터를 측정하는 방법 |
JP6838014B2 (ja) * | 2018-06-29 | 2021-03-03 | ユニ・チャーム株式会社 | 吸収性物品 |
JP6839135B2 (ja) * | 2018-06-29 | 2021-03-03 | ユニ・チャーム株式会社 | 吸収性物品 |
JP6838015B2 (ja) * | 2018-06-29 | 2021-03-03 | ユニ・チャーム株式会社 | 吸収性物品 |
CN114748248B (zh) * | 2018-06-29 | 2022-09-27 | 尤妮佳股份有限公司 | 吸收性物品 |
JP6838013B2 (ja) * | 2018-06-29 | 2021-03-03 | ユニ・チャーム株式会社 | 吸収性物品 |
TWI797350B (zh) * | 2018-06-29 | 2023-04-01 | 日商優你 嬌美股份有限公司 | 吸收性物品 |
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EP2689759B1 (en) | 2016-06-22 |
CN103442672A (zh) | 2013-12-11 |
CN103442672B (zh) | 2016-10-12 |
KR20140010440A (ko) | 2014-01-24 |
US9238087B2 (en) | 2016-01-19 |
JP5812641B2 (ja) | 2015-11-17 |
JP2012200429A (ja) | 2012-10-22 |
KR101670403B1 (ko) | 2016-10-28 |
TW201302180A (zh) | 2013-01-16 |
EP2689759A1 (en) | 2014-01-29 |
US20140141970A1 (en) | 2014-05-22 |
EP2689759A4 (en) | 2014-10-15 |
BR112013022086A2 (pt) | 2020-11-24 |
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