WO2005115738A1 - 親水性多孔性フィルム及びそれからなる多層フィルム - Google Patents
親水性多孔性フィルム及びそれからなる多層フィルム Download PDFInfo
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- WO2005115738A1 WO2005115738A1 PCT/JP2004/007843 JP2004007843W WO2005115738A1 WO 2005115738 A1 WO2005115738 A1 WO 2005115738A1 JP 2004007843 W JP2004007843 W JP 2004007843W WO 2005115738 A1 WO2005115738 A1 WO 2005115738A1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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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
- A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
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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
- A61F13/51—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 outer layers
- A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
- A61F13/51496—Backsheet, i.e. the impermeable cover or layer furthest from the skin having visual effects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/02—Cellular or porous
- B32B2305/026—Porous
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/728—Hydrophilic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249987—With nonvoid component of specified composition
- Y10T428/249991—Synthetic resin or natural rubbers
- Y10T428/249992—Linear or thermoplastic
Definitions
- Hydrophilic porous film and multilayer film comprising it
- the present invention relates to a hydrophilic porous film and a multilayer film composed thereof. More specifically, it shows a normal white color before it gets wet (when dry) and after it gets wet (wet light)
- a multilayer film is a multilayer film.
- porous films that are effective in preventing urine leakage and diaper rash are often used as backsheets for disposable diapers.
- the porous film has an infinite number of micropores formed inside, and light is irregularly reflected at an interface inside the porous film, so that the porous film exhibits white opacity. For this reason, when this is used for a disposable diaper pack sheet, the inside of the diaper is difficult to see from the outside. In particular, there is a problem that it is difficult to distinguish a pale color such as urine, and it is difficult for the wearer to visually recognize whether or not the urine has been excreted. Therefore, it is necessary to actually remove the diaper and check it by hand, which is inconvenient.
- Japanese Utility Model Laid-Open Publication No. 3-58414 and Japanese Unexamined Patent Publication No. Heisei 9-291401 disclose white fine particles that become transparent when water is absorbed, together with a resin binder and a hydrophilic base material such as paper. Is disclosed. If the back side of this base material is printed, the white fine particles and the base material become transparent when wet with water, and the print on the back surface can be seen through. This utilizes a physical change in which the refractive index of white fine particles is close to that of water, and when wet with water, random reflection of light on the surface of the fine particles is reduced and the particles become transparent.
- paper which is often used as a base material, has a hard touch and is not preferable for applications that directly touch the skin such as disposable diapers. Also, because of the high manufacturing cost, It is not preferable for disposable applications such as those described above. Furthermore, for the same reason, there is also a problem that the display area cannot be increased and visibility is poor.
- the present invention provides a film having a colored portion, which is white before being wet (when dry), transparent when wet (when wet), and is much more flexible than before. It is intended to provide materials. Another object of the present invention is to provide a film-like material that can be obtained at lower cost than before. Disclosure of the invention
- the present inventors have made intensive studies and as a result, achieved the above object by applying a partially colored layer on one surface of a hydrophilic porous film and providing a layer for preventing water permeation on the other surface. It has been found that the present invention can be performed.
- the film-shaped material of the present invention comprises a hydrophilic porous film having a colored portion on one surface and containing a thermoplastic resin as a main component, and a layer for preventing water permeation provided on the other surface. Consisting of a multilayer film.
- the hydrophilic porous film of the present invention further comprises a hydrophilic resin having 25 to 80 parts by mass of a thermoplastic resin, 75 to 20 parts by mass of a filler, and a total of 100 parts by mass of the thermoplastic resin and the filler.
- a thermoplastic resin composition having 0.1 to 10 parts by mass of a property imparting agent is formed into a film and then stretched in at least one direction.
- FIG. 1 is a schematic view of a printed pattern used in an example of the present invention.
- the multilayer film of the present invention is a multilayer film having a colored portion on one surface, a hydrophilic porous film containing a thermoplastic resin as a main component, and a layer for preventing water permeation provided on the other surface.
- the thermoplastic resin include a polyester resin, a polyamide resin, and a polyolefin resin.
- the polyester resin include polyethylene terephthalate and polybutylene terephthalate.
- the polyamide resin include nylon 6 and nylon 66. Etc. can be used.
- Polyolefin resin is preferable from the viewpoint Yu are flexible I 1 students Of these.
- the polyolefin resin used in the present invention is preferably a polymer mainly composed of a polymer of an olefin such as ethylene, propylene, butene, pentene, hexene, or vinyl acetate and a copolymer thereof, and specifically, Polyethylene resins such as low-density polyethylene, linear low-density polyethylene (ethylene-co-olefin copolymer), medium-density polyethylene, and high-density polyethylene; polypropylene-based resins such as polypropylene and ethylene-propylene copolymer; Examples include methylpentene, polybutene, ethylene-butyl acetate copolymer, ethylene-butene copolymer, and mixtures thereof.
- These polyolefin resins may be resins produced using a Ziegler catalyst, or resins produced using a single-site catalyst such as a meta-mouth catalyst.
- polyethylene-based resins are more preferred, and linear low-density polyethylene resins, which are ethylene- ⁇ -olefin copolymers, and low-density polyethylene are most preferred.
- the melt index of the polyolefin resin is preferably about 0.1 to 30 g Z l O mi ⁇ , considering the formability and stretchability of the film, and is preferably about 0.5 to 10 g / O mi ⁇ . More preferably, it is about the same.
- the density of polyolefin resin, 0 Considering the flexibility of the film. 9 1 0 to 0.9 4 0 it is preferably g is Z cm 3.
- the hydrophilic porous film used in the multilayer film of the present invention is obtained by molding a thermoplastic resin composition comprising 25 to 80 parts by mass of a thermoplastic resin and 75 to 20 parts by mass of a filler into a film. What is obtained by stretching is preferred.
- an inorganic filler or an organic filler can be used.
- the inorganic filler include calcium carbonate, barium sulfate, calcium sulfate, and barium carbonate.
- barium sulfate and calcium carbonate are preferred.
- carbonated calcium carbonate is more preferable.
- resin beads such as polystyrene, polymethyl methacrylate, and phenol resin are preferable.
- the composition ratio between the thermoplastic resin and the filler affects the moldability and stretchability of the film, the light transmittance of the obtained film when dry and when wet, and the like. If the amount of the filler is small, the number of micropores obtained by peeling off the interface between the thermoplastic resin and the filler decreases, and the light transmittance in a dry state increases, which is not preferable. On the other hand, if the amount of the filler is too large, it is not preferable because insufficient molding occurs when the film is formed, and sufficient stretching cannot be performed due to reduced stretchability. From the viewpoint of power, the composition ratio of the thermoplastic resin and the filler is preferably 25 to 80% by weight of the thermoplastic resin and 75 to 20% by weight of the filler.
- the content of the thermoplastic resin is 30 to 70% by weight, and the amount of the filler is 70 to 30% by weight.
- the average particle size of the filler is preferably 20 ⁇ m or less, more preferably 10 ⁇ or less, most preferably 0.5 to 5 ⁇ .
- the filler may be subjected to a surface treatment to improve the dispersibility with the thermoplastic resin.
- a surface treatment agent those capable of rendering the surface hydrophobic by coating the surface of the filler are preferable, and examples thereof include higher fatty acids such as stearic acid and lauric acid, and metal salts thereof.
- the hydrophilic porous film used for the multilayer film of the present invention is a thermoplastic resin.
- the resin composition is formed into a film shape and then stretched.
- the hydrophilic porous film is characterized in that a resin composition containing a thermoplastic resin and a filler contains a specific amount of a hydrophilicity-imparting agent, and the amount of the hydrophilicity-imparting agent depends on the light transmittance when wet. affect.
- the amount of the hydrophilicity-imparting agent is preferably 0.1 to 10 parts by weight, more preferably 0.5 to 100 parts by weight of the resin composition containing the thermoplastic resin and the filler. ⁇ 5 parts by weight.
- hydrophilicity-imparting agent examples include nonionic surfactants, anionic surfactants, and cationic surfactants.
- specific examples of the nonionic surfactant include polyoxyethylene alkyl. Ether, glycerin fatty acid ester, polyethylene glycol fatty acid ester, polyoxyethylene fatty acid ester, sorbitan fatty acid ester, as anionic surfactants, alkyl sulfate ester salt, polyoxyethylene alkyl ether sulfate ester salt, cationic surfactant
- an alkylamine salt can be used.
- nonionic surfactants are preferred because they are less susceptible to other ionic inclusions.
- at least one compound selected from fatty acid ester compounds is preferred from the viewpoint of controlling hydrophilicity.
- Fatty acid esters include esters of polyhydric alcohols or polyhydric alcohols with fatty acids.
- polyhydric alcohols and polyhydric alcohols include glycerin, polyglycerin, sonorebitan, ethylene glycolone, polyethylene glycol, propylene glycol, and polypropylene glycol.
- Fatty acids include coconut fatty acids, tallow fatty acids, caprylic acid, lauric acid, myrisulinic acid, palmitic acid, stearic acid, behenic acid, and oleic acid.
- hydrophilicity-imparting agents composed of the above fatty acid esters
- polyethylene glycol fatty acid esters are the most preferable in consideration of the bleed-out of the hydrophilicity-imparting agent during storage, migration of the hydrophilicity-imparting agent during use, and film formability. preferable.
- the average molecular weight of the polyethylene glycol which constitutes the polyethylene glycol fatty acid ester is determined by the bleed-out of the hydrophilicity-imparting agent during storage and the hydrophilicity-imparting agent during use. Affects migration and film formability. If the average molecular weight of the polyethylene glycol is too low, the hydrophilicity-imparting agent easily bleeds out during storage and is undesirably denatured with time. In addition, the hydrophilicity-imparting agent easily migrates during use, and the hydrophilicity-imparting agent is washed away by moisture, and the hydrophilic agent is diffused around, which is not preferable. Further, smoke is increased during melt extrusion molding, which is not preferable.
- the average molecular weight of the polyethylene dalicol constituting the hydrophilicity-imparting agent is preferably from 150 to 750, and more preferably from 300 to 500.
- the average molecular weight can be measured by an ordinary method using gel-reaction chromatography.
- the carbon number of the hydrocarbon group of the fatty acid constituting the polyethylene glycol fatty acid ester also has an effect on the bleed-out of the hydrophilicity-imparting agent during storage, migration of the hydrophilicity-imparting agent during use, and film formability. If the fatty acid has too few carbon atoms, the hydrophilicity-imparting agent is undesirably bleed-out during storage and denatures with time. In addition, the hydrophilicity-imparting agent easily migrates during use, and is particularly not preferable because the hydrophilicity-imparting agent is washed away by moisture and diffuses around. Further, the extrusion performance is poor, which is not preferable.
- the carbon number of the fatty acid is preferably from 12 to 16, more preferably from 12 to 14.
- fatty acid ester examples include “TB-122” and “TB 1259” manufactured by Matsumoto Yushi Seiyaku Co., Ltd. and “Riquemar O—71_DE” manufactured by Riken Vitamin Co., Ltd.
- the power is not limited to these as long as the above contents are satisfied.
- the hydrophilic porous film used in the multilayer film of the present invention includes other materials such as a stretching aid, a stabilizer, an antioxidant, a coloring agent, an ultraviolet absorber, and a dispersant as long as the object of the present invention is not hindered. Additives may be added.
- thermoplastic resin for example, the thermoplastic resin, the filler, the hydrophilicity imparting agent, If necessary, other additives are mixed using a Henschel mixer 1, a super mixer, a tumbler type 1 mixer or the like, and then kneaded using a single-screw or twin-screw extruder to form pellets.
- the pellets are extruded at a temperature equal to or higher than the melting point of the thermoplastic resin, preferably equal to or higher than the melting point + 20 ° C, and lower than the decomposition temperature. Melt and form a film using a known molding machine such as a molding machine. In some cases, film formation directly with a molding machine without pelletization is also included.
- the formed film has a range of from room temperature to the softening point of the resin (value measured by the method specified in JIS K-670) by a known method such as a roll method, a tenter method, and a gear method.
- a known method such as a roll method, a tenter method, and a gear method.
- the film is stretched at least uniaxially to cause interfacial separation between the thermoplastic resin and the filler, thereby producing a porous film. Stretching may be performed in one step or may be performed in multiple steps.
- the stretching ratio is related to the film tear during stretching and the light transmittance of the obtained film when dry, it is not preferable that the ratio is too high or too low.
- the stretching ratio is preferably at least 1.2 to 6 times in the uniaxial direction. More preferably, it is 1.4 to 5 times.
- biaxial stretching first stretch uniaxially in the machine direction or in a direction perpendicular to it, then stretch the second axis in a direction perpendicular to that direction, or in the machine direction and perpendicular to it.
- biaxial stretching is performed simultaneously in the direction of Either method is applicable.
- a heat fixing treatment may be performed as needed to stabilize the form of the obtained holes.
- the heat setting include a method of performing heat treatment at a temperature equal to or higher than the softening point of the resin and lower than the melting point for 0.1 to 100 seconds.
- the film may be subjected to corona treatment so that it can be easily colored by printing or the like, and so that water can easily permeate.
- the multilayer film of the present invention is partially colored on one side for visual recognition.
- the means for coloring is not particularly limited as long as the object of the present invention is achieved, but is preferably a printing process in which an increase in weight due to coloring is small. Print processing on one side By doing so, it is possible to obtain an effect that the printed pattern cannot be seen from the other side of the film when dry, but can be seen through when wet.
- Printing is not particularly limited, such as flexographic printing or gravure printing, and the ink used is not limited, such as solvent-based or water-based. There are no particular restrictions on the printing colors, and they may be monochromatic or multicolored.
- the print pattern there is no particular limitation on the print pattern, but in the solid print portion, water does not easily permeate into the holes inside the film from the print portion, and it tends to take a long time to make the film transparent during printing. Conversely, in the dot printing section, water easily penetrates into the holes inside the film even from the printing section and becomes transparent in a short time. It is preferable to adjust the solid printing section and the dot printing section according to the application. It is also possible to print on both sides according to the application, and to add a functional difference to water on the front and back sides.
- the layer may be the entire surface of the film or a part thereof.
- the layer of the polymer absorber can be provided on the print pattern by a method of further printing using a printing machine. In that case, the entire surface may be overcoated, or a dot may be partially applied.
- the thickness of the layer is not particularly limited, but if it is extremely thin, water cannot be absorbed effectively, and if it is extremely thick, flexibility and inexpensiveness are poor. Taking these factors into account, the value is usually about 0.1 ⁇ ⁇ 50 ⁇ .
- the multilayer film of the present invention it is preferable to provide a layer for preventing water permeation on the surface opposite to the surface provided with coloring for visual recognition.
- a layer that prevents the permeation of water it is possible to prevent the elution of the hydrophilicity-imparting agent in the film due to urine when used for visual recognition of urine and the like.
- the hydrophilicity-imparting agent is eluted from urine, urine comes into contact with the moisture-permeable porous film often used for leak-proof films such as humid, and becomes hydrophilic to the leak-proof film. There is a risk of leaking urine.
- the layer that is impermeable to water may form a multilayer film by a multilayer extrusion process.
- a film consisting of a thermoplastic resin layer containing a filler and a hydrophilicity-imparting agent, and a thermoplastic resin containing no filler And then uniaxially stretching in a machine direction between a preheating port and a stretching roll.
- a waterproof material may be coated on the film. For example, there is a method of coating an acrylic resin using a roll coater.
- the layer for preventing the permeation of water by printing the entire surface of the porous film using a transparent printing ink excluding the colorant and drying the printed film.
- Printing is not particularly limited, such as flexographic printing or gravure printing, and the ink used is not limited, such as solvent-based or water-based. However, solvent-based inks are preferable because they are more excellent in permeating water more difficultly.
- the thickness of the layer for preventing water permeation is not particularly limited. However, if it is extremely thin, water permeation cannot be effectively prevented, and if it is extremely thick, flexibility and inexpensiveness are poor. Taking these into consideration, the normal thickness is about 0.1 // m to 50 m.
- the thickness of the multilayer film of the present invention is not particularly limited. However, when the thickness is extremely large, it is not preferable because the light transmittance at the time of jetting becomes low and the flexibility and the cost are poor. Also, if the film is extremely thin, it is not preferable because the film is torn during molding. Taking these into account, the normal thickness is about 5 to 10 Owm. Preferably it is 7 to 70 / im. More preferably, it is 8 to 50 / zm.
- the multilayer film of the present invention produced as described above preferably has a total light transmittance in a dry state of less than 50% and a total light transmittance in a wet state of 50% or more. .
- the light transmittance in dry condition is 50% or more, the difference in light transmittance between dry condition and wet condition is reduced, and it becomes difficult to perceive the difference due to wetness, so it is used for water detection. Is not preferred.
- the total light transmittance at the time of etching is less than 50%, the printed pattern is difficult to see through from the back surface, which is not preferable for use in water detection.
- the total light transmittance when dry is less than 45 ° / 0
- the total light transmittance when wet is 55 ° / 0 or more.
- the difference between the total light transmittance between the dry state and the wet state is preferably 15 ° / 0 or more, more preferably 20% or more.
- the rigidity of the multilayer film of the present invention is 80 mm or less, and has an appropriate flexibility. Therefore, it is suitably used as an application requiring flexibility, for example, as a urine detection film for disposable honey.
- the lower limit of rigidity is not specified, but is usually about 10 mm.
- a multilayer film having strong properties has a low total light transmittance in a dry state and a high total light transmittance in a wet state, and can be suitably used as a film for water detection. Further, since it is highly flexible and inexpensive, it is suitable as a urine detection film for disposable paper diapers and the like.
- the melt index (hereinafter referred to as Ml), the total light transmittance when dry, the total light transmittance when wet, the film thickness, the rigidity, the migration property of the hydrophilicity-imparting agent, and the drying resistance shown in Examples are as follows. It is a value measured and evaluated by the method.
- MD direction The machine direction of the multilayer film
- TD direction the direction perpendicular to the machine direction
- Samples were collected in the same manner as in (2) above, and the film was immersed in pure water for 1 minute, and the water droplets on the surface were wiped off. Two points were measured using a haze meter. The above operation was repeated for each sample, and a total of 10 samples were measured at 20 points, and the average value was measured.
- the measurement was performed in accordance with the method (cantilever method) specified in JIS-L1096.
- the sample used for the measurement was a film with a width of 20 Omm and a length of 30 Omm wound around a 25 mm-wide metal scale, and then withdrawn from the metal scale.
- the obtained flat roll (width 25 mm, length 30 mm) Omm) was prepared by pressing back and forth once with a roller weighing 1 kg.
- a 20 Omm square porous film prepared according to Example 1 a 20 Omm square multilayer film of the present invention, and two 10 Omm square filter papers were layered in this order and colored in ink. 5 ml of water was dropped on the filter paper. Next, place a 10 kg weight of 100 mm square on the filter paper, and after 5 minutes, check whether the ink has leaked to the bottom surface (back side of the porous film without the hydrophilic agent) within the range of 10 Omm square. It was visually observed and evaluated as follows.
- a transparent acrylic plate was placed on the black pole paper of A4 size, and water 0.1cc was dropped on it.
- the multilayered film of the present invention was gently placed on the printed side of 3 cm ⁇ 4 cm square with the printed side down. At 1, 15, and 30 minutes, the appearance of the printed pattern was visually observed. For comparison, a multilayer film in a dry state was also observed and evaluated as follows. The temperature was 23 ° C and the relative humidity was 50%. ⁇ : clearly visible,
- Stable molding can be performed without film breakage or large decrease in extrusion rate.
- Linear low-density polyethylene L LDPE 1 (manufactured by Mitsui Chemicals, Inc., trade name: Ultrazex 2021 L, density: 0.920 g / cm 3 , mezlet index (MI): 2.1 g / 1 Om in) 38 parts by weight, branched low-density polyethylene LDPE (manufactured by Mitsui Chemicals, Inc., trade name: Mirason 27, density: 0.918 g / cm 3 , MI: 2. O g / l Om in) to 2 parts by weight of calcium carbonate C a C0 3 as filler (Co. Dowa Calw Ain Ltd., trade name: SST- 40, average particle size: 1.
- the hydrophilic agent A (Matsumoto Yushi Co., Ltd., trade name: TB-202, polyethylene glycol fatty acid ester) 3 parts by weight are mixed with a tumbler mixer, and then uniformly kneaded at 200 ° C using a tandem type extruder. And processed into a pellet.
- This pellet was melt-formed at 240 ° C using an extruder equipped with a T-die, and then stretched by a factor of 4.0 between a preheated roll heated to 70 ° C and a stretch roll.
- the film was uniaxially stretched in the machine direction by using to obtain a hydrophilic porous film having a thickness of 25 / xm.
- a center impression type flexographic printing machine was used to apply Hydrick SK293C Pull-I (H) manufactured by Dainichi Seihi Co., Ltd. as an ink.
- Hydrick SK293C Pull-I H
- Use SKN o.2 to adjust the viscosity to 20 seconds with a # 3 Zahn cup and use it to color print patterns (dot printing, 50 lines / inch, 50%) as shown in Fig. 1. did.
- the total light transmittance when dry, the total light transmittance when wet, the rigidity, the transfer of the hydrophilicity imparting agent, the drying resistance, and the moldability of the obtained porous finolem were measured and evaluated by the methods described above.
- Got Table 1 shows the results.
- FPOT-NWF (Medium MT Kai) manufactured by Osaka Printing Ink Manufacturing Co., Ltd. was manufactured by Osaka Printing Ink Manufacturing Co., Ltd. on the opposite side of the printed surface of the film prepared in Example 1 as an ink component (medium) excluding the colorant.
- the viscosity is adjusted to 20 seconds with a # 3 sun cup using the No. 3 solvent for ink manufactured by Co., Ltd., and the entire surface of the film is printed with a center-impression type flexographic printing machine using a fully convex plate. (Application).
- Table 1 shows the evaluation results of the obtained multilayer film.
- Example 2 was repeated except that the mixing ratio (unit: parts by weight) of the linear low-density polyethylene, the filler and the hydrophilicity-imparting agent, the stretching ratio, and the film thickness were changed as shown in Table 1 or Table 2. To produce a multilayer film. Each property of the obtained film was measured and evaluated in the same manner as in Example 1, and the results are shown in Tables 1 and 2.
- EXP 15078 Water Absorbing Media
- EXP 15078 (Curing from Osaka Printing Ink Mfg. Co., Ltd.) ) was printed (applied) over the entire surface of the film using a center-impression type flexographic printing machine by using a center impression type flexographic printing machine.
- Table 1 shows the obtained results.
- a multilayer film was obtained in the same manner as in Example 2, except that the printed surface of the film before printing obtained in Example 1 was subjected to corona treatment at 1 kV using a corona treatment device. Table 1 shows the obtained results. table 1
- Example Unit Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 mm LLDPE1 then DPE1 then DPE1 LLDPE1 then DPE1 L then DPE1 LLDPE1 LLDPE1 And DPE1 And DPE1
- the multilayer film of the present invention has improved flexibility, is less expensive, and has a function of detecting moisture such as urine equivalent to that of a conventional product. Therefore, it can be suitably applied in the fields of sanitary materials, medical materials, clothing materials, architectural materials, packaging materials, and the like, and is particularly suitable as a urine detection film for absorbent articles such as disposable ommu. Can be used.
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- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/569,695 US20080038537A1 (en) | 2004-05-31 | 2004-05-31 | Hydrophilic Porous Film and Multi-Layered Film Comprising the Same |
CNA200480043190XA CN1960857A (zh) | 2004-05-31 | 2004-05-31 | 亲水性多孔薄膜和由其制成的多层薄膜 |
PCT/JP2004/007843 WO2005115738A1 (ja) | 2004-05-31 | 2004-05-31 | 親水性多孔性フィルム及びそれからなる多層フィルム |
EP04745616A EP1752284A4 (en) | 2004-05-31 | 2004-05-31 | HYDROPHILIC POROUS FILM AND THIS COMPREHENSIVE MULTILAYERED FILM |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/007843 WO2005115738A1 (ja) | 2004-05-31 | 2004-05-31 | 親水性多孔性フィルム及びそれからなる多層フィルム |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005115738A1 true WO2005115738A1 (ja) | 2005-12-08 |
Family
ID=35450732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/007843 WO2005115738A1 (ja) | 2004-05-31 | 2004-05-31 | 親水性多孔性フィルム及びそれからなる多層フィルム |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080038537A1 (ja) |
EP (1) | EP1752284A4 (ja) |
CN (1) | CN1960857A (ja) |
WO (1) | WO2005115738A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023074731A1 (ja) * | 2021-10-29 | 2023-05-04 | 株式会社トクヤマ | 延伸多孔性フィルムおよびその製造方法 |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE60118737T2 (de) | 2001-09-19 | 2006-10-19 | The Procter & Gamble Company, Cincinnati | Farbbedruckte Mehrschichtstruktur, ein damit hergestellter absorbierender Artikel und Verfahren zu deren Herstellung |
US11786036B2 (en) | 2008-06-27 | 2023-10-17 | Ssw Advanced Technologies, Llc | Spill containing refrigerator shelf assembly |
US8286561B2 (en) | 2008-06-27 | 2012-10-16 | Ssw Holding Company, Inc. | Spill containing refrigerator shelf assembly |
WO2010042191A1 (en) | 2008-10-07 | 2010-04-15 | Ross Technology Corporation | Highly durable superhydrophobic, oleophobic and anti-icing coatings and methods and compositions for their preparation |
EP2496886B1 (en) | 2009-11-04 | 2016-12-21 | SSW Holding Company, Inc. | Cooking appliance surfaces having spill containment pattern and methods of making the same |
AU2010337633B2 (en) * | 2009-12-28 | 2014-01-30 | Teikoku Seiyaku Co., Ltd. | Tape Preparation |
WO2011116005A1 (en) | 2010-03-15 | 2011-09-22 | Ross Technology Corporation | Plunger and methods of producing hydrophobic surfaces |
PE20140834A1 (es) | 2011-02-21 | 2014-07-10 | Ross Technology Corp | Revestimiento superhidrofos y oleofobos con sistema aglutinantes con bajo contenido de cov |
DE102011085428A1 (de) | 2011-10-28 | 2013-05-02 | Schott Ag | Einlegeboden |
EP2791255B1 (en) | 2011-12-15 | 2017-11-01 | Ross Technology Corporation | Composition and coating for superhydrophobic performance |
BR112014032676A2 (pt) | 2012-06-25 | 2017-06-27 | Ross Tech Corporation | revestimentos elastoméricos que têm propriedades hidrofóbicas e/ou oleofóbicas |
WO2014051052A1 (ja) * | 2012-09-28 | 2014-04-03 | 株式会社ユポ・コーポレーション | 樹脂延伸フィルム、その製造方法およびその樹脂延伸フィルムを用いた積層体 |
US20220023103A1 (en) * | 2018-12-21 | 2022-01-27 | Kci Licensing, Inc. | Fluid status indicator for a wound dressing |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0358416U (ja) * | 1989-10-12 | 1991-06-06 | ||
JPH09140742A (ja) * | 1995-11-29 | 1997-06-03 | Uni Charm Corp | 使い捨ておむつ |
JPH09299401A (ja) * | 1996-05-16 | 1997-11-25 | Uni Charm Corp | 使い捨ておむつ |
JP2001151918A (ja) * | 1999-12-01 | 2001-06-05 | Yupo Corp | 多孔性樹脂フィルム |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3824844A (en) * | 1973-05-11 | 1974-07-23 | Water Rite Inc | Soil moisture monitor |
US4705513A (en) * | 1986-06-27 | 1987-11-10 | Sidney Sheldon | Disposable diaper with wetness indicator |
TW526066B (en) * | 1996-12-27 | 2003-04-01 | Kimberly Clark Co | Stable and breathable films of improved toughness, their products, and the method of making the same |
WO2001040361A1 (fr) * | 1999-12-01 | 2001-06-07 | Yupo Corporation | Film en resine poreuse |
AU1731801A (en) * | 1999-12-10 | 2001-06-18 | Oji-Yuka Synthetic Paper Co., Ltd. | Porous resin film |
EP1264705A4 (en) * | 2000-03-14 | 2005-06-08 | Yupo Corp | RECORD FOR INK JET PRINTER |
-
2004
- 2004-05-31 EP EP04745616A patent/EP1752284A4/en not_active Withdrawn
- 2004-05-31 WO PCT/JP2004/007843 patent/WO2005115738A1/ja not_active Application Discontinuation
- 2004-05-31 CN CNA200480043190XA patent/CN1960857A/zh active Pending
- 2004-05-31 US US11/569,695 patent/US20080038537A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0358416U (ja) * | 1989-10-12 | 1991-06-06 | ||
JPH09140742A (ja) * | 1995-11-29 | 1997-06-03 | Uni Charm Corp | 使い捨ておむつ |
JPH09299401A (ja) * | 1996-05-16 | 1997-11-25 | Uni Charm Corp | 使い捨ておむつ |
JP2001151918A (ja) * | 1999-12-01 | 2001-06-05 | Yupo Corp | 多孔性樹脂フィルム |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023074731A1 (ja) * | 2021-10-29 | 2023-05-04 | 株式会社トクヤマ | 延伸多孔性フィルムおよびその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1752284A1 (en) | 2007-02-14 |
EP1752284A4 (en) | 2008-08-20 |
CN1960857A (zh) | 2007-05-09 |
US20080038537A1 (en) | 2008-02-14 |
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