WO2005097268A1 - クッション性、ノンスリップ性に優れたシート状物 - Google Patents
クッション性、ノンスリップ性に優れたシート状物 Download PDFInfo
- Publication number
- WO2005097268A1 WO2005097268A1 PCT/JP2005/006494 JP2005006494W WO2005097268A1 WO 2005097268 A1 WO2005097268 A1 WO 2005097268A1 JP 2005006494 W JP2005006494 W JP 2005006494W WO 2005097268 A1 WO2005097268 A1 WO 2005097268A1
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- WIPO (PCT)
- Prior art keywords
- sheet
- polymer
- fiber
- base material
- ball
- Prior art date
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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
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B41/00—Hollow inflatable balls
- A63B41/08—Ball covers; Closures therefor
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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
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
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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
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
-
- 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
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2033—Coating or impregnation formed in situ [e.g., by interfacial condensation, coagulation, precipitation, etc.]
Definitions
- the present invention relates to a sheet having excellent cushioning and non-slip properties. More specifically, the present invention is suitable for use as a cover material for sports equipment such as basketball, for example, which has excellent surface wear strength, cushioning properties, and non-slip properties while having an excellent three-dimensional appearance. It relates to a sheet-like material that can be formed. Background art
- Balls such as basketball, handball, rugby ball, and American football require various characteristics.
- a surface material that repeats friction and collision with the hand and the floor surface requires a high level of surface wear strength, and catches the ball in the usage mode where it can be directly touched by hand.
- Soft cushioning to reduce the impact on the fingertips is required.
- Various methods have been conventionally proposed as methods for obtaining a sheet-like material having cushioning properties as a ball surface material and having a leather-like appearance and texture as palatability.
- a nonporous polymer elastic layer first layer
- a porous polymer elastic layer second layer
- a layer composed of a polymer elastic body and a nonwoven fabric third layer
- a nonwoven fabric layer third layer
- a leather-like sheet comprising at least four layers (fourth layer) and a ball comprising the leather-like sheet have been proposed (see Patent Document 1).
- a leather-like sheet having excellent appearance with a three-dimensional appearance it is made of a polyurethane-based transparent base material having a concave-convex pattern covered with a polyurethane layer.
- a synthetic leather having 50 to 90% of the surface area of the synthetic leather see Patent Document 2.
- Patent Document 2 a ball that is handled by hand such as a basketball can be obtained that has both a cushioning property and a durability that can withstand practical use.
- a wet coagulation coating layer of polyurethane is laminated on the surface of a fiber material containing polyurethane, the coating layer surface has a plurality of projections and valleys between the projections, and the side faces of the projections are opened.
- a ball material having a sweat absorbing property has been proposed (see Patent Document 3).
- Patent Document 3 the material disclosed in Patent Document 3 is dirty and accumulates when used for a long period of time, and the non-slip effect is extremely reduced, making it unusable for use and satisfying soft cushioning. Then, I got power.
- Patent Document 4 a basketball having a large number of polygonal concave portions on the outer surface has been proposed.
- a ball made of a sheet containing a fiber base material is inferior in softness, cushioning property and tactile sensation, and has abrasion resistance in the event of a collision with the ground. And the ball surface tends to be soiled.
- Patent Document 5 a basketball having a large number of specific depressions on the outer surface has been proposed.
- the shape of this depression is such that the height difference between the projections and depressions is 200 to 500 ⁇ m, the vertical projection area of adjacent depressions is 79 to 314 mm 2 (diameter 10 to 20 mm), and the average distance between depressions is 8 ⁇ 16mm (5/16-5/8 inches).
- the provision of such a large depression causes a problem that the wear resistance is reduced and the cushioning property and the non-slip property are inferior.
- Patent Document 1 JP-A-2000-102629
- Patent Document 2 JP-A-11-93081
- Patent Document 3 US Patent No. 6024661
- Patent Document 4 U.S. Pat.No. 4,918,842
- Patent Document 5 US Pat. No. 5,518,234
- the present invention provides a ball game ball with an excellent three-dimensional appearance.
- the present invention provides a sheet-like material having sufficient surface wear strength and non-slip properties as a surface material of a ball, and having a soft cushioning property that has never existed in the past, and which can be suitably used as a cover material for ball games and the like. Aim.
- the present inventors have conducted intensive studies in order to achieve the above object, and as a result, a convex portion substantially continuous on the surface and a concave portion having a different color tone from the convex portion and having a higher gloss than the convex portion. Have been found to be able to solve the above-mentioned problems by configuring to have a specific relationship, and have completed the present invention.
- the present invention relates to a sheet-like material having a polymer coating layer on the surface of a fiber base material, wherein the coating layer is substantially continuous with the surface and adjacent to the projection. has formed hemispherical recess, the recess has a different color to the convex portion, glossier convex portion is vertically projected area of Tsuyogu recess is 3 to 30 mm 2, adjacent concave portions to each other A sheet having a mean difference of 0.5 to 3 mm and a height difference of 50 to LOOO m between the convex portion and the concave portion.
- the sheet-like material of the present invention has a hemispherical concave portion that is substantially continuous with the surface of the sheet and has a different color tone from the convex portion and has a higher gloss than the convex portion. While having an excellent three-dimensional appearance, it also has sufficient surface wear strength as a surface material for ball balls, and has excellent cushioning properties that can reduce the impact given to the fingertip when catching the ball. In addition, it has a non-slip property that is exhibited by the three-dimensional shape formed by the convex portion and the concave portion engaging with the fingertip.
- the sheet-like material of the present invention includes grip tapes for various rackets such as a tennis racket, a nodington racket, and the like, including a ball directly touched by a hand such as a basketball, a handball, a rugby ball, and an American football. It can also be suitably used for surface covers such as handles for handles, hanging leather, and handrails for stairs.
- the fiber base material that can be used in the sheet material of the present invention various fiber base materials such as natural leather, knitted fabric, and nonwoven fabric can be used.
- a knitted or woven fabric or a non-woven fabric is used as a fiber base
- those containing a high-molecular polymer can be used as necessary, and those conventionally known as leather-like sheets can be used.
- a leather-like fiber base material composed of a fiber entangled body and a high-molecular polymer is preferred, and in particular, a polymer polymer is sponge inside a three-dimensional entangled nonwoven fabric used as a fiber entangled body. Those that are impregnated are preferred.
- a fiber constituting a knitted or woven fabric or a nonwoven fabric serving as a fiber base material as long as the mechanical properties required for the surface material of the ball can be satisfied, conventionally known natural fibers, synthetic fibers, and semi-synthetic fibers can also be used. Any of them can be used. Industrially known cellulose fibers, acrylic fibers, polyester fibers, polyamide fibers, etc., alone or in combination, are preferably used in terms of quality stability, price, and the like.
- the average fineness is 0.3 dtex or less, particularly preferably 0.1 ldtex or less, which is not particularly limited, but is preferable to ultrafine fibers which are closer to natural leather and can realize a soft feeling. And ultrafine fibers having an average fineness of at least 0.000 ldtex are preferably used.
- Methods of obtaining such ultrafine fibers include (a) a method of directly spinning ultrafine fibers having a desired average fineness, and (b) a method of producing ultrafine fibers that are thicker than the desired fineness. There is a method in which the fiber is spun and then denatured into ultrafine fibers having a desired average fineness.
- thermoplastic polymers having a compatibility are subjected to composite spinning or mixed spinning, and from these fibers, the polymer is obtained.
- at least one component is extracted or decomposed and removed, or the polymer is separated and separated at the surface of the constituent polymer.
- Typical fiber forms of the ultrafine fiber-generating fibers of the type from which at least one component is removed include so-called “sea-island fibers” and “multi-layer laminated fibers”.
- ultrafine fiber bundle comprising the components is obtained.
- typical examples of the fiber form of the ultrafine fiber-generating fiber of the type that separates at the interface of the constituent polymers include so-called petal-like laminated fibers and multilayer laminated fibers, and physical treatment. Ultrafine fiber bundles can be obtained by exfoliating each other at the interface between different kinds of polymers to be laminated by physical or chemical treatment.
- the island component polymer of the sea-island fiber or the multilayer laminated fiber is a polymer that can be melt-spun and sufficiently exhibit fiber properties such as strength, and has a melt viscosity higher than that of the sea component polymer under spinning conditions. Larger and higher surface tension polymers are preferred.
- island component polymers include polyamide polymers such as nylon 6, nylon 66, nylon 610, and nylon 612, and copolymers containing these as main components, or polyethylene terephthalate, polypropylene terephthalate, and polytrimethylene terephthalate. And polyester-based polymers such as polybutylene terephthalate, and copolymers mainly containing the same.
- a solvent used for dissolving and removing the sea component is different from the island component having a lower melt viscosity than the island component polymer in solubility and degradability.
- a polymer having low compatibility with an island component having high solubility in a decomposing agent or the like is preferable.
- polyethylene, modified polyethylene, polypropylene, polystyrene, modified polystyrene, modified polyester and the like are preferably used.
- the sea component is more than 70%, the absolute amount of the fiber that becomes the island component after dissolution or decomposition and removal is too small, and the leather-like sheet obtained has a sufficient level of mechanical strength as a base material for ball materials. It is difficult to stably maintain physical properties.
- a large number of components to be dissolved or decomposed and removed causes problems such as uneven quality due to poor removal and treatment of a large amount of removed components, and is inappropriate from the viewpoint of productivity such as production speed and cost. And industrially desirable, in form There is no.
- the method for producing a three-dimensional entangled nonwoven fabric that is preferably used as a fiber entangled body is not particularly limited as long as it is a method that can obtain a weight and a density suitable for a base material of a ball material. It can be manufactured by the following methods.
- the fibers used may be non-woven fabrics made of short fibers or non-woven fabrics made of long fibers.
- a web forming method any conventionally known method such as a card method, a paper making method, a spun bond method, and the like can be used.
- As a web entanglement method various conventionally known methods such as a needle punch method and a spunlace method can be used alone or in combination.
- a fiber obtained by spinning is stretched to about 1.5 to 5 times, then mechanically crimped, and cut to a length of about 3 to 7 cm. After defibrating into short fibers, the fibers are defibrated with a card to form a web of desired density through a webber, the obtained web is laminated to a desired weight, and then one or more pubs are laid. It is a method of entanglement of fibers in the thickness direction by punching at about 300 to 4000 punch Zcm 2 using 1 dollar.
- the obtained fiber entangled body such as a three-dimensional entangled nonwoven fabric is impregnated with a polymer if necessary.
- a solution or dispersion of the polymer is singly applied to the fiber entangled body by a known method such as a dipping method, a knife coating method, a bar coating method, a roll coating method, and a spray coating method. Or a combination thereof, and the polymer is coagulated by a dry method or a wet method so as to form a large number of voids in a sponge shape.
- any of known high-molecular polymers generally used in the production of leather-like sheets can be used.
- polyurethane-based resin, polyester-based elastomer Suitable examples include rubber resins, polyvinyl chloride resins, polyacrylic resins, polyamino acid resins, silicone resins, and modified products, copolymers, or mixtures thereof.
- rubber resins polyvinyl chloride resins, polyacrylic resins, polyamino acid resins, silicone resins, and modified products, copolymers, or mixtures thereof.
- These high molecular polymers are aqueous dispersions. After impregnating the fiber entangled body as an organic solvent solution, when using an aqueous dispersion, a dry method is mainly used, and an organic solvent solution is used. In this case, the mixture is mainly solidified into a sponge by a wet method.
- a drying agent By adding a drying agent, it is possible to achieve more uniform solidification in the thickness direction by combining a dry method or a method such as steaming with far-infrared heating. If an organic solvent is used, More uniform voids can be obtained by using the coagulation modifier together.
- polyurethane resin is preferably used from the viewpoint of a feeling in a composite state with the fiber entangled body and various physical properties.
- polyurethane resins include, for example, at least one kind of polymer diol selected from polyester diol, polyether diol, polyester ether diol, polyratatone diol, polycarbonate diol, and the like having an average molecular weight of 500 to 3,000, and tolylene diisobutane. Cyanate, xylylene diisocyanate, phenylene diisocyanate, 4,4'-diphenylmethane diisocyanate, 4,4'-dicyclohexynolemethane diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, etc.
- polymer diol selected from polyester diol, polyether diol, polyester ether diol, polyratatone diol, polycarbonate diol, and the like having an average molecular weight of 500 to 3,000, and tolylene diisobutane. Cyanate, xylylene diisocyanate, phen
- At least one kind of organic diisocyanate such as aromatic, alicyclic or aliphatic organic diisocyanate, and at least one active hydrogen atom such as diol, diamine, hydroxyamine, hydrazine and hydrazide.
- Low-molecular-weight compound having at least two types
- Polyurethanes obtained by reacting at least one selected type of chain extender with a predetermined molar ratio.
- Polyurethane may be a mixture of a plurality of polyurethanes, if necessary, or a polymer composition obtained by adding a polymer such as synthetic rubber, polyester elastomer, or polyvinyl chloride. It can also be used as
- the fiber is impregnated and coagulated with a polymer solution or a dispersion liquid, at the stage of a composite sheet after coagulation, or before impregnation and coagulation.
- the ultrafine fiber-generating fiber is transformed into an ultrafine fiber bundle by performing an ultrafine fiber treatment, whereby a leather-like fiber base material comprising an ultrafine fiber entangled body and a polymer can be obtained.
- the ultrafine fiber treatment is performed at the composite sheet stage, particularly for sea-island type fibers, the sea component polymer is removed and the ultrafine fiber bundle and the high molecular weight polymer are separated.
- Gaps are formed between them, and the binding of the ultrafine fiber bundle by the high molecular weight polymer is weakened, so that the texture of the leather-like substrate tends to be softer.
- This method is preferably used in the present invention. This is a possible way.
- the texture of the leather-like base material tends to be harder because the ultrafine fiber bundle is strongly restrained by the high molecular weight polymer.
- the proportion of high molecular weight polymer in the base material By reducing the proportion of high molecular weight polymer in the base material, the tendency to harden can be sufficiently suppressed, and the rich and firm feeling that can be obtained when the proportion of fibers is higher is obtained. It is also the preferred method for the purpose.
- the thickness of the fiber base material can be arbitrarily selected according to the intended use, for example, the surface material of the ball, depending on the type of the ball, the required physical properties, or the texture that the player prefers. Although not particularly limited, it is preferably 0.4 to 3.0 mm. If the thickness of the fiber base material is less than 0.4 mm, it is used not only as a ball material but also as a cover material for various rackets, handles, handrails, and other grip parts, so that it has high tensile strength, tear strength, and abrasion resistance. In some cases, it may be difficult to ensure the minimum necessary mechanical properties.
- the thickness of the fiber substrate exceeds 3.Omm
- the mass ratio between the fiber and the high molecular polymer in the fiber base material is not particularly limited in the essential meaning of the present invention, which can be appropriately selected for adjusting physical properties and hand. Not a thing.
- the mass ratio of the fiber Z high molecular weight polymer is usually 35Z65 to 65Z35, preferably 40,60 to 60,40.
- the mass ratio of the fiber Z polymer is usually 65Z35 to 95Z5, preferably 60Z40 ⁇ 90ZlO range
- the sheet-like material of the present invention has a coating layer having a high molecular weight polymer on the surface of the fiber base material.
- Various methods can be adopted for coating the surface of the fiber base material with the high-molecular polymer.
- The for example, a polymer dispersion, solution, or melt is applied continuously to the substrate surface in an amount regulated by a fixed clearance set between the substrate surface and a knife, bar, roll, etc.
- a method of drying and solidifying into a film state or a porous state by a dry method a method of coagulating and drying into a porous state by a wet method, and a method of melt-casting.
- the polymer polymer layer is preferably in a porous state.
- a method of coagulating and drying by a dry or wet method is preferred.
- continuous projections are formed by a transfer method using release paper
- a method of solidifying and drying the surface touch and the point force of texture by a dry method or a wet method is preferable.
- an additive such as a foaming agent is used, and coagulation and drying are generally performed continuously by a dry method.
- a solution it is generally preferable to solidify the polymer in a porous state by applying a treatment solution containing a poor solvent for the polymer or by immersing the solution in a treatment bath. Is the law.
- a polymer liquid dispersion or solution is applied to a transfer release sheet such as a film or release paper in a predetermined amount. After coating, the polymer is dried into a film state or coagulated and dried into a porous state in the same manner as described above, and then the resultant is adhered to a fiber base via an adhesive or There is a method of using a treatment liquid containing a solvent of a molecular polymer to integrate by bonding by re-dissolving and then peeling off the release transfer sheet. Similarly, a predetermined amount of the polymer dispersion or solution is applied to the transfer release sheet in the same manner. It is also possible to adopt a method in which the base material is adhered after the cloth is formed, before drying or coagulation, or in the middle, so that the high molecular polymer layer and the base material are integrated simultaneously with coagulation.
- the high-molecular polymer forming the coating layer is preferably a resin capable of imparting a certain degree of non-slip property, rather than a resin having a slippery property as the resin itself, for example, synthetic rubber and polyester.
- Elastomer, polyvinyl chloride, polyurethane resin, etc. can be used.
- polyurethane resins are preferably used in the same manner as the high molecular weight polymer to be contained in the fiber entangled body, from the viewpoint of balance such as elasticity, softness, wear resistance, and formability of a porous state.
- polyurethane resin examples include the various polyurethanes described above. If necessary, a mixture of a plurality of types of polyurethanes may be used, or a polyurethane obtained by adding a polymer such as synthetic rubber, polyester elastomer, or polychlorinated rubber may be used. Can be used as a polymer composition.
- a polyurethane mainly containing a polyether-based polymer diol represented by polytetramethylene glycol is preferably used in terms of hydrolysis resistance and elasticity.
- additives such as a colorant, a light stabilizer, and a dispersant may be used alone or in combination of two or more to suit the purpose. It is added appropriately.
- a coagulation controlling agent for wet coagulation and the like are selected as necessary, and may be used alone or in a number. It is also preferable to add a combination of seeds.
- polyurethane When polyurethane is used as the high molecular weight polymer, a polyurethane-based solution is applied onto a fiber base material and then immersed in a treatment bath containing a poor solvent for polyurethane, so that the polyurethane is in a porous state. Can be coagulated.
- a poor solvent for polyurethane water is typically used preferably.
- the mixing ratio should be set appropriately.
- the solidification state that is, the porous state and shape can be controlled, and this method is preferably employed.
- the sheet-like material of the present invention has a polymer coating layer on the surface of a fiber base material, and a convex portion and a hemispherical concave portion (hereinafter simply referred to as a concave portion) substantially continuous with the surface of the coating layer. Sometimes.) Are formed on the sheet-like material.
- the “substantially continuous convex portion” is formed, for example, around a concave shape (concave portion) in which a plurality of convex shapes pressed by a surface-side force are spaced apart on a flat sheet surface. It refers to such a surface condition.
- any conventionally known method can be used as long as a desired uneven shape can be stably provided.
- a method of embossing the surface of a sheet-like material having at least a surface layer formed of a high-molecular polymer with an embossing roll having a desired uneven shape, or a release sheet having a desired uneven shape It is possible to adopt a method in which a polymer layer formed by casting and solidifying a polymer solution is used as a surface layer of a sheet.
- the concave portion formed adjacent to the convex portion has a vertical projection area of 3 to 30 mm 2 , an average interval between adjacent concave portions of 0.5 to 3 mm, and a convex portion. It is necessary that the height difference between the concave portion and the concave portion is 50 to: LOOO m.
- the forming method include a method of forming the above-described convex shape using an embossing hole, a method of forming the same shape using a flat plate emboss, or a method of forming using a release paper. However, the method using flat emboss is not suitable for mass production.
- the height difference of the uneven part is substantially limited to about 200 to 300 m, and the sharpness of the uneven part formation tends to be insufficient near the limit.
- a large pressing force is required, so that the texture tends to be harder. Therefore, among these methods, the method of shaping with an embossing wrench is a more preferable method.
- a predetermined concave portion is provided by using an embossing roll
- it can be performed by appropriately setting the conditions of the grain depth of the roll to be used and the temperature, pressure, and time of the roll. These conditions are not particularly limited, but the roll grain depth is 80 to: L 100 m, the roll temperature is 150 to 180 ° C, the press pressure is 5 to 50 kgZcm, and the time is 10 to 120 seconds. The depth of the embossing can be obtained.
- the surface shape of a ball used in a ball game such as a basketball needs to be in such a state that at least a projection touches a fingertip when a player randomly grabs the ball. Therefore, as the shape of the ball surface, the convex portion and the concave portion formed adjacent thereto are formed.
- the height difference is 50 to: LOOO ⁇ m, and more preferably 70 to 500 ⁇ m. If the height difference is less than 50 m, good non-slip properties cannot be obtained because the force of the fingertips is evenly distributed on the ball surface when the ball is gripped by the palm. If the height difference exceeds 1000 / zm, the non-slip property will be good, and the wear resistance when used as a force ball will decrease.
- the “height difference between the convex portion and the concave portion” is a height difference between the highest portion of the convex portion and the deepest portion of the hemispherical concave portion adjacent to the convex portion, which is measured by a cross-sectional photograph.
- the average of the measured values at 10 points is ⁇ ⁇ .
- Vertical projected areas of the hemispherical recesses in the [0033] sheet of this invention is 3 to 30 mm 2, preferably 5 to 20 mm 2.
- the vertical projection area exceeds 30 mm 2 , the non-slip property is good, but the wear resistance when used as a ball is reduced. If it is less than the vertical projected area force S 3 mm 2, when gripping the ball with the palm, increased number number of recesses for gripping by a single fingertip, since the finger force is uniformly distributed on the surface of the ball, good Non-slip property cannot be obtained.
- the “vertical projected area of the concave portion” is the force of the hemispherical concave portion observed in the cross section of the sheet-like material.
- the part is defined as the boundary between the concave part and the convex part, or if there is a corner, the part is defined as the boundary between the concave part and the convex part, and the concave side area surrounded by the boundary is projected perpendicularly to the surface of the sheet-like object. Refers to the area.
- the total area of the vertical projection area of the concave portion is preferably 30 to 60%, more preferably 40 to 50%, as a ratio to the surface area of the sheet. If the ratio of the total area of the recesses is less than 30%, when the ball is gripped by the palm, the area and the number of the recesses gripped by one fingertip are reduced, so that it may be difficult to obtain good non-slip properties. On the other hand, if it exceeds 60%, the non-slip property is good, but the wear resistance when used as a ball may decrease.
- the ratio of the total area of the vertical projection area of the concave portion to the sheet surface area is determined by measuring the vertical projection area of the hemispherical concave portion with an electron microscope and calculating the ratio per unit area.
- the shape of the recess is hemispherical.
- the “hemisphere” does not mean that it is a complete hemisphere, but means that the approximate shape is a hemisphere.
- the "hemispherical" shape of the present invention is formed by cutting at a plane that does not pass through the center of the sphere. The smaller the volume, the more preferred the three-dimensional shape.
- the average distance between the hemispherical concave portions of the present invention needs to be 0.5 to 3 mm. When it is less than 0.5 mm, the concave portions are too close to each other, and the shape of the convex portions is partially too sharp, so that the softness, cushioning property, tactile sensation, and surface wear strength are inferior. If it exceeds 3 mm, the fit and non-slip properties will be poor.
- the average distance between the recesses is preferably l to 2 mm.
- the "average distance between concave portions” is an average value obtained by photographing the surface with an electron microscope, selecting 10 arbitrary concave portions, and measuring the shortest distance between adjacent concave portions based on the outer periphery of the concave portion. . If the concave portions are all curved as described above, the portion that forms an angle of 45 ° with the perpendicular to the sheet surface is defined as the boundary between the concave portion and the convex portion, or if there is an angle, the portion is defined as the boundary between the concave portion and the convex portion. , The portion surrounded by the boundary line is defined as the outer periphery.
- the coloring process is preferably performed before embossing in consideration of the possibility of discoloration due to force embossing before and after the embossing.
- a pigment having a high heat resistance, light resistance and friction fastness is the best.
- the method for treating the coloring agent include a gravure method, a dyeing method, a reverse coating method, a direct coating method, and the like.
- the gravure method is most suitable in consideration of productivity, cost, and the like.
- the sheet-like material of the present invention has a color tone different from that of a continuous convex portion having a hemispherical concave portion, and has a stronger gloss than the convex portion, so that the appearance becomes excellent in a three-dimensional effect.
- a means for imparting a color tone different from that of the convex portion to the concave portion a method of forming a desired uneven shape on the surface of the sheet, and then selectively applying a resin having a color tone different from that of the concave portion to the convex portion is used. Specifically, a transfer method using a gravure roll is preferred.
- ink obtained by adding a small amount of carbon black to the ink previously used for coloring and changing the color tone in the blackish direction is transferred only to the convex portions by a gravure method, and dried to form concave portions into convex portions.
- the ink containing the matting agent but not the colorant is transferred only to the convex parts by the gravure method, and dried to weaken the gloss of the convex parts and emphasize the gloss of the concave parts be able to.
- non-slip properties can be further enhanced as necessary.
- non-slip resins include resin obtained by homopolymerizing or block copolymerizing rubber monomers such as butadiene and isoprene, acrylic polymers obtained by homopolymerizing or block copolymerizing acrylic monomers, and solvent-type polymers such as urethane polymers.
- Emulsion-type polymers are preferred and other types of polymers are incorporated into the resins that give them non-slip properties.
- a known tackifier such as polyterpene resin or petroleum hydrocarbon resin may be added to the non-slip resin. It is also possible to adjust the non-slip property by adding inorganic or organic particles or powder. Furthermore, the use of softeners, fillers, anti-aging agents, etc. will not reduce the frictional resistance of the surface! ⁇ ⁇ ⁇ ⁇ If it is within the range, it may be added to the surface resin.
- Various methods can be used as a method of coating the convex portions on the surface of the sheet-like material with the non-slip resin.
- the method may be selected.
- a method of applying the liquid is preferably used.
- a method for covering not only the convex portions but also the concave portions with the non-slip resin a method of applying the resin to the entire surface is used.
- a uniform thickness is applied to the entire surface by spray coating, knife coating, etc. Method, process paper, etc. Apply resin to the entire surface of the base material to form a film, bond it to the base layer via an adhesive layer, extrude mechanically Extrude uniformly onto the base layer through a die to form a film on the surface
- the sheet-like material of the present invention has a hemispherical concave portion that is substantially continuous with the surface of the sheet and has a different color tone from the convex portion and has a higher gloss than the convex portion. While having an excellent three-dimensional appearance, it has sufficient surface wear strength as a surface material for ball balls, and has excellent cushioning properties that can reduce the impact on the fingertip when catching the ball. In addition, it also has an excellent non-slip property which is exerted when the fingertip and the three-dimensional shape of the ball surface formed by the convex portion and the concave portion are engaged. For this reason, it is used on surfaces such as grip tape, handles, hanging leather, handrails, etc. that cover the grip part of balls, rackets, etc., which can be directly touched by hands such as basketball.
- abrasion resistance tests assuming collisions with the ground such as non-slip properties, cushioning properties, and dribbling, were evaluated as follows.
- the sea-island composite fiber obtained by melt-mixing and spinning the two components is drawn. , Crimp and cut to obtain 4. Odtex, staple with cut length 5 lmm. This staple was passed through a card to form a web by a cross wrapper method, and a predetermined number of webs were laminated. Then needle in needle stick density of 980PZcm 2 using with felt needles Pabu of 1 point - to obtain an Dorupanchi to basis weight 450 g, of m 2 nonwoven fabric.
- the nonwoven fabric is heated, dried and pressed to smooth the surface, then impregnated with a 16% solution of polyether-based polyurethane in dimethylformamide (hereinafter abbreviated as DMF), and the polyurethane is coagulated in a porous state with a DMF aqueous solution.
- DMF dimethylformamide
- the polyethylene in the composite fiber is extracted and removed with hot toluene, and the 6-nylon ultrafine fiber and the porous polyurethane force are used.
- Artificial leather-like fiber with a thickness of 1.2 mm A substrate was obtained.
- a 40% OgZm 2 solution of a 20% solids DMF solution of polyether polyurethane (MP-105, manufactured by Dainippon Ink and Sankei Kogyo Co., Ltd.) was applied to the surface of this artificial leather-like fiber base material by knife coating. Then, the polymer was solidified in a porous state in a DMF aqueous solution to form a polymer surface layer which became a porous surface layer.
- MP-105 polyether polyurethane
- one recess projected area of the recess of the vertical top direction force to the sheet surface is also substantially similar to a size, their average value is 7 mm 2, the average distance between concave portions 1 .5 mm, and the proportion of the total projected area of the concave portions was 40% of the total projected area of the sheet.
- the upper surface of the obtained convex portion was subjected to a gravure method using an ether-based polyurethane ink in which the color tone was changed in the blackish direction by adding a trace amount of carbon black to the ink previously used for coloring.
- the convex portion is colored to a color different from that of the concave portion by transferring and drying only, the ether polyurethane ink containing a matting agent and not containing a coloring agent is transferred to the convex portion only by the gravure method and dried.
- the concave part is made stronger and the gloss is emphasized.
- Nosket balls using the sheet-like material having the leather-like appearance and texture obtained as described above as a surface material were produced.
- This basketball has an excellent three-dimensional appearance in which the three-dimensional shape due to the unevenness of the surface is emphasized by the difference in gloss and color tone between the convex part and the concave part, and a high-grade appearance. Due to the three-dimensional shape being hooked on the fingertip, the non-slip property was superior to the conventional basketball (Comparative Example 1). Also, compared to conventional basketball, the impact received on the fingertip when catching the ball is greatly reduced, and it is not only for adults but also for children with undeveloped fingertips. Was a ball with the strength and strength that could not be realized.
- DMF solution solid content concentration of polycarbonate-based polyurethane (Seiko Kasei Co., Ltd., U 5861) as a resin that imparts non-slip properties to the protrusions on the surface of the sheet-like material after coloring the tops of the protrusions produced in Example 1 7%) was applied in two steps using a 150 mesh gravure roll, and then dried at 130 ° C.
- a nosket ball was produced from the sheet thus obtained in the same manner as in Example 1, and when used, it had the same three-dimensional appearance and cushioning properties as in Example 1, and was further superior to Example 1.
- the ball had a non-slip property and was generally more suitable for use in children who have a weaker grip than adults.
- Example 3 The height difference between the continuous convex portion and the adjacent hemispherical concave portion is almost the same at any location, the average value is 80 m, and the vertical projection area of the concave portion, that is, the sheet surface
- the projected area of the concave part with the upper surface force perpendicular to the plane is almost the same size for all the concave parts, the average value is 4 mm2, the average distance between the concave parts is 2.5 mm, and the projected area of the concave part is A sheet was obtained in the same manner as in Example 1, except that the ratio of the total area to the total area was set to 31% of the projected area of the entire sheet.
- Example 2 a basketball using the obtained sheet-like material having a leather-like appearance and texture as a surface material was produced and used in a basketball game.
- the protrusion has a superior non-slip property due to the hooking force of the projection compared to the conventional basketball (Comparative Example 1), and the cushion of the projection has a better cushioning property than the conventional basketball.
- the impact on the fingertips during playing is greatly reduced, and it is a ball that has the strength and strength that cannot be realized in conventional basketball not only for adults but also especially for children with undeveloped fingertips. Was.
- good non-slip properties were maintained even after long-term use.
- the height difference between the continuous convex part and the adjacent hemispherical concave part is almost the same at any place, the average value is 850 m, and the vertical projection area of the concave part, that is, the sheet a recess projected area of all recesses be of substantially the same magnitude of the vertical top direction to the surface, is its mean value is 25 mm 2, except that the average distance between concave and 0. 7m m, A sheet was obtained in the same manner as in Example 1.
- Example 1 the shape used for a general basket pole as a concavo-convex pattern provided by an embossing roll, that is, a hemispherical projection having a diameter of about 1.8 mm and a height difference of about 200 / zm was 0.5 mm.
- the treatment was carried out under the same conditions except that an embossing roll was used, which provided a large number of sheets adjacent to each other at approximately intervals and having a substantially continuous sheet shape having no projections.
- Example 1 When a basketball having the obtained sheet on the surface was prepared and used, the ball had a conventional force different from that of Example 1. Although it had a familiar three-dimensional appearance, it was inferior to Example 1 in cushioning properties and caught the ball. The ball is a level that is unsuitable for children, and is more slippery than that of Example 1, which is usable for adults whose impact on the fingertip is large.
- Example 2 The processing was performed in the same manner as in Example 1 except that ink having a different color tone and gloss from the concave portions was not applied to the continuous convex portions on the sheet surface.
- ink having a different color tone and gloss from the concave portions was not applied to the continuous convex portions on the sheet surface.
- Example 2 The processing was performed under the same conditions as in Example 1 except that the embossing speed was set to 4 mZmin, the height difference from the concave portion adjacent to the continuous convex portion was set to 30 m, and the vertical projection area was set to 2.5 mm 2 .
- the embossing speed was set to 4 mZmin
- the height difference from the concave portion adjacent to the continuous convex portion was set to 30 m
- the vertical projection area was set to 2.5 mm 2 .
- Example 1 The processing was performed under the same conditions as in Example 1 except that the vertical projection area of the concave portion existing adjacent to the continuous convex portion was set to 50 mm 2 .
- the cushioning was excellent.
- the results of the wear resistance test assuming a collision with the ground such as force dribbling were clearly inferior to those of Example 1. Practically problematic Level, and it was slippery compared to Example 1.
- the treatment was performed under the same conditions as in Example 1 except that the average interval between the concave portions of the concave portions existing adjacent to the continuous convex portions was set to 0.4 mm.
- the non-slip property was good, but the softness, the tackiness and the tactile sensation were poor, and the abrasion resistance assuming collision with the ground such as dribbling
- the test results were at a practically problematic level.
- Example 2 The treatment was performed under the same conditions as in Example 1 except that the average interval between the concave portions adjacent to the continuous convex portions was 3.7 mm.
- the result of the abrasion resistance test assuming a collision with the ground such as dribbling was a level at which there was no problem in practical use, and the softness was good. However, it was inferior in fit and non-slip properties, and slippery as compared with Example 1.
- the processing was performed under the same conditions as in Example 1 except that the shape of the concave portion existing adjacent to the continuous convex portion was cylindrical.
- a nosket ball with the obtained sheet on the surface was prepared and used, it had good non-slip properties.It had poor softness, cushioning and tactile sensation, and abrasion resistance assuming collision with the ground such as dribbling.
- the test results were at a practically problematic level.
- the processing was performed under the same conditions as in Example 1 except that the shape of the outer periphery of the concave portion existing adjacent to the continuous convex portion was made hexagonal.
- the non-slip property was good, but the softness, cushioning and tactile sensation were poor, and a wear resistance test was performed assuming a collision with the ground such as dribbling. The result was at a practically problematic level.
- the sheet-like material of the present invention includes a ball such as a basketball, a handball, a rugby ball, an American football and the like, which is directly touched by a hand, a tennis racket, a nodington race and the like. It can also be suitably used for grip tapes for various rackets such as a ket, surface handles for vehicle handles, hanging leather, stair railings, and the like.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006512061A JP4691021B2 (ja) | 2004-04-09 | 2005-04-01 | クッション性、ノンスリップ性に優れたシート状物 |
EP05727750.1A EP1738807B1 (en) | 2004-04-09 | 2005-04-01 | Sheet material excelling in cushion and nonslip properties |
US11/578,104 US8133570B2 (en) | 2004-04-09 | 2005-04-01 | Sheet material excelling in cushion and nonslip properties |
KR1020067020911A KR101158135B1 (ko) | 2004-04-09 | 2005-04-01 | 쿠션성, 논슬립성이 뛰어난 시트상 물질 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-115488 | 2004-04-09 | ||
JP2004115488 | 2004-04-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005097268A1 true WO2005097268A1 (ja) | 2005-10-20 |
Family
ID=35124864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/006494 WO2005097268A1 (ja) | 2004-04-09 | 2005-04-01 | クッション性、ノンスリップ性に優れたシート状物 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8133570B2 (ja) |
EP (1) | EP1738807B1 (ja) |
JP (1) | JP4691021B2 (ja) |
KR (1) | KR101158135B1 (ja) |
CN (1) | CN100525866C (ja) |
TW (1) | TWI350767B (ja) |
WO (1) | WO2005097268A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008013177A1 (fr) | 2006-07-26 | 2008-01-31 | Kuraray Co., Ltd. | Objet de type feuille pour une balle, et balle |
JP2010284328A (ja) * | 2009-06-11 | 2010-12-24 | Teijin Cordley Ltd | ボール用表皮材 |
JP2012533450A (ja) * | 2009-07-16 | 2012-12-27 | ダウ グローバル テクノロジーズ エルエルシー | ポリオレフィン系人工皮革 |
WO2015136921A1 (ja) * | 2014-03-12 | 2015-09-17 | セーレン株式会社 | ヌバック調シート状物およびその製造方法 |
WO2024024582A1 (ja) * | 2022-07-28 | 2024-02-01 | オカモト株式会社 | 合成樹脂レザー及びその製造方法 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009016287B3 (de) * | 2009-04-03 | 2010-11-04 | Adidas Ag | Ball |
TWI551365B (zh) * | 2012-05-09 | 2016-10-01 | Perfection Mighty Ind Co Ltd | The use of recyclable side material or waste materials to produce environmentally friendly substrate method |
CN103550919A (zh) * | 2013-11-05 | 2014-02-05 | 泸州市慧江机械制造有限公司 | 网球 |
US9802082B1 (en) | 2014-08-28 | 2017-10-31 | Christopher J. Calandro | Textured sports ball |
US11097164B2 (en) * | 2019-10-10 | 2021-08-24 | Wilson Sporting Goods Co. | Basketball having improved pebbled texture |
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US4991842A (en) | 1989-09-08 | 1991-02-12 | Finley Charles O | Grip enhanced basketball |
US5518234A (en) | 1994-05-03 | 1996-05-21 | Palmquist; Marvin E. | Game ball |
JPH1193081A (ja) | 1997-09-16 | 1999-04-06 | Kuraray Co Ltd | 表面物性に優れた立体感のある合成皮革 |
US6024661A (en) | 1997-10-28 | 2000-02-15 | Wilson Sporting Goods Co. | Sweat-absorbing game ball |
JP2000102629A (ja) | 1998-09-30 | 2000-04-11 | Teijin Ltd | 皮革様シートおよびそれからなる球技ボール用構造物 |
JP2000273769A (ja) * | 1999-03-25 | 2000-10-03 | Teijin Ltd | 長繊維不織布およびそれを含む人工皮革 |
JP2000328465A (ja) * | 1999-05-12 | 2000-11-28 | Kuraray Co Ltd | ボール用皮革様シート |
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USRE14832E (en) * | 1920-03-30 | saunders | ||
US3256019A (en) * | 1962-12-11 | 1966-06-14 | Voit Rubber Corp | Ball with cushioning means between cover and core |
US4000894A (en) * | 1975-06-23 | 1977-01-04 | Pepsico, Inc. | Game ball |
US5091265A (en) * | 1991-02-19 | 1992-02-25 | Lisco, Inc. | Coating compositions for game balls |
CA2151781A1 (en) * | 1994-10-13 | 1996-04-14 | Derrick K. Brantley | Football with polyurethane cover |
CN2287982Y (zh) * | 1997-02-17 | 1998-08-19 | 高等股份有限公司 | 球体 |
US6159581A (en) * | 1997-09-24 | 2000-12-12 | Kuraray Co., Ltd. | Leather-like sheet |
CN2362531Y (zh) * | 1998-07-23 | 2000-02-09 | 王星威 | 结构改良的运动球 |
JP4259893B2 (ja) * | 2003-03-18 | 2009-04-30 | 帝人コードレ株式会社 | ボール用表皮材及びその製造方法 |
JP4691022B2 (ja) * | 2004-04-09 | 2011-06-01 | 株式会社クラレ | ボール |
-
2005
- 2005-04-01 EP EP05727750.1A patent/EP1738807B1/en not_active Expired - Fee Related
- 2005-04-01 WO PCT/JP2005/006494 patent/WO2005097268A1/ja active Application Filing
- 2005-04-01 CN CNB2005800122582A patent/CN100525866C/zh not_active Expired - Fee Related
- 2005-04-01 US US11/578,104 patent/US8133570B2/en not_active Expired - Fee Related
- 2005-04-01 JP JP2006512061A patent/JP4691021B2/ja active Active
- 2005-04-01 KR KR1020067020911A patent/KR101158135B1/ko not_active IP Right Cessation
- 2005-04-07 TW TW094110947A patent/TWI350767B/zh not_active IP Right Cessation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US4991842A (en) | 1989-09-08 | 1991-02-12 | Finley Charles O | Grip enhanced basketball |
US5518234A (en) | 1994-05-03 | 1996-05-21 | Palmquist; Marvin E. | Game ball |
JPH1193081A (ja) | 1997-09-16 | 1999-04-06 | Kuraray Co Ltd | 表面物性に優れた立体感のある合成皮革 |
US6024661A (en) | 1997-10-28 | 2000-02-15 | Wilson Sporting Goods Co. | Sweat-absorbing game ball |
JP2000102629A (ja) | 1998-09-30 | 2000-04-11 | Teijin Ltd | 皮革様シートおよびそれからなる球技ボール用構造物 |
JP2000273769A (ja) * | 1999-03-25 | 2000-10-03 | Teijin Ltd | 長繊維不織布およびそれを含む人工皮革 |
JP2000328465A (ja) * | 1999-05-12 | 2000-11-28 | Kuraray Co Ltd | ボール用皮革様シート |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008013177A1 (fr) | 2006-07-26 | 2008-01-31 | Kuraray Co., Ltd. | Objet de type feuille pour une balle, et balle |
US8092324B2 (en) | 2006-07-26 | 2012-01-10 | Kuraray Co., Ltd. | Sheet-like object for ball and ball |
JP2010284328A (ja) * | 2009-06-11 | 2010-12-24 | Teijin Cordley Ltd | ボール用表皮材 |
JP2012533450A (ja) * | 2009-07-16 | 2012-12-27 | ダウ グローバル テクノロジーズ エルエルシー | ポリオレフィン系人工皮革 |
WO2015136921A1 (ja) * | 2014-03-12 | 2015-09-17 | セーレン株式会社 | ヌバック調シート状物およびその製造方法 |
JPWO2015136921A1 (ja) * | 2014-03-12 | 2017-04-06 | セーレン株式会社 | ヌバック調シート状物およびその製造方法 |
WO2024024582A1 (ja) * | 2022-07-28 | 2024-02-01 | オカモト株式会社 | 合成樹脂レザー及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
TW200603862A (en) | 2006-02-01 |
JPWO2005097268A1 (ja) | 2008-02-28 |
CN1946461A (zh) | 2007-04-11 |
US8133570B2 (en) | 2012-03-13 |
US20070232165A1 (en) | 2007-10-04 |
TWI350767B (en) | 2011-10-21 |
EP1738807B1 (en) | 2013-10-23 |
CN100525866C (zh) | 2009-08-12 |
KR101158135B1 (ko) | 2012-06-19 |
JP4691021B2 (ja) | 2011-06-01 |
EP1738807A4 (en) | 2010-10-27 |
EP1738807A1 (en) | 2007-01-03 |
KR20070007135A (ko) | 2007-01-12 |
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