WO2003048439A1 - Sheet for leaching - Google Patents
Sheet for leaching Download PDFInfo
- Publication number
- WO2003048439A1 WO2003048439A1 PCT/JP2002/012755 JP0212755W WO03048439A1 WO 2003048439 A1 WO2003048439 A1 WO 2003048439A1 JP 0212755 W JP0212755 W JP 0212755W WO 03048439 A1 WO03048439 A1 WO 03048439A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nonwoven fabric
- leaching
- fiber
- sheet
- melting
- Prior art date
Links
- 238000002386 leaching Methods 0.000 title claims abstract description 62
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 111
- 239000000835 fiber Substances 0.000 claims abstract description 107
- 238000009826 distribution Methods 0.000 claims abstract description 43
- 238000002844 melting Methods 0.000 claims abstract description 38
- 230000008018 melting Effects 0.000 claims abstract description 31
- 229920002994 synthetic fiber Polymers 0.000 claims abstract description 19
- 239000012209 synthetic fiber Substances 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 15
- 239000011148 porous material Substances 0.000 claims description 35
- 238000010586 diagram Methods 0.000 claims description 11
- 229920000728 polyester Polymers 0.000 claims description 10
- 239000002344 surface layer Substances 0.000 claims description 4
- 239000011162 core material Substances 0.000 claims 1
- 239000011800 void material Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 12
- 239000012633 leachable Substances 0.000 description 11
- 244000269722 Thea sinensis Species 0.000 description 10
- -1 polyethylene terephthalate Polymers 0.000 description 10
- 239000002994 raw material Substances 0.000 description 9
- 229920003002 synthetic resin Polymers 0.000 description 9
- 239000000057 synthetic resin Substances 0.000 description 9
- 238000007789 sealing Methods 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 6
- 235000013616 tea Nutrition 0.000 description 5
- 238000004049 embossing Methods 0.000 description 4
- 240000007154 Coffea arabica Species 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 235000016213 coffee Nutrition 0.000 description 3
- 235000013353 coffee beverage Nutrition 0.000 description 3
- 235000009569 green tea Nutrition 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 241000411851 herbal medicine Species 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 235000006468 Thea sinensis Nutrition 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 235000020279 black tea Nutrition 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
- D04H5/06—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by welding-together thermoplastic fibres, filaments, or yarns
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/06—Filters or strainers for coffee or tea makers ; Holders therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
- B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
-
- 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
- B32B27/02—Layered products comprising a layer of synthetic resin in the form of fibres or filaments
-
- 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
-
- 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
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- 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
- B32B5/02—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 structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
-
- 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
- B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/027—Thermal properties
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H13/00—Other non-woven fabrics
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/009—Condensation or reaction polymers
- D04H3/011—Polyesters
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/244—All polymers belonging to those covered by group B32B27/36
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
-
- 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
- B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
Definitions
- the present invention relates to a leaching sheet used for extracting leaching materials such as black tea, coffee, green tea, and herbal medicine.
- Leaching sheets used to extract leachable raw materials such as tea, coffee, green tea, and herbal medicines are required to have good leachability of the extract, and are used in the form of tea bags.
- the sheet is required to have bag-making properties, that is, to be able to easily make bags using a heat sealing machine.
- a leaching sheet a nonwoven fabric made of synthetic fiber, which has low water absorption of the fiber itself and high leaching property, has been used.
- a leaching sheet suitable for bag making a leached sheet made of a high-melting polyester fiber spunbonded nonwoven fabric and a low-melting polyester fiber laid nonwoven fabric is known. (Made by Taiki Shoji Co., Ltd., full veil).
- the two leaching sheets are overlapped with the low-melting-point carded nonwoven fabric inside, and
- the heat seal can be easily performed without fusing the fibers to the heating head of the heat seal machine.
- the fiber of the carded nonwoven fabric is determined by the carding machine. Since it is not oriented in a specific direction and is not uniformly dispersed in the random direction, the pore size distribution of voids in the nonwoven fabric is wide. Therefore, if the basis weight of the leaching sheet is adjusted so as to obtain a preferable flow rate, the fine powder of the leaching material may pass through the leaching sheet, and To completely prevent the passage of fine powder, there was a problem that the flow rate was extremely reduced.
- the present invention is to prevent a portion having a low seal strength from being generated in a seal portion even when a seal width is reduced in a leaching sheet having a bag-making property.
- the purpose of the present invention is to prevent the passage of fine powder of leachable raw material while maintaining a preferable flow rate when extracting leachable raw material. Disclosure of the invention
- the inventor of the present invention has disclosed that in a leaching sheet in which a high-melting-point nonwoven fabric and a low-melting-point nonwoven fabric are laminated, a low-melting-point nonwoven fabric is deposited by randomly dispersing short fibers in a dry manner, and the intersections thereof are thermally bonded to each other.
- the short fibers are uniformly dispersed in random directions, so that the heat seal can be performed with uniform strength in any part of the nonwoven fabric, and the pore size distribution of the voids in the nonwoven fabric is extremely high. Concentrates on a narrow area, resulting in a hole with an excessively large pore size It has been found that there are no gaps, and it is possible to prevent the passage of the fine powder of the leachable raw material during extraction of the leachable raw material.
- the present invention provides a long-fiber non-woven fabric having a basis weight of 5 to 30 g / m 2 , at least part of which is composed of synthetic fibers of a high melting point resin.
- Short-fiber nonwoven fabric consists of fibers with a fiber length of 3 to 15 mm, which are dry-dispersed and deposited in a random manner and heat-bonded to each other.
- the distribution rate of the largest peak is at least 10 times the distribution rate of the other peaks.
- FIG. 1 is a sectional view of a leaching sheet of the present invention.
- FIG. 2 is a photograph showing the orientation of the fibers of the airlaid nonwoven fabric (a) and the card nonwoven fabric (b).
- FIG. 3 is an explanatory diagram of a seal strength test method.
- FIG. 4 is a pore size distribution diagram of voids in the leaching sheet of Example 1.
- FIG. 5 is a pore size distribution diagram of voids in the leaching sheet of Comparative Example 1.
- FIG. 6 is a pore size distribution diagram of voids in the leaching sheet of Comparative Example 2.
- FIG. 7 is a pore size distribution diagram of voids in the leaching sheet of Example 2.
- FIG. 8 is a pore size distribution diagram of voids in the leaching sheet of Example 2.
- FIG. 9 is a pore size distribution diagram of voids in the leaching sheet of Example 2.
- FIG. 10 is a pore size distribution diagram of voids in the leaching sheet of Example 2. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 shows a leaching sheet 1 according to one embodiment of the present invention, which has a laminated structure of a long-fiber nonwoven fabric 2 and a short-fiber nonwoven fabric 3.
- the long-fiber nonwoven fabric is formed of at least a part of synthetic fiber of a high-melting-point resin, and preferably at least a part of synthetic fiber of a high-melting-point resin having a melting point of 170 ° C. or more.
- forming a long-fiber nonwoven fabric from a synthetic fiber of a high-melting-point resin having a melting point of at least 170 ° C. means that the synthetic fiber forming the long-fiber nonwoven fabric has a melting point of at least 170 ° C.
- fibers having a core-sheath structure composed of a synthetic resin having a melting point of 170 ° C. or higher.
- Examples of the synthetic resin having a melting point of 170 ° C or higher include high-melting-point polyester (high-melting-point polyethylene terephthalate: melting point of 24.5 ° C) and polyamide (Nylon 6 6: Melting point: 245 ° C), polyphenylsulfide (melting point: 290 ° C), polylactic acid (melting point: 178 ° C).
- the fiber diameter of the synthetic fibers forming the long-fiber nonwoven fabric is preferably 3 m or less from the viewpoint of the basis weight stability of the nonwoven fabric.
- a melt blow or the like can be used, but a spun bond is preferred because it does not cause clogging and obtains high strength.
- the basis weight of the long fiber nonwoven fabric and 5 ⁇ 3 0 g Z m 2. 5 g in weight If it is less than / m 2 , the strength is insufficient, and if it exceeds 30 g Z m 2 , the leachability and mechanical aptitude are inferior.
- the short-fiber nonwoven fabric is a synthetic fiber of at least a part of a low-melting-point resin, preferably at least a melting point of at least 80 ° C and less than 170 ° C. Formed from synthetic resin fibers.
- the heat-sealing can be easily performed by superposing the two sheets for leaching with the short fiber nonwoven fabric inside and applying the sheet to a heat-sealing machine.
- a short fiber nonwoven fabric composed of a synthetic fiber of a low melting point resin having a melting point of at least 80 ° C or more and less than 170 ° C means that the synthetic fiber forming the short fiber nonwoven fabric has a melting point of at least 8 ° C.
- the fiber forming the long-fiber nonwoven fabric and the fiber forming the short-fiber nonwoven fabric be the same type of resin.
- the resin of the surface layer (sheath) is of the same type.
- Examples of the synthetic resin having a melting point of 80 ° C or higher and lower than 170 ° C include low-melting-point polyester (low-melting-point polyethylene terephthalate, melting point of 100 to 160 :), and poly- mer. Ethylene (melting point 90-: 140.C), polypropylene (melting point 160-168 ° C) and the like can be mentioned.
- Examples of the fiber having a core-sheath structure include a core-sheath made of high-melting polyester, low-melting polyester, high-melting polyester / polyethylene, or polyethylene. Propylene z polyethylene etc. can be mentioned.
- the synthetic fiber forming the short-fiber nonwoven fabric has a fiber length of 3 to 15 mm, preferably 5 to 7 mm. If the fiber length is too short, the strength of the nonwoven fabric decreases, the fiber density increases, and the liquid passing speed decreases. On the other hand, if the fiber length is too long, it becomes difficult for the fibers to be uniformly dispersed.
- the fiber diameter of the synthetic fibers forming the short-fiber nonwoven fabric depends on the pore size distribution to be applied to the leaching sheet depending on the leachable raw material. When used for one bag, it is preferably 0.1 to 3.0 d (denier), and more preferably 0.5 to 2.0 d. If the fiber diameter is too small, the pore diameter of the nonwoven fabric becomes small, and the liquid passing speed becomes slow. Conversely, if the fiber diameter is too large, fine powder of leachable raw materials such as tea leaves will pass through the nonwoven fabric, and the extract will have poor mouth feel and appearance.
- a web is first formed by randomly dispersing and depositing fibers in a dry manner, and then the intersections of the fibers are thermally bonded to each other. This is formed. More specifically, a web is formed by an air raid method, and the web is heat-treated with an emboss roll, a flat roll, or the like.
- the fibers are dispersed in the random direction at a uniform thickness. Even if this web is heat-treated with an embossing roll or the like, the uniformity of fiber dispersion is not impaired. Therefore, the short-fiber nonwoven fabric thus formed concentrates on a narrow range of the pore size distribution, and the pore size and its distribution rate
- the distribution ratio of the largest peak is more than 10 times the distribution ratio of the other peaks, and the distribution of the pore size is preferably smaller than that of the other peaks. It has a single peak below 100 ⁇ ⁇ , particularly preferably below 50 m.
- the pore size distribution It is measured by the point method (JISK 3822).
- the pore size distribution of the short-fiber nonwoven fabric thus formed can be sharply controlled by adjusting the fiber diameter and the basis weight.
- the nonwoven fabric in which the fibers are dispersed in the random direction can be obtained by a papermaking method, which is a wet method, but the airlaid method is preferred from the viewpoint of productivity.
- the long-fiber nonwoven fabric and the short-fiber nonwoven fabric are separately formed, and then both are superposed and heat-treated with an embossing roll, a flat roll, or the like.
- a web forming a short-fiber non-woven fabric may be formed on a long-fiber non-woven fabric, and then heat-treated with an embossing roll, a flat roll, or the like to form a short-fiber non-woven fabric.
- the nonwoven fabric of the nibs and the lamination of the short fiber nonwoven fabric and the long fiber nonwoven fabric may be simultaneously performed.
- the low-melting short-fiber nonwoven fabric and the high-melting long-fiber nonwoven fabric are laminated, and the pore size distribution of the short-fiber nonwoven fabric is concentrated in a narrow range as described above. Since the long fiber nonwoven fabric has a coarse pore size, the pore size distribution of the entire leaching sheet can be found from the pore size distribution diagram showing the relationship between the pore size and the distribution rate (%). And the distribution ratio of the other peaks is 10 times or more, preferably, the pore size distribution is 100 ⁇ m or less in variation width, particularly preferably 50 ⁇ or less in a single peak. It becomes what has.
- the leaching sheet of the present invention is extremely useful as a sheet material for forming a tea bag of leaching materials such as black tea, coffee, green tea, and herbal medicine.
- the leaching sheet of the present invention has a laminated structure of a long-fiber non-woven fabric 2 and a short-fiber non-woven fabric 3 and, if necessary, other woven fabrics.
- a nonwoven fabric or the like may be laminated.
- an adhesive nonwoven fabric can be provided between the long-fiber nonwoven fabric and the short-fiber nonwoven fabric in order to increase the adhesive strength.
- the core / sheath is made of high-melting-point polyethylene terephthalate low-melting-point polyethylene terephthalate core-sheath structured fibers (fiber diameter 1.0 d, fiber length 5 mm) to form a web by the airlaid method.
- An air-laid nonwoven fabric was produced by applying a heat roll, while a carded nonwoven fabric was produced using similar fibers. Then, a sample of 9.0 cm ⁇ 6.0 cm and a sample of 100 cm ⁇ 100 cm were cut out from each nonwoven fabric, and the weight was measured. The results are shown in Tables 1 and 2.
- Fig. 2 (a) shows a photograph of the air-laid nonwoven fabric
- Fig. 2 (b) shows a photograph of the carded nonwoven fabric. Table 1
- Spunbonded nonwoven fabric using high melting point polyester with fiber diameter of 2.0 d The core / sheath is made of high-melting-point polyethylene terephthalate low-melting-point polyethylene terephthalate core-sheath fibers (fiber diameter 2.0 d, fiber length 5 mm).
- a web is formed by an airlaid method using an air-laid method, an embossed roll is applied, and a leaching sheet in which an air-laid nonwoven fabric (having a basis weight of 6 g Zm 2 ) is laminated on a spun-bonded nonwoven fabric (having a basis weight of 12 gm 2 ). Fabricated (Example 1).
- the card non-woven fabric is applied onto the same spun-bonded non-woven fabric (with a basis weight of 12 g / m 2 ).
- a sheet for leaching was prepared by laminating (basis weight S g Zm 2 ) (Comparative Example 1).
- a leaching sheet was produced in the same manner as in Comparative Example 1 except that the embossed shape of the embossing roll was changed (Comparative Example 2).
- Example 2
- a leaching sheet in which an airlaid nonwoven fabric was laminated on a spunbonded nonwoven fabric was prepared in the same manner as in Example 1 except that the basis weight of the airlaid nonwoven fabric was 8 g / m 2 .
- the pore size distribution of the voids in each of the leaching sheets of Example 1, Example 2, Comparative Example 1, and Comparative Example 2 was measured using a bubble porometer manufactured by PMI, a U.S.A. (JISK 3832). The results are shown in FIGS. 4 to 10.
- the leaching sheet of Example 2 was measured at four different positions in the width direction (FIGS. 7 to 10).
- the leaching sheets of Comparative Example 1 and Comparative Example 2 had a variation in the pore size distribution of 140 ⁇ m or more, and there were multiple peaks between them, whereas the leaching sheets of Example 1 had In the pore size distribution of the leaching sheet, there is a single peak between the variations of ⁇ ⁇ / xm or less, and it can be seen that the pore size distribution is concentrated there.
- the distribution rate of the largest peak was 10 times or more the distribution rate of the other peaks at any measurement points, and the pore size distribution was concentrated at the largest peak. You can see this. Industrial applicability
- seat for leaching of this invention even when a seal width
- the pore size distribution of the voids in the nonwoven fabric can be sharply controlled and preferably set to a single peak, the fine powder of the leachable raw material can be maintained while maintaining a preferable flow rate when extracting the leachable raw material. Can be prevented from passing through.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Food Science & Technology (AREA)
- Nonwoven Fabrics (AREA)
- Laminated Bodies (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
- Filtering Materials (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/495,489 US20050016382A1 (en) | 2001-12-07 | 2002-12-05 | Percolation sheet |
JP2003549613A JP4175257B2 (ja) | 2001-12-07 | 2002-12-05 | 浸出用シート |
DE60239417T DE60239417D1 (de) | 2001-12-07 | 2002-12-05 | Vlies zum laugen |
AU2002354098A AU2002354098A1 (en) | 2001-12-07 | 2002-12-05 | Sheet for leaching |
KR1020047008574A KR100951340B1 (ko) | 2001-12-07 | 2002-12-05 | 침출용 시트 |
AT02786037T ATE501292T1 (de) | 2001-12-07 | 2002-12-05 | Vlies zum laugen |
EP02786037A EP1455010B1 (en) | 2001-12-07 | 2002-12-05 | Sheet for leaching |
NO20033390A NO20033390L (no) | 2001-12-07 | 2003-07-30 | Filterbanemateriale |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPPCT/JP01/10724 | 2001-12-07 | ||
PCT/JP2001/010724 WO2003048438A1 (en) | 2001-12-07 | 2001-12-07 | Seeping sheet |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003048439A1 true WO2003048439A1 (en) | 2003-06-12 |
Family
ID=11738007
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/010724 WO2003048438A1 (en) | 2001-12-07 | 2001-12-07 | Seeping sheet |
PCT/JP2002/012755 WO2003048439A1 (en) | 2001-12-07 | 2002-12-05 | Sheet for leaching |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/010724 WO2003048438A1 (en) | 2001-12-07 | 2001-12-07 | Seeping sheet |
Country Status (10)
Country | Link |
---|---|
US (1) | US20050016382A1 (ja) |
EP (1) | EP1455010B1 (ja) |
JP (1) | JP4175257B2 (ja) |
KR (1) | KR100951340B1 (ja) |
CN (1) | CN1599816A (ja) |
AT (1) | ATE501292T1 (ja) |
AU (2) | AU2002221081A1 (ja) |
DE (1) | DE60239417D1 (ja) |
NO (1) | NO20033390L (ja) |
WO (2) | WO2003048438A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006083497A (ja) * | 2004-09-17 | 2006-03-30 | Kinsei Seishi Kk | 食品抽出用複合エアレイドシート |
JP2006083496A (ja) * | 2004-09-17 | 2006-03-30 | Kinsei Seishi Kk | 食品抽出用合繊エアレイド複合シート |
WO2007057942A1 (ja) * | 2005-11-15 | 2007-05-24 | Kinsei Seishi Co., Ltd. | 食品抽出用エアレイドシート |
JP2008266825A (ja) * | 2007-04-19 | 2008-11-06 | Unitika Ltd | ヒートシール性複合不織布 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2266791B1 (en) * | 2008-04-18 | 2015-08-12 | Ohki Co., Ltd. | Fibrous sheet |
CN104131415A (zh) * | 2014-08-07 | 2014-11-05 | 瑞法诺(苏州)机械科技有限公司 | 一种复合热风无纺布制备工艺 |
KR101777732B1 (ko) | 2014-08-27 | 2017-09-12 | 한국생산기술연구원 | 장섬유웹층을 포함하는 장섬유 부직포 예비성형체, 이의 제조방법과, 상기 장섬유 부직포 예비성형체를 포함하는 복합재료 및 이의 제조방법 |
JP7032963B2 (ja) * | 2018-03-12 | 2022-03-09 | 呉羽テック株式会社 | フィルター補強材及びこれを含む脱臭フィルター用濾材 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07133574A (ja) * | 1993-11-09 | 1995-05-23 | New Oji Paper Co Ltd | 積層不織布 |
JPH0921055A (ja) * | 1995-07-06 | 1997-01-21 | Chisso Corp | 複合化不織布及びその製造法 |
JP2002238768A (ja) * | 2001-02-21 | 2002-08-27 | Asahi Kasei Corp | 蒸らし機能付きフィルター |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0274659A (ja) * | 1988-09-06 | 1990-03-14 | Yamanaka Sangyo Kk | 積層シート |
JP3137213B2 (ja) * | 1992-08-21 | 2001-02-19 | 東洋紡績株式会社 | 抽出フイルター材料 |
JP3631262B2 (ja) * | 1993-11-11 | 2005-03-23 | 麒麟麦酒株式会社 | 飽和ポリエステル樹脂組成物からなるコンテナまたはパレット |
JP3671203B2 (ja) * | 1994-06-10 | 2005-07-13 | 小林製薬株式会社 | 杜仲茶バッグ |
JPH09271617A (ja) * | 1996-02-08 | 1997-10-21 | Kanebo Ltd | フィルター |
JPH09268434A (ja) * | 1996-03-27 | 1997-10-14 | Kuraray Co Ltd | ティ−バッグ用湿式不織布に好適な複合繊維 |
JPH1086970A (ja) * | 1996-09-18 | 1998-04-07 | Oji Paper Co Ltd | ヒートシール性を有するフィルターパック用原紙 |
JPH1143855A (ja) * | 1997-05-26 | 1999-02-16 | Unitika Ltd | 複合長繊維不織布からなる包材 |
JP4067714B2 (ja) * | 1999-09-06 | 2008-03-26 | 三井化学株式会社 | ポリオレフィン合成パルプおよびヒートシール紙 |
JP2001315239A (ja) * | 2000-05-01 | 2001-11-13 | Shinwa Kk | ヒートシール用不織布及びその製造方法 |
-
2001
- 2001-12-07 AU AU2002221081A patent/AU2002221081A1/en not_active Abandoned
- 2001-12-07 WO PCT/JP2001/010724 patent/WO2003048438A1/ja active Application Filing
-
2002
- 2002-12-05 AU AU2002354098A patent/AU2002354098A1/en not_active Abandoned
- 2002-12-05 EP EP02786037A patent/EP1455010B1/en not_active Expired - Lifetime
- 2002-12-05 KR KR1020047008574A patent/KR100951340B1/ko not_active IP Right Cessation
- 2002-12-05 JP JP2003549613A patent/JP4175257B2/ja not_active Expired - Fee Related
- 2002-12-05 US US10/495,489 patent/US20050016382A1/en not_active Abandoned
- 2002-12-05 AT AT02786037T patent/ATE501292T1/de not_active IP Right Cessation
- 2002-12-05 WO PCT/JP2002/012755 patent/WO2003048439A1/ja active Application Filing
- 2002-12-05 CN CNA028244346A patent/CN1599816A/zh active Pending
- 2002-12-05 DE DE60239417T patent/DE60239417D1/de not_active Expired - Lifetime
-
2003
- 2003-07-30 NO NO20033390A patent/NO20033390L/no not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07133574A (ja) * | 1993-11-09 | 1995-05-23 | New Oji Paper Co Ltd | 積層不織布 |
JPH0921055A (ja) * | 1995-07-06 | 1997-01-21 | Chisso Corp | 複合化不織布及びその製造法 |
JP2002238768A (ja) * | 2001-02-21 | 2002-08-27 | Asahi Kasei Corp | 蒸らし機能付きフィルター |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006083497A (ja) * | 2004-09-17 | 2006-03-30 | Kinsei Seishi Kk | 食品抽出用複合エアレイドシート |
JP2006083496A (ja) * | 2004-09-17 | 2006-03-30 | Kinsei Seishi Kk | 食品抽出用合繊エアレイド複合シート |
JP4521718B2 (ja) * | 2004-09-17 | 2010-08-11 | 金星製紙株式会社 | 食品抽出用複合エアレイドシート |
JP4539908B2 (ja) * | 2004-09-17 | 2010-09-08 | 金星製紙株式会社 | 食品抽出用合繊エアレイド複合シート |
WO2007057942A1 (ja) * | 2005-11-15 | 2007-05-24 | Kinsei Seishi Co., Ltd. | 食品抽出用エアレイドシート |
JP2008266825A (ja) * | 2007-04-19 | 2008-11-06 | Unitika Ltd | ヒートシール性複合不織布 |
Also Published As
Publication number | Publication date |
---|---|
NO20033390D0 (no) | 2003-07-30 |
AU2002221081A1 (en) | 2003-06-17 |
JP4175257B2 (ja) | 2008-11-05 |
EP1455010A4 (en) | 2005-11-16 |
KR100951340B1 (ko) | 2010-04-08 |
AU2002354098A1 (en) | 2003-06-17 |
NO20033390L (no) | 2003-09-22 |
EP1455010B1 (en) | 2011-03-09 |
EP1455010A1 (en) | 2004-09-08 |
ATE501292T1 (de) | 2011-03-15 |
CN1599816A (zh) | 2005-03-23 |
US20050016382A1 (en) | 2005-01-27 |
KR20040073456A (ko) | 2004-08-19 |
WO2003048438A1 (en) | 2003-06-12 |
JPWO2003048439A1 (ja) | 2005-04-14 |
DE60239417D1 (de) | 2011-04-21 |
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