WO2019163709A1 - 袋状フィルタ - Google Patents
袋状フィルタ Download PDFInfo
- Publication number
- WO2019163709A1 WO2019163709A1 PCT/JP2019/005851 JP2019005851W WO2019163709A1 WO 2019163709 A1 WO2019163709 A1 WO 2019163709A1 JP 2019005851 W JP2019005851 W JP 2019005851W WO 2019163709 A1 WO2019163709 A1 WO 2019163709A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bag
- yarn
- filter
- heat
- elastic yarn
- Prior art date
Links
- 239000004744 fabric Substances 0.000 claims abstract description 53
- 238000009940 knitting Methods 0.000 claims abstract description 49
- 238000001914 filtration Methods 0.000 claims abstract description 26
- 239000007787 solid Substances 0.000 claims abstract description 21
- 239000002657 fibrous material Substances 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000002699 waste material Substances 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims description 88
- 238000007789 sealing Methods 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 29
- 230000004927 fusion Effects 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 7
- 210000004177 elastic tissue Anatomy 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 description 25
- 239000004814 polyurethane Substances 0.000 description 20
- 229920002635 polyurethane Polymers 0.000 description 20
- 229920000728 polyester Polymers 0.000 description 15
- 229920002334 Spandex Polymers 0.000 description 13
- 238000009958 sewing Methods 0.000 description 13
- 239000004759 spandex Substances 0.000 description 13
- -1 polypropylene Polymers 0.000 description 12
- 239000004952 Polyamide Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 11
- 229920002647 polyamide Polymers 0.000 description 11
- 239000000843 powder Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 239000004677 Nylon Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 230000006866 deterioration Effects 0.000 description 6
- 229920001778 nylon Polymers 0.000 description 6
- 239000002826 coolant Substances 0.000 description 5
- 238000005304 joining Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 229920002994 synthetic fiber Polymers 0.000 description 5
- 239000012209 synthetic fiber Substances 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 229920000098 polyolefin Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 229910001111 Fine metal Inorganic materials 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000010730 cutting oil Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920006309 Invista Polymers 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
- B01D39/083—Filter cloth, i.e. woven, knitted or interlaced material of organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/111—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/23—Supported filter elements arranged for outward flow filtration
- B01D29/27—Filter bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/10—Patterned fabrics or articles
- D04B1/102—Patterned fabrics or articles with stitch pattern
- D04B1/106—Patterned fabrics or articles with stitch pattern at a selvedge, e.g. hems or turned welts
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/16—Other fabrics or articles characterised primarily by the use of particular thread materials synthetic threads
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/18—Other fabrics or articles characterised primarily by the use of particular thread materials elastic threads
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0609—Knitted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
- B01D2239/0668—The layers being joined by heat or melt-bonding
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/04—Heat-responsive characteristics
- D10B2401/041—Heat-responsive characteristics thermoplastic; thermosetting
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/04—Filters
Definitions
- the present invention relates to a bag-shaped filter.
- an industrial filtration apparatus that separates a solid contained in a liquid to be filtered using a bag-like filter.
- This filtration device is, for example, a coolant, a cutting fluid contained in a filtration target liquid such as a coolant, a cutting oil, a grinding fluid, or a cleaning fluid that is used for cooling, lubrication, cleaning, or the like in a machine tool. It is used to separate a solid having a predetermined size or more made of the processed powder (see, for example, Patent Document 1).
- the present inventors have developed a bag-like filter using a covering elastic yarn in such a bag-like filter (see, for example, Patent Document 2).
- a bag-like filter using a covering elastic yarn has an advantage of a long life (usable time) that is a period until clogging. That is, since clogging is difficult to occur, there is an advantage that the replacement frequency of the filter is low and the cost is low.
- the durability can be further improved and the replacement frequency can be reduced without increasing the cost.
- the speed of deterioration varies greatly depending on the part.
- due to the nature of the use as a filter even if there is no deterioration in most parts, if a specific part that is likely to be loaded is deteriorated, it cannot be used any more and needs to be replaced.
- finer solids can be captured by further reducing the gap between the stitches.
- the size of the solid matter to be captured varies depending on the purpose of use of the filter. Therefore, a filter that can capture finer particles (for example, an average particle size of 1 to 20 ⁇ m) is also required.
- an object of the present invention is to provide a bag-like filter capable of reducing the replacement frequency because it is more durable than a conventional bag-like filter without causing an increase in cost. Furthermore, it aims at providing the bag-shaped filter which can capture
- the present invention is a bag-like filter used for filtering waste liquid containing solids, It consists of a bag-like circular knitted fabric obtained by using part or all of a fiber material using elastic yarn at least in part, and has at least a double knitted portion at the bottom of the bag shape It is the bag-shaped filter characterized.
- the bag-like filter uses a covering elastic yarn at least in part.
- the width of the knitted fabric knitted at least twice is preferably in the range of 20 to 100% of the bag width.
- the present invention is a bag-like filter used for filtering waste liquid containing solids, It consists of a bag-like circular knitted fabric obtained by using part or all of a fiber material using elastic yarn at least in part, It is also a bag-like filter characterized in that a part of the used fiber material is a heat-sealing yarn.
- the elastic yarn is preferably a heat-sealed elastic yarn.
- the bag-like filter is preferably one in which a covering yarn of heat fusion elastic yarn is used at least in part. It is preferable that the bag-shaped filter uses at least a part of an aligned yarn of a heat fusion elastic yarn and a false twisted yarn.
- the bag-like filter is preferably a knitted fabric obtained by knitting a heat-sealing elastic yarn and other fibers.
- the bag-like filter is preferably one in which a heat-sealing yarn is fused by performing heat treatment after forming a bag-like shape by a knitting process.
- the 1st bag-shaped filter of this invention is excellent in durability, it can reduce replacement frequency in a filtration apparatus, and can contribute to cost reduction by this. Furthermore, the 2nd bag-shaped filter of this invention has the favorable filtration performance which can filter the solid substance with a small particle size, and can aim at the improvement of the filtration capability by this.
- the present invention is described in detail below.
- the first bag-shaped filter of the present invention is characterized in that it has at least a portion where a knitted fabric is formed at the bottom of the bag shape. That is, since the bag-shaped filter is installed in the apparatus in the vertical direction, most of the waste liquid containing solids falls on the bottom surface of the bag-shaped filter. Therefore, the load at the time of dropping is mainly applied to the filter bottom. And the filtered solid substance also tends to accumulate in a bottom part. For this reason, the load concentrates on the bottom of the bag-like filter, and as a result, deterioration from the bottom tends to occur.
- the above-mentioned problem is solved by providing a portion where the knitted fabric is knitted at least double to such a bottom portion, thereby improving the strength of the bottom portion.
- a bag-like knitted fabric obtained by using a fiber material using an elastic yarn at least in part in the present invention is because a knitted fabric using an elastic yarn is particularly excellent in stretchability.
- the ability to capture solids is very high, and even after many solids have been captured, the stitches are deformed due to the expansion and contraction of the yarn, so that the liquid can easily pass through, and the filtration capacity decreases due to the clogging of the stitches. It is because it is hard to produce.
- the bag-like circular knitted fabric obtained by using a part or all of a fiber material using an elastic yarn as at least a part of the present invention is not particularly limited, and a combination of spandex elastic yarn and other fibers is used.
- the knitted fabric (A-1) obtained by the composite fiber composite, the knitted fabric (A-2) obtained by the conjugate fiber having the elastic body as a structural unit, and the spandex yarn and other fibers were knitted. Knitted fabric (A-3) or the like can be used. Hereinafter, these will be described more specifically.
- the composite fiber here is a knitted fabric using a composite yarn in which a spandex elastic yarn is partially used and this is combined with other fibers.
- the other fibers to be combined are not particularly limited, and it is preferable to use polyamide fiber, silk, polyester fiber, cotton yarn, polyolefin fiber (for example, polypropylene fiber, polyethylene fiber) and the like.
- polyamide fiber silk, polyester fiber, cotton yarn, polyolefin fiber (for example, polypropylene fiber, polyethylene fiber) and the like.
- it is particularly preferable to use a polyester fiber or a polyamide fiber and it is most preferable to use a polyester fiber.
- the polyester fiber herein include fibers made of polyethylene terephthalate, fibers made of polybutylene terephthalate, and the like.
- the spandex elastic yarn is not particularly limited, but it is most preferable to use a polyurethane elastic yarn from the viewpoint of durability, strength, cost and the like.
- the bag-shaped filter of the present invention it is preferable to manufacture the bag-shaped filter of the present invention by manufacturing a cylindrical circular knitted fabric and closing the bottom thereof. In such a manufacturing method, it is necessary to obtain the strength of the bottom closing. In particular, since the closed portion forms a part of the bottom portion, it is a portion that is likely to be loaded during use as a filter, and is liable to cause tearing and fraying.
- the composite method of the composite yarn is not particularly limited, and any known method such as a covering yarn, an aligned yarn of an elastic yarn and a false twisted yarn can be used. Among them, it is particularly preferable to use a covering yarn obtained by winding other fibers around an elastic yarn from the viewpoint of strength, workability, and the like.
- the spandex elastic yarn constituting the covering elastic yarn is not particularly limited, and, for example, one having 5 to 510 denier can be used.
- the lower limit is more preferably 10 denier, and the upper limit is more preferably 280 denier.
- the covering yarn may be either single covering or double covering. More specifically, for example, a single covering yarn (SCY22dWN70 / 48, 50) in which an elastic yarn is covered with a high multi type (one filament is thinner than 1.2 dtex) having a large number of synthetic fibers such as polyester. / 144, 75/144, 75/72 denier / number, etc.). Moreover, the double covering yarn (DCY) which covered the thread
- the polyurethane elastic fiber generally used widely as a spandex fiber it is not limited to this, For example, you may use a polyetherester elastic fiber. Further, by covering the elastic fiber yarn with the synthetic fiber yarn, it is possible to prevent the breakage and damage of the stitches from occurring in a short time by the processed powder.
- conjugate fibers that are partially composed of elastic bodies, and these can be suitably used.
- a conjugate fiber of polyamide and polyurethane, a conjugate fiber of polyester and polyurethane, and the like can be given.
- the conjugate type of such conjugate fiber is not particularly limited, and those of side-by-side type, core-sheath type, etc. can be used.
- commercially available fibers such as Sideria (trade name) manufactured by KB Seiren Co., Ltd. can be used.
- the spandex yarn may be used as a single yarn and knitted with other fibers.
- the method of knitting is not particularly limited, and any known knitting structure can be used.
- each knitted fabric such as (A-1) to (A-3) described above, a composite fiber obtained by combining a spandex elastic yarn and other fibers and a conjugate fiber having an elastic body as a structural unit Further, two or more kinds of spandex yarns may be used in combination, or some other fibers may be used in combination.
- Other fibers are not particularly limited, and polyamide fibers, silk, polyester fibers, cotton yarns, polyolefin fibers (for example, polypropylene fibers, polyethylene fibers) and the like can be used.
- the second bag-shaped filter of the present invention is a bag-shaped filter made of a bag-shaped circular knitted fabric obtained by using part or all of a fiber material using heat-sealed yarn at least in part, Among these fibers, heat-sealing yarn is used for a part.
- the bag-like filter of the present invention is a fiber material that uses the heat-sealing yarn as a part, and by fusing a part of the stitch, it is possible to make the stitch less likely to be displaced, thereby reducing a small solid matter. Is prevented from passing through the stitches, thereby improving the filtration capacity.
- an elastic yarn may be a heat fusion elastic yarn, or a part or all of the fibers used in combination with the elastic yarn may be a heat fusion yarn. It is particularly preferable to use a heat-sealing elastic yarn in that the effects described above can be obtained more suitably.
- the heat-sealing yarn that can be used in the present invention is not particularly limited, and examples thereof include a heat-fusible polyurethane elastic yarn, a heat-fusible polyester yarn, and a heat-sealing nylon yarn.
- the heat-fusible polyurethane elastic yarn is not particularly limited, but it is preferable that the heat-sealing force when fusing at 80 ° C. under wet heat is 0.15 N / dtex or more.
- the heat-sealable polyurethane elastic yarn preferably has a yarn thickness in the range of 10 to 310 tex. If it is thinner than the above range, the surface area of the fused part becomes narrow, and there is a possibility that sufficient durability cannot be obtained. If the thickness is larger than the above range, the needle of the knitting machine may not be applied. Therefore, it is preferable.
- heat-fusible polyurethane elastic yarns commercially available products such as Mobilon KL, Mobilon R, Mobilon RL, Mobilon RLL (trade name: manufactured by Nisshinbo Textile Co., Ltd.), Lycra (trade name: Invista) May be used.
- an elastic yarn that is not heat-fusible can also be used in combination with the heat-fusible yarn.
- the elastic yarn that is not a heat-sealing yarn that can be used in this manner is not particularly limited, and examples thereof include a polyurethane elastic yarn and a polyetherester elastic yarn.
- the yarn used in combination with the elastic yarn can be a heat-sealing yarn.
- the elastic yarn a normal elastic yarn that is not a heat fusion yarn can be used, or a combination with a heat fusion yarn can be used.
- the heat-sealing yarn that can be used in combination with the elastic yarn is not particularly limited, and examples thereof include the above-mentioned heat-sealing polyester yarn and heat-sealing polyamide yarn.
- Examples of the heat-sealing polyamide yarn include elder (trade name, manufactured by Toray Industries, Inc.).
- the yarn combined with the elastic yarn is a heat-sealing yarn
- the hole in the bag-like filter is fixed, and even if a physical force is applied, the hole is difficult to expand. For this reason, it is possible to remove fine solids at the initial stage of filtration. The effect is not likely to occur. From the above viewpoint, it is more preferable to use a heat-sealed elastic yarn as the elastic yarn.
- the second bag-shaped filter of the present invention it is preferable that after forming the shape of the bag-shaped circular knitted fabric, heat treatment is performed to cause fusing with the fusing yarn. By doing so, a constant fusion is made between the stitches, and the stitches are not excessively widened. For this reason, when a fine solid is separated by filtration, it is presumed that leakage from the gaps of the stitches is reduced and the effects of the present invention can be obtained.
- the heat-sealing yarn is used for the above-mentioned purpose, a fiber material using at least elastic yarn is used in part or all over the entire bag-like material, and the entire bag-like material is used. It is preferable that fusion is performed over the entire area.
- the bag-like circular knitted fabric obtained by using the fiber material using at least the elastic yarn used in the present invention for part or all is not particularly limited, and is a composite fiber obtained by combining the elastic yarn and other fibers.
- the knitted fabric (B-1) obtained by the above, the knitted fabric (B-2) obtained by knitting elastic yarns and other fibers, and the like can be used. Hereinafter, these will be described more specifically.
- the composite fiber here is a knitted fabric using a composite yarn in which an elastic yarn is partially used and this is combined with other fibers.
- a part of the elastic yarn or other fiber is a heat-sealing yarn.
- the other fibers to be combined are not particularly limited, and it is preferable to use polyamide fiber, silk, polyester fiber, cotton yarn, polyolefin fiber (for example, polypropylene fiber, polyethylene fiber) and the like.
- polyamide fiber silk, polyester fiber, cotton yarn, polyolefin fiber (for example, polypropylene fiber, polyethylene fiber) and the like.
- polyester fiber it is particularly preferable to use a polyester fiber or a polyamide fiber, and it is most preferable to use a polyester fiber.
- the polyester fiber herein include fibers made of polyethylene terephthalate, fibers made of polybutylene terephthalate, and the like.
- the composite method of the composite yarn is not particularly limited, and any known method such as a covering yarn using a heat-sealed elastic yarn as a core yarn, an aligned yarn of a heat-sealed elastic yarn and a false twisted yarn, or the like is used. be able to. Among them, it is particularly preferable to use a heat-sealing covering yarn obtained by winding other fibers around a heat-sealing elastic yarn from the viewpoint of strength, workability, and the like.
- the heat-sealable polyurethane elastic yarn constituting the heat-sealable covering yarn is not particularly limited, and, for example, those having a denier of 5 to 510 denier can be used.
- the lower limit is more preferably 10 denier, and the upper limit is more preferably 280 denier.
- the heat fusion covering yarn may be either single covering or double covering. More specifically, for example, a single covering yarn (SCY22dWN70 /) which covers a heat-fusion elastic yarn with a high multi-type (one filament is thinner than 1.2 decitex) having a large number of synthetic fibers such as polyester. 48, 50/144, 75/144, 75/72 denier / number, etc.). Alternatively, a double covering yarn (DCY) obtained by covering two heat-bonded elastic yarns with two synthetic fiber yarns may be used.
- SCY22dWN70 / single covering yarn
- DCY double covering yarn obtained by covering two heat-bonded elastic yarns with two synthetic fiber yarns
- a normal elastic yarn may be used as the elastic yarn, and the combined fiber may be a heat-sealing yarn.
- all the composite yarns used may be “composite yarns partially using heat fusion yarns” or used in combination with “composite yarns not using heat fusion yarns”. May be.
- 50% or more of the fibers used must be “composite yarn that uses heat-fused yarn in part” Is preferred.
- the elastic yarn may be used as a single yarn and knitted with other fibers.
- the method of knitting is not particularly limited, and any known knitting structure can be used.
- a heat-sealed elastic yarn partly or entirely as an elastic yarn In such a knitted knitted fabric, it is preferable to use a heat-sealed elastic yarn partly or entirely as an elastic yarn.
- the heat fusion elastic yarn those exemplified in the knitted fabric (B-1) described above can be used.
- a knitted fabric (B-) obtained from a composite fiber obtained by combining the elastic yarn and other fibers is combined. 1) is more preferable.
- each knitted fabric such as (B-1) to (B-2) described above, a composite fiber obtained by combining a heat fusion yarn and other fibers and a combination of two or more kinds of heat fusion yarns are combined. May be used, or a part of other fibers may be used in combination.
- Other fibers are not particularly limited, and polyamide fibers, silk, polyester fibers, cotton yarns, polyolefin fibers (for example, polypropylene fibers, polyethylene fibers) and the like can be used.
- FIG. 1 An example of the first bag-like filter of the present invention is shown in FIG.
- the filter of the present invention has a bag shape having an opening 1.
- a bag shape is formed by sealing one end of the circular knitting by the joint 4 at the bottom.
- the double part 3 (or triple or more part) is formed in the bottom vicinity.
- the bag-like filter having the shape may be one in which an end near the opening also forms a double or more overlap.
- the bag-shaped filter of the present invention may be used by fitting an opening into a pipe. In this case, a load is easily applied to the opening and is easily damaged. Therefore, the opening may be reinforced by forming a double or more knitted fabric. Furthermore, it is preferable in that the reinforcement is made stronger by using a triple or more or quadruple or more structure.
- the formation method of such a double or more structure is not particularly limited, and a method by double knit-in using a K-type knitting machine, or after forming a double part by a normal method, forming a knitting, For example, a method of sewing a triple part and a quadruple part by overlapping knitting.
- the double part may be formed not only in the vicinity of the bottom part but also in the whole body part. If the vicinity of the bottom portion is a double portion, the same effect as that shown in FIG. 1 described above can be obtained. Furthermore, if the whole trunk
- the width of the double knitted structure is not particularly limited. For example, it is 20 to 100% of the width of the bag shape (that is, the width in the lateral direction in the case of the schematic diagram shown in FIG. 1). It is preferable. By setting the width to this level, it is preferable in that the easily damaged portion of the bottom can be sufficiently reinforced.
- Such joining can include a method of sewing by sewing.
- the filter of the present invention has a bag shape having an opening 1.
- a bag shape is formed by sealing one end of the circular knitting by the joint 4 at the bottom.
- the bag-like filter of the present invention is a bag-like circular knitted fabric obtained by using part or all of a fiber material that uses at least a part of a heat-sealing yarn and an elastic yarn. From the viewpoint of durability, it is preferable that the entirety is formed of the same fiber material.
- it may be reinforced by forming a double or more knitted fabric, that is, as shown in FIG.
- An overlapping portion 3 (or a triple or more portion) may be formed.
- the second bag-shaped filter may be one in which an end near the opening also has a double or more overlap.
- the double part may be formed not only in the vicinity of the bottom part but also in the entire body part.
- the formation method of such a double or more structure is not specifically limited, The method similar to the above-mentioned 1st bag-like filter can be mentioned.
- the width with which the knitted structure is doubled is not particularly limited, but as with the first bag-like filter, the width of the bag shape (that is, the width in the lateral direction in the case of the schematic diagram shown in FIG. 1). It is preferably 20 to 100%.
- the shape of the opening 1 of the bag-shaped filter is not particularly limited, but may be one in which a double or more overlap is formed as described above, and further, a string is formed. It may be. That is, it is a general usage method that the bag-like filter is used by fitting the opening into the pipe. For this reason, in order to fix the bag-like filter to the pipe, the most common method is to tie it to the pipe using a string or the like.
- Such a string passing portion is not particularly limited.
- the ground knitting portion and the string pressing portion at the time of knitting with respect to the knitting direction The number of stitches may be different, and the ground knitting portion and the string pressing portion may not be connected by the stitches at the portion where the string passing portion is formed.
- the string passing part formed by such a method is less likely to fray because the tissue forming the bag structure and the string passing part are both formed by a knitted structure, and also in manufacturing. It is advantageous in that the cost is low.
- the width, length, etc. of the stringing portion can be arbitrarily adjusted according to the purpose.
- the manufacturing method of a bag-shaped filter as described above is not particularly limited, for example, it can be manufactured by the following method as schematically shown in FIG.
- the bag-like filter of the present invention can be manufactured by a circular knitting machine.
- a double structure can be obtained by folding back in the vicinity of the end while being knitted into a cylindrical shape, and further joining the barrel at the end.
- Such a double structure can be manufactured by a usual method used for double-in-knit in-rubber knitting of a K-type stocking machine.
- a bag-shaped knitted fabric by a high gauge circular knitting machine (4 inches: 400 needles) which is a sock knitting machine can be mentioned.
- the knitted fabric can be knitted with Akasa (plain fabric) knitting, needle knitting or the like alone or in combination.
- Joining of the body part of the terminal part after folding may be performed by fusion of heat fusion yarns, joined by a knitted structure, or by stitching, and these two or more methods may be used. It may be used in combination.
- the opening part is closed by integrating the end part of the cylindrical object formed in this way, and it can have a bag-like structure.
- a step of integrating the end portions can be performed by a method such as fusion of heat-sealing yarns or general sewing.
- the first bag-shaped filter closes the opening by integrating the ends of the cylindrical object having a double or more folded structure, thereby forming a bag-shaped shape with at least a double or more structure at the bottom. It can have.
- the bottom portion may be formed at the knitting start portion of the tubular knitted fabric, or the bottom portion may be formed at the knitting end portion. In any case, it can be manufactured using a conventional circular knitting machine. Specifically, the double portion can be formed by a double knit-in method using a K-type knitting machine.
- the double part is knitted after the knitting of the double part that has been knitted later. It is preferable as a manufacturing method to prevent fraying by knitting the fused yarn into the eight scrap portions when the knitting is finished from the first knitting.
- a heating step is further performed in order to heat-seal the heat-fusible elastic yarn after knitting.
- the heating temperature is not particularly limited, and it is preferably 80 to 125 ° C. under vacuum under wet heat. Moreover, you may perform simultaneously the heating for such a fusion
- the bag-shaped filter of the present invention can be used in a method of performing filtration in such a manner that waste liquid is introduced from an opening, solid content is captured inside the bag, and the liquid is discharged to the outside.
- a filtration apparatus for performing such filtration is not particularly limited, but can be suitably used in a known filtration apparatus described in, for example, JP 2010-184170 A.
- Example 1 A bag-like circular knitted product having a double opening and tip as shown in FIG. 2 was obtained by circular knitting with a diameter of 4 inches. The obtained bag-like product was 11 cm in width, and the length of the double end portion was 4 cm. In production, a covering yarn having a urethane elastic yarn as a core yarn was used. Moreover, joining of the edge part 4 was performed by the sewing machine.
- Example 2 In the same manner as in Example 1, a bag-like circular knitted fabric having a shape in which the double part extends to the trunk part as shown in FIG. 3 was obtained.
- Example 1 A bag-like filter similar to Example 1 and having no double portion at the tip was manufactured.
- Example 1 The bag-like filter of Example 1 and Comparative Example 1 was used in the filtration device described in JP 2010-184170 to filter the coolant liquid containing cutting metal powder. As a result, the filter of Example 1 was maintained in a usable state after 4 weeks, but the filter of Comparative Example 1 deteriorated after 4 weeks, and it was time to replace it. From the above results, it was revealed that the bag filter of the present invention is excellent in durability. The same results as in Example 1 were obtained with the filter of Example 2.
- Example 3 Non-double, covering yarn of heat-sealable polyurethane elastic yarn
- the bag-shaped circular knitted fabric shown in FIG. 4 was knitted with a circular knitting having a diameter of 4 inches, and was pre-set at 105 ° C. for 15 minutes under a vacuum under wet heat.
- the obtained bag was 11 cm in width.
- a single-covering yarn using heat-fusible polyurethane elastic yarn (Mobilon RLL, manufactured by Nisshinbo Textile Co., Ltd., 100 denier) as a core yarn and woolly nylon (100 denier / 80f) as a sheath yarn was used. . Further, the end portions were joined by sewing.
- Example 4 Non-double, covering yarn using heat-fusible yarn that is not elastic yarn as sheath yarn
- a bag-like circular knitted fabric was knitted with a circular knitting having a diameter of 4 inches, and was treated at 105 ° C. for 15 minutes in a vacuum under wet heat. The obtained bag was 11 cm in width.
- heat-sealed yarn (Elder, manufactured by Toray Industries, Inc.) was used as a sheath yarn for ordinary polyurethane yarn (105d, manufactured by Asahi Kasei Co., Ltd.). Also, the end portions were joined by sewing.
- Example 5 Non-double, aligned yarn of heat-fusible elastic yarn and false twisted yarn
- a bag-like circular knitted fabric was knitted with a circular knitting having a diameter of 4 inches, and was treated at 105 ° C. for 15 minutes in a vacuum under wet heat. The obtained bag was 9 cm in width.
- the fibers used were a heat-bonded polyurethane elastic yarn (Mobilon RLL, manufactured by Nisshinbo Textile Co., Ltd., 100 denier), a covering yarn using 12 denier / 7f polyamide fiber as a sheath yarn, and wooly nylon 50 denier / 40f. A draw yarn was used. Further, the end portions were joined by sewing.
- Example 6 Non-double, knitted fabric obtained by knitting a heat-fusible elastic yarn and other fibers
- covering yarns are used for 1,3, wooly nylon is used for 2,4, bag-shaped circular knitting is knitted with circular knitting of 4 inches in diameter, and 105 ° C x 15 in vacuum under wet heat Minute processed. The obtained bag was 11 cm in width. Further, the end portions were joined by sewing.
- Example 7 (the bottom is double, covering yarn of heat-sealable polyurethane elastic yarn)
- a bag-like material was obtained in the same manner as in Example 3 except that the circular knitting with a diameter of 4 inches was a bag-like circular knitted material having a double opening and tip as shown in FIG. The fusion of the knitting end was performed by heat fusion, and the bottom of the bag-like portion was joined by sewing.
- Example 8 In the same manner as in Example 7, a bag-like circular knitted fabric having a shape in which the double part extended to the trunk part as shown in FIG. 3 was obtained.
- Example 2 Comparative Example 2 (Comparison with Example 3, covering yarn of polyurethane elastic yarn that is not heat-fusible)
- a bag-like circular knitted fabric was obtained in the same manner as in Example 3 using a covering yarn having a polyurethane elastic yarn (105d manufactured by Asahi Kasei Co., Ltd.) as a core yarn and a polyamide fiber (100 denier / 80f) as a sheath yarn.
- the end 4 was joined by sewing.
- the bag-like filter of Example 3 and Comparative Example 2 was used in the filtration device described in JP 2010-184170 to filter the coolant liquid containing cutting metal powder having an average particle size of 5 ⁇ m. As a result, the filter of Example 3 was able to remove fine metal powder. However, the filter of Comparative Example 2 could not remove the fine metal powder, and the fine metal powder was present in the filtrate. From the above results, it became clear that the bag-shaped filter of the present invention can be suitably used for filtering waste liquid containing finer particles. The same results as in Example 3 were obtained with the filters of Examples 4-8. Among these, the filters of Examples 3, 7, and 8 showed particularly excellent performance.
- the bag-like filter of the present invention is, for example, a coolant, cutting oil, grinding fluid, cleaning fluid, etc. that is circulated and used for cooling, lubrication, cleaning, etc. of a processed part in a machine tool as described in JP2010-184170A. It can be suitably used as a filter in a filtration device for filtering processed powder such as cutting powder and polishing powder contained in the liquid to be filtered.
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- Knitting Of Fabric (AREA)
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Abstract
Description
さらに、従来の袋状フィルタよりも、細かな固形物を捕捉することができる、高い濾過性能と耐久性を両立した袋状フィルタを提供することを目的とするものである。
少なくとも一部に弾性糸を使用した繊維素材を一部又は全部に使用して得られた袋状丸編物からなり、袋形状の底部において、少なくとも二重に編地を編成した部位を有することを特徴とする袋状フィルタである。
上記少なくとも二重に編地を編成した部位は、その幅が袋幅の20~100%の範囲であることが好ましい。
少なくとも一部に弾性糸を使用した繊維素材を一部又は全部に使用して得られた袋状丸編物からなり、
使用された繊維素材の一部が熱融着糸であることを特徴とする袋状フィルタでもある。
上記弾性糸は、熱融着弾性糸であることが好ましい。
上記袋状フィルタは、熱融着弾性糸のカバリング糸を少なくとも一部に使用したものであることが好ましい。
上記袋状フィルタは、熱融着弾性糸と仮撚加工糸との引き揃え糸を少なくとも一部に使用したものであることが好ましい。
上記袋状フィルタは、熱融着弾性糸とその他の繊維とを交編した編地であることが好ましい。
上記袋状フィルタは、編工程によって袋状形状を形成した後に熱処理を行うことによって、熱融着糸を融着させたものであることが好ましい。
さらに、本発明の第二の袋状フィルタは、粒径の小さい固形物も濾過できるような良好な濾過性能を有し、これによって濾過能力の向上を図ることができる。
本発明の第一の袋状フィルタは、袋形状の底部において、少なくとも二重に編地を形成した部位を有する点に特徴を有するものである。
すなわち、袋状フィルタは、垂直方向に装置に設置がなされることから、固体を含んだ廃液は、その多くが袋状フィルタの底面部上に落下することになる。よって、落下の際の負荷は主に、フィルタ底部にかかる。そして、濾過された固形物もまた、底部に溜まりやすい。このため、袋状フィルタの底部に負荷が集中し、その結果底部からの劣化を生じやすい。すなわち、胴部においてはほとんど劣化を生じていないのに、底部においてのみ劣化が生じることがあり、これが袋状フィルタの寿命低下の原因となる。本発明においては、このような底部に対して、少なくとも二重に編地を編成した部位を設け、これによって、底部の強度を改善することによって、上述した問題を解決したものである。
以下、これらについて、より具体的に説明する。
ここでの複合繊維は、一部にスパンデックス弾性糸を使用し、これをその他の繊維と組み合わせた複合糸を使用した編地である。ここで、組み合わせるその他の繊維としては特に限定されず、ポリアミド繊維、絹、ポリエステル繊維、綿糸、ポリオレフィン繊維(例えば、ポリプロピレン繊維、ポリエチレン繊維)などを使用することが好ましい。これらのなかでも、ポリエステル繊維、ポリアミド繊維を使用することが特に好ましく、ポリエステル繊維を使用することが最も好ましい。ここでいうポリエステル繊維は、ポリエチレンテレフタレートからなる繊維、ポリブチレンテレフタレートからなる繊維等を挙げることができる。
より具体的には、例えば、弾性糸に、ポリエステルなどの合成繊維のフィラメント数の多いハイマルチタイプ(1フィラメントが1.2デシテックスより細い糸)をカバリングしたシングルカバーリングヤーン(SCY22dWN70/48、50/144、75/144、75/72デニール/本数等)を挙げることができる。また、弾性繊維に、2本の合成繊維の糸をカバリングしたダブルカバーリングヤーン(DCY)であってもよい。なお、スパンデックス繊維としては、一般的に広く使用されているポリウレタン弾性繊維を使用することが好ましいが、これに限定されるものではなく、例えば、ポリエーテルエステル弾性繊維を用いてもよい。また、弾性繊維の糸を合成繊維の糸でカバリングすることにより、加工粉によって編み目の破損や損傷が短時間で発生するのを防止することができる。
一部に弾性体を構成単位とするコンジュゲート繊維は、市販されたものが存在し、これらを好適に使用することができる。例えば、ポリアミドとポリウレタンのコンジュゲート繊維、ポリエステルとポリウレタンのコンジュゲート繊維等を挙げることができる。このようなコンジュゲート繊維のコンジュゲートタイプとしては特に限定されず、サイドバイサイド型、芯鞘型等のものを使用することができる。このようなコンジュゲート繊維としては、KBセーレン社製のシデリア(商品名)等、市販のものを使用することができる。
スパンデックス糸を上述したような複合糸やコンジュゲート糸として使用するのでなく、それ自体を単糸として使用し、その他の繊維と交編したものであってもよい。このような交編の方法としては特に限定されず、公知の任意の編み組織とすることができる。
上述した(A-1)~(A-3)のようなそれぞれの編地においては、スパンデックス弾性糸とその他の繊維とを組み合わせて複合化した複合繊維、弾性体を構成単位とするコンジュゲート繊維、スパンデックス糸を2種以上組み合わせて使用するものであってもよいし、一部その他の繊維を組み合わせて使用するものであってもよい。その他の繊維としては特に限定されず、ポリアミド繊維、絹、ポリエステル繊維、綿糸、ポリオレフィン繊維(例えば、ポリプロピレン繊維、ポリエチレン繊維)などを使用することができる。
本願発明の袋状フィルタは、上記熱融着糸を一部に使用した繊維素材とし、編目の一部を融着させることで、編目のずれを生じにくくすることができ、これによって小さな固形物が編目を通過してしまうことが抑制され、これによって、濾過能力の向上を図ることができる。
上記熱融着性ポリウレタン弾性糸としては特に限定されないが、湿熱下真空80℃で融着した時の熱融着力が0.15N/dtex以上であることが好ましい。このような熱融着性ポリウレタン弾性糸を使用することにより、熱融着性及び熱セット時の耐熱性に優れ、断糸や劣化が起こりにくく耐久性に優れた袋状フィルタを得ることができる。また、上記熱融着性ポリウレタン弾性糸は、糸の太さが10~310texの範囲であることが好ましい。上記範囲より細いと、融着部の表面積が狭くなり、充分な耐久性が得られないおそれがある。また、上記範囲より太いと、編み機の針にかからない場合がある。
であるため好ましい。
このような熱融着性ポリウレタン弾性糸としては、モビロンK-L、モビロンR、モビロンRL、モビロンRLL(商品名:日清紡テキスタイル株式会社製)、ライクラ(商品名:インビスタ社)等の市販の製品を使用してもよい。
以下、これらについて、より具体的に説明する。
ここでの複合繊維は、一部に弾性糸を使用し、これをその他の繊維と組み合わせた複合糸を使用した編地である。そして、この複合糸において、弾性糸又はその他の繊維の一部を熱融着糸としたものである。
より具体的には、例えば、熱融着弾性糸に、ポリエステルなどの合成繊維のフィラメント数の多いハイマルチタイプ(1フィラメントが1.2デシテックスより細い糸)をカバリングしたシングルカバーリングヤーン(SCY22dWN70/48、50/144、75/144、75/72デニール/本数等)を挙げることができる。また、熱融着弾性糸に、2本の合成繊維の糸をカバリングしたダブルカバーリングヤーン(DCY)であってもよい。
更に、使用するすべての複合糸が「一部に熱融着糸を使用した複合糸」であってもよいし、「熱融着糸を使用しない複合糸」と併用して使用するものであってもよい。「一部に熱融着糸を使用した複合糸」を使用する場合、使用する繊維の50%(複合繊維本数換算)以上が「一部に熱融着糸を使用した複合糸」であることが好ましい。
弾性糸を上述したような複合糸として使用するのでなく、それ自体を単糸として使用し、その他の繊維と交編したものであってもよい。このような交編の方法としては特に限定されず、公知の任意の編み組織とすることができる。
熱融着弾性糸としては、上述した編地(B-1)において例示したものを使用することができる。
上述した(B-1)~(B-2)のようなそれぞれの編地においては、熱融着糸とその他の繊維とを組み合わせて複合化した複合繊維、熱融着糸を2種以上組み合わせて使用するものであってもよいし、一部その他の繊維を組み合わせて使用するものであってもよい。その他の繊維としては特に限定されず、ポリアミド繊維、絹、ポリエステル繊維、綿糸、ポリオレフィン繊維(例えば、ポリプロピレン繊維、ポリエチレン繊維)などを使用することができる。
本発明の第一の袋状フィルタの一例を図1に示した。図1に示したように、本発明のフィルタは、開口部1を有する袋状形状を有する。その底部の接合部4によって、丸編みの一端が封じられることで、袋形状が形成されている。そして、当該底部近傍において、二重部3(又は、三重以上部)が形成されている。
袋状フィルタの開口部1の形状は、特に限定されるものではないが、上述したように二重以上の重なりを形成したものであってもよいし、更には、ひも通し部を形成したものであってもよい。すなわち、袋状フィルタは、開口部を配管に嵌めこんで使用することが一般的な使用方法となる。このため、配管に袋状フィルタを固定するためには、ひも等を使用して配管に括り付ける方法が最も一般的である。
このような方法で形成されたひも通し部は、袋構造を形成している組織とひも通し部とが、ともに編み組織によって形成されていることから、ほつれ等を生じにくく、更に、製造においてもコストが安い点で有利である。更に、目的に応じてそのひも通し部の幅や長さ等も任意に調整することができる。
上述したような袋状フィルタの製造方法は特に限定されるものではないが、例えば、図5において模式図で示したような以下の方法によって製造することができる。
本発明の袋状フィルタは、丸編み機によって製造することができる。すなわち、筒状に編みながら、端部近傍で折り返し、更に、末端において、胴部と接合させることで二重の構造を得ることができる。このような二重構造の製造は、K式ストッキング編み機のダブルインニットインゴム口編みに使用される通常の方法で行うことができる。
なお、第一の袋状フィルタは、二重以上の折り返し構造を有する筒状物の端部を一体化させることによって開口部を閉じ、これによって袋状形状の、底部に少なくとも二重以上の構造を有するものとすることができる。
本発明の袋状フィルタは、開口部より廃液を導入し、固形分を袋状内部に捕捉して、液体を外部に排出するような方法で濾過を行う方法に使用することができる。このような濾過を行う濾過装置は特に限定されるものではないが、例えば、特開2010-184170号に記載されたような公知の濾過装置において好適に使用することができる。
(実施例1)
口径4インチの丸編みにて図2に示したような開口部及び先端部が二重になった袋状丸編み物を得た。得られた袋状物は、幅11cmであり、先端部の二重になっている部分の長さは、4cmであった。
なお、製造に際しては、ウレタン弾性糸を芯糸とするカバリング糸を使用した。また、端部4の接合は、ミシン縫いによって行った。
実施例1と同様の方法で、図3に示したように二重部が胴部にまで及んだ形状の袋状丸編み物を得た。
実施例1と同様の袋状フィルタであって、先端部の二重部がない袋状フィルタを製造した。
実施例1及び比較例1の袋状フィルタを特開2010-184170号に記載された濾過装置において使用して、切削金属粉が含まれたクーラント液の濾過を行った。その結果、実施例1のフィルタは、4週間経過後も使用できる状態を維持していたが、比較例1のフィルタは、4週間経過後にフィルタが劣化し、交換時期となった。以上の結果から、本発明の袋状フィルタは、耐久性に優れることが明らかとなった。実施例2のフィルタでも実施例1と同等の結果が得られた。
口径4インチの丸編みにて図4に示した袋状丸編み物を編み、湿熱下真空で105℃×15分でプレセットを行った。得られた袋状物は、幅11cmであった。
なお、製造に際しては、熱融着性ポリウレタン弾性糸(モビロンRLL、日清紡テキスタイル社製、100デニール)を芯糸とし、ウーリーナイロン(100デニール/80f)を鞘糸として使用したシングルカバリング糸を使用した。また、端部の接合は、ミシン縫いによって行った。
口径4インチの丸編みにて袋状丸編み物を編み、湿熱下真空で105℃×15分処理した。得られた袋状物は、幅11cmであった。
なお、製造に際しては、通常のポリウレタン糸(105d、旭化成社製)カバリングの鞘糸として、熱融着糸(エルダー、東レ社製)を使用した。また、端部の接合はミシン縫いによって行った。
口径4インチの丸編みにて袋状丸編み物を編み、湿熱下真空で105℃×15分処理した。得られた袋状物は、幅9cmであった。使用した繊維は、熱融着ポリウレタン弾性糸(モビロンRLL、日清紡テキスタイル社製、100デニール)を芯糸とし、12デニール/7fのポリアミド繊維を鞘糸としたカバリング糸とウーリーナイロン50デニール/40fの引き揃え糸を使用した。また、端部の接合は、ミシン縫いによって行った。
熱融着性ポリウレタン弾性糸(モビロンRLL、日清紡テキスタイル社製、100デニール)を芯糸とし、ウーリーナイロン(100デニール/80f)を鞘糸として使用したシングルカバリング糸とウーリーナイロン100デニール/80fとを使用した。編み機の4口のうち、1,3にカバリング糸を使用し、2,4にウーリーナイロンを使用し、口径4インチの丸編みにて袋状丸編み物を編み、湿熱下真空で105℃×15分処理した。得られた袋状物は、幅11cmであった。また、端部の接合は、ミシン縫いによって行った。
口径4インチの丸編みにて図2に示したような開口部及び先端部が二重になった袋状丸編み物である以外は、実施例3と同様にして袋状物を得た。なお、編み末端の融着は熱融着によって行い、袋状部の底部の接合はミシン縫いによって行った。
実施例7と同様の方法で、図3に示したように二重部が胴部にまで及んだ形状の袋状丸編み物を得た。
ポリウレタン弾性糸(旭化成社製105d)を芯糸とし、ポリアミド繊維(100デニール/80f)を鞘糸とするカバリング糸を使用し、実施例3と同様の方法で、袋状丸編み物を得た。なお端部4の接合はミシン縫いによって行った。
実施例3及び比較例2の袋状フィルタを特開2010-184170号に記載された濾過装置において使用して、平均粒子径5μmの切削金属粉が含まれたクーラント液の濾過を行った。その結果、実施例3のフィルタは、微細な金属粉を除去することができた。しかし、比較例2のフィルタは、微細な金属粉を除去することができず、濾過液中に微細な金属粉が存在する状態となった。以上の結果から、本発明の袋状フィルタは、より微細な粒子を含む廃液の濾過に好適に使用できることが明らかとなった。実施例4~8のフィルタでも、実施例3と同等の結果が得られた。これらのなかでも、実施例3,7,8のフィルタは、特に優れた性能を示した。
2 胴部
3 二重部
4 接合部
5 開口部に設けた二重部
Claims (9)
- 固形分を含む廃液を濾過するために使用される袋状フィルタであって、
少なくとも一部に弾性糸を使用した繊維素材を一部又は全部に使用して得られた袋状丸編物からなり、袋形状の底部において、少なくとも二重に編地を編成した部位を有することを特徴とする袋状フィルタ。 - カバリング弾性糸を少なくとも一部に使用したものである請求項1記載の袋状フィルタ。
- 少なくとも二重に編地を編成した部位は、その幅が袋幅の20~100%の範囲である請求項1又は2記載の袋状フィルタ。
- 固形分を含む廃液を濾過するために使用される袋状フィルタであって、
少なくとも一部に弾性糸を使用した繊維素材を一部又は全部に使用して得られた袋状丸編物からなり、
使用された繊維素材の一部が熱融着糸であることを特徴とする袋状フィルタ。 - 弾性糸は、熱融着弾性糸である請求項4記載の袋状フィルタ。
- 熱融着弾性糸のカバリング糸を少なくとも一部に使用したものである請求項5記載の袋状フィルタ。
- 熱融着弾性糸と仮撚加工糸との引き揃え糸を少なくとも一部に使用したものである請求項5記載の袋状フィルタ。
- 熱融着弾性糸とその他の繊維とを交編した編地である請求項5記載の袋状フィルタ。
- 編工程によって袋状形状を形成した後に熱処理を行うことによって、熱融着糸を融着させたものである請求項4~8のいずれか1に記載の袋状フィルタ。
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JP2019546252A JPWO2019163709A1 (ja) | 2018-02-23 | 2019-02-18 | 袋状フィルタ |
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CN201980001900.9A CN110520207A (zh) | 2018-02-23 | 2019-02-18 | 袋状过滤器 |
US16/609,153 US20200094178A1 (en) | 2018-02-23 | 2019-02-18 | Bag-shaped filter |
EP19757960.0A EP3695894A4 (en) | 2018-02-23 | 2019-02-18 | BAG-LIKE FILTER |
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