CN105377399A - Filter medium - Google Patents
Filter medium Download PDFInfo
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- CN105377399A CN105377399A CN201480039491.9A CN201480039491A CN105377399A CN 105377399 A CN105377399 A CN 105377399A CN 201480039491 A CN201480039491 A CN 201480039491A CN 105377399 A CN105377399 A CN 105377399A
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- Prior art keywords
- filter
- former
- maintaining part
- interval
- flat part
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
- B01D46/522—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material with specific folds, e.g. having different lengths
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
- B01D46/523—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material with means for maintaining spacing between the pleats or folds
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- 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
- B01D2239/0654—Support layers
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
A filter medium for collecting particles contained in a gas to be filtered, characterized by: a peel strength of 0.4N or more as observed in the raw sheet of the filter medium in peeling the porous layer from the substrate layer; and a separation strength of 0.6 to 3N as observed in the raw sheet thereof in separating flat sections which are bonded to each other by spacers.
Description
Technical field
This application claims the priority of No. 2013-171609, Japan's Patent and enrolled by reference in the record of present specification.
The present invention relates to a kind of filter filtration material for trapping the particle be filtered contained by gas, the former material of filter material of substrate layer particularly relating to a kind of porous layer to comprising for trapping this particle and be bonded in this porous layer carries out the filter filtration material that kilting processes.
Background technology
In the past, as manufacture semiconductor, liquid crystal factory toilet etc. in the filter filtration material that uses, be known to a kind of by carrying out the filter filtration material that kilting processes to the former material of filter material being configured to trap the particle be filtered contained by gas.This filter filtration material comprises: multiple bend, and the plurality of bend is formed by being bent in many places by former for filter material material; And multiple flat part, the plurality of flat part is formed by the region except bend in the former material of filter material and configures in the mode of face-off.
In addition, this filter filtration material also comprises multiple intervals maintaining part, and adjacent flat part links up for keeping the interval between adjacent flat part by the plurality of interval maintaining part simultaneously each other.This interval maintaining part is formed by multiple rib (bead) portion, and flank is formed by opening compartment of terrain adhesive-applying (PUR etc.) in the overhead, two faces of the former material of filter material.Specifically, interval maintaining part is formed by being linked up each other by the flank being formed at two adjacent flat parts (with reference to patent document 1).
In addition, as forming the former material of filter material of described such filter filtration material, be known to a kind ofly will be used for trapping the porous layer (material etc. be such as made up of polytetrafluoroethylene (PTFE)) of the particle be filtered contained by gas and there is the former material of filter material (reference patent document 2 and patent document 3) of substrate layer (such as non-woven fabrics etc.) bonding (such as heat lamination etc.) of gas permeability.
Patent document 1: the flat 09-313856 publication of Japanese Laid-Open
Patent document 2: Japanese Laid-Open 2004-000990 publication
Patent document 3: Japanese Laid-Open 2009-101254 publication
In addition, sometimes described such filter filtration material is unexpectedly elongated to making the interval between flat part expand such direction (be also denoted as below and elongate direction), in this case, the interval maintaining part (being also denoted as interval, another side side maintaining part below) of the interval maintaining part (be also denoted as below one side interval, side maintaining part) being formed at the side, a face of the former material of filter material and the another side side being formed at the former material of filter material is opened along elongating direction.
In addition, even if when filter filtration material itself is not elongated, under the raw-material contraction forming interval maintaining part waits impact, one side interval, side maintaining part and interval, another side side maintaining part are also pulled open by along elongation direction sometimes.
In these cases, porous layer and substrate layer, in the part (being also denoted as maintaining part overlapping portion, interval below) of flat part overlap, are peeled off such power and can be put on the former material of filter material by the one side side interval maintaining part in filter filtration material and interval, another side side maintaining part.Therefore, in maintaining part overlapping portion, interval, porous layer and substrate layer are likely peeled off and between porous layer and substrate layer, form space (be also denoted as below and peel off space).Further, such stripping space becomes the main cause causing the arresting efficiency of filter filtration material to reduce.
Summary of the invention
the problem that invention will solve
Therefore, problem of the present invention is, providing a kind of and can peel off space by preventing from being formed in the former material of filter material forming filter filtration material under the state defining filter filtration material, preventing from peeling off space and the filter filtration material that causes arresting efficiency to reduce because being formed.
for the scheme of dealing with problems
The invention provides a kind of filter filtration material, former for filter material material bends in many places and is formed as folded shape and forms by it, the former material of this filter material comprises porous layer for trapping the particle be filtered contained by gas and is bonded in the substrate layer at least one face of this porous layer, it is characterized in that, this filter filtration material comprises: multiple bend, and the plurality of bend is formed by being bent by former for described filter material material, multiple flat part, the plurality of flat part is formed by the region except multiple bend in the former material of filter material and configures in the mode of face-off, and multiple intervals maintaining part, in the side, a face of the former material of filter material, this interval maintaining part is formed between each flat part, in the another side side of the former material of filter material, this interval maintaining part is formed between each flat part, adjacent flat part is linked up each other for keeping the interval between adjacent flat part simultaneously, each interval maintaining part of each interval maintaining part being formed at the side, a face of the former material of described filter material and the another side side being formed at the former material of filter material is to be formed across the mode of each flat part overlap, peel strength when porous layer in the former material of filter material and substrate layer are stripped is more than 0.4N, and make each flat part of being linked up by interval maintaining part mutual separated time peeling strength be 0.6N ~ 3N.
Preferably, arrange to the partial linear across each flat part overlap in each interval maintaining part of each interval maintaining part being formed at the side, a face of the former material of filter material and the another side side being formed at the former material of filter material.
Accompanying drawing explanation
Fig. 1 is the stereogram of the filter filtration material representing present embodiment.
Fig. 2 is stereogram and the enlarged partial sectional view of the former material of filter material representing that the filter filtration material of present embodiment uses.
Fig. 3 is the sectional view of the filter filtration material utilizing this embodiment of face cutting intersected with flat part.
Fig. 4 is the sectional view of the maintaining part overlapping portion, interval of the filter filtration material of this embodiment of face cutting utilizing length direction and width along filter filtration material to extend.
Fig. 5 is the sectional view of the filter filtration material of present embodiment.
Fig. 6 is the stereogram of the former material of filter material representing the filter filtration material forming another embodiment.
Fig. 7 is the sectional view of the interval maintaining part of the filter filtration material representing this embodiment.
Detailed description of the invention
Below, with reference to Fig. 1 ~ Fig. 4, embodiments of the present invention are described.In addition, in figures in the following, the reference Reference numeral identical to identical or suitable part mark, does not repeat its explanation.
As shown in Figure 1, the filter filtration material 1 of present embodiment is formed as by being bent in many places by former for the filter material being used for trapping the particle be filtered contained by gas material 2 filter filtration material that folded shape forms (being also denoted as kilting processing below).In addition, filter filtration material 1 comprises: multiple bend 1a, and the plurality of bend 1a is formed by being bent along a direction by former for filter material material 2; And multiple flat part 1b (the flat part specifically between bend 1a, 1a), the plurality of flat part 1b are formed by the region except this bend 1a of filter filtration material and configure in the mode of face-off.In addition, filter filtration material 1 also comprises multiple intervals maintaining part 3, and adjacent flat part 1b, 1b link up for keeping the adjacent interval between flat part 1b, 1b by the plurality of interval maintaining part 3 simultaneously each other.
Between each flat part 1b that interval maintaining part 3 is formed in the side, a face of the former material of filter material 2 and each flat part 1b of another side side.In addition, interval maintaining part 3 is formed by being linked up each other at adjacent flat part 1b, 1b by bonding agent (being also the denoted as flank below) 3a in the region for the formation of each flat part 1b be coated in the former material of filter material 2.Specifically, flank 3a is being the side, peak that wire is formed at this region with the mode intersected for the formation of the region of each bend 1a in the former material of filter material 2.Then, by flank 3a, 3a being linked up each other between flat part 1b, 1b adjacent and form interval maintaining part 3.As the bonding agent forming flank 3a, be not particularly limited, such as, can PUR etc. be used.
As shown in Figure 2, the former material of described filter material 2 is length direction carrying out being formed as under the state before kilting processing another direction orthogonal with direction.That is, in the present embodiment, a direction of the former material of filter material 2 is equivalent to the width of the former material 2 of filter material.In addition, the former material of filter material 2 both can be configured to become strip by idiomorphism and rolled-up state unreels and becomes sheet, also can be the monolithic body shape being formed as specific length.
In addition, the former material 2 of filter material comprises the substrate layer 2b for trapping the porous layer 2a being included in the particle be filtered contained by gas and at least one side, face being laminated in this porous layer 2a.In the present embodiment, the substrate layer 2b with gas permeability be bonded in a face of porous layer 2a and form the former material 2 of filter material.
The sheet material (being also denoted as Porous sheet below) that use can trap the Porous of described particle forms described porous layer 2a.As this Porous sheet, be not particularly limited, suitably can select according to the purposes of filter filtration material 1, as this Porous sheet, the PTFE sheet such as polytetrafluoroethylene (PTFE) (PTFE) being formed as sheet can be listed.As the method forming this PTFE sheet, such as following method can be listed.
Specifically, in PTFE fine powder, add aqueous lubricant and form the mixture of paste.As aqueous lubricant, be not particularly limited, as long as the wetability of appropriateness can be given to mixture surface, if aqueous lubricant can utilize extraction process, heating and being removed, then particularly preferably.Such as, as aqueous lubricant, the hydrocarbons etc. such as fluid paraffin wax, naphtha, white oil can be used.As the addition of aqueous lubricant, being not particularly limited, preferably, such as, is 5 mass parts ~ 50 mass parts relative to PTFE fine powder 100 mass parts.
Then, described mixture preform is formed preform.Preferably can not carry out preform under the pressure of the degree of mixture separation at aqueous lubricant.Next, utilize extrusion molding, roll forming makes the preform obtained be formed as sheet.Afterwards, by by the formed body obtained uniaxial tension or biaxial stretch-formed and make this formed body be formed as the PTFE sheet of Porous.In addition, as stretching condition, be not particularly limited, such as, be preferably, under the temperature environment of 30 DEG C ~ 400 DEG C, for each axle, stretching ratio is 1.5 times ~ 200 times.In addition, when not carrying out firing process in stretching process, preferably after stretching process, PTFE sheet is fired with temperature more than fusing point.
Described substrate layer 2b comprises the sheet material (being also denoted as gas permeability sheet below) with gas permeability.As gas permeability sheet, be not particularly limited, can list such as non-woven fabrics, spin cloth, net etc.Particularly, when making porous layer 2a (Porous synusia) and substrate layer 2b (gas permeability sheet) thermal welding (heat lamination), preferably use by the gas permeability sheet there are thermoplastic raw material forming.As the raw material forming gas permeability sheet, synthetic fibers, their composites etc. such as such as polyolefin (polyethylene, polypropylene etc.), polyamide, polyester, aromatic polyamide, acrylic acid, polyimides can be listed.
In addition, as gas permeability sheet, preferably it is to have two kinds of compositions of fusing point difference for raw material.Preferably the blending non-woven fabrics etc. of the non-woven fabrics be such as made up of the core sheath fiber of PET/PE, PP/PE is used as gas permeability sheet.By using the gas permeability sheet that is made up of such two kinds of compositions, can prevent from making the melting of whole gas permeability sheet as when gas permeability sheet is made up of single component and the situation that can not keep the form of substrate layer 2b.
The former material 2 of filter material is formed by being bonded by porous layer 2a and substrate layer 2b.Such as, also can form the former material 2 of filter material in the following manner: between the Porous sheet for the formation of porous layer 2a and the gas permeability sheet for the formation of substrate layer 2b, configure PUR, pressure sensitive bonding agent, by Porous sheet and the crimping of gas permeability sheet.Or, also can pass through the gas permeability sheet after heating being softened and crimp (in other words as heat lamination) to be formed the former material 2 of filter material with Porous sheet.In addition, the peel strength when porous layer 2a in the former material 2 of filter material and substrate layer 2b is stripped is more than 0.4N, is more preferably more than 0.6N.This peel strength is measured by the method described in following embodiment.
When the former material 2 of filter material that use is formed as described is to form filter filtration material 1, first, kilting processing is carried out to the former material 2 of filter material.Specifically, in the former material of filter material 2 the length direction overhead standard width of a room in an old-style house every many places former for filter material material 2 is bent along width.Thus, make the former material 2 of filter material be formed as folded shape, thus form multiple bend 1a and multiple flat part 1b.Preferably with the temperature of regulation (such as, be preferably less than 130 DEG C, be more preferably 50 DEG C ~ 90 DEG C), the former material 2 of filter material after kilting processing is heated.Thereby, it is possible to keep the shape of the bend 1a be formed on the former material 2 of filter material.
In addition, in the following description, the region be bent in former for filter material material 2 is set to bending presumptive area A1.That is, the former material of filter material 2 in the longitudinal direction sky open compartment of terrain and comprise multiple bending presumptive area A1.In addition, the adjacent region between bending presumptive area A1, A1 in former for filter material material 2 is set to flat part presumptive area A2.
Next, two faces of the former material 2 of filter material form flank 3a in wire adhesive-applying.Specifically, former for the filter material being formed as folded shape material 2 is stretched as the flat condition before kilting processing, and on two faces of the former material 2 of filter material adhesive-applying and form flank 3a.As the thickness of this flank 3a, be not particularly limited, such as, be preferably 30mm ~ 50mm.In addition, as the width (thickness) of flank 3a, be not particularly limited, such as, be preferably 0.3mm ~ 5.0mm, more preferably 0.5mm ~ 2.5mm, be particularly preferably 1.3mm ~ 2.1mm.
In addition, flank (being also denoted as a side rib portion and the another side side rib portion below) 3a of the side, a face and another side side that are formed in the former material of filter material 2 is formed multiple along the empty standard width of a room in an old-style house of the length direction of the former material of filter material 2 respectively every ground.In addition, a side rib portion 3a and another side side rib portion 3a is formed on roughly same straight line along the length direction of the former material of filter material 2.In addition, a side rib portion 3a and another side side rib portion 3a is formed multiple (being 3 in the present embodiment) along the empty standard width of a room in an old-style house of width of the former material of filter material 2 every ground
In addition, as the shape of flank 3a, be not particularly limited, in the present embodiment, flank 3a is formed as wire along the length direction of the former material 2 of filter material.In addition, flank 3a is formed in the mode of intersecting with bending presumptive area A1.In addition, flank 3a be formed at become side, peak when bending presumptive area A1 is bent face on.That is, a bending presumptive area A1 and the side rib portion 3a be configured in adjacent bending presumptive area A1, A1 intersects and another bending presumptive area A1 and another side side rib portion 3a intersects.In addition, flank 3a is configured to intersect in its substantially central portion and bending presumptive area A1.
In addition, as the length of crossover location to the end of flank 3a from flank 3a and bending presumptive area A1, be not particularly limited, be preferably the length that rib coating length ratio is greater than 50%.Rib coating length ratio refers to, from the ratio of length to an end of flank 3a of the crossover location of flank 3a and bending presumptive area A1 relative to the adjacent distance bending presumptive area A1, A1.That is, preferred flank 3a is formed into the position of the central portion exceeding adjacent region (that is, the flat part presumptive area) A2 between bending presumptive area A1, A1 from the crossover location of bending presumptive area A1.In addition, the adjacent distance between bending presumptive area A1, A1 refers to, the length direction along the former material of filter material 2 links the distance of the central portion of a bending presumptive area A1 and the central portion of another bending presumptive area A1.
In addition, a side rib portion 3a and another side side rib portion 3a is formed in the mode overlapping across the former material 2 (specifically flat part presumptive area A2) of filter material.Specifically, with respectively with in the side rib portion 3a that adjacent bending presumptive area A1, A1 intersect and another side side rib portion 3a, the flank 3a that formed on the same line along the length direction of the former material of filter material 2 formed across the mode that the former material of filter material 2 is overlapping each other in flat part presumptive area A2.In addition, as the position of a side rib portion 3a and another side side rib portion 3a overlap, be not particularly limited, be preferably the substantially central portion in flat part presumptive area A2.
As the bonding agent for forming flank 3a, be not particularly limited, such as, can use PUR.As temperature when PUR being coated on the former material 2 of filter material, different according to the composition of PUR, be such as preferably 100 DEG C ~ 250 DEG C, be more preferably 140 DEG C ~ 230 DEG C.
Former for the filter material being formed with flank 3a as described material 2 is again bent in each bending presumptive area A1 and is formed as folded shape.Thus, as shown in Figure 3 and Figure 4, form multiple bend 1a and multiple flat part 1b, and the position between each flat part 1b in each flank 3a engages and forms multiple intervals maintaining part 3 each other.Thus, the interval of adjacent flat part 1b, 1b is kept by interval maintaining part 3, and adjacent flat part 1b, 1b is linked up by interval maintaining part 3, thus forms filter filtration material 1.
Therefore, when using PUR as bonding agent for forming flank 3a, preferably, when PUR softens to the degree that PUR can engage each other, former for filter material material 2 is formed as folded shape by (in sphere time) again.In addition, make each flat part 1b of being linked up by interval maintaining part 3 mutual separated time peeling strength be 0.6N ~ 3N, be more preferably 0.9N ~ 2.5N.This peeling strength is measured by the method described in following embodiment.
In addition, in the following description, the size on the direction suitable with the length direction of the former material of filter material 2 in filter filtration material 1 is set to the length L1 of filter filtration material 1.In addition, the size on the direction suitable with the width of the former material of filter material 2 in filter filtration material 1 is set to the width L2 of filter filtration material 1.In addition, the interval between the bend 1a mode becoming side, peak with the side, a face of the former material of filter material 2 formed and the bend 1a formed in the mode that the another side side of the former material 2 of filter material becomes side, peak is set to the height L3 of filter filtration material 1.
In the filter filtration material 1 formed as described, be formed with interval maintaining part 3 respectively in the side, a face of the former material 2 of filter material and another side side.In addition, each interval maintaining part 3 is formed as linearity along the height L3 direction of filter filtration material 1.In addition, each interval maintaining part 3 (being also denoted as one side interval, side maintaining part 3 below) of the side, a face of the former material of filter material 2 and the interval maintaining part 3 (being also denoted as interval, another side side maintaining part 3 below) of another side side alternately arrange along the length L1 direction (alongst linearly (linearly) specifically) of filter filtration material 1.
And one side interval, side maintaining part 3 and interval, another side side maintaining part 3 are to be formed across the mode of flat part 1b overlap.Specifically, one side interval, side maintaining part 3 and interval, another side side maintaining part 3 are formed across the mode of flat part 1b overlap each other with their end.In addition, the substantially central portion that is configured on the height L3 direction of filter filtration material 1 of one side interval, side maintaining part 3 and interval, another side side maintaining part 3 is overlapping across flat part 1b.Specifically, be configured to be greater than 50% of the length flat part 1b and the coupling position of pair of curved portion 1a, 1a from the length of coupling position to an end of each interval maintaining part 3 of bend 1a and flat part 1b.Thus, one side interval, side maintaining part 3 and the substantially central portion overlap of interval, another side side maintaining part 3 on the height L3 direction of filter filtration material 1 is configured to.
By making one side interval, side maintaining part 3 and interval, another side side maintaining part 3 overlap as described, thus be formed with part (be below also the denoted as interval maintaining part overlapping portion) B1 of each interval maintaining part 3 across flat part 1b overlap along the length L1 direction of filter filtration material 1.This maintaining part overlapping portion, interval B1 is formed at the substantially central portion on the height L3 direction of filter filtration material 1.In addition, multiple (specifically 3 places) maintaining part overlapping portion, interval B1 is formed with at overhead, the width L2 direction standard width of a room in an old-style house of filter filtration material 1 every ground.Between each interval maintaining part overlapping portion B1 on the width L2 direction of filter filtration material 1, do not form interval maintaining part 3, between flat part 1b, be formed with space.
The mode that the filter filtration material 1 with described structure both can intersect with flat part 1b and the flow direction being filtered gas configures, also can by flat part 1b along the flow direction configuration being filtered gas.Further, being filtered gas mainly can through the flat part 1b in filter filtration material 1.
In addition, this filter filtration material 1 uses with the state be housed in framework (not shown) after forming this filter filtration material 1 by the mode that also can become the shape of regulation in the profile of the filter filtration material 1 to have described structure (shape from height L3 direction is seen).As the shape of this framework, as long as the shape of filter filtration material 1 can be accommodated, just there is no particular limitation, the internal diameter include, for example out that inside dimension is 1180mm × 1180mm, outside dimension is 1220mm × 1220mm, that thickness is 75mm is rectangular-shaped, having regulation round-shaped etc.Also caulking agent can be filled with between filter filtration material 1 and framework.As this caulking agent, such as, can use two-liquid type epoxy caulking agent (Henkel Corp. manufactures the two-liquid type epoxy caulking agent mixed with the ratio of 3:1 by Macroplast8104MC-18 and MacroplastUK5400 specifically).
As mentioned above, adopting filter filtration material of the present invention, can, by preventing from being formed in the former material of filter material forming filter filtration material under the state defining filter filtration material peeling off space, preventing from causing arresting efficiency to reduce because forming stripping space.
Namely, as shown in Figure 4, sometimes described filter filtration material 1 can be elongated by expanding to the interval between flat part 1b such direction (be also denoted as below and elongate direction) when processing or use being expanded to the interval between flat part 1b under the state of having elongated in such direction, even if but in this case, porous layer 2a also can be prevented to be separated partly with substrate layer 2b.
Specifically, when filter filtration material 1 is elongated along elongation direction, one side interval, side maintaining part 3 and interval, another side side maintaining part 3 are opened along elongation direction (one side interval, side maintaining part 3 is to X-direction specifically, and interval, another side side maintaining part 3 is to Y-direction).Now, in the B1 of maintaining part overlapping portion, interval, the former material 2 of filter material forming flat part 1b is stretched to Y-direction by interval, another side side maintaining part 3 while X-direction stretches by interval, one side side maintaining part 3.Therefore, at maintaining part overlapping portion, interval B1, porous layer 2a and substrate layer 2b is pulled open such power (porous layer 2a and substrate layer 2b is peeled off such power) and the former material 2 of filter material can be put on, thus likely between porous layer 2a and substrate layer 2b, form space.
But, be more than 0.4N by making the peel strength of the former material of filter material 2 and make the mutual peeling strength of each flat part 1b be 0.6N ~ 3N, thus when processing filters filter material 1, even if the power on elongation direction puts on filter filtration material 1, porous layer 2a and substrate layer 2b also effectively can be prevented to be stripped at B1 place, maintaining part overlapping portion, interval and to form stripping space.Thereby, it is possible to prevent the reduction of the arresting efficiency of filter filtration material 1.
In addition, due to the part across each flat part 1b overlap in interval, each one side side maintaining part 3 and interval, each another side side maintaining part 3 (namely, each interval maintaining part overlapping portion B1) linearly (linearly) arrangement, therefore, power can put on the former material 2 of filter material and porous layer 2a and substrate layer 2b is peeled off at B1 place, maintaining part overlapping portion, each interval, but be more than 0.4N by making the peel strength of the former material of filter material 2 and make the mutual peeling strength of each flat part 1b be 0.6N ~ 3N, can prevent from being formed at each interval maintaining part overlapping portion B1 peeling off space.
In addition, the peel strength of the former material of filter material and the mutual peeling strength of each flat part utilize the method illustrated in the following embodiments to measure.
In addition, filter filtration material of the present invention is not limited to described embodiment, can carry out various change without departing from the spirit and scope of the invention.In addition, self-evident, also at random can adopt the structure, method etc. of described multiple embodiments to carry out and combine (structure, method etc. that also the structure of 1 embodiment, method etc. can be applied to another embodiment), further, also at random can select the structure, method etc. of following various modification and be applied to the structure, method etc. of described embodiment.
Such as, in said embodiment, bending presumptive area A1 and flank 3a is formed in the mode of intersecting, but be not limited thereto, such as, as shown in Figure 6, each flank 3a also can be formed at the inner side of flat part presumptive area A2 when not intersecting with bending presumptive area A1.In this case, when forming filter filtration material 1, as shown in Figure 7, the position (specifically the central portion of flat part 1b) that in flat part 1b and bend 1a separates forms interval maintaining part 3 '.
In addition, in said embodiment, use the former material 2 of filter material comprising porous layer 2a and substrate layer 2b to form filter filtration material 1, but be not limited thereto, such as, the former material of filter material in two faces substrate layer 2b being bonded in porous layer 2a also can be used to form filter filtration material.Or, the former material of filter material in two faces porous layer 2a being bonded in substrate layer 2b also can be used to form filter filtration material.
Embodiment
Below, embodiments of the invention are described.
1. use material
(1) Porous sheet
As Porous sheet, employ PTFE sheet.This PTFE sheet is made into by following method.First, relative to PTFE fine powder (rising sun ICIFluoropolymers company manufacture teflon CD-123) 100 weight portions, add aqueous lubricant (dodecane) 20 weight portion and define the mixture of paste.Then, after by this mixture preform, extrusion molding is carried out to it and obtains shaft-like formed body.Make the formed body obtained by obtaining the strip sheet of thickness 200 μm between pair of metal stack (not shown).Then, this strip sheet is alongst stretched 14 times under the environment of 200 DEG C, and stretch 30 times along width orthogonal to the longitudinal direction under the environment of 80 DEG C, resulting in unfired PTFE sheet.Produce stove by utilizing hot blast to fire with 400 DEG C of PTFE sheets unfired to this, thus obtain PTFE sheet.
The average pore size of the PTFE sheet obtained is 1.0 μm, and thickness is 10 μm, and average fiber footpath is 0.10 μm, and arresting efficiency is 99.95%, and the pressure loss is 130Pa.Arresting efficiency and the pressure loss are measured by following method.
(2) gas permeability sheet
Be 30g/m as grammes per square metre
2non-woven fabrics, employ and there is core composition be PET and sheath composition is the non-woven fabrics (You Nijia company manufacture ELEVESS0303WDO) of the core sheath structure of PE.
Be 40g/m as grammes per square metre
2non-woven fabrics, employ and there is core composition be PET and sheath composition is the non-woven fabrics (You Nijia company manufacture ELEVESS0403WDO) of the core sheath structure of PE.
(3) bonding agent (material for the formation of flank 3a)
The PUR (Henkel Corp. manufactures Macromelt6202) that polyamide (PA) is
The PUR (Henkel Corp. manufactures TechnomeltQ3115) that ethylene-vinyl acetate c resin (EVA) is
2. the former material of filter material
Stacked described gas permeability sheet on two faces of described Porous sheet and define duplexer.Then, by making this duplexer by between the pair of rolls that is heated to 180 DEG C, thus heat lamination being carried out to Porous sheet and gas permeability sheet, being made into the former material of filter material being bonded with the three-layer structure of substrate layer in two faces of porous layer thus.
3. kilting processing
Utilize shuttle kilting processing machine, as described embodiment, kilting processing has been carried out to the former material of described filter material.Then, under the environment of 50 DEG C ~ 90 DEG C, the former material of filter material after kilting processing is heated, thus maintain the shape of the former material of filter material after kilting processing.
4. make filter filtration material
The former material of filter material after kilting being processed elongates with sheet, defines the flank of multiple wire as described embodiment.Each flank is along the length direction of the former material 2 of filter material with 25mm gap-forming.In addition, each flank is formed as wire in the mode of intersecting with bending presumptive area.Then, as described embodiment, make the former material of filter material being formed with multiple flank again be formed as folded shape, thus form interval maintaining part, thus be made into Fig. 1 and filter filtration material as shown in Figure 3.
5. measure the peel strength of the former material of filter material
The isodromicing elongation's test instrument described in JISK6403-3:1999 is used to measure the side, a face of the former material of filter material and the peel strength of another side side.Specifically, 3 places on the width of the former material of filter material, the length direction cut out along the former material of filter material be 180mm, along the width of the former material of filter material be the test film of 20mm.Next, the end on the length direction of each test film, peels off the face (or another side) of gas permeability sheet from porous layer, thus defines a pair holding sheet in an end of test film.Then, hold sheet by this pair and be installed on described isodromicing elongation's test instrument (chuck spacing is 100mm), determine the maximum intensity of test film when chuck spacing expands with 300mm/min.Then, the mean value of the maximum intensity that recorded in two faces at each test film (adding up to mensuration 6 place) is as the peel strength of the former material of filter material.
6. measure the mutual peeling strength of each flat part
The isodromicing elongation's test instrument described in JISK6403-3:1999 is used to measure the peeling strength that each flat part is mutual.Specifically, in inherent filtration device filter material, linearly on length L1 direction (linearly) is arranged with the part of multiple intervals maintaining part, has cut out the test film of 20mm width to make four interval holding part in the mode of substantially central portion.That is, in test film, alongst linearly (linearly) be arranged with four interval maintaining parts (that is, one side interval, side maintaining part is two, and interval, another side side maintaining part is two).Then, both ends on the length direction of this test film are installed on described isodromicing elongation's test instrument (chuck spacing is 100mm), determine the maximum intensity of this test film when chuck spacing expands with 300mm/min (that is, the total intensity at 4 places linked up each other by adjacent flat part).Then, using the mean value at 4 places of this maximum intensity as the mutual peeling strength of each flat part.
7. measure the pressure loss
Manostar differential pressure gauge (minimum scale: 1.0Pa) the mensuration effective area to the former material of filter material is utilized to be 100cm
2and the pressure loss of superficial velocity when being 5.3cm/sec measures.
8. measure the arresting efficiency of the former material of filter material
The test film cut out from the former material of filter material (is overlooked as 100cm
2) arresting efficiency measure.Specifically, the mensuration of arresting efficiency is implemented according to JISB9927 annex (regulation) toilet air filter filter medium method for testing performance, the test of granule capturing rate.As test particle, employ PAO (poly alpha olefin), object particle diameter is 0.15 μm, test wire speed is 5.3cm.
9. the thickness of flank
The thickness of metal slide measure (smallest measured value 0.01mm) to the whole flank on two faces of the former material of filter material is used to measure.Then, using the mean value that calculates according to each measured value thickness as flank.
10. measure the overall arresting efficiency of filter filtration material
Mensuration is implemented according to the granule capturing rate assay method described in JISB9927.As test particle, employ PAO (poly alpha olefin), object particle diameter is 0.15 μm, and the test wind is 0.45m/s.
The local arresting efficiency of 11. mensuration filter filtration materials
Mensuration is implemented according to scanning leak detection (Japanese: walk Check and the leak れ) test described in JISB9927.As test particle, employ PAO (poly alpha olefin), object particle diameter is 0.15 μm, and the test wind is 0.45m/s.
embodiment and comparative example
Use the non-woven fabrics (gas permeability sheet) with the grammes per square metre described in following table 1 in described PTFE sheet (Porous sheet) and described non-woven fabrics (gas permeability sheet), as described, make the former material of filter material.The peel strength of former for filter material material and arresting efficiency are represented in following table 1.Then, as described, kilting processing has been carried out to the former material of this filter material.The height L3 that kilting is processed is represented in following table 1.Afterwards, by forming flank on two faces of the former material of filter material and make the former material of filter material be formed as folded shape as described, thus filter filtration material is defined.The kind of the bonding agent for the formation of flank and the thickness of flank are represented in following table 1.In addition, the overall arresting efficiency of peeling strength mutual for each flat part, filter filtration material and local arresting efficiency are represented in following table 1.
table 1
sum up
According to the comparison of each embodiment and each comparative example, can find out the overall arresting efficiency of each embodiment and local arresting efficiency higher.That is, by the peel strength of former for filter material material and the mutual peeling strength of each flat part being set as the value specified as the present application, can prevent from being formed in the former material of filter material forming filter filtration material peeling off space, therefore, it is possible to prevent from causing the arresting efficiency of filter filtration material to reduce because forming stripping space.
description of reference numerals
1, filter filtration material; 1a, bend; 1b, flat part; 2, the former material of filter material; 2a, porous layer; 2b, substrate layer; 3, interval maintaining part; 3a, flank; A1, bending presumptive area; A2, flat part presumptive area; B1, maintaining part overlapping portion, interval.
Claims (2)
1. a filter filtration material, former for filter material material bends in many places and is formed as folded shape and forms by it, the former material of this filter material comprises porous layer for trapping the particle be filtered contained by gas and is bonded in the substrate layer at least one face of this porous layer, it is characterized in that
This filter filtration material comprises:
Multiple bend, the plurality of bend is formed by being bent by former for described filter material material;
Multiple flat part, the plurality of flat part is formed by the region except multiple bend in the former material of filter material and configures in the mode of face-off; And
Multiple intervals maintaining part, in the side, a face of the former material of filter material, the plurality of interval maintaining part is formed between each flat part, in the another side side of the former material of filter material, this interval maintaining part is formed between each flat part, for keeping the interval between adjacent flat part and adjacent flat part being linked up each other
Each interval maintaining part of each interval maintaining part being formed at the side, a face of the former material of described filter material and the another side side being formed at the former material of filter material to be formed across the mode of each flat part overlap,
Peel strength when porous layer in the former material of filter material and substrate layer are stripped is more than 0.4N, and make each flat part of being linked up by interval maintaining part mutual separated time peeling strength be 0.6N ~ 3N.
2. filter filtration material according to claim 1, is characterized in that,
Arrange to the partial linear across each flat part overlap in each interval maintaining part of each interval maintaining part being formed at the side, a face of the former material of filter material and the another side side being formed at the former material of filter material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010365358.XA CN111514678A (en) | 2013-08-21 | 2014-07-30 | Filter medium |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2013-171609 | 2013-08-21 | ||
| JP2013171609A JP6209393B2 (en) | 2013-08-21 | 2013-08-21 | Filter media |
| PCT/JP2014/070048 WO2015025686A1 (en) | 2013-08-21 | 2014-07-30 | Filter medium |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010365358.XA Division CN111514678A (en) | 2013-08-21 | 2014-07-30 | Filter medium |
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| JP (1) | JP6209393B2 (en) |
| KR (1) | KR102214735B1 (en) |
| CN (2) | CN105377399A (en) |
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| WO (1) | WO2015025686A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109641169A (en) * | 2016-08-26 | 2019-04-16 | 3M创新有限公司 | Fold-type filter element and method of manufacture and use thereof including the fold-type filter medium with edge guard |
| CN111491617A (en) * | 2017-09-29 | 2020-08-04 | 森玛治疗公司 | Cell housing device |
| CN111714972A (en) * | 2019-03-20 | 2020-09-29 | 东丽纤维研究所（中国）有限公司 | Air filtering material containing porous particles |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111565707A (en) | 2017-06-14 | 2020-08-21 | 森玛治疗公司 | Devices and methods for delivering therapeutics |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111514678A (en) | 2020-08-11 |
| TWI644714B (en) | 2018-12-21 |
| WO2015025686A1 (en) | 2015-02-26 |
| TW201511814A (en) | 2015-04-01 |
| JP2015039662A (en) | 2015-03-02 |
| JP6209393B2 (en) | 2017-10-04 |
| KR102214735B1 (en) | 2021-02-10 |
| KR20160043951A (en) | 2016-04-22 |
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