CN108543348A - A kind of MULTILAYER COMPOSITE filter cloth, preparation method and application - Google Patents
A kind of MULTILAYER COMPOSITE filter cloth, preparation method and application Download PDFInfo
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- CN108543348A CN108543348A CN201810270675.6A CN201810270675A CN108543348A CN 108543348 A CN108543348 A CN 108543348A CN 201810270675 A CN201810270675 A CN 201810270675A CN 108543348 A CN108543348 A CN 108543348A
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- 239000004744 fabric Substances 0.000 title claims abstract description 131
- 239000002131 composite material Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 100
- 150000001875 compounds Chemical class 0.000 claims abstract description 28
- 238000005507 spraying Methods 0.000 claims abstract description 24
- 238000007731 hot pressing Methods 0.000 claims abstract description 16
- 239000002759 woven fabric Substances 0.000 claims abstract description 16
- 239000000155 melt Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000004743 Polypropylene Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 18
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 6
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- -1 polypropylene Polymers 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 3
- 241000207961 Sesamum Species 0.000 claims description 3
- 235000003434 Sesamum indicum Nutrition 0.000 claims description 3
- 229920004933 Terylene® Polymers 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 27
- 230000000694 effects Effects 0.000 abstract description 9
- 239000010410 layer Substances 0.000 description 43
- 239000002253 acid Substances 0.000 description 8
- 239000003513 alkali Substances 0.000 description 7
- 239000002585 base Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000001467 acupuncture Methods 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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
-
- 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
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- 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
- B01D2239/0613—Woven
-
- 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
- B01D2239/0618—Non-woven
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2310/00—Treatment by energy or chemical effects
- B32B2310/028—Treatment by energy or chemical effects using vibration, e.g. sonic or ultrasonic
Abstract
A kind of MULTILAYER COMPOSITE filter cloth of present invention offer, preparation method and application, the filter cloth are combined by 2~5 layers of cloth by ultrasonic wave hot pressing, two or more of the cloth in non-woven fabrics and woven fabric；The non-woven fabrics is selected from melt spraying non-woven fabrics, spun-bonded non-woven fabrics, needle punched non-woven fabrics, spunlace non-woven cloth or compound nonwoven cloth；Using spun-bonded non-woven fabrics as outer layer, inner layer at least one layer is needle thorn or spunlace non-woven cloth；The grammes per square metre of the melt spraying non-woven fabrics, spun-bonded non-woven fabrics and compound nonwoven cloth independently is 20~350g/m2；The grammes per square metre of the needle thorn or spunlace non-woven cloth is 100~650g/m2.It is appropriately combined that the present invention selects different non-woven fabrics or woven fabric to carry out, and learns from other's strong points to offset one's weaknesses, makes full use of dissimilar material properties, has both ensured high-precision, in turn ensured high intensity.Filter bag is prepared by the composite filtering cloth, compared with existing product, good filtration effect, intensity is high, and cracky, service life is not long when use.
Description
Technical field
The invention belongs to a kind of filtration art more particularly to MULTILAYER COMPOSITE filter cloth, preparation method and applications.
Background technology
Printed circuit board (PCB), the pad pasting usually in copper-clad plate, exposed development, etching form conductive circuit pattern
Electronic component carrier；Its production process is related to a variety of liquid materials, more containing pollutants such as solid particles, is environmental protection treatment
In one of important topic.It is needed during waste water, exhaust-gas treatment or PCB processing procedures, glue or Printing ink producing using filtering
Bag is filtered purified treatment, the minute solid particles in liquid or gas is removed, to reach environment protection emission requirement or reach raw
Produce product quality requirement.
Currently, generally using polypropylene (PP) or polyester PET non-woven fabrics or woven fabric as filtering material, single layer is produced
Filter bag.According to various processes, non-woven fabrics includes spun-bonded non-woven fabrics, melt spraying non-woven fabrics, spunlace non-woven cloth etc..Wherein, it spins
Although bonded non-woven fabrics, needle thorn or spunlace non-woven cloth and looped fabric intensity are higher, filtering accuracy is poor, and melt spraying non-woven fabrics
Filtering accuracy is high but intensity is poor.Therefore, that there are still filtering accuracies is low for current filter bag, and filter effect is poor or strong
Degree is not high, service life shorter problem.
Invention content
In view of this, a kind of MULTILAYER COMPOSITE filter cloth of the application offer, preparation method and application, by the composite filtering cloth
The filter bag product good filtration effect of preparation, intensity are high, and not cracky when use lasts a long time.
The application provides a kind of MULTILAYER COMPOSITE filter cloth, is combined by ultrasonic wave hot pressing by 2~5 layers of cloth, the cloth
Two or more in non-woven fabrics and woven fabric；The non-woven fabrics is selected from melt spraying non-woven fabrics, spun-bonded non-woven fabrics, acupuncture nonwoven
Cloth, spunlace non-woven cloth or compound nonwoven cloth；
Using spun-bonded non-woven fabrics as outer layer, inner layer at least one layer is needle thorn or spunlace non-woven cloth；
The grammes per square metre of the melt spraying non-woven fabrics, spun-bonded non-woven fabrics and compound nonwoven cloth independently is 20~350g/m2；The needle
The grammes per square metre of thorn or spunlace non-woven cloth is 100~650g/m2。
Preferably, the material of the MULTILAYER COMPOSITE filter cloth is one or more in polypropylene fibre, terylene and polyamide fibre.
Preferably, the thickness of the needle thorn or spunlace non-woven cloth is 1~8mm.
Preferably, the thickness of the needle thorn or spunlace non-woven cloth is 2~5mm, and grammes per square metre is 200~500g/m2。
Preferably, the grammes per square metre of the melt spraying non-woven fabrics, spun-bonded non-woven fabrics and compound nonwoven cloth independently is 50~200g/
m2。
Preferably, it is grid point, sesame point, dot or triangle that dot shape is pressed on the MULTILAYER COMPOSITE filter cloth.
The application provides a kind of preparation method of MULTILAYER COMPOSITE filter cloth, includes the following steps：
2~5 layers of cloth progress ultrasonic wave hot pressing are compound, obtain MULTILAYER COMPOSITE filter cloth；
Two or more of the cloth in non-woven fabrics and woven fabric；The non-woven fabrics is selected from melt spraying non-woven fabrics, spunbond
Non-woven fabrics, needle punched non-woven fabrics, spunlace non-woven cloth or compound nonwoven cloth；
Using spun-bonded non-woven fabrics as outer layer, inner layer at least one layer is needle thorn or spunlace non-woven cloth；
The grammes per square metre of the melt spraying non-woven fabrics, spun-bonded non-woven fabrics and compound nonwoven cloth independently is 20~350g/m2；The needle
The grammes per square metre of thorn or spunlace non-woven cloth is 100~650g/m2。
Preferably, the compound condition of the ultrasonic wave hot pressing includes：Air pressure 4Kg/cm, electric current 0.4 arrive 0.6A, floral whorl pressure
1.5KG, ultrasonic power 1400W.
The application provides the application of MULTILAYER COMPOSITE filter cloth as described above in preparing filter bag.Preferably, described
Filter bag is for the liquid involved by purified treatment PCB processing procedures.
Filter cloth provided by the invention is combined by 2~5 layers of non-woven fabrics or woven fabric by ultrasonic wave hot pressing, wherein
Using spun-bonded non-woven fabrics as outer layer, grammes per square metre is 20~350g/m2；Inner layer at least one layer is needle thorn or spunlace non-woven cloth, grammes per square metre 100
~650g/m2.Laminates of the present invention are integrally formed with ultrasonic compressing, not stratified, do not misplace, and will not fall off filament；Spunbond
Non-woven fabrics provides high intensity protective effect etc. in outer layer, and spun lacing or needle punched non-woven fabrics provide good well-pressed degree, plays support
The effects that.It is appropriately combined that the present invention selects different non-woven fabrics or woven fabric to carry out, and learns from other's strong points to offset one's weaknesses, and makes full use of different materials special
Property, both ensure high-precision, and in turn ensures high intensity.Filter bag is prepared by the composite filtering cloth, compared with existing product, filtering effect
Fruit is good, and intensity is high, and not cracky when use, service life is long, is conducive to application.
Specific implementation mode
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without making creative work belongs to the model that the present invention protects
It encloses.
The present invention provides a kind of MULTILAYER COMPOSITE filter cloths, are combined by ultrasonic wave hot pressing by 2~5 layers of cloth, described
Two or more of cloth in non-woven fabrics and woven fabric；The non-woven fabrics is selected from melt spraying non-woven fabrics, spun-bonded non-woven fabrics, needle and pierces nothing
Woven fabric, spunlace non-woven cloth or compound nonwoven cloth；
Using spun-bonded non-woven fabrics as outer layer, inner layer at least one layer is needle thorn or spunlace non-woven cloth；
The grammes per square metre of the melt spraying non-woven fabrics, spun-bonded non-woven fabrics and compound nonwoven cloth independently is 20~350g/m2；The needle
The grammes per square metre of thorn or spunlace non-woven cloth is 100~650g/m2。
MULTILAYER COMPOSITE filter cloth provided by the invention mainly solves existing filter bag for waste water, dust-containing tail gas, PCB processing procedures
When the earth of positive pole, the production products filtration, purification such as liquid medicine and ink, glue, filter effect is poor, and filter bag intensity is high, the service life
The problems such as shorter.
Filter cloth provided by the invention has multilayered structure, is combined by ultrasonic wave hot pressing by 2~5 layers of cloth.It is described
Two or more of cloth in non-woven fabrics and woven fabric；The non-woven fabrics is selected from melt spraying non-woven fabrics, spun-bonded non-woven fabrics, needle and pierces nothing
Woven fabric, spunlace non-woven cloth or compound nonwoven cloth (such as SMS non-woven fabrics), and Woven filter cloth is selected from known commercially available conventional products
.The material of the MULTILAYER COMPOSITE filter cloth is preferably selected from one kind or more in polypropylene fibre (PP), terylene (PET) and polyamide fibre (PA)
Kind, more preferably PP.
In the present invention, the grammes per square metre of the melt spraying non-woven fabrics, spun-bonded non-woven fabrics and compound nonwoven cloth independently be 20~
350g/m2；It is preferred that 50~200g/m2.The grammes per square metre of the needle thorn or spunlace non-woven cloth is 100~650g/m2, preferably 200~
500g/m2.The thickness of the needle thorn or spunlace non-woven cloth is preferably 1mm~8mm；Needle described in the embodiment of the present invention pierces or spun lacing
The thickness of non-woven fabrics is 2mm~5mm, and grammes per square metre is 200~500g/m2。
In the present invention, the MULTILAYER COMPOSITE filter cloth is using spun-bonded non-woven fabrics as outer layer, inner layer at least one layer be needle pierce or
Spunlace non-woven cloth.It is compound that this product selects the cloth of the different filtering accuracies of various processes manufacture to carry out, according to a variety of materials
The advantages of, it chooses two or more and is combined, product good filtration effect, Air permenbility is high, and intensity is high, is resistant to 15% acid
Alkaline solution corrodes, and not cracky when use lasts a long time.
In an embodiment of the present invention, multilayer cloth is pressed together with ultrasonic equipment, pressing select be grid select, sesame
Point, dot or triangle point, midpoint are real point or hollow dots, mainly play edge sealing.In addition label can be added such as
Company LOGO or pattern, MULTILAYER COMPOSITE filter cloth can imprint company LOGO or pattern while compound, filter bag made to be made
Product are convenient for identification and distinguish.
Meanwhile MULTILAYER COMPOSITE filter cloth of the present invention is integrally formed with ultrasonic compressing, it is not stratified, do not misplace, in turn
Prepare the simple for process of filter bag.In addition, MULTILAYER COMPOSITE filter cloth of the present invention does not take off filament, when use will not fall off into
Enter in pending liquid and causes secondary pollution.
This application provides a kind of preparation methods of MULTILAYER COMPOSITE filter cloth, include the following steps：
2~5 layers of cloth progress ultrasonic wave hot pressing are compound, obtain MULTILAYER COMPOSITE filter cloth；
The cloth is one or more in non-woven fabrics and woven fabric；The non-woven fabrics is selected from melt spraying non-woven fabrics, spunbond
Non-woven fabrics, needle punched non-woven fabrics, spunlace non-woven cloth or compound nonwoven cloth；
Using spun-bonded non-woven fabrics as outer layer, inner layer at least one layer is needle thorn or spunlace non-woven cloth；
The grammes per square metre of the melt spraying non-woven fabrics, spun-bonded non-woven fabrics and compound nonwoven cloth independently is 20~350g/m2；The needle
The grammes per square metre of thorn or spunlace non-woven cloth is 100~650g/m2。
The present invention utilizes ultrasonic wave hot pressing, and the pressing of 2~5 layers of cloth is integrally formed, obtained MULTILAYER COMPOSITE filter cloth regardless of
Layer does not misplace, and does not fall off filament.Wherein, material, multilayered structure, parameter of the MULTILAYER COMPOSITE filter cloth etc. such as institute above
It states, details are not described herein.In the preferred implementation of the present invention, the compound condition of the ultrasonic wave hot pressing includes：Air pressure 4Kg/cm,
Electric current 0.4 arrives 0.6A, floral whorl pressure 1.5KG, ultrasonic power 1400W.
In addition, the application provides the application of MULTILAYER COMPOSITE filter cloth as described above in preparing filter bag.
Specifically, the filter bag is formed by above-mentioned composite filtering cloth with sewing sewer, or with ultrasonic equipment pressure
It closes.In some embodiments of the invention, the bag body of the filter bag is provided with mouth according to customer requirement, and is stitched at sack
Bandage processed.In other embodiments of the present invention, the bag body of the filter bag is not open, with ultrasonic bonding one at sack
A plastic tube or stainless steel coil, for filter bag using when fix.
In an embodiment of the present invention, the liquid that the filter bag can be used for involved by purified treatment PCB processing procedures.Wherein,
The solid grain contamination content of liquid involved by PCB processing procedures is generally in 3-6g/L ranges；Acid-base property 10% (represents basic species
Matter content or amount of acidic substances are that 10%), temperature is 60 DEG C.Compared with existing filter bag product, product filtering effect of the present invention
Fruit is good, and intensity is high, and not cracky when use, service life is long, can be preferably applied to the fluid purification processing involved by PCB processing procedures
In.
In order to further illustrate the present invention, with reference to embodiment to MULTILAYER COMPOSITE filter cloth provided by the invention, its system
Preparation Method and application are described in detail.
Embodiment 1
Composite filtering cloth by 2 layers it is non-woven fabric compounded form, one layer of 200g/m2PP spun-bonded non-woven fabrics, one layer of 8mm thickness, gram
Weight 250g/m2PP needle punched non-woven fabrics；Wherein eedle-punched non-wovens trowel finish outside, there is that hair side is opposite with spun-bonded non-woven fabrics, with ultrasound
Wave pressure closes small side's point and is combined with each other.Ultrasonic wave hot pressing parameters include：Air pressure 4Kg/cm, electric current 0.4 arrive 0.6A, floral whorl pressure
Power 1.5KG, ultrasonic power 1400W.
The composite filtering cloth is tested for the property；Wherein, the test equipment of Air permenbility fabric breathability ---
Gellowen G021 air permeability testers are tested, and GB/T 5453 is complied with standard.Strength test is carried out with puller system；It is acidproof, resistance to
Alkaline test method is：Under the conditions of 60 DEG C, 15% sulfuric acid of mass concentration or soaking with sodium hydroxide 5 days, filter bag is without breakage, cloth
Without discoloration.The results such as intensity are as follows：
Fracture strength：Warp-wise：11.5KN/m2；
Broadwise：9.7KN/m2；
Rupture strength：0.33KN/m2；
Air permenbility：20L/m2；
Acid and alkali resistance：Resistance to 15% acid-base property solution corrosion.
Embodiment 2
Composite filtering cloth is combined by 5 layers of PP cloth, is followed successively by 20g/m from outside to inside2PP spun-bonded non-woven fabrics, 50g/m2PP
Melt spraying non-woven fabrics, 2mm thickness and 270g/m2Spunlace non-woven cloth, 150g/m2Melt spraying non-woven fabrics and 80g/m2Spun-bonded non-woven fabrics, with super
Sound wave pressing dot is combined with each other.Ultrasonic wave hot pressing parameters include：Air pressure 4Kg/cm, electric current 0.4 arrive 0.6A, floral whorl
Pressure 1.5KG, ultrasonic power 1400W.
The composite filtering cloth is tested for the property, method is with embodiment 1, and test result is as follows：
Fracture strength：Warp-wise：14.7KN/m2；
Broadwise：11.6KN/m2；
Rupture strength：0.5KN/m2；
Air permenbility：35L/m2；
Acid and alkali resistance：Resistance to 15% acid-base property solution corrosion.
Embodiment 3
Composite filtering cloth is combined by 3 layers of different cloth, is followed successively by 100g/m from outside to inside2PP spun-bonded non-woven fabrics,
120g/m2PP melt spraying non-woven fabrics, 4mm thickness and 270g/m2Spunlace non-woven cloth, be combined with each other with ultrasonic compressing dot.It is super
Sound wave hot pressing parameters include：Air pressure 4Kg/cm, electric current 0.4 arrive 0.6A, floral whorl pressure 1.5KG, ultrasonic power 1400W.
The composite filtering cloth is tested for the property, method is with embodiment 1, and test result is as follows：
Fracture strength：Warp-wise：12.8KN/m2；
Broadwise：10.5KN/m2；
Rupture strength：0.38KN/m2；
Air permenbility：25L/m2；
Acid and alkali resistance：Resistance to 15% acid-base property solution corrosion.
Comparative example 1
Single layer filter cloth is one layer of grammes per square metre 150g/m2Spun-bonded non-woven fabrics；Performance test methods are the same as embodiment 1, test knot
Fruit is as follows：
Fracture strength：Warp-wise：8.6KN/m2；
Broadwise：6.5KN/m2；
Rupture strength：0.2KN/m2；
Air permenbility：10L/m2；
Acid and alkali resistance：Resistance to 15% acid-base property solution corrosion.
Comparative example 2
Composite filtering cloth is combined by 2 layers of spun-bonded non-woven fabrics, one layer of 200g/m2PP spun-bonded non-woven fabrics, one layer of 150g/
m2PP spun-bonded non-woven fabrics；Combination process is that ultrasonic wave same as Example 1 is compound.
Performance test methods are with embodiment 1, and test result is as follows：.
Fracture strength：Warp-wise：8.8KN/m2；
Broadwise：6.8KN/m2；
Rupture strength：0.3KN/m2；
Air permenbility：12L/m2；
Acid and alkali resistance：Resistance to 15% acid-base property solution corrosion.
Comparative example 3
Composite filtering cloth is combined by 2 layers of spun-bonded non-woven fabrics, one layer of 200g/m2PP spun-bonded non-woven fabrics, one layer of 150g/
m2PP melt spraying non-woven fabrics；Combination process is that ultrasonic wave same as Example 1 is compound.
Performance test methods are with embodiment 1, and test result is as follows：.
Fracture strength：Warp-wise：8.9KN/m2；
Broadwise：7.0KN/m2；
Rupture strength：0.4KN/m2；
Air permenbility：14L/m2；
Acid and alkali resistance：Resistance to 15% acid-base property solution corrosion.
As seen from the above embodiment, filter cloth provided by the invention passes through ultrasonic heat by 2~5 layers of non-woven fabrics or woven fabric
Pressure is combined, wherein using spun-bonded non-woven fabrics as outer layer, grammes per square metre is 20~350g/m2；Inner layer at least one layer is needle thorn or spun lacing
Non-woven fabrics, grammes per square metre are 100~650g/m2.It is appropriately combined that the present invention selects different non-woven fabrics or woven fabric to carry out, and takes long benefit
It is short, dissimilar material properties are made full use of, have both ensured high-precision, Air permenbility is high, in turn ensures high intensity.It is fabric by the combined filtration
Standby filter bag, compared with existing product, good filtration effect, intensity is high, and not cracky when use, resistance to acid and alkali is good, service life
It is long, it is conducive to application.
The above is only a preferred embodiment of the present invention, it is noted that for making the professional technique of the art
Personnel are that by various modifications to these embodiments without departing from the technical principles of the invention, and these
Modification also should be regarded as the range that the present invention should protect.
Claims (10)
1. a kind of MULTILAYER COMPOSITE filter cloth is combined by 2~5 layers of cloth by ultrasonic wave hot pressing, the cloth be selected from non-woven fabrics and
Two or more in woven fabric；The non-woven fabrics is selected from melt spraying non-woven fabrics, spun-bonded non-woven fabrics, needle punched non-woven fabrics, spun lacing nonwoven
Cloth or compound nonwoven cloth；
Using spun-bonded non-woven fabrics as outer layer, inner layer at least one layer is needle thorn or spunlace non-woven cloth；
The grammes per square metre of the melt spraying non-woven fabrics, spun-bonded non-woven fabrics and compound nonwoven cloth independently is 20~350g/m2；Needle thorn or
The grammes per square metre of spunlace non-woven cloth is 100~650g/m2。
2. MULTILAYER COMPOSITE filter cloth according to claim 1, which is characterized in that the material of the MULTILAYER COMPOSITE filter cloth is selected
From one or more in polypropylene fibre, terylene and polyamide fibre.
3. MULTILAYER COMPOSITE filter cloth according to claim 1, which is characterized in that the thickness of the needle thorn or spunlace non-woven cloth
For 1~8mm.
4. MULTILAYER COMPOSITE filter cloth according to claim 3, which is characterized in that the thickness of the needle thorn or spunlace non-woven cloth
For 2~5mm, grammes per square metre is 200~500g/m2。
5. MULTILAYER COMPOSITE filter cloth according to claim 1, which is characterized in that the melt spraying non-woven fabrics, spun-bonded non-woven fabrics
It independently is 50~200g/m with the grammes per square metre of compound nonwoven cloth2。
6. MULTILAYER COMPOSITE filter cloth according to claim 1, which is characterized in that pressed a little on the MULTILAYER COMPOSITE filter cloth
Shape is grid point, sesame point, dot or triangle.
7. a kind of preparation method of MULTILAYER COMPOSITE filter cloth, includes the following steps：
2~5 layers of cloth progress ultrasonic wave hot pressing are compound, obtain MULTILAYER COMPOSITE filter cloth；
Two or more of the cloth in non-woven fabrics and woven fabric；The non-woven fabrics is selected from melt spraying non-woven fabrics, spunbond nonwoven
Cloth, needle punched non-woven fabrics, spunlace non-woven cloth or compound nonwoven cloth；
Using spun-bonded non-woven fabrics as outer layer, inner layer at least one layer is needle thorn or spunlace non-woven cloth；
The grammes per square metre of the melt spraying non-woven fabrics, spun-bonded non-woven fabrics and compound nonwoven cloth independently is 20~350g/m2；Needle thorn or
The grammes per square metre of spunlace non-woven cloth is 100~650g/m2。
8. preparation method according to claim 7, which is characterized in that the compound condition of the ultrasonic wave hot pressing includes：Gas
4Kg/cm, electric current 0.4 is pressed to arrive 0.6A, floral whorl pressure 1.5KG, ultrasonic power 1400W.
9. such as application of the MULTILAYER COMPOSITE filter cloth according to any one of claims 1 to 6 in preparing filter bag.
10. application according to claim 9, which is characterized in that the filter bag is for involved by purified treatment PCB processing procedures
Liquid.
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Application publication date: 20180918 |