CN109925794A - A kind of bacteriological filter bag and preparation method thereof that filter effect is good - Google Patents
A kind of bacteriological filter bag and preparation method thereof that filter effect is good Download PDFInfo
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- CN109925794A CN109925794A CN201910275846.9A CN201910275846A CN109925794A CN 109925794 A CN109925794 A CN 109925794A CN 201910275846 A CN201910275846 A CN 201910275846A CN 109925794 A CN109925794 A CN 109925794A
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Abstract
The invention discloses a kind of good bacteriological filter bags of filter effect, its raw material is as follows in parts by weight: 40-50 parts of polypropylene fibre, 20-30 parts of polyester fiber, 10-14 parts of homopolyacrylonitrile fibre, 15-17 parts of aramid fiber, 30-40 parts of polytetrafluoroethylene fibre, 20-30 parts of viscose rayon, 10-20 parts of glass fibre, the accounting and preparation technology parameter that the present invention passes through each component of the formula of the good bacteriological filter bag of strict control filter effect, using polypropylene fibre, polyester fiber, homopolyacrylonitrile fibre, aramid fiber, fibrillated polytetrafluoroethylene, the complex structure of filament of the mixed form of viscose rayon and glass fibre, both the original performance of material had been remained, the high temperature resistant and corrosion resistance of filter bag made of also improving simultaneously, the scope of application is wider, and for thin The filter effect of bacterium promotes 20% or more, while the use intensity of the filter bag is enhanced compared to traditional filter bag, also improves the service life of filter bag.
Description
Technical field
The present invention relates to bacteriological filter bag technique field, the good bacteriological filter bag of specially a kind of filter effect, while this
Invention further relates to a kind of preparation method of bacteriological filter bag that filter effect is good.
Background technique
Filter bag is as filter element, and it is the key that a ring in filter process that filter bag, which draws, and filter bag quality is largely
On determine filter effect.Filter bag material has: nylon, polypropylene, polyester, stainless steel, polytetrafluoro etc..Size is according to filter
Differentiation has: No. 2 bags, No. 1 bag, No. 5 bags, No. 4 bags, No. 3 bags (descending).
Existing bacteriological filter bag material property is single, causes filter bag that cannot meet high temperature resistant and corrosion-resistant etc. multiple simultaneously
Performance, narrow scope of application, filter bag are also unsatisfactory to the filter effect of bacterium, and the service life used is not high.
Summary of the invention
The purpose of the present invention is to provide a kind of good bacteriological filter bags and preparation method thereof of filter effect, both remain material
The original performance of material, while the high temperature resistant and corrosion resistance of manufactured filter bag are also improved, the scope of application is wider, and right
20% or more is promoted in the filter effect of bacterium, while the use intensity of the filter bag is enhanced compared to traditional filter bag, is also mentioned
The service life of filter bag is risen, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme: a kind of good bacteriological filter bag of filter effect, former
Expect as follows in parts by weight: 40-50 parts of polypropylene fibre, 20-30 parts of polyester fiber, 10-14 parts of homopolyacrylonitrile fibre, aramid fiber
15-17 parts of fiber, 30-40 parts of polytetrafluoroethylene fibre, 20-30 parts of viscose rayon, 10-20 parts of glass fibre.
Preferably, the polypropylene fibre, polyester fiber, homopolyacrylonitrile fibre, aramid fiber, fibrillated polytetrafluoroethylene,
Viscose rayon and glass fiber diameter are at 2-10 μm.
Preferably, the viscose rayon is koplon, and dry strength is more than 44.1cN/tex.
Preferably, the softening point of the glass fibre is 500-750 DEG C, density 2.4-2.76g/cm3。
The present invention also provides a kind of preparation methods of the good bacteriological filter bag of filter effect, include the following steps:
S1: feeding, by polypropylene fibre, polyester fiber, homopolyacrylonitrile fibre, aramid fiber, polytetrafluoroethylene fibre,
Viscose rayon and glass fibre weigh in parts by weight, spare;
S2: fiber opening first tentatively loosens the fibrous raw material of step S1, according to the requirement of technique by big fibre
The shredding of dimension group, while the fiber of various composition in raw material being made to obtain uniform mixing, then carry out smart shredding, fibre of further loosening
Dimension, composite fibre ingredient;
S3: fiber combing, fiber, into air pressure cotton box, feed carding machine, into combing after shredding and being sufficiently mixed
By winning combing of the effect realization to fiber between stripping roller and cylinder after machine, finally it is transferred out to form fiber by doffer
Net, the web by combing is frivolous single net at this time;
S4: lapping, fibre web enter lapping machine, lapping carriage by tooth form V belt translation, by the fiber list net of carding machine output into
Row cross folding makes the multilayer fibre web with required breadth and unit grammes per square metre, for next procedure use;
S5: needle thorn compacting, fibre web enter needing machine, there is a large amount of pricker for having acicular hook in needing machine, anti-to web
It is punctured again, web causes fiber upper and lower displacement when pricker punctures repeatedly in fibre web by laying repeatedly, generates and squeezes
Pressure, makes the fiber in fibre web draw close and be compressed, and frictional force increases between fiber, and intensity increases, and being formed has certain strength close
The filter bag nonwovens of degree;
S6: filtrate post-processing, the specific steps are as follows:
A: singing and calendering, becomes smooth on one side using what high temperature or the method rolled made filtrate;
B: thermal finalization processing will handle smooth filtrate and pre-process by high temperature, and weaving filtrate is shunk under high temperature environment
The variation for causing filter bag size keeps the stabilization of size;
C: filtrate is put into progress waterproof and oilproof processing in waterproofing agent and oil-proofing agent by waterproof and oilproof processing;
D: filtrate is placed in PTFE solution and infiltrates 2-3h, then dried by dipping;
S7: filtrate is cut, and by treated, filtrate is put on cutter is cut out according to the filter bag size of different size;
S8: the sewing of filter bag, the specific steps are as follows:
A: the production of elastic ring determined by filtrate cutting length, elastic ring center away from deviation control ± 0.5mm it
It is interior, elastic ring width between 19-30mm, the riveting of elastic ring joint to just, it is straight, smooth;
B: the production and sewing of spill groove bar, for spill groove bar using professional stitching sewing machine, baltimore groove groove width is uniform
Unanimously, when spill groove bar is bonded with elastic ring that the center of slot is corresponding with the elastic center of ring width, and joint groove pair
Just;
C: the production and sewing of sack, sack blanking be parallelogram, be first seamed into tubular, be packed into elastic ring with
When spill bowl assembly, the neat of its edge is paid attention to, guarantee that loading spill groove bar time slot is wide not there is a phenomenon where narrowing, with time delay week
To being sewed with one week suture as close to elastic ring and baltimore groove module edge, without crooked phenomenon when sack and bag body sew,
Stitch three contours;
D: the production and sewing at bag bottom, bag bottom are sewed with reinforcing layer, and highly in 60-100mm, reinforcing layer is first seamed into tubular,
Then it is sewn to the outside of bottom, and joint close stitching and the joint close gap stitching of filter bag body are staggered, the circumferential of reinforcing layer uses list
Needle or crosspointer sew 1-2 weeks;
S9: the sewing of bag body, bag body sew its stitching using 3-needle 6-thread machine and answer that straight no flotation line, wire jumper, slide down phenomenon,
Its needle gage is between 3.3-4.2mm, and outermost side seam line mark is away from edge 2-3mm, and stitching easily twists existing when sewing longer filter bag
As guaranteeing the synchronous seam row of two panels up and down during sewing, obtaining the good bacteriological filter bag of the filter effect.
Preferably, the heat setting temperature of filtrate is 150-240 DEG C in the step S6.
Preferably, in the step S8 when production and sewing of sack needle gage in 3.3-4.2mm.
Preferably, in the step S8 bag bottom production and sewing using single needle stitch then suture spacing control in 4-
5mm, and outermost side seam line stitching has the distance of 4-5mm away from edge.
Compared with prior art, the beneficial effects of the present invention are: the good bacterium mistake of the strict control of the present invention filter effect
Filter bag and preparation method thereof passes through the accounting and system of each component of the formula of the good bacteriological filter bag of strict control filter effect
Standby technological parameter, using polypropylene fibre, polyester fiber, homopolyacrylonitrile fibre, aramid fiber, fibrillated polytetrafluoroethylene, viscose glue
The complex structure of filament of the mixed form of fiber and glass fibre, had both remained the original performance of material, while also improving system
At filter bag high temperature resistant and corrosion resistance, the scope of application is wider, and for the filter effect of bacterium promoted 20% with
On, while the use intensity of the filter bag is enhanced compared to traditional filter bag, also improves the service life of filter bag.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
A kind of good bacteriological filter bag of filter effect provided by the invention, base-material composition and data in specific embodiment account for
Than such as the following table 1:
Embodiment 1
A kind of bacteriological filter bag that filter effect is good, raw material are as follows in parts by weight: 40 parts of polypropylene fibre, polyester is fine
20 parts of dimension, 10 parts of homopolyacrylonitrile fibre, 15 parts of aramid fiber, 30 parts of polytetrafluoroethylene fibre, 20 parts of viscose rayon, glass fibers
10 parts of dimension, the polypropylene fibre, polyester fiber, homopolyacrylonitrile fibre, aramid fiber, fibrillated polytetrafluoroethylene, viscose rayon
With glass fiber diameter at 2 μm, the viscose rayon is koplon, and dry strength is more than 44.1cN/tex, institute
The softening point for stating glass fibre is 500 DEG C, density 2.4g/cm3。
The present invention also provides a kind of preparation methods of the good bacteriological filter bag of filter effect, include the following steps:
S1: feeding, by polypropylene fibre, polyester fiber, homopolyacrylonitrile fibre, aramid fiber, polytetrafluoroethylene fibre,
Viscose rayon and glass fibre weigh in parts by weight, spare;
S2: fiber opening first tentatively loosens the fibrous raw material of step S1, according to the requirement of technique by big fibre
The shredding of dimension group, while the fiber of various composition in raw material being made to obtain uniform mixing, then carry out smart shredding, fibre of further loosening
Dimension, composite fibre ingredient;
S3: fiber combing, fiber, into air pressure cotton box, feed carding machine, into combing after shredding and being sufficiently mixed
By winning combing of the effect realization to fiber between stripping roller and cylinder after machine, finally it is transferred out to form fiber by doffer
Net, the web by combing is frivolous single net at this time;
S4: lapping, fibre web enter lapping machine, lapping carriage by tooth form V belt translation, by the fiber list net of carding machine output into
Row cross folding makes the multilayer fibre web with required breadth and unit grammes per square metre, for next procedure use;
S5: needle thorn compacting, fibre web enter needing machine, there is a large amount of pricker for having acicular hook in needing machine, anti-to web
It is punctured again, web causes fiber upper and lower displacement when pricker punctures repeatedly in fibre web by laying repeatedly, generates and squeezes
Pressure, makes the fiber in fibre web draw close and be compressed, and frictional force increases between fiber, and intensity increases, and being formed has certain strength close
The filter bag nonwovens of degree;
S6: filtrate post-processing, the specific steps are as follows:
A: singing and calendering, becomes smooth on one side using what high temperature or the method rolled made filtrate;
B: thermal finalization processing will handle smooth filtrate and pre-process by high temperature, and weaving filtrate is shunk under high temperature environment
The variation for causing filter bag size keeps the stabilization of size;
C: filtrate is put into progress waterproof and oilproof processing in waterproofing agent and oil-proofing agent by waterproof and oilproof processing;
D: filtrate is placed in PTFE solution and infiltrates 2h, then dried by dipping;
S7: filtrate is cut, and by treated, filtrate is put on cutter is cut out according to the filter bag size of different size;
S8: the sewing of filter bag, the specific steps are as follows:
A: the production of elastic ring determined by filtrate cutting length, elastic ring center away from deviation control ± 0.5mm it
It is interior, elastic ring width in 19mm, the riveting of elastic ring joint to just, it is straight, smooth;
B: the production and sewing of spill groove bar, for spill groove bar using professional stitching sewing machine, baltimore groove groove width is uniform
Unanimously, when spill groove bar is bonded with elastic ring that the center of slot is corresponding with the elastic center of ring width, and joint groove pair
Just;
C: the production and sewing of sack, sack blanking be parallelogram, be first seamed into tubular, be packed into elastic ring with
When spill bowl assembly, the neat of its edge is paid attention to, guarantee that loading spill groove bar time slot is wide not there is a phenomenon where narrowing, with time delay week
To being sewed with one week suture as close to elastic ring and baltimore groove module edge, without crooked phenomenon when sack and bag body sew,
Stitch three contours;
D: the production and sewing at bag bottom, bag bottom are sewed with reinforcing layer, highly in 60mm, reinforcing layer are first seamed into tubular, then
Be sewn to the outside of bottom, and joint close stitching and the joint close gap stitching of filter bag body be staggered, the circumferential direction of reinforcing layer using single needle or
Crosspointer sews 1 week;
S9: the sewing of bag body, bag body sew its stitching using 3-needle 6-thread machine and answer that straight no flotation line, wire jumper, slide down phenomenon,
Its needle gage is between 3.3mm, and outermost side seam line mark is away from edge 2mm, and stitching easily twists phenomenon when sewing longer filter bag, is stitching
Guarantee the synchronous seam row of two panels up and down during system, obtains the good bacteriological filter bag of the filter effect.
The heat setting temperature of filtrate is 150 DEG C in the step S6, the production of sack and sewing hour hands in the step S8
Production and sewing away from the bag bottom in 3.3mm, the step S8 are controlled in 4mm, and most using the spacing of single needle stitch then suture
Outside suture stitching has the distance of 4-5mm away from edge.
Embodiment 2
A kind of bacteriological filter bag that filter effect is good, raw material are as follows in parts by weight: 45 parts of polypropylene fibre, polyester is fine
25 parts of dimension, 12 parts of homopolyacrylonitrile fibre, 16 parts of aramid fiber, 35 parts of polytetrafluoroethylene fibre, 25 parts of viscose rayon, glass fibers
15 parts of dimension, the polypropylene fibre, polyester fiber, homopolyacrylonitrile fibre, aramid fiber, fibrillated polytetrafluoroethylene, viscose rayon
With glass fiber diameter at 6 μm, the viscose rayon is koplon, and dry strength is more than 44.1cN/tex, institute
The softening point for stating glass fibre is 575 DEG C, density 2.58g/cm3。
The present invention also provides a kind of preparation methods of the good bacteriological filter bag of filter effect, include the following steps:
S1: feeding, by polypropylene fibre, polyester fiber, homopolyacrylonitrile fibre, aramid fiber, polytetrafluoroethylene fibre,
Viscose rayon and glass fibre weigh in parts by weight, spare;
S2: fiber opening first tentatively loosens the fibrous raw material of step S1, according to the requirement of technique by big fibre
The shredding of dimension group, while the fiber of various composition in raw material being made to obtain uniform mixing, then carry out smart shredding, fibre of further loosening
Dimension, composite fibre ingredient;
S3: fiber combing, fiber, into air pressure cotton box, feed carding machine, into combing after shredding and being sufficiently mixed
By winning combing of the effect realization to fiber between stripping roller and cylinder after machine, finally it is transferred out to form fiber by doffer
Net, the web by combing is frivolous single net at this time;
S4: lapping, fibre web enter lapping machine, lapping carriage by tooth form V belt translation, by the fiber list net of carding machine output into
Row cross folding makes the multilayer fibre web with required breadth and unit grammes per square metre, for next procedure use;
S5: needle thorn compacting, fibre web enter needing machine, there is a large amount of pricker for having acicular hook in needing machine, anti-to web
It is punctured again, web causes fiber upper and lower displacement when pricker punctures repeatedly in fibre web by laying repeatedly, generates and squeezes
Pressure, makes the fiber in fibre web draw close and be compressed, and frictional force increases between fiber, and intensity increases, and being formed has certain strength close
The filter bag nonwovens of degree;
S6: filtrate post-processing, the specific steps are as follows:
A: singing and calendering, becomes smooth on one side using what high temperature or the method rolled made filtrate;
B: thermal finalization processing will handle smooth filtrate and pre-process by high temperature, and weaving filtrate is shunk under high temperature environment
The variation for causing filter bag size keeps the stabilization of size;
C: filtrate is put into progress waterproof and oilproof processing in waterproofing agent and oil-proofing agent by waterproof and oilproof processing;
D: filtrate is placed in PTFE solution and infiltrates 2.5h, then dried by dipping;
S7: filtrate is cut, and by treated, filtrate is put on cutter is cut out according to the filter bag size of different size;
S8: the sewing of filter bag, the specific steps are as follows:
A: the production of elastic ring determined by filtrate cutting length, elastic ring center away from deviation control ± 0.5mm it
It is interior, elastic ring width in 24.5mm, the riveting of elastic ring joint to just, it is straight, smooth;
B: the production and sewing of spill groove bar, for spill groove bar using professional stitching sewing machine, baltimore groove groove width is uniform
Unanimously, when spill groove bar is bonded with elastic ring that the center of slot is corresponding with the elastic center of ring width, and joint groove pair
Just;
C: the production and sewing of sack, sack blanking be parallelogram, be first seamed into tubular, be packed into elastic ring with
When spill bowl assembly, the neat of its edge is paid attention to, guarantee that loading spill groove bar time slot is wide not there is a phenomenon where narrowing, with time delay week
To being sewed with one week suture as close to elastic ring and baltimore groove module edge, without crooked phenomenon when sack and bag body sew,
Stitch three contours;
D: the production and sewing at bag bottom, bag bottom are sewed with reinforcing layer, highly in 80mm, reinforcing layer are first seamed into tubular, then
Be sewn to the outside of bottom, and joint close stitching and the joint close gap stitching of filter bag body be staggered, the circumferential direction of reinforcing layer using single needle or
Crosspointer sews 1 week;
S9: the sewing of bag body, bag body sew its stitching using 3-needle 6-thread machine and answer that straight no flotation line, wire jumper, slide down phenomenon,
Its needle gage is between 3.75mm, and outermost side seam line mark is away from edge 2.5mm, and stitching easily twists phenomenon when sewing longer filter bag,
Guarantee the synchronous seam row of two panels up and down during sewing, obtains the good bacteriological filter bag of the filter effect.
The heat setting temperature of filtrate is 195 DEG C in the step S6, the production of sack and sewing hour hands in the step S8
Away from 3.75mm, the step S8 bag bottom production and sewing using single needle stitch then suture spacing control in 4.5mm, and
Outermost side seam line stitching has the distance of 4.5mm away from edge.
Embodiment 3
A kind of bacteriological filter bag that filter effect is good, raw material are as follows in parts by weight: 50 parts of polypropylene fibre, polyester is fine
30 parts of dimension, 14 parts of homopolyacrylonitrile fibre, 17 parts of aramid fiber, 40 parts of polytetrafluoroethylene fibre, 30 parts of viscose rayon, glass fibers
20 parts of dimension, the polypropylene fibre, polyester fiber, homopolyacrylonitrile fibre, aramid fiber, fibrillated polytetrafluoroethylene, viscose rayon
With glass fiber diameter at 10 μm, the viscose rayon is koplon, and dry strength is more than 44.1cN/tex, institute
The softening point for stating glass fibre is 750 DEG C, density 2.76g/cm3。
The present invention also provides a kind of preparation methods of the good bacteriological filter bag of filter effect, include the following steps:
S1: feeding, by polypropylene fibre, polyester fiber, homopolyacrylonitrile fibre, aramid fiber, polytetrafluoroethylene fibre,
Viscose rayon and glass fibre weigh in parts by weight, spare;
S2: fiber opening first tentatively loosens the fibrous raw material of step S1, according to the requirement of technique by big fibre
The shredding of dimension group, while the fiber of various composition in raw material being made to obtain uniform mixing, then carry out smart shredding, fibre of further loosening
Dimension, composite fibre ingredient;
S3: fiber combing, fiber, into air pressure cotton box, feed carding machine, into combing after shredding and being sufficiently mixed
By winning combing of the effect realization to fiber between stripping roller and cylinder after machine, finally it is transferred out to form fiber by doffer
Net, the web by combing is frivolous single net at this time;
S4: lapping, fibre web enter lapping machine, lapping carriage by tooth form V belt translation, by the fiber list net of carding machine output into
Row cross folding makes the multilayer fibre web with required breadth and unit grammes per square metre, for next procedure use;
S5: needle thorn compacting, fibre web enter needing machine, there is a large amount of pricker for having acicular hook in needing machine, anti-to web
It is punctured again, web causes fiber upper and lower displacement when pricker punctures repeatedly in fibre web by laying repeatedly, generates and squeezes
Pressure, makes the fiber in fibre web draw close and be compressed, and frictional force increases between fiber, and intensity increases, and being formed has certain strength close
The filter bag nonwovens of degree;
S6: filtrate post-processing, the specific steps are as follows:
A: singing and calendering, becomes smooth on one side using what high temperature or the method rolled made filtrate;
B: thermal finalization processing will handle smooth filtrate and pre-process by high temperature, and weaving filtrate is shunk under high temperature environment
The variation for causing filter bag size keeps the stabilization of size;
C: filtrate is put into progress waterproof and oilproof processing in waterproofing agent and oil-proofing agent by waterproof and oilproof processing;
D: filtrate is placed in PTFE solution and infiltrates 3h, then dried by dipping;
S7: filtrate is cut, and by treated, filtrate is put on cutter is cut out according to the filter bag size of different size;
S8: the sewing of filter bag, the specific steps are as follows:
A: the production of elastic ring determined by filtrate cutting length, elastic ring center away from deviation control ± 0.5mm it
It is interior, elastic ring width in 30mm, the riveting of elastic ring joint to just, it is straight, smooth;
B: the production and sewing of spill groove bar, for spill groove bar using professional stitching sewing machine, baltimore groove groove width is uniform
Unanimously, when spill groove bar is bonded with elastic ring that the center of slot is corresponding with the elastic center of ring width, and joint groove pair
Just;
C: the production and sewing of sack, sack blanking be parallelogram, be first seamed into tubular, be packed into elastic ring with
When spill bowl assembly, the neat of its edge is paid attention to, guarantee that loading spill groove bar time slot is wide not there is a phenomenon where narrowing, with time delay week
To being sewed with one week suture as close to elastic ring and baltimore groove module edge, without crooked phenomenon when sack and bag body sew,
Stitch three contours;
D: the production and sewing at bag bottom, bag bottom are sewed with reinforcing layer, highly in 100mm, reinforcing layer are first seamed into tubular, then
Be sewn to the outside of bottom, and joint close stitching and the joint close gap stitching of filter bag body be staggered, the circumferential direction of reinforcing layer using single needle or
Crosspointer sews 2 weeks;
S9: the sewing of bag body, bag body sew its stitching using 3-needle 6-thread machine and answer that straight no flotation line, wire jumper, slide down phenomenon,
Its needle gage is between 4.2mm, and outermost side seam line mark is away from edge 3mm, and stitching easily twists phenomenon when sewing longer filter bag, is stitching
Guarantee the synchronous seam row of two panels up and down during system, obtains the good bacteriological filter bag of the filter effect.
The heat setting temperature of filtrate is 240 DEG C in the step S6, the production of sack and sewing hour hands in the step S8
Production and sewing away from the bag bottom in 4.2mm, the step S8 are controlled in 5mm, and most using the spacing of single needle stitch then suture
Outside suture stitching has the distance of 5mm away from edge.
The good bacteriological filter bag of a kind of filter effect provided by the invention, for the filter of common Single Fiber type on the market
Bag is compared with the compound filter bag embodiment of the present invention, see the table below 2:
It can thus be seen that the composite filter bag structural behaviour of the embodiment of the present invention is compared to other kinds of mistake on the market
Filter bag, effect and better quality.
In summary: the good bacteriological filter bag and preparation method thereof of the strict control of the present invention filter effect, by stringent
The accounting and preparation technology parameter for controlling each component of the formula of the good bacteriological filter bag of filter effect, using polypropylene fibre
Dimension, polyester fiber, homopolyacrylonitrile fibre, aramid fiber, fibrillated polytetrafluoroethylene, viscose rayon and glass fibre mixed form
Complex structure of filament, both remained the original performance of material, while the high temperature resistant and corrosion resistant of filter bag made of also improving
Corrosion energy, the scope of application is wider, and promotes 20% or more, while the use intensity phase of the filter bag for the filter effect of bacterium
Enhanced than traditional filter bag, also improves the service life of filter bag.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of good bacteriological filter bag of filter effect, it is characterised in that: its raw material is as follows in parts by weight: polypropylene fibre
40-50 parts, 20-30 parts of polyester fiber, 10-14 parts of homopolyacrylonitrile fibre, 15-17 parts of aramid fiber, polytetrafluoroethylene fibre
30-40 parts, 20-30 parts of viscose rayon, 10-20 parts of glass fibre.
2. a kind of good bacteriological filter bag of filter effect according to claim 1, it is characterised in that: the polypropylene is fine
Dimension, polyester fiber, homopolyacrylonitrile fibre, aramid fiber, fibrillated polytetrafluoroethylene, viscose rayon and glass fiber diameter are in 2-10
μm。
3. a kind of good bacteriological filter bag of filter effect according to claim 1, it is characterised in that: the viscose rayon is
Koplon, dry strength are more than 44.1cN/tex.
4. a kind of good bacteriological filter bag of filter effect according to claim 1, it is characterised in that: the glass fibre
Softening point is 500-750 DEG C, density 2.4-2.76g/cm3。
5. a kind of preparation method for the bacteriological filter bag that filter effect according to claim 1 is good, it is characterised in that: including
Following steps:
S1: feeding, by polypropylene fibre, polyester fiber, homopolyacrylonitrile fibre, aramid fiber, polytetrafluoroethylene fibre, viscose glue
Fiber and glass fibre weigh in parts by weight, spare;
S2: fiber opening first tentatively loosens the fibrous raw material of step S1, according to the requirement of technique by big coma
Shredding, while the fiber of various composition in raw material being made to obtain uniform mixing, the then smart shredding of progress, fiber of further loosening,
Composite fibre ingredient;
S3: fiber combing, fiber, into air pressure cotton box, feed carding machine, into after carding machine after shredding and being sufficiently mixed
The combing for acting on realization to fiber by winning between stripping roller and cylinder, finally is transferred out to form web by doffer, this
When web by combing be frivolous single net;
S4: lapping, fibre web enter lapping machine, and lapping carriage is handed over the fiber list net that carding machine exports by tooth form V belt translation
Fork folds, and makes the multilayer fibre web with required breadth and unit grammes per square metre, for next procedure use;
S5: needle thorn compacting, fibre web enters needing machine, there is a large amount of pricker for having acicular hook in needing machine, to web repeatedly into
Row punctures, and web causes fiber upper and lower displacement when pricker punctures repeatedly in fibre web by laying repeatedly, generates extruding, makes
Fiber in fibre web is drawn close and is compressed, and frictional force increases between fiber, and intensity increases, and forms the filter with certain strength density
Bag nonwovens;
S6: filtrate post-processing, the specific steps are as follows:
A: singing and calendering, becomes smooth on one side using what high temperature or the method rolled made filtrate;
B: thermal finalization processing will handle smooth filtrate and pre-process by high temperature, and weaving filtrate is shunk under high temperature environment to be caused
The variation of filter bag size keeps the stabilization of size;
C: filtrate is put into progress waterproof and oilproof processing in waterproofing agent and oil-proofing agent by waterproof and oilproof processing;
D: filtrate is placed in PTFE solution and infiltrates 2-3h, then dried by dipping;
S7: filtrate is cut, and by treated, filtrate is put on cutter is cut out according to the filter bag size of different size;
S8: the sewing of filter bag, the specific steps are as follows:
A: the production of elastic ring determined by filtrate cutting length, elastic ring center away from deviation control within ± 0.5mm,
Elastic ring width between 19-30mm, the riveting of elastic ring joint to just, it is straight, smooth;
B: the production and sewing of spill groove bar, spill groove bar want uniformity using professional stitching sewing machine, baltimore groove groove width,
It is when spill groove bar is bonded with elastic ring that the center of slot is corresponding with the elastic center of ring width, and joint groove is to just;
C: the production and sewing of sack, sack blanking are parallelogram, are first seamed into tubular, are being packed into elastic ring and spill
When bowl assembly, the neat of its edge is paid attention to, guarantee that loading spill groove bar time slot is wide not there is a phenomenon where narrowing, circumferentially stitch with time delay
There is one week suture as close to elastic ring and baltimore groove module edge, without crooked phenomenon, seam three when sack and bag body sew
Contour;
D: the production and sewing at bag bottom, bag bottom are sewed with reinforcing layer, highly in 60-100mm, reinforcing layer are first seamed into tubular, then
Be sewn to the outside of bottom, and joint close stitching and the joint close gap stitching of filter bag body be staggered, the circumferential direction of reinforcing layer using single needle or
Crosspointer sews 1-2 weeks;
S9: the sewing of bag body, bag body sew its stitching using 3-needle 6-thread machine and answer that straight no flotation line, wire jumper, slide down phenomenon, needle
Away between 3.3-4.2mm, outermost side seam line mark is away from edge 2-3mm, and stitching easily twists phenomenon when sewing longer filter bag,
Guarantee the synchronous seam row of two panels up and down during sewing, obtains the good bacteriological filter bag of the filter effect.
6. a kind of preparation method of the good bacteriological filter bag of filter effect according to claim 5, it is characterised in that: described
The heat setting temperature of filtrate is 150-240 DEG C in step S6.
7. a kind of preparation method of the good bacteriological filter bag of filter effect according to claim 5, it is characterised in that: described
In step S8 when the production and sewing of sack needle gage in 3.3-4.2mm.
8. a kind of preparation method of the good bacteriological filter bag of filter effect according to claim 5, it is characterised in that: described
In step S8 the production and sewing at bag bottom using the spacing control of single needle stitch then suture in 4-5mm, and outermost side seam line stitching
There is the distance of 4-5mm away from edge.
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