CN115262044B - Hot-rolled polyester non-woven fabric capable of being wiped - Google Patents
Hot-rolled polyester non-woven fabric capable of being wiped Download PDFInfo
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- CN115262044B CN115262044B CN202210687410.2A CN202210687410A CN115262044B CN 115262044 B CN115262044 B CN 115262044B CN 202210687410 A CN202210687410 A CN 202210687410A CN 115262044 B CN115262044 B CN 115262044B
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- cotton
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- hot
- spreading
- roller
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- 229920000728 polyester Polymers 0.000 title claims abstract description 42
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 39
- 229920000742 Cotton Polymers 0.000 claims abstract description 158
- 238000005507 spraying Methods 0.000 claims abstract description 121
- 238000003892 spreading Methods 0.000 claims abstract description 50
- 239000000835 fiber Substances 0.000 claims abstract description 48
- 239000002994 raw material Substances 0.000 claims abstract description 46
- 238000009960 carding Methods 0.000 claims abstract description 25
- 238000005098 hot rolling Methods 0.000 claims abstract description 21
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 11
- 238000005303 weighing Methods 0.000 claims abstract description 11
- 238000004804 winding Methods 0.000 claims abstract description 11
- 238000000889 atomisation Methods 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 27
- 239000000047 product Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 19
- 230000001276 controlling effect Effects 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 12
- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 claims description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 9
- 230000007062 hydrolysis Effects 0.000 claims description 8
- 238000006460 hydrolysis reaction Methods 0.000 claims description 8
- 238000009966 trimming Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000413 hydrolysate Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- YFCGDEUVHLPRCZ-UHFFFAOYSA-N [dimethyl(trimethylsilyloxy)silyl]oxy-dimethyl-trimethylsilyloxysilane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C YFCGDEUVHLPRCZ-UHFFFAOYSA-N 0.000 claims description 3
- 230000005587 bubbling Effects 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 238000006068 polycondensation reaction Methods 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 238000001308 synthesis method Methods 0.000 claims description 3
- 230000002194 synthesizing effect Effects 0.000 claims description 3
- 238000010189 synthetic method Methods 0.000 claims description 3
- 239000005051 trimethylchlorosilane Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 2
- 238000000576 coating method Methods 0.000 abstract description 8
- 239000011248 coating agent Substances 0.000 abstract description 7
- 230000005661 hydrophobic surface Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G21/00—Combinations of machines, apparatus, or processes, e.g. for continuous processing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/06—Preparatory processes
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
- D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/66—Disintegrating fibre-containing textile articles to obtain fibres for re-use
Abstract
The invention relates to a erasable hot-rolled polyester non-woven fabric, which comprises the following steps: step 1: feeding cotton, namely putting raw material short fibers on a long curtain in proportion, and conveying the long curtain to an inlet of a cotton mixer; step 2: mixing cotton, feeding cotton by a photoelectric control cotton feeder, storing cotton in the photoelectric control cotton feeder, and quantitatively feeding the cotton into an inlet of an opener by thickness or weight; step 3: opening; step 4: feeding cotton; step 5: pre-carding; step 6: lapping; step 7: main carding; step 8: spreading cotton, namely rolling and spreading the three-layer composite material subjected to edge cutting by an edge cutter to form a cotton web by a cotton spreading component of the cotton spreading and spraying device, and uniformly spraying special methyl silicone oil on the surface of the cotton web in an atomization spraying mode by a spraying component; step 9: hot rolling; step 10: winding; step 11: checking and weighing a finished product; the invention has the advantages of uneasy dirt coating, hydrophobic surface, non-oleophilic and cleanable wiping.
Description
Technical Field
The invention belongs to the technical field of polyester non-woven fabrics, and particularly relates to a hot-rolled polyester non-woven fabric capable of being wiped.
Background
The polyester non-woven fabric is spun-bonded non-woven fabric which takes polyester as raw material, is produced by adopting polyester fiber and polyester fiber materials and is manufactured by a needling process, can be manufactured into different thicknesses, handfeel, hardness and the like, and can be used in various aspects of industrial production and people's life, and as the end part of the polyester molecule has active free radicals, the surface of the polyester non-woven fabric is easy to be smeared (the benefit is that the surface can be printed and dyed), the surface of the polyester non-woven fabric is easy to be unclean when in use, the appearance is influenced, and the surface cannot be cleaned; therefore, it would be highly desirable to provide a erasable hot rolled polyester nonwoven fabric that is less prone to fouling, has a hydrophobic surface, is less oleophilic, and is cleanly erasable.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a erasable hot-rolled polyester non-woven fabric which is not easy to be smeared, has hydrophobic surface, is not oleophilic and can be cleaned.
The purpose of the invention is realized in the following way: a erasable hot rolled polyester nonwoven fabric comprising the steps of:
step 1: feeding cotton, namely putting raw material short fibers on a long curtain in proportion, and conveying the long curtain to an inlet of a cotton mixer;
step 2: mixing cotton, feeding cotton by a photoelectric control cotton feeder, storing cotton in the photoelectric control cotton feeder, and quantitatively feeding the cotton into an inlet of an opener by thickness or weight;
step 3: opening, wherein the feeding part controls the feeding quantity by photoelectric control of a cotton feeder, and the opened raw material short fibers are sent into the cotton feeder through a material pipeline by a fan;
step 4: feeding cotton, controlling the raw material short fiber fed from the opener by using a photoelectric switch, controlling the feeding amount of the raw material short fiber fed to an inlet of a carding machine by using a photoelectric instrument on an oblique nail curtain;
step 5: pre-carding, controlling the thickness or weight of the entering amount by using frequency conversion, and finely adjusting the speed of a frequency converter to be sent to a lapping machine;
step 6: lapping, namely feeding the lapped flaky short fibers of the raw materials entering a lapping machine into a main carding machine after transversely and longitudinally cross-folding more than five layers;
step 7: main carding, frequency conversion control is carried out on sheet-shaped short fibers sent by a lapping machine, raw material short fibers are carded through a cylinder, a working roller and a stripping roller, raw material short fibers are transferred to a messy roller through a doffer, the messy roller is used for messy and increasing transverse strength, the stripping roller is used for stripping three layers of composite materials sent to a fiber web conveying curtain from the messy roller on a forming web, the cut edge materials enter the next working procedure through an edge cutter, and the cut edge materials are sent into a cotton feeder through an air pipe;
step 8: spreading cotton, namely rolling and spreading the three-layer composite material subjected to edge cutting by an edge cutter to form a cotton web by a cotton spreading component of the cotton spreading and spraying device, and uniformly spraying special methyl silicone oil on the surface of the cotton web in an atomization spraying mode by a spraying component;
step 9: hot rolling, namely hot-press forming the cotton web which enters an upper hot roller and a lower hot roller of a hot rolling mill from a cotton spreading spraying device, wherein the temperature and the pressure required by the process are regulated by controlling the temperature and the pressure of the hot rollers, hot oil at 235-240 ℃ is pumped into the upper hot roller and the lower hot roller by a heating oil furnace through a hot oil pump, the pressure of the compressed air provided by an air compressor is regulated to be 1.2MPa upwards and 0.8-0.9MPa downwards by a pressure regulating device, and then the compressed air enters a pressure regulating cylinder;
step 10: winding, namely winding a product from a hot rolling mill into a coil after trimming and length counting, wherein the maximum diameter of the coil is 800mm;
step 11: and (3) detecting and weighing the finished product, sampling and detecting physical indexes according to the product quality standard, and weighing each roll of product.
A spread cotton spraying device for hot rolling polyester non-woven fabrics that can clean, including spreading cotton subassembly, spread cotton subassembly left side be provided with shop cotton roller, shop cotton roller the front be provided with the axle sleeve, axle sleeve right side and below be provided with horizontal pole and connecting rod respectively, the horizontal pole right side be provided with the fixed plate, the connecting rod below be provided with the support, the connecting rod pass through elasticity locking subassembly and leg joint, the support inboard be provided with supersonic generator, supersonic generator right side be provided with air feeder, spread cotton subassembly right side be provided with spraying subassembly.
The ultrasonic generator is provided with the connecting wire above, the air feeder in front of be provided with the air feed hose.
The spraying subassembly be provided with the spraying frame with the fixed plate junction, spraying frame right side middle part be provided with the export, spraying frame upper and lower both sides all be provided with the spraying case, spraying case right side all be provided with the spraying pump, spraying frame inboard all be provided with the bottom plate, the bottom plate inboard all be provided with the water row, water row top evenly be provided with a plurality of spraying head from a left side to the right side, the spraying head the preceding gas row that is provided with and air supply hose connection, bottom plate left and right sides all be provided with the mounting panel, bottom plate left and right sides all be provided with the deflector roll.
The spray coating device is characterized in that air inlet connectors, liquid inlet connectors and wiring connectors are respectively arranged on the upper side, the lower side and the lower side of the left side of the spray coating head, an ultrasonic nozzle is arranged below the inner side of the spray coating head, an atomizing nozzle is arranged on the right side of the ultrasonic nozzle, and a plane jet flow guide plate is arranged above the atomizing nozzle.
The front of the spraying pump is provided with a spraying hose for connecting a water row, the front of the water row is provided with connecting pipes connected with liquid inlet connectors of corresponding spraying heads, the front of the bottom plate is provided with a sub-controller for electrically connecting with the connecting wires, the sub-controllers are respectively electrically connected with the spraying heads, and the air row is connected with the corresponding spraying heads through air inlet connectors.
The cotton spreading assembly is symmetrically arranged on the left side of the spraying assembly.
A production process of methyl silicone oil sprayed by a cotton spreading and spraying device for a erasable hot-rolled polyester non-woven fabric, which comprises the following steps of:
step a: adding the metered dimethyl mixed ring body, namely DMC and hexamethyldisiloxane raw material, into a reaction kettle;
step b: adding a concentrated sulfuric acid catalyst into a reaction kettle, wherein the material ratio of a dimethyl mixed ring body to a hexamethyldisiloxane raw material to the concentrated sulfuric acid is 12:8:1, stirring and heating, balancing for 4-6 hours at 60 ℃, washing with water to be neutral, decoloring and filtering to obtain decamethyltetrasiloxane (MD 2M);
step c: adding the metered DMC and MD2M into a reaction kettle, wherein the material ratio of the DMC to the MD2M is 3:1, stirring and heating to 80-90 ℃ to dehydrate l h, then adding a catalyst to dehydrate for 10min; after dehydration is finished, the reaction temperature is raised to 120 ℃ by adopting a program temperature control method, and the reaction lasts for 4 to 6 hours; heating to 150 ℃ after polymerization, preserving heat for 1h, heating to 200-220 ℃, and removing low-boiling substances at a vacuum degree of more than 0.09MPa until volatile components or flash points are qualified;
step d: after the removal of the low-boiling-point substances is finished, the temperature is reduced to about 140 ℃ under the condition of reduced pressure, the bottom valve of the reaction kettle is slightly opened under a certain vacuum degree, compressed air which is fully dried by people is bubbled, the bubbling time is maintained for 1-3 hours, the temperature is naturally reduced to below 50 ℃, and the finished product is obtained by filtering.
The synthetic method of the dimethyl mixed ring body, namely DMC in the step a comprises the following steps: from (CH) having a purity of 99.5% or more 3 ) 2 Preparing dimethyl dichlorosilane hydrolysate by using SiCl through continuous hydrolysis, and synthesizing dimethyl mixed ring body, namely DMC, through hydrolysis of the dimethyl dichlorosilane hydrolysate; the synthesis method of the hexamethyldisiloxane raw material comprises the following steps: the hexamethyldisiloxane is prepared by hydrolysis and polycondensation reaction of trimethylchlorosilane.
The concentrated sulfuric acid catalyst in the step b adopts concentrated sulfuric acid with the concentration of more than 95 percent.
The invention has the beneficial effects that: the invention relates to a hot-rolled polyester non-woven fabric capable of being wiped, which comprises the following process flows: the raw material short fiber is put on a long curtain according to a proportion, the long curtain is conveyed to an inlet of a cotton mixing machine, the cotton feeding amount is conveyed by a photoelectric control cotton feeding machine, the cotton storage amount is conveyed to an inlet of an opener by a quantitative thickness or weight, the feeding amount is controlled by photoelectric control of the cotton feeding machine, the opened raw material short fiber is conveyed to the cotton feeding machine through a material pipeline by a fan, the raw material short fiber conveyed from the opener is controlled by a photoelectric switch, the raw material short fiber conveying amount is controlled by a photoelectric instrument on a oblique nail curtain, the raw material short fiber conveying amount is conveyed to an inlet of a carding machine, the thickness or weight is controlled by a frequency conversion, the speed of the frequency conversion machine is finely adjusted, the raw material which enters the lapping machine is conveyed to a main carding machine through transverse and longitudinal cross folding of the paved flaky short fiber above, the flaky short fiber conveyed by the lapping machine is subjected to carding by a cylinder, a working roll and a stripping roll, transferring short fiber of raw material to a mess roller through doffer, mess roller mess fiber to increase transverse strength, stripping net roller to strip forming net from mess roller to three-layer compound on fiber net conveying curtain, trimming by trimming machine to enter next procedure, cutting off rim charge to cotton feeder through air pipe, spreading cotton-spreading component of cotton-spreading spraying device to roll and flatten three-layer compound after trimming by trimming machine to form cotton net, spraying special methyl silicone oil on the cotton net surface uniformly through spraying component, hot-pressing cotton net entering upper and lower hot rollers of hot rolling mill from cotton-spreading spraying device, hot-pressing forming to required temperature and pressure by hot roller temperature and pressure control, hot oil pump to upper and lower hot rollers at 235-240 ℃ by hot oil furnace, compressed air provided by air compressor, the hot-rolled polyester non-woven fabric is firstly paved into a cotton web through a cotton paving device in the previous hot-rolling procedure, and then uniformly sprayed with a methyl silicone oil coating on the upper surface and the lower surface of the cotton web through a spraying device, and is subjected to hot-rolling forming, so that the hot-rolled polyester non-woven fabric has the characteristics of hydrophobic surface and non-oleophilic surface, is difficult to be smeared compared with the traditional polyester hot-rolled non-woven fabric, can be cleaned by wiping surface dirty coatings with clean towels, has basically no residues after being wiped, and is cleaner and more attractive in use; the invention has the advantages of uneasy dirt coating, hydrophobic surface, non-oleophilic and cleanable wiping.
Drawings
FIG. 1 is a process flow diagram of a erasable hot rolled polyester nonwoven fabric of the present invention.
FIG. 2 is a process flow diagram of a methyl silicone oil of a erasable hot rolled polyester nonwoven fabric of the present invention.
FIG. 3 is a schematic structural view of a cotton spreading and spraying device for a erasable hot-rolled polyester nonwoven fabric.
Fig. 4 is a schematic diagram of a portion of the structure shown in fig. 3.
Fig. 5 is a schematic view of a portion of the structure of fig. 4.
Fig. 6 is a schematic diagram of a portion of the structure of fig. 3.
Fig. 7 is a schematic view of a portion of the structure of fig. 6.
Fig. 8 is a top view of a portion of the structure of fig. 7.
FIG. 9 is a schematic view of the spray head of a hot-rolled polyester nonwoven fabric which can be wiped according to the present invention.
FIG. 10 is a schematic diagram of a spray head for a hot-rolled polyester nonwoven fabric which can be wiped according to the present invention.
In the figure: 1. cotton laying spraying device 2, cotton laying assembly 21, cotton laying roller 22, shaft sleeve 23, cross bar 24, fixing plate 25, connecting rod 26, elastic locking assembly 27, bracket 28, ultrasonic generator 281, connecting wire 29, air supply 291, air supply hose 3, spraying assembly 31, spraying frame 311, outlet 32, spraying tank 33, spraying pump 331, spraying hose 34, bottom plate 341, sub-controller 35, water drain 351, connecting pipe 36, spraying head 361, air inlet joint 362, liquid inlet joint 363, wire joint 364, ultrasonic nozzle 365, atomizing nozzle 366, planar jet deflector 37, air drain 38, guide roller 39, mounting plate.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1 to 10, a erasable hot-rolled polyester nonwoven fabric comprising the steps of:
step 1: feeding cotton, namely putting raw material short fibers on a long curtain in proportion, and conveying the long curtain to an inlet of a cotton mixer;
step 2: mixing cotton, feeding cotton by a photoelectric control cotton feeder, storing cotton in the photoelectric control cotton feeder, and quantitatively feeding the cotton into an inlet of an opener by thickness or weight;
step 3: opening, wherein the feeding part controls the feeding quantity by photoelectric control of a cotton feeder, and the opened raw material short fibers are sent into the cotton feeder through a material pipeline by a fan;
step 4: feeding cotton, controlling the raw material short fiber fed from the opener by using a photoelectric switch, controlling the feeding amount of the raw material short fiber fed to an inlet of a carding machine by using a photoelectric instrument on an oblique nail curtain;
step 5: pre-carding, controlling the thickness or weight of the entering amount by using frequency conversion, and finely adjusting the speed of a frequency converter to be sent to a lapping machine;
step 6: lapping, namely feeding the lapped flaky short fibers of the raw materials entering a lapping machine into a main carding machine after transversely and longitudinally cross-folding more than five layers;
step 7: main carding, frequency conversion control is carried out on sheet-shaped short fibers sent by a lapping machine, raw material short fibers are carded through a cylinder, a working roller and a stripping roller, raw material short fibers are transferred to a messy roller through a doffer, the messy roller is used for messy and increasing transverse strength, the stripping roller is used for stripping three layers of composite materials sent to a fiber web conveying curtain from the messy roller on a forming web, the cut edge materials enter the next working procedure through an edge cutter, and the cut edge materials are sent into a cotton feeder through an air pipe;
step 8: spreading cotton, namely rolling and spreading the three-layer composite material subjected to edge cutting by an edge cutter to form a cotton web by a cotton spreading component of the cotton spreading and spraying device, and uniformly spraying special methyl silicone oil on the surface of the cotton web in an atomization spraying mode by a spraying component;
step 9: hot rolling, namely hot-press forming the cotton web which enters an upper hot roller and a lower hot roller of a hot rolling mill from a cotton spreading spraying device, wherein the temperature and the pressure required by the process are regulated by controlling the temperature and the pressure of the hot rollers, hot oil at 235-240 ℃ is pumped into the upper hot roller and the lower hot roller by a heating oil furnace through a hot oil pump, the pressure of the compressed air provided by an air compressor is regulated to be 1.2MPa upwards and 0.8-0.9MPa downwards by a pressure regulating device, and then the compressed air enters a pressure regulating cylinder;
step 10: winding, namely winding a product from a hot rolling mill into a coil after trimming and length counting, wherein the maximum diameter of the coil is 800mm;
step 11: and (3) detecting and weighing the finished product, sampling and detecting physical indexes according to the product quality standard, and weighing each roll of product.
A spread cotton spraying device 1 for hot rolling polyester non-woven fabrics that can wipe, including spreading cotton subassembly 2, spread cotton subassembly 2 left side be provided with spread cotton roller 21, spread cotton roller 21 the place ahead be provided with axle sleeve 22, axle sleeve 22 right side and below be provided with horizontal pole 23 and connecting rod 25 respectively, horizontal pole 23 right side be provided with fixed plate 24, connecting rod 25 below be provided with support 27, connecting rod 25 be connected with support 27 through elasticity locking subassembly 26, support 27 inboard be provided with supersonic generator 28, supersonic generator 28 right side be provided with air feeder 29, spread cotton subassembly 2 right side be provided with spraying subassembly 3.
For better effect, a connecting wire 281 is arranged above the ultrasonic generator 28, and an air supply hose 291 is arranged in front of the air supply device 29.
The spraying subassembly 3 be provided with spraying frame 31 with fixed plate 24 junction, spraying frame 31 right side middle part be provided with export 311, spraying frame 31 upper and lower both sides all be provided with spraying case 32, spraying case 32 right side all be provided with spraying pump 33, spraying frame 31 inboard all be provided with bottom plate 34, bottom plate 34 inboard all be provided with water row 35, water row 35 top evenly be provided with a plurality of spraying head 36 from left to right, the front of spraying head 36 be provided with the gas row 37 of being connected with air supply hose 291, bottom plate 34 both ends all be provided with mounting panel 39 about, bottom plate 34 both sides all be provided with deflector roll 38.
The upper side, the lower side and the lower side of the left side of the spray head 36 are respectively provided with an air inlet connector 361, a liquid inlet connector 362 and a wiring connector 363, an ultrasonic nozzle 364 is arranged below the inner side of the spray head 36, an atomizing nozzle 365 is arranged on the right side of the ultrasonic nozzle 364, and a plane jet flow guide plate 366 is arranged above the atomizing nozzle 365.
For better effect, the front of the spraying pump 33 is provided with a spraying hose 331 for connecting the water row 35, the front of the water row 35 is provided with connecting pipes 351 corresponding to the liquid inlet joints 362 of the corresponding spraying heads 36, the front of the bottom plate 34 is provided with sub controllers 341 for electrically connecting with the connecting wires 281, the sub controllers 341 are electrically connected with the spraying heads 36 respectively, and the air row 37 is connected with the corresponding spraying heads 36 through air inlet joints 361.
For better effect, the cotton spreading component 2 is symmetrically arranged on the left side of the spraying component 3.
The invention has the beneficial effects that: the invention relates to a hot-rolled polyester non-woven fabric capable of being wiped, which comprises the following process flows: the method comprises the following specific processes of cotton feeding, cotton mixing, opening, cotton feeding, pre-carding, lapping, main carding, cotton paving and spraying, hot rolling, winding, finished product inspection and weighing, and cotton paving and spraying: the cotton spreading component of the cotton spreading spraying device rolls and spreads the three-layer composite material subjected to edge cutting by an edge cutter to form a cotton web, and special methyl silicone oil is uniformly sprayed on the surface of the cotton web through the spraying component in an atomization spraying mode. The invention has the advantages of uneasy dirt coating, hydrophobic surface, non-oleophilic and cleanable wiping.
Example 2
As shown in fig. 1 to 10, a erasable hot-rolled polyester nonwoven fabric comprising the steps of:
step 1: feeding cotton, namely putting raw material short fibers on a long curtain in proportion, and conveying the long curtain to an inlet of a cotton mixer;
step 2: mixing cotton, feeding cotton by a photoelectric control cotton feeder, storing cotton in the photoelectric control cotton feeder, and quantitatively feeding the cotton into an inlet of an opener by thickness or weight;
step 3: opening, wherein the feeding part controls the feeding quantity by photoelectric control of a cotton feeder, and the opened raw material short fibers are sent into the cotton feeder through a material pipeline by a fan;
step 4: feeding cotton, controlling the raw material short fiber fed from the opener by using a photoelectric switch, controlling the feeding amount of the raw material short fiber fed to an inlet of a carding machine by using a photoelectric instrument on an oblique nail curtain;
step 5: pre-carding, controlling the thickness or weight of the entering amount by using frequency conversion, and finely adjusting the speed of a frequency converter to be sent to a lapping machine;
step 6: lapping, namely feeding the lapped flaky short fibers of the raw materials entering a lapping machine into a main carding machine after transversely and longitudinally cross-folding more than five layers;
step 7: main carding, frequency conversion control is carried out on sheet-shaped short fibers sent by a lapping machine, raw material short fibers are carded through a cylinder, a working roller and a stripping roller, raw material short fibers are transferred to a messy roller through a doffer, the messy roller is used for messy and increasing transverse strength, the stripping roller is used for stripping three layers of composite materials sent to a fiber web conveying curtain from the messy roller on a forming web, the cut edge materials enter the next working procedure through an edge cutter, and the cut edge materials are sent into a cotton feeder through an air pipe;
step 8: spreading cotton, namely rolling and spreading the three-layer composite material subjected to edge cutting by an edge cutter to form a cotton web by a cotton spreading component of the cotton spreading and spraying device, and uniformly spraying special methyl silicone oil on the surface of the cotton web in an atomization spraying mode by a spraying component;
step 9: hot rolling, namely hot-press forming the cotton web which enters an upper hot roller and a lower hot roller of a hot rolling mill from a cotton spreading spraying device, wherein the temperature and the pressure required by the process are regulated by controlling the temperature and the pressure of the hot rollers, hot oil at 235-240 ℃ is pumped into the upper hot roller and the lower hot roller by a heating oil furnace through a hot oil pump, the pressure of the compressed air provided by an air compressor is regulated to be 1.2MPa upwards and 0.8-0.9MPa downwards by a pressure regulating device, and then the compressed air enters a pressure regulating cylinder;
step 10: winding, namely winding a product from a hot rolling mill into a coil after trimming and length counting, wherein the maximum diameter of the coil is 800mm;
step 11: and (3) detecting and weighing the finished product, sampling and detecting physical indexes according to the product quality standard, and weighing each roll of product.
A production process of methyl silicone oil sprayed by a cotton spreading and spraying device for a erasable hot-rolled polyester non-woven fabric, which comprises the following steps of:
step a: adding the metered dimethyl mixed ring body, namely DMC and hexamethyldisiloxane raw material, into a reaction kettle;
step b: adding a concentrated sulfuric acid catalyst into a reaction kettle, wherein the material ratio of a dimethyl mixed ring body to a hexamethyldisiloxane raw material to the concentrated sulfuric acid is 12:8:1, stirring and heating, balancing for 4-6 hours at 60 ℃, washing with water to be neutral, decoloring and filtering to obtain decamethyltetrasiloxane (MD 2M);
step c: adding the metered DMC and MD2M into a reaction kettle, wherein the material ratio of the DMC to the MD2M is 3:1, stirring and heating to 80-90 ℃ to dehydrate l h, then adding a catalyst to dehydrate for 10min; after dehydration is finished, the reaction temperature is raised to 120 ℃ by adopting a program temperature control method, and the reaction lasts for 4 to 6 hours; heating to 150 ℃ after polymerization, preserving heat for 1h, heating to 200-220 ℃, and removing low-boiling substances at a vacuum degree of more than 0.09MPa until volatile components or flash points are qualified;
step d: after the removal of the low-boiling-point substances is finished, the temperature is reduced to about 140 ℃ under the condition of reduced pressure, the bottom valve of the reaction kettle is slightly opened under a certain vacuum degree, compressed air which is fully dried by people is bubbled, the bubbling time is maintained for 1-3 hours, the temperature is naturally reduced to below 50 ℃, and the finished product is obtained by filtering.
The synthetic method of the dimethyl mixed ring body, namely DMC in the step a comprises the following steps: from (CH) having a purity of 99.5% or more 3 ) 2 Preparing dimethyl dichlorosilane hydrolysate by using SiCl through continuous hydrolysis, and synthesizing dimethyl mixed ring body, namely DMC, through hydrolysis of the dimethyl dichlorosilane hydrolysate; the synthesis method of the hexamethyldisiloxane raw material comprises the following steps: the hexamethyldisiloxane is prepared by hydrolysis and polycondensation reaction of trimethylchlorosilane.
The concentrated sulfuric acid catalyst in the step b adopts concentrated sulfuric acid with the concentration of more than 95 percent.
The invention relates to a hot-rolled polyester non-woven fabric capable of being wiped, which comprises the following process flows: the method comprises the following specific processes of cotton feeding, cotton mixing, opening, cotton feeding, pre-carding, lapping, main carding, cotton paving and spraying, hot rolling, winding, finished product inspection and weighing, and cotton paving and spraying: the cotton spreading component 2 of the cotton spreading spraying device 1 rolls and spreads the three-layer composite material subjected to edge cutting by an edge cutter to form a cotton web, special methyl silicone oil is uniformly sprayed on the surface of the cotton web through the spraying component 3 in an atomization spraying mode, and the hot-rolled polyester non-woven fabric is firstly spread into the cotton web through a cotton spreading roller 21 of the cotton spreading component 2 in a previous hot rolling process, namely a cotton spreading spraying process, then a methyl silicone oil coating is uniformly sprayed on the upper surface and the lower surface of the cotton web through an atomization nozzle 365 of the spraying component 3, the spraying is uniform, the sprayed film coating is thinner and more controllable, the nozzle is not easy to block, the ultrasonic nozzle 364 does not generate splashing in the spraying process, the coating utilization rate is higher, and the hot-rolled forming is realized. The invention has the advantages of uneasy dirt coating, hydrophobic surface, non-oleophilic and cleanable wiping.
Claims (9)
1. A production process of methyl silicone oil used for spraying hot-rolled polyester non-woven fabric capable of being wiped is characterized by comprising the following steps: it comprises the following steps:
step a: adding the metered dimethyl mixed ring body, namely DMC and hexamethyldisiloxane raw material, into a reaction kettle;
step b: adding a concentrated sulfuric acid catalyst into a reaction kettle, wherein the material ratio of a dimethyl mixed ring body to a hexamethyldisiloxane raw material to the concentrated sulfuric acid is 12:8:1, stirring and heating, balancing for 4-6 hours at 60 ℃, washing with water to be neutral, decoloring and filtering to obtain decamethyltetrasiloxane (MD 2M);
step c: adding the metered DMC and MD2M into a reaction kettle, wherein the material ratio of the DMC to the MD2M is 3:1, stirring and heating to 80-90 ℃ to dehydrate l h, then adding a catalyst to dehydrate for 10min; after dehydration is finished, the reaction temperature is raised to 120 ℃ by adopting a program temperature control method, and the reaction lasts for 4 to 6 hours; heating to 150 ℃ after polymerization, preserving heat for 1h, heating to 200-220 ℃, and removing low-boiling substances at a vacuum degree of more than 0.09MPa until volatile components or flash points are qualified;
step d: after removing low-boiling substances, cooling to about 140 ℃ under a reduced pressure condition, slightly opening a reaction kettle bottom valve under a certain vacuum degree, bubbling compressed air fully dried by a person, maintaining for 1-3 h, naturally cooling to below 50 ℃, and filtering to obtain a finished product;
the synthetic method of the dimethyl mixed ring body, namely DMC in the step a comprises the following steps: from (CH) having a purity of 99.5% or more 3 ) 2 SiCl 2 Preparing dimethyl dichlorosilane hydrolysate by continuous hydrolysis, and synthesizing dimethyl mixed ring body, namely DMC; the synthesis method of the hexamethyldisiloxane raw material comprises the following steps: the hexamethyldisiloxane is prepared by hydrolysis and polycondensation reaction of trimethylchlorosilane.
2. The process for producing a methyl silicone oil for spray coating of a erasable hot-rolled polyester nonwoven fabric according to claim 1, wherein: the concentrated sulfuric acid catalyst in the step b adopts concentrated sulfuric acid with the concentration of more than 95 percent.
3. A production process of a erasable hot-rolled polyester non-woven fabric is characterized by comprising the following steps of: it comprises the following steps:
step 1: feeding cotton, namely putting raw material short fibers on a long curtain in proportion, and conveying the long curtain to an inlet of a cotton mixer;
step 2: mixing cotton, feeding cotton by a photoelectric control cotton feeder, storing cotton in the photoelectric control cotton feeder, and quantitatively feeding the cotton into an inlet of an opener by thickness or weight;
step 3: opening, wherein the feeding part controls the feeding quantity by photoelectric control of a cotton feeder, and the opened raw material short fibers are sent into the cotton feeder through a material pipeline by a fan;
step 4: feeding cotton, controlling the raw material short fiber fed from the opener by using a photoelectric switch, controlling the feeding amount of the raw material short fiber fed to an inlet of a carding machine by using a photoelectric instrument on an oblique nail curtain;
step 5: pre-carding, controlling the thickness or weight of the entering amount by using frequency conversion, and finely adjusting the speed of a frequency converter to be sent to a lapping machine;
step 6: lapping, namely feeding the lapped flaky short fibers of the raw materials entering a lapping machine into a main carding machine after transversely and longitudinally cross-folding more than five layers;
step 7: main carding, frequency conversion control is carried out on sheet-shaped short fibers sent by a lapping machine, raw material short fibers are carded through a cylinder, a working roller and a stripping roller, raw material short fibers are transferred to a messy roller through a doffer, the messy roller is used for messy and increasing transverse strength, the stripping roller is used for stripping three layers of composite materials sent to a fiber web conveying curtain from the messy roller on a forming web, the cut edge materials enter the next working procedure through an edge cutter, and the cut edge materials are sent into a cotton feeder through an air pipe;
step 8: spreading cotton, namely rolling and spreading the three-layer composite material subjected to edge cutting by an edge cutter to form a cotton web by a cotton spreading component of the cotton spreading and spraying device, and uniformly spraying methyl silicone oil prepared by the production process of any one of claims 1-2 on the surface of the cotton web in an atomization spraying mode by the spraying component;
step 9: hot rolling, namely hot-press forming the cotton web which enters an upper hot roller and a lower hot roller of a hot rolling mill from a cotton spreading spraying device, wherein the temperature and the pressure required by the process are regulated by controlling the temperature and the pressure of the hot rollers, hot oil at 235-240 ℃ is pumped into the upper hot roller and the lower hot roller by a heating oil furnace through a hot oil pump, the pressure of the compressed air provided by an air compressor is regulated to be 1.2MPa upwards and 0.8-0.9MPa downwards by a pressure regulating device, and then the compressed air enters a pressure regulating cylinder;
step 10: winding, namely winding a product from a hot rolling mill into a coil after trimming and length counting, wherein the maximum diameter of the coil is 800mm;
step 11: and (3) detecting and weighing the finished product, sampling and detecting physical indexes according to the product quality standard, and weighing each roll of product.
4. A cotton spreading and spraying device for a erasable hot rolled polyester nonwoven fabric, said spraying device applying the process of claim 3, characterized in that: including spreading cotton subassembly, spread cotton subassembly left side be provided with shop cotton roller, spread cotton roller the front be provided with the axle sleeve, axle sleeve right side and below be provided with horizontal pole and connecting rod respectively, the horizontal pole right side be provided with the fixed plate, the connecting rod below be provided with the support, the connecting rod pass through elasticity locking subassembly and leg joint, the support inboard be provided with supersonic generator, supersonic generator right side be provided with air feeder, spread cotton subassembly right side be provided with the spraying subassembly.
5. A cotton spreading and spraying device for a erasable hot rolled polyester nonwoven fabric as claimed in claim 4, wherein: the ultrasonic generator is provided with the connecting wire above, the air feeder in front of be provided with the air feed hose.
6. A cotton spreading and spraying device for a erasable hot rolled polyester nonwoven fabric as claimed in claim 4, wherein: the spraying subassembly be provided with the spraying frame with the fixed plate junction, spraying frame right side middle part be provided with the export, spraying frame upper and lower both sides all be provided with the spraying case, spraying case right side all be provided with the spraying pump, spraying frame inboard all be provided with the bottom plate, the bottom plate inboard all be provided with the water row, water row top evenly be provided with a plurality of spraying head from a left side to the right side, the spraying head the preceding gas row that is provided with and air supply hose connection, bottom plate left and right sides all be provided with the mounting panel, bottom plate left and right sides all be provided with the deflector roll.
7. A cotton spreading and spraying device for a erasable hot rolled polyester nonwoven fabric as claimed in claim 6, wherein: the spray coating device is characterized in that air inlet connectors, liquid inlet connectors and wiring connectors are respectively arranged on the upper side, the lower side and the lower side of the left side of the spray coating head, an ultrasonic nozzle is arranged below the inner side of the spray coating head, an atomizing nozzle is arranged on the right side of the ultrasonic nozzle, and a plane jet flow guide plate is arranged above the atomizing nozzle.
8. A cotton spreading and spraying device for a erasable hot rolled polyester nonwoven fabric as claimed in claim 6, wherein: the front of the spraying pump is provided with a spraying hose for connecting a water row, the front of the water row is provided with connecting pipes connected with liquid inlet connectors of corresponding spraying heads, the front of the bottom plate is provided with a sub-controller for electrically connecting with the connecting wires, the sub-controllers are respectively electrically connected with the spraying heads, and the air row is connected with the corresponding spraying heads through air inlet connectors.
9. A cotton spreading and spraying device for a hot rolled polyester nonwoven fabric which can be wiped according to any one of claims 4 to 8, characterized in that: the cotton spreading assembly is symmetrically arranged on the left side of the spraying assembly.
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| CN202210687410.2A CN115262044B (en) | 2022-06-17 | 2022-06-17 | Hot-rolled polyester non-woven fabric capable of being wiped |
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| JP2003246838A (en) * | 2002-02-27 | 2003-09-05 | Arakawa Chem Ind Co Ltd | Epoxy resin composition, resin composition and resin for electronic material, coating agent and process for preparing cured film of coating agent |
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| CN111826802A (en) * | 2020-07-01 | 2020-10-27 | 湖北环福塑料制品有限公司 | Hot rolling process for processing non-woven fabric |
| CN111961205A (en) * | 2020-08-13 | 2020-11-20 | 江西蓝星星火有机硅有限公司 | Process for continuously producing various low-viscosity methyl silicone oils by comprehensively utilizing methyl silicone oil polymerization material |
| CN114438792A (en) * | 2022-02-18 | 2022-05-06 | 河南省亚安绝缘材料厂有限公司 | Organosilicon impregnated flame-retardant non-woven fabric |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003246838A (en) * | 2002-02-27 | 2003-09-05 | Arakawa Chem Ind Co Ltd | Epoxy resin composition, resin composition and resin for electronic material, coating agent and process for preparing cured film of coating agent |
| CN109322060A (en) * | 2018-12-03 | 2019-02-12 | 徐州荣创企业咨询管理有限公司 | A kind of manufacturing method of non-woven fabrics |
| CN111826802A (en) * | 2020-07-01 | 2020-10-27 | 湖北环福塑料制品有限公司 | Hot rolling process for processing non-woven fabric |
| CN111961205A (en) * | 2020-08-13 | 2020-11-20 | 江西蓝星星火有机硅有限公司 | Process for continuously producing various low-viscosity methyl silicone oils by comprehensively utilizing methyl silicone oil polymerization material |
| CN114438792A (en) * | 2022-02-18 | 2022-05-06 | 河南省亚安绝缘材料厂有限公司 | Organosilicon impregnated flame-retardant non-woven fabric |
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