CN112625615A - Manufacturing method of filter bag needle hole sealing hot-melt adhesive tape - Google Patents
Manufacturing method of filter bag needle hole sealing hot-melt adhesive tape Download PDFInfo
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- CN112625615A CN112625615A CN202011371164.7A CN202011371164A CN112625615A CN 112625615 A CN112625615 A CN 112625615A CN 202011371164 A CN202011371164 A CN 202011371164A CN 112625615 A CN112625615 A CN 112625615A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/245—Vinyl resins, e.g. polyvinyl chloride [PVC]
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/35—Heat-activated
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a manufacturing method of a filter bag needle eye sealing hot melt adhesive tape, relates to the technical field of filter bag needle eye sealing glue, and is provided based on the problem that the existing filter bag suture needle eye sealing mode is easy to fall off. According to the invention, the polytetrafluoroethylene base layer, the polyurethane intermediate layer and the polyethylene hot melt adhesive layer are sequentially compounded together, the prepared sealing adhesive tape can quickly and effectively seal needle holes, the peel strength of the prepared three-layer sealing adhesive tape reaches 0.32kN/m, the peel strength is not increased or not increased obviously after the thickness of the sealing adhesive tape is increased to 50 mu m, the wear resistance of the sealing adhesive tape is good compared with that of the existing common normal-temperature hot melt adhesive tape, and the wear resistance of the prepared three-layer sealing adhesive tape reaches 4100 times.
Description
Technical Field
The invention relates to the technical field of filter bag needle eye sealant, in particular to a manufacturing method of a filter bag needle eye sealing hot melt adhesive tape.
Background
With the further implementation of the national environmental protection strategy, the blue sky guard war requires enterprises to further control the emission of dust particles in the flue gas. The ultra-low emission requires not only design and optimization of the structure of the bag type dust collector, but also sealing treatment of needle holes generated in the sewing process of the filter bag.
At present, three sealing modes of filter bag suture needle holes are mainly adopted, firstly, seamless heat bonding is adopted, two ends of a filter material are directly subjected to hot melting lap joint without sewing by a suture, but the hot melting lap joint of the method is easy to fall off for common filter materials; secondly, the double-layer filter bags are sleeved in a staggered mode, and the sewing lines are staggered, but the method is high in cost and does not fundamentally solve the problem that dust leaks from needle holes; thirdly, gluing the needle eye, and coating glue at the position of the suture needle eye to block the needle eye. For example, patent CN106916560A discloses a GSX glue for sealing filter material and a method for automatically coating the sealing filter material, the GSX glue for sealing filter material comprises the following raw material components: 10-40 parts of polyester polyol, 10-50 parts of MDI, 0.05-0.3 part of catalyst and 1-5 parts of filler, wherein the parts are parts by mass, and the customized gluing equipment and sewing threads are used for realizing online synchronization to seal sewing needle holes of filter bags in an online manner. But the mode of pinhole rubber coating has the defect: the glue has long curing time and can crack and fall off in a long-term high-temperature environment.
Disclosure of Invention
The invention aims to solve the technical problem that the existing filter bag suture needle eye sealing mode is easy to fall off.
The invention solves the technical problems through the following technical means:
a manufacturing method of a filter bag needle eye sealing hot melt adhesive tape comprises the following steps:
(1) uniformly mixing 65-75% of polytetrafluoroethylene micro-powder particles, 15-20% of liquid circulation extrusion aid, 5-7% of tackifying particles and 5-8% of carbon black according to the mass fraction ratio, putting the mixture into a mixing barrel, putting the mixing barrel on a mixer for mixing, rotating forwards for 45-60min, and then rotating backwards for 45-60min to fully mix various raw materials to form a mixed material, putting the mixed material into a drying room for standing to form a mixed cooked material;
(2) putting the mixed cooked material formed in the step (1) into a pre-pressing forming machine to extrude the mixed cooked material into a cylindrical blank; forming the blank into a continuous thin cylinder through a pushing and pressing machine; rolling the substrate film into a polytetrafluoroethylene-based film by a calendar, and controlling the thickness of the substrate film to be 10-20 mu m;
(3) uniformly mixing 75-87% of polyurethane adhesive, 5-10% of carbon black, 5-10% of clay, 1-2% of coupling agent and 2-3% of drying agent according to the mass fraction ratio to obtain a polyurethane mixture, coating the polyurethane mixture on the polytetrafluoroethylene-based layer film obtained in the step (2) through a coating machine to form a polyurethane intermediate layer, and controlling the overall thickness to be 20-40 mu m;
(4) uniformly mixing 70-84% of polyethylene, 10-20% of softener, 1-2% of coupling agent and 5-8% of white carbon black according to the mass fraction ratio to obtain a polyethylene hot melt adhesive layer, coating the polyethylene hot melt adhesive layer on the polyurethane intermediate layer obtained in the step (3), controlling the overall thickness to be 40-60 mu m, and cutting the polyurethane hot melt adhesive layer into narrow strips with the width of 20-30mm to obtain the sealing adhesive tape.
The polytetrafluoroethylene has high temperature resistance and good acid and alkali resistance, and a formed base layer is stable and is not easy to damage; the liquid circulation extrusion assistant has the main functions of increasing the flowability of the powder, enabling the rolling to be carried out smoothly and reducing the bad phenomenon; the tackifying particles mainly have the functions of crosslinking the polytetrafluoroethylene macromolecules and improving the bonding property of the base layer; the carbon black is mainly used as a filler, so that the cohesive strength and the electric conductivity of the sealant are improved, and dust is not easy to accumulate at the needle eye adhesive tape.
The polyurethane adhesive is a main material of the middle layer and is used for connecting the base layer and the hot melt adhesive layer, so that the multi-layer structure of the adhesive tape is more stable, and the oxidation resistance of the adhesive tape is improved; the carbon black and the clay are mainly used as fillers to increase the cohesive strength of the sealant, so that dust is not easy to accumulate at the needle eye adhesive tape, and the carbon black has certain conductivity, so that static charge accumulation caused by dust washing of the adhesive tape can be reduced; the drying agent mainly has the function of absorbing moisture in the smoke to meet the dew point requirement.
The polyethylene is mainly used as a hot melt agent and performs a hot melting function together with the polyurethane layer.
Preferably, the liquid circulation extrusion aid in the step (1) comprises kerosene or petroleum ether.
Preferably, the tackifying particles in step (1) comprise atactic polypropylene or low molecular polyisobutylene.
Preferably, the rotating speed of the forward rotation and the rotating speed of the reverse rotation in the step (1) are both 6-10 r/min.
Preferably, the mixed material in the step (1) is kept still in a drying room for 7-9 hours, and the temperature of the drying room is 50-70 ℃.
Preferably, the extrusion temperature of the pre-pressing forming machine in the step (2) is 30-50 ℃.
Preferably, the pushing temperature of the pushing machine in the step (2) is 40-60 ℃.
Preferably, the calendering temperature of the calender in the step (2) is 60-80 ℃.
Preferably, the coupling agents in the step (3) and the step (4) are both silane coupling agents; the coupling agent is used for improving the adhesiveness among the raw materials and the sealing performance of the adhesive tape.
Preferably, the softener in the step (4) is silane-based oil; the softener mainly plays a role in softening and protecting the polyethylene.
The invention has the following beneficial effects:
1. the invention provides a manufacturing method of a filter bag pinhole sealing hot melt adhesive tape, the prepared sealing adhesive tape can quickly and effectively seal a pinhole, the peel strength of the prepared three-layer sealing adhesive tape reaches 0.32kN/m, and the peel strength is not increased or is not obviously increased after the thickness of the sealing adhesive tape is increased to 50 mu m.
2. Compared with the existing common normal-temperature hot melt adhesive tape, the three-layer sealing adhesive tape prepared by the method has good wear resistance, and the wear resistance times of the three-layer sealing adhesive tape prepared by the method are up to 4100 times.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Test materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
The specific techniques or conditions not specified in the examples can be performed according to the techniques or conditions described in the literature in the field or according to the product specification.
Example 1
A manufacturing method of a filter bag needle eye sealing hot melt adhesive tape comprises the following steps:
(1) uniformly mixing 65% of polytetrafluoroethylene micro-powder particles, 20% of liquid circulation extrusion aid, 7% of tackifying particles and 8% of carbon black according to the mass fraction ratio, putting the mixture into a mixing barrel, putting the mixing barrel on a mixer for mixing, rotating forwards for 45min, and then rotating backwards for 45min to fully mix various raw materials to form a mixed material, putting the mixed material into a drying room for standing to form a mixed cooked material;
(2) putting the mixed cooked material formed in the step (1) into a pre-pressing forming machine to be extruded into a cylindrical blank at the temperature of 30 ℃; forming the blank into a continuous thin cylindrical object by a pushing press at the temperature of 40 ℃; then rolling the mixture into a polytetrafluoroethylene-based film by a calender at the temperature of 60 ℃, and controlling the thickness of the base film to be 15 mu m;
(3) uniformly mixing 80% of polyurethane adhesive, 7% of carbon black, 8% of clay, 2% of coupling agent and 3% of drying agent according to the mass fraction ratio to obtain a polyurethane mixture, coating the polyurethane mixture on the polytetrafluoroethylene-based layer film obtained in the step (2) through a coating machine to form a polyurethane intermediate layer, and controlling the overall thickness to be 20 mu m;
(4) and (3) uniformly mixing 75% of polyethylene, 15% of softener, 2% of coupling agent and 8% of white carbon black according to the mass fraction ratio, coating the mixture on the polyurethane intermediate layer obtained in the step (3), controlling the overall thickness to be 40 mu m, and cutting the mixture into narrow strips with the width of 20mm to obtain the sealing rubber strips.
The three-layer sealant strip prepared in the embodiment is stuck to a test plate in a hot rolling mode, the hot rolling temperature is 190 ℃, the three-layer sealant strip is placed for 24 hours at normal temperature after the hot rolling is finished, before the peel strength test of the sealant strip, in order to simulate the high-temperature working condition environment of a dust remover, the sample is placed in a 190 ℃ oven for 30 minutes, and the peel strength is taken out to calculate, wherein the results are shown in table 1.
Example 2
A manufacturing method of a filter bag needle eye sealing hot melt adhesive tape comprises the following steps:
(1) uniformly mixing 70% of polytetrafluoroethylene micro-powder particles, 20% of liquid circulation extrusion aid, 5% of tackifying particles and 5% of carbon black according to the mass fraction ratio, putting the mixture into a mixing barrel, putting the mixing barrel on a mixer for mixing, rotating forwards for 50min, and then rotating backwards for 50min to fully mix various raw materials to form a mixed material, putting the mixed material into a drying room and standing to form a mixed cooked material;
(2) putting the mixed cooked material formed in the step (1) into a pre-pressing forming machine to extrude the mixed cooked material into a cylindrical blank; forming the blank into a continuous thin cylinder through a pushing and pressing machine; then rolling the substrate into a polytetrafluoroethylene-based film by a calender, and controlling the thickness of the substrate film to be 20 mu m;
(3) uniformly mixing 85% of polyurethane adhesive, 5% of carbon black, 5% of clay, 2% of coupling agent and 3% of drying agent according to the mass fraction ratio to obtain a polyurethane mixture, coating the polyurethane mixture on the polytetrafluoroethylene-based layer film obtained in the step (2) through a coating machine to form a polyurethane intermediate layer, and controlling the overall thickness to be 25 mu m;
(4) and (3) uniformly mixing 80% of polyethylene, 10% of softener, 2% of coupling agent and 8% of white carbon black according to the mass fraction ratio, coating the mixture on the polyurethane intermediate layer obtained in the step (3), controlling the overall thickness to be 50 mu m, and cutting the mixture into narrow strips with the width of 20mm to obtain the sealing rubber strips.
The three-layer sealant strip prepared in the embodiment is stuck to a test plate in a hot rolling mode, the hot rolling temperature is 190 ℃, the three-layer sealant strip is placed for 24 hours at normal temperature after the hot rolling is finished, before the peel strength test of the sealant strip, in order to simulate the high-temperature working condition environment of a dust remover, the sample is placed in a 190 ℃ oven for 30 minutes, and the peel strength is taken out to calculate, wherein the results are shown in table 1.
Example 3
A manufacturing method of a filter bag needle eye sealing hot melt adhesive tape comprises the following steps:
(1) uniformly mixing 73% of polytetrafluoroethylene micro-powder particles, 18% of liquid circulation extrusion aid, 4% of tackifying particles and 5% of carbon black according to the mass fraction ratio, putting the mixture into a mixing barrel, putting the mixing barrel on a mixer for mixing, rotating forwards for 60min, and then rotating backwards for 60min to fully mix various raw materials to form a mixed material, putting the mixed material into a drying room for standing to form a mixed cooked material;
(2) putting the mixed cooked material formed in the step (1) into a pre-pressing forming machine to extrude the mixed cooked material into a cylindrical blank; forming the blank into a continuous thin cylinder through a pushing and pressing machine; then rolling the substrate into a polytetrafluoroethylene-based film by a calender, and controlling the thickness of the substrate film to be 20 mu m;
(3) uniformly mixing 85% of polyurethane adhesive, 6% of carbon black, 5% of clay, 2% of coupling agent and 2% of drying agent according to the mass fraction ratio to obtain a polyurethane mixture, coating the polyurethane mixture on the polytetrafluoroethylene-based layer film obtained in the step (2) through a coating machine to form a polyurethane intermediate layer, and controlling the thickness of the whole to be 35 mu m;
(4) and (3) uniformly mixing 80% of polyethylene, 10% of softener, 2% of coupling agent and 8% of white carbon black according to the mass fraction ratio, coating the mixture on the polyurethane intermediate layer obtained in the step (3), controlling the overall thickness to be 60 mu m, and cutting the mixture into narrow strips with the width of 20mm to obtain the sealing rubber strips.
The three-layer sealant strip prepared in the embodiment is stuck to a test plate in a hot rolling mode, the hot rolling temperature is 190 ℃, the three-layer sealant strip is placed for 24 hours at normal temperature after the hot rolling is finished, before the peel strength test of the sealant strip, in order to simulate the high-temperature working condition environment of a dust remover, the sample is placed in a 190 ℃ oven for 30 minutes, and the peel strength is taken out to calculate, wherein the results are shown in table 1.
The wear resistance test of the three-layer joint strip prepared in the embodiment is carried out according to the national standard GB/T21196.2-2007, and the test result shows that the wear resistance times of the three-layer joint strip prepared in the embodiment is 4100 times.
Comparative example 1
According to the comparative example, a common normal-temperature hot-melt adhesive tape on the market is purchased, the common normal-temperature hot-melt adhesive tape is adhered to a test plate in a hot rolling mode, the hot rolling temperature is 190 ℃, the test plate is placed at normal temperature for 24 hours after the hot rolling is finished, and before the peel strength test of the adhesive tape, a sample is placed in a 190 ℃ oven for 30 minutes in order to simulate the high-temperature working condition environment of a dust remover; after being taken out, the common normal-temperature hot-melt adhesive tape is found to be peeled completely and separated from the test plate.
The wear-resisting test of the purchased common normal-temperature hot-melt adhesive tape is carried out according to the national standard GB/T21196.2-2007, and the test result shows that the wear-resisting times of the common normal-temperature hot-melt adhesive tape is 3400 times.
Comparative example 2
The comparative example adopts the same method as that of example 1, uniformly mixing 70-85% of polytetrafluoroethylene micro powder particles, 20-25% of liquid circulation extrusion aid, 5-10% of tackifying particles and 5-10% of carbon black, putting the mixture into a mixing barrel, putting the mixing barrel on a mixer for mixing, rotating forwards for 45-60min and then rotating backwards for 45-60min to fully mix various raw materials to form a mixed material, putting the mixed material into a drying room for standing to form a mixed cooked material; then the mixed cooked material is put into a pre-pressing forming machine to be extruded into a cylindrical blank; forming the blank into a continuous thin cylinder through a pushing and pressing machine; rolling the substrate film into a polytetrafluoroethylene-based film by a calendar, and controlling the thickness of the substrate film to be 10-20 mu m; and then uniformly mixing 70-80% of polyethylene, 10-20% of softener, 1-2% of coupling agent and 5-10% of white carbon black to obtain a polyethylene hot melt adhesive layer, coating a polytetrafluoroethylene-based layer film on the polyethylene layer at 200 ℃, controlling the whole thickness to be 40 mu m, and cutting the polytetrafluoroethylene-based layer film into narrow strips with the width of 30mm to obtain the double-layer sealing adhesive tape of the polytetrafluoroethylene-based layer and the polyethylene hot melt layer.
Sticking the prepared double-layer sealant strip of the polytetrafluoroethylene layer and the polyethylene hot-melt layer onto a test plate in a hot rolling mode, wherein the hot rolling temperature is 190 ℃, standing for 24 hours at normal temperature after the hot rolling is finished, placing the sample into a 190 ℃ oven for 30 minutes before the strip peel strength test in order to simulate the high-temperature working condition environment of a dust remover, taking out and calculating the peel strength, and the results are shown in table 1.
Table 1 shows the results of measuring the peel strengths of examples 1 to 3 and comparative examples 1 to 2
| Example No. 2 | Peel strength |
| Example 1 | 0.28kN/m |
| Example 2 | 0.32kN/m |
| Example 3 | 0.32kN/m |
| Comparative example 1 | Peeling completely and separating from the test plate |
| Comparative example 2 | 0.22kN/m |
As shown in Table 1, the peel strength of the three-layer hot melt adhesive tape prepared by the invention is higher than that of the common normal-temperature hot melt adhesive tape purchased on the market and the double-layer hot melt adhesive tape prepared in the comparative example 2, the common normal-temperature hot melt adhesive tape purchased on the market is completely peeled and separated from a test plate, the peel strength of the double-layer hot melt adhesive tape prepared in the comparative example 2 is only 0.22kN/m, the peel strength of the three-layer sealing adhesive tape prepared by the method of the invention reaches 0.32kN/m, and the peel strength is not increased or is not increased obviously after the thickness of the sealing adhesive tape is increased to 50 μm.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The manufacturing method of the filter bag needle eye sealing hot melt adhesive tape is characterized by comprising the following steps:
(1) uniformly mixing 65-75% of polytetrafluoroethylene micro-powder particles, 15-20% of liquid circulation extrusion aid, 5-7% of tackifying particles and 5-8% of carbon black according to the mass fraction ratio, putting the mixture into a mixing barrel, putting the mixing barrel on a mixer for mixing, rotating forwards for 45-60min, and then rotating backwards for 45-60min to fully mix various raw materials to form a mixed material, putting the mixed material into a drying room for standing to form a mixed cooked material;
(2) putting the mixed cooked material formed in the step (1) into a pre-pressing forming machine to extrude the mixed cooked material into a cylindrical blank; forming the blank into a continuous thin cylinder through a pushing and pressing machine; rolling the substrate film into a polytetrafluoroethylene-based film by a calendar, and controlling the thickness of the substrate film to be 10-20 mu m;
(3) uniformly mixing 75-87% of polyurethane adhesive, 5-10% of carbon black, 5-10% of clay, 1-2% of coupling agent and 2-3% of drying agent according to the mass fraction ratio to obtain a polyurethane mixture, coating the polyurethane mixture on the polytetrafluoroethylene-based layer film obtained in the step (2) through a coating machine to form a polyurethane intermediate layer, and controlling the overall thickness to be 20-40 mu m;
(4) uniformly mixing 70-84% of polyethylene, 10-20% of softener, 1-2% of coupling agent and 5-8% of white carbon black according to the mass fraction ratio to obtain a polyethylene hot melt adhesive layer, coating the polyethylene hot melt adhesive layer on the polyurethane intermediate layer obtained in the step (3), controlling the overall thickness to be 40-60 mu m, and cutting the polyurethane hot melt adhesive layer into narrow strips with the width of 20-30mm to obtain the sealing adhesive tape.
2. The manufacturing method of the filter bag needle eye sealing hot melt adhesive tape according to claim 1, characterized in that: the liquid circulation extrusion aid in the step (1) comprises kerosene or petroleum ether.
3. The manufacturing method of the filter bag needle eye sealing hot melt adhesive tape according to claim 1, characterized in that: the tackifying particles in the step (1) comprise atactic polypropylene or low-molecular polyisobutylene.
4. The manufacturing method of the filter bag needle eye sealing hot melt adhesive tape according to claim 3, characterized in that: the rotating speed of forward rotation and the rotating speed of reverse rotation in the step (1) are both 6-10 r/min.
5. The manufacturing method of the filter bag needle eye sealing hot melt adhesive tape according to claim 1, characterized in that: and (2) standing the mixed material in the step (1) for 7-9h in a drying room, wherein the temperature of the drying room is 50-70 ℃.
6. The manufacturing method of the filter bag needle eye sealing hot melt adhesive tape according to claim 1, characterized in that: the extrusion temperature of the pre-pressing forming machine in the step (2) is 30-50 ℃.
7. The manufacturing method of the filter bag needle eye sealing hot melt adhesive tape according to claim 1, characterized in that: the pushing temperature of the pushing machine in the step (2) is 40-60 ℃.
8. The manufacturing method of the filter bag needle eye sealing hot melt adhesive tape according to claim 1, characterized in that: the calendering temperature of the calender in the step (2) is 60-80 ℃.
9. The manufacturing method of the filter bag needle eye sealing hot melt adhesive tape according to claim 1, characterized in that: and (3) coupling agents in the step (3) and the step (4) are silane coupling agents.
10. The manufacturing method of the filter bag needle eye sealing hot melt adhesive tape according to claim 1, characterized in that: the softener in the step (4) is silane-based oil.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106990204A (en) * | 2017-05-19 | 2017-07-28 | 云南中烟工业有限责任公司 | The Pressure chamber and its encapsulating method of a kind of cigarette smoking machine |
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| WO1991007278A1 (en) * | 1989-11-17 | 1991-05-30 | W.L. Gore & Associates, Inc. | Thin seam sealing tape |
| US5589028A (en) * | 1994-11-03 | 1996-12-31 | Elf Atochem North America, Inc. | Bonding method employing tie layers for adhering polyethylene to fluoropolymers |
| CN104258636A (en) * | 2014-05-19 | 2015-01-07 | 中材科技股份有限公司 | An air purification and filtration material and a preparing method thereof |
| CN105153951A (en) * | 2015-07-21 | 2015-12-16 | 安徽省元琛环保科技有限公司 | High-temperature-resistant polytetrafluoroethylene hot melt adhesive belt for dedusting filter bag |
| CN105623549A (en) * | 2015-12-31 | 2016-06-01 | 安徽省元琛环保科技有限公司 | Novel filter bag needle hole coating method |
| CN211570528U (en) * | 2019-12-06 | 2020-09-25 | 江苏庞浙伟环保材料科技有限公司 | Special glue for sealing and bonding needle holes of dust-removing filter bags |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990204A (en) * | 2017-05-19 | 2017-07-28 | 云南中烟工业有限责任公司 | The Pressure chamber and its encapsulating method of a kind of cigarette smoking machine |
| CN106990204B (en) * | 2017-05-19 | 2023-09-26 | 云南中烟工业有限责任公司 | Pressure bin for cigarette smoking machine and sealing method thereof |
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| CN112625615B (en) | 2022-02-22 |
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Denomination of invention: A kind of manufacturing method of filter bag needle eye sealing hot-melt adhesive strip Effective date of registration: 20220812 Granted publication date: 20220222 Pledgee: Agricultural Bank of China Limited Hefei Xinzhan high tech Zone sub branch Pledgor: ANHUI YUAN CHEN ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Registration number: Y2022340000024 |
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