CN115747984A - Processing technology and device for melt-blown blended material - Google Patents
Processing technology and device for melt-blown blended material Download PDFInfo
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- CN115747984A CN115747984A CN202211429464.5A CN202211429464A CN115747984A CN 115747984 A CN115747984 A CN 115747984A CN 202211429464 A CN202211429464 A CN 202211429464A CN 115747984 A CN115747984 A CN 115747984A
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- 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
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Abstract
The invention discloses a processing technology and a processing device for melt-blown blended materials, and relates to the technical field of non-woven fabric production. The processing device comprises a rack, a melt-blowing machine and a web former, wherein the melt-blowing machine comprises two sets of feeding mechanisms, a screw extruder, a filter, a metering pump and two spinning die heads, the two spinning die heads are oppositely and obliquely arranged downwards, the rack is also provided with a carding feeding device, a discharge port of the carding feeding device is positioned between the two spinning die heads, the web former is positioned below the spinning die heads, and the web former is of a flat-screen negative pressure type structure. The processing technology comprises the steps of respectively spraying elastic material melt-blown fibers and conventional material melt-blown fibers by using two spinning die heads, feeding short fibers downwards by using a carding feeding device, and collecting the fiber mixture by using a web former. The non-woven fabric produced by the processing device and the processing technology provided by the invention has the capabilities of heat preservation, ventilation and elasticity.
Description
Technical Field
The invention relates to the technical field of non-woven fabric production, in particular to a processing technology and a processing device for melt-blown blended materials.
Background
With the development of nonwoven fabric processing technology, new types of nonwoven fabrics have emerged. The melt-blown non-woven fabric has good filtering effect, so that the melt-blown non-woven fabric is commonly used for mask production.
Meltblown nonwovens are a common method of making micro and nano fibers. Melting high-melting polypropylene fiber material by high-pressure hot air flow, spraying superfine polypropylene short fiber with the diameter of 0.3-7.0 microns by a high-speed small air nozzle, uniformly paving the superfine polypropylene short fiber on a collecting device under the guidance of the air flow, and randomly interweaving and bonding the short fiber together by utilizing the self waste heat.
However, it is increasingly difficult for the nonwoven fabric of a single material to meet the demands of consumers, and the application of the composite nonwoven fabric is becoming widespread in order to make the performance of the nonwoven fabric more comprehensive and abundant. The composite non-woven fabric is formed by bonding non-woven fabrics with different materials in each layer, for example, the composite elastic non-woven fabric has the characteristics of high elasticity and high filtering capacity.
However, in order to have more complex functional features, such as heat preservation, ventilation, elasticity and filtration capability, the existing production process is somewhat complicated, and a new process needs to be developed to produce a new non-woven fabric.
Disclosure of Invention
The invention aims to provide a processing device for melt-blown blended materials, which is used for producing melt-blown blended materials made of different raw materials through two spinning die heads and a carding feeding device positioned between the two spinning die heads.
The technical purpose of the invention is realized by the following technical scheme:
a processing device for melt-blown blended materials comprises a rack, a melt-blowing machine and a web former, wherein the melt-blowing machine comprises two sets of feeding mechanisms, a screw extruder, a filter, a metering pump and two spinning die heads, the two spinning die heads are oppositely and obliquely arranged downwards, the rack is also provided with a carding and feeding device, a discharge port of the carding and feeding device is positioned between the two spinning die heads, the web former is positioned below the spinning die heads, and the web former is of a flat-screen negative pressure type structure.
By adopting the technical scheme, when in use, the two sets of feeding mechanisms, the screw extruder, the filter, the metering pump and the spinneret die head can use different raw materials to spray melt-blown fibers of different materials, and the carding feeding device can simultaneously feed particles, short fibers and the like with special functions, so that the function of the finished non-woven fabric is richer.
The invention is further configured to: the spinning device further comprises two auxiliary fans, and the two auxiliary fans are respectively located below the two spinning die heads.
Through adopting above-mentioned technical scheme, auxiliary fan can make the fibre of melt-blown concentrate more, also can accelerate the fibre cooling of melt-blown simultaneously.
The invention is further configured to: the device further comprises a fixed-thickness consolidation device, and the fixed-thickness consolidation device comprises two consolidation rollers.
Through adopting above-mentioned technical scheme, the thickness of finished product non-woven fabrics can be controlled to the fixed thick consolidation device.
The invention is further configured to: the frame is provided with a flow guide cover, the upper end of the flow guide cover is of a closed structure, the flow guide cover covers the two spinning die heads and extends downwards to the position of the web former, and the lower end of the flow guide cover is fixedly provided with a wind blocking baffle which is turned outwards.
By adopting the technical scheme, the air guide sleeve can play a role in guiding and restraining the air flow in the air guide sleeve, so that the melt-blown fiber bundle is convenient, simultaneously, the melt-blown fiber, particles and short fibers can be prevented from overflowing to pollute the environment, and the control of processing parameters and the realization of the cleanness of the processing environment are facilitated.
The invention also aims to provide a processing technology of the melt-blown blended material, which combines the elastic material melt-blown fiber, the conventional material melt-blown fiber and the short fiber as a supporting structure by utilizing the processing device to obtain the non-woven fabric with heat preservation, ventilation, elasticity and filtering capability.
The technical purpose of the invention is realized by the following technical scheme:
a processing technology of melt-blown blended materials utilizes two spinning die heads to respectively melt-blow elastic material melt-blown fibers and conventional material melt-blown fibers, utilizes a carding feeding device to feed short fibers downwards, and utilizes a web former to collect the fiber mixture.
By adopting the technical scheme, the elastic material melt-blown fiber can provide elasticity for the finished non-woven fabric, and the short fiber can provide support for the elastic material melt-blown fiber and the conventional material melt-blown fiber, so that the finished non-woven fabric has proper thickness and bulkiness, and the heat preservation and ventilation level of the non-woven fabric is improved.
The invention is further configured to: the short fibers are 3D hollow polyester short fibers.
By adopting the technical scheme, the 3D hollow polyester staple fiber has larger volume in space, so that the bulkiness of the finished non-woven fabric is better.
The invention is further configured to: the mass ratio of the elastic material melt-blown fiber to the conventional material melt-blown fiber to the short fiber is 2.
Through adopting above-mentioned technical scheme, this mix proportion can make off-the-shelf non-woven fabrics possess sufficient intensity and satisfy the filtration demand outside, makes its elasticity, heat preservation and air permeability all obtain effectual promotion.
In conclusion, the beneficial technical effects of the invention are as follows:
(1) The processing device for melt-blown blended materials, provided by the invention, is provided with two spinning die heads, and a carding feeding device is arranged between the two spinning die heads, so that the blending of various raw materials can be realized; and the fiber bundles formed by the two spinning die heads with the structure can be better and uniformly mixed, so that the fiber bundle carding feeding device has a better constraint effect on the particles or short fibers fed by the carding feeding device, and the particles or short fibers are prevented from overflowing to pollute the environment.
(2) The invention provides a processing technology of melt-blown blended material, which utilizes two spinning die heads to respectively generate elastic material melt-blown fiber and conventional material melt-blown fiber, and the elastic material melt-blown fiber and the conventional material melt-blown fiber are combined together with short fiber serving as a supporting structure to form non-woven fabric with high elasticity and high heat preservation; and static electricity is connected to the melt-blowing die head in the production process, so that the melt-blown fibers are charged with static electricity and can adsorb short fibers so as to strengthen the combination with the short fibers, and the melt-blown fibers can also fall onto a web former at an accelerated speed, are not easy to spill and pollute the environment, and the quality of the finished non-woven fabric is also improved.
Drawings
Fig. 1 is a schematic overall structure diagram of a first embodiment of the present invention.
Reference numerals: 1. a feeding mechanism; 2. a screw extruder; 3. a filter; 4. a metering pump; 5. a spinning die head; 6. a carding feeding device; 7. a driving roller; 8. receiving a net; 9. a negative pressure suction device; 10. an auxiliary fan; 11. a pod; 12. a choke baffle; 13. a consolidation roller; 14. a material coiling device.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying examples.
The first embodiment is as follows:
referring to the attached figure 1, the processing device for melt-blown blended materials comprises a rack, and a melt-blowing machine, a carding feeding device 6, a web former, an auxiliary fan 10, a fixed-thickness consolidation device, a direct-current power supply and a material coiling device 14 which are arranged on the rack.
The melt-blown machine comprises two sets of feeding mechanisms 1, a screw extruder 2, a filter 3, a metering pump 4 and two spinning die heads 5, wherein the two spinning die heads 5 are oppositely and obliquely arranged downwards. The cross-sectional shape of the spinneret die heads 5 is a triangular structure, so that the two spinneret die heads 5 which are obliquely arranged can be closer to each other, and larger mixing areas of fiber bundles formed by the two spinneret die heads 5 are facilitated.
The discharge port of the carding feeding device 6 is positioned between the two spinneret dies 5, the carding feeding device 6 is detachably arranged on the frame, and by replacing different carding feeding devices 6, particles and short fibers can be added into the non-woven fabric in the production process to obtain the non-woven fabrics with different functions. Wherein, the particulate matter can be active carbon and high molecular water-absorbent resin particles, and the short fiber can be 3D hollow polyester short fiber and wood pulp fiber.
The lapper is located spinning die head 5 below, and the lapper is flat net negative pressure formula structure, including driving roller 7 and receiving net 8, and driving roller 7 is located receiving net 8's inboard and is connected with receiving net 8 transmission, and receiving net 8's inboard still is provided with negative pressure suction device 9 to in providing suction, the melt blown fibre beam forming and the quick attached netting that impel spinning die head 5 to form.
The auxiliary blowers 10 are arranged below the two spinneret die heads 5 respectively, and the auxiliary blowers 10 blow air obliquely downwards, so that melt-blown fibers are more concentrated, and the cooling of the melt-blown fibers can be accelerated.
The frame is also fixedly provided with a flow guide cover 11 through bolts, the upper end of the flow guide cover 11 is of a closed structure, the flow guide cover 11 covers the filament outlets of the two filament spraying die heads 5, the discharge port of the carding and feeding device 6 and the air outlet of the auxiliary fan 10 and extends downwards to the position of the web former, and the lower end of the flow guide cover 11 is fixedly provided with a wind blocking baffle 12 which is turned outwards. The air guide sleeve 11 can guide and restrict air flow in the air guide sleeve, and a negative pressure state is formed in the air guide sleeve 11 through the auxiliary fan 10, so that melt-blown fiber bundling is facilitated, meanwhile, melt-blown fibers, particles and short fibers can be prevented from overflowing to pollute the environment, and processing parameters can be controlled, and the cleanness of a processing environment can be realized.
The fixed-thickness consolidation device comprises two consolidation rollers 13, the two consolidation rollers 13 are arranged up and down, the position of the consolidation roller 13 close to the lower side is fixed, the consolidation roller 13 close to the upper side can move up and down for adjustment, the specific adjustment mode is common thread adjustment, and redundant description is omitted here. Thus, in actual use, the thickness of the finished nonwoven fabric can be controlled by controlling the distance between the two consolidation rolls 13.
The working principle of the embodiment is as follows: when the device is used, the two sets of feeding mechanisms 1, the screw extruder 2, the filter 3, the metering pump 4 and the spinneret die head 5 can use different raw materials to spray melt-blown fibers of different materials, and the carding feeding device 6 can simultaneously feed particles, short fibers and the like with special functions, so that the finished non-woven fabric has richer functions and better comprehensive quality.
Example two:
a processing technology of melt-blown blended materials is completed based on the processing device in the first embodiment.
Firstly, the elastic material and the conventional material are respectively fed into two feeding mechanisms 1 in the melt-blowing machine, so that the elastic material melt-blown fiber and the conventional material melt-blown fiber are respectively generated by two spinning die heads 5. In this embodiment, the elastic material is a thermoplastic polyurethane elastomer material, and the conventional material is a polypropylene material.
The short fibers are fed downwards by the carding feeding device 6, specifically the 3D hollow polyester short fibers have a spatial 3D structure, and can support the elastic material melt-blown fibers and the conventional material melt-blown fibers, so that the finished non-woven fabric has better bulkiness.
The mass ratio of the elastic material melt-blown fiber to the conventional material melt-blown fiber to the short fiber is 6.
And collecting the fiber mixture by using a web former, and shaping the non-woven fabric under the auxiliary action of a fixed-thickness consolidation device.
The working principle of the embodiment is as follows: the elastic material melt-blown fiber can provide elasticity for the finished non-woven fabric, and the short fiber can provide support for the elastic material melt-blown fiber and the conventional material melt-blown fiber. The three are mixed, bonded and preliminarily cooled under the action of wind power and static electricity in the air guide sleeve 11, are quickly attached to a web former to form a preliminary non-woven fabric, are shaped into a finished non-woven fabric under the action of a fixed-thickness consolidation device, and finally are rolled by a material rolling device 14. Therefore, the finished non-woven fabric has proper thickness and bulkiness, so that the heat preservation and ventilation level of the non-woven fabric is improved, and the non-woven fabric has certain elasticity.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. The processing device for the melt-blown blended material comprises a rack, a melt-blowing machine and a web former, and is characterized in that: the melt-blown spinning machine comprises two sets of feeding mechanisms (1), a screw extruder (2), a filter (3), a metering pump (4) and spinning die heads (5), wherein the two spinning die heads (5) are oppositely and obliquely arranged downwards, a carding feeding device (6) is further arranged on a rack, a discharge port of the carding feeding device (6) is positioned between the two spinning die heads (5), the web former is positioned below the spinning die heads (5), and the web former is of a flat-screen negative pressure type structure.
2. The processing device of melt-blown blended material according to claim 1, characterized in that: the spinneret plate is characterized by further comprising two auxiliary fans (10), wherein the two auxiliary fans (10) are respectively located below the two spinneret die heads (5).
3. The processing device of melt-blown blended material according to claim 1, characterized in that: the device also comprises a fixed-thickness consolidation device, and the fixed-thickness consolidation device comprises two consolidation rollers (13).
4. The processing device of melt-blown blended material according to claim 1, characterized in that: the spinning and net forming machine is characterized in that a guide cover (11) is arranged on the machine frame, the upper end of the guide cover (11) is of a closed structure, the guide cover (11) covers the two spinning die heads (5) and extends downwards to the position of the net forming machine, and a wind blocking baffle (12) which is turned outwards is fixedly arranged at the lower end of the guide cover (11).
5. A processing technology of melt-blown blended materials is applied to the processing device in claim 1, and is characterized in that: two spinneret dies (5) are used for respectively melt-blowing elastic material melt-blown fibers and conventional material melt-blown fibers, short fibers are fed downwards by a carding feeding device (6), and the fiber mixture is collected by a web former.
6. The processing technology of the melt-blown blended material, according to claim 5, is characterized in that: the short fiber is 3D hollow polyester short fiber.
7. The processing technology of the melt-blown blended material, according to claim 5, is characterized in that: the mass ratio of the elastic material melt-blown fiber to the conventional material melt-blown fiber to the short fiber is 4-8:1-2:1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211429464.5A CN115747984A (en) | 2022-11-15 | 2022-11-15 | Processing technology and device for melt-blown blended material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211429464.5A CN115747984A (en) | 2022-11-15 | 2022-11-15 | Processing technology and device for melt-blown blended material |
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| CN115747984A true CN115747984A (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211429464.5A Pending CN115747984A (en) | 2022-11-15 | 2022-11-15 | Processing technology and device for melt-blown blended material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116356483A (en) * | 2023-06-01 | 2023-06-30 | 称道新材料科技(上海)有限公司 | Preparation method and application of high-density monocomponent antibacterial melt-blown cloth |
-
2022
- 2022-11-15 CN CN202211429464.5A patent/CN115747984A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116356483A (en) * | 2023-06-01 | 2023-06-30 | 称道新材料科技(上海)有限公司 | Preparation method and application of high-density monocomponent antibacterial melt-blown cloth |
| CN116356483B (en) * | 2023-06-01 | 2023-09-12 | 称道新材料科技(上海)有限公司 | Preparation method and application of high-density monocomponent antibacterial melt-blown cloth |
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