CN111593485A - Hot runner type non-woven fabric melt-blowing die - Google Patents
Hot runner type non-woven fabric melt-blowing die Download PDFInfo
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- CN111593485A CN111593485A CN202010452418.1A CN202010452418A CN111593485A CN 111593485 A CN111593485 A CN 111593485A CN 202010452418 A CN202010452418 A CN 202010452418A CN 111593485 A CN111593485 A CN 111593485A
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- plate
- hot runner
- spinneret
- hot
- air
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- 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
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D4/00—Spinnerette packs; Cleaning thereof
- D01D4/02—Spinnerettes
- D01D4/025—Melt-blowing or solution-blowing dies
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
Abstract
The invention discloses a hot runner type non-woven fabric melt-blowing die which comprises a bottom plate, a hot runner plate, a die head, a spinneret plate and an air knife, wherein the bottom plate, the hot runner plate and the die head are transversely arranged and are fixedly connected from top to bottom in sequence. The hot runner plate is internally provided with a main hot runner, the bottom plate is provided with a sprue bush, the main hot runner is communicated with the sprue bush, and the main hot runner is communicated with the bottom groove at the bottom of the die head through a plurality of branch hot runners. The spinneret plate is arranged in the die head, a storage tank corresponding to the bottom groove is arranged in the spinneret plate, and the storage tank is communicated with the bottom groove through the shunting filter assembly. The bottom of the spinneret plate is provided with a plurality of spinneret orifices, and the storage tank is communicated with the outside through each spinneret orifice. The air knives are two and are positioned at the front side and the rear side below the spinneret plate. According to the invention, uniform feeding of the bottom groove is realized through the main hot runner and each branch hot runner in the die head, the distribution holes are reasonably arranged, the pressure of hot fluid in the spinneret plate is balanced, the flow velocity consistency of each spinneret hole is realized, and the thickness of the non-woven fabric is uniform.
Description
Technical Field
The invention relates to the technical field of die manufacturing, in particular to a hot runner type non-woven fabric melt-blowing die.
Background
The non-woven fabric is made of polypropylene granules, and has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, recycling and the like. The non-woven fabric has no warp and weft, is light and easy to shape, is very convenient to cut and sew, and becomes a preferred material for producing the mask. The non-woven fabrics adopts the melt-blown mould to produce, and the polypropylene aggregate makes the hot-fluid in the injection molding machine, and the spinneret orifice through the melt-blown mould injects downwards, draws out the silk thread simultaneously under the effect of both sides wind power, because the non-woven fabrics has certain width, needs thousands of spinneret orifices to be linear and arranges, and the cavity of the spinneret plate of the melt-blown mould is the rectangular form that corresponds with the spinneret orifice.
The gate sleeve of the existing melt-blowing die is arranged in the middle, hot fluid with certain pressure is injected into a cavity of a spinneret plate downwards from the middle, so that the pressure in the cavity of the spinneret plate is unbalanced, the injection pressure of spinneret orifices in the middle is high, the injection pressure of spinneret orifices on two sides is low, the produced non-woven fabric is thin in the middle and on two sides, and the product quality is unqualified. Therefore, further improvements are desired in the art.
Disclosure of Invention
In view of the above disadvantages of the prior art, an object of the present invention is to provide a hot-runner type nonwoven fabric melt-blowing die, which solves the problems of non-uniform thickness and poor quality of nonwoven fabrics caused by inconsistent injection pressure of each orifice of the conventional melt-blowing die.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the hot runner type non-woven fabric melt-blowing die comprises a bottom plate, a hot runner plate, a die head, a spinneret plate and an air knife, wherein the bottom plate, the hot runner plate and the die head are transversely arranged and are sequentially and fixedly connected from top to bottom.
The hot runner plate is internally provided with a main hot runner, the bottom plate is provided with a sprue bush, and the main hot runner is communicated with the sprue bush.
The lower part of the main heat runner is provided with a plurality of branch heat runners, and the main heat runner is communicated with a bottom groove arranged at the bottom of the die head through each branch heat runner.
The spinneret plate is arranged in the die head, a storage tank corresponding to the bottom groove is arranged in the spinneret plate, and the storage tank is communicated with the bottom groove through the shunting filter assembly.
The bottom of the spinneret plate is transversely and uniformly provided with a plurality of spinneret orifices, and the storage tank is communicated with the outside through each spinneret orifice.
The air knives are two and are positioned at the front side and the rear side below the spinneret plate.
Further, the die head is of a rectangular structure, and the bottom of the die head is provided with a strip-shaped mounting position formed by inwards sinking.
The spinneret plate is of a rectangular flat plate structure, the spinneret plate is fixed in a long strip-shaped mounting position of the die head in an embedded mode, and the shunting filter assembly is located between the spinneret plate and the die head.
Furthermore, the main heat runner is a straight runner with a uniform cross section and is transversely arranged, and the sprue bush is vertically arranged at the top of the bottom plate.
The main heat runner is bilaterally symmetrical about the axis of the sprue bush, and the lower end of the sprue bush is communicated with the middle position of the main heat runner.
Furthermore, the branch hot runners are straight vertical channels with equal cross sections, and all the branch hot runners are sequentially distributed at equal intervals along the length direction of the main hot runner and are vertically arranged in parallel.
The feeding holes which are equal to the hot runners in number and correspond to the hot runners in a vertical one-to-one mode are formed in the die head, and each feeding hole is communicated with the lower end of the corresponding hot runner through a material guide pipe arranged in the die head.
Furthermore, the bottom groove is located inside the elongated mounting position, the opening of the bottom groove faces downwards, the bottom groove transversely extends along the central axis of the elongated mounting position, and the cross section of the bottom groove is U-shaped.
Further, the stock chest is the open long form cavity in top, and reposition of redundant personnel filter assembly includes filter screen and flow distribution plate, and the filter screen is located the top of flow distribution plate, filter screen and flow distribution plate are all installed on the die head.
A plurality of shunting holes are uniformly formed in other parts of the shunting plate except for the circular solid areas which are equal to the feeding holes in number and are opposite one by one, and each shunting hole is a through hole which is vertically formed.
Furthermore, the bottom of the spinneret plate is provided with a spray hole seat which protrudes downwards relative to the lower surface of the spinneret plate, and the spray hole seat is of a uniform cross-section structure which transversely extends along the central axis of the spinneret plate.
The cross section of the spinneret orifice seat is an isosceles triangle, all spinneret orifices are sequentially arranged at equal intervals along the axial direction of the spinneret orifice seat, and the diameter of each spinneret orifice is 0.15-0.35 mm.
Furthermore, two air inlet main pipes are symmetrically arranged on the front side and the rear side of the die head, and a plurality of air inlet branch pipes are sequentially and uniformly arranged on the outer side of each air inlet main pipe along the length direction of the air inlet main pipe.
Further, two air knives are symmetrically arranged on the front side and the rear side of the orifice seat and are fixedly connected with the bottom of the die head.
The top of the air knife is provided with two air cavities which are arranged along the length direction of the air knife, the two air cavities are arranged in parallel in tandem and communicated, and the air cavity positioned on the outer side is communicated with the air inlet main pipe on the same side.
One side of the air knife close to the spray hole seat is an inclined plane, the front side and the rear side of the spray hole seat are respectively matched with the air knives on the corresponding sides to form air outlet gaps, and air flow in the air cavity can be blown out through the air outlet gaps.
Furthermore, the bottom plate, the hot runner plate, the die head, the spinneret plate and the air knife are all made of metal materials.
By adopting the technical scheme, the invention has the beneficial technical effects that: the invention realizes the uniform material supply to the bottom groove through the main hot runner and each branch hot runner which are uniformly distributed in the die head, and simultaneously, the flow distribution holes are reasonably arranged on the flow distribution plate, so that the pressure of hot fluid in the spinneret plate is balanced, the flow velocity of each spinneret hole is consistent, and the thickness of the formed non-woven fabric is uniform.
Drawings
Fig. 1 is a schematic structural diagram of a hot runner type nonwoven fabric melt-blowing die according to the present invention.
Fig. 2 is a left side view schematic structure of a main body structure of a hot runner type nonwoven fabric melt-blowing mold according to the present invention.
Fig. 3 is a schematic diagram of a portion of the invention of fig. 1 showing a die.
Fig. 4 is a schematic top view of a hot runner type nonwoven melt-blowing mold according to the present invention.
Fig. 5 is a schematic cross-sectional view taken along line a-a of fig. 4 in accordance with the present invention.
Fig. 6 is a schematic cross-sectional view of the invention of fig. 4 taken along the line B-B.
Fig. 7 is a schematic structural view of another portion of the invention of fig. 1, showing a diverter plate.
Fig. 8 is a schematic structural view of a further portion of the invention of fig. 1, showing a spinneret plate.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
with reference to fig. 1 to 8, the hot runner type non-woven fabric melt-blowing die comprises a bottom plate 1, a hot runner plate 2, a die head 3, a spinneret plate 4 and an air knife 5, wherein the bottom plate 1, the hot runner plate 2 and the die head 3 are horizontally arranged and are sequentially and fixedly connected from top to bottom, and the bottom plate 1, the hot runner plate 2, the die head 3, the spinneret plate 4 and the air knife 5 are made of metal materials. The hot runner plate 2 is internally provided with a main hot runner 21, the bottom plate 1 is provided with a sprue bush 11, and the main hot runner 21 is communicated with the sprue bush 11. Specifically, the main heat runner 21 is a straight runner with a uniform cross section and is transversely arranged, and the sprue bush 11 is vertically and fixedly installed at the top of the bottom plate 1.
The main heat runner 21 is bilaterally symmetrical about the axis of the sprue bush 11, and the lower end of the sprue bush 11 is communicated with the middle position of the main heat runner 21. The melt-blown mould disclosed by the invention is connected with an injection molding machine through a flange plate at the upper end of a sprue bush 11, a polypropylene PP raw material is heated to about 300 ℃ in the injection molding machine to form hot fluid, the hot fluid with certain pressure enters the interior of a die head 3 through a feed inlet of the sprue bush 11, the hot fluid is divided to two sides at the joint of the feed inlet and a main heat runner 21, and the hot fluid is uniformly conveyed to the left side and the right side along the main heat runner 21.
The main heat runner 21 has a plurality of branch hot runners 22 below, and the main heat runner 21 is communicated with a bottom groove 32 provided at the bottom of the die head 3 through each branch hot runner 22. The die head 3 is of a rectangular structure, and the bottom of the die head is provided with a strip-shaped mounting position 31 formed by inwards sinking. The bottom groove 32 is located inside the elongated mounting position 31, and has a downward opening, the bottom groove 32 extends transversely along the central axis of the elongated mounting position 31, and the cross section of the bottom groove is U-shaped.
The branch hot runners 22 are straight vertical channels with equal cross sections, and all the branch hot runners 22 are sequentially distributed at equal intervals along the length direction of the main hot runner 21 and are vertically arranged in parallel. The die head 3 is internally provided with feeding holes 33 which are equal to the hot runners 22 in number and correspond to the hot runners in a vertical one-to-one mode, each feeding hole 33 is communicated with the lower end of the corresponding hot runner 22 through one material guide pipe 9 arranged inside the die head 3, the outer portion of each material guide pipe 9 is sleeved with a heating wire of a spiral structure, and the heating wires heat hot fluid of the material guide pipes 9 to ensure that the hot fluid has good fluidity.
In the process of distributing hot fluid from the middle to two sides in the main hot runner 21, the hot fluid simultaneously enters each hot runner 22 downwards and moves downwards along each hot runner 22, the pressure of the fluid in the main hot runner 21 is high, so that the hot fluid is fed to the left and right sides of the main hot runner 21 along the main hot runner 21, the hot fluid is fed into the bottom groove 32 through the hot runners 22, the material guide pipes 9 and the material inlet holes 33 which are positioned on the two sides below the main hot runner 21, the hot fluid in the main hot runner 21 uniformly disperses into the bottom groove 32 through the material inlet holes 33, and the feeding pressures of the hot fluid in the bottom groove 32 are balanced along the length direction.
The spinneret plate 4 is arranged in the die head 3, a storage tank 41 corresponding to the bottom groove 32 is arranged in the spinneret plate, and the storage tank 41 is communicated with the bottom groove 32 through a shunting filter assembly. Specifically, the spinneret plate 4 is of a rectangular flat plate structure, the spinneret plate 4 is fixedly installed in a strip-shaped installation position of the die head 3 in an embedded mode, and the shunting filter assembly is located between the spinneret plate 4 and the die head 3.
The stock chest 41 is the open long form cavity in top, and reposition of redundant personnel filter assembly includes filter screen 6 and flow distribution plate 7, and the filter screen is located the top of flow distribution plate 7, filter screen and flow distribution plate 7 are all installed on die head 3. The filter screen 6 is uniformly provided with a plurality of filter holes, and the filter screen 6 has the function of filtering the hot fluid, so that the hot fluid is prevented from blocking spinneret holes on the spinneret plate 4.
A plurality of distributing holes 71 are uniformly formed in the other parts of the distributing plate 7 except the circular solid areas 72 which are equal in number and are opposite to the feeding holes 33 one by one, and each distributing hole 71 is a through hole which is vertically formed. The circular solid area 72 of the flow distribution plate 7 is an area where the distribution holes 71 are not opened and the hot fluid cannot pass through, and the center of the circular solid area 72 is located on the axis of the corresponding feed hole 33.
The flow distribution plate 7 is used for supporting the filter screen 4 and preventing the filter screen 4 from deforming under the pressure of hot fluid. A plurality of distributing holes 71 are uniformly arranged on the distributing plate 5 except for the circular solid areas 72, and the hot fluid in the bottom groove 32 enters the storage tank 41 through the distributing holes 71. When the hot fluid enters the material storage tank 41 through the feeding holes 33, the filter screen 4 and the splitter plate 5, the circular solid area 72 blocks the hot fluid in the feeding holes 33 from directly impacting downwards, so that the hot fluid is diffused towards the periphery and enters the material storage tank 41 through the splitter holes 71 outside the circular solid area 72, and pressure imbalance of the hot fluid in the material storage tank 41 along the length direction of the hot fluid is avoided.
The bottom of the spinneret 4 has a nozzle seat 42 protruding downward with respect to the lower surface thereof, and the nozzle seat 42 has a uniform cross-sectional structure extending transversely along the central axis of the spinneret 4. The cross section of the nozzle base 42 is an isosceles triangle with a wide upper part and a narrow lower part, a plurality of nozzle holes are transversely and uniformly formed in the bottom of the spinneret plate 4, and the storage tank 41 is communicated with the outside through each nozzle hole. Specifically, all the spinneret holes are sequentially and uniformly arranged at equal intervals along the axial direction of the spinneret hole seat 42, and the diameter of each spinneret hole is 0.25 mm. The hot fluid in the storage tank 41 is discharged downwards through each spinneret orifice, and the discharge pressure and the flow rate of each spinneret orifice 22 are equal because the pressure of the hot fluid in the storage tank 41 is uniform.
Two air inlet main pipes 34 are symmetrically arranged on the front side and the rear side of the die head 3, and a plurality of air inlet branch pipes 35 are sequentially and uniformly arranged on the outer side of each air inlet main pipe 34 along the length direction of the air inlet main pipe. The front side and the rear side of the die head 3 are respectively provided with air path adapters 37 which are equal in number and correspond to the air inlet branch pipes 35 one by one, and the air path adapters 37 are installed on the side wall of the die head 3 through the fixing block 10.
One end of each air inlet branch pipe 35 is connected with an air supply system through a corresponding air path adapter 37, the other end of each air inlet branch pipe is communicated with the corresponding air inlet main pipe 34, and a plurality of vertical air guide pipes 36 are arranged below each air inlet main pipe 34 in parallel at equal intervals. The air supply system supplies air to the air inlet branch pipes 35 in a working state, and the air of each air inlet branch pipe 35 positioned on the same side enters the air inlet main pipe 34 on the same side and then enters the air guide pipe 36 on the same side through the air inlet main pipe 34. The air supply system is in the prior art, and can adopt the existing air compressor.
The number of the air knives 5 is two, the air knives 5 are of a strip structure, and the two air knives 5 are respectively located on the front side and the rear side below the spinneret plate 4. Specifically, the two air knives 5 are symmetrically arranged on the front side and the rear side of the orifice seat 42, and are fixedly connected with the bottom of the die head 3. The top of the air knife 5 is provided with two air cavities which are arranged along the length direction of the air knife, the two air cavities are respectively a first air cavity 51 and a second air cavity 52, the cross sections of the first air cavity 51 and the second air cavity 52 are both U-shaped structures and are arranged in parallel in tandem, the two ends of the first air cavity 51 and the second air cavity 52 are both open structures, and the first air cavity 51 and the second air cavity 52 are communicated with each other through a strip-shaped gap between the air knife 5 and the bottom of the die head 3.
The left end and the right end of the die head 3 are respectively fixedly provided with a cover plate 38, a gasket 39 is arranged between the cover plate 38 and the die head 3, the cover plate 38 and the gasket 39 seal the two ends of the first air cavity 51 and the second air cavity 52, and the second air cavity 52 positioned on the outer side is communicated with the air inlet main pipe 34 on the same side through an air guide pipe 36 above the second air cavity and an air guide pipe 36 above the second air cavity.
During operation, the wind in the air duct 36 enters the second wind cavity 52 under the action of pressure, and then enters the first wind cavity 51 through the strip-shaped gap between the wind knife 5 and the bottom of the die head 3, and the first wind cavity 51 and the second wind cavity 52 both play roles in buffering air flow and stabilizing pressure, so that the wind pressure of the first wind cavity 51 is balanced along the length direction of the first wind cavity. One side of the air knife 5 close to the nozzle hole seat 42 is an inclined surface, the front side and the rear side of the nozzle hole seat 42 are respectively matched with the air knife 5 on the corresponding side to form an air outlet gap 8, the air flow in the first air cavity 51 is blown out through the air outlet gap 8, and the flow velocity of the air flow at each position of the air outlet gap 8 along the length direction of the air knife 3 is balanced and stable.
In the downward discharging process of the spinneret orifices, hot fluid below the spinneret orifices is drawn into continuous threads by airflows blown out from the air outlet gaps 8 on the front side and the rear side of the spinneret orifices, the forming speed of the threads below each spinneret orifice is consistent, and the thickness of each part of the formed non-woven fabric is consistent.
Parts which are not described in the invention can be realized by adopting or referring to the prior art.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.
Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. A hot runner type non-woven fabric melt-blowing die comprises a bottom plate, a hot runner plate, a die head, a spinneret plate and an air knife, and is characterized in that the bottom plate, the hot runner plate and the die head are transversely arranged and are fixedly connected from top to bottom in sequence;
the hot runner plate is internally provided with a main hot runner, the bottom plate is provided with a sprue bush, and the main hot runner is communicated with the sprue bush;
a plurality of branch hot runners are arranged below the main hot runner, and the main hot runner is communicated with a bottom groove arranged at the bottom of the die head through each branch hot runner;
the spinneret plate is arranged in the die head, a storage tank corresponding to the bottom groove is arranged in the spinneret plate, and the storage tank is communicated with the bottom groove through the shunting filter assembly;
the bottom of the spinneret plate is transversely and uniformly provided with a plurality of spinneret orifices, and the storage tank is communicated with the outside through each spinneret orifice;
the air knives are two and are positioned at the front side and the rear side below the spinneret plate.
2. The hot-runner type non-woven fabric melt-blowing mold according to claim 1, wherein the mold head is of a rectangular structure, and the bottom of the mold head is provided with an inwardly-recessed elongated mounting position;
the spinneret plate is of a rectangular flat plate structure, the spinneret plate is fixed in a long strip-shaped mounting position of the die head in an embedded mode, and the shunting filter assembly is located between the spinneret plate and the die head.
3. The hot runner type non-woven fabric melt-blowing die according to claim 1, wherein the main hot runner is a straight runner with a constant cross section and is transversely arranged, and the sprue bush is vertically arranged at the top of the bottom plate;
the main heat runner is bilaterally symmetrical about the axis of the sprue bush, and the lower end of the sprue bush is communicated with the middle position of the main heat runner.
4. The hot runner type non-woven fabric melt-blowing die according to claim 1, wherein the branch hot runners are straight passageways with uniform cross sections, which are vertically arranged, and all the branch hot runners are sequentially distributed at equal intervals along the length direction of the main hot runner and are vertically arranged in parallel;
the feeding holes which are equal to the hot runners in number and correspond to the hot runners in a vertical one-to-one mode are formed in the die head, and each feeding hole is communicated with the lower end of the corresponding hot runner through a material guide pipe arranged in the die head.
5. The hot-runner type non-woven fabric melt-blowing mold according to claim 2, wherein the bottom groove is located inside the elongated mounting position and has a downward opening, the bottom groove extends transversely along a central axis of the elongated mounting position, and the cross section of the bottom groove is U-shaped.
6. The hot runner type non-woven fabric melt-blowing mold according to claim 4, wherein the storage tank is an elongated cavity with an open top, the flow dividing and filtering assembly comprises a filter screen and a flow dividing plate, the filter screen is positioned above the flow dividing plate, and the filter screen and the flow dividing plate are both arranged on the mold head;
a plurality of shunting holes are uniformly formed in other parts of the shunting plate except for the circular solid areas which are equal to the feeding holes in number and are opposite one by one, and each shunting hole is a through hole which is vertically formed.
7. The hot-runner melt-blowing die for the nonwoven fabric according to claim 1, wherein the bottom of the spinneret plate has a nozzle hole seat protruding downward relative to the lower surface thereof, and the nozzle hole seat has a uniform cross-sectional structure extending transversely along the central axis of the spinneret plate;
the cross section of the spinneret orifice seat is an isosceles triangle, all spinneret orifices are sequentially arranged at equal intervals along the axial direction of the spinneret orifice seat, and the diameter of each spinneret orifice is 0.15-0.35 mm.
8. The hot runner type non-woven fabric melt-blowing mold according to claim 7, wherein two main air inlet pipes are symmetrically arranged on the front side and the rear side of the die head, and a plurality of branch air inlet pipes are uniformly arranged on the outer side of each main air inlet pipe in sequence along the length direction of the main air inlet pipe.
9. The hot runner type non-woven fabric melt-blowing mold according to claim 8, wherein the two air knives are symmetrically arranged on the front side and the rear side of the orifice seat and are fixedly connected with the bottom of the die head;
the top of the air knife is provided with two air cavities which are arranged along the length direction of the air knife, the two air cavities are arranged in parallel and communicated in tandem, and the air cavity positioned at the outer side is communicated with the air inlet main pipe at the same side of the air cavity;
one side of the air knife close to the spray hole seat is an inclined plane, the front side and the rear side of the spray hole seat are respectively matched with the air knives on the corresponding sides to form air outlet gaps, and air flow in the air cavity can be blown out through the air outlet gaps.
10. The hot-runner nonwoven melt-blowing die of claim 1, wherein the base plate, the hot runner plate, the die head, the spinneret plate and the air knife are made of a metallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010452418.1A CN111593485A (en) | 2020-05-26 | 2020-05-26 | Hot runner type non-woven fabric melt-blowing die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010452418.1A CN111593485A (en) | 2020-05-26 | 2020-05-26 | Hot runner type non-woven fabric melt-blowing die |
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| Publication Number | Publication Date |
|---|---|
| CN111593485A true CN111593485A (en) | 2020-08-28 |
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| CN202010452418.1A Pending CN111593485A (en) | 2020-05-26 | 2020-05-26 | Hot runner type non-woven fabric melt-blowing die |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112877791A (en) * | 2021-01-12 | 2021-06-01 | 浙江精功机器人智能装备有限公司 | Spinneret plate of melt-blowing die |
| CN114182367A (en) * | 2021-11-24 | 2022-03-15 | 浙江科达包装机械厂 | Melt-blown die |
| CN114182368A (en) * | 2021-11-24 | 2022-03-15 | 浙江科达包装机械厂 | Melt-blown mould |
| CN114672888A (en) * | 2022-04-20 | 2022-06-28 | 黄石市鸿达塑料模具有限责任公司 | Extrusion die for producing non-woven fabric by melt-blowing method |
-
2020
- 2020-05-26 CN CN202010452418.1A patent/CN111593485A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112877791A (en) * | 2021-01-12 | 2021-06-01 | 浙江精功机器人智能装备有限公司 | Spinneret plate of melt-blowing die |
| CN114182367A (en) * | 2021-11-24 | 2022-03-15 | 浙江科达包装机械厂 | Melt-blown die |
| CN114182368A (en) * | 2021-11-24 | 2022-03-15 | 浙江科达包装机械厂 | Melt-blown mould |
| CN114182367B (en) * | 2021-11-24 | 2023-03-10 | 浙江科达包装机械厂 | Melt-blown die |
| CN114672888A (en) * | 2022-04-20 | 2022-06-28 | 黄石市鸿达塑料模具有限责任公司 | Extrusion die for producing non-woven fabric by melt-blowing method |
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