CN111534866A - Melt-blowing die head for producing melt-blown cloth - Google Patents
Melt-blowing die head for producing melt-blown cloth Download PDFInfo
- Publication number
- CN111534866A CN111534866A CN202010523725.4A CN202010523725A CN111534866A CN 111534866 A CN111534866 A CN 111534866A CN 202010523725 A CN202010523725 A CN 202010523725A CN 111534866 A CN111534866 A CN 111534866A
- Authority
- CN
- China
- Prior art keywords
- spinneret
- hot air
- cavity
- air outlet
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004744 fabric Substances 0.000 title claims abstract description 13
- 238000007664 blowing Methods 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 229920000642 polymer Polymers 0.000 claims description 10
- 238000000034 method Methods 0.000 claims 1
- 239000007921 spray Substances 0.000 abstract description 3
- 238000005491 wire drawing Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
A melt-blown die head for producing melt-blown cloth comprises a die head body, a distribution plate, a spinneret tube, a spinneret plate body and a screen plate, wherein the spinneret plate body comprises a hot air flow cavity, a counter bore arranged on a top plate of the hot air flow cavity, a plurality of spinneret tube holes arranged on a bottom plate of the counter bore, a hot air outlet hole arranged on the bottom plate of the hot air flow cavity and a hot air outlet hole communicated with the hot water flow cavity; the upper end of the spinneret tube is embedded with the spinneret tube hole, the lower end of the spinneret tube hole extends into the hot air outlet hole, and a gap between the spinneret tube and the hot air outlet hole forms an annular hot air channel; the screen is embedded in the counter bore. The single high-speed hot air flow is sprayed out to surround the single spinneret to spray out filaments, so that the filaments are stretched one by one, and uniform filament strips can be obtained. The optimal wire drawing speed is realized by adjusting the pressure of hot air flow in the hot air flow cavity. The multi-row spinneret orifices can reasonably and alternately obtain proper strand silk spacing to ensure even distribution density, and more spinneret orifices can be arranged in unit length of the multi-row spinneret orifices compared with the traditional spray head, so that the yield is greatly improved.
Description
Technical Field
The present invention relates to a meltblown die head for producing meltblown webs.
Background
At present, in the prior art, a melt-blown head structure of a melt-blown machine includes a mold body which is symmetrical up and down, a central flow channel is provided between the upper mold body and the lower mold body, the mold body includes a base body, a heating device and an airflow distribution device, the heating device includes a first heating block and a second heating block, the first heating block and the second heating block are fixedly connected with a distribution plate, a first flow channel and a second flow channel which are perpendicular to each other are formed between the airflow distribution device and the base body, the airflow distribution device has an airflow inlet hole, a first flow guide channel and a second flow guide channel which are connected in sequence, the side part of the airflow distribution device further has an inclined channel, the inclined channel is communicated with the first flow channel, and the second flow guide. There are problems in that: the structure is complex, and the structure is complex,
disclosure of Invention
The purpose of the invention is: a meltblown die head for producing meltblown webs is provided which features a hot gas stream surrounding and drawing each filament of the polymer melt.
The invention is realized by the following steps: a melt-blown die head for producing melt-blown cloth comprises a die head body, a distribution plate and a spinneret, wherein the die head body comprises a polymer melt cavity with a lower opening and a polymer melt-in joint; the distribution plate is provided with a plurality of distribution holes and is arranged in the polymer melt cavity; it is characterized in that: the spinneret plate body comprises a hot air flow cavity, a counter bore arranged on a top plate of the hot air flow cavity, a plurality of spinneret tube holes arranged on a base plate of the counter bore, a hot air outlet hole arranged on a base plate of the hot air flow cavity and a hot air outlet hole communicated with the hot water flow cavity; the axes of the spinneret orifice and the hot air outlet are superposed;
the upper end of the spinneret tube is embedded with the spinneret tube hole, the lower end of the spinneret tube hole extends into the hot air outlet hole, and a gap between the spinneret tube and the hot air outlet hole forms an annular hot air channel; the screen is embedded in the counter bore.
Preferably: the lower end surface of the spinneret tube and the lower surface of the bottom plate of the hot airflow cavity are on the same plane;
or the lower surface of the bottom plate of the hot airflow cavity has a height difference with the lower end surface of the spinneret tube.
Preferably: the spinneret tube comprises a liquid inlet guide tube part and a liquid outlet capillary tube part positioned at the lower part.
Preferably: the inner cavity of the liquid inlet guide pipe part of the spinneret is provided with a plurality of circular cavities from top to bottom, the diameter of the circular cavity at the upper part is larger than that of the circular cavity at the lower part, and two adjacent circular cavities are communicated through an inverted frustum-shaped compression cavity; the circular cavity at the lower end is communicated with the liquid outlet capillary part through an inverted cone frustum-shaped compression cavity.
Preferably: the outer circumferential surface of the lower part of the spinneret tube comprises a cylindrical part, a small-cone-angle inverted-cone-shaped part, a large-cone-angle inverted-cone-shaped part and a lower cylindrical part from top to bottom;
the lower cylindrical part is matched with the cylindrical air jet part, the large-cone-angle inverted-cone-frustum-shaped part is opposite to the middle lower part of the inverted-cone-frustum-shaped compression part, the small-cone-angle inverted-cone-frustum-shaped part extends to the middle part of the cylindrical air inlet part from the inside of the inverted-cone-frustum-shaped compression part, and the cylindrical part extends into the cylindrical air inlet part.
Preferably: the spinneret orifices are distributed according to a determinant, the spinneret orifices in two adjacent rows or two adjacent rows are spaced, the hot air outlet holes are distributed according to the determinant, and the hot air outlet holes in two adjacent rows or two adjacent rows are spaced.
Preferably: at least three rows of spinneret orifices form a spinneret orifice group, and spinneret orifices in two adjacent rows are spaced; the hot air outlet holes are formed in at least three rows to form a hot air outlet hole group, and the hot air outlet holes in two adjacent rows are spaced.
The melt-blown die head for producing melt-blown cloth adopts the structure, and the single high-speed jet hot air current surrounds the single spinneret to jet filaments to form the drawing one by one, so that uniform filaments can be obtained. The optimal wire drawing speed is realized by adjusting the pressure of hot air flow in the hot air flow cavity, so that the optimal wire drawing effect is obtained. The multi-row spinneret orifices can reasonably and alternately obtain proper strand silk spacing to ensure even distribution density, and more spinneret orifices can be arranged in unit length of the multi-row spinneret orifices compared with the traditional spray head, so that the yield is greatly improved.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a view a-a of fig. 1.
Fig. 3 is a partially enlarged view of fig. 2.
Fig. 4 is a front view of the distributor plate of the present invention.
Fig. 5 is a bottom view of the distributor plate of the present invention.
Fig. 6 is a top view of the spinneret body and spinneret assembly of the present invention.
Fig. 7 is a front view of the spinneret body and spinneret assembly of the present invention.
FIG. 8 is a front view of a spinneret tube according to the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in FIG. 1, a melt-blowing die for producing a melt-blown fabric comprises a die body 1, a distribution plate 2 and a spinneret 3, wherein the die body 1 comprises a polymer melt cavity 11 with a lower opening and a polymer melt-in joint 12; the distribution plate 2 is provided with a plurality of distribution holes 21, and the distribution plate 2 is arranged in the polymer melting cavity 11;
the spinneret plate comprises a spinneret plate body 4 and a screen plate 5, wherein the spinneret plate body 4 comprises a hot air flow cavity 41, a counter bore 42 arranged on a top plate of the hot air flow cavity 41, a plurality of spinneret tube holes 43 arranged on a base plate of the counter bore, a hot air outlet hole 44 arranged on a base plate of the hot air flow cavity and a hot air outlet hole 45 communicated with the hot water flow cavity; the axes of the spinneret holes 43 and the hot air outlet holes 44 are superposed;
the upper end of the spinneret tube 3 is embedded with the spinneret tube hole 43, the lower end of the spinneret tube hole 3 extends into the hot air outlet hole 44, and a gap between the spinneret tube 3 and the hot air outlet hole 44 forms an annular hot air channel; the mesh plate 5 is embedded in the counterbore 42.
The lower end surface of the spinneret tube 3 and the lower surface of the bottom plate of the hot air flow cavity 41 are on the same plane;
or the lower surface of the bottom plate of the hot air flow cavity 41 has a height difference with the lower end surface of the spinneret 3.
The spinneret tube 3 comprises a liquid inlet guide tube part 31 and a liquid outlet capillary tube part 32 positioned at the lower part;
the inner cavity of the liquid inlet guide pipe part 31 of the spinneret 3 is provided with a plurality of circular cavities 311 from top to bottom, the diameter of the circular cavity 311 at the upper part is larger than that of the circular cavity 311 at the lower part, and two adjacent circular cavities 311 are communicated through an inverted frustum-shaped compression cavity 312; the circular cavity 311 at the lower end is communicated with the liquid outlet capillary tube part 32 through an inverted frustum-shaped compression cavity 312.
The outer circumferential surface of the lower part of the spinneret tube 3 comprises a cylindrical part 33, a small-cone-angle inverted cone frustum-shaped part 34, a large-cone-angle inverted cone frustum-shaped part 35 and a lower cylindrical part 36 from top to bottom;
the hot air outlet 44 has a cylindrical inlet 441, an inverted truncated cone compressor 442 and a cylindrical jet 443 from the top to the bottom
The lower cylindrical portion 36 is fitted to the cylindrical gas ejection portion 443, the large-cone-angle inverted-cone-shaped portion 35 is opposed to the middle-lower portion of the inverted-cone-shaped compression portion 442, the small-cone-angle inverted-cone-shaped portion 34 extends from inside the inverted-cone-shaped compression portion 442 to the middle of the cylindrical gas inflow portion 441, and the cylindrical portion 33 extends into the cylindrical gas inflow portion 441.
The spinneret holes 43 are distributed according to a determinant, the spinneret holes 43 in two adjacent rows or two adjacent rows are spaced, the hot air outlet holes 44 are distributed according to a determinant, and the hot air outlet holes 44 in two adjacent rows or two adjacent rows are spaced.
Or the spinneret orifices 43 form a spinneret orifice group by three rows, and the spinneret orifices 43 in two adjacent rows are spaced; the hot air outlet holes 44 are formed in a hot air outlet hole group by three rows, and the hot air outlet holes 44 in two adjacent rows are spaced.
What has been described above is merely a preferred embodiment of the present invention. It should be noted that a person skilled in the art could make several modifications and variations without departing from the principle of the present invention, which should also be regarded as the protection scope of the present invention.
Claims (7)
1. A melt-blown die head for producing melt-blown cloth comprises a die head body, a distribution plate and a spinneret, wherein the die head body comprises a polymer melt cavity with a lower opening and a polymer melt-in joint; the distribution plate is provided with a plurality of distribution holes and is arranged in the polymer melt cavity; the method is characterized in that: the spinneret plate body comprises a hot air flow cavity, a counter bore arranged on a top plate of the hot air flow cavity, a plurality of spinneret tube holes arranged on a base plate of the counter bore, a hot air outlet hole arranged on a base plate of the hot air flow cavity and a hot air outlet hole communicated with the hot water flow cavity; the axes of the spinneret orifice and the hot air outlet are superposed;
the upper end of the spinneret tube is embedded with the spinneret tube hole, the lower end of the spinneret tube hole extends into the hot air outlet hole, and a gap between the spinneret tube and the hot air outlet hole forms an annular hot air channel; the screen is embedded in the counter bore.
2. A meltblowing die for producing meltblown fabric according to claim 1 wherein: the lower end surface of the spinneret tube and the lower surface of the bottom plate of the hot airflow cavity are on the same plane;
or the lower surface of the bottom plate of the hot airflow cavity has a height difference with the lower end surface of the spinneret tube.
3. A meltblowing die for producing meltblown fabric according to claim 1 wherein: the spinneret tube comprises a liquid inlet guide tube part and a liquid outlet capillary tube part positioned at the lower part.
4. A meltblowing die for producing meltblown fabric according to claim 3, wherein: the inner cavity of the liquid inlet guide pipe part of the spinneret is provided with a plurality of circular cavities from top to bottom, the diameter of the circular cavity at the upper part is larger than that of the circular cavity at the lower part, and two adjacent circular cavities are communicated through an inverted frustum-shaped compression cavity; the circular cavity at the lower end is communicated with the liquid outlet capillary part through an inverted cone frustum-shaped compression cavity.
5. A meltblowing die for producing meltblown fabric according to claim 1 wherein: the outer circumferential surface of the lower part of the spinneret tube comprises a cylindrical part, a small-cone-angle inverted-cone-shaped part, a large-cone-angle inverted-cone-shaped part and a lower cylindrical part from top to bottom;
the lower cylindrical part is matched with the cylindrical air jet part, the large-cone-angle inverted-cone-frustum-shaped part is opposite to the middle lower part of the inverted-cone-frustum-shaped compression part, the small-cone-angle inverted-cone-frustum-shaped part extends to the middle part of the cylindrical air inlet part from the inside of the inverted-cone-frustum-shaped compression part, and the cylindrical part extends into the cylindrical air inlet part.
6. A meltblowing die for producing meltblown fabrics according to claim 1, 2, 3, 4 or 5 wherein: the spinneret orifices are distributed according to a determinant, the spinneret orifices in two adjacent rows or two adjacent rows are spaced, the hot air outlet holes are distributed according to the determinant, and the hot air outlet holes in two adjacent rows or two adjacent rows are spaced.
7. A meltblowing die for producing meltblown fabrics according to claim 1, 2, 3, 4 or 5 wherein: at least three rows of spinneret orifices form a spinneret orifice group, and spinneret orifices in two adjacent rows are spaced; the hot air outlet holes are formed in at least three rows to form a hot air outlet hole group, and the hot air outlet holes in two adjacent rows are spaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010523725.4A CN111534866A (en) | 2020-06-10 | 2020-06-10 | Melt-blowing die head for producing melt-blown cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010523725.4A CN111534866A (en) | 2020-06-10 | 2020-06-10 | Melt-blowing die head for producing melt-blown cloth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111534866A true CN111534866A (en) | 2020-08-14 |
Family
ID=71972568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010523725.4A Pending CN111534866A (en) | 2020-06-10 | 2020-06-10 | Melt-blowing die head for producing melt-blown cloth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111534866A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112226824A (en) * | 2020-09-30 | 2021-01-15 | 李小刚 | Automatic carry out non-woven fabrics of ratio and spout fine hair feeding device |
| CN112345223A (en) * | 2020-11-03 | 2021-02-09 | 中山市恒滨实业有限公司 | Assembly detection method of spray-melt cloth extrusion die |
| CN113373594A (en) * | 2021-07-01 | 2021-09-10 | 佛山市启新模具有限公司 | Melt-blown fabric mould of multi-row hole shower nozzle |
| WO2022240763A1 (en) * | 2021-05-09 | 2022-11-17 | Fitesa Simpsonville, Inc. | System and process for preparing a fibrous nonwoven composite fabric |
| EP4108815A1 (en) * | 2021-06-21 | 2022-12-28 | Fratelli Ceccato Milano S.r.l. | Multi-row coaxial melt-blown system |
| EP4123063A1 (en) * | 2021-07-21 | 2023-01-25 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Nozzle head for producing filaments |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110076907A1 (en) * | 2009-09-25 | 2011-03-31 | Glew Charles A | Apparatus and method for melt spun production of non-woven fluoropolymers or perfluoropolymers |
| CN103882535A (en) * | 2014-04-11 | 2014-06-25 | 天津工业大学 | Solution jetting spinning die head |
| CN204325558U (en) * | 2014-12-11 | 2015-05-13 | 张良 | A kind of Novel spinneret plate |
| CN207347708U (en) * | 2017-09-26 | 2018-05-11 | 中安信科技有限公司 | Dry-jet wet-spinning spinneret is used in a kind of fine based precursor production of small tow polypropylene |
| CN212476967U (en) * | 2020-06-10 | 2021-02-05 | 王成铸 | Melt-blowing die head for producing melt-blown cloth |
-
2020
- 2020-06-10 CN CN202010523725.4A patent/CN111534866A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110076907A1 (en) * | 2009-09-25 | 2011-03-31 | Glew Charles A | Apparatus and method for melt spun production of non-woven fluoropolymers or perfluoropolymers |
| CN103882535A (en) * | 2014-04-11 | 2014-06-25 | 天津工业大学 | Solution jetting spinning die head |
| CN204325558U (en) * | 2014-12-11 | 2015-05-13 | 张良 | A kind of Novel spinneret plate |
| CN207347708U (en) * | 2017-09-26 | 2018-05-11 | 中安信科技有限公司 | Dry-jet wet-spinning spinneret is used in a kind of fine based precursor production of small tow polypropylene |
| CN212476967U (en) * | 2020-06-10 | 2021-02-05 | 王成铸 | Melt-blowing die head for producing melt-blown cloth |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112226824A (en) * | 2020-09-30 | 2021-01-15 | 李小刚 | Automatic carry out non-woven fabrics of ratio and spout fine hair feeding device |
| CN112345223A (en) * | 2020-11-03 | 2021-02-09 | 中山市恒滨实业有限公司 | Assembly detection method of spray-melt cloth extrusion die |
| WO2022240763A1 (en) * | 2021-05-09 | 2022-11-17 | Fitesa Simpsonville, Inc. | System and process for preparing a fibrous nonwoven composite fabric |
| US11891723B2 (en) | 2021-05-09 | 2024-02-06 | Fitesa Simpsonville, Inc. | System and process for preparing a fibrous nonwoven composite fabric |
| EP4108815A1 (en) * | 2021-06-21 | 2022-12-28 | Fratelli Ceccato Milano S.r.l. | Multi-row coaxial melt-blown system |
| CN113373594A (en) * | 2021-07-01 | 2021-09-10 | 佛山市启新模具有限公司 | Melt-blown fabric mould of multi-row hole shower nozzle |
| EP4123063A1 (en) * | 2021-07-21 | 2023-01-25 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Nozzle head for producing filaments |
| US11992991B2 (en) | 2021-07-21 | 2024-05-28 | Reifenhaeuser Gmbh & Co. Kg Maschinenfabrik | Nozzle for making meltblown filaments |
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