CN111636103A - Melt-blown die head - Google Patents
Melt-blown die head Download PDFInfo
- Publication number
- CN111636103A CN111636103A CN202010489902.1A CN202010489902A CN111636103A CN 111636103 A CN111636103 A CN 111636103A CN 202010489902 A CN202010489902 A CN 202010489902A CN 111636103 A CN111636103 A CN 111636103A
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- China
- Prior art keywords
- cover plate
- melt
- hole
- adjustment
- needle tube
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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
-
- 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
- D01D4/022—Processes or materials for the preparation of 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a melt-blowing die head, which belongs to the field of plastic processing machinery and solves the problems of inconvenient processing and higher cost of the melt-blowing die head in the prior art. The invention is mainly used for facilitating the processing of the melt-blown die head, reducing the cost, facilitating the debugging and improving the adaptability of the melt-blown die head.
Description
Technical Field
The invention relates to a plastic processing machine, in particular to a melt-blowing die head.
Background
The diameter of a melt-blowing orifice on a melt-blowing die head for producing melt-blown non-woven fabrics is generally 0.2-0.3 mm, mechanical drilling or laser processing is mostly adopted, burrs or rough surfaces are possibly generated in the melt-blowing orifice due to the processing modes, and the melt-blown orifice is possibly blocked or the flow speed of the melt polymer is influenced to form crystals in the continuous flowing process of the melt polymer, so that the quality of the melt-blown fabrics is influenced. It is therefore generally necessary to subject these meltblown holes to a polishing process, such as with a stream of abrasive schmann particles, prior to use in the production of meltblown webs. The processing one meter broad width melts the spraying cloth, and the correspondence has 1250 ~ 1400 to melt the orifice, and not only the processing work volume that melts the orifice is big, wastes time and energy, and also very high to the requirement of lathe and drill bit moreover, and the processing cost is higher. In addition, individual melt-blown holes are damaged and cannot be maintained, only the spinneret plate can be replaced, the price of the spinneret plate accounts for more than 60% of the whole melt-blown die head, and the maintenance cost is too high.
Disclosure of Invention
The invention aims to provide a melt-blown die head which is easier to process, reduces the processing cost and the use cost, increases the adjustment mode of hot air, is convenient to debug and improves the adaptability.
In order to achieve the purpose, the invention adopts the following technical scheme: a melt-blown die head comprises a first part and a second part, wherein the first part and the second part are assembled to form a melt flow channel, the downstream end of the melt flow channel is a melt-blown orifice, the first part is provided with a first air duct, the second part is provided with a second air duct, a needle tube is clamped and fixed between the first part and the second part, an inner hole of the needle tube forms the melt-blown orifice, the periphery of the rear end of the needle tube is provided with a first conical surface for axial positioning, the diameter of the first conical surface is reduced from back to front, and the first part, the second part is attached to the first conical surface, a first cover plate with a movably adjustable fixed position is arranged at the front end of the first part, a first air outlet gap connected with the first air channel is formed between the first cover plate and the first part, a second cover plate with a movably adjustable fixed position is arranged at the front end of the second part, a second air outlet gap connected with the second air channel is formed between the second cover plate and the second part, and an air outlet of the first air outlet gap and an air outlet of the second air outlet gap are respectively located on two sides of the melt jet hole.
Furthermore, the inner wall of the rear end of the inner hole of the needle tube is provided with a second conical surface, and the diameter of the second conical surface is reduced from back to front.
Furthermore, the front end of the first part is provided with a first inclined plane which forms a first air outlet gap relative to the first cover plate, the front end of the second part is provided with a second inclined plane which forms a second air outlet gap relative to the second cover plate, the front end of the needle tube is provided with a first inclined plane which is parallel and level to the first inclined plane and a second inclined plane which is parallel and level to the second inclined plane, the first inclined plane and the second inclined plane are separated by the front end face of the needle tube, and the first inclined plane, the second inclined plane and the inner hole wall of the needle tube are intersected to form a notch.
Furthermore, a first adjusting hole is formed in the first cover plate, the first bolt penetrates through the first adjusting hole to be connected with the first portion to fix the first cover plate, and the length of the first adjusting hole is larger than the diameter of the thread of the first bolt.
Furthermore, a plurality of first adjusting parts used for driving the first cover plate to move along the length direction of the first adjusting hole are arranged on the first part, and the first adjusting parts are arranged along the length direction of the first cover plate.
Furthermore, first regulating part includes first adjusting bolt, and the first part is equipped with the first screw through-hole with first adjusting bolt complex, and first adjusting bolt passes first screw through-hole and is connected with first apron.
Furthermore, locking nuts are arranged on a part of the first adjusting bolts, and the first adjusting bolts with the locking nuts and the first adjusting bolts without the locking nuts are distributed at intervals.
Furthermore, a second adjusting hole is formed in the second cover plate, a second bolt penetrates through the second adjusting hole to be connected with the second portion to fix the second cover plate, and the length of the second adjusting hole is larger than the diameter of the thread of the second bolt.
Furthermore, a plurality of second adjusting parts used for driving the second cover plate to move along the length direction of the second adjusting hole are arranged on the second part, and the second adjusting parts are arranged along the length direction of the second cover plate.
Furthermore, the second adjusting part comprises a second adjusting bolt, a second threaded through hole matched with the second adjusting bolt is formed in the second part, and the second adjusting bolt penetrates through the second threaded through hole to be connected with the second cover plate.
After the technical scheme is adopted, the invention has the following advantages: the inner hole of the needle tube is adopted to form the melt jet hole, because the needle tube is easy to be processed independently and the surface roughness of the inner hole of the needle tube is easy to be controlled, unnecessary polishing treatment can be reduced, meanwhile, the mode of assembling and clamping the needle tube by the first part and the second part is adopted, only mounting grooves matched with the needle tube are required to be arranged on the first part and the second part, and no punching is required, the requirement on the processing precision is reduced to meet the requirement on the needle tube assembly, because the outer diameter of the needle tube is much larger than the diameter of a melt-blown hole in the prior art, therefore, the size of the mounting groove is correspondingly larger than the diameter of the melt-blown hole, the processing is easier, the processing precision is easier to ensure, the processing cost is reduced to a great extent, and because each needle tube can be independently replaced, compared with the prior art, the maintenance cost is greatly reduced, and the use cost of a user is reduced; because the molten polymer flows from the rear end to the front end of the needle tube in the inner hole of the needle tube, an acting force pushing the needle tube forwards is generated, the first conical surface is arranged to be attached to the first part and the second part, the needle tube can be attached to the first part and the second part more closely, and gapless fit can be realized. The fixed positions of the first cover plate and the second cover plate can be movably adjusted, the widths of the first air outlet gap and the second air outlet gap can be adjusted according to different raw materials or different model products by adjusting the fixed positions of the first cover plate and the second cover plate, the air volume and the air speed of hot air blowing are changed, and the adaptability of the melt-blowing die head to different raw materials or different model products is improved. In addition, the melt-blown die head is formed by assembling two parts, so that the melt runner can be conveniently polished and electroplated.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural view of a meltblowing die of the invention (with the left end cap removed);
FIG. 2 is a schematic view of the left end face of the meltblowing die of FIG. 1;
FIG. 3 is a cross-sectional view of a meltblowing die of the invention;
FIG. 4 is an enlarged view taken at I in FIG. 3;
FIG. 5 is a schematic view of a needle cannula of the present invention;
FIG. 6 is an enlarged view taken at II in FIG. 1;
FIG. 7 is a schematic view of a first part of the present invention;
fig. 8 is an enlarged view at III in fig. 7.
Detailed Description
The invention provides a melt-blowing die head, as shown in fig. 1 to 5, comprising a first part 1 and a second part 2, wherein the first part 1 and the second part 2 are assembled to form a melting runner 100, the downstream end of the melting runner 100 is a melt-blowing hole, the first part 1 is provided with a first air duct 101, the second part 2 is provided with a second air duct 201, a needle tube 3 is clamped and fixed between the first part 1 and the second part 2, an inner hole 300 of the needle tube 3 forms a melt-blowing hole communicated with the melting runner 100, the periphery of the rear end of the needle tube 3 is provided with a first conical surface 301 for axial positioning, the diameter of the first conical surface 301 is reduced from back to front, the first part 1 and the second part 2 are jointed with the first conical surface 301, the invention adopts the inner hole of the needle tube 3 to form the melt-blowing hole, because the needle tube 3 is easy to be processed independently, and the roughness of the inner hole surface of the needle tube 3 is, meanwhile, the mode of assembling and clamping the needle tube 3 by the first part 1 and the second part 2 is adopted, only mounting grooves matched with the needle tube 3 are required to be arranged on the first part 1 and the second part 2, punching is not required, the requirement on the processing precision is reduced to meet the requirement on the assembly of the needle tube 3, the outer diameter of the needle tube 3 is much larger than the diameter of a melt-blown hole in the prior art, the size of the mounting groove is correspondingly larger than the diameter of the melt-blown hole, the processing is easier, the processing precision is easier to ensure, the processing cost is reduced to a great extent, and each needle tube 3 can be independently replaced, so that the maintenance cost is greatly reduced and the use cost of a user is reduced compared with the prior art; because the molten polymer flows from the rear end to the front end of the needle tube 3 in the inner hole of the needle tube 3, an acting force pushing forwards is generated on the needle tube 3, the first conical surface 301 is arranged to be attached to the first part 1 and the second part 2, the needle tube 3 can be attached to the first part 1 and the second part 2 more tightly, and gapless fit can be achieved, the molten polymer can be ensured not to enter an assembly gap between the needle tube 3 and the first part 1 and the second part 2, the coaxiality of the conical surface fit structure is higher, the assembly and disassembly are convenient, although the assembly and disassembly are carried out for many times, the accurate centering action can be still ensured, the needle tube 3 is also more convenient to replace, and the needle tube can be put into use quickly after replacement. Aiming at the melt-blown processing of different raw materials or different product models, the melt-blown holes formed by the inner holes of the needle tubes and the melt-blown holes formed by the conventional drilling processing are adopted, different requirements are required for parameters such as the air quantity and the air speed of hot air, the invention can not be completely applied to the conventional melt-jet orifice, therefore, in order to enable an operator to conveniently and quickly adjust the air volume and the air speed blown by hot air, the front end of the first part 1 is provided with the first cover plate 11 with the movable adjusting and fixing position, a first air outlet gap 102 connected with the first air duct 101 is formed between the first cover plate 11 and the first part 1, the front end of the second part 2 is provided with the second cover plate 21 with the movable adjusting and fixing position, a second air outlet gap 202 connected with the second air duct 201 is formed between the second cover plate 21 and the second part 2, and an air outlet of the first air outlet gap 102 and an air outlet of the second air outlet gap 202 are respectively positioned on two sides of the melt jet hole. The fixed positions of the first cover plate 11 and the second cover plate 21 can be movably adjusted, the widths of the first air outlet gap 102 and the second air outlet gap 202 can be adjusted according to different raw materials or different model products by adjusting the fixed positions of the first cover plate 11 and the second cover plate 21, the air volume and the air speed of hot air blowing are changed, and the adaptability of the melt-blowing die head to different raw materials or different model products is improved. In addition, the melt-blown die head is formed by assembling two parts, so that the melt runner can be conveniently polished and electroplated.
The hot air is blown out from the outlet of the first air outlet gap 102 and the outlet of the second air outlet gap 202, and the molten polymer sprayed from the melt-blowing holes is blown onto a receiving device, such as a condensation screen or a roller, to produce the non-woven fabric.
In order to make the molten polymer flow into the melt injection hole more smoothly, a second tapered surface 302 may be provided on the inner wall of the rear end of the inner bore of the needle tube 3, and the diameter of the second tapered surface 302 may be reduced from the rear to the front. In this embodiment, the first tapered surface 301 and the second tapered surface 302 are conical surfaces, which facilitates the processing and installation of the needle tube 3. It will be appreciated that the use of a pyramid surface is also possible, although a small increase in cost may be possible.
The front end of the first part 1 is provided with a first inclined plane 121 opposite to the first cover plate 11 to form a first air outlet gap 102, the front end of the second part 2 is provided with a second inclined plane 221 opposite to the second cover plate 21 to form a second air outlet gap 202, in order to reduce the amount of agglomerated polymers in melt-blown non-woven fabric, the front end of the needle tube 3 is provided with a first inclined plane 303 flush with the first inclined plane 121 and a second inclined plane 304 flush with the second inclined plane 221, the first inclined plane 303 and the second inclined plane 304 are separated by the front end surface of the needle tube 3, and the first inclined plane 303 and the second inclined plane 304 intersect with the inner hole 300 wall of the needle tube to form a notch 306. Because the notches 306 are formed on the two sides of the front end of the needle tube 3, the molten polymer moves to the front end face of the needle tube 3 and then begins to separate from the needle tube 3, the molten polymer is contacted with hot air through the two notches 306 before leaving the needle tube 3, and is not directly separated from the needle tube 3 under the holding action of the needle tube 3 because of being contacted with the needle tube 3 while being drawn to form fibers by the hot air, so that the molten polymer can be fully stretched to form superfine fibers, and the occurrence of lumpy polymers is reduced.
Referring to fig. 6, in order to adjust the fixing position of the first cover plate 11, a first adjusting hole 111 may be provided on the first cover plate 11, a first bolt 112 penetrates through the first adjusting hole 111 to be connected with the first portion 1 to fix the first cover plate 11, and the length of the first adjusting hole 111 is greater than the thread diameter of the first bolt 112, for example, the first adjusting hole 111 may be configured as a waist hole, and if the bolt head of the first bolt 112 is also sunk into the first adjusting hole 111, the length of the first adjusting hole 111 needs to be greater than the diameter of the bolt head of the first bolt 112.
Since the first cover plate 11 has a longer length, and the adjustment of the fixing position of the first cover plate 11 belongs to the adjustment of a smaller range, in order to realize the adjustment of the smaller range and ensure the straightness of the first cover plate 11 after adjustment, a plurality of first adjusting members 13 for driving the first cover plate 11 to move along the length direction of the first adjusting holes 111 may be provided on the first portion 1, and the first adjusting members 13 are arranged along the length direction of the first cover plate 11. In this embodiment, the first adjusting member 13 comprises a first adjusting bolt, and the first portion 1 is provided with a first threaded through hole matched with the first adjusting bolt, and the first adjusting bolt passes through the first threaded through hole to be connected with the first cover plate 11. Instead of a screw adjustment, a wedge or the like can be used. To ensure that the first cover plate 11 can maintain a fixed position for a long time after adjustment, a locking nut 131 may be provided on a portion of the first adjusting bolt, and the first adjusting bolt having the locking nut 131 and the first adjusting bolt without the locking nut 131 may be spaced apart.
In the same way, in order to adjust the fixing position of the second cover plate 21, a second adjusting hole 211 may be formed in the second cover plate 21, the second bolt 212 passes through the second adjusting hole 211 to be connected with the second portion 2 to fix the second cover plate 21, and the length of the second adjusting hole 211 is greater than the thread diameter of the second bolt 212. Similar to the first cover plate 11, the second cover plate 21 has a longer length, and in order to achieve fine adjustment and ensure the straightness of the second cover plate 21 after adjustment, a plurality of second adjusting members 23 for driving the second cover plate 21 to move along the length direction of the second adjusting holes 211 may be provided on the second part 2, and the second adjusting members 23 are arranged along the length direction of the second cover plate 21. In this embodiment, the second adjusting member 23 comprises a second adjusting bolt, and the second portion 2 is provided with a second threaded through hole matched with the second adjusting bolt, and the second adjusting bolt passes through the second threaded through hole to be connected with the second cover plate 21. Similar to the first adjusting screw, a locking nut may also be provided on a portion of the second adjusting screw.
Since the first cover plate 11 and the second cover plate 21 are symmetrical, a synchronous adjustment structure, such as a meshing structure of a gear, a rack, etc., can be adopted.
Since the number of the meltblowing holes is large, in order to allow the molten polymer to uniformly flow into all the meltblowing holes, a meltblowing buffer chamber 1001 may be provided at the rear end of the needle tube 3 in the meltblowing duct 100, and the molten polymer may enter the meltblowing holes from the meltblowing buffer chamber 1001.
In order to make the molten polymer flow uniformly and stably in the melt-blown runner, the melt-blown runner 100 may be designed to include a main runner 1002 positioned upstream and in a hanger shape, and a flat runner 1003 positioned between the main runner 1002 and the melt-blown buffer chamber 1001, and a transition buffer chamber 1004 is arranged on the flat runner 1003.
As will be seen below in conjunction with figures 1, 7 and 8.
In order to reliably fix and assemble the first part 1 and the second part 2, a connecting hole 105 may be provided at a position between the melt-blown buffer chamber 1001 and the transition buffer chamber 1004 on the first part 1, a connecting through hole 203 may be provided at a position between the melt-blown buffer chamber 1001 and the transition buffer chamber 1004 on the second part 2, the connecting through hole 203 may be abutted against the connecting hole 105, and a connecting bolt may pass through the connecting through hole and be connected with the connecting hole to fix the first part 1 and the second part 2. In order to secure the first part 1 and the second part 2 more reliably, more connecting holes 105 may be provided on the first part 1, for example, in this embodiment, the entire row of connecting holes 105 is provided on the outer side of the main flow passage 1002, and the corresponding connecting through holes 203 are provided on the second part 2.
In this embodiment, the melt channel 100 is disposed on the first portion, and the second portion covers the melt channel 100, so that only the first portion 1 needs to be clamped, the processing reference is unique, the processing precision is easily ensured, and since the space for forming the melt-blown buffer cavity 1001 and the transition buffer cavity 1004 is large, a portion can be respectively processed on the first portion 1 and the second portion 2, and then the melt-blown buffer cavity 1001 and the transition buffer cavity 1004 are formed by assembling. It will be appreciated that the melt channel 100 could also be provided in the second portion 2, with the first portion 1 covering the melt channel 100; alternatively, the first portion 1 is provided with a first runner groove, the second portion 2 is provided with a second runner groove, and the second runner groove and the first runner groove constitute the melt runner 100.
Be equipped with first cooperation groove 103 that is used for cooperating needle tubing 3 on the first portion 1, because the diameter of needle tubing 3 is less, the specific certain degree of difficulty of first cooperation groove 103 of processing, consequently, can be equipped with the first festival silo 104 that is used for reducing first cooperation groove 103 processing length on first portion 1, first festival silo 104 sets up and alternately communicates with all first cooperation grooves 103 along the length direction of first portion 1, the degree of depth of first festival silo 104 is greater than the degree of depth of first cooperation groove 103, need not consider the machining precision when owing to process first festival silo 104, and the processing length of first cooperation groove 103 shortens the back, the processing degree of difficulty descends, because the first conical surface 301 structure of the rear end design of needle tubing 3 lets the fixed influence that can not receive the processing length of first cooperation groove 103 and shorten of needle tubing 3. The same reason, also can be equipped with the second cooperation groove that is used for cooperating needle tubing 3 on second part 2, be equipped with the second festival silo that is used for reducing second cooperation groove machining length on second part 2, the second festival silo sets up and communicates with all second cooperation grooves alternately along the length direction of second part 2, the degree of depth of second festival silo is greater than the degree of depth of second cooperation groove.
Other embodiments of the present invention than the preferred embodiments described above, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, should fall within the scope of the present invention defined in the claims.
Claims (10)
1. A melt-blowing die head comprises a first part and a second part, wherein the first part and the second part are assembled to form a melting flow channel, the downstream end of the melting flow channel is a melt-blowing hole, the first part is provided with a first air channel, the second part is provided with a second air channel, and the melt-blowing die head is characterized in that a needle tube is clamped and fixed between the first part and the second part, an inner hole of the needle tube forms the melt-blowing hole, the periphery of the rear end of the needle tube is provided with a first conical surface for axial positioning, the diameter of the first conical surface is reduced from back to front, the first part and the second part are attached to the first conical surface, the front end of the first part is provided with a first cover plate capable of movably adjusting and fixing positions, a first air outlet gap connected with the first air channel is formed between the first cover plate and the first part, a second cover plate capable of movably adjusting and fixing positions is arranged at the front end of the second part, and a second air outlet, the air outlet of the first air outlet gap and the air outlet of the second air outlet gap are respectively positioned at two sides of the melt spraying hole.
2. The melt-blowing die head as claimed in claim 1, wherein the inner wall of the rear end of the inner bore of the needle tube is provided with a second conical surface, and the diameter of the second conical surface is reduced from back to front.
3. The melt-blowing die head as claimed in claim 1, wherein the front end of the first part is provided with a first inclined surface opposite to the first cover plate to form a first air outlet gap, the front end of the second part is provided with a second inclined surface opposite to the second cover plate to form a second air outlet gap, the front end of the needle tube is provided with a first inclined surface flush with the first inclined surface and a second inclined surface flush with the second inclined surface, the first inclined surface and the second inclined surface are separated by the front end surface of the needle tube, and the first inclined surface and the second inclined surface intersect with the inner hole wall of the needle tube to form a notch.
4. The melt-blowing die head according to claim 1, 2 or 3, wherein the first cover plate is provided with a first adjusting hole, a first bolt penetrates through the first adjusting hole to be connected with the first part to fix the first cover plate, and the length of the first adjusting hole is larger than the thread diameter of the first bolt.
5. The meltblowing die of claim 4, wherein the first section has a plurality of first adjustment members disposed thereon for driving the first cover plate to move along the length of the first adjustment orifice, the first adjustment members being aligned along the length of the first cover plate.
6. The meltblowing die of claim 5, wherein the first adjustment member comprises a first adjustment bolt, and the first portion is provided with a first threaded through hole that mates with the first adjustment bolt, and the first adjustment bolt passes through the first threaded through hole and connects to the first cover plate.
7. The meltblowing die of claim 6, wherein a portion of the first adjustment bolts are provided with lock nuts, and the first adjustment bolts with lock nuts are spaced apart from the first adjustment bolts without lock nuts.
8. The melt-blowing die head as claimed in claim 1, 2 or 3, wherein the second cover plate is provided with a second adjusting hole, a second bolt penetrates through the second adjusting hole and is connected with the second part to fix the second cover plate, and the length of the second adjusting hole is greater than the thread diameter of the second bolt.
9. The meltblowing die of claim 8, wherein the second section has a plurality of second adjustment members disposed thereon for driving the second cover plate to move along the length of the second adjustment orifices, the second adjustment members being aligned along the length of the second cover plate.
10. The meltblowing die of claim 9, wherein the second adjustment member comprises a second adjustment bolt, and the second portion is provided with a second threaded through hole for mating with the second adjustment bolt, and the second adjustment bolt extends through the second threaded through hole and is coupled to the second cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010489902.1A CN111636103A (en) | 2020-06-02 | 2020-06-02 | Melt-blown die head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010489902.1A CN111636103A (en) | 2020-06-02 | 2020-06-02 | Melt-blown die head |
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| Publication Number | Publication Date |
|---|---|
| CN111636103A true CN111636103A (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010489902.1A Pending CN111636103A (en) | 2020-06-02 | 2020-06-02 | Melt-blown die head |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112342629A (en) * | 2020-11-03 | 2021-02-09 | 中山市恒滨实业有限公司 | Melt-blown fabric extrusion die holder |
| CN114250521A (en) * | 2021-11-24 | 2022-03-29 | 浙江科达包装机械厂 | Processing technology of melt-blown die and melt-blown die |
-
2020
- 2020-06-02 CN CN202010489902.1A patent/CN111636103A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112342629A (en) * | 2020-11-03 | 2021-02-09 | 中山市恒滨实业有限公司 | Melt-blown fabric extrusion die holder |
| CN114250521A (en) * | 2021-11-24 | 2022-03-29 | 浙江科达包装机械厂 | Processing technology of melt-blown die and melt-blown die |
| CN114250521B (en) * | 2021-11-24 | 2022-11-25 | 浙江科达包装机械厂 | Processing technology of melt-blown die and melt-blown die |
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