CN210759109U - Preheating type plastic film blowing machine - Google Patents
Preheating type plastic film blowing machine Download PDFInfo
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- CN210759109U CN210759109U CN201921632125.0U CN201921632125U CN210759109U CN 210759109 U CN210759109 U CN 210759109U CN 201921632125 U CN201921632125 U CN 201921632125U CN 210759109 U CN210759109 U CN 210759109U
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Abstract
The utility model discloses a preheat type plastics inflation film manufacturing machine, it includes feeding case, blanking structure, extruder and die head, and the extruder is including extruding the casing, extrudeing the casing and including the pay-off chamber and preheat the chamber, and the pay-off chamber is linked together with the discharge gate of the V template that gathers materials, and the second air pump is linked together with the pay-off chamber, and heating mechanism is linked together with preheating the chamber, preheats the preheating gas outlet that is provided with a plurality of equipartitions on the lateral wall that the chamber is connected with the pay-off chamber. The utility model discloses well second air pump and the mode that heating mechanism that adopts to be linked together respectively with preheat chamber and pay-off chamber and be linked together for a large amount of gas that produce in the subassembly of blowing is taken away by the second air pump after getting into the extruder, and heating mechanism heats the back to gas, preheats the plastic granules in the extruder, and simultaneously, the second aspiration pump makes gas circulate, has avoided in the extruder gas gathering to lead to the problem that extruder discharge end plastic granules extrusion conveying efficiency is low poor.
Description
Technical Field
The utility model relates to a inflation film manufacturing machine technical field especially relates to a preheating type plastics inflation film manufacturing machine.
Background
At present, plastic film blowing machines are used for heating and melting plastic particles and then blowing the plastic particles into films, the film blowing machines are divided into a plurality of types, such as PE, POF and the like, the films are produced by the film blowing machines, the films are widely applied to a plurality of fields according to different materials and characteristics, and the plastic film blowing machines are suitable for various high-grade film packages, plastic bag films, protective films and the like, and the films can be widely used for light and heavy packages due to good barrier property, fresh keeping, moisture prevention, frost prevention, oxygen isolation and oil resistance. For example, the application range of the film blowing machine is mainly determined according to different materials, for example, a film produced by the PP film blowing machine is suitable for bags such as shopping bags and fungus bags in various supermarkets, which have higher hardness and lower requirements on stretching degree, brightness and the like, a film blown out by high-pressure PE is suitable for various freshness protection bags, a film fed back is suitable for various garbage bags and the like, and the film blowing machine is widely applied to various industries.
However, traditional inflation film manufacturing machine does not set up protector at the feed inlet, contains magnetic metal and can lead to the inflation film manufacturing machine to damage in getting into the inflation film manufacturing machine when raw materials plastic pellet, and plastic pellet easily blocks up the extruder entry, makes production efficiency reduce, and is further, and current plastic film inflation film manufacturing machine carries out directly to put into plastic pellet, has the difficult problem that dissolves of plastic pellet.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's defect and not enough, provide a on the basis that magnetic metal gets rid of effectual wind energy carries out the preheating type plastics inflation film manufacturing machine who preheats to plastic granules in the extruder.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a preheating type plastic film blowing machine, which comprises a feeding box, a blanking structure, an extruder and a die head which are connected in sequence, wherein the blanking structure comprises a blanking shell, a magnetic adsorption component and an air blowing component, the magnetic adsorption component is symmetrically arranged in the blanking shell, the air blowing component is arranged in the blanking shell, the blanking shell comprises a containing cavity and a blanking cavity which are arranged in sequence from outside to inside, the magnetic adsorption component is arranged in the containing cavity, an adsorption port is arranged on one side of the containing cavity connected with the blanking cavity, a bulk material inverted V-shaped plate and an aggregate V-shaped plate are arranged in the blanking cavity from top to bottom, the bottom of the bulk material inverted V-shaped plate is lower than the top wall of the adsorption port, the top of the aggregate V-shaped plate is not lower than the bottom wall of the adsorption port, a discharge port is arranged at the bottom of the aggregate V-shaped plate, the transmission mechanism comprises a driving roller and a driven roller which are vertically arranged and rotatably arranged on the side wall of the accommodating cavity and a transmission belt arranged on the driving roller and the driven roller, the driving roller is connected with a first motor, the magnetic object is fixedly arranged on the side wall of the accommodating cavity and positioned between the driving roller and the driven roller, a gap for storing metal is formed between the transmission mechanism and the bottom of the accommodating cavity, a first air pump and an air outlet pipe are connected with the air blowing assembly, an air outlet section of the air outlet pipe is arranged below the bulk material inverted V-shaped plate, and the air outlet form of the air outlet section is fan-shaped; the extruder comprises an extrusion shell, the extrusion shell comprises a feeding cavity and a preheating cavity arranged outside the feeding cavity in a surrounding mode, the feeding cavity is communicated with a discharge hole of the aggregate V-shaped plate, a rotating rod is arranged inside the feeding cavity, a spiral blade is arranged on the surface of the rotating rod, a second motor is arranged at a position, corresponding to the rotating rod, of one side of the extrusion shell, and the feeding box and the blanking structure are arranged above the extrusion shell; the preheating cavity is connected with the feeding cavity through a second air pump and a heating mechanism, the second air pump is communicated with the feeding cavity, the heating mechanism is communicated with the preheating cavity, a plurality of uniformly distributed preheating gas outlets are formed in the side wall, connected with the feeding cavity, of the preheating cavity, and the size of each preheating gas outlet is smaller than the particle size of plastic particles.
Preferably, the top of the magnetic object is not lower than the top wall of the adsorption port, the bottom of the magnetic object is not higher than the bottom wall of the adsorption port, and the width of the magnetic object is not smaller than the width of the adsorption port.
Preferably, the magnetic object is an electromagnet or a permanent magnet.
Preferably, a supporting plate is arranged between the transmission mechanism and the bottom of the accommodating cavity, and a scraping brush is arranged on the supporting plate.
Preferably, a discharge door is arranged on the outer wall of the bottom of the accommodating cavity.
Preferably, the second air pump is communicated with the feeding end of the feeding cavity through an inclined upward pipeline.
Preferably, the heating mechanism is a heating wire heating mechanism or a microwave heating mechanism or a conventional heat exchange mechanism.
Preferably, the air inlet end of the heating mechanism is communicated with the air outlet end of the second air pump, and the air outlet end of the heating mechanism is respectively communicated with the two end parts and the middle part of the preheating cavity through pipelines.
Preferably, the air outlet end of the second air pump is also communicated with a cooling air ring of the die head.
Preferably, the air outlet end of the second air pump is also communicated with a cooling air ring of the die head.
The utility model discloses following beneficial effect has been gained for prior art:
1. the utility model provides a preheating type plastic film blowing machine, which adopts the mode that a bulk material inverted V-shaped plate is arranged in a blanking cavity and magnetic adsorption components are vertically arranged at two sides of the blanking cavity, so that metal is adsorbed on the magnetic adsorption components in the falling process of plastic particles; furthermore, the magnetic material is vertically arranged between the driving roller and the driven roller, and the driving roller and the driven roller are in a non-magnetic mode, so that the magnetic metal can be directly adsorbed on the transmission belt when contacting with the transmission belt, and after passing through the adsorption port, the magnetic force exerted on the transmission belt by the magnetic material is gradually reduced, the magnetic metal can automatically fall to the bottom of the accommodating cavity, and the metal removal efficiency is improved; furthermore, a blowing assembly is arranged in the blanking cavity, the air outlet shape of the air outlet section of the air outlet pipe in the blowing assembly is downward in a fan shape, and the fan-shaped area is ensured to be smaller than the covering area of the aggregate V-shaped plate or the aperture of the air outlet hole at the bottom of the air outlet section is ensured to be far larger than that of the air outlet hole at the side part of the air outlet section, so that negative pressure is formed between the bulk cargo inverted V-shaped plate and the aggregate V-shaped plate, the plastic material is ensured to fall quickly, the plastic particles and the magnetic metal in the plastic material are ensured to be separated quickly at the adsorption port, the separated plastic particles are ensured to shift to the blanking cavity, and the problems of resource waste and secondary separation cost increase caused by the falling of; most importantly, the second air pump and the heating mechanism which are communicated are arranged outside the extrusion shell, and the second air pump and the heating mechanism are respectively communicated with the preheating cavity and the feeding cavity, so that a large amount of gas generated in the blowing assembly is pumped away by the second air pump after entering the extruder, the heating mechanism heats the gas and preheats plastic particles in the extruder, meanwhile, the second air pump enables the gas to circulate, and the problem that the extrusion conveying efficiency of the plastic particles at the discharge end of the extruder is low due to the fact that the gas is gathered in the extruder is avoided.
2. The utility model provides an adopt to set up the mode of scraping the material brush among the preheating type plastics inflation film manufacturing machine for the magnetic metal of stubborn absorption on the drive belt is scraped the material brush and is scraped off, improves metal collection efficiency.
3. The utility model provides an adopt the mode that is linked together the second air pump through the ascending pipeline of slope and the feed end in pay-off chamber among the preheating type plastic film blowing machine for the difficult second air pump that gets into of plastic granules in the pay-off intracavity.
4. The utility model provides an adopt the end of giving vent to anger of heating mechanism to pass through the mode that the pipeline is linked together with both ends and the middle part in preheating the chamber respectively in the preheating type plastics inflation film manufacturing machine for gas after the heating is even, quick entering pay-off intracavity, avoids only getting into in one end and leads to local overheated production to preheat inhomogeneous problem.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic view of the overall structure of the preheating plastic film blowing machine of the present invention;
FIG. 2 is a schematic view of the overall structure of the blanking structure of FIG. 1;
the device comprises a feeding box 1, a blanking structure 2, a die head 3, a blanking shell 4, a blowing assembly 5, a containing cavity 6, a blanking cavity 7, an adsorption port 8, a bulk material pouring V-shaped plate 9, an aggregate V-shaped plate 10, a discharge port 11, a transmission mechanism 12, a magnetic material 13, an extrusion shell 14, a feeding cavity 15, a preheating cavity 16, a rotating rod 17, a helical blade 18, a second motor 19, a second air pump 20, a heating mechanism 21, a preheating gas outlet 22, a support plate 23 and a scraping brush 24.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
An object of the utility model is to prior art's defect and not enough, provide a on the basis that magnetic metal gets rid of effectual wind energy carries out the preheating type plastics inflation film manufacturing machine who preheats to plastic granules in the extruder.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in the figure 1-2, the utility model provides a preheating type plastic film blowing machine, which comprises a feeding box 1, a blanking structure 2, an extruder and a die head 3 which are connected in sequence, wherein the blanking structure 2 comprises a blanking shell 4, a magnetic adsorption component which is symmetrically arranged inside the blanking shell 4 and an air blowing component 5 which is arranged inside the blanking shell 4, the blanking shell 4 comprises a containing cavity 6 and a blanking cavity 7 which are arranged in sequence from outside to inside, the magnetic adsorption component is arranged in the containing cavity 6, an adsorption port 8 is arranged at one side of the containing cavity 6 which is connected with the blanking cavity 7, a bulk material inverted V-shaped plate 9 and a bulk material V-shaped plate 10 are arranged in the blanking cavity 7 in sequence from top to bottom, the bottom of the bulk material inverted V-shaped plate 9 is lower than the top wall of the adsorption port 8, the top of the bulk material V-shaped plate 10 is not lower than the bottom wall of the adsorption port 8, a discharge port 11 is arranged, the transmission mechanism 12 comprises a driving roller and a driven roller which are vertically arranged and rotatably arranged on the side wall of the accommodating cavity 6 and a transmission belt arranged on the driving roller and the driven roller, the driving roller is connected with the first motor, the magnetic object 13 is fixedly arranged on the side wall of the accommodating cavity 6 and positioned between the driving roller and the driven roller, a gap for storing metal is formed between the transmission mechanism 12 and the bottom of the accommodating cavity 6, a first air pump and an air outlet pipe are connected with the air blowing assembly 5, an air outlet section of the air outlet pipe is arranged below the bulk material inverted V-shaped plate 9, and the air outlet form of the air outlet section is fan-shaped; the extruder comprises an extrusion shell 14, the extrusion shell 14 comprises a feeding cavity 15 and a preheating cavity 16 arranged outside the feeding cavity 15 in a surrounding mode, the feeding cavity 15 is communicated with a discharge hole 11 of the aggregate V-shaped plate 10, a rotating rod 17 is arranged inside the feeding cavity 15, a spiral blade 18 is arranged on the surface of the rotating rod 17, a second motor 19 is arranged at a position, corresponding to the rotating rod 17, on one side of the extrusion shell 14, and the feeding box 1 and the blanking structure 2 are arranged above the extrusion shell 14; a second air pump 20 and a heating mechanism 21 which are connected are arranged between the preheating cavity 16 and the feeding cavity 15, the second air pump 20 is communicated with the feeding cavity 15, the heating mechanism 21 is communicated with the preheating cavity 16, a plurality of uniformly distributed preheating gas outlets 22 are arranged on the side wall of the preheating cavity 16 connected with the feeding cavity 15, and the size of the preheating gas outlets 22 is smaller than the particle size of the plastic particles.
The first air pump, the second air pump 20, the first motor and the second motor 19 are all conventional components in the prior art, and therefore, specific limitation is not required, and the specific operations of opening and closing the components can be manual or automatic, and corresponding mature technologies can be found in the prior art, and can be easily known by those skilled in the art, so that specific disclosure is not required; the words such as arrangement and connection between the components described in the utility model do not limit the specific connection mode, and can be operated as long as the connection purpose can be achieved and the connection can be performed, and the prior art has a plurality of fixed connection or movable connection and pipeline connection modes, so the specific disclosure and limitation are not made; the working process is as follows: the plastic material is stored in the feeding box 1, the discharging port 11 of the feeding box 1 is opened (or other mechanisms capable of conveying the material are started), so that the plastic material falls on the bulk material inverted V-shaped plate 9 in the blanking cavity 7 of the blanking structure 2, the first air pump in the air blowing assembly 5 is started while feeding is carried out in the blanking cavity 7, the first air pump is directed to an air curtain in a fan-shaped structure in the blanking cavity 7 through an air outlet pipe, and then negative pressure is formed between the bulk material inverted V-shaped plate 9 and the aggregate V-shaped plate 10, so that plastic particles and magnetic metal in the plastic material are quickly separated at the bulk material inverted V-shaped plate 9 and the adsorption port 8, wherein the magnetic metal is adsorbed on the transmission belt by the magnetic object 13, the plastic particles fall into the blanking cavity 7 and are collected and flowed out in the aggregate V-shaped plate 10, and then the magnetic metal moves along with the transmission belt (the transmission belt rotates on the driving roller and the driven roller along with the rotation of the driving roller driven roller, the plastic particles enter the feeding cavity 15 of the extrusion shell under the action of air, the spiral blades 18 extrude the plastic particles forwards under the rotation action of the rotating rod 17 driven by the second motor 19, and finally the plastic particles are extruded into the die head 3, the second air pump 20 and the heating mechanism 21 are started in the movement process of the plastic particles, the second air pump 20 pumps the air in the feeding cavity 15 out and conveys the air to the heating mechanism 21 for heating, the heated air is conveyed into the preheating cavity 16 through a pipeline and enters the feeding cavity 15 through the preheating air outlet 22 to heat the plastic particles, and the preheating work is completed; it should be noted that: for the heating work of the plastic particles, the heating work can also be carried out in an external heating mode, namely, the gas in the feeding cavity 15 is fed into the heating mechanism 21 through the second air pump 20 for heating, and the heated gas enters the preheating cavity 16 and does not enter the feeding cavity 15; in this case, a gas pressure gauge or a gas pressure sensor may be provided to discharge the gas in the preheating chamber 16 when the pressure value of the gas in the preheating chamber 16 is too high, and further, in order to improve the gas utilization rate, a third gas pump may be provided to pump the gas discharged from the preheating chamber 16 to the heating mechanism 21 by the third gas pump to perform the circulation heating.
In order to ensure the magnetic adsorption capacity of the magnetic substance 13, the top of the magnetic substance 13 is not lower than the top wall of the adsorption port 8, the bottom of the magnetic substance 13 is not higher than the bottom wall of the adsorption port 8, and the width of the magnetic substance 13 is not smaller than the width of the adsorption port 8; furthermore, in order to ensure the effective separation of the metal from the transmission belt, a certain gap exists between the bottom of the magnetic object 13 and the driving roller or the driven roller (determined by which one of the magnetic object 13 and the driving roller is located at the bottom of the accommodating cavity 6), so that the problem of poor separation effect caused by the fact that the metal cannot automatically fall off from the transmission belt due to the fact that the distance between the magnetic object 13 and the driving roller or the driven roller is too close is avoided.
The magnetic material 13 of the present invention is an electromagnet or a permanent magnet.
In the utility model, a support plate 23 is arranged between the transmission mechanism 12 and the bottom of the containing cavity 6, and a scraping brush 24 is arranged on the support plate 23; adopt the mode that sets up scraper brush 24 promptly for the magnetic metal of stubborn absorption on the drive belt is scraped by scraper brush 24 and is fallen, improves metal collection efficiency.
In order to facilitate the discharge of the material, the utility model discloses in be provided with on the bottom outer wall that holds chamber 6 and arrange the bin gate.
In the utility model, the second air pump 20 is communicated with the feeding end of the feeding cavity 15 through a pipeline inclining upwards; namely, the second air pump 20 is communicated with the feeding end of the feeding cavity 15 through an inclined upward pipeline, so that plastic particles in the feeding cavity 15 are not easy to enter the second air pump 20; furthermore, a filter screen is arranged at the joint of the second air pump 20 and the feeding cavity 15, and the aperture of the filter screen is ensured to be smaller than the particle size of the plastic particles, so that the plastic particles are prevented from being sucked away by the second air pump 20; furthermore, the second air pump 20 is communicated with the inside of the feeding cavity 15 through pipelines respectively arranged at the upper part and the lower part of the side wall of the feeding cavity 15, so that the two air pumping ports are mutually influenced, and the problem that plastic particles are gathered to block due to the fact that only one air pumping port is arranged is avoided.
The utility model discloses well heating mechanism 21 is heating wire heating mechanism 21 or microwave heating mechanism 21 or conventional heat transfer mechanism, wherein, heating wire heating mechanism 21 or microwave heating mechanism 21 or conventional heat transfer mechanism are conventional part among the prior art, consequently need not to specifically prescribe a limit to it to the specific operation of opening, closing of above-mentioned part, can be manual or automatic, all can find corresponding mature technology in prior art, and technical staff in the field can be very light knows, so need not to carry out specific disclosure.
In the utility model, the air inlet end of the heating mechanism 21 is communicated with the air outlet end of the second air pump 20, and the air outlet end of the heating mechanism 21 is respectively communicated with the two end parts and the middle part of the preheating cavity 16 through pipelines; namely, the mode that the air outlet end of the heating mechanism 21 is respectively communicated with the two end parts and the middle part of the preheating cavity 16 through pipelines is adopted, so that heated gas can uniformly and quickly enter the feeding cavity 15, and the problem that local overheating is caused to generate uneven preheating due to the fact that the heated gas enters only one end is avoided.
In order to effectively utilize the air, the air outlet end of the second air pump 20 of the present invention is further communicated with a cooling air ring (i.e. a cold air supply part) of the die head 3 (not shown in the figure); furthermore, a cooling mechanism in the prior art, such as a water-cooling heat exchange mechanism, is disposed on the pipeline between the air outlet end of the second air pump 20 and the cooling air ring.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. A preheating type plastic film blowing machine is characterized by comprising a feeding box, a blanking structure, an extruder and a die head which are sequentially connected, wherein the blanking structure comprises a blanking shell, magnetic adsorption components symmetrically arranged in the blanking shell and a blowing component arranged in the blanking shell, the blanking shell comprises a containing cavity and a blanking cavity which are sequentially arranged from outside to inside, the magnetic adsorption components are arranged in the containing cavity, an adsorption port is formed in one side of the containing cavity, which is connected with the blanking cavity, an inclined-V-shaped bulk material plate and an aggregate V-shaped plate are sequentially arranged in the blanking cavity from top to bottom, the bottom of the inclined-V-shaped bulk material plate is lower than the top wall of the adsorption port, the top of the aggregate V-shaped plate is not lower than the bottom wall of the adsorption port, a discharge port is arranged at the bottom of the aggregate V-shaped plate, and the magnetic adsorption components comprise a transmission mechanism and a magnetic substance, the transmission mechanism comprises a driving roller and a driven roller which are vertically arranged and rotatably arranged on the side wall of the accommodating cavity and a transmission belt arranged on the driving roller and the driven roller, the driving roller is connected with a first motor, the magnetic object is fixedly arranged on the side wall of the accommodating cavity and positioned between the driving roller and the driven roller, a gap for storing metal is formed between the transmission mechanism and the bottom of the accommodating cavity, a first air pump and an air outlet pipe are connected with the air blowing assembly, an air outlet section of the air outlet pipe is arranged below the bulk material inverted V-shaped plate, and the air outlet form of the air outlet section is fan-shaped; the extruder comprises an extrusion shell, the extrusion shell comprises a feeding cavity and a preheating cavity arranged outside the feeding cavity in a surrounding mode, the feeding cavity is communicated with a discharge hole of the aggregate V-shaped plate, a rotating rod is arranged inside the feeding cavity, a spiral blade is arranged on the surface of the rotating rod, a second motor is arranged at a position, corresponding to the rotating rod, of one side of the extrusion shell, and the feeding box and the blanking structure are arranged above the extrusion shell; the preheating cavity is connected with the feeding cavity through a second air pump and a heating mechanism, the second air pump is communicated with the feeding cavity, the heating mechanism is communicated with the preheating cavity, a plurality of uniformly distributed preheating gas outlets are formed in the side wall, connected with the feeding cavity, of the preheating cavity, and the size of each preheating gas outlet is smaller than the particle size of plastic particles.
2. The preheating-type plastic film blowing machine according to claim 1, wherein a top of the magnetic substance is not lower than a top wall of the suction port, a bottom of the magnetic substance is not higher than a bottom wall of the suction port, and a width of the magnetic substance is not smaller than a width of the suction port.
3. The preheating-type plastic film blowing machine according to claim 1 or 2, wherein the magnetic substance is an electromagnet or a permanent magnet.
4. The preheating-type plastic film blowing machine according to claim 1, wherein a support plate is arranged between the transmission mechanism and the bottom of the accommodating chamber, and a scraper brush is arranged on the support plate.
5. The preheating-type plastic film blowing machine according to claim 1 or 4, wherein a discharge gate is provided on a bottom outer wall of the accommodating chamber.
6. The preheating-type plastic film blowing machine according to claim 1, wherein the second air pump is communicated with the feeding end of the feeding chamber through a pipeline which is inclined upwards.
7. The preheating-type plastic film blowing machine according to claim 1 or 6, wherein the heating mechanism is a heating wire heating mechanism or a microwave heating mechanism or a conventional heat exchange mechanism.
8. The preheating type plastic film blowing machine according to claim 7, wherein the air inlet end of the heating mechanism is communicated with the air outlet end of the second air pump, and the air outlet end of the heating mechanism is respectively communicated with the two end parts and the middle part of the preheating cavity through pipelines.
9. The preheating type plastic film blowing machine according to claim 8, wherein the air outlet end of the second air pump is further communicated with the cooling air ring of the die head.
10. The preheating type plastic film blowing machine according to claim 1, wherein the air outlet end of the second air pump is further communicated with a cooling air ring of the die head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921632125.0U CN210759109U (en) | 2019-09-28 | 2019-09-28 | Preheating type plastic film blowing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921632125.0U CN210759109U (en) | 2019-09-28 | 2019-09-28 | Preheating type plastic film blowing machine |
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| CN210759109U true CN210759109U (en) | 2020-06-16 |
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| CN201921632125.0U Active CN210759109U (en) | 2019-09-28 | 2019-09-28 | Preheating type plastic film blowing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112538658A (en) * | 2020-11-29 | 2021-03-23 | 李永华 | Self-drying screw extruder for melt-blown non-woven fabric |
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2019
- 2019-09-28 CN CN201921632125.0U patent/CN210759109U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112538658A (en) * | 2020-11-29 | 2021-03-23 | 李永华 | Self-drying screw extruder for melt-blown non-woven fabric |
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