CN112873818A - Film pressing mechanism for co-extrusion blow molding machine - Google Patents
Film pressing mechanism for co-extrusion blow molding machine Download PDFInfo
- Publication number
- CN112873818A CN112873818A CN202011552141.6A CN202011552141A CN112873818A CN 112873818 A CN112873818 A CN 112873818A CN 202011552141 A CN202011552141 A CN 202011552141A CN 112873818 A CN112873818 A CN 112873818A
- Authority
- CN
- China
- Prior art keywords
- moving
- pipe body
- film
- supporting
- pushing
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
Abstract
The invention relates to the field of film production, in particular to a film pressing mechanism for a co-extrusion blow molding machine, which comprises a bearing frame, a supporting mechanism, two extrusion rollers and a moving and pushing mechanism; the supporting mechanism comprises two supporting units, each supporting unit comprises two supporting bars and a plurality of film guide pipes, each film guide pipe comprises a first pipe body and a second pipe body, and spiral sheets are arranged on the inner side wall of each first pipe body; the moving and pushing mechanism comprises a moving and pushing frame, a moving and pushing rod, a cylinder body, a connecting pipe and a lantern ring, the lantern ring is fixedly arranged on the supporting bars, and the moving and pushing frame can push the squeeze roll to move; one end of the second pipe body is fixedly arranged in the sleeve ring, a gap is formed between the second pipe body and the first pipe body and is located at the position of the flow dividing hole, a groove is formed in the end face of the other end of the second pipe body, a tension spring is connected in the annular groove, and the free end of the tension spring is connected with a plugging plate. When the technical scheme is adopted, the production quality of the film is improved.
Description
Technical Field
The invention relates to the field of film production, in particular to a film pressing mechanism for a co-extrusion blow molding machine.
Background
After the film blowing machine blows out the tubular film, the tubular film passes through two rows of obliquely arranged guide rollers under the traction action of the traction rollers, the tubular film is gradually flat, and the two extrusion rollers finally extrude the film into a film containing two films.
The two extrusion rollers are used for extruding two layers of films into one layer of film on one hand, and on the other hand, the two extrusion rollers are used for blocking air blown out by the film blowing machine, so that the phenomenon that the air enters between the two layers of films to influence the quality of the compounded film is avoided.
When the material is inhomogeneous or the raw materials is insufficient when the inflation film manufacturing machine appears crowded material at certain time quantum spiral extrusion mechanism of in-process of blown film, the thickness of film can the attenuation, and when the film was two squeeze rolls after the platykurtic under this kind of circumstances, the air that the inflation film manufacturing machine blew out can get into between two tunica adventitia to lead to the inside production bubble of film, can directly influence the quality of film.
Disclosure of Invention
The invention aims to provide a compression roller mechanism which is beneficial to improving the production quality of a film.
In order to achieve the purpose, the technical scheme of the invention provides a film pressing mechanism for a co-extrusion blow molding machine, which comprises a bearing frame, a supporting mechanism, two extrusion rollers and at least one moving and pushing mechanism, wherein the extrusion rollers are rotationally arranged on the bearing frame; the supporting mechanism comprises two supporting units which are arranged in a relatively inclined mode, each supporting unit comprises two supporting strips and a plurality of film guide pipes, at least one film guide pipe in each supporting unit comprises a first pipe body and a second pipe body, the first pipe body is rotatably arranged on the two supporting strips, and spiral pieces are arranged on the inner side wall of the first pipe body;
the moving and pushing mechanism comprises a moving and pushing frame, a moving and pushing rod, a cylinder body, a connecting pipe and at least one lantern ring, the lantern ring is fixedly arranged on the supporting bar, the side wall of the lantern ring is provided with a shunting hole, the cylinder body is communicated with the shunting hole through the connecting pipe, the moving and pushing rod is slidably arranged in the cylinder body and is fixedly connected with the moving and pushing frame, and the moving and pushing frame can push the extrusion roller to move;
one end of the second pipe body is fixedly arranged in the sleeve ring, a gap is formed between the second pipe body and the first pipe body and is located at the position of the flow dividing hole, a groove is formed in the end face of the other end of the second pipe body, a tension spring is connected in the annular groove, and the free end of the tension spring is connected with a plugging plate.
The technical effect of the scheme is as follows: the invention provides the self-checking and adjusting concept by automatically detecting the thickness of the film and immediately adjusting the distance between the two extrusion rollers, and effectively ensures the production quality of the film.
Specifically, after the film blowing machine blows out the tubular film, the film guide pipes in the two supporting units gradually flatten the tubular film, and when the film passes through the two squeezing rollers, the two squeezing rollers squeeze the film into a film containing two films.
The film guide pipe flattens the tubular film, meanwhile, the film is in contact with the film guide pipe, and water flowing through the film guide pipe cools the film to avoid the film from being folded; the film drives the film guide pipe to rotate when contacting with the film guide pipe, namely, the first pipe body is driven to rotate, the spiral piece on the inner side wall of the first pipe body accelerates the water flow speed, so that the plugging plate is impacted, the plugging of the second pipe body by the plugging plate is further relieved, and the water flowing through the first pipe body flows out through the second pipe body.
When the material extruding of the spiral extruding mechanism is uneven or raw materials are insufficient in a certain time period in the film blowing process of the film blowing machine, the thickness of the film can be thinned, the film is not in contact with the film guide pipe any more, the film guide pipe is in a static state in the process, the spiral piece cannot accelerate water flow to impact the plugging plate, the second pipe body is plugged by the plugging plate, water flowing through the first pipe body enters the cylinder body through the diversion hole and the connecting pipe, the push rod and the push frame are driven to move, the extrusion rollers are further driven to move to enable the two extrusion rollers to be close, air blown out by the film blowing machine is blocked, air is prevented from entering the space between the two films to generate bubbles when the thinned film passes through the two extrusion rollers, and the production quality of the film is improved.
When the material is even or the raw materials are sufficient, when the film thickness is normal, the film guide pipe can continue to rotate, water flowing through the first pipe body flows out through the second pipe body, water in the barrel and the connecting pipe also flows out from the second pipe body, negative pressure is generated in the barrel during the water flowing out process in the barrel, the push rod and the push frame are driven to move in the reverse direction, so that the extrusion rollers are driven to move, the distance between the two extrusion rollers is matched with the normal thickness of the film, and the situation that the film is stretched and broken due to the fact that the two extrusion rollers clamp the film too tightly can not occur.
Furthermore, the number of the moving and pushing mechanism is one, the number of the lantern rings included by the moving and pushing mechanism is two, and the two lantern rings are respectively fixed on one supporting strip in the two supporting units. The technical effect of the scheme is as follows: through setting up a removal and push away the mechanism, only need carry out position control to one of them squeeze roll, be favorable to improving the stability of film traction direction one side squeeze roll.
Further, the diameter of the plugging block is smaller than the outer diameter of the second pipe body. The technical effect of the scheme is as follows: the second pipe body is convenient to be connected with a water outlet pipe to discharge water in the second pipe body.
Further, the width of the gap is larger than the diameter of the shunting hole. The technical effect of the scheme is as follows: the flow velocity of the water at the gap is accelerated when the water enters the diversion holes, which is beneficial to improving the impact force of the water.
Furthermore, a limiting rod for limiting the moving and pushing frame is fixed on the bearing frame. The technical effect of the scheme is as follows: is beneficial to improving the stability of the squeeze roll.
Further, the connecting pipe is a transparent pipe. The technical effect of the scheme is as follows: the water quantity in the connecting pipe can be observed conveniently.
Furthermore, a sealing ring is arranged on the moving push rod. The technical effect of the scheme is as follows: the sealing performance is improved, and the pushing rod is ensured to move smoothly.
Drawings
FIG. 1 is a three-dimensional schematic of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the connection location of the support bar, collar, first tube and second tube.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a bearing frame 1, a squeezing roller 2, a moving and pushing frame 3, a moving and pushing rod 4, a cylinder 5, a connecting pipe 6, a lantern ring 7, a supporting strip 8, a first pipe body 9, a second pipe body 10, a gap 11, a shunting hole 12, a groove 13, a blocking plate 14 and a limiting rod 15.
Example (b):
the embodiment is basically as shown in the attached figures 1 and 2: the press roll mechanism for blown film shown in fig. 1 comprises a frame, a bearing frame 1, a supporting mechanism, two extrusion rolls 2 and at least one moving and pushing mechanism, wherein the bearing frame 1 is welded with the frame; the number of the moving and pushing mechanisms is one or two, and when the number of the moving and pushing mechanisms is two, the moving and pushing mechanisms are respectively positioned at the left side and the right side of the bearing frame 1; in this embodiment, the number of the moving and pushing mechanism is one, the moving and pushing mechanism is located on the right side of the bearing frame 1, the moving and pushing mechanism comprises a moving and pushing frame 3, a moving and pushing rod 4, a cylinder 5, a connecting pipe 6 and two lantern rings 7, and the cylinder 5 is welded on the bearing frame 1.
Bear 1 and go up to open and have rotation hole and bar groove, left squeeze roll 2 rotates and sets up in the rotation hole, and squeeze roll 2 on right side rotates and sets up in the bar groove.
The supporting mechanism comprises two supporting units which are arranged obliquely relative to each other, and each supporting unit comprises two supporting bars 8 and a plurality of membrane guide pipes (downward extending parts of the supporting bars 8 and the rest membrane guide pipes are omitted in fig. 1). At least one membrane guiding pipe in each supporting unit comprises a first pipe body 9 and a second pipe body 10 as shown in fig. 2, only the uppermost membrane guiding pipe in the embodiment comprises the first pipe body 9 and the second pipe body 10, the first pipe body 9 is rotatably arranged on two supporting strips 8 in the same supporting unit through a bearing, and the first pipe body 9 comprises a water inlet end at the left end and a water outlet end at the right end.
Two lantern rings 7 weld respectively on a support bar 8 in two support units, the lateral wall of lantern ring 7 is opened there is reposition of redundant personnel hole 12, barrel 5 passes through connecting pipe 6 and reposition of redundant personnel hole 12 intercommunication, the one end that moves push rod 4 slides and sets up in barrel 5, it has the sealing washer to move push rod 4 bonding, the other end that moves push rod 4 with move and push away frame 3 welding, squeeze roll 2 on right side in figure 1 with move push rod 4 and rotate and be connected, the middle part horizontal welding that moves and push away frame 3 has reset spring, reset spring's the other end and bear 1 welding, it resets to be convenient for right after moving to push away frame 3 and remove left.
As shown in fig. 2, the left end of the second pipe 10 is welded in the collar 7, a gap 11 is formed between the second pipe 10 and the first pipe 9, the gap 11 is located at the diversion hole 12, and the width of the gap 11 is greater than the diameter of the diversion hole 12; the right end face of the second pipe body 10 is provided with a groove 13, the bottom of the annular groove is welded with a tension spring, the free end of the tension spring is welded with a plugging plate 14, and the diameter of the plugging block is smaller than the outer diameter of the second pipe body 10.
As shown in fig. 1, a limiting rod 15 for limiting the moving and pushing frame 3 is welded on the bearing frame 1. In addition, the connecting pipe 6 is a transparent pipe, the length of the first pipe body 9 is larger than the width of the film, a fluorescent powder layer is coated on the outer side wall of one end of the first pipe body 9, the fluorescent powder layer is convenient for manually observing whether the first pipe body 9 rotates or not, a fluorescence detector and a controller can be installed on the rack, if the first pipe body 9 does not rotate, and when the fluorescent powder layer cannot be detected by the fluorescence detector within a period of time, the fluorescence detector transmits signals to the controller to realize alarming, and a worker is reminded to adjust the distance between the two extrusion rollers 2.
Four sleeves (not shown in the figure) are further fixed on the rack through bolts, water inlet pipes are fixedly connected to two sleeves, water outlet pipes are fixedly connected to the other two sleeves, the water inlet end of the first pipe body 9 is rotatably connected with the sleeves in the figure 2, and the right end of the second pipe body 10 is rotatably connected with the other sleeve.
The specific implementation process is as follows:
after the film blowing machine blows the tubular film, the first pipe 9 in the two supporting units in fig. 1 gradually flattens the tubular film, and when the film moves leftwards through the two squeeze rollers 2, the two squeeze rollers 2 squeeze the film into a film containing two films.
The first tube 9 flattens the tubular film, meanwhile, the film is in contact with the first tube 9, and water flowing through the first tube 9 cools the film to avoid the film from wrinkling; the film drives first body 9 to rotate when contacting with first body 9, and the flight on the 9 inside walls of first body accelerates the velocity of water flow to strike plugging plate 14, and then remove the shutoff of plugging plate 14 to second body 10, the water that flows through first body 9 flows out through second body 10.
When the material is inhomogeneous or the raw materials is insufficient to appear crowded material when the in-process certain time quantum spiral extrusion mechanism of inflation film manufacturing machine at the blown film, the thickness of film can the attenuation, the film no longer contacts with first body 9, first body 9 is in quiescent condition in this process, because the flight can't accelerate rivers impact shutoff board 14, second body 10 is by shutoff board 14 shutoff, the water of first body 9 of flowing through gets into in barrel 5 behind diffluence hole 12 and connecting pipe 6, thereby drive and move push rod 4 and pass the frame and remove, and then promote squeeze roll 2 and remove and make two squeeze roll 2 draw close together, the air that blows out the inflation film manufacturing machine carries out the separation, the time air gets into between two rete and produce the bubble when avoiding the film after the attenuation to pass through two squeeze roll 2, be favorable to improving the production quality of film.
When the material is even or the raw materials are sufficient, the first pipe body 9 can continue to rotate when the film thickness is normal, the water flowing through the first pipe body 9 flows out through the second pipe body 10, the water in the cylinder body 5 and the connecting pipe 6 also flows out from the second pipe body 10, negative pressure is generated in the cylinder body 5 in the process that the water in the cylinder body 5 flows out, the push rod 4 and the push frame are driven to move in the reverse direction, the extrusion rollers 2 are driven to move, the distance between the two extrusion rollers 2 is matched with the normal thickness of the film, and the situation that the film is stretched and broken due to the fact that the film is clamped tightly by the two extrusion rollers 2 can be avoided.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (7)
1. A film pressing mechanism for co-extrusion blowing machine which characterized in that: the extrusion device comprises a bearing frame, a supporting mechanism, two extrusion rollers and at least one moving and pushing mechanism, wherein the extrusion rollers are rotatably arranged on the bearing frame; the supporting mechanism comprises two supporting units which are arranged in a relatively inclined mode, each supporting unit comprises two supporting strips and a plurality of film guide pipes, at least one film guide pipe in each supporting unit comprises a first pipe body and a second pipe body, the first pipe body is rotatably arranged on the two supporting strips, and spiral pieces are arranged on the inner side wall of the first pipe body;
the moving and pushing mechanism comprises a moving and pushing frame, a moving and pushing rod, a cylinder body, a connecting pipe and at least one lantern ring, the lantern ring is fixedly arranged on the supporting bar, the side wall of the lantern ring is provided with a shunting hole, the cylinder body is communicated with the shunting hole through the connecting pipe, the moving and pushing rod is slidably arranged in the cylinder body and is fixedly connected with the moving and pushing frame, and the moving and pushing frame can push the extrusion roller to move;
one end of the second pipe body is fixedly arranged in the sleeve ring, a gap is formed between the second pipe body and the first pipe body and is located at the position of the flow dividing hole, a groove is formed in the end face of the other end of the second pipe body, a tension spring is connected in the annular groove, and the free end of the tension spring is connected with a plugging plate.
2. A lamination mechanism for a co-extrusion blow molding machine according to claim 1, wherein: the number of the moving and pushing mechanisms is one, the number of the lantern rings included by the moving and pushing mechanisms is two, and the two lantern rings are respectively fixed on one supporting strip in the two supporting units.
3. A lamination mechanism for a co-extrusion blow molding machine according to claim 2, wherein: the diameter of the plugging block is smaller than the outer diameter of the second pipe body.
4. A lamination mechanism for a co-extrusion blow molding machine according to claim 3, wherein: the width of the gap is larger than the diameter of the shunting hole.
5. A film laminating mechanism for a co-extrusion blow molding machine according to claim 4, wherein: the bearing frame is fixed with a limiting rod for limiting the moving and pushing frame.
6. A film laminating mechanism for a co-extrusion blow molding machine according to claim 5, wherein: the connecting pipe is a transparent pipe.
7. A lamination mechanism for a co-extrusion blow molding machine according to claim 6, wherein: the moving push rod is provided with a sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011552141.6A CN112873818B (en) | 2020-12-24 | 2020-12-24 | Film pressing mechanism for co-extrusion blow molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011552141.6A CN112873818B (en) | 2020-12-24 | 2020-12-24 | Film pressing mechanism for co-extrusion blow molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112873818A true CN112873818A (en) | 2021-06-01 |
| CN112873818B CN112873818B (en) | 2022-11-22 |
Family
ID=76043490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011552141.6A Active CN112873818B (en) | 2020-12-24 | 2020-12-24 | Film pressing mechanism for co-extrusion blow molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112873818B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2468585A (en) * | 1945-02-15 | 1949-04-26 | Saint Gobain | Process for producing pellicles |
| ES290655A1 (en) * | 1962-07-26 | 1964-02-16 | P A I C P M Ind Chimiche Porto | Improved apparatus for producing tubular films |
| CA2071422A1 (en) * | 1991-09-06 | 1993-03-07 | Jack N. Shirrell | Method for making prestretched film |
| DE4303952A1 (en) * | 1992-12-18 | 1994-06-23 | Windmoeller & Hoelscher | Flat lay and take-off device for a plastic tubular film web produced by the blowing process |
| JP2008284875A (en) * | 2008-03-14 | 2008-11-27 | Cte Co Ltd | Manufacturing method for thermoplastic synthetic resin sheet or film, and apparatus therefor |
| EP3069845A1 (en) * | 2015-03-17 | 2016-09-21 | Nordson Corporation | Extrusion die tension adjuster and method of using same |
| WO2016198439A1 (en) * | 2015-06-08 | 2016-12-15 | Windmöller & Hölscher Kg | Calibrating device and method for calibrating a film tube |
| CN108215141A (en) * | 2017-12-21 | 2018-06-29 | 苏州星火丰盈环保包装有限公司 | A kind of haulage gear of inflation film manufacturing machine |
| IT201700055831A1 (en) * | 2017-05-23 | 2018-11-23 | Syncro S R L | DEVICE AND METHOD TO ADJUST THE THICKNESS PROFILE IN BLOWN FILM PRODUCTION |
| CN208499888U (en) * | 2018-04-23 | 2019-02-15 | 广东科达洁能股份有限公司 | A kind of more film rolls connect film laminator automatically |
| CN208946716U (en) * | 2018-11-12 | 2019-06-07 | 连云港森富新材料科技有限公司 | A kind of film shaping device |
| CN210501408U (en) * | 2019-08-05 | 2020-05-12 | 无锡市振飞新型包装材料有限公司 | Film pressing mechanism of film blowing machine |
| CN211812531U (en) * | 2019-12-25 | 2020-10-30 | 绍兴绿斯达新材料有限公司 | Automatic adjusting winding mechanism of film blowing machine |
| CN112092347A (en) * | 2020-09-10 | 2020-12-18 | 超然塑胶包装制品（深圳）有限公司 | Multi-gun barrel film blowing machine |
-
2020
- 2020-12-24 CN CN202011552141.6A patent/CN112873818B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2468585A (en) * | 1945-02-15 | 1949-04-26 | Saint Gobain | Process for producing pellicles |
| ES290655A1 (en) * | 1962-07-26 | 1964-02-16 | P A I C P M Ind Chimiche Porto | Improved apparatus for producing tubular films |
| CA2071422A1 (en) * | 1991-09-06 | 1993-03-07 | Jack N. Shirrell | Method for making prestretched film |
| DE4303952A1 (en) * | 1992-12-18 | 1994-06-23 | Windmoeller & Hoelscher | Flat lay and take-off device for a plastic tubular film web produced by the blowing process |
| JP2008284875A (en) * | 2008-03-14 | 2008-11-27 | Cte Co Ltd | Manufacturing method for thermoplastic synthetic resin sheet or film, and apparatus therefor |
| EP3069845A1 (en) * | 2015-03-17 | 2016-09-21 | Nordson Corporation | Extrusion die tension adjuster and method of using same |
| WO2016198439A1 (en) * | 2015-06-08 | 2016-12-15 | Windmöller & Hölscher Kg | Calibrating device and method for calibrating a film tube |
| IT201700055831A1 (en) * | 2017-05-23 | 2018-11-23 | Syncro S R L | DEVICE AND METHOD TO ADJUST THE THICKNESS PROFILE IN BLOWN FILM PRODUCTION |
| CN108215141A (en) * | 2017-12-21 | 2018-06-29 | 苏州星火丰盈环保包装有限公司 | A kind of haulage gear of inflation film manufacturing machine |
| CN208499888U (en) * | 2018-04-23 | 2019-02-15 | 广东科达洁能股份有限公司 | A kind of more film rolls connect film laminator automatically |
| CN208946716U (en) * | 2018-11-12 | 2019-06-07 | 连云港森富新材料科技有限公司 | A kind of film shaping device |
| CN210501408U (en) * | 2019-08-05 | 2020-05-12 | 无锡市振飞新型包装材料有限公司 | Film pressing mechanism of film blowing machine |
| CN211812531U (en) * | 2019-12-25 | 2020-10-30 | 绍兴绿斯达新材料有限公司 | Automatic adjusting winding mechanism of film blowing machine |
| CN112092347A (en) * | 2020-09-10 | 2020-12-18 | 超然塑胶包装制品（深圳）有限公司 | Multi-gun barrel film blowing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112873818B (en) | 2022-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5248366A (en) | Method for helical cutting of a flexible tubular sheet of polymeric material | |
| JP3451437B2 (en) | Web support device | |
| US20160273993A1 (en) | Method and system for detection of blowout in pipes/tubes | |
| US4022558A (en) | Apparatus for the extrusion of tubular thermo-plastic film | |
| CN112873818B (en) | Film pressing mechanism for co-extrusion blow molding machine | |
| US5361469A (en) | Apparatus for helical cutting of a flexible tubular sheet of polymeric material | |
| CN112793141B (en) | Compression roller mechanism for blown film | |
| TW200528262A (en) | Method of inflation extrusion molding, extrusion molding apparatus therefor, and process for producing pressure-sensitive adhesive sheet | |
| US3802826A (en) | Rotatable co-extrusion die | |
| CN105966041A (en) | {0><}0{>Laser positioning and windowing laminating technology | |
| CN113580524A (en) | Processing equipment and preparation method of high-barrier multilayer co-extruded film | |
| CN112873817B (en) | Film cooling forming device for film blowing machine | |
| CN107381158B (en) | Raw and other materials's switching mechanism | |
| CN105082542A (en) | 3D printing device and extrusion machine thereof | |
| CN104386531A (en) | Circular hose packaging machine | |
| CN116373319A (en) | Edge protection device and edge protection method for optical film | |
| CN210501406U (en) | Film blowing machine | |
| US8092204B2 (en) | Apparatus and method for inflation extrusion molding of pressure-sensitive adhesive sheet | |
| CN210501411U (en) | Film blowing machine is with propping up cutting device | |
| CN213860583U (en) | TPU film production line | |
| CN111136886A (en) | Film extrusion speed control device for plastic extrusion wire drawing machine | |
| CN207808632U (en) | A kind of complete biodegradable refuse bag blown film device | |
| CN112456206A (en) | Automatic constant-tension four-station film winding device with deviation rectification function | |
| CN206311518U (en) | A kind of polaroid detection device for foreign matter | |
| CN108058436A (en) | A kind of complete biodegradable refuse bag blown film device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |