CN212633221U - Coating mechanism of PVDC coating film making machine - Google Patents
Coating mechanism of PVDC coating film making machine Download PDFInfo
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- CN212633221U CN212633221U CN202020399945.6U CN202020399945U CN212633221U CN 212633221 U CN212633221 U CN 212633221U CN 202020399945 U CN202020399945 U CN 202020399945U CN 212633221 U CN212633221 U CN 212633221U
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Abstract
The utility model provides a coating mechanism of PVDC coating film system membrane machine, including storage case, inlet pipe, discharging pipe, first coating roller, second coating roller, scribble the pond, be equipped with PVDC coating in scribbling the pond, inlet pipe, discharging pipe are connected the storage case with scribble the pond, be equipped with heating device in the storage case, around being equipped with the base film on first coating roller and the second coating roller, first coating roller is whole or partial submergence is in scribbling the PVDC coating in the pond. The utility model discloses a coating mechanism of PVDC coating film system membrane machine has guaranteed when PVDC latex coating latex state, has sufficient energy supply so that moisture at the uniform velocity volatilizees to and guarantee not excessively dry the emergence, in case the moisture boiling appears the bottom steam and pierces through and produce the coating and be full of cracks after coating pinhole or surface skinning.
Description
Technical Field
The utility model relates to a PVDC production technology especially relates to a coating mechanism of PVDC coating film system membrane machine.
Background
The coating film is also called PVDC coating film, short K film, namely KOP (containing extinction KOP), KPET, KPA, KCPP, KCPE and other coating films. The K film is a film with high barrier performance obtained by coating one or more layers of polyvinylidene chloride (PVDC) latex on various film materials by using special equipment. The excellent barrier property of the paint mainly shows that the oxygen permeability can be reduced by hundreds of times, so that the quality guarantee period, the aroma retention property, the freshness preservation property, the oil resistance and the like are greatly improved. And has the same printing performance and composite performance as common films, and can also have double-sided heat sealing performance (the heat sealing strength is more than or equal to 0.8N/15 mm) according to requirements.
The barrier capability of the coating film is directly related to the thickness of the coating layer and is further related to the film forming process of the coating layer and the process control of the coating layer. For example, the film formation process of the PVDC latex coating is latex state (state 1) → dry (state 2) → deformed and thin-filmed state (state 3). State 1 to State 2 must ensure a sufficiently high "body temperature" of the coating; ensuring sufficient energy supply to enable the moisture to volatilize at a constant speed; ensuring that excessive drying does not occur, and preventing the coating from generating coating cracks due to the penetration of bottom layer water vapor after the water boils and coating pinholes or surface crusting appear.
Disclosure of Invention
The utility model provides a coating mechanism of a PVDC coating film making machine, which ensures that when the PVDC latex is coated with latex, sufficient energy is supplied to enable moisture to volatilize at a constant speed; ensuring that excessive drying does not occur, and preventing the coating from generating coating cracks due to the penetration of bottom layer water vapor after the water boils and coating pinholes or surface crusting appear.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the coating mechanism comprises a storage tank, a feeding pipe, a discharging pipe, a first coating roller, a second coating roller and a coating pool, wherein PVDC coating is arranged in the coating pool, the feeding pipe and the discharging pipe are connected with the storage tank and the coating pool, a heating device is arranged in the storage tank, a base film is wound on the first coating roller and the second coating roller, and the first coating roller is completely or partially immersed in the PVDC coating in the coating pool.
Further, the coating mechanism further comprises a temperature controller and a temperature detector for detecting the PVDC coating in the coating pool, wherein the temperature detector is arranged in the coating pool, the temperature detector is connected with the temperature controller, and the temperature controller is connected with the heating device.
Furthermore, a feed inlet is formed in the coating pool, and the feed inlet is formed in the bottom of the coating pool.
Further, a discharge port is arranged on the coating pool and is arranged at a position close to the liquid level of the PVDC coating.
Further, coating mechanism still includes charge pump, discharge pump, liquid level detector and pump speed controller, the charge pump sets up on the inlet pipe, the discharge pump sets up on the discharging pipe, the liquid level detector sets up in the coating pond, the liquid level detector with the pump speed controller is connected, pump speed controller with charge pump, discharge pump are connected.
Furthermore, a filter is further arranged on the discharge pipe and is arranged at the front end of the discharge pump.
After the technical scheme is adopted, the utility model has the advantages of as follows:
(1) the first coating roller and the second coating roller of the coating mechanism of the PVDC coating film making machine rotate to enable the base film to be uniformly coated with the PVDC coating; the PVDC coating is heated in the storage box, so that the PVDC coating entering the coating pool can have enough temperature, and sufficient energy supply is ensured to enable the moisture to volatilize at a constant speed; secondly, as the PVDC coating enters the coating pool from the feeding pipe, the temperature is reduced, and the coating can be prevented from generating coating cracks due to the fact that moisture boils to generate coating pinholes or the water vapor of the bottom layer penetrates after the surface crusts.
(2) The temperature detector in the coating pool is used for detecting the temperature of the PVDC coating, when the temperature detector detects that the temperature of the PVDC coating is too high, a signal is transmitted to the temperature controller, and the temperature controller controls the heating device in the storage box to increase the heating temperature; when the thermodetector detects that PVDC coating temperature is too low, give temperature controller with signal transmission, heating device in the temperature controller control storage case reduces heating temperature to when guaranteeing PVDC latex coating latex state simultaneously, have sufficient energy supply so that moisture at the uniform velocity volatilizees, and guarantee not excessively dry the emergence, prevent that the coating pinhole appears in the moisture boiling or the bottom layer steam penetrates and produces the coating and split after the surface skinning.
(3) The feed inlet sets up in the bottom of scribbling the paint pool, and the discharge gate setting is being close to PVDC coating liquid level department, its aim at: the temperature at the feed inlet is high, the feed inlet is arranged at the bottom of the coating pool, so that the PVDC coating can be prevented from being excessively dried, and coating pinholes can be prevented from being generated due to boiling of water, or coating cracks can be prevented from being generated due to penetration of water vapor at the bottom layer after surface skinning; the discharge gate sets up in being close to PVDC coating liquid level department, can discharge the dust and other impurity that float on PVDC coating liquid level from the discharge gate fast, guarantees PVDC coating quality in the coating pond.
(4) The liquid level detector detects the liquid level height of the PVDC coating in the coating pool, and feeds a liquid level signal back to the pump speed controller, and the pump speed controller controls the flow rate of the PVDC coating by controlling the feeding pump and the discharging pump, so that the effect of stabilizing the liquid level height of the PVDC coating is achieved, and the PVDC coating is uniformly coated.
(5) The discharging pipe is provided with a filter, and the filter is used for filtering impurities in the flowing PVDC coating, so that the purity of the PVDC coating in the storage box and the purity of the PVDC coating entering the coating pool are guaranteed.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is a schematic structural diagram of a coating mechanism of a PVDC coating film making machine of the present invention;
the names of the components marked in the figures are as follows:
1. a material storage box; 2. a feed pipe; 3. a discharge pipe; 4. a first coating roller; 5. a limiting clamping groove; 6. a coating pool; 61. a feed inlet; 62. a discharge port; 7. a heating device; 8. a base film; 9. a temperature controller; 10. a temperature detector; 11. a feed pump; 12. a discharge pump; 13. a liquid level detector; 14. a pump speed controller; 15. and (3) a filter.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a coating mechanism of a PVDC coating film making machine includes a storage tank 1, a feed pipe 2, a discharge pipe 3, a first coating roller 4, a second coating roller 5, and a coating pond 6. The coating pond 6 is internally provided with PVDC coating, the feed pipe 2 and the discharge pipe 3 are connected with the storage tank 1 and the coating pond 6, the storage tank 1 is internally provided with a heating device 7, the first coating roller 4 and the second coating roller 5 are wound with a base film 8, and the first coating roller 4 is totally or partially immersed in the PVDC coating in the coating pond 6.
The coating material tank 6 is provided with a feed port 61 and a discharge port 62, the feed port 61 is arranged at the bottom of the coating material tank 6, and the discharge port 62 is arranged near the PVDC coating material liquid level. The temperature of the feed inlet 61 is high, and the feed inlet 61 is arranged at the bottom of the coating pool 6, so that the PVDC coating can be prevented from being excessively dried, and coating pinholes can be prevented from being generated due to boiling of water, or coating cracks can be prevented from being generated due to penetration of water vapor of a bottom layer after surface skinning; the discharge port 62 is arranged close to the liquid level of the PVDC paint, so that dust and other impurities floating on the liquid level of the PVDC paint can be quickly discharged from the discharge port 62, and the quality of the PVDC paint in the paint pool 6 is ensured.
A temperature detector 10 is arranged in the coating pool 6, the temperature detector 10 is connected with a temperature controller 9, and the temperature controller 9 is connected with the heating device 7. The temperature detector 10 in the coating pool 6 is used for detecting the temperature of the PVDC coating, when the temperature detector 10 detects that the temperature of the PVDC coating is too high, a signal is transmitted to the temperature controller 9, and the temperature controller 9 controls the heating device 7 in the storage box 1 to increase the heating temperature; when the temperature detector 10 detects that the PVDC coating temperature is too low, the signal is transmitted to the temperature controller 9, the heating device 7 in the material storage box 1 is controlled by the temperature controller 9 to reduce the heating temperature, so that when the PVDC latex is coated in a latex state, sufficient energy is supplied to enable moisture to volatilize at a constant speed, excessive drying is avoided, and coating pinholes are prevented from being generated due to moisture boiling or coating cracks are generated due to the penetration of bottom layer water vapor after surface skinning.
The feeding pipe 2 is provided with a feeding pump 11, the discharging pipe 3 is provided with a discharging pump 12, a liquid level detector 13 is arranged in the coating pool 6, the liquid level detector 13 is connected with a pump speed controller 14, and the pump speed controller 14 is connected with the feeding pump 11 and the discharging pump 12. The liquid level detector 13 detects the liquid level height of the PVDC coating in the coating pool 6 and feeds a liquid level signal back to the pump speed controller 14, and the pump speed controller 4 controls the flow rate of the PVDC coating by controlling the feeding pump 11 and the discharging pump 12 to achieve the effect of stabilizing the liquid level height of the PVDC coating, so that the PVDC coating is uniformly coated.
The discharging pipe 3 is also provided with a filter 15, and the filter 15 is arranged at the front end of the discharging pump 12. The filter 15 is used for filtering impurities in the flowing PVDC coating, and ensuring the purity of the PVDC coating in the storage tank 1 and the PVDC coating entering the coating pond 6.
The utility model discloses a coating mechanism of PVDC coating film system membrane machine has following technological effect:
(1) the first coating roller and the second coating roller rotate to enable the base film to be uniformly coated with PVDC coating;
(2) the PVDC paint entering the paint pool can have enough temperature, and enough energy supply is ensured to enable the moisture to volatilize at a constant speed;
(3) the occurrence of excessive drying is ensured, and coating pinholes caused by water boiling or coating cracks caused by water vapor penetration of the bottom layer after surface skinning can be prevented.
In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, 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, which should fall within the scope of the present invention defined by the appended claims.
Claims (6)
1. The coating mechanism of the PVDC coating film making machine is characterized by comprising a storage box (1), a feeding pipe (2), a discharging pipe (3), a first coating roller (4), a second coating roller (5) and a coating pond (6), wherein PVDC coatings are arranged in the coating pond (6), the feeding pipe (2) and the discharging pipe (3) are connected with the storage box (1) and the coating pond (6), a heating device (7) is arranged in the storage box (1), a base film (8) is wound on the first coating roller (4) and the second coating roller (5), and the first coating roller (4) is completely or partially immersed in the PVDC coatings in the coating pond (6).
2. The coating mechanism of the PVDC coating film making machine according to the claim 1, characterized in that, the coating mechanism further comprises a temperature controller (9) and a temperature detector (10) for detecting the PVDC coating in the coating pool (6), the temperature detector (10) is arranged in the coating pool (6), the temperature detector (10) is connected with the temperature controller (9), and the temperature controller (9) is connected with the heating device (7).
3. The coating material coating mechanism of the PVDC coating film making machine according to the claim 1, characterized in that the coating material pool (6) is provided with a feed inlet (61), and the feed inlet (61) is arranged at the bottom of the coating material pool (6).
4. The coating material applying mechanism of the PVDC coating film making machine according to the claim 1, characterized in that the coating material pool (6) is provided with a discharge port (62), and the discharge port (62) is arranged near the PVDC coating material liquid level.
5. The paint coating mechanism of PVDC coated film making machine according to any one of claims 1 to 4, characterized in that said paint coating mechanism further comprises a feed pump (11), a discharge pump (12), a liquid level detector (13) and a pump speed controller (14), said feed pump (11) is disposed on said feed pipe (2), said discharge pump (12) is disposed on said discharge pipe (3), said liquid level detector (13) is disposed in said paint pool (6), said liquid level detector (13) is connected with said pump speed controller (14), said pump speed controller (14) is connected with said feed pump (11) and discharge pump (12).
6. The paint coating mechanism of PVDC coated film making machine according to claim 5, characterized in that said discharge pipe (3) is further provided with a filter (15), said filter (15) is arranged at the front end of said discharge pump (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020399945.6U CN212633221U (en) | 2020-03-25 | 2020-03-25 | Coating mechanism of PVDC coating film making machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020399945.6U CN212633221U (en) | 2020-03-25 | 2020-03-25 | Coating mechanism of PVDC coating film making machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113134460A (en) * | 2021-04-15 | 2021-07-20 | 杭州塑料工业有限公司 | PVDC emulsion feeding device based on PVDC coating process |
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2020
- 2020-03-25 CN CN202020399945.6U patent/CN212633221U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113134460A (en) * | 2021-04-15 | 2021-07-20 | 杭州塑料工业有限公司 | PVDC emulsion feeding device based on PVDC coating process |
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