CN114633498A - Film surface treatment process and device - Google Patents
Film surface treatment process and device Download PDFInfo
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- CN114633498A CN114633498A CN202210537170.8A CN202210537170A CN114633498A CN 114633498 A CN114633498 A CN 114633498A CN 202210537170 A CN202210537170 A CN 202210537170A CN 114633498 A CN114633498 A CN 114633498A
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- friction roller
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- 238000004381 surface treatment Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000008569 process Effects 0.000 title claims abstract description 29
- 239000012528 membrane Substances 0.000 claims abstract description 25
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- 238000000576 coating method Methods 0.000 claims abstract description 14
- 239000002344 surface layer Substances 0.000 claims abstract description 14
- 238000007581 slurry coating method Methods 0.000 claims abstract description 11
- 239000000428 dust Substances 0.000 claims description 44
- 230000007246 mechanism Effects 0.000 claims description 35
- 239000004744 fabric Substances 0.000 claims description 30
- 239000002245 particle Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 13
- 239000000853 adhesive Substances 0.000 abstract description 9
- 239000010410 layer Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 238000007517 polishing process Methods 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 172
- 239000000126 substance Substances 0.000 description 14
- 239000003292 glue Substances 0.000 description 13
- 239000003795 chemical substances by application Substances 0.000 description 9
- 238000004513 sizing Methods 0.000 description 9
- 239000010409 thin film Substances 0.000 description 9
- 238000003851 corona treatment Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- 238000005381 potential energy Methods 0.000 description 5
- 230000003746 surface roughness Effects 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000002985 plastic film Substances 0.000 description 4
- 229920006255 plastic film Polymers 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- 239000006255 coating slurry Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
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- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
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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
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/0009—After-treatment of articles without altering their shape; Apparatus therefor using liquids, e.g. solvents, swelling agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
-
- 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
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/002—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
-
- 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
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C2059/027—Grinding; Polishing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to the technical field of surface treatment, in particular to a film surface treatment process and a device, which comprises the following steps: s1, performing a polishing process on the surface of the film through a friction roller to form a new surface layer with a larger area on the surface of the film and increase the surface energy of the surface of the film; and S2, performing a slurry coating process on the surface of the membrane. The invention rubs the surface of the film by the friction roller, and can improve the consistency of the surface energy of the film surface and the roughness of the film surface, thereby improving the adhesive force between the film and the slurry molecules, and improving the coating effect of the slurry and the composite adhesive property of the film and other film layers.
Description
Technical Field
The invention relates to the technical field of surface treatment, in particular to a film surface treatment process and a film surface treatment device.
Background
At present, after a thin film is processed, slurry coating is usually required to be performed on the surface of the thin film so as to facilitate the compounding of the thin film and other film materials or the attachment of the thin film on other objects, but the problems that the thin film and the slurry are easy to fall off due to the low surface energy of the surface of the thin film and the poor molecular adhesion between the surface of the thin film and the slurry exist, and the coating of the slurry, the subsequent compounding of the thin film and the attachment of the thin film on other objects are affected.
A common method for increasing the surface energy of the membrane surface is to use corona treatment, which is generally carried out in air, and under the impact standard of high-voltage and high-frequency spark discharge, on the one hand, weak electrolytes are generated in the gas, and various polar functional groups are generated; on the other hand, the double chains in the polyene formula, particularly on the carbon bonds, are more readily opened. In that way, at the moment of solution, various polar functional groups undergo grafting reactions with the polymer surface, thereby changing the polyolefin surface from a non-polar to a polar surface. The polyolefin surface after arc discharge generates a plurality of polar chemical substances which are completely different from the original polyolefin structure, and the surface free energy is further improved.
However, corona treatment also has the following disadvantages:
1. corona treatment has requirements on air humidity and film surface temperature, and the longer the corona treatment time is required as the air relative humidity and film surface temperature increase, i.e., the less easily the film is corona treated. As the temperature of the film surface increases, the stability of electret molecules deteriorates, the proportion of surface molecule migration increases, and the formation of a high surface energy region on the film surface is not facilitated.
2. For products with high surface energy requirements, the corona strength and the corona time need to be increased. This affects the production efficiency and also affects the characteristics of the product, causing embrittlement and even degradation.
3. When corona treatment is carried out, the final surface energy of the film surface is inconsistent due to uneven gaps between the film surface and the electrodes, uneven film surface, crumpling and the like, and the subsequent coating and gluing amount is uneven.
4. In the corona treatment process, because high voltage is applied between the two poles, generated electrons collide and activate molecules in air between the two poles, substances such as ozone, nitric oxide and the like are generated, and the environment is polluted.
5. The corona treatment not only changes the surface dyne value of the film surface, but also has influence on other physical properties of the film, mainly including reduction of friction coefficient, reduction of shrinkage rate and reduction of heat seal strength.
Disclosure of Invention
The present invention is directed to solving one of the above problems.
In order to solve one of the technical problems, the invention provides a film surface treatment process and a film surface treatment device, wherein the film surface is rubbed by a rubbing roller, so that the consistency of the surface energy of the film surface and the roughness of the film surface can be improved, the adhesive force between the film and slurry molecules is improved, and the coating effect of the slurry and the composite adhesive property between the film and other film layers are improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: provided is a film surface treatment process, comprising the following steps:
s1, performing a polishing process on the surface of the film through a friction roller to form a new surface layer with a larger area on the surface of the film and increase the surface energy of the surface of the film;
and S2, performing a slurry coating process on the surface of the membrane.
The film surface treatment process rubs the film surface through the rubbing roll, because in the solid physical theory, surface atoms have more energy than atoms in the substance, according to the principle of lowest energy, the atoms spontaneously tend to the substance rather than the surface, a new surface S1 is formed by rubbing the film surface, partial film surface is damaged by rubbing the film surface, the bond energy of the surface layer atoms towards the outside is not compensated, the atoms of the surface layer are easily promoted to seek compensation (chemical bonds between molecules) towards the inside of the surface layer, and thus the surface particles have extra potential energy than the particles in the body, namely the surface energy of the film surface polished by the rubbing roll is increased,
in addition, as the roughness of the film surface increases after rubbing, a new larger surface layer S1 is generated on the film surface, and the new larger surface layer S1 can further expand the surface energy. Therefore, when the film surface is coated with the sizing agent, the film surface has stronger adhesive force to molecules of the glue, the sizing agent is not easy to fall off from the film surface, the bonding property of the sizing agent and the film surface is stronger, the film is favorably compounded with other film layers, and the film is also favorably attached to other objects.
Further, after the polishing of the film surface in the step S1, the slurry coating process of the film surface in the step S2 is performed within 0-10 min. Because the potential energy of the newly created surface layer is unstable, and the surface energy is gradually reduced through surface atom recombination and mutual reaction or adsorption to other surrounding molecules or atoms along with the increase of time, the slurry coating needs to be carried out before the surface energy of the membrane is reduced, and the slurry (glue) is coated in 0-10min, so that the adhesive force between the slurry (glue) and the molecules on the surface of the membrane is strong, and the coating of the slurry is facilitated.
Further, the step S1 includes:
step S11, the surface of the film is polished by the friction cloth on the friction roller;
and step S12, performing dust removal treatment on the rubbing cloth through a negative pressure dust removal device.
Further, in step S1, when the rubbing roller is processing the film surface, the rotation direction of the rubbing roller is opposite to the moving direction of the film surface. The moving direction of the friction roller is opposite to the moving direction of the film surface, so that the grinding efficiency of the friction roller on the film surface is high, the uniformity of the surface roughness of the film surface is better, if the moving direction of the film surface is the same as the rotating direction of the friction roller, the grinding speed of the friction roller on the film surface is the difference of the speeds of the friction roller and the film surface, in this case, if the moving speed of the film surface is lower than the rotating speed of the friction roller, the film surface moving speed is lower, the processing efficiency of the film surface is affected, if the moving speed of the film surface is higher than the rotating speed of the friction roller, the friction roller rubs in the opposite direction relative to the film surface, but the friction roller rotates in the same direction as the moving direction of the film surface, and the uniformity of the film surface roughness is poor. The rotating direction of the friction roller is the same as the moving direction of the film surface, the polishing speed of the friction roller to the film surface is the sum of the rotating speed of the friction roller and the moving speed of the film surface, the friction roller always polishes in the opposite direction relative to the film surface, and the friction roller moves in the opposite direction relative to the film surface, so that the consistency of the roughness of the film surface is good.
The invention also provides a film surface treatment device, which is applied to the film surface treatment process and comprises the following steps:
a frame;
the friction roller is mounted on the rack, is rotatably connected with the rack, and is wrapped with friction cloth;
the two adjusting rollers are respectively arranged on two sides of the central axis of the friction roller so as to adjust the wrap angle of the film and the friction roller;
the coating mechanism is arranged on one side of the adjusting roller, and slurry coating is carried out on the surface of the film through the coating mechanism after the surface of the film is polished by the friction roller.
And further, a negative pressure dust removal device is arranged below the friction roller, and dust and particles on the surface of the friction cloth are removed by the negative pressure dust removal device after the surface of the film material is treated by the friction cloth.
Further, the negative pressure dust removal device comprises a high-speed negative pressure mechanism and a low-speed negative pressure mechanism, and the friction cloth firstly passes through the high-speed negative pressure mechanism and then is treated on the surface of the friction cloth through the low-speed negative pressure mechanism. Through twice negative pressure dust removal of the high-speed negative pressure mechanism and the low-speed negative pressure mechanism, a large amount of dust on the surface of the friction cloth can be removed by the high-speed negative pressure mechanism, then the low-speed negative pressure mechanism removes dust on the friction cloth, the dust removal effect on the surface of the friction cloth is better, and therefore the dust particles on the friction cloth can be effectively prevented from influencing the surface of a film and causing secondary pollution.
Further, the high-speed negative pressure mechanism comprises a first negative pressure cavity and a high-speed negative pressure port, and the high-speed negative pressure port is communicated with the first negative pressure cavity.
Further, the low-speed negative pressure mechanism comprises a second negative pressure cavity and a dust collecting plate, wherein a plurality of dust removing holes are formed in the dust collecting plate, and the dust removing holes are communicated with the second negative pressure cavity.
The film surface treatment process and the device have the advantages that the friction roller is used for rubbing the film surface, so that the surface energy of the aluminum plastic film is increased, the adhesive force of the film surface to molecules of glue is stronger, the slurry is not easy to fall off from the film surface, the adhesive property of the slurry and the film surface is stronger, the film is favorably compounded with other film layers, and the film is favorably attached to other objects.
Compared with a mode of improving the surface energy by corona, the mode of improving the surface energy by using a physical method is characterized in that the friction roller polishes the surface of the membrane to improve the surface energy, the temperature of the surface of the membrane is stable, the stability of molecules in the membrane is high, and the stability of other physical properties and chemical properties of the membrane is high. And the production efficiency is high, and the phenomena of embrittlement and even degradation can not be generated.
In addition, the friction roller always polishes the surface of the film along one direction, and the moving direction of the surface of the film is opposite to the rotating direction of the friction roller, so that the uniformity of the surface of the film is good, and the consistency of the surface energy of the film is good.
The friction roller is used for rubbing the surface of the film to increase the surface energy of the aluminum plastic film, so that substances polluting the environment are not generated, the energy is saved, the environment is protected, the friction coefficient, the shrinkage rate and the heat sealing strength of the film surface are stable all the time, and the stability of the film is better.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic flow diagram of a membrane surface treatment process of the present invention.
Fig. 2 is a schematic flow chart of step S1 in the film surface treatment process of the present invention.
Fig. 3 is a schematic structural view of the film surface treatment apparatus of the present invention.
Fig. 4 is a schematic view of a partial structure of the film surface treatment apparatus of the present invention.
In the figure: 1. a frame; 2. a rubbing roller; 3. a regulating roller; 4. a coating mechanism; 5. a negative pressure dust removing device; 6. a high-speed negative pressure mechanism; 7. a low-speed negative pressure mechanism; 8. a first negative pressure cavity; 9. a high-speed negative pressure port; 10. a second negative pressure cavity; 11. a dust collecting plate.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
As shown in fig. 1 and 2, which are the most preferred embodiments of the present invention, a film surface treatment process includes the following steps:
s1, performing a polishing process on the surface of the film through the friction roller 2 to form a new surface layer with a larger area on the surface of the film and increase the surface energy of the surface of the film;
and S2, performing a slurry coating process on the surface of the membrane.
The film surface treatment process of the invention rubs the film surface through the friction roller 2, can improve the surface energy of the film surface, and has the following principle: in solid physics, surface atoms have more energy than atoms inside a substance, and therefore, according to the principle of lowest energy, atoms spontaneously tend to the inside of a substance rather than the surface, a new surface is formed by rubbing the surface of the film, the bond energy of the atoms on the surface layer facing the outside is not compensated, so that surface particles have extra potential energy than internal particles, i.e., the surface energy, and thus, the roughness of the film surface increases after rubbing, the film surface creates a new larger skin layer, which has a greater surface energy, and thus the surface energy of the film surface increases, when the film surface is coated with the sizing agent, the film surface has stronger adhesive force to molecules of the glue, the sizing agent is not easy to fall off from the film surface, the bonding property of the sizing agent and the film surface is stronger, the film is favorably compounded with other film layers, and the film is also favorably attached to other objects.
And after the membrane surface is polished in the step S1, performing a slurry coating process on the membrane surface in the step S2 within 0-10 min. Because the potential energy of the newly created surface layer is unstable, and the surface energy is gradually reduced through surface atom recombination and mutual reaction or adsorption to other surrounding molecules or atoms along with the increase of time, the slurry coating needs to be carried out before the surface energy of the membrane is reduced, and the slurry (glue) is coated in 0-10min, so that the adhesive force between the slurry (glue) and the molecules on the surface of the membrane is strong, and the coating of the slurry is facilitated.
Step S1 includes:
step S11, the surface of the film is polished by the rubbing cloth on the rubbing roller 2;
in step S12, the negative pressure dust removing device 5 removes dust from the rubbing cloth.
In step S1, when the rubbing roller 2 treats the film surface, the rotation direction of the rubbing roller 2 is opposite to the moving direction of the film surface. The moving direction of the friction roller 2 is opposite to the moving direction of the film surface, so that the grinding efficiency of the friction roller 2 on the film surface is high, the uniformity of the surface roughness of the film surface is better, if the moving direction of the film surface is the same as the rotating direction of the friction roller 2, the grinding speed of the friction roller 2 on the film surface is the difference of the speeds of the two, in this case, if the moving speed of the film surface is lower than the rotating speed of the friction roller 2, the processing efficiency of the film surface is affected, if the moving speed of the film surface is higher than the rotating speed of the friction roller 2, the film surface is equivalent to the friction of the friction roller 2 in the opposite direction relative to the film surface, but the friction roller 2 rotates in the same direction as the moving direction of the film surface, and the uniformity of the surface roughness of the film surface is poor. The rotating direction of the friction roller 2 is the same as the moving direction of the film surface, the polishing speed of the friction roller 2 to the film surface is the sum of the rotating speed of the friction roller 2 and the moving speed of the film surface, the friction roller 2 always polishes in the opposite direction relative to the film surface, and the friction roller 2 moves in the opposite direction relative to the film surface, so that the consistency of the roughness of the film surface is good.
Referring to fig. 3 and 4, the present invention also provides a film surface treatment apparatus, which is applied to the film surface treatment process, including: the device comprises a rack 1, a friction roller 2, two adjusting rollers 3 and a coating mechanism 4, wherein the friction roller 2 is arranged on the rack 1, the friction roller 2 is rotationally connected with the rack 1, and the circumferential surface of the friction roller 2 is wrapped with friction cloth; the two adjusting rollers 3 are respectively arranged on two sides of the central axis of the friction roller 2 to adjust the wrap angle of the film and the friction roller 2; the coating mechanism 4 is arranged on one side of the adjusting roller 3, and after the film surface is polished by the friction roller 2, the coating mechanism 4 is used for coating slurry on the film surface.
A negative pressure dust removal device 5 is arranged below the friction roller 2, and dust and particles on the surface of the friction cloth are removed by the negative pressure dust removal device 5 after the surface of the film material is treated by the friction cloth.
The negative pressure dust removing device 5 comprises a high-speed negative pressure mechanism 6 and a low-speed negative pressure mechanism 7, and the friction cloth firstly passes through the high-speed negative pressure mechanism 6 and then passes through the low-speed negative pressure mechanism 7 to treat the surface of the friction cloth. The high-speed negative pressure mechanism 6 comprises a first negative pressure cavity 8 and a high-speed negative pressure port 9, and the high-speed negative pressure port 9 is communicated with the first negative pressure cavity 8. The low-speed negative pressure mechanism 7 comprises a second negative pressure cavity 10 and a dust collecting plate 11, wherein a plurality of dust removing holes are formed in the dust collecting plate 11, and the dust removing holes are communicated with the second negative pressure cavity 10. Through two times of negative pressure dust removal of high-speed negative pressure mechanism 6 and low-speed negative pressure mechanism 7, a large amount of dust on friction cloth surface can be gone out to high-speed negative pressure mechanism 6, then the rethread low-speed negative pressure removes dust to friction cloth, and is better to the dust removal effect on friction cloth surface to can effectively avoid the dust granule on the friction cloth to produce influence and secondary pollution to the membrane surface.
The film surface treatment process and the device of the invention rub the film surface through the rubbing roll 2, which can improve the surface energy of the film surface, and the principle is as follows: in solid physics, surface atoms have more energy than atoms inside a substance, and therefore, according to the principle of lowest energy, atoms spontaneously tend to the inside of a substance rather than the surface, a new surface is formed by rubbing the surface of the film, the bond energy of the atoms on the surface layer facing the outside is not compensated, so that surface particles have extra potential energy than internal particles, i.e., the surface energy, and thus, the roughness of the film surface increases after rubbing, the film surface creates a new larger skin layer, which has a greater surface energy, and thus the surface energy of the film surface increases, when the film surface is coated with the sizing agent, the film surface has stronger adhesive force to molecules of the glue, the sizing agent is not easy to fall off from the film surface, the bonding property of the sizing agent and the film surface is stronger, the film is favorably compounded with other film layers, and the film is also favorably attached to other objects.
In addition, by polishing the surface of the film, the surface area of the surface of the film is increased, the adhesion between the surface of the film and coating slurry (glue) is also improved, the roughness is increased, the surface area of the surface of the film is increased, the contact surface of the glue infiltrated into the micro-gaps on the surface of the film is larger, the adhesion with the film is better, the adhesion between the glue and the film is improved, and the adhesion is also improved under the condition of sufficient cohesive force of the glue.
The surface treatment is carried out by the method of polishing the surface of the membrane by the friction roller 2, the consistency of the surface roughness after the treatment is good, the surface energy is higher, and other physical and chemical characteristics of the surface of the membrane cannot be influenced. The roughness of the film surface can be adjusted by changing the specification of the rubbing cloth. The polishing treatment effect is not influenced by the production speed, the production efficiency is high, and the polishing process does not generate waste liquid and dust to carry out secondary pollution on the surface of the membrane through the treatment of the negative-pressure dust removal device 5.
The film surface treatment process and the device have the advantages that the friction roller is used for rubbing the film surface, so that the surface energy of the aluminum plastic film is increased, the adhesive force of the film surface to molecules of glue is stronger, the slurry is not easy to fall off from the film surface, the adhesive property of the slurry and the film surface is stronger, the film is favorably compounded with other film layers, and the film is favorably attached to other objects.
Compared with a mode of improving the surface energy by corona, the mode of improving the surface energy by using a physical method is characterized in that the friction roller polishes the surface of the membrane to improve the surface energy, the temperature of the surface of the membrane is stable, the stability of molecules in the membrane is high, and the stability of other physical properties and chemical properties of the membrane is high. And the production efficiency is high, and the phenomena of embrittlement and even degradation can not be generated.
In addition, the friction roller always polishes the surface of the film along one direction, and the moving direction of the surface of the film is opposite to the rotating direction of the friction roller, so that the uniformity of the surface of the film is good, and the consistency of the surface energy of the film is good.
The friction roller is used for rubbing the surface of the film to increase the surface energy of the aluminum plastic film, so that substances polluting the environment are not generated, the energy is saved, the environment is protected, the friction coefficient, the shrinkage rate and the heat sealing strength of the film surface are stable all the time, and the stability of the film is better.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined by the scope of the claims.
Claims (9)
1. A film surface treatment process is characterized in that: the method comprises the following steps:
step S1, adopting a rubbing roller (2) to polish the surface of the film, so that a new surface layer S1 with a larger area is formed on the surface of the film, and the surface energy of the surface layer S1 is increased;
step S2, a slurry coating process is performed on the film surface.
2. The film surface treatment process according to claim 1, characterized in that: and after the membrane surface is polished in the step S1, performing a slurry coating process on the membrane surface in the step S2 within 0-10 min.
3. The film surface treatment process according to claim 1, characterized in that: the step S1 includes:
step S11, the surface of the film is polished by the rubbing cloth on the rubbing roller (2);
and step S12, performing dust removal treatment on the friction cloth through the negative pressure dust removal device (5).
4. The film surface treatment process according to claim 1, characterized in that: in step S1, when the rubbing roller (2) treats the film surface, the rotation direction of the rubbing roller (2) is opposite to the moving direction of the film surface.
5. A film surface treatment apparatus used in the film surface treatment process according to any one of claims 1 to 4, characterized in that: the method comprises the following steps:
a frame (1);
the friction roller (2) is installed on the rack (1), the friction roller (2) is rotatably connected with the rack (1), and friction cloth wraps the circumferential surface of the friction roller (2);
the two adjusting rollers (3) are respectively arranged on two sides of the central axis of the friction roller (2) so as to adjust the wrap angle of the film and the friction roller (2);
the coating mechanism (4) is arranged on one side of the adjusting roller (3), and after the film surface is polished by the friction roller (2), the film surface is coated with slurry by the coating mechanism (4).
6. The film surface treatment apparatus according to claim 5, wherein: and a negative pressure dust removal device (5) is arranged below the friction roller (2), and dust and particles on the surface of the friction cloth are removed by the negative pressure dust removal device (5) after the surface of the film material is treated by the friction cloth.
7. The film surface treatment apparatus according to claim 6, wherein: the negative pressure dust removal device (5) comprises a high-speed negative pressure mechanism (6) and a low-speed negative pressure mechanism (7), and the surface of the friction cloth is treated by the friction cloth firstly passing through the high-speed negative pressure mechanism (6) and then passing through the low-speed negative pressure mechanism (7).
8. The film surface treatment apparatus according to claim 7, wherein: the high-speed negative pressure mechanism (6) comprises a first negative pressure cavity (8) and a high-speed negative pressure port (9), and the high-speed negative pressure port (9) is communicated with the first negative pressure cavity (8).
9. The film surface treatment apparatus according to claim 7, wherein: the low-speed negative pressure mechanism (7) comprises a negative pressure cavity II (10) and a dust collecting plate (11), wherein a plurality of dust removing holes are formed in the dust collecting plate (11), and the dust removing holes are communicated with the negative pressure cavity II (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210537170.8A CN114633498A (en) | 2022-05-18 | 2022-05-18 | Film surface treatment process and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210537170.8A CN114633498A (en) | 2022-05-18 | 2022-05-18 | Film surface treatment process and device |
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| CN114633498A true CN114633498A (en) | 2022-06-17 |
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| JPH10253961A (en) * | 1997-01-08 | 1998-09-25 | Seiko Epson Corp | Method and device for rubbing substrate |
| JP2005266019A (en) * | 2004-03-17 | 2005-09-29 | Dainippon Printing Co Ltd | Method and apparatus for rubbing |
| CN102087442A (en) * | 2009-12-08 | 2011-06-08 | 富士胶片株式会社 | Grinding treatment method, grinding treatment device, and method and device for manufacturing optical compensation films |
| CN102866541A (en) * | 2012-09-25 | 2013-01-09 | 京东方科技集团股份有限公司 | Friction device of alignment film and method for preparing alignment film using friction device |
| TW201438823A (en) * | 2013-04-12 | 2014-10-16 | Fujifilm Corp | Method for rubbing process |
| CN105935642A (en) * | 2016-05-31 | 2016-09-14 | 安徽浙源再生纸业科技有限公司 | Corrugated paper gumming machine |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10253961A (en) * | 1997-01-08 | 1998-09-25 | Seiko Epson Corp | Method and device for rubbing substrate |
| JP2005266019A (en) * | 2004-03-17 | 2005-09-29 | Dainippon Printing Co Ltd | Method and apparatus for rubbing |
| CN102087442A (en) * | 2009-12-08 | 2011-06-08 | 富士胶片株式会社 | Grinding treatment method, grinding treatment device, and method and device for manufacturing optical compensation films |
| CN102866541A (en) * | 2012-09-25 | 2013-01-09 | 京东方科技集团股份有限公司 | Friction device of alignment film and method for preparing alignment film using friction device |
| TW201438823A (en) * | 2013-04-12 | 2014-10-16 | Fujifilm Corp | Method for rubbing process |
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