阅读说明：本技术 高清离型膜的制备方法 (Preparation method of high-definition release film ) 是由 袁文新 范国训 丁维东 钱利杰 于 2020-06-03 设计创作，主要内容包括：本发明公开了一种高清离型膜的制备方法,将上述用于形成硅油结合层的料输入到第一挤出机中,将上述用于形成薄膜支承层的料输入到第二挤出机中,将上述用于形成辅助收卷层的料输入到第三挤出机中,通过三腔模头在模唇口将各挤出机挤出的熔体复合在一起；复合熔体在高压静电吸附的作用下,在急冷辊上获得冷却以形成待拉伸的膜片；将膜片送入纵向拉伸辊,沿膜片的纵向方向进行拉伸形成基膜；将基膜送入涂覆装置,涂覆装置中连续旋转的涂油辊将硅油涂覆于在线连续移动的基膜表面,在基膜表面形成硅油层；将涂有硅油的基膜送入横向拉伸机预热后进行横向拉伸得到高清离型膜。本发明具有使硅油附着力强的优点。(The invention discloses a preparation method of a high-definition release film, which comprises the steps of inputting the material for forming a silicone oil bonding layer into a first extruder, inputting the material for forming a film supporting layer into a second extruder, inputting the material for forming an auxiliary rolling layer into a third extruder, and compounding melts extruded by the extruders together at a die lip through a three-cavity die head; the composite melt is cooled on a quenching roller under the action of high-voltage electrostatic adsorption to form a membrane to be stretched; feeding the membrane into a longitudinal stretching roller, and stretching along the longitudinal direction of the membrane to form a base membrane; sending the base film into a coating device, coating silicone oil on the surface of the base film which continuously moves on line by using an oiling roller which continuously rotates in the coating device, and forming a silicone oil layer on the surface of the base film; and (3) feeding the base film coated with the silicone oil into a transverse stretcher for preheating, and then performing transverse stretching to obtain the high-definition release film. The invention has the advantage of strong adhesion of silicone oil.)

1. The high-definition release film comprises a base film and a silicon oil layer, and is characterized in that the base film comprises:

the film comprises a silicone oil binding layer, an auxiliary rolling layer and a film supporting layer positioned between the silicone oil binding layer and the auxiliary rolling layer, wherein the silicone oil binding layer consists of 55-65 parts of PET (polyethylene terephthalate) big bright slices and 35-45 parts of PET master batch in parts by weight;

the film supporting layer consists of 90-95 parts of PET organic light material and 5-10 parts of PET anti-reflection master batch;

the auxiliary rolling layer consists of 45-55 parts of PET big gloss material and 45-55 parts of PET silicon master batch;

the silicon oil layer consists of 82-87 parts of main agent, 1-3 parts of cross-linking agent, 9-13 parts of catalyst and 1-2 parts of anchoring agent;

the high-definition release film is prepared on a continuous production line by adopting the following steps:

extruding: feeding the material for forming the silicone oil bonding layer into a first extruder, feeding the material for forming the film supporting layer into a second extruder, feeding the material for forming the auxiliary roll layer into a third extruder, and compounding the melts extruded from the extruders together at a die lip through a three-cavity die;

casting a sheet: the composite melt is cooled on a quenching roller under the action of high-voltage electrostatic adsorption to form a membrane to be stretched;

longitudinally pulling: feeding the membrane into a longitudinal stretching roller, and stretching along the longitudinal direction of the membrane to form a base membrane;

coating silicone oil: sending the base film into a coating device, coating silicone oil on the surface of the base film which continuously moves on line by using an oiling roller which continuously rotates in the coating device, and forming a silicone oil layer on the surface of the base film;

transversely pulling: and (3) feeding the base film coated with the silicone oil into a transverse stretcher for preheating, and then performing transverse stretching and shaping to obtain the high-definition release film.

2. The preparation method of the high-definition release film according to claim 1, wherein in the silicone oil bonding layer, 60 parts of PET big bright slices and 40 parts of PET master batch are used.

3. The preparation method of the high-definition release film according to claim 1, wherein 95 parts of PET organic gloss material and 5 parts of PET anti-reflection master batch are contained in the film supporting layer.

4. The preparation method of the high-definition release film according to claim 1, wherein the auxiliary winding layer comprises 50 parts of PET big gloss and 50 parts of PET silicon master batch.

5. The preparation method of the high-definition release film according to claim 1, wherein the silicone oil layer comprises 85 parts of a main agent, 3 parts of a cross-linking agent, 11 parts of a catalyst and 1 part of an anchoring agent.

6. The preparation method of the high-definition release film according to claim 1 or 5, wherein in the silicone oil layer, a main agent is emulsified silicone oil, a cross-linking agent is hydrogenated silicone oil, a catalyst is platinum, and an anchoring agent is a silane coupling agent.

7. The method for preparing the high-definition release film according to claim 1, wherein the drawing magnification of longitudinal drawing is 3.0 to 3.8 times, the drawing temperature is 80 to 100 ℃, and then the film is cooled by a cooling roller group with the temperature of 20 to 50 ℃.

8. The method for preparing high-definition release film according to claim 1, wherein the preheating temperature of the transverse stretching machine is 95-120 ℃, the temperature during transverse stretching is 100-.

Technical Field

The invention relates to a preparation method of a high-definition release film.

Background

Protective films need to be pasted on automobile windows and front and rear glass baffles, some protective films need to be pasted on large building windows or glass curtain walls, the protective films are commonly called window films, some functional protective films with ultraviolet resistance, infrared resistance and the like need to be pasted on the automobile windows or the glass curtain walls, the protective films need to be pasted on the surfaces of finished products because adhesive stickers are coated on the surfaces of the finished products, and the protective films need to be pasted on release films in the processing and storage processes. The release film is prepared by coating a silicone release agent on the surface layer of base films such as environment-friendly PET, PE, OPP, BOPET and the like, so that the release film can show extremely light and stable release force for various organic pressure-sensitive adhesives.

The existing release film is manufactured in an off-line coating mode, a high-definition BOPET base film is used as a base material, and the base film is coated with silicone oil through an off-line coating machine and then used in downstream processes.

In addition, the prior BOPET base film is coated with silicone oil by adopting a coating device, namely, when an oil coating roller in the coating device rotates to pass through a silicone oil groove, the mesh of the oil coating roller is filled with the silicone oil, after the oil coating roller leaves the silicone oil groove, the silicone oil at the smooth part of the surface of the oil coating roller is scraped by a scraper, the oil coating roller adopts a reticulate pattern roller, when the oil coating roller filled with the silicone oil in the mesh is contacted with the base film, the silicone oil is transferred onto the base film under the pressure of a rubber roller, and the silicone oil is changed into a continuous uniform silicone oil layer from a discontinuous reticulate pattern by a smooth flattening roller. And the transferred oiling roller is immersed into the silicon oil tank again, and the operation is repeated in this way to form a continuous silicon oil liquid layer.

In the existing coating device, after the oil coating roller is adhered with the silicone oil in the oil coating roller through the silicone oil groove, air bubbles are easily formed in the silicone oil, and the silicone oil is unevenly coated. In addition, after the base film is coated with the silicone oil, since the silicone oil has a certain viscosity, when the base film is separated from the oiling roller, silicone oil threads are formed between the base film and the oiling roller, and once the silicone oil threads are adhered to the base film, the base film becomes a waste film.

Disclosure of Invention

The invention provides a preparation method of a high-definition release film capable of enabling silicone oil to have strong adhesive force.

The preparation method of the high-definition release film comprises a base film and a silicon oil layer, wherein the base film comprises:

the film comprises a silicone oil binding layer, an auxiliary rolling layer and a film supporting layer positioned between the silicone oil binding layer and the auxiliary rolling layer, wherein the silicone oil binding layer consists of 55-65 parts of PET (polyethylene terephthalate) big bright slices and 35-45 parts of PET master batch in parts by weight;

the film supporting layer consists of 90-95 parts of PET organic light material and 5-10 parts of PET anti-reflection master batch;

the auxiliary rolling layer consists of 45-55 parts of PET big gloss material and 45-55 parts of PET silicon master batch;

the silicon oil layer consists of 82-87 parts of main agent, 1-3 parts of cross-linking agent, 9-13 parts of catalyst and 1-2 parts of anchoring agent;

the high-definition release film is prepared on a continuous production line by adopting the following steps:

extruding: feeding the material for forming the silicone oil bonding layer into a first extruder, feeding the material for forming the film supporting layer into a second extruder, feeding the material for forming the auxiliary roll layer into a third extruder, and compounding the melts extruded from the extruders together at a die lip through a three-cavity die;

casting a sheet: the composite melt is cooled on a quenching roller under the action of high-voltage electrostatic adsorption to form a membrane to be stretched;

longitudinally pulling: feeding the membrane into a longitudinal stretching roller, and stretching along the longitudinal direction of the membrane to form a base membrane;

coating silicone oil: sending the base film into a coating device, coating silicone oil on the surface of the base film which continuously moves on line by using an oiling roller which continuously rotates in the coating device, and forming a silicone oil layer on the surface of the base film;

transversely pulling: and (3) feeding the base film coated with the silicone oil into a transverse stretcher for preheating, and then performing transverse stretching and shaping to obtain the high-definition release film.

In the preparation method, the silicon oil bonding layer does not reduce the light transmittance and the definition of the base film, and the active ingredient of the silicon oil bonding layer contains polar groups of the silicone oil, so that the adhesive force of the silicon oil can be increased. The film supporting layer can improve the transparency and the definition of the base film. The auxiliary rolling layer can not reduce the light transmittance and the definition of the base film, and can also play an opening effect and facilitate the rolling of the film. The emulsion type silicone oil is economical and environment-friendly, the silicone oil formula contains a main agent, a cross-linking agent, a catalyst and an anchoring agent, wherein the cross-linking curing reaction degree of the silicone oil can be directly influenced by the matching of the main agent and the cross-linking agent, and the adhesion of the silicone oil and a base film layer can be increased by adding a certain amount of the anchoring agent.

After the invention is formed by coating the silicone oil on line through biaxial stretching, the width of the product can be cut at will according to the requirements of users, the production speed is high, the efficiency is high, the problem of secondary coating polluting the film surface does not exist, the definition of the finished film can be kept, the problem of adhesion stability of the silicone oil can be solved, and the product can completely replace the similar products coated off line. Therefore, the high-definition release film has the advantages of high definition and stable silicone oil adhesive force.

In addition, the processes from feeding to transverse stretching are all on-line continuous production, extra heat energy does not need to be consumed after oil coating, drying, crosslinking and curing of the silicone oil can be realized only by utilizing the heat in the transverse film drawing production process, the batch size of one-time production is large, and the comprehensive cost is lower than that of off-line coating.

Drawings

FIG. 1 is a schematic view of a high-clarity release film according to the present invention;

FIG. 2 is a flow chart of the preparation of the high-definition release film of the invention;

FIG. 3 is a schematic view of a coating apparatus;

FIG. 4 is a schematic view of an air knife assembly;

FIG. 5 is a schematic view of a cleaning device for the oiling roller;

fig. 6 is a schematic view of the first rotating mechanism cooperating with the first transmission member;

reference numbers in the drawings:

a is an oiling roller, B is a base film, and C is a shaft head;

1 is a silicon oil combining layer, 2 is a film supporting layer, 3 is an auxiliary rolling layer, and 4 is a silicon oil layer;

5 is a glue dipping tank, 6 is an oil scraping assembly, 6a is a mounting seat, 7 is a second support, 8 is a pressure applying part, 9 is a guiding part, 10 is an upper shell, 11 is a lower shell, and 12 is an air nozzle;

13 is a cleaning tank, 13a is a first side wall portion, 13b is a second side wall portion, 14 is a cleaning liquid, 15 is a first rotating mechanism, 16 is a second rotating mechanism, 17 is a first transmission member, 18 is a second transmission member, 19 is a driving mechanism, 20 is an ultrasonic generator, 21 is a sealing sleeve, 22 is a brush, 23 is a second motor, 24 is a screw rod, 25 is a nut, 26 is a guide rail, and 27 is a heater.

Detailed Description

Example 1

As shown in fig. 1 and 2, in the preparation method of the high-definition release film of the present invention, the high-definition release film comprises a base film B and a silicon oil layer 4, the base film B comprises a silicon oil combining layer 1, an auxiliary rolling layer 3, and a thin film supporting layer 2 located between the silicon oil combining layer 1 and the auxiliary rolling layer 3, and the silicon oil combining layer 1 is composed of 60 parts of PET big bright slices and 40 parts of PET master batch; the film supporting layer 2 is composed of 95 parts of PET (polyethylene terephthalate) high gloss material and 5 parts of PET anti-reflection master batch, the PET anti-reflection master batch preferably adopts nano-scale PET anti-reflection master batch, and the film supporting layer 2 can improve the transparency and the definition of the base film. The auxiliary rolling layer 3 is composed of 50 parts of PET big gloss material and 50 parts of PET silicon master batch, the PET silicon master batch preferentially adopts the nanoscale PET silicon master batch, and the nanoscale PET silicon master batch cannot reduce the light transmittance and the definition of the base film. The silicon oil layer consists of 85 parts of main agent, 3 parts of cross-linking agent, 11 parts of catalyst and 1 part of anchoring agent. In the silicone oil layer 4, emulsified silicone oil is preferably used as a main agent, hydrogenated silicone oil is preferably used as a cross-linking agent, platinum is preferably used as a catalyst, and a silane coupling agent is preferably used as an anchoring agent. The formula can ensure that the definition of the release film is more than or equal to 99 percent and the haze is less than or equal to 1.2 percent, thereby forming the high-definition release film. The high-definition release film is prepared on a continuous production line by adopting the following steps:

extruding: the above-mentioned material for forming the silicone oil anchor layer 1 was fed into a first extruder, the above-mentioned material for forming the film-supporting layer 2 was fed into a second extruder, the above-mentioned material for forming the auxiliary roll layer 3 was fed into a third extruder, and the melts extruded from the respective extruders were compounded together at the die lip through a three-cavity die to form a compounded melt.

Casting a sheet: the composite melt is cooled on a quenching roller under the action of high-voltage electrostatic adsorption to form a membrane to be stretched.

Longitudinally pulling: the film sheet was fed to a longitudinal stretching roll, stretched in the longitudinal direction of the film sheet to form a base film B at a stretching ratio of 3.1 times and a stretching temperature of 85 ℃ and then cooled with a 30 ℃ cooling roll group.

Coating silicone oil: and (3) sending the base film B into a coating device, coating silicone oil on the surface of the base film which continuously moves on line by using a continuously rotating oiling roller in the coating device, and forming a silicone oil layer on the surface of the base film.

Transversely pulling: and (3) feeding the base film coated with the silicone oil into a transverse stretcher for preheating, and then performing transverse stretching to obtain the high-definition release film. The preheating temperature of the transverse stretching machine was 105 ℃, the temperature during transverse stretching was 105 ℃, the stretching ratio was 3.5 times, and then the stretched film was heat-set while being relaxed in the width direction, the heat-set temperature was 230 ℃, the time was 12s, and the relaxation rate was 4%.

After being transversely pulled, the paper is rolled under the action of a traction machine, and finally, the paper is cut according to the requirement.

The coating device adopted in the invention is shown in figure 3 and comprises an oil immersion groove 5 and an oil scraping assembly 6, wherein the oil scraping assembly 6 comprises a mounting seat 6a and a scraper, the mounting seat 6a is preferentially arranged in the oil immersion groove 5, the scraper is fixed with the mounting seat 6a, and the scraper scrapes silicon oil on the surface of the oiling roller A, so that the amount of the silicon oil on the surface of the oiling roller A is controlled, and the silicon oil on the surface of the rubberized oiling roller A is uniformly distributed, and the subsequent rubberizing uniformity is facilitated.

As shown in fig. 3, the coating apparatus of the present embodiment further includes a degassing unit, the degassing unit is located upstream of the oil scraping unit 6, the degassing unit includes a second support 7 located in the oil immersion tank 5, and a spring plate cooperating with the rotating oil applying roller a to press the surface of the oil applying roller a, one end of the second support 7 is fixed to the oil immersion tank 5, and the spring plate is fixed to the second support 7. When the oiling roller A passes through the oil immersion groove 5, more silicon oil is attached to the surface of the oiling roller A, the oiling roller A extrudes the spring piece when passing through the spring piece along with the rotation of the oiling roller A, and at the moment, the backward extrusion force of the spring piece acts on the oiling roller A to extrude the silicon oil, so that bubbles in the silicon oil are broken through, and gas in the silicon oil is discharged. And through the extrusion, can squeeze some silicone oil back to in the immersion oil groove 5 to alleviate the frictioning burden of follow-up frizing subassembly 6, promote the quality of fat liquoring.

As shown in fig. 3, the spring plate includes a pressing portion 8 engaged with the oiling roller and a guide portion 9 guiding the extruded silicone oil, one end of the guide portion 9 is connected to one end of the pressing portion 8, and the other end of the guide portion 9 is located in the oil immersion groove 5. An angle is formed between the guide portion 9 and the pressing portion 8, which enables the pressing portion 8 to maintain the pressing force against the oiling roller a and facilitates the silicone oil to be guided by the guide portion 9. The pressing part 8 is arc-shaped.

Preferably, as shown in fig. 4, the coating apparatus further includes an air knife assembly for cutting the silicone oil filaments between the base film B and the oiling roller a, the air knife assembly including: the structure comprises a gas supply part (not shown in the figure), an upper shell 10 with a containing cavity and a lower shell 11 with a containing cavity, wherein a first end part is arranged on the upper shell 10, a second end part is arranged on the lower shell 11, after the upper shell 10 and the lower shell 11 are combined, an air nozzle 12 extending along the axial direction of an oiling roller A is formed between the first end part and the second end part, and the air nozzle 12 is opposite to the position where a film B and the oiling roller A are separated.

As shown in fig. 4, when the air knife assembly is in operation, gas is ejected from the air nozzle 12, and the air nozzle 12 extends along the axial direction of the oiling roller a, so that the gas ejected from the air nozzle 12 is knife-shaped, thereby cutting off the silicone oil filament adhered to the film B, the silicone oil filament falls onto the surface of the oiling roller a or directly falls into the oil immersion groove 5, and the silicone oil filament falling onto the surface of the oiling roller a enters the oil immersion groove 5 along with the rotation of the oiling roller a and is dissolved into the silicone oil in the oil immersion groove 5. The gluing quality of the film B is ensured by the air knife assembly.

In the invention, the oiling roller A preferably adopts an anilox roller, and in the use process of the anilox roller, as the use time is increased, silicone oil blocks the shape of the anilox roller, so that the coating effect of the silicone oil is reduced, and the base film B is unqualified to be coated, therefore, the anilox roller needs to be cleaned regularly. Therefore, the invention also provides a cleaning device for the oiling roller A.

As shown in fig. 5 and 6, the cleaning device of the oiling roller a includes a cleaning tank 13 and a cleaning solution 14 (the cleaning solution 14 is a mixture of water and a cleaning agent) disposed in the cleaning tank 13, an assembly groove matched with a shaft head C of the oiling roller a is disposed on each of the first side wall portion 13a and the second side wall portion 13b which enclose the cleaning tank 13, when the oiling roller a needs to be cleaned, the shaft head C is put into the assembly groove from a notch of the assembly groove, a part of the shaft head C is located outside the cleaning tank 13, and the shaft head C can rotate freely relative to the assembly groove. Since the cleaning tank 13 is filled with the cleaning liquid 14, after the first side wall portion 13a and the second side wall portion 13b are provided with the mounting grooves, the liquid level of the cleaning liquid 14 needs to be located below the bottom of the mounting groove to prevent the cleaning liquid 14 from overflowing to the outside of the cleaning tank 13 through the mounting grooves.

Therefore, in the present invention, the cleaning device further includes a first rotating mechanism 15, a second rotating mechanism 16, a first transmission member 17 connected to the shaft head C at one end of the oiling roller a, a second transmission member 18 connected to the shaft head C at the other end of the oiling roller a, a driving mechanism 19, and an ultrasonic generator 20, wherein the first rotating mechanism 15 is pivotally mounted on the first side wall portion 13a, the second rotating mechanism 16 is pivotally mounted on the second side wall portion 13b, the first rotating mechanism 15 is freely rotatable with respect to the first side wall portion 13a, and the second rotating mechanism 16 is freely rotatable with respect to the second side wall portion 13 b. The first transmission part 17 cooperates with the first rotation mechanism 15 and the second transmission part 18 cooperates with the second rotation mechanism 16.

The driving mechanism 19 is connected to the first rotating mechanism 15 or the second rotating mechanism 16, and in this embodiment, the driving mechanism 19 is preferably connected to the first rotating mechanism 15. In the present invention, the driving mechanism 19 includes a first motor and a coupling, an output end of the first motor is connected to one end of the coupling, and the other end of the coupling is connected to the first rotating mechanism 15.

When the driving mechanism 19 drives the first rotating mechanism 15 to rotate, the first rotating mechanism 15 drives the first transmission part 17 to rotate, so that the oiling roller a rotates, the second transmission part 18 installed on the other end shaft head C also rotates, and the second transmission part 18 drives the second rotating mechanism 16 to rotate. Only a part of the oiling roller A is soaked in the cleaning liquid 14, and each glued part of the oiling roller A can act with the cleaning liquid 14 by rotating the oiling roller A.

The ultrasonic generator 20 disperses or peels off the silicone oil bonded to the oiling roller a, and at least a part of the ultrasonic generator 20 is located in the cleaning tank 13. In the invention, the cavitation action, the acceleration action and the direct current action of the ultrasonic wave emitted by the ultrasonic generator 20 in the liquid directly and indirectly act on the silicone oil, so that the silicone oil on the oiling roller A is dispersed and stripped to achieve the cleaning purpose. Through the cleaning action of ultrasonic generator 20, can make the silicone oil separate on the oiling roller A fast, not only promote abluent quality, promoted the cleaning efficiency moreover.

The first rotating mechanism 15 includes two first rotating members, the two first rotating members are mutually matched, each first rotating member is composed of a first driving roller and a first shaft, the first shaft is supported on the first side wall portion 13a through a bearing, the first driving roller is fixed with the first shaft, and the first driving member 17 preferably adopts a bearing or a driving roller. After the first transmission member 17 is matched with the two first rotation members, the two first rotation members form a supporting force for the first transmission member. Through the structure, the first rotating mechanism 15 forms direct support for the first transmission part 17, the first rotating mechanism 15 forms indirect support for the oiling roller A through the first transmission part 17, and the first rotating mechanism 15 does not need to adopt other support mechanisms to support the first transmission part 17 and the oiling roller A. The first rotating member and the first transmission member 17 may also employ gears.

The second rotating mechanism 16 includes two second rotating members that are engaged with each other, the second rotating members are formed by a second driving roller and a second shaft, the second shaft is supported on the second sidewall portion 13b by a bearing, the second driving roller is fixed to the second shaft, and the second driving member 18 preferably employs a bearing or a driving roller. After the second transmission member 18 is matched with the two second rotating members, the two second rotating members form a supporting force for the second transmission member 18. Through the structure, the second rotating mechanism 16 forms a direct support for the second transmission part 18, the second rotating mechanism 16 forms an indirect support for the oiling roller A through the second transmission part 18, and the second rotating mechanism 16 does not need to adopt other support mechanisms to support the second transmission part 18 and the oiling roller A. The second rotating member and the second transmission member 18 may also employ gears.

The cleaning device also comprises a sealing sleeve 21 with a U-shaped section, and after the sealing sleeve 21 is matched with the assembling groove, the sealing sleeve 21 is supported on the cleaning groove 13. The sealing sleeve 21 is made of plastic or rubber, and the sealing sleeve 21 can deform under the extrusion of the shaft head C, so that the sealing sleeve 21 and the shaft head C can be matched to play a sealing role, and the overflow of the cleaning liquid 14 is further avoided.

The sealing sleeves 21 matched in the two assembling grooves respectively abut against the first transmission part 17 and the second transmission part 18, and axial limiting is formed on the first transmission part 17 and the second transmission part 18 respectively. The oiling roller A is prevented from axially moving under the action of the sealing sleeve 21, so that the oiling roller A is stably positioned.

The cleaning device also comprises a reciprocating brushing mechanism which brushes along the axial direction of the oiling roller A in a reciprocating way. The reciprocating brushing mechanism comprises: a reciprocating drive mechanism, and a brush 22 connected to an output part of the reciprocating drive mechanism. The reciprocating drive mechanism drives the brush 22 to reciprocate, so that the brush 22 can further clean the surface of the oiling roller A, and the silicon oil can be separated from the oiling roller A more quickly.

The reciprocating driving mechanism comprises a second motor 23, a screw rod 24, a nut 25 and a guide rail 26, wherein the output end of the second motor 23 is connected with the screw rod 24, the nut 25 is in threaded fit with the screw rod 24, a sliding groove is formed in the guide rail 26, and the nut 25 is in clearance fit with the sliding groove in the guide rail 26. When the second motor 23 works, the second motor 23 drives the screw rod 24 to rotate, and the screw rod 24 drives the nut 25 to move linearly. The nut 25 drives the brush 22 to move linearly, and controls the second motor 23 to rotate forward and backward, so that the brush 22 reciprocates.

The cleaning device further comprises a heater 27 for heating the cleaning liquid 14, the heating temperature is 20-100 ℃, and after the cleaning liquid 14 is heated by the heater 27, the activity of the cleaning liquid 14 is improved, silicone oil can be stripped easily, and the surface of the oiling roller A can be cleaned.

When the oiling roller A needs to be cleaned, the shaft head C falls into the assembly groove from the notch of the assembly groove, the first transmission part 17 is supported by the first rotating mechanism 15, the second transmission part 18 is supported by the second rotating mechanism 16, the temperature of cleaning liquid is heated by the heater 27, when the driving mechanism 19 drives the first rotating mechanism 15 to rotate, the first rotating mechanism 15 drives the first transmission part 17 to rotate, so that the oiling roller A rotates, the second transmission part 18 arranged on the shaft head C at the other end also rotates, and the second transmission part 18 drives the second rotating mechanism 16 to rotate. The ultrasonic generator 20 works to disperse and strip the silicone oil, the second motor 23 drives the screw rod 24 to rotate, and the screw rod 24 drives the nut 25 to move linearly. The nut 25 drives the brush 22 to move linearly, and controls the second motor 23 to rotate positively and negatively, so that the brush 22 reciprocates, the brush 22 cleans solid residues loosened by ultrasonic vibration, and the physical cleaning efficiency is improved. And cleaning is carried out according to set time, after the cleaning time is up, the ultrasonic generator 20 stops working, heating is stopped, temperature is reduced, and water is drained. And finishing one round of cleaning.

Example 2

The present embodiment differs from embodiment 1 in that:

the silicone oil bonding layer 1 consists of 58 parts of PET big bright slices and 42 parts of PET master batch; the film supporting layer 2 consists of 92 parts of PET high gloss material and 8 parts of PET anti-reflection master batch; the auxiliary rolling layer consists of 53 parts of PET big gloss material and 47 parts of PET silicon master batch; the silicon oil layer consists of 83 parts of main agent, 3 parts of cross-linking agent, 12 parts of catalyst and 2 parts of anchoring agent.

Longitudinally pulling: the draw ratio of the longitudinal drawing was 3.3 times and the drawing temperature was 90 ℃, and then the drawing was cooled with a cooling roll group at 27 ℃.

Transversely pulling: the preheating temperature of the transverse stretching machine was 115 ℃, the temperature during transverse stretching was 110 ℃, the stretching ratio was 3.8 times, and then the stretched film was heat-set while being relaxed in the width direction, the heat-set temperature was 235 ℃, the time was 13s, and the relaxation rate was 3%.

Example 3

The present embodiment differs from embodiment 1 in that:

the silicone oil bonding layer 1 consists of 56 parts of PET big bright slices and 44 parts of PET master batch; the film supporting layer 2 consists of 93 parts of PET high gloss material and 7 parts of PET anti-reflection master batch; the auxiliary rolling layer consists of 54 parts of PET big gloss material and 46 parts of PET silicon master batch; the silicon oil layer consists of 84 parts of main agent, 2 parts of cross-linking agent, 13 parts of catalyst and 1 part of anchoring agent.

Longitudinally pulling: the draw ratio of the longitudinal drawing was 3.4 times and the drawing temperature was 93 ℃, and then the drawing was cooled with a 35 ℃ cooling roller group.

Transversely pulling: the transverse stretcher was preheated at 112 ℃ and transversely stretched at 109 ℃ at a stretch ratio of 4.0 times, and the stretched film was heat-set while being relaxed in the width direction at a heat-set temperature of 237 ℃ for 14 seconds at a relaxation ratio of 3.3%.

Example 4

The present embodiment differs from embodiment 1 in that:

the silicone oil bonding layer 1 consists of 62 parts of PET big bright slices and 38 parts of PET master batch; the film supporting layer 2 consists of 94 parts of PET high gloss material and 5 parts of PET anti-reflection master batch; the auxiliary rolling layer consists of 55 parts of PET big gloss material and 45 parts of PET silicon master batch; the silicon oil layer consists of 85 parts of main agent, 3 parts of cross-linking agent, 10 parts of catalyst and 2 parts of anchoring agent.

Longitudinally pulling: the draw ratio of the longitudinal drawing was 3.5 times and the drawing temperature was 95 ℃, and then the resultant was cooled with a cooling roll group at 31 ℃.

Transversely pulling: the preheating temperature of the transverse stretching machine was 108 ℃, the temperature during transverse stretching was 113 ℃, the stretching ratio was 4.1 times, and then the stretched film was heat-set while being relaxed in the width direction, the heat-set temperature was 240 ℃, the time was 11 seconds, and the relaxation rate was 4.2%.

Example 5

The present embodiment differs from embodiment 1 in that:

the silicone oil bonding layer 1 consists of 57 parts of PET big bright chips and 43 parts of PET master batch; the film supporting layer 2 consists of 94 parts of PET high gloss material and 5 parts of PET anti-reflection master batch; the auxiliary rolling layer consists of 51 parts of PET big gloss material and 49 parts of PET silicon master batch; the silicon oil layer consists of 84 parts of main agent, 2 parts of cross-linking agent, 12 parts of catalyst and 2 parts of anchoring agent.

Longitudinally pulling: the draw ratio of the longitudinal drawing was 3.7 times and the drawing temperature was 98 ℃, and then the resultant was cooled with a cooling roll set at 32 ℃.

Transversely pulling: the preheating temperature of the transverse stretching machine was 117 ℃, the temperature during transverse stretching was 120 ℃, the stretching ratio was 4.3 times, and then the stretched film was heat-set while being relaxed in the width direction, the heat-set temperature was 245 ℃, the time was 15s, and the relaxation rate was 5%.