A continuous production system and method for a pressure-sensitive adhesive protective film

Abstract

The present invention discloses a continuous production system and method for a pressure-sensitive adhesive protective film, and belongs to the field of surface coating technology. The continuous production system for a pressure-sensitive adhesive protective film of the present invention comprises: a reeling device, a tension regulating device, a coating device, a drying device, a supporting device, a detecting device, a reeling device, a first control device, and a second control device. The present invention selects a target natural frequency according to a target drying frequency, and adjusts the position number of the second fulcrum according to the target natural frequency. If the position data exceeds the first interval, the tension of the non-adhesive film is adjusted. If the tension exceeds the second interval, the target natural frequency is reselected, and the tension variable of the non-adhesive film is calculated. The present invention adjusts the position data of the second fulcrum and the tension of the non-adhesive film, and then adjusts the natural frequency of the non-adhesive film drying section, so that the natural frequency of the drying section is far away from the drying frequency, thereby avoiding resonance between the protective film and the drying hot air, and improving the stability of the coating.

Description

Technical Field

[0001] The present invention relates to the technical field of surface coating, and in particular to a continuous production system and method of a pressure-sensitive adhesive protective film. Background Art

[0002] Pressure-sensitive adhesives are sensitive to the pressure of the coating roller. During the coating process of the pressure-sensitive adhesive protective film, in order to reduce the pressure on the liquid pressure-sensitive adhesive, no pressure roller is set between the coating head and the drying box, that is, the protective film substrate is in a free state. In this range, vibration will reduce the coating quality of the protective film. Japanese Patent Publication No. JP2008060348A discloses a coating device that effectively prevents resonance caused by external vibration. The coating device loads a resonance prevention component into the square tube recess of the platform and the slit nozzle moving mechanism. When the square tube is loaded with an anti-resonance component, the natural frequency of the base changes so that external vibration does not cause resonance. This solution avoids resonance by changing the natural frequency of the base, and the vibration of the substrate still exists. In addition, Chinese Patent Publication No. CN118847440A discloses a vibration-free coating device and its control method. This method combines PID control to reduce the vibration generated during the coating process. The hot air in the drying box works periodically, and the vibration of the hot air inevitably causes the protective film to follow the vibration. In view of this, in order to improve the coating stability, it is necessary to reduce the forced vibration of the protective film with hot air in combination with the coating state of the protective film. Summary of the Invention

[0003] In response to the above problems, the present invention provides a continuous production system and method for a pressure-sensitive adhesive protective film, which reduces the vibration of the protective film and improves the stability of the coating by using the position data of the protective film fulcrum and the tension of the protective film.

[0004] The invention objectives of this application can be achieved through the following technical means:

[0005] A continuous production system for a pressure-sensitive adhesive protective film, comprising:

[0006] an unwinding device configured to unwind the adhesive-free film at an unwinding speed;

[0007] a tension adjustment device configured to adjust the tension of the adhesive-free film;

[0008] A coating device is configured to coat a pressure-sensitive medium on the adhesive-free film to form a protective film, and the coating device provides a first support point for the protective film;

[0009] A drying device configured to output a drying medium according to a drying frequency, wherein the drying medium dries the pressure-sensitive medium;

[0010] a supporting device configured to provide a second fulcrum for the protective film;

[0011] a detection device configured to detect status data of the pressure-sensitive medium;

[0012] a winding device configured to collect the protective film at a winding speed;

[0013] a first control device configured to calculate a drying speed according to a winding speed, and to calculate a target drying frequency according to the drying speed and the state data;

[0014] The second control device is configured to adjust the position data of the second fulcrum and the tension of the non-adhesive film according to the target drying frequency, wherein:

[0015] The first control device calculates the air supply variable according to the drying speed and the state data, and calculates the target drying frequency based on the air supply variable.

[0016] The second control device selects the target natural frequency according to the target drying frequency, adjusts the position data of the second fulcrum according to the target natural frequency, adjusts the tension of the non-adhesive film if the position data exceeds the first interval, and reselects the target natural frequency if the tension exceeds the second interval, calculates the tension variable of the non-adhesive film, and adjusts the unwinding speed according to the tension variable.

[0017] In the present invention, the unwinding device has an infrared sensor unit for measuring the storage radius of the non-adhesive film, and the rewinding device has an infrared sensor unit for measuring the storage radius of the protective film.

[0018] In the present invention, the coating device includes a glue barrel, an upper mold, and a lower mold. The pressure-sensitive medium in the glue barrel flows into the non-glue film through the slit between the upper mold and the mold, and the midpoint of the slit is the first fulcrum.

[0019] In the present invention, the drying device has multiple groups of drying cylinders arranged at intervals, and each drying cylinder has multiple groups of air inlets and air outlets.

[0020] In the present invention, the state data is the medium humidity, the first control device calculates the drying speed according to the winding speed, calculates the water evaporation demand according to the drying speed and the state data, and then calculates the air supply variable.

[0021] In the present invention, the protective film between the first fulcrum and the second fulcrum is the drying section. The target span of the drying section is calculated according to the target natural frequency, and the position data of the second fulcrum is adjusted until the length of the drying section is equal to the target span.

[0022] In the present invention, if the position data exceeds the first interval, the target tension is calculated according to the target natural frequency, and the tension without the adhesive film is adjusted to the target tension.

[0023] In the present invention, the tension adjustment device includes a first reversing roller, a second reversing roller, a tension roller, a telescope and a cantilever. The non-glue substrate passes through the first reversing roller, the tension roller and the second reversing roller in sequence. The telescope controls the tension of the non-glue film through the adjustment angle of the cantilever.

[0024] In the present invention, the tensioning variable of the non-adhesive film is calculated according to the adjustment angle, and the unwinding speed is adjusted according to the tensioning variable.

[0025] A continuous production method according to the continuous production system of the pressure-sensitive adhesive protective film comprises the following steps:

[0026] Step 1: Unwind the film at the unwinding speed;

[0027] Step 2: Adjust the tension of the non-adhesive film;

[0028] Step 3: Coat the non-adhesive film with a pressure-sensitive medium to form a protective film;

[0029] Step 4: Outputting the drying medium according to the drying frequency, and drying the pressure-sensitive medium by the drying medium;

[0030] Step 5: The protective film passes through the second supporting point to detect the status data of the pressure-sensitive medium;

[0031] Step 6: Collect the protective film according to the winding speed;

[0032] Step 7: Calculate the drying speed based on the winding speed, and adjust the drying frequency based on the drying speed and status data;

[0033] Step 8: Adjust the position data of the second fulcrum and the tension of the non-adhesive film according to the drying frequency, and return to step 1.

[0034] The present invention provides a continuous production system and method for pressure-sensitive adhesive protective film, the beneficial effects of which are as follows: a drying device outputs dry hot air to a non-adhesive drying section according to a drying frequency, and the drying frequency varies with the winding speed. The present invention adjusts the position data of the second fulcrum and the tension of the non-adhesive film, thereby adjusting the natural frequency of the non-adhesive drying section, so that the natural frequency of the drying section is away from the drying frequency, thereby preventing resonance between the protective film and the dry hot air and improving coating stability. Furthermore, the present invention adjusts the unwinding speed according to the tension, preventing changes in the tension from affecting the coating production speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of a continuous production system for a pressure-sensitive adhesive protective film according to the present invention;

[0036] Figure 2 This is a partial view of the continuous production system of the present invention, mainly showing the movement direction of the protective film;

[0037] Figure 3 Another partial view of the continuous production system of the present invention, mainly showing the vibration of the protective film;

[0038] Figure 4 is a schematic diagram of the unwinding device of the present invention;

[0039] Figure 5 A partial view of the coating device of the present invention;

[0040] Figure 6 It is a partial view of the drying device of the present invention;

[0041] Figure 7 is a schematic diagram of a winding device of the present invention;

[0042] Figure 8 It is a force diagram of the tension adjustment device of the present invention;

[0043] Figure 9 Schematic diagram of the geometric relationship of the tension adjustment device of the present invention;

[0044] Figure 10 The present invention provides a flow chart of a continuous production method of a continuous production system for a pressure-sensitive adhesive protective film.

[0045] Figure markings in the accompanying drawings: protective film 01, non-adhesive film 02, pressure-sensitive medium 03, unwinding device 10, tension adjusting device 20, first reversing roller 21, second reversing roller 22, tension roller 23, telescope 24, cantilever 25, coating device 30, glue barrel 31, upper mold 32, lower mold 33, slit 34, drying device 40, drying cylinder 41, air inlet 42, air outlet 43, supporting device 50, detection device 60, winding device 70, first control device 80, second control device 90. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention. Example 1

[0047] like Figures 1 to 7In the continuous production system of a pressure-sensitive adhesive protective film of the present invention, the pressure-sensitive medium is affected by the frequency of hot air during the drying process, and the pressure-sensitive adhesive protective film is forced to vibrate. The present invention uses a first control device and a second control device to avoid resonance between the protective film and the drying hot air, thereby improving the stability of the coating. The continuous production system includes: a reeling device 10, a tension adjustment device 20, a coating device 30, a drying device 40, a supporting device 50, a detection device 60, a reeling device 70, a first control device 80, and a second control device 90. The pressure-sensitive adhesive protective film 01 of the present invention is composed of a non-adhesive film 02 and a pressure-sensitive medium 03 coated on the non-adhesive film. The non-adhesive film 02 is, for example, polyvinyl chloride or polyurethane, and the pressure-sensitive medium 03 is, for example, acrylic glue or UV curing glue. The continuous production system of the present invention coats the pressure-sensitive medium 03 on the non-adhesive film 02 and dries it to form a protective film 01.

[0048] Reference Figure 4 The unwinding device 10 is configured to unwind the uncoiling film at a specific uncoiling speed. As the uncoiling device 10 operates, the amount of uncoiling film in the device gradually decreases. The uncoiling device 10 includes an infrared sensor unit for measuring the storage radius of the uncoiling film. During operation, the linear velocity of the uncoiling film can be predicted based on the real-time storage radius and uncoiling speed.

[0049] The tension adjustment device 20 is configured to adjust the tension of the non-adhesive film. It comprises a first reversing roller 21, a second reversing roller 22, a tension roller 23, a retractor 24, and a cantilever 25. The non-adhesive film passes through the first reversing roller 21, the tension roller 23, and the second reversing roller 22 in sequence. The retractor 24 controls the tension of the non-adhesive film by adjusting the angle of the cantilever 25. In further embodiments, the tension variable of the non-adhesive film changes as the adjustment angle changes. The tension variable of the non-adhesive film is calculated based on the adjustment angle, and the unwinding speed is adjusted accordingly to prevent changes in tension from affecting coating stability.

[0050] like Figure 5 The coating device 30 is configured to coat the non-adhesive film with a pressure-sensitive medium to form a protective film. This coating device provides the first support for the protective film. The coating device 30 utilizes the slot coating principle and includes a coating drum 31, an upper mold 32, and a lower mold 33. The pressure-sensitive medium in the coating drum flows into the non-adhesive film through a slot 34 between the upper and lower molds. The midpoint of the slot 34 serves as the first support.

[0051] The drying device 40 is configured to output a drying medium according to a drying frequency, and the drying medium dries the pressure-sensitive medium. Figure 6 The drying device comprises a plurality of drying cylinders 41 arranged at intervals, each drying cylinder having a plurality of air inlets 42 and air outlets 43. Preferably, the drying cylinder is an axial flow fan, and the change of the drying frequency changes the amplitude of the protective film.

[0052] The support device 50 is configured to provide a second fulcrum for the protective film. The support device, for example, comprises two sets of rollers. The protective film between the midpoint of the slit 34 and the support device 50 is in a free state and can be simplified as a simply supported beam of length H. The protective film between the first and second fulcrums forms a drying section, which can be considered a preloaded Euler-Bernoulli beam. The natural frequency of the drying section of the protective film can be adjusted by adjusting the distance between the first and second fulcrums.

[0053] The detection device 60 is configured to detect status data of the pressure-sensitive medium. The status data is the humidity of the medium. The detection device 60 is, for example, a resistive humidity sensor, an infrared humidity sensor, etc.

[0054] Reference Figure 7 The reel 70 is configured to collect the protective film at a specific reeling speed. As the reel 70 operates, the protective film gradually accumulates within it. The reel 70 includes an infrared sensor for measuring the storage radius of the protective film. To ensure consistent coating, the reeling speed can be adjusted in real time based on the storage radius.

[0055] The first control device 80 is configured to calculate the drying speed based on the winding speed and the target drying frequency based on the drying speed and status data. Specifically, the first control device calculates the drying speed based on the winding speed, the water evaporation requirement based on the drying speed and status data, and then calculates the air supply variable. The target drying frequency is calculated based on this air supply variable. The drying device outputs hot dry air to the non-adhesive film drying section according to the drying frequency, ensuring that the current humidity of the pressure-sensitive media approaches the target humidity, thereby improving product quality.

[0056] The second control device 90 is configured to adjust the position data of the second fulcrum and the tension of the non-adhesive film based on the target drying frequency. Specifically, the second control device selects a target natural frequency based on the target drying frequency and adjusts the position data of the second fulcrum according to the target natural frequency. If the position data exceeds a first range, the tension of the non-adhesive film is adjusted. If the tension exceeds a second range, the target natural frequency is reselected. The present invention adjusts the position data of the second fulcrum and the tension of the non-adhesive film to adjust the natural frequency of the non-adhesive film drying section, thereby adjusting the natural frequency of the drying section away from the drying frequency and improving coating stability. Example 2

[0057] This embodiment further discloses a preferred method in which the first control device selects the drying frequency and the second control device adjusts the natural frequency of the protective film.

[0058] The drying speed is calculated based on the winding speed. The storage radius of the protective film on the winding device is R3, and the winding speed ω2 of the winding roller in the winding device corresponds to the linear speed v2=ω2R3 of the protective film.

[0059] The air supply variable is calculated based on the drying speed and state data. The state data is the current humidity w1 of the pressure-sensitive medium, and the water evaporation demand m=ρ1v2[w1 / (1-w1)-w0 / (1-w0)], where ρ1 is the linear density of the pressure-sensitive medium in the protective film (the mass of the pressure-sensitive medium per unit length of protective film, for example, 5 to 15 g / m), and w0 is the target humidity of the pressure-sensitive medium. The air supply variable Q1=m / [ρ2 / (C2-C1)], where ρ2 is the air density, for example, 1.0 kg / m 3 C1 is the absolute humidity of the air at the air inlet, usually 5-10 g / kg. C2 is the absolute humidity of the air at the air outlet, usually 20-40 g / kg.

[0060] The target drying frequency is calculated based on the air supply variable. Target drying frequency f1 = f0(Q1+Q0) / Q0. f0 is the current drying frequency, Q0 is the current air supply volume, for example, 1000m 3 / h.

[0061] Select the target natural frequency based on the target drying frequency. Calculate the minimum frequency adjustment f3 that satisfies |(f2+f3)-f1|≥0.2 f1. The target natural frequency is f2+f3, where f2 is the current natural frequency. Because the first-order natural frequency has the greatest impact on the vibration of the protective film, the natural frequency in this embodiment refers to the first-order natural frequency of the protective film drying stage.

[0062] Calculate the target span of the drying section according to the target natural frequency, and then adjust the position data of the second support point. Target natural frequency = f2 + f3 = ρ3 is the linear density of the unadhesive film, for example, 10 to 24 g / m. F is the target tension of the unadhesive film, and H is the target span of the drying section. Maintaining the tension constant, calculate the target span. Adjust the position of the second fulcrum until the drying section length equals the target span. This adjustment moves the first-order natural frequency of the drying section away from the target drying frequency, effectively reducing vibration.

[0063] If the position data exceeds the first interval, the target tension is calculated based on the target natural frequency. The first interval is the adjustment range of the second fulcrum. Since the support device is installed in a limited area, the position data of the second fulcrum is adjusted within the limited area. The first interval is, for example, 0.01 to 0.5 meters. Keeping the target span H unchanged, according to f2+f3= Calculate the target tension. Adjust the tension without the adhesive film to the target tension. The preferred adjustment method is as described in Example 3.

[0064] If the tension exceeds the second range, the tension without the film reaches its maximum value, and the target natural frequency is reselected. First, reselect f3 in the opposite direction and calculate the minimum frequency adjustment f3 that satisfies |(f2+f3)-f1|≥0.2f1, and if f2≥f1, f3≤0, and if f2<f1, f3>0. Then, adjust the position of the second fulcrum or the tension without the film based on the reselected target natural frequency.

[0065] The second range is the adjustment range of the tension, which can be, for example, 10 to 500 Newtons. Typically, the adhesive film is within the elastic deformation range. If the tension exceeds the second range, the excessive tension may cause plastic deformation of the adhesive film, resulting in irreversible damage. Therefore, this embodiment limits the tension to within the second range. Example 3

[0066] like Figures 8 and 9 This embodiment further discloses a preferred method for the second control device to adjust the unwinding speed based on the tensioning variable. This embodiment calculates the unwinding speed ω1(t+1) for period t+1 based on the current adjustment angle θ(t) for period t and the target adjustment angle θ(t+1) for period t+1. The period interval is set to τ. For convenience, let the target adjustment angle θ(t+1) = θ' and the current adjustment angle θ(t) = θ.

[0067] First, the expander controls the tension of the unbonded film by adjusting the cantilever's angle. By varying the expander's tension, the expander gradually adjusts the cantilever's angle until the unbonded film's tension reaches the target. Specifically, after achieving control of the target adjustment angle θ', the expander's tension changes. The expander's tension F2 is measured, and the target tension F1 is predicted. Based on the pulley force principle, the target tensions of the first and second reversing rollers are equal to the angle between the centerline of the tension adjustment device, both set to α1. The tension applied by the tension roller to the cantilever is 2F1cosα1. The expander and tension roller form a lever mechanism. Based on the cantilever's equilibrium relationship, sinα2(2cosα1F1)×L3=F2cosθ'×L4, the target tension F1 can be calculated, where L3 is the length between the tension roller hinge and the cantilever hinge, L4 is the length between the expander hinge and the cantilever hinge, and α2 is the tension roller's deflection angle.

[0068] The α1 and α2 of the present invention are gradually adjusted as the cantilever swings. In this embodiment, a calculation method for α1 and α2 is further provided. Figure 9 The angle between the foot of the tangent of the tension roller and the line connecting the first circle center is β1, the angle between the line connecting the first circle center and the perpendicular bisector is β2, and the angle between the perpendicular bisector and the center line is β3, α1=π / 2-(β1+β2+β3). Among them, β1=arccos(2R2 / L 12). The horizontal distance between the tension roller and the first reversing roller in the initial state is 2R2. When the current adjustment angle θ is set, the horizontal distance variable is sinθtanθL4, β2=arcsin[(2R2-sinθtanθL3) / L 12 ]. At the current adjustment angle θ, the vertical distance between the tension roller and the first reversing roller is L0+cosθtanθL4, β3=arctan[(sinθtanθL3) / (L0+cosθtanθL3)]. The angle between the center line and the horizontal axis is the deflection angle α2 of the tension roller. In the initial state, the deflection angle of the tension roller α2=0, α1=π / 2. Therefore, at the current adjustment angle θ, α2=π / 2-β3=π / 2-arctan[(sinθtanθL3) / (L0+cosθtanθL3)].

[0069] Then, the tension variable without the film is calculated. Specifically, the current adjustment angle θ is substituted into the functional relationship between the total tension and the adjustment angle to obtain the current total tension S0. The target adjustment angle θ' is substituted into the functional relationship between the total tension and the adjustment angle to obtain the target total tension S0'. The tension variable S1 = S0' - S0.

[0070] In this embodiment, the functional relationship between the total tension and the adjustment angle is further given. The current total tension S0 = L 11 -L0+L 21 -L0,L 11 is the tension between the first reversing roller and the tension roller, L 21 is the tension between the second reversing roller and the tension roller. In the initial state (the first adjustment angle is zero), the vertical distance between the first reversing roller and the tension roller is L0. The radius of the first reversing roller, the second reversing roller and the tension roller are all R2. , Among them, the distance between the center of the first reversing roller and the tension roller is , the distance between the center of the second reversing roller and the tension roller , L3 is the length between the hinge point of the tension roller and the hinge point of the cantilever, that is, the effective length of the cantilever.

[0071] That is, the functional relationship can be expressed as: for the current first adjustment angle θ, the current total tension Similarly, for the target first adjustment angle θ', the target total tension .

[0072] Finally, adjust the unwinding speed. The unwinding speed ω1(t+1) = v1(t+1) / R1. R1 is the storage radius of the unwinding roller. Specifically, the linear velocity of the unwinding roller in cycle t+1 is v1(t+1) = v1(t) + v', where v1(t) = ω1(t+1) R1. The tensioning speed v' = S1 / τ, where τ is the cycle interval. After adjusting the unwinding speed, the unwinding device provides the film at v1(t) while providing the tensioning variable at v'. This ensures that the linear velocity of the protective film in the drying device remains stable even if the tension variable changes. Example 4

[0073] Reference Figure 10 The present invention relates to a continuous production method for a pressure-sensitive adhesive protective film, comprising measuring the state data of the pressure-sensitive medium during period t, calculating the target drying frequency and target natural frequency during period t+1, and then adjusting the position data of the second fulcrum and the tension of the non-adhesive film. The coating method includes the following steps.

[0074] Initialize system parameters, preset the first tensioning amount and the second tensioning amount, and preset the cycle t=0.

[0075] Step 1: Unwind the film at the unwinding speed;

[0076] Step 2: Adjust the tension of the non-adhesive film;

[0077] Step 3: Coat the non-adhesive film with a pressure-sensitive medium to form a protective film;

[0078] Step 4: Outputting the drying medium according to the drying frequency, and drying the pressure-sensitive medium by the drying medium;

[0079] Step 5: The protective film passes through the second supporting point to detect the status data of the pressure-sensitive medium;

[0080] Step 6: Collect the protective film according to the winding speed;

[0081] Step 7: Calculate the drying speed based on the winding speed, and adjust the drying frequency based on the drying speed and status data;

[0082] Step 8: Adjust the position data of the second fulcrum and the tension of the non-adhesive film according to the drying frequency, t=t+1, and return to step 1.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A continuous production system for a pressure-sensitive adhesive protective film, characterized in that: include: an unwinding device configured to unwind the adhesive-free film at an unwinding speed; a tension adjustment device configured to adjust the tension of the adhesive-free film; A coating device is configured to coat a pressure-sensitive medium on the adhesive-free film to form a protective film, and the coating device provides a first support point for the protective film; A drying device configured to output a drying medium according to a drying frequency, wherein the drying medium dries the pressure-sensitive medium; a supporting device configured to provide a second fulcrum for the protective film; a detection device configured to detect status data of the pressure-sensitive medium; a winding device configured to collect the protective film at a winding speed; a first control device configured to calculate a drying speed according to a winding speed, and calculate a target drying frequency according to the drying speed and the state data; The second control device is configured to adjust the position data of the second fulcrum and the tension of the non-adhesive film according to the target drying frequency, wherein: The first control device calculates the air supply variable according to the drying speed and the state data, and calculates the target drying frequency based on the air supply variable. The second control device selects the target natural frequency according to the target drying frequency, adjusts the position data of the second fulcrum according to the target natural frequency, adjusts the tension of the non-adhesive film if the position data exceeds the first interval, and reselects the target natural frequency if the tension exceeds the second interval, calculates the tension variable of the non-adhesive film, and adjusts the unwinding speed according to the tension variable.

2. The continuous production system of a pressure-sensitive adhesive protective film according to claim 1, characterized in that: The unwinding device has an infrared sensor unit for measuring the storage radius of the non-adhesive film, and the rewinding device has an infrared sensor unit for measuring the storage radius of the protective film.

3. The continuous production system of a pressure-sensitive adhesive protective film according to claim 1, characterized in that: The coating device includes a glue barrel, an upper mold, and a lower mold. The pressure-sensitive medium in the glue barrel flows into the non-glue film through a slit between the upper mold and the mold, and the midpoint of the slit is a first fulcrum.

4. The continuous production system of a pressure-sensitive adhesive protective film according to claim 1, characterized in that: The drying device comprises a plurality of drying cylinders arranged at intervals, and each drying cylinder comprises a plurality of air inlets and air outlets.

5. The continuous production system of a pressure-sensitive adhesive protective film according to claim 1, characterized in that: The state data is the medium humidity. The first control device calculates the drying speed according to the winding speed, calculates the water evaporation demand according to the drying speed and the state data, and then calculates the air supply variable.

6. The continuous production system of a pressure-sensitive adhesive protective film according to claim 1, characterized in that: The protective film between the first fulcrum and the second fulcrum is the drying section. The target span of the drying section is calculated according to the target natural frequency, and the position data of the second fulcrum is adjusted until the length of the drying section is equal to the target span.

7. The continuous production system of a pressure-sensitive adhesive protective film according to claim 1, characterized in that: If the position data exceeds the first interval, the target tension is calculated according to the target natural frequency, and the tension without the adhesive film is adjusted to the target tension.

8. The continuous production system of a pressure-sensitive adhesive protective film according to claim 7, characterized in that: The tension adjustment device includes a first reversing roller, a second reversing roller, a tension roller, a telescope and a cantilever. The non-glue substrate passes through the first reversing roller, the tension roller and the second reversing roller in sequence. The telescope controls the tension of the non-glue film through the adjustment angle of the cantilever.

9. The continuous production system of a pressure-sensitive adhesive protective film according to claim 8, characterized in that: The tension variable of the non-adhesive film is calculated according to the adjustment angle, and the unwinding speed is adjusted according to the tension variable.

10. A continuous production method of the continuous production system of the pressure-sensitive adhesive protective film according to claim 1, characterized in that: The following steps are involved: Step 1: Unwind the film at the unwinding speed; Step 2: Adjust the tension of the non-adhesive film; Step 3: Coat the non-adhesive film with a pressure-sensitive medium to form a protective film; Step 4: Outputting the drying medium according to the drying frequency, and drying the pressure-sensitive medium by the drying medium; Step 5: The protective film passes through the second supporting point to detect the status data of the pressure-sensitive medium; Step 6: Collect the protective film according to the winding speed; Step 7: Calculate the drying speed based on the winding speed, and adjust the drying frequency based on the drying speed and status data; Step 8: Adjust the position data of the second fulcrum and the tension of the non-adhesive film according to the drying frequency, and return to step 1.

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