A production control device for a solventless adhesive for medical packaging composite films

Abstract

The utility model provides a kind of production control device of solventless adhesive for medical packaging composite film, it is related to adhesive storage technical field, including support frame, the upside of support frame is provided with low-temperature storage component, the low-temperature storage component includes the storage outer tank of fixed connection on the upside of support frame, the top of storage outer tank is connected with glue pipe, the inside of storage outer tank is provided with the storage inner tank for storing adhesive, refrigeration outer pipe for refrigeration is arranged between the storage outer tank and storage inner tank, the right side of storage outer tank is provided with mixed preheating component, by the flow of low-temperature nitrogen gas inside refrigeration outer pipe, the heat in storage inner tank can be quickly taken away, to carry out cooling treatment to the glue in the inside of storage inner tank, while by the heat preservation layer of polyurethane foaming glue material, reduce the transmission of external heat to storage inner tank, maintain the low-temperature environment of glue in the inside of storage inner tank, ensure that glue keeps stable performance in longer time.

Description

Technical Field

[0001] This utility model relates to the field of adhesive preservation technology, and in particular to a production control device for solvent-free adhesives used in medical packaging composite films. Background Technology

[0002] Solvent-free lamination technology is gradually becoming a new favorite among flexible packaging companies due to its superior characteristics such as zero VOC emissions, high efficiency, low energy consumption, and low adhesive application rate. The principle is that two types of adhesives, A and B, reach a preset temperature under the action of the heating system, and then enter the mixing tube through their respective glue delivery tubes. The control panel then uses the precise control of the motor and glue delivery valve according to density or volume instructions to achieve full mixing of adhesives A and B, thereby obtaining the required solvent-free adhesive, which is ready for subsequent coating and lamination processes.

[0003] In the production of composite films, due to deviations in product planning, product development, and changes in adhesive type, the amount of adhesive prepared often exceeds the usage amount. The adhesive needs to be stored for a certain period of time. However, the existing AB mixed adhesive can generally only be stored for 8 hours. If it exceeds 8 hours, the adhesive will become ineffective and unusable, resulting in serious waste of adhesive.

[0004] Therefore, we provide a production control device for solvent-free adhesives used in medical packaging composite films to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a production control device for solvent-free adhesives used in medical packaging composite films, aiming to solve the problems mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A production control device for solvent-free adhesives used in medical packaging composite films includes a support frame. A low-temperature storage assembly is disposed on the upper side of the support frame. The low-temperature storage assembly includes an outer storage tank fixedly connected to the upper side of the support frame. An adhesive inlet pipe is connected to the top of the outer storage tank. An inner storage tank for storing the adhesive is disposed inside the outer storage tank. A cooling outer pipe for cooling is disposed between the outer storage tank and the inner storage tank. A mixing and preheating assembly is disposed on the right side of the outer storage tank. The mixing and preheating assembly includes a preheating tank disposed on the right side of the outer storage tank.

[0007] There is a gap between the inner storage tank and the outer storage tank, the outer refrigeration pipe is attached to the outer wall of the inner storage tank, and the outer refrigeration pipe is a "U"-shaped circulation pipe.

[0008] The inner wall of the storage tank is provided with an insulation layer, which is made of polyurethane foam.

[0009] The storage tank has a refrigeration inner tube installed at its center. The refrigeration inner tube has a spiral structure, and both the refrigeration inner tube and the refrigeration outer tube are filled with flowing low-temperature nitrogen gas.

[0010] The bottom of the storage tank is provided with a glue delivery pipe that communicates with the preheating tank. The top of the preheating tank is equipped with a top cover. A drive motor is installed at the center of the top of the top cover. A stirring blade is installed at the center of the bottom of the top cover. The stirring blade is connected to the output end of the drive motor.

[0011] An electric heating tube is installed inside the wall of the preheating tank. The electric heating tube is annular and wrapped inside the wall of the preheating tank. A controller is provided at the right end of the preheating tank.

[0012] The inner wall surface of the preheating tank is provided with heat-conducting strips, which are in the form of an outwardly convex annular structure. A glue outlet pipe is installed at the bottom of the preheating tank.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By incorporating a low-temperature storage component, the mixed adhesive is injected into the inner storage tank. Low-temperature nitrogen flowing through the outer cooling pipe quickly removes heat from the inner tank, thus cooling the adhesive. Simultaneously, the polyurethane foam insulation layer reduces heat transfer from the outside to the inner tank, maintaining a low-temperature environment and ensuring stable performance over a longer period. While the outer cooling pipe cools the adhesive, the low-temperature nitrogen inside the inner cooling pipe also cools the adhesive from the center, preventing the temperature from failing to drop quickly due to excessive adhesive volume. This improves cooling efficiency, allowing the adhesive to reach and maintain a suitable low-temperature storage state more quickly. Furthermore, the spiral structure of the inner cooling pipe increases the contact area with the adhesive, resulting in more thorough heat exchange, enhanced cooling effect, extended shelf life, and reduced waste due to adhesive failure.

[0014] 2. By setting up a mixing and preheating component, when the adhesive needs to be reused, it is transported to the preheating tank. The controller activates the electric heating element to heat the adhesive, and simultaneously starts the drive motor to rotate the stirring blades, stirring the adhesive in the preheating tank. This ensures more uniform heating of the adhesive during preheating, preventing localized overheating or underheating, and avoiding stratification of the adhesive after prolonged storage, thus ensuring stable adhesive performance. During heating, the heat-conducting strip can quickly transfer the heat generated by the electric heating element to the adhesive in the preheating tank, allowing the adhesive to heat up to the required temperature more quickly. Once the adhesive reaches the appropriate temperature, it can be transported to subsequent processes for use through the dispensing pipe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the low-temperature storage component structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the hybrid preheating component of this utility model.

[0018] Figure 4 This is a schematic diagram of the combined structure of the preheating tank, electric heating tube, and heat-conducting strip of this utility model.

[0019] Labels in the diagram: 1. Support frame; 2. Low-temperature storage assembly; 201. Outer storage tank; 202. Inlet pipe; 203. Inner storage tank; 204. Outer cooling pipe; 205. Insulation layer; 206. Inner cooling pipe; 207. Glue delivery pipe; 3. Mixing and preheating assembly; 301. Preheating tank; 302. Top cover; 303. Drive motor; 304. Stirring blade; 305. Electric heating element; 306. Controller; 307. Heat conduction strip; 308. Glue outlet pipe. Detailed Implementation

[0020] Please see Figure 1-4 As shown, this utility model provides a production control device for solvent-free adhesives used in medical packaging composite films, including a support frame 1. A low-temperature storage component 2 is provided on the upper side of the support frame 1. The low-temperature storage component 2 includes an outer storage tank 201 fixedly connected to the upper side of the support frame 1. An adhesive inlet pipe 202 is connected to the top of the outer storage tank 201. An inner storage tank 203 for storing adhesives is provided inside the outer storage tank 201. A cooling outer pipe 204 for cooling is provided between the outer storage tank 201 and the inner storage tank 203. A mixing and preheating component 3 is provided on the right side of the outer storage tank 201. The mixing and preheating component 3 includes a preheating tank 301 provided on the right side of the outer storage tank 201.

[0021] Furthermore, there is a gap between the inner storage tank 203 and the outer storage tank 201. The cooling outer pipe 204 is attached to the outer wall of the inner storage tank 203. The cooling outer pipe 204 is a "U"-shaped circulation pipe. After the mixed glue is injected into the inner storage tank 203, the low-temperature nitrogen gas flowing inside the cooling outer pipe 204 can quickly remove the heat from the outer wall of the inner storage tank 203, thereby cooling the glue inside the inner storage tank 203 and keeping it in a low-temperature storage state, extending the storage time of the glue and reducing glue waste.

[0022] Furthermore, a cooling inner tube 206 is installed at the center of the storage inner tank 203. The cooling inner tube 206 has a spiral structure. Both the cooling inner tube 206 and the cooling outer tube 204 are filled with flowing low-temperature nitrogen gas. While the cooling outer tube 204 is cooling down, the low-temperature nitrogen gas inside the cooling inner tube 206 can also cool the glue from the center of the storage inner tank 203. This avoids the situation where the temperature at the center cannot drop quickly due to a large amount of glue, thereby improving the cooling efficiency and enabling the glue to reach and maintain a suitable low-temperature storage state more quickly. Moreover, the spiral structure of the cooling inner tube 206 increases the contact area with the glue, making heat exchange more complete and improving the cooling effect.

[0023] Furthermore, the inner wall of the outer storage tank 201 is provided with a heat insulation layer 205, which is made of polyurethane foam. Through the heat insulation layer 205, the transfer of external heat to the inner storage tank 203 is reduced, maintaining the low temperature environment of the adhesive inside the inner storage tank 203 and ensuring that the adhesive maintains stable performance for a longer period of time.

[0024] Furthermore, the bottom of the storage outer tank 201 is provided with a glue delivery pipe 207 that communicates with the preheating tank 301. The top of the preheating tank 301 is equipped with a top cover 302, and a drive motor 303 is installed at the center of the top of the top cover 302. A stirring blade 304 is installed at the center of the bottom of the top cover 302. The stirring blade 304 is connected to the output end of the drive motor 303. When the glue needs to be used again, the glue in the storage inner tank 203 is transported to the preheating tank 301 through the glue delivery pipe 207. Then, the drive motor 303 is started, and the drive motor 303 drives the stirring blade 304 to rotate. The stirring blade 304 stirs the glue in the preheating tank 301, so that the glue is heated more evenly during the preheating process, avoiding local overheating or undercooling, and preventing the glue from separating after a long period of storage, thus ensuring the stability of the glue's performance.

[0025] Furthermore, a heat-conducting strip 307 is provided on the inner wall surface of the preheating tank 301. The heat-conducting strip 307 has an outwardly convex annular structure. A glue dispensing pipe 308 is installed at the bottom of the preheating tank 301. During heating, the heat-conducting strip 307 can quickly transfer the heat generated by the electric heating tube 305 to the glue in the preheating tank 301. The outwardly convex annular structure increases the contact area between the heat-conducting strip 307 and the glue, further improving the heat transfer efficiency and enabling the glue to heat up to the required temperature more quickly. When the glue is heated to the appropriate temperature, it can be transported to the subsequent process for use through the glue dispensing pipe 308.

[0026] Furthermore, an electric heating tube 305 is installed inside the preheating tank 301. The electric heating tube 305 is annular and wrapped inside the preheating tank 301. A controller 306 is provided at the right end of the preheating tank 301. After the glue enters the preheating tank 301, the controller 306 starts the electric heating tube 305 to heat the glue, gradually raising the glue temperature to a suitable operating temperature to prepare it for subsequent use. The annular electric heating tube 305 can heat the glue in the preheating tank 301 from all directions, making the glue heated evenly and improving the uniformity of glue heating.

[0027] In use, the mixed adhesive is injected into the storage tank 203. Then, through an external device, low-temperature nitrogen gas is introduced into the cooling outer pipe 204 and the cooling inner pipe 206, rapidly carrying away heat from the adhesive and quickly cooling it in the storage tank 203. Simultaneously, the insulation layer 205 reduces external heat transfer, maintaining the low-temperature environment within the storage tank 203. When the adhesive needs to be used again, it is transported to the preheating tank 301 through the adhesive delivery pipe 207. Then, the controller 306 activates the electric heating element 305 to preheat the adhesive in the preheating tank 301. During the heating process, the heat-conducting strip 307 quickly transfers heat to the adhesive, causing it to rapidly heat up to a suitable temperature. Simultaneously, the drive motor 303 drives the stirring blade 304 to rotate within the preheating tank 301, stirring the adhesive to ensure more uniform heating during preheating and preventing localized overheating or underheating. This also prevents the adhesive from separating after prolonged storage, ensuring stable performance. Finally, the adhesive is delivered to subsequent processes via the dispensing pipe 308. This completes the process of using a production control device for solvent-free adhesives used in medical packaging composite films.

Claims

1. A production control device for solvent-free adhesives used in medical packaging composite films, characterized in that: The system includes a support frame (1), a low-temperature storage assembly (2) is provided on the upper side of the support frame (1), the low-temperature storage assembly (2) includes an outer storage tank (201) fixedly connected to the upper side of the support frame (1), an adhesive inlet pipe (202) is connected to the top of the outer storage tank (201), an inner storage tank (203) for storing adhesive is provided on the inner side of the outer storage tank (201), a cooling outer pipe (204) for cooling is provided between the outer storage tank (201) and the inner storage tank (203), and a mixing preheating assembly (3) is provided on the right side of the outer storage tank (201), the mixing preheating assembly (3) includes a preheating tank (301) provided on the right side of the outer storage tank (201).

2. The production control device for a solvent-free adhesive for medical packaging composite film according to claim 1, characterized in that, There is a gap between the inner storage tank (203) and the outer storage tank (201), and the outer cooling pipe (204) is attached to the outer wall of the inner storage tank (203). The outer cooling pipe (204) is a "U"-shaped circulation pipe.

3. The production control device for a solvent-free adhesive for medical packaging composite film according to claim 1, characterized in that, The inner wall of the storage tank (201) is provided with a heat insulation layer (205), which is made of polyurethane foam.

4. The production control device for a solvent-free adhesive for medical packaging composite film according to claim 1, characterized in that, The storage inner tank (203) is equipped with a refrigeration inner tube (206) at its center. The refrigeration inner tube (206) has a spiral structure, and both the refrigeration inner tube (206) and the refrigeration outer tube (204) are filled with flowing low-temperature nitrogen gas.

5. The production control device for a solvent-free adhesive for medical packaging composite film according to claim 1, characterized in that, The bottom end of the storage tank (201) is provided with a glue delivery pipe (207) that communicates with the preheating tank (301). The top end of the preheating tank (301) is equipped with a top cover (302). A drive motor (303) is installed at the center of the top end of the top cover (302). A stirring blade (304) is installed at the center of the bottom end of the top cover (302). The stirring blade (304) is connected to the output end of the drive motor (303).

6. The production control device for a solvent-free adhesive for medical packaging composite film according to claim 1, characterized in that, An electric heating tube (305) is installed inside the tank wall of the preheating tank (301). The electric heating tube (305) is annular and wrapped inside the tank wall of the preheating tank (301). A controller (306) is provided at the right end of the preheating tank (301).

7. The production control device for a solvent-free adhesive for medical packaging composite film according to claim 1, characterized in that, The inner wall surface of the preheating tank (301) is provided with a heat-conducting strip (307), which has an outwardly convex annular structure. The bottom end of the preheating tank (301) is equipped with a glue outlet pipe (308).

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