Hot melt adhesive coating machine

Abstract

The utility model discloses a hot melt adhesive coating machine, which comprises a release film input device, a non-woven fabric film input device, a coating device, a first traction device and a laminating device, the coating device is arranged between the release film input device and the laminating device and is used for coating a release film; the first traction device is arranged between the non-woven fabric film input device and the laminating device and is used for enabling a non-woven fabric film to have no tension when entering the laminating device, the cooling device is located at the downstream of the laminating device and comprises a first cooling roller and a second cooling roller, and the first cooling roller and the second cooling roller are located on the two sides of a patch respectively. The non-woven fabric tensioning device has the advantages that the structure is simple, the non-woven fabric tensioning force can be reasonably controlled, patch wrinkles are reduced, and the product quality and the production capacity are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of food and medicine packaging, in particular to a hot melt adhesive coating machine. Background Art

[0002] For many patients, the injection and oral drug intake methods may not meet their needs, so a third drug intake method has gradually emerged - transdermal patch administration. This method is to evenly coat the drug on the coil and then package it through the corresponding process. When the patient needs to use it, he only needs to apply it to the skin surface of the body. The drug is in close contact with the skin and is absorbed by the skin and then ingested by the patient to treat various diseases. The new transdermal preparations include orodispersible films, transdermal patches, gel patches, hot melt patches, etc. Compared with traditional rubber patches, it has the advantages of better drug release, less side effects, and easy use.

[0003] In order to meet the market demand for hot-melt adhesive patch drugs, pharmaceutical companies generally have stirring, coating, die-cutting, stacking, four-side sealing and inner packaging steps in the front-end process of hot-melt patches. Coating is a key link. The existing coating machine has poor control over the tension force of non-woven fabrics when coating. After the coating contacts the non-woven fabric, the non-woven fabric rebounds and causes wrinkles on the patch. The coating is not evenly distributed on the non-woven fabric, which affects the quality of the patch and production capacity. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a hot melt adhesive coating machine which has a simple structure, can reasonably control the tension of non-woven fabrics, reduce patch wrinkles, and improve product quality and production capacity.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A hot melt adhesive coating machine comprises a release film input device, a non-woven film input device, a coating device, a first traction device, a laminating device and a cooling device, wherein the coating device is arranged between the release film input device and the laminating device, and is used to apply coating to the release film, the first traction device is arranged between the non-woven film input device and the laminating device, and is used to make the non-woven film tension-free when entering the laminating device, the cooling device is located downstream of the laminating device, and the cooling device comprises a first cooling roller and a second cooling roller, and the first cooling roller and the second cooling roller are respectively located on both sides of the patch.

[0007] As a further improvement of the above technical solution:

[0008] The non-woven film input device includes a non-woven film unwinding mechanism, a first tension adjusting mechanism, a first tension detecting mechanism and a first deviation correcting mechanism. The non-woven film enters the laminating device after passing through the first tension adjusting mechanism, the first tension detecting mechanism, the first deviation correcting mechanism and the first traction device in sequence from the non-woven film unwinding mechanism.

[0009] The release film input device includes a release film unwinding mechanism, a second tension adjusting mechanism, a second tension detecting mechanism, a second deflection correcting mechanism and a static electricity removal mechanism. The release film passes through the second tension adjusting mechanism, the second tension detecting mechanism, the second deflection correcting mechanism, the static electricity removal mechanism and the coating device in sequence from the release film unwinding mechanism, and then enters the laminating device together with the non-woven fabric film.

[0010] The release film input device further includes a release film roll storage mechanism, which is used to store spare release film rolls. The non-woven fabric film input device further includes a non-woven fabric roll storage mechanism, which is used to store spare non-woven fabric rolls.

[0011] A film thickness detection device is provided between the coating device and the laminating device, and the film thickness detection device is used to detect the thickness of the release film coating.

[0012] A disqualified marking mechanism is provided on one side of the film thickness detection device, and the disqualified marking mechanism is used to mark the release film with disqualified coating thickness.

[0013] The film thickness detection device is electrically connected to the coating device.

[0014] The laminating device comprises a plurality of laminating rollers, each of which is respectively connected with a corresponding heating mechanism and a driving mechanism.

[0015] The hot melt adhesive coating machine also includes a third tension adjustment mechanism, a third tension detection mechanism, a third deviation correction mechanism, a second traction device and a slitting mechanism which are sequentially arranged downstream of the cooling device, and the slitting mechanism is correspondingly arranged with an upper winding mechanism and a lower winding mechanism.

[0016] A waste edge collecting mechanism is provided on one side of the slitting mechanism.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The coating method of the hot melt adhesive coating machine disclosed in the utility model is as follows: the release film is input from the release film input device, and the liquid medicine is coated by the coating device, while the non-woven film is input from the non-woven film input device, and the tension of the non-woven film is controlled by the first traction device, so that the tension of the non-woven film is 0 when the non-woven film enters the laminating device for the first lamination, and after the first lamination is completed, the non-woven film is superimposed on the side of the release film coated with the liquid medicine, and enters the laminating device again in a tension-free state for the second lamination, so that the two form a patch, and finally the patch enters the cooling device, and the front and back of the patch are fully cooled by the first cooling roller and the second cooling roller in turn. The non-woven film of the hot melt adhesive coating machine cuts off the non-woven tension by the first traction device before entering the laminating device, so that the non-woven film will not produce wrinkles due to rebound after contacting the liquid medicine, improves the uniformity of the liquid medicine on the non-woven film, and improves the quality of the patch and production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the hot melt adhesive coating machine of the utility model.

[0020] The numbers in the figure represent: 1. release film input device; 2. non-woven film input device; 3. coating device; 4. first traction device; 5. laminating device; 6. film thickness detection device; 61. unqualified marking mechanism; 7. cooling device; 71. first cooling roller; 72. second cooling roller; 8. third tension adjustment mechanism; 9. third tension detection mechanism; 10. third deviation correction mechanism; 11. release film unwinding mechanism; 12. second tension adjustment mechanism; 13. second tension detection mechanism; 14. second deviation correction mechanism; 15. static electricity removal mechanism; 16. release film roll storage mechanism; 17. second traction device; 18. slitting mechanism; 19. upper winding mechanism; 20. lower winding mechanism; 21. non-woven film unwinding mechanism; 22. first tension adjustment mechanism; 23. first tension detection mechanism; 24. first deviation correction mechanism; 25. non-woven film roll storage mechanism; 26. waste edge collection mechanism. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Figure 1 An embodiment of the utility model is shown. The hot melt adhesive coating machine of this embodiment includes a release film input device 1, a non-woven film input device 2, a coating device 3, a first traction device 4, a laminating device 5 and a cooling device 7. The coating device 3 is arranged between the release film input device 1 and the laminating device 5, and is used to apply coating to the release film. The first traction device 4 is arranged between the non-woven film input device 2 and the laminating device 5, and is used to make the non-woven film tension-free when entering the laminating device 5. The cooling device 7 is located downstream of the laminating device 5. The cooling device 7 includes a first cooling roller 71 and a second cooling roller 72. The first cooling roller 71 and the second cooling roller 72 are respectively located on both sides of the patch.

[0026] The coating method of the hot melt adhesive coating machine is as follows: the release film is input from the release film input device 1, and the liquid medicine is coated through the coating device 3. At the same time, the non-woven fabric film is input from the non-woven fabric film input device 2, and the tension of the non-woven fabric film is controlled by the first traction device 4, so that the tension of the non-woven fabric film is 0 when it enters the laminating device 5 for the first lamination. After the first lamination is completed, the non-woven fabric film is overlapped with the side of the release film coated with the liquid medicine, and enters the laminating device 5 again in a tension-free state for the second lamination to form a patch. Finally, the patch enters the cooling device 7, and the front and back sides of the patch are fully cooled by the first cooling roller 71 and the second cooling roller 72 in turn.

[0027] The non-woven fabric film of the hot melt adhesive coating machine is isolated from the non-woven fabric tension by the first traction device 4 before entering the laminating device 5, so that the non-woven fabric film will not produce wrinkles due to rebound after contacting the drug solution, thereby improving the uniformity of the distribution of the drug solution on the non-woven fabric film and improving the quality of the patch and production capacity.

[0028] In this embodiment, the non-woven film input device 2 includes a non-woven film unwinding mechanism 21, a first tension adjusting mechanism 22, a first tension detecting mechanism 23 and a first deviation correcting mechanism 24. The non-woven film starts from the non-woven film unwinding mechanism 21 and passes through the first tension adjusting mechanism 22, the first tension detecting mechanism 23, the first deviation correcting mechanism 24 and the first traction device 4 in sequence, and then enters the laminating device 5. The non-woven film unwinding mechanism 21 starts to release the non-woven film, and the tension of the non-woven film is adjusted by the first tension adjusting mechanism 22, and the tension is detected by the first tension detecting mechanism 23 to ensure the smooth input of the non-woven film, and then the non-woven film is corrected by the first deviation correcting mechanism 24 to keep the non-woven film in the correct position for transportation, and finally the tension of the non-woven film is adjusted to 0 by the first traction device 4, and then enters the laminating device 5 for the first lamination.

[0029] In this embodiment, the release film input device 1 includes a release film unwinding mechanism 11, a second tension adjusting mechanism 12, a second tension detecting mechanism 13, a second deflection correcting mechanism 14 and a static elimination mechanism 15. The release film passes through the second tension adjusting mechanism 12, the second tension detecting mechanism 13, the second deflection correcting mechanism 14, the static elimination mechanism 15 and the coating device 3 from the release film unwinding mechanism 11, and then enters the laminating device 5 together with the non-woven fabric film. The release film unwinding mechanism 11 starts to release the release film, and the release film is tensioned by the second tension adjusting mechanism 12, and the tension is detected by the second tension detecting mechanism 13 to ensure smooth input of the release film, and then the release film is deflected by the second deflection correcting mechanism 14 to keep the release film in the correct position for transportation, and after deflection correction, it enters the static elimination mechanism 15 for static elimination, and after static elimination, it enters the coating device 3 to coat the release film with liquid, and then it enters the laminating device 5 together with the non-woven fabric film for the second lamination.

[0030] In this embodiment, the release film input device 1 further includes a release film roll storage mechanism 16, which is used to store spare release film rolls, and the non-woven film input device 2 further includes a non-woven film roll storage mechanism 25, which is used to store spare non-woven rolls. The release film roll and the non-woven film roll are both in a one-for-one mode, which reduces downtime for loading and improves production efficiency.

[0031] In this embodiment, a film thickness detection device 6 is provided between the coating device 3 and the laminating device 5. The film thickness detection device 6 is used to detect the thickness of the release film coating. After the coating device 3 applies the coating to the release film, the coating thickness is firstly detected by the film thickness detection device 6, which is conducive to improving the product qualification rate.

[0032] In this embodiment, a non-conforming marking mechanism 61 is provided on one side of the film thickness detection device 6, and the non-conforming marking mechanism 61 is used to mark the release film with non-conforming coating thickness. The non-conforming marking mechanism 61 marks the release film with non-conforming thickness detected by the film thickness detection device 6, which is conducive to the subsequent removal of non-conforming products. Preferably, the non-conforming marking mechanism 61 is an inkjet mechanism.

[0033] In this embodiment, the film thickness detection device 6 is electrically connected to the coating device 3. The coating control of the coating device 3 is controlled by the detection result of the film thickness detection device 6, thereby improving the stability of the coating thickness.

[0034] In this embodiment, the laminating device 5 includes a plurality of laminating rollers, each of which is connected to a corresponding heating mechanism and a driving mechanism. When each laminating roller is connected to a driving mechanism, when wrinkles appear, the rolling speed of each laminating roller is controlled separately to reduce the generation of wrinkles and improve product quality; the laminating roller is connected to a heating mechanism, which can be set according to the temperature requirement of the patch.

[0035] In this embodiment, the hot melt adhesive coating machine further includes a third tension adjusting mechanism 8, a third tension detecting mechanism 9, a third deviation correcting mechanism 10, a second traction device 17 and a slitting mechanism 18 which are sequentially arranged downstream of the cooling device 7. The slitting mechanism 18 is correspondingly provided with an upper winding mechanism 19 and a lower winding mechanism 20. After the non-woven fabric film and the release film are bonded, they enter the cooling device 7 to cool to room temperature, and then sequentially pass through the third tension adjusting mechanism 8, the third tension detecting mechanism 9, the third deviation correcting mechanism 10, and the second traction device 17 to enter the slitting mechanism 18. After slitting, they are wound up by the upper winding mechanism 19 and the lower winding mechanism 20.

[0036] In this embodiment, a scrap edge collecting mechanism 26 is provided on one side of the slitting mechanism 18. The scrap edges generated by the slitting mechanism 18 are collected by the scrap edge collecting mechanism 26.

[0037] Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A hot melt adhesive coating machine, characterized in that: The invention comprises a release film input device (1), a non-woven film input device (2), a coating device (3), a first traction device (4), a laminating device (5) and a cooling device (7); the coating device (3) is arranged between the release film input device (1) and the laminating device (5) and is used to apply coating to the release film; the first traction device (4) is arranged between the non-woven film input device (2) and the laminating device (5) and is used to make the non-woven film tension-free when entering the laminating device (5); the cooling device (7) is located downstream of the laminating device (5); the cooling device (7) comprises a first cooling roller (71) and a second cooling roller (72); the first cooling roller (71) and the second cooling roller (72) are respectively located on both sides of the patch.

2. The hot melt adhesive coating machine according to claim 1, characterized in that: The non-woven film input device (2) comprises a non-woven film unwinding mechanism (21), a first tension adjusting mechanism (22), a first tension detecting mechanism (23) and a first deviation correcting mechanism (24); the non-woven film starts from the non-woven film unwinding mechanism (21), passes through the first tension adjusting mechanism (22), the first tension detecting mechanism (23), the first deviation correcting mechanism (24) and the first traction device (4) in sequence, and then enters the laminating device (5).

3. The hot melt adhesive coating machine according to claim 2, characterized in that: The release film input device (1) comprises a release film unwinding mechanism (11), a second tension adjusting mechanism (12), a second tension detecting mechanism (13), a second deflection correcting mechanism (14) and a static electricity removal mechanism (15); the release film passes through the second tension adjusting mechanism (12), the second tension detecting mechanism (13), the second deflection correcting mechanism (14), the static electricity removal mechanism (15) and the coating device (3) in sequence from the release film unwinding mechanism (11), and then enters the laminating device (5) together with the non-woven fabric film.

4. The hot melt adhesive coating machine according to claim 3, characterized in that: The release film input device (1) further comprises a release film roll storage mechanism (16), wherein the release film roll storage mechanism (16) is used to store spare release film rolls, and the non-woven fabric film input device (2) further comprises a non-woven fabric film roll storage mechanism (25), wherein the non-woven fabric film roll storage mechanism (25) is used to store spare non-woven fabric rolls.

5. The hot melt adhesive coating machine according to claim 3, characterized in that: A film thickness detection device (6) is provided between the coating device (3) and the laminating device (5), and the film thickness detection device (6) is used to detect the thickness of the release film coating.

6. The hot melt adhesive coating machine according to claim 5, characterized in that: A non-conforming marking mechanism (61) is provided on one side of the film thickness detection device (6), and the non-conforming marking mechanism (61) is used to mark release films with non-conforming coating thickness.

7. The hot melt adhesive coating machine according to claim 5, characterized in that: The film thickness detection device (6) is electrically connected to the coating device (3).

8. The hot melt adhesive coating machine according to any one of claims 1 to 7, characterized in that: The laminating device (5) comprises a plurality of laminating rollers, each of which is connected to a corresponding heating mechanism and a driving mechanism.

9. The hot melt adhesive coating machine according to any one of claims 1 to 7, characterized in that: The hot melt adhesive coating machine further comprises a third tension adjusting mechanism (8), a third tension detecting mechanism (9), a third deviation correcting mechanism (10), a second traction device (17) and a slitting mechanism (18) which are sequentially arranged downstream of the cooling device (7); the slitting mechanism (18) is correspondingly provided with an upper winding mechanism (19) and a lower winding mechanism (20).

10. The hot melt adhesive coating machine according to claim 9, characterized in that: A waste edge collecting mechanism (26) is provided on one side of the slitting mechanism (18).

Images