Dressing patch production apparatus and production process thereof

Abstract

The application provides a dressing sticker production device and a production process thereof, and relates to the technical field of dressing stickers. The device comprises a rack, a first compression die cutting assembly, a second compression die cutting assembly, a PE film compression assembly and a die cutting and packaging assembly. The first compression die cutting assembly comprises a first compression die seat and a sheet die cutting compression die seat. The second compression die cutting assembly comprises a foam die cutting die seat and a second compression die seat. The PE film compression assembly comprises two edge folding mechanisms and a PE film compression die seat. The bottom of the dressing sticker obtained through die cutting forms an easy-to-tear sealing part. The application realizes the automatic production and packaging of the dressing sticker. The sterile effect of the dressing sticker produced by the application is better, and the dressing sticker is easy to tear when used.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dressing stickers, in particular to a dressing sticker production equipment and a production process thereof. BACKGROUND

[0002] Dressing stickers are commonly used for wound treatment, which can isolate harmful microorganisms from the outside world, avoid wound infection, and absorb exudate from the wound to keep the wound dry. This makes the area in the middle of the dressing sticker that contacts the wound have higher sterile requirements, and the area on the outside of the dressing sticker that contacts the skin outside the wound has lower sterile requirements. However, the bottom of the existing dressing sticker is usually provided with a whole piece of PE film, which makes the dressing sticker unable to adapt to different levels of PE film according to the sterile requirements of different areas, and it is not easy to tear open. The bottom of the existing dressing sticker is covered with two PE films, and the inner sides of the two PE films are stacked in the middle of the dressing sticker. The sealing performance of the joint between the two PE films is poor, which greatly reduces the sterile effect of the dressing sticker.

[0003] Therefore, there is a need for a dressing sticker production equipment and a production process thereof that can solve the above problems. SUMMARY

[0004] The present application provides a dressing sticker production equipment and a production process thereof, which realizes automatic production and packaging of the dressing sticker. The easy-to-tear sealing part is provided, so that the sterile effect of the produced dressing sticker is better and it is easy to tear open when used.

[0005] One technical solution of the present application is implemented as follows:

[0006] The dressing sticker production equipment comprises a rack, and the rack is provided with:

[0007] a first compression die cutting assembly for compressing and die cutting the water-absorbing resin layer and the non-woven fabric into a plurality of composite sheets and sequentially compressing the composite sheets to the PU film, the first compression die cutting assembly comprising a first compression die seat and a sheet die cutting compression die seat;

[0008] a second compression die cutting assembly for die cutting and windowing the foam material belt and sequentially compressing the PU film with the composite sheet, the die cut foam material belt, and the silica gel together, and forming a composite material belt after compression, the second compression die cutting assembly comprising a foam die cutting die seat and a second compression die seat, the foam material belt being die cut with a window, and the composite sheet being located in the corresponding window.

[0009] A PE film pressing assembly for folding the first PE film and the second PE film and pressing the folded first PE film, the folded second PE film and the third PE film to the PE film at the bottom of the composite tape, the PE film pressing assembly comprising two edge folding mechanisms and a PE film pressing knife seat, the first PE film, the second PE film and the third PE film forming a tearable seal after being pressed, and the third PE film being between the first PE film and the second PE film.

[0010] A die cutting and packaging assembly for die cutting the composite tape into a sheet-shaped dressing patch and packaging the dressing patch, the bottom of the dressing patch after die cutting forming a tearable seal.

[0011] As a preferred technical solution, the tearable seal comprises a middle seal, two side seal portions and two tearable seam seals, the middle seal being composed of a middle portion of the third PE film, the two side seal portions being composed of the first PE film or the second PE film respectively, the first PE film and the second PE film each forming a folded edge folded outward after being folded, and each of the tearable seam seals being composed of a folded edge and a side of the third PE film.

[0012] As a preferred technical solution, the sheet material die cutting and pressing knife seat is provided with a sheet material die cutting knife roller and a sheet material die cutting bottom roller for die cutting the non-woven fabric and the water-absorbing resin layer, a PU film pressing roller is arranged downstream of the sheet material die cutting bottom roller, a sheet material transmission bottom roller is arranged downstream of the PU film pressing roller, and the sheet material transmission bottom roller, the PU film pressing roller, the sheet material die cutting bottom roller and the sheet material die cutting knife roller are sequentially transmissionally connected.

[0013] As a preferred technical solution, the water-absorbing resin layer, the non-woven fabric and the low-adhesion film pass through the sheet material die cutting and pressing knife seat between the sheet material die cutting knife roller and the sheet material die cutting bottom roller, and a row of the composite sheet is adhered to the low-adhesion film after die cutting and waste removal.

[0014] As a preferred technical solution, the low-adhesion film after die cutting and waste removal and the PU film pass through the sheet material die cutting and pressing knife seat between the sheet material die cutting bottom roller and the PU film pressing roller at the same time, and the composite sheet is sequentially pressed to the PU film.

[0015] As a preferred technical solution, each of the edge folding mechanisms comprises a fixed seat fixedly installed on the rack, a sliding platform slidingly installed on the fixed seat, a pressing plate and a guide plate fixedly installed on the top surface of the sliding platform, a gap between the pressing plate and the sliding platform, an edge folding gap between the guide plate and the sliding platform, and the edge folding gap gradually decreasing from one end to the other end.

[0016] As a preferred technical scheme, two guide columns are fixedly installed on the fixing base, the sliding platform is slidingly installed on the two guide columns, a lead screw is rotatably installed on the fixing base, a nut is threadedly installed on the lead screw, the nut is fixedly installed on the sliding platform, and one end of the lead screw is provided with an adjusting hand wheel.

[0017] As a preferred technical scheme, the die cutting and packaging assembly comprises an outline die cutting seat, a packaging mechanism and a cutting seat which are sequentially installed on the rack along the production direction of the dressing patch.

[0018] Another technical scheme of the present application is implemented as follows:

[0019] The production process of the dressing patch production equipment specifically comprises the following steps:

[0020] S1, pressing the water absorption resin layer, the non-woven fabric and the low-adhesion film: the water absorption resin layer, the non-woven fabric and the low-adhesion film are sequentially pressed together by the first pressing seat;

[0021] S2, die cutting the water absorption resin layer and the non-woven fabric: the pressed water absorption resin layer and the non-woven fabric are die cut into a plurality of composite sheets by the sheet die cutting and pressing seat, and the low-adhesion film is not die cut and is integrally retained, and after die cutting and waste removal, the composite sheet is attached to the low-adhesion film;

[0022] S3, transferring the composite sheet to the PU film: the low-adhesion film attached with the composite sheet and the PU film pass through the sheet die cutting and pressing seat at the same time, the composite sheet is attached to the PU film, and the low-adhesion film is peeled off after pressing;

[0023] S4, die cutting the foam material belt: the foam material belt is die cut into a row of windows by the foam die cutting seat;

[0024] S5, pressing the PU film, the foam material belt and the silica gel: the PU film attached with the composite sheet, the die cut foam material belt and the silica gel are sequentially pressed together by the pressing seat, and the composite material belt is obtained after pressing, and the composite sheet is located in the corresponding window;

[0025] S6, laminating the three PE films and the composite tape: by the two folding mechanisms, the inner sides of the first PE film and the second PE film are folded respectively and a folded edge is formed respectively, the folded first PE film, the folded second PE film and the third PE film are laminated to the bottom of the composite tape, after lamination, the first PE film and the second PE film are attached to the two sides of the composite tape, the third PE film is attached to the middle part of the composite tape, and the two sides of the third PE film are pressed against the two folded edges respectively;

[0026] S7, packaging the dressing patch: the composite tape with the laminated PE film is cut into the sheet-shaped dressing patch by the die cutting packaging assembly, and the dressing patch is sealed and packaged.

[0027] By adopting the technical scheme, the dressing patch production equipment has the following beneficial effects:

[0028] Since the dressing patch production equipment comprises the first laminating and die cutting assembly, the second laminating and die cutting assembly, the PE film laminating assembly and the die cutting packaging assembly, in the process of using the equipment, the non-woven fabric and the water-absorbing resin layer are laminated together by the first laminating die seat, the laminated non-woven fabric and water-absorbing resin layer are cut into a composite sheet by the sheet die cutting laminating die seat, and the composite sheet is attached to the PU film, compared with the existing dressing patch processing mode of cutting the tape first and then laminating, the composite sheet in the dressing patch adopts the processing mode of laminating first and then cutting, which greatly avoids the pollution of the attached surface between the non-woven fabric and the water-absorbing resin layer, and improves the sterility of the composite sheet.

[0029] Then the foam and the silica gel with the composite sheet attached and cut into a row of windows are laminated together by the second laminating die seat to form a composite tape, the folded first PE film, the folded second PE film and the third PE film are laminated to the bottom of the composite tape by the PE film laminating assembly, the bottom of the composite tape is formed with a tearable sealing part, and the composite tape is cut into a sheet-shaped dressing patch by the die cutting packaging assembly, and the dressing patch is packaged, in the present application, the first PE film, the second PE film and the third PE film are attached to the bottom of the dressing patch, and the tearable sealing part is formed, the tearable sealing part seals the bottom of the dressing patch in a region, and the sterility of the dressing patch is improved.

[0030] Since the easy-tear sealing part includes a central sealing part and two side sealing parts, the first and second PE films in the two side sealing parts can be PE films with sterility or general grade, sealing the areas on both sides of the dressing with lower sterility requirements. The third PE film in the central sealing part can be PE film with sterility or higher grade, sealing the central area of ​​the dressing with higher sterility requirements. Therefore, in this invention, by setting the easy-tear sealing part, the bottom of the dressing is sealed in sections according to the sterility requirements of the dressing, which improves the sterility of the dressing and avoids the high cost caused by using a whole piece of high-grade PE film.

[0031] Because the easy-tear sealing part includes two easy-tear seam sealing parts, each including a folded edge and the side of a third PE film, this dressing, by setting a folded edge at the PE film seam and pressing the side of the third PE film against the folded edge, forms a double sealing structure at the PE film seam compared to existing dressings. This avoids contamination caused by poor sealing at the PE film seam, further improving the sterility of the dressing. The folded edge makes the first, second, and third PE films easier to tear off.

[0032] Since the dressing production equipment includes a first pressing and die-cutting assembly, which includes a sheet die-cutting and pressing knife holder, and the sheet die-cutting and pressing knife holder is equipped with a sheet die-cutting knife roller, a sheet die-cutting bottom roller, a PU film pressing roller, and a sheet drive bottom roller, during the processing of the dressing, the pressed absorbent resin and non-woven fabric pass through the sheet die-cutting knife roller and the sheet die-cutting bottom roller under the traction of the low-adhesion film, and the absorbent resin and non-woven fabric are die-cut into a composite sheet. The composite sheet passes through the sheet die-cutting bottom roller and the PU film pressing roller simultaneously under the traction of the low-adhesion film, that is, the composite sheet is pressed onto the PU film. After passing through, the low-adhesion film is peeled off from the composite sheet. Therefore, this invention, by setting a sheet die-cutting and pressing knife holder, realizes the composite sheet die-cutting and forming and composite sheet transfer processes in the same station, thus optimizing the equipment structure.

[0033] This invention enables the automated production and packaging of a dressing with a non-woven fabric, absorbent resin layer, and foam core. The absorbent resin layer is a high-molecular polymer capable of absorbing several times its own weight in liquid. This superior absorption capacity rapidly absorbs wound exudate, keeping the wound dry and reducing irritation to the surrounding skin. Compared to existing dressings with foam cores, this dressing has excellent absorbency, avoiding the need for frequent dressing changes and minimizing the impact on the wound. It is particularly suitable for burns, ulcers, and other wounds with significant exudate. Simultaneously, the foam, a porous and soft material, conforms to the wound, absorbing exudate. Furthermore, the porous structure of the foam, combined with the breathable non-woven fabric, reduces moisture in the wound and surrounding skin, improving the dressing's comfort.

[0034] Since the dressing production equipment includes a folding mechanism, in this invention, the first PE film and the second PE film pass through corresponding gaps respectively, and one side of the first PE film and the second PE film extends into the corresponding folding gap. As the first PE film and the second PE film move forward, the sides of the first PE film and the second PE film gradually move from the large end to the small end of the folding gap. Under the guidance of the corresponding folding gap, the sides of the first PE film and the second PE film gradually fold outward, thereby forming a fold. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of the present invention;

[0037] Figure 2 This is a schematic diagram of the sheet die-cutting and pressing blade holder;

[0038] Figure 3 This is a schematic diagram of the structure passing through the gap;

[0039] Figure 4 This is a schematic diagram of one of the folding mechanisms;

[0040] Figure 5 This is a schematic diagram of the packaging mechanism;

[0041] Figure 6 This is a partial reference diagram of the production process;

[0042] Figure 7 This is a reference diagram for another part of the production process.

[0043] The components include: 1. Absorbent resin layer; 2. Non-woven fabric; 3. Composite sheet; 4. PU film; 5. First pressing blade holder; 6. Sheet die-cutting pressing blade holder; 7. Foam tape; 8. Silicone gel; 9. Composite tape; 10. Foam die-cutting blade holder; 11. Second pressing blade holder; 12. First PE film; 13. Second PE film; 14. Third PE film; 15. PE film pressing blade holder; 16. Easy-tear sealing part; 17. Dressing tape; 18. Sheet die-cutting roller; 19. Sheet die-cutting bottom roller; 20. P 21. Film pressing roller; 22. Sheet drive bottom roller; 23. Fixed seat; 24. Sliding platform; 25. Pressure plate; 26. Guide plate; 27. Through gap; 28. Folding gap; 29. ​​Guide column; 30. Lead screw; 31. Nut; 32. Adjusting handwheel; 33. Outline die-cutting knife holder; 34. Cutting knife holder; 35. Upper sealing template; 36. Electric heating plate; 37. Upper mounting plate; 38. Drive cylinder; 39. Lower mounting plate; 40. Roller; 41. Rotating shaft; 42. Cam; 43. Guide rod; 44. Foam die-cutting cutter roller; 45. Foam die-cutting bottom roller; 46. Foam die-cutting transmission bottom roller; 47. First peeling knife; 48. Second peeling knife; 49. First guide roller; 50. Second guide roller; 51. Foam feeding shaft; 52. Low-tack film feeding shaft; 53. Non-woven fabric feeding shaft; 54. Water-absorbing resin layer feeding shaft; 55. Silicone gel feeding shaft; 56. PU film feeding shaft; 57. Upper packaging paper feeding shaft; 58. Lower packaging paper feeding shaft; 59. PE film feeding shaft; 60. Low-adhesion film receiving shaft; 61. Composite sheet die-cutting waste receiving shaft; 62. PU film with integrated release film receiving shaft; 63. Foam die-cutting waste receiving shaft; 64. Silicone gel with integrated film receiving shaft; 65. Silicone gel with integrated release film receiving shaft; 66. PU film with integrated film receiving shaft; 67. Outer die-cutting waste receiving shaft; 68. Window; 69. Folded edge; 70. Packaging paper; 71. Low-adhesion film; 72. Lower sealing template; 73. Middle sealing part; 74. Side sealing part; 75. Easy-tear seam sealing part. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Example 1:

[0046] like Figures 1-7 As shown in the figure, the dressing production equipment includes a frame (not shown in the figure), on which the following are mounted:

[0047] A first pressing and die-cutting assembly is used to press the absorbent resin layer 1 and the nonwoven fabric 2 together and then die-cut them into several composite sheets 3 and press the composite sheets 3 onto the PU film 4 in sequence. The first pressing and die-cutting assembly includes a first pressing knife holder 5 and a sheet die-cutting pressing knife holder 6.

[0048] The second pressing and die-cutting assembly is used to die-cut the foam strip 7 to create windows and sequentially press the PU film 4 with the composite sheet 3 attached, the die-cut foam strip 7, and the silicone gel 8 together to form a composite strip 9 after pressing. The second pressing and die-cutting assembly includes a foam die-cutting knife holder 10 and a second pressing knife holder 11. The foam strip 7 is die-cut with windows 67, and the composite sheet 3 is located in the corresponding window 67.

[0049] A PE film pressing assembly is used to fold the first PE film 12 and the second PE film 13 and press the folded first PE film 12, the folded second PE film 13 and the third PE film 14 to the bottom of the composite strip 9. The PE film pressing assembly includes two folding mechanisms and a PE film pressing knife seat 15. The third PE film 14 is located between the first PE film 12 and the second PE film 13.

[0050] A die-cutting packaging assembly for die-cutting composite strip 9 into sheet-shaped dressing patches 17 and packaging the dressing patches 17, wherein the bottom of the die-cut dressing patch 17 has an easy-tear sealing part 16.

[0051] like Figure 7 As shown, the easy-tear sealing part 16 includes a middle sealing part 72, two side sealing parts 73 and two easy-tear seam sealing parts 74. The middle sealing part 72 is composed of the middle part of the third PE film 14. The two side sealing parts 73 are respectively composed of the first PE film 12 or the second PE film 13. After the first PE film 12 and the second PE film 13 are folded, a folded edge 68 is formed on the inner side. Each easy-tear seam sealing part 74 is composed of a folded edge 68 and a corresponding side of the third PE film 14.

[0052] The sheet die-cutting and pressing knife holder 6 is equipped with a sheet die-cutting knife roller 18 and a sheet die-cutting bottom roller 19 for die-cutting non-woven fabric 2 and absorbent resin layer 1. A PU film pressing roller 20 is located downstream of the sheet die-cutting bottom roller 19, and a sheet drive bottom roller 21 is located downstream of the PU film pressing roller 20. The sheet drive bottom roller 21, the PU film pressing roller 20, the sheet die-cutting bottom roller 19 and the sheet die-cutting knife roller 18 are connected in sequence for transmission.

[0053] Additionally, the absorbent resin layer 1, nonwoven fabric 2, and low-adhesion film 70 are inserted into the sheet die-cutting pressing knife seat 6 between the sheet die-cutting knife roller 18 and the sheet die-cutting bottom roller 19. After die-cutting and waste removal, a row of composite sheets 3 is pasted on the low-adhesion film 70.

[0054] Furthermore, after die-cutting and waste removal, the low-viscosity film 70 and the PU film 4 simultaneously pass through the sheet die-cutting and pressing knife seat 6 between the sheet die-cutting bottom roller 19 and the PU film pressing roller 20, and the composite sheet 3 is sequentially pressed onto the PU film 4.

[0055] Secondly, each folding mechanism includes a fixed base 22, which is fixedly installed on the frame. A sliding platform 23 is slidably installed on the fixed base 22. A pressure plate 24 and a guide plate 25 are fixedly installed on the top surface of the sliding platform 23. A passage gap 26 is provided between the pressure plate 24 and the sliding platform 23, and a folding gap 27 is provided between the guide plate 25 and the sliding platform 23. The folding gap 27 gradually decreases from one end to the other end.

[0056] like Figure 3 and Figure 4 As shown, two guide posts 28 are fixedly installed on the fixed base 22, and the sliding platform 23 is slidably installed on the two guide posts 28. A lead screw 29 is rotatably installed on the fixed base 22, and a nut 30 is threaded on the lead screw 29. The nut 30 is fixedly installed on the sliding platform 23. An adjusting handwheel 31 is installed at one end of the lead screw 29. Both guide posts 28 and lead screw 29 extend along the width direction of the composite material strip 9.

[0057] The die-cutting packaging assembly includes a profile die-cutting blade holder 32, a packaging mechanism, and a cutting blade holder 33, which are sequentially mounted on the frame along the production direction of the dressing 17. The profile die-cutting blade holder 32 is located downstream of the second pressing blade holder 11.

[0058] The packaging mechanism includes an upper packaging template 34 and a lower packaging template 71 that are slidably mounted on a frame in a vertical direction. The lower packaging template 71 is located below the upper packaging template 34. An electric heating plate 35 is fixedly mounted on the top of the upper packaging template 34. An upper mounting plate 36 is fixedly mounted on the top of the electric heating plate 35. Several driving cylinders 37 are connected to the upper mounting plate 36. The cylinder bodies of the driving cylinders 37 are fixedly mounted on the frame. A lower mounting plate 38 is fixedly mounted on the bottom of the lower packaging template 71. Several rollers 39 are rotatably mounted on the bottom of the lower mounting plate 38. A horizontally arranged rotating shaft 40 is rotatably mounted on the frame. The rotating shaft 40 is located below the rollers 39. Several cams 41 that are adapted to the rollers 39 are mounted on the rotating shaft 40. Several vertically arranged guide rods 42 are fixedly mounted on the frame. The upper mounting plate 36 and the lower mounting plate 38 are slidably mounted on the corresponding guide rods 42.

[0059] The foam die-cutting cutter holder 10 is provided with a foam die-cutting cutter roller 43, a foam die-cutting bottom roller 44, and a foam die-cutting transmission bottom roller 45 in sequence from top to bottom. The foam die-cutting transmission bottom roller 45, the foam die-cutting bottom roller 44, and the foam die-cutting cutter roller 43 are connected in sequence for transmission. In this invention, the transmission connection between the rollers is all by means of gear meshing. The transmission gears are not shown in the figure. The foam die-cutting transmission bottom roller 45 and the sheet transmission bottom roller 21 are both connected to a bottom roller drive motor. The bottom roller drive motors are all fixedly installed on the frame. The bottom roller drive motors are not shown in the figure.

[0060] The upstream of the PE film pressing knife holder 15 is provided a first peeling knife 46 for peeling off the release film of the silicone gel, and the downstream of the PE film pressing knife holder 15 is provided a second peeling knife 47 for peeling off the release film of the PU film.

[0061] The upstream of the sheet die-cutting and pressing knife holder 6 is provided with a first guide roller 48 for guiding the peeled low-tack film 70, and the downstream of the sheet die-cutting and pressing knife holder 6 is provided with a second guide roller 49 for guiding the peeled PU film with its own release film.

[0062] The frame is equipped with a feeding device and a receiving device. The feeding device includes a foam feeding shaft 50, a low-adhesion film feeding shaft 51, a non-woven fabric feeding shaft 52, a water-absorbing resin layer feeding shaft 53, a silicone gel feeding shaft 54, a PU film feeding shaft 55, an upper packaging paper feeding shaft 56, a lower packaging paper feeding shaft 57, and three PE film feeding shafts 58, all rotatably mounted on the frame. The foam feeding shaft 50 is located upstream of the foam die-cutting knife holder 10. The low-adhesion film feeding shaft 51 and the non-woven fabric feeding shaft 52 are also located upstream of the foam die-cutting knife holder 10. Both are located upstream of the first pressing knife holder 5. The silicone gel feeding shaft 54 ​​is located upstream of the second pressing knife holder 11. The PU film feeding shaft 55 is located downstream of the sheet die-cutting pressing knife holder 6. The upper packaging paper feeding shaft 56 and the lower packaging paper feeding shaft 57 are both located downstream of the outer shape die-cutting knife holder 32. The three PE film feeding shafts 58 are located below the PE film pressing knife holder 15. The two folding mechanisms are located between the corresponding PE film feeding shafts 58 and the PE film pressing knife holder 15.

[0063] The receiving device includes a low-adhesion film receiving shaft 59, a composite sheet die-cutting waste receiving shaft 60, a PU film with its own release film receiving shaft 61, a foam die-cutting waste receiving shaft 62, a silicone gel with its own film receiving shaft 63, a silicone gel with its own release film receiving shaft 64, a PU film with its own film receiving shaft 65, and an outline die-cutting waste receiving shaft 66.

[0064] Several material shaft drive motors are fixedly installed on the frame. The aforementioned receiving shaft and the aforementioned discharging shaft are each connected to a material shaft drive motor. The material shaft drive motors are not shown in the figure.

[0065] Example 2:

[0066] The manufacturing process of dressing patch production equipment specifically includes the following steps:

[0067] S1. Pressing together the absorbent resin layer 1, nonwoven fabric 2 and low-adhesion film 70: The absorbent resin layer 1, nonwoven fabric 2 and low-adhesion film 70 are pressed together in sequence by the first pressing knife seat 5.

[0068] S2, Die-cutting the absorbent resin layer 1 and non-woven fabric 2: The press-fitted absorbent resin layer 1 and non-woven fabric 2 are die-cut into several composite sheets 3 by using the sheet die-cutting and pressing knife seat 6. The low-adhesion film 70 is completely retained and not die-cut. After the die-cutting waste is discharged, the composite sheets 3 are attached to the low-adhesion film 70.

[0069] S3. Composite sheet 3 is transferred to PU film 4: The low-adhesion film 70 with composite sheet 3 is bonded to PU film 4 and PU film 4 pass through sheet die-cutting and pressing knife seat 6 at the same time. Composite sheet 3 and PU film 4 are bonded together and then the low-adhesion film 70 is peeled off after pressing.

[0070] In this invention, before the PU film 4 is bonded to the composite sheet 3, the PU film with its own release film is peeled off from the PU film 4 by the guidance of the second guide roller 49. After the PU film 4 is bonded to the composite sheet 3, the low-adhesion film 70 is peeled off from the composite sheet 3 by the guidance of the first guide roller 48. The adhesion between the low-adhesion film 70 and the composite sheet 3 is less than the adhesion between the PU film 4 and the composite sheet 3. Therefore, after the low-adhesion film 70 is peeled off, the composite sheet 3 is bonded to the PU film 4.

[0071] S4, Die-cut foam strip 7: Through the foam die-cutting knife holder 10, a row of windows 67 is die-cut out of the foam strip 7.

[0072] S5, Pressing PU film 4, foam strip 7 and silicone gel 8: Using a pressing knife, the PU film 4 with the composite sheet 3 attached, the die-cut foam strip 7 and silicone gel 8 are pressed together in sequence, and after pressing, a composite strip 9 is obtained and the composite sheet 3 is located in the corresponding window 67.

[0073] In this invention, before pressing, the silicone gel's own film is peeled off from the silicone gel 8.

[0074] S6. Pressing three PE films and composite strip 9: The inner sides of the first PE film 12 and the second PE film 13 are folded through two folding mechanisms to form a fold 68. The folded first PE film 12, the folded second PE film 13 and the third PE film 14 are pressed to the bottom of the composite strip 9. After pressing, the first PE film 12 and the second PE film 13 are attached to the two sides of the composite strip 9, and the third PE film 14 is attached to the middle of the composite strip 9. The two sides of the third PE film 14 are pressed against the two folds 68 respectively.

[0075] S7, Packaging Dressing 17: The composite strip 9 with PE film pressed on it is cut into a sheet dressing 17 by the die-cutting knife 32. The sheet dressing 17 is sealed between two wrapping papers 69 by the packaging mechanism. The continuous wrapping paper 69 is cut by the cutting knife 33 to obtain the packaged dressing 17.

[0076] In summary, this invention enables automated production and packaging of dressings. The easy-tear sealing part improves the sterility of the produced dressings and makes them easy to tear during use.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dressing production equipment, including a frame, characterized in that, The frame is equipped with: A first pressing and die-cutting assembly is used to press and die-cut a water-absorbing resin layer and a non-woven fabric into several composite sheets and press the composite sheets onto a PU film in sequence. The first pressing and die-cutting assembly includes a first pressing knife holder and a sheet die-cutting pressing knife holder. A second pressing and die-cutting assembly is used to die-cut windows in foam strip and sequentially press the PU film, the die-cut foam strip, and the silicone gel with the composite sheet attached together to form a composite strip after pressing. The second pressing and die-cutting assembly includes a foam die-cutting knife holder and a second pressing knife holder. The foam strip is die-cut with windows, and the composite sheet is located in the corresponding windows. A PE film pressing assembly for folding a first PE film and a second PE film and pressing the folded first PE film, the folded second PE film and the third PE film to the bottom of the composite strip. The PE film pressing assembly includes two folding mechanisms and a PE film pressing knife holder. The third PE film is located between the first PE film and the second PE film. A die-cutting packaging assembly for die-cutting the composite strip into sheet-shaped dressings and packaging the dressings, wherein the bottom of the die-cut dressing has an easy-tear sealing part; The easy-tear sealing part includes a middle sealing part, two side sealing parts and two easy-tear seam sealing parts. The middle sealing part is composed of the middle part of the third PE film. The two side sealing parts are respectively composed of the first PE film and the second PE film. After the first PE film and the second PE film are folded, they each form an outward folded edge on their inner side. Each easy-tear seam sealing part is composed of one folded edge and a side of the corresponding third PE film. The sheet die-cutting and pressing knife holder is equipped with a sheet die-cutting knife roller and a sheet die-cutting bottom roller for die-cutting the non-woven fabric and the absorbent resin layer. A PU film pressing roller is located downstream of the sheet die-cutting bottom roller, and a sheet drive bottom roller is located downstream of the PU film pressing roller. The sheet drive bottom roller, the PU film pressing roller, the sheet die-cutting bottom roller, and the sheet die-cutting knife roller are sequentially connected in a driving manner. The absorbent resin layer, the nonwoven fabric, and the low-adhesion film are inserted into the sheet die-cutting pressing knife seat between the sheet die-cutting knife roller and the sheet die-cutting bottom roller. After die-cutting and waste removal, a row of the composite sheet is pasted on the low-adhesion film. After die-cutting and waste removal, the low-viscosity film and the PU film simultaneously pass through the sheet die-cutting and pressing blade between the sheet die-cutting bottom roller and the PU film pressing roller, and the composite sheet is sequentially pressed onto the PU film; Each of the folding mechanisms includes a fixed base, which is fixedly installed on the frame. A sliding platform is slidably installed on the fixed base. A pressure plate and a guide plate are fixedly installed on the top surface of the sliding platform. A passage gap is provided between the pressure plate and the sliding platform. A folding gap is provided between the guide plate and the sliding platform. The folding gap gradually decreases from one end to the other end. The die-cutting packaging assembly includes a shape die-cutting blade holder, a packaging mechanism, and a cutting blade holder, which are sequentially mounted on the frame along the production direction of the dressing. The shape die-cutting blade holder is located downstream of the second pressing blade holder.

2. The dressing patch production equipment according to claim 1, characterized in that, Two guide columns are fixedly installed on the fixed base, and the sliding platform is slidably installed on the two guide columns. A lead screw is rotatably installed on the fixed base, and a nut is threaded onto the lead screw. The nut is fixedly installed on the sliding platform, and an adjusting handwheel is installed at one end of the lead screw. The two guide columns and the lead screw all extend along the width direction of the composite material strip.

3. The production process using the dressing patch production equipment described in claim 1 or 2, characterized in that, Specifically, the steps include the following: S1. Pressing the absorbent resin layer, the nonwoven fabric and the low-adhesion film together: The absorbent resin layer, the nonwoven fabric and the low-adhesion film are pressed together in sequence using the first pressing knife. S2. Die-cutting the absorbent resin layer and the nonwoven fabric: The press-fitted absorbent resin layer and the nonwoven fabric are die-cut into several composite sheets by the sheet die-cutting and pressing knife. The low-adhesion film is completely retained and not die-cut. After die-cutting waste is discharged, the composite sheets are attached to the low-adhesion film. S3. The composite sheet is transferred to the PU film: The low-adhesion film with the composite sheet attached and the PU film pass through the sheet die-cutting and pressing knife seat at the same time, the composite sheet and the PU film are attached, and the low-adhesion film is peeled off after pressing. S4. Die-cutting the foam strip: The foam strip is die-cut into a row of windows through the foam die-cutting knife holder; S5. Pressing the PU film, the foam strip and the silicone gel: Using the pressing knife, the PU film with the composite sheet attached, the die-cut foam strip and the silicone gel are pressed together in sequence, and the composite strip is obtained after pressing, and the composite sheet is located in the corresponding window. S6. Pressing three PE films and the composite strip: Using the two folding mechanisms, the inner sides of the first PE film and the second PE film are folded to form a folded edge. The folded first PE film, the folded second PE film, and the third PE film are pressed to the bottom of the composite strip. After pressing, the first PE film and the second PE film are attached to both sides of the composite strip, and the third PE film is attached to the middle of the composite strip. The two sides of the third PE film are pressed against the two folded edges respectively. S7. Packaging the dressing: The composite strip with PE film pressed on it is die-cut into sheet-shaped dressings using a die-cutting packaging assembly and then sealed and packaged.

Images