Processing device for heat sealing layer of composite film for food packaging

Abstract

The utility model relates to the technical field of heat-sealing composite films, in particular to a processing device for a heat-sealing layer of a composite film for food packaging, which comprises a drying mechanism capable of quickly drying double surfaces of the composite film at the same time. According to the utility model, the composite film is wound on the round rods on the two hollow pipes, so that hot air can be supplied into the bent pipe and the three-way pipe through the hot-air blower, then the hot air can be introduced into the hollow pipes through the communicating seat and the rotating pipe, and a certain distance is formed between the film material and the surfaces of the hollow pipes due to the action of the round rods; and meanwhile, one end of the three-way pipe can be communicated with the hollow shell, so that the hot air is blown out through the multiple air outlet plates to dry the other side of the composite film, and therefore, double-sided synchronous drying can be performed on the composite film in the rolling process; therefore, the drying efficiency of the heat-sealing layer of the composite film is improved, and meanwhile the production quality of the heat-sealing composite film is improved.

Description

Technical Field

[0001] This utility model relates to the field of heat-sealing composite film technology, specifically a heat-sealing layer processing device for composite films used in food packaging. Background Technology

[0002] Composite film refers to a multi-layered film formed by bonding various plastics with paper, metal, or other materials through processes such as lamination, extrusion, and co-extrusion. Composite films generally consist of a substrate, laminating adhesive, barrier material, heat-sealing material, and printing and protective coatings. During the lamination process, the film itself contains a certain amount of moisture. If this moisture is not removed, the laminated packaging bag may experience problems such as bubbles, bulges, and cracks, affecting product quality and lifespan. Drying effectively removes this moisture, ensuring the quality of the composite film. Drying also helps the adhesive fully cure and the solvent completely evaporate. If the solvent is not completely dried, the adhesive may not cure sufficiently, affecting the peel strength of the composite film. Currently, the drying efficiency of composite film heat-sealing layer processing equipment is relatively poor. Most often, one side of the composite film is dried before the other side, and the tension of the composite film is difficult to adjust during feeding and discharging, leading to deformation or excessive looseness of the dried composite film. Utility Model Content

[0003] The purpose of this invention is to provide a heat-sealing device for composite films used in food packaging, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A heat-sealing device for composite films used in food packaging, comprising:

[0006] The drying mechanism is capable of simultaneously and rapidly drying both sides of the composite film. The drying mechanism includes a hot drying oven, a panel fixedly connected to one side of the hot drying oven, two glass plates symmetrically fixedly connected to the panel, two hollow tubes rotatably arranged inside the hot drying oven, multiple air outlets circumferentially spaced on the hollow tubes, a heat-sealing composite film wrapped between the two hollow tubes, a rotating tube communicating with the interior of each hollow tube fixedly connected to one end of each hollow tube, a connecting seat rotatably sleeved on the exterior of each rotating tube, a T-shaped pipe fixedly connected between the two connecting seats, a bent pipe fixedly connected to one end of the T-shaped pipe, and a hot air blower fixedly installed at the other end of the bent pipe.

[0007] The tension adjustment mechanism is capable of adjusting the tension of the membrane during feeding and discharging.

[0008] Furthermore, the tension adjustment mechanism includes a frame fixedly connected to the hot drying oven, and two guide rollers are symmetrically arranged in the frame, with lifting seats rotatably connected to both ends of the two guide rollers.

[0009] Furthermore, a bidirectional lead screw is screwed between the two lifting seats located on one side, and a synchronous pulley is fixedly sleeved at the bottom end of each of the two bidirectional lead screws. A synchronous belt is sleeved between the two synchronous pulleys, and a rotating handle is fixedly connected to the end of one of the bidirectional lead screws.

[0010] Furthermore, the outside of the rotating handle is fitted with an anti-slip sleeve.

[0011] Furthermore, the bottom of the hot oven is symmetrically and fixedly connected with four casters, and the casters are equipped with a braking structure.

[0012] Furthermore, both ends of the hollow tube are rotatably provided with bearing seats that are fixedly connected to the hot oven, and multiple round rods are fixedly connected in a ring at equal intervals in both hollow tubes.

[0013] Furthermore, one end of the three-way pipe is fixedly connected to a hollow shell, and multiple air outlet plates that communicate with the interior are fixedly connected at equal intervals on the side wall of the hollow shell.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By rolling the composite film between two hollow tubes and a guide roller, with the composite film wrapped around a round rod on the two hollow tubes, hot air can be supplied to the bend and tee pipes by a hot air blower. Then, the hot air can be introduced into the hollow tubes through the connecting seat and the rotating pipe. Due to the action of the round rod, the film material is at a certain distance from the surface of the hollow tube, so the hot air can be sprayed out from multiple air outlets of the hollow tube to dry one side of the composite film. At the same time, one end of the tee pipe can be connected to the hollow shell, so hot air is blown out through multiple air outlets to dry the other side of the composite film. Thus, the composite film can be dried simultaneously on both sides during the rolling process, thereby improving the drying efficiency of the heat-sealing layer of the composite film and improving the production quality of the heat-sealed composite film.

[0016] 2. The rotating handle and synchronous belt can simultaneously drive the two bidirectional lead screws to rotate, thus adjusting the distance between the two lifting seats on the bidirectional lead screws. This facilitates the adjustment of the pressing force of the two guide rollers on the heat-sealing composite film, thereby allowing for the tension adjustment of the heat-sealing composite film entering and exiting the heat-sealing oven and preventing deformation or excessive looseness of the heat-sealing composite film during winding. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the hot drying oven in this utility model;

[0020] Figure 4 This is a schematic diagram of the external structure of the hot drying oven in this utility model;

[0021] Figure 5 This is a schematic diagram of the tension adjustment mechanism in this utility model.

[0022] In the diagram: 100, Drying mechanism; 101, Hot drying oven; 102, Panel; 103, Glass plate; 104, Caster wheel; 105, Hollow tube; 106, Air outlet; 107, Round rod; 108, Rotating tube; 109, Bearing seat; 110, Connecting seat; 111, T-shaped pipe; 112, Hollow shell; 113, Air outlet plate; 114, Bend; 115, Hot air blower; 200, Tension adjustment mechanism; 201, Frame; 202, Guide roller; 203, Lifting seat; 204, Bidirectional lead screw; 205, Synchronous pulley; 206, Synchronous belt; 207, Rotary handle; 208, Anti-slip sleeve; 209, Heat-sealing composite film. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5In this embodiment of the present invention, a heat-sealing device for a composite film used in food packaging includes: a drying mechanism 100 and a tension adjustment mechanism 200. The drying mechanism 100 is capable of simultaneously and rapidly drying both sides of the composite film. The drying mechanism 100 includes a hot drying oven 101. A panel 102 is fixedly connected to one side of the hot drying oven 101. Two glass plates 103 are symmetrically fixedly connected to the panel 102. Two hollow tubes 105 are rotatably arranged inside the hot drying oven 101. Multiple air outlets are circumferentially and equidistantly opened on the hollow tubes 105. 106. A heat-sealing composite film 209 is wound between two hollow tubes 105. One end of each hollow tube 105 is fixedly connected to a rotating tube 108 that communicates with its interior. A connecting seat 110 is rotatably sleeved on the outside of each of the two rotating tubes 108. A three-way pipe 111 is fixedly connected between the two connecting seats 110. One end of a bend 114 is fixedly connected to the three-way pipe 111. A hot air blower 115 is fixedly installed at the other end of the bend 114. The tension adjustment mechanism 200 can adjust the tension of the film during feeding and discharging. Both ends of the hollow tube 105 are rotatably equipped with bearing seats 109 that are fixedly connected to the hot drying oven 101. Multiple round rods 107 are fixedly connected in a ring at equal intervals in both hollow tubes 105. They are introduced into the hollow tube 105 through the connecting seat 110 and the rotating tube 108. Due to the action of the round rods 107, the film material is at a certain distance from the surface of the hollow tube 105, so that hot air can be sprayed out from the multiple air outlets 106 of the hollow tube 105 to dry one side of the composite film. One end of the three-way pipe 111 is fixedly connected to a hollow shell 112. Both ends of the hollow pipe 105 are rotatably provided with bearing seats 109 that are fixedly connected to the hot drying oven 101. Multiple round rods 107 are fixedly connected in a ring at equal intervals in both hollow pipes 105. Multiple air outlet plates 113 that communicate with the interior are fixedly connected at equal intervals on the side wall of the hollow shell 112. Hot air is blown out through the multiple air outlet plates 113 to dry the other side of the composite film, so that the composite film can be dried simultaneously on both sides during the rolling process.

[0025] Specifically, by rolling the composite film between two hollow tubes 105 and the guide roller 202, and with the composite film wrapped around the round rods 107 on the two hollow tubes 105, hot air can be supplied to the bent tube 114 and the three-way tube 111 by the hot air blower 115. Then, the hot air can be introduced into the hollow tubes 105 through the connecting seat 110 and the rotating tube 108. Due to the action of the round rod 107, the film material is at a certain distance from the surface of the hollow tubes 105, so the hot air can be sprayed out from the multiple air outlets 106 of the hollow tubes 105 to dry one side of the composite film. At the same time, one end of the three-way tube 111 can be connected to the hollow shell 112, so the hot air is blown out through the multiple air outlets 113 to dry the other side of the composite film. Thus, the composite film can be dried simultaneously on both sides during the rolling process, thereby improving the drying efficiency of the heat-sealing layer of the composite film and improving the production quality of the heat-sealed composite film 209.

[0026] Example 1

[0027] like Figure 5 As shown, in this embodiment, the tension adjustment mechanism 200 includes a frame 201 fixedly connected to the hot drying oven 101. Two guide rollers 202 are symmetrically arranged in the frame 201, and lifting seats 203 are rotatably connected to both ends of the two guide rollers 202. A bidirectional lead screw 204 is screwed between the two lifting seats 203 on one side. Synchronous pulleys 205 are fixedly sleeved at the bottom ends of the two bidirectional lead screws 204, and a synchronous belt 206 is sleeved between the two synchronous pulleys 205, which adjusts the distance between the two lifting seats 203 on the bidirectional lead screw 204, thereby facilitating the adjustment of the pressing force of the two guide rollers 202 on the heat-sealing composite film 209. A rotating handle 207 is fixedly connected to the end of one bidirectional lead screw 204. An anti-slip sleeve 208 is sleeved on the outside of the rotating handle 207. Four universal wheels 104 are symmetrically fixedly connected to the bottom of the hot drying oven 101, and each universal wheel 104 is equipped with a brake structure.

[0028] In practice, the rotating handle 207 and the synchronous belt 206 can simultaneously drive the two bidirectional lead screws 204 to rotate, thus adjusting the distance between the two lifting seats 203 on the bidirectional lead screws 204. This facilitates the adjustment of the pressing force of the two guide rollers 202 on the heat-sealing composite film 209, thereby adjusting the tension of the heat-sealing composite film 209 entering and exiting the hot drying oven 101 and preventing the heat-sealing composite film 209 from deforming or becoming too loose during winding.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A heat-sealing device for composite film used in food packaging, characterized in that, include: The drying mechanism (100) is capable of simultaneously and rapidly drying both sides of the composite film. The drying mechanism (100) includes a hot drying oven (101). A panel (102) is fixedly connected to one side of the hot drying oven (101). Two glass plates (103) are symmetrically fixedly connected to the panel (102). Two hollow tubes (105) are rotatably arranged inside the hot drying oven (101). Multiple air outlets (106) are circumferentially and evenly spaced on the hollow tubes (105). A heat-sealing composite film (209) is wound between the hollow tubes (105). One end of each hollow tube (105) is fixedly connected to a rotating tube (108) that communicates with its interior. A connecting seat (110) is rotatably sleeved on the outside of each of the two rotating tubes (108). A three-way pipe (111) is fixedly connected between the two connecting seats (110). One end of a bend (114) is fixedly connected to the three-way pipe (111), and a hot air blower (115) is fixedly installed at the other end of the bend (114). Tension adjustment mechanism (200) can adjust the tension of the membrane during feeding and discharging.

2. The heat-sealing device for composite film of food packaging according to claim 1, characterized in that, The tension adjustment mechanism (200) includes a frame (201) fixedly connected to the hot oven (101). Two guide rollers (202) are symmetrically arranged in the frame (201), and lifting seats (203) are rotatably connected to both ends of the two guide rollers (202).

3. The heat-sealing device for composite film in food packaging according to claim 2, characterized in that, Two lifting seats (203) located on one side are screwed together with a two-way screw rod (204). The bottom ends of the two two-way screw rods (204) are fixedly sleeved with synchronous pulleys (205). A synchronous belt (206) is sleeved between the two synchronous pulleys (205). A handle (207) is fixedly connected to the end of one two-way screw rod (204).

4. The heat-sealing device for composite film of food packaging according to claim 3, characterized in that, The outside of the handle (207) is fitted with an anti-slip sleeve (208).

5. The heat-sealing device for composite film of food packaging according to claim 4, characterized in that, The bottom of the hot oven (101) is symmetrically and fixedly connected with four casters (104), and the casters (104) are equipped with a braking structure.

6. The heat-sealing device for composite film of food packaging according to claim 4, characterized in that, Both ends of the hollow tube (105) are rotatably provided with bearing seats (109) that are fixedly connected to the hot oven (101), and multiple round rods (107) are fixedly connected in a ring at equal intervals in both hollow tubes (105).

7. The heat-sealing device for composite film of food packaging according to claim 4, characterized in that, One end of the three-way pipe (111) is fixedly connected to a hollow shell (112), and multiple air outlet plates (113) that communicate with its interior are fixedly connected at equal intervals on the side wall of the hollow shell (112).

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