Composite device for production of wrapping film

Abstract

The utility model discloses a composite device for producing a winding film, which comprises a support frame, a mounting disc, a base film guide roller and a base film compression roller I. In the use process of the composite device, another group of base films are compounded and attached to the surface of a bottom-layer base film sprayed with feed liquid, and then the double-layer base films are conveyed by the base film compression roller to move; the second base film pressing roller on the top of the first base film pressing roller can pressurize, stabilize and compound the top of the double-layer base film, it is guaranteed that tackifying feed liquid between the double-layer base film is evenly laid, and when the top base film is rolled by the first partial pressing roller, the top base film can be better attached to the bottom-layer base film; and meanwhile, the rolled glue solution group on the convex part of the top base film can be pressed and dispersed by the partial pressure rubber ring I on the surface of the partial pressure roller I, so that the glue solution group is quickly spread and dispersed, the top base film and the bottom base film are effectively adhered, compounded and fixed, and the compounding strength of the double-layer base film is ensured.

Description

Technical Field

[0001] This utility model relates to the field of stretch film production technology, specifically a composite device for stretch film production. Background Technology

[0002] Stretch film has evolved from single-layer to two-layer and three-layer production. The primary method for producing LLDPE stretch film is casting, as casting production offers advantages such as uniform thickness and high transparency, making it suitable for high-ratio pre-stretching requirements. However, single-layer casting cannot achieve single-sided adhesion, limiting its applications. Single- and double-layer castings offer less material selection and higher formulation costs compared to three-layer castings; therefore, a three-layer co-extrusion structure remains the most ideal. High-quality stretch film should possess characteristics such as high transparency, high longitudinal elongation, high yield point, high transverse tear strength, and good puncture resistance.

[0003] LLDPE stretch wrap film is made from high-quality LLDPE as the base material, with the addition of premium tackifiers. It is produced through heating, extrusion, casting, and then cooling by chilling rollers. It has advantages such as high toughness, high elasticity, tear resistance, high adhesion, thinness, cold resistance, heat resistance, pressure resistance, dustproofness, and waterproofness. It is available in single-sided and double-sided adhesive versions. It can save materials, labor, and time when used, and is widely used in papermaking, logistics, chemical industry, plastic raw materials, building materials, food, glass and other fields.

[0004] In the prior art, publication number "CN220886386U" discloses a laminating device for stretch film production. This device includes: two fixed plates fixedly connected to the top of a workbench at opposite sides; a support plate fixedly connected to the front of each fixed plate; a mounting box fixedly connected to the top of each support plate; a motor fixedly connected inside each mounting box; a bidirectional threaded rod fixedly connected to one end of each motor; and the other end of each threaded rod rotatably connected to the back of the inner wall of the fixed plate via a fixing ring. The stretch film laminating device provided by this invention, after being adjusted to the corresponding position, only requires a cylinder to hold the slider outside the guide rod. This device allows adjustment of the distance between the two guide rods during stretch film production according to the tension of the stretch film, preventing deformation or loosening of the stretch film due to excessive or insufficient tension, which could affect the laminating quality.

[0005] However, existing technologies still have significant shortcomings, such as:

[0006] In the aforementioned apparatus and existing technologies, the surface of multi-layer LLDPE stretch wrap film can be formed by adding a high-quality tackifier, followed by heating, extrusion, casting, and then cooling by a chilling roller. When the high-quality tackifier is sprayed onto the surface of a single-layer wrap film, the tackifier between the multi-layer wrap films needs to be spread evenly to avoid uneven surface strength of the multi-layer wrap film, which could lead to damage during wrapping. Utility Model Content

[0007] The purpose of this invention is to provide a composite device for producing stretch film, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a composite device for producing stretch film, comprising a support frame, a mounting plate, a base film guide roller and a base film pressure roller one, wherein the mounting plate is mounted on one side of the support frame, wherein the base film guide roller is mounted on one end of the mounting plate, the base film pressure roller one is mounted on the surface of the mounting plate near the bottom area of ​​the mounting plate, and a base film pressure roller two is mounted on the mounting plate near the top area;

[0009] A pressure leveling unit for tackifier material on the surface of the stretch film is provided between adjacent mounting discs. It is used to guide and level the tackifier material sprayed on the surface of the base film, thereby assisting in the winding and lamination of multiple base films.

[0010] Preferably, the pressure leveling unit for the tackifier material on the surface of the stretch film includes a spraying section, the spraying section includes a tackifier cartridge, the tackifier cartridge is installed between adjacent mounting discs, the tackifier cartridge has a cartridge cavity inside, a vertical guide rail is embedded in the inner wall of the cartridge cavity, a fixed seat is installed on the moving end of the vertical guide rail, a liquid tank is installed on one side of the fixed seat, an electromagnetic spray pipe is installed at the bottom of the liquid tank, and electromagnetic spray valves are spaced apart at the bottom of the electromagnetic spray pipe.

[0011] Preferably, the pressure leveling unit for the surface tackifier material of the stretch film further includes a first leveling part, the first leveling part includes an inner cavity frame, an inner cavity groove is formed on the inner wall of the inner cavity frame, a pressure dividing roller is rolled at the bottom of the inner cavity frame, and pressure dividing rubber rings are evenly installed on the surface of the pressure dividing roller.

[0012] Preferably, the pressure leveling unit for the adhesive material on the surface of the stretch film further includes a second leveling part, which includes an electric rotating arm installed inside the inner cavity groove. A pressure dividing roller is installed at an adjacent end of the electric rotating arm, and pressure dividing rubber rings are installed at equal intervals on the surface of the pressure dividing roller.

[0013] Preferably, the second pressure roller and the first pressure roller are of equal length, and the first pressure roller and the second pressure roller are arranged alternately.

[0014] Preferably, the width of the second pressure-dividing rubber ring is greater than or equal to the spacing width between adjacent first pressure-dividing rubber rings.

[0015] Preferably, the second pressure-distributing rubber ring is set to 5 cm, and the spacing between adjacent first pressure-distributing rubber rings is set to 4.8 cm.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. During use, since the base film guide roller is set at a higher height than the base film pressure roller one, after the electromagnetic spray pipe at the bottom of the liquid tank sprays the liquid onto the base film surface perpendicularly through the electromagnetic spray valve, the operator will laminate another set of base films onto the surface of the bottom base film sprayed with the liquid. Then, the double base films will move under the conveying of the base film pressure roller one. The base film pressure roller two at the top of the base film pressure roller one can pressurize and stabilize the top of the double base films to ensure that the tackifying liquid between the double base films is evenly spread.

[0018] 2. During use, the top area of ​​the top base film can be rolled by the pressure roller at the bottom of the inner cavity frame. When the top base film is rolled by the pressure roller, the top base film can better adhere to the bottom base film. At the same time, the adhesive clumps on the protruding part of the top base film that is rolled will be crushed by the pressure roller's surface adhesive ring, so that the adhesive clumps can be quickly spread and dispersed, so that the top base film and the bottom base film can be effectively bonded and fixed, ensuring the composite strength of the double base film. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall device of this utility model;

[0020] Figure 2 This is a schematic diagram of the base film guide roller part in this utility model;

[0021] Figure 3 This is a schematic diagram of the adhesive frame portion of the present invention;

[0022] Figure 4 This is a schematic diagram of the inner cavity frame and liquid tank in this utility model;

[0023] Figure 5 This is a schematic diagram of the pressure-distributing rubber ring one and the pressure-distributing rubber ring two parts in this utility model.

[0024] In the diagram: 1. Support frame; 2. Mounting plate; 3. Base film guide roller; 4. Base film pressure roller one; 5. Base film pressure roller two; 6. Tackifier adhesive frame; 61. Adhesive frame cavity; 62. Vertical guide rail; 63. Fixing seat; 7. Liquid tank; 71. Electromagnetic nozzle; 8. Inner cavity frame; 81. Inner cavity groove; 82. Electric rotating arm; 83. Pressure dividing roller one; 84. Pressure dividing adhesive ring one; 9. Pressure dividing roller two; 91. Pressure dividing adhesive ring two. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-5 This utility model provides a technical solution:

[0027] Example 1: A composite device for producing stretch film: including a support frame 1, a mounting plate 2, a base film guide roller 3 and a base film pressure roller 4. The mounting plate 2 is installed on one side of the support frame 1, wherein the base film guide roller 3 is installed at one end of the mounting plate 2, the base film pressure roller 4 is installed on the surface of the mounting plate 2 near the bottom area of ​​the mounting plate 2, and a base film pressure roller 5 is installed on the mounting plate 2 near the top area.

[0028] The tackifier material pressure leveling unit for the stretch film surface is set between adjacent mounting plates 2. It is used to guide and level the tackifier material sprayed on the base film surface, thereby assisting in the winding and lamination of multiple base films.

[0029] The pressure leveling unit for the tackifier material on the surface of the stretch film includes a spraying section, which includes an tackifier cartridge 6. The tackifier cartridge 6 is installed between adjacent mounting plates 2. The tackifier cartridge 6 has a cartridge cavity 61 inside. A vertical guide rail 62 is embedded in the inner wall of the cartridge cavity 61. A fixed seat 63 is installed on the moving end of the vertical guide rail 62. A liquid tank 7 is installed on one side of the fixed seat 63. An electromagnetic spray pipe 71 is installed at the bottom of the liquid tank 7. Electromagnetic spray valves are spaced apart at the bottom of the electromagnetic spray pipe 71.

[0030] In this embodiment, after the electromagnetic nozzle 71 at the bottom of the liquid tank 7 sprays liquid perpendicularly to the surface of the base film through the electromagnetic spray valve, the operator applies another set of base film composites to the surface of the bottom base film after the liquid is sprayed. Then, the double base film moves under the conveying of the base film pressure roller 4. The base film pressure roller 5 at the top of the base film pressure roller 4 can pressurize and stabilize the top of the double base film to ensure that the tackifying liquid between the double base films is evenly spread.

[0031] The pressure leveling unit for the surface tackifier material of the stretch film also includes a first leveling part, which includes an inner cavity frame 8. An inner cavity groove 81 is provided on the inner wall of the inner cavity frame 8. A pressure roller 83 is rolled at the bottom of the inner cavity frame 8. Pressure rollers 84 are installed at equal intervals on the surface of the pressure roller 83.

[0032] The pressure leveling unit for the adhesive material on the surface of the stretch film also includes a second leveling section, which includes an electric rotating arm 82. The electric rotating arm 82 is installed inside the inner cavity groove 81. A pressure dividing roller 9 is installed at the end of the adjacent electric rotating arm 82. Pressure dividing rubber rings 91 are installed at equal intervals on the surface of the pressure dividing roller 9.

[0033] The pressure roller 2 9 and the pressure roller 1 83 are set to the same length, and the pressure rubber ring 1 84 and the pressure rubber ring 2 91 are arranged alternately.

[0034] The width of pressure dividing ring 291 is greater than or equal to the spacing between adjacent pressure dividing rings 184.

[0035] The pressure dividing ring 2 (91) is set to 5 cm, and the spacing between adjacent pressure dividing rings 1 (84) is set to 4.8 cm.

[0036] In this embodiment, when the top base film is rolled by the pressure dividing roller 83, the top base film can better adhere to the bottom base film. At the same time, the adhesive clumps on the protruding part of the top base film that is rolled will be dispersed by the pressure dividing adhesive ring 84 on the surface of the pressure dividing roller 83, thereby allowing the adhesive clumps to be quickly spread and dispersed, so that the top base film and the bottom base film can be effectively bonded and fixed together, ensuring the composite strength of the double base film.

[0037] Working principle: During the use of this device, the operator guides the base film to be processed to the top of the base film guide roller 3, and then passes one end of the base film through the base film pressure roller 4 and the base film pressure roller 5. Then, the operator can move the fixed seat 63 installed in the glue frame cavity 61 inside the tackifier glue frame 6 by driving it. The fixed seat 63 is driven by the vertical guide rail 62 to slowly move downward. Since the base film guide roller 3 is set at a higher height than the base film pressure roller 4, after the electromagnetic spray pipe 71 at the bottom of the liquid tank 7 sprays the liquid perpendicular to the base film surface through the electromagnetic spray valve, the operator will laminate another set of base films onto the surface of the bottom base film that has been sprayed with liquid. Then, the double base film moves under the conveying of the base film pressure roller 4. The base film pressure roller 5 at the top of the base film pressure roller 4 can pressurize and stabilize the top of the double base film to ensure that the tackifier liquid between the double base films is evenly spread.

[0038] After the top base film is adhered to the surface of the bottom base film, in order to ensure the adhesion effect between the top base film and the bottom base film, the top area of ​​the top base film can be rolled by the pressure roller 83 at the bottom of the inner cavity frame 8. When the top base film is rolled by the pressure roller 83, the top base film can better adhere to the bottom base film. At the same time, the adhesive clumps of the protruding part of the top base film that is rolled will be crushed by the pressure roller 84 on the surface of the pressure roller 83, so that the adhesive clumps can be quickly spread and dispersed, so that the top base film and the bottom base film can be effectively bonded and fixed, ensuring the composite strength of the double base film.

[0039] After the top base film is rolled by the pressure roller 83, in order to avoid excessive accumulation of adhesive clumps in the arrangement gap area between adjacent pressure rollers 84, the pressure roller 9 can be rotated and pressed onto the surface of the top base film by driving the electric rotating arm 82. The pressure rollers 91 arranged at intervals on the surface of the pressure roller 9 can roll and spread the adhesive clumps accumulated in the arrangement gap area between adjacent pressure rollers 84, further ensuring the effective adhesion and bonding of the top base film and the bottom base film, and further ensuring the composite strength of the double base film.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite device for producing a wrapping film, characterized by: It includes support frame (1), installation disc (2), base film guide roller (3) and base film pressure roller one (4), the installation disc (2) is installed in the support frame (1) one side, wherein the base film guide roller (3) is installed in the installation disc (2) one end, the base film pressure roller one (4) is installed in the installation disc (2) surface near the installation disc (2) bottom area, the installation disc (2) near the top area is installed with base film pressure roller two (5); The wrapping film surface tackifier material pressure flattening unit is arranged between adjacent installation discs (2), which is used for guiding and flattening the tackifier glue sprayed on the base film surface, so as to assist the wrapping and compounding of the multi-layer base film.

2. The composite apparatus for producing a wrapping film according to claim 1, characterized in that: The wrapping film surface tackifier material pressure flattening unit includes a spraying part, the spraying part includes a tackifier glue frame (6), the tackifier glue frame (6) is installed between adjacent installation discs (2), the tackifier glue frame (6) is internally provided with a glue frame cavity (61), a vertical guide rail (62) is embeddedly installed in the inner wall of the glue frame cavity (61), a fixed seat (63) is installed on the moving end of the vertical guide rail (62), a liquid material bin (7) is installed on one side of the fixed seat (63), an electromagnetic spray pipe (71) is installed at the bottom of the liquid material bin (7), and an electromagnetic spray valve is arranged at the bottom of the electromagnetic spray pipe (71).

3. The composite apparatus for producing a wrapping film according to claim 2, characterized in that: The wrapping film surface tackifier material pressure flattening unit further includes a first flattening part, the first flattening part includes an inner cavity frame (8), an inner cavity groove (81) is formed in the inner wall of the inner cavity frame (8), and a pressure roller one (83) is rollingly installed at the bottom of the inner cavity frame (8).

4. The composite apparatus for producing a wrapping film according to claim 3, characterized in that: The wrapping film surface tackifier material pressure flattening unit further includes a second flattening part, the second flattening part includes an electric rotating arm (82), the electric rotating arm (82) is installed in the inner cavity groove (81), a pressure roller two (9) is installed at the end of adjacent electric rotating arms (82), and a pressure ring two (91) is installed on the surface of the pressure roller two (9).

5. The composite apparatus for producing a wrapping film according to claim 4, characterized in that: The pressure roller two (9) and the pressure roller one (83) are arranged in equal length, and the pressure ring one (84) and the pressure ring two (91) are staggered and arranged.

6. The composite apparatus for producing a wrapping film according to claim 4, characterized in that: The width of the pressure ring two (91) is greater than or equal to the arrangement interval width between adjacent pressure ring one (84).

7. The composite apparatus for producing a wrapping film according to claim 4, characterized in that: The pressure ring two (91) is set to 5CM, and the arrangement interval width between adjacent pressure ring one (84) is set to 4.8CM.

Images