Packaging bag and processing method thereof

Abstract

The invention relates to the field of packaging bag processing, in particular to a packaging bag and a processing method thereof. The method comprises the following steps: step 1, respectively putting two raw materials into a processing device; 2, respectively heating and stirring the two raw materials; 3, the two raw materials in the molten state are subjected to centrifugal degassing; 4, carrying out a film blowing process on the two raw materials; and 5, laminating the two prepared plastic films to form the composite film. Wherein the processing device comprises a top cover, a rotating plate I is rotationally connected in the top cover, rotating shafts II are rotationally connected to the inner side and the outer side of the rotating plate I respectively, a gear is fixedly connected to each rotating shaft II, and a stirring rod is fixedly connected to each rotating shaft II; a gear ring II and a gear ring I are fixedly connected to the inner side and the outer side of the top cover respectively, the gears located on the outer side are all connected with the gear ring I in a meshed mode, and the gears located on the inner side are all connected with the gear ring II in a meshed mode. The invention aims to simultaneously carry out a film blowing process and a composite film process, improve the preparation efficiency of the packaging bag and save resources.

Description

Technical Field

[0001] This invention relates to the field of packaging bag processing, and more specifically to a packaging bag and its processing method. Background Technology

[0002] Currently, packaging bags are widely used in our daily lives and work due to their convenience in use and carrying. Among various packaging bags, plastic bags are particularly widely used because of their unique sealing and lightweight properties. Plastic packaging bags include polyethylene plastic bags, polypropylene plastic bags, and polyvinyl chloride plastic bags. They not only protect products and facilitate storage and transportation, but also promote sales and beautify products. In the production of plastic packaging bags, plastic granules are melted using an extruder, and then the molten material is further heated to the optimal temperature required for film blowing using a blown film device. The molten material overflows evenly from the annular interlayer, and then air is blown evenly from inside the annular interlayer to blow the molten material into a plastic film. At the same time, according to the actual needs of different plastic bag performance, it is necessary to laminate two plastic films. Performing the blown film and lamination processes simultaneously can improve efficiency and save resources. Therefore, a packaging bag and its processing method are designed. Summary of the Invention

[0003] This invention provides a packaging bag and its processing method, which aims to simultaneously perform blown film processing and composite film processing, thereby improving the production efficiency of the packaging bag and saving resources.

[0004] The above objectives are achieved through the following technical solutions:

[0005] A method for processing packaging bags, the method comprising the following steps:

[0006] Step 1: Place the two raw materials into the processing device separately;

[0007] Step 2: Heat and stir the two raw materials separately;

[0008] Step 3: Centrifuge and degas the two raw materials in the molten state separately;

[0009] Step 4: Perform blown film processing on the two raw materials;

[0010] Step 5: Lay the two plastic films together to form a composite film.

[0011] The two raw materials used in step one are PE (polyethylene) and OPP (o-phenylphenol).

[0012] The processing device includes a top cover, a rotating plate I rotatably connected inside the top cover, and a rotating shaft II rotatably connected to the inner and outer sides of the rotating plate I, respectively. A gear is fixedly connected to each rotating shaft II, and a stirring rod is fixedly connected to each rotating shaft II. A gear ring II and a gear ring I are fixedly connected to the inner and outer sides of the top cover, respectively. The gears on the outer side are all meshed with the gear ring I, and the gears on the inner side are all meshed with the gear ring II.

[0013] A rotating shaft I is rotatably connected to the top cover, passing through the top cover and fixedly connected to a rotating plate I; a gear box is fixedly connected to the top cover, with the rotating shaft I passing through the gear box and a bevel gear I fixedly connected to the rotating shaft I; a bevel gear II is rotatably connected inside the gear box, and bevel gear I and bevel gear II are meshed together; a motor is fixedly connected to the gear box, with the motor's output shaft passing through the gear box and fixedly connected to the bevel gear II; a bracket is fixedly connected to the top cover, with its upper end fixedly connected to the motor.

[0014] The rotating plate I is provided with a sliding groove I on the outer side and a sliding groove II on the inner side; a ring plate I is slidably connected in the sliding groove I, and a feed pipe I is connected to the ring plate I; a ring plate II is slidably connected in the sliding groove II, and a feed pipe II is connected to the ring plate II; both the feed pipe I and the feed pipe II pass through the top cover.

[0015] A partition I is fixedly connected to the bottom of the top cover, a sieve plate is fixedly connected to the bottom of the partition I, and a partition II is fixedly connected to the sieve plate; a collection cylinder I located on the outer side and a collection cylinder II located on the inner side are fixedly connected to the bottom of the sieve plate.

[0016] The rotating shaft I passes through the sieve plate, and the lower end of the rotating shaft I is fixedly connected to the rotating plate II. The outer sieve cylinder I and the inner sieve cylinder II are fixedly connected to the rotating plate II. The sieve cylinder I is in close contact with the inner side of the collecting cylinder I, and the sieve cylinder II is in close contact with the inner side of the collecting cylinder II. The outer side of the sieve cylinder I is fixedly connected to the spiral blade I, and the outer side of the sieve cylinder II is fixedly connected to the spiral blade II.

[0017] A base is fixedly connected to the bottom of the collecting cylinder II, and an extrusion pipe I and an extrusion pipe II are fixedly connected to the bottom of the base. A nozzle I is connected to the extrusion pipe I, and a nozzle II is connected to the extrusion pipe II.

[0018] A rotating shaft III is fixedly connected to the lower part of the rotating shaft I, and multiple fan blades are fixedly connected to the rotating shaft III; a protective shell is fixedly connected to the lower part of the chassis, located outside the multiple fan blades.

[0019] A medicine tank is fixedly connected to the bottom of the chassis, and a connecting pipe is connected to the medicine tank, with a nozzle III connected to the connecting pipe.

[0020] The beneficial effects of the packaging bag and its processing method of the present invention are as follows:

[0021] Compared to traditional packaging bags and their processing methods, this invention uses gear ring I and gear ring II to drive stirring rods located on the inner and outer sides to rotate, thereby simultaneously stirring two raw materials; centrifuging and degassing the two molten raw materials through sieve cylinder I and sieve cylinder II respectively improves the quality of film formation; when the two films are blown out, adhesive liquid is sprayed onto the inner side of the two films, and the temperature during film formation is used for bonding, thereby improving efficiency and saving resources. Attached Figure Description

[0022] Figure 1 A flowchart of a packaging bag and its processing method;

[0023] Figure 2 This is a schematic diagram of the overall structure of the processing device;

[0024] Figure 3 This is a schematic cross-sectional view of the processing equipment;

[0025] Figure 4 This is a schematic diagram of the structure of the rotating plate I;

[0026] Figure 5 This is a schematic diagram of the stirring rod.

[0027] Figure 6 Here are schematic diagrams of the structures of ring plate I and ring plate II;

[0028] Figure 7 This is a schematic diagram of the structure of partition I and partition II;

[0029] Figure 8 This is a schematic diagram of the installation of collection cylinder I and collection cylinder II;

[0030] Figure 9 Here are schematic diagrams of the structures of collecting cylinder I and collecting cylinder II;

[0031] Figure 10 This is a schematic diagram of the structure of spiral plate I and spiral plate II;

[0032] Figure 11 This is a schematic diagram of the structure of the rotating plate II;

[0033] Figure 12 This is a schematic diagram of the structure of extrusion tube I and extrusion tube II;

[0034] Figure 13 This is a schematic diagram of the cross-sectional structure of extrusion tube I and extrusion tube II.

[0035] In the diagram: Top cover 101; Rotating shaft I 102; Gear box 103; Bevel gear I 104; Bevel gear II 105; Motor 106; Bracket 107; Gear ring I 108; Gear ring II 109; Rotating plate I 201; Slide groove I 202; Slide groove II 203; Rotating shaft II 204; Gear 205; Stirring rod 206; Ring plate I 207; Feed pipe I 208; Ring plate II 209; Feed pipe II 210; Partition plate I 301; Partition plate II 302; sieve plate 303; collecting cylinder I 401; collecting cylinder II 402; rotating plate II 501; sieve cylinder I 502; spiral blade I 503; sieve cylinder II 504; spiral blade II 505; chassis 601; extrusion tube I 602; nozzle I 603; extrusion tube II 604; nozzle II 605; rotating shaft III 701; protective shell 702; fan blade 703; agent tank 801; connecting pipe 802; nozzle III 803. Detailed Implementation

[0036] A packaging bag and a method for processing the same, the method comprising the following steps:

[0037] Step 1: Place the two raw materials into the processing device separately;

[0038] Step 2: Heat and stir the two raw materials separately;

[0039] Step 3: Centrifuge and degas the two raw materials in the molten state separately;

[0040] Step 4: Perform blown film processing on the two raw materials;

[0041] Step 5: Lay the two plastic films together to form a composite film.

[0042] The packaging bags use two raw materials: PE (polyethylene) and OPP (o-phenylphenol). The composite film made of PE and OPP has good moisture resistance and oil resistance.

[0043] See Figure 1-13 The diagram shows an embodiment of the present invention in which 12 rotating shafts II204 are driven to rotate by gear rings II109 and I108, and further,

[0044] The processing device includes a top cover 101, a rotating plate I 201 rotatably connected inside the top cover 101, and six rotating shafts II 204 rotatably connected to the inner and outer sides of the rotating plate I 201, respectively. A gear 205 is fixedly connected to each rotating shaft II 204, and a stirring rod 206 is fixedly connected to each rotating shaft II 204. Gear rings II 109 and I 108 are fixedly connected to the inner and outer sides of the top cover 101, respectively. The six gears 205 on the outer side are all meshed with gear rings I 108, and the six gears 205 on the inner side are all meshed with gear rings II 109.

[0045] The top cover 101 provides an installation position for the rotating plate I 201; the rotation of the rotating plate I 201 can drive a total of 12 rotating shafts II 204 on both the inner and outer sides to rotate, and at the same time drive 12 gears 205 to rotate; during the rotation of the 6 gears 205 on the outer side, they rotate around the corresponding rotating shaft II 204 under the action of the gear ring I 108; similarly, each gear 205 on the inner side rotates around the corresponding rotating shaft II 204; at this time, the stirring rods 206 on the inner and outer sides respectively rotate and revolve simultaneously, stirring the raw materials on the inner and outer sides that enter the processing device.

[0046] See Figure 1-13 A schematic diagram of an embodiment of the present invention in which the rotating plate I201 is driven to rotate by the motor 106 is shown. Further,

[0047] A rotating shaft I 102 is rotatably connected to the top cover 101, passing through the top cover 101 and fixedly connected to the rotating plate I 201; a gear box 103 is fixedly connected to the top cover 101, the rotating shaft I 102 passes through the gear box 103, a bevel gear I 104 is fixedly connected to the rotating shaft I 102, a bevel gear II 105 is rotatably connected inside the gear box 103, and the bevel gear I 104 and bevel gear II 105 are meshed; a motor 106 is fixedly connected to the gear box 103, the output shaft of the motor 106 passes through the gear box 103, and the output shaft of the motor 106 is fixedly connected to the bevel gear II 105; a bracket 107 is fixedly connected to the top cover 101, and the upper end of the bracket 107 is fixedly connected to the motor 106.

[0048] Motor 106 drives bevel gear II 105 to rotate via output shaft. The rotation of bevel gear II 105 drives bevel gear I 104 to rotate, which in turn drives rotating shaft I 102 to rotate. The rotation of rotating shaft I 102 can drive rotating plate I 201 to rotate. Gear box 103 can protect bevel gear I 104 and bevel gear II 105. Bracket 107 can support motor 106.

[0049] See Figure 1-13 A schematic diagram of an embodiment of the present invention, showing the addition of raw materials to a processing apparatus via feed pipe I 208 and feed pipe II 210, is shown. Further,

[0050] The rotating plate I201 is provided with a sliding groove I202 on the outer side and a sliding groove II203 on the inner side; a ring plate I207 is slidably connected in the sliding groove I202, and a feed pipe I208 is connected to the ring plate I207; a ring plate II209 is slidably connected in the sliding groove II203, and a feed pipe II210 is connected to the ring plate II209; both the feed pipe I208 and the feed pipe II210 pass through the top cover 101.

[0051] Both slides I 202 and slide II 203 have through holes at their bottom, allowing feed pipes I 208 and II 210 to connect with the bottom of the rotating plate I 201. Slides I 202 and slide II 203 can restrict the movement trajectory of ring plates I 207 and II 209, thus preventing feed pipes I 208 and II 210 from rotating with the rotating plate I 201 when the rotating plate I 201 rotates.

[0052] See Figure 1-13 A schematic diagram of an embodiment of the installation of the sieve plate 303 according to the present invention is shown. Further,

[0053] A partition I 301 is fixedly connected to the bottom of the top cover 101, a sieve plate 303 is fixedly connected to the bottom of the partition I 301, and a partition II 302 is fixedly connected to the sieve plate 303; a collection cylinder I 401 located on the outer side and a collection cylinder II 402 located on the inner side are fixedly connected to the bottom of the sieve plate 303.

[0054] Partition plates I 301 and II 302, along with rotating plates I 201 and sieve plates 303 on the upper and lower sides, form two cavities. Two raw materials enter the two cavities respectively and are stirred by stirring rods 206 on the inner and outer sides. Simultaneously, the two cavities are heated, causing the two raw materials to melt and pass through the sieve plate 303 for screening. Collection cylinder I 401 on the outer side and collection cylinder II 402 on the inner side are fixed below the sieve plate 303, preventing them from rotating with the rotating shaft I 102.

[0055] See Figure 1-13 The diagram shows an embodiment of the present invention in which molten raw material is extruded downwards by spiral blade I 503 and spiral blade II 505. Further,

[0056] The rotating shaft I102 passes through the sieve plate 303. The lower end of the rotating shaft I102 is fixedly connected to the rotating plate II501. The sieve cylinder I502 located on the outer side and the sieve cylinder II504 located on the inner side are fixedly connected to the rotating plate II501. The sieve cylinder I502 is in close contact with the inner side of the collecting cylinder I401, and the sieve cylinder II504 is in close contact with the inner side of the collecting cylinder II402. The spiral blade I503 is fixedly connected to the outer side of the sieve cylinder I502, and the spiral blade II505 is fixedly connected to the outer side of the sieve cylinder II504.

[0057] The two raw materials passing through the sieve plate 303 fall onto the rotating plate II 501. At this time, the rotating plate II 501 rotates with the rotating shaft I 102, thereby throwing the two molten raw materials outwards respectively, and entering the collecting cylinders I 401 and II 402 respectively through the sieve cylinders I 502 and II 504. The spiral blades I 503 and II 505 rotate with the sieve cylinders I 502 and II 504 respectively, thereby pressing the raw materials entering the collecting cylinders I 401 and II 402 downwards.

[0058] See Figure 1-13 The diagram shows an embodiment of the present invention in which two raw materials are extruded separately through nozzle I 603 and nozzle II 605, and further,

[0059] A base plate 601 is fixedly connected to the bottom of the collecting cylinder II 402. An extrusion pipe I 602 and an extrusion pipe II 604 are fixedly connected to the bottom of the base plate 601. A nozzle I 603 is connected to the extrusion pipe I 602, and a nozzle II 605 is connected to the extrusion pipe II 604.

[0060] The two raw materials extruded downward from collecting cylinder I 401 and collecting cylinder II 402 flow through extrusion tube I 602 and extrusion tube II 604 respectively, and are then extruded from nozzle I 603 and nozzle II 605 respectively, and are blown into film by strong airflow.

[0061] See Figure 1-13 A schematic diagram of an embodiment of the present invention in which airflow is formed by the rotation of a plurality of fan blades 703 is shown. Further,

[0062] A rotating shaft Ⅲ 701 is fixedly connected to the lower part of the rotating shaft Ⅰ 102, and multiple fan blades 703 are fixedly connected to the rotating shaft Ⅲ 701; a protective shell 702 is fixedly connected to the lower part of the chassis 601, located on the outside of the multiple fan blades 703.

[0063] The rotating shaft III 701 rotates following the rotating shaft I 102. The rotation of the rotating shaft III 701 can drive multiple fan blades 703 to rotate, thereby forming an airflow. The protective shell 702 can protect the inner fan blades 703. The airflow can assist the blown film process and evenly cover the inner side of the two plastic films with adhesive liquid.

[0064] See Figure 1-13 A schematic diagram of an embodiment of the present invention, in which adhesive liquid is sprayed through nozzle III803, is shown. Further,

[0065] A medicine tank 801 is fixedly connected to the bottom of the chassis 601. A connecting pipe 802 is connected to the medicine tank 801, and a nozzle Ⅲ 803 is connected to the connecting pipe 802.

[0066] The reagent container 801 is used to hold the adhesive liquid, which is sprayed out from the nozzle Ⅲ 803 through the connecting pipe 802 and sprayed onto the inner side of the two plastic films, directly bonding the two plastic films. This saves the process of cooling and then heating the plastic films, thereby improving the processing efficiency of the composite film and saving costs.

Claims

1. A method for processing packaging bags, characterized in that, The method includes the following steps: Step 1: Place the two raw materials into the processing device separately; Step 2: Heat and stir the two raw materials separately; Step 3: Centrifuge and degas the two raw materials in the molten state separately; Step 4: Perform blown film processing on the two raw materials; Step 5: Lay the two plastic films together to form a composite film.

2. The packaging bag manufactured by the packaging bag processing method according to claim 1, characterized in that, The packaging bags are made from two raw materials: PE (polyethylene) and OPP (o-phenylphenol).

3. The packaging bag processing method according to claim 1, characterized in that, The processing device includes a top cover (101), a rotating plate I (201) is rotatably connected inside the top cover (101), and six rotating shafts II (204) are rotatably connected to the inner and outer sides of the rotating plate I (201), a gear (205) is fixedly connected to each rotating shaft II (204), and a stirring rod (206) is fixedly connected to each rotating shaft II (204); a gear ring II (109) and a gear ring I (108) are fixedly connected to the inner and outer sides of the top cover (101), the six gears (205) on the outer side are all meshed with the gear ring I (108), and the six gears (205) on the inner side are all meshed with the gear ring II (109).

4. The packaging bag processing method according to claim 3, characterized in that, A rotating shaft I (102) is rotatably connected to the top cover (101), the rotating shaft I (102) passes through the top cover (101), and the rotating shaft I (102) is fixedly connected to the rotating plate I (201); a gear box (103) is fixedly connected to the top cover (101), the rotating shaft I (102) passes through the gear box (103), a bevel gear I (104) is fixedly connected to the rotating shaft I (102), and a bevel gear I (104) is rotatably connected inside the gear box (103). Gear II (105), bevel gear I (104) and bevel gear II (105) are meshed together; a motor (106) is fixedly connected to the gear box (103), the output shaft of the motor (106) passes through the gear box (103), and the output shaft of the motor (106) is fixedly connected to the bevel gear II (105); a bracket (107) is fixedly connected to the top cover (101), and the upper end of the bracket (107) is fixedly connected to the motor (106).

5. The packaging bag processing method according to claim 4, characterized in that, The rotating plate I (201) is provided with a sliding groove I (202) on the outer side and a sliding groove II (203) on the inner side; a ring plate I (207) is slidably connected in the sliding groove I (202), and a feed pipe I (208) is connected to the ring plate I (207); a ring plate II (209) is slidably connected in the sliding groove II (203), and a feed pipe II (210) is connected to the ring plate II (209); both the feed pipe I (208) and the feed pipe II (210) pass through the top cover (101).

6. The packaging bag processing method according to claim 5, characterized in that, A partition I (301) is fixedly connected to the bottom of the top cover (101), a sieve plate (303) is fixedly connected to the bottom of the partition I (301), and a partition II (302) is fixedly connected to the sieve plate (303); a collection cylinder I (401) located on the outer side and a collection cylinder II (402) located on the inner side are fixedly connected to the bottom of the sieve plate (303).

7. A method for processing packaging bags according to claim 6, characterized in that, The rotating shaft I (102) passes through the sieve plate (303). The lower end of the rotating shaft I (102) is fixedly connected to the rotating plate II (501). The rotating plate II (501) is fixedly connected to the outer sieve cylinder I (502) and the inner sieve cylinder II (504). The sieve cylinder I (502) is close to the inner side of the collecting cylinder I (401), and the sieve cylinder II (504) is close to the inner side of the collecting cylinder II (402). The outer side of the sieve cylinder I (502) is fixedly connected to the spiral blade I (503), and the outer side of the sieve cylinder II (504) is fixedly connected to the spiral blade II (505).

8. A method for processing packaging bags according to claim 7, characterized in that, A base plate (601) is fixedly connected to the bottom of the collecting cylinder II (402). An extrusion pipe I (602) and an extrusion pipe II (604) are fixedly connected to the bottom of the base plate (601). A nozzle I (603) is connected to the extrusion pipe I (602), and a nozzle II (605) is connected to the extrusion pipe II (604).

9. A method for processing packaging bags according to claim 8, characterized in that, A rotating shaft III (701) is fixedly connected to the lower part of the rotating shaft I (102), and multiple fan blades (703) are fixedly connected to the rotating shaft III (701); a protective shell (702) is fixedly connected to the lower part of the chassis (601), located outside the multiple fan blades (703).

10. A method for processing packaging bags according to claim 9, characterized in that, A medicine tank (801) is fixedly connected to the bottom of the chassis (601), and a connecting pipe (802) is connected to the medicine tank (801), and a nozzle III (803) is connected to the connecting pipe (802).

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