Degradable plastic product processing technology

Abstract

The invention relates to the technical field of degradable plastic product processing, in particular to a degradable plastic product processing technology. Comprising the following steps that firstly, the degradable plastic film which is conducted in the one-way mode is flattened and conveyed, and the flattening and conveying direction is horizontal and consistent with the one-way conduction direction; secondly, when the degradable plastic film is conveyed to the fixed-point machining position, conveying of the degradable plastic film is stopped, and hot pressing is conducted on the degradable plastic film to form a seal; thirdly, the degradable plastic film is cut by the side, facing the conveying direction, beside the sealing opening to form a notch; and 4, movable self-adhesive paper is fixedly attached to the side, facing the conveying direction, beside the notch on the degradable plastic film, so that the degradable plastic product can be reinforced, and the situation that the bag body is prone to being damaged after being formed is avoided.

Description

Technical Field

[0001] This invention relates to the field of biodegradable plastic product processing technology, and more specifically to a biodegradable plastic product processing technology. Background Technology

[0002] The purpose of producing biodegradable plastic products is to reduce environmental pollution caused by the use of single-use items. For example, single-use biodegradable plastic bags, although they have a certain degree of degradability, are prone to breakage, which leads to a poor user experience. For instance, when a plastic bag is carrying heavy objects, it may suddenly break, or the bag may be pierced by an object with a right angle, or the bottom of the bag may be damaged, or the handle may break due to the stretching caused by gravity, resulting in items slipping out of the user's hands or scattering, causing inconvenience and loss to the user, and indirectly increasing the amount of biodegradable plastic bags used. Therefore, the development of biodegradable plastic products should return to the fundamental issues of practicality and reducing usage. Summary of the Invention

[0003] This invention provides a processing technology for biodegradable plastic products, which has the beneficial effect of strengthening biodegradable plastic products.

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

[0005] A process for processing biodegradable plastic products includes the following steps:

[0006] Step 1: Flatten and convey the unidirectional biodegradable plastic film, with the flattening and conveying direction being horizontal and consistent with the unidirectional direction;

[0007] Step 2: When the biodegradable plastic film is transported to the designated processing location, stop the transport of the biodegradable plastic film and heat-press it to form a seal.

[0008] Step 3: Cut the biodegradable plastic film to form a slit on the side next to the seal and facing the conveying direction;

[0009] Step 4: Secure the removable adhesive paper to the biodegradable plastic film next to the cut and on the side facing the conveying direction.

[0010] Step 5: Repeat steps 1 to 3 to move the biodegradable plastic film to the next processing location for repeated processing, forming new seals and cuts, until the quantity reaches the expected level.

[0011] Step 6: Cut the biodegradable plastic film into segments to form single-opening plastic bags with slits. Attached Figure Description

[0012] Figure 1 A process flow diagram for processing a biodegradable plastic product;

[0013] Figure 2 This is a schematic diagram of the overall structure of a biodegradable plastic product processing device.

[0014] Figure 3 for Figure 2 Enlarged view of a portion of the image;

[0015] Figure 4 This is a structural schematic diagram of support frame I, rollers, drive wheel I, and drive wheel II;

[0016] Figure 5 This is a structural diagram of support frame II, reset rod I, motor I, transmission wheel III, transmission seat, support frame III, double-ended lead screw, motor II, synchronous transmission assembly and hot pressing component;

[0017] Figure 6 This is a structural schematic diagram of the base beam, straight groove, slider, cutter, base, reset rod II, pressure plate and tube;

[0018] Figure 7 for Figure 6 A schematic diagram of the structure from another perspective;

[0019] Figure 8 This is a partial structural diagram of a removable self-adhesive tape;

[0020] Figure 9 This is a schematic diagram of the structure of a single-opening plastic bag, including the seal, the cut, and the removable self-adhesive paper. Detailed Implementation

[0021] A process for processing biodegradable plastic products includes the following steps:

[0022] Step 1: The biodegradable plastic film, which is open in the left and right directions, is flattened and conveyed horizontally from left to right. During the conveying, the biodegradable plastic film is continuously released from the left side and pulled back from the right side.

[0023] Step 2: When the biodegradable plastic film is transported to the fixed processing position, stop the transport of the biodegradable plastic film and heat-press it to form a seal 4;

[0024] Step 3: Cut the biodegradable plastic film on the right side of the seal 4 to form a slit 5, which will serve as the structure for the tote bag.

[0025] Step 4: Next to the cut and on the side facing the conveying direction, attach removable self-adhesive paper 6 to both the top and bottom ends of the biodegradable plastic film to increase the strength near the handle;

[0026] Step 5: Repeat steps 1 to 3 to move the biodegradable plastic film to the next processing location for repeated processing, forming new seals 4 and cuts 5, until the quantity reaches the expected level;

[0027] Step Six: Cut the biodegradable plastic film into segments to form... Figure 9 The single-opening plastic bag 3 shown has a slit 5. The biodegradable plastic product can have a removable adhesive paper 6 peeled off from one side and attached to other locations, such as the bottom of the plastic bag 3 on both sides, forming a U-shaped structure, or the removable adhesive paper 6 can be attached to locations where the plastic bag 3 becomes lighter in color, stretched or more, or has holes after being filled with items.

[0028] The above-mentioned biodegradable plastic product processing technology is achieved using a biodegradable plastic product processing device, as referenced. Figures 2 to 4 The biodegradable plastic product processing device includes a support frame I11, on which two rollers 12 are rotatably connected. The two rollers 12 are distributed one above the other, and the axis of the rollers 12 extends in the front-back direction. A transmission wheel I13 is fixed to the rear end of each of the two rollers 12. The transmission wheel I13 is a gear to enable the two rollers 12 to mesh and drive, or it is a friction wheel to achieve frictional transmission. The transmission connection of the two transmission wheels I13 enables the two rollers 12 to rotate synchronously in opposite directions. A transmission wheel II14 is fixed to the front end of the lower roller 12.

[0029] To further explain, in combination Figure 5 It also includes a support frame II21, on which two vertical reset rods I22 are slidably connected. The upper end of each reset rod I22 is fixedly connected to a limit part I. The lower ends of all reset rods I22 are fixedly connected to the same motor I23. The output shaft of motor I23 faces rearward, and a transmission wheel III24 is fixedly connected to the output shaft of motor I23. Transmission wheel III24 is located above transmission wheel II14. Both transmission wheel II14 and transmission wheel III24 are friction wheels. A compression spring I is sleeved on each reset rod I22. The two ends of compression spring I abut against the support frame II21 and the motor I23 respectively. Compression spring I lifts... A downward force is applied to maintain the frictional transmission between transmission wheel II 14 and transmission wheel III 24. Motor I 23 drives transmission wheel III 24 to rotate counterclockwise, and transmission wheel III 24 drives transmission wheel II 14 to rotate clockwise. This causes the lower roller 12 to rotate clockwise, while the upper roller 12 rotates counterclockwise. This allows the biodegradable plastic film to be flattened and fed between the two rollers 12 for continuous rightward transport. At the same time, the right end of the biodegradable plastic film is pulled, or other roller mechanisms are used to wind up the biodegradable plastic film to maintain its horizontal flattening transport.

[0030] Further explanation includes a linear transmission mechanism, which includes a support frame Ⅲ31. Two vertical double-ended lead screws 32 are rotatably connected to the support frame Ⅲ31. The bottom of one of the double-ended lead screws 32 is fixedly connected to the output shaft of the motor Ⅱ33. The two double-ended lead screws 32 achieve synchronous transmission through a synchronous transmission assembly 34. The synchronous transmission assembly 34 is preferably a pulley and belt assembly. The upper and lower threads of the double-ended lead screws 32 have opposite directions of rotation. The upper hot pressing component 35 is spirally driven on the upper side of the two double-ended lead screws 32, and the lower hot pressing component 35 is spirally driven on the lower side of the two double-ended lead screws 32. The two hot pressing components 35 are respectively located on the upper and lower sides of the center of the two rollers 12. The two hot pressing components 35 are located on the right side of the rollers 12 and are close to the rollers 12. After the motor Ⅱ33 drives the double-ended lead screws 32 to rotate, the distance between the two hot pressing components 35 can be adjusted.

[0031] Preferably, the lower end of the motor I 23 is fixedly connected to the transmission seat 25, and the lower heat-pressing component 35 is attached to the lower end face of the transmission seat 25. When the two heat-pressing components 35 approach each other, the lower heat-pressing component 35 rises to push the transmission seat 25 to rise. The transmission seat 25 drives the motor I 23 to rise, thereby causing the transmission wheel II 14 and the transmission wheel III 24 to separate, stopping the conveying of the biodegradable plastic film in preparation for heat pressing.

[0032] The biodegradable plastic product processing device also includes a cutting and pressing mechanism. Two cutting and pressing mechanisms are provided, mirror-symmetrically in top and bottom. For ease of explanation, the upper cutting and pressing mechanism is used as an example. It includes: a base beam 41; a straight groove 42 on the base beam 41; a slider 43 slidably connected within the straight groove 42; the slider 43 can only slide left and right on the base beam 41; fasteners are screwed into the slider 43 from top to bottom to abut against the base beam 41, thus fixing the relative position of the slider 43 and the base beam 41; a cutter 44 is fixedly connected to the lower end of the slider 43; a base 51 is fixedly connected to the upper end of the base beam 41; two vertical reset rods II 52 are slidably connected to the base 51; and a limiting part II is fixedly connected to the upper end of the reset rods II 52. A pressure plate 53 is fixed to the lower end of the reset rod II 52. The pressure plate 53 is lower than the cutter 44. The pressure plate 53 is located near the right side of the cutter 44. It also includes a compression spring II sleeved on the reset rod II 52. The two ends of the compression spring II abut against the base 51 and the pressure plate 53 respectively. The upper base beam 41 is fixed to the upper end of the upper hot press 35. The lower base beam 41 is fixed to the lower end of the lower hot press 35. The pressure plate 53 has a cavity inside. The two pressure plates 53 have air holes on their end faces facing each other. The ends of the two pressure plates 53 away from each other are fixed and connected to a generating pipe 54. The pipe 54 is connected to an air source generating device, such as an air pump, that generates suction at the air holes. A blade 54 is fixed to each of the front and rear ends of the pressure plate 53.

[0033] Two layers of removable self-adhesive tape 1 with a width greater than that of the pressure plate 53 in the left-right direction are arranged. A row of notches 2 is set on each of the left and right sides of the removable self-adhesive tape 1. The adhesive side of the upper removable self-adhesive tape 1 faces down, and the adhesive side of the lower removable self-adhesive tape 1 faces up. The two layers of removable self-adhesive tape 1 are located between the two pressure plates 53. The left and right edges of the pressure plates 53 are respectively located directly above the two rows of notches 2. A biodegradable plastic film is located between the two layers of removable self-adhesive tape 1. The removable self-adhesive tape 1 is flattened and conveyed in the front-back direction. The conveying method can be achieved by the roller structure winding and releasing, or by mechanical or manual traction. During the hot pressing process to form the seal 4, the two base beams 41 move synchronously with the hot pressing component 35, so the two pressure plates 53 gradually approach each other. The blade 54 first cuts the removable self-adhesive tape 1, and the cut formed connects with the notch 2. As the pressure plate 53 pushes the removable self-adhesive tape 1, the notch 2 breaks, and the removable self-adhesive paper 6 is detached from the removable self-adhesive tape 1. The removable self-adhesive paper 6 is kept in an unfolded state by the adsorption of the pressure plate 53 to stick to the upper and lower ends of the plastic bag 3. On the other hand, the two cutters 44 also approach to cut the biodegradable plastic film to form the cut 5.

Claims

1. A processing technology for biodegradable plastic products, characterized in that, Includes the following steps: Step 1: Flatten and convey the unidirectional biodegradable plastic film, with the flattening and conveying direction being horizontal and consistent with the unidirectional direction; Step 2: When the biodegradable plastic film is transported to the designated processing position, stop the transport of the biodegradable plastic film and heat press it to form a seal (4); Step 3, sealing (4) Cut the biodegradable plastic film to form a slit (5) on the side facing the conveying direction; Step 4: Next to the cut (5) and facing the conveying direction, attach a removable adhesive paper (6) to the biodegradable plastic film.

2. According to the biodegradable plastic product processing technology of claim 1, step five is to repeat steps one to three so that the next position of the biodegradable plastic film is moved to the fixed processing position for repeated processing to form a new seal (4) and cut (5) until the quantity reaches the expected amount.

3. According to the biodegradable plastic product processing technology of claim 2, step six is ​​to cut the biodegradable plastic film into segments to form a single-opening plastic bag (3) with a cut (5).

4. The biodegradable plastic product processing technology according to claim 1 is implemented using a biodegradable plastic product processing device, the biodegradable plastic product processing device includes a support frame I (11), two rollers (12) are rotatably connected on the support frame I (11), a transmission wheel I (13) is fixedly connected to the rear end of each of the two rollers (12), the transmission wheel I (13) is connected to drive so that the two rollers (12) rotate synchronously in opposite directions, and a transmission wheel II (14) is fixedly connected to the front end of the lower roller (12); It also includes a support frame II (21), on which multiple reset rods I (22) are slidably connected. The upper end of the reset rod I (22) is fixedly connected to a limit part I. The lower end of all the reset rods I (22) is fixedly connected to the same motor I (23). The output shaft of the motor I (23) is fixedly connected to a transmission wheel III (24). A compression spring is sleeved on the reset rod I (22). The two ends of the compression spring abut against the support frame II (21) and the motor I (23) respectively. The transmission wheel II (14) is connected to the transmission wheel III (24) in a transmission connection. It also includes a linear drive mechanism and two hot presses (35) whose spacing is adjusted by the linear drive mechanism. The two hot presses (35) are located on the upper and lower sides of the center of the two rollers (12), respectively.

5. According to the biodegradable plastic product processing technology of claim 4, the linear transmission mechanism includes a support frame III (31), on which two double-ended lead screws (32) are rotatably connected. One of the double-ended lead screws (32) is driven to rotate by a motor II (33), and the two double-ended lead screws (32) are synchronously transmitted through a synchronous transmission assembly (34). The upper and lower threads of the double-ended lead screws (32) have opposite directions of rotation, and two hot pressing parts (35) are respectively spirally driven on the upper and lower sides of all the double-ended lead screws (32).

6. In the biodegradable plastic product processing technology according to claim 4, the transmission wheel I (13) is a gear or a friction wheel.

7. In the biodegradable plastic product processing technology according to claim 4, the transmission wheel II (14) is a friction wheel.

8. In the biodegradable plastic product processing technology according to claim 4, the synchronous transmission component (34) is a pulley and belt assembly.

9. The biodegradable plastic product processing technology according to claim 4, wherein the biodegradable plastic product processing apparatus further includes a cutting and pressing mechanism, the cutting and pressing mechanism comprising: A base beam (41), a straight slot (42) set on the base beam (41), a slider (43) slidably connected in the straight slot (42), a fastener screwed into the slider (43) to abut against the base beam (41), a cutter (44) fixedly connected to the lower end of the slider (43), a base (51) fixedly connected to the base beam (41), two reset rods II (52) slidably connected to the base (51), a limiting part II fixedly connected to the upper end of the reset rod II (52), a pressure plate (53) fixedly connected to the lower end of the reset rod II (52), and a compression spring II sleeved on the reset rod II (52). The two ends of the compression spring II abut against the base (51) and the pressure plate (53) respectively. The cutting and pressing mechanism is provided in two mirror images, and the two base beams (41) are fixedly connected to two hot pressing parts (35) respectively.

10. The biodegradable plastic product processing technology according to claim 9, wherein the pressure plate (53) has a cavity inside, the two pressure plates (53) have air holes on their end faces facing each other, and the ends of the two pressure plates (53) away from each other are fixedly connected to and connected to a generating pipe (54), and the pipe (54) is connected to an air source generating device that generates suction at the air holes.

Images