Degradable environment-friendly packaging bag and preparation process thereof

Abstract

The invention belongs to the technical field of packaging bag production, and particularly relates to a degradable environment-friendly packaging bag which is made of non-woven fabric and degradable hot melt adhesive, and the non-woven fabric is PLA non-woven fabric; according to the preparation technology of the degradable environment-friendly packaging bag, a base is included, a device frame is arranged on the base, a vertically-arranged device plate is arranged on the right side of the base, a feeding mechanism is arranged on the device plate, an opening mechanism is arranged below the device frame, and pressing mechanisms are arranged on the left side and the right side of the device frame; and a glue spraying mechanism is arranged between the pressing mechanism located on the right side and the feeding mechanism, and a winding device is arranged on the right side of the base. The packaging bag winding device has the advantages that the environmental protection property of packaging bags is improved, the automation degree is high in the production process, the packaging bags are directly wound, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging bag production, and in particular to a degradable and environment-friendly packaging bag and a preparation process thereof. Background Art

[0002] Packaging bags refer to bags used to package various supplies, which make it easy to transport and store goods during the production and circulation process, and are widely used in daily life and industrial production. Actual figures show that 80% of used plastic bags are eventually transported to garbage dumps like general garbage, and only 7% of plastics are recycled. Because plastic bags have stable chemical properties and can exist stably in the environment for a long time, a large number of plastic bags continue to accumulate in the environment, causing serious harm to the environment, such as white pollution, agricultural white cancer and other problems. The hazards caused by plastic pollution are mainly the following aspects: 1. Because plastics have poor air permeability and are waterproof, after mixing with soil, they will affect the absorption of nutrients and water by crops and affect the normal growth of crops; 2. Animals will swallow plastic bags, affecting their life safety; 3. Soil accumulates in the land, affecting the soil structure and occupying limited land resources.

[0003] With the progress of science, the use of degradable materials has become increasingly widespread. Therefore, applying degradable materials to packaging bags is an important step in environmental protection development. In the existing technology, biodegradable ingredients, such as starch, are often added to plastic raw materials to promote the degradation of packaging bags. This method not only increases the cost of production equipment, but also the degradation effect is not good enough, which is not conducive to the trend of sustainable development.

[0004] In order to solve the above problems, we proposed a degradable and environmentally friendly packaging bag and its preparation process. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the background technology and to propose a degradable and environmentally friendly packaging bag and a preparation process thereof.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a degradable and environmentally friendly packaging bag, which is made of non-woven fabric and degradable hot-melt adhesive, and the non-woven fabric is PLA non-woven fabric.

[0007] A preparation process for a degradable and environmentally friendly packaging bag comprises a base, wherein a device frame is provided on the base, a vertically arranged device plate is provided on the right side of the base, a feeding mechanism is provided on the device plate, an opening mechanism is provided below the device frame, pressing mechanisms are provided on both sides of the device frame, a glue spraying mechanism is provided between the pressing mechanism and the feeding mechanism on the right side, and a winding device is provided on the right side of the base.

[0008] The two wheels are connected with each other through the two guide rails, and the two guide rails are connected with each other through the two guide rails respectively.

[0009] The opening mechanism includes a first telescopic cylinder fixedly mounted on the upper end of the base, the telescopic end of the first telescopic cylinder is fixedly connected to a lower clamping plate, a cutting opening is provided on the lower clamping plate, a second telescopic cylinder is fixedly mounted on the upper end of the device frame, the telescopic end of the second telescopic cylinder is arranged toward and fixedly connected to a connecting plate, an upper clamping plate corresponding to the position of the lower clamping plate is fixedly connected to the lower end of the connecting plate at intervals, a third telescopic cylinder is fixedly mounted on the upper end of the base and below the cutting opening, and a cutting box is fixedly connected to the telescopic end of the third telescopic cylinder.

[0010] In the above-mentioned process for preparing a degradable and environmentally friendly packaging bag, the clamping mechanism includes two second frames fixedly connected to the upper end of the base and distributed front and back, and the two second frames are vertically provided with lifting openings, and each of the lifting openings is slidably connected with two lifting blocks symmetrically distributed up and down, and a second bidirectional threaded rod is rotatably connected between the upper and lower inner walls of each lifting opening, and the second bidirectional threaded rod threads penetrate the corresponding two lifting blocks, and a clamping roller is rotatably connected between every two lifting blocks opposite to each other front and back.

[0011] In the above-mentioned process for preparing a degradable and environmentally friendly packaging bag, the glue spraying mechanism includes two first frames fixedly connected to the upper end of the base and spaced apart in the front and rear, two guide rollers spaced apart in the upper and lower parts are rotatably connected between the two first frames, an electric glue spraying box is fixedly installed between the two first frames and between the two guide rollers, line nozzles are provided at both the upper and lower ends of the electric glue spraying box, and single-hole nozzles are provided at both the upper and lower ends of the electric glue spraying box and in front and behind the line nozzles.

[0012] In the above-mentioned process for preparing a degradable and environmentally friendly packaging bag, a vacuum cleaner is fixedly installed on the base, and the vacuum end of the vacuum cleaner and the lower end of the cutting box are connected to a vacuum pipe.

[0013] In the above-mentioned preparation process of a degradable and environmentally friendly packaging bag, an easy-tear cutting groove is opened at the upper end of the lower splint and at the left side of the cutting opening, and a toothed cutter is embedded at the corresponding position of the easy-tear cutting groove at the lower end of the upper splint. An electric telescopic rod is fixedly installed on the upper end of the upper splint, and the telescopic end of the electric telescopic rod is fixedly connected to the toothed cutter.

[0014] In the above-mentioned process for preparing a degradable and environmentally friendly packaging bag, a compression groove is provided at the upper end of the lower clamping plate and at the right side of the cutting opening, and a compression strip matching the position of the compression groove is fixedly connected to the lower end of the upper clamping plate.

[0015] Compared with the existing technology, the advantages of this degradable environmentally friendly packaging bag and its preparation process are:

[0016] By using non-woven fabrics and degradable hot-melt adhesives to make packaging bags, the packaging bags have a degradable function and are extremely environmentally friendly. The non-woven fabric material not only improves the load-bearing capacity of the packaging bags, but also facilitates the design of the appearance color, improves the appearance of the packaging bags, and promotes product sales.

[0017] By setting up the feeding mechanism, the feeding work of the dinner non-woven fabric can be easily performed, and the center of the packaged non-woven fabric roll can be achieved simply by rotating the corresponding first bidirectional threaded rod, so that the preparation work can be carried out stably.

[0018] By setting up a glue spraying mechanism, a pressing mechanism and an opening mechanism, the two layers of non-woven fabrics can be automatically sprayed with glue, and then the glue spraying position is pressed, and the two layers of non-woven fabrics are effectively bonded together using degradable hot-melt adhesive. Then, the opening mechanism is used to open a rectangular opening on the non-woven fabric, so that the non-woven fabric directly forms a packaging bag shape, and then an easy-tear line is marked and directly wound into a roll. The degree of automation is high, and the rolling work of the packaging bag is directly completed, which greatly improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A structural stereogram of a preparation process of a degradable and environmentally friendly packaging bag proposed by the present invention;

[0020] Figure 2 A three-dimensional diagram of a feeding mechanism in a preparation process of a biodegradable and environmentally friendly packaging bag proposed for the invention;

[0021] Figure 3 A three-dimensional diagram of an opening mechanism in a preparation process of a biodegradable and environmentally friendly packaging bag proposed for the invention;

[0022] Figure 4 A stereoscopic diagram of a glue spraying mechanism in a preparation process of a biodegradable and environmentally friendly packaging bag proposed in the invention.

[0023] In the figure: 1 base, 2 device frame, 3 device plate, 4 rotating rod, 5 winding cylinder, 6 vertical plate, 7 first bidirectional threaded rod, 8 moving block, 9 connecting rod, 10 limiting ring plate, 11 limiting rod, 12 first frame plate, 13 guide roller, 14 electric spray box, 15 line nozzle, 16 single hole nozzle, 17 second frame plate, 18 lifting port, 19 lifting block, 20 second bidirectional threaded rod, 21 clamping roller, 22 first telescopic cylinder, 23 lower clamping plate, 24 cutting port, 25 easy-tear cutting groove, 26 clamping groove, 27 second telescopic cylinder, 28 connecting plate, 29 upper clamping plate, 30 toothed cutter, 31 electric telescopic rod, 32 clamping strip, 33 third telescopic cylinder, 34 cutting box, 35 vacuum cleaner, 36 vacuum tube. DETAILED DESCRIPTION

[0024] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0025] A degradable environmentally friendly packaging bag, the degradable environmentally friendly packaging bag is made of non-woven fabric and degradable hot melt adhesive, the non-woven fabric is PLA non-woven fabric, which is the existing technology, PLA non-woven fabric is a new type of industrial fabric made of bio-based materials, usually also known as: polylactic acid non-woven fabric, degradable non-woven fabric, corn fiber non-woven fabric, its biggest feature is that it is degradable, friendly to the ecological environment, and will not produce chemical toxicity. Degradable hot melt adhesive is the existing technology and will not be explained here.

[0026] Reference Figure 1-Figure 4 A preparation process of a degradable and environmentally friendly packaging bag includes a base 1, a device frame 2 is provided on the base 1, a vertically arranged device plate 3 is provided on the right side of the base 1, a feeding mechanism is provided on the device plate 3, an opening mechanism is provided below the device frame 2, pressing mechanisms are provided on the left and right sides of the device frame 2, a glue spraying mechanism is provided between the pressing mechanism and the feeding mechanism on the right side, a winding device is provided on the right side of the base 1, and the winding device is a prior art, which is not drawn in the figure and will not be explained here.

[0027] The feeding mechanism includes two rotating rods 4 rotatably connected to the front end of the device plate 3 and spaced apart from each other. The rotating rods 4 are provided with limit protrusions. The two rotating rods 4 are both slidably sleeved with winding drums 5. The rotating rods 4 rotate coaxially with the winding drums 5. The winding drums 5 are used to wind the non-woven fabric to be used in advance. A vertical plate 6 is provided in front of the device plate 3. Two first two-way threaded rods 7 are rotatably connected between the vertical plate 6 and the device plate 3. Two limit rods 11 are fixedly connected between the vertical plate 6 and the device plate 3. Two moving blocks 8 symmetrically distributed in the front and rear are threadedly sleeved on the two first two-way threaded rods 7. Each moving block 8 is slidably sleeved on the adjacent limit rods 11. A connecting rod 9 is provided at the left end of each moving block 8. The connecting rod 9 at the rear is fixedly connected to the moving block 8. The connecting rod 9 at the front is rotatably connected to the moving block 8 through a hinge. The end of each connecting rod 9 away from the moving block 8 is fixedly connected to a limit ring plate 10. Each limit ring plate 10 is respectively sleeved on the corresponding rotating rod 4. The limit ring plates 10 are distributed on the front and rear sides of the winding drum 5. The end of the limit ring plate 10 close to the winding drum 5 is provided with a plurality of movable balls. The position of the two limit ring plates 10 can be adjusted by rotating the first two-way threaded rod 7, so that the winding drum 5 is pushed to the center position and its position is limited.

[0028] Specifically, before preparing the biodegradable and environmentally friendly packaging bag, it is necessary to put the two rolls of non-woven fabric wound on the winding drum 5 into the feeding mechanism, first move the two limiting ring plates 10 at the front to a position away from the front end of the rotating rod 4, and then flip the limiting ring plates 10 upward, and then the two rolls of non-woven fabric can be placed on the corresponding rotating rod 4 in turn, and then reset the limiting ring plates 10, rotate the first bidirectional threaded rod 7, and make the corresponding front and rear limiting ring plates 10 move relative to each other, so that the corresponding non-woven fabric rolls can be pushed to the center position.

[0029] The opening mechanism includes a first telescopic cylinder 22 fixedly installed on the upper end of the base 1, the telescopic end of the first telescopic cylinder 22 is fixedly connected to a lower clamping plate 23, and a cutting opening 24 is opened on the lower clamping plate 23; a second telescopic cylinder 27 is fixedly installed on the upper end of the device frame 2, the telescopic end of the second telescopic cylinder 27 is arranged toward and fixedly connected to a connecting plate 28, and an upper clamping plate 29 corresponding to the position of the lower clamping plate 23 is fixedly connected to the lower end of the connecting plate 28 at intervals; a third telescopic cylinder 33 is fixedly installed on the upper end of the base 1 and below the cutting opening 24, and a cutting box 34 is fixedly connected to the telescopic end of the third telescopic cylinder 33; the first telescopic cylinder 22 and the second telescopic cylinder 27 can drive the corresponding lower clamping plate 23 and the upper clamping plate 29 to move relative to each other, so that the two non-woven fabrics can be clamped together to facilitate subsequent cutting work.

[0030] Specifically, during cutting, the third telescopic cylinder 33 can drive the cutting box 34 to move upward, and the two layers of non-woven fabrics are cut through the cutting opening 24. A vacuum cleaner 35 is fixedly mounted on the base 1, and a vacuum end of the vacuum cleaner 35 is connected to the lower end of the cutting box 34 through a vacuum pipe 36. After cutting, the vacuum cleaner 35 can directly suck the cut non-woven fabrics into the waste box of the vacuum cleaner 35.

[0031] The clamping mechanism includes two second frames 17 fixedly connected to the upper end of the base 1 and distributed front and back, and the two second frames 17 are vertically opened with lifting openings 18, and each lifting opening 18 is slidably connected with two lifting blocks 19 symmetrically distributed up and down, and a second two-way threaded rod 20 is rotatably connected between the upper and lower inner walls of the two lifting openings 18 located in the front, and the second two-way threaded rod 20 threads penetrate the corresponding two lifting blocks 19, and a clamping roller 21 is rotatably connected between every two lifting blocks 19 facing each other front and back, and the distance between the two clamping rollers 21 can be adjusted by rotating the second two-way threaded rod 20, so that the two layers of non-woven fabrics are compressed.

[0032] The glue spraying mechanism includes two first frames 12 fixedly connected to the upper end of the base 1 and spaced apart from each other, two guide rollers 13 spaced apart from each other are connected and rotated together between the two first frames 12, an electric glue spraying box 14 is fixedly installed between the two first frames 12 and between the two guide rollers 13, a line spray head 15 is provided at both ends of the electric glue spraying box 14, and single-hole spray heads 16 are provided at both ends of the electric glue spraying box 14 and at the front and rear positions of the line spray head 15, and the two layers of non-woven fabrics can be respectively wound around The non-woven fabric passes through two guide rollers 13, thereby smoothly passing through the pressing mechanism and the opening mechanism on the left. In the glue spraying mechanism, the two line nozzles 15 on the electric glue spraying box 14 can spray linear adhesive toward the opposite sides of the two non-woven fabrics in stages. The adhesive is a degradable hot melt adhesive, and the four single-hole nozzles 16 can continuously spray adhesive on the edge of the non-woven fabric, so that the two layers of non-woven fabrics can be adhered at the front and rear ends when passing through the pressing mechanism, and the longitudinal staged linear adhesive is used as the bottom of the packaging bag to complete the adhesion.

[0033] An easy-tear cutting groove 25 is provided at the upper end of the lower clamping plate 23 and at the left side of the cutting opening 24. A toothed cutter 30 is embedded at the corresponding position of the easy-tear cutting groove 25 at the lower end of the upper clamping plate 29. An electric telescopic rod 31 is fixedly installed at the upper end of the upper clamping plate 29. The telescopic end of the electric telescopic rod 31 is fixedly connected to the toothed cutter 30. After the opening mechanism clamps the cutting box 34 of the non-woven fabric, the electric telescopic rod 31 can drive the toothed cutter 30 to cut the easy-tear line of the double-layer non-woven fabric, which is convenient for the subsequent production of packaging bag rolls to be easy to tear and use. A pressing groove 26 is provided at the upper end of the lower clamping plate 23 and at the right side of the cutting opening 24. A pressing strip 32 matching the position of the pressing groove 26 is fixedly connected at the lower end of the upper clamping plate 29. The setting of the pressing groove 26 and the pressing strip 32 can further press the linear adhesive between the double-layer non-woven fabrics, making the packaging bag more secure.

[0034] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A degradable and environmentally friendly packaging bag, characterized by: The degradable and environment-friendly packaging bag is made of non-woven fabric and degradable hot-melt adhesive.

2. A degradable and environmentally friendly bag according to claim 1, characterized in that: The non-woven fabric is PLA non-woven fabric.

3. A process for preparing a degradable and environmentally friendly packaging bag, comprising a base (1), characterized in that: The base (1) is provided with a device frame (2), the right side of the base (1) is provided with a vertically arranged device plate (3), the device plate (3) is provided with a feeding mechanism, an opening mechanism is provided below the device frame (2), the left and right sides of the device frame (2) are provided with clamping mechanisms, a glue spraying mechanism is provided between the clamping mechanism and the feeding mechanism on the right side, and a winding device is provided on the right side of the base (1). The feeding mechanism comprises two rotating rods (4) which are rotatably connected to the front end of the device plate (3) and are spaced apart from each other in the upper and lower directions. The rotating rods (4) are provided with limiting protrusions. The two rotating rods (4) are both slidably sleeved with winding tubes (5). A vertical plate (6) is provided in front of the device plate (3). Two first bidirectional threaded rods (7) are rotatably connected between the vertical plate (6) and the device plate (3). Two limiting rods (11) are fixedly connected between the vertical plate (6) and the device plate (3). Two first bidirectional threaded rods (7) are both threadedly sleeved with two symmetrically distributed front and rear threaded rods (11). A moving block (8), each of the moving blocks (8) is slidably sleeved on an adjacent limiting rod (11), a connecting rod (9) is provided at the left end of each of the moving blocks (8), the connecting rod (9) located at the rear is fixedly connected to the moving block (8), and the connecting rod (9) located at the front is rotatably connected to the moving block (8) through a hinge, and one end of each of the connecting rods (9) away from the moving block (8) is fixedly connected to a limiting ring plate (10), each of the limiting ring plates (10) is respectively sleeved on a corresponding rotating rod (4), and the limiting ring plates (10) are distributed on the front and rear sides of the winding drum (5); The opening mechanism comprises a first telescopic cylinder (22) fixedly mounted on the upper end of the base (1), the telescopic end of the first telescopic cylinder (22) being fixedly connected to a lower clamping plate (23), the lower clamping plate (23) being provided with a cutting opening (24), a second telescopic cylinder (27) being fixedly mounted on the upper end of the device frame (2), the telescopic end of the second telescopic cylinder (27) being arranged in a direction and fixedly connected to a connecting plate (28), the lower end of the connecting plate (28) being fixedly connected to an upper clamping plate (29) corresponding to the position of the lower clamping plate (23) at intervals, a third telescopic cylinder (33) being fixedly mounted on the upper end of the base (1) and below the cutting opening (24), the telescopic end of the third telescopic cylinder (33) being fixedly connected to a cutting box (34).

4. The process for preparing a degradable and environmentally friendly packaging bag according to claim 3, characterized in that: The clamping mechanism comprises two second frame plates (17) fixedly connected to the upper end of the base (1) and distributed front and back, each of the two second frame plates (17) is vertically provided with a lifting opening (18), each of the lifting openings (18) is slidably connected with two lifting blocks (19) symmetrically distributed up and down, a second bidirectional threaded rod (20) is rotatably connected between the upper and lower inner walls of each lifting opening (18), the second bidirectional threaded rod (20) is threadedly passed through the corresponding two lifting blocks (19), and a clamping roller (21) is rotatably connected between each two lifting blocks (19) facing each other front and back.

5. The process for preparing a degradable and environmentally friendly packaging bag according to claim 3, characterized in that: The glue spraying mechanism comprises two first frames (12) fixedly connected to the upper end of the base (1) and spaced apart from each other in the front and rear, two guide rollers (13) spaced apart from each other in the upper and lower parts are rotatably connected between the two first frames (12), an electric glue spraying box (14) is fixedly installed between the two first frames (12) and between the two guide rollers (13), a line spray head (15) is provided at both the upper and lower ends of the electric glue spraying box (14), and single-hole spray heads (16) are provided at both the upper and lower ends of the electric glue spraying box (14) and in front and behind the line spray head (15).

6. The process for preparing a degradable and environmentally friendly packaging bag according to claim 3, characterized in that: A dust collector (35) is fixedly mounted on the base (1), and a dust suction end of the dust collector (35) and a lower end of the cutting box (34) are connected to a dust suction pipe (36).

7. The process for preparing a degradable and environmentally friendly packaging bag according to claim 3, characterized in that: An easy-tear cutting groove (25) is provided at the upper end of the lower clamping plate (23) and at the left side of the cutting opening (24); a toothed cutter (30) is embedded at the lower end of the upper clamping plate (29) at a position corresponding to the easy-tear cutting groove (25); an electric telescopic rod (31) is fixedly mounted at the upper end of the upper clamping plate (29); and the telescopic end of the electric telescopic rod (31) is fixedly connected to the toothed cutter (30).

8. The process for preparing a degradable and environmentally friendly packaging bag according to claim 3, characterized in that: A clamping groove (26) is provided at the upper end of the lower clamping plate (23) and at the right side of the cutting opening (24), and a clamping strip (32) matching the position of the clamping groove (26) is fixedly connected to the lower end of the upper clamping plate (29).

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