Closed square bottom valve port paper bag and its processing method

Abstract

The application discloses a closed square-bottom valve port paper bag and a processing method thereof. The paper bag body is internally provided with a clamping port, the clamping port is internally provided with a clamping joint, the clamping joint is integrally provided with a sealing layer on the outside, the sealing layer is provided with a tearing line on both sides, the sealing layer is internally provided with a filling port, the inner wall of the filling port is fixedly provided with a filling bag on one side, the filling bag is internally provided with a sealing outer strip on one side, the filling bag is internally provided with a sealing inner strip on one side, and the paper bag body is internally provided with a movable groove. The sealing layer is movably upwardly clamped by the clamping joint, more materials can be accommodated in the paper bag body, the filling bag is arranged in the sealing layer, the materials can be filled into the paper bag body after the sealing outer strip and the sealing inner strip are opened, the paper bag body is sealed, the pulling head and the pulling rope can be torn between the sealing end and the paper bag body, the paper bag body is sealed before and after use, and the sealing effect of the paper bag body is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve paper bags, in particular to a closed square bottom valve paper bag and a processing method thereof. BACKGROUND

[0002] Valve paper bags are popular packaging bags that use special filling equipment to fill materials from the top or bottom valve, and are packed into a square shape after filling. Valve paper bags are mainly used to package edible powder, chemical powder, fertilizer, grain and salt, and other powdery or granular solid materials and flexible materials.

[0003] For example, a square bottom valve paper bag with patent number CN213293282U includes a paper bag, the outer surface of which is tightly adhered to a waterproof layer, and the inner wall of which is tightly adhered to an oil-proof layer. The lower ends of both sides of the paper bag are fixedly adhered to side wing reinforcing pieces.

[0004] After the valve paper bag is filled with materials, the closure of the valve paper bag is mostly exposed or closed by a single layer of paper. After multiple uses, the valve paper bag may be damaged and leak, causing the materials in the paper bag to become damp or deteriorate. Therefore, there is an urgent need to design a closed square bottom valve paper bag and a processing method thereof to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a closed square bottom valve paper bag and a processing method thereof to solve the above problems in the prior art.

[0006] To achieve the above purpose, the present application provides the following technical solutions:

[0007] A closed square bottom valve paper bag includes a paper bag body, the inside of which is provided with a bayonet, the inside of which is provided with a bayonet, the outside of which is integrally formed with a closure layer, the two sides of which are provided with tear lines, the inside of which is provided with a filling inlet, the inner wall of which is fixedly installed on one side of the filling inlet, the inside of which is fixedly installed on one side of the filling inlet, the inside of which is fixedly installed on one side of the filling inlet, the inside of which is provided with a movable groove, the top of which is integrally formed with a cladding paper, the top of which is provided with a closure end, the inside of which is inserted with a pull rope, and one end of the pull rope is integrally formed with a pull head end, and the bottom of the paper bag body is bonded with a square bottom plate.

[0008] Preferably, the bottom of the square bottom plate is bonded with a square bottom pad, and the inside of the paper bag body is provided with an inner filling pad.

[0009] Preferably, the inside of the inner filling pad is provided with an inflation cavity, and one side of the inner filling pad is fixedly connected with a filling hose.

[0010] Preferably, the outer wall of one end of the filling hose is threaded with a cap, and the inside of the paper bag body is fixedly provided with a paper cushion layer.

[0011] Preferably, the inner wall of the paper cushion layer is bonded with a paper core layer, and the inner wall of the paper core layer is bonded with a kraft paper layer.

[0012] Preferably, the inside of the kraft paper layer is coated with an anti-immersion layer, and the inner strip of the sealing glue is arranged inside the outer strip of the sealing glue.

[0013] Preferably, the outer wall of one side of the paper bag body is bonded with a marker paper, and the paper bag body is fixedly inserted with a pulling rope on both sides.

[0014] A processing method of a closed square bottom valve port paper bag, comprising the closed square bottom valve port paper bag, comprising the following steps:

[0015] S1. Dilution of ingredients: prepare plant fibers, resin materials, sulfate conifer pulp, glycerol, silicon emulsion, polypropylene materials and water raw materials, mix the plant fibers, resin materials, glycerol and water raw materials, dilute to obtain dilution material one, and then pulp the ingredients of sulfate conifer pulp, glycerol, silicon emulsion and water raw materials to obtain dilution material two;

[0016] S2. Pulp dewatering: put the dilution material one and the dilution material two into a press respectively to process and make the water in the dilution material one and the dilution material two dewater;

[0017] S3. Drying and cutting: after dewatering, use a drying device to dry the pulp into a dry state to obtain dry paper material one and dry paper material two, and cut the dry paper material through a cutting device;

[0018] S4. Bag making: the dry paper material one can be made into a paper core layer, a paper cushion layer, a square bottom plate, a sealing layer and a square bottom cushion, the dry paper material two is made into a kraft paper layer, a polypropylene material is coated as an anti-immersion layer, and the paper layers are laminated;

[0019] S5. Accessory making: connect the filling bag after opening the sealing layer, press the tear line on both sides of the sealing layer through a pressing device, connect the pulling rope on the outer edge of the paper bag body, separately make the inner filling cushion, and install the filling hose on one side of the inner filling cushion;

[0020] S6. Installing buckle: groove the paper bag body and install the sealing layer, connect the filling hose with the inner filling cushion after inserting the filling hose into the paper bag body;

[0021] S7. Bag installation: bond the marker paper on the outer wall of the paper bag body, and fixedly insert the pulling rope on the paper bag body, and the processing is completed.

[0022] Preferably, in S1, the rotation speed of the pulp is 150 revolutions per minute, and in S2, the pressure value of the dewatering is 0.8 megapascals.

[0023] Preferably, in the S3, the temperature of the drying state is 60 degrees Celsius, and in the S5, the pressure value of the pressing device is 0.3 MPa.

[0024] In the above technical solution, the paper bag with a closed square bottom valve port and the processing method thereof provided by the application can realize the following effects: the closing layer is moved upward by the clamping joint, the closing layer and the inside of the paper bag body can accommodate more materials, the closing layer is provided with the pouring bag, the materials can be poured into the paper bag body after the outer sealing strip and the inner sealing strip are opened, the paper bag body is closed, the pull head end and the pull rope can be pulled between the sealing end and the paper bag body, the paper bag body is closed before and after use, and the closing effect of the paper bag body is further improved; the inner filling pad and the lower part of the paper bag body are buffered after the cap on the filling hose is opened, and the damage of the materials is reduced; the square bottom plate and the waterproof layer and the kraft paper layer are arranged in the paper bag body, the structure strength of the paper bag body is improved, the entry of oil stains and the like is prevented, and the closing property of the paper bag body is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0026] Figure 1 The three-dimensional structure schematic diagram provided by the embodiment of the paper bag with a closed square bottom valve port and the processing method thereof.

[0027] Figure 2 The paper bag body side view cross-sectional schematic diagram provided by the embodiment of the paper bag with a closed square bottom valve port and the processing method thereof.

[0028] Figure 3 The closing layer structure schematic diagram provided by the embodiment of the paper bag with a closed square bottom valve port and the processing method thereof.

[0029] Figure 4 The sealing outer strip structure schematic diagram provided by the embodiment of the paper bag with a closed square bottom valve port and the processing method thereof.

[0030] Figure 5 The paper bag body local cross-sectional schematic diagram provided by the embodiment of the paper bag with a closed square bottom valve port and the processing method thereof.

[0031] Figure 6The schematic view of the internal filling pad profile is provided for the embodiment of the closed square bottom valve port paper bag and the processing method thereof.

[0032] Figure 7 The schematic view of the pull rope and the overwrap paper top view profile is provided for the embodiment of the closed square bottom valve port paper bag and the processing method thereof.

[0033] Explanation of reference signs:

[0034] 1 paper bag body, 2 square bottom plate, 3 square bottom pad, 4 sealing end, 5 overwrap paper, 6 pull head end, 7 pull rope, 8 card port, 9 card joint, 10 sealing layer, 11 movable slot, 12 filling inlet, 13 filling bag, 14 outer sealing strip, 15 inner sealing strip, 16 internal filling pad, 17 filling hose, 18 immersion prevention layer, 19 kraft paper layer, 20 paper core layer, 21 paper pad layer, 22 marking paper, 23 pull rope, 24 cap, 25 air cavity, 26 tear line. DETAILED DESCRIPTION

[0035] In order to make the technical personnel in the art better understand the technical solutions of the present application, the present application will be further described in detail below in conjunction with the drawings.

[0036] As Figures 1-7 shown, the embodiment of the present application provides a closed square bottom valve port paper bag, which comprises a paper bag body 1, the inside of the paper bag body 1 is provided with a card port 8, the inside of the card port 8 is provided with a card joint 9, the outside of the card joint 9 is integrally formed with a sealing layer 10, both sides of the sealing layer 10 are provided with a tear line 26, the inside of the sealing layer 10 is provided with a filling inlet 12, one side of the inner wall of the filling inlet 12 is fixedly installed with a filling bag 13, one side of the inside of the filling bag 13 is fixedly installed with an outer sealing strip 14, one side of the inside of the filling bag 13 is fixedly installed with an inner sealing strip 15, the inside of the paper bag body 1 is provided with a movable slot 11, the top of the paper bag body 1 is integrally formed with an overwrap paper 5, the top of the overwrap paper 5 is provided with a sealing end 4, the inside of the overwrap paper 5 is inserted with a pull rope 7, one end of the pull rope 7 is integrally formed with a pull head end 6, and the bottom of the paper bag body 1 is bonded with a square bottom plate 2.

[0037] Specifically, in the embodiment, the paper bag body 1 is provided, the inside of the paper bag body 1 is provided with a bayonet 8, the inside of the bayonet 8 is provided with a clamping joint 9, the outside of the clamping joint 9 is integrally formed with a sealing layer 10, the sealing layer 10 is movable through the clamping joint 9, the clamping joint 9 is moved upward in the inside of the bayonet 8, a part of the sealing layer 10 is pulled up, the space in the inside of the paper bag body 1 is increased, the two sides of the sealing layer 10 are provided with tear lines 26, after the tear lines 26 are torn, the inlet of the sealing layer 10 is exposed, the inside of the sealing layer 10 is provided with a pouring inlet 12, the inner wall of the pouring inlet 12 is fixedly provided with a pouring bag 13, materials can be put into the pouring bag 13, the materials enter the inside of the paper bag body 1 through the pouring inlet 12, the inside of the pouring bag 13 is fixedly provided with a sealing outer strip 14 and a sealing inner strip 15, after the sealing outer strip 14 and the sealing inner strip 15 are pulled apart, the materials can enter, or the sealing outer strip 14 and the sealing inner strip 15 are closed to seal the materials, the inside of the paper bag body 1 is provided with a movable groove 11, the sealing layer 10 is movable in the movable groove 11, the top of the paper bag body 1 is integrally formed with a covering paper 5, the top of the covering paper 5 is provided with a sealing end 4, the inside of the covering paper 5 is provided with a pull rope 7, one end of the pull rope 7 is integrally formed with a pull head end 6, after the pull head end 6 is pulled, the pull rope 7 tears the covering paper 5, the pull rope 7 can seal the paper bag body 1 after the materials are put in, the bottom of the paper bag body 1 is bonded with a square bottom plate 2, the square bottom plate 2 can support the paper bag body 1.

[0038] The sealing square bottom valve mouth paper bag provided by the application has the advantages that the sealing layer 10 is movable upward through the clamping joint 9, more materials can be put into the inside of the paper bag body 1 and the sealing layer 10, the pouring bag 13 is arranged in the sealing layer 10, the materials can enter the paper bag body 1 after the sealing outer strip 14 and the sealing inner strip 15 are opened, the paper bag body 1 is closed, the pull head end 6 and the pull rope 7 can tear between the sealing end 4 and the paper bag body 1, the paper bag body 1 is closed before and after use, and the closing effect of the paper bag body 1 is further improved.

[0039] In another embodiment provided by the application, as shown in Figure 1 and Figure 5 , the bottom of the square bottom plate 2 is bonded with a square bottom pad 3, the square bottom plate 2 and the square bottom pad 3 support the paper bag body 1, and the inside of the paper bag body 1 is provided with an inner filling pad 16.

[0040] In another embodiment provided by the application, as shown in Figure 1 , Figure 5 and Figure 6 , the inside of the inner filling pad 16 is provided with an air filling cavity 25, one side of the inner filling pad 16 is fixedly connected with a filling hose 17, the inside of the filling hose 17 can be filled with gas, and the gas can enter the inside of the air filling cavity 25, so that the inner filling pad 16 is inflated to serve as a buffer.

[0041] In another embodiment of the present application, as shown in Figure 1 、 Figure 5 and Figure 6 , a cap 24 is screwed onto the outer wall of one end of the filling hose 17, and when the cap 24 is rotated to open, gas can pass from the filling hose 17 to the inside of the air chamber 25, and the paper pad layer 21 is fixedly installed inside the paper bag body 1.

[0042] In another embodiment of the present application, as shown in Figure 1 、 Figure 5 and Figure 6 , the inner wall of the paper pad layer 21 is bonded with a paper core layer 20, and the inner wall of the paper core layer 20 is bonded with a kraft paper layer 19, and the paper pad layer 21 and the paper core layer 20 can be used as the base of the paper bag body 1 to support.

[0043] In another embodiment of the present application, as shown in Figure 1 、 Figure 5 and Figure 6 , the inside of the kraft paper layer 19 is coated with a waterproof layer 18, which can prevent the entry of external oil stains, and the sealing inner strip 15 is clamped inside the sealing outer strip 14, and the sealing inner strip 15 and the sealing outer strip 14 are attached to seal the pouring bag 13.

[0044] In another embodiment of the present application, as shown in Figure 1 , a mark paper 22 is bonded to the outer wall of one side of the paper bag body 1, and the mark paper 22 can mark the type of the paper bag body 1, and a pull rope 23 is fixedly inserted into both sides of the paper bag body 1, which facilitates the taking of the paper bag body 1.

[0045] A processing method of a closed square bottom valve port paper bag, comprising a closed square bottom valve port paper bag, comprising the following steps:

[0046] S1. Dilution of ingredients: prepare plant fibers, resin materials, sulfate conifer pulp, glycerol, silicon emulsion, polypropylene materials and water raw materials, mix the plant fibers, resin materials, glycerol and water raw materials, and dilute to obtain dilution material one, and then pulp the sulfate conifer pulp, glycerol, silicon emulsion and water raw materials to obtain dilution material two;

[0047] S2. Pulp dewatering: put the dilution material one and the dilution material two into a press machine respectively to process, so that the water in the dilution material one and the dilution material two is removed;

[0048] S3. Drying and cutting: after dewatering, use a drying device to dry the pulp to a dry state to obtain dry paper material one and dry paper material two, and cut the dry paper material through a cutting device;

[0049] S4. Bag making: dry paper material one can be made into paper core layer 20, paper pad layer 21, square bottom plate 2, sealing layer 10 and square bottom pad 3, dry paper material two is made into kraft paper layer 19, polypropylene material is coated as anti-immersion layer 18, and paper material layers are laminated;

[0050] S5. Accessory making: after opening in sealing layer 10, connect pouring bag 13, and tear open line 26 is pressed out on both sides of sealing layer 10 by pressing equipment, fixed pull rope 7 is connected on the outer edge of paper bag body 1, inner filling pad 16 is made separately, and pouring hose 17 is inserted on one side of inner filling pad 16;

[0051] S6. Installing buckle: slot is opened in paper bag body 1 and sealing layer 10 is buckled and installed, pouring hose 17 is inserted into paper bag body 1 and connected with inner filling pad 16;

[0052] S7. Outside installation of bag: mark paper 22 is adhered on the outside of paper bag body 1, and pull rope 23 is fixed and inserted on paper bag body 1, and the processing is completed.

[0053] Preferably, in S1, the rotation speed of the pulping is 150 rpm, and in S2, the pressure value of the squeezing dehydration is 0.8 MPa.

[0054] Preferably, in S3, the temperature for drying to dry state is 60 degrees Celsius, and in S5, the pressure value used by the pressing equipment is 0.3 MPa.

[0055] Working principle: the operator pulls the pull head end 6, so that the pull head end 6 pulls the pull rope 7 to move, the pull rope 7 can pull the covering paper 5, the covering paper 5 is torn and broken, the paper bag body 1 and the sealing end 4 can be separated, the operator pulls the pouring bag 13, so that the pouring bag 13 is pulled out of the inside of the paper bag body 1, the person opens the sealing inner strip 15 and the sealing outer strip 14, so that the sealing inner strip 15 and the sealing outer strip 14 are separated, the material is poured from the pouring port 12 in the pouring bag 13 to the inside of the paper bag body 1, the person pulls the sealing layer 10, so that the clamping head 9 under the sealing layer 10 moves in the inside of the clamping port 8, the sealing layer 10 can be pulled up, the sealing layer 10 moves in the inside of the moving groove 11, so that the storage space in the inside of the sealing layer 10 and the paper bag body 1 is increased, and after the sealing inner strip 15 and the sealing outer strip 14 are adhered, the space in the inside of the sealing layer 10 and the paper bag body 1 is sealed, the person can also tear the tear open line 26, and the material is directly put into the inside of the paper bag body 1, the pull rope 7 can be wound on the top of the paper bag body 1, the paper bag body 1 is sealed, the cap 24 is rotated to open, the gas is introduced from the pouring hose 17 to the inflation cavity 25 of the inner filling pad 16, so that the inflation cavity 25 of the inner filling pad 16 is filled, the inner filling pad 16 can buffer the lower part of the paper bag body 1, the paper pad layer 21 and the paper core layer 20 are sequentially installed on the inner wall of the paper bag body 1 as the base body, the kraft paper layer 19 can increase the sealing tightness, the anti-immersion layer 18 prevents the entry of oil stains and other liquids, and the square bottom plate 2 and the square bottom pad 3 support the bottom of the paper bag body 1.

[0056] Certain exemplary embodiments of the present application have been described above by way of illustration, and it is to be understood that certain modifications can be made without departing from the spirit and scope of the application as set forth in the claims. Accordingly, the above description and drawings are to be construed in an illustrative, and not a restrictive, sense.

Claims

1. A closed square-bottom valve paper bag, comprising a paper bag body (1), characterized in that, The paper bag body (1) has an opening (8) inside, and a snap connector (9) is snapped inside the opening (8). A sealing layer (10) is integrally formed on the outside of the snap connector (9). Tear lines (26) are provided on both sides of the sealing layer (10). A filling inlet (12) is opened inside the sealing layer (10). A filling bag (13) is fixedly installed on one side of the inner wall of the filling inlet (12). A sealing outer strip (14) is fixedly installed on one side of the inner wall of the filling bag (13). A sealing inner strip (15) is fixedly installed on one side of the inner wall of the filling bag (13). A movable groove (11) is opened inside the paper bag body (1). A covering paper (5) is integrally formed on the top of the paper bag body (1). A sealing end (4) is provided on the top of the covering paper (5). A pull rope (7) is inserted inside the covering paper (5), and a pull head end (6) is integrally formed on one end of the pull rope (7). A square bottom plate (2) is glued to the bottom of the paper bag body (1).

2. A closed square-bottom valve paper bag according to claim 1, characterized in that, The bottom of the square bottom plate (2) is glued with a square bottom pad (3), and the inside of the paper bag body (1) is provided with an inner pad (16).

3. A closed square-bottom valve paper bag according to claim 2, characterized in that, An inflation chamber (25) is provided inside the inner pad (16), and an inflation hose (17) is fixedly inserted into one side of the inner pad (16).

4. A closed square-bottom valve paper bag according to claim 3, characterized in that, A cap (24) is threaded onto the outer wall of one end of the filling hose (17), and a paper pad layer (21) is fixedly installed inside the paper bag body (1).

5. A closed square-bottom valve paper bag according to claim 4, characterized in that, The inner wall of the paper pad layer (21) is bonded with a paper core layer (20), and the inner wall of the paper core layer (20) is bonded with a kraft paper layer (19).

6. A closed square-bottom valve paper bag according to claim 5, characterized in that, The inside of the kraft paper layer (19) is coated with an anti-impregnation layer (18), and the inner sealing strip (15) is fitted inside the outer sealing strip (14).

7. A closed square-bottom valve paper bag according to claim 6, characterized in that, A label paper (22) is glued to one side of the outer wall of the paper bag body (1), and a lifting rope (23) is fixedly inserted on both sides of the paper bag body (1).

8. A method for processing a closed square-bottom valve paper bag as described in claim 7, characterized in that, Includes the following steps: S1. Ingredient dilution: Prepare plant fiber, resin, sulfate softwood pulp, glycerin, silicone latex, polypropylene and water. Mix the plant fiber, resin, glycerin and water and dilute to obtain dilution material one. Then mix the sulfate softwood pulp, glycerin, silicone latex and water and beat them to obtain dilution material two. S2. Pulping and Dewatering: Diluent 1 and Diluent 2 pulps are placed into a press for processing to remove water from them. S3. Drying and Cutting: After dehydration, the pulp is dried to a dry state using a drying device to obtain dry paper stock one and dry paper stock two. The dry paper stock is then cut using a cutting device. S4. Bag making: Dry paper material one can be made into a paper core layer (20), a paper pad layer (21), a square bottom plate (2), a sealing layer (10) and a square bottom pad (3), dry paper material two can be made into a kraft paper layer (19), and polypropylene material is coated as an anti-impregnation layer (18), and the paper materials are laminated layer by layer; S5. Accessory making: After the opening in the sealing layer (10), connect the filling bag (13), and press out the tear line (26) on both sides of the sealing layer (10) using a pressing device. Connect the fixed pull rope (7) to the outer edge of the paper bag body (1), make the inner filling pad (16) separately, and install the insertion filling hose (17) on one side of the inner filling pad (16). S6. Install buckles: Cut a groove in the paper bag body (1) and snap the sealing layer (10) into place. Insert the filling hose (17) into the paper bag body (1) and connect it to the inner filling pad (16). S7. External installation: The label paper (22) is glued to the outside of the paper bag body (1), and the lifting rope (23) is fixedly inserted into the paper bag body (1). The processing is completed.

9. A method for processing a closed square-bottom valve paper bag according to claim 8, characterized in that, In step S1, the rotation speed of the mixing and pulping process is 150 rpm, and in step S2, the pressure value of the pressing and dehydration process is 0.8 MPa.

10. A method for processing a closed square-bottom valve paper bag according to claim 8, characterized in that, In step S3, the drying temperature is 60 degrees Celsius, and in step S5, the pressure used by the pressing equipment is 0.3 MPa.

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