Antibacterial wrapping film with high tensile strength

Abstract

The utility model relates to a kind of antibacterial wrapping film with high tensile strength, it relates to wrapping film technical field, it includes film roll body, sleeve rod is inserted in the film roll body, several expansion round pegs are set through on the sleeve rod, the expansion round peg one end is in abutment with the film roll body, the expansion round peg other end is in abutment with inner rod jointly, the inner rod is slidably connected with sleeve rod, the sleeve rod one end is set through connecting rod, the connecting rod one end is rotatably connected with inner rod, the connecting rod other end is set with inserting piece, the sleeve rod towards inserting piece one end is set with several first insertion hole, the first insertion hole is for inserting piece to insert, the sleeve rod towards inserting piece one end is fixedly set with inserting block, several second insertion hole is set on the inserting block, the second insertion hole is for inserting piece to insert, spring is set on the connecting rod, the spring is in abutment between sleeve rod and inner rod. The present application has the effect of reducing the relative movement of the expansion inner rod and sleeve rod accidentally occurs.

Description

Technical Field

[0001] This utility model relates to the field of stretch film technology, and in particular to an antibacterial stretch film with high tensile strength. Background Technology

[0002] Stretch film is a type of plastic film material used for packaging and protecting goods. It features good tensile properties, high transparency, uniform thickness, high longitudinal elongation, high yield point, high transverse tear strength, and good puncture resistance. It is widely used in logistics, warehousing, manufacturing, food, medicine, construction, agriculture, and many other fields.

[0003] A related technology, Chinese patent CN214522530U, provides an antibacterial and environmentally friendly composite membrane, which includes a paper tube. A composite membrane roll is wound around the outer wall of the paper tube. The composite membrane roll includes a pressure-resistant membrane, a nylon membrane, and a silver ion membrane. Nylon membranes are fixedly adhered to the outer surfaces of both ends of the pressure-resistant membrane. Silver ion membranes are fixedly adhered to the outer surfaces of both ends of the nylon membrane. A sleeve rod is movably connected to the inner wall of the paper tube. A handle is movably connected to one end of the sleeve rod. An expansion groove is formed on the outer wall of the sleeve rod. An expansion nail is set inside the expansion groove. An expansion inner rod is set inside the sleeve rod. An inclined groove is formed on the outer wall of the expansion inner rod. An expansion nail is movably connected inside the inclined groove. A pull rod is fixedly connected to the outer surface of one end of the expansion inner rod. When the paper tube is fitted onto the outer wall of the sleeve rod, pull the pulling rod outward so that the expansion pin abuts against the inside of the paper tube, providing a certain degree of support and fixation for the paper tube. When taking the composite film roll, hold the handle with one hand and pull one end of the composite film roll with the other hand. At this time, the paper tube rotates between the sleeve rod and the handle, making it easy to take the composite film roll.

[0004] In the process of developing this application, the inventors discovered that the technology has at least the following problems: the expansion inner rod and the sleeve rod maintain relative stillness mainly by the friction between the expansion inner rod and the sleeve rod, which makes the expansion inner rod and the sleeve rod prone to relative movement under the influence of external forces, thus making it easy for the expansion round nail to retract into the inclined groove, lose its supporting and fixing function for the paper tube, and cause the paper tube to shake or fall off the sleeve rod. Utility Model Content

[0005] To reduce the possibility of accidental relative movement between the expansion inner rod and the sleeve rod, this application provides an antibacterial wrapping film with high tensile strength.

[0006] The antibacterial wrapping film with high tensile strength provided in this application adopts the following technical solution: A high tensile strength antibacterial wrapping film includes a film roll body, a sleeve rod inserted inside the film roll body, a plurality of expansion pins passing through the sleeve rod, one end of each expansion pin abutting against the film roll body, and the other end of each expansion pin abutting against an inner rod, the inner rod and the sleeve rod being slidably connected, a connecting rod passing through one end of the sleeve rod, one end of the connecting rod being rotatably connected to the inner rod, and a connector being provided at the other end of the connecting rod, a plurality of first insertion holes being provided on the sleeve rod facing the connector for insertion, a connector block being fixedly provided on the sleeve rod facing the connector, a plurality of second insertion holes being provided on the connector for insertion, and a spring being sleeved on the connecting rod, the spring abutting between the sleeve rod and the inner rod.

[0007] By adopting the above technical solution, when the membrane roll body is fitted onto the sleeve rod, the connector is inserted into the first insertion hole. Under the action of the spring, the connector is not easy to slip out of the first insertion hole. At this time, the expansion pin is retracted into the sleeve rod, which makes it easy for the membrane roll body to be fitted onto the sleeve rod. After the membrane roll body is fitted onto the sleeve rod, the connecting rod is pulled outward. The connecting rod drives the inner rod to move so that the expansion pin abuts against the inside of the membrane roll body, which plays a certain supporting and fixing role for the membrane roll body. Then, the connecting rod is rotated so that the connector faces into the second insertion hole. Under the action of the spring, the connector is inserted into the second insertion hole, so that the inner rod and the sleeve rod remain relatively stationary through the connector. At the same time, under the action of the spring, the connector is not easy to slip out of the second insertion hole, so that the inner rod and the sleeve rod are not easy to move relative to each other under the influence of external force, reducing the possibility of the membrane roll body shaking or falling off the sleeve rod.

[0008] Preferably, the connector includes a radial rod and an axial rod. The radial rod is arranged along the radial direction of the film roll body, and the axial rod is arranged along the axial direction of the film roll body. The end of the connecting rod away from the inner rod is fixedly connected to the radial rod, and the end of the radial rod away from the connecting rod is fixedly connected to the axial rod. The first insertion hole is for inserting the axial rod, and the second insertion hole is for inserting the axial rod.

[0009] By adopting the above technical solution, when the axial rod is inserted into the first insertion hole, the radial rod abuts against the end wall of the sleeve rod under the action of the spring. When the axial rod is inserted into the second insertion hole, the radial rod abuts against the end wall of the insertion block under the action of the spring, so that the inner rod and the sleeve rod are not easy to move relative to each other under the influence of external force.

[0010] Preferably, the sleeve rod has an inner cavity, and the inner rod, the end of the connecting rod away from the plug and the spring are all located in the inner cavity. Several snap-fit ​​grooves are formed in the inner cavity, and snap-fit ​​blocks are slidably arranged in the snap-fit ​​grooves. The snap-fit ​​blocks are fixedly connected to the inner rod.

[0011] By adopting the above technical solution, when the inner rod and the sleeve rod slide relative to each other, the inner rod drives the locking block to move along the locking groove. Under the action of the locking block, the sleeve rod and the inner rod are not easy to rotate relative to each other, thus achieving the effect of sliding connection between the inner rod and the sleeve rod.

[0012] Preferably, a plurality of telescopic holes are formed through the sleeve rod, the telescopic holes are interconnected with the inner cavity, the expansion pin is slidably disposed in the telescopic holes, the diameter of the telescopic hole near the inner rod is larger than the diameter of the telescopic hole away from the inner rod, the diameter of the telescopic hole away from the inner rod is larger than the diameter of the expansion pin away from the inner rod, and the diameter of the telescopic hole away from the inner rod is smaller than the diameter of the expansion pin near the inner rod.

[0013] By adopting the above technical solution, since the diameter of the end of the telescopic hole furthest from the inner rod is smaller than the diameter of the end of the expansion pin closest to the inner rod, the expansion pin is less likely to slip off the sleeve rod under the restriction of the telescopic hole.

[0014] Preferably, the outer wall of the inner rod is provided with several inclined grooves, the end of the expansion nail away from the film roll body abuts against the inner wall of the inclined groove, the end of the inclined groove near the axis of the inner rod is close to the connecting rod, and the end of the inclined groove away from the axis of the inner rod is away from the connecting rod.

[0015] By adopting the above technical solution, when the inner rod and sleeve rod gradually compress the spring, the inclined groove pushes the expansion round nail to gradually protrude from the sleeve rod.

[0016] Preferably, a handle is rotatably mounted on the end of the sleeve rod away from the connecting rod.

[0017] By adopting the above technical solution, when taking the membrane roll body, one hand holds the handle and the other hand pulls one end of the membrane roll body. At this time, the membrane roll body rotates between the sleeve and the handle, which makes it easy to take the membrane roll body.

[0018] Preferably, the film roll body includes a paper tube and a composite film, the sleeve is inserted into the paper tube, the end of the expansion pin away from the inner rod abuts against the paper tube, and the composite film is wound around the paper tube.

[0019] Preferably, the composite membrane includes a first silver ion membrane, a first nylon membrane, a pressure-resistant membrane, a second nylon membrane, and a second silver ion membrane. One side of the pressure-resistant membrane is connected to the first nylon membrane, and the other side of the pressure-resistant membrane is connected to the second nylon membrane. The side of the first nylon membrane away from the pressure-resistant membrane is connected to the first silver ion membrane, and the side of the second nylon membrane away from the pressure-resistant membrane is connected to the second silver ion membrane.

[0020] By adopting the above technical solution, the composite membrane is composed of a first silver ion membrane, a first nylon membrane, a pressure-resistant membrane, a second nylon membrane, and a second silver ion membrane pressed together, which makes the membrane roll body have high tensile strength and bactericidal and antibacterial effects.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a membrane roll body, sleeve rod, expansion pin, inner rod, connecting rod, connector, first insertion hole, connector block, second insertion hole and spring, the inner rod and sleeve rod are kept relatively stationary through the connector. At the same time, the connector is not easy to slip out of the first and second insertion holes under the action of the spring, so that the inner rod and sleeve rod are not easy to move relative to each other under the influence of external force, reducing the situation of membrane roll body shaking or sleeve rod falling off. 2. By setting radial and axial rods, when the axial rod is inserted into the first insertion hole, the radial rod abuts against the end wall of the sleeve rod under the action of the spring. When the axial rod is inserted into the second insertion hole, the radial rod abuts against the end wall of the insertion block under the action of the spring, so that the inner rod and the sleeve rod are not easy to move relative to each other under the influence of external force. 3. By setting the inner cavity, locking groove and locking block, the inner rod and the sleeve rod can move relative to each other, making it difficult for the sleeve rod and the inner rod to rotate relative to each other. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of an antibacterial wrapping film with high tensile strength according to an embodiment of this application.

[0023] Figure 2 This is a cross-sectional view illustrating the positional relationship between the radial and axial rods in an embodiment of this application.

[0024] Figure 3 This is a cross-sectional view illustrating the positional relationship between the sleeve rod and the inner rod in the embodiments of this application.

[0025] Figure 4 This is a cross-sectional view illustrating the connection relationship between the sleeve rod and the inner rod in the embodiments of this application.

[0026] Figure 5 This is a cross-sectional view illustrating the composite membrane in the embodiments of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Membrane roll body; 11. Paper tube; 12. Composite membrane; 121. First silver ion membrane; 122. First nylon membrane; 123. Pressure-resistant membrane; 124. Second nylon membrane; 125. Second silver ion membrane; 2. Sleeve rod; 21. Inner cavity; 22. Handle; 3. Inner rod; 31. Snap-fit ​​block; 32. Snap-fit ​​groove; 4. Connecting rod; 41. Spring; 5. Insertion piece; 51. Radial rod; 52. Axial rod; 6. First insertion hole; 7. Second insertion hole; 71. Insertion block; 8. Expansion pin; 81. Telescopic hole; 82. Inclined groove. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0029] This application discloses an antibacterial wrapping film with high tensile strength. (Refer to...) Figures 1 to 5The system includes a membrane roll body 1, which comprises a paper tube 11 and a composite membrane 12, with the composite membrane 12 wound around the paper tube 11. The composite membrane 12 includes a first silver ion membrane 121, a first nylon membrane 122, a pressure-resistant membrane 123, a second nylon membrane 124, and a second silver ion membrane 125. One side of the pressure-resistant membrane 123 is pressed against the first nylon membrane 122, and the other side of the pressure-resistant membrane 123 is pressed against the second nylon membrane 124. The side of the first nylon membrane 122 away from the pressure-resistant membrane 123 is pressed against the first silver ion membrane 121, and the side of the second nylon membrane 124 away from the pressure-resistant membrane 123 is pressed against the second silver ion membrane 125, thereby giving the membrane roll body 1 high tensile strength and antibacterial properties.

[0030] refer to Figures 1 to 5 A sleeve rod 2 is inserted inside the paper tube 11. A handle 22 is rotatably mounted on one end of the sleeve rod 2, and a connecting rod 4 passes through the other end of the sleeve rod 2. An inner cavity 21 is formed inside the sleeve rod 2, and an inner rod 3 is slidably arranged inside the inner cavity 21, which is connected to the connecting rod 4. Several telescopic holes 81 are formed through the sleeve rod 2, and the telescopic holes 81 are interconnected with the inner cavity 21. Several inclined grooves 82 are formed on the outer wall of the inner rod 3, and expansion pins 8 are inserted into the telescopic holes 81 and the inclined grooves 82. The end of the inclined groove 82 closer to the axis of the inner rod 3 is close to the connecting rod 4, and the end of the inclined groove 82 away from the axis of the inner rod 3 is away from the connecting rod 4. After the paper tube 11 is put on the sleeve rod 2, the connecting rod 4 is pulled outward. The connecting rod 4 drives the inner rod 3 to move, so that the expansion pins 8 abut against the inside of the paper tube 11, which provides a certain degree of support and fixation for the film roll body 1. When taking the composite film 12, hold the handle with one hand and pull one end of the composite film 12 with the other hand. At this time, the composite film 12 rotates between the sleeve rod 2 and the handle, making it easy to take the composite film 12.

[0031] refer to Figures 1 to 5A spring 41 is fitted onto the connecting rod 4, located within the inner cavity 21, and abuts against the inner wall of the inner cavity 21 and the end wall of the inner rod 3. One end of the connecting rod 4 within the inner cavity 21 is rotatably connected to the inner rod 3, while the other end of the connecting rod 4 outside the inner cavity 21 is fitted with a connector 5. Several first insertion holes 6 are formed at the end of the sleeve rod 2 facing the connector 5, for inserting the connector 5. A connector block 71 is installed at the end of the sleeve rod 2 facing the connector 5, and several second insertion holes 7 are formed on the connector block 71, for inserting the connector 5. When the paper tube 11 is fitted onto the sleeve rod 2, the connector 5 is first inserted into the first insertion hole 6, and the connector 5 is less likely to slip out of the first insertion hole 6 under the action of the spring 41. At this time, the expansion pin 8 retracts into the telescopic hole 81, making it easier for the paper tube 11 to be fitted onto the sleeve rod 2. After the paper tube 11 is fitted onto the sleeve rod 2, pulling the connecting rod 4 outward compresses the spring 41. The connecting rod 4 moves the inner rod 3, causing the expansion pin 8 to abut against the inside of the paper tube 11, providing some support and fixation for the film roll body 1. Then, the connecting rod 4 is rotated so that the insert 5 faces the second insertion hole 7. Subsequently, under the action of the spring 41, the insert 5 is inserted into the second insertion hole 7, keeping the inner rod 3 and the sleeve rod 2 relatively stationary through the insert 5. At the same time, the insert 5 is less likely to slip out of the second insertion hole 7 under the action of the spring 41, making it less likely for the inner rod 3 and the sleeve rod 2 to move relative to each other under the influence of external forces, reducing the possibility of the film roll body 1 shaking or falling off the sleeve rod 2.

[0032] Reference Figures 1 to 5 The connector 5 includes a radial rod 51 and an axial rod 52. The radial rod 51 is arranged radially along the membrane roll body 1, and the axial rod 52 is arranged axially along the membrane roll body 1. The end of the connecting rod 4 away from the inner rod 3 is welded to the radial rod 51, and the end of the radial rod 51 away from the connecting rod 4 is welded to the axial rod 52. The first insertion hole 6 and the second insertion hole 7 are for inserting the axial rod 52. When the axial rod 52 is inserted into the first insertion hole 6, the radial rod 51 abuts against the end wall of the sleeve rod 2 under the action of the spring 41, making it difficult for the inner rod 3 and the sleeve rod 2 to move relative to each other under the influence of external forces. When the axial rod 52 is inserted into the second insertion hole 7, the radial rod 51 abuts against the end wall of the connector block 71 under the action of the spring 41, making it difficult for the inner rod 3 and the sleeve rod 2 to move relative to each other under the influence of external forces.

[0033] Reference Figures 1 to 5 Several snap-fit ​​grooves 32 are formed in the inner cavity 21, and snap-fit ​​blocks 31 are slidably arranged in the snap-fit ​​grooves 32. The snap-fit ​​blocks 31 are welded to the inner rod 3. When the inner rod 3 and the sleeve rod 2 slide relative to each other, the inner rod 3 drives the snap-fit ​​blocks 31 to move along the snap-fit ​​grooves 32. Under the action of the snap-fit ​​blocks 31, the sleeve rod 2 and the inner rod 3 are not easy to rotate relative to each other.

[0034] Reference Figures 1 to 5The diameter of the telescopic hole 81 near the inner rod 3 is larger than the diameter of the telescopic hole 81 away from the inner rod 3. The diameter of the telescopic hole 81 away from the inner rod 3 is larger than the diameter of the expansion nail 8 away from the inner rod 3. The diameter of the telescopic hole 81 away from the inner rod 3 is smaller than the diameter of the expansion nail 8 near the inner rod 3. This makes it difficult for the expansion nail 8 to slip off the sleeve rod 2 under the restriction of the telescopic hole 81.

[0035] The implementation principle of a high-tensile-strength antibacterial wrapping film in this application embodiment is as follows: A composite film 12 is formed by pressing together a first silver ion membrane 121, a first nylon membrane 122, a pressure-resistant membrane 123, a second nylon membrane 124, and a second silver ion membrane 125. The composite film 12 is wound around a paper tube 11 to form a film roll body 1, which gives the film roll body 1 high tensile strength and antibacterial properties. When the paper tube 11 is fitted onto the sleeve rod 2, the insert 5 is first inserted into the first insertion hole 6. Under the action of the spring 41, the insert 5 is not easy to slip out of the first insertion hole 6. At this time, the expansion pin 8 is retracted into the telescopic hole 81, which makes it easy for the paper tube 11 to be fitted onto the sleeve rod 2. After the paper tube 11 is fitted onto the sleeve rod 2, the connecting rod 4 is pulled outward to compress the spring 41. The connecting rod 4 drives the inner rod 3 to move, so that the expansion pin 8 abuts against the inside of the paper tube 11, which provides a certain degree of support and fixation for the film roll body 1. Then, the connecting rod 4 is rotated so that the connector 5 faces the second insertion hole 7. Then, under the action of the spring 41, the connector 5 is inserted into the second insertion hole 7, keeping the inner rod 3 and the sleeve rod 2 relatively stationary through the connector 5. At the same time, the connector 5 is less likely to slip out of the second insertion hole 7 under the action of the spring 41, making it less likely for the inner rod 3 and the sleeve rod 2 to move relative to each other under external force, reducing the possibility of the membrane roll body 1 shaking or the sleeve rod 2 falling off. When using the composite membrane 12, hold the handle with one hand and pull one end of the composite membrane 12 with the other. At this time, the composite membrane 12 rotates between the sleeve rod 2 and the handle, achieving the effect of easy access to the composite membrane 12.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high tensile strength antibacterial wrapping film, comprising a film roll body, a sleeve rod inserted into the film roll body, a plurality of expansion pins passing through the sleeve rod, one end of each expansion pin abutting against the film roll body, and the other end of each expansion pin abutting against an inner rod, the inner rod being slidably connected to the sleeve rod, characterized in that: A connecting rod is provided through one end of the sleeve rod, and one end of the connecting rod is rotatably connected to the inner rod. A plug-in is provided at the other end of the connecting rod. Several first insertion holes are opened on the sleeve rod facing the plug-in, and the first insertion holes are for the plug-in to be inserted. A plug-in block is fixedly provided on the sleeve rod facing the plug-in, and several second insertion holes are opened on the plug-in block, and the second insertion holes are for the plug-in to be inserted. A spring is sleeved on the connecting rod, and the spring abuts against the sleeve rod and the inner rod.

2. The antibacterial wrapping film with high tensile strength according to claim 1, characterized in that: The connector includes a radial rod and an axial rod. The radial rod is arranged along the radial direction of the membrane roll body, and the axial rod is arranged along the axial direction of the membrane roll body. The end of the connecting rod away from the inner rod is fixedly connected to the radial rod, and the end of the radial rod away from the connecting rod is fixedly connected to the axial rod. The first insertion hole is for inserting the axial rod, and the second insertion hole is for inserting the axial rod.

3. The antibacterial wrapping film with high tensile strength according to claim 1, characterized in that: The sleeve rod has an inner cavity. The inner rod, the end of the connecting rod away from the plug and the spring are all located in the inner cavity. Several snap-fit ​​grooves are formed in the inner cavity. Snap-fit ​​blocks are slidably arranged in the snap-fit ​​grooves and are fixedly connected to the inner rod.

4. The antibacterial wrapping film with high tensile strength according to claim 3, characterized in that: Several telescopic holes are formed through the sleeve rod, and the telescopic holes are interconnected with the inner cavity. The expansion nail is slidably disposed in the telescopic holes. The diameter of the telescopic hole near the inner rod is larger than the diameter of the telescopic hole away from the inner rod. The diameter of the telescopic hole away from the inner rod is larger than the diameter of the expansion nail away from the inner rod. The diameter of the telescopic hole away from the inner rod is smaller than the diameter of the expansion nail near the inner rod.

5. The antibacterial wrapping film with high tensile strength according to claim 1, characterized in that: The outer wall of the inner rod has several inclined grooves. The end of the expansion nail away from the film roll body abuts against the inner wall of the inclined groove. The end of the inclined groove near the axis of the inner rod is close to the connecting rod, and the end of the inclined groove away from the axis of the inner rod is away from the connecting rod.

6. The antibacterial wrapping film with high tensile strength according to claim 1, characterized in that: The end of the sleeve away from the connecting rod is rotatably fitted with a handle.

7. The antibacterial wrapping film with high tensile strength according to claim 1, characterized in that: The film roll body includes a paper tube and a composite film. The sleeve rod is inserted into the paper tube, and the end of the expansion nail away from the inner rod abuts against the paper tube. The composite film is wound around the paper tube.

8. The antibacterial wrapping film with high tensile strength according to claim 7, characterized in that: The composite membrane includes a first silver ion membrane, a first nylon membrane, a pressure-resistant membrane, a second nylon membrane, and a second silver ion membrane. One side of the pressure-resistant membrane is connected to the first nylon membrane, and the other side of the pressure-resistant membrane is connected to the second nylon membrane. The side of the first nylon membrane away from the pressure-resistant membrane is connected to the first silver ion membrane, and the side of the second nylon membrane away from the pressure-resistant membrane is connected to the second silver ion membrane.

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