Environment-friendly paper packaging barrel

Abstract

An environment-friendly paper packaging barrel comprises a paper barrel body which is provided with a barrel body cavity, the bottom of the paper barrel body is closed, and an opening is formed in the upper portion of the paper barrel body. The barrel cover is provided with a caulking groove; the tightening ring is provided with a tightening ring opening, one end of the tightening ring is provided with a pull tab seat, and the other end is provided with a pressure loop seat; the utility model relates to a zipper pull, which comprises a zipper pull seat, a zipper pull and a pressing loop, and is characterized in that the zipper pull seat and the tightening loop form an integral structure at the position of a port at one end of an opening of the tightening loop, a zipper pull hinging end shaft embedding cavity is formed on one outward side of the zipper pull seat, and the pressing loop seat and the tightening loop form an integral structure at the position of a port at the other end of the opening of the tightening loop. A pressing loop hinge end shaft embedding concave cavity is formed in the outward side of the pressing loop seat, a pulling piece hinge end hinge shaft is arranged at one end of the pulling piece, a pulling piece free end hinge shaft is arranged at the other end of the pulling piece, a pressing loop hinge shaft is formed at one end of the pressing loop hinge end, and the pressing loop hinge shaft is embedded into the pressing loop hinge end shaft embedding concave cavity in a non-retreating mode. The utility model has the advantages that the manufacturing process is reduced, the manufacturing efficiency is improved, and the inseparable integrated effect with the tightening ring is embodied.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging materials, and in particular relates to an environmentally friendly paper packaging barrel. Background Art

[0002] As we all know, many materials or raw materials such as chemical dyes (such as azo dyes, anthraquinone dyes, phthalocyanine dyes, acid dyes, cationic dyes and disperse dyes, etc.), chemical pigments (such as organic pigments, inorganic pigments and special pigments, etc.), electronic powders (such as metal powders, ceramic powders, magnetic powders and semiconductor powders, etc.) usually require that the packaging used is economical and cheap, and that it is required to be non-loose, easy to stack and repeatedly recyclable after use in the logistics process to save resources and meet the requirements of circular economy. A typical example of such packaging is a non-metallic packaging barrel, more specifically a paper packaging barrel.

[0003] The packaging process of the materials not limited to the above mentioned is: first put them into a PVC liner bag, and then put the PVC liner bag together with the materials therein into a packaging barrel equipped with a barrel cover. In the public Chinese patent documents, technical information on paper packaging barrels can be found, such as CN200957921Y (packaging barrel) and CN205186710U (paper packaging barrel). Although the above two patents each have the technical effects recorded in the technical effect column of their specifications, they have similar shortcomings. For example, in CN200957921Y, one of the deficiencies is that the pull-tab seat and the pressure-loop seat are made separately from the fastening ring, which is usually made of plastic and is used to position the lid and the barrel body, and then they are riveted to the fastening ring respectively by rivets. Specifically, the pull-tab seat is riveted to one end of the fastening ring by rivets, and the pressure-loop seat is also riveted to the other end of the fastening ring by rivets, so that the fastening ring can be locked or unlocked by the pressure loop connected to the pull-tab seat and the pressure loop seat at the same time. Therefore, there are many processing steps and the manufacturing efficiency is low. The second deficiency is that the pressure loop needs to be connected to the pull-tab seat and the pressure loop by independent pull-tab pins and pressure loop pins respectively. The seat is hinged (pivotally connected), so not only is the structure loose and the assembly workload is large, but the overall structure lacks simplicity; thirdly, since the aforementioned pull-tab pin and pressure-hook pin are both made of metal, and it is necessary to open a pin hole on the pull-tab seat for the pull-tab pin to pass through, and to form a pair of pressure-hook pin ears on the pressure-hook seat and to open a pressure-hook pin hole on each of the pair of pressure-hook pin ears, it is also necessary to hinge a pair of pull tabs on the pressure hook for hinged connection with the pull-tab seat through the pull-tab pin, and to form a pair of pressure-hook seat hinge ears on the pressure hook seat, and to form a pair of hinge ears with pressure-hook pin holes on the pressure hook, so that the pressure hook can be hinged to the hinge ears with the pressure-hook pin holes by the aforementioned pressure-hook pin. Such a structure not only further increases the trouble of manufacturing and assembly, but also the pull tab pin and / or the pressure loop pin may escape, affecting repeated recycling and reuse (for details, please refer to the third paragraph from the bottom of page 2 and the last paragraph of page 3 of the specification of CN200957921Y, as well as the two figures of the patent). Since CN205186710U basically has the same shortcomings as CN200957921Y, they will not be repeated here. Utility Model Content

[0004] The task of the utility model is to provide an environment-friendly paper packaging barrel which helps to abandon independent pull-tab seats and pressure-hook seats, thereby significantly reducing the production process and improving the production efficiency, and embodies the inseparable integral fastening effect between the pull-tab seat and the tight hoop, is conducive to eliminating the use of pull-tab pins and pressure-hook pins as independent components, thereby embodying the simplicity of the overall structure, and will not affect the recycling due to the escape of the pins, which is beneficial to embodying good environmental protection and avoiding damage to the environment.

[0005] The task of the utility model is accomplished in this way: an environmentally friendly paper packaging barrel comprises a paper barrel body with a barrel body cavity, a closed bottom and an open top, a barrel body upper edge reinforcement folding edge folded toward the direction of the barrel body cavity wall and overlapping with the inner side of the upper edge of the paper barrel body is formed around the circumferential direction of the open part of the paper barrel body, a barrel bottom stacking strength compensation ring is formed at the bottom of the paper barrel body and around the four sides of the paper barrel body, and the barrel bottom plate of the paper barrel body is placed in a non-contact state with the floor by the barrel bottom stacking strength compensation ring; a barrel cover, in the circumferential direction of the barrel cover and at a position corresponding to the upper edge of the paper barrel body A groove with an opening facing downwards is formed, and the groove is fitted with the upper edge of the barrel body of the paper barrel and the reinforcing folded edge of the upper edge of the barrel body; a clamp ring used to fasten or release the barrel cover and the upper edge of the barrel body of the paper barrel, the clamp ring is formed with a clamp ring opening, a pull-tab seat is provided at a position of one end of the clamp ring facing the opening of the clamp ring and facing outwards, and a pressure loop seat is provided at a position of the other end of the clamp ring facing the opening of the clamp ring and also facing outwards; a pull tab and a pressure loop, one end of the pull tab is formed as a pull-tab hinged end hinged to the pull tab seat, the other end of the pull tab is formed as a pull tab free end, and one end of the pressure loop is formed as a pressure loop hinged to the pressure loop seat. The middle part of the pressure loop is formed with a pull-tab free end hinge shaft connecting cavity hinged to the free end of the pull-tab, and the other end of the pressure loop is formed as a pressure loop operating end for locking or unlocking the tight hoop, characterized in that the pull-tab seat is formed as an integral structure with the tight hoop at the position of one end port of the tight hoop opening of the tight hoop, and a pull-tab hinge end shaft embedding cavity is formed on the side of the pull-tab seat facing outward, the pressure loop seat is formed as an integral structure with the tight hoop at the position of the other end port of the tight hoop opening of the tight hoop, and a pressure loop hinge end shaft embedding cavity is formed on the side of the pressure loop seat facing outward, and one end of the pull tab is formed with a pull tab The hinge shaft of the hinged end of the pull tab is constructed, and the hinge shaft of the hinged end of the pull tab is irremovably embedded in the embedding cavity of the hinged end axis of the pull tab and forms a free pivoting relationship with the embedding cavity of the hinged end axis of the pull tab. The other end of the pull tab is constructed with a hinge shaft of the free end of the pull tab that forms an integral structure with the pull tab. The hinge shaft of the free end of the pull tab is irremovably embedded in the connecting cavity of the hinge shaft of the free end of the pull tab on the side of the pressure loop facing the pull tab, and forms a free pivoting relationship with the connecting cavity of the hinge shaft of the free end of the pull tab. A pressure loop hinge shaft is constructed at one end of the hinged end of the pressure loop, and the pressure loop hinge shaft is irremovably embedded in the embedding cavity of the hinged end axis of the pressure loop and forms a free pivoting relationship with the embedding cavity of the hinged end axis of the pressure loop.

[0006] In a specific embodiment of the present invention, the width of the embedding groove is the sum of the thicknesses of the paper barrel body and the upper edge.

[0007] In another specific embodiment of the utility model, a compression loop tube component insertion hole is provided on the compression loop and located in the middle of the compression loop, and a tightening ring hole is provided on the tightening ring and at a position corresponding to the compression loop tube component insertion hole, and the compression loop is locked by inserting the compression loop tube component into the tightening ring hole through the compression loop tube component insertion hole.

[0008] In another specific embodiment of the present invention, the shape of the pressure loop pipe member is 7-shaped.

[0009] In another specific embodiment of the utility model, the barrel cover, the tightening ring, the pull tab and the pressure loop are formed by plastic molding, and when the barrel cover is formed by plastic molding, the embedding groove is formed integrally with the barrel cover; when the tightening ring is formed by plastic molding, the pull tab seat and the pressure loop seat are formed integrally with the tightening ring; when the pull tab is formed by plastic molding, the hinge axis of the pull tab hinged end and the hinge axis of the pull tab free end are formed integrally with the pull tab; when the pressure loop is formed by plastic molding, the pull tab free end hinge axis connecting cavity and the pressure loop hinge axis are formed integrally with the pressure loop.

[0010] In another specific embodiment of the utility model, a barrel cover reinforcement body is formed at the edge portion of the barrel cover and around the circumference of the barrel cover, and the cross-sectional shape of the barrel cover reinforcement body is ︹-shaped.

[0011] In a more specific embodiment of the present invention, when the pull-tab seat is molded with the tight hoop, the recessed cavity for embedding the hinged end shaft of the pull-tab is formed integrally with the pull-tab seat; when the pressure loop seat is molded with the tight hoop, the recessed cavity for embedding the hinged end shaft of the pressure loop is formed integrally with the pressure loop seat.

[0012] In a further specific embodiment of the present invention, a barrel cover edge groove is formed on the inner side of the tightening ring and around the circumferential direction of the tightening ring, and the surrounding edge portions of the barrel cover cooperate with the barrel cover edge groove.

[0013] In yet another specific embodiment of the present invention, the plastic is PP.

[0014] The technical effect of the technical solution provided by the utility model is that: since the pull-tab seat and the pressure-hook seat as independent components are abandoned and the pull-tab seat and the pressure-hook seat directly form an integrated structure with the tight hoop, it is helpful to significantly reduce the production process and improve the production efficiency and embody the inseparable integration effect between the tight hoop; since the hinged axis of the pull-tab hinged end and the hinged axis of the pressure-hook are respectively formed into an integrated structure with the pull-tab and the pressure-hook, there is no need to use the separate components of the pull-tab pin shaft and the pressure-hook pin shaft as independent components as in the prior art, so that the simplicity of the overall structure can be embodied and the pin shaft will not escape to affect the recycling; since the paper barrel body, the barrel cover and the tight hoop have good recyclability, it is possible to avoid damage to the environment and help save resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of an embodiment of the utility model;

[0016] Figure 2 for Figure 1 The pull tab and the pressure loop are shown as exploded views before being assembled with the pull tab seat and the pressure loop seat respectively;

[0017] Figure 3 for Figure 1 The schematic diagram of the pull tab and the pressure loop after being assembled with the pull tab seat and the pressure loop seat respectively;

[0018] Figure 4 for Figure 1 The schematic diagram shown is a diagram of the barrel cover matching with the upper part of the barrel body of the paper barrel. DETAILED DESCRIPTION

[0019] See also Figure 1 and Figure 3, showing a paper barrel body 1 with a barrel body cavity 11 and a closed bottom and an open top, at the aforementioned open portion of the paper barrel body 1, a barrel body upper edge reinforcement fold 121 is formed in the circumferential direction around the paper barrel body 1, which is folded toward the direction of the cavity wall of the aforementioned barrel body cavity 11 and overlaps with the upper edge 12 of the paper barrel body 1, and a barrel bottom stacking strength compensation ring 13 is formed at the bottom of the paper barrel body 1 and around the four sides of the paper barrel body 1, and the barrel bottom plate 14 of the paper barrel body 1 is placed in a non-contact state with the floor by the barrel bottom stacking strength compensation ring 13; showing a barrel cover 2, in the circumferential direction of the barrel cover 2 and at a position corresponding to the upper edge 12 of the paper barrel body 1, a downwardly opening embedded groove 21 is formed, and the embedded groove 21 is embedded with the upper edge 12 of the paper barrel body 1 and the aforementioned barrel body upper edge reinforcement fold 121; showing a barrel cover for the aforementioned barrel cover 2 is a clamp ring 3 for fastening or unfastening with the upper edge 12 of the paper barrel body 1, and the clamp ring 3 is formed with a clamp ring opening 31, a pull-tab seat 32 is provided at one end of the clamp ring 3 facing the clamp ring opening 31 and facing outward, and a pressure loop seat 33 is provided at the other end of the clamp ring 3 facing the clamp ring opening 31 and also facing outward; a pull-tab 4 and a pressure loop 5 are shown, and the pull-tab 4 and a pressure loop 5 are shown. One end of the sheet 4 is configured as a pull-tab hinged end 41 hinged to the pull-tab seat 32, and the other end of the pull-tab 4 is configured as a pull-tab free end 42, one end of the pressure loop 5 is configured as a pressure loop hinged end 51 hinged to the pressure loop seat 33, the middle part of the pressure loop 5 is configured with a pull-tab free end hinge axis connecting cavity 52 hinged to the aforementioned pull-tab free end 42, and the other end of the pressure loop 5 is configured as a pressure loop operating end 53 used to lock or unlock the aforementioned tightening ring 3.

[0020] The technical key points of the technical solution provided by the utility model are as follows: the aforementioned pull-tab seat 32 is located at one end of the tightening ring opening 31 of the aforementioned tightening ring 3 to form an integral structure with the aforementioned tightening ring 3, and a pull-tab hinged end shaft embedding cavity 321 is formed on the side of the pull-tab seat 32 facing outward, the aforementioned pressure loop seat 33 is located at the other end of the tightening ring opening 31 of the aforementioned tightening ring 3 to form an integral structure with the aforementioned tightening ring 3, and a pressure loop hinged end shaft embedding cavity 331 is formed on the side of the pressure loop seat 33 facing outward, and one end of the aforementioned pull-tab 4 is formed with a pull-tab hinged end hinged shaft 43 that forms an integral structure with the pull-tab 4, and the pull-tab hinged end hinged shaft 43 is irremovably embedded in The aforementioned pull-tab hinge end axis is embedded in the recessed cavity 321 and forms a freely pivoting relationship with the pull-tab hinge end axis embedded in the recessed cavity 321. The other end of the pull-tab 4 is constituted by a pull-tab free end hinge axis 44 which forms an integral structure with the pull-tab 4. The pull-tab free end hinge axis 44 is inseparably embedded in the aforementioned pull-tab free end hinge axis connecting cavity 52 on the side of the aforementioned pressure loop 5 facing the pull-tab 4 and forms a freely pivoting relationship with the pull-tab free end hinge axis connecting cavity 52. ​​A pressure loop hinge axis 511 is constituted at one end of the pressure loop hinge end 51. The pressure loop hinge axis 511 is irremovably embedded in the aforementioned pressure loop hinge end axis embedded in the recessed cavity 331 and forms a freely pivoting relationship with the pressure loop hinge end axis embedded in the recessed cavity 331.

[0021] The specific meaning of the "non-retractable" mentioned twice by the applicant above is: when the pull tab 4 is assembled with the pull tab seat 32, the pull tab hinge end hinge shaft 43 is embedded in the pull tab hinge end shaft embedding cavity 321 by virtue of a slight elastic effect, but once embedded, it cannot be withdrawn, but the pull tab hinge end hinge shaft 43 can rotate in the pull tab hinge end shaft embedding cavity 321. Similarly, the pressure loop hinge shaft 511 is embedded in the pressure loop hinge end shaft embedding cavity 331 by virtue of a slight elastic effect, but once embedded, it cannot be withdrawn, but the pressure loop hinge shaft 511 can rotate in the pressure loop hinge end shaft embedding cavity 331.

[0022] See also Figure 4 And combined with Figure 1 Since the width of the embedding groove 21 is the sum of the thicknesses of the paper barrel body 1 and the upper edge 12, the barrel cover 2 can be reliably fitted with the upper edge 12 of the paper barrel body 1.

[0023] Depend on Figures 1 to 3 As shown, a compression loop tube component insertion hole 54 is provided on the aforementioned compression loop 5 and located in the middle of the compression loop 5, and a clamping ring hole 34 is provided on the aforementioned clamping ring 3 and at a position corresponding to the compression loop tube component insertion hole 54, and the compression loop 5 is locked by inserting the compression loop tube component 6 into the aforementioned clamping ring hole 34 through the compression loop tube component insertion hole 54.

[0024] In this embodiment, the aforementioned compression loop pipe member 6 is in a 7-shape.

[0025] In the present embodiment, the aforementioned barrel cover 2, the aforementioned tightening ring 3, the pull tab 4 and the pressure hook 5 are formed by plastic molding, and when the barrel cover 2 is formed by plastic molding, the aforementioned embedding groove 21 is formed integrally with the barrel cover 2; when the aforementioned tightening ring 3 is formed by plastic molding, the aforementioned pull tab seat 32 and the pressure hook seat 33 are formed integrally with the tightening ring 3; when the aforementioned pull tab 4 is formed by plastic molding, the aforementioned pull tab hinge end hinge axis 43 and the pull tab free end hinge axis 44 are formed integrally with the pull tab 4; when the aforementioned pressure hook 5 is formed by plastic molding, the aforementioned pull tab free end hinge axis connecting cavity 52 and the pressure hook hinge axis 511 are formed integrally with the pressure hook 5.

[0026] In the present embodiment, a barrel cover reinforcement body 22 is formed at the edge of the barrel cover 2 and around the circumference of the barrel cover 2, and the cross-sectional shape of the barrel cover reinforcement body 22 is ︹-shaped.

[0027] When the pull-tab seat 32 is molded with the tightening ring 3, the pull-tab hinged end shaft embedding cavity 321 is formed integrally with the pull-tab seat 32; when the pressure loop seat 33 is molded with the tightening ring 3, the pressure loop hinged end shaft embedding cavity 331 is formed integrally with the pressure loop seat 33.

[0028] Depend on Figures 1 to 3 As shown, a barrel cover edge groove 35 is formed on the inner side of the aforementioned clamping ring 3 and around the circumferential direction of the clamping ring 3, and the surrounding edge parts of the aforementioned barrel cover 2 are matched with the barrel cover edge groove 35.

[0029] In this embodiment, the aforementioned plastic is PP, that is, the barrel cover 2, the tightening ring 3, the pull tab 4 and the pressing loop 5 are made of PP.

[0030] After the materials not limited to those mentioned by the applicant in the background technology column are loaded into the liner bag, the liner bag together with the materials are placed in the barrel cavity 11, and then the barrel cover 2 is covered, so that the upper edge 12 together with the barrel upper edge reinforcement fold 121 are embedded in the embedding groove 21, and then the tight hoop 3 is put around the edge of the barrel cover 2 and put outside the barrel cover 2, and then it is manually tightened in a clockwise direction (with the Figure 1The pressure loop 5 is pulled by the pressure loop operating end 53 of the pressure loop 5, and the pull tab free end hinge shaft connection cavity 52 of the pressure loop 5 drives the pull tab free end hinge shaft 44, so that the pull tab hinge end hinge shaft 43 of the pull tab 4 drives the pull tab seat 32 through the pull tab hinge end shaft embedding cavity 321, so that the aforementioned tight ring opening 31 is closed, so that the pressure loop 5 drives the pull tab 4 until the tight ring 3 reliably clamps the barrel cover 2 on the paper barrel body 1. After the barrel cover 2 is fastened to the upper edge 12 of the paper barrel body 1 and the upper edge reinforcement fold 121 of the barrel body by the tight ring 3, the paper barrel body 1 containing materials can be put into the logistics link. When the raw materials in the barrel body cavity 11 are to be taken, the pressure loop operating end 53 can be operated in the opposite direction relative to the aforementioned operation to release the control of the tight ring 3 on the barrel cover 2 and lift the barrel cover.

[0031] In summary, the technical solution provided by the utility model makes up for the shortcomings of the existing technology, successfully completes the invention task, and faithfully realizes the technical effects stated by the applicant in the technical effect column above.

Claims

1. An environmentally friendly paper packaging barrel, comprising a paper barrel body (1) having a barrel body cavity (11) and a bottom that is closed and an upper portion that is open, wherein a barrel body upper edge reinforcement fold (121) is formed in the circumferential direction of the barrel body (1) at the open portion of the barrel body (1) and folded toward the cavity wall of the barrel body cavity (11) and overlapped with the inner side of the upper edge (12) of the barrel body (1), and a barrel bottom reinforcement fold (121) is formed at the bottom of the barrel body (1) and around the barrel body (1) A stacking strength compensation ring (13), by which the barrel bottom stacking strength compensation ring (13) keeps the barrel bottom plate (14) of the paper barrel body (1) in a non-contact state with the floor; a barrel cover (2), in the circumferential direction of the barrel cover (2) and at a position corresponding to the upper edge (12) of the paper barrel body (1), a downwardly opening embedded groove (21) is formed, the embedded groove (21) is embedded with the upper edge (12) of the paper barrel body (1) and the barrel upper edge reinforcement fold (121); a barrel cover (2) is used to ) is fastened or unfastened to the upper edge (12) of the paper barrel body (1), the fastening ring (3) is formed with a fastening ring opening (31), a pull-tab seat (32) is provided at a position of one end of the fastening ring (3) facing the fastening ring opening (31) and facing outward, and a pressure ring seat (33) is provided at a position of the other end of the fastening ring (3) facing the fastening ring opening (31) and also facing outward; a pull-tab (4) and a pressure ring (5), the pull-tab (4) One end of the pull tab (4) is configured as a pull tab hinged end (41) hinged to the pull tab seat (32), and the other end of the pull tab (4) is configured as a pull tab free end (42), one end of the pressure loop (5) is configured as a pressure loop hinged end (51) hinged to the pressure loop seat (33), a pull tab free end hinge shaft connecting cavity (52) hinged to the pull tab free end (42) is configured in the middle of the pressure loop (5), and the other end of the pressure loop (5) is configured as a pressure loop operating end (53) for locking or unlocking with the tightening ring (3), characterized in that: The pull-tab seat (32) is integrally formed with the tightening ring (3) at the position of one end port of the tightening ring opening (31) of the tightening ring (3), and a pull-tab hinge end shaft embedding cavity (321) is formed on the outward side of the pull-tab seat (32); the pressure loop seat (33) is integrally formed with the tightening ring (3) at the position of the other end port of the tightening ring opening (31) of the tightening ring (3), and a pressure loop hinge end shaft embedding cavity (331) is formed on the outward side of the pressure loop seat (33); one end of the pull-tab (4) is formed with a pull-tab hinge end hinge shaft (43) which is integrally formed with the pull-tab (4), and the pull-tab hinge end hinge shaft (43) is irremovably embedded in the pull-tab hinge end shaft embedding cavity (331) of the pull-tab. A recessed cavity (321) is disposed on the pull tab (4) and forms a freely pivoting relationship with the recessed cavity (321) of the pull tab hinge end axis. The other end of the pull tab (4) is formed with a pull tab free end hinge axis (44) which forms an integral structure with the pull tab (4). The pull tab free end hinge axis (44) is inseparably embedded in the pull tab free end hinge axis connecting cavity (52) on the side of the pressure loop (5) facing the pull tab (4) and forms a freely pivoting relationship with the pull tab free end hinge axis connecting cavity (52). A pressure loop hinge axis (511) is formed at one end of the pressure loop hinge end (51). The pressure loop hinge axis (511) is inseparably embedded in the recessed cavity (331) of the pressure loop hinge end axis and forms a freely pivoting relationship with the recessed cavity (331) of the pressure loop hinge end axis.

2. The environmentally friendly paper packaging barrel according to claim 1, characterized in that: The width of the embedding groove (21) is the sum of the thicknesses of the paper barrel body (1) and the upper edge (12).

3. The environmentally friendly paper packaging barrel according to claim 1, characterized in that: A compression loop tube member insertion hole (54) is provided on the compression loop (5) and located in the middle of the compression loop (5); a tightening ring hole (34) is provided on the tightening ring (3) and located at a position corresponding to the compression loop tube member insertion hole (54); the compression loop tube member (6) is inserted into the tightening ring hole (34) through the compression loop tube member insertion hole (54) to lock the compression loop (5).

4. The environmentally friendly paper packaging barrel according to claim 3 is characterized in that: The shape of the pressure loop pipe member (6) is a 7-shape.

5. The environmentally friendly paper packaging barrel according to claim 1, characterized in that: The barrel cover (2), the tightening ring (3), the pull tab (4) and the pressure loop (5) are formed by plastic molding, and when the barrel cover (2) is formed by plastic molding, the embedding groove (21) is formed integrally with the barrel cover (2); when the tightening ring (3) is formed by plastic molding, the pull tab seat (32) and the pressure loop seat (33) are formed integrally with the tightening ring (3); when the pull tab (4) is formed by plastic molding, the hinge axis (43) at the hinge end of the pull tab and the hinge axis (44) at the free end of the pull tab are formed integrally with the pull tab (4); when the pressure loop (5) is formed by plastic molding, the connecting cavity (52) of the hinge axis at the free end of the pull tab and the hinge axis (511) of the pressure loop are formed integrally with the pressure loop (5).

6. The environmentally friendly paper packaging barrel according to claim 1 or 5, characterized in that: A barrel cover reinforcement body (22) is formed at the edge of the barrel cover (2) and around the circumferential direction of the barrel cover (2), and the cross-sectional shape of the barrel cover reinforcement body (22) is in a ︹ shape.

7. The environmentally friendly paper packaging barrel according to claim 5, characterized in that: When the pull-tab seat (32) is molded with the tight hoop (3), the pull-tab hinge end shaft embedding cavity (321) is formed integrally with the pull-tab seat (32); when the pressure loop seat (33) is molded with the tight hoop (3), the pressure loop hinge end shaft embedding cavity (331) is formed integrally with the pressure loop seat (33).

8. The environmentally friendly paper packaging barrel according to claim 1, characterized in that: A barrel cover edge groove (35) is formed on the inner side of the tightening ring (3) and around the circumferential direction of the tightening ring (3), and the surrounding edge parts of the barrel cover (2) are matched with the barrel cover edge groove (35).

9. The environmentally friendly paper packaging barrel according to claim 5, characterized in that: The plastic is PP.

Images