A kind of oily paint packaging container device
By using the double -layer cover structure and multi -layer sealing structure in the oily coating packaging container, the problem of poor inner sealing effect and easy to fall off, and the effective sealing of oily coatings and the effective pressure of the inner cover, ensuring that it is guaranteed The quality of coatings and the service life of the container.
Patent Information
- Application Number
- CN202411660017.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2044-11-20
AI Technical Summary
In the existing oil-based coating packaging containers, the inner sleeve has poor sealing effect and is prone to fall off, resulting in oil-based coatings sticking to the container and cannot meet the high requirements for oil-based coatings for sealing.
Adopt a double -layer cover structure with a multi -layer seal structure, to form the first seal structure and the second seal structure through the protruding and groove structure on the inner cover and the groove. , Prevent the internal set from falling off.
The efficient sealing of oily coatings is achieved, the volatilization and leakage of oily coatings are prevented, the quality and performance stability of the coating is guaranteed, and the coating adhesion problem caused by the inner cover is avoided, and the service life of the container is prolonged.
Smart Images

Figure CN119142651B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of packaging containers, and in particular to an oily paint packaging container device. Background Art
[0002] During the production and processing of paint, it needs to be packaged, so packaging containers are needed. Existing packaging containers directly package the paint inside and then seal it. The main component of oil-based paint is an organic solvent that is easy to volatilize. In addition to the problem of solvent volatilization, it is also easily affected by oxygen and moisture in the air. Oxygen may cause oxidation reactions in the components of the paint. Except for some special water-based paints, the sealing requirements may also be very high. Generally speaking, oil-based paints have higher requirements for sealing.
[0003] The prior art discloses an inner sleeve for oily paint packaging containers (publication number CN110525782A). This invention can effectively avoid problems such as oily paint contaminating containers that are difficult to clean and oily paint residues, thereby realizing the recycling of oily paint containers and greatly reducing the number of dangerous packaging materials to be disposed of, thereby achieving the purpose of environmental protection. Secondly, the static electricity in the barrel is effectively diffused to the packaging container through the inner sleeve, and then diffused from the packaging container to the ground, thereby avoiding flash explosions caused by static electricity. However, this solution still has the following problems:
[0004] In this solution, an inner sleeve is used to prevent oily paint from contaminating the container, and static electricity is diffused through the inner sleeve. However, the only effective way to fix the inner sleeve is the inner sleeve buckle edge of the upper cover, and the sealing effect obtained is poor, which is difficult to meet the sealing requirements of oily paint. In addition, this inner sleeve setting method has a small pressing force on the inner sleeve. During use and transportation, the inner sleeve may fall off into the container, and the oily paint may still contaminate the container. Summary of the invention
[0005] The purpose of the present invention is to provide a technical solution, which adopts a double-layer cover structure in combination with a multi-layer sealing structure to ensure the sealing effect while obtaining a more effective compression method for the inner sleeve, and at the same time provide a temporary method for taking the paint, so as to solve the problems in the prior art raised in the above background technology.
[0006] To achieve the above object, the present invention adopts the following technical solutions:
[0007] An oily paint packaging container device, comprising:
[0008] A container barrel body and an inner sleeve, wherein the inner sleeve is arranged inside the container barrel body, an inner cover and an outer cover are arranged on the top of the container barrel body, the inner cover presses and buckles the inner sleeve on the barrel edge of the container barrel body, and the outer cover buckles the outside of the inner cover, and the oily paint is stored inside the inner sleeve;
[0009] A first clamping protrusion is provided on the top of the inner side wall of the container barrel body, a second clamping protrusion matching with the first clamping protrusion is provided on the bottom of the inner cover, and the edge of the inner sleeve is clamped between the first clamping protrusion and the second clamping protrusion to form a first sealing structure; a first step protrusion is provided on the outer side of the barrel edge of the container barrel body, a first groove is provided on the outer ring of the inner cover, a second step protrusion matching with the first step protrusion is provided on the inner side wall of the first groove, and the edge of the inner sleeve is clamped between the first step protrusion and the second step protrusion to form a second sealing structure; the first sealing structure and the second sealing structure seal the packaging container while clamping the inner sleeve to prevent the inner sleeve from falling off into the interior of the container barrel body.
[0010] Preferably, the outer edge of the outer cover is provided with a second groove, the second groove is buckled on the outer edge of the inner cover, and the second groove is located above the first groove.
[0011] Preferably, a fitting portion distributed in a circular array is provided at the bottom of the edge of the outer cover, and the fitting portion is configured as a deformable metal sheet structure. After the fitting portion is deformed and pressed tightly against the edge of the inner cover, it provides an inward pressing force for the second step protrusion and simultaneously provides a downward pressing force for the second pressing protrusion.
[0012] Preferably, the inner sleeve is configured as a toughened plastic bag-like structure, and a first connecting ring is provided on the bag-like edge of the inner sleeve. After the inner sleeve is compressed by the first sealing structure and the second sealing structure, the first connecting ring is located outside the container barrel.
[0013] Preferably, the outer cover is configured as a metal cover body with a deformable edge, and the inner cover is configured as a plastic cover body with a deformable edge.
[0014] Preferably, the inner cover and the outer cover are provided with a paint extraction structure, and the paint extraction structure includes an extraction port and an extraction tube. At least two sets of movable closed sliders are provided inside the extraction port. In a normal state, the two sets of closed sliders make the extraction port in a closed state. When the extraction port is in an open state, the extraction tube can be inserted into the inner sleeve of the container barrel to extract oily paint.
[0015] Preferably, the outer cover is provided with a mounting hole for mounting the extraction port, the inner cover is provided with a second connecting ring, and the extraction port and the second connecting ring are detachably sealed and butted against each other via a snap ring.
[0016] Preferably, the two groups of closed sliders are symmetrically arranged and slidably installed inside the extraction port, the side of the extraction port is provided with a sliding groove for the sliding installation of the closed slider, the closed slider is connected to a support rod, the side of the extraction port is provided with a socket for inserting the support rod, the support rod is sleeved with a support spring, the support spring is supported between the closed slider and the inner side wall of the extraction port, and the inner top of the two groups of closed sliders is provided with a support groove.
[0017] Preferably, the support groove is configured as a stepped groove with an inclined surface, and the external sliding sleeve of the extraction tube is provided with a support member. When the support member is supported in the stepped groove, the two groups of closed sliding blocks are propped open by the support member so that a gap exists therebetween, and the extraction tube can be inserted into the gap to extract the paint. After the extraction is completed, the support member is removed and the two groups of closed sliding blocks are reclosed and sealed.
[0018] Preferably, the bottom of the extraction tube is provided with an extension end and the end is provided with a protective structure, so as to fully extract the paint in the inner sleeve while preventing the extraction tube from damaging the inner sleeve, and a hand-held part is provided on the support member.
[0019] Technical effects and advantages of the present invention: Compared with the prior art, the oily paint packaging container device proposed by the present invention has the following advantages:
[0020] 1. The present invention forms a first sealing structure and a second sealing structure through the protrusion and groove structure on the inner cover and the outer cover, and seals the packaging container while pressing the inner sleeve. The two-layer sealing structure ensures the sealing effect required by the oily paint, and prevents the inner sleeve from falling off to the inside of the container barrel, causing the oily paint to contact the container barrel and the inner cover, thereby affecting the subsequent reuse of the container barrel and the inner cover;
[0021] 2. The inner sleeve is compressed by using the inner and outer double covers, so as to avoid the problem that the conventional metal cover exerts excessive compression force on the inner sleeve which is generally set as a plastic bag, thereby causing damage to the inner sleeve;
[0022] 3. The inner cover and the outer cover are provided with paint extraction structures. When temporarily taking paint, the paint can be directly extracted from the inside of the container barrel through the support and the extraction tube, avoiding opening the inner cover and the outer cover to affect the overall sealing. After taking, the two sets of closed sliders are closed and sealed again to ensure the sealing effect of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the oily paint packaging container device of the present invention;
[0024] Figure 2 It is a partial cross-sectional structural schematic diagram of the oily paint packaging container device of the present invention;
[0025] Figure 3For the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle;
[0026] Figure 4 It is a front structural schematic diagram of the oily paint packaging container device of the present invention;
[0027] Figure 5 It is a schematic diagram of the structure of the outer cover and the fitting part of the present invention;
[0028] Figure 6 It is a front cross-sectional structural schematic diagram of the oily paint packaging container device of the present invention;
[0029] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure at B in the middle;
[0030] Figure 8 It is one of the structural schematic diagrams of the coating extraction structure in the present invention;
[0031] Fig. 9 This is the second structural schematic diagram of the coating extraction structure in the present invention.
[0032] In the figure:
[0033] 11. container barrel; 12. outer cover; 13. inner cover; 14. inner sleeve; 15. first connecting ring; 16. first stepped protrusion; 17. second stepped protrusion; 18. first groove; 19. second groove; 110. first pressing protrusion; 111. second pressing protrusion; 112. fitting part;
[0034] 21. Extraction port; 22. Mounting hole; 23. Second connecting ring; 24. Buckle ring; 25. Closed slider; 26. Support groove; 27. Support rod; 28. Support spring; 29. Sliding groove; 210. Support member; 211. Extraction tube. DETAILED DESCRIPTION
[0035] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Various examples may omit, replace, or add various processes or components as needed. In addition, the features described in some examples may also be combined in other examples.
[0036] The invention provides Figures 1 to 4 As shown, an oily paint packaging container device comprises:
[0037] A container barrel body 11 and an inner sleeve 14, wherein the inner sleeve 14 is arranged inside the container barrel body 11, and an inner cover 13 and an outer cover 12 are arranged on the top of the container barrel body 11, wherein the inner cover 13 presses and buckles the inner sleeve 14 on the barrel edge of the container barrel body 11, and the outer cover 12 buckles the outside of the inner cover 13, and the oily paint is stored inside the inner sleeve 14;
[0038] A first clamping protrusion 110 is provided on the top of the inner side wall of the container barrel body 11, and a second clamping protrusion 111 cooperating with the first clamping protrusion 110 is provided on the bottom of the inner cover 13, and the edge of the inner sleeve 14 is clamped between the first clamping protrusion 110 and the second clamping protrusion 111 to form a first sealing structure; a first step protrusion 16 is provided on the outer side of the barrel edge of the container barrel body 11, and a first groove 18 is provided on the outer ring of the inner cover 13, and a second step protrusion 17 cooperating with the first step protrusion 16 is provided on the inner side wall of the first groove 18, and the edge of the inner sleeve 14 is clamped between the first step protrusion 16 and the second step protrusion 17 to form a second sealing structure; the first sealing structure and the second sealing structure seal the packaging container while clamping the inner sleeve 14 to prevent the inner sleeve 14 from falling off into the container barrel body 11.
[0039] It should be noted that when the inner cover 13 is buckled onto the container barrel 11, the first clamping protrusion 110 on the top of the inner wall of the container barrel 11 cooperates with the second clamping protrusion 111 on the bottom of the inner cover 13 to tightly clamp the edge of the inner sleeve 14 in the middle, forming a first sealing structure. At the same time, the first stepped protrusion 16 on the outer side of the barrel of the container barrel 11 cooperates with the second stepped protrusion 17 on the inner wall of the first groove 18 on the outer circle of the inner cover 13 to again clamp the edge of the inner sleeve 14 in the middle, forming a second sealing structure. In the process of sealing the packaging container, these two sealing structures also apply pressure to the edge of the inner sleeve 14 sandwiched in the middle through the protrusions, which plays a role in compressing the inner sleeve 14 and preventing the inner sleeve 14 from falling off into the container barrel 11; the double cover body cooperates, and the outer cover 12 is buckled onto the outside of the inner cover 13, which further enhances the overall stability and sealing. The existence of the outer cover 12 can protect the inner cover 13 and the internal sealing structure, and reduce the influence of external factors on the sealing and clamping effects;
[0040] The double protection of the first sealing structure and the second sealing structure provides a reliable sealing environment for the oily paint, meets the high requirements of the oily paint for sealing, effectively prevents the volatilization, leakage and contact with external air, moisture and other substances of the oily paint, and ensures the quality and performance stability of the paint; prevents the inner sleeve 14 from falling off, and the two sealing structures effectively compress the inner sleeve 14 while achieving sealing, which can reliably prevent the inner sleeve 14 from falling off into the container barrel 11. It avoids the oily paint from contacting the container barrel 11 and the inner cover 13 due to the falling of the inner sleeve 14, thereby ensuring the subsequent reusability of the container barrel 11 and the inner cover 13, reducing resource waste and environmental pollution; the structural stability is strong, the cooperation between the inner cover 13 and the outer cover 12 and the design of each protrusion and groove structure make the structure of the entire packaging container device more stable. The protective effect of the outer cover 12 on the internal structure further enhances the reliability of the device during use and transportation, and reduces the risk of sealing failure or falling off of the inner sleeve 14 due to collision, vibration and other factors.
[0041] like Figure 3 and Figure 7 As shown, the inner cover 13 and the outer cover 12 are buckled at the edges through a groove structure to achieve better sealing. The outer edge of the outer cover 12 is provided with a second groove 19, which is buckled on the outer edge of the inner cover 13, and the second groove 19 is located above the first groove 18.
[0042] like Figure 5 and Figure 7 As shown, in addition to the snap-fitting force between the inner cover 13 and the outer cover 12, in order to obtain a stronger sealing effect, the outer cover 12 edge bottom is provided with a fitting portion 112 distributed in a ring array, and the fitting portion 112 is provided as a deformable metal sheet structure. After the fitting portion 112 is deformed and pressed tightly against the edge of the inner cover 13, it provides an inward pressing force for the second stepped protrusion 17, and at the same time provides a downward pressing force for the second pressing protrusion 111. Figure 3 As shown, the inner sleeve 14 is configured as a toughened plastic bag-like structure, and a first connecting ring 15 is provided at the bag-like edge of the inner sleeve 14. After the inner sleeve 14 is compressed by the first sealing structure and the second sealing structure, the first connecting ring 15 is located outside the container barrel 11. Specifically, the outer cover 12 is configured as a metal cover body with a deformable edge, and the inner cover 13 is configured as a plastic cover body with a deformable edge.
[0043] like Figure 6 and Figure 8As shown, due to the use of the multi-layer sealing structure of the inner cover 13 and the outer cover 12, in addition to using a whole barrel of paint, when temporary use is required and the sealing effect needs to be taken into account, the inner cover 13 and the outer cover 12 are provided with a paint extraction structure, and the paint extraction structure includes an extraction port 21 and an extraction tube 211. At least two groups of movable closed sliders 25 are provided inside the extraction port 21. In a normal state, the two groups of closed sliders 25 make the extraction port 21 in a closed state. When the extraction port 21 is in an open state, the extraction tube 211 can be inserted into the inner sleeve 14 of the container barrel 11 to extract oily paint.
[0044] like Figure 8 and Fig. 9 As shown, the outer cover 12 is provided with a mounting hole 22 for mounting the extraction port 21 , and the inner cover 13 is provided with a second connecting ring 23 . The extraction port 21 and the second connecting ring 23 are detachably sealed and butted against each other via a buckle ring 24 .
[0045] like Figure 8 As shown, regarding the specific activity mode and reset mode of the two groups of closed sliders 25, the two groups of closed sliders 25 are symmetrically arranged and slidably installed inside the extraction port 21, and the side of the extraction port 21 is provided with a sliding groove 29 for the sliding installation of the closed slider 25. The closed slider 25 is connected to a support rod 27, and the side of the extraction port 21 is provided with a socket for the support rod 27 to be inserted. A support spring 28 is sleeved on the support rod 27, and the support spring 28 is supported between the closed slider 25 and the inner wall of the extraction port 21. The inner top of the two groups of closed sliders 25 is provided with a support groove 26.
[0046] Specifically, the support groove 26 is configured as a stepped groove with an inclined surface, and the specific shape of the stepped groove is as follows: Figure 8 As shown, the outer sliding sleeve of the extraction tube 211 is provided with a support member 210. When the support member 210 is supported in the stepped groove, the two sets of closed sliders 25 are stretched open by the support member 210 so that there is a gap between them. The extraction tube 211 can be inserted into the gap to extract the paint. After the extraction is completed, the support member 210 is taken out and the two sets of closed sliders 25 are closed and sealed again. Furthermore, the bottom of the extraction tube 211 is provided with an extension end and the end is provided with a protective structure, so as to fully extract the paint in the inner sleeve 14 while preventing the extraction tube 211 from damaging the inner sleeve 14. The support member 210 is provided with a hand-held portion.
[0047] In summary, the present invention also has the following comprehensive effects: the sealing and pressing principle, the inner cover 13 and the outer cover 12 at the top of the container barrel body 11 cooperate with the barrel body to achieve sealing and pressing of the inner sleeve 14; the first pressing protrusion 110 at the top of the inner side wall of the container barrel body 11 cooperates with the second pressing protrusion 111 at the bottom of the inner cover 13 to sandwich the edge of the inner sleeve 14 to form a first sealing structure, and at the same time plays a role in pressing the inner sleeve 14 to prevent it from falling off; the first stepped protrusion 16 along the outer side of the container barrel body 11 cooperates with the outer ring of the inner cover 13 The second stepped protrusion 17 on the inner wall of the first groove 18 cooperates to sandwich the edge of the inner sleeve 14 in the middle to form a second sealing structure, which also helps to prevent the inner sleeve 14 from falling off; the deformable metal sheet-like fitting portion 112 at the bottom of the edge of the outer cover 12 is deformed and pressed tightly against the edge of the inner cover 13, providing an inward pressing force for the second stepped protrusion 17, and at the same time providing a downward pressing force for the second pressing protrusion 111, further enhancing the sealing and pressing effects; according to the paint extraction principle, a paint extraction structure is provided on the inner cover 13 and the outer cover 12. Under normal conditions, the two sets of closed sliders 25 in the extraction port 21 are in a closed state under the action of the support spring 28; when it is necessary to extract paint, the support member 210 slidably sleeved outside the extraction tube is inserted into the extraction port 21, and the support member 210 is supported in the stepped groove with an inclined surface at the top of the closed slider 25, and the two sets of closed sliders 25 are opened to form a gap between them, and the extraction tube can be inserted into the gap to extract paint; after the extraction is completed, the support member 210 is removed, and the two sets of closed sliders 25 are closed and sealed again under the action of the support spring 28. The bottom of the extraction tube has an extension end and a protective structure at the end to avoid damaging the inner sleeve 14.
[0048] The sealing and anti-falling effects are good. The two-layer sealing structure ensures the sealing effect required by the oily paint, prevents the oily paint from contacting the container barrel 11 and the inner cover 13, and avoids affecting the subsequent reuse of the container barrel 11 and the inner cover 13; effectively solves the problem of poor sealing effect and easy falling of the inner sleeve 14 in the prior art, which causes the oily paint to stick to the container; protects the inner sleeve 14, and uses the inner and outer double cover form to press the inner sleeve 14, so as to avoid the conventional metal cover body from generating excessive pressure on the plastic bag-shaped inner sleeve 14 and causing damage; facilitates the use of paint and ensures the sealing of the paint extraction structure. When temporarily taking the paint, there is no need to open the inner cover 13 and the outer cover 12 to avoid affecting the overall sealing. After taking, the closing slider 25 is closed and sealed again to ensure the sealing effect of the overall structure.
[0049] The above describes an embodiment of the present invention, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Under the guidance of this embodiment, ordinary technicians in this field can also make many forms, all of which are protected by this embodiment.
Claims
1. An oily paint packaging container device, characterized in that: include: A container barrel (11) and an inner sleeve (14), wherein the inner sleeve (14) is arranged inside the container barrel (11), and an inner cover (13) and an outer cover (12) are arranged on the top of the container barrel (11), wherein the inner cover (13) presses and snaps the inner sleeve (14) onto the barrel edge of the container barrel (11), and the outer cover (12) snaps onto the outside of the inner cover (13), and the oily paint is stored inside the inner sleeve (14); The top of the inner side wall of the container barrel (11) is provided with a first pressing protrusion (110), the bottom of the inner cover (13) is provided with a second pressing protrusion (111) cooperating with the first pressing protrusion (110), and the edge of the inner sleeve (14) is clamped between the first pressing protrusion (110) and the second pressing protrusion (111) to form a first sealing structure; the barrel edge of the container barrel (11) is provided with a first step protrusion (16) on the outer side, the outer ring of the inner cover (13) is provided with a first groove (18), the inner side wall of the first groove (18) is provided with a second step protrusion (17) cooperating with the first step protrusion (16), and the edge of the inner sleeve (14) is clamped between the first step protrusion (16) and the second step protrusion (17) to form a second sealing structure; the first sealing structure and the second sealing structure seal the packaging container while pressing the inner sleeve (14) to prevent the inner sleeve (14) from falling off into the container barrel (11); The outer edge of the outer cover (12) is provided with a second groove (19), the second groove (19) is buckled on the outer edge of the inner cover (13), and the second groove (19) is located above the first groove (18); the bottom of the edge of the outer cover (12) is provided with a fitting portion (112) distributed in a ring array, the fitting portion (112) is configured as a deformable metal sheet structure, and after the fitting portion (112) is deformed and pressed tightly against the edge of the inner cover (13), it provides an inward pressing force for the second stepped protrusion (17), and at the same time provides a downward pressing force for the second pressing protrusion (111); The inner sleeve (14) is configured as a toughened plastic bag-like structure, a first connecting ring (15) is provided on the bag-like edge of the inner sleeve (14), and after the inner sleeve (14) is compressed by the first sealing structure and the second sealing structure, the first connecting ring (15) is located outside the container barrel (11).
2. The oil-based paint packaging container device according to claim 1, characterized in that: The outer cover (12) is configured as a metal cover body with a deformable edge, and the inner cover (13) is configured as a plastic cover body with a deformable edge.
3. The oil-based paint packaging container device according to claim 1, characterized in that: The inner cover (13) and the outer cover (12) are provided with a paint extraction structure, the paint extraction structure comprising an extraction port (21) and an extraction tube (211), at least two groups of movable closed sliders (25) are provided inside the extraction port (21), the two groups of closed sliders (25) making the extraction port (21) in a closed state in a normal state, and the extraction tube (211) can be inserted into the inner sleeve (14) of the container barrel (11) to extract oily paint when the extraction port (21) is in an open state.
4. The oil-based paint packaging container device according to claim 3, characterized in that: The outer cover (12) is provided with a mounting hole (22) for mounting the extraction port (21), and the inner cover (13) is provided with a second connecting ring (23), and the extraction port (21) and the second connecting ring (23) are detachably sealed butted against each other via a buckle ring (24).
5. The oil-based paint packaging container device according to claim 3, characterized in that: Two groups of closed sliders (25) are symmetrically arranged and slidably mounted inside the extraction port (21); a support rod (27) is connected to the closed slider (25); a plug hole for plugging the support rod (27) is provided on the side of the extraction port (21); a support spring (28) is sleeved on the support rod (27); the support spring (28) is supported between the closed slider (25) and the inner side wall of the extraction port (21); and a support groove (26) is provided on the inner top of the two groups of closed sliders (25).
6. The oil-based paint packaging container device according to claim 5, characterized in that: The support groove (26) is configured as a stepped groove with an inclined surface. The outer sliding sleeve of the extraction tube (211) is provided with a support member (210). When the support member (210) is supported in the stepped groove, the two sets of closed sliding blocks (25) are stretched apart by the support member (210) so that a gap exists between the two sets. The extraction tube (211) can be inserted into the gap to extract the paint. After the extraction is completed, the support member (210) is removed and the two sets of closed sliding blocks (25) are closed and sealed again.
7. The oil-based paint packaging container device according to claim 6, characterized in that: The bottom of the extraction tube (211) is provided with an extension end and the end is provided with a protective structure, so as to achieve full extraction of the paint in the inner sleeve (14) while preventing the extraction tube (211) from damaging the inner sleeve (14), and the support member (210) is provided with a hand-held portion.
Citation Information
Patent Citations
Oil paint packaging container inner sleeve
CN110525782A
Tightening strap for metal barrel and barrel provided with the strap
EP0518844A1