Plastic bucket
By setting a surrounding support ring and a symmetrical recessed protrusion structure on the top edge of the plastic bucket, the problem of bucket mouth deformation is solved, the roundness and sealing of the bucket mouth are improved, and the effective engagement of the cap and the hole pipe is ensured.
Patent Information
- Application Number
- CN202520541805.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-03-26
AI Technical Summary
During the blow molding process of industrial plastic buckets, insufficient stretching in the bucket opening area leads to significant differences in material thickness and uneven cooling and shrinkage, resulting in bucket opening deformation and thread engagement failure.
A surrounding support ring is provided on the top edge of the plastic bucket, and first and second recessed areas are symmetrically formed near the support ring. First and second holes and hole connecting pipes are provided respectively, and a protrusion is provided between the hole and the support ring. The length of the protrusion is greater than or equal to 1.1-1.5 times the diameter of the hole, and the cross-section is arched to reduce the deformation of the bucket mouth.
It improves the roundness and sealing of the barrel opening, enhances the threaded engagement and sealing of the cap and the connecting pipe, and is suitable for industrial plastic barrels with a capacity of 200 liters.
Smart Images
Figure CN223812821U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the field of industrial plastic containers, and in particular to a plastic drum made of plastic material. BACKGROUND
[0002] The background description provided herein is for the purpose of generally presenting the context of the application. The subject matter of the following claims is not limited to embodiments that solve any disadvantages of a known art.
[0003] The shape of the mouth of an industrial plastic drum (e.g. a filling port, a vent port) is important for its engagement with a closure. However, during the manufacturing process of an industrial plastic drum, the mouth region, which is located at the line of joint of the mold, is not stretched enough during the blow molding process, the thickness of the accumulated material varies significantly, and the uneven cooling shrinkage results in deformation of the mouth, such as large ovality deviation, which eventually leads to the failure of the thread engagement due to the deformation of the mouth after the cooling molding.
[0004] Therefore, there is a need in the art for an improved plastic drum with improved mouth shape. SUMMARY
[0005] This section provides a simplified introduction to the selection of inventive concepts, which will be further embodied in the following detailed description. This section does not intend to identify key or essential features of the claimed subject matter, nor is it intended to be used in determining the scope of the claimed subject matter.
[0006] To address at least one of the problems existing in the prior art, the present application provides a plastic drum having a top surface and first and second recessed regions formed symmetrically about the center of the top surface adjacent to the edge of the top surface, the plastic drum being provided with a support ring around the top surface along the edge, wherein the first recessed region is provided with a first hole and a first hole adapter extending from the first hole, and the second recessed region is provided with a second hole and a second hole adapter extending from the second hole, wherein first and second protrusions are respectively provided between the first and second holes and the support ring adjacent thereto, wherein the length direction of the first and second protrusions is substantially perpendicular to the center line direction of the first and second holes, and wherein the length of the first and second protrusions is greater than or equal to the diameter of the first and second holes.
[0007] In some embodiments, the length of the first protrusion is between 1.1-1.5 times the diameter of the first hole, and the length of the second protrusion is between 1.1-1.5 times the diameter of the second hole.
[0008] In some embodiments, the cross section of the first and second protrusions is arched.
[0009] In some embodiments, the height of the first and second hole adapters does not exceed the height of the support ring.
[0010] In certain embodiments, a recess is provided on the bottom surface of the plastic bucket.
[0011] In certain embodiments, the plastic bucket has a volume on the order of 200 liters.
[0012] In certain embodiments, first and second protrusions are provided on the support ring proximate the first and second protrusions, respectively, and the length of the first and second protrusions is less than the length of the corresponding first and second protrusions.
[0013] In certain embodiments, no protrusions are provided on the support ring. BRIEF DESCRIPTION OF DRAWINGS
[0014] Other or additional features, advantages, and characteristics of the embodiments are presented in the following detailed description and in the appended claims. In the drawings:
[0015] Figure 1 a perspective view of a plastic bucket according to the principles of the present application is schematically illustrated;
[0016] Figure 2 a partial view of a plastic bucket according to the principles of the present application is schematically illustrated;
[0017] Figure 3 a partial cross-sectional view of a plastic bucket according to the principles of the present application is schematically illustrated;
[0018] Figure 4 a bottom view of a plastic bucket according to the principles of the present application is schematically illustrated; and
[0019] Figure 5 a partial view of another embodiment of a plastic bucket according to the principles of the present application is schematically illustrated. DETAILED DESCRIPTION
[0020] The following description is merely exemplary in nature and is not intended to limit the present application, application, or uses. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description. It should be appreciated that the detailed description set forth below in connection with the appended drawings describes exemplary aspects merely for purposes of illustration and that the application is not limited to such aspects, but is rather capable of considerable modification and variation.
[0021] The present application will now be further described. In the following passages, different aspects of the present application are defined in more detail. Each aspect so defined can be combined with any other aspect or aspects unless clearly indicated to the contrary. In particular, any feature indicated as being preferred or advantageous can be substituted by any other feature or features indicated as being preferred or advantageous.
[0022] To solve at least one of the problems of the prior art, the present application provides an improved plastic bucket. Reference is made to the attached drawings for a more detailed understanding of the present application. Figure 1and the accompanying drawings, which are incorporated herein by reference, wherein: Figure 2 A plastic bucket 100 according to the principles of the present application is schematically shown. The plastic bucket 100 has a top surface 10 and a bottom surface 18, advantageously both of which are circular in shape. The plastic bucket is provided with a support ring 14 around the top surface 10 along the edge 12 of the top surface 10. On the top surface 10 of the plastic bucket 100, proximate to the top surface edge 12 and preferably symmetric about the center of the top surface, are formed a first recessed area 20 and a second recessed area 22, wherein the first recessed area 20 is provided with a first hole 60 and a first hole adapter 30 extending from the first hole 60, and the second recessed area 22 is provided with a second hole 62 and a second hole adapter 32 extending from the second hole 62. As would be readily understood by those skilled in the art, the first hole 60 and the second hole 62 can be closed by a cover (not shown) attached (e.g., screwed) to the first hole adapter 30 and the second hole adapter 32, respectively. According to the principles of the present application, a first protrusion 40 is provided between the first hole 60 and the top surface edge 12 immediately adjacent thereto; advantageously, the length of the first protrusion 40 is substantially perpendicular to the direction of the center line connecting the first hole 60 and the second hole 62. More advantageously, the first protrusion 40 is substantially symmetric about the center line connecting the first hole 60 and the second hole 62. Similarly, a second protrusion 42 is provided between the second hole 62 and the top surface edge 12 immediately adjacent thereto. Advantageously, the length of the second protrusion 42 is substantially perpendicular to the direction of the center line connecting the first hole 60 and the second hole 62. More advantageously, the second protrusion 42 is substantially symmetric about the center line connecting the first hole 60 and the second hole 62.
[0023] The inventors of the present application have found that the provision of the first protrusion 40 and the second protrusion 42 can improve the deformation of the mouth of the plastic bucket (the first hole and the second hole), and thus improve the tightness of the thread engagement between the cover and the hole adapter. The inventors of the present application have further found that the deformation of the mouth of the plastic bucket (the first hole and the second hole) can be significantly improved when the length of the first protrusion 40 and the second protrusion 42 is greater than or equal to the diameter of the first hole 60 and the second hole 62, and the deformation of the mouth of the plastic bucket (the first hole and the second hole) can be further reduced, and the roundness of the mouth can be improved, when the length of the first protrusion 40 and the second protrusion 42 is in the range of 1.1-1.5 times the diameter of the first hole 60 and the second hole 62.
[0024] Referring to Figure 3 A partial cross-sectional view of a plastic bucket 100 according to the principles of the present application is shown. As shown in circle A in Figure 3 The cross-section of the first protrusion 40 is substantially arcuate, as shown in circle A in
[0025] Referring back to Figure 1 and Figure 2The height of the first hole adapter 30 and the second hole adapter 32 is not more than the height of the support ring 14. In other words, the first hole adapter 30 and the second hole adapter 32 are flush with the support ring 14 at most, which facilitates the stacking and piling of the plastic bucket, as will be readily appreciated by those skilled in the art.
[0026] Referring back to Figure 1 and referring to Figure 4 In the second recessed area 22, an arrow mark can be provided to mark the injection hole, while on the bottom surface 18 of the plastic bucket 100, a recess or a handgrip 48 can be provided at a diagonal position with respect to the arrow mark to facilitate the operator to hold the plastic bucket when pouring out the content so as to empty the content as much as possible.
[0027] The plastic bucket 100 according to the principles of the present application is particularly suitable for industrial plastic buckets with a volume of the order of 200 liters or 120 liters.
[0028] In addition, a first protrusion 50 and a second protrusion 52 can be provided on the support ring 14 near the first protrusion 40 and the second protrusion 42 respectively to reduce stress concentration. However, in order to achieve better results, the inventors of the present application have found that the length of the first protrusion 50 and the second protrusion 52 should be less than the length of the corresponding first protrusion 40 and the second protrusion 42, for example, not more than two-thirds of the length of the first protrusion 40 and the second protrusion 42. Of course, no protrusion can be provided on the support ring 14.
[0029] According to the plastic bucket according to the principles of the present application, by providing the protrusion structure, the deformation of the bucket opening caused by the too large difference in the thickness of the accumulated material can be avoided, and the circularity of the bucket opening can be improved so as to improve the sealing of the bucket opening.
[0030] While at least one exemplary embodiment has been described above, it should be appreciated that many modifications can be made. It should also be appreciated that the exemplary embodiment or embodiments described herein are only examples and are not intended to limit the scope, applicability, or configuration of the application in any way. Rather, the foregoing detailed description will provide those skilled in the art with a convenient road map for implementing an exemplary embodiment or embodiments. It should be understood that various changes can be made in the function and arrangement of elements without departing from the scope of the application as set forth in the appended claims and their equivalents.
Claims
1. A plastic bucket (100) having a top surface (10) and a first recess area (20) and a second recess area (22) formed symmetrically about the center of the top surface adjacent an edge (12) of the top surface, the plastic bucket being provided with a support ring (14) around the top surface (10) along the edge (12), wherein, The first recess area (20) is provided with a first hole (60) and a first hole connector (30) extending from the first hole (60), and the second recess area (22) is provided with a second hole (62) and a second hole connector (32) extending from the second hole (62), characterized in that a first protrusion (40) and a second protrusion (42) are respectively arranged between the first hole (60) and the second hole (62) and the support ring (14) adjacent thereto, wherein the length direction of the first protrusion (40) and the second protrusion (42) is substantially perpendicular to the center line direction of the first hole (60) and the second hole (62), and wherein the length of the first protrusion (40) and the second protrusion (42) is greater than or equal to the diameter of the first hole (60) and the second hole (62).
2. The plastic pail (100) of claim 1, wherein, The length of the first protrusion (40) is between 1.1-1.5 times the diameter of the first hole (60), and the length of the second protrusion (42) is between 1.1-1.5 times the diameter of the second hole (62).
3. The plastic pail (100) of claim 2, wherein, The cross section of the first protrusion (40) and the second protrusion (42) is arc-shaped.
4. The plastic pail (100) of claim 3, wherein, The height of the first hole connector (30) and the second hole connector (32) does not exceed the height of the support ring (14).
5. The plastic pail (100) of claim 4, wherein, A recess (48) is arranged on the bottom surface (18) of the plastic bucket.
6. The plastic pail (100) of claim 5, wherein, The volume of the plastic bucket (100) reaches the order of magnitude of 200 liters.
7. The plastic pail (100) according to any one of claims 1 to 6, characterized in that First and second protrusions (50) and (52) are respectively arranged on the support ring (14) near the first and second protrusions (40) and (42), and the length of the first and second protrusions (50) and (52) is less than the length of the corresponding first and second protrusions (40) and (42).
8. The plastic pail (100) according to any one of claims 1 to 6, characterized in that No protrusion is arranged on the support ring (14).