CN110899547A - Method for manufacturing safe pop can cover - Google Patents
Method for manufacturing safe pop can cover Download PDFInfo
- Publication number
- CN110899547A CN110899547A CN201811086991.4A CN201811086991A CN110899547A CN 110899547 A CN110899547 A CN 110899547A CN 201811086991 A CN201811086991 A CN 201811086991A CN 110899547 A CN110899547 A CN 110899547A
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- CN
- China
- Prior art keywords
- shoulder
- bottom wall
- axis
- intersecting
- ring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
- B21D51/44—Making closures, e.g. caps
- B21D51/443—Making closures, e.g. caps easily removable closures, e.g. by means of tear strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
Abstract
A method for manufacturing a safe pop can cover comprises the steps of firstly preparing a cover blank and a pull ring, wherein the cover blank is provided with a bottom wall, a peripheral wall and a flange, the peripheral wall is provided with a first ring part, a first shoulder part, a second ring part, a second shoulder part and a third ring part, the pull ring is provided with a riveting hole and a pull hole, then pre-bending, cutting, rust-proof treatment, flattening, raising and shaping are carried out on the cover blank, a cover body can be manufactured, the pull ring is riveted on the cover body, the pop can cover can be manufactured, and the effect of rust-proof treatment is utilized, so that a better rust-proof effect can be generated at the cutting line of the pop can cover.
Description
Technical Field
The invention relates to a metal can cover, in particular to a method for manufacturing a safe pop can cover.
Background
A conventional security pop-top can lid (taiwan patent No. M557236) includes a rivet portion, a sealing plate portion, a cutting groove, and a pull ring member. This riveting portion is the ring form, and has an interior border, this closure plate portion can tear and leave and connect in this riveting portion inside, and have one and connect in the outer peripheral edge of this interior border, a cross-section is the shape of falling U and connects in the position of buckling of this outer peripheral edge, and a cross-section is the shape of falling U and connect in this position of buckling and locate the ring edge position of this outer peripheral edge one side, this cut-off groove forms between the interior border of this riveting portion and the internal perisporium of this closure plate portion and can be disconnected, this pull ring spare has a riveting portion of riveting in this closure plate portion, a portion of wrenching that sets up in this riveting portion one side, and a portion of wrenching opposite to this portion of wrenching and set up in the portion of cutting off of this riveting portion opposite side.
When the pulling part is pulled, the cutting groove can cut off the cutting groove, and the sealing plate part can be torn away from the riveting part.
After the pop can cover is torn away from the riveting part on the sealing plate part, the sealing plate part can achieve the purpose of preventing cutting injury by utilizing the ring edge part.
However, the cut groove is easily rusted by the intrusion of air or moisture, and the appearance of the can is deteriorated.
Disclosure of Invention
The invention aims to provide a method for manufacturing a safe pop can cover capable of generating a better rust prevention effect.
The invention relates to a method for manufacturing a safety pop can cover, which comprises the following steps: (A) preparing a disk-shaped cover blank having a bottom wall intersecting an axis, a peripheral wall surrounding the axis and intersecting and connecting to a peripheral edge of the bottom wall, and a flange connecting to the peripheral wall, the peripheral wall and the bottom wall defining together a recessed space opened in one direction, the peripheral wall being stepped so as to gradually expand outward as it extends from the bottom wall toward the flange, the peripheral wall having a first ring portion intersecting and connecting to the bottom wall, a first shoulder portion intersecting and connecting to the first ring portion, a second ring portion intersecting and connecting to the first shoulder portion, a second shoulder portion intersecting and connecting to the second ring portion, and a third ring portion intersecting and connecting between the second shoulder portion and the flange, (B) performing a cutting operation to punch the first shoulder portion to form a cut line around the axis, (C) performing an antirust treatment to coat the cut line on the cover blank with an antirust material, (D) and bending to ensure that the second shoulder is superposed towards the first shoulder along the axis, the second annular wall is clamped between the second shoulder and the first shoulder, the first shoulder is superposed towards the bottom wall along the axis, and the first annular wall is clamped between the first shoulder and the bottom wall.
The invention relates to a method for manufacturing a safety pop can cover, which comprises the following steps: (A) preparing a disk-shaped cover blank, wherein the cover blank is provided with a bottom wall intersecting with an axis, a peripheral wall surrounding the axis and intersecting with the periphery of the bottom wall, and a flange connected with the peripheral wall, the peripheral wall and the bottom wall jointly define a concave space with one-way opening, the peripheral wall is in a step shape gradually expanding outwards when extending from the bottom wall to the flange, the peripheral wall is provided with a first ring part intersecting with the bottom wall, a first shoulder part intersecting with the first ring part, a second ring part intersecting with the first shoulder part, a second shoulder part intersecting with the second ring part, and a third ring part intersecting with the second shoulder part and the flange, (B) performing a tangent line operation, punching the first shoulder part to form a tangent line surrounding the axis, (C) performing a bending operation and an antirust treatment, the bending operation comprises an outer bending action of enabling the second shoulder to be overlapped towards the first shoulder along the axis, and enabling the second annular wall to be clamped between the second shoulder and the first shoulder, and an inner bending action of enabling the first shoulder to be overlapped towards the bottom wall along the axis, and enabling the first annular wall to be clamped between the first shoulder and the bottom wall, the antirust treatment is used for coating antirust materials on the cover blank with the tangent completed, and the antirust treatment is performed between the outer bending action and the inner bending action.
In the method for manufacturing the safe zip-top can cover, the bending operation in the step (C) is to perform the inner bending action at first and then perform the outer bending action.
The invention relates to a method for manufacturing a safety pop can cover, which comprises the following steps: (A) preparing a disk-shaped cap blank and a pull ring, wherein the cap blank is provided with a bottom wall intersecting with an axis, a peripheral wall surrounding the axis and intersecting with the periphery of the bottom wall, and a flange connected with the peripheral wall, the peripheral wall and the bottom wall jointly define a recess space with one-way opening, the peripheral wall is in a step shape gradually expanding outwards when extending from the bottom wall to the flange, the peripheral wall is provided with a first ring part intersecting with the bottom wall, a first shoulder part intersecting with the first ring part, a second ring part intersecting with the first shoulder part, a second shoulder part intersecting with the second ring part, and a third ring part intersecting with the second shoulder part and the flange, the pull ring is provided with a riveting hole and a pull hole arranged at one side of the riveting hole, (B) pre-bending is carried out, so that the distance between the first shoulder part and the second shoulder part corresponding to the axis is reduced, the first ring part and the second ring part are obliquely deformed relative to the axis, (C) a tangent line operation is performed to punch the first shoulder part to form a tangent line around the axis, (D) an antirust treatment is performed to coat an antirust material on the blank of the cap with the tangent line completed, (E) a flattening and raising operation is performed to overlap the second shoulder part along the axis toward the first shoulder part, the second ring wall is clamped between the second shoulder part and the first shoulder part, and the bottom wall is punched to form a convex part protruding toward the concave space, (F) a shaping operation is performed to increase the height of the convex part corresponding to the axis, reduce the circular diameter perpendicular to the axis, overlap the first shoulder part along the axis toward the bottom wall, the first ring wall is clamped between the first shoulder part and the bottom wall, and a plurality of reinforcing rings which are annular around the axis are formed on the bottom wall, and (G) performing pull ring riveting operation, sleeving a riveting hole of the pull ring on the convex part, and riveting the tail end of the convex part.
The method for manufacturing the safe pop can cover further comprises a step (H) after the step (G), wherein the step (H) is used for performing trimming and chamfering operations on the pull ring.
In the method for manufacturing the safe pop can cover, the step (E) is also used for typing the bottom wall.
According to the manufacturing method of the safe pop can cover, stamping equipment is further prepared in the step (A), and the stamping equipment is provided with a bending stamping unit capable of being matched with the step (B) to perform pre-bending, a line cutting unit capable of being matched with the step (C) to perform line cutting operation, a flattening and embossing unit capable of being matched with the step (E) to perform flattening and embossing operation, a first shaping unit capable of being matched with the step (F) to perform shaping operation, and a pull ring riveting unit capable of being matched with the step (G) to perform pull ring riveting operation.
The method for manufacturing the safe pop can cover comprises the step (A) and stamping equipment, wherein the stamping equipment is provided with a bending stamping unit which can be matched with the step (B) to perform pre-bending, a line cutting unit which can be matched with the step (C) to perform line cutting operation, a flattening and embossing unit which can be matched with the step (E) to perform flattening and embossing operation, a first shaping unit which can be matched with the step (F) to perform shaping operation, a pull ring riveting unit which can be matched with the step (G) to perform pull ring riveting operation, and a trimming and chamfering unit which can be matched with the step (H) to perform trimming and chamfering operation.
The invention has the beneficial effects that: by performing rust prevention before flattening, raising and shaping, a better rust prevention effect can be ensured at the tangent, and the complete appearance of the pop can is improved.
Drawings
Fig. 1 is a schematic manufacturing flow diagram of a first embodiment of the method for manufacturing a security can lid of the present invention;
FIG. 2 is a cross-sectional view of a lid blank of the first embodiment;
FIG. 3 is a schematic view of a pre-bending operation of the first embodiment;
FIG. 4 is a schematic view of a line cutting operation of the first embodiment;
FIG. 5 is a schematic view of a rust inhibitive treatment of the first embodiment;
FIG. 6 is a schematic illustration of a flattening, embossing, and typing operation of the first embodiment;
FIG. 7 is a schematic illustration of the shaping and flattening operation of the first embodiment;
FIG. 8 is a schematic view of a convex shaping and stiffening ring shaping of the first embodiment;
FIG. 9 is a schematic view of a tab and body rivet of the first embodiment;
FIG. 10 is a schematic view of the trim chamfer of a tab of the first embodiment;
fig. 11 is a schematic manufacturing flow diagram of a second embodiment of the method for manufacturing the lid of the security pop can of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1, a first embodiment of the method for manufacturing a security pop can lid of the present invention comprises the steps of:
firstly, preparing a disk-shaped cover blank 10, a pull ring 20, and a stamping device 30 (see fig. 3 to 9) and referring to fig. 2, the cover blank 10 has a bottom wall 11 intersecting with an axis L substantially perpendicularly, a peripheral wall 12 surrounding the axis L and intersecting with the periphery of the bottom wall 11, and a flange 13 connected to the peripheral wall 12, the peripheral wall 12 and the bottom wall 11 together define a recessed space 14 with one-way opening, the peripheral wall 12 is in a step shape gradually expanding outwards when extending from the bottom wall 11 to the flange 13, the peripheral wall 12 has a first ring portion 121 intersecting with the bottom wall 11 substantially perpendicularly, a first shoulder portion 122 intersecting with the first ring portion 121 substantially perpendicularly, a second ring portion 123 intersecting with the first shoulder portion 122, and a second shoulder portion 124 intersecting with the second ring portion 123, and a third ring portion 125 intersecting and connected between the second shoulder portion 124 and the flange 13, the second ring portion 123 having a larger diameter than the first ring portion 121, the third ring portion 125 having a larger diameter than the second ring portion 123, the first shoulder portion 122 and the second shoulder portion 124 being substantially parallel to the bottom wall 11. As shown in fig. 1, the tab 20 has a rivet hole 21 and a tab hole 22 disposed at one side of the rivet hole 21. The punching apparatus 30 has a bending punching unit 31 (see fig. 3) and a line-cutting unit 32 (see fig. 4) downstream of the bending punching unit 31, a flattening and embossing unit 33 (see fig. 6) downstream of the line-cutting unit 32, a first shaping unit 34 (see fig. 7) downstream of the flattening and embossing unit 33, a second shaping unit 35 (see fig. 8) downstream of the first shaping unit 34, a tab riveting unit 36 (see fig. 9) downstream of the second shaping unit 35, and a trimming and chamfering unit 37 (see fig. 10) downstream of the tab riveting unit 36.
Step two, with reference to fig. 3, a pre-bending operation is performed, and by using a pre-forming punch 311 of the bending and pressing unit 31, which is in a stepped column shape, and a pre-forming die 312 corresponding to the pre-forming punch 311, a distance between the first shoulder 122 and the second shoulder 124 corresponding to the axis L can be reduced, the first ring part 121 and the second ring part 123 are deformed in an inclined manner with respect to the axis L, and the peripheral wall 12 is in a double-folded Z shape.
Step three, referring to fig. 4, a tangent line 122 'can be formed by punching the first shoulder 122 to form a circular tangent line 122' around the axis L by using a tangent line die head 321 of the tangent line unit 32 and a seat 322 corresponding to the tangent line die head 321.
Step four, referring to fig. 5, performing an anti-rust treatment, and coating an anti-rust material 1 (the anti-rust material of the embodiment adopts a type PPG6100 polyester paint) on the cover blank 10 with the cut line 122 'completed, so that the anti-rust material 1 is fixedly covered on the first shoulder 122, and completely covers the cut line 122'.
Step five, with reference to fig. 6, performing flattening and convex forming, by using an upper punch 331 of the flattening and convex forming unit 33 to cooperate with a lower die 332, so that the second shoulder 124 is overlapped toward the first shoulder 122 along the axis L, and the second annular wall 123 is clamped between the second shoulder 124 and the first shoulder 122, the second annular wall 123 and the second shoulder 124 form a U-shaped curved shape, the second annular wall 123 and the first shoulder 122 also form a reverse U-shaped curved shape, and an outward bending operation is completed. And the bottom wall 11 is stamped to form a convex portion 111 which is convex toward the concave space 14 and has a disk shape. At the same time, a typing operation (not shown) can be performed on the bottom wall 11 by an upper punch 331 of the platen-embossing unit 33 and a lower die 332.
Sixthly, performing a shaping operation, referring to fig. 7, by using a first shaping punch 341 of the first shaping unit 34 to cooperate with a first shaping die 342, so that the height of the protrusion 111 corresponding to the axis L is increased, the diameter of the circle perpendicular to the axis L is decreased, the first shoulder 122 is overlapped towards the bottom wall 11 along the axis L, and the first annular wall 121 is clamped between the first shoulder 122 and the bottom wall 11 and performs an inward bending operation. Referring to fig. 8, a lid body 10' can be obtained by forming a plurality of reinforcing rings 112 annular around the axis L on the bottom wall 11 by engaging a second shaping punch 351 of the second shaping unit 35 with a second shaping die 352.
Seventhly, with reference to fig. 9, a tab riveting operation is performed, a riveting punch 361 of the tab riveting unit 36 is engaged with a riveting die 362, so that the protrusion 111 is sleeved with the riveting hole 21 of the tab 20, and the end of the protrusion 111 is riveted by the riveting punch 361, so that the tab 20 is riveted on the deformed protrusion 111.
And step eight, performing trimming and chamfering operation by matching with the drawing in fig. 10, and performing trimming and chamfering operation on the inner periphery of the pull hole 22 of the pull ring 20 by matching a trimming punch 371 and a trimming die 372 of the trimming and chamfering unit 37.
Therefore, as shown in fig. 1, the first embodiment of the method for manufacturing a safety pop can lid according to the present invention utilizes the above-mentioned continuous steps and the cooperation of the punching device 30 to sequentially perform the pre-bending operation, the line cutting operation, the rust prevention treatment, the flattening and raising operation, and the shaping operation on the disc-shaped lid blank 10, and after the lid body 10 'is manufactured, the tab riveting operation, the trimming and chamfering operation are performed on the lid body 10' and the tab 20, so that a safety pop can lid 100 can be completed, and the manufacturing steps are simple.
Furthermore, the first embodiment of the method for manufacturing a safety pop can lid of the present invention utilizes the rust-proof treatment before the operations of flattening, raising and shaping are performed, so as to ensure that a better rust-proof effect is generated at the tangent line 122', and improve the appearance integrity of the pop can lid.
It should be noted that the primary objective of the first embodiment of the present invention is to perform an anti-rust treatment on the cut line 122' before performing the flattening and embossing operation and the shaping operation. As shown in fig. 11, a second embodiment of the method for manufacturing a security pop can lid of the present invention is substantially the same as the first to third steps (i.e., fig. 11, action a to action c) of the first embodiment, and the second, seventh and eighth steps (not shown in fig. 11, see fig. 8 to 10 of the first embodiment), except that the anti-rust treatment is performed in the process of performing the folding operation. The bending operation is divided into an inner bending action [ action (d) of fig. 11 ] and an outer bending action [ action (f) of fig. 11 ], and the rust-preventive treatment is applied [ action (e) of fig. 11 ] between said outer bending action and said inner bending action. That is, the first shoulder 122 is overlapped toward the bottom wall 11 along the axis L, and the first annular wall 121 is clamped between the first shoulder 122 and the bottom wall 11, then the operation of coating the anti-rust material 1 on the first shoulder 122 is performed, and then the operation of clamping the second annular wall 123 between the second shoulder 124 and the first shoulder 122 is performed, so as to achieve the same purpose and effect as the first embodiment.
Claims (8)
1. A method for manufacturing a safety pop can cover is characterized by comprising the following steps:
(A) preparing a disc-shaped cover blank, wherein the cover blank is provided with a bottom wall intersecting with an axis, a peripheral wall surrounding the axis and intersecting and connecting with the periphery of the bottom wall, and a flange connected with the peripheral wall, the peripheral wall and the bottom wall jointly define a concave space with one-way opening, the peripheral wall is in a step shape gradually expanding outwards when extending from the bottom wall to the flange, and the peripheral wall is provided with a first ring part intersecting and connecting with the bottom wall, a first shoulder part intersecting and connecting with the first ring part, a second ring part intersecting and connecting with the first shoulder part, a second shoulder part intersecting and connecting with the second ring part, and a third ring part intersecting and connecting between the second shoulder part and the flange;
(B) performing a tangent operation, and punching the first shoulder to form a tangent line around the axis;
(C) performing rust prevention treatment, and coating a rust prevention material on the cut cover blank;
(D) and bending to ensure that the second shoulder is superposed towards the first shoulder along the axis, the second annular wall is clamped between the second shoulder and the first shoulder, the first shoulder is superposed towards the bottom wall along the axis, and the first annular wall is clamped between the first shoulder and the bottom wall.
2. A method for manufacturing a safety pop can cover is characterized by comprising the following steps:
(A) preparing a disc-shaped cover blank, wherein the cover blank is provided with a bottom wall intersecting with an axis, a peripheral wall surrounding the axis and intersecting and connecting with the periphery of the bottom wall, and a flange connected with the peripheral wall, the peripheral wall and the bottom wall jointly define a concave space with one-way opening, the peripheral wall is in a step shape gradually expanding outwards when extending from the bottom wall to the flange, and the peripheral wall is provided with a first ring part intersecting and connecting with the bottom wall, a first shoulder part intersecting and connecting with the first ring part, a second ring part intersecting and connecting with the first shoulder part, a second shoulder part intersecting and connecting with the second ring part, and a third ring part intersecting and connecting between the second shoulder part and the flange;
(B) performing a tangent operation, and punching the first shoulder to form a tangent line around the axis;
(C) and performing bending operation and rust prevention treatment, wherein the bending operation comprises an outer bending action of enabling the second shoulder to be overlapped towards the first shoulder along the axis, and enabling the second annular wall to be clamped between the second shoulder and the first shoulder, and an outer bending action of enabling the first shoulder to be overlapped towards the bottom wall along the axis, and enabling the first annular wall to be clamped between the first shoulder and the bottom wall, the rust prevention treatment is used for coating a rust prevention material on the cap blank with the cut line, and the rust prevention treatment is performed between the outer bending action and the inner bending action.
3. A method of manufacturing a security can end of a pop can as claimed in claim 2, wherein: and (C) bending operation is to perform the inner bending action first and then perform the outer bending action.
4. A method for manufacturing a safety pop can cover is characterized by comprising the following steps:
(A) preparing a disk-shaped cover blank and a pull ring, wherein the cover blank is provided with a bottom wall intersecting with an axis, a peripheral wall surrounding the axis and intersecting with the periphery of the bottom wall, and a flange connected with the peripheral wall, the peripheral wall and the bottom wall jointly define a recess space with one-way opening, the peripheral wall is in a step shape gradually expanding outwards when extending from the bottom wall to the flange, the peripheral wall is provided with a first ring part intersecting with the bottom wall, a first shoulder part intersecting with the first ring part, a second ring part intersecting with the first shoulder part, a second shoulder part intersecting with the second ring part, and a third ring part intersecting with the second shoulder part and the flange, and the pull ring is provided with a riveting hole and a pull hole arranged on one side of the riveting hole;
(B) pre-bending is carried out, so that the distance between the first shoulder part and the second shoulder part corresponding to the axis is reduced, and the first ring part and the second ring part are obliquely deformed relative to the axis;
(C) performing a tangent operation, and punching the first shoulder to form a tangent line around the axis;
(D) performing rust prevention treatment, and coating a rust prevention material on the cut cover blank;
(E) flattening and raising are carried out, so that the second shoulder portion is overlapped towards the first shoulder portion along the axis, the second annular wall is clamped between the second shoulder portion and the first shoulder portion, and the bottom wall is stamped to form a convex portion protruding towards the concave space;
(F) shaping to increase the height of the convex part corresponding to the axis, reduce the diameter of the circle perpendicular to the axis, and overlap the first shoulder part towards the bottom wall along the axis, wherein the first annular wall is clamped between the first shoulder part and the bottom wall, and a plurality of annular reinforcing rings are formed on the bottom wall around the axis, so that the cover body can be manufactured;
(G) and riveting the pull ring, sleeving the riveting hole of the pull ring on the convex part, and riveting the tail end of the convex part.
5. A method of manufacturing a security can end of a pop can as claimed in claim 4, wherein: and (H) after the step (G), performing trimming and chamfering operation on the pull ring.
6. A method of manufacturing a security can end of a pop can as claimed in claim 4, wherein: said step (E) further performing typing activity on said bottom wall.
7. A method of manufacturing a security can end of a pop can as claimed in claim 4, wherein: step (A) has still prepared stamping equipment, stamping equipment has can cooperate step (B) to carry out the punching press unit of bending in advance of buckling, can cooperate step (C) to carry out the tangent line unit of tangent line operation, can cooperate step (E) to carry out flattening of flattening and beating protruding operation and beat protruding unit, can cooperate step (F) to carry out the first plastic unit of plastic operation to and can cooperate step (G) to carry out the pull ring riveting unit of pull ring riveting operation.
8. A method of manufacturing a security can end of a pop can as claimed in claim 5, wherein: step (A) has still prepared stamping equipment, stamping equipment has can cooperate step (B) to carry out the punching press unit of bending in advance of buckling, can cooperate step (C) to carry out the tangent line unit of tangent line operation, can cooperate step (E) to carry out flattening of flattening and beating protruding operation and beat protruding unit, can cooperate step (F) to carry out the first plastic unit of plastic operation, can cooperate step (G) to carry out the pull ring riveting unit of pull ring riveting operation to and can cooperate step (H) to carry out the side cut chamfer unit of side cut and chamfer operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811086991.4A CN110899547A (en) | 2018-09-18 | 2018-09-18 | Method for manufacturing safe pop can cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811086991.4A CN110899547A (en) | 2018-09-18 | 2018-09-18 | Method for manufacturing safe pop can cover |
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| Publication Number | Publication Date |
|---|---|
| CN110899547A true CN110899547A (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811086991.4A Pending CN110899547A (en) | 2018-09-18 | 2018-09-18 | Method for manufacturing safe pop can cover |
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| CN (1) | CN110899547A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3939787A (en) * | 1974-08-19 | 1976-02-24 | Owens-Illinois, Inc. | Convenience closure with safe edges |
| US4017000A (en) * | 1976-06-21 | 1977-04-12 | Wescan, Inc. | Easy open container end with protective edges for its severed score |
| EP0268690A1 (en) * | 1986-06-13 | 1988-06-01 | Toyo Seikan Kaisha Limited | Easy-to-open can lid able to protect cut edge of score and producing process thereof |
| CN104174783A (en) * | 2014-07-15 | 2014-12-03 | 广东英联包装股份有限公司 | Manufacturing method of easy-pull lid with double sides free from injuring hands after opening |
| TWM557236U (en) * | 2017-09-11 | 2018-03-21 | Hsuan Ann Machinery Co Ltd | Safe can lid |
-
2018
- 2018-09-18 CN CN201811086991.4A patent/CN110899547A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3939787A (en) * | 1974-08-19 | 1976-02-24 | Owens-Illinois, Inc. | Convenience closure with safe edges |
| US4017000A (en) * | 1976-06-21 | 1977-04-12 | Wescan, Inc. | Easy open container end with protective edges for its severed score |
| EP0268690A1 (en) * | 1986-06-13 | 1988-06-01 | Toyo Seikan Kaisha Limited | Easy-to-open can lid able to protect cut edge of score and producing process thereof |
| CN104174783A (en) * | 2014-07-15 | 2014-12-03 | 广东英联包装股份有限公司 | Manufacturing method of easy-pull lid with double sides free from injuring hands after opening |
| TWM557236U (en) * | 2017-09-11 | 2018-03-21 | Hsuan Ann Machinery Co Ltd | Safe can lid |
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