CN109731295B - Method for closing up machine-sewn ball by gluing - Google Patents
Method for closing up machine-sewn ball by gluing Download PDFInfo
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- CN109731295B CN109731295B CN201910070843.1A CN201910070843A CN109731295B CN 109731295 B CN109731295 B CN 109731295B CN 201910070843 A CN201910070843 A CN 201910070843A CN 109731295 B CN109731295 B CN 109731295B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004026 adhesive bonding Methods 0.000 title claims abstract description 8
- 239000010985 leather Substances 0.000 claims abstract description 189
- 239000003292 glue Substances 0.000 claims description 47
- 238000009958 sewing Methods 0.000 claims description 40
- 239000004744 fabric Substances 0.000 claims description 37
- 230000001680 brushing effect Effects 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 235000009134 Myrica cerifera Nutrition 0.000 claims 1
- 244000269152 Myrica pensylvanica Species 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 3
- 239000010437 gem Substances 0.000 description 2
- 229910001751 gemstone Inorganic materials 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004848 polyfunctional curative Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241000270923 Hesperostipa comata Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
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Abstract
The invention discloses a method for closing up a machine-sewn ball by gluing, which is applied to a football ball shell consisting of a pentagonal leather sheet and a hexagonal leather sheet.
Description
Technical Field
The invention relates to the technical field of football, in particular to a method for closing up a machine-sewn ball through gluing.
Background
Football, one of the single sports with the most influential effects of the world sports world. In the production step of the football, the closing process is a door-to-door examination technology, and the fineness of the process has great influence on the product quality. Wherein, the existing closing-up process generally adopts a closing-up mode (namely a manual needle thread closing-up mode) of picking up a needle thread to penetrate through a skin and seam. However, the steps of the method are complicated, the requirement on the technical proficiency of workers is high, the needle head is easy to puncture the bladder to leak air, and the working efficiency is still to be improved.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a method for machine-sewn ball gluing and closing.
In order to achieve the purpose, the invention provides a method for closing up a machine-sewn ball by gluing, which is applied to a football shell consisting of pentagonal leather sheets and hexagonal leather sheets and comprises the following steps:
(1) respectively drawing an arc line at the position of the edge of the back surface of a designated pentagonal leather sheet close to one of the edges and at the position of the edge of the back surface of a designated hexagonal leather sheet close to one of the edges, respectively cutting off the arc lines of the two leather sheets to the back surface area of the leather sheet between the edges by using a cutter, wherein the cutting off thickness is one half to two thirds of the thickness of the whole leather sheet;
(2) coating glue on the remaining area cut between the arc lines of the two designated leather sheets in the step (1) and the edge, turning the area inwards, and adhering and shaping through the glue to realize edge covering;
(3) all pentagonal leather sheets and hexagonal leather sheets for preparing the football shell are spliced and sewn together, and four adjacent edges are left without sewing to form an opening, so that a closed ball shell with the opening is obtained; wherein, the pentagonal leather sheets and the hexagonal leather sheets processed in the step (2) are adjacent leather sheets which need to be spliced with each other;
(4) installing the bladder, aligning the ball nozzle of the bladder to the hexagonal leather sheet with the ball nozzle hole to enable the bladder and the hexagonal leather sheet to be oppositely bonded, respectively brushing glue on the reverse sides of the pentagonal leather sheet and the hexagonal leather sheet processed in the step (2) after the bladder is installed, and bonding one end part of the oxford fabric and the reverse side of the hexagonal leather sheet after brushing the glue when the glue is dried to 80% -85%;
(5) turning the whole spherical shell from the back side to the front side, sewing three adjacent edges which are not sewn at the opening position of the spherical shell by a high-speed sewing machine, and leaving the edges of the pentagonal leather sheets and the hexagonal leather sheets which are processed in the step (2) as final closing positions without sewing;
(6) pasting the other end part of the oxford fabric and the back surface of the pentagon leather sheet after glue brushing, after the other end part of the oxford fabric is pasted, closely pressing and flattening the back surfaces of the pentagon leather sheet and the hexagonal leather sheet which are adhered to the oxford fabric for 8-15 seconds, and then inflating the bladder until the ball shell can be propped up;
(7) rolling and flattening the splicing part of the edge of the pentagon leather sheet and the hexagon leather sheet which are adhered with the oxford cloth by using a cylindrical skin sticking rod, and shaping the pentagon leather sheet and the hexagon leather sheet;
(8) dispensing glue at the splicing part of the edge of the pentagon leather sheet and the hexagon leather sheet which are adhered to the oxford fabric, slightly extruding the glue for 25-35 seconds by hand after the glue is dispensed, removing the redundant glue by using clean cloth after the glue is dried to 80-85%, and rolling and flattening by using a skinning rod.
In a preferred embodiment, the number of the pentagonal leather sheets is 12, and the number of the hexagonal leather sheets is 20.
As a preferred embodiment, all the pentagonal leather sheets and the hexagonal leather sheets are composed of a TPU layer, a TPE layer and a bottom cloth layer which are sequentially adhered from outside to inside.
As a preferred embodiment, the oxford fabric may be provided as a double-layered oxford fabric having a length of 10cm and a width of 3 cm.
As a preferred embodiment, the knife used in step (1) includes a blade and scissors.
As a preferred embodiment, the glue used in step (2) is yellow glue.
As a preferred embodiment, the glue used in step (8) is a southern Jewel resin glue plus 5% hardener.
As a preferred embodiment, the step (3) specifically comprises the following steps:
according to the shapes of the ball cover, the ball bottom and the ball waist, respectively selecting the required pentagonal leather sheet and the hexagonal leather sheet to splice and sew, respectively preparing the ball cover, the ball bottom and the ball waist of the ball shell, then sewing the prepared ball bottom and the ball waist, then sewing the ball cover and the ball waist, and finally leaving four adjacent edges between the ball cover and the ball waist without sewing to form an opening, thereby obtaining the ball shell with the opening and after the ball is closed.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts an adhesive closing-in mode, does not need manual needle and thread closing-in, avoids the occurrence of air leakage caused by the fact that the needle penetrates the bladder, has simple operation, high closing-in speed and low requirement on the technical proficiency of workers, and can improve the working efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is an expanded view of a soccer ball provided by the present invention;
FIG. 2 is a schematic diagram of a line drawn on a designated pentagonal skin and a hexagonal skin provided by the present invention;
FIG. 3 is a schematic view of the hexagonal leather sheet of the spherical shell of the present invention adhered to an end of an oxford fabric;
FIG. 4 is a schematic view of the oxford fabric exposed outside the spherical shell before being adhered to the pentagonal leather sheet;
FIG. 5 is a schematic view of the present invention in which the back surfaces of the pentagon leather sheet and the hexagon leather sheet adhered to the oxford fabric are held together by hand and pinched flat;
fig. 6 is a schematic view of the present invention when the splicing position of the edge of the pentagonal leather sheet and the hexagonal leather sheet is rolled and flattened by the skin sticking rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a machine-sewn football, as shown in fig. 1, a ball shell of which may be composed of 12 pentagonal panels and 20 hexagonal panels, and a bladder may be a bladder made of butyl rubber.
Wherein, all pentagonal leather sheets and hexagonal leather sheets can be composed of a TPU layer, a TPE layer and a bottom cloth layer which are sequentially adhered from outside to inside. The TPU material is the surface course material, and TPE is the foaming material, and thickness can be for 3.0mm, and the TPE layer can make the foot of football feel comfortable, and the base cloth layer can be for interwoven cloth or other cloth.
The embodiment of the invention provides a method for machine-sewn ball gluing and closing, which comprises the following steps: knife, scissors, brush, dispenser, skin stick and the like, and the method comprises the following steps:
(1) respectively drawing an arc line at the edge part of the back surface of a designated pentagonal leather sheet 2 close to one side (namely, the butt joint side used as a closing-in) and the edge part of the back surface of a designated hexagonal leather sheet 1 close to one side (namely, the butt joint side used as a closing-in), respectively cutting the arc lines of the two leather sheets to the back surface area 5 of the leather sheet between the edges by using a cutter, and cutting the leather sheet with the thickness of one half to two thirds of the thickness of the whole leather sheet (as shown in figure 2);
wherein, the distance of pitch arc apart from the leather sheet border can be for 2 ~ 4mm, during specific excision, can cut open from the side of leather sheet with the blade earlier, and the incision degree of depth needs to reach the pitch arc position, then with the scissors along the pitch arc to predetermine the TPE layer of thickness and bottom cloth layer (half to two-thirds of monoblock leather sheet thickness promptly) and get rid of.
(2) Coating glue on the remaining area cut between the arc lines of the two designated leather sheets in the step (1) and the edge, turning the area inwards, and adhering and shaping through the glue to realize edge covering;
wherein, the remaining area cut off still has TPU layer and part of TPE layer, and the glue used in step (2) can be yellow glue. The pentagonal leather sheets and the hexagonal leather sheets processed in the step (2) are adjacent leather sheets which need to be spliced with each other, and the pentagonal leather sheets and the hexagonal leather sheets which are used as the closing leather sheets need to be wrapped by one edge first.
(3) All pentagonal leather sheets and hexagonal leather sheets for preparing the football shell are spliced and sewn together, and four adjacent edges are left without sewing to form an opening, so that a closed ball shell with the opening is obtained;
further, the step (3) specifically includes the following steps:
according to the shapes of the ball cover, the ball bottom and the ball waist, respectively selecting the required pentagonal leather sheet and the hexagonal leather sheet to splice and sew, respectively preparing the ball cover, the ball bottom and the ball waist of the ball shell, then sewing the prepared ball bottom and the ball waist, then sewing the ball cover and the ball waist, and finally leaving four adjacent edges between the ball cover and the ball waist without sewing to form an opening, thereby obtaining the ball shell with the opening and after the ball is closed.
The sewing of the ball cover or the ball bottom comprises the following steps:
splicing and pressing one edge of a first hexagonal leather sheet and a second hexagonal leather sheet of the ball cover or the ball bottom into a symmetrical shape, then horizontally placing the leather sheets under a needle foot of a machine, placing a needle until the leather sheets are away from three needles on the edge, reversing the needle, then moving the needle forwards, and when the needle thread moves to the end, reversing the distance of the three needles by the edge;
splicing and sewing the second hexagonal leather sheet and the third hexagonal leather sheet and splicing and sewing the third hexagonal leather sheet and the fourth hexagonal leather sheet in the same sewing mode of the first hexagonal leather sheet and the second hexagonal leather sheet;
sewing the pentagonal leather sheets and the inner edges of the first hexagonal leather sheet to the fourth hexagonal leather sheet;
and sewing the fifth hexagonal leather sheet with the first hexagonal leather sheet, the pentagonal leather sheet and the fourth hexagonal leather sheet so as to enable the pentagonal leather sheet to be positioned in the middle of the five hexagonal leather sheets.
The sewing of the waist comprises the following steps:
sequentially sewing the first hexagonal leather piece to the tenth hexagonal leather piece of the ball waist to realize connection;
sewing the first pentagonal leather piece with the first hexagonal leather piece and the second hexagonal leather piece, sewing the second pentagonal leather piece with the second hexagonal leather piece, the third hexagonal leather piece with the fourth hexagonal leather piece, the fifth hexagonal leather piece with the sixth hexagonal leather piece, the fourth pentagonal leather piece with the sixth hexagonal leather piece, the seventh hexagonal leather piece with the eighth hexagonal leather piece, sewing the fifth pentagonal leather piece with the eighth hexagonal leather piece, the ninth hexagonal leather piece with the tenth hexagonal leather piece, sewing the sixth pentagonal leather piece with the tenth hexagonal leather piece and the ninth hexagonal leather piece, sewing the seventh pentagonal leather piece with the ninth hexagonal leather piece, the eighth hexagonal leather piece with the seventh hexagonal leather piece, sewing the seventh hexagonal leather piece with the sixth hexagonal leather piece, the sixth hexagonal leather piece with the sixth hexagonal leather piece and the seventh hexagonal leather piece, sewing the fifth hexagonal leather piece with the sixth hexagonal leather piece and the fifth hexagonal leather piece, and (3) sewing the ninth pentagonal leather sheet with the fifth hexagonal leather sheet, the fourth hexagonal leather sheet and the third hexagonal leather sheet, and sewing the tenth pentagonal leather sheet with the third hexagonal leather sheet, the second hexagonal leather sheet and the first hexagonal leather sheet.
The ball combining body of the ball cover, the ball bottom and the ball waist comprises the following steps:
sequentially sewing and connecting a first pentagonal leather sheet, a second hexagonal leather sheet, a second pentagonal leather sheet, a fourth hexagonal leather sheet, a third pentagonal leather sheet, a sixth hexagonal leather sheet, a fourth pentagonal leather sheet, an eighth hexagonal leather sheet, a fifth pentagonal leather sheet and a tenth hexagonal leather sheet which are positioned on one side of the ball waist with the edge of the hexagonal leather sheet at the ball bottom to form a cover-free ball shell;
the edge of the hexagonal leather sheet of the ball cover and the unseamed edge of the uncovered ball shell with the closed bottom waist are sewn in sequence, and four last adjacent edges are reserved.
(4) Installing the bladder, aligning the ball mouth of the bladder to the hexagonal leather sheet with the ball mouth hole to enable the bladder and the hexagonal leather sheet to be oppositely bonded, respectively brushing glue on the reverse sides of the pentagonal leather sheet 2 and the hexagonal leather sheet 1 processed in the step (2) after the bladder is installed, and bonding one end part (about half) of the oxford fabric 6 with the reverse side of the hexagonal leather sheet 1 after the glue is dried to 80-85% (as shown in figure 3);
wherein, the oxford cloth can be a double-layer glued oxford cloth with the length of 10cm and the width of 3 cm. The hexagonal leather sheets 1 can be pasted firstly, and the pentagonal leather sheets 2 can be pasted after the vehicle is lifted.
(5) Turning the whole spherical shell from the back side to the front side, sewing three adjacent edges which are not sewn at the opening position of the spherical shell by a high-speed sewing machine, and leaving the edge edges (i.e. the closing edges) of the pentagonal leather sheets and the hexagonal leather sheets which are processed in the step (2) as final closing positions without sewing;
(6) pasting the other end part of the oxford fabric 6 and the back surface of the pentagon leather sheet 2 after being brushed with glue, after the other end part of the oxford fabric is pasted, closely kneading and flattening the back surfaces of the pentagon leather sheet 2 and the hexagonal leather sheet 1 which are adhered with the oxford fabric for 8-15 seconds, and then inflating the bladder until the ball shell can be propped up (as shown in figures 4 and 5);
wherein, after the oxford 6 and the hexagonal leather sheet are pasted, the oxford and the pentagonal leather sheet are not required to be pasted together in advance, otherwise, the oxford is not flat, the kicking resistance of the dispensing closing-in is reduced, and the oxford is required to be pasted after the shell is turned over and the car is lifted.
(7) Rolling and flattening a splicing part A at the edge of the edges of the pentagon leather sheets and the hexagon leather sheets which are adhered with the oxford fabric by using a cylindrical skinning rod 7, and shaping the skinning rod (shown in figure 6);
because the edge of one edge of the final closed end is not covered so well after sewing, liner loading and high turning, glue is easy to permeate into the bladder during glue dispensing, and a skinning rod is needed to roll and flatten before glue dispensing and shaping.
(8) Dispensing glue at the splicing part of the edge of the pentagon leather sheet and the hexagon leather sheet which are adhered to the oxford fabric, slightly extruding the glue for 25-35 seconds by hand after the glue is dispensed, removing the redundant glue by using clean cloth after the glue is dried to 80-85%, and rolling and flattening by using a skinning rod.
Wherein, the glue can be south Jewel resin (NP-86KN) glue and 5% of hardener.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (3)
1. A method for machine-sewn ball gluing and closing in is applied to a football shell consisting of pentagonal leather sheets and hexagonal leather sheets, and is characterized by comprising the following steps:
(1) respectively drawing an arc line at the position of the edge of the back surface of a designated pentagonal leather sheet close to one of the edges and at the position of the edge of the back surface of a designated hexagonal leather sheet close to one of the edges, respectively cutting off the arc lines of the two leather sheets to the back surface area of the leather sheet between the edges by using a cutter, wherein the cutting off thickness is one half to two thirds of the thickness of the whole leather sheet;
(2) coating glue on the remaining area cut between the arc lines of the two designated leather sheets in the step (1) and the edge, turning the area inwards, and adhering and shaping through the glue to realize edge covering;
(3) all pentagonal leather sheets and hexagonal leather sheets for preparing the football shell are spliced and sewn together, and four adjacent edges are left without sewing to form an opening, so that a closed ball shell with the opening is obtained; wherein, the pentagonal leather sheets and the hexagonal leather sheets processed in the step (2) are adjacent leather sheets which need to be spliced with each other;
(4) installing the bladder, aligning the ball nozzle of the bladder to the hexagonal leather sheet with the ball nozzle hole to enable the bladder and the hexagonal leather sheet to be oppositely bonded, respectively brushing glue on the reverse sides of the pentagonal leather sheet and the hexagonal leather sheet processed in the step (2) after the bladder is installed, and bonding one end part of the oxford fabric and the reverse side of the hexagonal leather sheet after brushing the glue when the glue is dried to 80% -85%;
(5) turning the whole spherical shell from the back side to the front side, sewing three adjacent edges which are not sewn at the opening position of the spherical shell by a high-speed sewing machine, and leaving the edges of the pentagonal leather sheets and the hexagonal leather sheets which are processed in the step (2) as final closing positions without sewing;
(6) pasting the other end part of the oxford fabric and the back surface of the pentagon leather sheet after glue brushing, after the other end part of the oxford fabric is pasted, closely pressing and flattening the back surfaces of the pentagon leather sheet and the hexagonal leather sheet which are adhered to the oxford fabric for 8-15 seconds, and then inflating the bladder until the ball shell can be propped up;
(7) rolling and flattening the splicing part of the edge of the pentagon leather sheet and the hexagon leather sheet which are adhered with the oxford cloth by using a cylindrical skin sticking rod, and shaping the pentagon leather sheet and the hexagon leather sheet;
(8) dispensing glue at the splicing part of the edge of the pentagon leather sheet and the hexagon leather sheet which are adhered to the oxford fabric, slightly extruding the glue for 25-35 seconds by hand after the glue is dispensed, removing the redundant glue by using clean cloth after the glue is dried to 80-85%, and rolling and flattening by using a skinning rod;
all the pentagonal leather sheets and the hexagonal leather sheets are composed of a TPU layer, a TPE layer and a bottom cloth layer which are sequentially adhered from outside to inside;
the oxford fabric can be a double-layer glued oxford fabric with the length of 10cm and the width of 3 cm;
the glue used in the step (2) is yellow glue; the glue used in the step (8) is the southern bayberry resin glue added with 5% of a hardening agent;
the step (3) specifically comprises the following steps:
according to the shapes of the ball cover, the ball bottom and the ball waist, respectively selecting the required pentagonal leather sheet and the hexagonal leather sheet to splice and sew, respectively preparing the ball cover, the ball bottom and the ball waist of the ball shell, then sewing the prepared ball bottom and the ball waist, then sewing the ball cover and the ball waist, and finally leaving four adjacent edges between the ball cover and the ball waist without sewing to form an opening, thereby obtaining the ball shell with the opening and after the ball is closed.
2. The method of machine-sewn ball-glued setoff of claim 1, wherein the number of pentagonal panels is 12 and the number of hexagonal panels is 20.
3. The method of seam ball bonding a cuff as in claim 1 wherein the knife used in step (1) comprises a blade and scissors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910070843.1A CN109731295B (en) | 2019-01-25 | 2019-01-25 | Method for closing up machine-sewn ball by gluing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910070843.1A CN109731295B (en) | 2019-01-25 | 2019-01-25 | Method for closing up machine-sewn ball by gluing |
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| Publication Number | Publication Date |
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| CN109731295A CN109731295A (en) | 2019-05-10 |
| CN109731295B true CN109731295B (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910070843.1A Active CN109731295B (en) | 2019-01-25 | 2019-01-25 | Method for closing up machine-sewn ball by gluing |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6685585B2 (en) * | 1998-05-22 | 2004-02-03 | Adidas International B.V. | Ball for ball game |
| BRMU9002275U2 (en) * | 2010-11-30 | 2013-03-05 | Roberto Estefano | Arrangement introduced in sports balls |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8608599B2 (en) * | 2009-03-20 | 2013-12-17 | Nike, Inc. | Sport ball casing and methods of manufacturing the casing |
| CN102258851B (en) * | 2011-07-28 | 2012-10-31 | 青岛新新体育用品有限公司 | Playing ball and manufacturing method thereof |
| US9586098B1 (en) * | 2016-01-12 | 2017-03-07 | Zain-Ul-Abideen Ahsan | Sports ball and method of manufacturing sports ball |
| CN106110600B (en) * | 2016-08-19 | 2020-05-19 | 九江乐胜运动器材有限公司 | Sport ball and manufacturing method thereof |
-
2019
- 2019-01-25 CN CN201910070843.1A patent/CN109731295B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6685585B2 (en) * | 1998-05-22 | 2004-02-03 | Adidas International B.V. | Ball for ball game |
| BRMU9002275U2 (en) * | 2010-11-30 | 2013-03-05 | Roberto Estefano | Arrangement introduced in sports balls |
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| CN109731295A (en) | 2019-05-10 |
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Denomination of invention: Method of machine sewing ball adhesive closure Granted publication date: 20211123 Pledgee: Industrial and Commercial Bank of China Limited Gaozhou Sub branch Pledgor: GAOZHOU RONGCHENG SPORTING GOODS Co.,Ltd. Registration number: Y2024980005270 |
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