CN104451914A - Acid feeder for viscose fiber spinning machine - Google Patents
Acid feeder for viscose fiber spinning machine Download PDFInfo
- Publication number
- CN104451914A CN104451914A CN201410744458.8A CN201410744458A CN104451914A CN 104451914 A CN104451914 A CN 104451914A CN 201410744458 A CN201410744458 A CN 201410744458A CN 104451914 A CN104451914 A CN 104451914A
- Authority
- CN
- China
- Prior art keywords
- sour
- acid
- enter
- enters
- supervisor
- Prior art date
- 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.)
- Granted
Links
- 239000002253 acid Substances 0.000 title claims abstract description 171
- 238000009987 spinning Methods 0.000 title claims abstract description 32
- 229920000297 Rayon Polymers 0.000 title claims abstract description 29
- 239000000835 fiber Substances 0.000 title abstract description 5
- 230000000740 bleeding effect Effects 0.000 claims description 6
- 238000009826 distribution Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000007380 fibre production Methods 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 3
- 230000004069 differentiation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 244000144992 flock Species 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D13/00—Complete machines for producing artificial threads
- D01D13/02—Elements of machines in combination
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention relates to an acid feeder for a viscose fiber spinning machine and belongs to the technical field of viscose fiber production equipment. Vertical acid-feeding main pipes and vertical right-angled acid-feeding main pipes are arranged at equal intervals and added on the basis of two vertical acid-feeding main pipes at the head and tail of an acid trough; the main pipes are connected with a centrifugal distributing container; the centrifugal distribution container is communicated with an acid feeding and distributing pipe in which an acid feeding and distributing baffle is provided. Therefore, uniformity of acid feeding for acid bath is greatly improved, uniformity of acid feeding speed is guaranteed, air content of the whole acid feeder, especially of the acid trough, is decreased, smooth forming of yarns is ensured, and late drawing quality of the yarns is guaranteed.
Description
Technical field
The present invention relates to one and enter sour device, more particularly, the present invention relates to a kind of viscose spinning machine and enter sour device, belong to viscose production equipment technical field.
Background technology
Acid bath is the pith in viscose spinning, viscose spinning machine is that qualified viscose glue glue preceding working procedure prepared inputs viscose glue pipes from headstock and the tailstock two interfaces, then spray from the aperture of the spinning head be immersed in acid bath with the form of thread, produce chemical reaction at once, be frozen into tow, then this tow is caused spinning disc through traveller, do appropriate drawing-off, then the tow respectively spinning position generation is caused the tailstock after spinning the seal wire angle boundling of dish top, after five seal wire angles remove a part of acid bath when going out the tailstock, enter next procedure and carry out plasticizing drawing-off.
It is CN2755113 that State Intellectual Property Office discloses a publication number in 2006.2.1, name is called the utility model patent of " acid feeder of viscose flock spinning machine ", which disclose a kind of acid feeder of viscose flock spinning machine, on each spinning is distinguished, be connected with two enter sour arm, every root enters on sour arm to be provided with flowmeter, flowmeter entrance point is equipped with flow control valve, a bypass pipe is connected with in entering on sour arm of flowmeter outlet end, bypass pipe is equipped with by-passing valve, the another end entering sour arm and bypass pipe respectively with enter sour house steward and be connected.Because the utility model makes the every district of viscose staple fiber spinning machine supply acid by the sour arm that enters that two are equipped with flowmeter, the acid intake amount of each differentiation can be regulated equal, namely each differentiation acid bath even concentration is ensured, thus improve the uniformity of viscose staple fiber spinning machine complete machine spinning moulding, improve viscose staple fibre end product quality.
Existing acid bath system is that the acid bath sent here from acid station is directly delivered to into sour head tank, enters acid to acid bath groove through acid bath supervisor from spinning machine head and tail.There is acid bath flow velocity so too fast, enter sour uneven, enter sour flow velocity inconsistent, cause the problem containing large quantity of air in acid bath.Above-mentioned patent is by flowmeter and enter sour arm to make into acid evenly, but like this for meeting into sour uniformity coefficient, or far from being enough, and still there is large quantity of air.
Summary of the invention
The present invention be intended to solve above-mentioned of the prior art enter acid system to enter acid uneven, causing in acid bath, containing the problem of large quantity of air, provides a kind of viscose spinning machine to enter sour device, makes into acid more even, reduce the air existed in acid bath.
To achieve these goals, concrete technical scheme of the present invention is as follows:
A kind of viscose spinning machine enters sour device, comprise into sour head tank and acid bath groove, it is characterized in that: described enter sour head tank and be connected with and laterally enter acid supervisor, described transverse direction enter acid supervisor be connected with uniformly and equidistantly multiple vertically enter acid supervisor, the both sides vertically entering acid supervisor described in every root are respectively arranged with a vertical right angle and enter acid supervisor, describedly vertically enter acid supervisor and be connected to the top of centrifugal dispense container, described vertical right angle enters the both sides that acid supervisor is connected to described centrifugal dispense container, the bottom of described centrifugal dispense container is connected with one and vertically enters sour arm, describedly vertically enter sour arm and be connected to into sour distributing pipe, described enter sour distributing pipe inside be provided with multiple enter sour distributor, described enter sour distributing pipe connect described acid bath groove by many acid bath groove acid inlet tubes again.
The quantity vertically entering acid supervisor of the present invention is 3, and the quantity of described acid bath groove acid inlet tube is 11.
Of the present invention enter sour distributor be many groups, often corresponding one of group describedly vertically enters acid supervisor.
Above-mentioned often group is entered sour distributor and is divided into again three groups, often group is entered sour distributor by three pieces and is formed, wherein two pieces enter sour distributor be arranged on described in enter the upper tube wall of sour distributing pipe, other one piece enter sour distributor be arranged on described in enter the lower tube wall of sour distributing pipe, and entering two pieces that sour distributor is arranged at upper tube wall and enter between sour distributor at lower tube wall.
Above-mentioned enter sour distributor length for described in enter the cross sectional radius of sour distributing pipe.
Acid bath groove acid inlet tube of the present invention is provided with air bleeding valve.
The Advantageous Effects that the present invention brings:
1, the invention solves existing enter acid system to enter acid uneven, cause in acid bath containing the problem of large quantity of air.The present invention vertically enters on the basis of acid supervisor at the first tail of original acid bath groove one, vertically enter acid supervisor and the vertical right angle that add evenly equidistant arrangement enter acid and are responsible for, and connect centrifugal dispense container, centrifugal dispense container is communicated with again inner enters sour distributing pipe with what enter sour distributor, thus greatly improve the uniformity that acid is entered in acid bath, ensure that the uniformity into sour speed, reduce whole enter sour device, air content particularly in acid bath groove, guarantee the shaping smoothly of strand, and the stretching quality that strand is follow-up.
2, the present invention is preferred, and defining the quantity vertically entering acid supervisor is 3, and the quantity of described acid bath groove acid inlet tube is 11.This quantity can make above-mentioned two all pipelines work in coordination, it is more reasonable and smooth and easy to make the distribution of acid bath further, flow and enter acid, what can ensure most of specification spinning machine enters sour effect, has taken into account again the service life of system, has been easy to safeguard and use cost.
3, the present invention is preferred, defines the arrangement into sour distributor, thus the uniformity further increased into acid and the uniformity entering sour speed, decrease the formation of air, reduce the air content in acid bath groove.
4, the present invention is preferred, acid bath groove acid inlet tube is provided with air bleeding valve, reduce further the air content in acid bath groove like this.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention enters sour device.
Reference numeral: 1 being acid bath groove for entering sour head tank, 2,3 being centrifugal dispense container for vertically entering acid supervisor, 5 for vertical right angle enters acid supervisor, 6 for laterally entering acid supervisor, 4,7 being acid bath groove acid inlet tube for entering sour distributing pipe, 9 for entering sour distributor, 10 for vertically entering sour arm, 8,11 be air bleeding valve.
Detailed description of the invention
embodiment 1
A kind of viscose spinning machine enters sour device, comprise into sour head tank 1 and acid bath groove 2, it is characterized in that: described enter sour head tank 1 and be connected with and laterally enter acid supervisor 3, described transverse direction enter acid supervisor 3 be connected with uniformly and equidistantly multiple vertically enter acid supervisor 4, the both sides vertically entering acid supervisor 4 described in every root are respectively arranged with a vertical right angle and enter acid supervisor 5, the described top vertically entered acid supervisor 4 and be connected to centrifugal dispense container 6, described vertical right angle enters the both sides that acid supervisor 5 is connected to described centrifugal dispense container 6, the bottom of described centrifugal dispense container 6 is connected with one and vertically enters sour arm 7, describedly vertically enter sour arm 7 and be connected to into sour distributing pipe 8, described enter sour distributing pipe 8 inside be provided with multiple enter sour distributor 9, described enter sour distributing pipe 8 connect described acid bath groove 2 by many acid bath groove acid inlet tubes 10 again.
embodiment 2
A kind of viscose spinning machine enters sour device, comprise into sour head tank 1 and acid bath groove 2, it is characterized in that: described enter sour head tank 1 and be connected with and laterally enter acid supervisor 3, described transverse direction enter acid supervisor 3 be connected with uniformly and equidistantly multiple vertically enter acid supervisor 4, the both sides vertically entering acid supervisor 4 described in every root are respectively arranged with a vertical right angle and enter acid supervisor 5, the described top vertically entered acid supervisor 4 and be connected to centrifugal dispense container 6, described vertical right angle enters the both sides that acid supervisor 5 is connected to described centrifugal dispense container 6, the bottom of described centrifugal dispense container 6 is connected with one and vertically enters sour arm 7, describedly vertically enter sour arm 7 and be connected to into sour distributing pipe 8, described enter sour distributing pipe 8 inside be provided with multiple enter sour distributor 9, described enter sour distributing pipe 8 connect described acid bath groove 2 by many acid bath groove acid inlet tubes 10 again.
The described quantity vertically entering acid supervisor 4 is 3, and the quantity of described acid bath groove acid inlet tube 10 is 11.
embodiment 3
A kind of viscose spinning machine enters sour device, comprise into sour head tank 1 and acid bath groove 2, it is characterized in that: described enter sour head tank 1 and be connected with and laterally enter acid supervisor 3, described transverse direction enter acid supervisor 3 be connected with uniformly and equidistantly multiple vertically enter acid supervisor 4, the both sides vertically entering acid supervisor 4 described in every root are respectively arranged with a vertical right angle and enter acid supervisor 5, the described top vertically entered acid supervisor 4 and be connected to centrifugal dispense container 6, described vertical right angle enters the both sides that acid supervisor 5 is connected to described centrifugal dispense container 6, the bottom of described centrifugal dispense container 6 is connected with one and vertically enters sour arm 7, describedly vertically enter sour arm 7 and be connected to into sour distributing pipe 8, described enter sour distributing pipe 8 inside be provided with multiple enter sour distributor 9, described enter sour distributing pipe 8 connect described acid bath groove 2 by many acid bath groove acid inlet tubes 10 again.
Described enter sour distributor 9 be many groups, often corresponding one of group describedly vertically enters acid supervisor 4.
embodiment 4
A kind of viscose spinning machine enters sour device, comprise into sour head tank 1 and acid bath groove 2, it is characterized in that: described enter sour head tank 1 and be connected with and laterally enter acid supervisor 3, described transverse direction enter acid supervisor 3 be connected with uniformly and equidistantly multiple vertically enter acid supervisor 4, the both sides vertically entering acid supervisor 4 described in every root are respectively arranged with a vertical right angle and enter acid supervisor 5, the described top vertically entered acid supervisor 4 and be connected to centrifugal dispense container 6, described vertical right angle enters the both sides that acid supervisor 5 is connected to described centrifugal dispense container 6, the bottom of described centrifugal dispense container 6 is connected with one and vertically enters sour arm 7, describedly vertically enter sour arm 7 and be connected to into sour distributing pipe 8, described enter sour distributing pipe 8 inside be provided with multiple enter sour distributor 9, described enter sour distributing pipe 8 connect described acid bath groove 2 by many acid bath groove acid inlet tubes 10 again.
Described enter sour distributor 9 be many groups, often corresponding one of group describedly vertically enters acid supervisor 4.
Described often group is entered sour distributor 9 and is divided into again three groups, often group is entered sour distributor 9 by three pieces and is formed, wherein two pieces enter sour distributor 9 be arranged on described in enter the upper tube wall of sour distributing pipe 8, other one piece enter sour distributor 9 be arranged on described in enter the lower tube wall of sour distributing pipe 8, and entering two pieces that sour distributor 9 is arranged at upper tube wall and enter between sour distributor 9 at lower tube wall.
Described enter sour distributor 9 length for described in enter the cross sectional radius of sour distributing pipe 8.
embodiment 5
A kind of viscose spinning machine enters sour device, comprise into sour head tank 1 and acid bath groove 2, it is characterized in that: described enter sour head tank 1 and be connected with and laterally enter acid supervisor 3, described transverse direction enter acid supervisor 3 be connected with uniformly and equidistantly multiple vertically enter acid supervisor 4, the both sides vertically entering acid supervisor 4 described in every root are respectively arranged with a vertical right angle and enter acid supervisor 5, the described top vertically entered acid supervisor 4 and be connected to centrifugal dispense container 6, described vertical right angle enters the both sides that acid supervisor 5 is connected to described centrifugal dispense container 6, the bottom of described centrifugal dispense container 6 is connected with one and vertically enters sour arm 7, describedly vertically enter sour arm 7 and be connected to into sour distributing pipe 8, described enter sour distributing pipe 8 inside be provided with multiple enter sour distributor 9, described enter sour distributing pipe 8 connect described acid bath groove 2 by many acid bath groove acid inlet tubes 10 again.
Described acid bath groove acid inlet tube 10 is provided with air bleeding valve 11.
embodiment 6
A kind of viscose spinning machine enters sour device, comprise into sour head tank 1 and acid bath groove 2, it is characterized in that: described enter sour head tank 1 and be connected with and laterally enter acid supervisor 3, described transverse direction enter acid supervisor 3 be connected with uniformly and equidistantly multiple vertically enter acid supervisor 4, the both sides vertically entering acid supervisor 4 described in every root are respectively arranged with a vertical right angle and enter acid supervisor 5, the described top vertically entered acid supervisor 4 and be connected to centrifugal dispense container 6, described vertical right angle enters the both sides that acid supervisor 5 is connected to described centrifugal dispense container 6, the bottom of described centrifugal dispense container 6 is connected with one and vertically enters sour arm 7, describedly vertically enter sour arm 7 and be connected to into sour distributing pipe 8, described enter sour distributing pipe 8 inside be provided with multiple enter sour distributor 9, described enter sour distributing pipe 8 connect described acid bath groove 2 by many acid bath groove acid inlet tubes 10 again.
The described quantity vertically entering acid supervisor 4 is 3, and the quantity of described acid bath groove acid inlet tube 10 is 11.
Described enter sour distributor 9 be many groups, often corresponding one of group describedly vertically enters acid supervisor 4.
Described often group is entered sour distributor 9 and is divided into again three groups, often group is entered sour distributor 9 by three pieces and is formed, wherein two pieces enter sour distributor 9 be arranged on described in enter the upper tube wall of sour distributing pipe 8, other one piece enter sour distributor 9 be arranged on described in enter the lower tube wall of sour distributing pipe 8, and entering two pieces that sour distributor 9 is arranged at upper tube wall and enter between sour distributor 9 at lower tube wall.
Described enter sour distributor 9 length for described in enter the cross sectional radius of sour distributing pipe 8.
Described acid bath groove acid inlet tube 10 is provided with air bleeding valve 11.
Claims (6)
1. a viscose spinning machine enters sour device, comprise into sour head tank (1) and acid bath groove (2), it is characterized in that: described enter sour head tank (1) and be connected with and laterally enter acid supervisor (3), described transverse direction enter acid supervisor (3) be connected with uniformly and equidistantly multiple vertically enter acid supervisor (4), the both sides vertically entering acid supervisor (4) described in every root are respectively arranged with a vertical right angle and enter acid supervisor (5), describedly vertically enter acid supervisor (4) and be connected to the top of centrifugal dispense container (6), described vertical right angle enters the both sides that acid supervisor (5) is connected to described centrifugal dispense container (6), the bottom of described centrifugal dispense container (6) is connected with one and vertically enters sour arm (7), describedly vertically enter sour arm (7) and be connected to into sour distributing pipe (8), described enter sour distributing pipe (8) inside be provided with multiple enter sour distributor (9), described enter sour distributing pipe (8) connect described acid bath groove (2) by many acid bath groove acid inlet tubes (10) again.
2. a kind of viscose spinning machine according to claim 1 enters sour device, it is characterized in that: the described quantity vertically entering acid supervisor (4) is 3, and the quantity of described acid bath groove acid inlet tube (10) is 11.
3. a kind of viscose spinning machine according to claim 1 enters sour device, it is characterized in that: described in enter sour distributor (9) and be many groups, often corresponding one of group describedly vertically enters acid supervisor (4).
4. a kind of viscose spinning machine according to claim 3 enters sour device, it is characterized in that: described often group is entered sour distributor (9) and is divided into again three groups, often group is entered sour distributor (9) by three pieces and is formed, wherein two pieces enter sour distributor (9) be arranged on described in enter the upper tube wall of sour distributing pipe (8), other one piece enter sour distributor (9) be arranged on described in enter the lower tube wall of sour distributing pipe (8), and the sour distributor (9) that enters being positioned at lower tube wall is arranged on two pieces of being positioned at upper tube wall and enters between sour distributor (9).
5. a kind of viscose spinning machine according to claim 1,3 or 4 enters sour device, it is characterized in that: described in enter sour distributor (9) length for described in enter the cross sectional radius of sour distributing pipe (8).
6. a kind of viscose spinning machine according to claim 1 enters sour device, it is characterized in that: described acid bath groove acid inlet tube (10) is provided with air bleeding valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744458.8A CN104451914B (en) | 2014-12-09 | 2014-12-09 | Acid feeder for viscose fiber spinning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744458.8A CN104451914B (en) | 2014-12-09 | 2014-12-09 | Acid feeder for viscose fiber spinning machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104451914A true CN104451914A (en) | 2015-03-25 |
| CN104451914B CN104451914B (en) | 2017-01-25 |
Family
ID=52898638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410744458.8A Active CN104451914B (en) | 2014-12-09 | 2014-12-09 | Acid feeder for viscose fiber spinning machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104451914B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110093669A (en) * | 2019-05-28 | 2019-08-06 | 新乡化纤股份有限公司 | A kind of viscose glue continuously spins acid bath groove band pressure spinning process |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2210116A (en) * | 1936-07-01 | 1940-08-06 | Dreyfus Henry | Manufacture of artificial materials |
| US2450750A (en) * | 1945-05-22 | 1948-10-05 | Comptoir Textiles Artificiels | Spinning bath tank |
| US2611929A (en) * | 1951-06-18 | 1952-09-30 | Chemstrand Corp | Method of producing shaped articles from artificial or synthetic fiberor film-forming materials |
| CN1039853A (en) * | 1988-07-27 | 1990-02-21 | 张钦桂 | The manufacture method of viscose rayon and viscose rayon high-speed spinning spinning machine |
| CN2755113Y (en) * | 2004-12-10 | 2006-02-01 | 山东海龙股份有限公司 | Acid feeder of viscose flock spinning machine |
| CN2883408Y (en) * | 2006-02-27 | 2007-03-28 | 宜宾丝丽雅股份有限公司 | Acid feeder of viscose filament spinning machine |
| CN202830261U (en) * | 2012-07-26 | 2013-03-27 | 中国石油天然气股份有限公司 | Polyacrylonitrile precursor coagulating bath circulation current stabilizer |
| CN204325581U (en) * | 2014-12-09 | 2015-05-13 | 成都丽雅纤维股份有限公司 | A kind of viscose spinning machine enters sour device |
-
2014
- 2014-12-09 CN CN201410744458.8A patent/CN104451914B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2210116A (en) * | 1936-07-01 | 1940-08-06 | Dreyfus Henry | Manufacture of artificial materials |
| US2450750A (en) * | 1945-05-22 | 1948-10-05 | Comptoir Textiles Artificiels | Spinning bath tank |
| US2611929A (en) * | 1951-06-18 | 1952-09-30 | Chemstrand Corp | Method of producing shaped articles from artificial or synthetic fiberor film-forming materials |
| CN1039853A (en) * | 1988-07-27 | 1990-02-21 | 张钦桂 | The manufacture method of viscose rayon and viscose rayon high-speed spinning spinning machine |
| CN2755113Y (en) * | 2004-12-10 | 2006-02-01 | 山东海龙股份有限公司 | Acid feeder of viscose flock spinning machine |
| CN2883408Y (en) * | 2006-02-27 | 2007-03-28 | 宜宾丝丽雅股份有限公司 | Acid feeder of viscose filament spinning machine |
| CN202830261U (en) * | 2012-07-26 | 2013-03-27 | 中国石油天然气股份有限公司 | Polyacrylonitrile precursor coagulating bath circulation current stabilizer |
| CN204325581U (en) * | 2014-12-09 | 2015-05-13 | 成都丽雅纤维股份有限公司 | A kind of viscose spinning machine enters sour device |
Non-Patent Citations (4)
| Title |
|---|
| [苏]П.П.马基森，Н.С.基舍来娃（著），张书绅，陈政（译）: "《粘胶短纤维生产》", 31 October 1984 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110093669A (en) * | 2019-05-28 | 2019-08-06 | 新乡化纤股份有限公司 | A kind of viscose glue continuously spins acid bath groove band pressure spinning process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104451914B (en) | 2017-01-25 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240731 Address after: 644002 space Road, Nan'an economic and Technological Development Zone, Yibin, Sichuan Patentee after: YIBIN GRACE GROUP Co.,Ltd. Country or region after: China Address before: 610000 Dawan Town, Qingbaijiang District, Chengdu City, Sichuan Province Patentee before: CHENGDU GRACE FIBRE Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20150325 Assignee: Yibin Siliya Technology Innovation Co.,Ltd. Assignor: YIBIN GRACE GROUP Co.,Ltd. Contract record no.: X2024510000017 Denomination of invention: An acid inlet device for a viscose fiber spinning machine Granted publication date: 20170125 License type: Common License Record date: 20240830 |
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| EE01 | Entry into force of recordation of patent licensing contract |