CN112921538B - Air knife spraying sizing device and method for digital printing pretreatment of high-pile fabric - Google Patents
Air knife spraying sizing device and method for digital printing pretreatment of high-pile fabric Download PDFInfo
- Publication number
- CN112921538B CN112921538B CN202110314883.3A CN202110314883A CN112921538B CN 112921538 B CN112921538 B CN 112921538B CN 202110314883 A CN202110314883 A CN 202110314883A CN 112921538 B CN112921538 B CN 112921538B
- Authority
- CN
- China
- Prior art keywords
- air knife
- spraying
- sizing device
- pulp
- frame
- 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.)
- Active
Links
- 239000004744 fabric Substances 0.000 title claims abstract description 64
- 238000004513 sizing Methods 0.000 title claims abstract description 51
- 238000005507 spraying Methods 0.000 title claims abstract description 51
- 238000007639 printing Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002002 slurry Substances 0.000 claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000007667 floating Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 3
- 230000003028 elevating effect Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 description 5
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000009715 pressure infiltration Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
- D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
- D06B23/20—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention relates to an air knife spraying sizing device and method for digital printing pretreatment of high-pile fabrics, comprising a frame, a cloth guide roller mechanism and an air knife spraying mechanism; the cloth guide roller mechanism is arranged on the frame and used for guiding and conveying the fabric; the air knife spraying mechanism is positioned above the cloth guide roller mechanism and is used for spraying white pulp on the fabric; the air knife spraying mechanism comprises a slurry tank, a slurry supply pump, an air knife and an air knife lifting mechanism, wherein the slurry tank is used for containing white slurry and is arranged on the frame; the air knife is arranged on the frame in a vertically lifting manner through the air knife lifting mechanism, and the pulp supply pump is used for conveying white pulp in the pulp tank into the air knife. When the air knife spraying sizing device is used for sizing pretreatment of high-pile fabric number, 30% -80% of white pulp can be uniformly carried on the surface of the fabric on the premise of not dumping down the pile, and a good foundation is provided for subsequent ink-jet digital printing.
Description
Technical Field
The invention relates to the technical field of digital printing of fabrics, in particular to an air knife spraying sizing device and method for digital printing pretreatment of high-velvet fabrics.
Background
Before digital printing, the fabric needs to be subjected to sizing pretreatment, and the sizing purpose is to uniformly carry a layer of sizing agent on the surface of the fabric, prevent dye infiltration, ensure the precision of printed patterns and meet the color development requirement of the dye. Currently, the pretreatment methods for sizing the plush fabric mainly comprise padding method, screen printing sizing method and leaching method. The purpose of both of these methods is to have the fabric carry a certain amount of slurry before printing. Padding and suction processes essentially belong to one class, essentially for any slurry. The screen sizing method is only applicable to slurry with viscosity. All the three methods have the advantage that the liquid carrying rate on the fabric after finishing the treatment is relatively uniform when the short-pile fabric is sized. However, when the three sizing pretreatment methods are used for pretreating high-pile fabrics and fabrics with higher gram weights, such as Gao Rongla sert carpets, the high-pile raschel carpets are all pressed down, and once the piles are pressed down, i.e. one pile is pressed on the other pile, the piles are laminated, ink is printed in the condition, and in the pressing and infiltration process, slurry can flow from the head of one pile to the head of the other pile with ink, so that the infiltration effect is very poor.
Therefore, it is necessary to develop an air knife spraying sizing device and method for digital printing pretreatment of high-pile fabrics to solve the problem of poor sizing permeability of the existing high-pile fabrics.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an air knife spraying sizing device for digital printing pretreatment of high-velvet fabrics, which is reasonable in structural design, and an air knife spraying sizing method.
The invention solves the problems by adopting the following technical scheme: a air knife sprays sizing apparatus for high fine hair fabric digital printing pretreatment, includes the frame, its characterized in that: the cloth guide roller mechanism and the air knife spraying mechanism are also included; the cloth guide roller mechanism is arranged on the frame and used for guiding and conveying the fabric; the air knife spraying mechanism is positioned above the cloth guide roller mechanism and is used for spraying white pulp on the fabric; the air knife spraying mechanism comprises a slurry tank, a slurry supply pump, an air knife and an air knife lifting mechanism, wherein the slurry tank is used for containing white slurry and is arranged on the frame; the air knife is arranged on the frame in a vertically lifting manner through the air knife lifting mechanism, and the pulp supply pump is used for conveying white pulp in the pulp tank into the air knife.
Preferably, the air knife spraying sizing device is further provided with a primary pulp barrel and a booster pump, wherein the inlet end of the booster pump is communicated with the primary pulp barrel, and the outlet end of the booster pump is communicated with the pulp tank.
Preferably, a first liquid level sensor is installed in the slurry tank, and the first liquid level sensor is in communication connection with the booster pump.
Preferably, the air knife lifting mechanism adopts two electric push rods, the two electric push rods are respectively arranged at two ends of the air knife, the electric push rods are connected with the frame, and the output ends of the electric push rods are connected with the air knife.
Preferably, each electric putter disposes a resistance ruler, and resistance ruler and electric putter communication connection, resistance ruler install in the frame, and its probe end contacts with the air knife top.
Preferably, the slurry supply pump adopts a gear pump, and eight pumps are arranged in total.
Preferably, the air knife is provided with a second liquid level sensor which is in communication connection with the slurry supply pump.
Preferably, a ventilation electromagnetic valve is arranged on the air knife.
Preferably, the air knife spraying and sizing device further comprises a bearing plate for bearing fabrics, wherein the bearing plate is supported and arranged in a water tank through a plurality of floating springs, and the water tank is arranged on the frame.
The invention also provides an air knife spraying sizing method for the digital printing pretreatment of the high-pile fabric, which is implemented by adopting the air knife spraying sizing device and is characterized in that: the spraying and sizing method of the air knife comprises the following steps: conveying the high-velvet fabric by using a cloth guide roller mechanism; and opening the ventilation electromagnetic valve to discharge air in the air knife, filling white slurry into the air knife by using the slurry supply pump, adjusting the height of the air knife in place by using the electric push rod and the resistance ruler, and finally opening the lower outlet of the air knife to spray the white slurry.
Compared with the prior art, the invention has the following advantages and effects:
1. when the air knife spraying sizing device is adopted to perform sizing pretreatment on the high-pile fabric number, on the premise of not pressing down the piles, 30% -80% of white pulp can be uniformly carried on the surface of the fabric, a good foundation is provided for subsequent ink-jet digital printing, after the subsequent ink-jet digital printing is performed, ink can cover the surfaces of the white pulp and the piles, and in the subsequent pressure infiltration process, the white pulp is permeated to the bottom of the fabric along with the piles by carrying ink, so that the effect of complete permeation is achieved;
2. the air knife can be adjusted in height through the electric push rod and the resistance ruler, so that the lower outlet of the air knife is slightly contacted with the fluff of the fabric, and the lower outlet is a narrow gap with a gap of 2mm, so that white pulp flows to the surface of the fabric along the narrow gap in the width direction, the sizing effect is good, and the fluff cannot be crushed;
3. the air knife spraying sizing method has good sizing effect, is particularly suitable for sizing high-pile fabrics, can not press down the pile, and has good permeability.
Drawings
In order to more clearly illustrate the embodiments of the invention or the solutions in the prior art, a brief description will be given below of the drawings that are needed in the description of the embodiments or the prior art, it being obvious that the drawings in the description below are some embodiments of the invention and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a front view structure of an embodiment of the present invention.
Fig. 2 is a schematic left-view structure of an embodiment of the present invention.
Fig. 3 is a schematic front view of a knife according to an embodiment of the present invention.
Reference numerals illustrate: the device comprises a frame 210, a cloth guide roller mechanism 211, a slurry tank 212, a slurry supply pump 213, an air knife 214, an air knife lifting mechanism 215, a raw slurry barrel 216, a booster pump 217, a resistance ruler 218, a second liquid level sensor 219, an air solenoid valve 220, a support plate 221, a floating spring 222, a water tank 223 and a pin 224.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and not limited to the following examples.
Examples.
See fig. 1-3.
The embodiment discloses an air knife spraying sizing device for digital printing pretreatment of high-pile fabrics, which takes Raschel blanket as an example. The air knife spraying and sizing device comprises a frame 210, a cloth guide roller mechanism 211, an air knife spraying mechanism, a raw pulp barrel 216 and a booster pump 217. The cloth guide roller mechanism 211 is installed on the frame 210 and is used for guiding and conveying the fabric; the air knife spraying mechanism is positioned above the cloth guide roller mechanism 211 and is used for spraying white pulp on the fabric. The inlet end of the booster pump 217 is connected to the raw pulp tank 216, the outlet end of the booster pump 217 is connected to the pulp tank 212, and the booster pump 217 delivers white pulp in the raw pulp tank 216 to the pulp tank 212. A first liquid level sensor is installed in the slurry tank 212 and is in communication connection with the booster pump 217. The first level sensor is used for monitoring the amount of white pulp in the pulp tank 212, when the amount of white pulp is insufficient, the booster pump 217 is started, white pulp is input into the pulp tank 212, and when the input amount reaches a set value, the booster pump 217 is stopped to continue to work.
In this embodiment, the air knife spraying mechanism includes a slurry tank 212, a slurry supply pump 213, an air knife 214, and an air knife lifting mechanism 215, wherein the slurry tank 212 is used for containing white slurry and is mounted on the frame 210; the air knife 214 is provided on the frame 210 to be vertically movable by an air knife lifting mechanism 215, and the pulp feed pump 213 is used for feeding the white pulp in the pulp tank 212 into the air knife 214. Specifically, the air knife lifting mechanism 215 adopts two electric push rods, the two electric push rods are respectively arranged at two ends of the air knife 214, the electric push rods are connected with the frame 210, and the output ends of the electric push rods are connected with the air knife 214. Each electric putter disposes a resistance ruler 218, and resistance ruler 218 and electric putter communication connection, resistance ruler 218 install in the frame, and its probe end contacts with air knife 214 top.
In this embodiment, the slurry pump 213 employs a gear pump, and eight pumps are provided in total. The gear pump is connected with the air knife 214 and the slurry tank 212 through pipelines. The air knife 214 is provided with a second liquid level sensor 219 and an air solenoid valve 220, and the second liquid level sensor 219 is in communication connection with the slurry supply pump 213. When sizing is performed, the ventilation solenoid valve 220 is opened to discharge the air in the air knife 214, and at this time, the lower outlet of the air knife 214 is not opened, and the slurry is supplied into the air knife by the slurry supply pump 213, and when the slurry amount reaches a set value, the slurry supply pump 213 stops supplying slurry.
In this embodiment, the clearance of the lower outlet of the air knife 214 is 2mm, and the uniformity of the air knife in the length direction can be ensured because the clearance of the lower outlet of the air knife is small and the machining precision is high. The white slurry consists of a synthetic thickener, water and a penetrating agent, and has a viscosity of 500-3000CPS. The specific pulp carrying amount of the Raschel blanket is 30-80%.
The air knife spraying and sizing device further comprises a supporting plate 221 for supporting the blanket, wherein the supporting plate 221 is supported and arranged in a water tank 223 through a plurality of floating springs 222, and the water tank 223 is arranged on the frame 210. The support plate 221 is located directly below the air knife 214, and the support plate 221 and the air knife 214 sandwich the blanket so that the blanket surface and the lower surface of the air knife 214 are in slight contact. Since the supporting plate 221 is supported by the floating spring 222, the contact force of the blanket and the lower surface of the air knife is not too large and can be adjusted.
In this embodiment, the method for sizing the high-pile fabric by adopting the air knife spraying sizing device comprises the following steps: conveying the high-pile fabric by using a cloth guide roller mechanism 211; the ventilation solenoid valve 220 is opened to discharge air in the air knife 214, the air knife 214 is filled with white pulp by the pulp supply pump 213, then the air knife 214 is adjusted in position by the electric push rod and the resistance ruler 218, the lower bottom surface of the air knife 214 is flush with the surface of the blanket, the connection part of the air knife and the electric push rod adopts a twistable connecting rod, the air knife is locked by the pin 224, the levelness of the air knife is adjusted by the twistable connecting rod and the pin 224, and after the air knife is integrally adjusted to be completely parallel to the blanket, the lower outlet of the air knife 214 is opened to spray white pulp.
In addition, it should be noted that the specific embodiments described in the present specification may vary from part to part, from name to name, etc., and the above description in the present specification is merely illustrative of the structure of the present invention. Equivalent or simple changes of the structure, characteristics and principle of the present invention are included in the protection scope of the present invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the invention as defined in the accompanying claims.
Claims (7)
1. An air knife spraying sizing device for digital printing pretreatment of high-pile fabrics, which comprises a frame (210), and is characterized in that: the cloth guide roller mechanism (211) and the air knife spraying mechanism are also included; the cloth guide roller mechanism (211) is arranged on the frame (210) and is used for guiding and conveying the fabric; the air knife spraying mechanism is positioned above the cloth guide roller mechanism (211) and is used for spraying white pulp on the fabric; the air knife spraying mechanism comprises a pulp tank (212), a pulp supply pump (213), an air knife (214) and an air knife lifting mechanism (215), wherein the pulp tank (212) is used for containing white pulp and is arranged on the frame (210); the utility model provides a white thick liquid in slurry tank (212) is carried to air knife (214) in air knife (214) can set up on frame (210) through air knife elevating system (215), slurry supply pump (213) are used for carrying in air knife (214) with the white thick liquid in slurry tank (212), air knife elevating system (215) adopt electric putter, and electric putter sets up two, sets up respectively at the both ends of air knife (214), and electric putter is connected with frame (210), and electric putter's output is connected with air knife (214), and every electric putter disposes a resistance chi (218), and resistance chi (218) and electric putter communication connection, and resistance chi (218) are installed in the frame, and its probe end and air knife (214) top contact, install ventilation solenoid valve (220) on air knife (214).
2. The air knife spraying sizing device for digital printing pretreatment of high pile fabrics according to claim 1, wherein the air knife spraying sizing device is characterized in that: the air knife spraying sizing device is further provided with a primary pulp barrel (216) and a booster pump (217), wherein the inlet end of the booster pump (217) is communicated with the primary pulp barrel (216), and the outlet end of the booster pump (217) is communicated with the pulp tank (212).
3. The air knife spraying sizing device for digital printing pretreatment of high pile fabrics according to claim 2, wherein the air knife spraying sizing device is characterized in that: a first liquid level sensor is arranged in the slurry tank (212), and the first liquid level sensor is in communication connection with a booster pump (217).
4. The air knife spraying sizing device for digital printing pretreatment of high pile fabrics according to claim 1, wherein the air knife spraying sizing device is characterized in that: the slurry supply pump (213) adopts a gear pump, and eight pumps are arranged in total.
5. The air knife spraying sizing device for digital printing pretreatment of high pile fabrics according to claim 1, wherein the air knife spraying sizing device is characterized in that: and a second liquid level sensor (219) is arranged on the air knife (214), and the second liquid level sensor (219) is in communication connection with the slurry supply pump (213).
6. The air knife spraying sizing device for digital printing pretreatment of high pile fabrics according to claim 1, wherein the air knife spraying sizing device is characterized in that: the air knife spraying sizing device further comprises a supporting plate (221) for supporting fabrics, the supporting plate (221) is supported and arranged in a water tank (223) through a plurality of floating springs (222), and the water tank (223) is arranged on the frame (210).
7. An air knife spraying sizing method for digital printing pretreatment of high-pile fabrics, which is implemented by adopting the air knife spraying sizing device as claimed in any one of claims 1-6, and is characterized in that: the spraying and sizing method of the air knife comprises the following steps: conveying the high-velvet fabric by using a cloth guide roller mechanism (211); and (3) opening the ventilation electromagnetic valve (220) to discharge air in the air knife (214), filling white pulp into the air knife (214) by using the pulp supply pump (213), adjusting the height of the air knife (214) in place by using the electric push rod and the resistance ruler (218), and finally opening the lower outlet of the air knife (214) to spray the white pulp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110314883.3A CN112921538B (en) | 2021-03-24 | 2021-03-24 | Air knife spraying sizing device and method for digital printing pretreatment of high-pile fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110314883.3A CN112921538B (en) | 2021-03-24 | 2021-03-24 | Air knife spraying sizing device and method for digital printing pretreatment of high-pile fabric |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112921538A CN112921538A (en) | 2021-06-08 |
| CN112921538B true CN112921538B (en) | 2023-09-05 |
Family
ID=76175810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110314883.3A Active CN112921538B (en) | 2021-03-24 | 2021-03-24 | Air knife spraying sizing device and method for digital printing pretreatment of high-pile fabric |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112921538B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180039549A (en) * | 2016-10-10 | 2018-04-18 | (주)안동나염 | Pre-treatment apparatus for digital textile printing and pre-treatment method of digital textile printing using the same |
| CN212000237U (en) * | 2020-04-14 | 2020-11-24 | 常熟欣美胜纺织品有限公司 | Multi-unit three-in-one air heater |
| CN112030398A (en) * | 2020-08-28 | 2020-12-04 | 广州汇诗服饰有限公司 | Fabric spraying and sizing device |
| CN212771437U (en) * | 2020-06-11 | 2021-03-23 | 洛阳雀金绣文化创意有限公司 | Bleaching and dyeing device for fixing color of sparrow gold embroidery silk threads |
-
2021
- 2021-03-24 CN CN202110314883.3A patent/CN112921538B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180039549A (en) * | 2016-10-10 | 2018-04-18 | (주)안동나염 | Pre-treatment apparatus for digital textile printing and pre-treatment method of digital textile printing using the same |
| CN212000237U (en) * | 2020-04-14 | 2020-11-24 | 常熟欣美胜纺织品有限公司 | Multi-unit three-in-one air heater |
| CN212771437U (en) * | 2020-06-11 | 2021-03-23 | 洛阳雀金绣文化创意有限公司 | Bleaching and dyeing device for fixing color of sparrow gold embroidery silk threads |
| CN112030398A (en) * | 2020-08-28 | 2020-12-04 | 广州汇诗服饰有限公司 | Fabric spraying and sizing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112921538A (en) | 2021-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113062134B (en) | Raschel blanket digital ink-jet printing method | |
| CN104842638A (en) | Circular screen printer adjusting mechanism adopting magnetic bar printing mechanism | |
| CN112921538B (en) | Air knife spraying sizing device and method for digital printing pretreatment of high-pile fabric | |
| CN207435701U (en) | A kind of dope dyeing device | |
| CN115045056A (en) | Waterless printing and dyeing equipment capable of improving printing and dyeing quality of towels | |
| CN215041357U (en) | Automatic ink box supply device of printing machine | |
| CN211165786U (en) | Printing roller structure for printing plate making | |
| CN209584580U (en) | A kind of pad dyeing device for textile | |
| CN207276963U (en) | A kind of weaving face fabric is homogenized equipment automatically | |
| CN209904198U (en) | Flat screen printing machine | |
| CN209426338U (en) | A kind of apparatus for printing textile fabric | |
| CN215405004U (en) | Windproof and rainproof jean fabric printing and dyeing device | |
| CN206749274U (en) | A kind of uniform liquid taking device | |
| CN108973317B (en) | Pre-washing device for carpet before printing with ink | |
| CN101722720A (en) | Automatic on-line printing machine | |
| CN2700365Y (en) | High liquid feeding apparatus for fabric wet treatment liquid feeding unit machine | |
| CN215620768U (en) | Digital printing machine for textile and clothing | |
| CN211195416U (en) | Pillow-shaped ink delivery device | |
| CN212375534U (en) | Novel high-efficient textile fabric dyeing device | |
| CN220129748U (en) | Scraper device and silk screen coating equipment | |
| CN216183780U (en) | But lithography apparatus of automatic mixing of colors | |
| CN205529436U (en) | Fabrics production line of dyeing print in succession | |
| CN219427726U (en) | Spraying, humidifying and dosing box before textile ink-jet printing | |
| CN216832777U (en) | Dyeing device with uniformly-dyed replaceable templates for mechanical automatic spinning | |
| CN213441717U (en) | White ink circulating system of printer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |