CN114075789A - 一种布料的安定整理方法 - Google Patents

一种布料的安定整理方法 Download PDF

Info

Publication number
CN114075789A
CN114075789A CN202010800841.6A CN202010800841A CN114075789A CN 114075789 A CN114075789 A CN 114075789A CN 202010800841 A CN202010800841 A CN 202010800841A CN 114075789 A CN114075789 A CN 114075789A
Authority
CN
China
Prior art keywords
cloth
finishing
stabilizing
water
rolling
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.)
Pending
Application number
CN202010800841.6A
Other languages
English (en)
Inventor
傅红平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Guang Yuan Fabric Co ltd
Original Assignee
Ningbo Guang Yuan Fabric Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ningbo Guang Yuan Fabric Co ltd filed Critical Ningbo Guang Yuan Fabric Co ltd
Priority to CN202010800841.6A priority Critical patent/CN114075789A/zh
Publication of CN114075789A publication Critical patent/CN114075789A/zh
Pending legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/12—Processes in which the treating agent is incorporated in microcapsules
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with hydrogen peroxide or peroxides of metals; with persulfuric, permanganic, pernitric, percarbonic acids or their salts
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/152—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen having a hydroxy group bound to a carbon atom of a six-membered aromatic ring
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/38—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using reactive dyes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/673—Inorganic compounds
    • D06P1/67333—Salts or hydroxides
    • D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/58—Material containing hydroxyl groups
    • D06P3/60—Natural or regenerated cellulose
    • D06P3/66—Natural or regenerated cellulose using reactive dyes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/02—After-treatment
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/02—After-treatment
    • D06P5/04—After-treatment with organic compounds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/02—Natural fibres, other than mineral fibres
    • D06M2101/04—Vegetal fibres
    • D06M2101/06—Vegetal fibres cellulosic

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Coloring (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

本发明公开一种布料的安定整理方法，本发明使用一种有效成分为提取于天然大麻油中的浓缩大麻二酚与大麻籽油，通过制成聚氨酯微胶囊的方法，对纺织品进行安定整理加工，使纺织品在使用过程具有镇静安定、改善人体睡眠作用的染整技术。由于大麻二酚与大麻籽油具有镇静安定、改善人体睡眠作用，将它们制成聚氨酯微胶囊然后对纺织品进行安定整理加工，使纺织品在使用过程中拥有上述成分的功效。

Description

一种布料的安定整理方法
技术领域
本发明属于纺织品染整加工领域，具体涉及对布料进行安定整理，使其在使用过程中具有一定功效的布料安定整理方法。
背景技术
城市的不断发展加快了人们的生活节奏，随着生活压力加大，失眠焦虑的人群不断增加，很多人长期处于这种亚健康状态。纺织品安定整理的出现很好的迎合了这部分人群的需求。有效成分为提取于天然大麻油中的浓缩大麻二酚与大麻籽油，具有镇静安定、改善人体睡眠的作用，在运动时还可以缓解肌肉疼痛，对皮肤还有消炎作用，而对人体无副作用。大麻二酚对人体的益处在营养学与美容领域方面以得到广泛的应用，而在纺织品领域的应用还未开始应用。
发明内容
本发明所要解决的技术问题是，将有效成分为提取于天然大麻油中的浓缩大麻二酚与大麻籽油通过制成聚氨酯微胶囊的方法，对纺织品进行安定整理加工，使纺织品在使用过程中具有了镇静安定、改善人体睡眠的作用。同时因为采用了微胶囊的方法，使得纺织品有效成分能够缓慢的释放，使得有效成分作用时间大大延长，由于微胶囊可以牢固的附着在织物上，有效成分的耐洗性也得到了加强。
本发明的技术解决方案如下：一种布料的安定整理方法，包括以下步骤：
1）坯布反面理布；
2）热水浸轧；
3）将布料加入染缸进行漂染洗处理，分三个阶段：精炼阶段、染色阶段、水洗阶段；
4）水洗阶段出缸后将布料均匀的放到脱水机里脱水，脱水后将布进行开幅并烘干；
5）预先将效成分为提取于天然大麻油中的浓缩大麻二酚与大麻籽油制成聚氨酯微胶囊作为安定整理剂；
6）采用步骤5）的安定整理剂与交联剂加水配置成整理溶液，将配好的溶液加入到定型机轧液槽里，将布料通过轧液槽浸湿后用轧车轧去多余的液体，再烘干，使得聚氨酯微胶囊均匀的固着在布面上。
步骤2）中热水浸轧具体为先将布匹通过热轧机的水槽，热水温度控制在60-80℃，车速控制在20-40m/min左右，轧车压力为0.3-0.5MPa，轧后布面带液率为70%-90%；
步骤6）中整理溶液组分浓度为安定整理剂40-80g/L，交联剂8-20g/L。
具体加工工艺流程如下：
1）坯布反面理布：将圆桶布反面朝外并连接。
2）热水浸轧：将理好的坯布通过热轧机，先浸入热水，再经过轧车压去多余的水分。
3）将布进入染缸进行漂染洗处理。分三个阶段：
a）精炼阶段：先将水加入到染缸里达到规定的数量后，再将精炼用的化学助剂加入到染缸里，打开蒸汽加热，使水温达到规定值，保持水流与布在染缸里循环流动，保温一段时间后，坯布上的杂质已被清除，排除脏水，重新放水进入染缸用清水或助剂清洗干净，接下来进入染色阶段。其中，使用的化学助剂浓度为：双氧水4-8g/L，烧碱1-2g/L，表面活性剂1-2g/L，螯合剂0-2g/；处理温度为90℃-100℃；处理时间为40min-60min。
b）染色阶段：在染缸里加入规定量的清水后，打开蒸汽将水温升温到规定值，加入助剂及部分染料，保持水流与布在染缸里循环流动一段时间后，再将剩余的染料加进染缸里，运行一段时间后，加入规定的化学助剂运行一段时间后，再加入规定助剂进行固色，固色后染色阶段完成。其中，使用的助剂浓度为：染料0-8%，元明粉5-80g/L，纯碱5-50g/L；染色温度为60℃-80℃；染色时间为60min-90min；染色浴比为1:10-1:20。
c）水洗阶段：染色完成后，排去脏水，将干净的水放进染缸内，加入皂洗剂，用蒸汽将水温升到规定值，对布匹进行皂洗，以洗去布上残留的助剂与浮色。水洗阶段，使用的助剂浓度为：冰醋酸1-2g/L，表面活性剂1-2g/L，水洗温度为80℃-100℃，水洗时间为15min-30min。
4）出缸后将布匹均匀的放到脱水机内进行脱水，脱水后将布放到开幅机进行开幅，开幅后将布通过烘干机烘干。
5）后整理定型，在这道工序进行安定功能整理，方法是将预先准备好的有效成分包裹在微胶囊内的聚氨酯微胶囊形式的安定整理剂加入到定型机轧液槽，将布通过轧液槽浸湿后用轧车轧去多余的液体后，再进入烘房烘干，使得有效成分被微胶囊包裹着均匀的固着在布面上。
本发明的有益效果是：本发明使用一种有效成分为提取于天然大麻油中的浓缩大麻二酚与大麻籽油，通过制成聚氨酯微胶囊的方法，对纺织品进行安定整理加工，使纺织品在使用过程具有镇静安定、改善人体睡眠作用的染整技术。由于大麻二酚与大麻籽油具有镇静安定、改善人体睡眠作用，将它们制成聚氨酯微胶囊然后对纺织品进行安定整理加工，使纺织品在使用过程中拥有上述成分的功效。
具体实施方式
下面用具体实施例对本发明做进一步详细说明，但本发明不仅局限于以下具体实施例。
实施例
米色全棉汗布10kg
1）坯布反面理布。
2）热水浸轧：先将布匹通过热轧机的水槽，热水温度控制在80℃，车速控制在20m/min左右，轧车压力为0.3MPa，轧后布面带液率为70%，在这个工序里要时刻注意布面折痕的产生。
3）将布进入染缸进行漂染洗处理。分3个阶段：
a）精炼阶段：先将100kg水加入到染缸里，再将精炼用的化学助剂加入到染缸里，品种与用量为双氧水400g，固体片碱150g，表面活性剂100g。打开蒸汽加热，使水温达到90℃-100℃，保持水流与布在染缸里循环流动，循环过程中要时刻注意不要让布匹纠缠，缠绕在一起，以免产生处理不均匀现象，保温50min-60min后，坯布上的杂质已基本被清除干净。排除脏水，重新放水100kg进入染缸，加入50g除氧粉，冷水运行10min后，布面残余的双氧水以基本去除，排水后，进入接下来进入染色阶段。
b）染色阶段：先在染缸里加入100kg的清水，升温到60℃后，加入染料品种与数量如下：活性红SHF 4.9g，活性黄K-HL 12g，活性蓝K-HL 1.8g，染色10min后，加入元明粉4kg后保温30min，再加入纯碱1.5保温60min。取样对色，颜色OK后排液，进水水洗。
C）水洗阶段：染缸进水100kg后，加入冰醋酸100g，冷水运行10min，将剩余的残碱中和，排液后再进水100kg，加入表面活性剂100gL，打开蒸汽升温到80℃，水洗时间15min。排液进水100kg运行10min后排液出缸。
4） 出缸后将布均匀的放到脱水机里脱水，脱水后将布进行开幅并烘干。
5）预先将效成分为提取于天然大麻油中的浓缩大麻二酚与大麻籽油，制成聚氨酯微胶囊分散液的形式作为安定整理剂。
6）后整理定型：先配置整理用的溶液，使用助剂及用量为：安定整理剂40g/L，交联剂8g/L，将配好的溶液加入到定型机轧液槽里，将布通过轧液槽浸湿后用轧车轧去多余的液体，轧车压力为0.4MPa，轧液后布面带液率为70%，再进入烘房烘干，定型机烘箱温度设定为130℃，车速20m/min，这样就使得有效成分被微胶囊包裹着均匀的固着在布面上。所述交联剂为纺织业市售常规交联剂。
经过检测耐洗性高达30次以上。
以上仅是本发明的特征实施范例，对本发明保护范围不构成任何限制。凡采用同等交换或者等效替换而形成的技术方案，均落在本发明权利保护范围之内。

Claims (3)

1.一种布料的安定整理方法，其特征在于，包括以下步骤：
1）坯布反面理布；
2）热水浸轧；
3）将布料加入染缸进行漂染洗处理，分三个阶段：精炼阶段、染色阶段、水洗阶段；
4）水洗阶段出缸后将布料均匀的放到脱水机里脱水，脱水后将布进行开幅并烘干；
5）预先将效成分为提取于天然大麻油中的浓缩大麻二酚与大麻籽油制成聚氨酯微胶囊作为安定整理剂；
6）采用步骤5）的安定整理剂与交联剂加水配置成整理溶液，将配好的溶液加入到定型机轧液槽里，将布料通过轧液槽浸湿后用轧车轧去多余的液体，再烘干，使得聚氨酯微胶囊均匀的固着在布面上。
2.根据权利要求1所述的布料的安定整理方法，其特征在于，步骤2）中热水浸轧具体为先将布匹通过热轧机的水槽，热水温度控制在60-80℃，车速控制在20-40m/min左右，轧车压力为0.3-0.5MPa，轧后布面带液率为70%-90%。
3.根据权利要求1所述的布料的安定整理方法，其特征在于，步骤6）中整理溶液组分浓度为安定整理剂40-80g/L，交联剂8-20g/L。
CN202010800841.6A 2020-08-11 2020-08-11 一种布料的安定整理方法 Pending CN114075789A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010800841.6A CN114075789A (zh) 2020-08-11 2020-08-11 一种布料的安定整理方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010800841.6A CN114075789A (zh) 2020-08-11 2020-08-11 一种布料的安定整理方法

Publications (1)

Publication Number Publication Date
CN114075789A true CN114075789A (zh) 2022-02-22

Family

ID=80279756

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010800841.6A Pending CN114075789A (zh) 2020-08-11 2020-08-11 一种布料的安定整理方法

Country Status (1)

Country Link
CN (1) CN114075789A (zh)

Similar Documents

Publication Publication Date Title
CN102168385B (zh) 一种植物染料染壳聚糖面料的方法
CN104988713A (zh) 一种棉织物的高效染整工艺
CN106012538B (zh) 吸湿快干单向导湿双层面料的制作方法
CN105019250A (zh) 一种竹纤维织物的低温染整工艺
CN103541182A (zh) 一种氨纶包芯弹力织物的生产方法
CN107604692A (zh) 一种涤纶仿麂皮织物染整工艺
CN105063996A (zh) 一种桑蚕丝织物的环保型染整工艺
CN112301771A (zh) 提高纯棉针织物染色品质的连续印染加工方法
CN113882159B (zh) 一种高舒适汉麻织物前处理工艺
CN103290707B (zh) 玉米纤维织物的染整加工工艺
CN103614925B (zh) 一种健康环保面料的加工方法
CN102080330B (zh) 一种对纺织品织物及成衣进行超爽整理的方法
CN107022908A (zh) 一种棉布料的染色方法
CN109706754A (zh) 一种织物的活性染料无盐染色方法
CN105297419A (zh) 一种亚麻短纤维的染整加工方法
CN107988818A (zh) 一种棉、粘胶类纱线的染色工艺
CN114075789A (zh) 一种布料的安定整理方法
CN113529436A (zh) 一种纺织印染工艺
CN102797162A (zh) 一种纯棉织物的酶氧一浴前处理方法
CN1054663C (zh) 大麻、棉混纺纱毛巾及织前、织后的处理工艺
CN114075788A (zh) 一种布料的行走的荷尔蒙整理方法
CN114075790A (zh) 一种布料的燃脂整理方法
CN114214834A (zh) 一种含有柚子提取物纤维的制备方法
CN111979795B (zh) 一种使用植物染料对散纤维进行染色的方法
CN110565305B (zh) 一种牛仔面料的后处理工艺

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20220222