CN1597294A - Manufacturing method of automobile inner decorative article - Google Patents

Manufacturing method of automobile inner decorative article Download PDF

Info

Publication number
CN1597294A
CN1597294A CN 200410021577 CN200410021577A CN1597294A CN 1597294 A CN1597294 A CN 1597294A CN 200410021577 CN200410021577 CN 200410021577 CN 200410021577 A CN200410021577 A CN 200410021577A CN 1597294 A CN1597294 A CN 1597294A
Authority
CN
China
Prior art keywords
exemplar
mould
take out
silicon rubber
steering wheel
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
CN 200410021577
Other languages
Chinese (zh)
Inventor
周克正
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN 200410021577 priority Critical patent/CN1597294A/en
Publication of CN1597294A publication Critical patent/CN1597294A/en
Priority to PCT/CN2005/001095 priority patent/WO2006010321A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/14—Dipping a core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
    • B29C33/3857—Manufacturing moulds, e.g. shaping the mould surface by machining by making impressions of one or more parts of models, e.g. shaped articles and including possible subsequent assembly of the parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1228—Joining preformed parts by the expanding material
    • B29C44/1242—Joining preformed parts by the expanding material the preformed parts being concentric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
    • B29C44/146—Shaping the lining before foaming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/18—Filling preformed cavities
    • B29C44/181—Filling unsupported soft shells having a particular shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/40—Plastics, e.g. foam or rubber
    • B29C33/405—Elastomers, e.g. rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3047—Steering wheels

Abstract

A technology for preparing the internal decorative member of car, such as the one for steering wheel, includes such steps as preparing a stearing wheel from silica rubber, immersing in water polyurethane paint, heating to 150 deg.C for solidifying, immersing again, solidifying to obtain the external layer, turning it over, sleeve on skeleton, putting in mould, filling the foaming PU, solidifying, and demoulding.

Description

A kind of manufacture method of automotive upholstery
One, technical field:
The present invention proposes a kind of manufacture method of automotive upholstery, prepares the method for inside gadgets such as vehicle steering, seat cushion, handrail, headrest specifically.
Two, background technology:
At present, as the manufacture method of vehicle steering, mainly be with PU from the skinning material, the foam-in-mould moulding, high-grade vehicle steering coats corium again behind foaming.Foam-in-mould is manufactured steering wheel needs to take out of with discharging method mould inside in process air, the appearance that makes it goods not only has gate vestiges, also the steam vent vestige will be arranged, and overflows burr outside die joint, after deburring, stay sharp trace, had a strong impact on the presentation quality of goods.Material that the more important thing is discharge reclaims difficulty, forms a large amount of rubbish, contaminated environment, wastage of material, production cost height; Coat corium handwork, efficient is low, costs an arm and a leg.Before cast, must spray releasing agent in addition, pollute to working environment in cavity surface.
Three, technology contents:
The objective of the invention is to solve the problem and shortage that exists with background technology, is the method that there is the automotive upholstery that corium state or synthetic leather coat the outside of foamed state and propose a kind of inside.
Technical scheme I of the present invention
At first, make one with silicon rubber as required and have inverse textured steering wheel exemplar, be called master mold, be placed on and make it to rotate even dipping in the hopper that aqueous polyurethane coating is housed, take out then and heat to 150 ℃, make liquid coating be semi-cured state, and then put into hopper dipping, curing reaches the PU thickness that overlays on master mold exemplar top layer and peels crust about 1mm once more, turn over and make texture outside, be enclosed within and together be placed on the frame of handwheel in the mould, facing to the inside filling-foam PU material of the cast gate that is located at the goods shelter, solidify the back die sinking and take out finished product toward crust with PU foaming casting machine.
Technical scheme II of the present invention
With the steering wheel exemplar, be placed on than this steering wheel periphery to go out greatly in the resin die external mold of 4mm, under vacuum state, in the 4mm space of exemplar and mould, pour into a mould silicon rubber, treat to take out after 24 hours the exemplar that is surrounded by silicon rubber, the accurate cutting of inner ring at the steering wheel exemplar peels the silicon rubber crust, be enclosed within as internal mold and put into external mold on the frame of handwheel together, the dual-component polyurethane metering is injected the internal mold of mould with polyurethane elastomer casting machine by the cast gate that is located at the goods shelter, then mould is fixed on the special-purpose framework that can make its low speed rotation, make polyurethane evenly be covered with the internal mold surface, treat together to take out together with skeleton after two component PU reactions are solidified, be placed in the mould and expect with the inside filling-foam PU of PU foaming casting machine, solidify the back and take out finished product toward crust by hidden cast gate.
The present invention compares with background technology, the gadget of processing without discharge, without exhaust, no gate vestiges does not have the die joint vestige yet, because the master mold emulation that silicon rubber is made is splendid, so the presentation quality of goods can compare favourably with the corium goods; The mould usable resins is watered injection molding, needn't be with traditional metal die, and the process-cycle reduces by 2/3, and cost is 20% of a conventional metals mould.
Four, the specific embodiment
Embodiment 1
Manufacture automotive upholstery: steering wheel.Adopt silicon rubber to manufacture one as required and have the inverse textured steering wheel exemplar of corium, it is master mold: choice direction dish exemplar, inwardly wrap on the exemplar with the corium texture, be fixed on the framework that can produce low speed rotation, brush the PU elastomer to 5mm curing, side accurately together peels it together with corium after the cutting within it, is contained in then in the resin mold, choose poultry and solidified the back taking-up through 24 hours toward its inner injection silicon rubber with the large size syringe needle, master mold.
Apparatus for production line on the master mold is put into the stainless steel hopper that aqueous polyurethane coating is housed, make its low speed rotation of 5 rev/mins, evenly flood the steering wheel exemplar, it is master mold, take out then, enter heating cabinet, heat to 150 ℃, 15 minutes, make it liquid coating and be semi-cured state, the exemplar skin depth reaches about 1.5mm, can enter again in the aqueous polyurethane hopper and flood, take out solidify once more, heat 15 minutes 150 ℃, its PU thickness that is coated on the exemplar (master mold) is stabilized in about 1.5mm, with specific purpose tool accurately cutting peel crust, turn over make inner face texture outwardly, become the overcoat of the typing of emulation skin, be enclosed within again and put into mould on the frame of handwheel together, by being located at the cast gate in goods shelter,, inject filling-foam PU material toward the inside of crust with the PU casting machine that foams, wait to solidify the back die sinking and take out finished product, both be the steering wheel of emulation skin state.
Embodiment 2
Choice direction dish exemplar, putting into the resin die that goes out 4mm greatly than this steering wheel periphery is external mold, put into the casing that vacuumizes, under the state of vacuum, in the space of the 4mm of exemplar and mould, pour into a mould silicon rubber, treat to take out after 24 hours the exemplar that is surrounded by silicon rubber, inboard accurately cutting at the steering wheel exemplar, peel the silicon rubber crust as internal mold, be enclosed within on the frame of handwheel, be placed in the external mold, by being located at the cast gate in goods shelter, with polyurethane elastomer casting machine dual-component polyurethane is measured the internal mold that injects mould according to the product structure size, mould is fixed on the special-purpose framework that can make its low speed rotation, makes polyurethane be covered with the internal mold surface uniformly, two component PU reactions are solidified the back and are together taken out together with skeleton, be placed in the mould and expect with the inside filling-foam PU of PU foaming casting machine, wait to solidify the back and take out finished product toward crust by hidden cast gate.
, can manufacture equally with identical principle method as backrest, handrail, seat cushion, headrest and car door interior lining panel etc. automotive upholstery by above-mentioned technology, the method for its handrail and seat cushion also can be used for furniture industry.

Claims (3)

1. the manufacture method of an automotive upholstery, it is characterized in that: 1. have inverse textured steering wheel exemplar (title master mold) with the silicon rubber making, 2. the hopper of putting into aqueous polyurethane coating evenly floods its low speed rotation, 3. from hopper, take out and put into heating box, heat to 150 ℃, kept about 15 minutes, make liquid coating be semi-cured state, 4. putting into hopper once more floods, 5. take out and put into heating box, it is qualified that the PU thickness that is coated on master mold exemplar top layer after the curing reaches 1.5mm, 6. peels crust then, and turning over makes texture outwards be enclosed within on the frame of handwheel, put into mould together, 7. fill PU material by the goods cast gate to the inside of crust with PU foaming casting machine, finished product is taken out in die sinking after solidifying.
2. method according to claim 1, it is characterized in that the steering wheel exemplar is the master mold processing method: choice direction dish exemplar inwardly wraps on the exemplar fixing with the texture of corium, be put into again on the framework of low speed rotation, brush the PU elastomer to 5mm, after the curing within it side accurately cut, connect its corium then and together peel, be placed in the resin mold, select for use the large size syringe needle to its inner injection silicon rubber, solidify after 24 hours take out master mold.
3. method according to claim 1, it is characterized in that: 1. the steering wheel exemplar is placed on than this steering wheel periphery to go out greatly in the resin die of 4mm, 2. under vacuum state, in the 4mm space of exemplar and mould, pour into a mould silicon rubber, 3. treat to take out after 24 hours the exemplar that is surrounded by silicon rubber, inner ring at exemplar is accurately cut off the silicon rubber crust, 4. be enclosed within as internal mold and put into external mold on the frame of handwheel together, 5. use polyurethane elastomer casting machine, the dual-component polyurethane metering is injected the internal mold of mould facing to the cast gate of goods, the sealing cast gate, 6. mould is fixed on the special-purpose framework that can make its low speed rotation, make polyurethane evenly be covered with the internal mold surface, 7. treat together to take out together with skeleton after two component PU reactions are solidified, 8. be placed in the mould,, 9. wait to solidify the back and take out finished product facing to the inside filling-foam PU material of cast gate with PU foaming casting machine toward crust.
CN 200410021577 2004-07-29 2004-07-29 Manufacturing method of automobile inner decorative article Pending CN1597294A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN 200410021577 CN1597294A (en) 2004-07-29 2004-07-29 Manufacturing method of automobile inner decorative article
PCT/CN2005/001095 WO2006010321A1 (en) 2004-07-29 2005-07-21 A method of manufacturing automotive interior parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200410021577 CN1597294A (en) 2004-07-29 2004-07-29 Manufacturing method of automobile inner decorative article

Publications (1)

Publication Number Publication Date
CN1597294A true CN1597294A (en) 2005-03-23

Family

ID=34663367

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200410021577 Pending CN1597294A (en) 2004-07-29 2004-07-29 Manufacturing method of automobile inner decorative article

Country Status (2)

Country Link
CN (1) CN1597294A (en)
WO (1) WO2006010321A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101875375A (en) * 2010-05-17 2010-11-03 褚桂明 Heating and disassembling technology of foaming (PU, Polyurethane) and sewn cover (LW) car steering wheel by using vapor method
CN101885138A (en) * 2010-05-17 2010-11-17 褚桂明 Technology for disassembling foaming (PU) position of automobile steering wheel by water heating method
CN102399444A (en) * 2010-09-17 2012-04-04 比亚迪股份有限公司 Method for preparing fine texture mold
CN103306584A (en) * 2013-07-01 2013-09-18 柳州裕信方盛汽车饰件有限公司 Surface imitation leather process for intermediate decorative plate of automobile door plate
CN103568189A (en) * 2012-08-03 2014-02-12 大众汽车有限公司 Method used for manufacturing composite molding piece with foam liner
CN104018359A (en) * 2014-05-30 2014-09-03 昆山阿基里斯人造皮有限公司 Surface self-extinction artificial leather material
CN102239036B (en) * 2008-12-03 2014-09-10 日产自动车株式会社 Apparatus for producing foam-molded member having skin, method for producing foam-molded member having skin, and foam-molded member having skin
CN105082440A (en) * 2014-04-15 2015-11-25 何宇 Steering wheel sleeve manufacturing method
CN108340541A (en) * 2017-12-26 2018-07-31 模德模具(东莞)有限公司 RPP automobile interior exteriors adorn plastic part quick molding method
CN108859553A (en) * 2018-07-24 2018-11-23 长春富维安道拓汽车饰件系统有限公司 A kind of engraving process for automobile corium inside gadget
CN114274540A (en) * 2021-12-20 2022-04-05 连云港冠泰汽车配件有限公司 Silicone rubber foam material and preparation method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111761851B (en) * 2020-06-30 2022-07-26 扬州哈工科创机器人研究院有限公司 Connecting process for appearance composite material of electronic mechanical animal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5060569A (en) * 1973-09-27 1975-05-24
JPS63137820A (en) * 1986-11-29 1988-06-09 Toyoda Gosei Co Ltd Manufacture of steering wheel made of urethane
JPH03126512A (en) * 1989-10-12 1991-05-29 Toyoda Gosei Co Ltd Manufacture for urethane foam product
IT1237285B (en) * 1989-11-22 1993-05-27 Gallino Componenti Plastici PROCEDURE FOR THE MANUFACTURE BY PLASTIC MOLDING OF A MOTOR VEHICLE STEERING WHEEL, WITH THE APPEARANCE OF A STEERING WHEEL COVERED IN NATURAL LEATHER, AND STEERING WHEEL OBTAINED THROUGH SUCH PROCEDURE
CN1200323A (en) * 1997-05-22 1998-12-02 锦江市森和科技发展公司 mfg. method of mould casting products made of polyurethane

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9156226B2 (en) 2008-12-03 2015-10-13 Nissan Motor Co., Ltd. Production apparatus of skin-fitted foam molding member, production method of skin-fitted foam molding member, and skin-fitted foam molding member
US9427931B2 (en) 2008-12-03 2016-08-30 Nissan Motor Co., Ltd. Production apparatus of skin-fitted foam molding member, production method of skin-fitted foam molding member, and skin-fitted foam molding member
CN102239036B (en) * 2008-12-03 2014-09-10 日产自动车株式会社 Apparatus for producing foam-molded member having skin, method for producing foam-molded member having skin, and foam-molded member having skin
CN101885138A (en) * 2010-05-17 2010-11-17 褚桂明 Technology for disassembling foaming (PU) position of automobile steering wheel by water heating method
CN101885138B (en) * 2010-05-17 2012-05-02 褚桂明 Technology for disassembling foaming (PU) position of automobile steering wheel by water heating method
CN101875375A (en) * 2010-05-17 2010-11-03 褚桂明 Heating and disassembling technology of foaming (PU, Polyurethane) and sewn cover (LW) car steering wheel by using vapor method
CN102399444A (en) * 2010-09-17 2012-04-04 比亚迪股份有限公司 Method for preparing fine texture mold
CN102399444B (en) * 2010-09-17 2014-11-26 比亚迪精密制造有限公司 Method for preparing fine texture mold
CN103568189A (en) * 2012-08-03 2014-02-12 大众汽车有限公司 Method used for manufacturing composite molding piece with foam liner
CN103306584A (en) * 2013-07-01 2013-09-18 柳州裕信方盛汽车饰件有限公司 Surface imitation leather process for intermediate decorative plate of automobile door plate
CN103306584B (en) * 2013-07-01 2015-04-22 柳州裕信方盛汽车饰件有限公司 Surface imitation leather process for intermediate decorative plate of automobile door plate
CN105082440A (en) * 2014-04-15 2015-11-25 何宇 Steering wheel sleeve manufacturing method
CN104018359B (en) * 2014-05-30 2015-04-29 昆山阿基里斯人造皮有限公司 Surface self-extinction artificial leather material
CN104018359A (en) * 2014-05-30 2014-09-03 昆山阿基里斯人造皮有限公司 Surface self-extinction artificial leather material
CN108340541A (en) * 2017-12-26 2018-07-31 模德模具(东莞)有限公司 RPP automobile interior exteriors adorn plastic part quick molding method
CN108859553A (en) * 2018-07-24 2018-11-23 长春富维安道拓汽车饰件系统有限公司 A kind of engraving process for automobile corium inside gadget
CN114274540A (en) * 2021-12-20 2022-04-05 连云港冠泰汽车配件有限公司 Silicone rubber foam material and preparation method thereof
CN114274540B (en) * 2021-12-20 2023-03-07 连云港冠泰汽车配件有限公司 Silicone rubber foam material and preparation method thereof

Also Published As

Publication number Publication date
WO2006010321A1 (en) 2006-02-02

Similar Documents

Publication Publication Date Title
WO2006010321A1 (en) A method of manufacturing automotive interior parts
CA2423602C (en) Method and mould for manufacturing a moulded article comprising at least an elastomeric polyurethane skin
US6849218B1 (en) Method for manufacturing a multi-layered molded synthetic part and thus obtained part
JP4856746B2 (en) Manufacturing method of steering wheel for automobile
US20140103561A1 (en) Method for molding composite material
WO1983003792A1 (en) A mould part and a method in its manufacture and use
CN102848510A (en) Method for manufacturing model by using polyurethane material
CN201785332U (en) Long glassfiber reinforced polyurethane product structure capable of manufacturing A-class surface product
CN105383071A (en) Manufacturing and forming process for automobile bumper
CN104129024A (en) Method for making bicycle saddle
CN107599433A (en) A kind of in-mould injection and foaming cladding integral process
CN113276326A (en) Skin forming process and interior skin
CN102501505A (en) Compound type automobile interior trim and preparation method thereof
CN101787201A (en) Novel long glass fiber-reinforced polyurethane technique capable of being produced into A-class surface product
CN101618735B (en) Method for manufacturing car body side wall of concept sample car
KR20020065463A (en) The manufacturing process of steering wheel for woodgrain
US20040262805A1 (en) Leather stylized steering wheel
CN214395484U (en) A spout gluey frock for car handrail cladding veneer epidermis
US20040191477A1 (en) Method of making an interior trim part and article made by the process
CN209920392U (en) Cotton intelligent foaming production line of seat design
CN202518335U (en) Automobile steering wheel
JP3573013B2 (en) Manufacturing method of molded products
CN107953502A (en) A kind of automobile engine cover laminated foam and preparation method thereof
JP3573019B2 (en) Manufacturing method of urethane molded product
JPH06293031A (en) Manufacture of foam molded form for automotive interior-finishing

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication