CN1211498A - Injection-foamed product and manufacturing method thereof - Google Patents
Injection-foamed product and manufacturing method thereof Download PDFInfo
- Publication number
- CN1211498A CN1211498A CN98105889A CN98105889A CN1211498A CN 1211498 A CN1211498 A CN 1211498A CN 98105889 A CN98105889 A CN 98105889A CN 98105889 A CN98105889 A CN 98105889A CN 1211498 A CN1211498 A CN 1211498A
- Authority
- CN
- China
- Prior art keywords
- auxiliary material
- injection
- major ingredient
- ingredient mixture
- material sheet
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
- B29D35/14—Multilayered parts
- B29D35/142—Soles
-
- 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
- B29C33/12—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels
- B29C33/14—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels against the mould wall
-
- 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
- B29C44/1233—Joining preformed parts by the expanding material the preformed parts being supported during expanding
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing atoms other than carbon or hydrogen
- C08L23/0853—Ethene vinyl acetate copolymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/08—Copolymers of ethylene
- B29K2023/083—EVA, i.e. ethylene vinyl acetate copolymer
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Molding Of Porous Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Peptides Or Proteins (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
An injection-foamed product having a different material portion and a manufacturing method thereof. The method comprises steps of preparing a main material mixture, preforming an auxiliary material piece having a property different from a property of the main material mixture, forming an auxiliary cavity region in a cavity of a mold for injection-foaming, placing the auxiliary material piece in the auxiliary cavity region, filling up the main material mixture in the cavity, maintaining the main material mixture and the auxiliary material piece in the cavity under a predetermined temperature and pressure for a predetermined time, and opening the mold to obtain the injection-foamed product. Accordingly, injection-foamed products having various properties such as color, density and hardness can be easily and efficiently obtained.
Description
The present invention relates to a kind of injection-foamed product and production method thereof that contains the different materials part.
A kind of injection-molded foam method comprises following steps: with a kind of resin compound such as ethene-vinyl acetate copolymer (EVA) and a kind of foaming agent, be filled in the die cavity of required form in the mold, with about 6-10 minute the mixture in this die cavity is maintained about 170 ℃-190 ℃, open mold then and obtain an injection-foamed product, because the expansion of the bubbling gas that is produced in the foaming agent, make this injection-foamed product expand 30% or expand greatlyyer with respect to the size of die cavity.The injection-molded foam method that has recently developed is still not in vogue, yet, because this injection-molded foam method can fast, easily obtain having the froth pulp of difformity and feature, so its application is expected to obtain wide spread.
This injection-foamed product can be used to do shoes effectively, especially for some position of sport footwear, as at the bottom of the middle level and outer bottom.Recently, a kind of complete sole grows up with the form of injection-foamed product.
In traditional sport footwear, outer field rubber-sole is connected under foamed material such as the formed middle level of polyurethane on the surface, as United States Patent (USP) 4,245, in 406 disclosed like that.Yet therefore above-mentioned injection-molded foam method can reduce the weight of product with synthetic complete a slice at the bottom of the outer end and the middle level, boosts productivity, and its result reduces manufacturing cost.
But in the injection-molded foam method, because its material is to be injected in the die cavity of mold with fluid state, and go through the product of cross-linking reaction in the given time, and this fluent material must be uniform with the acquisition injection-molded foam.Therefore, the characteristic of this product such as color, density with and hardness always single.Further, the foam material of this injection mo(u)lding is not so good as the material or the rubber of injection moulding significantly aspect resistance to wearing.In these areas, if this injection-molded foam method can provide a kind of injection-molded foam shaped article, part obtains different colours, density or hardness thereby this product has at least a different materials, and so this method will be by preferably.
The purpose of this invention is to provide a kind of injection-foamed product and production method thereof that contains the different materials part.
In order to achieve the above object, this paper provides a kind of production to have the method for the injection-foamed product of different materials part, and it comprises such step: prepare a kind of main material mixture that comprises a kind of main resin and a kind of foaming agent; Prefabricated a kind of auxiliary material sheet wherein contains and a kind ofly can crosslinked assisted resin take place with main resin, and has the characteristic that is different from the main material mixture; For injection-molded foam forms the auxiliary material mould cavity area in the die cavity of mold; The auxiliary material sheet is positioned over the auxiliary material mould cavity area; With fluid state major ingredient is filled in the die cavity; Major ingredient mixture in the die cavity and auxiliary material sheet are lasted till a scheduled time under predetermined temperature and pressure, open mold and obtain injection-foamed product.
Preferably major ingredient material mixture and auxiliary material sheet contain same resin and in that both have a kind of differing from one another at least its aspect pigment, the density and hardness.Above-mentioned same resin is preferably EVA.
At this, this auxiliary material sheet can also contain foaming agent, this auxiliary material sheet be lower than under the nucleation temperature of foaming agent pre-formed.
In order to achieve the above object, also provide a kind of injection-molded foam shaped article of producing according to following method that contains the different materials part at this: prepare a kind of major ingredient mixture that contains main resin and foaming agent; Prefabricated a kind of contain can with the assisted resin of main resin crosslinks, and have a kind of auxiliary material sheet that is different from main material mixture character; In the die cavity of mold, form the auxiliary material mould cavity area; The auxiliary material sheet is put into the auxiliary material mould cavity area; With fluid state the major ingredient mixture is filled in the die cavity; Under predetermined temperature and pressure, make major ingredient mixture and auxiliary material sheet in the die cavity last till a scheduled time; Open mold and obtain injection-foamed product.
By detailed description, make purpose of the invention described above and advantage incite somebody to action apparent with reference to accompanying drawing to the preferred embodiments of the present invention.In accompanying drawing of the present invention:
Fig. 1 has shown that the injection-foamed product of the gained according to the present invention is applied to the sole perspective view in the footwear;
Fig. 2 has shown among Fig. 1 the cutaway view along II-II line;
Fig. 3 has shown according to the present invention for the mold profile of injection-foamed product production method is described;
Fig. 4 has shown a counterdie plane among Fig. 3;
Fig. 5 has shown the cutaway view of mold among Fig. 3 to Fig. 7, is used to go on to say method of the present invention.
According to Fig. 1 and Fig. 2, sport footwear has an application of the injection-foamed product of different materials part for the present invention, with at the bottom of the middle level with moulding respectively and the conventional motion footwear at the skin end compare, its sole 1 has a complete profile.
Sole 1 comprises the first and second auxiliary material parts 3 and 4 that account for sole 1 most main material part 2 and account for the part of sole 1 lower surface, main material part 2 and first, second auxiliary material part 3 and 4 contain a kind of resin material that can be cross-linked with each other under predetermined condition, preferred resin material is identical each other, preferred polyurethane methyl esters, polystyrene, EVA, among PVC and the TPR (thermoplastic rubber) one, particularly EVA can be used as resin material herein.
What Fig. 3 showed is mold 10 profiles that form the sole 1 with auxiliary material part 3 and 4.Fig. 4 is the plane of counterdie among Fig. 3.At this, for convenience of description, to compare with footwear among Fig. 1, die cavity 13 shapes that form in the mold 10 are simplified.
With reference to Fig. 3 and Fig. 4, in the die cavity 13 of counterdie 12, the first and second auxiliary material mould cavity areas 15 and 17 have been formed, be used for first and second auxiliary material parts 3 and 4 in the moulding sole 1, auxiliary material mould cavity area 15 and 17 is spaced apart wall 16 and 18 respectively and separates, this spaced walls projects upwards with respect to the bottom of remaining mould cavity area from die cavity 13, major ingredient runner 21 forms on counterdie 12 and major ingredient inlet 20 is connected with inner die cavity 13, makes to be injected into 20 the major ingredient of entering the mouth and can to flow in the die cavity 13 by major ingredient runner 21.
With reference to Fig. 5～Fig. 7 in detail, the production method of the sole 1 with different materials part will be described hereinafter.
At first, prepare the major ingredient mixture in major ingredient zone 2, contain a kind of resin and a kind of foaming agent as main component in the major ingredient mixture, resin can be selected a kind of from the polyurethane methyl esters among polystyrene EVC, PVC and the TPR.
The auxiliary material sheet that is used for auxiliary material part 3 and 4 is made solid state in advance, the auxiliary material sheet contains a kind of resin as main component, it can be easily crosslinked with the resin generation of major ingredient part, can be preferably and the identical resin of major ingredient part resin, especially, EVA is most preferred, and it is as the main component in major ingredient mixture and the auxiliary material sheet.
Material in the auxiliary material sheet can comprise a kind of foaming agent, in this case, the forming temperature of auxiliary material sheet will be lower than the active temperature that foaming agent bubbles with the major ingredient mixture in the die cavity 13 of mold 10, so that foam with the major ingredient mixture in the die cavity 13 of mold 10.The major ingredient mixture is being different from the auxiliary material sheet aspect the kind of the content of contained blowing agent or additive, makes the auxiliary material of producing sole 1 partly have density, hardness or the color different with the major ingredient part.
Remove and open under the state of die cavity 13 from counterdie 12 at patrix 14, prefabricated auxiliary material sheet 3a that is used for the first and second auxiliary material parts 3 and 4 and 4a are placed on the first and second auxiliary material mould cavity areas 15 and 17 respectively, then, patrix 14 descends and closes die cavity 13, as shown in Figure 5.After having closed the die cavity 13 of counterdie 12 with patrix 14, the major ingredient mixture injects die cavity 13 by major ingredient runner 21, with its filling, as shown in Figure 6.
Major ingredient mixture in the die cavity and auxiliary material sheet 3a, 4a one coexist and kept 6-10 minute under about 170-190 ℃ the temperature, the major ingredient mixture is at internal crosslinking, and, auxiliary material sheet 3a that contacts with the major ingredient mixture and the border surface of 4a are activated, in major ingredient mixture and border surface generation cross-linking reaction, and make major ingredient and auxiliary material sheet 3a and 4a be combined into an integral body.
After preset time, open die cavity 13 by type of drive rising patrix 14, at this moment, the all-in-one-piece material is owing to expand rapidly from the expansion of the bubbling gas of foaming agent in this material, and the formation sole 1 as shown in Figure 7 that from die cavity 13, spins off, the sole 1 of institute's moulding obtains finished product through a dressing process thus.1 comprises major ingredient part 2 and first, second auxiliary material part 3 and 4 at the bottom of this product shoes, because the different choice of the composition of auxiliary material sheet 3a, 4a, above-mentioned two parts auxiliary material is differing from each other aspect color, density or hardness.
As mentioned above, in accordance with the present production process, the injection-foamed product with different piece of various features such as color, density and hardness can obtain in a mold easily and efficiently.
Claims (5)
1. production method with injection-foamed product of different materials part comprises following steps:
Preparation comprises a kind of major ingredient mixture of a kind of main resin and a kind of foaming agent;
Be prefabricated into and contain a kind of a kind of auxiliary material sheet that can have with the assisted resin of described main resin crosslinks with described major ingredient mixture different characteristics;
Form the auxiliary material mould cavity area at a mold die cavity that is used for injection-molded foam;
Described auxiliary material sheet is put into described auxiliary material mould cavity area;
With fluid state described major ingredient mixture is filled in the described die cavity;
Major ingredient mixture and the auxiliary material sheet kept in the described die cavity continue a scheduled time under predetermined temperature and pressure; With
Open described mold and obtain injection-foamed product.
2. the method described in claim 1, wherein said major ingredient mixture have identical resin with the auxiliary material sheet and in color, density and hardness, have at least a kind of both differ from one another.
3. method as claimed in claim 2, wherein said same resin is EVA.
4. method as claimed in claim 3, wherein said auxiliary material sheet further contain foaming agent and are being lower than prefabricated forming under the nucleation temperature of described foaming agent.
5. the injection-foamed product that a following method according to claim 1 is produced with different materials part:
Prepare a kind of major ingredient mixture that contains a kind of main resin and a kind of foaming agent;
Being prefabricated into a kind of containing a kind ofly can and have the auxiliary material sheet that is different from described major ingredient mixture characteristics with the assisted resin of described main resin crosslinks;
Be formed with the auxiliary material mould cavity area at a mold die cavity that is used for injection-molded foam;
Described auxiliary material sheet is put into described auxiliary material mould cavity area;
With fluid state described major ingredient mixture is filled in the described die cavity;
Major ingredient mixture and the auxiliary material sheet kept in the described die cavity continue a scheduled time under predetermined temperature and pressure; With
Open described mold and obtain injection-foamed product.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR43010/97 | 1997-08-29 | ||
| KR1019970043010A KR100256180B1 (en) | 1997-08-29 | 1997-08-29 | Injection foaming product and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1211498A true CN1211498A (en) | 1999-03-24 |
Family
ID=19519520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98105889A Pending CN1211498A (en) | 1997-08-29 | 1998-03-26 | Injection-foamed product and manufacturing method thereof |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JP3083800B2 (en) |
| KR (1) | KR100256180B1 (en) |
| CN (1) | CN1211498A (en) |
| BR (1) | BR9800935A (en) |
| CA (1) | CA2233054A1 (en) |
| DE (1) | DE19812694A1 (en) |
| ES (1) | ES2164499B1 (en) |
| ID (1) | ID20771A (en) |
| IT (1) | ITTO980257A1 (en) |
| TW (1) | TW424038B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101602242A (en) * | 2004-12-01 | 2009-12-16 | 日东电工株式会社 | Foam filling member |
| CN102173074A (en) * | 2011-01-21 | 2011-09-07 | 许建华 | Novel sole production method |
| CN106163312A (en) * | 2014-04-14 | 2016-11-23 | 耐克创新有限合伙公司 | Manufacture the method for the sole assembly being formed by multiple preformed members |
| CN110216851A (en) * | 2018-03-02 | 2019-09-10 | 彰洋材料股份有限公司 | Transformation projects mould, projects footwear material and its manufacturing method |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020073125A (en) * | 2002-09-05 | 2002-09-19 | 이동락 | manufacturing method and mould for the shoe-sole which has different colors or hardness |
| KR100662548B1 (en) * | 2005-11-02 | 2006-12-28 | 박장원 | Injection Molding Method |
| WO2007066899A1 (en) * | 2005-11-02 | 2007-06-14 | Jang Won Park | Injection molding process |
| KR100689964B1 (en) | 2006-06-21 | 2007-03-08 | 박장원 | Foam manufacturing method |
| ES2361315B1 (en) * | 2009-06-18 | 2012-04-20 | Vulcanizados Argus, S.L | METHOD OF MANUFACTURE OF A BASE-FLOOR ASSEMBLY FOR FOOTWEAR AND BASE-FLOOR ASSEMBLY MANUFACTURED WITH SUCH METHOD. |
| KR101338482B1 (en) * | 2011-11-07 | 2013-12-10 | 동신산업(주) | Method for Preparing Buoy Member Using EPP and Buoy Member Thereof |
| CN103009553A (en) * | 2012-12-13 | 2013-04-03 | 德尔惠(中国)有限公司 | Manufacturing process of double-color double-density soles |
| US10172415B2 (en) | 2014-04-14 | 2019-01-08 | Nike, Inc. | Sole assembly formed from multiple preforms and method and mold for manufacturing same |
| CN105291351A (en) * | 2015-11-14 | 2016-02-03 | 重庆跃发日用品有限公司 | Arranging structure for hard spheres, for massaging slipper sole, in manufacturing die |
| CN105459327A (en) * | 2015-11-14 | 2016-04-06 | 重庆跃发日用品有限公司 | Production method for massaging slipper soles |
| CN105291350A (en) * | 2015-11-14 | 2016-02-03 | 重庆跃发日用品有限公司 | Arranging method for arranging hard balls in protrusions of massaging slipper sole |
| CN105291377A (en) * | 2015-11-14 | 2016-02-03 | 重庆跃发日用品有限公司 | Manufacturing die of massaging slipper soles |
| IT201900012519A1 (en) * | 2019-07-22 | 2021-01-22 | Nea Srl | "Mold for the application of a leather template in the tread of an elastomeric hull of an après-ski and its manufacturing process" |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4245406A (en) * | 1979-05-03 | 1981-01-20 | Brookfield Athletic Shoe Company, Inc. | Athletic shoe |
| DE69018263T2 (en) * | 1990-11-10 | 1995-08-03 | Yang Kuo Nan | Process for the production of EVA shoe insoles. |
| JP2589650B2 (en) * | 1993-11-27 | 1997-03-12 | 株式会社アサヒコーポレーション | Molding method of foam polyurethane sole |
| US5453230A (en) * | 1993-12-02 | 1995-09-26 | Urethane Technologies, Inc. | Method for rotationally molding an article with a vulnerable insert |
| JP2764198B2 (en) * | 1994-01-29 | 1998-06-11 | 株式会社アサヒコーポレーション | Forming method for foam soles |
| CA2148646C (en) * | 1994-06-14 | 2005-06-14 | Dezi Anthony Krajcir | Resilient molded shoe heels |
| JPH0857985A (en) * | 1994-08-23 | 1996-03-05 | Moon Star Co | Manufacture of injection molded shoe |
-
1997
- 1997-08-29 KR KR1019970043010A patent/KR100256180B1/en not_active IP Right Cessation
- 1997-12-29 JP JP09369633A patent/JP3083800B2/en not_active Expired - Fee Related
-
1998
- 1998-03-23 DE DE19812694A patent/DE19812694A1/en not_active Ceased
- 1998-03-23 TW TW087104281A patent/TW424038B/en not_active IP Right Cessation
- 1998-03-24 CA CA002233054A patent/CA2233054A1/en not_active Abandoned
- 1998-03-24 IT IT98TO000257A patent/ITTO980257A1/en unknown
- 1998-03-24 ID IDP980420A patent/ID20771A/en unknown
- 1998-03-26 CN CN98105889A patent/CN1211498A/en active Pending
- 1998-03-27 ES ES009800657A patent/ES2164499B1/en not_active Expired - Lifetime
- 1998-03-31 BR BR9800935-4A patent/BR9800935A/en not_active Application Discontinuation
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101602242A (en) * | 2004-12-01 | 2009-12-16 | 日东电工株式会社 | Foam filling member |
| CN101602242B (en) * | 2004-12-01 | 2013-03-27 | 日东电工株式会社 | Foam filling member |
| CN102173074A (en) * | 2011-01-21 | 2011-09-07 | 许建华 | Novel sole production method |
| CN102173074B (en) * | 2011-01-21 | 2016-06-08 | 许建华 | A kind of production method of sole |
| CN106163312A (en) * | 2014-04-14 | 2016-11-23 | 耐克创新有限合伙公司 | Manufacture the method for the sole assembly being formed by multiple preformed members |
| CN106163312B (en) * | 2014-04-14 | 2019-12-03 | 耐克创新有限合伙公司 | The method for manufacturing the sole assembly formed by multiple preformed members |
| CN110216851A (en) * | 2018-03-02 | 2019-09-10 | 彰洋材料股份有限公司 | Transformation projects mould, projects footwear material and its manufacturing method |
| CN110216851B (en) * | 2018-03-02 | 2021-12-31 | 彰洋材料股份有限公司 | Variable-pressure injection mold, injection shoe material and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2233054A1 (en) | 1999-02-28 |
| KR100256180B1 (en) | 2000-05-15 |
| ES2164499A1 (en) | 2002-02-16 |
| ID20771A (en) | 1999-03-04 |
| JP3083800B2 (en) | 2000-09-04 |
| KR19990019616A (en) | 1999-03-15 |
| BR9800935A (en) | 2000-05-23 |
| ITTO980257A1 (en) | 1999-09-24 |
| DE19812694A1 (en) | 1999-03-04 |
| ES2164499B1 (en) | 2003-05-16 |
| TW424038B (en) | 2001-03-01 |
| JPH1177745A (en) | 1999-03-23 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |