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1. (WO2019066732) A METHOD FOR MOLD-FREE MANUFACTURING OF NATURAL RUBBER ARTICLES
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№ de pub.: WO/2019/066732 № do pedido internacional: PCT/TH2018/000040
Data de publicação: 04.04.2019 Data de depósito internacional: 07.09.2018
CIP:
B29C 64/124 (2017.01) ,B29C 64/135 (2017.01) ,B29C 35/00 (2006.01) ,B33Y 30/00 (2015.01)
[IPC code unknown for B29C 64/124][IPC code unknown for B29C 64/135]
B OPERAÇÕES DE PROCESSAMENTO; TRANSPORTE
29
PROCESSAMENTO DE MATÉRIAS PLÁSTICAS; PROCESSAMENTO DE SUBSTÂNCIAS EM ESTADO PLÁSTICO EM GERAL
C
MODELAGEM OU UNIÃO DE MATÉRIAS PLÁSTICAS; MODELAGEM DE SUBSTÂNCIAS EM ESTADO PLÁSTICO, EM GERAL; PÓS-TRATAMENTO DE PRODUTOS MODELADOS, p. ex.,REPARO
35
Aquecimento, resfriamento ou cura, p. ex., reticulação, vulcanização; Aparelhos para esse fim
[IPC code unknown for B33Y 30]
Requerentes:
NATIONAL SCIENCE AND TECHNOLOGY DEVELOPMENT AGENCY [TH/TH]; 111 Thailand Science Park, Phahonyothin Road, Klong 1, Klong Luang, Pathumthani, 12120, TH
Inventores:
WIROONPOCHIT, Panithi; TH
SRISAWADI, Sasitorn; TH
DOKKHAN, Sopita; TH
MUNNAE, Jomkwun; TH
LAPAPONG, Sittikorn; TH
LOYKULNANT, Surapich; TH
NAEWNGERNDEE, Rattanasuda; TH
UTRA, Kittaporn; TH
Mandatário:
RUANGSIN, Ratchada; 111 Thailand Science Park, Phahonyothin Road, Khlong 1, Khlong Luang, Pathumthani, 12120, TH
Dados da prioridade:
170100576628.09.2017TH
180100321701.06.2018TH
180100321801.06.2018TH
Título (EN) A METHOD FOR MOLD-FREE MANUFACTURING OF NATURAL RUBBER ARTICLES
(FR) PROCÉDÉ POUR LA FABRICATION D'ARTICLES EN CAOUTCHOUC NATUREL SANS MOULE
Resumo:
(EN) This invention relates to the method for mold-free manufacturing of natural rubber articles. Specifically, the articles can be fabricated in the stereolithography process which eliminates the need of mold making and reduces the process time significantly. The method comprises the steps of (1) preparing prevulcanized latex compound for sulfur and non-sulfur vulcanization; (2) adding processing aid to make the latex compound curable when exposed to laser irradiation, the processing aid includes heat-sensitive polymer and/or carbon material(s); and (3) fabricating of three-dimensional rubber articles by stereolithography process. The process are capable of fabricating complex shapes and internal features. As the said rubber articles contain more than 95% of natural rubber, they are highly flexible and can be translucent in some embodiments.
(FR) La présente invention concerne un procédé pour la fabrication d'articles en caoutchouc naturel sans moule. Plus précisément, les articles peuvent être fabriqués par un processus de stéréolithographie qui élimine le besoin de fabrication de moule et réduit considérablement le temps de traitement. Le procédé comprend les étapes consistant à (1) préparer un mélange de latex prévulcanisé pour la vulcanisation avec du soufre et sans soufre ; (2) ajouter un adjuvant de fabrication pour rendre le mélange de latex durcissable lorsqu'il est exposé à un rayonnement laser, l'adjuvant de fabrication comprenant un polymère thermosensible et/ou une ou plusieurs matières carbonées ; et (3) fabriquer des articles tridimensionnels en caoutchouc par un processus de stéréolithographie. Le procédé permet de fabriquer des formes complexes et des éléments caractéristiques internes. Étant donné que lesdits articles en caoutchouc contiennent plus de 95 % de caoutchouc naturel, ils sont hautement flexibles et peuvent être translucides dans certains modes de réalisation.
Estados designados: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
Organização Regional Africana da Propriedade Intelectual (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Instituto Eurasiático de Patentes (AM, AZ, BY, KG, KZ, RU, TJ, TM)
Instituto Europeu de Patentes (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
Organização Africana da Propriedade Intelectual (OAPI) (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Língua de publicação: inglês (EN)
Língua de depósito: inglês (EN)