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1. (WO2019067275) METHOD OF MAKING A UNITARY BRUSH HEAD AND UNITARY TOOTHBRUSH HEAD
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Pub. No.: WO/2019/067275 International Application No.: PCT/US2018/051644
Publication Date: 04.04.2019 International Filing Date: 19.09.2018
IPC:
A46B 1/00 (2006.01) ,A46B 3/00 (2006.01) ,A46B 3/04 (2006.01) ,A46B 9/04 (2006.01) ,B29C 45/26 (2006.01) ,B29C 45/56 (2006.01) ,B29C 43/00 (2006.01)
A HUMAN NECESSITIES
46
BRUSHWARE
B
BRUSHES
1
Brush bodies and bristles moulded as a unit
A HUMAN NECESSITIES
46
BRUSHWARE
B
BRUSHES
3
Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
A HUMAN NECESSITIES
46
BRUSHWARE
B
BRUSHES
3
Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
04
by mouldable materials, e.g. metals, cellulose derivatives, plastics
A HUMAN NECESSITIES
46
BRUSHWARE
B
BRUSHES
9
Arrangements of the bristles in the brush body
02
Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
04
for toothbrushes
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17
Component parts, details or accessories; Auxiliary operations
26
Moulds
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17
Component parts, details or accessories; Auxiliary operations
46
Means for plasticising or homogenising the moulding material or forcing it into the mould
56
using mould parts movable during or after injection, e.g. injection-compression moulding
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
43
Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
Applicants:
THE PROCTER & GAMBLE COMPANY [US/US]; One Procter & Gamble Plaza Cincinnati, Ohio 45202, US
Inventors:
GÖRICH, Gerald; DE
SCHNIZER, Harald; DE
GÖTZ, Nicolas; DE
EIMANN, Klaus; DE
Agent:
KREBS, Jay A.; US
Priority Data:
17193708.928.09.2017EP
Title (EN) METHOD OF MAKING A UNITARY BRUSH HEAD AND UNITARY TOOTHBRUSH HEAD
(FR) PROCÉDÉ DE FABRICATION D'UNE TÊTE DE BROSSE UNITAIRE ET TÊTE DE BROSSE À DENTS UNITAIRE
Abstract:
(EN) The present application is concerned with a method of manufacturing a unitary brush head, in particular a unitary toothbrush head, the unitary brush head having a base and at least one filament extending from a filament side of the base, the method comprising the steps of injecting molten plastic material into a mold cavity having a pre-base cavity and at least one filament cavity extending from the pre-base cavity, compressing the molten plastic material once it is essentially filling the pre-base cavity by impressing at least one punching tool into the molten plastic material from the rear side of the pre-base cavity being opposite to a side from which the at least one filament cavity extends, and filling the at least one filament cavity with the molten plastic material under the continuous impression of the punching tool. The molten plastic material in particular has a melt flow rate of about 30 g/10 min or lower measured in accordance with ISO 1133. The present invention is also concerned with a brush having a unitary brush head.
(FR) Procédé de fabrication d'une tête de brosse unitaire, en particulier de'une tête de brosse à dents unitaire, la tête de brosse unitaire comportant une base et au moins un filament s'étendant à partir d'un côté filament de la base, le procédé comprenant les étapes consistant à injecter une matière plastique fondue dans une cavité de moule ayant une cavité de pré-base et au moins une cavité de filament s'étendant à partir de la cavité de pré-base, à comprimer la matière plastique fondue une fois qu'elle remplit essentiellement la cavité de pré-base par impression d'au moins un outil de poinçonnage dans la matière plastique fondue à partir du côté arrière de la cavité de pré-base opposée à un côté à partir duquel s'étend la ou les cavités de filament, et à remplir la ou les cavités de filament avec la matière plastique fondue sous impression continue de l'outil de poinçonnage. La matière plastique fondue présente en particulier un indice de fluidité d'environ 30 g/10 min ou moins mesuré conformément à la norme ISO 1133. La présente invention concerne également une brosse comportant une tête de brosse unitaire.
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Designated States: 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
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)