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1. (WO2017138928) METHOD FOR PRODUCING BLOWN FILM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/138928 International Application No.: PCT/US2016/017279
Publication Date: 17.08.2017 International Filing Date: 10.02.2016
IPC:
B29C 47/92 (2006.01) ,B29C 47/20 (2006.01) ,B29K 21/00 (2006.01)
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
47
Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
08
Component parts, details or accessories; Auxiliary operations
92
Measuring, controlling or regulating
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
47
Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
08
Component parts, details or accessories; Auxiliary operations
12
Extrusion nozzles or dies
20
with annular opening, e.g. for tubular articles
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
K
INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D103
21
Use of unspecified rubbers as moulding material
Applicants:
THE YOKOHAMA RUBBER CO., LTD. [JP/JP]; 36-11, Shimbashi 5-chome Minatok-ku, Tokyo, 105-8685, JP
EXXONMOBIL CHEMICAL PATENTS INC. [US/US]; 4500 Bayway Drive Baytown, TX 77520, US
Inventors:
TOMOI, Shusaku; JP
NADELLA, Hari, P.; US
Agent:
AMERNICK, Burton, A.; US
Priority Data:
Title (EN) METHOD FOR PRODUCING BLOWN FILM
(FR) PROCÉDÉ DE PRODUCTION D’UN FILM SOUFFLÉ
Abstract:
(EN) A process for producing a blown film from a thermoplastic elastomer composition comprising a thermoplastic resin and rubber particles dispersed therein by an inflation molding equipment is disclosed. The process comprises malting the thermoplastic elastomer composition to form a molten thermoplastic elastomer composition; extruding the molten thermoplastic elastomer composition from the annular discharge port of the annular die as a tubular film; and expanding the tubular film extruded from the annular discharge port to have a maximum diameter D2 (mm); wherein the outer diameter D1 of the annular discharge port; the maximum diameter D2 of the tubular film, the distance L2 in the extruding direction of the tubular film from, the annular discharge port of the annular die' to a position at which the tubular film has been expanded to have the maximum diameter D2, an intermediate diameter D3= (D1÷D2)/2, and the distance L3 in the extruding direction of the tubular film from the annular discharge port of the annular die: to a position at which the tubular film has been expanded to have the intermediate diameter D3 satisfy both relationships, of following formulas (1) and (2):
(FR) La présente invention concerne un procédé de production d’un film soufflé à partir d’une composition élastomère thermoplastique comprenant une résine thermoplastique et des particules de caoutchouc dispersées à l’intérieur grâce à un équipement de moulage par soufflage. Le procédé comprend la fusion de la composition élastomère thermoplastique pour former une composition élastomère thermoplastique fondue ; l’extrusion de la composition élastomère thermoplastique fondue à partir de l’orifice d’évacuation annulaire de la filière annulaire sous la forme d’un film tubulaire ; et l’expansion du film tubulaire extrudé depuis l’orifice d’évacuation annulaire pour atteindre un diamètre maximal D2 (mm) ; où le diamètre externe D1 de l’orifice d’évacuation annulaire ; le diamètre maximal D2 du film tubulaire, la distance L2 dans le sens de l’extrusion du film tubulaire depuis, l’orifice d’évacuation annulaire de la filière annulaire vers une position à laquelle le film tubulaire a été expansé pour présenter le diamètre maximal D2, un diamètre intermédiaire D3 = (D1÷D2)/2, et la distance L3 dans le sens de l’extrusion du film tubulaire depuis l’orifice d’évacuation annulaire de la filière annulaire : à une position à laquelle le film tubulaire a été expansé pour présenter le diamètre intermédiaire D3 satisfont les deux relations, des formules suivantes (1) et (2) :
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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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, 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 Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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)