EP 1005420 A1 20000607 - BIAXIALLY ORIENTED POLYPROPYLENE BASED MATTE-TRANSLUCENT MULTILAYER FILMS, PROCESS FOR THEIR PRODUCTION AND THE USE THEREOF
Title (en)
BIAXIALLY ORIENTED POLYPROPYLENE BASED MATTE-TRANSLUCENT MULTILAYER FILMS, PROCESS FOR THEIR PRODUCTION AND THE USE THEREOF
Title (de)
MATTE, DURCHSCHEINENDE, BIAXIAL ORIENTIERTE POLYPROPYLEN- MEHRSCHICHTFOLIEN, VERFAHREN ZU IHRER HERSTELLUNG UND IHRE VERWENDUNG
Title (fr)
FEUILS MULTICOUCHES MATS TRANSLUCIDES A BASE DE POLYPROPYLENE PRESENTANT UNE ORIENTATION BIAXIALE, LEUR PROCEDE DE PREPARATION ET LEUR UTILISATION
Publication
Application
Priority
- TR 9800017 W 19980810
- TR 9700780 A 19970811
Abstract (en)
[origin: WO9907553A1] Biaxially oriented multilayer matte-translucent film useful for photographic paper laminations, reproduction pictures and menu coatings, conventional lamination purposes, hygienic applications, health care products, food stuffs packaging, cosmetics and picture frames, high speed packaging machines, and as matte tape base films, and for general packaging and overwappring applications, comprising 15-50 mu m</=5 layers from (A) 1.5-3.0 mu m skin matte-translucent layer containing ethylene(E)-propylene(P)-butylene(B) terpolymer with E-unit content of 1.5-4,9 % and B-unit content of 5,5-15 % polypropylene, high density polyethylene (HDPE) and/or 10:(0.5-1.5) mixture or blend of HDPE with polymethyl(metha)acrylates, alternating or random copolymer of vinyl monomer (styrene, alkyl(metha)acrylates, etc.) or alpha -olefins (C2-10) with anydrides or esters of unsaturated mono- or dicarbonic acids as matting agent, synthetic silica as an antiblocking agent, erucicamide as a slip agent and allyl phosphite (APH) as antioxidant, calcium stearate as a neutralizer, and tetrakis [methylene(3,5-di-tert-butyl-4hydroxy-hydro-cinnamate] methane as a stabilizer, (B) >/=0.5 mu m polypropylene inner layer containing said APH antioxidant, stabilizer, neutralizer and/or slip agent, and/or >/=1.5 mu m inner layer with composition as a (A) matte layer (C) 10-46 mu m virgin or marked polypropylene core layer containing 5-cholesten-3 beta -ol as a marked agent, saids APH antioxidant, stabilizer and neutralizer, and/or said slip agent and ethoxylated amine as an antistatic agent, (D) >/=1.5 mu m poilypropylene inner layer containing said APH antioxidant, stabilizer and neutralizer, and (E) >/=0.5 mu m outer shining layer containing polypropylene, said antiblocking agent, APH antioxidant and neutralizer, and/or >/=1.5 mu m outer matte layer with composition as a (A) layer, were prepared by using the tandem extruder system supplied with three or four satellite co-extruders, flat die, chill roll, and recycling line. After biaxially stretching and air corona discharged in the given conditions matte-translucent film has sheen (angle 85 DEG ) of 10-15 (skin matte side) and 42-61 (outer shining side), longitudinal shrinkage of >/=0.5 % at 90 DEG C, and >/=2.5 % at 120 DEG C and transverse shrinkage of DOLLAR m/G)0.25 % at 90 DEG C, and >/=1.5 % at 120 DEG C for a period at 15 min, excellent matte appearance, surface tension of 40-41 mN/m (after storage for 6 months), high dimensional stability, and low heat sealing temperature of </=110 DEG C.
IPC 1-7
IPC 8 full level
B29C 48/08 (2019.01); B29C 55/14 (2006.01); B32B 27/18 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B65D 65/40 (2006.01); B29C 47/00 (2006.01); B29C 48/00 (2019.01)
CPC (source: EP US)
B29C 48/08 (2019.01 - EP); B29C 55/143 (2013.01 - EP); B32B 27/08 (2013.01 - US); B32B 27/18 (2013.01 - EP US); B32B 27/308 (2013.01 - US); B32B 27/32 (2013.01 - EP US); B29C 48/00 (2019.01 - EP); B29K 2023/12 (2013.01 - EP); B29K 2995/0024 (2013.01 - EP); B29K 2995/0029 (2013.01 - EP); B29L 2009/00 (2013.01 - EP); B32B 2250/05 (2013.01 - US); B32B 2250/242 (2013.01 - US); B32B 2270/00 (2013.01 - US); B32B 2307/31 (2013.01 - US); B32B 2307/414 (2013.01 - US); B32B 2307/518 (2013.01 - US); B32B 2309/02 (2013.01 - US); B32B 2309/105 (2013.01 - US); B32B 2323/043 (2013.01 - US); B32B 2333/12 (2013.01 - US)
Citation (search report)
See references of WO 9907553A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9907553 A1 19990218; WO 9907553 A9 19990610; AU 8755098 A 19990301; EP 1005420 A1 20000607; TR 199700780 A2 19990222; TR 199700780 A3 19990222; TR 200000421 T2 20010723
DOCDB simple family (application)
TR 9800017 W 19980810; AU 8755098 A 19980810; EP 98939044 A 19980810; TR 200000421 T 19980810; TR 9700780 A 19970811