Global patent index - EP 1005420 A1

EP 1005420 A1 2000-06-07 - 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

EP 1005420 A1 (EN)

Application

EP 98939044 A

Priority

  • TR 9800017 W
  • TR 9700780 A

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 (main, further and additional classification)

B32B 27/32; B29D 9/00; B32B 27/30; B65D 65/40

IPC 8 full level (invention and additional information)

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)

CPC (invention and additional information)

B32B 27/32 (2013.01); B29C 47/0021 (2013.01); B29C 55/143 (2013.01); B32B 27/18 (2013.01); B29C 47/00 (2013.01); B29K 2023/12 (2013.01); B29K 2995/0024 (2013.01); B29K 2995/0029 (2013.01); B29L 2009/00 (2013.01)

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

EPO simple patent family

WO 9907553 A1 19990218; WO 9907553 A9 19990610; AU 8755098 A 19990301; EP 1005420 A1 20000607; TR 200000421 T2 20010723; TR 9700780 A2 19990222; TR 9700780 A3 19990222

INPADOC legal status

2004-03-31 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030926

2003-07-02 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20030515

2000-06-07 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000304

2000-06-07 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-06-07 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: AL PAYMENT 20000304;LT PAYMENT 20000304;LV PAYMENT 20000304;MK PAYMENT 20000304;RO PAYMENT 20000304;SI PAYMENT 20000304