公开(公告)号：US20170335078A1

公开(公告)日：2017-11-23

申请号：US15534729

申请日：2015-12-09

Applicant: BOREALIS AG

Inventor： Johan DEFOER ,  Willem DE WEVER ,  Sara CROONEN

IPC: C08J5/18 ,  B29C71/04 ,  B29C41/00 ,  B29C47/00 ,  C08L23/14 ,  B29L7/00 ,  B29K23/00 ,  B29L23/00

CPC classification number: C08J5/18 ,  B29C41/003 ,  B29C48/0018 ,  B29C48/022 ,  B29C48/10 ,  B29C71/04 ,  B29K2023/12 ,  B29L2007/008 ,  B29L2023/001 ,  C08J2323/14 ,  C08J2423/08 ,  C08L23/14 ,  C08L2203/16 ,  C08L2205/02 ,  C08L23/0807

Abstract: Polypropylene mono-layer films produced with blown film or cast film technology comprising a blend of: a) 75.0 to 98.0 wt %, based on the blend, of a random propylene copolymer and b) 2.0 to 15.0 wt %, based on the blend, of an ethylene based plastomer having a density according to ISO 1183D of 0.915 g/cm3 or below and an MFR2 according to ISO 1133 (190° C.; 2.16 kg) in the range of 2.0 to 30 g/10 min, wherein the film has simultaneously improved optic properties as well as tear resistance compared to random propylene copolymer based films without ethylene based plastomer.

公开(公告)号：US20170342247A1

公开(公告)日：2017-11-30

申请号：US15535148

申请日：2015-12-09

Applicant: BOREALIS AG

Inventor： Johan DEFOER ,  Willem DE WEVER ,  Sara CROONEN

IPC: C08L23/14 ,  C08J5/18 ,  B65D65/40 ,  B29K23/00 ,  B29C47/00 ,  B29K105/00

CPC classification number: C08L23/14 ,  B29C48/022 ,  B29C48/08 ,  B29K2023/12 ,  B29K2105/0085 ,  B65D65/40 ,  C08J5/18 ,  C08J2323/14 ,  C08J2423/08 ,  C08L23/12 ,  C08L2203/10 ,  C08L2203/162 ,  C08L2205/02 ,  C08L2207/02 ,  C08L23/16

Abstract: The present invention relates to a polymer blend and the film of the polymer blend or the film layers of the polymer blend as a surface layer or coating. More particularly, the invention relates to a polymer blend which may be extruded as such or extruded onto one or both sides of packaging film to give a sealing surface(s) which exhibits surprisingly heat sealability suitable for form-fill-and-seal-packaging. The present invention also relates the use of ethylene based plastomer to reduce sealability of films comprising polypropylene.

公开(公告)号：US20170342246A1

公开(公告)日：2017-11-30

申请号：US15535143

申请日：2015-12-09

Applicant: BOREALIS AG

Inventor： Johan DEFOER ,  Willem DE WEVER ,  Sara CROONEN

IPC: C08L23/14 ,  C08L23/12 ,  C08J5/18

CPC classification number: C08L23/14 ,  C08J5/18 ,  C08J2323/12 ,  C08J2323/14 ,  C08J2423/08 ,  C08L23/12 ,  C08L23/142 ,  C08L2203/10 ,  C08L2203/16 ,  C08L2203/162 ,  C08L2205/02 ,  C08L2207/02 ,  C08L23/16

Abstract: The patent application discloses a polypropylene-plastomer-blend comprising ethylene-based plastomer, which—after conversion into final articles and exposing to surface modification like corona treatment, shows improved dyne retention behaviour and improved dyne retention ratio over time. Further disclosed are final articles and a process how to provide compositions and final articles having improved dyne retention behaviour.