公开(公告)号：US12290974B2

公开(公告)日：2025-05-06

申请号：US17285218

申请日：2019-10-17

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Ling Fan ,  Hongtao Shi ,  Maria Soliman ,  Shan Qin ,  Shengming Cui ,  Priya Garg ,  Jacobus Christinus Josephus Franciscus Tacx

IPC: B29C48/21 ,  B29C48/00 ,  B29C48/08 ,  B29K23/00

Abstract: The present invention related to a film comprising multiple co-extruded film layers, the film having a length and a width, and a thickness defined as the dimension of the film perpendicular to the plane defined by the length and the width, wherein the film is a bi-axially oriented film comprising at least a core layer A, having a first and a second surface, and one or two sealing layer(s) B, wherein the core layer A comprises a polypropylene, and wherein the sealing layer B comprises >50.0 wt % of a polyethylene comprising moieties derived from ethylene and moieties derived from an α-olefin comprising 4 to 10 carbon atoms, the polyethylene having a density of ≥870 and ≤920 kg/m3 as determined in accordance with ASTM D1505 (2010), with regard to the total weight of the sealing layer B, wherein the sealing layer B directly adheres to one of the first or second surface of the core layer A. Such film allows for the production of a sealed package having a sufficiently high sealing strength at reduced sealing temperatures, also referred to as the seal initiation temperature.

公开(公告)号：US12157781B2

公开(公告)日：2024-12-03

申请号：US17287685

申请日：2019-10-29

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Jacobus Christinus Josephus Franciscus Tacx ,  Diego Mauricio Castaneda Zuniga ,  Peter Neuteboom

IPC: C08F210/02

Abstract: The invention relates to a process for the preparation of low density polyethylene (LDPE) wherein the polymerisation takes place in a tubular reactor at peak temperatures ranging from 180° C. to 350° C. and at pressures ranging from 150 to 350 MPa and wherein the total effective length of the polymerisation reactor divided by the number of reaction zones is in the range from 230 to 350 m.

公开(公告)号：US10526476B2

公开(公告)日：2020-01-07

申请号：US15561680

申请日：2016-03-10

Applicant: SABIC Global Technologies B.V.

Inventor： Jacobus Christinus Josephus Franciscus Tacx ,  Franciscus Petrus Hermanus Schreurs ,  Diego Mauricio Castaneda Zuniga

IPC: C08L23/04 ,  C08F110/02 ,  C09D123/06

Abstract: The invention relates to a high-pressure polymerisation process for the preparation of polyethylene. A polymer is added to the extruder via a side feed dosage unit wherein the MFIsf of the polymer added via the side feed dosage unit has a higher value than the melt flow index (MFLend) of the polyethylene end product and wherein the Mw/Mn of the end product increases at least 15% compared to the product wherein no polymer is dosed via the side feed.

公开(公告)号：US20180079896A1

公开(公告)日：2018-03-22

申请号：US15561680

申请日：2016-03-10

Applicant: SABIC Global Technologies B.V.

Inventor： Jacobus Christinus Josephus Franciscus Tacx ,  Franciscus Petrus Hermanus Schreurs ,  Diego Mauricio Castaneda Zuniga

IPC: C08L23/04 ,  C08F110/02 ,  C09D123/06

CPC classification number: C08L23/04 ,  C08F110/02 ,  C08L2205/025 ,  C08L2207/066 ,  C09D123/06

Abstract: The invention relates to a high-pressure polymerisation process for the preparation of polyethylene. A polymer is added to the extruder via a side feed dosage unit wherein the MFIsf of the polymer added via the side feed dosage unit has a higher value than the melt flow index (MFLend) of the polyethylene end product and wherein the Mw/Mn of the end product increases at least 15% compared to the product wherein no polymer is dosed via the side feed.