US2022267577A1PendingUtilityA1

Polyethylene composition and film having a good permeability, stiffness and sealability

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Assignee: NOVA CHEM INT SAPriority: Jul 11, 2018Filed: May 12, 2022Published: Aug 25, 2022
Est. expiryJul 11, 2038(~12 yrs left)· nominal 20-yr term from priority
Inventors:Xiaochuan WangPeter ZoricakBrian MolloyQinyan WangLawrence VanasseldonkNorman Aubee
C08L 2205/025C08L 23/0807C08F 4/65908C08J 2423/06C08J 5/18C08L 2314/06C08F 210/16C08L 23/06C08J 2323/08C08L 2205/03C08L 23/0815C08J 2423/08C08F 2500/05C08F 2420/04C08L 23/08C08F 4/65912C08L 2203/162C08J 2323/06C08F 110/02C08L 2308/00C08F 2500/10C08F 210/14C08L 2314/02
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Claims

Abstract

A polyethylene composition which when made into a film layer having a thickness of about 1 mil exhibits a machine direction (MD) 1% secant modulus of ≥190 MPa and an oxygen transmission rate (OTR) of ≥650 cm3 per 100 inch2 per day, and when made into a film layer having a thickness of about 2 mil exhibits a seal initiation temperature (SIT) of ≤100° C. and an area of hot tack window (AHTW) of ≥160 Newtons·° C.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A polyethylene composition which when made into a film layer having a thickness of about 1 mil exhibits a machine direction (MD) 1% secant modulus of ≥190 MPa and an oxygen transmission rate (OTR) of ≥650 cm 3  per 100 inch 2  per day, and when made into a film layer having a thickness of about 2 mil exhibits a seal initiation temperature (SIT) of ≤100° C. and an area of hot tack window (AHTW) of ≥160 Newtons·° C. 
     
     
         2 . The polyethylene composition of  claim 1 , which when made into a film layer having a thickness of about 1 mil has a machine direction (MD) 1% secant modulus of ≥200 MPa. 
     
     
         3 . The polyethylene composition of  claim 1 , which when made into a film layer having a thickness of about 1 mil has a machine direction (MD) 1% secant modulus of ≥210 MPa. 
     
     
         4 . The polyethylene composition of  claim 1 , which when made into a film layer having a thickness of about of about 1 mil has an oxygen transmission rate (OTR) of ≥700 cm3 per 100 inch 2  per day. 
     
     
         5 . The polyethylene composition of  claim 1 , which when made into a film layer having a thickness of about of about 1 mil has an oxygen transmission rate (OTR) of ≥740 cm3 per 100 inch 2  per day. 
     
     
         6 . The polyethylene composition of  claim 1 , which when made into a film layer having a thickness of about of about 1 mil has an oxygen transmission rate (OTR) of ≥800 cm3 per 100 inch 2  per day. 
     
     
         7 . The polyethylene composition of  claim 1 , which when made into a film layer having a thickness of about of about 2 mil has a seal initiation temperature (SIT) of ≤95° C. 
     
     
         8 . The polyethylene composition of  claim 1 , which when made into a film layer having a thickness of about of about 2 mil has a seal initiation temperature (SIT) of ≤90° C. 
     
     
         9 . The polyethylene composition of  claim 1 , which when made into a film layer having a thickness of about of about 2 mil has a seal initiation temperature (SIT) of ≤85° C. 
     
     
         10 . The polyethylene composition of  claim 1 , which when made into a film layer having a thickness of about of about 2 mil has an area of hot tack window (AHTW) of ≥170 Newtons·° C. 
     
     
         11 . The polyethylene composition of  claim 1 , which when made into a film layer having a thickness of about of about 2 mil has an area of hot tack window (AHTW) of ≥180 Newtons·° C.

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