Wrap film with polyisobutylene succinic anhydride

Patent metadata

Field	Value
Publication number	US-11530282-B2
Application number	US-202017090293-A
Country	US
Kind code	B2
Filing date	Nov 5, 2020
Priority date	Nov 6, 2019
Publication date	Dec 20, 2022
Grant date	Dec 20, 2022

Abstract

A thermoplastic wrap film including polyisobutylene succinic anhydride (PIBSA) is disclosed herein.

First claim

I claim:

1. A thermoplastic film, comprising:
about 0.2% to about 10% by weight polyisobutylene succinic anhydride (PIBSA);
wherein the film is a multilayer film; and
wherein the multilayer film includes at least three layers.

2. The film of claim 1 , wherein the film comprises at least one of a polyethylene and a polypropylene.

3. The film of claim 2 , wherein the film comprises at least 80% polyethylene, polypropylene, or blends thereof.

4. The film of claim 1 , wherein the film is produced by blown extrusion.

5. The film of claim 1 , wherein the film is produced by cast extrusion.

6. The film of claim 1 , wherein the film includes between about 1% and about 12% PIBSA.

7. The film of claim 1 , wherein the multilayer film structure includes between about 0.2% and about 2.0% PIBSA.

8. A thermoplastic film formulation, comprising:
about 55% by weight linear low density polyethylene (LLDPE),
about 38% by weight low density polyethylene (LDPE), and
about 5% by weight PIBSA.

9. The thermoplastic film formulation of claim 8 , further comprising about 1% by weight antiblock concentrate.

10. The thermoplastic film formulation of claim 8 , further comprising about 1% by weight process aid.

11. A thermoplastic film formulation, comprising:
at least about 66% by weight LLDPE;
at least about 12% by weight LDPE; and
at least about 5% by weight PIBSA.

12. The thermoplastic film formulation of claim 11 , further comprising about 7% white UVI polythene masterbatch.

13. The thermoplastic film formulation of claim 11 , further comprising at least about 76% by weight LLDPE.

Assignees

• Berry Global Inc

Inventors

• Tukachinsky Alexander

Classifications

• C08J5/18 Primary

  Manufacture of films or sheets · CPC title

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title

• C08L23/06

  Polyethylene · CPC title

• C08L23/12

  Polypropene · CPC title

• C08L2207/066

  LDPE (radical process) · CPC title