Wrap film with polyisobutylene succinic anhydride

Patent metadata

Field	Value
Publication number	US-12344685-B2
Application number	US-202217988245-A
Country	US
Kind code	B2
Filing date	Nov 16, 2022
Priority date	Nov 6, 2019
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

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 suitable for cling wrapping with a cling force of at least about 30 grams-force per inch width as measured by ASTM D5458.

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 cling force is less than about 1,000 grams-force per inch width.

5. The film of claim 4 , wherein the cling force is between about 40 grams-force per inch width and about 500 grams-force per inch width.

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

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

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

9. The film of claim 1 , wherein the film includes less than about 5% by weight PIBSA.

10. The film of claim 1 , wherein the film is a multilayer film.

11. The film of claim 10 , wherein the multilayer film includes at least three layers.

12. The film of claim 10 , wherein the multilayer film structure includes between about 0.2% and about 2.0% PIBSA.

Assignees

• Berry Global Inc

Inventors

• Tukachinsky Alexander

Classifications

• C08F255/10

  on to butene polymers · CPC title

• C08F222/04

  Anhydrides, e.g. cyclic anhydrides · CPC title

• C08L23/22

  Copolymers of isobutene; Butyl rubber; Homopolymers or copolymers of other iso-olefins · CPC title

• B29C48/0017

  combined with blow-moulding or thermoforming · CPC title

• B32B27/32

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