Wrap Film With Polyisobutylene Succinic Anhydride

Patent metadata

Field	Value
Publication number	US-2021130516-A1
Application number	US-202017090293-A
Country	US
Kind code	A1
Filing date	Nov 5, 2020
Priority date	Nov 6, 2019
Publication date	May 6, 2021
Grant date	—

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).

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 suitable for cling wrapping with a cling force of at least about 40 g/in provided by an effective amount of PIBSA present in at least one surface of the film.

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

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

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

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

9 . The film of claim 8 , wherein the multilayer film includes at least three layers.

10 . The film of claim 9 , wherein the multilayer film structure includes between about 0.2% and about 2.0% PIBSA.

11 . 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.

12 . The thermoplastic film formulation of claim 11 , further comprising about 1% by weight antiblock concentrate.

13 . The thermoplastic film formulation of claim 11 , further comprising about 1% by weight process aid.

14 . 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.

15 . The thermoplastic film formulation of claim 14 , further comprising about 7% white UVI polythene masterbatch.

16 . The thermoplastic film formulation of claim 14 , further comprising at least about 76% by weight LLDPE.

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

• B32B27/32

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

• B29C48/0017

  combined with blow-moulding or thermoforming · CPC title