IP Library › Granted Patent US 11,511,528
Granted Patent B2
US 11,511,528 · App. 16/705,474 · Granted Nov 29, 2022

Multilayer cling film and box

Inventor: Dimitris Ginosatis (Koropi Attica, GR)
Assignee: FLEXOPACK S.A.
B32B27/08B32B7/12B32B27/306B32B27/32B65D77/00B65D77/02B65D85/67B65D85/672B32B2250/05
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Quick Facts
Patent No.
US 11,511,528
App. No.
16/705,474
Granted
Nov 29, 2022
Kind
B2
Abstract

A plastic film for cling film application packed in a box, and a box including such a film, are described. The cling film includes a polyolefin such as low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), metallocene LLDPE, polyolefin plastomer, ethylene vinyl acetate (EVA), ethylene methyl acrylate (EMA), ethylene butyl acrylate (EBA), polypropylene (PP), cyclic olefin copolymer, or combinations thereof; and a polymer with a Young's modulus higher than 500 MPa selected from ethylene vinyl alcohol (EVOH), polyamide, polyester, cyclic olefin copolymer, polypropylene and polylactide (PLA), or combinations thereof. The film includes an inner layer and an outer layer, wherein the outer layer is free of polypropylene. The film is packed in a box which does not include any cutting unit. The film is configured to be manually cut by a user without using any cutting unit.

Claims (23)

1. A plastic film for cling film application, comprising a polyolefin and a polymer with Young's modulus higher than 500 MPa, wherein the film is packed in a box which does not comprise any cutting unit, wherein the film comprises an inner layer and an outer layer, wherein the outer layer is free of polypropylene;

wherein the polymer with Young's modulus higher than 500 MPa is selected from the group consisting of ethylene vinyl alcohol (EVOH), polyamide, polyester, cyclic olefin copolymer, polypropylene, polylactide (PLA), and combinations thereof;

wherein the polyolefin is selected from the group consisting of low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), metallocene LLDPE, polyolefin plastomer, ethylene vinyl acetate (EVA), ethylene methyl acrylate (EMA), ethylene butyl acrylate (EBA), polypropylene (PP), cyclic olefin copolymer, and combinations thereof; and

wherein the film is configured to be manually cut by a user without using any cutting unit.

2. The plastic film according to claim 1 , wherein the film has a thickness of less than 25 microns.

3. The plastic film according to claim 2 , wherein the film has a thickness of less than 20 microns.

4. The plastic film according to claim 2 , wherein the film has a thickness of less than 18 microns.

5. The plastic film according to claim 2 , wherein the film has a thickness of less than 17 microns.

6. The plastic film according to claim 2 , wherein the film has a thickness of less than 15 microns.

7. The plastic film according to claim 1 , wherein the film is wound up on a reel.

8. The plastic film according to claim 7 , wherein the reel is made of paper or plastic.

9. A box which does not comprise any cutting unit, comprising a plastic film for cling film application, said plastic film comprising a polyolefin and a polymer with Young's modulus higher than 500 MPa, wherein the film comprises an inner layer and an outer layer, wherein the outer layer is free of polypropylene;

wherein the polymer with Young's modulus higher than 500 MPa is selected from the group consisting of ethylene vinyl alcohol (EVOH), polyamide, polyester, cyclic olefin copolymer, polypropylene, polylactide (PLA), and combinations thereof;

wherein the polyolefin is selected from the group consisting of low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), metallocene LLDPE, polyolefin plastomer, ethylene vinyl acetate (EVA), ethylene methyl acrylate (EMA), ethylene butyl acrylate (EBA), polypropylene (PP), cyclic olefin copolymer, and combinations thereof; and

wherein the film is configured to be manually cut by a user without using any cutting unit.

10. A method of packing a film, the method comprising providing a film comprising a polyolefin and a polymer with Young's modulus higher than 500 MPa, and packing the film into a box, wherein the film comprises an inner layer and an outer layer, wherein the outer layer is free of polypropylene;

wherein the polymer with Young's modulus higher than 500 MPa is selected from the group consisting of ethylene vinyl alcohol (EVOH), polyamide, polyester, cyclic olefin copolymer, polypropylene, polylactide (PLA), and combinations thereof; and

wherein the polyolefin is selected from the group consisting of low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), metallocene LLDPE, polyolefin plastomer, ethylene vinyl acetate (EVA), ethylene methyl acrylate (EMA), ethylene butyl acrylate (EBA), polypropylene (PP), cyclic olefin copolymer, and combinations thereof; and

wherein the film is configured to be manually cut by a user without using any cutting unit.

11. A method of storing a film in a box, the method comprising providing a film comprising a polyolefin and a polymer with Young's modulus higher than 500 MPa; and storing the film in a box, wherein the film comprises an inner layer and an outer layer, wherein the outer layer is free of polypropylene;

wherein the polymer with Young's modulus higher than 500 MPa is selected from the group consisting of ethylene vinyl alcohol (EVOH), polyamide, polyester, cyclic olefin copolymer, polypropylene, polylactide (PLA), and combinations thereof; and

wherein the polyolefin is selected from the group consisting of low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), metallocene LLDPE, polyolefin plastomer, ethylene vinyl acetate (EVA), ethylene methyl acrylate (EMA), ethylene butyl acrylate (EBA), polypropylene (PP), cyclic olefin copolymer, and combinations thereof; and

wherein the film is configured to be manually cut by a user without using any cutting unit.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 26, 2020
From: GINOSATIS, DIMITRIS
To: FLEXOPACK S.A.
Reel/Frame 052239/0040 →
Priority Claims (1)
EP 18210821 · Dec 6, 2018 · regional
Continuity (1)
Related Publication 20200180284A1 · Jun 11, 2020
Cited By (1)
US 12,472,734