Patent · US Active

Cover film, method of making cover film, and method of using cover film for enclosing compressed material

US10870264B2 · kind B2 · utility

0Cited by

1References

23Claims

0Family size

Assignee

RKW Agri GmbH & Co. KG · DE

Inventors

Jurgen Piazzi · Michelstadt, DE
Jan Philip Eubeler · Großkarlbach, DE
Thomas Steffen · Xenia, US
Benjamin Kuhlmann · Northeim, DE

Key dates

Filing date	May 31, 2017
Grant date	Dec 22, 2020
Priority date	—
Expiry date	Jun 26, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2207/066
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A cover film for the compressing of bales, characterized in that the cover film has been stretched and comprises an inner layer (1) and outer layers (2), wherein the inner layer (1) of the film comprises a copolymer of an ethylene and an α-olefin, wherein the α-olefin is selected from the group consisting of 1-butene, 1-hexene, 1-heptene, and 1-octene, and is used for copolymerization with the ethylene, wherein the copolymer is present in an amount of more than 5% by weight and less than 50% by weight of the inner layer (1) of the film, wherein the inner layer (1) further comprises a linear polyethylene, and wherein the outer layers (2) of the film fail to comprise any significant proportion of the copolymer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.