Patent · US Active

Multilayer polyolefin greenhouse films with high transparency

US11319419B2 · kind B2 · utility

0Cited by

11References

13Claims

0Family size

Assignee

DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

Yong Chen · Longbeilingcun, CN
Xiaobing Yun · Shanghai, CN
Libo Du · Shanghai, CN

Key dates

Filing date	May 11, 2017
Grant date	May 3, 2022
Priority date	—
Expiry date	Jan 13, 2038

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02A40/25
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A multilayer film (10) having excellent mechanical strength and transparency comprise a core layer (12), at least two skin layers, and at least two sub-skin layers disposed between the core layer (12) and the two skin layers. The core layer (12) comprises at least 60 wt. % linear low density polyethylene (LLDPE). The sub-skin layers comprise at least 60 wt. % low density polyethylene (LDPE). The skin layers comprise at least 80 wt. % of LLDPE wherein the LLDPE comprises C6 LLDPE, C8 LLDPE, or combinations thereof, and each skin layer has a thickness of less than 25% of the overall thickness of the multilayer film (10). The multilayer film (10) comprises at least 0.1 wt. % ultraviolet stabilizer.

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