Patent · US Active

Spunbonded laminate

US11999155B2 · kind B2 · utility

0Cited by

1References

16Claims

0Family size

Assignee

REIFENHÄUSER GMBH & CO. KG MASCHINENFABRIK · DE

Inventors

Tobias Wagner · Cologne, DE
Sebastian Sommer · Troisdorf, DE
Patrick Bohl · Petershohn, DE

Key dates

Filing date	Jan 31, 2022
Grant date	Jun 4, 2024
Priority date	—
Expiry date	Jan 31, 2042

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB32B2307/72
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A laminate has first and second spunbonded nonwoven layers at least one of which comprises or consists essentially of crimped continuous filaments that are bicomponent filaments having a first component based on polypropylene and a second component based on polypropylene. A specific density ρ (g/cm3) of the spunbonded nonwoven laminate depending on the surface density of the spunbonded nonwoven laminate lies below a density limit ρG defined by the following equation: ρG=9 cm−1×surface density g/cm2+0.0393 g/cm3.

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