Patent · US Expired

Soft loop laminate and method of making

US5888607A · kind A · utility

114Cited by

17References

40Claims

0Family size

Assignee

Minnesota Mining and Manufacturing Company · US

Inventors

Jayshree Seth · Woodbury, US
John J. Rogers · Windom, US

Key dates

Filing date	Jul 3, 1997
Grant date	Mar 30, 1999
Priority date	—
Expiry date	Jul 3, 2017

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24025
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

There is provided a soft nonwoven fibrous loop material for use in hook and loop fastening systems. The nonwoven fibrous loop material of the invention contains an open fibrous loop layer comprised predominately of polypropylene polymer, copolymer or blend fibers. The nonwoven fibrous loop layer material is autogeneously bonded to a backing layer formed of polypropylene polymers or copolymers having a percent isotacticity of less than 70%, optionally with additional layers present provided so that the overall nonwoven fibrous loop material is a laminate having a circular bend stiffness of less than about 9 Newton and having tensile strength of at least 1500 g/2.54 cm-width.

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