Patent · US Active

Laminated glazing with improved resistance to relatively discrete impact types

US12059869B2 · kind B2 · utility

0Cited by
2References
16Claims
0Family size

Assignee

Inventor

Key dates

Filing dateNov 18, 2020
Grant dateAug 13, 2024
Priority date—
Expiry dateAug 10, 2041

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB32B2605/18
  • WIPO fieldSurface technology, coating
  • WIPO sectorChemistry

Abstract

A laminated glazing includes a structural transparent substrate bonded to a glass sheet of 0.5 to 4 mm, intended to constitute an outer surface of the laminated glazing, by an adhesive interlayer of 4 to 10 mm, which successively includes 0.25 to 2.5 mm of a flexible first polymer material having a relaxation modulus at most equal to 2 GPa for relaxation times at least equal to 10 min, at temperatures at least equal to −40° C., in contact with the glass sheet, then a stiff second polymer material having a relaxation modulus at least equal to 4 GPa, for time constants at most equal to 0.1 millisecond and temperatures at most equal to 40° C.

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