Strength loss indicator for synthetic yarns

Details Strength loss indicator for synthetic yarns Strength loss indicator for synthetic yarns

2011-05-10

2011-05-10

Turocy, David (Department: 1715)

Coating processes

Fluorescent or phosphorescent coating

C427S008000

Reexamination Certificate

active

07939128

ABSTRACT:
A webbing formed of synthetic yarns having an indicator for indicating exposure to ultraviolet light which results in strength loss of said synthetic yarns. The strength loss indicator comprises a strip extending along at least a portion of the webbing. The strip includes a phosphorescent material that produces a glow when exposed to ultraviolet light. The phosphorescent material is adapted to lose its ability to produce a glow over time exposure to ultraviolet light. Advantageously, the ability to glow fades at a rate correlated to the rate of loss of tensile strength of said synthetic yarns due to ultraviolet light exposure to indicate the condition of the webbing.

REFERENCES:
patent: 1106449 (2001-06-01), None

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