Akzona Incorporated

Howard Alexander Mercer

Erick-Pierre Fournier

Thomas W Couch

James A Harvey

Derk T Huibers

A freeze and thaw indicator is provided utilizing the expansion characteristics of water when it undergoes a change from the liquid state to the solid state. An ampul having one side made weaker than its opposite side is substantially filled with water. Indicator paper having ink printed on one side is situated adjacent to the ampul. The indicator paper and ampul are housed in a blister pack plastic container for protecting the ampul from breakage. When the temperature around the indicator reaches the freezing point of water, the ampul breaks. During a subsequent thawing, the water flows on to the indicator paper causing the ink which is printed on one side to wick up, thereby indicating that the freeze or thaw has taken place.

Freeze-thaw indicator

In producing a composite yarn which includes a carrier strand and a layer of tacky polymer, provision is made for adjusting the position of a tube through which the carrier strand passes in relation to a polymer extrusion orifice to vary the annular thickness of the polymer layer.

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Asheville, NC, United States of America

Howard Alexander Mercer