Metal detectable fiber and articles formed from the same

A fabric formed from a plurality of fibers, each of said plurality of fibers comprising;

• a thermoplastic polymer having a cross-section and a length, the cross-section being between 0.1 and 400 microns;
• and
• a particulate comprising a plurality of spherical particles, and a plurality of flattened and misshaped particles formed from spherical particles, said particulate distributed in said thermoplastic polymer, said particulate making the fiber detectable by X-ray detection or magnetic detection, the particulate having a shortest linear dimension, as measured from among three orthogonal Cartesian coordinates axes X-Y-Z that is less than or equal to one half of an average dimension along the three orthogonal Cartesian coordinate axes X-Y-Z of the cross-section wherein said particulate is present from 2 to 12 total weight percent of the total weight of the fiber;
• and
• wherein said particulate is one of iron, bronze, brass, barium salts, cobalt, titanium, tin, copper, tungsten, platinum, silver, bismuth, zinc, lead, molybdenum, neodymium, samarium, alloys of any of the aforementioned metals, oxides of any of the aforementioned metals, or nitrides of any of the aforementioned metals.

A fabric formed from a plurality of fibers, each of said plurality of fibers comprising;

• a thermoplastic polymer having a cross-section and a length, the cross-section being between 0.1 and 400 microns;
• a particulate comprising a plurality of spherical particles, and a plurality of flattened and misshaped particles formed from spherical particles, said particulate distributed in said thermoplastic polymer, said particulate making the fiber detectable by X-ray detection or magnetic detection, the particulate having a shortest linear dimension, as measured from among three orthogonal Cartesian coordinates axes X-Y-Z that is less than or equal to one half an average dimension along the three orthogonal Cartesian coordinate axes X-Y-Z of the cross-section;
• wherein said particulate is present from 2 to 12 total weight percent of the total weight of the fiber;
• and
• wherein said thermoplastic polymer is a melt drawn thermoplastic.

A process of detecting a fabric article comprising:

• forming a fiber comprising a polymer having a cross-section and a length;
• and a particulate including a plurality of spherical particles and a plurality of flattened and misshaped particles formed from spherical particles, said particulate distributed in said polymer to form protrusions, where said particulate is stainless steel making the fiber detectable by balanced coil metal detection wherein said particulate is present from 2 to 12 total weight percent of the total weight of the fiber;
• forming a fabric from said fiber;
• manufacturing the fabric article from said fabric;
• passing the fabric article through a metal detector;
• and
• collecting a signal from said metal detector indicative of the presence of the fabric article.