Synthetic fibrous buff
AssigneeMinnesota Mining and Manufacturing Company
InventorsBurton E. Frank, Lloyd W. Legacy, Dean S. Walker
Life of this patent
Estimating the term…
Abstract
A synthetic fibrous buff composed of layers of nonwoven mats of synthetic organic fibers impregnated with an oil-, water-, and grease-resistant polymeric binder material provides a light-weight smooth running buff which is quiet, clean and cool to operate. Certain of the buffs are useful in high temperature environments such as for wiping molten solder from freshly soldered container seams.
Claims15
A rotary buff comprised of a plurality of layers of non-woven fabric held together by fastening means, said non-woven fabric having a fabric density on the order of 0.1 to 0.6 grams per cc, being at least about 0.1 mm thick and consisting essentially of a multiplicity of randomly disposed, adhesively bonded, flexible, durable, tough, resilient organic fibers no larger in size than about 8 denier, having a length on the order of 1 cm to 15 cm and a break strength of at least about 3.5 grams per denier, said fibers being formed of a synthetic organic fiber-forming polymeric material having a melting or decomposition temperature above about 175.degree.C, said fibers being firmly adhesively bonded at points where they cross and contact one another to form a uniform web with a rigid but not brittle binder material which has a melting or decomposition temperature above about 175.degree.C, said binder material being contained in said fabric in an amount sufficient to firmly adherently bind said fibers together but insufficient to immobilize said fibers.
A rotary buff comprised of a plurality of layers of non-woven fabric held together by fastening means, said non-woven fabric having a fabric density on the order of 0.15 to 0.35 grams per cc, being about 0.25 to 0.4 mm thick and being comprised of a multiplicity of randomly disposed, adhesively bonded, flexible, durable, tough, resilient high modulus viscose rayon fibers of a size on the order of 1 to 6 denier, having a length on the order of 2 to 7.5 cm and a break-strength of at least about 5 grams per denier, said fibers being firmly adhesively bonded at points where they cross and contact one another with from about 30 percent to about 50 percent by weight of butadiene acrylonitrile binder material which has a melting or decomposition temperature above 175.degree.C.
A rotary buff especially suited for use in wiping molten solder from freshly soldered metal container seams, said buff comprised of a plurality of layers of nonwoven fabric held together by fastening means, said non-woven fabric having a fabric density on the order of 0.15 to 0.35 grams per cc, being about 0.25 to 0.4 mm thick and consisting essentially of a multiplicity of randomly disposed, adhesively bonded, flexible, durable, tough, resilient nylon fibers on the order of 1 to 6 denier, having a length of about 2 to 7.5 cm and a break strength of at least about 5 grams per denier, said fibers bonded together with a binder material consisting essentially of a major portion of polyvinyl chloride and a minor portion of polyvinyl alcohol, said nylon fibers and said binder material being flame and heat resistant.
A rotary puckered buff comprised of puckered layers of non-woven fabric held together by a rigid clinch, said non-woven fabric having a fabric density on the order of 0.1 to 0.6 grams per cc, being about 0.4 to 0.75 mm thick and consisting essentially of a multiplicity of randomly dispersed adhesively bonded, flexible, durable, tough, resilient organic fibers no larger in size than about 8 denier, having a length on the order of 1 cm to 15 cm and a break strength of at least about 3.5 grams per denier, said fibers being formed of a synthetic organic fiber-forming polymeric material having a melting or decomposition temperature above about 175.degree.C, said fibers being firmly adhesively bonded at points where they cross and contact one another to form a uniform web with a rigid but not brittle binder material which has a melting or decomposition temperature above about 175.degree.C, said binder material being contained in said fabric in an amount sufficient to firmly adherently bind said fibers together but insufficient to immobilize said fibers.
Dependencies are inferred from the claim text.