International Paper Company

The Kendall Company

Bba Nonwovens Simpsonville, Inc.

Fiberweb Simpsonville, Inc.

Jon A Howey

Emil Delgado

Harish A Patel

Randall J Rogers

Gary C Anderson

Timothy A Martin

The invention is a cleaning material for cleaning printing machines. The cleaning material is comprised of a fabric that has been impregnated with a cleaning composition having branched chain monobasic and/or dibasic esters that contain 2-ethyl hexanoate. The cleaning composition can also include additional low volatility solvents and surfactants. A particularly useful cleaning composition is comprised of isobutyl stearate in combination with branched chain monobasic and/or dibasic esters that contain 2-ethyl hexanoate. The cleaning material can be wound onto a roll that can be adaptable to fit commercially available printing machine cleaning devices.

Composition and material for cleaning printing machines

A nonwoven media wiping material is provided by a thermal point bonding process which comprises the steps of combining a carded web of predominantly textile-length thermoplastic fibers having a higher melting temperature and a polymeric sheet having a lower melting temperature, and applying heat and pressure to the combination of film and fiber layers through thermal calendering. The polymeric sheet melts and becomes bonded to the carded fibers in discrete points to provide a soft and lofty outer media contacting finish.

Diskette liner with film and web layers

This invention generally relates to a nonwoven fabric for use as a liner for the magnetic recording medium in a computer diskette. More particularly, it is concerned with a thermally bonded, multi-layer, composite nonwoven which includes a distinct top magnetic media contacting layer having 25-100% rayon fibers, and middle and bottom layers being substantially free of rayon fibers. The middle layer is composed of a plurality of webs each comprising a blend of matrix thermoplastic fibers and binder fibers. The binder fibers in the middle layer are isolated from the two exterior layers. The bottom cartridge contacting layer comprises 100% matrix thermoplastic fibers. The cartridge contacting layer prevents the lower melt thermoplastic fibers in the middle layers from sticking to calendar rolls during thermal bonding. This structure provides a liner with superior wiping and hygroscopic dimensional stability and low debris characteristics.

Multi-layered diskette liner

A nonwoven liner for a diskette cartridge is made of hydroentangled fibers and impregnated with a small amount of binder which is uniformly distributed throughout the fabric. The binder comprises no more than 5% by weight and preferably between 1.5-3.0% by weight of the fabric. The low concentration of binder ensures that the liner surface does not become totally coated with plastic film that reduces cleaning ability, while also providing improvements in tensile strength and debris reduction. The binder solution preferably has a high surface tension (low surfactant level), so that the binder becomes concentrated at the junction points of the fibers throughout the fabric. The low level of surfactant ensures a low risk of chemical attack of the disk media surface. The hydroentangled fabric cleans the disk media more efficiently, has less fiber debris, contains less environmental contaminants, is substantially loftier, and is cut with cleaner edges than standard thermally bonded diskette liners.

Hydroentangled fabric diskette liner

A hybrid nonwoven liner for a diskete holder is bonded and impregnated with a small amount of binder which is uniformly distributed throughout the fabric and comprises no more than 5% by weight and preferably between 1.5-3.0% by weight of the fabric. The low concentration of binder ensures that the liner surface does not become totally coated with plastic film that reduces cleaning ability, while also providing a high increase in tensile strength and a significant debris reduction. The binder solution preferably has a high surface tension (low surfactant level), so that the binder beads and becomes dried at junction points of the fibers and evenly distributed throughout the fabric. The low level of surfactant ensures a low risk of chemical attack of the disk media surface.

Hybrid nonwoven diskette liner

Nonwoven fabrics are described comprising a layered fabric having an inner layer of substantially thermoplastic material, for example Nylon 6 fibers, disposed adjacent and recessed bonded to at least one outer layer or a pair of outer layers of textile length fibers by means of heat and pressure. The thermoplastic fibers in the inner layer have a lower melting point than the outer fibers in the fabric. A nonwoven fabric constructed in this manner has qualities of; low levels of debris, high compressibility, low abrasiveness, and dimensional stability. These qualities are decidedly of use in many products, most particularly as a liner in computer diskettes, wherein a liner material must be used to wipe the magnetic disk within the computer diskette to keep it free of foreign particles, which may cause errors in the transfer of information onto or from the magnetic disk.

Nonwoven fabric

Nonwoven fabrics are described comprising a layered fabric having an inner layer of substantially thermoplastic material, for example fibers, disposed adjacent and thermally bonded to at least one outer layer or a pair of outer layers of textile length fibers by means of heat and pressure. The thermoplastic fibers in the inner layer have a lower melting point than any other fibers in the fabric. A nonwoven fabric constructed in this manner has qualities of; low levels of debris, high compressibility, low abrasiveness, and dimensional stability. These qualities are decidedly of use in many products, most particularly in computer diskettes, wherein a material must be used to wipe the magnetic disk within the computer diskette to keep it free of foreign particles, which may cause errors in the transfer of information onto or from the magnetic disk.

A nonwoven hospital sponge material has been provided comprising a layered fabric having an inner core of a substantially hydrophilic material disposed adjacent at least one outer or surface layer or between a pair of outer layers of a substantially hydrophobic material, said sponge material being bonded by passing the material through rolls engraved in a pattern of lands and grooves in such a way that a repeating pattern of three degrees of compression are imposed therein: high compression, intermediate compression and, little or no compression. A nonwoven fabric bonded in this manner becomes more absorbent, loftier, has good surface integrity and does not adhere to the wound surface, when the nonwoven sponge material is then compacted subsequent to the bonding step. This thusly constructed, rather lighweight nonwoven material, produces a relatively inexpensive and disposable hospital sponge and dressing material having all of the desirable features of the more expensive woven materials commonly used today.

Growing community of inventors

Mansfield, MA, United States of America

Jon A Howey