摘要:
Biocompatible coatings and spin finishes that can be applied to polyhydroxyalkanoate (PHA) polymers, and medical devices made from PHA polymers, have been developed. The coatings impart good lubricity to PHA polymers, particularly to fibers and braids made from these materials, making the coatings ideal for use on medical devices such as PHA braided sutures. The spin finishes can be applied to PHA fibers to facilitate their manufacture, and also for their conversion to other products, including medical textiles. The spin finishes serve to protect multifilament fiber bundles, and keep them intact following extrusion, and also to impart lubricity to the fiber bundles and monofilament fibers so that they are not damaged in subsequent processing steps particularly in textile processing. The coating reduces tissue drag of, for example, braided sutures.
摘要:
A preparation device prepares a sample of textile fibers, in particular cotton fibers, applicable to analysis and/or measuring apparatuses respectively for analyzing and/or measuring characteristics of the textile fibers forming the sample. The preparation device includes a comb body that can be coupled in a sliding manner along a rectilinear guide that faces a perforated plate against which to press a mass of textile fibers forming protuberances projecting from the holes of the perforated plate. The comb body is arranged to grip tufts of textile fibers from such protuberances. The preparation device also includes at least one brush that is mounted in a sliding manner along a rectilinear guide facing the perforated plate and that is arranged to brush the textile fibers forming the protuberances before the comb body grips the tufts.
摘要:
Biocompatible coatings and spin finishes that can be applied to polyhydroxyalkanoate (PHA) polymers, and medical devices made from PHA polymers, have been developed. The coatings impart good lubricity to PHA polymers, particularly to fibers and braids made from these materials, making the coatings ideal for use on medical devices such as PHA braided sutures. The spin finishes can be applied to PHA fibers to facilitate their manufacture, and also for their conversion to other products, including medical textiles. The spin finishes serve to protect multifilament fiber bundles, and keep them intact following extrusion, and also to impart lubricity to the fiber bundles and monofilament fibers so that they are not damaged in subsequent processing steps particularly in textile processing. The coating reduces tissue drag of, for example, braided sutures.
摘要:
Biocompatible coatings and spin finishes that can be applied to polyhydroxyalkanoate (PHA) polymers, and medical devices made from PHA polymers, have been developed. The coatings impart good lubricity to PHA polymers, particularly to fibers and braids made from these materials, making the coatings ideal for use on medical devices such as PHA braided sutures. The spin finishes can be applied to PHA fibers to facilitate their manufacture, and also for their conversion to other products, including medical textiles. The spin finishes serve to protect multifilament fiber bundles, and keep them intact following extrusion, and also to impart lubricity to the fiber bundles and monofilament fibers so that they are not damaged in subsequent processing steps particularly in textile processing. The coating reduces tissue drag of, for example, braided sutures.
摘要:
A fiber sample conditioning system having a comb for engaging and retaining fibers to form a beard, and at least two rotating brushes for brushing the fibers simultaneously from opposite sides of the beard in a direction along the fibers away from the comb.
摘要:
A seed cotton dryer comprises an array of electromagnetic wave energy generators in a cotton gin, a cotton picker/stripper. An appropriate amount of energy is used to evaporate a considerable amount of moisture in the seed cotton without producing enough energy to pop the cotton seeds. Seed cotton dried by wave energy is much easier to separate the cotton seeds and lint from leaves, stems and other plant parts. The seed cotton is preferably transported through the dryer in a conduit having flat sides which reflects the wave energy more efficiently than through a round conduit. Provisions are made to prevent arcing in the transport conduit when extraneous metal pieces are inadvertently mixed with the seed cotton. In some embodiments, heated air from a diesel engine is used to dry crops as they are being harvested.
摘要:
An apparatus for adding moisture to cotton in a cotton ginning process utilizes a quick response heater to raise water to at or near boiling to generate vapor which is entrained in a heated air flow to the battery condenser and/or gin stand.
摘要:
An apparatus for processing a fibrous material batt like lint cotton to increase the moisture content of the material and to compress the batt of humidified fibers to increase the batt density. A stream of warm humid air is passed through the moving batt of fiber that is constrained between a rotatable hollow cylinder and a stationary perforated screen. The air passing through the batt of figure removes debris from the batt and carries the debris to an associated plenum. The batt is doffed off the rotatable cylinder by a roller that serves to both doff and compress the batt. A roller doffs the fiber batt from the rotatable cylinder and doffs and compresses the batt against a compression roller.
摘要:
Machine for ultra-rapidly condition cotton fiber. In a processing embodiment for conditioning fiber being pneumatically transported by a gas flow, fibers are collected to form a thin mat. Aerosolized liquid is delivered to the thin mat, and then conditioned fiber form the thin mat is re-delivered into the gas flow.
摘要:
A moisture spray device is positioned in overlying relation to the link slide and the cotton batt which moves down the slide with photoelectric sensing devices being provided on the lint slide for controlling a valve that supplies water to the spray device thus controlling the discharge of moisture onto the cotton batt in response to the thickness of the cotton batt. Time delay switches are incorporated to prevent the moisture control valve from shutting down in the event of a momentary break in the cotton batt and to allow the lint cotton in the slide to start normal flow after the tramper starts.