A method of forming an active agent infused linear material includes passing a substantially linear polymeric substrate through a linear substrate infusion chamber in a first direction, flowing a liquid infusion solution through the linear substrate infusion chamber in a second direction, and contacting the linear substrate with the liquid infusion solution at an infusion temperature and for an infusion time effective to infuse the one or more active molecules into or onto a surface of the linear substrate, thereby forming an active agent infused linear material. The liquid infusion solution includes one or more active molecules. The second direction is substantially opposite or substantially parallel to the first direction. A linear substrate infusion system and a polymeric linear substrate are also disclosed.

A method of forming an active agent infused linear material includes passing a substantially linear polymeric substrate through a linear substrate infusion chamber in a first direction, flowing a liquid infusion solution through the linear substrate infusion chamber in a second direction, and contacting the linear substrate with the liquid infusion solution at an infusion temperature and for an infusion time effective to infuse the one or more active molecules into or onto a surface of the linear substrate, thereby forming an active agent infused linear material. The liquid infusion solution includes one or more active molecules. The second direction is substantially opposite or substantially parallel to the first direction. A linear substrate infusion system and a polymeric linear substrate are also disclosed.

Active agent infused linear materials are provided with an infused surface that is infused with one or more dye molecules as well as methods of production. A method of forming an active agent infused linear material also as provided herein includes passing a substantially linear polymeric substrate through a linear substrate infusion chamber, and contacting the linear substrate with the liquid infusion solution at an infusion temperature and for an infusion time effective to infuse the one or more active molecules into or onto a surface of the linear substrate, thereby forming an active agent infused linear material. The liquid infusion solution includes one or more active molecules.

The present invention relates to a method of producing a coating liquid impregnated sheet-like reinforcing fiber bundle formed by applying a coating liquid to a sheet-like reinforcing fiber bundle that is unidirectionally arranged continuous reinforcing fibers long in one direction. The present invention provides a production method and a coating device of a coating liquid impregnated sheet-like reinforcing fiber bundle, wherein the method and device can effect continuous running without clogging of generated fuzz even at a high running speed and effect efficient impregnation of a coating liquid into the sheet-like reinforcing fiber bundle. The present invention relates to a method of producing a coating liquid impregnated sheet-like reinforcing fiber bundle, including allowing a sheet-like reinforcing fiber bundle, which is unidirectionally arranged reinforcing fibers, to pass substantially vertically downward through the inside of a coating section storing a coating liquid, whereby the method provides the sheet-like reinforcing fiber bundle with the coating liquid; wherein the coating section includes a liquid pool and a narrowed section which are in communication with each other; wherein the liquid pool has a portion whose cross-sectional area decreases continuously along a running direction of the sheet-like reinforcing fiber bundle, and wherein the narrowed section has a slit-like cross-section and has a smaller cross-sectional area than the top side of the liquid pool.

A method of forming an active agent infused linear material includes passing a substantially linear polymeric substrate through a linear substrate infusion chamber in a first direction, flowing a liquid infusion solution through the linear substrate infusion chamber in a second direction, and contacting the linear substrate with the liquid infusion solution at an infusion temperature and for an infusion time effective to infuse the one or more active molecules into or onto a surface of the linear substrate, thereby forming an active agent infused linear material. The liquid infusion solution includes one or more active molecules. The second direction is substantially opposite or substantially parallel to the first direction. A linear substrate infusion system and a polymeric linear substrate are also disclosed.

Active agent infused linear materials are provided with an infused surface that is infused with one or more dye molecules as well as methods of production. A method of forming an active agent infused linear material also as provided herein includes passing a substantially linear polymeric substrate through a linear substrate infusion chamber, and contacting the linear substrate with the liquid infusion solution at an infusion temperature and for an infusion time effective to infuse the one or more active molecules into or onto a surface of the linear substrate, thereby forming an active agent infused linear material. The liquid infusion solution includes one or more active molecules.

Described is a module for the treatment of fibres for obtaining a non-woven fabric. The module comprises a fan unit configured for generating a flow of air through a closed path and a chamber for the treatment of the fibres positioned in fluid communication with the closed path, delimited on opposite sides by respective side panels. Each side panel comprises a first gap defining a blowing portion of the closed path and a second gap defining a suction portion of the closed path. Each side panel defines a branch of the closed path which extends between the fan unit and the treatment chamber. The module also comprises a first platform and a second platform comprising respective first and second channels placed in fluid communication with the first gap and second gap of each side panel and with the treatment chamber to define connecting portions of the closed path. The fan unit is positioned equidistant relative to the treatment chamber in such a way that the flow of air is divided symmetrically between the branches of the closed path.

Described is a module for the treatment of fibres for obtaining a non-woven fabric. The module comprises a fan unit configured for generating a flow of air through a closed path and a chamber for the treatment of the fibres positioned in fluid communication with the closed path, delimited on opposite sides by respective side panels. Each side panel comprises a first gap defining a blowing portion of the closed path and a second gap defining a suction portion of the closed path. Each side panel defines a branch of the closed path which extends between the fan unit and the treatment chamber. The module also comprises a first platform and a second platform comprising respective first and second channels placed in fluid communication with the first gap and second gap of each side panel and with the treatment chamber to define connecting portions of the closed path. The fan unit is positioned equidistant relative to the treatment chamber in such a way that the flow of air is divided symmetrically between the branches of the closed path.

A polymeric linear substrate is provided with one or more active agents infused into the linear material to a depth less than the 100 micrometers, optionally where the polymeric linear substrate has a cross sectional dimension that does not exceed 2 centimeters. The polymeric material may include a polyamide, a polyester, polyvinylchloride, or polycarbonate. Also provided are systems for infusing a linear substrate with one or more active agents that includes a dye supply providing a dye; a process tank connected to the dye supply and providing a reservoir of a liquid infusion solution including the dye through the linear substrate infusion system; and a process chamber fluidly connected to the process tank for contacting the liquid infusion solution with a linear substrate effective to infuse the dye into a surface of the linear substrate.

A polymeric linear substrate is provided with one or more active agents infused into the linear material to a depth less than the 100 micrometers, optionally where the polymeric linear substrate has a cross sectional dimension that does not exceed 2 centimeters. The polymeric material may include a polyamide, a polyester, polyvinylchloride, or polycarbonate. Also provided are systems for infusing a linear substrate with one or more active agents that includes a dye supply providing a dye; a process tank connected to the dye supply and providing a reservoir of a liquid infusion solution including the dye through the linear substrate infusion system; and a process chamber fluidly connected to the process tank for contacting the liquid infusion solution with a linear substrate effective to infuse the dye into a surface of the linear substrate.