A method for feeding elastic threads in a process for the production of layered composite articles includes: feeding at least one elastic thread along a path extending from a reel of an elastic thread up to a joining zone with at least one web material. Feeding the elastic thread along the above path includes: giving the elastic thread a first percentage elongation along a first section of the path extending between the reel and a control zone; giving the elastic thread a second percentage elongation along a second section of the path extending between the control zone and the joining zone. The second percentage elongation is greater than the first percentage elongation and a length of the first section is greater than a length of the second section.

A paperboard core is described above that is designed to receive a yarn wound thereon, such as an elastomeric yarn that relies on friction for proper winding of the yarn onto the core. In particular, the core includes a clay-coated paper outer ply which is capable of providing direct frictional engagement of the core with the yarn, such that the yarn is windable on the core via direct contact between the clay-coated outer ply and the yarn. In this way, there is no need to use a film on the outer surface of the core in order to obtain the desired frictional properties that will result in proper winding of the yarn onto the core.

A method for feeding elastic threads in a process for the production of layered composite articles includes: feeding at least one elastic thread along a path extending from a reel of an elastic thread up to a joining zone with at least one web material. Feeding the elastic thread along the above path includes: giving the elastic thread a first percentage elongation along a first section of the path extending between the reel and a control zone; giving the elastic thread a second percentage elongation along a second section of the path extending between the control zone and the joining zone. The second percentage elongation is greater than the first percentage elongation and a length of the first section is greater than a length of the second section.

Elastic yarn wound body packages able to simplify processing of a tail yarn of an elastic yarn when manufacturing a fabric, or the like, continuously by simultaneous vertical take-up unwinding of a multistage elastic yarn through providing elastic yarn wound body packages on a multistage stand are provided. The elastic yarn wound body package comprises a paper tube and an elastic yarn wound body, wherein: the paper tube has a groove in the circumferential direction, perpendicular to the paper tube axis, between an end portion of the elastic yarn wound body and an end portion of the paper tube; a tail yarn of the elastic yarn wound body is wound into the groove; and a wire-shaped object or tape-shaped object that crosses at least a portion of the yarn bundle of the tail yarn is held thereby. Also provided are paper tubes comprising, in the vicinity of at least one end, a tail thread wrapping groove having parallel edges along a circumferential direction perpendicular to the axis of the paper tube, the paper tube comprising a recession, the maximum width of which is greater than the width of the tail thread wrapping groove and the deepest part of which is deeper than the tail thread wrapping groove, over the tail thread wrapping groove or an extension of the tail thread wrapping groove and elastic thread reel packages comprising these paper tubes.

The present disclosure relates to methods for making elastomeric laminates that may be used as components of absorbent articles. During assembly of the elastomeric laminate, elastic material may be advanced and stretched in a machine direction and joined with either or both first and second substrates advancing in the machine direction. The apparatuses according to the present disclosure may be configured with a plurality of spools, wherein each spool comprises a single elastic strand wound onto a core. The elastic strands are unwound from respective spools by rotating the spools about the cores. Neighboring elastic strands may be spaced or separated from each other at a desired distance in a cross direction by advancing the elastic strands through a strand guide that may comprise a plurality of tines or reeds. The assembled elastomeric laminate may then be accumulated by being wound onto a roll or festooned in a container.

Elastic yarn wound body packages able to simplify processing of a tail yarn of an elastic yarn when manufacturing a fabric, or the like, continuously by simultaneous vertical take-up unwinding of a multistage elastic yarn through providing elastic yarn wound body packages on a multistage stand are provided. The elastic yarn wound body package comprises a paper tube and an elastic yarn wound body, wherein: the paper tube has a groove in the circumferential direction, perpendicular to the paper tube axis, between an end portion of the elastic yarn wound body and an end portion of the paper tube; a tail yarn of the elastic yarn wound body is wound into the groove; and a wire-shaped object or tape-shaped object that crosses at least a portion of the yarn bundle of the tail yarn is held thereby. Also provided are paper tubes comprising, in the vicinity of at least one end, a tail thread wrapping groove having parallel edges along a circumferential direction perpendicular to the axis of the paper tube, the paper tube comprising a recession, the maximum width of which is greater than the width of the tail thread wrapping groove and the deepest part of which is deeper than the tail thread wrapping groove, over the tail thread wrapping groove or an extension of the tail thread wrapping groove and elastic thread reel packages comprising these paper tubes.

A dispenser for elastomeric monofilament is provided. The dispenser has a hollow lower half hingedly joined to a mating hollow upper half. Each half has a peripheral wall with vertically extending sidewalls defining an interior and an exterior to the dispenser. A pair of hubs is formed in the sidewalls of one of the halves and a reel is rotably disposed between the hubs. The reel has elastomeric monofilament therearound. A passage from the interior to the exterior of the dispenser is formed at a junction between the halves by a channel formed in each half having a sinuous path through the peripheral wall thereof. The channels are configured such that a sinuous passage is formed from the interior of the dispenser to the exterior of the dispenser by the juxtaposition of the channels when the halves are joined to each other.

A method for unwinding yarn is provided that allows for maximizing the draft of the yarn, while monitoring tension. The method includes providing a yarn package including elastic yarn; choosing a selected draft for said elastic yarn; unwinding the elastic yarn from the yarn package from a driven roll to yarn processing equipment at the selected draft which is determined by a ratio of a speed of the yarn at the yarn processing equipment to a speed of the driven roll; measuring tension in the elastic yarn; and providing an alarm when said tension reaches a critical level.

A method is provided for winding an elastic yarn into a cylindrical substantially straight-ended yarn package. The method includes feeding an elastic or elastomeric yarn at a substantially constant speed to a tube core to form the yarn package. The yarn package is rotated such that the yarn package with a substantially constant surface speed. The yarn is wound to form layers of helical coils, while providing a helix angle variation of greater than zero up to +/80%.

A dispenser for elastomeric monofilament is provided. The dispenser has a hollow lower half hingedly joined to a mating hollow upper half. Each half has a peripheral wall with vertically extending sidewalls defining an interior and an exterior to the dispenser. A pair of hubs is formed in the sidewalls of one of the halves and a reel is rotably disposed between the hubs. The reel has elastomeric monofilament therearound. A passage from the interior to the exterior of the dispenser is formed at a junction between the halves by a channel formed in each half having a sinuous path through the peripheral wall thereof. The channels are configured such that a sinuous passage is formed from the interior of the dispenser to the exterior of the dispenser by the juxtaposition of the channels when the halves are joined to each other.