Textile yarn slashing system

An applicator for applying foam material to a traveling substrate comprising a slotted member having a slot facing one surface of the traveling substrate and extending thereacross, a resilient holddown member opposing and covering said slot for passage of the substrate therebetween, and a sheet of flexible material covering said resilient holddown member and forming a substrate contacting surface, said covering sheet being advanceable from a supply to replace worn covering material with unworn covering material.

In a textile yarn slashing system in which yarns are fed from a yarn supply device as a sheet of individual aligned yarns, through a size box for pick up of size, and through a dryer, the improvement comprising a foam applicator disposed between said yarn supply device and said size box and through which said sheet of yarns from said supply device passes for pre-wetting of said sheet of yarns, whereby said pre-wetting reduces the amount of size pickup by the yarns needed to properly condition the yarns for subsequent processing, said applicator being characterized further in that said applicator comprises a plurality of parallel tubes containing foam and through which the yarns of said sheet of yarns advance.

In a textile strand slashing system in which strands are fed from a strand supply device as a sheet of individual aligned strands, through a size box for pick up of size, and through a dryer, the improvement comprising a foam applicator disposed between said strand supply device and said size box and through which said sheet of strands from said supply device passes for pre-wetting of said sheet of strands, whereby said pre-wetting reduces the amount of size pickup by the strands needed to properly condition the strands for subsequent processing, said applicator comprising a plurality of parallel tubes containing foam and through which the strands of said sheet of strands advance.

In a textile foam slashing system in which yarns are fed from a yarn supply device as a sheet of individual aligned yarns, through a size box for pick up of size, and through a dryer, the improvement comprising a foam applicator disposed between said yarn supply device and said size box and through which said sheet of yarns from said supply device passes for pre-wetting of said sheet of yarns, whereby said pre-wetting reduces the amount of size pickup by the yarns needed to properly condition the yarns for subsequent processing, said applicator being characterized further in that said applicator has a main foam passage through which foam is supplied to said sheets of yarn, a by-pass passage through which foam may be discharged from said main passage and a normally closed valve in said by-pass passage that is closed during foam application through said main passage and is openable for by-passing foam from said applicator.

An applicator for applying foam material to a traveling substrate comprising a main foam passage having an end through which foam is supplied to said substrate, a by-pass passage through which foam may be discharged from said main passage and a normally closed valve in said by-pass passage adjacent said main foam passage end that is closed during foam application through said main passage and is openable for by-passing foam from said applicator.

In a textile yarn slashing system in which yarns are fed from a yarn supply device as a sheet of individual aligned yarns, through a size box for pick up of size, and through a dryer, the improvement comprising a foam applicator disposed between said yarn supply device and said size box and through which said sheet of yarns from said supply device passes for pre-wetting of said sheet of yarns, whereby said pre-wetting reduces the amount of size pickup by the yarns needed to properly condition the yarns for subsequent processing, said applicator being characterized further in that said applicator has a slot extending lengthwise transversely across and facing one surface of the sheet and a passage extending from said slot and having straight sides adjacent said slot for delivery of foam therethrough to said slot, an adjustable end seal member in said straight sided passage having flat side surfaces of rigid material disposed in sealing relation to the straight sides of said passage and having resilient interior material urging said side surfaces into sealing engagement with said passage straight sides.

An applicator for applying foam material to a traveling substrate comprising a slotted member having a slot facing one surface of the traveling substrate and extending thereacross, said slotted member having a passage extending from said slot and having straight sides adjacent said slot for delivery of foam therethrough to said slot, an adjustable end seal member in said straight sided passage having flat side surfaces of rigid material disposed in sealing relation to the straight sides of said passage and having resilient interior material urging said side surfaces into sealing engagement with said passage straight sides.

In a textile yarn slashing system the improvement comprising a foam applicator disposed for passage of a sheet of individual aligned yarns therethrough, said applicator applying foam under pressure with the foam containing a sufficient amount of sizing material therein to properly condition the yarn for subsequent processing, said applicator having a slot extending across and facing one surface of the sheet of yarns for delivery of foam thereto, and a holddown member facing the other surface of the sheet of yarns and opposing and covering said slot for passage of the sheet of yarns therebetween and defining with the slot a foam pressure chamber through which the sheet of yarns passes for application of foam under pressure to both surfaces of the sheet of yarns passing therethrough.