Weft snarl

A short length of warp or weft yarn that has twisted on itself owing to lively twist or insufficient tension. The snarling may occur during or prior to the weaving process. Weft snarls may also be referred to as weft curling.

Weft stop motion

A device for stopping a weaving machine in the event of a weft break-.

Weft straightener

A device for correcting the misalignment of fabric weft, especially if the latter is bowed and/or skewed (see bow (weaving) and skew).

Weft streak (defect)

An elongated faulty area of fabric running parallel to the weft threads and containing weft yarn which differs in material, linear density, filament, twist, lustre, tension or crimp, size, colour, or shade from the adjacent normal weft.
note: The term 'streak' implies that both edges of the faulty area are visible and that its length weft-way is less than the fabric width.

Weft-backed fabric

A woven fabric that contains one set of warp threads and two sets of weft threads. The warp and one weft together form the face, while the second weft is laid at the back of the fabric and is stitched into it at intervals so as to form a single structure, without distorting the surface appearance.

Weft-Knit Fabric

See CIRCULAR-KNIT FABRIC and FLAT-KNIT FABRIC.

Weft-knitted double jersey

A generic name applied to a range of knitted fabrics made on a rib or interlock basis, the construction of which is often designed to reduce the natural extensibility of the structure. The term is generally confined to fabrics knitted on machines of E IO gauge or finer and it may be classified as either non-jacquard or jacquard double jersey. For examples of non-jacquard fabrics see bourrelet, double piqu'e, Swiss double piqu'e, French double piqu'e, eight-lock, interlock, Milano rib, half-Milano rib, piquette, punto di Roma, single piqu'e, and texipiqu'e; and for jacquard fabric see rib jacquard (weft knitting)

Weftiess tape

A weftless narrow fabric consisting of a number of warp threads held together with an adhesive

Weftless tape

A weftless narrow fabric consisting of a number of warp threads held together with an adhesive.

Weighted Silk

Silk that has been treated with metallic salts during dyeing and finishing to increase the fabric’s weight and improve its drape. Over-weighting can cause deterioration of the fabric.

Weighting

The addition of metallic salts to silks to increase the mass and impart a firmer handle.

Well (lace machines)

The space. running the whole width of the machine, between the front and back combs. In this space, the positioning of warp and pattern threads is effected by the guide bars.
note.. The width of the well in the Leavers machine is determined by the maximum number of steel bars to be worked.

Welt

1. A finished edge on knit goods especially hosiery. In women’s stockings it is a wide band knitted from heavier yarn than the leg and folded on itself. 2. A small cord covered with fabric and sewn along a seam or border to add strength. 3. A seam made by folding the fabric double generally over a cord and sewing it. 4. A term sometimes used for piqué.

Welt (clothing)

A piece of material, normally folded to form a band, applied to finish the edge of a pocket or the hem of a garment.

Welt (knitting)

A secure edge of a knitted fabric or garment made during, or subsequent to, the knitting process. Welts made during the knitting process are usually at the starting end of the fabric and are formed parallel to the course. Seamed welts, which are made after the knitting process, may occur in any position in the fabric.inturned weltA welt consisting of a double fold of plain fabric made on a circular stocking machine. Sinker loops from one of the first few courses are retained while the welt fabric is knitted and are later intermeshed with alternate needle loops of a subsequent course. reverse weltA roll welt in which the plain courses are intermeshed towards the reverse side of the fabric. This welt is used particularly for stockings with turnover tops.roll weltA welt made on a rib basis, in which all the courses of loops except the first and last are intermeslied in the same direction towards the face side of the fabric. In making such a weft on lxl rib, the first and last courses are knitted on both sets of needles and the intermediate courses are knitted on only one set of needles.English welt A welt made on a rib basis, in which all the courses of loops except the first and last are intermeslied in the same direction towards the face side of the fabric. In making such a weft on lxl rib, the first and last courses are knitted on both sets of needles and the intermediate courses are knitted on only one set of needles.tubular weltA welt made on a rib basis, in which the number of courses with loops intermeshed in one direction is equal to the number of courses with loops intermeshed in the other direction. In making such a welt on a lxl rib, the first and last courses are knitted on both sets of needles and the intermediate courses consist of an equal number of plain courses on each set of needles.French weltA welt made on a rib basis, in which the number of courses with loops intermeshed in one direction is equal to the number of courses with loops intermeshed in the other direction. In making such a welt on a lxl rib, the first and last courses are knitted on both sets of needles and the intermediate courses consist of an equal number of plain courses on each set of needles.turned weltA welt that consists of a double fold of plain fabric and is made usually on a straight-bar knitting machine. All or alternate sinker loops of the first course are retained while the weft fabric is knitted and later intermeshed with the needle loop of a subsequent course.