Laid-in fabric, weft-knitted

A fabric containing non-knitted yarns, which are held in position by the knitted structure. These fabrics are frequently raised to produce a pile effect, e.g., fleecy fabrics.

Laid-In Yarn

See AXIAL YARN.

Laid-pile finish

A finish given to textile fabrics to produce a surface nap or pile that is laid in one direction. The effect is usually produced by raising the wet or damp fabric. (See also dress-face finish.)

Lam'e

A general name for fabrics in which metallic threads are a conspicuous feature.
Note.. Originally, lam'e referred only to fabrics containing gold or silver threads.

Lamb's wool

Wool from the fleeces of lambs (young sheep up to the stage of weaning).
Note 1: This definition applies irrespective of the breed or type of sheep.
Note 2: It has been common practice in the trade to apply the term 'lambswool' to textile products, having a softhandle, made from 100% virginwool of which atleast one-third is lamb's wool as defined here.

Lambskin cloth

A cotton fabric having a high weft sett, with a dense nap of fibre on the surface. The weave is of a weft-sateen character of the fustian type.

Lamé

A fabric woven with flat metal threads usually silver or gold that form either the background or the pattern.

Laminar Flow

Streamline flow in a viscous fluid such as molten polymer near a solid boundary.

Laminated Fabric

1. Fabric composed of a high-strength reinforcing scrim or base fabric between two plies of flexible thermoplastic film. Usually open scrims are used to permit the polymer to flow through the interstices and bond during calendering. 2 See BONDED FABRIC 1

Lampas

A multi-colour figured drapery and upholstery fabric similar to a brocade, made of silk, cotton, viscose, or combinations of yams. Two warps, one forming the ground and one binding the wefts, in regular or irregular order, form the figure.

Landing bar (lace machines)

A bar running the lace-making width of the Leavers lace machine, beneath the combs, to support the carriages. There are two landing bars, one each side of the well. They move in unison with the catch bars.
Note.. There are no landing bars on a go-through machine, which has circle strips. This is one of the obvious features distinguishing an original Leavers machine from a go-through machine (see lace machines).

Landings (narrow fabrics)

Those parts of a loom batten that guide and support the shuttles on either side of the warp.

Lap

1. (General) A sheet of fibres or fabric wrapped round a core with specific applications in different sections of the industry, e.g., sheets of fibre wound on rollers or round endless aprons to facilitate transfer from one process to the next.
Note: In cotton spinning, the sheets of fibres from openers and scutchers, sliver-lap machines, and ribbon-lap machines are wrapped on cores.
2. (Flax) An arrangement of the fibre strands in scutched flax pieced out for hackling, or in pieces of hackled flax to facilitate their removal as seperate units from built-up bundles (see scutching (flax)).
3. (Fabric) The length of fabric between successive transverse folds when pieces are plaited down or folded.
4. (Fabric) An individual layer of fabric in roll form.
5. Fibres wrapped accidentally round any revolving machine part.
6. Silk waste after discharging and combing, but before processing into sliver or top. The staplelength of the fibre decreases between the first, second and third drafts (combings).

Lap (warp knitting)

Descriptive of the wrapping of the yarn around the needle. (See also lapping movement.)
Note: The term lap is sometimes used synonymously for overlap.

Lap Splitting

A condition caused by a lap that will not unwind in carding in the same thickness as it was wound in picking. This splitting of the sheet of fiber can result in either a thicker or thinner sheet being fed into the card. © 2001 Celanese Acetate LLC