Ripples comb

A large comb used for removing the seed bolts or capsules from the flax crop by hand. (See also roughing-out (flax).)

Riser

In textile fabric designing a colored or darkened square on the design paper which indicates that the warp end is over the filling pick at that point. The opposite of riser is sinker.

Rocket package

A large version of a supercop, used as a means of supplying a coarse weft yam to shuttleless weaving machines. It may be up to 80Omm in length and 75mm in diameter.

Rodier

A non-jacquard double jersey fabric made on a rib basis, using a selection of knitted loops and floats. The two most important sequences are known as Swiss and French double piqu'e respectively, and the knitting sequences for each are shown. Double piqud is also known as 'wevenit', 'rodier', and 'overnit'. (See also double jersey, weft-knitted.)

Roll Goods

Fabric rolled up on a core after it has been produced. It is described in terms of weight and width of the roll and length of the material on the roll.

Roll Lapping

A condition in which groups of fibers attach themselves to the drafting rolls instead of following the normal path through the drafting system. These fibers cause the trailing fibers to wind around the rolls and to bread the end down completely. Cleaning of the rolls is required to remove the accumulated fiber.

Roll 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.(sub category of welt (knitting))

Roll-boiling

A comparatively short potting treatment at the boil.

Rolled Ends

1. On a section beam rolled ends are adjacent ends that do not unwind parallel to each other. Rolled ends can be caused by such factors as uneven tension ridgy beams and static. 2. The ends can also roll behind the hook reed in slashing and can tangle with each other resulting in broken ends and ends doubling.

Rolled seam

A seam in which the two edges of the material to be joined are rolled over together and secured by a single line of stitching.
Note.. This construction is also used for edge finishing single plies of fabric.(sub category of seam type)

Rolled Selvage

A curled selvage.

Roller Card

Generally any type of card in which rollers do the carding. Usually this refers to a woolen card with a main cylinder and four to seven stripper rolls and worker rolls working in pairs.

Roller Coating

In this method a roller is used to apply the coating to the moving substrate fabric. Various roll configurations can be used.

Roller locker machine

A plain net machine in which the motion of the carriages is imparted by fluted rollers,.

Roller-bed steamer

A steamer, in which fabric is carried in a relaxed state over a bed of individually driven rollers situated in the lower half of a steaming chamber.