Page 301 - Industrial Cutting of Textile Materials

288 Glossary

Pizza (wheel) knife nonmotorized freely moving knife used in automated single-ply cutting
for easy applications.
Punch cutting tool to create small round holes in the cut components.

Q
QR code a two-dimensional optical label that contains information about the item to which it
is attached.
Quality control of cut components one of the final operations in a cutting room during which
all cut components are inspected visually to control fabric quality, the conformity of the size
and the shape of cut components to their pattern pieces, and the quality of the notches and
drill marks.

R
Reciprocating motion a repetitive up-and-down or back-and-forth linear motion.
Recutting of faulty components one of the final operations in a cutting room, during which
the faulty components are recut from fabric pieces with the same colour shade using their
original pattern pieces.
Reflection burn damage of the cut material surface caused by the laser beam when it cuts
through the material, hits the work surface and reflects back to the bottom of the material.
Registration marks (fiducial marks) marks located in the corners, edge centres, or both of a
printed image to ensure pattern alignment by a vision system of the automated cutter.
Respreading of the roughly components a spreading operation that is performed to obtain
precise matching of the pattern in all the components.
Roll-up device device to roll-up treated material immediately after its processing on the work
surface, used in laser kiss cutting, engraving, and marking.
Roll loader a lifting device to take fabric rolls from the floor or the table top to the cradle of
the spreading machine. The roll loaders can ensure both fabric roll loading and unloading
operations.
Rough cutting of components during cutting, the certain fabric allowance is left around the con-
tours of components, and their cut lines may not be perfectly parallel to their original contours.
Round (rotary, circular) knife a knife with a circular blade. During cutting process, it rolls
over the material to be cut.
Router the cutting tool that during cutting process rotates around its vertical axis and also
realizes movement along the profile of the cut component.

S
Sectioned marker a marker in which components with similar lengths or single-size bodice
pieces are united. The length of a section is determined by the longest pattern piece in-
cluded in it.
Semiautomatic lay end cutter a lay end cutter that performs fabric cutting and returning to its
original position automatically. Counting of fabric plies and lifting and lowering of a front
rail has to be performed manually.
Semiautomated spreading process the spreading process using a spreading machine, when
the operator moves along the spreading table and follows the spreading process. The oper-
ator also smoothes the surface of the lay, recognizes faults in the spread fabric, and makes
decisions to leave faults in the spread or cut them out.
Shade variations of one fabric colour fabric of different dye lots (batches) may have varia-
tions in shading (batch-to-batch colour variations). Slight colour variations may occur also
in one fabric roll (side-centre-side or end-to-end colour variations).