For leaf lettuce, start picking the leaves when there is at least 5-6 mature leaves of usable size. Usable size means about 2 long for baby lettuce, and 5-6 long for more mature lettuce. Keep picking until a seed stalk appears or the leaves become bitter.
Definition of coextruded. : produced by simultaneous extrusion of multiple layers The carbonated beverage container is a can within a can; the 7-layer coextruded package consists of a lightweight fluted plastic shell inside a smooth plastic outer container. â Predicasts Technology Update, 30 Apr. 1983 coâextruded plastic cans.
What Is Pultruded Fiberglass. Pultrusion is a continuous process for manufacture of composite materials with a constant cross-section. Material is pulled through a die compared to extrusions, which are pushed through a die.Composites are material matrices made up of two or more individual components; glass reinforcing fibers and thermosetting polymer resin, whose combined physical strength exceeds the properties of either individually.ontinuous fiberglass reinforcements, in the form of roving and glass mat, are fed from a creel to a resin impregnation station, to coat each fiber with a specially formulated polymer thermosetting resin mixture (wet out).