Processing Tests for physical testing of rubber include Cure Extrudability
stress/strain tests; rate time-dependent tests; destructive tests; durability; electrical properties; and processing.
Among the most common tests performed by Lloyd Instruments LS1 test machine are spreadability, stickiness, extrudability
, compaction strength, compression strength, peel strength and actuation force of pumps and sprays.
Tube test (extrudability
test) Determines force necessary for removal of emulgel from tube and necessary to evaluate emulgel formulation for extrudability
Inherently superior in quality and intrinsic purity, a large proportion of EGA's annual billet production is cast in high extrudability
6063 alloy, in addition to other specifications such as 6060, 6061, 6082, 1000 and 3000 extrusion billets.
Compared with conventional TPEs, they boast superior resistance to skin oil, sweat, suntan lotion, and olive oil, while their extrudability
is said to be superior to that of PVC, TPU, and copolyester TPE.
However, the relatively high viscosity and molecular weight of the Nd-BR is inappropriate for ABS production since its high linearity promotes high cold flow behavior resulting in poor extrudability
and its molecular weight is difficult to control .
The test methods include evaluation of extrudability
(ability of the material to be forced, pressed, or pushed out), performance after artificial weathering, volumetric shrinkage upon cure, low temperature flexibility, extension-recovery, adhesion, slump, stain resistance, and of time during cure to loss of tack.
Among the material's important properties, Soarus says, are biodegradability; water solubility at room temperature; the fact that it is non-foaming when dissolved in water; "outstanding" gas barrier; high clarity; and extrudability
with a wide melt-temperature-processing window.
The coating solutions are made with Borstar[R] technology that is said to provide plastics with especially good melt strength and extrudability
, enhanced mechanical and heat-deformation properties, and environmental stress-cracking resistance.
Other tests include the measurement of peel strength, extrudability
, hardness, elongation and 'quick stick' of products, such as labels, sealants, tapes and pastes.
The base charge is nitrocellulose, a polymer that gives body to the powder and allows extrudability
Exploratory extrusion using filament extrusion die head: The first trial consisted of processing small amounts of granulated polypropylene wastes containing crosslinked latex binder or polyethylene fiber binder through a 3/4" Brabender single screw extruder with a filament extrusion head to determine extrudability
of the two wastes.