This patent relates to the method of manufacture of preforms with a soot based core rod
, such as Vapor Axial Deposition (VAD) and synthetic overclad cylinder glass to provide low water peak fiber performance.
Intended for industry novices and investors, this guide describes the design of an injection parison mold and core rod
for producing plastic containers, the injection blow molding tooling, and the components of both three-station and four-station machines.
As preforms are injection molded, their design geometry must take into account constraints such as core rod
demouldability from the inside preform and preform demouldability from its cavity.
In other CGP news, the company introduced Leak-Loc, a bottle and cap combination molded with core rod
technology featuring a snap-down effect.
to a patent for certain optical fibers drawn from a preform having a core rod
made by a modified chemical vapor deposition (MCVD) process.
The primary challenge was construction of tiny core rods
that would maintain concentricity within less than 0.
Other than backburns, Gerg says the company is using the Makino primarily to burn IDs in dies, face detail punches, detailed OD punches, and core rods
The mold mounting design of the machines is adjustable, so that either the preform or core rods
can be conditioned.
In searching for an optimum material, the firm tried flame-plated tool steel and chrome-plated core rods
with less than satisfactory results.
As a result, Uddeholm Vancron 40 is now being used for powder compacting punches, dies and core rods
Features include a magnetic clamping system for the lower die set, carbon-filtered blowing air, stainless-steel core rods
, electric parts extraction, and a mold area and conveyor enclosed with a pressurized, laminar flow of HEPA-filtered air.
The fourth station is said to be especially useful for processing PET, PP, Heavy-walled containers, and for other applications that require external heat transfer of the core rods