all4-PCB

all4-PCB is a proud distributor of Sigma. The Sigma Group stands for engineering with experience for more than 25 years. With the headquarters in Karlstad, Sweden, their product portfolio contains equipment for on-site recycling of alkaline and acidic etching solution. Equipment from Sigma has a short payback period (usually 6-18 months) and helps increase the profitability of the user. Combined with modern material technologies, Sigma produces high quality equipment, high reliability, low downtime, easy to clean, corrosion proof and low cost of ownership. They combine renown professionals from the equipment, chemistry and yield management fields, with interconnect process equipment and ecological recycling technologies.

Sigma Mecer Etchant Recycling Systems

Features:

Processes available for both alkaline and cupric etching
Solvent extraction method of the Copper and subsequent Copper electro-winning
No replenisher needed for the alkaline process
Oxygen regeneration of the cupric etchant; no dangerous, toxic oxidation processes needed
Excellent etching process control due to continuous feed of fresh etchant
Copper being removed from rinse water as well –water consumption saving
No replenisher etchant needed
Cu slabs 99.9% pure are generated – sold at market price

Oxygen Cupric Etchant Regeneration

Features:

Significantly reduced cost for the oxidation process
No need for using hazardous oxidation chemicals
No risk for generation of chlorine gas
Improved etching quality
Improved working environment
Reduced emissions to the environment

Cross sections below show how the etching results are improved when using an Oxidation Reactor system