Nordson's Adhesives & Sealants Guide - 2020-2021 (13th Edition)

Auxiliary Equipment
Adhesive & Sealants Equipment Guide Auxiliary Equipment | 14-1
Web Content
Nitrogen Generation System
& Booster Pump
Description
The Nordson nitrogen generation system and nitrogen
booster pump were developed to help customers achieve a
simple, cost-effective nitrogen supply to:
• produce a closed cell foam when using Nordson foaming
technology;
• create a nitrogen blanket when using Nordson tank melters
or extruders with reactive hot melt materials or materials
prone to char.
The Nordson booster pump is necessary to boost the
nitrogen gas pressure when high-pressure gas is required,
as when used in conjunction with a SureFoam system.
Foaming Applications
While plant air, or a variety of inert gases, can be used
with Nordson foaming systems to create the closed cell
foam, nitrogen gas is considered best. Nitrogen gas supply
is clean; relatively inexpensive; truly inert (non reactive
with adhesives or sealants being formed); and creates
small, consistent bubbles.
Tank Blanketing
Inert gas protects adhesives/materials in a holding or
processing tank from exposure to oxygen and/or air (and
most specifically in the case of reactive polyurethane
adhesives, the moisture in air). Referred to as a “nitrogen
blanket,” a constant supply of gas serves to fill up any
“empty” space in a tank, thereby displacing oxygen/
air. The blanket helps maintain the adhesive’s bonding
integrity, prevents char development and in the case of
moisture-cure adhesives, prevents premature curing.
Virtually any of Nordson’s tank melters can be fitted with
a tank blanketing system if desired/needed.
Nitrogen Gas Generation Process
While nitrogen gas is often supplied in cylinders, they are
cumbersome and require special handling/storage; require
frequent change-out on the production line; and must be
refilled/replenished regularly.
Nitrogen Generation System & Booster
On-site production of nitrogen gas can be
instituted relatively inexpensively and easily with
the Nordson nitrogen generation system.
Plant air is the raw material that feeds the
nitrogen generation process. A two-stage
filtration process removes contaminants and
moisture. The dry, purified air then passes into
the membrane separation section of the nitrogen
generator. The membrane construction allows
the nitrogen molecules to proceed through to
the end of the bundle of hollow tubes while the
other air components, including oxygen and
argon, pass through the tube membrane and
vent to the outside atmosphere. The end result is
an uninterrupted supply of nitrogen gas that is
95–99.5% pure.
To place your order, NAD call 1-888-NORDSON (1-888-667-3766), fax 1-770-497-3733 or online at www.enordson.com.
International Orders, call 1-440-985-4797, fax 1-440-985-1096, or email intcustomerservice@nordson.com