Technical Resources Area
Technical Resources Area |
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GENERAL DESCRIPTION
Plascoat NG30 is a polyethylene powder supplied for fluidized bed coating of metal articles. It can be processed at much lower temperatures than most other LDPE coating powders. This has been achieved without loss of stress crack resistance or loss of thermal stability. Since the coating temperatures are lower than for LDPE and the thermal stability is at least equal to that of LDPE, the chances of degradation and hence "post-yellowing" occurring with NG30 are minimised. NG30 coatings can be applied at 30 to 50% less coating thickness than other polyethylene coating powders, thereby giving a 30-50% reduction in powder usage.
| TYPICAL
USES
Plascoat NG30 is ideal as a general purpose coating material, particularly suitable for refrigerator shelves.
GUIDE TO TYPICAL COATING CONDITIONS
Recommended Pre-treatment: Ensure metal is clean by thorough degreasing and removal of rust and mill scale.
Batch Operation: Metal preheat temperature 518°F - 680°F, depending on metal thickness. Dip for 3-5 seconds. A post-heat cycle at 320°F may be required to obtain smooth finish on thin metal. Water quench optional.
Automatic Coating Plant: Pre-heat oven 572 - 644°F for 2 to 4 minutes Dip 3 - 5 secs Post-heat oven 356 - 428°F for 2 to 4 minutes Water Quench Optional The process temperatures used should only be the minimum to achieve an acceptable surface finish.
Overheating may cause the coating to discolor later in storage or in service.
Thicknesses outside the recommended range may be detrimental to the properties of the coating.
For typical properties of the coating see below.
HEALTH AND SAFETY
Plascoat NG30 is supplied as a finely divided powder. Whilst there are no known health hazards associated with NG30, normal handling precautions for dealing with fine organic powders should be taken - i.e. excessive dust generation and inhaling of the powder should be avoided. Facilities may be required for removing excess dust from the working area during the coating of certain difficult items.
As with all polymeric powders, the material can ignite if brought into contact with a high temperature source or ignition - particularly in the fluidized condition.
Reference should be made to Plascoat Health and Safety Data Sheet HS101, available on request.
Should the coating be required for contact with food or potable water, further details should be obtained from Plascoat. |
TYPICAL
PROPERTIES OF THE POWDER
TYPICAL PROPERTIES OF THE MATERIAL
*These values may vary from color to color
STORAGE Stored in a clean, dry area at ambient temperature the material will not deteriorate. However, in the interest of good housekeeping, stocks should be rotated.
Proven savings that can be made by converting to NG30 from standard polyethylene coating powders
To convert from traditional
polyethylene powders to NG30 and maximise the benefits The coating of refrigerator shelves in Plascoat polyethylenes
Pinholes on wirework items -
their causes and possible solutions Blower requirements for fluid bed coating
The coverage of white polyethylene on wire
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TYPICAL PROPERTIES OF THE COATING
The following data applies to a 14 mil coating applied, under standard conditions, onto 0.125 inch thick steel. The pre-treatment consisted of degreasing and grit-blasting.
| Recommended Coating Thickness | 12 -
40 mils on flat plate 26 - 40 mils microns on wire |
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| Appearance | Smooth, moderately glossy | |
| Gloss | ISO 2813 | 45 |
| Impact Strength
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Gardner (drop
weight) ISO 6272 Direct 73°F |
18 in.lbs |
| Abrasion | Taber ASTM D4060/84 H18, 500g load, 1000 cycles |
100 mg weight loss |
| External Weathering | Not recommended for outdoor use | |
| Chemical
Resistance*
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- Dilute Acids
140°F - Dilute Alkali 140°F - Salts (except peroxides) 140°F - Solvents 73°F |
Fair Fair Fair Not recommended |
| Safe Working Temperature | 140°F max continuous | |
| QUALITY
Plascoat is committed to the manufacture and supply of a wide range of thermoplastic coating powders. This service is backed by the unrivalled experience of over 50 years of powder coating application.
With a policy of continuous improvement to its range of products, Plascoat reserves the right to alter or amend any item. Stringent quality control procedures are carried out at every relevant stage of manufacture and Plascoat operates a quality management system approved by BSI in accordance with ISO 9001:2000. |
Plascoat
can also offer, through its factories in Europe, specialist
plastic coating equipment, an extensive
custom coating service
and a size reduction service for plastics and other materials.
Plascoat is a subsidiary member of the IPT Group of companies.
Plascoat is a UK registered trade name.
It should be appreciated that the information given here is, to the best of our knowledge, true and accurate. However, since conditions under which our materials and equipment may be used are beyond our control, recommendations are made without warranty or guarantee. |
10 Wireguard 10 PPA 571
| Plascoat Systems Limited Trading Estate, Farnham, Surrey, GU9 9NY United Kingdom Tel: +44 (0) 1252 733777 Fax: +44 (0) 1252 721250 email: sales@plascoat.com |
Plascoat Europe BV Kerkweg 11, Postbus 9 3214ZG Zuidland The Netherlands Tel:+31 (0) 181 458 888 Fax:+31 (0) 181 458 877 salespce@plascoat.nl |
Plascoat Corp Crown Centre Suite 600 5005 Rockside Rd Cleveland OH44131 U.S.A. Tel: 800 489 7236 Fax:+1 216 520 1273 plascoat@nls.net |
Plascoat Corp (Sales & Dist) Punda Mercantile Inc 4115 Sherbrooke Str West, Suite 610, Montreal, Quebec H3Z 1K9 Call: 800 489 7236 Tel: +1 514 931 7278 Fax: +1 514 931 7200 sales@punda.com |
NG30/05/02/08 /Web