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PEM offers reel to reel surface treatment destinated to many types of application :
 Application of electric or electronic connections.
Processes and special platings.
Coatings for solar pannels.
These specific platings are resulting from the setting up of industrial processes allowing the realization of the deposit on the entire surface of the piece, said "full plating", as well as only on part of it, and in this case we speak about "selective deposit". With the aim to answer every day a little bit more to the functionnal as well as economical targets of our customers, the selectivity is possible :
 On the sides of the precut piece or of the full band. We then talk about selective plating on the edges.
On strips disposed in the center of the precut pieces or of the bands. We then talk about plating of strips.
On specific areas of the precut pieces or of the bands. We then talk about spot plating.
For further information, please go on the page about "The PEM technologies of selectivity".
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 Tin plating
Nickel plating
Copper plating
Silver and gold plating
Palladium deposits in reel to reel
Electrolytical deposits in reel to reel on aluminium and alloys
   
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Tin-plating.
Tin-plating processes offered:
Dull tin-plating
Reflowed tin-plating
PEM 1.6 tin-plating (Hardened Tin)
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Characteristics Sought:
Aptitude for brazing (aptitude for welding)
Aptitude for electrical contact
Improvement in quality of insertion, limitation of friction
Resistance to ageing and corrosion
Addition of copper-based brazing alloy
Compared properties of coatings:
| Types of applications |
Properties of coating |
| Dull tin-plating |
Good protection against corrosion
Good aptitude for brazing |
| Reflowed tin (bright reflowed tin plating) |
Good endurance over time
Good aptitude for brazing and good durability
Adhesion by diffusion, no risk of cleavage |
| PEM 1.6 |
Electrical contact resistance value close to bright reflowed tin
Very low friction factor ( µm ~ 0.23 ).
High surface hardness.
Wetting property medium but not affected by ageing (brass strips only). |
| Bright tin |
Good resistance to corrosion
Poor endurance of brazing aptitude over time
Thickness up to 15 µm
Greater hardness than dull tin |
| Tin/lead |
Excellent aptitude for brazing
No risk of whiskers |
In certain applications, a sub-layer is necessary before the tin deposit. The effect of this sub-layer is to defer diffusion of elements from the base metal into deposit in the coated alloy within the final layer (brass).
Coating method:
For each type of tin-plating, the coating can be:
Selective strips with one or more strips.
Tolerance: ± 0.2 mm.
Minimum width of strips: 4 mm.
Total: in this case, the entire surface is coated
Thickness of deposit:
In practice, between 0.8 and 20µm.
For other values contact us
Substrates treated (materials coated):
Copper-based media (copper, brass, bronze and other special alloys).
Aluminium and aluminium alloy media.
Steels, including stainless steel.
Ferro nickel
Zinc and zinc alloys
For other substrates contact us
Dimensions:
Laminates, flat bars or profiled strips up to 230 mm.
Cut strips up to 230 mm.
Sections and bars up to 200 mm for a thickness of 40 mm.
Wires up to a diameter of 8 mm
Tubes up to a diameter of 35 mm.
For other dimensions contact us
Fields of application:
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Connectors and associated hardware for the automotive, electrical construction, defence, household appliances, information technology and telecommunications industries. |
| Electronic component industry. |
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Nickel plating.
Nickel plating processes proposed:
Dull nickel.
Special "semiconductor" semi-bright nickel.
Bright nickel.
Super-ductile nickel.
Phosphorous nickel (6 to 9% phosphorous)
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High phosphorous nickel (9 to 12% phosphorous)
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Characteristics sought:
Aptitude for brazing.
Aptitude for wire bonding and die attach
Protection against corrosion.
Compared properties of coating:
| Types of applications |
Properties of coating |
| Dull nickel |
Aptitude for standard brazing (activated flux) |
| Bright nickel |
Aptitude for die attach (brazing with pre-shaped material) |
| Super-ductile nickel |
Aptitude for distortion (elongation percentage approximately 30%) |
| Phosphorous nickel - Semiconductors |
Aptitude for wire bonding and die attach influenced by the rate of Phosphorus |
Coating method:
For each type of nickel plating, the deposit can be:
Selective strip with one or more strips.
Tolerance: ± 0.2 mm (some products ± 0.1).
Minimum width of strips: 4 mm.
Or Selective Spot for use in sub - layer of gold or silver . On pre-cut strips
Total: in this case, the entire surface is coated.
Plated substrates :
Copper-based media (copper, brass, bronze and other special alloys).
Aluminium and aluminium alloy media.
Steels, including stainless steel.
Ferro nickel Zinc and zinc alloys
For other substrates contact us
Dimensions:
Laminates, flat bars or profiled strips up to 215 mm.
Stamped strips up to 200 mm.
Sections and bars up to 200 mm for a thickness of 40 mm.
For other dimensions contact us
Fields of application:
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Mechatronics |
Connectors and associated hardware for the automotive, electrical construction, defence, household appliances, information technology and telecommunications industries. |
| Electronic component industry. |
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Silver-plating and gold-plating.
Characteristics sought:
Aptitude for wire bonding and die attach.
Quality of contact preserved when ageing.
Remarkable insertion and contact properties. |
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Compared properties of coating:
| Types of applications |
Properties of coating |
| Silver-plating on copper base. |
Aptitude for gold wire bonding
Aptitude for electrical contact
Aptitude for brazing |
| Silver-plating with sub-layer. |
Aptitude for simple silver-plating plus:
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Diffusion barrier between coating and base metal. |
| Temperature resistance |
| Protection of base metal. |
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| Gold-plating on copper base |
Aptitude for electrical contact and bonding. |
| Gold-plating on copper base with sub-layer. |
Aptitude for simple gold-plating plus:
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Diffusion barrier between coating and base metal. |
| Temperature resistance |
| Protection of base metal. |
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Coating method:
For each type of silver-plating and gold-plating the coating can be:
Selective strips with one or more strips.
Tolerance: ± 0.2 mm.
Minimum width of strips: 4 mm.
Selective (Spot). On pre-cut strips
Tolerance: ± 0.2 mm.
Total: in this case, the entire surface is coated.
Plated substrates :
Copper-based media (copper, brass, bronze and other special alloys).
Aluminium and aluminium alloy media.
Steels, including stainless steel.
Ferro nickel
Zinc and zinc alloys (for silver-plating)
For other substrates contact us
Dimensions:
Laminates, flat bars or profiled strips up to 200 mm.
Stamped strips up to 200 mm.
For other dimensions contact us
Fields of application:
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Connectors and associated hardware for the automotive, electrical construction, defence, household appliances, information technology and telecommunications industries. |
| Electronic component industry. |
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Palladium deposit .
Characteristics sought:
Aptitude for wire bonding and die attach
Addition for brazing |
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| Connectors and associated hardware for the automotive, electrical construction, defence, household appliances, information technology and telecommunications industries. |
| Electronic component industry. |
Compared properties of deposits:
| Types of applications |
Properties of deposit |
| Palladium on copper alloys |
Aptitude for gold wire bonding and aptitude for electrical contact. |
| Palladium with an underlayer |
| Aptitude of pure palladium plus : |
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Diffusion barrier between coating and base metal. |
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Protection of base metal. |
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Plating method:
For each type of silver-plating and gold-plating the coating can be:
Selective strip with one or more strips.
Tolerance: ± 0.2 mm.
Minimum width of strips: 4 mm.
Selective (Spot). On pre-cut strips
Tolerance: ± 0.2 mm.
Minimum diameter of the spots : 1 mm.
Total: in this case, the entire surface is coated.
Plated substrates :
Copper-based media (copper, brass, bronze and other special alloys).
Steels, including stainless steel.
For other substrates contact us
Dimensions:
Laminates, flat bars or profiled strips up to 200 mm.
Stamped strips up to 200 mm.
For other dimensions contact us
Fields of application :
Electronic component industry..
Connectors and associated hardware for the automotive, electrical construction, defence, household appliances, information technology and telecommunications industries.
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Reel-to-reel electrolytic deposits on aluminium and its alloys
Characteristics sought:
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Improvement of electrical contact quality |
| Aptitude for wetting by soft solders (brazeability) |
| Protection of substrates against corrosion and the effects of galvanic couples between different metals |
Please consult our data sheet
Platings offered:
Dull tin
Bright tin
Reflowed tin (bright reflowed)
Dull nickel - brightened nickel
Copper
Plating method:
For each type of deposit, the plating can be:
Selective strip with one or more strips.
Tolerance: ± 0.2 mm.
Minimum width of strips: 4 mm.
Total: in this case, the entire surface is coated
Dimensions :
Laminates, flat bars or profiled strips up to 200 mm.
Sections and bars up to 200 mm for a thickness of 110 mm.
Wires up to a diameter of 8 mm
Tubes up to a diameter of 35 mm.
For other dimensions contact us
Fields of application:
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Connectors and associated hardware for the automotive, electrical construction, defence, household appliances, information technology and telecommunications industries. |
| Electronic component industry. |
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Anodisation
Deposit of polymid or of tape in reel to reel
Brass plating
 Oxidation of titanium colored
Toplay et Inlay
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Anodisation.
Characteristics sought:
Plating of metal with an isolating alumina layer
Cold-brazed
Bonding characteristics (applications for skiing)
Coating method:
For each form of anodisation the coating is total or selective.
Plated substrates:
Aluminium and aluminium alloys.
For other substrates contact us
Dimensions:
Flat strips up to 310 mm.
For other dimensions contact us
Fields of application:
Ski industry
Electromagnetic equipment industry.
Rail industry.
Space industry .
Aviation industry.
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Reel-to-reel deposits of polyimids or adhesives
Characteristics sought:
Thermal insulation, electrical insulation, etc …
Configuration for this type of deposit:
Generally localised, sequential or strips
Laying tolerance ± 0.2 mm
Minimum width of adhesive 2 mm
Plated substrates:
All metallic media
For other substrates contact us
Dimensions:
Flat strips up to 150 mm.
For other dimensions contact us
Fields of application:
Electronic component industry |
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Brass coating .
Characteristics sought:
Improvement of the potential of adhesion of the steel substrate
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Configuration for this type of deposit:
Full plating
Alloy tolerance : ± 5%,
Selective plating is possible
Plated substrates:
All metallic bases
For other substrates contact us
Dimensions:
Flat strips up to 230 mm.
For other dimensions contact us
Fields of application:
Tires industry
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Oxidation of titanium colored
Characteristics sought:
Cosmetic coloring
Possible colors: blue, purple, yellow and green.
Plated substrates:
Titanium and alloys.
For other substrates contact us
Dimensions:
Parts of the order of mm² up to 20 cm².
For other dimensions contact us
Fields of application:
Application in medical, paramedical, watches areas.
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Black oxydation of copper
ABSOLUTE ®
 
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ABSOLUTE ® [ www.absolute-coating.com ]
Most important characteristics of the coating :
 Covering of the metal by a set of layers.
Optical properties of strong absorption and low emissivity of the solar energy (a > 96% - å< 9%).
Resistant to salt spray, to the temperature changes as well as to corrosion.
Types of coating :
Full or selectiv on one side of the band.
Full on one side for panels .
Coated substrates :
Copper or aluminium
Contact us for other substrates.
Dimensions :
Width of the coils up to 340 mm.
Panels up to 2m x 1m.
Contact us for other dimensions or thicknesses.
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Black oxydation of copper.
Characteristics sought:
Covering of metal by a layer of black copper oxide.
Optical property of strong absorption and low emission of the solar radiations (a > 96% - å< 10%).
Improvement of the bondabilty
Coating method:
Full or selective by strip.
Coated substrates:
Copper and Aluminium
For other substrates contact us.
Dimensions :
Flat strips up to 200 mm.
For other dimensions contact us
Fields of application:
Solar thermal collectors
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SOFIPEM,
Siaugues St Romain - 43300 SIAUGUES STE MARIE
Tel: +33 (0)4.71.74.21.09 - Fax: +33 (0)4.71.74.26.57 - Email : contact@sofipem.com
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