Research Bulletin 2000-5Refinishing Plastic Parts:
Akzo Nobel / Sikkens

Spraying Plastic Car Parts - Autocryl®/Autobase® Systems

Plastoflex® Primer

Description

Plastoflex Primer is a fast drying transparent adhesion primer for plastic car body parts. Plastoflex Primer should be used on untreated plastic parts whether these parts are hard, flexible or soft.

Product: Plastoflex Primer

 Basic Raw Material: Alkyd resin

Application
  1. Contains xylene, butyl alcohol and other ingredients.
  2. Plastoflex Primer is ready to spray
    HVLP 2x1
    HVLP Siphon 0.071" - 0.087" (1.8-2.2 mm)
    HVLP Gravity 0.051" - 0 . 059" (1.3 -1.5 mm)
  3. Max 10 psi (max 0.8 bar)
  4. Flash time: 5-10 minutes at 70° F (20°C)
  5. Non sanding. 20 minutes at 70° F (20° C)

Suitable Substrates

Plastoflex Primer can be applied on any existing plastic body part used on the outside of cars, such as grills, bumpers, spoilers and body panels. Plastoflex Primer will adhere to the following unpainted substrates:

  1. Hard Plastics

    SMC = Sheet Moulding Compound
    BMC = Bulk Moulding Compound
    GFK = Fiberglass Laminate
    PC = Polycarbonate

  2. Flexible Plastics

    PP/EPDM = Ethylene Propylene Diene Modified
    PP/EPM = Ethylene Propylene Modified
    ABS = Acrylonitrile Butadiene Styrene
    PPO = Polyfenylene Oxide Polymer
    PA = Polyamide
    HP-Alloy = Honda Polymer Alloy
    PUR = Polyurethane
    P.D.T = Polybutene Terephtallate (Pocan)
    TPU = Thermo Polyurethane

  3. Soft Plastics

    PUR = Polyurethane

    N ote:
    Plastoflex Primer should not be used on polypropylene or polyethylene. For these types of plastic, use Primer PO.

Surface Preparation

When degreasing and cleaning unpainted plastic parts, allow the part to dry out for 20-30 minutes after the application of degreaser and before the application of Plastoflex Primer.

NOTE :
Plastic body parts already having a paint system (or pre-primed), should not be treated with Plastoflex Primer. These can be treated as existing finishes.

Mixing Ratio: None, product is ready to use.

Spraying Viscosity: 18-20 sec. ZAHN cup #2 (16-18 sec. DIN #4) at 70° F (20°C).

Pot Life: None

Spray Gun & Pressure
Gun Type Fluid Tip Spraying Pressure Fluid Pressure
Siphon Feed
0.055"- 0.067"
(1.4-1.7 mm)
40-50 psi
(3-4 bar)
n/a
Gravity Feed
0.051"-0.055"
(1.3-1.4 mm)
40-50 psi
(3-4 bar)
n/a
Pressure Feed
0.039"-0.047"
(1.0-1.2 mm)
40-50 psi
(3-4 bar)
8-10 psi
(0.6-0.8 bar)
HVLP Siphon
0.071"- 0.087"
(1.8-2.2 mm)
max 10 psi
(max 0.8 bar)
n/a
HVLP Gravity
0.051" - 0.059"
(1.3-1.5 mm)
max 10 psi
(max 0.8 bar)
n/a

Application Method

Spray two single coats. Allow 5 -10 minutes flash off time after each coat at 70° F (20° C)

Cleaning of Equipment: Clean with Sikkens cleaning solvent or lacquer thinner.

Film Thickness: 0.6-1 mil. per single coat.

Recoatability

Without sanding, Plastoflex Primer can be recoated after 20 minutes flash off at 70° F (20° C) with Autocryl or Autobase. After 16 hours drying, abrade with a grey scuffing pad before applying topcoat. When using these products over plastic parts, a flexible additive must be used. Please see the TDS relative to the product chosen.

Cover Rate: Approximately 55 sq. ft./liter of Plastoflex Primer per single coat.

Stock Keeping

Color: Transparent

Container Size: One quart (946 ml)

Shelf Life: One year if stored unopened at room temperature.

SAFETY ASPECTS

Ready to Spray VOC: Plastoflex Primer = 6.8 lb./gal 815 g/liter

Notice:
Do not handle until the Material Safety Data Sheets have been read and understood. Regulations require that all employees be trained on Material Safety Data Sheets for all chemicals with which they come in contact. The manufacturer recommends the use of an organic vapor respirator or air supplied respirator when exposed to vapors or spray mist.