Volkswagen Polo Service & Repair Manual: Two-Part HS Top Coat

Definition:

Two-Part HS Solid Top Coat -L2K 073 ... ..-

Two-Part HS Mixed Paint -L2K 074 ... ..-

Edition 04/2013

Product Description

The two-part HS top coat series is a high solid top coat system. It is used for vehicle painting. The color program is extensively coordinated through an assortment of paint mixtures.

Properties:

Easy to process

Dries quickly

Excellent top coat gloss

VOC compliant below 420 g/L

Application Instructions

Base Surface

Suitable base surfaces:

Hardened, solvent-resistant, well-preserved and sanded old paint or factory paints

Surfaces treated with primer or filler

Suitable pre-treatment materials:

Dependent on the object and base surface in accordance with the structure recommendations.

Pre-treatment of base surfaces:

Carefully clean using Silicone Remover -LVM 020 000 A5- or Silicone Remover, Long -LVM 020 100 A5-.

Dry-sand with rotary sander and dust extraction, P400-500 grit.

Or “wet”-sand with P800-1000 sandpaper.

Use a suitable cleaning agent before reworking to ensure a clean and residue-free surface.

Processing

Mixture ratio:

3:1 by volume with:

Two-Part VHS Hardener, Short -LHA 009 050 A2- (for small surfaces, spot repair)

Two-Part VHS Hardener -LHA 009 051 A2-/-LVM 009 051 A5- (for small to medium-sized surfaces, at moderate temperatures) Two-Part VHS Hardener, Long -LHA 009 052 A2-/-LHA 009 052 A3- (for larger surfaces at moderate temperatures) Two-Part VHS Hardener, Extra Long -LHA 009 053 A2- (for large surfaces and high temperatures) See technical application information for the two-part VHS hardener. Refer to → Chapter „Two-Part VHS Hardener and Two-Part VHS Performance Hardener“. Note The mixture ratio for Black Matt -L2K 073 3FZ A2- and Gray Matt -L2K 073 7DL A2- is 4:1 with Two-Part VHS Hardener -LHA 009 051 A2-/-LVM 009 051 A5-.

Processing time/pot life:

Ready to spray in 60 to 90 minutes at +20 °C

Can be thinned using Two-Part Thinner, Special -LVM 009 200 A2-, HS Spot Thinner -LVM 006 000 A2- or Two-Part Thinner, Long -LVM 009 300 A2-. Note When using the HS Spot Thinner -LVM 006 000 A2-, observe the technical application information. Refer to → Chapter „HS Spot Thinner“.

Application type “coat”

Processing viscosity at +20 °C material temperature

Processing viscosity “Compliant” and “HVLP”:

18-20 Seconds

18 to 25 seconds for Black Matt -L2K 073 3FZ A2- and Gray Matt -L2K 073 7DL A2-

Adding 12.5 % thinner at +20 °C material temperature

Set spray nozzle (see manufacturer's information): “Compliant” 1.2 to 1.4 mm.
Set spray nozzle (see manufacturer's information): “HVLP” 1.3 to 1.4 mm.
Set spray pressure (see manufacturer's information): “Compliant” to 2.0 to 2.5 bar.
Set atomizing pressure (see manufacturer's information): “HVLP” 0.7 bar.

1.5 spray applications are required to get the recommended dry layer thickness of 50 to 60 µm.

Note When using for minimal damage repairs (clever repair procedure), the 12.5% Two-Part Thinner, Special -LVM 009 200 A2- can be replaced with 12.5 % HS Spot Thinner -LVM 006 000 A2-.

Do not apply on slanted surfaces.

During the spray application process, the first half spray application should form a thin, preliminary film upon which a fully-completed spray application can be applied. For less opaque colors, it may be necessary to apply another spray application after the corresponding ventilation time. Painting over the two-part HS top coat with same is possible to do without »intermediate sanding« when done within 24 hours. The mixing paint in this mixing paint series can only be used within the color tone formulas. When processing individual mixing paints on their own, major deviations from the information given in the application instructions are possible.

Drying

Air dry at +20 °C room temperature:

Dust dry after 20 to 30 minutes

Ready for assembly after 5 to 6 hours

Dry overnight

Final drying time with forced drying is a minimum of 5 to 10 minutes.

Forced dry at +60 °C object temperature for 15 to 20 minutes

Final drying time for IR drying is at least 5 minutes.

IR drying of bright colors with short-wave radiators for 5 minutes at 50 % power and then for 10 minutes at 100 % power.

IR drying of bright colors with medium-wave radiators for 15 minutes

IR drying of dark colors with medium-wave radiators for 12 minutes

IR drying of dark colors with short-wave radiators for 12 minutes at 50% power

Note When using a short-wave radiator at 100% power, bubbles or solvent popping marks could form when reworking dark colors.

Special Instructions:

Elastification:

The base material must first be mixed with 15 % Elastic Additive -ALZ 011 001-.

Mixture with two-part VHS hardeners, 3:1 with 15 % thinner

Matting effect/structuring

The base material must first be mixed with 100 % Matting Component -ALN 775 106-/Structuring Component, Fine -ALN 775 108-. Note The Black Matt -L2K 073 3FZ A2- and Gray Matt -L2K 073 7DL A2- two-part solid top coats do not require additional Matting Component -ALN 775 106-, since they are already matted. Mixture ratio for Two-Part VHS Hardener -LHA 009 051 A2-/-LVM 009 051 A5- is 4:1 with 15 % thinner. Two spray applications (with 5 to 10 minutes intermediate drying time) are needed for an even paint film surface.

Personal Protective Equipment:

Note the safety data sheets

Wear the personal protective equipment during application

Characteristics

Delivery Viscosity	Depends on the color.
Flashpoint:	+23 °C
VOC value: 2004/42/IIB(d)(420)420	The EU limit for this product (product category IIB.b) in ready-to-use form is a maximum of 420 g/L volatile organic compounds. The VOC-value of this product in ready-to-use form is a maximum of 420 g/L.

Storage

The Two-Part HS Solid Top Coat -L2K 073 ... ..- has a guaranteed shelf life of 24 months from date of manufacture. The guaranteed shelf life of Two-Part HS Mixed Paint -L2K 074 ... ..- is 36 months from the production date. Both products can be used no later than up to the date indicated on the label when stored in original containers at +20 °C.

Two-Part HS Top Coat