Product Description

Filler Prep SDS

When repairing late-model automotive plastics, applying body filler directly to the raw substrate often results in the filler peeling, lifting, or "rolling up" during the feather-edging process. The Polyvance Filler Prep Adhesion Promoter (SKU: 1060FP) is a specialized surface modifier designed to completely eliminate this issue. Formulated specifically to create a strong chemical bond between body fillers and famously difficult "problem plastics" like TPO, TEO, and Polypropylene, this liquid prep allows your filler to get an aggressive "bite" into the plastic.

Packaged in a convenient 4 fl. oz. (118 mL) can, this highly concentrated formula requires no spray guns or mixing. It comes equipped with a dauber brush built directly into the lid, allowing collision technicians and DIYers to quickly brush it over the sanded repair area, let it flash, and confidently apply their filler or flexible epoxy knowing it will hold up to sanding, vibrations, and time.

Key Features

• Maximizes Filler Adhesion: Acts as a chemical tie-coat that modifies the raw plastic surface, allowing standard body fillers and flexible epoxies to bond securely without delaminating.

• Essential for Olefin Plastics: Specifically formulated to tame low-surface-energy plastics such as TPO (Thermoplastic Olefin), TEO, and PP (Polypropylene), which make up the vast majority of modern automotive bumper covers.

• Prevents Feather-Edge Peeling: Eliminates the common and frustrating issue of filler lifting or flaking off at the delicate, tapered edges when sanding and blocking your repair.

• Built-In Applicator Brush: The 4 oz. can features a convenient dauber brush integrated into the cap, ensuring quick, mess-free application the moment you open the lid.

• Fast and Efficient: Goes on smoothly with a single wipe of the brush and flashes off quickly, drastically speeding up the prep phase of your plastic repair workflow.

Ideal For

• Bumper Cover Repairs: Prepping modern TPO and Polypropylene bumper covers before skim-coating deep road rash or gouges with flexible body fillers (such as Polyvance Flex Filler).

• Plastic Welding Prep: Acting as a crucial adhesion step over repaired areas and welded tears to ensure cosmetic fillers stick permanently to the surrounding base plastic.

• Powersports & ATV Plastics: Ensuring body filler bonds securely to flexible, raw plastic motorcycle fairings, ATV fenders, and snowmobile cowls.

Common Questions

Q: Do I need this if I am just painting the plastic?
A: If your primary goal is to apply automotive paint or primer directly to raw plastic without using any body filler, Polyvance recommends their Plastic Magic Adhesion Promoter instead. Filler Prep is chemically optimized specifically to give body fillers and epoxies a superior bite onto the plastic surface.

Q: How do I apply it?
A: First, ensure the plastic surface is completely clean, degreased, and properly sanded. Unscrew the cap and use the built-in dauber brush to apply a light, even coat over the bare plastic where the filler will be spread. Allow the Filler Prep to completely flash off and dry before applying your body filler.

Q: Why does filler peel off TPO bumpers in the first place?
A: TPO (Thermoplastic Olefin) and Polypropylene are waxy, low-surface-energy plastics. Much like trying to stick tape to a non-stick frying pan, standard automotive fillers cannot physically grab onto these materials on their own. The Adhesion Promoter alters the surface tension of the plastic, creating an anchor profile for the filler to lock into.

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