Protection of the paint coating (LAC) of the car becomes a priority for every owner who wants to keep the presentable appearance of the car. The question of how to properly make film on the body, worries both beginners in deleting and experienced craftsmen looking for ways to improve the quality of work. Modern polyurethane materials allow you to create an invisible shield that takes on the blows of gravel, sandblast and small stones, keeping the factory paint in perfect condition.
The pasting process requires not only high-quality material, but also strict adherence to surface preparation technology. Errors at the washing or degreasing stage can negate all efforts, leading to detachment of the coating or the appearance of bubbles. In this article, we will discuss all stages of work, from the choice of antigravel until the final polishing so you can do the job professionally.
It is important to understand that the market offers different types of materials, each of which has its own installation features. Vinyl. Films are more often used to change color, while polyurethane The PPF is designed to provide strong physical protection. The right choice of material directly affects the durability of the coating and its ability to heal itself after small scratches.
Material choice: vinyl or polyurethane
Before starting work, it is necessary to clearly define the objectives of protection. If your task is to radically change the color or add a matte effect, then vinyl films will suit you. However, if the question is how to make the film for maximum protection against chipping, then polyurethane (PPF) is the leader. This material has a high elasticity and thickness, which allows it to extinguish the energy of the impact.
Modern polyurethane materials often have a self-healing effect. When heated in the sun or hot water, small scratches on the surface PPF films They're dragging it back, bringing back the gloss. Vinyl can not boast of such properties, it is more a decorative element than armor.
- 🛡️ Polyurethane (PPF): High strength, transparency, self-healing effect, service life up to 10 years.
- 🎨 Vinyl: A huge selection of colors, smaller thickness, protection from scratches, but not from serious impacts, service life of 3-5 years.
- 💰 Cost: Polyurethane is much more expensive than vinyl, but pays off by preserving factory paint.
⚠️ Warning: Do not try to glue vinyl film on the sharp edges of the body with a strong stretch - it can burst or unstuck, since it does not have a memory shape of polyurethane.
Tools and workplace preparation required
The quality of the pasting depends on the preparation by 50% and only on the hands of the master. To make the film properly, you will need a specialized tool. Conventional household supplies will not work as they can damage the material or leave a pile. The workplace should be clean, well-lit and, preferably, closed from dust and drafts.
Temperature also plays a critical role. The optimum temperature in the box should be from +18 ° C to +24 ° C. At lower temperatures, the adhesive on the film may not be activated, and the material itself will become stiff and brittle. At too high temperatures, the glue can grab instantly, leaving no time for positioning.
The list of mandatory equipment includes:
- 🔫 Building hair dryer: For warming the film when pasting complex elements and activating the glue.
- 🔪 Specialized knives: For example, Olfa or Swann-Morton with vinyl blades (a dull angle of sharpening) so as not to cut paint.
- 💧 Pulverizers: At least two: one for mounting solution, the second for clean water.
- 🧽 Raquel: It is hard for water distillation and soft (suede) for final smoothing.
☑️ Ready for pasting
Technology of preparation of the car body
The most important stage in which you decide how to make the film to keep it for years is the preparation of the surface. Any grain of sand left under the film will become the center of detachment. First, the car goes through a thorough wash using active foam and a two-pin method to wash away the underlying dirt.
Then comes the deep cleaning phase. Bitumen stains, insect traces and metal dust must be removed. This is done with special chemical cleaners (e.g., Bitum cleaner or Iron remover). After chemistry, the body is necessarily polished with a clay napkin or clay bar to pull the contamination from the pores of the varnish.
The final touch is degreasing. The surface is wiped with an alcohol solution or a special degreaser. This removes residues of polishes, waxes and oils, ensuring maximum adhesion of the glue. If you skip this step, the film may not stick or go bubbles after a month.
Use a backlit magnifier after the clay stage to see the smallest defects that are not visible to the eye. They need to be removed before the start of the staining.
The process of pasting: step-by-step instructions
There are two main methods of pasting: dry and wet. The dry method is suitable for small elements and experienced craftsmen, it is faster but requires perfect skill. The wet method (using mortar) is more forgiving (forgiving errors) and allows you to adjust the position of the film. Consider the universal wet method, which is most often used for high-quality protection.
First, the sculpting is done. If you are working with a kit, the film already has the desired shape. If the pasting goes into a manual (bulk), the material is laid out on a part with a margin of 2-3 cm at the edges. Then the surface of the part and the film itself are abundantly moistened with an mounting solution (water with a shampoo drop or special fluid).
After positioning, water discharge begins. The movement of the rakel should go from the center to the edges, displacing the liquid. It is important not to press too hard on dry areas so as not to damage the adhesive layer. Difficult places, such as arch and bumper, require a dryer to warm up to 60-70 ° C to stretch the material without tearing.
| Work segment | Fryer temperature | Action. | Risk of error |
|---|---|---|---|
| Positioning | Not warming. | Shifting the film over wet | Shifting glue |
| Drawing water | 40-50°C | Raquel smoothing | Scraps of film |
| Stretching | 60-70°C | Tightening complex shapes | The material rupture |
| Finish | 80-90°C | Activation of glue | LCP overheating |
⚠️ Warning: When working with a hair dryer, keep it at least 10-15 cm from the surface. Overheating can lead to clouding of the film or damage to the paint coating of the car.
What to do if there is a bubble of water under the film?
If the bubble is small and is located at the edge, it can be gently punctured with a thin needle and drive the water out. If the bubble is in the center and large - it is better to glue the element, since mold or detachment may develop with it.
Working with complex elements and hiding edges
One of the main questions about how to make the film properly concerns the edges. Professional pasting involves turning the film on the inside of the parts so that its edge is hidden from eyes and external influences. This requires high accuracy when cutting.
When working with sharp edges (for example, the hood or trunk lid) you need to be extremely careful. The knife blade should go at an angle of 90 degrees to the surface, touching only the film. Using knives with a blunt sharpening angle (such as vinyl blades) reduces the risk of cutting the varnish to metal.
Partial disassembly is often required to hide the edges on the doors and trunk lid. Removal of handles, moldings or headlights allows you to bring the film deep under the element, making it almost invisible. This increases the time of work, but the result is worth it - the edges are not clogged with dirt and are not jacked up at the sink.
- 🚪 Doors: Remove the handles and mirrors for the perfect bend.
- 💡 Optics: It is better to remove or carefully protect the adjacent elements.
- 🔩 Fixtures: Carefully work around bolts and rivets using a scalpel.
Drying, polymerization and film care
After the completion of the process, the process does not end. The film takes time to fully polymerize the adhesive and evaporate the residual moisture. This process usually takes 24 to 48 hours depending on the ambient temperature. During this period, it is better not to operate the car intensively and not to wet.
In the first days, there may be mild turbidity or "shagrene skin" - this is normal for some types of polyurethane. The effect should pass on its own within 1-2 weeks under the influence of the sun. If the turbidity remains longer, the installation technology may have been disrupted or poor-quality material used.
Caring for a glued car is practically no different from caring for a regular LKP, but there are nuances. It is not recommended to use aggressive polishing with abrasives, as you can damage the protective layer of the film. For washing, it is better to use a two-phase shampoo and soft sponges.
Complete adhesion of the adhesive and crystallization of the protective layer take up to 30 days. In the first month, avoid high pressure sinks at an angle of 90 degrees to film.
Can I put the film on the chipped paint?
Glue the film on top of chips can be, but this will not hide the defect, but preserve it. Moreover, under the film, the chips can begin to rust if the metal is bare. It is recommended to pre-paint chips or make a local polish before pasting.
How long does a polyurethane film last?
Quality Polyurethane (PPF) lasts from 5 to 10 years. The term depends on the operating conditions, frequency of washes and quality of care. Vinyl films last less – usually 3-5 years, after which they can lose elasticity.
Do I need to take film for the winter?
No, you don't need to take film for the winter. A good polyurethane is designed for a temperature range from -40 ° C to +80 ° C and more. It retains elasticity even in severe frosts, continuing to protect the body from reagents and sand.