The entire process of car color changing film construction technology: from vehicle condition inspection to edge sealing treatment

The quality of color changing film construction depends on the implementation of standardized processes, and any negligence in any link may lead to edge warping, bubbles, or detachment. The following is the construction SOP (Standard Operating Procedure) for a certain chain store:

1. Vehicle condition inspection and pre-treatment

Use a paint film thickness gauge to check the condition of the original car paint and record the locations of scratches and dents.

Degrease plastic parts (such as rearview mirror shells) to avoid adhesive residue.

Dismantle prominent components such as door handles and lettering to reduce construction difficulty.

2. Vehicle body cleaning and protection

Adopting the process of "two water washes+clay polishing" to remove iron powder and oxide layer.

Cover the gaps between the car windows and sheet metal with 3M masking film to prevent moisture from seeping in during baking.

3. Cutting and shaping of film materials

Using a CNC film cutting machine, the error is controlled within ± 0.5mm.

For parts with larger curvature (such as A-pillar), a combination of "dry baking+wet baking" process is used, with a temperature gradient controlled between 120 ℃ and 150 ℃.

4. Film application and exhaust

Using the "positive roll method" for construction, the film slowly adheres to the vehicle body at a 15 ° angle.

Use imported scraper blades (such as the American Chemical Guys brand) to exhaust at a 45 ° angle, with pressure controlled between 0.3-0.5MPa.

5. Edge closing and quality inspection

The edge treatment adopts the "sandwich" edge wrapping method, embedding the film into the rubber sealing strip.

During the quality inspection process, a strong flashlight is used to check for residual bubbles, with a qualified standard of no more than 3 bubbles with a diameter of ≤ 1mm.

Typical case: During the color change construction of a Tesla Model 3, the film material broke due to the failure to remove the tail wing. The technical team adopts a "segmented bonding+local heating" solution to achieve perfect edge finishing. This case highlights the importance of component disassembly.