Protective coating cured by pulsed IR radiation

By precisely applying fluid coatings and using pulsed infrared radiation curing technology, the problems of stone impact damage and moisture penetration on vehicle paint surfaces have been solved, achieving efficient and uniform application of protective coatings and thickness control.

CN120916850APending Publication Date: 2025-11-07PPG INDUSTRIES OHIO INC
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Patent Information

Application Number
CN202480018951.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-03-15
Filing Date
2024-03-12
Publication Date
2025-11-07

AI Technical Summary

Technical Problem

Existing technologies for protecting vehicle paint suffer from stone impact damage, abrasion, and moisture penetration. Furthermore, conventional spraying techniques are prone to overspraying and uneven application, making it difficult to apply a protective coating with a dry film thickness of 75μm or greater in a single application.

Method used

A protective coating is formed by precisely applying a fluid coating composition and curing the coating using pulsed infrared radiation with a peak wavelength in the range of 3 μm to 10 μm and a pulse duration of less than 100 μs.

Benefits of technology

It achieves drip-free or sagging coating application, with dry film thicknesses ranging from 75μm to 200μm, protecting vehicle paint surfaces from mechanical damage and moisture erosion, without the need to mask uncoated areas.

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Abstract

The present disclosure relates to a method of applying a protective coating to a substrate, the method comprising applying a fluid coating composition on at least a portion of a surface of the substrate by a precise application substantially without overspray, and applying pulsed infrared radiation to form a cured coating. Further disclosed is a substrate coated by said method and the use of a coating composition for forming a protective coating on at least a portion of a substrate by curing the applied composition by pulsed infrared radiation. The present disclosure is particularly useful for protecting a paint surface of a vehicle from stone hit.
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