The invisible swelling defects at the time of shipment are related to moisture residue and insufficient substrate treatment.
Blistering is a defect where the coating film swells, which may not be visible at the time of shipment but can be discovered by customers weeks or months later. The causes include residual moisture, oil, corrosion products in the substrate, instability of chemical treatment, and insufficient adhesion. Since corrosion and expansion progress beneath the coating film, it cannot be completely prevented by visual inspection alone. It is important to review the drying confirmation after pretreatment, rust removal, curing conditions, and storage time management.
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basic information
Metal coating, blistering, paint film blistering, moisture retention, poor adhesion, corrosion, pretreatment, automotive parts.
Price range
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Applications/Examples of results
Automotive parts, construction hardware, industrial machinery, blister prevention for metal products, prevention of paint film blistering.
Company information
We are not just a "subcontracted painting factory." Established in 1958, our company has a foundation of painting technology and also specializes in chemical treatment, stripping, and cleaning, functioning as the "external surface treatment department" in your organizational chart. Based on our philosophy of "preparation is eight-tenths of the work," we emphasize participation from the "upstream process" before the drawings are finalized. We conduct test painting on a wide range of metals and difficult materials, and we produce the entire process from assembly, packaging, to delivery, thereby reducing your management workload. Additionally, by being able to perform zinc phosphate treatment in-house, we achieve stable painting quality. Furthermore, our micro-heating stripping technology, which does not use chemicals, maintains the electrical state of the "jigs (hangers)" that influence painting quality. Our approach of "pre-treatment determines painting quality" ensures the stability of the paint film during mass production. Rather than simply "applying specified standards," we work backwards to achieve optimal painting specifications and prevent scratches during transportation, sparing no effort in thorough discussions from the outset. This diligent preparation is the shortest path to preventing rework and minimizing total costs. From the development stage, please utilize the expertise of our specialists as part of your production line.
