Dear Joe,

我们目前使用一个主要的粉末生产商提供的“午夜黑色”皱纹粉末涂料。首批涂层固化后，可以应用第二种触控外套吗？第一件涂层在清洁的HRPO（热轧，腌制和油）钢上施加。第二次触摸外套不粘附到第一件外套并轻松剥落。任何意见，建议？

问候，

loyd字段

德克萨斯州

Dear Loyd,

Recoating wrinkle finishes can be a headache. This product is epoxy based, which makes the task even more difficult as epoxies cure “hard” and are less receptive to recoating. Your best option is to scuff sand the entire surface to be recoated, blow it off, then solvent wipe with acetone or MEK. This may provide the adhesion you need.

Using a polyester-based wrinkle is another option. These are not as hard as the epoxy wrinkle, which should make recoating somewhat easier. However the polyester wrinkles are more sensitive to substrate surface defects and pretreatment streaking. HRPO steel can sometimes exhibit imperfections that will probably interfere with the development of a polyester wrinkle finish.

Therefore, I would first try the scuff sanding, followed by solvent wiping. If this doesn't work, you may be relegated to stripping the defective parts, cleaning them and powder coating a virgin surface.

Good luck with sorting this out. Let me know how things progress.

最好的祝福，

乔

Have a question for Joe Powder?电子邮件kevinbiller@yahoo.com.。And be sure to listen to the Ask Joe Powder “Powdcast” for all the latest news, insights and technology in the powder 188BET竞彩coatings industry.点击这里倾听！

Dear Joe,

我们目前使用一个主要的粉末生产商提供的“午夜黑色”皱纹粉末涂料。首批涂层固化后，可以应用第二种触控外套吗？第一件涂层在清洁的HRPO（热轧，腌制和油）钢上施加。第二次触摸外套不粘附到第一件外套并轻松剥落。任何意见，建议？

问候，

loyd字段

德克萨斯州

Dear Loyd,

Recoating wrinkle finishes can be a headache. This product is epoxy based, which makes the task even more difficult as epoxies cure “hard” and are less receptive to recoating. Your best option is to scuff sand the entire surface to be recoated, blow it off, then solvent wipe with acetone or MEK. This may provide the adhesion you need.

Using a polyester-based wrinkle is another option. These are not as hard as the epoxy wrinkle, which should make recoating somewhat easier. However the polyester wrinkles are more sensitive to substrate surface defects and pretreatment streaking. HRPO steel can sometimes exhibit imperfections that will probably interfere with the development of a polyester wrinkle finish.

Therefore, I would first try the scuff sanding, followed by solvent wiping. If this doesn't work, you may be relegated to stripping the defective parts, cleaning them and powder coating a virgin surface.

Good luck with sorting this out. Let me know how things progress.

最好的祝福，

乔

Have a question for Joe Powder?电子邮件kevinbiller@yahoo.com.。And be sure to listen to the Ask Joe Powder “Powdcast” for all the latest news, insights and technology in the powder 188BET竞彩coatings industry.点击这里倾听！