Possible problems in assembling UPVC doors and windows

What problems do you often encounter when assembling UPVC Profile doors and windows? LUMEI Profile analyzes for you:

1. Bending deformation of UPVC Profile before cutting

The bending deformation of UPVC Profile before blanking mainly occurs in two forms:

1. Bending deformation during production

2. Bending deformation of the profile due to improper storage or transportation

2. Discoloration of UPVC Profile

The discoloration of UPVC Profile is mainly due to improper process control and unreasonable adjustment of the formulation system during the production process. Secondly, it is caused by lead sulfide corrosion in the air.

3. Cracking of UPVC Profile

UPVC Profile cracks directly along the weld or gradually extends to the section after cracking along the weld, mainly due to poor welding technology, inaccurate cutting size or improper construction. The welding process mainly refers to the process temperature, blank size, and welding technique.

Fourth, the gap between the mating point of the bead and the fan is too large

The excessive clearance between the bead and the fan is mainly due to the improper production operation of the UPVC Profile production line. In this case, the customer should be replaced in time.

5. There is a clear yellow line at the contact between UPVC Profile and the rubber strip

The obvious yellow line in the contact between UPVC Profile and the rubber strip is mainly caused by lead sulfide produced by the reaction of sulfur and lead in the inferior rubber strip. In this case, the assembly factory should be advised to replace the high-quality rubber strip in time.

LUMEI Profile is a professional UPVC Profile manufacturer, specializing in the production of PVC door and window plastic steel profile products. The company pays attention to health and environmental protection, refined profiles, and provides users with a safe and healthy door and window profile system. Look forward to working with you!