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UPVC MANUFACTURING PROCESS

I. PURPOSES:
 
- The regulations are introduced to unit the manufacturing of uPVC door and window 
 
- To guarantee the accuracy and standards in manufacturing door and window 
 
- To clarify responsibilities and rights of individuals and departments
 
II. GENERAL REGULATIONS
 
A. Requirements for workers
 
- Trained about company's regulations
 
- Trained about the enterprise culture
 
- Trained about safety regulations
 
- Trained about specification and technological standard of products
 
- Trained about the manufacturing technology
 
- Trained about technical drawing
 
- Trained about the machinery operation
 
- Trained about the usage of hand-held tools and materials
 
- Trained about regulations of product’s preservation, packaging and delivery
 
III. CUTTING DEPARTMENT
 
1. Profile cutter:
 
A. In order to well prepared for producing:
 
- Check design drawing 
 
- Tidily arrange profile in the right place and protect them from scratches, do not use broken or scratched profile and report to the manager about faulty one
 
- Check the operation of machinery and the occupational safety condition before cutting plastic
 
- Carefully read and understand technical drawings
 
- Calculate the cut formula
 
- Obey principals of the machinery technical operation in cutting process
 
2. Reinforced steel cutter
 
- The preparation for steel cutting is similar to plastic cutting
 
IV. DRILLING DEPARTMENT
 
1. Drainage drilling
 
- Follow the technical drawing to drill a drainage hole for different doors with internal or external rotation
 
- The process of drilling:
 
+ Use the drill bits from Ø4 to Ø5 mm
 
+ The length of drilling is 30 mm
 
3. Lock drilling
 
- Drill a lock hole before installing reinforced steel
 
- Drill a doorknob hole
 
4. Reinforced steel screwing
 
V. WELDING DEPARTMENT
 
1. Welding: Receive plastic bars from drilling department, check the quantity, quality and size of plastic bars… Sort plastic bars in set and weld to join the whole set.
 
Check the temperature and time welding to ensure the joining quality
 
After welding, check the welding points
 
2. Fixing of mitre joint: Use machine for the first step and then manually clean
 
VI. HARDWARD ATTACHMENT DEPARTMENT
 
Requirements:
 
- Check products receiving from welding department
 
- Understand about metal accessory in the manufacture
 
- Understand the technical drawings and the door rotation on technical drawings
 
Process of the assemble
 
- Define the door rotation and drill the hinge
 
- Install the lock fixation
 
- Install wheels for sliding doors
 
- Install shock absorber for sliding doors
 
- Install doorknob
 
VII. GLAZING DEPARTMENT
 
1. Insert gasket into the door and window frames
 
- Glass gasket: is installed inside of door and window frames
 
- Frame gasket: is installed to door leafs and rotating doors
 
- Feather gasket: is installed to sliding doors
 
2. Glazing: Set glass panes into the door and window frames, bind the splints