Fenshui Oilpaper Umbrella

Fenshui Oilpaper Umbrella

The Fenshui oilpaper umbrella is a geographical indication protected product.

　　Quality and Technical Requirements for Fenshui Oilpaper Umbrella

　　I. Raw Materials

　　1. Bamboo: Nan bamboo grown within the production area for over three years and water bamboo without water grooves grown for over two years.

　　2. Wood: Rock tung wood, pine wood, and camphor wood that meet national forestry management regulations.

　　3. Paper: Handmade cotton paper made from paper mulberry bark.

　　4. Tung oil: Tung oil produced within the production area.

　　5. Thread: Colored cotton thread suitable for umbrella making.

　　II. Manufacturing Process

　　1. Process Flow: Material selection → Umbrella component production → Assembly → Stringing and netting → Shaping and baking → Oiling.

　　2. Key Points of the Process:

　　(1) Production of umbrella components:

　　① Umbrella ribs: Even width of umbrella ribs, no perforation in the rib grooves. Uniform drilling and beveled cuts on the rib lining.

　　② Umbrella blocks: Equally spaced grooves, soaked in water for ≥24 hours.

　　③ Umbrella shaft: Using the middle section of water bamboo, with elastic joints.

　　④ Umbrella surface printing: Stone printing, hand-painting, leaf insertion, etc.

　　(2) Assembly: Assembling umbrella ribs, blocks, shafts, etc., into the umbrella frame.

　　(3) Netting: Evenly spaced strands, moderate mesh distance.

　　(4) Stringing: Full stringing or half stringing.

　　(5) Shaping: No soap bubbles on wet paper, aligned printed patterns.

　　(6) Binding: Smooth and secure tying.

　　(7) Baking: Baked at 70°C to 80°C for 20 to 24 hours.

　　(8) Oiling: Using refined tung oil, applied manually by shaking.

　　III. Quality Characteristics

　　1. Sensory Characteristics: Concave-mounted umbrella surface, classical patterns, bright and vivid colors, good light transmittance.

　　2. Physicochemical Indicators:

　　Item

　　 Specifications

　　Waterproof Performance

　　 When the umbrella is opened and exposed to moderate rainfall of 8–15 mm per hour for 12 consecutive hours, it shall not become soft, discolored, or have its frame fall apart.

　　Heat Resistance

　　 When exposed to sunlight at 40°C–43°C for 6 hours, the umbrella shall not deform, stick together, or exhibit paper cracks exceeding 5 mm in length or more than 3 occurrences.

　　Wind Resistance

　　 When placed against an 8–13.8 m/s (Level 6) wind for 6 hours, the canopy vent shall remain intact, the handle shall not break, and the ribs shall not flip upward.

　　Number of Fault-Free Open/Close Cycles

　　 The umbrella shall withstand 4,000 open/close cycles without flipping, groove damage, or thread breakage.

　　 3. Safety and Other Quality Technical Requirements: The product’s safety and other quality technical requirements must comply with relevant national regulations.

　　Fenshui Oilpaper Umbrella

　　 The currently administered administrative area of Fenshuiling Town, Jiangyang District, Luzhou City, Sichuan Province

　　 “Letter from the People’s Government of Jiangyang District, Luzhou City Regarding the Proposed Scope for Geographic Indication Product Protection of Fenshui Oilpaper Umbrella,” Luzhou Gov. Letter [2013] No. 160

　　 Sichuan (Regional) Local Standard: DB510501/T02–03–2012 “Fenshui Oilpaper Umbrella”