Paper hangers are not hard enough and are prone to cracking and deformation. I will teach you in one step!
With the deep penetration of environmental protection concepts, 🌱 paper hangers have gradually replaced traditional plastic and wooden hangers with their degradability and eco-friendly characteristics, becoming the mainstream display carrier in the clothing, shoes and hats industries. It not only has ♻️ environmental compatibility, but also can increase commercial added value through 🖨️ high-precision brand printing. However, if the ⚖️ load-bearing strength and 🔄 anti-creep performance of paper hangers do not meet the standards, it is very easy to fail due to stress cracking, plastic deformation and other failure phenomena, which seriously affect the use efficiency.
So, how to produce high-quality paper hangers with 💪 high rigidity and low deformation rate? The following are the key points of core production technology:
🌱 1. Substrate selection: the core factor that determines the mechanical properties of paper hangers
The manufacturing process of paper hangers belongs to the 🔧 physical composite process, so the intrinsic properties of the 📦 substrate directly determine the quality of the finished product. High-quality substrates can provide excellent 🛡️ flexural strength and elongation at break, ensuring that the hanger maintains structural integrity under rated load.
✅ Key technical indicators:
🌳 Select high-strength environmentally friendly paperboard with a quantitative ≥300g/㎡ and a tightness ≥0.8g/cm³
🔬 The substrate fiber must have an elongation at break of ≥6% to improve fatigue resistance
🛠️ 2. Composite process: coordinated control of equipment accuracy and process parameters
After the substrate is selected, it needs to be laminated to reach the designed thickness. This link directly affects the interlayer bonding strength and dimensional stability of the paper hanger.
✅ Key process parameters:
🏭 Use a fully automatic laminating machine with an accuracy of ±0.1mm to ensure uniform distribution of interlayer pressure (0.3-0.5MPa)
🧴 Use a water-based polyurethane adhesive with a solid content of ≥45%, and the interlayer peel strength must be ≥3N/15mm
👨🔧 Process parameter control: Glue coating amount 30-40g/㎡, lamination temperature 60-70℃, to ensure that the glue layer is fully cured
💧 3. Moisture balance and shaping treatment: to ensure the dimensional stability of paper hangers
The equilibrium moisture content of paper products is usually 💦 9%~15%, which is a key indicator for maintaining its morphological stability. Moisture will migrate during the lamination process, and it is necessary to use 🔥 precise drying and shaping process to return the moisture content of the finished product to the standard range and reduce the dimensional changes caused by environmental temperature and humidity fluctuations.
✅ Key technical parameters:
🌡️ Use hot air circulation shaping equipment to control the drying temperature gradient (60-80℃) to ensure that the moisture gradient is ≤2%
🧪 Performance test: The finished product must pass a 48-hour static load-bearing test at 1.5 times the rated load, and the deformation is ≤3mm
🏆 Mengcaii hangers: the technical benchmark for professional paper hanger manufacturers
As an industry leader, Mengcaii hangers have a complete R&D system, equipped with 🚀 precision production equipment and 🎯 standardized process flow to ensure that each batch of products meets the following requirements:
✔ ⚡ Rated load ≥10kg (no plastic deformation after 48h of hanging test)
✔ 🛡️ Flexural strength ≥150N, bursting strength ≥2000kPa
✔ 🌿 Meets EN13432 biodegradable standards
✔ 🎨 With Hyde offset printing, high-definition color management, and true display
We are committed to 🤝 promoting industry technology upgrades, and sharing substrate selection, process optimization, and technical support for free.