What are the requirements for Hot Air Non-woven Fabric energy standards and quality control?

The standards and quality control requirements of Hot Air Non-woven Fabric mainly include the following aspects:

Raw material requirements
Fiber quality: synthetic fibers or natural fibers that meet the quality requirements should be used to ensure the purity, strength, length uniformity, etc. of the fibers.
Use of additives: if whitening agents, antioxidants, etc. are used, it must be ensured that they meet the relevant standards and will not have an adverse effect on the quality of the final product.
Process control
Hot air spunbond process: in the production process of hot air non-woven fabrics, temperature, wind speed, fiber laying density, etc. must be strictly controlled to ensure the uniformity and strength of the product.
Pressure and hot air temperature: ensure that the temperature of the hot air is appropriate to ensure that the fibers can melt under appropriate conditions without damage to form a strong non-woven fabric.
Fiber stacking and density control: by controlling the laying density of the fibers, the surface of the fabric is ensured to be flat and seamless, and at the same time, areas that are too thin or too thick should be avoided.
Product quality requirements
Strength requirements: through tensile tests, tear tests, etc., ensure that the non-woven fabric has sufficient mechanical strength.
Breathability: Hot air nonwovens are usually required to have a certain degree of breathability, especially in the application of hygiene, medical and other industries, which need to meet specific breathability standards.
Weight: Generally, the weight per square meter is strictly controlled to meet the design specifications.

Thickness: The thickness needs to be uniform and should not exceed the standard deviation range.
Heat resistance: The product needs to undergo a certain heat treatment to ensure that it can withstand high temperatures without deformation or damage.
Environmental protection and safety
Harmlessness: Hot air nonwovens are widely used in the medical and health fields, so the use of substances harmful to the human body should be avoided during the production process to ensure that the final product meets environmental protection standards.
No harmful substances: such as heavy metals, toxic gases, etc., should be tested to ensure that the product meets international environmental standards (such as RoHS, REACH, etc.).
Test standards
ISO 9001: Requirements for quality management systems to ensure that the production process meets quality standards.
ISO 12945: Specific technical requirements for spunbond nonwovens, including tensile strength, tear strength, breathability, etc.
ASTM F1670/F1671: used to evaluate the performance of nonwoven fabrics in medical protection, including liquid barrier properties.
GB/T 22614-2008: China's nonwoven fabric standard, covering the classification, test methods, and technical indicators of hot air nonwoven fabrics.
Final inspection
Appearance inspection: Check whether the product is flat and has no obvious defects, such as holes, wrinkles, foreign matter, etc.
Size and specification inspection: Ensure that the product meets the design size and performs necessary trimming and shaping.
Packaging and storage: The finished product must be packaged as required and stored in an appropriate manner to avoid moisture, contamination or mechanical damage.
The production of hot air nonwovens involves multiple quality control links. From raw material selection to finished product testing, each step needs to be strictly controlled to ensure that the product meets the standards and meets the needs of end users. If you have specific standards or industry requirements, you can also refer to relevant industry certification and standard requirements.