SMT steel mesh wiping paper material characteristics: double-sided wiping process diagram

The scientific and professional-grade SMT steel mesh wipe paper with material configuration is mainly equipped with three substrates: plain, mesh and UFP. The plain weave material adopts a precision-matched 55% wood pulp and 45% polyester composite process. This innovative combination not only maintains the liquid absorption characteristics of natural fibers (can absorb 0.15 ml of liquid per square centimeter), but also enhances the tear strength of the material through polyester components (laboratory data shows that the number of wear resistance is increased by 40%). This double-sided composite structure is known as the "precision instrument protection layer" in the industry and has been widely used in the SMT production lines of companies such as Samsung and Foxconn.

The double-sided functional analytical front of composite structure (polyester surface): A high-density weaving process is used to form a micron-level filter mesh hole. The actual data show that its oil pollution interception efficiency reaches 98.5%. The unique pressure dispersion design of this surface can withstand 2.5kg/cm² of wipe pressure. In the Huawei 5G base station PCB board cleaning test, a single sheet of wipe paper can complete 50 effective cleaning cycles.

Back (wood pulp surface): A 0.03mm ultra-thin bonding layer is achieved through nano-scale fiber treatment technology. Observed by Zeiss electron microscope, its surface smoothness reaches Ra0.8μm. In the supporting application of ASM patch machine, this structure has successfully reduced the steel mesh scratch rate from the industry average of 0.7% to 0.12%.

Accurate identification and standardized operation guide for front and back identification technology points: Tactile identification method: 

The wood pulp surface has a cashmere texture (friction coefficient 0.35), and the polyester surface has a silk touch (friction coefficient 0.18). Optical identification method: tilt 45° under a 4500K color temperature light source, and the polyester surface will produce a diffuse reflective spot of 5-10°.

Standardized operating procedures: 1. Pretreatment: Precisely spray isopropyl alcohol cleaning liquid in the central area of the polyester surface (recommended amount 0.2ml/cm²) 2. Positioning and fitting: Use three-point positioning method to form a vacuum adsorption state between the wiper and the steel mesh 3. Mechanical control: Apply a uniform pressure of 0.8-1.2N/cm² along the direction of the scraper movement 4. Trajectory optimization: implement the "S" type reciprocating wipe path, and the coverage area is increased by 30%.

Industry surveys on application misunderstandings and technological innovation show that 35% of production lines still have positive and negative mixed use, which directly leads to a 15-20% shortening of the life of steel mesh. The latest JIS Z-0237 standard clearly states that correct layering use can increase the utilization rate of wipe paper by 60%. A well-known automotive electronics manufacturer successfully reduced the downtime of the SMT production line from an average of 4.2 hours per month to 1.5 hours through standardized operations.

Experimental verification and quality control are recommended to conduct three-point tests in each batch: - Absorbing rate test (ASTM D5802 standard) - Fiber residue detection (IPC TM-650 2.3.34) - Surface impedance verification (IEC 61340-5-1 standard) By establishing these quantitative indicators, we can ensure that the steel mesh opening accuracy is always maintained within the industry gold standard range of ±3μm.

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