Saws
Cutters
Drills
Impact Wrenches
Torque Wrenches
Mining Waterjet Cutting Machine
Hammers
Scaler
Rammer
Grinders
Fan
Hoist
Winch
Pump
Assembly
Cutting
Drilling
Assembly
Hammer & Shovel
Grinding
Hydraulic Accessories
General Accessories
Events
Case Study
Industry News
source:Industry News release time:2021-08-13 Article author:Rosit Popular:Air band saw
This process of making meltblown cloth can be regarded as a high-tech version of cotton candy. First, melt the sugar crystals into a liquid, then use a rotating wheel to squeeze the sugar strands out, and use a stick to collect them. However, in our system, the molten polymer is forced to squeeze out through a narrow nozzle, and the molten high temperature poly( Propylene-ethylene) (230℃-390℃) is affected by high-speed airflow (480-800km/h) on both sides of the nozzle, stretched or compressed to form a molten polymer of multiple orders of magnitude, and then on the conveyor belt Cured to form a randomly arranged discontinuous microfiber network, which is compressed between heated rollers.
Among them, different raw materials, temperature (heating temperature, indoor and outdoor temperature difference), wind speed, pressure, spinneret extrusion volume, roll speed, etc. will affect the structure of the melt, resulting in different properties and different fields. Take the famous mask melt blown cloth as an example. It is a kind of melt blown mesh. About 40% of the melt is used as a filter medium for oil, air and liquid. In order to make the melt blown cloth have the characteristics of filtering bacteria and particles, a special process electrostatic electret is required
When the meltblown cloth is charged under a corona of hundreds to thousands of volts, due to the repulsion of static electricity, the fibers diffuse into the mesh, and the size between the fibers is much larger than that of dust, thus forming an open structure. When dust passes through the meltblown filter material, electrostatic interaction can not only effectively attract charged dust particles, but also capture polarized neutral particles through electrostatic induction. The higher the electrostatic potential, the higher the charge density, and the stronger the electrostatic effect.
Conventional fiber filter materials mainly rely on direct interception, Brownian diffusion, inertial collision, gravity deposition and other mechanical blocking effects to achieve the filtering effect. The electrostatic adsorption between the filter material and the particles is very weak, and the filtering effect is even worse for particles smaller than 1μM.
However, after corona discharge, the filtering performance of PP meltblown cloth is greatly improved. In addition to the original mechanical barrier effect, Coulomb force is also used to directly attract and capture charged particles in the gas phase, or to induce polarities in neutral particles and then capture them. Undoubtedly, the filtration efficiency will be greatly improved, and the filtration resistance will also be reduced.
Read recommendations:
AN31-7500 Hydraulic Torque Wrench
related articles
Using Chainsaws to Cut Snow?
2024-05-21What to do if the pneumatic wrench is weak
2022-12-19Hydraulic chain saw
2022-12-13Operation of the wrench
2022-12-06Introduction to the principle of pneumatic wrench
2022-11-28How to use the pneumatic wrench
2022-11-21Brief introduction to the principle of pneumatic wrench
2022-11-14Impact pneumatic wrench
2022-11-07Correct hydraulic wrench operation procedure
2022-11-01Hydraulic wrench torque pressure conversion
2022-11-01Field operation procedure of hydraulic wrench
2022-10-24Hydraulic radial plunger motor
2022-10-17The history of hydraulic motors
2022-10-17Principle of balance hydraulic wrench
2022-10-10The Price Factor of Smart Electric Torque Wrench
2022-10-10Introduction to the advantages of using intelligent electric torque wrench
2022-10-10The Price Factor of Smart Electric Torque Wrench
2022-10-10Classification and use of wrenches
2022-10-10hydraulic wrench pressure conversion
2022-10-10Introduction to the advantages of the use of intelligent electric torque wrench
2022-10-10Smart Electric Torque Wrench Selection Guide
2022-10-10Intelligent electric torque wrench for wind power generation
2022-10-09Uses of open-end wrenches.Pneumatic chainsaw
2022-10-08What are the driving parts of a hydraulic wrench and what they do
2022-09-30What are the driving parts of a hydraulic wrench and what they do
2022-09-23the commonly used wrenches
2022-09-22Introduction of several common wrenches
2022-09-21Application scope and daily maintenance method of hydraulic bolt tensioner
2022-09-20Characteristics of hollow hydraulic wrench and precautions for use
2022-09-19Characteristics and precautions of driving hydraulic wrench
2022-09-17Power Tools
DP61-090 Emulsion Two Hand Operation Drill
2021-06-15LH61-005 Emulsion Hoist
2023-06-29DB21-020 Pneumatic Rotary Drill Heavy Duty
2023-06-19AN22-4500 Pneumatic Torque Wrench (Straight Shank)
2021-06-03CS21-100丨Pneumatic Handheld Circular Saw
2021-06-08DC21-100 Pneumatic Core Drill
2023-06-20CB31-210 Hydraulic Band Saw
2023-05-18AN51-6000 Electric servo CNC Torque Wrench
2023-06-27AN11-10000 Electric servo CNC Torque Wrench
2023-06-27RC21-1500 Pneumatic Long Reach Scalers
2023-06-27OF27-270 Heavy Fixed Fan
2023-06-28DM21-023 Pneumatic magnetic drill
2021-06-15CB22-310 Pneumatic Band Saw - Stainless Steel Series
2023-06-16AN11-2000 Electric servo CNC Torque Wrench
2023-06-27LW21-010 Pneumatic Winch
2023-01-06DC31-400 Hydraulic Core Drill
2023-06-20AN71-20000 Torque Multiplier
2023-06-29CF21-005 Pneumatic Cutter
2022-12-12CD31-500 Hydraulic Concrete Chainsaw
2023-06-16CC21-430 Pneumatic Chainsaw (3.0 kw Series)
2023-06-14DP22-260 Pneumatic Column Drill
2023-06-19OF27-950 Heavy Fixed Fan
2023-06-28AW41-1500 Emulsion Impact Wrench
2020-06-13DB21-040 Pneumatic Rotary Drill Heavy Duty
2023-06-19AK22-065 Pneumatic C-Hog Ring Plier (2.0 coil)
2023-06-29AN31-7500 Hydraulic Torque Wrench
2023-06-27AN11-600 Electric servo CNC Torque Wrench
2022-12-20DA21-022 Pneumatic Angle Drill
2023-06-19LH61-001 Emulsion Hoist
2022-12-29CN22-3241 Nut Cutter丨Split-type Nut Cutter
2023-06-17Accessories
Filter assy.
2023-06-07Carborundum saw Blades
2023-06-06Carbide Hollow Bits丨DM816 Series
2023-06-06Pipe Fixed Clamps丨CB861-12
2023-06-06Carbide Inserts Twist Bits assy.丨DB83 Series
2023-06-07Carborundum Saw Chains
2023-06-06Alloy Drill Bits丨813 Series
2023-06-06Carbide Hollow Rail Drill Bits丨DM822 Series
2023-06-06Clamps
2023-06-06Sleeve KIT
2023-06-07Guide Bars
2023-06-06Regular Saw Chains丨CC811 Series
2023-06-06Ex-proof Sleeves KIT
2023-06-07Alloy Sleeves
2023-06-07Abrasive Blades
2023-06-07Drill Bit Extension Rods丨DC88 Series
2023-06-07Tool Bits
2023-06-07Diamond Saw Chains丨CC813 Series
2023-06-06Hydraulic Pump Station
2023-06-07Carbide Hollow Bits丨DM818 Series
2023-06-06Alloy Drill Bits丨812 Series
2023-06-06Ex-proof Sleeves
2023-06-07Split Hollow Drill Bits丨DC82
2023-06-07Alloy Saw Chains丨CC812/CC816 Series
2023-06-06Diamond Saw Chains
2020-06-13Platform Clamps丨CB863-19
2023-06-06Integrated Hollow Drill Bits丨DC81
2023-06-07Optional Accessories
2023-06-07Alloy Saw Blades丨CR816 Series
2023-06-06Alloy Saw Blades丨CR812 Series
2023-06-06