China's development of melt-blown nonwoven products have more than 10 years of history, in this 10 years in the development of many characteristic product, here are some meltblown product applications:
Thermal insulating products.
As a result of meltblown nonwovens in fiber belongs to superfine fiber, weight is light, soft, warm and good, at the same time of melt-blown nonwoven fiber gap between small and large porosity, permeability is very advantageous, this decided the melt-blown nonwoven fabric is very good insulating material.
The meltblown warm materials domestic development is very rapid, many domestic enterprises have the meltblown fibers used for this purpose. Tianjin TEDA ecological cotton is actually the meltblown fibers. Fig 2 TEDA ecological cotton morphology, it is on the two layer of meltblown cloth with a spacing between laminated special structure of the bat, which has more air gap, the meltblown warm materials thermal performance is better. Tianjin TEDA group ecological cotton has become the country's well-known brands. This material has been subjected to the military logistics department 's favor, some forces have used meltblown fiber insulation materials production clothing sets equipped with soldiers.
In addition to being garment interlining keep warm, melt-blown fiber material can also be wrapped in steam pipeline, pipelines or other adiabatic storage apparatus appearance as efficient insulation layer, the heat or cold. The United States of America 3M company has developed a series of thermal insulation products for a variety of purposes for. Its core technology is to meltblown fiber as basic material. But if all the meltblown fibers, at the beginning of good insulation, the meltblown material after a period of time after the use of easily compacted, air gap without, insulation effect will be substantially reduced, so must the meltblown fibers blended with certain amount of coarse denier polyester fiber, the flocculus maintained uniform distribution air gap. Potter developed innovative technology, allegedly, also can do this.
The filter material
Melt blown nonwoven due to its fiber diameter of fine, large specific surface area, pore, porosity higher characteristic extremely suitable for liquid solid separation or gas-solid separation filter material. The air filter can be suitable for high above the filter. Such as insurance and medical masks, gas masks, filter dust, bacteria and other harmful particles, can also be used for air conditioning, car air filter and an air filtering, especially when the meltblown fibers treated by the electret air filtration, the filtration efficiency can be over 99%, and even up to 99.999%, can be suitable for electronic equipment, ultra-clean workshop and other high requirements of the places of air purification, 2003, in order to prevent SARS infection, meltblown nonwovens have hot, because by the polarization of melt-blown nonwoven fabric as a mask or face mask can effectively prevent bacterial virus invasion.
In the past, some high demand for air filter commonly used fine glass fiber filter material, in recent years the research shows that: the glass is easy to break off, is harmful to the human body, and may be carcinogenic. Who put the glass under the IARC IB, is a possible carcinogen. Another glass cannot add static charge in polarization, so over time, melt-blown filter material is applied more and more widely.
The oil absorbing materials
China 's petroleum consumption, consumption has accounted for second of the world. China 's marine transport industry develops quickly. Tanker oil spill accidents and ship oily sewage discharge occurs frequently, serious pollution of water quality, especially the coastal ports, bays and coastal waters is more such, bring serious consequences to the ecological environment.
Polypropylene melt-blown nonwoven fabric because of its ultra-fine fiber structure, having a hydrophobic oleophilic, light specific gravity, water absorption rate of 0.01%, insoluble in the oil and acid and alkali resistance and other characteristics, its oil can reach 20 times to 50 times its own weight, has a high absorption speed, range after the long-term floating on the water surface deformation, water oil displacement performance is good, can be repeatedly used for long-term storage and other characteristics, is the field of welcome.
Europe and the United States, Japan and other countries have extensive use of meltblown oil sorbent material for plant oil processing, marine environmental protection, sewage treatment and other oil spill and pollution control, and have specific regulations, requirements for ships and port must be configured with a certain amount of meltblown oil sorbent material to prevent the pollution of the environment.
In our country it has caused relevant aspects of attention, some seaports are said to have started with some of meltblown oil batts, oil grid, the suction belt and other products, for the necessary use, some restaurants, including family uses oil products are also gradually extended. But to the vessel and harbor, must be equipped with a certain number of meltblown oil sorbent material to prevent the pollution of the environment.
The medical and health supplies
Use of meltblown nonwovens and other composite materials can be made of medical and health supplies, usually meltblown nonwovens and breathable, moisture permeable film composite, but more commonly used is of spunbond and meltblown fabric composite is SMS, SMMS etc.. Spunbonded nonwovens composite cloth mainly to have sufficient strength, and fusion spray cloth to prevent a bacterium or virus blood, dirty liquid into the human body, the composite products can be made disposable or time limit the use of protective clothing, clothing, masks, operation operation hole towel, bed sheets, curtains and other ward. These products can be carried out according to the needs of antistatic, anti-alcoholic, anti plasma, water repellent, oil, dirt resistance acid and alkali resistance, flame retardant, anti ultraviolet radiation and other special processing. The front has also mentioned the melt-blown non-woven fabric after electret processed can strengthen its shield barrier, bacterial, virus, dirty liquid action, use its composite cloth protection products can prevent the patient and medical care personnel between the cross infection, can also prevent transmission between patients and healthy persons.
In 2003 the SARS epidemic in our country, melt-blown nonwoven barrier, the shielding effect is widely recognized, meltblown nonwovens in medical and health applications are highly regarded, promoted the rapid development of melt blown nonwovens, along with our country's medical career, melt-blown non-woven fabric and its composite products in the medical field the application will be further developed.
The industrial and household dusters
Industrial and household use wipe is the most rapidly developing market, as a result of melt-blown nonwoven fabric detergency strong, soft to the touch, not be damaged with the surface, so it is very promising. Some foreign enterprises of melt-blown nonwovens for making baby wipe wipe wipe,
The lead-acid battery separator
Polypropylene melt-blown nonwoven fabric after treatment can be used as a battery separator, China's annual consumption of about 6000 tons of above. As a result of melt-blown nonwoven fabric having a pore size, high porosity, small resistance, light weight, can be sealed bag of use, and the material is relatively cheap to replace the PVC partition. At present this kind of battery separators melt-blown fabric is mainly used for intermittent production equipment.
The sound insulation product
Meltblown nonwovens can absorb sound waves. So it can be used in automotive, residential and ultra quiet room sound insulation materials, such as: car computer box, senior audio layer, will need to adopt the meltblown layer to isolate, said: this application has just started, there is great development space.
