The epidemic is now in full swing, and since coronaviruses are mainly spread by airborne droplets, wearing masks has become the most proven preventive measure. In order to ensure a timely supply for frontline healthcare workers and the public, many manufacturers of medical devices have given up their Spring Festival vacation to work overtime on production. Even so, according to the relevant statistics of the World Health Organization, during the epidemic, the huge national demand for masks and other protective supplies reached 100 times the normal value. In the recent news, SAIC-GM-Wuling, BYD, GAC Group and other car manufacturers have responded to the country's call to deploy their own or a collection of supplier resources began to switch to the production of masks.
To answer this question, we may want to take a look at the construction of masks, common masks in daily life are cotton gauze masks, non-woven masks, medical masks, daily protective masks, industrial dust masks of several kinds. In this, can resist the coronary virus N95 and surgical protective masks belong to the category of non-woven masks. Take N95 for example, its main structure consists of three layers, of which the outer layer and the inner layer in contact with the skin are mainly composed of non-woven fabrics, sandwiched between a layer of polypropylene fiber spray material.
As we all know, in order for vehicles to have better NVH levels and improve ride comfort, today's cars lay a large amount of soundproofing material on the door panels, engine compartment firewalls, and wheel arches. Currently applied in the car on the mainstream sound insulation materials are mainly three: glass fiber acoustic cotton, polyester fiber acoustic cotton and polypropylene fiber acoustic cotton. In this, glass fiber due to the manufacturing will be emitted in a large number of containing sulfur dioxide, nitrogen oxides and fluoride wastewater exhaust, environmental protection has a great negative impact, coupled with this material plasticity is poor, is not easy to install in the vehicle, and therefore has been abandoned by the majority of manufacturers.In contrast, polyester fiber is made of organic dibasic acid and dibasic alcohol polycondensation of polyester by spinning the synthetic fibers obtained, in essence, this material is also we often see in the clothing wash label "polyester" or PET fiber. This material emits fewer harmful substances during the production process, and as a clothing material does not cause any harm to the human body. However, due to the relatively high manufacturing costs and poor flame retardancy, most car manufacturers now usually make composites of polyester fibers with other materials to be used as acoustic foam.
Compared to the first two materials, the polypropylene polymerization of polypropylene as raw material spun and made of polypropylene fiber (also known as polypropylene) due to the production of easy, low-cost, and only the most widely used on the automotive acoustic cotton, the above automotive General Motors Wuling to the production of masks supplier - GAC DEFT Technology, for example, they are Production of one of the main products is used for door panels, A-pillars and wheel arches on the double-layer sound insulation cotton material.
Like medical masks, this sound-insulating cotton also consists of three parts, including an acrylic fiber nonwoven fabric on the inside and a fluffy sound-absorbing material in the middle. Therefore, theoretically speaking, this production of chemical fiber materials manufacturers to switch to the production of masks is not difficult. As for the sterile environment necessary for medical device production, DeFord
is currently working overtime to catch up on the construction of a clean room. When it is completed in February 2020, it is expected that 1.7 million (GB19083) medical-compliant masks will be produced every day with 12 production lines running at full capacity.
Benefiting from this, from the time Wuling put forward the proposal of switching to the production of masks to the start of the implementation of only five days, in addition to strong technical reserves and efficient communication, I believe that such "China's speed" and the local government departments in the channel to open up as well as the approval of the production qualification to deal with the rapid is also inextricably linked.
As of this writing, in addition to SAIC-GM-Wuling, Guangzhou Automobile Group has also joined the ranks of the masks, while BYD, which has a broader product line, has even used its own resources to engage in the production of disinfectant, hand sanitizer and other scarce materials, in addition to switching to masks.
Despite the outbreak of the epidemic, the negative impact of the economic level is also inevitably affected by the automotive industry was in the doldrums, but from the active donations, to switch to the production of masks, we can still see the car companies their respective responsibilities. In the unity of all walks of life, we are convinced that "no winter will not pass and no spring will not come" under the "epidemic".
This article comes from the author of the automobile home car, does not represent the views of the automobile home position.