It ’s time for school, how do students wear masks scientifically

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Time of issue:2020-05-13
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(Summary description)Withmoreandmoreschoolsopening,children'smaskshavebecome"importantsupplies"thatparentsarepreparing.Afterreturningtoschool,howdoyouchooseamaskthatcombinessafetyandcomfortforyourchild?DoIneedtowearamaskallday?Howmanyaresuitableforaday?Whataboutoutdoorsports?Seetheexpertstoanswerthequestionsthatparentscareabout. Parents'questions:Therearemanyvarietiesonthemarket,howtochoosechildren'smasks?Expertanswers:Don'tbuybeautifulmasks,breathingresistanceisthecoreindicator."Children'smasksarenotareducedversionofadultmasks,andtheycannotbesimplymodifiedwithadultmasks.Thecoredifferencebetweenthetwoisbreathingresistance."JinXiangyu,aprofessorattheTextileCollegeofDonghuaUniversity,saidwearingamaskislikesettingafilter"Barrier",itisnecessarytoblockparticulatematter,droplets,etc.,andtoensuresmoothbreathing:"Becauseofdifferentphysiologicalcharacteristics,thelungcapacityofchildrenisonly1/6ofadults,thetidalvolumeisalsosmallerthanadults,buttherespiratoryimpedanceislarge,Thedesignofchildren'smasksmustfullyconsideritshighefficiencyandlowresistanceandthetightnessofthemask."Afewdaysago,theNationalStandardsCommitteeissuedanoticethatChina’sfirstnationalstandardforchildren’smasks,“TechnicalSpecificationsforChildren’sMasks”(draftforsolicitingopinions),isopentosolicitopinionsfromthesociety."Generallyspeaking,theventilationresistanceoftheadultmaskmustbelessthanorequalto49Pa,theventilationresistanceofthechildmaskmustbelessthanorequalto30Pa,andtheventilationresistanceoftheN95isabout300Pa.ThemanufacturerwillmarkintheinspectionreportortheinstructionmanualwhatstandarditisaccordingFortheproductionofchildren'smasks,parentsshouldpayattentiontothiscoreindexwhenpurchasing."JinXiangyusaid.Healsoremindedthatduetothedifferentgrowthanddevelopmentofchildren,itisnotnecessarilyappropriatetochoosethesizeofthemaskcompletelyaccordingtoage.Itisrecommendedtotryitfirstandthenbuyitinbatches.Twotypesofmaskscannotbeblindlychosen:"OneistheN95mask,whichhasgoodprotectionperformance,butventilationresistanceLarge,notsuitablefordailyusebychildren.Thesecondisbrightlycolored'pretty'masks,althoughtheyaregenerallyontheouterlayeranddonotdirectlycontactthechild'sskin,butifthedyesdonotmeetthefood-gradestandards,theywillstillaffectthechild'shealth." Parents'questions:Howdochildrenwearmasksintheclassroomandontheplayground?Expertanswers:Preparethreeaday.DonotwearN95inphysicaleducationclasses.Manyparentsareveryconcernedaboutwhatkindofmasksshouldtheywearforchildrenwhowillreturntocampussoon?IsittheN95withbetterprotectionperformance,oramorebreathableflatmask?"Masksareusuallydividedintoplaneandthree-dimensional.Theplaneisourcommonone-piecemask.Thethree-dimensionalmaskistheN95mask,whichismoreairtight.Children’smasksindifferentscenariosanddifferentrisklevelshavedifferentneeds.TheschoolenvironmentisnotItbelongstoahigh-riskarea.Atthistime,childrenmainlyplayahygienicroleinwearingmasks.Itisrecommendedtouseaflatmask."WangQi,deputydirectoroftheHealthProtectionFlexibleTechnologyEngineeringCenterofBeijingInstituteofClothingTechnology."TherewasanetpostthatsaidthatitisveryundesirableforachildtowearN95forphysicaleducation.Itistoouncomfortabletobreathe,whichwilladverselyaffectthechild'slungs.Inarelativelyquietindoorclassroomenvironment,wearingadisposablemaskOkay.Outdoorsportscanbetakenoff."Inaddition,intermsofthenumberofmasks,JinXiangyusuggestedthatparentspreparethreemasksfortheirchildreneveryday:"Wearoneinclassinthemorning,discarditwheneatingatnoon,andwearoneinclassintheafternoon.TheotheroneKeepitasasparetopreventthemaskfrombeingbrokenordirty." Parents'questions:Themaskismorebreathable,willthesafetybereduced?Expertanswers:Thestandardofprotectionisnotlowered,andmoreattentionwillbepaidtocomfortandaestheticsinthefuture."Smallventilationresistancewillnotaffecttheprotection.Whetheritisdesignorproduction,children'smasksmustpayattentiontotheprincipleof'highefficiencyandlowresistance.'Maskshaveseparaterequirementsforsafety,comfort,materialsused,andmaskdesign.Theprotectionstandardisconsistentwiththeadultpopulationcover,andtheprotectionstandardhasnotbeenreduced."Children'smasktechnicalspecifications"(draftforsolicitingopinions)putsforwardthreebasicrequirementsforchildren'smasks:"materialsafety,wearingsafetyandusesafety",andfurtherfromcolorfastness,formaldehydeindex,PHvalue,Flameretardantperformance,visionandother15aspectshavebeencarefullyregulated.Forexample,inordertoensurethefitofthenose,thelengthofthenasalclipforchildren'smasksshouldnotbelessthan5.5cm;inordertofacilitatethechildrentoobservetheroadsurfaceatanytimeduringwalking,thearchheightofthemaskshouldbespecified."Sofar,theuseofchildren'smaskshasbeenmainlyprotective.Inthefuture,astheepidemicsituationisfurtheralleviated,wewillpaymoreattentiontocomfortandaestheticsonthebasisofsatisfyingtheprotection.Intermsofaesthetics,wewillbaseonRelevantstandards,accordingtothephysicalandmentalcharacteristicsofchildrenofdifferentagestomakefurtherstyles,colordesign,etc.,tomakeitmorepersonalized."WangQisaid.

It ’s time for school, how do students wear masks scientifically

(Summary description)Withmoreandmoreschoolsopening,children'smaskshavebecome"importantsupplies"thatparentsarepreparing.Afterreturningtoschool,howdoyouchooseamaskthatcombinessafetyandcomfortforyourchild?DoIneedtowearamaskallday?Howmanyaresuitableforaday?Whataboutoutdoorsports?Seetheexpertstoanswerthequestionsthatparentscareabout. Parents'questions:Therearemanyvarietiesonthemarket,howtochoosechildren'smasks?Expertanswers:Don'tbuybeautifulmasks,breathingresistanceisthecoreindicator."Children'smasksarenotareducedversionofadultmasks,andtheycannotbesimplymodifiedwithadultmasks.Thecoredifferencebetweenthetwoisbreathingresistance."JinXiangyu,aprofessorattheTextileCollegeofDonghuaUniversity,saidwearingamaskislikesettingafilter"Barrier",itisnecessarytoblockparticulatematter,droplets,etc.,andtoensuresmoothbreathing:"Becauseofdifferentphysiologicalcharacteristics,thelungcapacityofchildrenisonly1/6ofadults,thetidalvolumeisalsosmallerthanadults,buttherespiratoryimpedanceislarge,Thedesignofchildren'smasksmustfullyconsideritshighefficiencyandlowresistanceandthetightnessofthemask."Afewdaysago,theNationalStandardsCommitteeissuedanoticethatChina’sfirstnationalstandardforchildren’smasks,“TechnicalSpecificationsforChildren’sMasks”(draftforsolicitingopinions),isopentosolicitopinionsfromthesociety."Generallyspeaking,theventilationresistanceoftheadultmaskmustbelessthanorequalto49Pa,theventilationresistanceofthechildmaskmustbelessthanorequalto30Pa,andtheventilationresistanceoftheN95isabout300Pa.ThemanufacturerwillmarkintheinspectionreportortheinstructionmanualwhatstandarditisaccordingFortheproductionofchildren'smasks,parentsshouldpayattentiontothiscoreindexwhenpurchasing."JinXiangyusaid.Healsoremindedthatduetothedifferentgrowthanddevelopmentofchildren,itisnotnecessarilyappropriatetochoosethesizeofthemaskcompletelyaccordingtoage.Itisrecommendedtotryitfirstandthenbuyitinbatches.Twotypesofmaskscannotbeblindlychosen:"OneistheN95mask,whichhasgoodprotectionperformance,butventilationresistanceLarge,notsuitablefordailyusebychildren.Thesecondisbrightlycolored'pretty'masks,althoughtheyaregenerallyontheouterlayeranddonotdirectlycontactthechild'sskin,butifthedyesdonotmeetthefood-gradestandards,theywillstillaffectthechild'shealth." Parents'questions:Howdochildrenwearmasksintheclassroomandontheplayground?Expertanswers:Preparethreeaday.DonotwearN95inphysicaleducationclasses.Manyparentsareveryconcernedaboutwhatkindofmasksshouldtheywearforchildrenwhowillreturntocampussoon?IsittheN95withbetterprotectionperformance,oramorebreathableflatmask?"Masksareusuallydividedintoplaneandthree-dimensional.Theplaneisourcommonone-piecemask.Thethree-dimensionalmaskistheN95mask,whichismoreairtight.Children’smasksindifferentscenariosanddifferentrisklevelshavedifferentneeds.TheschoolenvironmentisnotItbelongstoahigh-riskarea.Atthistime,childrenmainlyplayahygienicroleinwearingmasks.Itisrecommendedtouseaflatmask."WangQi,deputydirectoroftheHealthProtectionFlexibleTechnologyEngineeringCenterofBeijingInstituteofClothingTechnology."TherewasanetpostthatsaidthatitisveryundesirableforachildtowearN95forphysicaleducation.Itistoouncomfortabletobreathe,whichwilladverselyaffectthechild'slungs.Inarelativelyquietindoorclassroomenvironment,wearingadisposablemaskOkay.Outdoorsportscanbetakenoff."Inaddition,intermsofthenumberofmasks,JinXiangyusuggestedthatparentspreparethreemasksfortheirchildreneveryday:"Wearoneinclassinthemorning,discarditwheneatingatnoon,andwearoneinclassintheafternoon.TheotheroneKeepitasasparetopreventthemaskfrombeingbrokenordirty." Parents'questions:Themaskismorebreathable,willthesafetybereduced?Expertanswers:Thestandardofprotectionisnotlowered,andmoreattentionwillbepaidtocomfortandaestheticsinthefuture."Smallventilationresistancewillnotaffecttheprotection.Whetheritisdesignorproduction,children'smasksmustpayattentiontotheprincipleof'highefficiencyandlowresistance.'Maskshaveseparaterequirementsforsafety,comfort,materialsused,andmaskdesign.Theprotectionstandardisconsistentwiththeadultpopulationcover,andtheprotectionstandardhasnotbeenreduced."Children'smasktechnicalspecifications"(draftforsolicitingopinions)putsforwardthreebasicrequirementsforchildren'smasks:"materialsafety,wearingsafetyandusesafety",andfurtherfromcolorfastness,formaldehydeindex,PHvalue,Flameretardantperformance,visionandother15aspectshavebeencarefullyregulated.Forexample,inordertoensurethefitofthenose,thelengthofthenasalclipforchildren'smasksshouldnotbelessthan5.5cm;inordertofacilitatethechildrentoobservetheroadsurfaceatanytimeduringwalking,thearchheightofthemaskshouldbespecified."Sofar,theuseofchildren'smaskshasbeenmainlyprotective.Inthefuture,astheepidemicsituationisfurtheralleviated,wewillpaymoreattentiontocomfortandaestheticsonthebasisofsatisfyingtheprotection.Intermsofaesthetics,wewillbaseonRelevantstandards,accordingtothephysicalandmentalcharacteristicsofchildrenofdifferentagestomakefurtherstyles,colordesign,etc.,tomakeitmorepersonalized."WangQisaid.

Categories:Industry News
Author:
Origin:
Time of issue:2020-05-13
Views:0

With more and more schools opening, children's masks have become "important supplies" that parents are preparing.

After returning to school, how do you choose a mask that combines safety and comfort for your child? Do I need to wear a mask all day? How many are suitable for a day? What about outdoor sports? See the experts to answer the questions that parents care about.

Parents' questions:

There are many varieties on the market, how to choose children's masks?

Expert answers:

Don't buy beautiful masks, breathing resistance is the core indicator.

"Children's masks are not a reduced version of adult masks, and they cannot be simply modified with adult masks. The core difference between the two is breathing resistance." Jin Xiangyu, a professor at the Textile College of Donghua University, said wearing a mask is like setting a filter "Barrier", it is necessary to block particulate matter, droplets, etc., and to ensure smooth breathing: "Because of different physiological characteristics, the lung capacity of children is only 1/6 of adults, the tidal volume is also smaller than adults, but the respiratory impedance is large, The design of children's masks must fully consider its high efficiency and low resistance and the tightness of the mask. "

A few days ago, the National Standards Committee issued a notice that China ’s first national standard for children ’s masks, “Technical Specifications for Children ’s Masks” (draft for soliciting opinions), is open to solicit opinions from the society.

"Generally speaking, the ventilation resistance of the adult mask must be less than or equal to 49 Pa, the ventilation resistance of the child mask must be less than or equal to 30 Pa, and the ventilation resistance of the N95 is about 300 Pa. The manufacturer will mark in the inspection report or the instruction manual what standard it is according For the production of children's masks, parents should pay attention to this core index when purchasing. "Jin Xiangyu said.

He also reminded that due to the different growth and development of children, it is not necessarily appropriate to choose the size of the mask completely according to age. It is recommended to try it first and then buy it in batches. Two types of masks cannot be blindly chosen: "One is the N95 mask, which has good protection performance, but ventilation resistance Large, not suitable for daily use by children. The second is brightly colored 'pretty' masks, although they are generally on the outer layer and do not directly contact the child's skin, but if the dyes do not meet the food-grade standards, they will still affect the child's health. "

Parents' questions:

How do children wear masks in the classroom and on the playground?

Expert answers:

Prepare three a day. Do not wear N95 in physical education classes.

Many parents are very concerned about what kind of masks should they wear for children who will return to campus soon? Is it the N95 with better protection performance, or a more breathable flat mask?

"Masks are usually divided into plane and three-dimensional. The plane is our common one-piece mask. The three-dimensional mask is the N95 mask, which is more airtight. Children ’s masks in different scenarios and different risk levels have different needs. The school environment is not It belongs to a high-risk area. At this time, children mainly play a hygienic role in wearing masks. It is recommended to use a flat mask. "Wang Qi, deputy director of the Health Protection Flexible Technology Engineering Center of Beijing Institute of Clothing Technology.

"There was a net post that said that it is very undesirable for a child to wear N95 for physical education. It is too uncomfortable to breathe, which will adversely affect the child's lungs. In a relatively quiet indoor classroom environment, wearing a disposable mask Okay. Outdoor sports can be taken off. "In addition, in terms of the number of masks, Jin Xiangyu suggested that parents prepare three masks for their children every day:" Wear one in class in the morning, discard it when eating at noon, and wear one in class in the afternoon. The other one Keep it as a spare to prevent the mask from being broken or dirty. "

Parents' questions:

The mask is more breathable, will the safety be reduced?

Expert answers:

The standard of protection is not lowered, and more attention will be paid to comfort and aesthetics in the future.

"Small ventilation resistance will not affect the protection. Whether it is design or production, children's masks must pay attention to the principle of 'high efficiency and low resistance.' Masks have separate requirements for safety, comfort, materials used, and mask design. The protection standard is consistent with the adult population cover, and the protection standard has not been reduced.

"Children's mask technical specifications" (draft for soliciting opinions) puts forward three basic requirements for children's masks: "material safety, wearing safety and use safety", and further from color fastness, formaldehyde index, PH value , Flame retardant performance, vision and other 15 aspects have been carefully regulated. For example, in order to ensure the fit of the nose, the length of the nasal clip for children's masks should not be less than 5.5cm; in order to facilitate the children to observe the road surface at any time during walking, the arch height of the mask should be specified.

"So far, the use of children's masks has been mainly protective. In the future, as the epidemic situation is further alleviated, we will pay more attention to comfort and aesthetics on the basis of satisfying the protection. In terms of aesthetics, we will base on Relevant standards, according to the physical and mental characteristics of children of different ages to make further styles, color design, etc., to make it more personalized. "Wang Qi said.

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Previous: The weather is getting hotter, how to wear a mask? Hear what the chief expert in epidemiology of the CDC said

Next: The State Food and Drug Administration convened a special video and telephone conference to comprehensively strengthen the export quality supervision of medical devices for epidemic prevention and control