Biodegradable polypropylene composite spunbond nonwoven ntaub

Vim lub saturated carbon carbon ib daim ntawv cog lus molecular qauv ntawm polypropylene, nws tus txheeb ze molecular qauv yog qhov ruaj khov thiab nyuaj rau degrade sai. Thaum no yooj yim polypropylene spunbond nonwoven npuag coj yooj yim rau tib neeg kev tsim khoom thiab lub neej, nws kuj ua rau qee qhov kev ua qias tuaj. Yog li ntawd, kev npaj thiab kev tshawb fawb ntawm ib puag ncig tus phooj ywg thiab biodegradable polypropylene composite spunbond nonwoven npuag yog qhov tseem ceeb tshwj xeeb. Polylactic acid yog biodegradable polymer nrog zoo heev biocompatibility thiab txhua yam khoom. Nws tuaj yeem ua ke nrog polypropylene raw cov ntaub ntawv los npaj biodegradable polypropylene composite spunbond nonwoven fabrics, yog li txo cov pa phem ib puag ncig los ntawm polypropylene spunbond nonwoven fabrics.

Kev ua tau zoo ntawm biodegradable polypropylene composite spunbond nonwoven ntaub

Nyob rau hauv tus txheej txheem ntawm kev npaj biodegradable polypropylene composite spunbond nonwoven npuag, yam xws li kev ceev ntawm lub metering twj tso kua mis, kub dov kub, thiab spinning kub yuav muaj ib tug tseem ceeb cuam tshuam rau lub cev khoom ntawm spunbond nonwoven ntaub. Kho raws li tus neeg yuav tsum tau muaj xws li qhov hnyav, thickness, tensile zog, thiab lwm yam.

Kev cuam tshuam ntawm metering twj tso kua mis ceev

Los ntawm kev teeb tsa sib txawv metering twj nrawm, cov khoom siv fiber ntau ntawm cov khoom sib xyaw ua ke fiber ntau, xws li linear ntom ntom, fiber ntau txoj kab uas hla, thiab fiber ntau lub zog tawg, raug tshuaj xyuas los txiav txim siab qhov zoo tshaj plaws metering twj tso kua mis ceev rau kev ua tau zoo ntawm cov khoom sib xyaw fiber ntau filaments. Nyob rau tib lub sijhawm, los ntawm kev teeb tsa sib txawv metering twj nrawm los txheeb xyuas cov ntsuas kev ua tau zoo xws li qhov hnyav, tuab, thiab lub zog tensile ntawm cov khoom sib xyaw spunbond nonwoven npuag, qhov zoo tshaj plaws metering twj tso kua mis ceev tuaj yeem tau txais los ntawm kev sib xyaw cov khoom fiber ntau thiab cov khoom tsis sib xws ntawm cov ntaub spunbond nonwoven ntaub.

Qhov cuam tshuam ntawm kub dov kub

Los ntawm kev kho lwm cov txheej txheem kev npaj thiab teeb tsa sib txawv dov mills thiab kub rau kub dov, qhov cuam tshuam ntawm kub dov kub ntawm cov khoom ntawm cov khoom sib xyaw fiber ntau tau kawm thiab tshuaj xyuas. Thaum qhov kub dov qhov ntsuas kub ntawm lub tshuab dov qis dhau lawm, cov kub dov fibers tsis tuaj yeem yaj tag nrho, ua rau cov qauv tsis meej thiab tsis zoo ntawm tes. Noj cov kev npaj ntawm biodegradable polylactic acid / additive / polypropylene composite spunbond non-woven npuag ua piv txwv, thaum kub dov qhov cuab lub zog qhov kub thiab txias mus txog 70 ℃, cov puas fiber kab yog ntshiab thiab muaj me ntsis sticking rau yob, yog li 70 ℃ tau mus txog rau sab sauv txwv ntawm qhov cuab lub zog.

Kev cuam tshuam ntawm spinning kub

Tus cawv ntawm spinning kub ntawm cov khoom ntawm composite fiber ntau xov, thiab fiber ntau pob txha, thiab kho lwm yam kev npaj ua tsis tiav.

Cov txheej txheem thev naus laus zis ntws ntawm biodegradable polypropylene composite spunbond nonwoven npuag

(1) Txiav polylactic acid, polypropylene, thiab maleic anhydride graft copolymer thiab sib tov rau hauv cov proportions tsim nyog;

(2) Siv lub extruder rau granulation thiab lub tshuab spinning rau spinning;

(3) Lim los ntawm cov lim dej thiab tsim ib lub mesh nyob rau hauv qhov kev txiav txim ntawm lub twj tso kua mis metering, lub tshuab ziab khaub ncaws, thiab high-speed flow field airflow stretching;

(4) Tsim cov khoom tsim nyog spunbond nonwoven fabrics los ntawm kub dov bonding reinforcement, winding, thiab thim rov qab txiav.