Flexible raj, ib qho yooj yim thiab pheej yig cov khoom ntim, yog siv dav thiab nrov hauv kev lag luam tshuaj niaj hnub. Lub siab - cov raj hloov tau zoo tuaj yeem tiv thaiv cov ntsiab lus thiab txhim kho cov khoom zoo, yog li pab cov tuam txhab tshuaj niaj hnub yeej cov neeg siv khoom ntau dua. Yog li, yuav ua li cas cov tuam txhab tshuaj niaj hnub tuaj yeem xaiv siab -cov yas hloov tau zoo uas tsim nyog rau lawv cov khoom?
Kev xaiv thiab cov ntaub ntawv zoo yog qhov tseem ceeb los xyuas kom meej qhov zoo ntawm cov hoses, ncaj qha cuam tshuam rau lawv cov kev ua thiab kev siv zaum kawg. Cov khoom siv hauv cov yas hoses muaj xws li polyethylene (rau lub cev thiab lub kaus mom kawg), polypropylene (rau lub kaus mom), masterbatch, barrier resins, luam ntawv inks, thiab varnishes. Yog li ntawd, kev xaiv cov khoom siv ncaj qha cuam tshuam rau lub hose qhov zoo. Txawm li cas los xij, kev xaiv cov khoom siv kuj yog nyob ntawm kev nyiam huv, kev tiv thaiv kev tiv thaiv (xws li oxygen thiab dej vapor barrier, fragrance tuav, thiab lwm yam), thiab tshuaj tiv thaiv.
Kev xaiv hose: Ua ntej, cov ntaub ntawv siv yuav tsum ua raws li cov qauv kev nyiam huv, nrog rau cov hlau hnyav, cov tshuaj fluorescent, thiab lwm yam khoom tsis zoo uas tswj tau raws li qhov txwv. Piv txwv li, hoses xa tawm mus rau Tebchaws Meskas yuav tsum siv polyethylene (PE) thiab polypropylene (PP) uas ua tau raws li US Food and Drug Administration (FDA) tus qauv 21 CFR 117.1520.
Barrier Properties: Yog tias cov ntsiab lus ntawm lub ntim rau lub tuam txhab tshuaj txhua hnub yog cov khoom lag luam tshwj xeeb rau cov pa oxygen (xws li qee cov tshuaj pleev xim dawb) lossis cov tshuaj tsw qab uas muaj ntxhiab tsw heev (xws li cov roj tseem ceeb lossis qee cov roj, acids, ntsev, thiab lwm yam tshuaj corrosive), ces tsib - txheej co{1} yuav tsum tau xaiv. Vim tias cov pa oxygen permeability ntawm tsib- txheej co-extruded raj (polyethylene/bonding resin/EVOH/bonding resin/polyethylene) yog 0.2-1.2 units, hos ntawm ib leeg ib leeg- txheej polyethylene raj yog 150{0{10} units. Nyob rau hauv ib lub sij hawm, qhov poob phaus ntawm ethanol muaj nyob rau hauv cov co-extruded raj yog kaum ntawm lub sij hawm qis dua li ntawm ib leeg-txheej raj. Tsis tas li ntawd, EVOH yog ib qho ethylene-vinyl cawv copolymer nrog zoo heev barrier zog thiab aroma retention (zoo tagnrho ntawm ib tug tuab ntawm 15-20 micrometers).
Khoom tawv tawv: Cov kev xav tau rau hose txhav sib txawv ntawm cov tuam txhab tshuaj txhua hnub. Yog li yuav ua li cas kom tau qhov xav tau nruj? Feem ntau siv polyethylene rau hoses yog tsawg- ntom polyethylene, siab- ntom polyethylene, thiab linear qis- ntom polyethylene. High-polyethylene ntom ntom muaj zog zoo dua li qis- ntom polyethylene; Yog li ntawd, kho qhov sib piv ntawm high- ntom polyethylene rau qis- ntom polyethylene tuaj yeem ua tiav qhov xav tau nruj.
Cov khoom siv tshuaj tiv thaiv: High- ntom polyethylene muaj tshuaj tiv thaiv zoo dua li qis- ntom polyethylene.
Cov Khoom Siv Huab Cua Resistance: Txhawm rau tswj lub sijhawm luv luv -lub sijhawm lossis ntev- lub sijhawm ua haujlwm ntawm lub hose, yam xws li cov tsos, lub siab / poob tsis kam, sealing lub zog, ib puag ncig kev ntxhov siab tawg tsis kam (ESCR tus nqi), thiab kev poob ntawm cov tshuaj tsw qab thiab cov khoom xyaw nquag yuav tsum tau txiav txim siab.
Masterbatch Xaiv: Masterbatch plays lub luag haujlwm tseem ceeb hauv kev tswj cov kav dej. Yog li ntawd, thaum xaiv masterbatch, cov neeg siv khoom lag luam yuav tsum xav txog nws qhov zoo dispersibility, pom thiab thermal stability, huab cua tsis kam, thiab cov khoom tsis kam. Cov khoom tsis kam yog qhov tseem ceeb tshwj xeeb thaum siv hose; yog tias tus masterbatch tsis sib haum nrog cov khoom ntim, nws cov xim yuav txav mus rau hauv cov khoom, nrog rau qhov tshwm sim loj. Yog li ntawd, cov tuam txhab tshuaj txhua hnub yuav tsum kuaj xyuas qhov ruaj khov ntawm cov khoom tshiab nrog lub hose (kev ntsuas nrawm raws li cov xwm txheej).
Hom Varnishes thiab lawv cov yam ntxwv: Cov kua roj vanish siv rau hauv cov hoses tau muab faib ua UV-kho thiab cua sov- hom qhuav, thiab tuaj yeem muab faib ua glossy thiab matte tiav. Cov kua roj vanish tsis tsuas yog muab cov txiaj ntsig zoo nkauj pom kev zoo nkauj tab sis kuj tseem tiv thaiv cov ntsiab lus thiab muab qee cov khoom thaiv kev tiv thaiv oxygen, dej vapor, thiab tshuaj tsw qab. Feem ntau, tshav kub- cov kua roj vanish kho tau zoo adhesion rau tom qab kub stamping thiab tshuaj ntsuam luam ntawv, thaum UV varnishes muab zoo dua gloss. Cov tuam txhab tshuaj tuaj yeem xaiv cov kua roj vanish uas tsim nyog raws li cov yam ntxwv ntawm lawv cov khoom. Tsis tas li ntawd, kho cov kua roj vanish yuav tsum muaj qhov zoo adhesion, du, pitted nto, thiab yuav tiv taus bending, abrasion, thiab corrosion, thiab yuav tsum tsis txhob discolor thaum lub sij hawm cia.
Kev xav tau rau lub cev lub cev / lub hau:
1. Qhov saum npoo ntawm lub raj lub cev yuav tsum du, tsis muaj streaks, khawb, kua muag, thiab shrinkage deformation. Lub raj lub cev yuav tsum ncaj thiab tsis khoov, nrog cov phab ntsa tuab. Qhov kam rau ua rau phab ntsa thickness, ntev, thiab txoj kab uas hla yuav tsum tag nrho nyob rau hauv qhov kev teev tseg.
2. Lub hau lub raj thiab lub taub hau raj yuav tsum tau txuas nrog kev ruaj ntseg. Cov kab sib txuas yuav tsum zoo huv si, zoo nkauj txaus nyiam, thiab ntawm qhov dav dav. Lub taub hau raj yuav tsum tsis txhob skewed tom qab kev sib txuas.
3. Lub taub hau lub taub hau thiab lub hau yuav tsum haum zoo, ntsia hlau rau hauv thiab tawm kom zoo yam tsis muaj slippage nyob rau hauv lub torque ntau yam. Yuav tsum tsis txhob muaj dej los yog cua nkag ntawm lub raj thiab lub hau.
Printing Requirements: Offset printing feem ntau yog siv rau kev ua hose. Feem ntau cov inks yog UV- kho, yuav tsum muaj zog adhesion thiab colorfastness. Cov xim luam tawm yuav tsum nyob rau hauv qhov tob uas tau teev tseg, kev sau npe yuav tsum yog qhov sib txawv ntawm 0.2 hli, thiab cov ntawv yuav tsum ua kom tiav thiab meej.
Kev xav tau rau lub kaus mom yas: Cov kaus mom yas feem ntau yog txhaj tshuaj molded los ntawm polypropylene (PP). High- cov kaus mom yas zoo yuav tsum tsis muaj qhov pom tseeb shrinkage los yog burrs, cov kab sib cais, qhov ntev, thiab qhov sib haum nrog lub raj kawg. Lawv yuav tsum tsis txhob tsim brittleness, tawg, los yog lwm yam kev puas tsuaj thaum lub sij hawm ib txwm siv. Piv txwv li, nyob rau hauv qhov tsim nyog qhib quab yuam, lub hau yuav tsum tiv taus ntau tshaj 300 folds yam tsis muaj kev tawg.
