BAO B THY TINH

BAO B THY TINH

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NI DUNGCc dng bao b thy tinhSn xut bao b thy tinhKim tra bao b thy tinhc tnh bao b thy tinhNp v nt cho bao b thy tinhChn bao b thy tinh cho thc phm

Thy tinhL cht lng c nht cc cao; tnh chy lng thay i lin tc theo nhit - khng c im nng chy, im ng rn nht nh.Thnh phn: Ct + vi + Soda khan + nhmC th b sung mu di dng cc oxyt kim loi c mu.

Cc dng bao b thy tinhChai (bottle)L (jar)

Cc dng bao b thy tinhBnh ln (carboy) L nh (vial)

Carboy: dung tch t 5 lt5

Cc dng bao b thy tinhKhay, a

Cc dng bao b thy tinhCc (tumbler) Bnh (jug)

Cnh thng ng, y phng, khng quai, khng c chn ng C tay cm v vi

Cc b phn ca chai l thy tinhMing (finish): phn trn cng ca chai l, c ren hoc g gi np.Thn: l phn c to ra bi khun thn. y l phn ln nht ca chai l, nm gia ming v y.y: c to ra nh da y ca khun

Gn khng lin tc

Sn xut chai l thy tinh

Quy trnh sn xut chai l thy tinhCtRa ct, ch xtSy khPhn ly in tSng NuTo hnhPh nng b mt Sn phm

1. Combined materialsSilicaCullet - scrap or recycled glass - less energy to melt, economicalOther components 2. Heat in furnace at 1500C until mixture fuses togetherViscosity decreasesMixtures degasses and clarifies - fining 3. Molten glass is formed into containerBlow and Blow (B&B)Press and Blow (P&B)Narrow Neck Press and Blow (NNPB) 4. Containers are annealed to reduce internal stresses from nonuniform coolingAnnealing lehr is an oven which starts at 540C and slowly cools under controlled conditions 5. Surface treatments appliedInner surface may be treated with fluorocarbon gas to stabilize surface sodium ions - increases durability of surface.

Outer surface coatingstin or titanium vapor to form a metal oxide layer.improves cold-end coating with waxes, silicone or polyethyleneThese coatings add lubricity to outer surface. Health concerns with glass packaging

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Sn xut chai l thy tinhNhp liu: thy tinh nng chy c p qua mt da c l vi tc xc nh v ri vo mng dn.

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Sn xut chai l thy tinh

Qu trnh thi to hnh

Qu trnh thi to hnh

Sn xut bao b thy tinhQu trnh p v thi sn xut l thy tinh ming rng

Sn xut bao b thy tinhQu trnh p v thi sn xut l thy tinh c hp

Kim tra bao b thy tinhNgoi quanKch thcSc nhitSc cKh nng chu pMu sc

CC DNG KHUYT TT CA BAO B THY TINHKhuyt tt dng bt kh: do ch nu khng ng (nhit thp hoc thi gian ngn) kh khng thot ra htKhuyt tt dng thy tinh: do nhng thnh phn l to dng vn, dng si trong khi thy tinh.Khuyt tt dng tinh th: do trong nguyn liu c nhng thnh phn khng nng chy, khng phn ng nm li trong thy tinh.

c tnh bao b thy tinhTrong sut:C li cho NTD thy r thc phm bn trongKhng c li v mt ha hc: nh sng ph hy vitamin, cht bo, mt s cht mu cc TP nhy cm vi nh sng c cha trong bao b thy tinh mu.Tr ha hc: nhit thng, thy tinh tr vi cc thc phm m v lng, vi cc axit hu c thng c mt trong thc phm nhit cao, thy tinh b tn cng nh bi axit v cc dung dch kim thng dng ty raTi s dng v ti sinh d dng chi ph thpS ln ti s dng: 3-5 lnTi sinh: gip tit kim nng lng v ct

c tnh bao b thy tinh (tip theo)NngT trng: 2,2 -6,6Bao b c th nng hn thc phm c chaD v khi vn chuynChu sc c kmChu nn ttChu sc nhit km, do:Gin n nhit lnDn nhit kmCu trc c cha cc bt kh Xu hng: gim trng lng & tng bn

Borosilicate GlassBoron oxide, B2O3, produces a glass with very low thermal expansion coefficient and high resistance to chemical attack. But B2O3, does not lower viscosity as much as soda, thus furnace temps must be higher (higher cost).20

NP NT CA BAO B THY TINH

Np v NtNp (closure): y che ph ming chai lNt (stopper): Nm lt vo bn trong ming chai

Vt liu lm npThng lm bng st, nhm, nha.Np st phi c ph bng lp verni hoc lp m (bn trong).Np st dng cho chai l cha sn phm c p sut cao: nc ung c gas, sn phm tit trng.Np nhm dng cho nc ung khng gas, sa, yauaNp nha dng cho cc l khng c p sut bn trong (dng past, dng bt)

Cc loi npNp ren (screw cap)Np ai (band cap)Np min (crown cap)

(1) Those designed for internal pressureCrown cap - steelTwist-off crown cap - steelRoll-on or spun-on aluminum closure

Internal components consist of cap/compressible layer/food contact-seal layer (2) Those designed for vacuum sealLug-typeTwist capPress-on twist-off capPry off (3) Those designed to contain materials in packageScrew top with minimum thread engagement.

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Cc b phn ca npMt np: Bn ngoi npMt tri: Bn trong npPanel: vng phng chnh gia mt npRa: mt bn ca np. Ra c th trn hoc c kha hoc c rnh mng m vo ming chai, l.Vai np: vng bo trn ni panel vi ra np

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Vt liu lm ntNt cao suNt thy tinhNt bc (thng dng cho ru)

Cc lu khi la chn bao b thy tinh cho thc phmKch thc thn v kiu ming chai l: m bo th tch v chit rt d dngC th chn c np ph hpMu sc thy tinhnh hng n loi nh sng c th i vo thc phmKh nng chu sc nhitQuan trng i vi cc cng on gia nhit, lm nguiThng dng BB thy tinh cho: thc n tr em, bia ru, nc gii kht

Ti s dng bao b thy tinhBao b s dngB np, tp cht bn trongNgm bc nhnRaSy

Quy trnh ra chai t ng