Vim li cas lub hnab rustling? Nthuav qhov tseeb txog cov hnab yas

2024 Tus sau: Priscilla Miln | [email protected]. Kawg hloov kho: 2024-02-18 01:45

Ntsuab, liab, xiav, daj… ntom thiab nyias, muaj zog thiab tawg yooj yim, loj thiab me me… Tag nrho cov epithets no cim tib yam khoom - ib lub hnab yas. Ua los ntawm cov khoom siv tshwj xeeb, lub hnab ua lub suab nrov ntawm qhov kov me ntsis. Muaj coob tus xav - yog vim li cas lub pob rustling? Cia peb sim daws qhov teeb meem no.

Keeb kwm ntawm hnab yas

Thawj lub hnab yas tau tshwm sim ua tsaug rau kev sim ntawm cov kws tshawb fawb German Hans von Pechmann hauv xyoo 1899. Nws yog Pehman uas tau tsim ib qho kev sib xyaw peculiar hu ua polymethylene. Kev txhim kho cov khoom siv txuas ntxiv los ntawm E. Fawsetm thiab R. Gibson hauv xyoo 1934.

thawj lub hnab yog tsim los ntawm celluloid. Lawv tau npaj los khaws cov yeeb yaj kiab. Txawm li cas los xij, cov hnab no muaj ib qho tsis kaj siab - kev tawg. Tsuas yog xyoo 1911, cov kws tshawb fawb tau tswj xyuas cov khoom siv pob tshab thiab elastic. Lawv hu ua qhov tshiab cellophane. Tab sis innovation tsis yogtau nyob rau hauv kev thov siab vim tus nqi inflated.

Polyethylene, uas tau tshwm sim hauv xyoo 1933, hloov pauv cellophane kim heev. Twb tau nyob rau nruab nrab-50s hauv tebchaws Askiv, cov hnab ntim khoom tau siv hauv cov khw muag khoom loj. Tsis ntev, cov hnab yas pib tsim ntau ntau (kwv yees li 11 lab txhua xyoo).

Hauv Teb Chaws Asmeskas, txij li xyoo 1957, cellophane ntim khoom noj tau siv ntau heev. Thiab nyob rau hauv lub USSR, thawj pob khoom yog ib qho ntawm cov khoom ntawm cov nyiaj tau los rau cov neeg ua lag luam dub. Lub hnab nrog cov ntawv sau tuaj txawv teb chaws txhais tau hais tias tus tswv. Lawv tau khaws cia thiab siv tsuas yog hauv cov xwm txheej tshwj xeeb. Qhov xwm txheej tau hloov nrog qhov pib ntawm kev tsim cov hnab yas hauv lub tebchaws Soviet.

Qhov txawv ntawm cellophane thiab polyethylene

Raws li twb tau hais lawm, cellophane tau tsim nyob rau thaum pib ntawm lub xyoo pua 20th. Thiab ces, thiab niaj hnub no cov khoom yog tsim los ntawm viscose. Raws li qhov no, lub hnab cellophane yog kim dua li cov yas. Tam sim no, ntim cellophane tuaj yeem pom ntawm cov ntim luam yeeb, cov khoom qab zib qhwv lossis paj ntaub.

Tsis zoo li polyethylene, cellophane muaj glycerin, uas muab cov khoom qab zib saj. Cov xim ntawm lub pob no siv sijhawm ntev heev. Tsis tas li ntawd, cellophane yog nruj dua polyethylene. Qhov no yuav piav qhia yog vim li cas lub hnab cellophane rustles.

hnab yas ua los ntawm dab tsi?

Xyoo 1950, pob nyiaj polyethylene hloov pauv cellophane kiag li. Cov hnab yas mos, pliable tam sim ntawd poob rau hauv kev hlub nrog cov neeg siv khoom. Ntxiv rau cov khoom zoo nkauj, hnab yasmuaj kev ntseeg siab thiab dav heev.

Polyethylene lub hnab ntim khoom yog tsim los ntawm cov yas nyias nyias, uas tau muab rho tawm los ntawm cov pa roj carbon monoxide - ethylene. Muaj ob hom hnab yas - LDPE thiab HDPE. Thawj hom yog tsim los ntawm kev kub siab, thiab qhov thib ob qis.

Yam hnab yas

Cov lus teb rau lo lus nug yog vim li cas lub hnab yas rustles yuav nyob ntawm seb lub hnab ntim khoom. Muaj ntau ntau hom hnab ntim polyethylene:

T-shirt hnab. Cov hnab no yog tsim los ntawm cov khoom siv PVD lossis HDPE thev naus laus zis. Hauv kev tsim cov pob khoom zoo li no, cov nqi lag luam loj tsis tas yuav tsum muaj. Qhov no tsis tiv thaiv T-shirts los ntawm roomy thiab ruaj. Lub hnab ntim khoom muaj peev xwm ntawm 5 txog 35 kg. Muaj tseeb, qhov loj dua qhov load, qhov ntau ntawm cov khoom yog deformed

Packs with a cut handle-banana. Cov pob khoom zoo li no muaj cov duab plaub. Tus kov hauv cov hnab no yog lub qhov txiav tawm ntawm lub sab sauv ntawm cov khoom. Cov hnab yog ua los ntawm PVD lossis HDPE cov ntaub ntawv. Lub softness thiab elasticity ntawm lub hnab teb cov lus nug ntawm yog vim li cas lub hnab rustle. Cov hnab no yog cov tshuaj zoo rau qhwv khoom plig, tshaj tawm, phau ntawv, thiab lwm yam

• Polyethylene hnab nrog lub voj kov. Ib qho tshwj xeeb ntawm cov hnab no yog qhov muaj tus kov uas tuaj yeem txuas rau lub hnab hauv peb txoj kev:

  • densecov polyethylene strip yog txuas rau lub hnab los ntawm tsis ncaj ncees lawm sab;
  • yas kov yog txuas nrog txoj kev ceev tshwj xeeb txhawm rau ua kom lub peev xwm thauj khoom;
  • hlua tes yog txuas los ntawm threading qhov kawg ntawm txoj hlua los ntawm qhov nyob rau sab saum toj ntawm lub hnab thiab khi pob caus kom muaj zog.

• Lub hnab nrog lub voj voog, zoo li cov hnab ntim yav dhau los, yog tsim los siv HDPE thiab PVD thev naus laus zis. Lawv yog cov tuab heev thiab yog li ntawd ruaj. Feem ntau cov hnab no muaj logos thiab luam tawm. Cov hnab no tuaj yeem rov siv tau, lawv tuaj yeem siv tau rau txhua qhov xwm txheej - hauv cov txheej txheem ntawm kev yuav khoom, nqa lub tsev kawm ntawv hloov chaw, phau ntawv lossis khoom noj. Qhov ntom ntawm cov khoom piav qhia yog vim li cas lub hnab nrog cov hlua txuas nrog rustles.
• Ntim thawv. Cov hnab no tsis ruaj khov heev. Lub luag haujlwm tseem ceeb ntawm lub hnab yog los tiv thaiv cov khoom ntim ntawm cov av thiab noo noo. Qhov no yog tib lub ntim uas yog tsim los ntawm cov ntaub ntawv HDPE. Cov hnab no nyias nyias thiab pheej yig. Lawv yog cov pov tseg. Lub peev xwm ntawm cov pob khoom me me - tsuas yog 2-7 kg. Tab sis lawv tau tsim, hauv paus, tsis yog rau nqa, tab sis rau ntim. Lub thinness ntawm cov khoom piav qhia vim li cas lub pob rustles.

Vim li cas lawv rustling?

Muab piv rau lub hnab yas thiab ntim cellophane, koj tuaj yeem pom tias cellophane suab nrov dua thiab nrov dua thaum compressed. Tab sis polyethylene kuj ua rau lub suab uas yog me ntsis ntsiag to thiab softer. Yuav piav qhia yog vim li cas nws rustlespob? Qhov khoom yog tias polyethylene yog tib yam yas, tsuas yog ntau zaus thinner. Txhua tus paub tias cov yas yog cov khoom siv ntom ntom thiab tawv. Thaum cov khoom yas tawg, cov yam ntxwv tawg yog tawm. Tib yam tshwm sim nrog lub hnab yas. Thaum compressed thiab wringing, lub suab yog rustling. Nyob rau hauv rooj plaub no, lub pob tsis tawg zoo li yas, tab sis tseem nyob twj ywm.

Txawm li cas los xij, tsis yog txhua lub hnab rustle nrog tib lub suab. Nws nyob ntawm cov khoom siv los ntawm cov khoom tsim. Lub suab nrov tshaj plaws tuaj yeem khav ntawm lub hnab ua los ntawm cov khoom siv HDPE thev naus laus zis.

hnab yas: nthuav qhov tseeb

Vim li cas lub pob rustling? Nws nyob ntawm qhov ntom ntawm cov khoom thiab cov txheej txheem ntawm kev tsim cov khoom. Thoob plaws hauv keeb kwm ntawm cov tsos ntawm cov hnab yas, ntau lub sijhawm nthuav tawm tau sau. Piv txwv li:

• Russia yog ib tus thawj coj hauv kev tsim cov hnab yas zoo.
• Ntxiv rau kev tsim cov ntim khoom, polyethylene tau ua tiav hauv kev tsim cov khaub ncaws muaj npe.
• Nyob hauv ntau lub tebchaws nyob sab Europe, tus nqi ntawm lub hnab suav nrog tus nqi tshwj xeeb uas mus rau kev pov tseg ntawm polyethylene.
• Hnub no muaj cov cuab yeej tshwj xeeb uas tso cai tsim cov hnab los ntawm nws tus kheej-splitting polyethylene. Txawm li cas los xij, cov hnab no kim heev vim cov khoom siv siab.

Pros and cons of plastic bag

Ntawm qhov zoo ntawm cov hnab yas yog cov hauv qab no:

• Lub ntim polyethylene yog dej tsis qab thiab yog li tiv thaiv zoo los ntawm ya raws thiab hmoov av.
• Cov hnab yuav luag hnyav thiab hnyav heev.
• hnab yas yog ruaj khov. Muaj ntau yam siv tau.
• polyethylene hnab kuj pheej yig.
• Lub hnab yas T-shirt nrov tshaj plaws yog ua hauv vib nas this. Qhov no txhais tau hais tias kev tsim cov hnab tsis xav tau ntau lub zog.

Txawm li cas los xij, polyethylene muaj ib qho teeb meem uas tau xav tsis ntev los no. Cov khoom siv yas xyaum tsis sib cais. Lawv ua rau muaj teeb meem loj rau ecology ntawm lub ntiaj teb. Lawv qhov kev pov tseg yuav tsum muaj ntau yam khoom siv thiab cov nqi zog. Vim li ntawd, cov teb chaws tsim kho tau pib hloov mus rau lwm txoj hauv kev rau cov hnab yas - hnab ntawv.