Stretch film gaw logistics packaging hta grai lang ai polymer arung arai langai mi re. Shi a synthesis process gaw, dai arai a bungli galaw ai lam hte gat lawk shingjawng ai lam hpe hkrak hkra machyi shangun ai. Htingbu htingbyen ni hpe makawp maga ra ai lam ni hpe grau kaja hkra galaw ai hte packaging ra ai lam ni hpe garan ginhka ai lam ni hpe grau kaja hkra galaw ai hte rau, stretch film a synthesis hpaji masa mung, n-gun jaw ai lam ni hpe ayan galaw nga ai. Ndai laika hta, raw material lata ai lam, polymerization ladat kaw nna, sumla hkrung galaw ai hpaji masa du hkra, n-gun jat ai sumla hkrung a core synthesis ladat hpe tup hkrak sawk sagawn na re.
Raw material lata ai lam: foundation gaw bungli galaw ai lam hpe dawdan ya ai
Stretch film a madung raw gaw polyethylene (PE) rai nga ai. Yaw shada ai lam hta hkan nna, npu na-density polyethylene (LDPE), linear npu n-gun n-gun-denslee (LLDPE) shing nrai tsaw ai-denslee (HDPE) hpe lata la mai ai. LDPE gaw ndai sumla hkrung hpe kaja ai galai shai ai lam hte asan sha chye na hkra galaw ya ai, LLDPE gaw tensile n-gun hte puncture hpe ninghkap lu ai atsam hpe grai kaja hkra galaw ya lu ai. Kade nna ai aten hta, grup yin hpe makawp maga ai metalocene polyethylene (mPE) gaw, shi a grau bung ai molecular structure hte grai kaja ai galaw shapraw ai lam ni a majaw, tsaw dik htum ai n-gun rawng ai arung arai langai mi tai wa sai. Dai hta n-ga, laksan ra kadawn ai lam ni hpe hkap la lu na matu, arung arai nkau mi gaw, Tackifier, UV hpe pat shingdang ai (sh) antioxidants zawn re ai additives ni hpe jat bang na re.
Polymerization ladat: monomer kaw nna polymer du hkra
Polyethylene a hkrang shapraw ai lam hpe madung hku nna ethylene a polymerization reaction hku nna lu la ai. Common process ni hta tsaw ai- hpe polymerization hte n law ai- hpe n-gun n law ai polymerization ni lawm ai. High{4}}} pressure polymerization ( tubular ladat (sh) kettle ladat zawn re ai) gaw LDPE hpe shapraw na matu htuk manu ai. Reaction masa ni gaw grai sawng ai hte free radical polymerization hpe grai katsi ai hte n-gun kaba ai npu hta ra ai. Low-} hpe n-gun jaw ai polymerization (gas phase ladat (sh) hparan ladat zawn re ai) hpe lang nna LLDPE hte HDPE hpe shapraw lu ai. Ziegler- Natta catalyst (sh) metallocene catalyst hpe lang chye ai. Reaction masa ni gaw n-gun n rawng ai hte molecular weight garan ginhka ai lam hpe hkang lu ai. Dai ni na aten na ladat ni gaw, galaw shapraw ai atsam hpe grau kaja hkra galaw na matu hte n-gun jai lang ai lam hpe shayawm na matu, gas{12}}pse fluided bed hpaji hpe jai lang chye ai.
Film byin wa ai hpaji masa: blow molding hte cast film lapran na game
Crapping film a hkrang gaw madung hku nna galaw ai lam lahkawng hta madung nga ai: blow molding hte cast film. Dai blow molding ladat gaw, molten resin hpe annular die baw hku nna tubular film de jahkrat kau nna, dai hpang katsi, gang je kau nna, bai gram lajang ya ai. Ndai ladat gaw n law ai- cost rai nna, kaba ai- scale a matu htuk manu ai, raitim, sumla hkrung a n-gun atsam gaw loi mi n-gun n rawng ai. Cast film ladat gaw flat die baw hpe lang nna, sumla hkrung hpe hkrak shapraw na matu, dai hpe katsi ai roller hte lawan ladan hkrang shapraw ya ai. Hpang jahtum galaw ngut sai arai gaw grau bung ai n-gun hte grau dan dawng ai lam nga ai, raitim, jak rung ni a gumhpraw bang ai lam gaw kaba ai. Kade nna ai aten hta, multi{7}}layer co-layer ni gaw, madung byin wa sai. Resin layers ni hpe n bung ai atsam, n-gun kaba ai, asan sha chye na lu ai hte kaja ai n-gun atsam ni hpe yu reng ai hku nna aten langai hta sha lu la mai ai.
Hkringmang daju
Mungkan ting na grup yin tara ni hpe grau ngang kang hkra galaw ai hte maren, n-gun jat ai lam a synthesis hpaji masa gaw, hkrat sum ai lam hte loi ai hku bai jai lang ai lam de sit sa wa nga ai. Bio- hta lawm ai polyethylene hpe jai lang ai lam (shan su ai ethanol kaw na galaw ai PE zawn re ai) hte n-gun yawm mat chye ai additives ni gaw htunghking hku galaw ai wan sau arung arai ni hpe loi loi hte galai shai kau ai lam rai nga ai. Dai aten hta, n-gun n rawng ai organic compound (VOCs) hpe shayawm ai gaw, synthesis galaw ai lam hpe grau kaja hkra galaw ai hku nna, hpaga lam a myit maju jung ai lam hpe mung myit maju jung wa sai.
Stretch film a synthesis hpaji masa gaw, polymer chemistry, arung arai hpaji hte grup yin hpaji masa ni a ginra law law a rawt jat galu kaba wa ai lam hpe hpawng de da ai. Htawm hpang de, n-gun nnan ni hte hkai sun ni hpe garan ginhka ai lam ni law wa ai hte maren, stretch film a bungli galaw ai lam hte ngang grin ai lam gaw grau kaja wa na re, mungkan ting na packaging hpaga lam a matu grau kaja ai hparan ladat ni hpe jaw ya lu na re.