Plastic raw materials processing process hi a bik takin rubber particle te melting, flow leh cooling te chu finished products ah a ni. A lum a, a hnuah a lum leh a ni. Plastic chu particle atanga a pianzia hrang hranga thlak danglam dan a ni bawk. Processing hi stage hrang hrang process thlirna atanga sawifiah a ni ang.
1.Melting a ni
Device heater hian raw material particle te chu zawi zawiin fluid flow-ah a hmin tir a, hei hi raw material hrang hrang temperature adjustment atan a tha ber a ni. Temperature tihsan hian raw materials flow a ti chak zawk dawn a, hei hian efficiency a ti sang thei a, mahse yield a tichiang lo mai thei. A tling tur a ni Balance. Chu bakah, PP-a thermal cracking sang lutuk hian a nghawng tha leh a ziarang chu a siam chhuah laiin raw materials te chu filling tling lo emaw, backflow emaw awm loh nan die-ah awlsam taka luang chhuak tura siam a tha ber a ni. Backflow tih awmzia chu raw materials flow chu output rate aiin a rang zawk tihna a ni. Average flow efficiency tihpun hi MFR tihpun nen a inang a, hei hi processing atana hmanraw awm zinga pakhat a ni a, mahse MFR distribution pangngai lo a thlen bawk a, hei hian instability a tipung thei a, hei hian defect rate a tisang thei a ni. Mahse, PP finished products hi application avang hian dimensional precision sang tak nei product an ni lo va, chuvangin impact a lian lo hle.
2. Screw hmanga siam
PP processing tam zawk hi screw hmanga fluidity khalh a nih avangin screw design hian nghawng lian tak a nei a ni. Diameter lian leh te hian output a nghawng a, compression ratio hian pressure value leh output leh finished product effect a nghawng bawk. Hei hian thil chi hrang hrang a huam tel bawk. (Color masterbatch, additives leh modifiers) te chu mixing effect a ni. Raw material flow hi heater-ah a innghat ber a, mahse raw material-a frictional heat hian frictional heat a siam bawk ang a, chu chuan fluidity a ti chak a, chuvangin screw compression ratio a tlem a, flow a tlem a, rotation speed pawh tihsan a ngai a ni. Frictional heat chu compression ratio lian tak nei screw aiin a tam zawk ang. Chuvangin plastic processing lamah hian master an awm lo tih an sawi fo thin a, machine hnathawh dan uluk taka hrethiamtu chu master a ni. Raw materials lumna hi heater mai ni lovin, frictional heat leh suffocation time pawh a ni. Chuvangin hei hi practical problem a ni a, experience hian production problem leh efficiency chinfelna kawngah a pui a ni. Screw hian mixing effect tha tak a neih a ngai a nih chuan a chang chuan two-stage screw hrang hrang emaw twin-shaft screw emaw design a ni a, screw chi hrang hrang section hrang hrangah then a ni a, chu chuan mixing effect hrang hrang a nei thei a ni.
3. Lu mold emaw die emaw
Plastic reshaping hi mold emaw die head emaw ah a innghat a ni. Injection molded product hi three-dimensional a ni a, mold pawh a buaithlak zawk. Shrinkage rate hi ngaihtuah a ngai a ni. A dangte chu flat, strip, leh needle ang chi continuous product die head te an ni. Special shape an nih chuan heterogeneous anga classified a ni a, cooling leh shaping chungchanga harsatna awm chu ngaihven nghal a ngai a ni. Plastic machine tam zawk hi injection syringe ang maia siam a ni a, screw-in a khalh extrusion force hian outlet te te chungah pressure nasa tak a siam ang a, hei hian production efficiency a ti sang ang. Die head hi plane anga design a nih chuan, a chung zawng zawngah raw materials chu a ruala sem dan tur, hanger die head design hi a pawimawh hle a, pressing opportunity mawi tak hian fish gill pump-a raw material supply nghet tak a tipung a ni.
4. A lumna
Sprue gate-a raw materials theh bakah hian injection mold hian cooling water channel cooling raw material design a nei bawk. Extrusion molding hian cooling effect a neih theih nan roller chhunga cooling water channel a rinchhan a, air knife tih loh chu, cooling water chu blowing bag-ah direct-in a theh a, cooling method chu hollow blowing ang chi a ni.
5. Extension tihzauh
A siam zawh tawh chu reprocessing leh extension a nih chuan a effect a ti sang ang. Entirnan, strapping belt hi hmalam leh hnunglam rollers te hian speed hrang hrangin an khalh a, chu chuan extension effect a siam thin. Thil siam zawh tawh oriented extension part tensile strength a tichak a, a phelh awlsam lo a, mahse horizontal direction-ah chuan a tear a awlsam hle. Molecular weight distribution hian high-speed production laiin extension effect a nghawng bawk. Fiber telin extruded product zawng zawng hian extension hrang hrang an nei vek. Vacuum leh pressure siam hi extension dang anga ngaih theih a ni bawk.
6. Shrink rawh
Raw material eng pawh hian shrinkage problem a nei a. He shrinkage hi thermal expansion leh cold shrinkage leh crystal siam chhuah laia internal stress lo awm vang a ni. A tlangpuiin thermal expansion leh contraction hi hneh a awlsam zawk. Processing-a cooling time tihsei a, pressure awm chhunzawm zel hmanga tih theih a ni. Crystalline raw material hian amorphous material aiin shrinkage difference lian zawk a nei fo thin a, hei hi PP tan chuan hmun sang khat vel a ni. Sawm leh paruk, mahse ABS hi sang li vel chauh a ni. He danglamna hmun hi a lian hle. He part hi mold-ah hneh a ngai a, a nih loh leh additives shrinkage tihziaawmna tur dah tel a ni fo thin a, chu chuan LDPE chu extruded plate-ah necking problem tihziaawm nan an dah fo thin.
GTMSMART Machine hmanga siam a ni thermoforming machine hmanga siam a nis: 1.1.
Post hun chhung: Nov-18-2020