I. Simsa ai lam ni :
Shanhte gaw n bung ai arung arai lahkawng rai tim, shanhte gaw macroscopic hkrang hte madung lam nkau mi hta bung ai lam ni hpe garan gachyan ma ai:
Porous structure: Lahkawng yan hpe hkum hkrang (sh) chemical foaming galaw ai lam ni hku nna galaw nna, kata kaw uniform (sh) n bung ai cell ni hte hpring chyat nga ai, dai gaw shan lahkawng hpe n-gun n law ai, shock{0}}}absorbing hte katsi ai-insulating byin shangun ai.
Elasticity: Elastic hkum hkrang ni hku nna, lahkawng yan gaw, n-gun n rawng ai sha, n-gun n rawng ai sha, shanhte a shawng na masa de bai nhtang wa lu ai.
Processability: Yawng hpe n-gun ja ai n-gun (mold) hku nna n-gun ja ai-shaped product amyu myu hpe galaw shapraw nna, gasket, shoe sole, floor MATS, etc.
Wan n-gun hpe n-gun jaw ai lam hte hka hpe n-gun jaw ai lam: Foaming ngut ai hpang lahkawng yan hta wan n-gun hpe grai kaja hkra n-gun jaw ai lam hte hka hpe n-gun jaw ai atsam ni nga ai.
II.Shai hkat ai lam ni:
. Shi a raw materials ni hpe grai law hkra lu la mai ai hte shi a galaw shapraw ai ladat (ga shadawn, langai mi gaw one{2}} aten foaming hte secondary molding zawn re ai ni re. Dai majaw, shi a manu gaw grai n law ai hte mass consumer arung arai ni a matu htuk manu ai. Silica gel gaw silicon dioxide a sung htum ai{5}}. Shi a raw materials hte hkyen lajang ai lam ni (platinum catalytic foaming zawn re ai) gaw grai sawng ai hte manu grai law ai.
2. Nbung hpe ninghkap lu ai atsam hte wan n-gun shayawm ai lam (ahkyak dik ai shai hkat ai lam) EVA gaw thermoplastic arung arai langai mi re. Katsi ai shara kaba ni hte hkrum katut ai shaloi (70-80℃jan), dai gaw n-gun ja ai, hka lim mat nna, wan hkru nna hka lim mat na re, dai majaw wan n-gun n-gun n-nga ai. Ndai lam gaw, n-gun ja ai makau grup yin ni hta galoi mung n mai lang ai lam a madung lam rai nga ai. Silicone gaw grai tsaw ai hte n-gun n law ai hpe grai kaja ai hku ninghkap lu ai thermosetting arung arai langai mi re. 250℃hta aten galu bungli galaw lu nna, 300℃hta katsi ai hpe aten kadun laman hkam sharang lu ai. Dai aten hta, wan n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-rawng ai n-gun hpe shayawm ya lu ai, wan wut ai shara kaw na kalang ta sat kau ai, hka htung hka htung ni hpe n shapraw lu ai, grai shim lum ai lam grai law ai.
3. Makau grup yin hku hkau lam hte shim lum lam: EVA a hkam kaja lam gaw grai shai hkat nga ai. High{2}} quality EVA gaw manam pyaw ai baw n nga ai, raitim, npu n-gun n-gun n-gun n rawng ai{{3} n-gun n law ai EVA gaw, bai jai lang ai arung arai ni hte n-gun n rawng ai foaming agent ni hpe lang mai ai majaw, ngam nga ai n-gun rawng ai manam pyaw ai baw ni hte n kaja ai arung arai ni (formamide zawn re ai) byin pru wa chye ai. Silicone gaw n-gun n rawng ai wa n re, n-gun n rawng ai hte manam pyaw ai baw n nga ai, grai ngang grin ai chemical atsam ni nga ai rai nna, n kaja ai arung arai ni hpe n shapraw lu na re. Dai gaw FDA (Amerika a malu masha hte tsi mawan ni hpe uphkang ai) hte LFGB (European Union Food Grade) zawn re ai grau sawng ai masat masa ni hpe lai di lu nna, tsi tsi ai lam hte malu masha hte matut mahkai ai lam ni hta grai lang mai ai.
. Tsun mayu ai gaw, EVA insole langai mi hpe aten galu lang ngut ai hpang, shi a npawt nhpang n-gun n-gun hpe bai n lu la nna, shi a elasticity hpe sum mat ai hpang, n-gun yawm mat na re. Silicone a compression set value gaw grai n law ai, lachyum gaw aten galu shingjawng ngut ai hpang shi a original masa de tsep kawp bai nhtang wa lu ai. Shi a ngang grin ai lam hte daw jau ai prat gaw EVA hta grau law ai.