PVC pem teb calendering txoj kev yog ib tug npaum thiab tas mus li txheej txheem ntau lawm, uas yog tshwj xeeb tshaj yog haum rau zus tau tej cov homogeneous thiab permeable qauv nplooj ntawv (xws li coj mus muag homogeneous permeable flooring). Nws cov tub ntxhais yog ua kom cov molten PVC rau hauv ib txheej nyias nyias los ntawm ntau lub voj voog, thiab tom qab ntawd txias kom zoo. Cov hauv qab no yog cov kauj ruam tshwj xeeb thiab cov ntsiab lus tseem ceeb ntawm kev tswj xyuas:
I. Txheej txheem Calendering
Raw Material Pretreatment > High-speed kub sib tov, txias thiab txias sib tov, sab hauv thiab plasticizing, qhib sib tov thiab pub
Plaub-yob calendering, embossing / laminating, txias thiab shaping, trimming thiab winding
II. Step-by-step Operation Key Points thiab Technical Parameters
1. Raw Material Pretreatment thiab Mixing
Formula Composition (Piv txwv): - PVC resin (S-70 hom) 100 qhov chaw, - Plasticizer (DINP / ib puag ncig tus phooj ywg ester) 40-60 qhov chaw, - Calcium carbonate muab tub lim (1250 mesh) 50-80 qhov chaw, - Thaum tshav kub kub stabilizer (calcium zinc composite, 3-earst acid). ib feem, - Pigment (titanium dioxide / inorganic xim hmoov) 2-10 qhov chaw
Mixing txheej txheem *:
Kub sib tov: High-speed tov khoom (≥1000 rpm), tshav kub rau 120 ° C (10-15 feeb) kom cov PVC nqus cov yas; Kev sib xyaw txias: Cia txias kom qis dua 40 ° C (kom tiv thaiv cov pob), lub sijhawm sib xyaw txias ≤ 8 feeb.
2. Plasticizing thiab pub
- Internal Tov Khoom: Kub 160-170 ° C, Siab 12-15 MPa, Lub Sijhawm 4-6 feeb → Sib sau ua cov roj hmab homogeneous;
Qhib Tov Khoom: Twin-yob kub 165 ± 5 ° C, Cov Menyuam Gap 3-5 mm → Txiav rau hauv ib daim hlab rau kev pub noj tsis tu ncua rau lub calender.
3. Four-roller Calendering (Core Process)
- Cov txuj ci tseem ceeb:
- Roller Speed Ratio: 1#: 2#: 3#: 4# = 1: 1.1: 1.05: 1.0 (kom tiv thaiv cov khoom sib txuam);
- Qhov Nruab Nrab Nruab Nrab: Cov Menyuam 2 yog tsim los nrog 0.02-0.05mm yas kom offset thermal bending deformation. 4. Kev kho deg thiab lamination
Embossing: Embossing roller (silicone / steel) kub 140-150 ° C, siab 0.5-1.0 MPa, ceev sib phim rau txoj kab calendering;
Substrate Lamination (Yeem): iav fiber ntau lev / tsis-woven npuag, preheated (100 ° C), yog laminated nrog PVC yaj ntawm cov menyuam # 3 los txhim kho qhov ntev stability.
5. Txias thiab ua kom zoo
Peb-theem cua txias rau cov menyuam kub:
Kev Tswj Kev Nyuaj Siab: Winding nro 10-15 N / mm² (kom tiv thaiv kom txias thiab deformation).
6. Trimming thiab Winding
- Laser Online Thickness Measurement: Real-time tawm tswv yim kho qhov sib txawv ntawm cov menyuam (qhov tseeb ± 0.01mm);
- Tsis Siv Neeg Trimming: Cov seem dav ≤ 20mm, rov siv dua thiab pelletized rau rov siv dua;
- Winding: qhov nro qhov chaw winding, yob txoj kab uas hla Φ800-1200mm. III. Txheej txheem nyuaj thiab kev daws teeb meem
1. Thickness tsis sib xws. Ua rau: Cov menyuam kub hloov pauv> ± 2 ° C. Kev daws: Kaw-Loop Thermal Oil Temperature Control + Kaw-Drilled Roller Txias.
2. Nto Gas. Ua rau: Tsis txaus Mixing Degassing. Kev daws: Nqus cov khoom siv sab hauv (-0.08 MPa).
3. Ntug tawg. Ua rau: Tshaj txias txias / Nqus Nqus. Kev daws: Txo cov cua txias hauv pem hauv ntej-End thiab ntxiv qhov chaw txias txias.
4. Qauv Tuag. Ua rau: Tsis txaus Embossing Roller Siab. Kev daws: Ua kom cov Hydraulic Siab rau 1.2 MPa thiab ntxuav cov Roller Surface.
IV. Environmentally Friendly thiab Performance Upgraded txheej txheem
1. Lead-Free Stabilizer Hloov:
- Calcium-Zinc Composite Stabilizer + β-Diketone Synergist → Passes EN 14372 Migration Test;
2. Environmentally Friendly Plasticizer:
- DINP (Diisononyl Phthalate) → Cyclohexane 1,2-Dicarboxylate (Ecoflex®) Txo Ecotoxicity.
3. Pov tseg Recycling:
- Crushing scraps → Sib tov nrog cov khoom tshiab ntawm qhov sib piv ntawm ≤30% → Siv rau hauv cov txheej txheej txheej.
V. Calendering vs. Extrusion (Daim ntawv thov sib piv)
Yam khoom: Homogeneous perforated flooring / Multi-layer composite, Multi-layer co-extrusion (hnav-resistant txheej + ua npuas ncauj txheej)
Thickness Range: 1.5-4.0mm (Qhov tseeb ± 0.1mm), 3.0-8.0mm (Qhov tseeb ± 0.3mm)
Nto tiav: High gloss / Precision embossing (ntoo grain imitation), Matte / ntxhib ntxhib los mos
Daim Ntawv Thov: Homogeneous perforated flooring hauv tsev kho mob thiab chaw kuaj mob, SPC interlocking flooring rau tsev
Summary: Tus nqi tseem ceeb ntawm txoj kev calendering yog nyob rau hauv "siab precision" thiab "siab sib xws"
- Txheej txheem zoo:
- Precision roller kub tswj → Thickness variation coefficient <1.5%;
- In-line embossing thiab lamination → Ua tiav pob zeb / hlau pom kev cuam tshuam;
- Cov khoom siv:
Homogeneous perforated PVC flooring nrog siab qhov ntev ntawm kev ruaj ntseg (xws li Tarkett Omnisports series);
- Txhim kho kev xaiv:
- Kev Tswj Xyuas Kev Txawj Ntse: AI-powered dynamic roller gap adjustment (real-time thickness tawm tswv yim);
- Kev Siv Hluav Taws Xob: Cov dej txias dej khib nyiab yog siv rau cov khoom siv raw preheating (txuag 30% zog).
> Nco tseg: Hauv kev tsim khoom tiag tiag, qhov kub thiab txias ntawm cov menyuam yuav tsum tau hloov kho raws li cov qauv fluidity (melt Performance index MFI = 3-8g / 10min) kom tsis txhob degradation (daj index ΔYI <2).
Post lub sij hawm: Lub Xya hli ntuj-30-2025
