High-speed roll coating with complex rheology fluids

被引：18

作者：

Ascanio, G

Carreau, PJ

Tanguy, PA

机构：

[1] Natl Autonomous Univ Mexico, Ctr Appl Sci & Technol Dev, CCADET, Mexico City 04510, DF, Mexico

[2] Ecole Polytech, Ctr Appl Res Polymers & Composites, CREPEC, Dept Chem Engn, Montreal, PQ H3C 3A7, Canada

[3] Ecole Polytech, Dept Chem Engn, Res Unit Ind Flow Proc, URPEI, Montreal, PQ H3C 3A7, Canada

来源：

EXPERIMENTS IN FLUIDS | 2006年 / 40卷 / 01期

关键词：

D O I：

10.1007/s00348-005-0025-5

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The flow of high solids content suspensions and coating colors through the deformable gap of counter-rotating rolls at high speed was investigated. Measurements of nip pressure profiles in a laboratory film coater were conducted and flow visualization experiments downstream the nip were carried out. A high-speed video system allowed showing the formation, elongation and break up of filaments that yield the misting droplets. The role of rheology on misting was also investigated using shear and extensional data. Results show that misting, mainly generated by film splitting, is reduced when the extensional viscosity of the color is larger.

引用

页码：1 / 14

页数：14

共 32 条

[1] Extensional rheology of coating suspensions in relation with misting in film coaters [J].

Ascanio, G ;

Carreau, PJ ;

Réglat, O ;

Tanguy, PA .

NORDIC PULP & PAPER RESEARCH JOURNAL, 2005, 20 (01) :48-53

[2]

Ascanio G, 2002, CAN J CHEM ENG, V80, P1189

[3]

ASCANIO G, 2002, P 11 INT COAT SCI TE, P44

[4]

Carreau P.J., 1997, RHEOLOGY POLYM SYSTE

[5]

Carruthers P., 1993, Proceedings of the Workshop on QCD Vacuum Structure and Its Applications. QCD Vacuum Structure, P1

[6]

CARVALHO M, 1996, THESIS U MINNESOTA

[7] Deformable roll coating flows: Steady state and linear perturbation analysis [J].

Carvalho, MS ;

Scriven, LE .

JOURNAL OF FLUID MECHANICS, 1997, 339 :143-172

[8]

CARVALHO MS, 1994, TAPPI J, V77, P201

[9] Forward roll coating of Newtonian fluids with deformable rolls: An experimental investigation [J].

Cohu, O ;

Magnin, A .

CHEMICAL ENGINEERING SCIENCE, 1997, 52 (08) :1339-1347

[10] FORWARD ROLL COATING WITH DEFORMABLE ROLLS - A SIMPLE ONE-DIMENSIONAL ELASTOHYDRODYNAMIC MODEL [J].

COYLE, DJ .

CHEMICAL ENGINEERING SCIENCE, 1988, 43 (10) :2673-2684

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