Film Application & Viscosity

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Application of Film preparation, Laboratory Mixers, Drying Time & Viscosity

A good Wet film preparation is not only important for the durability of the coating when it is dried, but also very crucial in terms of film thickness uniformity, color, and appearance. For the applicator, wet film preparations help determine methods of application and device adjustment. While some paint manufacturers will indicate the amount of wet film to be applied in order to obtain a certain dry film, others prefer not to, as paint applicators differ in the amount of thinner used. There is a wide range of devices used for wet film preparation, ranging from the common paint drawdown bar technique to automatic film applicators/machines or paint film applicators. Since Automatic film applicators can be set for constant speed and pressure on painted samples, they ensure consistency of drawdowns, which is not the case when many operators draw down the same film. Drawdown charts and Drawdown cards are equally used to quality control of the paint properties. While the Drawdown charts are used to examine industrial, wood coatings, automotive, inks, architectural, and cosmetic products, the Drawdown cards are used to examine some coating properties like opacity, spreading rate, penetration behavior, and flow and leveling properties 

 

 The wet film takes time to dry and cure. The different stages of drying and curing can be accurately detected using a recorder under controlled environmental conditions. The wet film drying process begins with the shrinking of the paint and the appearance of a thin film on the surface. The end result of the curing process is a dry film or volume solid on the substrate. Operators often use two methods, depending on whether a thinner is added or not, to calculate the approximate dry film thickness (end result) from wet film thickness applied. A calculation without Thinner: Wet Film Thickness (WFT) = Dry Film Thickness (DFT) ÷ Percent Solids by Volume: Calculation with Thinner: WFT = DFT ÷ (Volume solids content ÷ 100% + % of thinner added).  ASTM D5895 defines the standard test methods for evaluating drying and curing during film formation of organic coating using mechanical recorders.

The higher viscosity of a film means high resistance to flow or deformation. 

 

 

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  1. Laboratory Mixer BEVS 2501/ 2A, 750W, Auto Lift, 3 Liter Vessel -Double Wall, 4 disc 110V/60Hz, 280mm lifting distance, 60-6000 speed
    This Laboratory Mixer engineered to high- speed stir, dissolve and disperse liquid and pigment solidification material in the coating, paint, ink, pigments, cosmetics, foodstuff, resin, adhesive, latex, medicine, petroleum , and other fields. The Laboratory Mixer TC 2501 series adopts frequency- adapter to adjust the speed with the advanced touch-screen control design to produce a colloidal suspension that does not settle at the bottom of the container. It will disperse, mix and grind by changing the different impellers. Use the touch- screen technology to set the speed ( RPM) and the time to disperse, mix and grind. It's the best choice for R& D, laboratory and spot testing. In includes: Touch- screen control technology and emergency switch Time Adjustable Maximum Dispersion Volume: Maximum Speed: 9000 rpm Electromotor: Frequency modulation motor adoption Lifting System: Manual or automatic lift Operating Menu: English Learn More
    $5,075.00
  2. Laboratory Mixer BEVS 2501/ 3A, 1100W, Auto Lift, 5 Liter Vessel
    This Laboratory Mixer engineered to high- speed stir, dissolve and disperse liquid and pigment solidification material in the coating, paint, ink, pigments, cosmetics, foodstuff, resin, adhesive, latex, medicine, petroleum, and other fields. The Laboratory Mixer TC 2501 series adopts frequency- adapter to adjust the speed with the advanced touch-screen control design to produce a colloidal suspension that does not settle at the bottom of the container. It will disperse, mix and grind by changing the different impellers. Use the touch- screen technology to set the speed ( RPM) and the time to disperse, mix and grind. It's the best choice for R& D, laboratory and spot testing. In includes: Touch- screen control technology and emergency switch Time Adjustable Maximum Dispersion Volume Maximum Speed: 9000 rpm Electromotor: Frequency modulation motor adoption Lifting System: Manual or automatic lift Operating Menu: English Learn More
    $5,367.00
  3. BEVS 1813 Drying Time Recorder - Drawdown function & one cube applicator -ASTM D5895
    BEVS 1813 with 3 control motors - is a touch screen and fully digitally controlled tester with drawdown function. . It conforms to improvements in devices for measuring the drying time of surface coating materials and defining the different stages in the drying process and behavior of a variety of paints and coatings. With its excellent reproducibility, it accurately evaluates drying time in all stages. Its ergonomic design, touch screen control, customized user-defined start time, and test time offer easy operation. The operator can set the test time between 30 seconds -to 48 hours based upon requirements. Interrupt a track without impacting the others. The holder is used to simply apply the paint to the glass strip to achieve film combined with a cube applicator. It is made of high-grade stainless steel to place the glass strip to allow the operator to hold the strip in position, cube applicator is positioned on the glass strip and fill paint into the applicator depending on the demand and then the applicator is drawn to the end of the glass strip. incl. Match with 320*25*3mm glass strip and Bevs 1805/1 cube applicator for drawdown. Reset device after drawdown to resume drying time function. Use with Bevs 1813- PO1 vision system to automatically record track results. Cube Applicator, Glass strip- Holder 6 Tracks w/ 3 sets of two. Technical Specification: Dimension: 558×368×185 mm Number of tracks:6 Length of strips: 300 mm Stylus diameter: 1.2mm Glass strip size: 320*25*3mm / 320*60*3mm Driver:3 sets of motors, 2 track/motor Drying Time: -Standard track: 30 seconds-240hrs.; Except for the standard time, the operator can customize the start and test time. - Comes with one cube applicator- Bevs 1805/1 Learn More
    $4,325.00
  4. BEVS 1811/2 Automatic Film Applicator w/ Vacuum Bed & Built-in Vacuum pump Speed 50-300mm/sec-ASTM D823/C

    BEVS 1811/2 touch screen, automatic vacuum applicator is also available with an electrically heated vacuum bed. The bed temperature can be set from ambient +5°C to + 150°C and temperature is uniform over the whole bed. Software w/ advanced touch screen technology Minimum temperature: Ambient +5ºC Adjustable speed. Maximum temperature: +150ºC Temperature accuracy: 1ºC Report output: tab in the coating's name, viscosity, thickness for the report to be output Technical Specifications: Speed: 50-300mm/sec Stroke Length (Max): 360mm Test Panel: 421*300mm Test platform: Heated Vacuum Bed Bar Coater Capacity: Diameter 10-13mm, Length 320mm Power: 120V/60Hz

    Learn More
    $4,882.00
  5. BEVS 1815 Drying Time Recorder ASTM D5895
    NEW
    BEVS 1815 Drying Time Recorder ASTM D5895

    BEVS 1815 is a touch screen and fully digitally controlled tester. It conforms to improvements in devices for measuring the drying time of surface coating materials and defining the different stages in the drying process and behavior of a variety of paints and coatings. With its excellent reproducibility, it accurately evaluates drying time in all stages. Its ergonomic design, touch screen control, customized user-defined start time and test time offer easy operation. The operator can set the test time between 1 to 48 hours based upon requirements. The holder is used to simply apply the paint to the glass strip to achieve film combined with a cube applicator. It is made by high-grade stainless steel to place the glass strip to allow the operator to hold the strip in position, cube applicator is positioned on the glass strip and fill paint into applicator depending on the demand and then applicator is drawn to the end of the glass strip. incl. Cube Applicator, Glass strip- Holder 10 Tracks, 6, 12, 24, 48 hr., w/ 5 sets of two

    Technical Specification:

    Dimension: 550×530×200 mm

    Number of tracks:10

    Length of strips: 300 mm

    Driver:5 sets of motors, 2 track / motor

    Drying Time: -Standard track: 6,12,24,48 hours; -Customized track (track 1):

    Except for the standard time, the operator can customize the start and test time.

    Function reset during the testing: During the test,operator can change the test time and re-start again.

    Learn More
    $3,125.00
  6. BEVS 1811/2 Automatic Film Applicator w/ Vacuum Bed & Built-in Vacuum pump Speed 10-140mm/sec-ASTM D823/C

    BEVS 1811/2 touch screen, automatic vacuum applicator is also available with an electrically heated vacuum bed. The bed temperature can be set from ambient +5°C to + 150°C and temperature is uniform over the whole bed. Software w/ advanced touch screen technology Minimum temperature: Ambient +5ºC Adjustable speed. Maximum temperature: +150ºC Temperature accuracy: 1ºC Report output: tab in the coating's name, viscosity, thickness for the report to be output Technical Specifications: Speed: 50-300mm/sec Stroke Length (Max): 360mm Test Panel: 421*300mm Test platform: Heated Vacuum Bed Bar Coater Capacity: Diameter 10-13mm, Length 320mm Power: 120V/60Hz

    Learn More
    $4,882.00
  7. BEVS 1811/3  Automatic Film Applicator w/Electrically Heated Vacuum Bed & Built-in Vacuum pump -speed 50-300mm/sec
    NEW
    BEVS 1811/3 Automatic Film Applicator w/Electrically Heated Vacuum Bed & Built-in Vacuum pump -speed 50-300mm/sec

    Bevs 1811/3 Film Applicator - touch screen technology, automatic vacuum applicator is also available with an electrically heated vacuum bed. The bed temperature can be set from ambient +5°C to + 150°C and temperature is uniform over the whole bed.

    Main Features

    • Software w/ advanced touch screen technology
    • Minimum temperature: Ambient +5ºC Adjustable speed.
    • Maximum temperature: +150ºC
    • Temperature accuracy: 1ºC Report output: tab in the coating's name, viscosity, thickness for the report to be output Technical Specifications: Speed: 50-300mm/sec
    • Stroke Length (Max): 360mm Test Panel: 421*300mm
    • Test platform: Heated Vacuum Bed Bar Coater Capacity: Diameter 10-13mm, Length 320mm Power: 230±10%, 50/60Hz
    Learn More
    $8,323.00
  8. Bevs 112 Krebs Touch Screen Viscometer -Automatic, incl. Spindle & Can
    NEW
    Bevs 112 Krebs Touch Screen Viscometer -Automatic, incl. Spindle & Can
    This is an advanced touch screen automatic control viscometer- the most suitable for measuring the non- Newtonian fluid such as coating, paint, adhesives, pulp, printing ink etc. Main Features: Automatic measuring The spindle automatic lift Touch-screen operation Measurement Unit: KU, g, cp Start test time and stop time can be preset Real-time display measurement graph Measurement report output available With temperature probe Technical Specification: Range:40~141KU/27-5274cp/32-1099g Resolution:0.1KU/5cp/1g Accuracy:±1% of full scale Repeatability:±0.5% of full scale Rotation speed:200rpm±1rpm Power consumption:Max.35W Power:200~250V or 100-120V Learn More
    $4,595.00
  9. BEVS 1811/3  Automatic Film Applicator w/Electrically Heated Vacuum Bed & Built-in Vacuum pump -speed 10-140mm/sec
    NEW
    BEVS 1811/3 Automatic Film Applicator w/Electrically Heated Vacuum Bed & Built-in Vacuum pump -speed 10-140mm/sec

    Bevs 1811/3 Film Applicator - touch screen technology, automatic vacuum applicator is also available with an electrically heated vacuum bed. The bed temperature can be set from ambient +5°C to + 150°C and temperature is uniform over the whole bed.

    Main Features

    • Software w/ advanced touch screen technology
    • Minimum temperature: Ambient +5ºC Adjustable speed.
    • Maximum temperature: +150ºC
    • Temperature accuracy: 1ºC Report output: tab in the coating's name, viscosity, thickness for the report to be output Technical Specifications: Speed: 50-300mm/sec
    • Stroke Length (Max): 360mm Test Panel: 421*300mm
    • Test platform: Heated Vacuum Bed Bar Coater Capacity: Diameter 10-13mm, Length 320mm Power: 230±10%, 50/60Hz
    Learn More
    $8,323.00
  10. BEVS 1131/860 - Intelligent Rotothinner, incl. Spindle (1-860P), ISO 2884, BS 3900 A7
    NEW
    BEVS 1131/860 - Intelligent Rotothinner, incl. Spindle (1-860P), ISO 2884, BS 3900 A7
    BEVS 1131/860 Intelligent Rotothinner measures the viscosity of most non-Newtonian and Newtonian fluids. The speed is 562 rpm. It is a two-in-one instrument for measuring the viscosity of materials and on-line inspection of products. Continuously monitor the viscosity of the test sample when adding thinner or additives. This instrument can also start to test the viscosity immediately. The testing time can be freely chosen by operators, and the temperature of samples can be measured in real time. It provides accurate data related to shear properties. It is ideal for R&D, laboratory and QC application. Main Features: Automatic lifting Automatic measurement High definition touch screen display High precision measuring motor Easy to operate and use Data saving and output Technical Specification: Spindle speed:562 rpm ± 1% Spindle:3 models of spindles Measuring ranges: Spindle 1: 0 - 25P 0 - 2500cP Spindle 2: 0.1 - 80P 10 - 8000cP Spindle 3: 1 - 360P 100 - 36000cP Resolution:0.1P 1Cp Accuracy: ±1%(full scale) Repeatability:±0.5%(full scale) Sample can: 250ml tin can Input voltage:100-240VAC / 50-60Hz Weight:10kg Learn More
    $3,895.00
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