C-PAK TYPE
CP23D cover tape is a transparent
polyester film with static dissipative properties on both sides and heat
sealable over a wide range of temperatures, thus making it immensely suitable
for different materials of carrier tape.
The adhesive system is specially developed
for tight range in seal strength, as an addition to its stable seal strength.
Construction: 0.0254mm
Polyester film (polyethylene terephthalate)
0.0254mm Heat activated adhesive
GENERAL PROPERTIES ( Typical value)
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METHOD |
VALUE |
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Break Strength |
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ASTM D-882 |
6 kg/ mm2 |
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Elongation |
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ASTM D-882 |
100% min |
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Luminous Transmittance |
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ASTM D1003-95 |
90% |
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Haze |
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ASTM D1003-95 |
75% Max |
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Surface Resistivity (both sides) |
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ASTM D257 |
£ 1011 ohms/ sq |
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Peel Strength Limit (see recommended sealing parameters) |
20g - 80g |
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Width (mm) |
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5.3, 9.3, 13.3, 21.0, 25.5, 37.5, 49.5 |
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Width Tolerance |
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± 0.1 mm |
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Thickness |
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0.051 to 0.061 mm |
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Length |
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300 m |
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Base Material |
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POLYESTER |
Recommended sealing temperature as follows:
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Number of sealing overlaps |
Sealing Temperature °C |
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3x |
170 to 185 |
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4x |
165 to 180 |
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6x |
160 to 180 |
Other Recommended
Sealing Parameters (see Notes):
Sealing Shoe Width x length: 0.018” x 1.9” (0.457x 48mm)
Sealing time : 0.3 sec
Pressure: 30 psi
Sealing Mode: Reciprocating
Peel Test Speed during peeling: 300mm ± 10mm per minute
Angle of pull test: Between 165 to 180 degrees
Note:
1. The recommended sealing parameters are based on embossed Cpak’s carrier tape material made of Polystyrene. The sealing parameters for other compatible carrier tape materials are available upon request.
2. Positioning the seal bead away from the slit edge of cover tape will keep adhesive from being forced out from the edge . Seal bead should remain away from the edge of tape to minimize potential breakage of the film. Use of a narrow seal width (0.015” – 0.020”) gives more control over the position in which the seal is placed relative to the carrier tape pocket, sprocket holes and slit edge of the cover tape.
PACKAGING:
WIDTHS: Widths available to fit all standard carrier tapes.
SPLICE FREE LENGTHS: 300 Meters +6/-0
500 Meters +10/-0
CORES: 3” I.D.
COLOR: Natural*
Slight variations which do not affect product performance are normal.
Storage:
CP23D cover tapes should be stored in a controlled environment . The optimum conditions defined below will yield a shelf life of two years from the date of manufacturing date found on the core label and ensure the maximum service life of the product.
Temperature: 27°C+/-10°C
Humidity: 50% R.H. +/-20%
Aging Test:
Tested without component at 55°C/80% RH for 1000 hrs without problem.