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Carbonless Paper Specifications
Coated paper and construction carbonless paper consists of a top sheet, a bottom sheet, and possibly one or several intermediate sheets. The top sheet (CB) has a curl coat on the front side and a coating consisting of binder and microcapsules containing fill and color formers on the reverse side. The bottom sheet (CF) features a coating of binder and developer on the front side and a release coating on the reverse side. The intermediate sheets (CFB) contain the CF front side coating on the front and the CB reverse side coating on the back. These tables provide carbonless paper specifications.
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Weight %
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CB
|
CFB
|
CF
|
|---|
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Paper
|
92-94%
|
85-89%
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92-94%
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Binder
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3-6%
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2-6%
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1-4%
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Microcapsules
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1-4%
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4%
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-
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Developer
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-
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1-4%
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2-4%
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The microcapsules are designed to rupture at a pressure of about 90,000 Pa (>1,270 psig) and will release their fill consisting of colorformers and transfer agents to the developer sheet.
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Property
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CB
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CFB
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CF
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|---|
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Sheet weight
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79.0 gsm
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82.8 gsm
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77.5 gsm
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Caliper
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115m
|
108m
|
98m
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Moisture
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3.9%
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3.9%
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3.9%
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Brightness
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92.0
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-
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-
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Image transfer
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-
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Black
|
Black
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Odor
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Virtually Odorless
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-
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-
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