Discount Carbonless Paper Factory, Exporters

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Discount Carbonless Paper Factory, Exporters

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Product Description

Technical Specification

ITEMS		UNIT	TARGET VALUE	TEST METHOD	ISO STANDARD
Basis Weight		g/m²	CB 48, 50, 55 \| CFB 50 \| CF 48, 50, 55	GB/T 451.2	ISO 536
Basis Weight Variation		%	≤ ±5	-	-
Paper Density		g/cm³	≥ 0.67	GB/T 451.3	ISO 534
Optical Properties	Brightness (White)	%	≥ 85	GB/T 7974	ISO 2470
Optical Properties	Opacity (White)	%	≥ 60	GB/T 1543	-
Surface Strength (Medium Viscosity Ink)		m/s	≥ 0.3	Internal Method	-
Tensile Strength	MD	N.m/g	≥ 50	GB/T 453	ISO 1924
Tensile Strength	CD	N.m/g	≥ 15	GB/T 453	ISO 1924
Tear Resistance	CD	mN.m²/g	≥ 3.0	GB/T 455	ISO 1974
Tear Resistance	MD	mN.m²/g	≥ 2.5	GB/T 455	ISO 1974
Optical Density ΔD	CB (3 ply prints)	-	≥ 0.70	GB 16797	-
	CFB (5 ply prints)	-	≥ 0.78		-
	CF (5 ply prints)	-	≥ 0.80		-
Imaging Sensitivity	ΔD	%	≥ 85	GB 16797	-
Imaging Sensitivity	ΔE	%	≥ 80	GB 16797	-
Light Resistance (144h)		%	≥ 60	GB 16797	-
Friction Resistance (ΔE)		%	≤ 5	-	-
Curls		mm	≤ 15	GB 16797	-
Moisture on Delivery		%	6.5 ± 2	GB/T 462	ISO 287

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Frequently Asked Questions

What are the different types of carbonless paper listed (CB, CFB, CF)?

CB stands for Coated Back (top sheet), CFB for Coated Front and Back (middle sheet), and CF for Coated Front (bottom sheet). These layers work together to transfer images without carbon paper.

What is the standard basis weight available for these papers?

The standard weights include 48g, 50g, and 55g for CB and CF types, and 50g for CFB types, catering to various printing needs.

How is the imaging quality of this paper measured?

Imaging quality is measured through Optical Density (ΔD) and Imaging Sensitivity. The paper maintains a high ΔD (≥0.70 to 0.80 depending on the ply) to ensure clear, legible copies.

Does the paper meet international manufacturing standards?

Yes, our paper complies with several ISO standards, including ISO 536 for weight, ISO 534 for density, and ISO 1924 for tensile strength, ensuring consistent global quality.

What is the moisture content of the paper upon delivery?

The moisture content is carefully controlled at 6.5% ± 2%, which is optimal for preventing curling and ensuring smooth feeding through printing machines.

Why is the surface strength important for this paper?

Surface strength (≥ 0.3 m/s) ensures that the coating remains intact during high-speed printing, preventing dust buildup and ensuring a clean transfer of the chemical image.