JK Paper Brand Overview – A4 Copy Paper Series
| HS Code (Customs Tariff) | 4802.56.00 |
| Substance / Basis Weight | 70 / 75 / 80 GSM |
| Sheet Dimension | 210 x 297 mm (ISO 216 A4) |
| CIE Whiteness | 162% CIE Whiteness |
| ISO Brightness | 102 - 104% ISO Brightness |
| Opacity & Runnability | ≥ 95% (Duplex Printing Guaranteed) |
| Export Packaging | 500 Sheets/Ream (PE Barrier), 5 Reams/5-Ply Export Carton |
| Minimum Order (MOQ) | 1 x 20ft FCL (8,000 Reams / 1,600 Cartons) |
| Lead Time to Port | 7 - 10 Working Days (Factory Direct) |
Commercial Scope & Engineering Profile
JK Paper A4 Copy Paper Series
This page introduces the JK Paper brand series for A4 copy paper buyers. It supports brand discovery and should be used as a series overview, not as the main JK Copier product page.
For the primary product, use JK Copier A4 Paper. For 75gsm requirements, use the JK Copier 75gsm A4 Paper specification page.
Container Loading Matrix & OEM Private Label Program
- Loose Carton Loading: ~8,000 reams (1,600 master cartons of 5 reams) | Total net weight: ~19.5 - 20.0 Metric Tons
- Palletized Loading: ~7,800 reams (1,560 master cartons across 20 seaworthy fumigated pallets)
- Ream Configuration: 500 sheets / ream in high-barrier moisture-proof poly-coated wrapper
- Private Brand Wrapper: Customized brand artwork & color logo printing (4-color flexographic / gravure)
- Master Shipping Carton: 5-ply heavy-duty export corrugated carton with custom shipping marks & barcodes
- Flexible Incoterms: FOB Qingdao / Ningbo / Shanghai, CIF destination port with comprehensive cargo insurance
Laboratory Physical Properties & ISO Standards
Conditioned under ISO 187 standard atmosphere: 23°C ± 1.0°C and 50% ± 2.0% Relative Humidity.
| # | Physical Parameter | Test Standard | Standard 70 GSM | Premium 75 GSM | High-Performance 80 GSM |
|---|---|---|---|---|---|
| 01 | Substance / Basis Weight | ISO 536 | 70 ± 2.0 g/m² | 75 ± 2.0 g/m² | 80 ± 2.0 g/m² |
| 02 | Caliper / Sheet Thickness | ISO 534 | 96 ± 3 μm | 101 ± 3 μm | 106 ± 3 μm (High Bulk) |
| 03 | CIE Whiteness (D65/10°) | ISO 11475 | 158 - 162% | 160 - 164% | 160 - 165% |
| 04 | ISO Brightness (UV Included) | ISO 2470 | 100 - 102% | 101 - 103% | 102 - 104% |
| 05 | Opacity (Non-Transparency) | ISO 2471 | ≥ 93.0% | ≥ 94.0% | ≥ 95.0% (Zero Show-through) |
| 06 | Moisture Content | ISO 287 | 4.0 - 5.0% | 4.0 - 5.0% | 4.0 - 5.0% (Anti-Curling) |
| 07 | Bendtsen Roughness | ISO 8791-2 | ≤ 180 ml/min | ≤ 160 ml/min | ≤ 140 ml/min (Silky Surface) |
| 08 | Bending Stiffness (MD) | ISO 2493 | ≥ 110 mN | ≥ 120 mN | ≥ 135 mN (High Rigidity) |
| 09 | Surface pH (Permanent Life) | ISO 6588 | 7.5 - 9.0 | 7.5 - 9.0 | 7.5 - 9.0 (Acid-Free Archival) |
| 10 | Laser Heat Curl Tendency | ISO 11556 | < 8 mm | < 6 mm | < 5 mm (Post-Fuser Flat) |
Packaging Engineering & Stacking Integrity
Built to endure multi-week maritime transit, high-humidity sea crossings, and intensive container forklift handling.
- • 70 GSM Coated Kraft with inner PE extrusion film.
- • 100% Hermetically sealed against maritime moisture & mold.
- • Precision cut edges to eliminate sheet corner creasing.
- • Bursting Strength: ≥ 14.5 kgf/cm² (ISO 2759).
- • Edge Crush Test (ECT): ≥ 7.5 kN/m (ISO 3037).
- • Double-wall BC-Flute reinforced corrugated structure.
- • Vertical Stacking: Rated for up to 10 tiers of cartons.
- • ISPM 15 certified heat-treated solid wood / composite pallets.
- • Heavy-duty PE stretch wrap + corner angle edge protectors.
Full Container Load (FCL) Stowage: 20GP vs 40HQ
Optimized for maximum ocean freight payload, gross weight compliance, and port terminal handling.
| Stowage Parameter | 20GP Loose Loading (Max Freight Yield) | 20GP Palletized | 40HQ Loose Loading (High Cube) | 40HQ Palletized |
|---|---|---|---|---|
| Total Master Cartons | 1,600 Cartons | 1,560 Cartons | 2,050 Cartons | 1,950 Cartons |
| Total Paper Reams | 8,000 Reams | 7,800 Reams | 10,250 Reams | 9,750 Reams |
| Pallet Configuration | None (Floor Stowed) | 20 Pallets (78 ctn/plt) | None (Floor Stowed) | 25 Pallets (78 ctn/plt) |
| Net Weight (80 GSM basis) | ~ 19,950 kg (19.95 MT) | ~ 19,450 kg (19.45 MT) | ~ 25,560 kg (25.56 MT) | ~ 24,320 kg (24.32 MT) |
| Gross Weight (Incl. Cartons) | ~ 21,200 kg (21.2 MT) | ~ 21,050 kg (21.0 MT) | ~ 27,200 kg (27.2 MT) | ~ 26,450 kg (26.4 MT) |
| Transit Advantage | Lowest sea freight cost per ream | Fast forklift unloading (30 mins) | Max single shipment volume | Automated warehouse rack storage |
Printing Press & Digital Copier Compatibility
Tested across commercial multi-function copiers, high-speed digital printers, and offset presses.
Tested up to 135 ppm continuous high-speed feed without friction roller slippage.
Superior EA toner adhesion, deep black saturation, and zero curl after 200°C fuser passage.
Instant ink absorption with zero feathering or strike-through on double-sided duplex runs.
Low-dust precision slitting extends pickup roller operational lifespan and reduces maintenance.
Sub-millimeter front-to-back duplex registration, engineered for contracts, manuals, and booklets.
High surface picking resistance and uniform ink trapping for high-speed commercial litho runs.
OEM Private Label Packaging Solutions
Build your own branded copy paper line for local retail, commercial stationers, or government tenders. We offer full OEM wrapper printing, barcode localization, and branded master export cartons.
Launch Your Private Brand
Minimum OEM order is only 1 x 20GP container (8,000 reams). Cylinder engraving costs are credited upon contract fulfillment.
Inquire About Custom Production →Standard Export Documentation Checklist
Full sets of authenticated original shipping and customs documents supplied with every container dispatch.
Request an Official Container Proforma Quote
Specify your destination seaport, target volume, and commercial requirements for JK Paper Brand Overview – A4 Copy Paper Series. Guaranteed response within 24 hours.
Frequently Asked Questions for JK Paper Brand Overview – A4 Copy Paper Series Buyers
Can I mix different grammages (70gsm, 75gsm, 80gsm) in a single 20GP container?
Yes. We routinely produce mixed container loads. A standard 20GP container can be divided between 70gsm, 75gsm, and 80gsm reams, provided each selected specification meets minimum slitting batch runs (minimum 400 cartons per grammage).
How do you guarantee paper arrives completely dry after multi-week equatorial sea transit?
Every ream is protected by 70g PE-extrusion moisture barrier wrap; master cartons are 5-ply heavy-duty BC-flute kraft; container floors are lined with impermeable PE sheeting, and 4-6 units of 1.0kg Calcium Chloride dry bags are suspended inside container wall corrugations to eliminate condensation.
How can prospective buyers receive physical paper samples prior to issuing a commercial PO?
We provide complimentary A4 paper swatch packs (sample reams of 70/75/80gsm). Importers only provide their corporate DHL / FedEx / UPS account number for freight collection, or pay nominal air express shipping fees which are 100% credited back upon container order placement.
What are the accepted international payment terms?
Our standard commercial terms are 30% T/T deposit upon sales contract confirmation, with 70% balance payable against presentation of clean Ocean Bill of Lading (B/L) copy. For qualified government tenders or established corporate distributors, 100% Irrevocable Letter of Credit (L/C at sight) is accepted.