#400gsm

OEKO-TEX Certified Streetwear Manufacturer: Trusted Essential 400gsm 2026 Working with an oeko-tex certified streetwear manufacturer is no longer optional for independent labels shipping into the US, EU, or Japanese retail channels. Whole Foods clones them in wellness fashion, Selfridges enforces them at buyer intake, and Zozotown Japan strips listings that cannot show a valid Standard 100…

400gsm White Cardboard – the ideal choice for a wide range of projects requiring a strong, reliable and aesthetically pleasing material. This heavyweight material is ideal for creating high-quality and durable prints, displays, packaging and signage. Its strong construction and superior stiffness are perfect for creating a professional end product, whilst its smooth white coating gives it a contemporary and stylish finish. Its versatility also makes it a great choice for crafts, card-making and other creative projects. With its bright white color, 400gsm white cardboard custom is sure to make your project stand out from the crowd.

Parameters of 400gsm White Cardboard

400gsm White Cardboard Descriptions

Physical properties

Unit

Tolerance

400

Grammage

g/m2

400

-0.333333333

Thickness

μm

540±15

Stiffness（CD）  ≥

mN.m

5.5

Surface water absorption（Cobb60）≤

Positive

g/m2

30

Back

38

Brightness(ISO)

%

Positive：  92.0±2.0,   Back:   87.0±2.0

Roughness（pps）

μm

≤1.0

Lustrousness(750)  ≥

%

50

Folding resistance ≥

20 times

Dirt count

pcs/m2

0.2-1.0mm2≤20 pcs,≥1.0mm2 None

Moisture

%

6月8日

Surface strength   ≥   (IGT)

m/s

TD≥1.5  CD≥1.2

Feature of 400gsm White Cardboard

400gsm White Cardboard is a sort of heavy-duty cardboard, made of 400gsm paper and is known for its exceptional rigidity and solidity.  Its superior thickness and strength make it a great choice for any project in which you need a reliable and strong material.