300 gsm white board printed cardboard envelope

  • With easy open strip.

  • 350 gsm white board.

  • Production capacity 70,000,000 pcs per month.

  • 7 days for sample production.

  • 15-20 days for mass production.

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Test Report

No.

Test Items

Unit

Standard Requirement

Test Results

Single Evaluation

1

Unit weight

g/

300(+5%,-3%)

300.3

Qualified

2

Moisture content

%

8.0±1.5

7.01

Qualified

3

Stiffness (horizontal)

mN·m

≥3.4

3.6

Qualified

4

Breaking index

kpa·/g

≥1.8

1.91

Qualified

5

Tightness

g/cm³

≤0.87

0.83

Qualified

6

 Ink adhesion

times

10N weights move back and forth in 20 times without fading

Without fading

Qualified

7

 Coefficient of static friction

/

≥0.3

0.329

Qualified

8

Coefficient of dynamic friction

/

≥0.24

0.258

Qualified

Product Description

Material

200-450 gsm grey board,white board or coated board.

Size

Customized sizes are available.

Color

Up to 8 colors

Surface Finish

Gloss/matt varnishing or other surface finish.

Special Element

Spray barcodes,numbers,labeling stickers,back pouch,double tapes,with windows etc.

Application

Used for express mail service, E- commerce or logistic transport etc.

Packaging

Pack into export carton or based on customer's requirements.

Quality Assurance

IS09001,ISO14001,FSC etc.

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