Brown Kraft Paper/ White Kraft Paper
Kraft paper is a tough, water-resistant packaging paper with a brownish-yellow color and a wide range of uses. It is often used to make paper bags, envelopes, workbooks, record sleeves, files and sandpaper. The basis weight range is from 80 g/m² to 120 g/m². There are differences between web and flat paper, single-sided light, double-sided light, and stripe. The main quality requirements are flexibility and strength, high burst resistance, and ability to withstand greater tension and pressure without breaking. Kraft paper has a high tensile strength, such as single gloss, double gloss, stripes, and no grains. Mainly used for packaging paper, envelopes, paper bags, etc. and printing press drum linings, etc.
Kraft paper usually maintains its yellowish-brown color and is suitable for bags and wrapping paper. Depending on the nature and use, kraft paper has various uses. Kraft paper is a collective name for a kind of paper, and there is no certain specification, and it is generally classified according to its nature and use.
Colors: primary color kraft paper, red kraft paper, white kraft paper, flat kraft paper, single-gloss kraft paper, two-color kraft paper, etc.
Uses:packaging kraft paper, waterproof kraft paper, moisture-proof kraft paper, anti-rust kraft paper, pattern-making kraft paper, process kraft paper, insulation kraft paper, kraft stickers, etc.
Materials: recycled kraft paper, kraft core paper, kraft base paper, rough kraft paper, kraft wax paper, wood pulp kraft paper, composite kraft paper, etc.
Kraft paper is used in various industries such as chemicals and machinery, especially in the food packaging industry.
Kraft paper use: Kraft paper is widely used in various packaging products, paper bags, handbag kraft paper, color boxes, gift box kraft paper, printing kraft paper, notebook kraft paper, workbook kraft paper, and special kraft paper for envelopes.
Food packaging must follow the principles of convenience and portability. The tensile strength of kraft paper makes it very suitable for packaging needs. In order to prevent the bag from being pulled off when consumers carry out food, the packaging material is required to have good tensile strength. Beverage packaging requires a certain degree of resistance to moisture and non-deformation of the materials to prevent deformation and damage due to water absorption.
For the packaging of frozen food, the use of high-strength materials as packaging is also the key consideration. This material must be able to withstand the thermal expansion and contraction during low-temperature freezing and high-temperature melting, and prevent deformation, distortion, wrinkling, and excessive moisture absorption. The condition of the food. From these aspects, the original color kraft paper is even more suitable than SBS paper.
Storage and use environment:
Products should be packaged and stored in a cool and dry environment, away from sunlight, freezing and high temperatures.
The storage environment is 20℃~30℃, and avoid placing it in a place with high temperature.
The surface to be adhered should be clean, dry, and free of grease or other pollution.
Service Life: 2Years.
Physical Properties |
Unit |
Weight |
GSM |
126g |
150g |
160g |
175g |
200g |
230g |
250g |
300g |
337g |
440g |
GSM |
g/㎡ |
Target |
126±5 |
150±6 |
160±6 |
175±6 |
200±7 |
230±7 |
250±8 |
300±10 |
337±12 |
440±15 |
Density |
g/c㎡ |
Min. |
0.7 |
0.7 |
0.7 |
0.7 |
0.7 |
0.7 |
0.7 |
0.7 |
0.7 |
0.7 |
Bursting Index
(Strength) |
kpa.m2/g |
Min. |
4 |
3.9 |
3.8 |
3.8 |
3.8 |
3.8 |
3.8 |
3.3 |
3.2 |
2.9 |
5.14 |
5.97 |
6.2 |
6.78 |
7.75 |
8.92 |
9.69 |
10.09 |
11 |
13.01 |
RCT |
N.m/g |
Min. |
9 |
9.5 |
10 |
10.5 |
11 |
11 |
11.5 |
11 |
11.5 |
12 |
17.58 |
22.09 |
24.81 |
28.49 |
34.11 |
39.22 |
44.57 |
51.16 |
60.09 |
61.85 |
COBB(Top/Back) |
g/㎡ |
Max. |
40/50 |
40/50 |
40/50 |
40/50 |
40/50 |
40/50 |
40/50 |
40/50 |
40/50 |
40/50 |
Folding Endurance |
Time |
Min. |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
Smoothness |
s |
Min. |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
7 |
5 |
4 |
Internal Bond |
g/㎡ |
Min. |
160 |
160 |
160 |
160 |
160 |
160 |
160 |
170 |
170 |
170 |
Moisture |
% |
Target |
8±2 |
8±2 |
8±2 |
8±2 |
8±2 |
8±2 |
8±2 |
8±2 |
8±2 |
8±2 |
Food grade Kraft Paper:30g,40g,50g,60g,70g,80g,
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