Specification :

Here's an overview of the typical manufacturing process:

Pulping: The process begins with pulping, where wood chips or recycled paper are broken down into fibers. This can be done through mechanical or chemical pulping methods. In mechanical pulping, the wood chips are mechanically ground and refined to separate the fibers. Chemical pulping involves treating the wood chips with chemicals such as sodium hydroxide and sodium sulfide to dissolve the lignin and separate the fibers.

Bleaching (optional): Depending on the desired color and properties of the final Kraft paper, the pulp may undergo a bleaching process to remove any residual lignin and other impurities. This step is optional and is typically done for applications that require a lighter or whiter paper color.

Papermaking: The pulp is then diluted with water to form a slurry, which is fed onto a paper machine. The paper machine consists of a series of screens, rollers, and drying cylinders that help to remove excess water and form the pulp into a continuous sheet of paper. During this process, the fibers align and bond together, forming the basis of the Kraft paper.

Kraft Process: Kraft paper is named after the "Kraft process," a chemical pulping method developed in the 19th century. In this process, the pulp is cooked in a solution of sodium hydroxide and sodium sulfide under high pressure and temperature. This breaks down the lignin in the wood fibers, resulting in stronger, more durable paper with a characteristic brown color.

Rolling and Cutting: Once the paper sheet has been formed and dried, it is rolled onto large spools to create Kraft paper rolls. These rolls can vary in width, diameter, and length depending on the specific requirements of the packaging application. After rolling, the Kraft paper may undergo additional processing steps such as calendaring (smoothing) or coating (for enhanced properties).

Quality Control: Throughout the manufacturing process, quality control measures are implemented to ensure that the Kraft paper meets the desired specifications for strength, thickness, color, and other properties. Samples of the paper are tested for tensile strength, tear resistance, porosity, and other factors to ensure consistent quality.

Packaging and Distribution: Once the Kraft paper rolls have been manufactured and passed quality control checks, they are packaged and prepared for distribution to customers. The rolls may be wrapped in protective materials and stored in warehouses before being shipped to packaging converters, converters, or end-users for further processing and use.

FAQ :

1. who are we?

We are factory,based in Guangzhou, China.

2. how can we guarantee quality?

Always a pre-production sample before mass production;

Always final Inspection before shipment;

3. why should you buy from us not from other suppliers?

Most of our products are ready to ship,all the products can be customized according to your demands. We supply best service, high quality,far-ranging,specific products. We can gather all different products for you to save your freight or custom fee.

4. what services can we provide?

Accepted Delivery Terms: FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express Delivery,DAF,DES；

Accepted Payment Currency:USD,CNY;

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