· Forming Stage
· Dehydration and Forming: In the production of paper and corrugated board, polyester spiral meshes are used. After the pulp is diluted and mixed, it is conveyed and dehydrated through the polyester mesh belt. The polyester mesh belt can effectively retain the wood fibers, enabling the pulp to form a paper sheet. For example, 4 - layer single - mesh is suitable for cultural, printing, and packaging papers; 8 - layer single - mesh is suitable for the production of high - grammage corrugated paper and packaging paper.
· Selection Criteria: Coarse - mesh polyester mesh belts are usually used for the production of heavy - duty paper and corrugated cardboard boxes, while fine - mesh polyester mesh belts are used for the production of lightweight writing and printing papers.
· Conveying Stage
· Conveying in the Hot - plate Section: In the hot - plate section of the corrugated board production line, a needled belt containing polyester fibers is used as the conveyor belt. The polyester fiber layer in the needled belt gives it good elasticity, toughness, and wear - resistance. It can evenly distribute the pressure of the gravity rollers on the cardboard, carry the cardboard smoothly, and will not leave indentations on the cardboard.
· Conveying in the Cooling Section: In the cooling section, a polyester needled belt can also be used. Its good air - permeability allows the moisture contained in the corrugated board to be dissipated through the conveyor belt during the cooling process, ensuring that the moisture content of the cardboard meets the national standards and improving the bonding strength of the cardboard.
Paper Forming Processing
· Filtration and Screening
· Pulp Screening: During the pulp preparation process, a sieve made of stainless - steel wire mesh is used to screen the pulp, which can remove impurities, fiber bundles, etc. in the pulp, ensuring the quality of the pulp and laying a foundation for the subsequent production of high - quality paper and corrugated board.
· White - water Filtration: In the white - water recycling system during the papermaking process, stainless - steel wire mesh is used to filter fine fibers, fillers, and other impurities in the white - water, realizing the recycling of white - water, improving the utilization rate of water resources, reducing production costs, and at the same time reducing environmental pollution.
· Special Applications
· Making Special Packaging: The stainless - steel wire mesh can be processed into specific shapes and structures and used to make special - function packaging. For example, it can be used to package some products that require air - permeability, moisture - proofing, or have certain strength and protection performance. When used in combination with corrugated board, it can enhance the overall performance of the packaging.
· Auxiliary Processing: In some deep - processing processes of corrugated board, such as die - cutting and scoring, the stainless - steel wire mesh can be used as an auxiliary tool to fix or support the cardboard, ensuring the accuracy and stability of the processing process.
Paper Forming Processing
