Inclined Screen Former And Special Paper

The prototype of the inclined screen former first appeared in the 1840s and was designed for the production of cardboard. But for a long time after its invention, almost no one cared about it.

Cardboard is required to slitting rewinder machine or sheeter machine after the cent cut to enter the market.

The Japanese use long-fiber Manila hemp pulp to make high-quality Japanese paper. In order to solve the difficulty of making long fibers with ordinary fourdrinier or circular mesh, they chose a similar inclined mesh former and achieved success.Although this inclined mesh former was not perfect at that time. However, because it can greatly reduce the concentration of the online slurry to 0.02~0.05% or even lower, it solves the problem of uniform suspension of long fibers and prevents fiber flocculation, thereby ensuring the evenness of the paper sheet and improving the dehydration efficiency.

Therefore, people gradually realized that the oblique wire former is superior to the Fourdrinier wire or the rotary wire when making long-fiber raw paper.

The American Dexter Company improved and perfected the inclined screen former in the 1950s and successfully used it to produce tea filter paper, wax paper base paper, casing paper base paper and other paper types. This has allowed roll to slitter rewinder machine and roll to Sheets customize size cutting slitting machine to also have a bit of development.

The situation of domestically introduced inclined wire paper machines: foreign inclined wire papermaking technology is mature and the equipment is advanced. At present, VOITH's full-flow inclined mesh former is the most advanced inclined mesh former in the world.

In addition to the inclined mesh formers introduced earlier by Sichuan Jinfeng and Hangzhou Xinhua. In 2005, Zhejiang Minfeng Paper introduced VOITH's three-layer floating sheet inclined mesh paper machine and put it into production.In the same year, Mudanjiang Hengfeng Paper also introduced a single-layer skew mesh paper machine from VOITH to produce high-transparency paper. In addition, Hangzhou Papermaking Research Institute also introduced a single-layer inclined wire former from VOITH for production and experiments.

The development of domestic oblique wire paper machines: Before 2005, China had not really mastered the oblique wire papermaking technology, especially in the design and manufacturing of oblique wire formers. Machinery factories did not make in-depth research on the equipment, and they were out of touch with the equipment users. , just take it for granted, and paper mills cannot get good equipment, which leads to the current domestic inclined wire papermaking equipment and technology being very backward.

In China, there are quite a few problems in the design and automatic control of the short flow process in front of the network, especially the adjustment of the pulp to network speed ratio, the control of the dehydration speed, the control of the vacuum system, etc.

After Binzhou Fuerte 3# inclined wire paper machine began to learn from and absorb foreign advanced technology, it chose a domestic inclined wire paper machine manufacturer to manufacture the first regular inclined wire former in China to produce automotive filter paper.

Shandong Qifeng Paper Group has installed a new inclined screen paper machine for the production of wear-resistant paper. It is worth mentioning that at the same time, the automatic control level of the above two manufacturers has also been greatly improved. In particular, the DCS, QCS and MCC of Binzhou Fuerte are operating very normally, which plays a key role in improving and stabilizing product quality. In the following years, domestic equipment manufacturers have also continued to accumulate experience, and their equipment has become increasingly mature.

At the same time, Roll Cutting Slitting Machine also has a lot of demand and development.

With the development and needs of science and technology, there are more and more types and varieties of special paper, which puts forward special requirements for the performance of paper. Such as: oil-proof, fire-proof, waterproof, acid and alkali resistance, light resistance and other properties. Such pure plant fibers can no longer meet the needs of modern industry for special paper. As a result, some non-plant fibers have also become raw materials for special paper. Such as: inorganic fibers, synthetic fibers, metal fibers, etc.

With the development of special paper, the downstream machines of the inclined wire former: paper slitter rewinding machine, paper roll to sheets sheeting machine, A4 paper cutting machine, etc., which slit and rewind special paper, or cut special paper into customized sheets. These machines are also being improved and perfected. Chinese machinery makers are trying to improve efficiency and precision.

Most specialty papers are made from long-fiber raw materials, including synthetic fibers, inorganic fibers such as glass fibers, and other special fibers such as aramid paper.

The inclined wire former can be well adapted to making paper from long fiber pulp such as softwood pulp alone or mixed with a certain amount of industrial fibers.

Therefore, in modern papermaking, inclined screen paper machines have achieved a special status and are widely used in the production of special papers. This has also promoted the continuous transformation and improvement of the inclined mesh former and slitting cutting machine.