Toilet Paper Machine

Toilet paper machine mainly consists of raw materials to semi-finished products, and the post-processing equipments mainly consist of semi-finished products to finished products.

Working principle of toilet paper machine

Toilet paper machine is a machine for making the pulp water suspension which meets the paper making requirements into paper by a process flow of dewatering and forming by screen, dewatering and drying mechanical pressing. Toilet paper machine includes three main parts: forming, pressing and drying of the above process, and it is equipped with necessary trimming device, rolling device and transmission device, as well as auxiliary systems used for pulp supply, pulp and white water circulation, vacuum, ventilation, and broken paper handling and lubrication, self-control, etc. The specifications of toilet paper machine are often confirmed in terms of the width of the paper formed (referred to as production width), the width of copper mesh and the preferred working speed. The modern large-scale paper machine has reached up to 11m in production width, more than 1000m/min in working speed, and several hundred tons in daily output. The weight of the whole machine is more than 1000tons and 100m. In common developing countries and the productions of some specialty papers, small toilet paper machine is used, which has a width of 1-3m and a working speed of 10-200m/min.

Working flow of toilet paper machine

According to the requirements of the paper making process, toilet paper machine has various structural forms, and consists of the components such as feeding, forming, pressing, drying, trimming, rolling and transmission and auxiliary equipments.

The post-processing equipments of toilet paper machine can be divided into the roll type paper processing equipments and the square type paper processing equipments.

Roll type toilet paper processing equipment

Roll type toilet paper processing equipment mainly includes a rewinding machine, band saw paper cutter, sealing machine, which is used for 1-3 layers of rewinding and small-roll cutting and packaging into finished products.

Square type toilet paper processing equipment

Square type toilet paper processing equipment mainly includes the net cage rewinding machine, the paper cutting saw with plate and band saw paper cutter, which is mainly used for rewinding square paper, cutting into the strips and then re-cutting into squares.

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Pulp (paper)

Pulp is a lignocellulosic fibrous material prepared by chemically or mechanically separating cellulose fibres from wood, fiber crops, waste paper, or rags. Many kinds of paper are made from wood with nothing else mixed into them. This includes newspapers, magazines and even toilet paper. Pulp is one of the most abundant raw materials.

Pulp Mill

A pulp mill is a manufacturing facility that converts wood chips or other plant fibre source into a thick fibre board which can be shipped to a paper mill for further processing. Pulp can be manufactured using mechanical, semi-chemical or fully chemical methods (kraft and sulfite processes). The finished product may be either bleached or non-bleached, depending on the customer requirements.

Paper Machine

A paper machine (or paper-making machine) is an industrial machine which is used in the pulp and paper industry to create paper in large quantities at high speed. Modern paper-making machines are based on the principles of the Fourdrinier Machine, which uses a moving woven mesh to create a continuous paper web by filtering out the fibres held in a paper stock and producing a continuously moving wet mat of fibre. This is dried in the machine to produce a strong paper web.

Bleaching

The pulp produced up to this point in the process can be bleached to produce a white paper product. The chemicals used to bleach pulp have been a source of environmental concern, and recently the pulp industry has been using alternatives to chlorine, such as chlorine dioxide, oxygen, ozone and hydrogen peroxide.

Chemical Pulp

Chemical pulp is produced by combining wood chips and chemicals in large vessels called digesters. There, heat and chemicals break down lignin, which binds cellulose fibres together, without seriously degrading the cellulose fibres. Chemical pulp is used for materials that need to be stronger or combined with mechanical pulps to give a product different characteristics. The kraft process is the dominant chemical pulping method, with the sulfite process second. Historically soda pulping was the first successful chemical pulping method.