Hey there! I'm a supplier of tissue machines, and today I'm super excited to take you on a journey into how these amazing machines work. Tissue machines are the unsung heroes behind the soft, absorbent tissues we use every day, from toilet paper to paper towels. So, let's dive right in!
The Basics of a Tissue Machine
Before we get into the nitty - gritty, let's understand what a tissue machine is. It's a large - scale industrial device designed to turn pulp into finished tissue products. There are different types of tissue machines, like the Napkin Tissue Paper Machine, Hand Towel Tissue Machine, and Jumbo Roll Tissue Machine. Each type is tailored to produce specific tissue items, but they all share some common working principles.
Pulp Preparation
The whole process starts with pulp. Pulp is made from wood fibers, recycled paper, or a combination of both. First, the raw materials are chopped into small pieces and then mixed with water to form a slurry. This slurry goes through a series of cleaning and refining steps.
In the cleaning stage, unwanted materials like dirt, bark, and metal particles are removed. This is crucial because any impurities can affect the quality of the final tissue product. After cleaning, the pulp is refined. Refining is like giving the pulp a workout - it breaks down the fibers and makes them more flexible and better at bonding together.
Forming the Web
Once the pulp is ready, it's time to form the tissue web. The pulp slurry is pumped onto a moving wire mesh called the forming fabric. As the fabric moves, water drains through the mesh, and the fibers start to bond together, gradually forming a thin layer of tissue.
This process is carefully controlled to ensure an even distribution of fibers. The speed of the fabric, the consistency of the pulp, and the amount of water being drained all play important roles. If the fibers aren't evenly distributed, the tissue might have weak spots or uneven thickness.
Pressing
After the web is formed, it still contains a lot of water. The next step is pressing. The tissue web passes through a series of press rolls. These rolls squeeze out as much water as possible from the tissue.
Pressing not only removes water but also compacts the fibers, making the tissue stronger. The pressure applied by the rolls is carefully adjusted. Too much pressure can damage the tissue, while too little won't remove enough water.
Drying
Even after pressing, the tissue still has some moisture left. That's where drying comes in. There are different methods of drying, but the most common one is using steam - heated cylinders called Yankee dryers.
The tissue web is wrapped around the Yankee dryer. As the dryer rotates, the steam inside heats up the surface, and the heat evaporates the remaining water from the tissue. The high temperature also helps to further bond the fibers, giving the tissue its final strength and texture.
Creping
Creping is what gives tissue its softness and absorbency. After drying, the tissue web passes over a blade called a creping doctor. The blade scrapes the tissue off the Yankee dryer, creating small wrinkles or crepes.
These crepes make the tissue more flexible and increase its surface area. A larger surface area means the tissue can absorb more liquid. The angle and pressure of the creping doctor are adjusted to control the amount and size of the crepes, which in turn affects the softness and absorbency of the tissue.
Reeling and Converting
Once the tissue is creped, it's wound onto large rolls called jumbo rolls. These jumbo rolls are then sent to the converting section. In the converting section, the jumbo rolls are cut, folded, and packaged into the final products we see on store shelves.
For example, if it's a napkin tissue, the jumbo roll will be cut into the right size, folded into the desired shape, and then packaged in boxes. If it's a hand towel, it might be cut into individual sheets and rolled onto smaller dispensers.
Quality Control
Throughout the entire process, quality control is of utmost importance. Samples are taken at different stages to check for things like thickness, strength, absorbency, and softness. If any of these quality parameters don't meet the standards, adjustments are made to the machine settings.
Modern tissue machines are equipped with advanced sensors and control systems. These systems can detect even the slightest changes in the process and make real - time adjustments to ensure consistent quality.
Maintenance and Upkeep
A tissue machine is a complex piece of equipment, and regular maintenance is essential. The machine needs to be cleaned regularly to prevent the buildup of pulp and other debris. The rolls, belts, and other moving parts need to be lubricated to reduce friction and wear.
The electrical and control systems also need to be checked and calibrated. Any malfunction in these systems can lead to production issues or even damage to the machine.
Why Our Tissue Machines are Great
As a tissue machine supplier, I can tell you that our machines are top - notch. We use the latest technology in pulp preparation, web forming, and drying. Our machines are designed to be energy - efficient, which can save you a lot of money in the long run.
We also offer excellent after - sales service. Our team of experts is always ready to help you with installation, maintenance, and any technical issues you might face. Whether you're looking for a Napkin Tissue Paper Machine, Hand Towel Tissue Machine, or Jumbo Roll Tissue Machine, we've got you covered.
Let's Connect
If you're in the market for a tissue machine, or if you just have some questions about how they work, don't hesitate to reach out. We're here to answer all your queries and help you find the perfect machine for your needs. Whether you're starting a new tissue production business or looking to upgrade your existing equipment, we can work together to make it happen.
References
- "Tissue Paper Technology" by James C. Roberts
- "The Paper Industry Handbook" by George A. Smook
- Industry reports from leading tissue machine manufacturers