tissue parent reels

Tissue is made on the paper machine in tissue parent reels (large jumbo roll) which can weigh up to several tons. These are then transformed in the tissue converting process from very large reels (tissue parent reels) into finished products such as rolls of bathroom tissue or kitchen paper towels, as well as folded products like facial tissue, handkerchiefs and napkins. Advanced high-speed machines carry out the complex winding, cutting, slitting, printing and embossing steps while retaining the functional properties such as softness, strength and absorbency. Finally, these products are wrapped and packaged into the format needed for stocking in a supermarket or other distribution center before going to the final consumer. 
Definition of tissue parent reels 
1) tissue parent reels: A roll of tissue web material the outside diameter of which is larger than standard diameter. 
2) tissue parent reels: large roll of tissue paper, wound up on the reel winding station, covering the full width of the tissue paper machine. A parent roll may also be a finished product with a large diameter. 
3) tissue parent reels: The full-width roll of trimmed paper as it comes from the paper machine 
4) tissue parent reels: A large roll of paper that is over 2,5 (3,0) meters in diameter and is to be used in tissue converting operations 
"Behind the scenes" of the converting process: how a tissue paper machine works 
In the field of paper, and specifically in the converting process, many times we forget the procedure that lies behind the production of the tissue parent reels. 
We would like to discuss some of the "behind the scenes" processes that concern converting and that are more closely tied to those operators who work in the preparation phase of the tissue parent reels, necessary first step in the converting process. It is a section that is reserved for "authorized personnel only" and is intended to serve as a support article, to satisfy the technical curiosities of those who work in this realm. And - given its simplicity of explanations - can also serve as an introductory article supplying basic information to all those neophytes among us. What is a paper machine? 
In the global process of converting raw materials into finished product, paper machines represent the main instrument through which the tissue parent reels is obtained. The manufacturing process of the tissue parent reels can be simple from the descriptive point of view, but the complexity of the number of phases that comprise the process itself, the systems - specific for each phase - make its actual production a rather complex operation. Many problems can arise due to the numerous variables that come into play, such as the use of chemical products, the wear of the devices and equipment, percentage of humidity, high operation speeds, etc. 
These potential problems substantially complicate the production phase. So even though we can say that the process of converting fibrous substances into finished product is rather simple to understand, it is, instead, complicated to carry out. The Big Bang of the paper making phase is given by the breaking up of cellulose - or recycled fibres in water. These are the indispensable raw materials for the start of the process and this phase is carried out in the pulper, a machine whose function it is to break down these fibres. The sheet of paper produced is then dried in the Yankee dryer. The fibrous mixture obtained from the crushing of cellulose through the addition of water - fundamental element of the process - is distributed onto a wire and is then transported to be dried. The water contained in the mixture, bonding element and means of transport of the cellulose pulp, will have to be subsequently removed. It is at this phase of the production process that the paper machine plays a determining role. The PM allows the continuous formation and detachment of the sheet of paper. One, continuous phase where the raw material is crushed, distributed uniformly on a wire and the sheet of paper is dried. For this reason, it contains many devices (headboxes, vacuum presses and Yankee dryer, etc.) that remove half of the water concentration contained in the pulp. The Yankee dryer, a large cylinder heated by vapour and aided in its activity by vacuum hoods, heats the sheet, thus terminating the drying phase through the total elimination of the residual water concentration. The sheet thus obtained is wound on a large cardboard core to become a tissue parent reels. Here is where the work of the paper machines end and the converting machines come into play. 

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