![]() All this does happen, because there is a time lapse before the moisture has penetrated evenly through the board. Now, if a binder applies a water-based adhesive onto one side of a paper-board, this will cause the fibres on the surface to expand rapidly. The expansion is across the machine direction. As each of the fibres expands in its diameter, expansion will occur. ![]() Given the opportunity, these will absorb water by capillary action and as a result, the individual fibres will considerably increase in their diameter, but gain only a fraction in the fibres lying in a more or less parallel direction. Paper and paperboards are all based on cellulose fibres, which have a tubular shape. Example, books made in Asia during the summer in high humidity, then transported to a bookstore in Minnesota, where, during the winter, the air is very dry. These factors greatly influence the performances of the finished products in the ever changing climatic environments. To understand these effects fully, it is essential to have a good understanding of the construction of the fibrous materials and how they react to moisture during the drying and manufacturing processes. on each other in the presence of water-based adhesives, that is animal or protein glues, cold-emulsion PVA's, starches etc. The most fundamental relationship in a print-finishing process does lie in the reaction of papers, boards etc. How moisture or an adhesive application affects papers and boards I have never come across a single warping incident where, at least in my opinion, where the paper boards were at fault. That maybe true, but despite those claims made by some paperboard manufacturers, this bookbinding expert has experienced and analyzed warping problems on all brands and qualities of paper boards made. Some structures promise to offer more stability than others. Most important for them is to manufacture a paperboard product that is dimensionally stable. There are many different techniques being used to manufacture paper boards. This is also true for the printed papers used as covering materials. Unfortunately, with today's trends toward recycling, we must cope with shorter fibres. Long fibred stocks are more stable in this respect and in certain instances, it is possible to exercise considerable control, a factor every mill tries to achieve in a best possible manner. In addition, papers and boards with short fibres tend to saturate more rapidly and therefore expand and contract more quickly. For example, a high amount of corrugated box content attracts more moisture, whereas groundwood or thermo-mechanical furnish, i.e. Some use newsprint, others magazine papers etc. We will build on process and technique as we go on this journey together….What are the basics of a paperboard? All paperboard manufacturers rely on paper-waste which, being a re-cycled product, is hard to control for consistency. I hear myself saying all the time….”I can’t believe I never thought of that before, duh”…… it is a wonderful thing to know you can always learn new things and that the simplest things are a joy to learn.Įpisode 1 is all about making a good warp….because that is where it all starts and if you can make an awesome warp you are well on the way to having a great experience at the loom. Marveling at some simple thing that I didn’t think about 10 years, 20 years, 30 years ago. I have been weaving now since 1978 and I am still tweaking my process, trying new things. There is not one way to do anything but there are easier or harder ways to achieve the same thing….I will always choose the easy way. I am sharing with you the 5 % ‘ers that have made my life so much easier as a weaver. In this series of videos my goal is to help you gain confidence and skill in the weaving process. There are many steps in both that are necessary to get to the end product. For me gardening is very much like weaving. If you paid attention to ‘this or that detail’ your garden would be 5% better and if you added up all those 5%’ers your garden and garden experience could be 100’s of percents better. ![]() Basically the author was talking about paying attention to little details in the process of growing an awesome garden. Years ago I read a gardening book that talked about the concept of 5 %’ers.
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