Once the various constituent parts of the container are cut, two parts are joined as in figure 1 , on the pattern designing table, by means of a 5-thread seam, additional parts being successively joined in this way on the sides thereof, until four parts are assembled, forming a cylinder or a trunk of a truncated pyramid. A square is then joined as in fig. 2 by means of a 5-thread seam in the lower part of fig. 3 and fig. 4 , or the smallest square detached from the trunk of the truncated pyramid produced. Finally, a container is produced, joining four isosceles trapeziums on the sides thereof and a square in the lower part, thereby joining all of the parts on one of the ends thereof fig. 4 . All of the seams are then reinforced by means of thermosealing (according to the model), using a conventional thermosealing machine at 220°-240° in order to melt the felt. A 1 cm hem is made by means of a linear seam, adding the tag of the product into said seam fig. 7 . The containers of more than 15 litres comprise a reinforcement in the upper part thereof fig. 5 , acting as handles. Inside the container is a piece of felt as in fig. 6 . Depending on requirements, the product can also be made with a 5-thread overlocking machine.
