What could be better than swapping our plastic bags for these small reusable bags which are also easy to maintain.
You will need food pulp and a closure.
For dimensions, you can have fun with different sizes according to your needs. In the example I am giving you below, it is for a sandwich format. I made a 25 cm X 38 cm rectangle in food pul made from cotton jersey and used a 20 cm zipper .
First step, fitting the zipper: right sides together, I place the zipper on the edge of my rectangle, I place my needle as far to the left as possible (or I use a zipper foot) and sew close to it. I do the same on the other side. (fig.1)
Then, I topstitch on the right side of the clasp on both sides for a nicer finish. (fig. 2)
Second , I come to close both sides, wrong side against wrong side, in a straight stitch. ATTENTION: do not forget to open your zipper flash otherwise you will have difficulty turning it over. (fig.3)
Third , we make corners. Place the seam allowance opposite the zipper and make a small 1 '' wide (2.5cm) seam. We do the same thing in each corner.