The early paper-making blanket loom was refitted from an ordinary wool loom. This kind of extra heavy loom was first manufactured in Germany in the 1930s. China designed and made it by itself in the 1950s. With the increase of the width of the paper machine, the 33 meter ultra wide paper blanket loom appeared in the Federal Republic of Germany and other countries in the 1970s, which can weave 66 meter ring fabrics and then cut them into different widths.
There are two kinds of paper blanket looms: sheet weaving and ring weaving: ① sheet weaving: first weaving in flat width, and then inlaying into ring fabric by hand. Sheet weaving is suitable for blankets with low warp density, high weft density and long length. When weaving a fabric 2 ~ 3 times wider than the machine, the folding method is generally used on the machine, and it is inserted into a ring after being unfolded off the machine. ② Ring weaving: it is directly woven into a ring fabric with a dobby mechanism. It is the weft yarn of the blanket in the longitudinal direction and the warp yarn in the transverse direction on the loom. After getting off the loom, the fabric can be cut into various circular papermaking blankets according to the required width.
The paper blanket loom uses a cam or spring to throw the shuttle, and adopts an elliptical gear transmission mechanism. The shuttle has enough time to pass through the shuttle way to meet the requirements of width. Looms often use single or multi spindle negative let off, and separate cloth reeling mechanisms are used to reel long fabrics. The loom is equipped with a yarn tension control mechanism or an internal edge support to maintain the same warp and weft yarn density at the ring edge during multi-layer weaving. Modern heavy-duty wide width papermaking blanket loom adopts new technologies such as hydraulic pneumatic and electronic, and is equipped with double-sided synchronous drive lifting reed device, which can weave polyester monofilament papermaking forming mesh and drying mesh and other fabrics.
