What to do if zipper on the backpack diverges?

A backpack is an indispensable accessory that is used by almost all schoolchildren and students. They unzip and unzip it several times a day, sometimes hastily, inaccurately, making much more effort than necessary. This often leads to deformation and breakdown of the mechanism: the tongue comes off, the dog jumps off, the links of the castle diverge. How to fix a lightning if it is dispersed?

Why does the dog “fly”?

This can happen for the following reasons:

  • from repeated and abrupt movements, the runner “breaks up, ” its runners, inside of which the teeth pass, move apart. In this case, more often one part of the runner flies, and the second remains on the lightning;
  • there are no stops at the ends of the backpack closure. Even strong threads are wiped over time (low-quality - just tear) and the seam diverges. The edge of the tape is released, and the slider jumps off completely.

If the lightning itself is not damaged, you can put the carriage in place and tighten it.

What to do so that the lightning does not diverge?

The lock opens if the outer and inner parts of the dog are not tight enough to each other. In order for the slider to well grasp the edges and fix the connection of the teeth, it is necessary to gently squeeze its side parts . This can be done with the help of pliers, acting first on one side, and then on the other. But in this case it cannot be guaranteed that both of them will be compressed in the same way, since it is practically impossible to accurately calculate the force of impact. As a result, it may turn out that, on the one hand, the girth of the links will be too tight, and on the other hand, it will be insufficient . The procedure will have to be repeated, but this is undesirable. Therefore, it is better to use a different method:

  • put the zipper on the corner of a sturdy table or stool with the open side away from you. You can put down a wooden block;
  • with pliers to capture the protruding part of the runner, to which the keychain is attached parallel to the surface;
  • hit the pliers with a hammer over the place of pressing. The freer the move, the stronger the blow should be (within reasonable limits).

Using this simple procedure, both edges are pressed simultaneously and evenly.

Important! Before proceeding with fastening, it is advisable to unfasten the lock. If it was not possible to fully open, connect and fasten the remaining teeth with a hard metal object (scissors, screwdriver).

Minor repairs, as a rule, save for a short time. Soon the carriage becomes unusable and you have to change it to a new one.

How to replace the slider, if necessary?

To do this, you should:

  1. pick up a new slider. His number, knocked out on the inside, must match the "native". If the figure is missing, you have to compare visually;
  2. open the junction of the zipper with the canvas of the backpack at the beginning of the fastener;
  3. lubricate the lock links with paraffin or dry soap and remove the broken slider;
  4. put a new dog on the teeth (if necessary - squeeze a little at the base with a screwdriver);
  5. check by fastening and unbuttoning several times. If necessary, tighten the carriage;
  6. fasten the end of the zipper with several stitches, creating a stop so that the slider does not fly out;
  7. sew the braid into the fabric of the backpack manually or using a sewing machine, depending on the thickness of the material. In the place of the stitch, the teeth should fit perfectly together. The threads must be selected strong, matching the color of the rest of the stitching.

If there is a little trouble with lightning on your favorite backpack, try to fix it yourself. A more serious problem - for example, broken links - will have to be solved by replacing the entire lock . You can do this at home or by entrusting the work to a specialist.