make a zipper harder to pull

[Treesner]

hey guys I have some bags with zippers that unzip themselves I'm trying to figure out if theres a way to make them a bit stiffer? 

everything I research just tells me how to make a stiff zipper easier to pull, I need the opposite!

[nylonRigging]

don't know what/which zippers you using, coil, metal tooth ? .. they make Locking sliders .

.

[johnv474]

You may be able to use pliers to squeeze both sides of the zipper slider so it grips the zipper chain better.

It sounds like you need locking sliders (the tabs just flip forward and back; they don't dangle freely).  Locking sliders are used especially on vertical zippers, e.g. on a jacket, so they don't open on their own.

[Treesner]

On 4/19/2020 at 4:29 PM, johnv474 said:

You may be able to use pliers to squeeze both sides of the zipper slider so it grips the zipper chain better.

It sounds like you need locking sliders (the tabs just flip forward and back; they don't dangle freely).  Locking sliders are used especially on vertical zippers, e.g. on a jacket, so they don't open on their own.

thanks I was able o use pliers to squeeze to my desired tension