Page Contents
Quick Answer
Putting a zipper back on track on a backpack can be tricky but is doable with some patience and the right techniques. The key steps are:
- Examine the zipper teeth to see where it came off track and locate the slider box.
- Use pliers or tweezers to straighten any bent or misaligned zipper teeth.
- Insert the edge of the zipper tape back into the slider box groove.
- Apply gentle pressure to keep the zipper engaged in the track while slowly pulling the slider along to close the zipper.
- Secure any loose zipper stops at the top and bottom.
- Test the zipper several times to ensure it glides smoothly along the track.
Having the right tools like pliers, tweezers, zipper lubricant, and replacement stops can help get your zipper working again. With some care and effort, you can often fix a separated backpack zipper at home. Professional repair may be needed for complex zipper issues or damage.
Examining the Zipper
The first step when trying to get a zipper back on track is to carefully examine where it is coming apart. Lay the backpack flat and see where the zipper teeth are no longer meshing together properly. This is likely where the zipper has come out of the slider box groove. Look to see if any teeth are bent, broken or misaligned. Also check if the slider box itself is damaged or derailed.
Locate the bottom stop of the zipper, which prevents the slider from sliding off the tape ends. On backpacks, the stops are typically sewn directly onto the fabric rather than hanging off the zipper tape. Make sure the stop is still securely in place. Examine the whole length of the zipper to see where issues are occurring and how extensive the damage may be.
Tools for Examining and Repairing Zippers
Having some specialized tools can make examining and fixing zippers much easier:
- Zipper pliers or tweezers – Allows gripping and maneuvering individual zipper components
- Magnifying glass – Lets you closely inspect zipper teeth and identify problems
- Seam ripper – Useful for removing old stops or stitches to access zipper
- Zipper lubricant – Reduces friction and helps zipper glide more smoothly
- Replacement zipper stops – Can replace any stops that are damaged or missing
Investing in a basic zipper repair kit can provide all the tools you need for basic zipper maintenance and repairs.
Fixing Misaligned or Bent Zipper Teeth
If the zipper teeth are no longer aligning properly, the solution is to straighten them back into position. Use zipper pliers or tweezers to gently grip any visibly bent or misaligned teeth. Apply slow, even pressure to maneuver the teeth back into their correct upright position.
Be very careful when adjusting teeth as they can break off easily if too much force is applied. Metal or molded plastic teeth are more durable than coil teeth, but still require a delicate touch. Only adjust one or two teeth at a time and make gradual alignments.
For longer areas of distortion, slowly work your way along the length of the zipper, straightening any wavy or distorted sections bit by bit. The goal is to get all teeth sitting vertically so they can mesh together cleanly again.
Tips for Straightening Zipper Teeth
- Use magnification to closely examine extent of distortion
- Grip teeth near the base to avoid breakage
- Apply the least pressure needed to realign teeth
- Work incrementally down the zipper for best results
- Avoid over-adjusting or bending teeth too far
- Check alignment frequently as you make adjustments
Patience is required, but with care most bent zipper teeth can be successfully straightened again.
Re-inserting Zipper Tape into Slider
Once any damaged or misaligned teeth have been repaired, the next step is to insert the edge of the zipper tape back into the grooved channel inside the slider box. This reattaches the zipper to the slider so it can glide open and close properly.
Position the unattached tape end near the entrance to the slider box. Use tweezers or pliers to grip the tip of the tape. Gently feed the edge of the tape into the slider box groove. Take care not to bend or twist the tape. Push the tape into the channel until it is engaged inside the slider.
Apply slight downward pressure as you slowly pull on the slider box to close the zipper. This helps keep the tape seated in the groove as it passes through the slider mechanism. If resistance is felt, stop and recheck that the tape is correctly aligned before continuing.
Close the zipper completely to ensure the tape remains engaged. Double check that the zipper teeth are meshing cleanly. If not, you may need to make further adjustments.
Tips for Re-inserting Zipper Tape
- Protect edges of tape to avoid snagging
- Guide tape slowly and gently into slider groove
- Keep tape flat and untwisted
- Apply light pressure on tape when closing zipper
- Frequently check tape stays seated in slider box
- Do not force tape or slider box closure
Take your time feeding the zipper tape through the slider to avoid jamming. The correct technique will have the zipper gliding smoothly again.
Securing Zipper Stops
The stops at the top and bottom of the zipper play an important role in keeping the slider attached to the tape. On backpacks, they are typically sewn directly onto the fabric rather than hanging off the zipper tape itself.
Examine the stops closely to ensure they are still intact and firmly anchored to the fabric. If a stop is loose, use a needle and strong thread to securely re-stitch it. Knotting the thread several times helps reinforce the attachment.
If a stop is missing or damaged beyond repair, you can install a new stop. Metal stops with prongs can be carefully hammered into the fabric using pliers or a mallet. For other stop types, carefully sew into place using sturdy stitches.
Reinforce any hand-sewn stops with fabric glue for added strength and durability. Allow time for it to fully dry before using the zipper. Proper stops are essential for successful zipper function.
Stop Tips
- Check stops frequently for signs of loosening
- Hand-sew for better control replacing stops
- Use strong thread and tight stitches
- Knot thread ends securely
- Apply fabric glue around sewn stops
- Avoid pulling directly on stops
Stops take a lot of stress, so ensure they are anchored well. Replace any loose or missing stops for best zipper operation.
Testing and Using the Repaired Zipper
Once repairs are complete, thoroughly test the zipper to verify proper function. Slowly pull the slider through its full range of motion several times. The zipper should glide smoothly without significant resistance or catching. The tape should remain securely inside the slider box without slipping out.
Check that the zipper opens and closes completely with the stops securely in place at both ends. Give an extra strong final tug on the closed zipper to confirm teeth alignment and hold strength. The zipper should operate the same as new when repairs are successful.
Apply some zipper lubricant inside the slider box and onto the zipper teeth. This reduces friction and further enhances the smoothness of the zipper action.
Be gentle when initially using the repaired zipper until you confirm it is holding properly. Avoid forcing the slider or putting undue strain on the zipper components. With proper care, your backpack zipper can provide reliable use once again.
Tips for Using Repaired Zippers
- Test slider travel and tape alignment
- Confirm stops are anchored securely
- Check for smooth opening and closing
- Apply zipper lubricant for slick operation
- Avoid over-stressing the zipper at first
- Check periodically for signs of new issues
Your patience and care with the zipper repair will keep your backpack zipping comfortably for many years to come.
Professional Zipper Repair
For zippers with extensive damage or complicated construction, professional zipper repair may be your best option for a long-lasting fix. Seek out an experienced tailor, shoe repair specialist, or gear repair shop.
They have the necessary tools, equipment, and expertise to tackle repairs beyond what is feasible at home. This includes issues like:
- Complete zipper replacements
- Broken or repaired slider boxes
- Severely distorted or damaged zipper teeth
- Detached fabric tape
- Custom zipper fabrication
- Tight spots or jammed zippers
Professional zipper repair services typically have a turnaround time of a few days and may cost $10-$50 on average depending on the complexity. This small investment can bring new life to a cherished backpack with a tricky broken zipper.
Professional Zipper Repair Options
- Tailors and alteration shops
- Shoe and leather goods repair
- Outdoor gear and bag repair
- Industrial sewing services
- Zipper manufacturing companies
- Canvas repair specialists
Seeking professional help can often save a heavily damaged zipper that is beyond DIY repair methods. Their services are worth considering for your most valued packs and bags.
Conclusion
Putting a separated zipper back on track does require some zipper repair skills, specialized tools and patience. But with care, most zipper malfunctions on backpacks can be fixed at home. Straighten bent teeth, reinsert loose tape into the slider, secure stops and lubricate for smooth operation. For more extensive zipper damage, seek professional repair services. With the right techniques, a stubborn broken backpack zipper can be returned to reliable working order.