Improvement of nylon double-layer toothed zipper or nylon single-layer toothed reversed zipper sewed to case

Abstract

The invention discloses an improvement of a nylon double-layer toothed zipper or a nylon single-layer toothed reversed zipper sewed to a case and aims to provide a technical improvement scheme through which the structure is simple, the connection is reliable and the nylon double-layer toothed zipper or the nylon single-layer toothed reversed zipper sewed to the case can be smoothly opened, closed and pulled. With the adoption of the technical scheme, the tail end of a zipper cloth tape of the nylon double-layer toothed zipper or the nylon single-layer toothed reversed zipper and a liner and a cushioning component of the case are sewed together in an aligned mode, a distance or gap channel which is enough to contain the spatial form volume from the lower half part of the zipper head to the bottom plate is formed after sewing due to the cushioning component, the function of smoothly and safely pulling the zipper head in a non-hindered mode is realized, and the functions and quality of the case are improved.

Description

technical field [0001] The present invention refers to the improvement of a nylon double-layer zipper or a nylon single-layer reverse zipper sewn on a bag, and particularly relates to a zipper that can smoothly pull the zipper head and is safe and explosion-proof through a thick pad component, improving and Related technologies to improve the function and quality of bags. Background technique [0002] Traditional nylon zipper 1 such as figure 1 Shown is a single-layer tooth. When it is sewn on a hard shell case or a soft cloth case, when the zipper tape 11 is used as the horizontal reference line, there is still enough space for the space gap of the case liner 10 to allow the zipper slider 12 to move. The lower bottom plate 121 smoothly passes through the gap in the thickness direction as figure 1 shown. But when the single-layer nylon zipper 1' used on the case and bag is reversed, because the sprocket 13' is below the zipper tape 11', when it is sewn on a hard or soft c...

AI Technical Summary

Problems solved by technology

But when the single-layer nylon zipper 1' used on the case and bag is reversed, because the sprocket 13' is below the zipper tape 11', when it is sewn on a hard or soft case and bag, the zipper tape 11' will be caused. The gap with the bag lining (fabric) 10' is too small as figure 2 As shown, the thickness of the sprocket 3' is below the horizontal line of the zipper tape 11', and the cavity of the zipper slider 12' is reversely designed, so the thickness of the bottom plate 121' plus the thickness of the sprocket 13', These two total thickness, just can't be accommodated in the passageway of zipper tape 11 ' and case bag liner 10 ' spacing.

That is, when the sprocket 13' is thick and the thickness of the lower base plate 121' of the slide fastener head 12' is greater than the distance channel between the zipper tape 11' and the lining 10' of the bag, the lower base plate 121' and the inner lining 10 of the luggage will be formed. interference, and hinder the movement of the zipper head 12', especially at the corner position of the bag, because when the zipper tape 11' is under tension, the distance channel between the lining 10' of the bag and the zipper tape 11' will be more Small, so the zipper puller 12' does not slide well, and it will also produce teeth bursting when hard pulling

In the same way, if the structure of the double-layer tooth zipper 2 is used on the luggage image 3 As shown, it is also the distance channel in the middle of the zipper tape 21, and there is also the defect that the zipper head is blocked and difficult to slide at the corner of the luggage.

like image 3 Shown is a schematic plan view of space blockage in the form of traditional N-shaped strips of hard-shell luggage after sewing. The inner lining (fabric) 20 of this hard-shell luggage is mainly made of PP / ABS / PC and other materials, while the traditional N-shaped The bar 3 is made of PVC or TPU, and has an upper layer 31, a middle layer 32 and a lower layer 33. The thickness of the three layers is roughly the same, and it also has the disadvantage of being difficult to move at the corner of the bag.

For the above two types of zippers used on bags, there is a situation that the zipper head cannot be pulled smoothly, and it is necessary to improve the structure of the nylon double-layer zipper or the nylon single-layer zipper that is sewn on the bag. No suitable structure can solve

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