A cuff seam location attachment structure

Abstract

The utility model provides a kind of pant leg seam position bonding structure, including trousers main body, and the joint formed by at least two pieces of cutting piece at seam position through seam connection, between the overlapping surface of the at least two pieces of cutting piece, still be provided with a double-sided adhesive bonding layer;The double-sided adhesive bonding layer in the side of the seam line will piece be adhered, and with the seam line jointly constitute the composite connection structure of the seam position.The utility model hides in interior by inverted seam design with double-sided adhesive layer jointly with seam line protrusion, make contact surface reach smooth wearing effect without trace, solve the foreign body sensation problem of traditional seam structure, simultaneously, by glue-wire collaborative stress mechanism, the durability and tear resistance of seam position are significantly improved.

Description

Technical Field

[0001] This utility model relates to a trouser hem seam fitting structure. Background Technology

[0002] In trouser manufacturing, seam structure directly determines the product's comfort, aesthetics, and durability. Currently, traditional sewing threads are commonly used to connect trouser seams (such as side seams, crotch seams, and waistband seams). However, this purely sewing structure has several inherent drawbacks: First, the stiff sewing thread creates raised ridges on the fabric surface, which can cause a noticeable foreign body sensation and even discomfort when rubbed against the skin over time. Second, to achieve strength, seams usually require three or four stitches for overlocking. Combined with the thickness of the fabric itself, this makes the seams stiff and heavy, affecting the trousers' lightness and fit. Furthermore, needle holes are inevitable during the sewing process. These tiny holes not only damage the fabric's integrity but can also become the starting point for loose yarns and seam tears, posing potential quality risks. Finally, during the sewing process, factors such as thread tension and fabric slippage can easily cause seam shrinkage and twisting, affecting the finished product's appearance. Therefore, there is an urgent need in the existing technology for a new type of trouser hem seam structure that can make up for the shortcomings of a pure stitch structure, while effectively improving wearing comfort, lightness and appearance while maintaining the reliability of the stitch connection. Utility Model Content

[0003] This invention provides a trouser seam fitting structure and construction method, which can effectively solve the above problems.

[0004] This utility model is implemented as follows: A trouser hem seam bonding structure includes a trouser body body and a seam formed by connecting at least two pieces of fabric at the seam with a stitch. A double-sided adhesive layer is provided between the overlapping surfaces of the at least two pieces of fabric and on one side of the stitch. The seam is formed with a reverse seam structure facing the double-sided adhesive layer, so that the double-sided adhesive layer and the stitch together constitute a composite connection structure hidden inside.

[0005] The beneficial effects of this utility model are: This invention achieves a fundamental improvement in seam flatness by adding a double-sided adhesive layer to the traditional stitching structure to form a composite connection structure. The double-sided adhesive layer pre-fixes the cut pieces before sewing, completely eliminating wrinkles caused by sewing slippage. In the finished product, the structure hides the raised seam and the double-sided adhesive layer inside through a reverse seam design, resulting in a smooth and seamless wearing effect. This solves the problem of foreign body sensation in traditional stitching structures. At the same time, the adhesive-thread synergistic stress mechanism significantly improves the durability and tear resistance of the seam. Attached Figure Description

[0006] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0007] Figure 1 This is the front view of this utility model.

[0008] Figure 2 This is a cross-sectional view of the present invention.

[0009] Figure 3 This is a diagram showing the inward turning of the trousers body of this utility model.

[0010] Main body of pants - 1; seams - 4; double-sided adhesive layer - 5; pocket fabric - 7; inner concealed zipper - 8; waistband - 2; hooks - 9. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0012] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0013] Reference Figure 1-3As shown, a trouser hem seam bonding structure includes a trouser body 1 and a seam formed by connecting at least two pieces of fabric at seam 4 with a stitch. A double-sided adhesive layer 5 is provided between the overlapping surfaces of the at least two pieces of fabric and on one side of the stitch. The seam 4 forms a reverse seam structure facing the double-sided adhesive layer 5, so that the double-sided adhesive layer 5 and the stitch together constitute a composite connection structure hidden inside.

[0014] When seam 4 is turned to one side, the other side (usually the outer side or the side worn next to the skin) becomes completely smooth and flat, greatly eliminating the feeling of foreign objects. In addition, the reversed seam structure hides the adhesive strip inside, reducing direct friction with the skin and snagging with the outside world, thus improving the adhesion durability.

[0015] Specifically, the implementation process of this composite connection structure is as follows: First, the double-sided adhesive layer 5 is pasted onto the seam of one of the cut pieces according to the preset shape and position; then, the other cut piece is aligned and pressed together, and the double-sided adhesive layer 5 provides initial adhesion, initially fixing the two cut pieces and effectively preventing slippage and misalignment during subsequent sewing; finally, sewing is performed along the seam 4, and the sewing thread 12 provides a final and secure mechanical lock. In this process, the double-sided adhesive layer 5 plays a role in pre-positioning, anti-slip, and filling and cushioning, while the sewing thread 12 undertakes the main load-bearing function. The two functions complement each other and work together to improve the overall quality of the final seam.

[0016] Furthermore, in practical applications, the double-sided adhesive layer 5 can be selectively configured according to cost and performance requirements. For example, it can be applied along the entire length of the side seam to achieve overall flatness and comfort; or it can be applied only to the key curved section from the hip to the thigh, where it plays a core role in preventing slippage and cracking in areas most prone to friction and stress, thereby achieving the best balance between cost and performance.

[0017] The double-sided adhesive layer 5 has a width of 0.3cm to 1cm and is arranged along the extension direction of the seam 4. In one embodiment, when the width of the double-sided adhesive layer 5 is 0.3cm, sufficient bonding area can be ensured to provide effective initial adhesion and fixing strength. If the width is too small, the bonding area is insufficient, and the fabric cannot be effectively fixed and slipped, thus losing its core function. When the width of the double-sided adhesive layer 5 is 1cm, cost can be controlled, flexibility can be ensured, and waste can be avoided. Excessively wide double-sided adhesive not only increases material costs but also makes the seam area stiff, affecting the natural drape and wearing comfort of the pants. A width of 1cm is sufficient to meet the fixing needs of most seams. Therefore, within this width range, the best fixing effect can be achieved at the lowest cost, while the narrow design ensures that the seam retains the necessary softness after bonding, without affecting the dynamic fit of the garment.

[0018] The double-sided adhesive layer 5 is made of low-temperature hot melt adhesive. Low-temperature hot melt adhesive only requires a lower temperature (compared to high-temperature pressing) to activate its adhesiveness. This avoids damage, hardening, or discoloration to certain sensitive fabrics (such as elastic fabrics, tulle, and functional coated fabrics) caused by high-temperature pressing, and also reduces production energy consumption and improves the safety of production operations.

[0019] The double-sided adhesive layer 5 is shaped like an arc or wave to match the curvature of the seam 4. Specifically, the seams of trousers (especially side seams and crotch) are not straight lines, but rather arcs that follow the curves of the human body. If straight strips of double-sided adhesive are used to adhere to these arc-shaped seams, wrinkles will form on the inside of the adhesive strip, while it will be stretched on the outside, resulting in weak adhesion, stress concentration, and a high risk of separation at the arc-shaped areas. Therefore, adopting an arc or wave design that matches the curvature of the seam allows the adhesive strip to fit perfectly with the fabric during application, without excess wrinkles or stretching. In particular, the arc-shaped adhesive strip can better adapt to and distribute the stress on the seam in all directions during wear, greatly reducing the risk of separation at the arc-shaped areas, ensuring uniform adhesion along the entire seam length, and improving the durability of the structure.

[0020] The main body of the trousers 1 has a pocket opening formed by laser cutting, and a pocket fabric 7 and an inner invisible zipper 8 are provided at the pocket opening; at least part of the edge of the pocket fabric 7 is bonded and fixed to the inside of the main body of the trousers 1 by a double-sided adhesive layer 5; the trouser seam bonding structure also includes a waistband 2, which is an elastic band covered by the main body of the fabric, and the connection between the waistband 2 and the main body of the trousers 1 is pre-bonded by the double-sided adhesive layer 5 and fixed by stitching; the end seam of the waistband 2 is sealed by the double-sided adhesive layer 5 and is provided with a three-fold fixed hook 9; the crotch seam of the main body of the trousers 1 is a three-fold structure, and the inner layer of the three-fold structure is bonded and fixed by the double-sided adhesive layer 5; the seam 4 is the side seam of the trousers, and the double-sided adhesive layer 5 is set along the entire length of the side seam or part of the key arc segment.

[0021] Double-sided tape is used to secure the pocket fabric and zipper, achieving a clean and aesthetically pleasing "no visible stitching" effect. Laser cutting ensures smooth, uncluttered pocket edges, which, combined with the concealed inner zipper, enhances the product's premium feel and technological sophistication. Pre-adhesion with double-sided tape before sewing effectively prevents slippage and misalignment of multiple fabric layers (main fabric + elastic band + lining) during sewing, ensuring a flat, undistorted waistband. Double-sided tape closures at the ends replace complex sewing, resulting in a thinner and more refined waistband. Furthermore, using double-sided tape to bond the inner layers of the three-fold structure increases interlayer bonding strength, distributes stress, significantly improves the crotch's durability, and prevents tearing.

[0022] Working principle: First, based on the curvature and stress characteristics of the seam 4, the low-temperature hot melt double-sided adhesive layer 5 is pre-placed at the seam of the cut piece in a suitable arc or wave shape. The adhesive is activated by hot pressing to achieve the initial positioning and fixation of the cut piece, effectively eliminating fabric slippage and misalignment during the sewing process. Then, backstitching is performed on the double-sided adhesive side to form a hidden structure at the seam. The double-sided adhesive plays a role in buffering, stress dispersion and auxiliary shaping inside, while the stitching undertakes the main structural connection function. Together, they form a composite connection system with complementary functions. Finally, while maintaining the connection strength, the seam is made flat, eliminating the feeling of foreign objects when wearing, improving dynamic comfort and product durability.

[0023] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A trouser hem seam fitting structure, comprising a trouser body (1) and a seam formed by connecting at least two pieces of fabric at the seam (4) with a sewing thread, characterized in that: A double-sided adhesive layer (5) is provided between the overlapping surfaces of the at least two pieces of fabric and on one side of the seam; the seam (4) forms a reverse seam structure facing the double-sided adhesive layer (5), so that the double-sided adhesive layer (5) and the seam together constitute a composite connection structure hidden inside.

2. The hem seam bonding structure according to claim 1, characterized in that, The width of the double-sided adhesive layer (5) is 0.3cm to 1cm and is arranged along the extension direction of the seam (4).

3. The hem seam bonding structure according to claim 1, characterized in that, The shape of the double-sided adhesive layer (5) is an arc or wave shape that matches the curvature of the seam (4).

4. The hem seam bonding structure according to claim 1, characterized in that, The main body of the pants (1) has a pocket opening formed by laser cutting, and the pocket opening is provided with a pocket fabric (7) and an inner invisible zipper (8); at least part of the edge of the pocket fabric (7) is bonded and fixed to the inside of the main body of the pants (1) by the double-sided adhesive layer (5).

5. The hem seam bonding structure according to claim 4, characterized in that, The hem seam bonding structure also includes a waistband (2), which is an elastic band covered by the fabric. The connection between the waistband (2) and the main body of the pants (1) is pre-bonded by the double-sided adhesive layer (5) and fixed by the stitching.

6. The hem seam bonding structure according to claim 5, characterized in that, The end seam of the waistband (2) is sealed by the double-sided adhesive layer (5) and is provided with a trouser hook (9) that is fixed after three folds.

7. The hem seam bonding structure according to claim 1, characterized in that, The crotch seam of the main body of the pants (1) has a three-fold structure, and the inner layer of the three-fold structure is bonded and fixed by the double-sided adhesive layer (5).

8. The hem seam bonding structure according to claim 1, characterized in that, The seam (4) is the side seam of the trousers, and the double-sided adhesive layer (5) is set along the entire length of the side seam or part of the key arc segment.

9. The hem seam bonding structure according to claim 1, characterized in that, The double-sided adhesive layer (5) is made of low-temperature hot melt adhesive.

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