Bonding process for waist of seamless bonding high-waist abdomen-in zipper shaping trousers

Abstract

The invention relates to the technical field of textile, and discloses a seamless bonding high-waist abdomen-in zipper shaping pants waist bonding process, the center of a front waist outer layer is slotted from the upper part of a waistband to the upper part of the bottom, the front surface of an invisible zipper is bonded with the slotted part of the front waist outer layer, and a waist-in shaping interlayer sheet is bonded with the invisible zipper on the back surface through a jelly film; the front waist inner layer is bonded with the waist-tightening shaping interlayer piece through the front waist jelly glue piece, the abdomen-tightening shaping interlayer piece and the front waist inner layer are wrapped by the reserved part of the front waist outer layer and the elastic band together and are fixed in a hot melting mode, the double-buckle row buckle is fixed to the top of the front waist inner layer through hot melt glue, and the row buckle belt hook piece is fixed to the upper portion of the front fly inner patch. Two open lines are stitched by a flatcar to reinforce the zipper, after the outer layer of the rear waist is folded, a rear waist elastic tape and a rear waist jelly film are added in the middle, then hot melting bonding is carried out, the two sides of the front waist piece and the two sides of the rear waist piece are sewn, a traceless joint strip is bonded to the stitching bone position, and bonding of the waist part of the plastic trousers is completed.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, in particular to a bonding process for the waist of high-waisted, abdomen-tightening, zipper-shaped pants with seamless bonding. Background Art

[0002] Traditional abdominal pants do not have seamless bonding technology, have many layers, complex appearance, uneven surface, uncomfortable to wear, and cannot be used for long-term wear by women. These shortcomings make traditional abdominal pants unable to play the role of comfort, abdomen, hip lifting, and body shaping at the same time, so an improved process is urgently needed to solve these problems.

[0003] Although the multi-layer structure design of traditional abdominal pants provides support and shaping effects to a certain extent, the excessive number of layers makes it feel heavy and uncomfortable when worn. Especially in summer or warm environments, this heavy feeling will increase the wearer's feeling of stuffiness and affect the comfort of daily activities. In addition, the complex appearance and uneven surface not only affect the aesthetics of the pants, but may also cause skin friction during use, causing redness, swelling or allergic reactions.

[0004] From a health perspective, wearing traditional tummy-control pants for a long time may have adverse effects on physical health. Due to its tight design, it may cause compression on the blood circulation in the abdomen and waist, thus affecting the body's normal metabolic function. For women who need to sit for a long time to work, this sense of compression will be more obvious, which may cause waist fatigue or other related health problems.

[0005] In terms of functionality, although traditional tummy-control pants claim to have the effects of tummy-control and hip-lifting, in reality, due to the lack of scientific design and reasonable support structure, it is difficult to achieve the expected shaping effect. Many products simply compress the body through tight materials rather than shaping the curves through scientific mechanical principles, which not only has limited effect, but may also be counterproductive.

[0006] In view of the above defects, the market urgently needs an innovative solution, namely, seamlessly bonded high-waisted tummy-controlling zippered shaping pants. This new type of pants uses advanced seamless bonding technology, which greatly reduces the stitches during the sewing process, making the pants surface smoother and more comfortable to wear. At the same time, through optimized design and material selection, it is light, breathable, and maintains good elasticity and support, effectively improving the wearing experience.

[0007] The use of seamless bonding technology not only improves the appearance and touch of the product, but also ensures the consistency of quality of each pair of trousers through precise process control. The application of this technology reduces errors in the production process, improves production efficiency, and also reduces the defective rate caused by improper sewing.

[0008] In addition, the new high-waisted, abdomen-tightening, zippered shaping pants pay more attention to the principles of ergonomics in design. By applying scientific pressure to the waist and abdomen, it helps the wearer improve their body shape and achieve a true abdomen-tightening and hip-lifting effect. This design not only takes into account aesthetics, but more importantly, it takes into account health and comfort, allowing women to enjoy a comfortable wearing experience while pursuing beauty. Summary of the invention

[0009] 1. Technical issues to be resolved

[0010] In view of the deficiencies in the prior art, the present invention provides a seamless bonding process for the waist of high-waisted, tummy-controlling, zipper-shaped shaping pants, which have the advantages of simpler appearance, smoother surface, and more comfortable wearing, and can control the abdomen, lift the buttocks, and shape the body. It solves the problem that traditional tummy-controlling pants have many layers, complex appearance, uneven surface, are uncomfortable to wear, and cannot be used for long-term wear by women.

[0011] (II) Technical solution

[0012] To achieve the above object, the present invention provides the following technical solution: a seamless bonding process for the waist of high-waisted, abdomen-controlling, zipper-shaped pants, comprising the following steps:

[0013] Step 1: Use scissors to slit the center of the outer layer of the front waist from above the waistband to 1-2cm above the bottom;

[0014] Step 2: Use a high-quality hot melt glue gun to glue the front of the invisible zipper to the outer seam of the front waist with hot melt glue;

[0015] Step 3: Glue the waist shaping sandwich sheet to the invisible zipper on the reverse side through the jelly film;

[0016] Step 4: Bond the front waist inner layer to the waist shaping interlayer sheet through the front waist jelly film;

[0017] Step 5: Wrap the abdomen shaping sandwich sheet and the front waist inner layer together with the reserved part of the front waist outer layer together with the elastic, and fix them by hot melting;

[0018] Step 6: Fix the double-button button to the top of the front waist inner layer with hot melt glue, fix the button belt hook piece above the placket inner patch, and fix it to the front waist inner layer with hot melt glue, and use a flat sewing machine to sew two visible lines to reinforce the zipper;

[0019] Step 7: After folding the outer layer of the back waist in half, add back waist elastic and back waist jelly film in the middle, and then perform hot melt bonding;

[0020] Step 8. Use an overlock machine to sew the two sides of the front waist piece to the two sides of the back waist piece, glue the seamless tape on the seam bone position, and the plastic trouser waist is bonded.

[0021] Preferably, in step 1, the slit between the center of the front waist outer layer and the waistband cannot be cut off to ensure that the front waist remains a complete one-piece, and the front waist elastic width reserved above is between 3-5 cm for fitting the hot-melt front waist elastic.

[0022] Preferably, in the step 2, the front side of the invisible zipper and the slit of the front waist outer layer are bonded by hot melt adhesive, the bonding temperature is 120-150° C., the bonding time is 5-10 seconds, and the two sides of the slit are aligned.

[0023] Preferably, in the step three, the waist shaping interlayer sheet is bonded to the invisible zipper on the reverse side via a jelly film, and the bonding position is between 0.5 and 1 cm from both sides of the zipper tooth track.

[0024] Preferably, in step 4, the front waist inner layer is bonded to the waist shaping interlayer sheet through the front waist jelly film, and the bonding conditions are: the temperature is controlled between 80-100° C., the pressure is controlled between 5-8N, and the time is controlled between 4-8s.

[0025] Preferably, in step five, the back piece portion reserved for the front waist outer layer is wrapped together with the elastic to wrap the abdomen shaping sandwich sheet and the front waist inner layer at the waistline position, and fixed by hot melting, and the hot melting conditions are: temperature of 120-125°C, pressure of 5-7N, and time of 5-10s.

[0026] Preferably, in step six, the double-button button is fixed to the top center of the front waist inner layer by hot melt adhesive, the button belt hook piece is fixed 1-2 cm above the inner patch of the placket, and fixed to the corresponding position of the front waist inner layer by hot melt adhesive, and two 0.6 cm visible lines are sewn on a flat car to reinforce the zipper.

[0027] Preferably, the hot melt bonding conditions in step seven are: temperature of 145-150° C., pressure of 8-10N, and time of 3-5s.

[0028] Preferably, the elasticity of the back waist is 2-3 cm longer than that of the front waist.

[0029] Preferably, the rear cashew nut jelly film is a non-seam film, and the front cashew nut jelly film is a seam film.

[0030] Compared with the prior art, the present invention provides a seamless bonding process for the waist of high-waisted, abdomen-controlling, and shaping trousers with a zipper, which has the following beneficial effects:

[0031] 1. The present invention has a one-piece front waist and back waist, wherein the front waist comprises a front waist surface layer, a front waist interlayer shaping piece, and a front waist inner layer, and the back waist comprises a back waist surface layer, and the back waist inner layer has a shaping piece bonded in the front waist to provide abdominal support, and the zipper is embedded in the front waist interlayer through a seamless bonding process, which is firm and has no bone line, making the surface smoother and making the zipper truly invisible, thereby improving wearing comfort and leaving no marks after long-term wear. The hip-lifting piece bonded seamlessly to the inner lining of the back panel of the pants extends in an arc from the crotch to both sides to the upper edge of the back panel fabric surface, so as to form a high-pressure belt on the side of the shaping pants to tighten the excess fat inward, thereby providing an integrated body shaping solution for lifting the buttocks and shaping the legs, and further improving the buttocks shaping effect through the secondary lifting of the buttocks by the hip-lifting piece, and the zipper design makes it easier to put on and take off.

[0032] 2. The present invention uses seamless bonding technology to bond the zipper, outer fabric, interlayer and lining together with the least number of layers. On the basis of ensuring a firm zipper connection, the appearance is simpler, the surface is smoother, and the wearing is more comfortable. It meets the various needs of women in daily wearing of pants, plays the role of slimming the abdomen, lifting the buttocks and shaping the body, and meets the psychological requirements of women for shaping pants. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the present invention;

[0034] Figure 2 A flow chart was prepared for the present invention. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1 - Figure 2 A seamless bonding process for the waist of high-waisted, abdomen-controlling, zipper-shaped pants comprises the following steps:

[0037] Step 1: Use sharp scissors to slit the center of the outer layer of the front waist from above the waistband to 1-2cm above the bottom. Make sure the cut is neat and straight so that the subsequent process can proceed smoothly. This step reserves space for the installation of the invisible zipper, making the final product more beautiful.

[0038] Step 2: Choose a high-quality hot melt glue gun and glue the front of the invisible zipper to the slit of the outer layer of the front waist with hot melt glue. Apply the special glue evenly on the back of the invisible zipper, then aim at the slit of the outer layer of the front waist, press gently to make it fit tightly, and be careful to avoid glue overflowing and affecting the appearance. This can ensure that the invisible zipper is firmly fixed on the front waist, while maintaining an overall smooth and seamless effect;

[0039] Step 3: Glue the waist shaping interlayer sheet with the invisible zipper on the reverse side through the jelly film, and use the hot melt glue gun to slowly move along the edge to make the three parts tightly combined. During the movement, check whether there are bubbles. This structural design will not only enhance the waist support, but also improve the wearing comfort, making the shaping pants more functional.

[0040] Step 4: Bond the front waist inner layer to the waist shaping interlayer through the front waist jelly film, and use a hot melt glue gun to heat and fix it around to ensure seamless connection between the layers. While increasing internal stability, it can also reduce the number of visible seams on the outside, further improving the aesthetics of the product.

[0041] Step 5. Wrap the abdomen shaping sandwich sheet and the front waist inner layer together with the reserved part of the front waist outer layer together with the elastic, fix them by hot melt, and use a hot melt glue gun to quickly and evenly apply pressure along the edge to ensure that each part is firmly locked. This not only ensures the good closure of the entire waist area, but also gives the product the ability to stretch and adapt to the needs of different body shapes;

[0042] Step 6. Fix the double-button button to the top of the front waist inner layer with hot melt glue, fix the button belt hook piece on the top of the placket inner patch, and fix it to the front waist inner layer with hot melt glue, use a flat sewing machine to sew two visible lines to reinforce the zipper, and use a sewing machine to sew a straight line along both sides of the zipper to strengthen its strength. The above additional fixing measures will help to increase the service life of the pants and ensure that they will not fall off or be damaged easily during daily activities;

[0043] Step 7. After folding the outer layer of the back waist, add back waist elastic and back waist jelly film in the middle, and then perform hot melt bonding. Turn on the hot melt glue gun and gradually push from one end to the other end until it is completely sealed. This step can not only increase the flexibility of the back, but also effectively prevent the discomfort caused by long-term wearing.

[0044] Step 8. Use the overlock machine to sew the two sides of the front waist piece to the two sides of the back waist piece, glue the seamless tape on the seam bone position, and the plastic trouser waist is glued to complete the bonding, and the bone position and the seam line are covered. The last step is to use professional overlock equipment to carefully handle the joint between the front and back parts. During this process, special attention should be paid to not let any extra lines be exposed. After completion, remember to affix specially designed seamless stickers to further beautify the appearance.

[0045] The advantages are: using the above complete steps, the waist part of the seamless high-waist zipper shaping pants has been completed, which is beautiful, flat, seamless, and abdomen-tightening, meeting women's psychological requirements for shaping pants.

[0046] Specifically, in step one, the slit between the center of the front waist outer layer and the top of the waistband cannot be cut off to ensure that the front waist remains a complete one-piece, and the front waist elastic width reserved above is between 3-5 cm for fitting the hot-melt front waist elastic.

[0047] Specifically, in step 2, the front side of the invisible zipper and the slit of the outer layer of the front waist are bonded by hot melt adhesive, the bonding temperature is 120-150°C, the bonding time is 5-10s, and the two sides of the gap are aligned to ensure smooth opening and closing of the zipper.

[0048] Specifically, in step three, the waist shaping interlayer sheet is bonded to the invisible zipper on the reverse side through a jelly film, and the bonding position is between 0.5 and 1 cm on both sides of the zipper tooth track to achieve a shaping effect.

[0049] Specifically, in step 4, the front waist inner layer is bonded to the waist shaping interlayer sheet through the front waist jelly film, and the bonding conditions are: the temperature is controlled between 80-100°C, the pressure is controlled between 5-8N, and the time is controlled between 4-8s, so as to facilitate skin-friendly wearing.

[0050] Specifically, in step five, the back piece reserved for the front waist outer layer is wrapped together with the elastic to wrap the abdomen shaping sandwich piece and the front waist inner layer at the waistline position, and fixed by hot melting. The hot melting conditions are: temperature of 120-125°C, pressure of 5-7N, and time of 5-10s.

[0051] Specifically, in step six, fix the double-button buttoning to the top center of the front waist inner layer with hot melt glue, fix the button belt hook piece 1-2 cm above the inner patch of the placket, and fix it to the corresponding position of the front waist inner layer with hot melt glue, and use a flat sewing machine to sew two 0.6 cm visible lines to reinforce the zipper.

[0052] Specifically, the hot melt bonding conditions in step seven are: temperature of 145-150° C., pressure of 8-10 N, and time of 3-5 s.

[0053] Specifically, the elasticity of the back waist is between 2-3cm longer than that of the front waist.

[0054] Specifically, the rear cashew nut jelly film is a non-seam film, and the front cashew nut jelly film is a seam film.

[0055] Example 1

[0056] A seamlessly bonded high-waisted, abdomen-controlling, zippered, shaping pants waist bonding process, comprising the following steps:

[0057] Step 1: Use scissors to slit the center of the outer layer of the front waist from the waistband to 1cm above the bottom. Do not cut it off to ensure that the front waist remains a complete piece. Leave 3.2cm of front waist elastic width on the top to fit the hot-melt front waist elastic.

[0058] Step 2: Use a high-quality hot melt glue gun to glue the front of the invisible zipper to the outer seam of the front waist with hot melt glue. The bonding temperature is 122°C and the bonding time is 8s to align the gaps.

[0059] Step 3: Glue the waist shaping sandwich sheet to the invisible zipper on the reverse side through the jelly film, with the bonding position 0.6 cm away from both sides of the zipper tooth track;

[0060] Step 4: Bond the front waist inner layer to the waist shaping interlayer sheet through the front waist jelly film, and the bonding conditions are temperature 95°C, pressure 5N, and time 6s;

[0061] Step 5: Wrap the back piece of the front waist outer layer together with the elastic at the waistline to wrap the abdomen shaping sandwich sheet and the front waist inner layer, and fix them by hot melting. The hot melting conditions are: temperature 120℃, pressure 6N, time 10s;

[0062] Step 6. Fix the double-button button fastener to the top center of the front waist inner layer with hot melt glue, fix the button fastener hook piece to 2 cm of the inner patch of the placket, and fix it to the corresponding position of the front waist inner layer with hot melt glue, and use a flat sewing machine to sew two 0.6 cm visible lines to reinforce the zipper;

[0063] Step 7, after the back waist piece is folded in half, the back waist elastic and back waist jelly film are added in the middle, and hot-melt bonding is performed. The hot-melt conditions are: temperature 145°C, pressure 10N, and time 5s;

[0064] Step 8. Use an overlock machine to sew the two sides of the front waist piece to the two sides of the back waist piece, and glue the seamless tape on the seam bone position.

[0065] Comparative Example 1

[0066] A process for preparing the waist of a traditional high-waisted abdomen-controlling trousers, comprising the following steps:

[0067] Step 1: Use scissors to slit the center of the front waist outer layer from above the waistband to 1cm above the bottom, cut off the front waist outer layer to form a two-piece structure, and reserve 3.2cm of front waist elastic width on the top to sew the front waist elastic;

[0068] Step 2: Use a high-quality hot melt glue gun to sew the front of the invisible zipper to the outer seam of the front waist. Pay attention to aligning the gap when sewing to ensure that the zipper opens and closes smoothly.

[0069] Step 3: Sew the waist shaping sandwich sheet to the front waist outer layer through the suture line, and the suture position is 0.6 cm away from both sides of the zipper tooth track;

[0070] Step 4: Sew the front waist inner layer to the waist shaping sandwich sheet through the suture line. Pay attention to the uniformity and firmness of the suture line when suturing.

[0071] Step 5: Wrap the back piece of the front waist outer layer reserved at the waistline together with the elastic to wrap the abdomen shaping sandwich piece and the front waist inner layer, and fix them with sutures;

[0072] Step 6. Fix the double-button button fastener at the top center of the front waist inner layer through the stitching line, sew the button fastener hook piece to the 2cm position of the placket inner patch, and fix it to the corresponding position of the front waist inner layer through the stitching line, and use the flat sewing machine to sew two 0.6cm visible lines to reinforce the zipper;

[0073] Step 7: Fold the back waist piece in half, add elastic to the middle part, and sew it in place with the sutures;

[0074] Step 8. Use an overlock machine to sew the two sides of the front waist piece to the two sides of the back waist piece. Pay attention to the uniformity and firmness of the seams when sewing.

[0075] Compared with the traceless bonding process of Example 1, the conventional preparation process of Comparative Example 1 has the following defects:

[0076] Uneven appearance: Since the multi-layer structure is connected by seams, it is easy to cause the fabric to wrinkle and the seams to be exposed, making the surface of the pants uneven and affecting the appearance.

[0077] Uncomfortable to wear: The presence of seams can easily cause friction when worn, causing skin discomfort. Long-term wearing may also cause marks, affecting comfort.

[0078] Limited functional effects: Traditional suturing technology makes it difficult to accurately control the position and structure of each functional layer, making it difficult to achieve the ideal abdominal tightening, hip lifting and body shaping effects at the same time.

[0079] Poor durability: The seams are prone to wear and loosening during long-term wear and washing, resulting in a loose structure of the pants and affecting their service life.

[0080] The seamless bonding process of Example 1 can effectively solve the above problems. Through precise bonding technology and reasonable structural design, the appearance of the pants is smoother and more beautiful, the wearing is more comfortable, the functional effect is better, and the durability is better, which meets the comprehensive requirements of modern women for shaping pants.

[0081] After the finished product prepared by the preparation method of Example 1 and the finished product prepared by Comparative Example 1 passed the quality inspection, volunteers of different age groups and different weights were recruited to conduct investigations on durability, comfort, appearance evaluation, and shaping function. The survey data are as follows:

[0082] Table 1 Example 1 (traceless adhesion) Rating

[0083]

[0084]

[0085] Table 2 Comparative Example 1 (Traditional Suture) Scoring

[0086]

[0087]

[0088] It can be seen from the above Tables 1-2 that the seamless bonding process of Example 1 is superior to the traditional sewing process of Comparative Example 1 in terms of comfort, appearance evaluation, shaping function and durability in all age groups and weight ranges. This shows that the seamless bonding technology and preparation process of the present invention can not only effectively improve the wearing experience, but also enhance the aesthetics and functionality of the product, while effectively improving the durability of the product.

[0089] Summarizing the above advantages: the present invention has a one-piece front waist and back waist, wherein the front waist includes a front waist surface layer, a front waist interlayer shaping piece, and a front waist lining layer, and the back waist includes a back waist surface layer, and the back waist lining layer, the shaping piece is bonded in the front waist to provide abdominal support, the zipper is buried in the front waist interlayer through a seamless bonding process, which is firm and has no bone line, making the surface smoother and making the zipper truly invisible, thereby improving the wearing comfort and leaving no marks after long-term wear. The hip-lifting piece seamlessly bonded to the lining of the back panel of the pants extends in an arc from the crotch to both sides to the upper edge of the back panel fabric surface, so as to form a high-pressure belt on the side of the shaping pants to tighten the excess fat inward, thereby providing an integrated body beauty solution for lifting the buttocks and shaping the legs, and further improving the buttocks beauty effect through the secondary lifting of the buttocks by the hip-lifting piece, and the zipper design makes it easier to put on and take off.

[0090] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A seamless bonding process for the waist of high-waisted, abdomen-tightening, zipper-shaped pants, characterized in that: The following steps are involved: Step 1: Use scissors to slit the center of the outer layer of the front waist from above the waistband to 1-2cm above the bottom; Step 2: Use a high-quality hot melt glue gun to glue the front of the invisible zipper to the outer seam of the front waist with hot melt glue; Step 3: Glue the waist shaping sandwich sheet to the invisible zipper on the reverse side through the jelly film; Step 4: Bond the front waist inner layer to the waist shaping interlayer sheet through the front waist jelly film; Step 5: Wrap the abdomen shaping sandwich sheet and the front waist inner layer together with the reserved part of the front waist outer layer together with the elastic, and fix them by hot melting; Step 6: Fix the double-button button to the top of the front waist inner layer with hot melt glue, fix the button belt hook piece above the placket inner patch, and fix it to the front waist inner layer with hot melt glue, and use a flat sewing machine to sew two visible lines to reinforce the zipper; Step 7: After folding the outer layer of the back waist in half, add back waist elastic and back waist jelly film in the middle, and then perform hot melt bonding; Step 8. Use an overlock machine to sew the two sides of the front waist piece to the two sides of the back waist piece, glue the seamless tape on the seam bone position, and the plastic trouser waist is bonded.

2. The seamless bonding process for the waist of high-waisted, abdomen-tightening, zipper-shaped pants according to claim 1, characterized in that: In the step 1, the slit between the center of the front waist outer layer and the waistband cannot be cut off to ensure that the front waist remains a complete one-piece, and the front waist elastic width reserved above is between 3-5 cm for fitting the hot-melt front waist elastic.

3. The seamless bonding process for the waist of high-waisted, abdomen-controlling, zipper-shaped pants according to claim 1, characterized in that: In the step 2, the front side of the invisible zipper and the slit of the front waist outer layer are bonded by hot melt adhesive, the bonding temperature is 120-150° C., the bonding time is 5-10 seconds, and the two sides of the slit are aligned.

4. The seamless bonding process for the waist of high-waisted, abdomen-controlling, zipper-shaped pants according to claim 1, characterized in that: In the step three, the waist shaping interlayer sheet is bonded to the invisible zipper on the reverse side through the jelly film, and the bonding position is between 0.5 and 1 cm from both sides of the zipper tooth track.

5. The seamless bonding process for the waist of high-waisted, abdomen-controlling, zipper-shaped pants according to claim 1, characterized in that: In the step 4, the front waist inner layer is bonded to the waist shaping interlayer sheet through the front waist jelly film, and the bonding conditions are: the temperature is controlled between 80-100° C., the pressure is controlled between 5-8N, and the time is controlled between 4-8s.

6. The seamless bonding process for the waist of high-waisted, abdomen-controlling, zipper-shaped pants according to claim 1, characterized in that: In the step 5, the back piece part reserved by the front waist outer layer is wrapped together with the elastic to wrap the abdomen shaping sandwich sheet and the front waist inner layer at the waistline position, and fixed by hot melting. The hot melting conditions are: temperature of 120-125°C, pressure of 5-7N, and time of 5-10s.

7. The seamless bonding process for the waist of high-waisted, abdomen-controlling, zipper-shaped pants according to claim 1, characterized in that: In step six, the double-button button is fixed to the top center of the front waist inner layer by hot melt adhesive, the button belt hook piece is fixed 1-2 cm above the inner patch of the placket, and fixed to the corresponding position of the front waist inner layer by hot melt adhesive, and two 0.6 cm visible lines are sewn on a flat car to reinforce the zipper.

8. The seamless bonding process for the waist of high-waisted, abdomen-controlling, zipper-shaped pants according to claim 1, characterized in that: The hot melt bonding conditions in step seven are: temperature of 145-150° C., pressure of 8-10N, and time of 3-5s.

9. The seamless bonding process for the waist of high-waisted, abdomen-controlling, zipper-shaped pants according to claim 1, characterized in that: The elasticity of the back waist is between 2-3 cm longer than that of the front waist.

10. The seamless bonding process for the waist of high-waisted, abdomen-controlling, zipper-shaped pants according to claim 1, characterized in that: The rear cashew jelly film is a non-seamless film, and the front cashew jelly film is a seam-slit film.

Images