Pleated structure of trousers lining and manufacturing process of pleated structure

By adding pleats to the lining of the trousers, the problem of traditional dress trousers neglecting close-fitting comfort is solved, improving comfort during waist and leg movement, and enhancing the wearing experience while maintaining an attractive appearance.

CN121014959APending Publication Date: 2025-11-28LAMPO
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202510966341.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-14
Publication Date
2025-11-28

AI Technical Summary

Technical Problem

Traditional pleating techniques for Western-style trousers focus solely on aesthetics, neglecting comfort and fit, particularly in terms of comfort during movement around the waist and legs.

Method used

Adding pleats to the lining of the trousers, including creating slits at the crotch and folding them upwards, combined with pleat allowance sections, creates pleats that increase leg movement and comfort.

Benefits of technology

It improves the comfort of wearing pants, especially when the legs are moving or when sitting or squatting for a long time, so that the pants do not restrict movement. It maintains the appearance while improving the comfort of the human body.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121014959A_ABST
    Figure CN121014959A_ABST
Patent Text Reader

Abstract

The invention relates to the technical field of trousers, in particular to a pleat structure of a trousers lining and a manufacturing process of the pleat structure. The pleat structure of the trousers lining comprises trousers composed of a front body trouser piece and a lining, the lining is sewn on the inner side of the front body trouser piece, and the pleat structure is characterized in that the pleat structure is arranged at the position, 5-8 cm below the crotch bottom position, of the lining and comprises a first cutter hole and a second cutter hole which are formed in the rear end, 5-8 cm below the crotch bottom position, of the lining, and the first cutter hole and the second cutter hole are communicated with each other. After the second cutter eye is folded upwards, the second cutter eye is located at the upper end of the first cutter eye, a pleat opening is formed, and the pleat structure further comprises a pleat amount releasing section arranged on the side of the crotch seam and at the foot opening. The process has the biggest advantage that the human body cannot be stumbled by trousers to make the human body uncomfortable when legs move, squat or sit for a long time after wearing, the attractive appearance is kept, and the comfort of the human body can be greatly improved.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of trousers, especially it is related to a kind of pleat structure of trousers lining and its manufacturing process. BACKGROUND

[0002] Pleat refers to the longitudinal swing of the wrinkle form formed by folding, compression and other methods on clothing. They are often used for decoration and design of collar, cuff, hem and other parts.

[0003] Pleat is an important detail design of western-style trousers and casual trousers, and the details of its structure and process form can better measure the positioning and standard of high-end products. The traditional western-style trousers pleat process design is only limited to the beauty of surface design, but ignores the comfort of close-fitting, and lining trousers is directly related to the comfort of wearing.

[0004] From the appearance structure, pleat process is more common in trousers, and the pleat position of more western-style trousers is mainly distributed on the waist, and the pleat amount is appropriately adjusted in large and small, more and less, which is consistent with the pleat of the lining trousers waist to achieve the comfortable feeling of modifying the trousers and sagging. When selecting the lining trousers and the lining trousers, considering the different wearing appearance and comfort of the experimenter, the lining trousers pleat process can not only maintain the beauty of the appearance line, but also improve the wearing comfort, which is another innovation of the technical process and the unique place of the detail design of high-end brands.

[0005] Lining trousers pleat is an important detail design of western-style trousers and casual trousers, and the details of its structure and process form can better measure the positioning and standard of high-end products. The traditional western-style trousers pleat process design is only limited to the beauty of surface design, but ignores the comfort of close-fitting, and lining trousers is directly related to the comfort of wearing. As the lining of western-style trousers, it also needs to be pleated on the waist, hips or legs to increase the three-dimensionality and fluidity of the clothing, but when pleating, the amount of fabric, the shape of the piece and the sewing process will affect the comfort of the clothing. SUMMARY

[0006] The present application aims to solve the above-mentioned defects, and provides a kind of pleat structure of trousers lining and its manufacturing process.

[0007] In order to overcome the defects in the background art, the technical scheme adopted by the present application to solve its technical problems is: the pleat structure of the lining of the trousers includes a front body piece and a lining to form a pair of trousers, the lining is sewn on the inner side of the front body piece, and a pleat structure is provided on the lining at a position 5-8 cm below the crotch bottom, the pleat structure includes a knife eye one and a knife eye two provided at the rear end of the crotch bottom position 5-8 cm below, and the knife eye two is folded upwards to make the knife eye two located at the upper end of the knife eye one, and a pleat opening is formed, the pleat structure further includes a pleat amount section provided at the lower crotch seam side and at the foot opening.

[0008] According to another embodiment of the present invention, the distance between the first and second stab holes is further 1-2.5 cm.

[0009] According to another embodiment of the invention, the lining further includes a length from the waistband to above the knee of the trousers.

[0010] According to another embodiment of the present invention, the length of the pleat extension section is consistent with the distance between the first and second cut holes.

[0011] The manufacturing process of the pleated structure of the trouser lining includes: Step 1: Determine the position of the pattern pleats: Add two notches 5-8 cm below the crotch of the pattern. At the same time, make pleat allowances on the crotch seam side and at the hem. The distance of the pleat allowance is the same as the distance of the two notches. Step 2: Folding the pleats of the undershirt: With the right side up, fold the undershirt upwards along the two notches on the pattern so that the two notches are aligned, the pleats are on top, and the pleats are facing down. Step 3: Secure the pleats of the underpants: Place the pleats folded in step 2 onto the sewing line of the flatbed machine and secure them. Step 4: Ironing the pleats: Transfer the pleated trousers pattern to the ironing board and iron along the pleats. After the pleats are 1.5-2 cm long, they will naturally extend. Step 5: Join the front trousers and undershirt with overlock: With the right side of the front trousers on top and the undershirt on the bottom, and the wrong side of the undershirt facing up, place the two pieces flat, align the notches, and first join the overlock from the crotch to the hem. Then, change the direction of the pattern pieces and join the overlock from the hem to the waistband. The overlock notch is 0.4 cm, and the stitch length is 14-15 stitches / 3 cm.

[0012] According to another embodiment of the present invention, the third step further includes fixing the stitching position at 0.3-0.5 cm from the raw edge of the crotch seam, stitching with a stitch spacing of 6-7 stitches / 3 cm, stitching length of 5 cm, and checking the symmetry of the pleats on the underwear.

[0013] According to another embodiment of the present invention, the distance between the two incisions in the first step is 1-2.5 cm, and the distance of the pleat allowance is also 1-2.5 cm.

[0014] The beneficial effects of this invention are: the biggest advantage of the pleated structure of this trouser lining is that when wearing it, the body will not feel uncomfortable due to the trousers restricting leg movement, squatting, or sitting for a long time. Adding pleats to the trouser lining is an innovative improvement method that better reflects the subtle details of humanized design. It not only maintains the aesthetic appearance but also greatly improves the comfort of the human body. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a structural diagram of the lining; Figure 3 This is a structural diagram showing the folding method of the two slits on the inner lining; Figure 4 This is a schematic diagram of the finished trousers' structure. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] Because the pleating process of dress trousers only adds pleats to the waist, it fails to allow sufficient movement in the leg circumference of the underpants and neglects the comfort of the finished trousers. Therefore, the pleating process of the front panel of the underpants is based on the regular pleating process of dress trousers, and adds pleating process to the crotch of the underpants. When wearing the improved trousers, there will be no feeling of restriction or discomfort in the crotch when the body lifts its legs, squats, or sits for a long time, and the leg movement is comfortable and natural.

[0019] like Figures 1-3 A pleated structure for a trouser lining is shown, comprising a trouser 1 consisting of a front trouser piece 4 and an inner lining 2. The inner lining 2 is sewn inside the front trouser piece 4. A pleated structure 3 is provided on the inner lining 2 at a position 5-8 cm below the crotch. The pleated structure 3 includes a first pleat 7 and a second pleat 6 located at the rear end 5-8 cm below the crotch. The second pleat 6 is folded upward so that it is located above the first pleat 7 and forms a pleat opening 5. The pleated structure 3 also includes a pleated allowance section 8 located on the side of the crotch seam 10 and at the leg opening.

[0020] The distance between eyelet 7 and eyelet 6 is 1-2.5cm, and the length of the pleat allowance section 8 is the same as the distance between eyelet 7 and eyelet 6. The length of the pleat allowance section 8 is set according to the cutting distance between eyelet 7 and eyelet 6, and the length of the lining 2 is from the waistband to the top of the knee. When eyelet 6 is folded upwards, the pleat allowance section 8 ensures that the leg opening is flush.

[0021] The length of the inner lining 2 is from the waistband to the top of the knee. Adding the inner lining 2 prevents the body from feeling restricted or uncomfortable when moving the legs, squatting, or sitting for a long time. It also does not increase the thickness of the pants and does not restrict the knee area.

[0022] like Figures 1-4 The image shows the manufacturing process of the pleats on the front panel of the undershirt. This process includes: Step 1: Determine the pleat placement on the pattern: Add two notches 5-8 cm below the crotch area of ​​the pattern, namely notch 1 (7) and notch 2 (6). These two notches increase the allowance at the crotch seam (10 cm) and leg opening. Simultaneously, add pleat allowance on the side of the crotch seam (10 cm) and at the ankle. The distance of the pleat allowance should be consistent with the distance between the two notches. Figure 1 As shown; Step 2: Folding the Underpants: With the right side up, fold the underpants upwards along the two notches on the pattern, aligning the two notches, with the pleats on top and the pleats facing down. Figure 2 , 3 As shown; Step 3: Fixing the pleats in the underwear: Place the pleats from step 2 onto the flat sewing machine and fix them by stitching. The fixed position is 0.3-0.5 cm away from the raw edge of the crotch seam. Stitching is done with a stitch length of 6-7 stitches / 3 cm and a stitch length of 5 cm. Check that the pleats in the underwear are symmetrical. Step 4: Ironing the pleats: Transfer the pleated trousers pattern to the ironing board and iron along the pleats. After the pleats are 1.5-2 cm long, they will naturally extend. Step 5: Join the front trousers and undershirt with overlock: With the right side of the trousers on top and the undershirt on the bottom, and the wrong side of the undershirt facing up, place the two pieces flat, align the notches, and first join the overlock from the crotch to the hem. Then, reverse the pattern and join the overlock from the hem to the waistband. The overlock notch should be 0.4 cm wide, and the stitch length should be 14-15 stitches / 3 cm. This method will prevent the undershirt from becoming defective.

[0023] The above describes the pleated design of underwear. The biggest advantage of this design is that it prevents discomfort caused by the trousers restricting leg movement, squatting, or prolonged sitting. Adding pleats to underwear is an innovative improvement that subtly reflects thoughtful, human-centered design details. It not only maintains aesthetic appeal but also significantly enhances comfort. Figure 4 As shown.

[0024] The main differences between the pleating techniques for dress trousers and those for underwear are: I. Process: 1. Pleating process for trousers: According to the notch at the waistband of the trouser piece, use a flat loom to gather the hidden pleats or fold them in half to fix them, and trim to leave 1cm for seam (the number and depth of pleats can be adjusted according to the pattern and fabric). 2. Pleating process of the front piece of the undershirt: Fold the undershirt upwards below the crotch seam according to the notch, and fix the pleat position with a flat loom.

[0025] II. Increase in trading volume: 1. Trouser pleating technique: Adding allowance at the waistband of the trousers allows for greater leg movement. The same pleating is made only at the same position on the waistband of the undershirt, ensuring a perfect fit between the outer and inner layers. 2. Pleated fabric on the front of the undershirt: In addition to the existing allowance for the undershirt, an extra 1-2.5cm allowance is added at the crotch to increase comfort and freedom of movement. The amount of pleats at the crotch can be adjusted according to the fabric, pattern, and body type.

[0026] Therefore, adding pleats to the undershirt inside the dress pants is the direct factor that affects the comfort of wearing them.

[0027] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pleated structure for a trouser lining, comprising trousers (1) consisting of a front trouser piece (4) and an inner lining (2), wherein the inner lining (2) is sewn inside the front trouser piece (4), characterized in that, The lining (2) has a pleated structure (3) located 5-8 cm below the crotch. The pleated structure (3) includes a first slit (7) and a second slit (6) located 5-8 cm below the crotch. The second slit (6) is folded upward so that it is located above the first slit (7) and forms a pleat (5). The pleated structure (3) also includes a pleated extension section (8) located on the crotch seam side and at the foot opening.

2. The pleated structure of a trouser lining as described in claim 1, characterized in that, The distance between the first (7) and the second (6) of the knife hole is 1-2.5cm.

3. The pleated structure of a trouser lining as described in claim 1, characterized in that, The length of the lining (2) is from the waistband to above the knee of the pants.

4. The pleated structure of a trouser lining as described in claim 1, characterized in that, The length of the pleat extension section (8) is consistent with the distance between the first (7) and the second (6) of the knife eye.

5. The manufacturing process of the pleated structure of the trouser lining as described in claim 1, characterized in that, The process includes: Step 1: Determine the position of the pattern pleats: Add two notches 5-8 cm below the crotch of the pattern. At the same time, make pleat allowances on the crotch seam side and at the hem. The distance of the pleat allowance is the same as the distance of the two notches. Step 2: Folding the pleats of the undershirt: With the right side up, fold the undershirt upwards along the two notches on the pattern so that the two notches are aligned, the pleats are on top, and the pleats are facing down. Step 3: Secure the pleats of the underpants: Place the pleats folded in step 2 onto the sewing line of the flatbed machine and secure them. Step 4: Ironing the pleats: Transfer the pleated trousers pattern to the ironing board and iron along the pleats. After the pleats are 1.5-2 cm long, they will naturally extend. Step 5: Join the front trousers and undershirt with overlock: With the right side of the front trousers on top and the undershirt on the bottom, and the wrong side of the undershirt facing up, place the two pieces flat, align the notches, and first join the overlock from the crotch to the hem. Then, change the direction of the pattern pieces and join the overlock from the hem to the waistband. The overlock notch is 0.4 cm, and the stitch length is 14-15 stitches / 3 cm.

6. The manufacturing process of the pleated structure of the trouser lining as described in claim 1, characterized in that, In the third step, the stitching position is fixed at 0.3-0.5 cm from the raw edge of the crotch seam, with a stitch spacing of 6-7 stitches / 3 cm and a stitch length of 5 cm. Check that the pleats of the underwear are symmetrical.

7. The manufacturing process of the pleated structure of the trouser lining as described in claim 1, characterized in that, In the first step, the distance between the two incisions is 1-2.5 cm, and the distance of the pleat allowance is also 1-2.5 cm.