High-quality western pants based on a quantification of the cut

Abstract

The application discloses high-quality western-style trousers based on a quantitative tailoring process, comprising a front trouser piece, a back trouser piece and a waistband piece, characterized in that: a concave structure is arranged at the center of the foot opening of the front trouser piece, and the concave amount is 0.5cm-1.5cm; a convex structure is arranged at the center of the foot opening of the back trouser piece, and the convex amount is 0.5cm-1.5cm; the front trouser piece and the back trouser piece are three-dimensional curved surface structures obtained by adopting a zoned fixed-point quantitative tailoring process to perform plastic forming on a planar cutting piece; the front trouser piece and the back trouser piece are spliced to form a front-short-back-long foot opening structure, and the height difference between the front and back of the foot opening is 1cm-3cm; a shrinkage structure with a length of 2cm-5cm is arranged on the top of the waistband piece. The application improves the three-dimensional fit, leg freedom and leg shape modification of the western-style trousers, and is suitable for industrial mass production, has high consistency and stability, and is of high quality.

Description

Technical Field

[0001] This application relates to the field of clothing design and manufacturing technology, and in particular to a high-quality pair of trousers based on a quantitative reduction process. Background Technology

[0002] Currently, most standard dress pants on the market are produced using an industrialized process of flat pattern making and direct sewing. The pattern pieces are flat and straight, without any targeted shaping to accommodate the curves of the hips, thighs, knees, and calves. The human leg has distinctive features such as an outward-protruding hip, an inward-curving knee, and a gradual change in calf thickness. After being sewn from flat pattern pieces, the pants have a straight silhouette that doesn't match the curves of the legs, resulting in a poor fit.

[0003] Regular dress pants have a fixed and uniform crotch allowance, with insufficient space in the front crotch. When consumers bend their knees or lift their legs, the crotch and knee areas of the pants are stretched and tight, restricting leg movement and resulting in poor wearing comfort. Prolonged activities can easily lead to problems such as fabric stretching and wrinkling, and the pants getting stuck in the crotch.

[0004] The shaping process involves using wet ironing to reshape garment pieces. The shrinking operation involves ironing shrinkage in specific areas of the piece, while the stretching operation involves ironing stretching in specific areas. Quantitative shaping refers to setting fixed numerical ranges for the shrinkage and stretching amplitudes of each area. Currently, most shaping methods for trousers rely on traditional manual shaping processes. This process depends entirely on the operator's experience and feel, lacking standardized quantitative procedures and fixed numerical constraints on the shrinkage and stretching amplitudes of each area. The shaping degree varies significantly between different workers and different batches of products, resulting in poor consistency in finished product patterns and unstable product quality under mass production, making it difficult to meet the demands of standardized, large-scale industrial production.

[0005] Meanwhile, the existing trousers only use a straight cut structure at the hem, without distinguishing the front and back lengths or the concave and convex shapes. When worn, excess fabric tends to bunch up at the front hem, and the back hem tends to ride up and expose the ankles. The conventional waistband is made by directly sewing straight pieces, without any shaping allowance at the top of the waistband. During wear, the waistband tends to open outwards, resulting in a poor fit. The inside of the hem lacks abrasion-resistant reinforcement, which can easily cause damage due to long-term friction with leather shoes, shortening the lifespan of the trousers. Summary of the Invention

[0006] This application provides a high-quality trousers based on a quantitative shaping process, which offers a complete and parameterized zoned and fixed-point quantitative shaping system. However, it cannot simultaneously solve multiple technical defects such as poor fit of trousers, limited mobility, lack of process standardization, unstable finished product pattern, and insufficient adaptability between the leg opening and waistband structure.

[0007] The embodiments of this application adopt the following technical solutions:

[0008] In a first aspect, embodiments of this application provide a high-quality pair of trousers based on a quantitative shaping process, comprising a front trouser piece, a back trouser piece, and a waistband piece. The front trouser piece has a concave structure at the center of its leg opening, with a concavity of 0.5cm to 1.5cm; the back trouser piece has a convex structure at the center of its leg opening, with a convexity of 0.5cm to 1.5cm; the front and back trouser pieces are three-dimensional curved structures obtained by plastically shaping flat pieces using a zoned, fixed-point, numerically quantitative shaping and ironing process; the front and back trouser pieces are joined to form a leg opening structure that is shorter in the front and longer in the back, with a height difference of 1cm to 3cm between the front and back of the leg opening; and the waistband piece has a 2cm to 5cm shrinkage structure at its upper edge.

[0009] In some embodiments, the front trouser piece undergoes quantitative stretching and shaping, with specific process parameters including: stretching the inner and outer sides of the calf circumference of the front trouser piece by 0.5cm to 1cm, shrinking the hip circumference of the front trouser piece by 0.3cm to 0.8cm, and shrinking the area where the crotch meets the thigh by 0.3cm to 0.6cm, 6cm to 10cm above the crotch bottom; after folding along the front center seam and correcting the left and right stretching amounts to be consistent, a second stretching and second shrinking shaping are completed, and the entire front crotch piece undergoes shrinking and shaping treatment.

[0010] In some embodiments, the back trouser piece undergoes quantitative stretching and shaping, with specific process parameters including: stretching the inner and outer sides of the calf circumference of the back trouser piece by 0.5cm to 1cm, shrinking the hip circumference area of ​​the back seam by 0.3cm to 0.8cm, stretching the area from the knee to the crotch by 1cm to 1.5cm, and stretching the inner curve area of ​​the back wave by 0.6cm to 1.2cm; after folding and ironing along the back center seam and correcting the consistency of the stretching on both sides, a second stretching and shaping is performed, with a second stretching amount of 0.5cm to 1cm.

[0011] In some embodiments, the back panel further includes the following shaping parameters: the area 7cm to 8cm below the knee of the back panel is reduced by 0.2cm to 0.7cm, the area from the knee to the crotch is stretched by 1cm to 1.5cm, and the overall hip circumference of the back panel is reduced by 0.4cm to 1cm.

[0012] In some embodiments, the inner side of the leg opening of the trousers is provided with a reinforcing structure, which is a fabric patch or webbing with a width of 1cm to 3cm, and the distance between the fabric patch or webbing and the leg opening fold is 0.1cm to 0.3cm.

[0013] In some embodiments, the partitioned and fixed-point, numerically quantified ironing process includes a partitioning step, which includes: dividing the front and back pant pieces into the calf area, hip area, crotch-leg connection area, back wave area, and knee area and fixing the processing points.

[0014] In some embodiments, the partitioned fixed-point, numerical quantization reduction and ironing process includes a shaping step, which includes: reducing and ironing each fixed processing point according to the corresponding value, so that the flat piece is plastically shaped into a three-dimensional curved surface.

[0015] In some embodiments, the front trouser piece shaping process includes: first, performing initial pulling, shrinking and ironing on each area; then, folding along the center front seam to calibrate the shaping amount; and finally, performing a secondary shaping operation.

[0016] In some embodiments, the forming process of the upper edge of the waistband includes: taking a straight suit waistband, ironing and shaping it as a whole, and then shrinking the upper edge of the waistband as a whole to obtain a shrunken upper edge structure of the waistband.

[0017] In some embodiments, the forming process of the trouser leg opening includes: assembling and correcting the front and back trouser pieces after they have been straightened, adjusting them to form a height difference structure with the front shorter than the back, and then sewing a fabric patch or webbing to the inside of the leg opening to complete the forming of the trouser leg opening.

[0018] The above-mentioned technical solutions adopted in the embodiments of this application can achieve the following beneficial effects: The high-quality trousers based on the quantitative shaping process in the embodiments of this application have a front hem concave by 0.5cm to 1.5cm and a back hem convex by 0.5cm to 1.5cm. The concave front hem can eliminate the accumulation of excess fabric at the front of the trouser leg, and the convex back hem can make up for the excess length at the back, preventing the back hem from riding up and exposing the ankle when walking, and the trouser leg has a neat and regular drape. The high-quality trousers based on the quantitative shaping process in this embodiment feature front and back panels that have undergone zoned, fixed-point numerical quantitative shaping and ironing to form a three-dimensional curved structure. This eliminates the need for traditional, non-standard manual shaping, ensuring uniform and controllable shrinkage and stretching at each shaping point. The flat pattern is transformed into a three-dimensional design that matches the curves of the human hips, thighs, knees, and calves. Standardized quantitative parameters enable mass production, ensuring consistent patterns across different batches and overcoming the drawbacks of large variations and poor stability in traditional manual shaping. Furthermore, reasonable allowances for movement are provided in the crotch and knee areas after shaping, reducing the tightness of the trousers when bending the knees or raising the legs. The high-quality trousers based on the quantitative shaping process in this embodiment also feature a shorter front and longer back hem, with a height difference of 1cm to 3cm. This matches the height difference of the feet when standing, preventing wrinkles at the front hem and ensuring sufficient back length. When paired with leather shoes, the overall shape is sharp and improves the fit of the garment. The high-quality trousers based on the quantitative shrinkage process in this application embodiment have a 2cm to 5cm shrinkage structure at the top edge of the waistband. After the top edge of the waistband is shaped and sculpted, it matches the contour of the human waist, eliminating the problem of a straight waistband easily opening outwards. The waist fit is better, and the trousers are flat and not easy to curl up. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is the main cut piece for regular dress trousers;

[0021] Figure 2 This is a schematic diagram of the front and back trouser pieces of high-quality trousers based on the quantitative reduction process in this application embodiment (corresponding to the human leg shape respectively).

[0022] Figure 3 This is a schematic diagram of the shaping of the front panel of high-quality trousers based on the quantitative shaping process in an embodiment of this application.

[0023] Figure 4 This is a schematic diagram of the back panel of a high-quality trousers based on a quantitative shaping process in an embodiment of this application.

[0024] Figure 5 This is a schematic diagram showing the shape and detail design of the front and back trouser panels and the leg openings of high-quality trousers based on the quantitative stretching process in this application embodiment.

[0025] Figure 6 This is a schematic diagram of the waistband reduction of high-quality trousers based on the quantitative reduction process in the embodiments of this application. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0028] like Figure 1 The image shows the main fabric pieces of a standard pair of trousers, which are: Figure 1 The middle 101 is the front panel of the pants. Figure 1 102 is the back panel of the pants. Figure 1 103 is the waistband piece.

[0029] Figure 2 The front and back panels of the trousers in this embodiment correspond to the shape of the human leg, as shown below. Figure 2 201 is the front panel of the pants. Figure 2 202 back trouser piece, Figure 2Human body shape characteristics of Chinese 203. Figure 2 The center of the hem of the 204 stainless steel front trousers is recessed by 0.5-1.5cm to reduce the amount of fabric bunching at the hem. Figure 2 The center of the hem of the 205 trousers is designed to protrude outward by 0.5-1.5cm to avoid the hem being too short, making the wearer look more gentlemanly and preventing the ankles from being exposed.

[0030] This application provides a high-quality trousers based on a quantitative shaping process. A schematic diagram of the high-quality trousers based on this process is provided, including a front trouser piece, a back trouser piece, and a waistband. The front trouser piece has a concave structure at the center of the leg opening, with a concavity of 0.5cm to 1.5cm; the back trouser piece has a convex structure at the center of the leg opening, with a convexity of 0.5cm to 1.5cm. The front and back trouser pieces are three-dimensional curved structures obtained by plastically shaping flat pieces using a zoned, fixed-point, numerically quantitative shaping and ironing process. The front and back trouser pieces are joined to form a leg opening structure that is shorter in the front and longer in the back, with a height difference of 1cm to 3cm between the front and back of the leg opening. The waistband has a 2cm to 5cm shrinkage structure at the top edge.

[0031] In this embodiment, unlike the traditional method of directly sewing together plain fabric pieces for trousers, this application uses a zoned, fixed-point, numerically quantified shrinking and stretching ironing process to plastically process the front and back trouser pieces. The original two-dimensional flat trouser pieces are subjected to controllable plastic deformation through wet heat ironing, quantitative shrinking and stretching, so that the front and back trouser pieces are formed into a three-dimensional curved surface structure that matches the natural curve of the human leg. This effectively overcomes the problems of the traditional flat fabric pieces being flat, having poor fit to the human body, and being prone to tightness during limb movement.

[0032] Specifically, the center of the hem of the front trouser piece has a concave structure, with the concavity controlled between 0.5cm and 1.5cm. This concave structure eliminates excess fabric buildup at the front hem of traditional trousers, preventing wrinkles and a bulky appearance when standing or walking. Correspondingly, the center of the hem of the back trouser piece has a convex structure, also with a convexity of 0.5cm to 1.5cm. This convexity compensates for excess fabric length at the back, effectively preventing the back hem from riding up and exposing the ankle during walking, ensuring a straight and neat drape.

[0033] Furthermore, the front and back trouser pieces, after being shaped and molded, are stitched together to form a differentiated hem structure that is shorter in the front and longer in the back. The height difference between the front and back of the hem is controlled between 1cm and 3cm. This structure adapts to the physiological shape of the human body when standing, with the forefoot pointing forward and the heel sinking down, so that the hem of the trousers can naturally fit the lines of the shoe upper. The overall look is straight and elegant, taking into account both the shaping effect and the fit.

[0034] Meanwhile, this embodiment optimizes the shaping of the upper edge of the waistband by setting a 2cm to 5cm shrinkage structure at the upper edge of the waistband. Through shrinkage ironing, the waistband fabric is appropriately shrunk to match the natural inward curve of the human waist. This solves the defects of traditional straight waistbands, such as easy opening, curling, and loose fit, making the waistband fit more closely and evenly with the human waist, improving the comfort of wearing the waist and the overall refinement of the garment.

[0035] The high-quality trousers based on the quantitative reduction process in this application embodiment feature an optimized design on the overall cut piece basis. The trousers cut piece consists of three core components: the front trouser piece, the back trouser piece, and the waistband piece. Compared with conventional straight cut pieces, the basic shape of the hem is specifically optimized to adapt to the natural standing posture and leg shape of the human body: the center of the hem of the front trouser piece is set with a concave structure, with the concavity controlled at 0.5-1.5cm, effectively eliminating excess bulk at the front hem and avoiding wrinkles and bulkiness in the trousers; the center of the hem of the back trouser piece is set with a convex structure, with the convexity controlled at 0.5-1.5cm, solving the problem of the traditional trousers having a short back hem and easily exposing the ankle, thus improving the neatness and gentlemanly texture of the garment.

[0036] For example, the front panel is pulled back.

[0037] Figure 3 The 301 designation features a 0.5-1cm widening of the inner and outer sides of the calf area on the front panel, which better conforms to the shape of the human calf and makes the pants more ergonomic. Figure 3 The "302" designation refers to a reduction of 0.3-0.8cm in the hip area of ​​the front panel of the pants, resulting in a larger front hip and abdomen area for a more natural fit. Figure 3 The 303 design features a 0.3-0.6cm reduction in width at the front crotch and thigh area (6-10cm), increasing the volume of the front crotch and creating a more three-dimensional look. Figure 3 304 stainless steel front center seam, fold the trousers in half along the front center seam; Figure 3 After folding the 305mm material in half, check if the pulling amount on the left and right sides is consistent, and then perform a second pulling process to set the shape. Figure 3 The pants undergo secondary shrinkage and shaping at 306 points, based on the shape characteristics of the human lower leg, to make them fit the body better. Figure 3 The 307 model features a retracted windshield panel, increasing its capacity and creating a more three-dimensional effect between the windshield and the thigh area.

[0038] For example, the back panel of the pants is pulled back.

[0039] Figure 4 The 401 back panel of the pants has a 0.5-1cm widening at the inner and outer sides of the calf circumference, which better conforms to the shape of the human calf and makes the pants fit the human body better. Figure 4 The 402 model features a shrinkage treatment at the hip line on the back seam, with a shrinkage amount of 0.3-0.8cm, which will make the hip area of ​​the pants more three-dimensional. Figure 4The 403 model features a 1-1.5cm widening at the lower back crotch, between the knee and the bottom of the crotch. This widening is done to ensure a better fit to the body, taking into account the shape of the thigh. Figure 4 The 405 model features a pull-out design at the inward curve of the back wave, with a pull-out amount of approximately 0.6-1.2cm. This pull-out process increases the capacity of the back crotch of the pants, reduces chafing, increases the range of motion of the buttocks, and gives the pants a more three-dimensional feel. Figure 4 For the 406 back center seam, fold the pants in half along the back center seam and press the back center seam. Figure 4 After folding the 407 in half, check if the amount of pulling on the left and right sides is consistent, and perform a second pulling process to fix the shape, with a pulling amount of 0.5-1cm. Figure 4 In section 408, a reduction treatment was performed on the lower leg, 7-8 cm in diameter, with a reduction amount of 0.2-0.7 cm. This reduction treatment was performed mainly based on the morphological characteristics of the human knee area. Figure 4 The 409 model features a 1-1.5cm widening technique from the knee to the crotch area. This design optimizes the fit by conforming to the shape of the human thigh. Figure 4 The 410 size has been reduced in the hip circumference by 0.4~1cm. After the reduction, the pants can better conform to the curve of the human hip, making the hips more three-dimensional and the back waves more natural and transparent.

[0040] For example, the front and back trouser panels are folded back and the shape and details of the leg openings are designed.

[0041] like Figure 5 After the front and back trouser pieces, which have undergone a shaping process, are joined together, the shape of the trousers closely matches the form of the human leg, resulting in a more comfortable fit. The shaping process plays an indispensable role in the production of trousers; it makes the garment more three-dimensional and conforms better to the human body, meeting the body's shape requirements. Figure 5 501 in the text refers to the front panel of the pants. Figure 5 502 in the text refers to the back panel of the pants. Figure 5 The 503 trouser leg opening planar shape, Figure 5 The 504 in the text refers to the leather shoes being worn. Figure 5 The 505 trousers feature a hem designed to fit the human body shape, with the hem being shorter in the front and longer in the back, a difference of 1-3cm. This design better conforms to the human body's shape, preventing excess fabric from bunching up at the front and keeping the ankles from showing at the back, making the wearer look more upright, both well-fitting and elegant. Figure 5 For the 506 hem treatment: Add a 1-3cm wide, 1-3cm wide, fabric-covered strip or suitable webbing to the inside of the hem, 0.1-0.3cm from the hem fold. Figure 5The 507 designation refers to the webbing that, after being sewn on, is folded inside out, positioned just below the hem of the pants. This does not affect the appearance and increases the durability of the hem and shoes, preventing the front hem from wearing out and extending the lifespan of the pants.

[0042] For example, the waistband is tucked in.

[0043] Figure 6 The 601 in the text refers to the waist of a regular trouser suit. Figure 6 The 602 in the text refers to the waistband of a regular suit trousers. This refers to the effect after pressing and straightening the waistband, resulting in a flat, straight waistline. Figure 6 The 603 in the design refers to a standard waistband for trousers and suits. After lining the waistband, the top edge is shrunk by 2-5cm, resulting in a more snug fit around the waist. This prevents the top edge from opening up and makes the garment more aesthetically pleasing and comfortable.

[0044] The high-quality trousers based on the quantitative shrinkage process in this embodiment employ a quantitative shrinkage process for the front trouser piece. This process targets the physiological curves of the human abdomen, hips, crotch, and calves, precisely shrinking, stretching, and shaping key areas of the front trouser piece. Specific process parameters are as follows: Calf circumference treatment: The inner and outer sides of the calf circumference of the front trouser piece are uniformly stretched by 0.5-1cm to conform to the natural shape of the human calf and eliminate any tightness in the trousers; Hip circumference treatment: The hip circumference of the front trouser piece is shrunk by 0.3-0.8cm to allow sufficient room for movement in the hips and abdomen, ensuring... The pants should fit naturally and comfortably when standing or bending over. The crotch area is designed to be shrunk by 0.3-0.6cm in the 6-10cm area above the crotch, expanding the crotch space and optimizing the crotch shape to prevent constriction during prolonged sitting or knee bending. Symmetrical shaping is achieved by folding the pants along the center front seam to check the consistency of the stretch on both sides, completing a second stretching and shrinking process to ensure symmetry and a neat shape. The entire crotch area is shrunk to further optimize the three-dimensional structure, enhancing the connection between the crotch and thigh, and improving fit and comfort.

[0045] The high-quality trousers based on the quantitative stretching process in this application embodiment employ a quantitative stretching process for the back trouser piece. Combining the three-dimensional curves of the human buttocks, back thighs, knees, and calves, the process focuses on optimizing the back crotch capacity, the three-dimensionality of the buttocks, and the leg movement space. Multiple areas undergo layered quantitative processing, with specific process parameters as follows: Calf circumference processing: The inner and outer sides of the calf circumference of the back trouser piece are stretched by 0.5-1cm to adapt to the lines of the human calf and avoid a tight fit; Hip line processing: The hip line area at the back seam is reduced by 0.3-0.8cm to lift and refine the hip line, creating a three-dimensional hip shape and preventing a loose and bulky hip shape; Crotch area processing: The area from the knee to the bottom of the crotch is stretched by 1-1.5cm to adapt to the shape of the human thigh muscles, significantly improving the freedom of movement when bending the knee and lifting the leg; Back wave inward curve processing: The back wave inward curve area is stretched by 0.6-1.2cm to effectively expand the back crotch capacity. The design thoroughly addresses the issues of crotch tightness during walking and squatting, increasing hip mobility and enhancing the three-dimensional, breathable feel of the back crotch. Back center seam shaping: The pants are folded in half along the back center seam, pressed flat, and the left and right stretches are checked. A second stretching is performed to shape the pants, with the stretch controlled at 0.5-1cm to ensure symmetrical and straightness. Lower leg treatment: The area 7-8cm below the knee is reduced by 0.2-0.7cm to fit the natural bending shape of the knee, preventing the pants from bunching up and feeling tight in the lower leg. Crotch-knee connection area treatment: The area from the knee to the crotch is stretched again by 1-1.5cm to further adapt to the movement of the thigh and improve flexibility. Hip refinement: The overall hip circumference is reduced by 0.4-1cm to optimize the hip curve, making the back wave line natural and smooth, and the fit more closely conforming to the human hip shape.

[0046] The high-quality trousers based on the quantitative stretching process in this application embodiment employ trouser panel splicing and refined hem design. After the front and back trouser panels, which have undergone quantitative stretching, are spliced ​​together, the overall trouser body perfectly conforms to the three-dimensional shape of the human leg, with a neat shape and high fit. At the same time, the hem structure and abrasion resistance are specifically optimized: Hem height difference design: A three-dimensional hem structure with a shorter front and longer back is adopted, and the height difference between the front and back hems is controlled within 1-3cm, completely eliminating the bulkiness of the front hem and preventing the ankle from being exposed at the back hem, resulting in a crisp and elegant look suitable for wearing with dress shoes; Abrasion-resistant reinforcement design for the hem: A self-fabric patch or special webbing is added to the inside of the hem, with a webbing width of 1-3cm and a distance of 0.1-0.3cm from the hem fold; The reinforcement structure is hidden inside the trouser leg, without affecting the appearance of the garment, and can effectively improve the abrasion resistance of the hem, prevent wear and tear at the front hem, and extend the service life of the trousers.

[0047] The high-quality trousers based on the quantitative shrinkage process in this embodiment employ a waistband shrinkage optimization process. Addressing the issues of conventional trousers having a straight waistband, being prone to opening when worn, and having poor fit, the waistband undergoes a quantitative shrinkage treatment: after the conventional straight waistband is pressed and shaped, it is shrunk by 2-5cm at the top edge, making the waistband conform to the natural curve of the human waist, eliminating waist gaps, preventing the waistband from opening or loosening when worn, and improving the waistband fit and overall aesthetics.

[0048] In one embodiment of this application, the front trouser piece undergoes quantitative stretching and shaping. Specific process parameters include: stretching the inner and outer sides of the calf circumference of the front trouser piece by 0.5cm to 1cm, shrinking the hip circumference of the front trouser piece by 0.3cm to 0.8cm, and shrinking the area connecting the crotch and thigh by 0.3cm to 0.6cm, 6cm to 10cm above the crotch bottom; after folding along the front center seam and correcting the left and right stretching amounts to be consistent, a second stretching and second shrinking shaping are completed, and the entire front crotch piece undergoes shrinking and shaping treatment.

[0049] The front panel is manufactured using a zoned, quantitative shaping process, with precise and controllable parameters for each area. Specific processing parameters are as follows: the inner and outer calf circumference of the front panel is evenly stretched by 0.5cm to 1cm to accommodate the outward curve of the calf; the hip circumference is reduced by 0.3cm to 0.8cm to gather excess fabric and improve fit; the area connecting the front crotch and thigh, within 6cm to 10cm above the crotch, is reduced by 0.3cm to 0.6cm to increase crotch space and prevent tightness. During processing, the above areas are first initially stretched, ironed, and shaped. Then, the front panel is folded along the center front seam, and the stretching and reduction on both sides are precisely adjusted to ensure complete consistency. After adjustment, a second stretching and reduction are performed for overall shaping. Finally, the entire front crotch panel undergoes a reduction and shaping process to further optimize its three-dimensional structure and ensure a symmetrical and regular overall pattern.

[0050] In one embodiment of this application, the back trouser piece undergoes quantitative stretching and shaping. Specific process parameters include: stretching the inner and outer sides of the calf circumference of the back trouser piece by 0.5cm to 1cm, shrinking the hip circumference area of ​​the back seam by 0.3cm to 0.8cm, stretching the area from the knee to the crotch by 1cm to 1.5cm, and stretching the inner curve area of ​​the back wave by 0.6cm to 1.2cm; after folding and ironing along the back center seam and correcting the consistency of the stretching on both sides, a second stretching and shaping is performed, with a second stretching amount of 0.5cm to 1cm.

[0051] The back panel is specially shaped to fit the shape of the buttocks, crotch, and back of the calf. Specific process parameters are as follows: the back panel is evenly stretched 0.5cm to 1cm along the inner and outer sides of the calf circumference to conform to the back line of the calf; the hip area along the back seam is reduced by 0.3cm to 0.8cm to tighten the side seam allowance and create a three-dimensional hip shape; the vertical area from the knee to the crotch is stretched by 1cm to 1.5cm to allow for leg flexion and extension; the inward curve area of ​​the back wave is stretched by 0.6cm to 1.2cm to optimize the back crotch curvature and reduce crotch tightness. The processing flow is as follows: after initial stretching and ironing of each area of ​​the finished panel, it is folded and ironed flat along the back center seam to ensure consistency of the shaping parameters on both sides and eliminate left and right pattern deviations. Finally, the entire back panel is stretched a second time to set the shape, with the second stretch controlled at 0.5cm to 1cm to ensure the stability and symmetry of the back panel pattern.

[0052] The implementation steps of the zoned, fixed-point, numerically quantified ironing process in this embodiment are as follows:

[0053] The first step is the zoning process: Divide the front and back pant pieces into five fixed processing points: calf circumference area, hip circumference area, crotch-leg junction area, back hem area, and knee area. Mark the boundaries of each area on the surface of the cut pieces to facilitate standardized positioning and ironing.

[0054] The second step is the shaping step: For each marked point, shrinking ironing and stretching ironing are performed according to preset values. The fabric's wet heat plasticity is used to make the flat cut piece undergo controllable deformation, forming a three-dimensional curved cut piece that fits the curve of the human leg.

[0055] The complete shaping process for the front trouser piece is as follows: First, the calf area, hip area, and the area connecting the front crotch and thigh are initially stretched, shrunk, and ironed. After ironing, the cut piece is folded along the front center seam, and the shaping dimensions on both sides are compared to ensure that the stretching amount on both sides is consistent. After the correction is completed, a second stretching and shrunk shaping process is performed, and the entire front crotch area is shrunk and shaped.

[0056] Quantitative process parameters for each area of ​​the front trousers: the inner and outer sides of the calf circumference are uniformly stretched by 0.7cm; the hip circumference is shrunk by 0.5cm; the area where the front crotch connects to the thigh 8cm above the crotch is shrunk by 0.4cm.

[0057] The quantitative shaping parameters for the back trousers are as follows: 0.7cm for the inner and outer sides of the calf circumference; 0.5cm for the hip area along the back seam; 1.2cm for the section from the knee to the crotch; and 0.9cm for the inward curve area of ​​the back wave. After the initial shaping of the back trousers, fold and iron them flat along the back center seam. After verifying that the stretching is consistent on both sides, a second stretching and shaping is performed, with a second stretching amount of 0.7cm.

[0058] Based on the basic shaping of the back pant panel, additional refined shaping parameters are added: the area 7.5cm below the knee is reduced by 0.4cm; the area from the knee to the crotch is widened by 1.2cm; and the overall hip circumference of the back pant panel is reduced by 0.6cm.

[0059] The process for shaping the upper edge of the waistband: Take a regular straight waistband from a suit, first heat-press and humidify the whole piece to remove wrinkles from the fabric, then shrink and iron the entire upper edge of the waistband to form a shrunken upper edge structure.

[0060] The process of forming the cuffs of trousers: Align and assemble all the front and back trouser pieces that have been processed, check the overall pattern, and adjust the length of the cuffs to form a height difference structure with the front shorter and the back longer; then sew a reinforcement structure on the inside of the cuffs. The reinforcement structure uses a 2cm wide self-fabric patch, leaving a 0.2cm gap between the patch and the cuff fold. After sewing and fixing, the cuff processing is completed.

[0061] In one embodiment of this application, the back pant piece further includes the following shaping parameters: the area 7cm to 8cm below the knee of the back pant piece is shrunk by 0.2cm to 0.7cm, the area from the knee to the crotch is stretched by 1cm to 1.5cm, and the overall hip circumference of the back pant piece is shrunk by 0.4cm to 1cm.

[0062] This embodiment further refines the shaping parameters of the back pant piece to achieve precise fit at the knee, crotch, and buttocks. Specifically, the parameters are: the straight transition area 7-8cm below the knee of the back pant piece is reduced by 0.2-0.7cm to smooth out excess bulk below the knee and prevent wrinkling; the large range of motion from the knee to the crotch is further extended by 1-1.5cm to enhance freedom of movement when lifting the leg and bending the knee; the overall hip circumference of the back pant piece is reduced by 0.4-1cm to precisely conform to the outward curve of the buttocks, optimizing the three-dimensional shape of the buttocks and making the overall shaping effect of the back pant piece more closely match the dynamic and static form of the lower limbs.

[0063] In one embodiment of this application, the inner side of the leg opening of the trousers is provided with a reinforcing structure, which is a fabric patch or webbing with a width of 1cm to 3cm, and the distance between the fabric patch or webbing and the leg opening fold is 0.1cm to 0.3cm.

[0064] A reinforced structure is installed on the inside of the hem of the trousers after shaping and shaping to improve the hem's abrasion resistance and structural stability. The reinforcement structure uses a 1cm-3cm wide fabric patch or abrasion-resistant webbing, sewn tightly to the inside of the hem. A uniform gap of 0.1cm-0.3cm is left between the fabric patch or webbing and the hem fold, ensuring complete coverage of the friction area at the hem, preventing long-term wear and tear from friction with the shoe upper and extending the trousers' lifespan. At the same time, it remains concealed, maintaining the overall smoothness of the trousers' appearance and ensuring both aesthetics and practicality.

[0065] In one embodiment of this application, the partitioned and fixed-point, numerically quantified ironing process includes a partitioning step, which involves dividing the front and back pant pieces into the calf circumference area, hip circumference area, crotch-leg connection area, back wave area, and knee area and fixing the processing points.

[0066] Unlike traditional irregular manual shaping, this process adopts a fixed-point, zoned, standardized processing method. Before processing, the flat front and back trouser pieces are pre-divided into five core, fixed processing points: the calf area, hip area, crotch-leg junction area, hem area, and knee area. The boundaries of each area are marked and located, clarifying the shaping processing type and shaping function of each area. This transforms traditional experience-based processing into fixed-point, standardized processing, providing a precise processing benchmark for subsequent quantitative shaping.

[0067] In one embodiment of this application, the partitioned fixed-point, numerical quantization reduction and ironing process includes a shaping step comprising: reducing and ironing each fixed processing point according to the corresponding value, so that the flat cut piece is plastically shaped into a three-dimensional curved surface.

[0068] This embodiment specifically defines the shaping steps of the quantitative shaping process. After completing the trouser piece segmentation and positioning, targeted shrinking and stretching ironing operations are carried out at each fixed processing point in the calf area, hip area, crotch-leg junction area, heel area, and below-knee area, strictly according to preset value ranges. Utilizing the fabric's wet-heat plasticity, the fibers in each area are stretched and contracted in a controllable manner, causing differentiated and controllable plastic deformation of the originally two-dimensional trouser piece, ultimately forming a three-dimensional curved trouser piece structure that conforms to the multi-dimensional curves of the human hips, thighs, knees, and calves.

[0069] In one embodiment of this application, the front trouser piece shaping process includes: firstly, performing initial pulling, shrinking and ironing on each area, then folding along the center front seam to calibrate the shaping amount, and finally completing the secondary shaping operation.

[0070] The process employs a three-stage standardized procedure: initial shaping, calibration and correction, and secondary setting. First, the front trouser panels are initially stretched, shrunk, and ironed at various points to achieve basic shaping. Then, the panels are folded along the center front seam to precisely calibrate the shaping amount and shrunk dimensions on both sides, ensuring symmetry and correcting any deviations caused by a single ironing operation. Finally, a second shaping operation is performed to solidify the fabric's shape, completely resolving the problems of weak shaping, asymmetry, and unstable patterns inherent in traditional manual shaping, thus ensuring consistent patterns in mass production.

[0071] In one embodiment of this application, the forming process of the upper edge of the waistband includes: taking a straight suit waistband, ironing and shaping it as a whole, and then shrinking the upper edge of the waistband as a whole to obtain a shrunken upper edge structure of the waistband.

[0072] The waistband uses a standard straight suit waistband as its base material. First, the entire waistband is pressed and shaped to smooth the fabric, eliminate wrinkles, and ensure the basic flatness of the waistband. On this basis, the entire upper section of the waistband is evenly compressed and ironed. Through wet heat molding, the waistband fibers are evenly shrunk, ultimately forming a compressed upper waistband structure that conforms to the curve of the human waist. This effectively improves the defects of traditional straight waistbands, such as easy opening, poor fit, and curling edges, and enhances the fit and flatness of the waistband.

[0073] In one embodiment of this application, the forming process of the trouser leg opening includes: assembling and correcting the pattern of the front and back trouser pieces after they have been straightened, adjusting them to form a height difference structure with the front shorter and the back longer, and then sewing a fabric patch or webbing to the inside of the leg opening to complete the forming of the trouser leg opening.

[0074] After the front and back trouser pieces have been divided, quantified, stretched, shaped, and cooled, the front and back trouser pieces are aligned and spliced ​​together. The overall pattern lines are checked, and the leg opening dimensions are fine-tuned to create a stable height difference structure where the front is shorter than the back. After the pattern is checked, a fabric patch or webbing is sewn to the inside of the leg opening at a predetermined position to reinforce the structure. The leg opening folds are then neatly arranged, completing the overall shaping of the trouser leg opening. The final result is a high-quality trouser leg opening structure that is crisp, durable, and fits the body well.

[0075] This application's embodiments abandon the traditional single-plane cutting mode and adopt the core process of front and back trouser pieces with zoned and fixed points, and full-process quantitative shaping and pulling. Through precise numerical shaping and pulling, the flat trouser pieces are shaped into a three-dimensional curved structure that fits the human leg shape. At the same time, the crotch capacity, leg opening shape, and waistband structural details are optimized to solve the problems of poor fit, restricted movement, bulky pattern, and unstable quality of traditional trousers. Fixed parameters are used throughout the process to replace experience-based manual operation, achieving standardized mass production.

[0076] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A high-quality pair of trousers based on a quantitative shaping process, comprising a front panel, a back panel, and a waistband panel, characterized in that: The front trouser piece has a concave structure at the center of the leg opening, with a concavity of 0.5cm to 1.5cm; the back trouser piece has a convex structure at the center of the leg opening, with a convexity of 0.5cm to 1.5cm; the front and back trouser pieces are three-dimensional curved structures obtained by plastically shaping flat pieces using a zoned, fixed-point, numerically quantified, and compressed ironing process; the front and back trouser pieces are joined together to form a leg opening structure that is shorter in the front and longer in the back, with a height difference of 1cm to 3cm between the front and back of the leg opening; the waistband has a 2cm to 5cm compression structure at the top edge.

2. The high-quality trousers according to claim 1, characterized in that: The front trouser piece undergoes quantitative stretching and shaping, with specific process parameters including: stretching the inner and outer sides of the calf circumference of the front trouser piece by 0.5cm to 1cm, shrinking the hip circumference of the front trouser piece by 0.3cm to 0.8cm, and shrinking the area where the crotch meets the thigh by 0.3cm to 0.6cm, 6cm to 10cm above the crotch bottom; after folding along the front center seam and correcting the left and right stretching to be consistent, a second stretching and shrinking shaping is completed, and the entire front crotch piece undergoes shrinking and shaping treatment.

3. The high-quality trousers according to claim 1, characterized in that: The back trousers are quantified and stretched to form a plastic shape. The specific process parameters include: stretching the inner and outer sides of the calf circumference of the back trousers by 0.5cm to 1cm, shrinking the hip circumference area of ​​the back seam by 0.3cm to 0.8cm, stretching the area from the knee to the crotch by 1cm to 1.5cm, and stretching the inner curve area of ​​the back wave by 0.6cm to 1.2cm; after folding and ironing along the back center seam and correcting the left and right stretching amounts to be consistent, a second stretching and shaping is performed, with a second stretching amount of 0.5cm to 1cm.

4. The high-quality trousers according to claim 3, characterized in that: The back panel also includes the following shaping parameters: the area 7cm to 8cm below the knee of the back panel is reduced by 0.2cm to 0.7cm, the area from the knee to the crotch is stretched by 1cm to 1.5cm, and the overall hip circumference of the back panel is reduced by 0.4cm to 1cm.

5. The high-quality trousers according to claim 1, characterized in that: The trousers have a reinforcing structure on the inside of the leg opening. The reinforcing structure is a fabric patch or webbing with a width of 1cm to 3cm. The distance between the fabric patch or webbing and the leg opening fold is 0.1cm to 0.3cm.

6. The high-quality trousers according to claim 1, characterized in that: The zoning and point-fixed, numerical quantification and ironing process includes a zoning step, which involves dividing the front and back pant pieces into the calf area, hip area, crotch-leg junction area, back wave area, and knee area and fixing the processing points.

7. The high-quality trousers according to claim 6, characterized in that: The partitioned, fixed-point, numerically quantified shrinking and ironing process includes a shaping step: shrinking and ironing each fixed processing point according to the corresponding value, so that the flat piece is plastically shaped into a three-dimensional curved surface.

8. The high-quality trousers according to claim 1, characterized in that: The process of shaping the front trouser piece includes: first, performing initial stretching, shrinking and ironing on each area; then, folding along the center front seam to calibrate the shaping amount; and finally, performing a secondary shaping operation.

9. The high-quality trousers according to claim 1, characterized in that: The forming process of the upper edge of the waistband includes: taking a straight suit waistband, ironing and shaping it as a whole, and then shrinking the upper edge of the waistband as a whole to obtain the shrunken upper edge structure of the waistband.

10. The high-quality trousers according to claim 1, characterized in that: The forming process of the trouser leg opening includes: piecing together the front and back trouser pieces after they have been straightened and aligned to form a height difference structure with the front shorter than the back; then sewing a fabric patch or webbing onto the inside of the leg opening to complete the forming of the trouser leg opening.

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