Arc-shaped trouser waist sewing process template and using method thereof
By using a multi-layered board structure and precise marking lines in the curved waistband sewing process template, the problems of dimensional deviation and substandard shape in traditional sewing are solved, achieving efficient and precise production of curved waistbands.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-24
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional curved waistband sewing process requires multiple steps, resulting in size deviations and substandard shapes, making it impossible to accurately achieve design requirements.
The curved waistband sewing template, including a multi-layer board structure and precise marking lines, forms a stable sewing channel, enabling rapid and accurate positioning and synchronous sewing of the cut pieces, lining, trouser loops, and trouser body.
It improves the consistency and accuracy of mass-produced products, reduces process connection time and manual transfer costs, and ensures that the design size and shape of the curved waistband are accurately implemented.
Smart Images
Figure CN121802633A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of textile and apparel sewing technology application, and relates to a curved waistband sewing process template and its usage method. Background Technology
[0002] The curved waistband stitching technique is commonly seen in high-end women's bottoms, especially trousers. The curved waistband fits the curve of the human waist better, improving wearing comfort and aesthetics.
[0003] Besides requiring high-standard design, pattern making, and cutting during the design, pattern making, and cutting stages, the control of the sewing process is also crucial for curved waistbands. Controlling the sewing process not only ensures a better fit to the human waistline, improving comfort and aesthetics, but also effectively supports the curved waistband design by providing corrections at various stages of production to achieve the final product's desired shape.
[0004] The main steps in producing traditional curved waistbands include sewing the outer and lining fabric pieces together, attaching the waistband loops, and finally attaching the waistband. Traditionally, a paper pattern is placed on top of the curved waistband fabric pieces for comparison, and marking lines are used to assist in the sewing process. Alternatively, the pattern is laid out directly after the seam allowance is prepared, and the pieces are cut and sewn. Traditional curved waistband production requires multiple workers. The curved waistband is pre-set with high-temperature fusible interfacing, and then the multiple pieces composing the curved waistband are sewn together, marking lines are drawn, the waistband is sewn together, the waistband loops are attached, and finally, the waistband is attached. The process of sewing curved waistbands requires multiple personnel and multiple operational steps, which makes it impossible for traditional curved waistbands to meet the size requirements of the design and pattern making during sewing production. Errors caused by previous processes during sewing production also prevent the finished curved waistbands from achieving the desired curved waistband shape. Summary of the Invention
[0005] Purpose of the invention: The purpose of this invention is to provide a template for sewing an arc-shaped waistband and its method of use.
[0006] Technical solution: The present invention provides a template for sewing an arc-shaped waistband, comprising a main bottom plate, a main middle plate, a first main upper plate, and a second main upper plate; the main middle plate and the first main upper plate are sequentially folded and connected above the main bottom plate, and the second main upper plate is folded and connected below the main bottom plate. The bottom plate of the main body is provided with a first sewing groove and a second sewing groove. The first sewing groove is an arc-shaped structure, and the second sewing groove is located below the first sewing groove. The arc of the second sewing groove is the same as that of the first sewing groove. An arc-shaped groove is provided on the middle layer plate of the main body. The upper edge of the arc-shaped groove is aligned with the upper edge of the first sewing groove, and the lower edge of the arc-shaped groove is aligned with the lower edge of the second sewing groove. A third sewing groove is provided below the first main upper plate, and a fourth sewing groove is provided above the second main upper plate. The third sewing groove is aligned with the upper edge of the arc groove of the main middle plate and the edge of the first sewing groove of the main bottom plate; the fourth sewing groove is aligned with the lower edge of the arc groove of the main middle plate and the edge of the second sewing groove of the main bottom plate, forming a vertically continuous sewing channel.
[0007] Furthermore, the first main body upper plate is configured as three pieces, from left to right: the left first main body upper plate, the middle first main body upper plate, and the right first main body upper plate.
[0008] Furthermore, two auxiliary adhesive fixing marking lines for the second upper body plate are provided below the bottom plate of the main body, and the left and right sides of the second upper body plate are aligned with the auxiliary adhesive fixing marking lines for the second upper body plate.
[0009] Furthermore, a bottom plate marking line is provided on the main body bottom plate, the bottom plate marking line including the position line of the arc waistband splicing piece fabric and the placement alignment marking line of the arc waistband fabric splicing piece.
[0010] Furthermore, the main body middle layer plate is provided with middle layer plate marking lines, which include the position lines of the curved waistband lining, the trouser loop placement marking lines, and the trouser body lining alignment marking lines.
[0011] Furthermore, strong double-sided adhesive is applied to the placement marking line of the trouser loops, and positioning sponge strips are provided on both sides of the placement marking line of the trouser loops.
[0012] Furthermore, anti-slip sand strips are attached to the seams of the fabric pieces placed on the bottom plate, middle plate, and top plate of the main body.
[0013] Furthermore, a first auxiliary adhesive fixing mark line and a second auxiliary adhesive fixing mark line are provided above the bottom plate of the main body. The upper edge of the middle plate of the main body can be flipped and connected to the first auxiliary adhesive fixing mark line, and the upper edge of the upper plate of the first main body can be flipped and connected to the second auxiliary adhesive fixing mark line.
[0014] Furthermore, the first auxiliary adhesive fixing mark line is located below the second auxiliary adhesive fixing mark line.
[0015] Another object of the present invention is to provide a method for using the above-mentioned curved waistband sewing process template, comprising the following steps: (1) Place the curved waistband splicing fabric pieces on the bottom plate of the main body according to the marking lines of the bottom plate, close the middle plate of the main body, place the curved waistband lining fabric pieces on the middle plate of the main body according to the marking lines of the middle plate, close the first upper plate of the main body and the second upper plate of the main body, start the sewing machine and sew the spliced curved waistband fabric and lining fabric through the sewing channel; (2) Open the first main body upper plate and the second main body upper plate, fold the lining fabric piece of the completed arc waistband splice piece 180° in the opposite direction along the waistband stitching line, fix it with the adhesive of double-sided tape, and then cover and press it with the second main body upper plate. (3) Place the marked line on the trouser loops of the main body middle layer board, align it with the edge of the fabric of the arc waistband splicing piece, and place and fix the trouser loops that need to be sewn at the same time in sequence; place the trouser body pieces after the body is spliced along the edge of the fabric of the arc waistband, and ensure that the seam of the trouser body pieces is aligned with the alignment guide line of the arc waistband splicing piece. (4) Close all the first main body upper plates, and sew the waistband of the trouser body piece after the curved waistband is joined with the body, and sew the trouser loops at the same time; (5) Remove all the trouser pieces from the waistband seam cutout along the arc waistband and the body after the trouser pieces are joined together.
[0016] Beneficial effects: 1. The sewing grooves of each layer of the present invention are precisely aligned to form a stable sewing channel, which guides the sewing machine needles to run along a fixed trajectory, ensuring smooth sewing and uniform spacing. This solves the problems of dimensional deviation and substandard shape caused by manual operation in traditional sewing, and improves the consistency of mass-produced products.
[0017] 2. This invention achieves rapid and accurate positioning of cut pieces, lining, trouser loops, and trouser body through precisely set marking lines on each layer of the template, avoiding positioning errors caused by traditional manual comparison and marking, and ensuring that the design size and shape of the curved waistband are accurately implemented and meet the pattern making requirements.
[0018] 3. The process of using this invention integrates multiple traditionally scattered processes such as assembling the outer and inner fabrics, folding and fixing the lining fabric, positioning the trouser loops, and sewing the upper waistband. Through the integrated design of the template's layer opening and closing and positioning and fixing, multiple processes can be operated simultaneously (such as sewing the trouser loops and upper waistband simultaneously), reducing process connection time and manual transportation costs. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.
[0020] Figure 2 This is a schematic diagram of the structure of the main bottom plate of the present invention.
[0021] Figure 3 This is a schematic diagram of the structure of the middle layer plate of the main body of the present invention.
[0022] Figure 4 This is a schematic diagram of the structure of the first main body upper plate of the present invention.
[0023] Figure 5 This is a schematic diagram of the structure of the second main body upper plate of the present invention. Detailed Implementation
[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings.
[0025] like Figure 1-5 As shown, this embodiment of a curved waistband sewing template includes a main bottom plate 2, a main middle plate 3, a first main upper plate 5, and a second main upper plate 6. The main middle plate 3 and the first main upper plate 5 can be folded and connected sequentially above the main bottom plate 2, and the second main upper plate 6 can be folded and connected below the main bottom plate 2.
[0026] The main body bottom plate 2 is provided with a first sewing groove 2006 and a second sewing groove 2007. The first sewing groove 2006 has an arc-shaped structure, and the second sewing groove 2007 is located below the first sewing groove 2006. The arc of the second sewing groove 2007 is the same as that of the first sewing groove 2006.
[0027] An arc-shaped groove 3009 is provided on the main middle plate 3. The upper edge of the arc-shaped groove 3009 is aligned with the upper edge of the first sewing groove 2006, and the lower edge of the arc-shaped groove 3009 is aligned with the lower edge of the second sewing groove 2007.
[0028] A third sewing groove 5006 is provided below the first main upper plate 5, and a fourth sewing groove 6007 is provided above the second main upper plate 6. The third sewing groove 5006 is aligned with the upper edge of the arc groove 3009 of the main middle plate and the edge of the first sewing groove 2006 of the main bottom plate; the fourth sewing groove 6007 is aligned with the lower edge of the arc groove 3009 of the main middle plate and the edge of the second sewing groove 2007 of the main bottom plate, forming a vertically continuous sewing channel.
[0029] In one specific implementation, the first main body upper plate 5 is set as 3 pieces, from left to right: the left first main body upper plate, the middle first main body upper plate, and the right first main body upper plate. They are arranged with serial numbers. The purpose of this arrangement is that, due to the large range of the groove, the 3-piece segmented design can fit the arc contour and cover the pressing material in sections, avoiding uneven pressing and fabric displacement caused by the curvature of a single large plate, and ensuring sewing accuracy.
[0030] In one specific embodiment, two auxiliary adhesive fixing marking lines 2002 are provided below the main body bottom plate 2, and a first auxiliary adhesive fixing marking line 2001 and a second auxiliary adhesive fixing marking line 2008 are provided above it, for positioning the main body mid-layer plate 3, the first main body upper secondary plate 5, and the second main body upper plate 6. The main body bottom plate 2 also has bottom plate marking lines for positioning the cut pieces, including a curved waistband splicing cut piece fabric position line 2003 and a curved waistband fabric splicing cut piece placement alignment marking line 2004. The main body mid-layer plate 3 has mid-layer marking lines for positioning the cut pieces and trouser loops, including a curved waistband cut piece lining fabric position line 3003, a trouser loop placement marking line 3005, and a trouser body cut piece placement alignment marking line 3004.
[0031] The following is a further explanation of the template fixing method: Place the bottom panel 2 with the auxiliary lines drawn on it facing upwards horizontally. Place the middle panel 3 on top of the bottom panel 2. Align the upper and lower edges of the arc groove 3009 of the middle panel with the first sewing groove 2006 and the second sewing groove 2007 of the bottom panel. Align the upper edge 3001 of the middle panel with the first auxiliary adhesive fixing mark line 2001 of the bottom panel. Use cloth tape to fix the middle panel 3 to the bottom panel 2 along the upper edge 3001 of the middle panel, so that the middle panel 3 and the bottom panel 2 can be freely opened and closed at 180°. Open the fixed middle panel 3 and attach strong transparent tape to the reverse side of the connection between the bottom panel 2 and the middle panel 3 to reinforce the folded connection edge.
[0032] Close the glued and fixed main body middle layer plate 3 onto the main body bottom layer plate 2. Place the first main body upper layer plate 5 on top of the main body middle layer plate 2, overlapping it according to the design numbers. The edge of the third sewing groove 5006 of the first main body upper layer plate 5 is aligned with the upper edge of the arc groove 3009 of the main body middle layer plate 3, so that it is simultaneously aligned with the edge of the first sewing groove 2006 of the main body bottom layer plate 2. The upper edge 5008 of the first main body upper layer plate is aligned with the main body bottom layer plate 2. Align the second auxiliary adhesive fixing mark line 2008 of the bottom plate 2, and use cloth tape to attach and fix the first upper plate 5 of the main body to the bottom plate 2 of the main body in a centered manner along the second auxiliary adhesive fixing mark line 2008, so that the first upper plate 5 of the main body and the bottom plate 2 of the main body can be freely opened and closed at 180°. Open the first upper plate 5 of the main body that has been attached and fixed, and attach strong transparent tape in a centered manner on the reverse side of the connection between the bottom plate 2 of the main body and the first upper plate 5 of the main body to reinforce the folded connection edge.
[0033] A second upper main body plate 6 is placed on top of the main middle layer plate 3. The left and right edges of the second upper main body plate 6 are aligned with the auxiliary adhesive fixing mark line 2002 on the main bottom plate 2. The edge of the fourth sewing groove 6007 of the second upper main body plate 6 is aligned with the lower edge of the arc groove 3009 of the main middle layer plate 3, so that it is simultaneously aligned with the edge of the second sewing groove 2007 of the main bottom plate 2. The overall position is compared and verified. Cloth tape is used to stick and fix the second upper main body plate 6 to the lower edge of the template bottom plate 2 along the flipped edge, so that the second upper main body plate 6 and the main bottom plate 2 can be freely flipped open and closed at 180°. After closing and fixing the second upper main body plate 6, the corresponding edge to which it is stuck is fixed and reinforced with cloth tape.
[0034] Anti-slip sand strips are attached to the seams of the fabric pieces placed on the bottom main plate 2 and the middle main plate 3. Anti-slip sand strips are also attached to the seams of the fabric pieces placed on the middle main plate 3 and the first upper main plate 5 and the second upper secondary main plate 6. Strong double-sided tape is attached to the trouser loop placement marking line 3005 on the middle main plate 3, and positioning sponge strips are attached to both sides of the trouser loop placement marking line 3005. Strong double-sided tape is also attached intermittently to the outside of the fabric piece marking line placed on the lower edge of the arc groove 3009 of the middle main plate 3.
[0035] In one specific implementation, the method of using the curved waistband sewing template is as follows: (1) Position the curved waistband splicing fabric piece by positioning it according to the marking lines on the bottom panel 2, and determine the alignment point and design size of the curved waistband splicing. Close the middle panel 3 and cover it with the curved waistband splicing fabric piece positioned by the marking lines on the bottom panel 2. Then, position the lining fabric piece of the curved waistband by positioning it according to the marking lines on the middle panel 3. Close all the panels of the first upper panel 5 and the second upper panel 6 and cover it with the lining fabric piece of the curved waistband positioned by the marking lines on the middle panel 3. Then, start the sewing machine to sew the spliced curved waistband fabric and lining.
[0036] (2) After completing the sewing and splicing of the curved waistband and lining, open all the panels of the first main body upper plate 5 and the second main body upper plate 6. Place the lining panel of the curved waistband splicing piece that has been sewn and positioned at the marking line of the main body middle plate 3, fold it 180° in the opposite direction along the waistband sewing line, fix it with the adhesive of the double-sided tape on the template, and then cover and press it with the second main body upper plate 6.
[0037] (3) On the main body middle layer board 3, align the trouser loops with the edge of the fabric of the curved waistband splicing piece at position 3005, and place and fix the trouser loops that need to be sewn simultaneously. After placing and fixing the trouser loops that need to be sewn simultaneously, align the trouser body pieces after the main body is spliced with the edge of the fabric of the fabric of the piece to be spliced on the curved waistband. When placing the trouser body pieces after the main body is spliced, the seam of the spliced trouser body pieces needs to be aligned with the trouser body piece placement alignment mark 3004.
[0038] (4) Close all the first main body upper plates 5, and sew the waistband of the trousers after the curved waistband is joined with the body, and sew the trouser loops at the same time.
[0039] (5) Remove all the trouser pieces from the waistband seam after the trousers are joined with the body by the curved waistband seam. The sewing is now complete.
Claims
1. A template for sewing an arc-shaped waistband, characterized in that, It includes a main bottom plate, a main middle plate, a first main upper plate, and a second main upper plate; the main middle plate and the first main upper plate can be folded and connected sequentially above the main bottom plate, and the second main upper plate can be folded and connected below the main bottom plate. The bottom plate of the main body is provided with a first sewing groove and a second sewing groove. The first sewing groove is an arc-shaped structure, and the second sewing groove is located below the first sewing groove. The arc of the second sewing groove is the same as that of the first sewing groove. An arc-shaped groove is provided on the middle layer plate of the main body. The upper edge of the arc-shaped groove is aligned with the upper edge of the first sewing groove, and the lower edge of the arc-shaped groove is aligned with the lower edge of the second sewing groove. A third sewing groove is provided below the first main upper plate, and a fourth sewing groove is provided above the second main upper plate. The third sewing groove is aligned with the upper edge of the arc groove of the main middle plate and the edge of the first sewing groove of the main bottom plate; the fourth sewing groove is aligned with the lower edge of the arc groove of the main middle plate and the edge of the second sewing groove of the main bottom plate, forming a vertically continuous sewing channel.
2. The template for the arc-shaped waistband sewing process according to claim 1, characterized in that, The first main body upper plate is configured as three pieces, from left to right: the left first main body upper plate, the middle first main body upper plate, and the right first main body upper plate.
3. The template for the arc-shaped waistband sewing process according to claim 1, characterized in that, Two auxiliary adhesive fixing marking lines for the second upper body plate are provided below the bottom plate of the main body plate, and the left and right sides of the second upper body plate are aligned with the auxiliary adhesive fixing marking lines for the second upper body plate.
4. The template for the arc-shaped waistband sewing process according to claim 1, characterized in that, The bottom plate of the main body is provided with bottom plate marking lines, which include the position lines of the arc waistband splicing fabric pieces and the alignment marking lines of the arc waistband fabric splicing fabric pieces.
5. The template for the arc-shaped waistband sewing process according to claim 1, characterized in that, The main body middle layer plate is provided with middle layer plate marking lines, which include the position lines of the curved waistband lining, the trouser loop placement marking lines, and the trouser body lining alignment marking lines.
6. The template for the arc-shaped waistband sewing process according to claim 5, characterized in that, Strong double-sided adhesive is applied to the placement marking line of the trouser loops, and positioning sponge strips are provided on both sides of the placement marking line of the trouser loops.
7. The template for the arc-shaped waistband sewing process according to claim 1, characterized in that, Anti-slip sand strips are attached to the seams of the fabric pieces placed on the bottom, middle, and top layers of the main body.
8. The template for the arc-shaped waistband sewing process according to claim 1, characterized in that, The bottom plate of the main body is provided with a first auxiliary adhesive fixing mark line and a second auxiliary adhesive fixing mark line. The upper edge of the middle plate of the main body can be flipped and connected to the first auxiliary adhesive fixing mark line, and the upper edge of the upper plate of the first main body can be flipped and connected to the second auxiliary adhesive fixing mark line.
9. The template for the arc-shaped waistband sewing process according to claim 8, characterized in that, The first auxiliary adhesive fixing mark line is located below the second auxiliary adhesive fixing mark line.
10. A method of using the arc-shaped waistband sewing process template according to any one of claims 1-9, characterized in that, Includes the following steps: (1) Place the curved waistband splicing fabric pieces on the bottom plate of the main body according to the marking lines of the bottom plate, close the middle plate of the main body, place the curved waistband lining fabric pieces on the middle plate of the main body according to the marking lines of the middle plate, close the first upper plate of the main body and the second upper plate of the main body, start the sewing machine and sew the spliced curved waistband fabric and lining fabric through the sewing channel; (2) Open the first main body upper plate and the second main body upper plate, fold the lining fabric piece of the completed arc waistband splice piece 180° in the opposite direction along the waistband stitching line, fix it with the adhesive of double-sided tape, and then cover and press it with the second main body upper plate. (3) Place the trouser loops on the main body middle layer board at the marked position, align them with the edge of the fabric of the curved waistband splicing piece, and place and fix the trouser loops that need to be sewn at the same time in sequence; place the trouser body pieces after the body is spliced along the edge of the fabric of the curved waistband, and ensure that the splicing seam of the trouser body pieces is aligned with the trouser body pieces placement alignment mark line. (4) Close all the first main body upper plates, and sew the waistband of the trouser body piece after the curved waistband is joined with the body, and sew the trouser loops at the same time; (5) Remove all the trouser pieces from the waistband seam cutout along the arc waistband and the body after the trouser pieces are joined together.