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To create garments we often use the basic seams of a sewing machine. So what is the seam? What are the basic types of seams? Please refer to the information below with Tnhelearning.edu.vn!
What is a seam?
A seam is a combination of stitches that form seams to join two layers of fabric together. Seams are widely used in making clothes, shoes, home textiles and sportswear. All are sewn by different lines of industrial sewing machines.
The seam has three main functions, that is, assembling details, shaping details and finally decorating the product.
Types of seams commonly used in apparel
Hidden seam 1 thread
Sewing method: Hidden seam 1 is sewn by 1 stitch of the needle, the stitch goes up on the fabric surface. The thread goes through the first layer of fabric, and at the same time hooks a point to open the second layer and pulls the needle up to form stitches.
Application: Used to squeeze bears, sew leeches…
Request:
- Stitch density is only from 3 -5 stitches/inch
- Do not remove the nose, with thin cloth can remove 1-2 stitches
Chain hook seam
Chain stitches include the following seams:
- Chain hook seam
Sewing method: The chain hook seam is made by a needle carrying the needle thread through the layer of material, the needle hooks the stitch at the hook beak, then pulls up to form a seam below the material layer.
Application: Usually used to sew single-needle bare seams on woven fabrics.
Requirements: According to the regulations on the density of the thread.
- 1 needle chain stitch
Sewing method: The seam is made by a needle thread, forming self-locking chain links under the material, then forming a complete seam.
Application: Seam for Comb line in sewing clothes or for sewing bags.
Requirements: According to the regulations on the density of the thread.
- 2 needle chain stitch
Sewing method: To make a 2-needle chain hook stitch, 2 needle threads are required through the layer of material, and then hook in with the 2 lower threads to form a seam.
Application: The 2-needle crochet stitch is used to sew stitched seams, over jeans or shirts.
Request:
- According to the regulations on the distance between 2 needles.
- According to the regulations on the density of stitches.
Knotted seam
Knotted seams include the following two types of seams:
- Seam 1 knotted needle
Sewing method: A knotted 1-needle seam is made up of 1 needle thread and 1 bobbin thread to form a knot in the middle of 2 layers of materials to be sewn.
Application: Used for sewing, single-needle stitching and straight seams.
Requirements: According to the density of the thread.
- Knotted 2 needle seam
Sewing method: The 2-needle knot seam is made up of 2 parallel seams, similar to the 2-needle 1-needle stitch.
Application: In 2-needle sewing machine
Request:
- According to the distance between 2 needles.
- According to the specified pitch density.
Zigzag seam
The zigzag seam consists of 2 basic seams:
- Basic zigzag stitch
Sewing method: In the middle of the basic zigzag stitch, the stitch is made up of 1 needle thread and 1 bobbin thread. Zigzag is also used to remove bugs, re-nose, buttonholes, and buttons.
Application: Seam application in decorative embroidery, sewing sports clothes, training wear, newborn clothes…
Request:
- According to the specified pitch density.
- According to the regulation of the needle oscillation amplitude (1/8″, 3/16″, 1/4″).
- Chain stitch zigzag
How to sew: To sew a zigzag stitch, we need to create a needle thread and a loop of thread to be placed under the seam.
Application: Sewing zigzag chain hook used for decorative embroidery, eyelids, parades, sewing training clothes, newborn clothes…
Request:
- According to the specified pitch density.
- According to the regulation of needle oscillation (1/8″, 3/16″, 1/4″)
Pressed ceiling seam
The overriding ceiling seam includes the following 6 basic seams:
- 2 needles pressed ceiling
How to sew: Under the seam, a two-needle bare stitch is made up of 2 needle threads through the layer of material, then hooked to 1 lower thread to form a stitch. After the needle thread has hooked into the lower thread loop, it will form a narrow line under the surface of the material.
Application: Seam used to clear hem, wrap edges, sew pants, sew leeches.
Request:
- According to the regulation of the distance between 2 needles (1/8″, 3/16″, 1/4″).
- According to the regulations on the density of stitches.
- 3 needles pressed ceiling
Sewing method: Similar to bare stitch over 2 needles, bare stitch presses 3 needles below the seam created by 3 needle thread going through the layer of material and hooking in with 1 lower thread to form a stitch. Crochet needle thread with lower thread loop forms the edge thread on the underside of the material.
Application: The 3-needle bare seam is used to sew elastic waistbands for men’s and children’s knitted underwear.
Request:
- According to the regulation of the distance between 2 needles (1/4″).
- According to the regulations on the density of stitches.
- Ceiling press 2 needles 4 threads
Sewing method: To sew a bare seam over 2 needles 4 only need 2 needle threads, 1 strip thread for armoring and 1 thread to create a loop of thread under the surface of the material.
Application: Used to overlock the hemlines of shirts, underwear…
Request:
- According to the regulation of the distance between 2 needles (1/8″, 3/16″, 1/4″).
- According to the regulations on the density of stitches.
- Ceiling pressed 3 needles 5 thread
Sewing method: Overlock stitch over 3 needles 5 thread is formed by 3 needle threads, 1 strip thread to wrap the edge, 1 trigger thread to create a loop under the material.
Application: Used for overlocking, hemming of knitted products.
Request:
- According to the regulation of the distance between 2 needles (1/4″).
- According to the regulations on the density of stitches.
- Ceiling press 4 needle 9 thread
Sewing method: Similar to the upper stitches, the 4-needle press-down ceiling is formed by 4 needle threads, 1 strip thread to wrap the edge, 4 trigger threads to create a loop under the material. Normally, the bare seam over 4 needles 6 is used more than the bare seam over 4 needles 9 just because the machine is easy to maintain.
Application: Used to sew underwear seams made of knitted fabrics, felt fabrics.
Requirements: According to the regulations on the density of the thread.
- Ceiling press 4 needles 6 thread
Sewing method: Overlock stitch is formed by 4 needle threads, 1 strip thread to cover the edge, 1 trigger thread to create a loop under the material. This seam is used more than the bare seam with 4 needles 9 because the machine is easy to maintain.
Application: Used to sew underwear seams made of knitted fabrics, felt fabrics.
Requirements: According to the regulations on the density of the thread.
Overlock seam
Overlock seams include the following 7 basic seams:
- Overtaking 2 threads
Sewing method: To form a hidden overlock or hemline, overlock stitch 2 is formed by a thread-bearing needle and a thread loop wrapped around the edge of the material.
Application: Used for overclocking, squeezing hidden bears.
Request:
- According to regulations on overpass width (1/8″, 5/32″, 3/16″).
- According to the regulations on the density of stitches.
- Overlock 3 thread
How to sew: From the stitch of 1 needle carrying the thread and 2 loops of thread wrapped around the edge of the material, we can create a simple 3 overlock seam.
Application: Used in seams at the edge of materials.
Request:
- According to regulations on overpass width (1/8″, 5/32″, 3/16″).
- According to the regulations on the density of stitches.
- Overlock 3 only has 2 lines of thread covering the edge
Sewing method: In the edge wrap, overlock seam 3 has only 2 edges created by 1 needle carrying thread and 2 loops of thread.
Application: For overlocking at seams of shirts or pants.
Request:
- According to regulations on overpass width (1/8″, 5/32″, 3/16″).
- According to the regulations on the density of stitches.
- Overlock 2 needle 4 thread
Usage: For a 2-needle 4-thread overlock stitch, both needles hook the upper thread loop. The seam is made by 2 needles carrying thread and 2 loops of thread are wound to the edge of the material. The 2-needle 4-thread overlock is more commonly used than the short-cut overpass because it is less prone to slippage.
Application: Used to sew stretch fabric such as knitted or woven fabric.
Requirements: According to the regulations on the density of the thread.
- 4 thread overlock
Sewing method: In the 4th overlock seam, it is just a combination of two single chain hook stitches and 2 thread overlock stitches. This stitch costs less than a 5-thread overlock, but manufacturers prefer to use a 5-thread overlock.
Application: For strong seams on knitted and woven fabrics.
Request:
- According to the regulations on the distance between the 2 needles and the overlock edge (1/8″-1/8″, 3/16″-3/16″, 3/16″1/4″).
- According to the regulations on the density of stitches.
- 5 thread overlock
How to sew: As for the 5-thread overlock seam, it is a combination of a single chain hook and a 3-thread overlock.
Application: For seams of knitted and woven fabrics as they require strength from the seams.
Request:
- According to the regulations on the distance between the 2 needles and the overlock edge (1/8″-1/8″, 3/16″-3/16″, 3/16″1/4″).
- According to the regulations on the density of stitches.
- Overturning road is short
Sewing method: To sew a short overlock, the right needle thread is required to hook the upper thread loop. The seam is made by 2 needles carrying the thread and 2 loops of thread wrapped around the edge of the material. The highlight of this seam is that it is not easy to slip off the nose like the 2-needle 4-thread squeezing line.
Application: Used to sew stretch fabric such as knitted or woven fabric.
Requirements: According to the regulations on the density of the thread.
Above is an introductory article about seams and basic types of seams commonly used in apparel. If you still have any questions that need to be answered, please leave a comment below so that Tnhelearning.edu.vn can help you!
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