Beauty lies in the whole, success lies in the details, and details can make or break the whole. This is especially true in curtain making, where every step contributes to the final product’s quality. The quality of a curtain is accumulated slowly by the treatment of small details one by one.
With the development of the times, modern curtain making – using the latest technology such as electronic computers to process curtains in various steps, automated equipment production replaces traditional processing to achieve standardized and unified production.
Next, I will share with you how modern curtain processing equipment works. Its efficiency can be 10-15 times higher than traditional processing!
There are many kinds of curtain fabrics: cotton, linen, chenille, flannel, polyester, etc., and high precision. The above are all commonly used fabrics for curtains, and their advantages are also different.
These raw materials determine the texture, light transmittance, and durability of the curtains.
Cotton and linen: Cotton and linen blended curtains inherit the softness of cotton fabrics. On the other hand, many people worry that cotton and linen curtains will wrinkle badly.
This mainly depends on the linen content and processing technology of the cotton and linen. Linen fiber itself has strong wrinkle resistance.
After proper processing technology, cotton and linen fabrics will become soft and drapey, with very good air permeability and moisture absorption.
Chenille: Chenille fabric is a velvety yarn woven from short fibers and filaments of different fineness and strength. It has the characteristics of full texture, soft touch, and thick and light fabric.
Flannel: Flannel has a very good three-dimensional effect. After the whole-pile process, the surface of the flannel is rich and fluffy, and it feels very delicate and soft, thick and rich in texture.
It has good moisture permeability, light blocking, sound absorption, heat insulation, and thermal insulation effects.
Polyester: Polyester is the simplest of the three major synthetic fibers and is relatively cheap. In addition, it is strong and durable, elastic, not easy to deform, corrosion-resistant, insulating, crisp, easy to wash and dry, and is loved by people.
Fiber fineness analyzer: used to measure fiber diameter and cross-sectional shape
Universal material testing machine: test fiber tensile strength and tear strength.
Gas chromatography-mass spectrometry: detect formaldehyde, azo dyes, organic solvent residues, and harmful dyes.
Automatic cotton blending machine: various fibers need to be pretreated before blending to ensure that they can be evenly mixed. Then the different fibers are mixed according to the predetermined ratio for spinning or weaving.
In this process, special attention should be paid to the uniformity of fiber dispersion to avoid fiber agglomeration or uneven distribution.
Spinning is the process of turning fibers (such as cotton, linen, etc.) into yarn through mechanical processing. It is an act of taking animal or plant fibers and twisting them to form a continuous and infinitely extending yarn so that it is suitable for weaving.
The spinning process is vital in curtain making, transforming fibers into yarns that form the basis of curtain fabrics.
The spinning process mainly includes: cleaning, carding, combing, drawing, roving, and spinning. The following is a detailed introduction to each step in the spinning process.
Cleaning: The cotton opener loosens the compressed raw cotton into smaller cotton pieces or bundles, and removes most of the impurities, defects, and short fibers that are not suitable for spinning in the raw cotton.
And mixes the raw cotton of different components fully and evenly to ensure the stability of the cotton yarn quality, and then makes cotton rolls of a certain weight, length, uniform thickness, and good appearance.
Carding: After being processed by the cotton opening and cleaning combined machine, the fibers in the cotton rolls or loose cotton are mostly in the state of loose cotton blocks and cotton bundles,
And contain 40%~50% impurities, most of which are fine, highly adhesive fibrous impurities (such as broken seeds with fibers, seed crumbs, soft seed skins, cotton neps, etc.)
So it is necessary to completely decompose the fiber bundles into single fibers, remove the fine impurities remaining in them,
And make the fibers of each cotton component fully mixed in the state of single fibers to make uniform cotton strips to meet the requirements of the subsequent processes.
Combing: Remove cotton neps, impurities, and fiber defects in the fibers, further separate the fibers, exclude short fibers below a certain length, pull the cotton strips to a certain thickness,
Increase the parallel straightening of the fibers, and finally make the cotton strips that meet the composite requirements.
Drawing: The drawing process involves combining several raw strips and, after roller drawing, reducing the unevenness of the long segments of the fiber strips, eliminating the curled fibers in the raw strips, and improving the straightening parallelism and separation of the fibers.
By utilizing the combining effect between the fiber strips, the fibers of different properties in the fiber strips are mixed in a certain mixing ratio and mixed evenly.
Roving: The main purpose of the roving process is to give the yarn strips an appropriate twist or false twist by twisting or rubbing.
So that the roving has a certain strength to withstand the winding and unwinding tension, and is conducive to the drafting process on the spinning frame.
The roving is wound into a certain package form to facilitate transportation and storage, and to meet the requirements of the spinning frame for the feeding form, to better improve the efficiency of the spinning frame.
Spinning: Spinning is the last step in the spinning process. It is mainly a spinning machine that stretches, twists and winds semi-finished roving or sliver into spinning tubes. The quality of the finished spinning has a great influence on the quality of the finished yarn.
Spinning is the process of turning fibers (such as cotton, linen, etc.) into yarn through mechanical processing. It is an act of taking animal or plant fibers and twisting them to form a continuous and infinitely extending yarn so that it is suitable for weaving.
The weaving process mainly includes winding, warping, sizing, drawing-in, weaving, and finishing. The following is a detailed introduction to each step.
Winding: The bobbins or hanks from the spinning department are processed into bobbins that meet certain requirements on the winding machine.
The bobbins (threads) are wound into bobbins with large capacity, size, and certain density, and some defects and impurities on the yarn are removed to improve the quality of the yarn.
Warping: The warping process is mainly based on the requirements of process design. A certain number and length of warp yarns are drawn out from the winding bobbin to form a yarn sheet.
So that the warp yarns have uniform tension and are tightly wound around the warping beam in parallel to each other, making preliminary preparations for forming a weaving beam.
Warp sizing: Sizing is applied to the warp yarn to improve its wearability. The unsized single yarn fibers are not firmly bonded to each other, and there is a lot of surface hairiness, making it difficult to weave.
There are six main methods of sizing: warp beam sizing, weaving beam sizing, whole sizing combined with sizing, dyeing and sizing combined, single yarn sizing, and hank yarn sizing.
Drawing in: Drawing in refers to the process of threading the warp yarns on the weaving beam into the warp stop piece, the heddle and reed in sequence according to the fabric drawing.
There are two ways of drawing in warp: manual and mechanical. Drawing machines are commonly used for plain and twill fabrics.
They can draw in 4 warp yarns at a time, and the output of a single machine is more than 50% higher than that of a manual.
Weaving: The weaving process mainly refers to passing the warp beam through the shuttle loom to guide the weft yarn, interweaving it into grey cloth according to the process requirements, and winding it into cloth rolls.
Dyeing and finishing is the subsequent treatment of woven fabrics to achieve the desired color, feel, and size. The pre-treatment of cotton fabrics includes singeing, desizing, scouring, bleaching, mercerizing, and other processes.
Singeing： After entering the printing and dyeing factory from the textile factory, the grey cloth should first go through processes such as inspection, turning over, batching, printing, and sewing, and then undergo singeing processing.
The gas singeing machine quickly passes the fabric over the flame generated by gas fuel, which can instantly remove the feathers on the fabric’s surface.
Desizing： To increase the wear resistance, smoothness, and antistatic properties of the warp yarn during weaving, improve its strength and cohesion, and improve its wearability, sizing processing must be carried out before weaving.
The purpose is to protect the warp yarn, especially for the currently widely used high-speed looms (air-jet looms, water-jet looms).
Commonly used desizing methods include alkali desizing, (starch) enzyme desizing, acid desizing, and oxidative desizing.
Scouring： The purpose is to remove fiber impurities and improve fabric processing properties, especially wetting properties. These impurities seriously affect the wettability of the fabric and hinder the fabric dyeing and finishing processes.
Bleach： After scouring, most of the natural and artificial impurities on the fabric have been removed, but bleached and light-colored fabrics, still need to be bleached.
That is, the bleaching process is mainly to remove pigments and improve whiteness.
Mercerizing: Cotton woven fabrics are treated with a concentrated alkali solution to give them a silky luster and, more importantly, improve their dimensional stability. The cotton woven fabrics are shaped and fully de-alkalied by passing through a clip mercerizing machine with upper and lower suction and a de-alkali steamer.
Refining and pre-shrinking: The purpose of refining and pre-shrinking is mainly to remove the oil, sizing agent, and dirt adsorbed on the fabric (fiber) during weaving, storage, and transportation.
At the same time, some oligomers on the fiber can also be dissolved during high-temperature refining.
During the dyeing and finishing process, the fabric is subjected to tension in the warp direction, and the warp buckling wave height decreases, resulting in elongation.
The shrinkage machine is to wet the fabric with steam or spray, then apply mechanical compression in the warp direction to increase the buckling wave height, and then let it dry.
The shrinkage rate of cotton cloth after pre-shrinkage can be reduced to less than 1%, and the softness of the fabric will also be improved due to the mutual compression and rubbing between fibers and yarns.
During the fabric pre-shrinking process, the elastic modulus and pressure uniformity of the rubber belt directly determine two major indicators.
Shrinkage rate control: The compression resilience of the rubber belt needs to accurately match the warp tension release requirements of the fabric (cotton cloth shrinkage rate ≤ 1%);
Hand feel improvement: Uniform pressure causes synchronous rubbing between fibers to avoid local hardening.
Pain points of traditional rubber belt:
Insufficient elastic modulus leads to uneven pressure transmission and uneven surface; poor fatigue resistance, and hardness decreases by >10% after continuous operation, affecting shrinkage stability.
Our company’s sanforizing rubber belts are made of imported high-quality raw and auxiliary materials, refined through advanced rubber formula and unique processing technology, effectively overcoming the shortcomings of traditional pre-shrink rubber. The elastic modulus can reach 5-10 MPa, which can evenly transmit pressure to the fabric surface under high pressure, avoiding fabric damage caused by local stress concentration.
The rubber belt is added with high-temperature resistant fillers, with a temperature range of up to 130°C, and is resistant to corrosion by steam and finishing agents (such as resins and softeners).
The surface adopts multi-layer composite technology, and the friction coefficient is stable at 0.3-0.5, reducing the wear with the metal roller.
The rubber belt adopts a jointless ring design, and the length tolerance is controlled at ±0.1% (for example, the error of a 10-meter-long rubber belt is ≤1 cm) to ensure synchronization with the equipment rollers.
Heat setting: eliminate the stress and strain accumulated in the fabric, make the fabric surface smooth (wrinkle-free), and the size stable (good thermal stability). For polyester fibers, improve their wrinkle resistance and ironing resistance.
The process sequence of heat setting, Grey cloth setting (pre-setting): impurities are fixed and difficult to remove, and yellowing can be removed during bleaching, which is not conducive to dyeing and has high requirements for grey cloth quality.
Semi-finished product setting (mid-setting): easy to wrinkle in the process before setting; make the cloth surface flat and reduce dyeing defects; reduce dye adsorption, and have high requirements for pre-treatment before and after mercerization.
Finished product setting (post-setting): it will affect the sublimation fastness of the dye, dye discoloration, and the yellowing caused by setting cannot be removed and has high requirements for dyes.
Usually, it is arranged before dyeing, and the yellowing is removed by bleaching.
The curtain fabric is accurately cut into the required size according to the size requirements provided by the customer. When cutting the curtain, you must first pay attention to the warp and weft direction of the fabric.
The computer three-dimensional lifting and unloading vertical cutting machine can quickly change the cutting size. After the cloth is raised, it is equipped with a cloth adsorption function to ensure the verticality of the cloth.
Equipped with an infrared device to ensure accurate cutting. It can be raised and lowered according to the width of the cloth and can cut different materials and fabrics.
A complete sewing process includes material collection, stitching, side hemming, and bottom hemming.
After cutting, the fabric used in curtain making will be handed over to experienced sewing workers to sew the various parts of the curtain fabric carefully to ensure the structural stability and smooth seams of the curtain.
The curtain making process employs advanced sewing systems:
Curtain splicing overlock sewing machine: It can realize fabric splicing, fabric overlock sewing, lining overlock sewing, lead line overlock sewing, lace decoration, and other functions.
Automatic curtain hemming machine: can replace hemming and lining molds of different sizes, equipped with jet system, wide applicability, can sew various fabrics, automatic fabric tail tracker, automatic sewing.
Multi-needle splicing pattern machine for curtains: can reduce the original multiple sewing processes to one-time completion, good flatness, and high production efficiency.
The upper and lower rear pull wheels perfectly assist in feeding, and with different accessories, pattern splicing can be completed.
Automatic curtain pleat sewing machine: automatic calculation of pleats function, can sew 10,000 pleats in 10 hours, the efficiency is equivalent to 10-15 times that of traditional methods.
After sewing, the curtains will be ironed to remove wrinkles and make the surface flat, which will not only enhance the overall beauty of the curtains but also ensure that the shape and lines of the curtains are flawless.
The essence of curtain ironing is to achieve fiber morphology reshaping through precise control of temperature, pressure, and time. Temperature: needs to match the fabric type (cotton 180-200℃/polyester 130-150℃), temperature difference fluctuation ≤±3℃.
Pressure: evenly cover the seam area (≥0.5MPa) to avoid indentation; efficiency: high-speed assembly lines require ironing belts to be resistant to high-temperature fatigue.
Pain points of traditional ironing belts:
The uneven hardness of the silicone layer leads to pressure distribution differences of >20%; poor thermal conductivity (<0.5 W/m·K) prolongs the heating time and increases energy consumption by 30%.
Seams are prone to aging (delamination occurs after 500 hours of continuous use)
Our ironing belts address these problems and increase the pressure adaptability to 95%, ensuring that the one-time molding pass rate of European-style three-dimensional pleats is ≥98%.
Avoiding pattern deformation, and increasing steam utilization from 70% to 90%. After a curtain factory adopted our ironing belts:
The rework rate dropped from 12% to 1.5% (defective products caused by indentation/wrinkles);
Energy consumption costs were reduced by 18% (improved thermal conductivity shortens the ironing time of a single piece to 45 seconds); Equipment downtime rate was reduced by 80% (the life of the seams was extended to 1500 hours).
The advanced high-temperature intelligent shaping process is used to change the molecular structure of the fabric in a vacuum chamber under high temperature, producing a memory shaping effect, making the curtain pleats more rounded and natural, and keeping the curtain in the most beautiful state for a long time.
Fixed height cutting
After the curtains are finalized, they are cut to the actual height provided by the customer. The length of the curtains is precisely adjusted to perfectly match the window height.
Curtain cutting machine: The required cutting size can be quickly changed, the infrared edge alignment device ensures the accurate cutting size and fabrics of different materials can be cut.
After the height cutting is completed, the curtain finishing process follows, which includes the sewing of fabric tapes, sewing of pleated leather labels, and trimming and finishing.
Following strict standards, the width of the seams is consistent, the seams are symmetrical and beautiful, and the pleated type, depth, quantity, distance, etc.
Are intelligently controlled to ensure the beauty and quality of the product and effectively improve the exquisiteness and efficiency of curtain pleating.
Many people think that buying curtains is just buying a few pieces of cloth. In fact, in addition to curtain cloth, there are also various accessories. Modern curtain making requires precision-engineered components.
Curtain accessories include tracks, Roman rods, track pulleys, hooks, lace, lead pendants, cloth belts, tie balls (tie), decorations, etc.
The cold bending forming machine is suitable for the production of high-end curtain tracks with multiple specifications and small batches.
By accurately controlling the rebound and surface quality, it can meet the strict requirements of metal tracks.
Through precise process control and mold innovation, the curtain hooks produced by the injection molding machine can achieve 0.1mm level accuracy and 100,000 times of service life, meeting the full-scenario needs from fast-moving consumer goods to high-end customized markets.
All finished products of curtain making must undergo strict quality inspection before leaving the factory, Final inspection in curtain making includes: whether the appearance, size, color, and accessories installation meet the standards.
Simulate the draping state of daily curtain use for quality inspection, simulate sunlight in the background, and check the fabric details (weft breakage, knots, snagging, etc.).
Appearance inspection: check the surface cleanliness and sewing quality; size inspection: use laser light meter with an accuracy of ±1mm and symmetry inspection; color fastness test: friction color fastness and light color fastness; functional performance inspection: check whether the light blocking and flame retardancy meet the factory requirements.
Packaging: fully digital packaging, clear labeling content, truly zero error. Carton packaging to avoid unnecessary squeezing during transportation and ensure safety during transportation.
Through the above-standardized process, the unpacking qualified rate of curtain products can be increased to 99.8%, and the transportation damage rate can be controlled below 0.2%.
It is recommended to configure an automatic fabric inspection machine and an intelligent packaging line to achieve cost reduction and efficiency improvement.
Filter cotton/polyester and other fibers with a fiber fineness analyzer, and control the impurity rate ≤1.5% and blending ratio deviation ±0.3% according to ISO 2370 standard.
The yarn is spun through the processes of opening, cleaning, and combing the cotton.
The grey fabric is formed by the warping machine arranging the yarn and the loom weaving the warp and weft.
After desizing, dyeing, pre-shrinking, and other dyeing and finishing processes, the fabric is given stable color fastness and dimensional stability.
The finished curtain body is processed by CNC cutting (accuracy ±0.5mm), ultrasonic edge locking, steam shaping, and other processes.
Metal/plastic accessories are manufactured through cold bending, precision injection molding, and other processes, and component integration is completed in combination with an automatic assembly system (positioning accuracy ±0.1mm).
The intelligent fabric inspection system completes the surface defect and mechanical property inspection, and the fully automatic packaging line performs moisture-proof packaging.
We use standardized production processes to strictly control product production standards. Each process is serious and rigorous and follows strict standards to ensure that every curtain that reaches the customer meets ultra-high standards.
Mastering the curtain making process ensures both aesthetic appeal and functional durability in the final product.
If you want to know more, please feel free to contact us
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