Jiede Fabric is a Professional Custom Fashion Apparel Fabric Manufacturer & Supplier Since 2013.
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Jiede Fabric is a Professional Custom Fashion Apparel Fabric Manufacturer & Supplier Since 2013.
1. What Water-Soluble Embroidery Is
1.1 The Essence: Stitch First, Dissolve Later
During stitching, the soluble base provides the tension and support that allow an embroidery machine to execute complex stitching on structures that are far too soft or too thin to be embroidered directly. The threads build a continuous network on the base cloth; once the base is dissolved, that network survives as a self-supporting motif. Dissolving is the one irreplaceable step of the whole process.
1.2 Three Defining Characteristics
· Three-dimensional and translucent — with no base fabric left, the threads themselves are the structure. The result reads like lace: openwork, relief-like depth, clean edges, full motif shapes and excellent drape.
· High design freedom — because the design does not depend on the strength of a base fabric, extremely fine, intricate and continuous motifs (delicate florals, vines, geometric patterns) can be produced, reaching a level of detail that ordinary embroidery cannot achieve.
· A longer process chain — dissolving, rinsing and heat-setting are extra post-processes compared with ordinary embroidery, and the soluble base is a single-use consumable. The craft is therefore more complex and the unit price is normally higher than that of standard embroidery.
Additional advantages include customisable motifs, the option of adding sequins or beads for extra richness, no chemical residue, a soft hand feel and good colour fastness.
2. Principle and Classification
2.1 Process Principle
Everything rests on one idea: the carrier must be dissolvable. The base is a water-soluble non-woven (typically PVA fibre) or a water-soluble film. The embroidery thread forms a continuous network on that dissolvable base; after dissolving, only the three-dimensional pattern made of thread remains.
Dissolving is usually carried out in the 30–60 ℃ range, although the threshold differs by base brand and specification, and some high-melting grades require water above 90 ℃. The optimum temperature window is determined by considering both the melting point and the glass transition temperature of the PVA and the polyester fibre — hot enough to dissolve the base completely, yet not hot enough to damage the embroidery thread.
2.2 Classification
2.3 How It Differs from Warp-Knit Lace and Standard Machine Embroidery
In one sentence: water-soluble lace and warp-knit lace both show openwork, but warp-knit lace is generally thinner and cannot match the three-dimensional quality of water-soluble embroidery lace.
3. Core Process Flow
The flow is a five-step sequence: design and digitising → material preparation → stitching → hot-water dissolving → finishing and setting. On the workshop floor it is usually managed as three phases: pre-production, in-production and post-production.
3.1 Pre-Production: Design and Digitising
· Artwork format — vector files (AI, EPS) are strongly preferred so that lines remain smooth and the motif precise. Bitmap files (JPG, PNG) cannot be digitised directly and tend to lose definition in conversion.
· Connectivity — the artwork must be a continuous, interconnected line drawing. Isolated dots or disconnected segments have no support after dissolving and will fall away.
· Minimum line width — a minimum width of not less than 1 mm is recommended. Lines that are too fine lack strength and tend to break after dissolving.
· Density control — avoid packing very dense stitching into a very small area; otherwise the dissolved piece will become stiff and board-like.
· Shrinkage allowance — the motif shrinks after dissolving, so the standard practice is to scale the artwork up by roughly 11 % during digitising to offset boiling shrinkage. Measured shrinkage varies with thread specification; for 120D, 150D and 250D threads it typically falls in the 10 %–12 % range, and 11 % is used as the common mid-value. Before bulk production, always verify the shrinkage rate with your own threads and equipment and correct the allowance accordingly.
· Sample verification — after producing the digitised program, run a sample on the sampling machine to confirm motif appearance, dimensions and shrinkage allowance before bulk production.
Digitising note: before formal digitising the artwork should be pre-treated — soaked and flattened, with transparency adjusted — so that line layers are clearly legible during tracing.
3.2 Pre-Production: Materials and Soluble Film Selection
· Embroidery thread — viscose filament, cotton and polyester are the common choices. Orders with high lustre and colour-fastness requirements usually specify 100 % polyester or anti-pilling polyester thread; haute couture styles may use silk.
· Soluble base / soluble film — two families: cold-water soluble and hot-water soluble. Cold-water film dissolves readily in water at about 20 ℃ (most specifications fully dissolve within tens of seconds, depending on weight and thickness), feels soft, and keeps the hand feel essentially unchanged before and after embroidery, which suits heat-sensitive fashion fabrics and intimate apparel. Hot-water film dissolves more thoroughly and suits dense, substantial motifs.
· Matching the dissolution grade — dense, multi-layer motifs require a film with stronger dissolving capability and higher strength, otherwise residue and white marks can remain.
· Sub-thread (optional) — a special heat-shrinking thread stitched in alongside the embroidery thread; it shrinks during dissolving and makes the lace more rigid and three-dimensional. Designs that must stay soft and flowing should not use it.
· Storage and handling — soluble film must be kept sealed (PE packaging) to prevent moisture and cracking; hands must be dry when handling it, since perspiration or moisture will affect its dissolving performance.
· Supporting materials — water-soluble paper is used as the backing, with polyester or viscose as the face yarn and cotton as the bobbin yarn, combined with a suitable base such as nylon mesh, elastic spandex net or stretch fabric as required by the style.
3.3 In-Production: Stitching
· Pre-machine cleaning — thoroughly remove oil, lint and loose debris from the machine and deep-clean the workshop. Once oil contaminates a light-coloured soluble base or thread, no amount of washing after dissolving can recover it.
· Needle and thread set-up — change to the specified needle size and thread as stated on the process sheet, and use a single thread batch within one order to avoid mixed threads, mixed needle sizes and colour deviation.
· Framing and tension — the soluble base must be framed flat and taut. Too little tension causes the motif to shift and distort; too much tears the base. Multi-layer work requires layer-by-layer registration.
· Stitch selection — water-soluble designs rely mainly on run stitches and satin (edge-walking) stitches, and hardly use fill stitches such as tatami or E-stitch. Proficiency with run stitching effectively decides whether the design succeeds: the stitching must build a continuous skeletal network while still surviving dissolving without breaking or fraying.
· First-piece approval — after every design change or material batch change, stitch a first piece and confirm motif, density and tension before releasing bulk production.
3.4 Post-Production: Hot-Water Dissolving (the “boiling” step)
· Temperature — set according to the base grade. The common window is 30–60 ℃; high-melting grades require above 90 ℃. Higher temperature dissolves faster, but excessive heat damages the thread and accelerates shrinkage.
· Time — the criterion is “fully dissolved, no residue”. Lock the time in through first-piece approval; do not shorten it on the basis of experience alone.
· Water quality and liquor ratio — plenty of water is needed, and the flow must be able to carry away the dissolved gel. Too small a liquor ratio or stagnant water leaves localised residue and a tacky feel.
· Residue inspection — after the bath, inspect each piece for white marks or hard residual film, and repeat the dissolving cycle if necessary.
3.5 Post-Production: Finishing
· Rinsing — rinse thoroughly in clean water to remove all dissolved residue.
· Dyeing and setting — pieces that require colour are dyed to order; those that do not are simply rinsed clean. The wet lace is then laid flat or stretched to the specified shape and dried and set, controlling both shrinkage and final width.
· Hand re-stitching — after the main process, sparse stitch areas and weak connections are reinforced by hand. This is an effective way to raise the final pass rate.
· Trimming and cutting — trim thread ends on the reverse, cut to the motif contour (scalloped or plain edge) and complete the appearance inspection.
4. Materials and Equipment at a Glance
5. Key Quality Control Points
6. Common Defects and Countermeasures
7. Garment Applications and Selection Guidance
Because water-soluble embroidery forms standalone pieces that are three-dimensional, translucent and smooth-edged, it can be used both as a full lace panel and as a local accent in apparel. Our typical garment applications are as follows:
· Evening gowns and bridal wear — three-dimensional lace pieces for the bodice, shoulders, back and skirt. Where depth and rigidity matter, a sub-thread should be added.
· Dresses, tops and blouses — decorative lace at necklines, cuffs, hems and plackets. Where a flowing, soft effect is wanted, use no sub-thread or specify a cold-water soluble film.
· Intimate apparel and sleepwear — cold-water soluble film gives the soft, skin-friendly result required; choose viscose filament or cotton thread and avoid high temperatures that would damage elastic mesh.
· Qipao and Chinese-style formalwear — decorative collar, placket and slit trim; for childrenswear, mainly cuff and hem accents.
· Five parameters to confirm together at selection stage: finished width, motif repeat, dissolution grade of the soluble film, whether a rigid hand feel (sub-thread) is required, and whether tonal multi-colour embroidery or sequin/bead overlays are needed.
8. Development Path and Closing Notes
One of the earlier systematised process methods for water-soluble lace dates back to a patent application filed on 24 July 2003 by Ding Tailu (Qingdao Arts & Crafts Group) entitled “Process Method for Making Water-Soluble Lace” (patent number 03144032, published 21 July 2004). It already set out four main steps — base cloth preparation, determination of process parameters, setting and dissolving — and established the basic framework still used in water-soluble lace production today.
Today, beyond plain white and solid colours, water-soluble embroidery has expanded its visual range through multi-colour embroidery and mixed materials such as cotton thread, metallic thread, sequins and beads. It has become an important craft linking traditional lace art with modern digital production, and holds a stable position in haute couture and fashion apparel.
For a production team, the yield of water-soluble embroidery is decided by three things: the connectivity and line width of the artwork (whether it can be stitched at all), the controllability of dissolving and shrinkage (whether the dimensions can be delivered), and the setting carried out during finishing (whether the hand feel and appearance are sellable). Turning these three stages into standard operating procedures with first-piece approval is far cheaper than repairing defects after the fact.
Sources
1. Water-Soluble Lace. Baidu Baike. https://baike.baidu.com/item/水溶花边/9274351 (definition; 30–60 ℃ dissolution window; 11 % digitising scale-up; classification; specifications and materials; patent 03144032)
2. What Is Water-Soluble Embroidery. Zhihu column. https://zhuanlan.zhihu.com/p/54601239 (pre-, in- and post-production flow; run stitch and satin stitch; difference from lace)
3. What Is Water-Soluble Embroidery and Its Process Principle. Lingtu POD Design. https://www.ipoddy.cn/blog/10256 (artwork format and connectivity; 1 mm minimum line width; sub-thread; dissolving above 90 ℃; finishing)
4. What Process Is Water-Soluble Embroidery. Global Textile Network. https://m.tnc.com.cn/ask/436419.html (three-phase production management)
5. What Is Water-Soluble Embroidery and Points to Note. United Textile Net. https://m.onetextiles.com/news/zhishi/1056.html (soluble paper backing; face and bobbin yarn configuration; stitch limitations)
6. PVA Water-Soluble Film and Embroidery Soluble Film Product Documentation. POLYVA. https://www.polyva-pvafilm.com/blog-embroidery-water-soluble-pva-film-a-comprehensive-guide.html ; Haita Technology. http://www.haitakj.com/product/water-soluble-film-5.html (cold-water film dissolution time in 20 ℃ water; consistency of hand feel; sealed storage and dry-hands handling)
Note: This document is a technical compilation intended for internal training and technical communication with customers. Temperature, time and shrinkage figures represent common industry ranges; before bulk production, please rely on measured data from your own equipment, threads and film materials.
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