Producing a seamless bra and underwear requires attention to detail and careful planning. Here are the steps for producing a seamless bra and underwear:
1. Material Selection
The first step is to select the right materials. Seamless undergarments require specific types of fabrics such as nylon, spandex, or microfiber. These fabrics are stretchy, comfortable, and provide a snug fit without leaving any lines. It is important to choose high-quality materials that are durable and soft to the touch.
2. Pattern-making
After selecting the right material it’s time to create the patterns for the undergarments. Seamless bras and underwear require 3D patterns which allow the fabric to fit the body perfectly. It is important to create separate patterns for different cup sizes and body shapes. These patterns should be precise and fit exactly to the wearer's body shape.
3. Cutting and screen printing
Once the patterns are ready, the fabric is cut according to the patterns. Please place the underwear fabric cut on the sticky plastic paper.Then place the sticky plastic paper on rack.
Rack for reference:

4. Screen printing underwear bonding silicone on bra fabric
Mesh:30-40(12T-16T)
Plate:steel mesh,Thickness:0.6-0.8mm
Steel mesh:

Semi-automatic screen printing machine:

The sticky plastic paper:

The silicone ink for underwear and bra:

The features of silicone product:
-Superb soft hand feel.
-Excellent adhesive strength.
-Good elasticity.
-Long pot life ,at least one day after mixing catalyst.
-Fast curing.
5.Baking the printed underwear or bra with closed oven when you finish the screen printing with silicone ink


Baking temperature at 100-120℃
Baking time:10-15minutes.
6. Quality Control
After creating the prototype, it’s important to inspect the garment to ensure it meets the required standards. The garment should be checked for fit, construction, and durability. Any adjustments or improvements needed should be made at this stage.
In conclusion, these are the basic steps for producing a seamless bra and underwear. By focusing on quality materials, precise patterns, careful screen printing, adding minimal features, quality control, we can create a comfortable and attractive experience for the wearer. Producing a seamless bra and underwear requires attention to detail, patience, and hard work, but the final result will be worth it.
YR silicone is one best factory to produce silicone ink for bra,underwear,sportswear,socks,gloves,t shirts,etc.
We can supply you puff silicone,HD silicone for high density screen printing,heat transfers,etc.
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