[ Products · Flexible Composites ]
Flexible Composite Insulation Materials
Multi-layer laminated constructions for slot liner, phase and wedge insulation.
Flexible composites are laminated constructions that combine a film dielectric core with non-woven or paper faces — the family that includes DMD, NMN, NHN and DDP. This category page covers the construction principle and the less common lay-ups; the volume grades have their own model pages.
The reason composites dominate slot insulation is that no single material does all three jobs well. Film provides dielectric strength, the non-woven face provides mechanical protection and varnish absorption, and the lamination holds them together through the slot insertion process.
Custom lay-ups are more available than most buyers assume. If a standard construction is close but not right — wrong total thickness, wrong face material, wrong width — a custom lamination is often viable at moderate volume.
[ Grades ]
Grades in this category
Detailed pages for each grade — with full specification tables — are in preparation. In the meantime, ask us for the specification of any grade below and we will send it.
DDP
Class B / FPolyester non-woven / film / non-woven composite for motor slot and phase insulation.
Detail page in preparationNeed the specification for one of these now? Ask us directly — we will send what has been confirmed.
[ Selection ]
How to choose within this category
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Total thickness against slot fill
The composite competes with copper for slot space. Getting the thickness right is usually worth more than optimising any single layer.
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Face material sets the class
Swapping a polyester face for aramid is what moves a construction from Class F to Class H. The film core is often unchanged.
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Custom lay-ups are available
If the standard grades bracket your requirement without hitting it, a custom lamination is worth asking about before you overspecify.
Typical applications
[ Buying questions ]
Ordering flexible composites from China
Are you a manufacturer or a trading company for flexible composites?
Both. Material comes from our production partners in Xuchang and Jiaozuo, which gives factory-level pricing and the ability to verify what you are buying. Because we are not tied to one line, we can also tell you when something is better made elsewhere instead of selling you what we happen to run.
What is the minimum order quantity?
It depends on the item and whether it is a stock grade or made to your width. Small quantities across several materials usually consolidate into a workable shipment even where no single line would clear a factory minimum. Send your list and we will tell you what is workable.
Can we get samples before ordering?
Yes, and for a first order we would encourage it. Sample material is generally free; freight arrangement varies by destination and we will confirm which applies when you enquire.
Can you supply cut or slit to our dimensions?
Yes. Slitting rolls to working width and cutting sheet to drawing are both standard. Tell us the dimensions and, for rolls, your preferred core and roll diameter so the material fits your equipment.
What are the payment terms and lead time?
For a first order, terms are usually a deposit with the balance against shipping documents. Lead time depends on whether items are stock grades or made to your specification — we will give a date against your actual list rather than a general figure.
Which ports do you ship from, and can you quote DDP?
Most shipments go through Qingdao or Shanghai. We can quote FOB, CIF or DDP depending on how much of the import side you want to handle. Tell us your destination port and we will confirm routing and a realistic door-to-door time.
Do you provide test reports or certification?
What is available varies by material and production source. Rather than claim blanket coverage, tell us what your application or your customer requires and we will confirm what can be provided for that specific material before you order.
Can this category ship together with other materials?
Yes — mixed containers across categories are standard for us rather than an exception, and for most transformer and motor builders it is the sensible way to buy.
Tell us what you need to buy
Send the grades, thicknesses and quantities — or just describe the machine you build. We reply within one working day, and we will tell you plainly if something is outside what we can supply well.