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How Underwire and Wirefree Cups Support Differently
Support in a bra comes from the band and straps, not the foam. Here is how underwire and wirefree cups hold shape differently, and what it means for your spec.
Bra Cup Profile from Shallow to Demi to Full
A bra cup profile is the cross-section geometry of the molded foam - how much it covers and where its upper edge sits. Learn how shallow, demi, and full profiles match different necklines and garment patterns.
Choosing Bra Cups by Body Type and Support Need
Body type changes three things in a molded cup: size run, root width and projection. A PU foam cup factory explains why grading is not scaling, how to turn support need into a signable spec, and why letter sizes belong in your catalogue, not your PO.
Chlorine and Water Resistance in Swimwear Bra Cups
A swim or active cup lives in water, so water uptake, dry time and shape when wet matter more than a flat waterproof claim. A PU foam cup factory explains what to specify, and why standard open-cell foam is not chlorine-proof by default.
What Nursing Bra Cups Need That Other Cups Do Not
A nursing cup is the only moulded cup designed to be folded open several times a day, so crease resistance matters more than sculpting. A PU foam cup factory explains the thickness, ILD, edge and pad allowance changes a maternity programme needs.
How Push Up Padded and Wireless Bra Cups Differ
Push-up, padded and wireless cups usually share the same PU foam. What changes is where the foam mass sits. A moulded cup factory explains the geometry behind each type, the ILD choices involved and the spec mistakes that cause resampling.
How to Choose Bra Cups for Sports and Activewear
Sports cups fail differently from everyday cups. How to match impact level to foam density and ILD, where the molded cup fits in compression versus encapsulation designs, and what to put in the purchase order.
How to Inspect PU Foam Grade Before Accepting Cups
There is no official A/B/C grading scale for bra cup foam. A practical acceptance standard for buyers: the five measurable properties to specify, how to build a sampling plan, and a PO clause you can adapt.
PU Foam vs EVA vs Sponge Bra Cups Compared
PU foam, EVA and conventional sponge behave very differently in a molded bra cup. A side-by-side comparison of breathability, shape retention and durability, plus how to specify material on a purchase order.
How Airflow Holes Make Molded Bra Cups Breathe
Ventilation holes turn a molded PU foam cup into a breathable one. How 1.5-2 mm holes at 6-12 per cup move air, and how to match venting to garment type.
How Lingerie Brands Choose a Bra Cup Supplier
How lingerie brands should evaluate a bra cup supplier in 2026: certifications, in-house tooling, bulk consistency, durability and MOQ.
Why 4-Grade Yellowing Resistance Matters in Bra Cups
Yellowing is the defect that shows up after shipping, not on the production line. What the 1-5 grey scale grade means, the three mechanisms behind UV, phenolic and thermal yellowing, and how Senfeng holds PU foam cups at grade 4 for export.