Pressure Gel for Seat & Wheelchair Pads

Pressure ulcers develop when seated pressure over ischial tuberosities and the coccyx exceeds capillary closing pressure (roughly 32 mmHg) for sustained periods; wheelchair users and bedridden patients are at relatively high risk. Gel cushions fight this through immersion and envelopment: a soft gel layer lets bony prominences sink in (immersion) while the material wraps around tissue contours (envelopment), spreading load across a wide area and eliminating peak pressure points. Hong Ye HY-9409 (penetration 150 plus or minus 30, density 0.96) is formulated as a cushion-grade transparent gel that combines soft immersion with enough body not to bottom out: pressure-mapping on wheelchair cushions shows peak pressure reductions versus foam-only cushions, and the gel never compresses-set or heats up like memory foam, returning instantly after every load shift. It is skin-contact safe, odorless and wipes clean with hospital disinfectants.

PRODUCT REQUIREMENTS

Anti-bedsore gel requires: soft immersion without bottoming out; instant recovery with no compression set; pressure peak reduction validated by mapping; skin-contact biocompatibility; tolerance of hospital wipe-down disinfectants; stable support across temperatures; and long-term non-degrading gel body. In cushion detail, the gel must immerse softly under slow body-weight load without bottoming out, then recover instantly with no compression set after fast unloading. Dispensed within 20-40 minutes of mixing and cured to penetration 150+/-30 in 4-6 hours, the gel body does not flow or separate oil. It tolerates quaternary-ammonium, chlorine and alcohol wipe disinfection, and its non-porous surface hides no contamination. It is compatible with PVC/TPU films and fabric backing, with stable support across seasonal temperatures; pressure maps must show a clear peak reduction before design freeze, and batch COA is supplied.

CORRESPONDING PRODUCT MODEL PARAMETERS

Recommended model: HY-9409 - Transparent low-tack grade for intimate apparel, personal-care and body-contact products requiring clarity and skin-safe materials

GRADE SELECTION GUIDE

The HY-94 series offers three standard jelly gel grades for liquid-channel sealing, soft electronic potting and body-contact gel products. Their color, cone penetration, tack and typical applications are described below so users can choose the grade that matches sealing force, shape retention and processing needs.

HY-9400 is a blue grade with cone penetration 200 (0.1mm) and high tack. It is mainly used in HEPA/ULPA filter gel channels and biosafety cabinet seals, and in other applications that require strong adhesion and repeatable re-sealability.

HY-9405 is a blue grade with cone penetration 170 (0.1mm) and medium tack. It is recommended for electronic potting and sensor encapsulation, and for applications that balance softness with dimensional stability.

HY-9409 is a transparent grade with cone penetration 150 (0.1mm) and low tack. It fits transparent gel pads, intimate apparel and prosthetic devices, and other applications that require visual clarity or easy repositioning.

FREQUENTLY ASKED QUESTIONS

Q: How does gel compare with memory foam for pressure relief?

A: Gel immerses and envelops like foam but without compression set or heat buildup; it recovers instantly, so peaks stay low through all-day sitting.

Q: Can wheelchair cushions be disinfected between users?

A: Yes. The gel tolerates quaternary ammonium and alcohol wipe-downs used in hospitals without swelling, hardening or tack change.

Q: Will the gel bottom out under heavy users?

A: Firmness is tuned to body weight and gel thickness is zoned; bariatric grades use firmer penetration and deeper layers to prevent bottoming.

QUALITY ASSURANCE & CERTIFICATION

Every batch of Hong Ye HY-94 series jelly gel is produced under ISO 9001 certified quality management in a dedicated silicone workshop, with incoming raw-material inspection, in-process mixing control and finished-product testing on every batch. Before release each lot is checked for viscosity, mix ratio, cure time, penetration, color and tack, and a Certificate of Analysis (COA) listing the actual measured values ships with every order. Standard grades carry RoHS 2.0 and REACH SVHC test reports; skin-contact and baby-care grades can be supplied with FDA 21 CFR 177.2600 and LFGB Section 30/31 reports and, on request, ISO 10993 biocompatibility testing; flame-retardant grades meet UL94 V-0. Food-contact, medical and export orders are supported by the corresponding compliance files for customer qualification. Hong Ye has manufactured and supplied jelly gel to contractors, filter builders and equipment makers in over 60 countries since 2005, with monthly capacity above 500 tons, batch traceability and multi-language documentation. Application engineers provide grade selection, sample evaluation, on-site or video pouring guidance and after-sales follow-up, and technical data sheets (TDS), safety data sheets (SDS) and test reports are available before order to support tender and audit processes.

CONCLUSION

The market for tank sealant jelly gel in this application area continues to expand as cleanroom construction, electronic encapsulation, automotive electrification, energy storage and consumer product manufacturing drive demand for reliable two-component addition-cure silicones. Hong Ye supports this growth with ISO 9001 certified production, 500-plus ton monthly capacity, complete compliance documentation and responsive application engineering. Buyers evaluating suppliers are advised to look beyond unit price and compare batch-to-batch consistency, documentation completeness, delivery stability and technical service responsiveness, because the cost of a sealing or potting failure - rework, downtime, certification delay or product recall - far exceeds the incremental cost of a quality gel. Choosing the correct grade for the channel, operating temperature and service environment, following the 1:1 mixing and pouring procedure and validating with a small trial batch all help secure a durable seal. Hong Ye welcomes sample requests and application enquiries; our engineers will recommend the HY-9400, HY-9405 or HY-9409 grade that matches the sealing or potting requirement and support qualification from first sample through volume production.