Precision silicone overmolding · drawing review → sampling → volume

Silicone overmolding · silicone over PCBA

Silicone Wearable Temperature Monitor

Overmolded PCBA, skin-friendly, continuous tracking

Silicone Overmolding, Continuous Safe Temperature Tracking for Smarter Care

Silicone overmolding wraps the PCBA in one piece, removing the housing and its seams. The soft silicone outer layer sits flat on skin for long-term wear. Mercury-free, replacing glass mercury thermometers.

  • Silicone over PCBA
  • Mercury-free
  • BLE low energy
  • Trend curves
Silicone-overmolded temperature monitor worn on skin, illustration
Illustration: the thin overmolded monitor worn against skin

Process first

Silicone overmolding: the PCBA goes inside

The difficulty in a temperature monitor is not the sensor, it is the structure. The conventional build is board plus plastic housing plus gasket: many seams, more thickness. Silicone overmolding wraps the board directly, turning three layers into one.

One-piece encapsulation

Silicone overmolding covers the PCBA in the cavity; the outer shell and the seal form together, cutting assembly steps and joints.

Soft on skin

A thin silicone wall with rounded edges. No hard corners, no foreign-body feel during long wear.

Sweat-resistant, easy to clean

The overmolded seal keeps sweat out, and the surface can be wiped clean between uses.

Repeatable at volume

Wall thickness and encapsulation completeness decide yield, which depends on venting and the process window. See capabilities.

Sectioned silicone-over-PCBA structure, illustration
Illustration: section through the overmolded PCBA and edge seal

Material and surface feel are project-configurable; selection logic is on materials, and interface validation on testing.

Hardware

A thin build made for long wear

Silicone overmolding keeps the hardware thin, and the build serves one goal: staying on the body for long periods. Nothing is added beyond that.

ItemDescription
FormThin overmolded patch; silicone overmolding fully encapsulates the PCBA
Outer materialSoft skin-friendly silicone, colour and hardness configurable
SensingBuilt-in temperature sensor with continuous automatic capture
Data linkBLE low-energy Bluetooth, paired at short range
WearingAdheres close to skin; thin structure suits long-term wear
EnvironmentMercury-free, replacing glass mercury thermometers and their breakage risk

Dimensions, runtime and ingress rating are confirmed per project specification; measured data is provided at sampling.

Monitoring system

Continuous temperature, not a single reading

Temperature changes over time. One measurement shows a moment; a curve shows the trend.

Automatic capture

The device logs temperature at set intervals, so patients are not woken for repeated checks.

Trend curves

Scattered readings become a curve: onset, peak and settling are visible at a glance.

High-temperature alerts

A threshold breach raises a notice, so attention comes before the next ward round.

History

Records stay available by time, so a shift handover can look back several days.

One-click report

Export a temperature report for a period, for handover and clinician review.

Bluetooth transfer

BLE carries the data at short range with no extra cabling.

Access and data security

Who sees what is decided by authorisation

Temperature is medical data. Tiered authorisation is not an add-on; it is the first layer of the design.

Tiered authorisation

Patient, family, nurse and doctor each hold a different view scope, mapped to their role.

Controlled access

Only authorised staff can view records; permission changes and revocations take effect immediately.

Encrypted in transit and at rest

Temperature data is encrypted while moving and while stored, reducing exposure risk.

Privacy-aligned design

Designed to medical privacy norms and aligned with common HIPAA and GDPR requirements; specific terms follow the deployment region and institutional agreement.

An aid, never a diagnosis

This is an adjunct monitoring tool. It does not diagnose or treat any condition and does not replace clinical judgement.

Nursing dashboard for temperature monitoring and triage, illustration
Illustration: ward temperature and triage view on the central dashboard

What sets it apart

Central dashboard: triage order by temperature risk

Temperature data syncs to the nursing dashboard. The system reorders review priority and triage sequence against risk thresholds, so the febrile or fast-rising patient is seen first.

  • Ward view: bed status and temperature in one place
  • Automatic ordering: priority suggested by risk level
  • Exceptions on top: high or climbing cases surface first
  • Decision support: ordering is a prompt, staff decide

Triage logic is configurable; thresholds and priority rules are set by the institution.

Where it fits

Places that need continuous temperature

Not every setting needs continuous monitoring. These share two traits: single readings are not enough, and staffing is limited.

SettingNeedWhat overmolding adds
Inpatient wardsNight-time swings, handover gapsA curve replaces scheduled waking; handover has evidence
Fever clinicsHigh volume, fast triage neededRisk-based ordering on the dashboard eases manual triage
PaediatricsLow cooperation, frequent checks are hardThin and skin-friendly, no repeated disturbance
Care and rehab homesLong-term care, tight staffingAutomatic capture and alerts reduce rounds
Home monitoringFamily wants remote visibilityTiered authorisation for family, less anxiety
Quarantine and isolation sitesMany people, early detectionOne dashboard view, immediate exception notices

FAQ

Seven questions from procurement and clinical teams

Does overmolding affect accuracy?

No. Sensor position and silicone wall thickness are calculated together at design stage; the overmold is the outer layer and seal, not an obstruction. Sample-stage comparison testing is provided.

Can it be worn continuously?

The outer layer is soft skin-friendly silicone with rounded edges, and the thin build suits long wear. Wear duration and replacement intervals follow institutional policy.

Who can see the data?

Access is role-based: patient, family, nurse and doctor each hold a different scope. Unauthorised users cannot view records.

Does it replace a doctor's diagnosis?

No. It is an adjunct monitoring tool providing continuous temperature and risk prompts. It makes no diagnostic or treatment claim; diagnosis and treatment remain with the clinician.

Why overmold the PCBA instead of using a plastic housing?

A plastic housing needs seams and a gasket, adding thickness and ingress risk. Silicone overmolding wraps the board in one piece: thinner, fewer joints, better for long skin contact.

How is it cleaned and disinfected?

The surface can be wiped clean. Disinfection method and frequency follow the facility's infection-control policy; avoid prolonged soaking and aggressive solvents.

Can data be exported as a report?

Temperature reports and historical curves can be exported by period for handover, charting and clinician review.

Overmolding that sits closer to the body

OEM and ODM supported: structure design for silicone over PCBA, material selection, tooling and volume delivery. Samples and a spec sheet are available.