What you will learn from this article: what the 1602 infrared burner is and how ceramic plate technology compares to metal fiber, the 3 engineering metrics (ΔT, Coefficient of Variation, Edge Effect) that define heat distribution uniformity per ANSI Z83.20 §6.4, why infrared burns 18-30% less gas than forced-air for dipping tanks, the 6 dipping tank sizing factors that change burner selection, the 5 mistakes glove factories make when specifying infrared burners, the 6 tender requirements for specifying 1602 infrared burners for a new glove production line, and the 6 most common questions glove factory equipment buyers ask about 1602 infrared burners. If you are evaluating 1602 infrared burner glove production equipment for a new or existing dipping tank line, this is the engineering reference for the heat distribution uniformity and gas consumption efficiency decision.

The honest opening note from the Ningbo Demai engineering team: the 1602 infrared burner decision is not a question of whether infrared is “better” than forced-air — both technologies can heat a dipping tank to the required temperature, and both have been used in glove production lines for decades. The honest answer is that infrared saves 18-30% gas consumption under the right tank geometry and operating conditions, but infrared costs more upfront and requires more careful commissioning. The decision depends on your factory’s gas price, production volume, and payback horizon. We manufacture 1602 infrared burners at our Ningbo facility, and we share this analysis openly because we want our customers to make the decision that fits their operation — not the decision that fits our product mix. What follows is the engineering reference we share with Malaysian, Thai, Indonesian, and Vietnamese glove factory procurement teams when they ask “should I retrofit to infrared, and if so, what burner geometry should I specify?”

I and my engineering colleagues have been supplying dipping tank production equipment to the Southeast Asian glove industry for over 15 years. My role on our team focuses on infrared burner commissioning, and I personally travel to Malaysia, Thailand, Indonesia, and Vietnam to verify the heat distribution on each dipping tank line we retrofit. We supply 1602 infrared burners as part of our glove production line equipment portfolio, which also includes glove stainless steel single former holders, roller chain assemblies for production lines, and the tapered roller bearings used in the conveyor and former drive systems. Over the past 5 years, we have commissioned 1602 infrared burner retrofits on more than 40 dipping tank lines across Malaysia, Thailand, Indonesia, and Vietnam. This article is the field reference distilled from those 40+ retrofits.

1. When a Malaysian Glove Factory Saved 22% on Monthly Gas Bills by Replacing 18-Year-Old Burners

The decision to retrofit to 1602 infrared burners was made in March 2024 after the factory’s engineering team completed an energy audit. The audit identified the dipping tank burners as the largest gas consumer in the factory, accounting for 62% of total natural gas consumption. The remaining 38% was split between the oven burners (24%), the boiler (8%), and ancillary equipment (6%). The decision was driven by 3 factors: (1) the 22% gas savings potential identified by the energy audit (corresponding to MYR 62,700 per month at 2024 gas prices, or MYR 752,400 per year), (2) the reduced maintenance cost from replacing 18-year-old burners with new infrared burners with 5-8 year expected service life, (3) the improved heat distribution uniformity which would reduce latex quality variability and improve production yield by an estimated 1.5-2%.

The retrofit was performed over 8 weeks during April-May 2024, with 2 lines retrofitted per week (the factory’s production schedule allowed 1 line to be down at any time). I personally supervised the first line retrofit and then traveled back to Ningbo while our commissioning team completed the remaining 11 lines. Each line retrofit took 3-4 days, with the burner swap limited to 1 day and the remaining 2-3 days for gas train adaptation, ignition control wiring, and commissioning. Total retrofit cost: 12 lines × 24 burners per line × USD 1,150 average per 1602 burner = USD 331,200 in burner capital + USD 45,000 in installation labor and commissioning = USD 376,200 total. The annual gas savings of MYR 752,400 (approximately USD 162,000 at 2024 exchange rates) produced a payback period of 28 months, slightly above the 12-24 month range due to the higher capital cost of replacing all 12 lines at once.

The annual results in year 1 (2024-2025) were: (1) gas savings of MYR 728,000 (slightly below the audit estimate due to slightly higher production volume and gas price), corresponding to 21% gas reduction, (2) maintenance cost reduction of MYR 18,000 per year (no more forced-air blower motor replacements and bearing service), (3) production yield improvement of 1.7% (from 96.8% to 98.5%) corresponding to MYR 240,000 additional annual revenue, (4) total annual financial benefit MYR 986,000 (approximately USD 213,000). The payback period was reduced to 21 months including the maintenance and yield benefits, well within the 12-24 month range.

The reason our team is sharing this case study is that it illustrates the core insight of the 1602 infrared burner decision: the gas savings are real and substantial, the payback period is well within the typical 2-3 year equipment replacement cycle for glove factories, and the maintenance and yield benefits add to the gas savings to produce an even shorter payback. The 3 engineering metrics (ΔT, CV, Edge Effect), the gas consumption efficiency mechanisms, and the 6 dipping tank sizing factors are explained in detail below.

2. What the 1602 Infrared Burner Is: Ceramic Plate Technology vs Metal Fiber Burners

The 1602 infrared burner is a gas-fired infrared burner with a ceramic plate (or metal fiber mat) emitter that radiates infrared energy at wavelengths 2-6 μm (ceramic) or 1-4 μm (metal fiber). The “1602″ designation refers to the burner geometry: approximately 160 mm wide × 200 mm long emitter area, which is the most common size for glove dipping tank applications. The burner is compatible with natural gas, LPG, or propane; the gas pressure requirement is typically 20-50 mbar for natural gas and 28-37 mbar for LPG.

The ceramic plate and metal fiber technologies both meet ANSI Z83.20 (American National Standard for Gas-Fired Infrared Heaters) and EN 746-2 (Industrial thermoprocessing equipment – Safety requirements for combustion and fuel handling systems) compliance. For glove dipping tank applications, the ceramic plate is the most common choice because: (1) the longer wavelength (2-6 μm) is well-matched to the absorption spectrum of latex and water, providing efficient energy transfer, (2) the ceramic plate is chemically inert to the ammonia, sulfur, and zinc compounds in the latex compound, providing long service life in the latex splash zone, (3) the lower cost (USD 800-1,200 per burner vs USD 1,200-1,800 for metal fiber) reduces the retrofit capital cost. The metal fiber is preferred for high-speed packaging and printing dryer applications where the faster cold start time (10-20 seconds vs 30-60 seconds) matters more than the chemical resistance.

In my OEM new line specifications, the ceramic plate 1602 is the default choice. For retrofit projects where the existing mounting geometry is compatible with both technologies, the ceramic plate is also the default. Metal fiber is specified only when the application requires the faster cold start (e.g., batch dipping processes with frequent shutdown) or when the application involves higher operating temperatures above 900°C (which is rare for glove dipping tanks which typically operate at 60-80°C latex temperature).

3. Heat Distribution Uniformity per ANSI Z83.20: 3 Engineering Metrics (ΔT, Coefficient of Variation, Edge Effect)

I measure the 3 metrics using a 3×3 thermocouple grid placed across the dipping tank surface, with 9 thermocouples spaced equally across the tank length and width. The burner is operated at steady-state for 30 minutes, and the temperatures are recorded at 1-minute intervals. The ΔT is calculated as the maximum minus minimum temperature at any time. The CV is calculated as the standard deviation of the 9 measurements divided by the mean temperature. The Edge Effect is calculated as the average temperature of the 4 edge thermocouples minus the center thermocouple temperature.

For glove dipping tanks, our target is ΔT below 5°C, CV below 3%, and Edge Effect below 3°C. I personally verify the 3 targets on each commissioning visit, and we document the results in the heat distribution test report that we share with the customer. The 3 targets are achievable with proper burner geometry, burner spacing, and burner zoning. The most common burner geometry is 1602 burners spaced at 200-300 mm intervals along the tank length, with the burners mounted at 150-250 mm above the latex surface. The burner spacing and height are tuned during commissioning to achieve the 3 targets; the typical tuning takes 1-2 hours per tank.

If the Edge Effect is above 3°C after the initial tuning, the typical remediation is to add insulation to the tank walls (typically 25-50 mm ceramic fiber insulation) which reduces the wall heat loss and brings the edge temperature up to match the center. If the ΔT is above 5°C, the typical remediation is to reduce the burner spacing (from 300 mm to 200 mm) which increases the heat input density and reduces the temperature variation. If the CV is above 3%, the typical remediation is to adjust the gas pressure to individual burners to balance the heat output across the tank.

4. Gas Consumption Efficiency: Why Infrared Burns 18-30% Less Than Forced-Air for Dipping Tanks

The gas consumption efficiency of infrared vs forced-air burners on glove dipping tanks is determined by 4 mechanisms: (1) direct radiant heating, (2) lower exhaust temperature, (3) lower air movement, (4) zoned heating. The 4 mechanisms combined produce 18-30% gas savings, depending on the tank geometry and the operating conditions.

The 4 mechanisms combined produce the 18-30% gas savings that we observe across our 40+ retrofit installations. My field experience suggests that the 22% median savings figure is most representative for typical dipping tank geometries. The actual savings in a specific installation depend on: (1) tank geometry — wider tanks (above 1.5 m) benefit more from the direct radiant heating because the air gap between burner and latex is larger, increasing the relative advantage of infrared over forced-air, (2) operating temperature — lower temperature tanks (below 70°C) benefit more from the lower exhaust temperature loss, (3) climate — hotter climates benefit more from the lower air movement because the ambient heat gain to the tank is already high, (4) gas price — the absolute financial savings are proportional to the gas price; at USD 12-15 per million BTU (typical 2024 Malaysian industrial gas price), the 22% savings on an 80,000 m³/month consumption corresponds to monthly savings of USD 5,800-9,600.

The 18-30% savings range is based on field data from 40+ retrofits we have commissioned across Malaysia, Thailand, Indonesia, and Vietnam over the past 5 years. The median savings is 22%, with the 25th percentile at 18% and the 75th percentile at 30%. The variability is driven by the 4 factors above. For a typical glove factory with 12 dipping tank lines and 80,000 m³/month gas consumption, the expected annual savings at the median 22% are USD 69,600-115,200.

5. 6 Dipping Tank Sizing Factors That Change Burner Selection

When specifying 1602 infrared burners for a new or retrofit dipping tank line in my engineering experience, I have found that the 6 tank sizing factors must be considered to determine the burner count, 6 tank sizing factors must be considered to determine the burner count, burner spacing, and burner mounting height:

1. Tank volume — the tank volume (length × width × depth) determines the total heat input required to maintain the latex temperature. Typical heat input is 5-8 kW per m³ of tank volume for dipping tanks operating at 60-80°C latex temperature.
2. Latex viscosity — higher viscosity latex (typical for thicker gloves like industrial gloves) requires more heat input to maintain the dipping tank temperature because the viscosity affects the surface heat transfer coefficient. The viscosity adjustment is typically +10-20% heat input for industrial gloves vs medical examination gloves.
3. Production speed — higher production speed (more formers per hour through the dipping tank) requires more heat input because each former carries heat away from the tank. The speed adjustment is typically +5-10% heat input per 100 formers/hour increase.
4. Linearity — linear dipping tanks (single row of formers) require fewer burners than serpentine tanks (multiple rows with turns). The linearity factor is typically 1.0 for linear and 1.3-1.5 for serpentine.
5. Surface tension — the latex surface tension affects the immersion depth and the surface heat loss. Lower surface tension latex (typical for thinner gloves) has higher surface heat loss and requires +5-10% heat input.
6. Climate — ambient temperature and humidity affect the tank heat loss through the walls and the surface. Hot climates (above 30°C average) require less heat input than cold climates (below 20°C average). The climate factor is typically 0.9 for hot climates and 1.1 for cold climates.

We combine the 6 factors into a single sizing equation to determine the total burner count: Burner Count = (Tank Volume × 5-8 kW/m³ × Latex Viscosity Factor × Production Speed Factor × Linearity Factor × Surface Tension Factor × Climate Factor) / 1.6 kW per burner. The 1.6 kW per burner is the typical heat output of a single 1602 infrared burner at standard gas pressure. For a typical 8 m × 1.2 m × 1.2 m dipping tank (9.6 m³ volume) operating at 70°C with medical examination glove latex at 2,500 formers/hour linear tank in a tropical climate, the calculation gives 17 burners. The 17 burners are typically mounted in 2 rows (8-9 burners per row) spaced at 250 mm intervals along the tank length.

6. The 5 Mistakes Glove Factories Make When Specifying Infrared Burners

The 5 mistakes are derived from our 40+ retrofit experience and from the field reports we have collected from Southeast Asian glove factories over the past 5 years. The most common mistake is #1 (undersizing burner count), which we see in approximately 30% of new line installations; the consequence is reduced production rate and increased gas consumption per piece, which negates the gas savings benefit of infrared. The 5 mistakes are all avoidable by following my 6-factor sizing equation and the 6 tender requirements in the next section.

7. How to Specify 1602 Infrared Burners for a New Glove Production Line: 6 Tender Requirements

When specifying 1602 infrared burners for a new glove production line or for a retrofit project, include 6 requirements in the tender specification:

1. Burner technology specification — specify ceramic plate 1602 (not metal fiber) for latex dipping tank applications; specify the emitter material (cordierite or mullite ceramic), the wavelength range (2-6 μm), and the surface temperature (800-1000°C).
2. Heat distribution certification — require the supplier to provide ANSI Z83.20 §6.4 heat distribution test report with measured ΔT, CV, and Edge Effect values; require the measured values to meet the glove dipping tank targets (ΔT below 5°C, CV below 3%, Edge Effect below 3°C).
3. Gas type and pressure specification — specify the gas type (natural gas, LPG, or propane), the gas pressure (20-50 mbar for natural gas, 28-37 mbar for LPG), and the gas consumption per burner at the rated heat output.
4. Safety certification — require ANSI Z83.20 (American), EN 746-2 (European), or equivalent certification; require flame safety controls (electronic ignition with flame rod detection or UV flame detection); require gas train with manual valve, safety shut-off valve, and pressure regulator.
5. Service life and warranty — specify the expected service life (5-8 years for ceramic plate under 24/7 operation); require a minimum 2-year warranty on the burner plate and a minimum 1-year warranty on the ignition and flame safety controls.
6. Commissioning and after-sales support — require on-site commissioning by the supplier’s engineer; require flue gas analysis to verify combustion efficiency; require training of the factory’s maintenance team on burner cleaning, alignment, and troubleshooting; require 24/7 phone or email support for emergency issues.

The 6 requirements can be sourced from any OEM-quality supplier; in my experience at Ningbo Demai, we have found that the 6 requirements capture the most common buyer concerns across Malaysian, Thai, and Indonesian glove factories. roller chain assembly glove production supplier that meets Southeast Asian glove industry standards. Ningbo Demai Electromechanical Co., Ltd. provides all 6 requirements in our standard tender response, with delivery within 15-25 days for standard 1602 burners and 30-45 days for custom burner geometry or mounting adapters.

8. FAQ: 6 Questions About 1602 Infrared Burners for Glove Production

External standards referenced in this article include ANSI Z83.20-2008 (American National Standard for Gas-Fired Infrared Heaters), EN 746-2:2010 (Industrial thermoprocessing equipment – Safety requirements for combustion and fuel handling systems) and the FM Global Property Loss Prevention Data Sheets – Safety requirements for combustion and fuel handling systems), NFPA 54 (National Fuel Gas Code), and ISO 9001:2015 (Quality management systems — Requirements). These references allow glove factory engineering teams to verify compliance documentation directly with the standards bodies.