Comprehensive Testing of Insole Materials: Thickness,Flexing Index,Abrasion,and Water Absorption/Desorption-gester-instruments.com

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Comprehensive Testing of Insole Materials: Thickness, Flexing Index, Abrasion, and Water Absorption/Desorption July 28 , 2025

Comprehensive Testing of Insole Materials: Thickness, Flexing Index, Abrasion, and Water Absorption/Desorption

Insoles are a critical component in footwear that directly contacts the foot, providing comfort, support, and cushioning. To ensure the comfort, safety, and durability of insoles, a series of tests must be conducted.

Testing Items

The testing items for insoles primarily include the following aspects:

1. Thickness (mm)
The thickness of insoles directly affect their cushioning effect and support performance.

Test apparatus:
Thickness Gauge ( Leather ) GT-KD07
The thickness gauge is used to measure the thickness of vulcanized rubber and leather products. Clamp specimen between up and down parallel round plates. The pointed graduation is the thickness.

Standards:
IS 15298 (Part 1)
BS-903-A38, ISO-4648, AASTMD1813, ISO 2589, SATRA TM48

2. Flexing index (Only applicable for cellulose board)
Evaluate the durability and fatigue performance of insole materials or products under repeated bending and flexing conditions. Simulate the usage conditions of insoles under repeated bending conditions to test their fold resistance. Insoles with good fold resistance are less likely to break or deform during prolonged use.

Test apparatus:
Fibre Board Flexing Tester GT-KB07
Fibre Board Flexing Tester is used to determine flex test for shoe insole fiberboard and applicable for common leather shoes and sneaker insole fiberboard, but not for toe cap, counter-heel, semi-back and special leather shoes and sneaker insole fiberboard.

Standards:
Annex ‘F’

QB/T 1472, BS 5131: 4.2, SATRA TM3

Fibre Board Flexing Tester GT-KB07

Temperature and Humidity Climatic Test Chamber GT-C52
Temperature Humidity Test Chamber is for conditioning of samples prior to testing. It also can be used for a variety of materials of high - low temperature alternating test. The test temperature, humidity, time can be programmed. Provides conditions of temperature form -40degree to +150degree and of humidity form 20% to 98

Standards of climatic test chamber:
CNS, ISO, JIS, ASTM, DIN, BS, IEC, NACE, UL,MIL

3. Abrasion Resistance (400 cycles)
Evaluate the wear resistance of the insole through abrasion tests to ensure it does not wear out or damage quickly after prolonged use.

Test apparatus:
IULTCS & Veslic Leather Abrasion Tester GT-KC01-1
This IULTCS & Veslic Leather Abrasion Tester is used for color fastness testing of leather, plastic and textile. Under the specified pressure, let white wool felt to do reciprocating abrasion to the surface of dye sample. After a specified count, to assess the color fastness of sample by checking the color change and fading of sample and the discoloration of white wool felt. Rubbing Fastness Tester can be used for dry abrasion testing and wet abrasion test.

Standards:
cl. 7.3.2.1 IS 15298 part 1
DIN 4843, ISO 11640, SATRA PM 173, AS/NZS 2210.2 section7.3
QB/T 2537, GB/T 20991 section 7.3, ISO 20868,
EN ISO20344 section 7.3, ISO 17700 Method A, GE-29

IULTCS & Veslic Leather Abrasion Tester GT-KC01-1

4. Water Absorption, mg/cm2 and Water Desorption, percent
Test the moisture absorption properties of the insole material to ensure it remains dry and comfortable during use. This is typically assessed through Water Absorption and Water Desorption tests.

Test apparatus:
Insole / Insock Absorption and Desorption Tester GT-KC07
This Insole / Insock Absorption And Desorption Tester is used to determine the water absorption and desorption of insole and insock for various shoes. The specimen, placed onto a wet base plate, is submitted to repeated flexing during under a given pressure (in the same manner as the insole of a shoe during working).

Standards
EN ISO 20344 section 7.2 , GB/T 20991 section 7.2
EN ISO 20347 section 5.7.3 AS/NZS 2210.2 section 7.2
EN 12746, ISO 22649, SATRA TM220, BS 3144 section 22
ISO5404, cl. 7.2.2 of IS 15298 part 1

Insole / Insock Absorption and Desorption Tester GT-KC07

The quality and performance of insoles directly affect wearing comfort and foot health. Through comprehensive insole material testing, the safety, comfort, and durability of insoles during use can be ensured.