ISO 11540 Air Flow Test For Writing Instruments
Introductions
This machine is based on the "GB21027-2020 General Requirements for
the Safety of Student Products" standard (i.e., under the pressure
of 1.33KPa, the air ventilation of the pen cap must reach 8L/min),
which is a special testing instrument customised for pen cap air
permeability testing.
(i.e. under 1.33KPa pressure, the air ventilation of the pen cap
must reach 8L/min), and it is a special testing instrument
customised for pen cap ventilation testing. It is a special testing
instrument customised for pen cap aeration testing. It is mainly
used to insert the pen cap completely into
The main purpose is to insert the pen cap completely into an
elastic tube with a suitable diameter, air circulation and pressure
difference at both ends, in order to measure the air flow of the
pen cap.
Test standards
① BS7272-1/-2: 2008 Safety standard for choking prevention of pen
caps and pens plugs
② JTS S 6060:1996 Safety requirements for writing pens and marker
pens caps for children up to and including 14 years of age
③ ISO 11540:1993 Safety requirements for writing pens and marker
caps for children up to and including 14 years of age
④ GB 21027:2007 General requirements for the safety of student
products
⑤ GB/T 24110-2009 Safety requirements and test methods for pen caps
and end caps for import and export pen products
Technical parameter
Flow control valve | ±0.1L/min/resolution 0.001L/min |
Flow meter | can measure air flow at 5L/min and 10L/min, at least accurate to
±0.2 L/min |
Manometer | able to measure at least 4Kpa of pressure. |
Manometer accuracy | ±0.1kpa |
Elastic tube | can be equipped with 7~14mm hose, can measure 6~16mm specification
pen cap |
Control mode | LCC touch screen control |
Pen cap test components | self-locking quick interface, connect the pen cap convenient and
fast. |
Gas source | In the pressure range of 4kPa ~ 50kPa, stable flow is at least
25L/min |