The force required to pull apart two components connected by an adhesive is measured with a peel adhesion test equipment. Learn to know about how to use lab instruments used in the packaging industry.
Use:
- Quality Control –The bonded components must meet a minimum bond strength value.
- Adhesion Cure – Determines the optimum temperature and pressure required to achieve maximum bond strength.
- Adhesion Properties – Determine the effect of temperature, humidity, and environmental conditions on bond strength.
90° Peel Test
The 90° Peel Test involves pulling apart two bonded components while maintaining a constant 90° angle. Record the average load required to separate the two specimens over the length of the specimen, expressed in N/25 mm. Other ways to report test results include average top/bottom loads and custom calculations.
Sample Request – Normally we need a set of 5 samples with a width of 20mm and a length of 200mm. They can be cut directly from the product or created under laboratory conditions. One of the two joined components must be flexible enough to bend up to 90° without breaking.
Test Apparatus – The test article is fixed on a freely movable table. Starting at one end of the sample, peel it mechanically or chemically or separate the two components into 40 mm lengths. The single top is fixed to a drive mechanism mounted on a movable traverse.
The two components are separated by the movement of the cutting head. The test speed is usually 300mm/min or defined in the standard. The free-moving table is attached to the head of the cloth using a pulley and cable mechanism so that the horizontal movement of the table occurs at the same speed as the traverse movement and the angle between the two components is constant.
180 Degree Peel Test
The 180 Degree Peel Test maintains a constant angle of 180° when two components of her glued together are peeled apart. Record the average load required to separate the two specimens over the length of the specimen, expressed in N/25 mm. Other ways to report test results include average top/bottom loads and custom calculations.
Sample Request – Normally we need a set of 5 samples of him 20mm wide and 250mm long. They can be cut directly from the product or created under laboratory conditions. One of the two joined components must be flexible enough to bend 180 degrees without breaking.
Test Apparatus – The test article is fixed on a fixed shaft. Starting from one edge of the sample, peel or mechanically or chemically separate the two components over a length of 140 mm. The single top is fixed to a drive mechanism mounted on a movable traverse.
The two components are separated by the movement of the instrument. Test speed is typically 300 mm/min, or as defined in the standard
The Humidity Chamber provides a stable storage environment in which these two key factors (temperature and humidity) can be controlled, helping customers to investigate and analyze product shelf life. After adjusting the environment of the air-conditioned humidity control room to the target humidity point temperature, the air is heated to the set air temperature. Maintaining a constant humidity point and constant air temperature creates a very stable relative humidity (RH).
Uses of the Humidity Chamber
The Humidity Chamber is used in a variety of applications, including maintaining controlled temperature and humidity conditions for drug storage in the pharmaceutical industry, circuit board testing in the electronics industry, and paper testing in the paper industry.
This instrument controls both humidity and temperature, as relative humidity takes into account temperature. Relative humidity is basically the ratio of the amount of water the air actually contains to the amount of water it can hold. Temperature has a big effect on how much moisture air can hold. Thus, the higher the temperature will be, the greater will it have the ability to retain moisture. Humidity is always proportional to temperature. Therefore, to accurately control humidity, temperature must also be controlled.
As with any large machine, there are some maintenance requirements to consider keeping the humidification chamber running smoothly. Electricity, water and ventilation facilities are in place. The chamber should be serviced at least once a year for calibration and preventative maintenance. However, the program should be based on chamber usage and water quality. It is recommended to use water of suitable purity to prevent rapid deterioration of the inner tube. If an upgrade is required, make sure it is performed by a certified technician. This is important as it may void your warranty and otherwise affect controllability and stability.
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