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Paper Testing

Paper Testing2021-04-07T09:05:47-04:00

Paper Testing

 Model CS-141 MVTR Cell ASTM E398, TAPPI T523
 Model CS-152 Slide Angle Tester ASTM D202, D3248, TAPPI T503, T815
 Model CS-163D-3 Digital ZDT Tester TAPPI T-541
 Model CS-190 Score Ratio Tester TAPPI T-829

MODEL CS-141 MVTR CELL

Description
This cell offers a faster and more simplified method for measuring one of the most important characteristics of packaging material; the rate at which they transmit water vapor. This property is the basis around which many test specifications are written. Therefore, it is necessary for quality control testing by both the manufacturers and the users.

The accepted test methods for water vapor transmission rates are time-consuming. This test method when compared to the General Food’s test provides results to two significant figures compared to three for General Food’s method. The value of this method is to provide rapid results for quality control in the plant. The accepted method is costly not only in test-operation-investment but in the cost of inventory withheld from shipment or use until test results are completed. Tests taking several days are of little use in process control. This is a faster and more simplified method to measure water vapor transmission rates. This method eliminates some of the inconveniences associated with the traditional methods, such as the need for well-trained technicians, extensive and expensive equipment, and a controlled room atmosphere.

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MODEL CS-152 Slide Angle Tester

Technical References
ASTM D 3248
TAPPI T- 503
TAPPI T- 815

Description
The Model CS-152 Slide Angle Tester measures the coefficient of static friction by indicating the critical angle; i.e., the angle at which the test block slides down the plane. The angle is related to the friction of coefficient by the following equation:

Tangent = f
The unit consists of a motor-driven aluminum plate, which elevates at 1.8 degrees per second, and a 4 x 4, 1,280 gram, micarta-faced test block. Means for controlling and leveling the plane and reading the critical angle are provided.

The tester is leveled by means of leveling screws and a bulls-eye level. To operate the unit, set the TEST-OFF-RESET toggle switch to the RESET position. This will set the plane to zero.

Place the specimen (with the surface to be tested facing up) on the plane with the specimen clamp. Clamp the second specimen on the test block and place it on the plane. Position the test block using the positioning device furnished with the unit. This also locates the finger in the photocell. Move the switch to the TEST position to start the test. When the test block slides, the photocell will activate the circuit and stop the motor. Throw the switch to the center position and record the angle.

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MODEL CS-163D-3 Digital ZDT (Z-Direction Tensile) Tester

Technical References
TAPPI T541

Description
The CS-163D-3 Digital ZDT Tester (Z-Direction Tensile) from Standard Scientific is a microprocessor-based evaluation instrument designed to determine the internal bond strength of paperboard materials. This sturdy, compact unit has been redesigned to increase testing accuracy, reliability, and ease of operation in both laboratory and production settings. Specimens are easily mounted to test plates with double-sided tape. A self-aligning test head compensates for any lack of sample surface parallelism ensuring reproducible batch results. The operator simply presets the test dwell time and compressive force. At test completion, the total force required to split the sample is digitally displayed.

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MODEL CS-190 SCORE RATIO TESTER

Technical References
TAPPI T 829

Description
The CS-190 Score Ratio Tester is designed to determine the effectiveness of the score by measuring the relative strength of the scored board versus the unscored board. The “Score Ratio” is the ratio of the maximum force required to break the scored specimen to the maximum force required to break the unscored specimen multiplied by 100 so as to be expressed in percent. A score so poor that the full strength of the unscored specimen is retained would give a score ratio of 100%.

The specimen rests on the top of the yoke which is raised by uniform upward motion against the score bar. The score bar is attached to a force indicator. The time for a complete test after inserting the specimen is 12 seconds.

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