Paper Testing Instruments

Box Compression Strength, the maximum force developed a test specimen before rupture on the Box Compression Strength carried to rupture under prescribed conditions. Electronic Box compression Strength Tester meets the requirements laid down in the testing standards as per TAPPI standards.

Details :

• In the foremost parts are the platens, a upper and a lower one, for insertion of test specimen. Movable by a load sensor from DC Motor & Reduction Gear,
• The Moveable platen is directly attached to a force signal transmitter. The bottom platen is fixed.
• The Moveable platen  crush  the specimen.
• The initial distance between the middle of the stationary platen and the middle of the movable platen is 100 mm.
• It is possible to alternatively work with different distance between the platens. The compressive length may be selected by loosening the top screw of the upper platen, loosen it and Tight and place it in its higher or lower position, as you require.

Tester Specification :

• Mains Supply - 220 Volts ±10%, 50 cycles (if not otherwise specified in your order and acknowledge by us)
• Load Sensor - 2000 kg or depend on requirment
• Measuring Range -  2000 kg
• Accuracy - Better than ± 1% of force reading, but not better than ± 1 .
• Display - 4 1/2 digit display
• Power Requirement - Capacity 1000 Watt
• Deformation Speed - Selected/Variable
• Automatic return of platens after rapture
• Electronic overload protection at load cell capacity.

We Are prominent Manufacturer, Dealer, Supplier & Exporter of Canadian Freeness Tester in Uttar pradesh, India. We Supply Canadian Freeness Tester All Across india. These Canadian Freeness Tester Are manufactured With High-quality Material. The Canadian Freeness (CF) number of pulp is a measure of the drainability of a suspension of pulp in water, determined and expressed as specified in this method.

A known volume of pulp in aqueous suspension is drained through the fibre mat, formed on a screen plate during the test, into a funnel provided a bottom and a side orifice. The filtrate collected from the side orifice is measured in a cylinder graduated in millimeters, as a Canadian Freeness number of pulp.

Limitation of the Test : This method applies to any kind of pulp with this limitations. The Canadian Freeness test gives acceptable results only if a sufficiently dense mat of fibres is formed on the screen plat. For this reason the test is not recommended for very short-fibred pulps such as those from well beaten hardwood, as most of the fibres may pass through a the screen plate, and high CF number will result although the pulp will drain slowly on the paper machine.
The most reliable results are obtained within the CF number range 30-850.

Basically Cobb Tester consists of a support frame  and a metallic cylinder about 5 cm high  with an internal cross section  of 100.00 cm2 (11.29 cm internal diameter).

Clamping System :
The cylinder is clamped by spring loaded upper plate lined with rubber mat automatically get clamped  as soon  as you release the handle. The base board is covered with a rubber mat. The test piece on top by the mat so that a leak proof scale is formed when cylinder is clamped.

The  lower edge of  the cylinder   is machine smoothed. The inner surface  of the cylinder is provided with a shallow groove which is parallel to the cylinder axis  and bends  over the  rim  of the cylinder.  The groove helps in  draining off the water after test.
 
A further development of the well  known Cobb Sizing Tester. The liquid container, filled the specified  amount of liquid, can be turned up-side down by means of a knob and after the necessary time has elapsed, turned back again, can be used several times before liquid  has to be renewed. The lid is provided  with spring loaded finger.

A stainless steel roll of 20 cm face and weighing 10.0 + 0.5 kg as been provided to apply for blotting the water.

A test piece, placed over a circular elastic diaphragm, is rigidly clamped at the periphery but free to bulge with the diaphragm. Hydraulic fluid is pumped at a constant rate, bulging the diaphragm until the test piece ruptures. The bursting strength of the test piece is the maximum value of the applied hydraulic pressure.

The pneumatic clamping in such a way the clamping pressure against the specimen can be corrected by the adjustment of air pressure regulator. It is important that the specimen is clamped so hard so that it does not slip during testing. The standard clamping pressure is 3.0 kg/cm2.

A bursting strength tester of the hydraulic type consisting of :
Two clamping plates upper and lower clamping and parallel surfaces having a a central circular opening. The lower edge of the opening, Which makes contact with the test piece is slightly rounded, but not so much as to effect the area of the aperture. The pressure is generated by a motor driven piston which forces a liquid contain no air. The motor direction reverses automatically after the sample burst.for instance, pure air free glycerol (96%) or ethylene glycol into a pressure chamber beneath the diaphragm at a rate of 2.9ml/s ± 0.1 ml/s. The hydraulic system designs in such and

Note : Glycerol is preferred to ethylene glycol as the hydraulic fluid because its higher viscosity.

Electronic Bursting Strength Tester meets the requirements laid down in the testing standards as per  TAPPI standards.

In this model the GSM Tester directly gives GSM (grams per sq. meter) weight of the sample. Condition the specimen as per SCAN P-2, The conditioning atmosphere in testing paper and board are Temp.23 +1 C relative humidity 50% +2% A Stainless steel rectangular template size 20x25 cm OR 10X10 cm to cut the paper sample. Place the sample in sample basket on the scale. Read the basis is weight/substance on scale.

Specification :

• Mode A Weight up to 300gm
• Mode B Scale 10 x 10
• Mode C Scale 20 x 25
• Mode D Scale 25 x 40

Digital Stiffness Tester Are manufactured With High-quality Material. The tester are equipped with for results reading according to TAPPI T 556 and SCAN-P 29 in mN to mNm/ The calculation of this specific bending stiffness and its calibration by using the stiffness tester is based on the standard DIN 53 121 “Determination of the bending stiffness according to the beam method” section 3.1.3.1, formula (4).
The assumptions for measuring condition were formed according to following measuring condition.

• Bending angle 50
• Width of specimen 38,1 mm
• Bending length 50 mm

The stiffness tester measures the resistance to bending of the test material by recording the maximum bending force which arises when the test material during content turning speed is turned to set bending angle with set bending lengths.
Bending Resistance: Stiffness of paper is defined as the resistance to bending offered by a rectangular test piece with its longer side parallel to the direction (machine or cross) for which the stiffness is measured. The stiffness is considered to be measured towards the side (top or wire) that is concave during bending

The bending stiffness Tester meets the requirements laid down in the testing standards as per TAPPI standards

Accuracy Better than ± 1% of force reading, but not better than ± 1

Internal Ply Bond Tester is used to measure the internal bond strength of papers. Designed originally to evaluate the de-lamination strength of barrier materials comprised of kraft paper and sisal yarns, the Internal Ply Bond Tester has found many other uses in quality control laboratories in paper industry. The unit is used to measure the average force, in thousandths of ft. lb., required to de-laminate the fibers in the paper specimen, as described by the TAPPI “Useful Methods  403”. Other test includes de-lamination of bonding strength of coated papers stocks, the fibre bonding strength of kraft stocks (“Z” axis tensile) and the ply de-lamination strength of paper board. The Internal Bond Tester mat also be used as a coating pick tester. The procedures for this test are given in the TAPPI “Useful Methods 534”.

General Features :

• A table-mounted unit designed for ease of operation, this model does not require an electrical power source. The unit consists of a base, a sample preparation device and a dual capacity free-swinging pendulum incorporating a ball nose-striking hammer. The pendulum pivots on ball bearings and a striking hammer gives point contact on the aluminum angle of the specimen assembly. The energy of the pendulum may be changed by simple adding or removing weights. The dial has two scales, for light and heavy loads.
• The specimen is held between the base and the anvil of the test fixture by double-sided pressure sensitive tape. Test fixture provide a standard specimen of one inch square, with lamination assembled under calibrated pressure to assure uniform adhesion throughout the samples.

Technical Specifications :

• Load Measuring System: Consist of a free swinging dual capacity, pendulum of 0 to 0.250 and 0.100 and 0.500 ft. lbs. Capacity, a frication pointer of transparent plastic and a calibrated dial to indicate the force expanded by the impact. The pendulum assembly is supported by a cantilevered column, pedestal mounted on a cast iron base.
• A dispenser for a double-sided pressure sensitive tape width 1” is also an integral part of this model and is mounted into the base of the instrument along with the sample preparation apparatus consisting of five positions, each having one base and one angle.
• The aluminum angles are retained in a fixture for ease of alignment and assembly. After the samples are prepared pressure is applied through a cam and a lever. The range of pressure is adjusted from 50 PSI to 200 PSI by changing the capacity washers furnished with the tester.

The Short Span tester is an advanced instrument which yields the national and international standard such as ISO, Tappi, and SCAN etc. The short span compression tester also reduces the factor which gives variation; Tester also reduces loading and unfavorable stress. It also avoids these factors giving result which have a material property unaffected by density and gram mage. The accuracy and repeatability of test result depends on the correct sample conditioning. The internal programming provided the rapid means of setting up the instruments. The facilities such as Peak hold at max load auto return after the completion of that test.

Principle :

• A test specimen, 15 mm wide is clamped in pneumatically operated two clamps, 0.7 mm (0.0276 in.) apart.
• The clamps are forced towards each other until a compressive failure occurs. The maximum force causing failure is measured.

We Supply Taber Stiffness Tester All Across india. These Machines Are manufactured With High-quality Material. Advancetech Stiffness tester (taber type) is used to evaluate stiffness and resiliency properties of materials up to 10,000 Taber Stiffness Units. This precision instrument provides accurate test measurement to ±1.0% for specimens 0.004" to 0.219" thickness. Materials include paper products, cardboard, plastics, metals, textiles, rubber, wire, tubing, felts and other sheet materials.
Incorporated in the Stiffness Tester is a bi-directional pendulum weighing system. Providing an accurate and responsive method for measuring small load increments, this system is a critical component for determining material stiffness or resiliency.

 Tensile Strength, the maximum force developed a test specimen before rupture on the tensile test carried to rupture under prescribed conditions. Tensile Strength (as used here) is the force per unit width of test specimen. Stretch, the maximum tensile strain developed in the test specimen before ruptrure in a tensile test carried to rupture under prescribed conditions. The stretch (or percentage elongation) is expressed in a percentage i.e. one hundred times the ratio of the increase in length of the test specimen to the original test span.

Details :

• Tensile energy absorption (TEA), the work done when the specimen is stressed to rupture in tension under prescribed conditions as measured by the integral of the tensile strength over the range of tensile strain from zero to maximum strain. The TEA is expressed as energy per unit area (test sapn X width) of test specimen.
• Breaking Length, the calculating limiting length of strip of uniform width, beyond which, if sucha strip were suspended by one end, it would break of its own weight.
• Tensile Index, the tensile strength in N/m divided by grammage.

Two horizontally opposed and movable clamping jaws, which hold a specimen 100 mm (4 in.) long under variable tension during the folding cycle, while a slotted folding blade, sliding back and forth between four creasing rollers, folds the paper at 105-125 double folds per minute. The clamps are supported from below on rollers and, while in motion, are freely suspended between tension springs. The folding blade is 0.50± 0.0125 mm (0.020±0.0005 in.) wide, the slot extending somewhat above and below the normal position of the test specimen.

Details :

• The vertical edges of the slot are cylindrical with radius equal to half the thickness of the blade. The four creasing rollers, each 6mm (approximately ¼ in.) diameter and 18 mm (approximately ¾ in.) long, are arranged symmetrically about the mid position of the folding slot and are provided with antifriction or jeweled bearings.
• 6 digit mechanical Counter, to register the number of double folds and to stop the instrument when the specimen breaks with reset knob to make it zero.