| BURSTING STRENGTH TESTER |
OVERVIEW:
Bursting strength is a
widely used measure of resistance to rupture in various
materials. A test specimen is held between two circular clamps
and subjected to an increasing pressure from a rubber
diaphragm. The rubber diaphragm is expanded by a controlled
hydraulic pressure until the test specimen ruptures. The
bursting strength of the specimen is the pressure reading at
the time of rupture.
SIGNIFICANCE : (Why this test
?)
The bursting strength test of paper,
paperboard, including linerboard and corrugated board, is a
composite measure of certain properties of the sheet
structure, principally tensile strength and elongation. In
general, bursting strength is dependent on the type,
proportion, preparation and amount of fibers present in the
sheet and their formation, internal sizing, and to some
degree, the surface treatment. While bursting strength is an
empirical property, this test, in combination with basis
weight, serves to define "standard grades" in commerce.
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Definition : The maximum uniformly
distributed pressure, applied at right angle to its surface
that a test piece will stand under standardized conditions.
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Measuring Unit : Kg/cm2 , Lbs/in2
and KPa. |
Bursting Factor (B.F) of Paper = (B.S. x
1000)/GSM * where B.S. is Bursting Strength in
Kg/cm2,GSM is the substance of Paper in grams per square
meter. |
PRINCIPLE This test measures the
resistance of a test material to a constant increasing
pressure. The Bursting Strength equipment specifications are
different for different materials and are the most important
specification at the time of procurement and
manufacture. |
Recommended for : Paper,
Paperboard, Corrugated board, Nonwovens, Textiles,
Geotextiles, Film, Tissue, Tobacco Leaf etc. |
DESCRIPTION Bursting Strength
Tester consists of a clamping mechanism (two annular plane
surfaces) to hold the sample against the diaphragm, a mounting
and holding head for the diaphragm, a constant pressure
pumping hydraulic cylinder and a electric motor for generating
and releasing the pressure. The clamping surface has fine
concentric tool marks to minimize slippage, specifications for
which are different for different materials in standards. The
Pumping rate is also variable for different materials hence
the testers are accordingly made for paper OR board OR
corrugated board as per various below mentioned
standards. |
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Bursting Strength Tester
Standard Model - BST N2
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| Bursting strength is a widely used measure of
resistance to rupture in various materials. A test specimen is
held between two circular clamps and subjected to an
increasing pressure from a rubber diaphragm. The rubber
diaphragm is expanded by a controlled hydraulic pressure until
the test specimen ruptures. The bursting strength of the
specimen is the pressure reading at the time of
rupture. |
Features:
- Simple construction, open type, body mounted pressure
gauges and panel mounted operating switches.
- Two units of measument (Kg/cm2 & PSI)
- Single push button cycle.
- Dual gauges for greater accuracy.
- Lazy Hand (maximum pointer) for maximum burst reading.
- Heavy duty industrial Bourdon pressure gauges for
greater durability.
- Switch from one gauge to another by opening and closing
of SS valves.
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| Dimensions: Depth : 546 mm (21.5
in.), Height : 698 mm (27.5 in.), Width : 838 mm (33
in.) |
| Weight:
Net weight : 82 kgs, Gross Weight : 135
kgs |
ACCESSORIES C spanner, 3 spare
diaphragms, 250 ml topping up fluid, 1 no. calibration foil
supplied spare with the machine
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CONNECTIONS Electrical : 1 phase, 230
V AC, 50 Hz.
CONSUMABLES Rubber
Diaphragm & Calibration Foil. |
MODELS
- BST N1 - Single gauge 0-7 or 0-35 kg/cm2;
BST N2 - Double gauge 0-7 & 0-35 kg/cm2.
- On request 0-52 & 0-70 available
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STANDARD
COMPLIANCE
- 0-07-35STD meets TAPPI T-807, T-810, ASTM D2529, D738,
AS/NZ 1301, 438,ISO 2759, SCAN P25
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Bursting Strength Tester
Super Model - BST S2
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Features:
- Fully enclosed model.
- Accurate, reliable and trouble free equipment.
- Flat angled gauges for greater accuracy.
- Maximum pointer (lazy hand) for peak value recording.
- Available with single gauge or double gauge model
- Changeover from one gauge to another by a simple switch.
- Pneumatic clamping available as optional feature.
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| VERTEX Digital Bursting Strength Tester BST- D1 |
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DESCRIPTION/Specification
- Bright LCD display of reading with peak hold facility
- Capacity - 50 Kg / cm²
- Display resolution - 0.01 kg/cm²
- One push button operation
- Manual clamping of specimen.
- Five units of measurements (a) Kg/cm² (b) Bar (c) Lbs/in² (PSI) (d) N/cm² &
(e) KPa (Kilopascal).
- Microprocessor based model with printer port facility also available on request.
- Various measuring capacity according to the requirements are available for greater accuracy.
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MODELS
- BST D1 - Digital Indication of Bursting Strength (Economy Model)
- BST D2 - Advanced model with data logging upto 1000 readings, computer connectivity with software to calculate Burst Factor & data analysis, Report generation facility.
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| VERTEX BOX COMPRESSION TESTER - BCT |
DESCRIPTION Corrugated and solid fibre board boxes are subject to compressive forces when stacked and during transportation. It is vital to determine the Compression Strength of the Box in order to make sure that the box will be able to resist the anticipated compressive forces and to determine the load that the box will be able to with stand during transit and storage. This equipment is designed to measure ability of the container resist external compression loads during transit and storage. Compression Strength Test also serves as a useful index of over all quality of the material and workmanship of the box.
The standard capacity of box compression strength tester comes with capacity of 1000kgf. Box compression strength tester having higher capacity to accommodate bigger sizes of box also available.
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STANDARD COMPLIANCE
IS:7028 (Part VI) 1973 & 7028 (Part IX) 1975
TAPPI: T 804 om-02
ASTM: D 4577 - 94/D 642 - 98
FCBM: 14:96
FEFCO: TM 50 1997
Salient Features of Digital model BCT D1:
- Direct Digital Readout of Compression Strength and Deflection
- Mechanical drive system as specified in IS 7028-VI
- Sophisticated electronic controls for precision and easy operation
- Available in Capacities:0-1000 kgf and 0-2000 kgf
- Electronic Digital Display Panel with least count of 1 kgf and Deflection Panel with a least count of 0.1 mm
- Peak-hold facility provided
- Testing speed: 10 ± 3 mm/minute
- Provision of faster speed for approach and return to top of specimen
- Provision for termination of test at pre-selected load (This facility avoids destruction of the box)
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Substance Indicator /Digital GSM Tester
Model - GSM E |
Features:
Separate GSM mode for template size 10 x 10, 20 x 10 and 20 x 20 cm.
GSM - Direct display
Capacity - 1000 GSM
Least count - 10 X 10 - 1 GSM
20 X 10 - 0.5 GSM
20 X 20 - 0.25 GSM
- 24 - bit ? - ? ADC (High resolution).
- Feather touch membrane keyboard with audible indication during entry.
- Display intensity adjustable for longer battery back-up.
- Memory Accumulation.
- Battery voltage display on screen.
- Carat, counting, percentage function.
- Rechargeable 6 V, 1.2 AH SMF battery in-built.
- Compact wind shield (Supplied with the scale).
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| Cobb Sizing Test for Liquid
Absorption |
OVERVIEW:
The test is used for
determining liquid absorptiveness or resilience of treated and
untreated papers, boards, fabrics and other sheet materials.
The test consists of a test apparatus, its 10-kg roller and
blotting paper. The roller method is recommended to insure
better consistency and reliability that can be obtained by
manual blotting or rubbing the specimen. |
SIGNIFICANCE : (Why this test
?)
Water absorptiveness of paper board or other
materials is a function of various characteristics such as
sizing, porosity, etc. The Cobb sizing test can be used to
test absorption or resistance to absorption of water, oil and
other liquids. On Corrugation : The absorption capacity of
corrugating medium has to be controlled in order that it has
the proper receptivity to the corrugating adhesive, which is
an aqueous suspension of starch, for proper adhesion in the
corrugating process. Also a lower Cobb represents superior
resistance to humidity changes and hence takes higher time to
change to atmospheric moisture. |  |
| PRINCIPLE This procedure
determines the quantity of water absorbed by a sample of paper
or other sheet material in a specified time and under
standardized conditions. Other liquids such as ink, beverages,
oil and water based solutions may be used instead of water.
The standard area is one hundred square centimeters (cm2),
into which 100cc of liquid are poured to reach a specific
height of 1 cm. |
DESCRIPTION Cobb Sizing Tester
consists of a hollow metal cylinder or ring (100, 25 or 10 cm2
inside area); a rubberized base plate with a clamping device
to hold the ring against the sample. A pressure adjusting
handle is located on the clamping device to seal off the
cylinder when testing uneven materials where an unjacketed
seal is difficult to maintain. A critical component of this
test is a solid stainless steel roller having a smooth face
20cm wide and weighing 10.0+ 0.5kg. Also required for the test
is a 100ml graduated cylinder, a balance with sensitivity of
0.01g or better, blotting paper and a timer / stopwatch.
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STANDARD COMPLIANCE TAPPI T-441,
IS 1060 (part I),
BS EN 20535,
AS/NZ 1301.411s,
SCAN P12.
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| VERTEX DIGITAL MOISTURE METER MM-D1 |
Features
- Digital large size LCD display
- Test range: 5% to 40%
- Resolution: 1%
- Accuracy: + 1%
- High resolution & quick response
- Data hold function
- Low battery symbol
- Power: one 9V battery
- Dimensions: 126 X 70 X 29 mm
- Weight: approx. 150gm (Including battery)
- Operation Temperature: 0ºC to 40ºC ( 32ºF to 104ºF) 0 -70% rh.
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| VERTEX DIGITAL MOISTURE METER GANN (Germany) |
Features:
- LCD Display
- Measuring Range : 0 to 90%
- Accuracy : + 1%
- Electrode Length : 8mm, Replaceable
- Operating Voltage : Battery 9 V
- Dimension : L140 X W90 X H50 mm
- Weight : 220 gms.
- Application: Wooden Boards, Card Board, Paper, Corrugated Box, etc.
- Package include - Instrument, 9V Battery, spare pins 2 set, protective cover.
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