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Box Compression Tester

Bursting Strength Tester

Paper Core / Cone Compression Tester

Moisture Oven / Analyser

Ink Rub Tester / Scuff Tester

Mini Carton Compression Tester

Coefficient of Friction (COF) Tester

Pouch Compression / Pouch Burst Tester

Tensile Strength Tester

Torque Tester

Bottle / Jar Compression Tester

Leakage Tester

Testing Equipment

Rohit Instruments / Test Techno Consultants are India's Leading & Largest manufacturer & exporter of Quality Testing Equipment for the Paper, Plastic and Packaging Industry. We offer the world's widest range of Compression Testers, Crush Testers, Tensile Testers, Torque Testers, Burst Testers and many other Material Testing Equipment for Paper, Plastic and converted products used in Packaging. Our equipments confirm to a international standards such as ISO / ASTM / TAPPI / BS / DIN / JIS / BIS, etc.

We are India's most preferred packaging testing equipment brand.

Box Compression Tester

Box Compression Tester

This is an equipment to test the stacking load carrying capacity of Corrugated Cartons.

Top-to-bottom compression strength of corrugated cartons is the most appropriate performance specification related to stack-ability characteristics and is the index of the overall quality of the carton.

The compression strength test takes care of almost 90 - 95 % of the quality requirements.

Principle of loading:

  1. Constant rate of Loading.
  2. Constant rate of Travel.
This equipment confirms to major international specifications like ISO / ASTM / TAPPI / BS / DIN, etc.

Capacities Available :

500 Kgf, 1,000 Kgf, 2,000 Kgf, 5,000 Kgf, 10,000 Kgf

Models available :

Various models starting from Economy Analog models to the high-end Fully Automatic Computerized models.

This equipment is relevant to :
  1. Carton Manufacturers.
  2. End-Users of Cartons.
  3. Research Institutions.
  4. Packaging Development centers.

Request for Quotation

Bursting Strength Tester

Bursting Strength Tester

This equipment confirms to TAPPI / ASTM / ISO standards and is suitable to test the Bursting Strength (BS) of :
  • Paper,
  • Kraft Board and
  • Corrugated Fiber Board
Definition :

Bursting strength of a material is defined as the maximum hydrostatic pressure required to produce rupture of the material when a controlled and constantly increasing pressure is applied through a rubber diaphragm to a circular area.

Significance :

For Paper (TAPPI T 403):

Bursting strength is widely used as a measure of resistance to rupture in many kinds of paper. The test is relatively easy and inexpensive to make and appears to simulate some end use requirements.

For Kraft Board (TAPPI T 807):

The bursting strength test of paperboard, including linerboard, 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 on their formation, internal sizing, and, to some degree, the surface treatment.

While bursting strength is an empirical property, this test, in combination with grammage (basis weight), serves to define “standard grades” in commerce.

For Corrugated Fiber Board (TAPPI T 810):

The bursting strength of combined board is primarily an indication of the character of the materials used in manufacturing a fiberboard box and has value in this respect.

Bursting strength of combined board is an optional requirement of the various carrier regulations for shipping containers. The bursting strength of the component paperboard is an important control test in the paperboard mill since the conformity of the finished container is generally controlled by the bursting strength of the paperboard.

Triple-wall corrugated board cannot be tested suitably by the bursting method. Testing of double-wall board is of questionable accuracy since it is rarely possible to get sufficiently simultaneous bursts of the multiple facings.

The test is simple and rapid to execute, but it must be recognized that it is subject to serious errors if instrument, diaphragm, and gages are not properly maintained or if improper procedures are used

Capacities Available :

Paper Tester : 0 - 6 kg/cm2
Kraft Board Tester : 0 - 10 kg/cm2
Corrugated Board Tester : 0 - 10 & 0 - 25 kg/cm2

Models available :
Various models starting from Economy Analog models to the high-end Fully Automatic Computerized models.

This equipment is relevant to :
  1. Paper Mills.
  2. Carton Manufacturers.
  3. Heavy End-Users of Paper and Cartons.
  4. Research Institutions.
  5. Packaging Development centers.

Request for Quotation

Paper Core / Cone Compression Tester

Paper Core / Cone Compression Tester

This is an equipment to test paper tubes / cores & cones for:
  1. Radial Compression / Crush.
  2. Flat Horizontal Compression / Crush.
  3. Flat Vertical Compression / Crush.
Significance :

Paper tubes, bobbins & cones are used as yarn carriers while paper cores are generally used for paper & plastic film reels.

If the core / cone is being used as Packaging Media, then Flat Crush is considered relevant. If however the core / cone is being used as a carrier or winding medium, then Flat Crush is irrelevant. When used as a winding media, the forces acting on the carrier act radially inwards and hence the performance of the carrier can be predicted suitably only by the Radial Crush method.

It is designed in such a manner that gradually increasing force is generated & applied on 66% of the surface of the carrier.

The sharp collapsing point can be easily detected and a suitable reading can be taken.

The collapsing force, which the carriers are capable of resisting, is dependent upon the following factors:
  1. Quality of paper.
  2. Quantity of paper.
  3. Quality of adhesive.
  4. Manufacturing process.
  5. Moisture content in the carrier.
  6. Physical size and dimensions.
It is very difficult for a user to know all the above factors and their influence on the strength of the carrier. It is equally difficult for a manufacturer to know the effect of each variable quantitatively.

But it is very easy for both the user and manufacturer to differentiate between good and bad and adopt a suitable standard of monitoring the quality of the carrier.

Salient features :
  1. Machine designed on proven principle of pneumatics.
  2. Easy and safe to operate.
  3. Skilled manpower is not required.
  4. Zero maintenance machine.
  5. Provides in - house quality control system at affordable price.
  6. Highest degree of consistency and reliability.
Capacities Available :

300 Kgf, 500 Kgf, 1000 Kgf, 1200 Kgf and 2000 Kgf.

Models available :

Various models starting from Economy Analog models to the high-end Fully Automatic Computerized models.

This equipment is relevant to :
  1. Core / Cone Manufacturers.
  2. End-Users of Paper Cores / Cones.

Request for Quotation

Moisture Oven / Analyser

Moisture Oven / Analyser

An instrument to scientifically evaluate the moisture content of a given substrate such an paper, board, or any other material in powder or leafy form.

Confirms to TAPPI T - 412

Consists of a 400 watts Drying Oven with a microprocessor controlled digital temperature indicator-cum-controller capable of maintaining the internal temperature at 105 +2???oC. with free circulation of air.

To be used with a Digital Balance of high accuracy (0.01 gram or better).

Significance :

Moisture is significant for economic reasons and for its effect on such properties as printability, shrinkage, dimensional stability, physical strength, and paper runnability.

Instant Moisture Meters (Portable / Handheld) and Digital Moisture Analyzers (Automatic) are also available.

This equipment is relevant to :
  1. Paper Mills.
  2. Carton Manufacturers.
  3. Heavy End-Users of Paper and Cartons.
  4. General Industry.
  5. Research Institutions.
  6. Packaging Development centers.

Request for Quotation

Ink Rub Tester / Scuff Tester

Ink Rub Tester / Scuff Tester

This is an equipment to evaluate the Print Quality / Rub proofness of prints on a substrate.

Good Print Quality is a perfect combination of Good Ink + Good Substrate + Good Process + Good Drying. If any of the above factors go wrong, the result can be disastrous.

The most commonly used method to evaluate print quality is by rubbing 2 printed surfaces against each other. However if this is done manually, the amount of pressure applied during rubbing cannot be quantified and kept constant. Moreover it is difficult to keep the plane of contact constant and keep a track of the number of rubs. Hence making this method highly Operator Dependent.

The Sutherland Rub Tester or the Patra Rub Tester overcomes this by rubbing 2 printed surfaces against each other (face-to-face) in the same plane, at a constant pre-determined speed, under a constant rubbing pressure.

This equipment can also be used to evaluate color transfer from printed / coated surfaces during rubbing.

This equipment confirms to international specifications of TAPPI – T-830 / ASTM D-5264-92 and PATRA / PIRA / BS - 3110.

Models available :

Various digital models with non-contact type rub counters, Auto-stop facilities, Speed Indicators, etc.

This equipment is relevant to :
  1. Printing / Processing / Converting houses.
  2. Heavy End-Users of printed material.
  3. Ink Manufacturers
  4. Research Institutions.
  5. Packaging Development centers.

Request for Quotation

Mini Carton Compression Tester

Mini Carton Compression Tester

Normally the stiffness value (Taber) of Duplex Board is taken as an indicator of the rigidity of Printed Duplex Board Cartons. However the results shown on a stiffness tester cannot be properly understood or co-related with the performance of the mini carton.

This is an equipment to evaluate maximum compressive force a carton can withstand before failing. This reading can be easily co-related with the stackability of individual printed cartons or of the larger shipper cartons.

Principle of loading:
  1. Constant rate of Loading.
  2. Constant rate of Travel.
Capacities Available :

100 Kg, 300 Kg and 500 Kg

Models available :
Various models starting from Economy Analog models to the high-end Fully Automatic Computerized models.

This equipment is relevant to :
  1. Printed Mini Carton Manufacturers.
  2. Heavy End-Users of Mini-Cartons.
  3. Research Institutions.
  4. Packaging Development centers.

Request for Quotation

Coefficient of Friction (COF) Tester

Coefficient of Friction (COF) Tester

This is an equipment to check the Coefficient of Static Friction (COF) as well as the Coefficient of Static Friction (COF) between Paper - Paper, Film - Film, Laminates - Film / Metal, etc

Definitions :

The coefficient of friction is the ratio of the frictional force resisting movement of the surface being tested to the force applied normal to that surface (the weight of the material above that surface).

The static coefficient is the ratio of the force resisting initial motion of the surface to the normal force.

The kinetic coefficient (not determined by this method) is the ratio of the force resisting motion of the surface to the normal force once the motion is in progress.

Significance :

The coefficient of friction of packaging materials indicates how packages made from that material will perform in many critical applications.

The COF values are directly related to the optimum working of films or laminates on F.F.S machines used in packaging of products in pouches. While excessive friction will lower down production speeds, the lower friction may cause slippage and improper pouch formations.

The coefficient of friction of printing and writing papers is an indicator of the ease with which the top or bottom sheets of a stack of paper will slide across the succeeding sheet, such as occurs on the infeed of a printing press or the sheet transport into a copier machine. A minimum value of coefficient of friction is required to prevent doublefeeding of any sheets.

A high coefficient of one surface of paper or paperboard (containerboard) to itself means that containers having that surface will tend to resist sliding in unit loads. A low coefficient may indicate potential problems with the packages slipping from the load. The equipment confirms to various International standards like TAPPI T - 549.

Models available :

Various models starting from Standard Digital models to the high-end Fully Automatic Computerized models.

This equipment is relevant to :
  1. Paper Mills
  2. Printing / Processing Houses
  3. Plastic Film Manufacturers.
  4. Convertors / Laminators
  5. Heavy End-Users of above.
  6. Research Institutions.
  7. Packaging Development centers.

Request for Quotation

Pouch Compression / Pouch Burst Tester

Pouch Compression / Pouch Burst Tester

This is an equipment to test the Seal Integrity / Seal Strength of liquid / semi-solid filled pouches with or without gas / air, such as shampoos / oil / tea leaves in pouches / wafers / chips packed on FFS machines.

Significance:

When a master carton fails due to compressive load in stacking / warehousing, the palletized load gets transmitted to the individual pouches. This load generates extra pressure inside the filled pouches and can cause seal failure resulting in leakage of liquid / solid / gas from failed seal joint.

It is desirable to know the maximum load causing seal / seam failure in pouch.
This maximum load resulting into failure of weak seal is called Pouch Burst Strength or Pouch Compression Strength.

Principle of operation:
  1. Constant rate of Loading.
  2. Constant rate of Travel.
Types of tests:
  1. Dynamic Compression Test (Destructive) – Press Till Failure
  2. Dynamic Compression Test (Non-Destructive) – Press Till Setpoint
  3. Static Compression Test (Pressure Decay Test) – Press and Hold under preset force, for preset time.
Capacities Available :

300 Kg, 500 Kg, 1000 Kg, 1500 Kg, 2000 Kg.

Models available :

Various models starting from Economy Analog models to the high-end Fully Automatic Computerized models.

This equipment is relevant to :
  1. Plastic Film / Laminate manufacturers.
  2. Pouch / Sachet Manufacturers.
  3. Filling / Packing Units of Liquid / Gas filled products.
  4. Research Institutions.
  5. Packaging Development centers.

Request for Quotation

Tensile Strength Tester

Tensile Strength Tester

This is a Single-Column generic Tensile Testing machine which can be designed to perform any or all of the following tests with high accuracy :
  1. 180% Peel Strength Tester of Pressure Sensitive Adhesive Tapes / Labels.
  2. Inter-Layer Bond Strength Test (T-Peel Test) of Laminates.
  3. Seal Strength Test of Laminates
  4. Tensile Strength Test of Plastic Film / Laminates
  5. Tensile Strength Test of P.P. Strapping
  6. Tensile Index Test of Paper
  7. Tensile Energy Absorption (TEA) of Paper
  8. Hologram Release Test for Security Holograms (Tamper Evident)
  9. Silicon Release Test for Silicon Coated Paper.
  10. and many other types of tests.
This equipment confirms to various International Standards like ASTM, ISO, IS, BIS, DIN, etc.

Capacities Available :

Max. Load
Least Count / Resolution
100 gram
0.01 gram
1000 gram
0.1 gram
3 Kg
0.5 gram
10 Kg
1 gram
30 Kg
2 gram
50 Kg
5 gram
100 Kg
10 gram

Other capacities are also available.

Test Speeds available :

Both options of Fixed Speed Drives and Variable Speed drives are available in this model. 

Speed control is done by the microprocessor based controller with menu based system for user friendly speed variation.

Available variable speed range : 10 - 500 mm/min

Other variable speed ranges and fixed speeds are also available as per requirement.

Models available :

Various models starting from Digital Economy models to the high-end Fully Automatic Computerized models.

This equipment is relevant to :
  1. Manufacturers of Plastic Films / Laminates.
  2. Convertors / Laminators and Heavy End-Users of above.
  3. Research Institutions.
  4. Packaging Development centers.

Request for Quotation

Torque Tester

Torque Tester

This is an instrument designed to test :
  1. Opening Torque of Screwed Closures.
  2. Opening Torque of Child-Resistant or Security Closures.
  3. Latching Force of Child Resistant Closures.
  4. Breaking strength of Pilfer-proof ROPP caps.
  5. Hinge-Twist Test of Flip-Top Caps.
Salient features:
  1. Good gripping power.
  2. Peak Hold Facility for freezing of Max. Reading.
  3. A Dead Weight type Calibration System provided on the equipment.
  4. Auto-Calibration facility.
Significance:

On Automatic Production line involving Auto-Capping operation, this Equipment will help
to set the machine for the Optimum Closing and Subsequent Opening Torque.

This will also help in designing the suitable Thread Profile of Plastic Caps for Plastic Bottles as well as for Glass Bottles.

The Opening Torque for Closures is a prime requirement from the User‘s point of view.

Extra High Torque means extra effort by the consumer to open a bottle / jar.

Extra Low Torque means - loose caps. Causing spillage and leakage due to transit vibrations.

Every product has to be designed with an Optimum
Torque Value taking into consideration its end use.
This Optimum Torque Value will lead to an Optimum Closing Torque which needs to be adjusted on your bottling machine to give consistent performance of your package.

Emphasis on the Torque Values during
Design & Development stages can easily predict
Market Acceptability and Performance of your package.
Facility to test Child Resistant Closures available
in Motorized Model.

Capacities Available :

Standard : 50 Kgcm with Least count of 0.01 Kgcm

Multiple Measuring Units (User Settable) :

Kgcm, Lbin, NM, NCm.

Models available :

Various models starting from Digital Economy models to Semi-Automatic Computerized models.

This equipment is relevant to :
  1. Caps / Closures Manufacturers.
  2. Bottles / Tubes Manufacturers.
  3. Mold Manufactures.
  4. Cosmetic Manufacturers
  5. Pharmaceutical Manufacturers
  6. Beverage Manufacturers.
  7. Heavy End-Users of bottles / tubes / caps / closures.
  8. Research Institutions.
  9. Packaging Development centers.

Request for Quotation

Bottle / Jar Compression Tester

Bottle / Jar Compression Tester

This is a compression machine specifically adapted to test the stacking load / top load carrying capacity of Blow Molded bottles & jars.

This machine can also be adopted to test other blow molded products like Trays, Cups, etc.

Top-to-bottom compression strength of corrugated cartons is the most appropriate performance specification related to stack-ability characteristics.

Top Load / Compression Strength also acts as an indicator of the rigidity and uniformity of blow molded products.

Principle of loading:
  1. Constant rate of Loading.
  2. Constant rate of Travel.
Capacities Available :

100 Kg and 200 Kg.

Models available :

Various models starting from Economy Analog models to the high-end Fully Automatic Computerized models.

This equipment is relevant to :
  1. Bottle / Jar / Container Manufacturers.
  2. Heavy End-Users of above.
  3. Mold Manufacturers.
  4. Research Institutions.
  5. Packaging Development centers.

Request for Quotation

Leakage Tester

Leakage Tester

This is an instrument to test various forms of packages for leakage / pin hole.

Principle :

The package (pouch, blister, bottle, etc) is dipped in a suitable size container filled with water. The vacuum is applied to the container. If there is any form of leakage / pin hole in the package, air bubbles will rush out of the package.

Significance :

Pin Holes are one of the largest culprits of product rejections in Food & Pharmaceutical Products.
Pin Holes are not visible to the naked eye but often permit moisture and odor to pass through into the package and spoil the product.
It is extremely important to understand the nature and source of leakage / pin holes.

This equipment is relevant to :

  1. Cosmetic Manufacturers.
  2. Pharmaceutical Manufacturers.
  3. Food & Beverage Manufacturers.
  4. Convertors / Laminators
  5. Heavy End-Users of Packaging.
  6. Research Institutions.
  7. Packaging Development centers.

Request for Quotation

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