Paper Tube Compression Tester
Paper Tube Compression Tester
Paper Tubes are generally used for winding yarns and threads.
Material is usually wound on the paper tubes with a little tension or stretch. The paper tubes are expected to withstand the stress caused due to the winding tension of the material they carry.
Depending upon the nature of the material and the effect of the environment (change in moisture and/or temperature), the material may contract / shrink over time.
This compounds the effect of the original winding tension on the paper tube.
These forces are always acting radially inwards on the paper tube, trying to push the walls towards the center.
If the paper tube is unable to withstand the original winding tension or the increased stress due to material shrinkage, it will collapse inwards.
This can make the material unusable in many cases. Or at least prevent mounting the paper tube on the mandrel / chuck of the un-winder.
The strength (resistance to collapsing) of the paper tubes depends upon:
- Quality and Quantity of paper
- Quality and Quantity of adhesive
- Manufacturing process
- Moisture content
- Physical size and dimensions
It is very difficult for a user (paper tube buyer) to know all the above factors and their influence on the strength of the paper tube. It is equally difficult for even a tube manufacturer to know the effect of each variable quantitatively.
But by using the Tube Compression Tester (also known as Collapsing Strength Tester or CS Tester), it is very easy for both the paper tube manufacturer and paper tube user to differentiate between a good or bad tube and adopt a suitable standard of monitoring the quality of the same.
Radial Crush Test :
This method was invented by our founder in 1987.
It uses special test fixtures (called as adopters) to hold the paper core between 2 curved adopters while being pressed.
The profile of the adopter is such that it matches the contour of the paper core, supporting 33% of the core’s outer surface from the bottom and 33% from the top. This allows only the remaining 16.5% on either side to bulge and collapse.
This method is seen to better predict the quality of the paper cores.
Studies / Trials conducted by us showed that 2 paper cores having very similar Flat Crush Test values can still give significantly different Radial Crush Test values, and the cores which had a better Radial Crush Test value, did perform better in the real world.
Technical Specifications of Paper Tube Compression Tester
- Digital Model with Backlit LCD Display
- Electro-Pneumatic Model (Runs on Compressed Air)
- Auto-stop & Auto-return upon completion of Test.
- Testing Principle : Constant Rate of Loading (Slow and gradual increase of force till collapse)
- Direct force measurement. No Calculations Required.
- Peak hold facility for registration of maximum compression force.
- Auto-Calibration facility for quick, user-friendly calibration.
- Choice of Measurement units : Kgf / Lbf / N (User settable from Menu)
- Maintenance free design.
- Optional facility to capture test data on to the PC directly through the software and generate PDF test & calibration reports.
Models Available
Model
P500
Capacity :
500 Kgf
4900 N
1100 Lbf
Working Range :
10 – 100 % of Capacity.
50 – 500 Kgf
490 – 4900 N
110 – 1100 Lbf
Least Count :
0.5 Kgf
5 N
1 Lbf
Accuracy :
0.2% of Capacity
10 Kgf
100 N
20 Lbf
Calibration Weight Required :
50 Kgs
(20 kg + 20 kg + 10 kg)
Included :
- Air Filter + Pressure Regulator.
- RS-232 Data Cable with USB-Serial Convertor are supplied with models / SKUs which have Software (Ending with RS).
Excluded (to be purchased separately) :
- Radial Crush Test Adopters.
- To be ordered for every specific Tube size that needs to be tested.
- Calibration Weights (50 Kgs, to be procured locally by buyer)
Software Options :
- No Software (SKUs ending with NS)
- Regular Software (SKUs ending with RS)
Utilities Required :
- Power Supply (Current : Max 5 Amps) :
- For India (Domestic Model) : 230 Volts A.C., 50 Hz. Clean power.
- For Outside India (Export Model) : As per your country’s power rating.
- Calibration weights (50 Kgs).
- Compressed Air @ 6 bar (87 psi).
- Desktop / Laptop PC (Intel Core i3, 4gb RAM, Win10 OS, 1080p Monitor) or higher.
Warranty : 12 Months (Back-to-Bench)
Terms and Conditions
Delivery / Freight Charges
Prices (if mentioned) on our website DO NOT INCLUDE Delivery / Freight Charges.
Domestic (India) customers will have the option of Freight To-Pay / Freight Prepaid.
Export (Outside - India) customer will have the option of Freight Prepaid or their can collect on their own Courier Account with UPS / DHL / FEDEX, etc.
If you want Freight Prepaid, let us know after receiving the quotation. We will add delivery charges and resend the offer.
Product Lead Time
Lead Time mentioned in the description is a tentative timeline for us to dispatch the product. Please consider additional days for transit period by courier / freight agency. This timeline is on "Best Effort" basis.
Sometimes there can be a delay due to unforseen circumstances beyond our normal control. Delays if any will be intimated to you at the time of ordering.
Product Warranty
Unless otherwise specified in the description, all products and accessories (excluding consumables and spares) manufactured / sold by us are covered under a standard 12 month warranty period.
The warranty is "Ex-Factory" or "Back-to-Bench", meaning the product or defective part will have to be sent back to us for repair or replacement. To and Fro Freight / Courier charges are to be borne by the buyer. The warranty only covers manufacturing defects and not misuse or any other damages.