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PEAK INNOVATIONS ENGINEERING HAS THE HIGHLY TECHNICAL TEAM TO DESIGN, TEST, VALIDATE, AND ENHANCE THE BOLTED JOINTS WITHIN YOUR PRODUCT APPLICATION.

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Peak innovations Engineering is an ideal choice for joint testing and development. By relieving your engineers of joint testing, they can focus on engineering improvements increasing revenue and sales. Our experience and expertise allows us to optimize joints, propose cost reduction of labor and material and troubleshoot poor yield.

WHY USE PEAK?

Peak innovations Engineering offers independent third-party fastener, joint or equipment testing. Our in-house lab accommodates immediate testing of proposed designs or changes. Peak’s specialized testing can optimize your process parameters including; torque, force, time, etc. Many of our tests can be performed at the customer’s location if requested.

Polymers Used in COF Testing Machine

Mar 30, 2021 | Blog Posts, COF testing

The friction (COF) coefficient may be the maximum value of your frictional force divided by the regular force. Coefficient friction testing is used to get a range of supplies from lubricants to films to household products (ceramic tiles) to figure out the frictional traits of a material. It can be commonly determined to be the ease by which two surfaces (usually of various materials) slide against one another. It really is the maximum worth in the frictional force divided by the regular force. The dimensionless worth from the COF would be the ratio in the force expected to slide the surface towards the force perpendicular to the surface. A low COF indicates that the surfaces are smoother, e.g., significantly less resistant to a sliding motion. Polymers utilized for film production are often tested dry against a sled having a calibrated load.

You can find two common basic COF testing machines – sliding plane and incline plane. Let’s appear at the distinction between these two.

Sliding Plane

Testing is performed by sliding a metal plane at continual speed beneath a block. The print specimen is attached for the base with the block. The block is connected to a stationary gauge that measures the frictional force between the plane and the block. To simulate a specific use condition, a piece of print or other packaging material could be attached to the block. Static COF could be the quantity generated the immediate motion begins between the surfaces. Kinetic COF is definitely the value indicated soon after motion is established amongst the surfaces.

Inclined Plane

The COF testing machine is usually an uncomplicated and robust device. It can be used for routine measurement and control of static COF. A sample is clamped for the inclined plane; a different is clamped towards the sliding block. The COF testing machine gradually inclines the samples until the block starts to slide and automatically locks and captures the angle of the slide. The tangent of this angle is the static coefficient of friction. Why does it matter? If the static COF is too higher, complications with the stacking and unstacking of cartons, boxes, and sacks will occur. Flexible films may bind when sliding onto filling collars.

When the static COF is also low, problems in sustaining stability in stacks could result and difficulty pulling supplies using automatic processing machinery. If kinetic COF is also high, this can lead to hang-ups along packaging lines, undue folds, erratic web tension, plus a buildup of static electrical energy. If the kinetic COF is also low, guide rolls might not rotate, tracking along the production line becomes irregular, net tensions once again can be erratic, and also, the material will run eccentrically.

Finding the COF proper is largely a process of qualifying a packaging item and then supplying this solution at a constant COF specification based on a given instrument and testing process. Be aware that different instruments and procedures have a poor correlation.

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