Plastic strapping test items

A common packaging material testing Strapping Seals for sale, also known as strapping or strapping, is an important part of container packaging. The materials are mainly PP and PET strapping tapes, so what characteristics do manufacturers and buyers need to know? ? Next time you will understand. Visual inspection (visual inspection) of samples under natural light, including inspection items such as flatness, color, and pattern. Through the test, you can know whether the color of the plastic packaging belt is uniform, the pattern is neat and clear, there is no obvious pollution, no impurities, and no cracking, breakage, perforation and other defects are allowed.

1. Size and size deviation

The dimensional deviation of the plastic packing tape mainly refers to the length deviation, width deviation, thickness deviation, etc., which should be within the specified deviation range.

In this test, you can understand the specifications of the plastic packing tapes produced by yourself. Find out if you meet the technical requirements of the accompanying samples.

2. Tensile strength

Tensile strength is the stress at which a material produces maximum uniform plastic deformation.

This test is an important physical and mechanical performance index of plastic strapping. A tensile load is applied to the transverse direction of the sample, and it is deformed by an external force until it is damaged to understand the tensile stress of the packaging material.

3. Elongation at break

Elongation at break is expressed as a percentage (%) and usually refers to the ratio of the displacement of the sample at break to the original length.

This test is a parameter index reflecting the toughness of the material! Elongation at break is a very important parameter in tensile properties and usually refers to the elongation throughout the process.

4. Weight per meter

The so-called gram weight per meter is the weight of one meter of plastic packing tape.

The most obvious manifestation of this gram weight is the degree of softness and hardness of the plastic packing belt. Generally, plastic packing belts with a heavy gram weight are harder, and plastic packing belts with a small gram weight are softer.

5. Slope

The deflection of Steel Strapping Buckles for sale is also known as plastic strapping straightness and plastic strapping camber. It refers to the degree of natural or left-right deflection of the plastic strapping in a flat and stationary state.