The quality inspection of mesh bags is mainly carried out in the following aspects: mesh-bags-quality-inspection
First, appearance detection:
Color and color: Observe whether the mesh bag color is uniform, there is no obvious color difference, dark or too bright color and other abnormalities, the overall color should meet the design requirements.
Surface imperfections: check the mesh surface for broken wire, skipping, knots, burrs, stains, breakage and other defects, these problems may affect the use of mesh bags performance and aesthetics.
Shape and size: calipers, rulers and other tools to measure the length, width, height, mesh size and other dimensions of the mesh bag, should be in line with the specified tolerance range, mesh bag shape should be regular, no distortion, deformation phenomenon.
Second, physical properties testing:
Tensile strength: use the tensile testing machine, fix the mesh bag on the fixture, stretch at a certain speed, record the maximum tensile force when the mesh bag breaks, should reach the strength standard required by the product design, to ensure that it is not easy to rupture in use.
Tear strength: Tear test machine is used to carry out tear test on the mesh bag to measure its ability to resist tearing, the tear strength is too low may lead to mesh bags in the uneven force is easy to tear.
Puncture resistance: Puncture the mesh bag with the specified puncture head and speed by puncture testing machine, observe the breakage of the mesh bag after being punctured, evaluate its puncture resistance, and ensure that it is not easy to be punctured when contacted by sharp objects.
Friction resistance: Through the friction testing machine, simulate the friction of mesh bags in actual use, detect the degree of surface abrasion, in order to determine whether its wear resistance is good.
Third, chemical performance testing:
Aging resistance: put the mesh bag into the aging test chamber, accelerate the aging process of the mesh bag by simulating high temperature, ultraviolet rays and other environmental conditions, detect its performance changes after a certain period of time, such as the rate of decline in tensile strength, changes in appearance, etc., to assess its aging resistance.fruit mesh bags
Chemical resistance: Soak the mesh bags in different chemical solutions, such as acid, alkali, salt solution, etc., observe its appearance, size, physical property changes after a certain period of time, to determine its chemical resistance.
Fourth, other performance testing:
Air permeability: using air permeability tester, testing the air permeability of mesh bags, to ensure that the amount of air permeability in line with the requirements of the product use, for the need for air permeability of the items packaged is particularly important.
Shading: If the mesh bag has a shading requirement, you can use the shading tester to detect the degree of shading on the light, to ensure that the specified shading rate.
