Heat shrinkage tester - recommended

Heat Shrinkage Tester - The recommended heat shrinkage rate of plastic film is related to the shape and dimensional accuracy of the product, which has an important impact on
the aesthetics of flexible packaging.

Proper heat shrinkage can make the packaging compact, especially the uniform longitudinal and transverse shrinkage can make the film have a tighter and more uniform wrapping, prevent unbalanced shrinkage from causing the packaging cover to wrinkle
.

The shrinkage of a film is defined as the rate
of change in the size of the film under certain temperature conditions and over time.

Jinan Sanquan Zhongshi experimental instrument production of heat shrinkage tester, according to the national standard "GB/T13519-1990 polyethylene heat shrinkable film" in the test requirements to the heat shrinkage ratio and heat shrinkage rate of the heat shrinkage film to test, heat shrinkable materials also known as polymer shape memory materials, is a polymer material and radiation processing technology combined with a kind of intelligent material, that is, the use of polymer "elastic memory" principle, rubber and plastic materials as the base material, through mixing, molding, crosslinking, Heating, expansion, cooling stereotyped and made of functional polymer materials
.

Ordinary polymer materials such as polyethylene, polyvinyl chloride, etc.
are usually linear structures, after the radiation of radioactive sources such as electron accelerators becomes a network structure, these materials will have a "memory effect", expanding, cooling stereotyped materials can be re-contracted to return to their original shape
after heating.

The memory performance of heat shrinkable materials can be used to make heat shrinkable pipes, membranes and profiles, the main feature is heat shrinkage wrapped in the outer surface of the object, which can play a role in insulation, moisture-proof, sealing, protection and continuation, and the radial shrinkage of shrinkage materials can reach 50% ~ 80%.


With these special properties, heat shrinkable materials are widely used in chemical industry, oil pipeline sealing anti-corrosion, home appliances, control cables, communications, power cables joint insulation protection and electrical components shielding connection, insulation sealing and other fields
.

Technical parameters specimen size ≤140mm×140mm room temperature - 200 °C temperature control error ±0.
3 °C heating medium Oil bath dimensions 360mm×440mm×320mm (length, width and height) Weight 14Kg ambient temperature 23±2 °C relative humidity 0±5%RH power 220V, 50Hz heating shrinkage tester - recommended