Slimming PE cling film is a kind of cling film with high safety and non-toxicity. On the whole, you will find that the film is water-permeable and breathable. It is especially suitable for food preservation in the later period, but ordinary PE fresh-selling on the market The film not only does not have the above-mentioned advantages, it also has many disadvantages: low transparency and poor anti-fog effect; flexibility is not very good, and it is not very good in stretching; poor shrinkability and poor packaging.
The reason why slimming PE cling film has the above-mentioned advantages is that ordinary cling film can not do the following: on the one hand, because the raw material of PE cling film is crystalline material, the crystallization is relatively simple, so the PE film made in the later stage Transparency, flexibility, and retraction are not good; it is precisely because of the crystallinity of ordinary cling film that it cannot have a good anti-fog effect; Second, the viscosity of the PE material itself is almost zero, and the viscosity is not very good, so The adhesion of the bottom surface of the shallow disk is not good, and the phenomenon of loose disk is very easy to occur in the later stage.
After comparing the thin PE plastic wrap with the ordinary PE plastic wrap, everyone pays attention to the selection of the processing method, the type of substrate, the type of booster and anti-fog agent, the determination of the amount, the flexibility and the shrinkage improvement. It is highly transparent and soft. Attention should be paid to the design of PE cling film:
(1) PE cling film is non-toxic, PE cling film has good water permeability and air permeability, everyone can rest assured to use food preservation;
(2) The viscosity of the PE cling film itself is close to zero, and you can add a certain amount of emulsifier for later shallow tray packaging;
(3) In order to reduce the crystallinity of PE cling film and increase flexibility and shrinkage, you can add a certain proportion of flexibilizer;
(4) PE cling film has no anti-fogging effect, and an appropriate amount of anti-fogging agent needs to be added.