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PE protective film dissolution method
PE protective film dissolution method, PE protective film, the full name of Polyethylene, is the simplest polymer organic compound, and the most widely used polymer material in the world today. PE protective film is based on special polyethylene (PE) plastic film, and is divided into high-density polyethylene protective film, medium-density polyethylene and low-density polyethylene according to different densities.
With the increase of the industry market and the diversification of demand, the adhesive force of PE protective film has also been divided into various types, mainly: ultra-low viscosity protective film, low-viscosity protective film, medium-low viscosity protective film, medium-viscosity protective film , High-viscosity protective film, ultra-high-viscosity protective film. It is suitable for hard-to-stick materials such as rough-grained aluminum plates. Due to the strong viscosity of the PE protective film, conventional methods cannot be used to remove the adhesive for high strength. Polyethylene has excellent chemical properties and is insoluble in all known organic solvents, which is also a major advantage of the PE protective film.
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Dissolution method of PE protective film: Although PE is insoluble in any solvent at room temperature, it is soluble in aliphatic hydrocarbons, aromatic hydrocarbons and halogenated hydrocarbons at higher temperatures. For example, LDPE can be dissolved in benzene at 60℃, HDPE can be dissolved in benzene above 80~90℃, and both are soluble in toluene, trichloroethylene, tetrahydronaphthalene, decahydronaphthalene, and above 100℃. In petroleum ether, mineral oil and paraffin.
Ultra-low viscosity protective film (ie micro bottom sticky)
Characteristics: Thickness (≥0.03m±0.003), Width (≤1.3), Height (100-1500), Base Material (PE), Peel Strength (≤5g/cm), Temperature Resistance (60), Stretching ratio (>400);
Uses: Easy to use, easy to stick, easy to tear, no glue residue, suitable for organic plates, instruments, display screens, glass lenses, plastic lenses, etc.
Low viscosity protective film
Features: Thickness (≥0.03m±0.003), Width (≤1.3), Height (100-1000), Base Material (PE), Peel Strength (10-20g/cm), Temperature Resistance (60) , stretch rate (>400);
Application: Stable adhesion, good adhesion, good peeling performance, no glue residue, suitable for steel mirror plate, titanium metal, glossy plastic plate, silk screen, nameplate, etc.
Medium and low viscosity protective film
Characteristics: Thickness (≥0.03m±0.003), Width (≤1.3), Height (100-1000), Base Material (PE), Peel Strength (30-50g/cm), Temperature Resistance (60) , stretch rate (>400);
Uses: Stable adhesion, good adhesion, good peeling performance, no glue residue, suitable for furniture polaroids, stainless steel plates, ceramic tiles, marble, artificial stone, etc.
Middle mucosa protective film
Features: Thickness (≥0.05±0.003), Width (≤1.3), Height (100-1000), Base Material (PE), Peel Strength (60-80g/cm), Temperature Resistance (60) , stretch rate (>400);
Uses: Stable adhesive force, good adhesion, good peeling performance, no residual glue phenomenon, suitable for surface protection of fine-grained matte boards and general hard-to-stick materials.
High viscosity protective film
Characteristics: Thickness (≥0.05±0.003), Width (≤1.3), Height (100-800), Base Material (PE), Peel Strength (80-100g/cm), Temperature Resistance (60) , stretch rate (>400);
Uses: Stable adhesive force, good adhesion, good peeling performance, no glue residue, suitable for fine-grained frosted board, aluminum-plastic board, hard-to-stick plastic board, etc.
Ultra high viscosity protective film
Characteristics: Thickness (≥0.04±0.003), Width (≤1.3), Height (100-800), Substrate (PE), Peel Strength (above 100g/cm), Temperature Resistance (60), Stretching ratio (>400);
Uses: Very high viscosity, water-based acrylic acid is used as pressure-sensitive adhesive, which is easy to use, easy to stick and tear, and has no residual glue phenomenon. It is suitable for hard-to-stick materials such as rough-grained aluminum plates.
The pe protective film dissolution method shared today is here. The melting point of high-density polyethylene is 132-135oC, and the melting point of low-density polyethylene is lower (112oC) and has a wide range. It is insoluble in any known solvent at room temperature, and can be dissolved in a small amount in toluene, amyl acetate, trichloroethylene and other solvents above 70oC. As for aqua regia, acid is not acceptable.
