Insulation film and method for making insulation film

A method of producing an insulation film, the method comprising:

• on a first extruder, extruding PC or PET particles containing the flame retardant to melt them, the PC or PET containing the flame retardant in a molten state flowing out of the first extruder and then through subsequent connected pipes into a dispenser, the dispenser dividing the PC or PET containing the flame retardant in the molten state extruded out of the first extruder into two flows, namely, a first molten PC or PET containing the flame retardant and a second molten PC or PET containing the flame retardant;
• extruding on a second extruder the particles of the blends of PP and/or PE and PC and/or PET to make them molten, the the blends of PP and/or PE and PC and/or PET in the molten state flowing out of the second extruder and then through subsequent connected pipes into the dispenser, the blends of PP and/or PE and PC and/or PET in the molten state flowing into between the first molten PC or PET containing the flame retardant and the second molten PC or PET containing the flame retardant in the dispenser;
• the first molten PC or PET containing flame retardant, the blends of PP and/or PE and PC and/or PET in the molten state and the second molten PC or PET containing flame retardant being superimposed together and then flowing out of the dispenser, flowing through a die head into a cooling forming roller to be cooled and formed as a sheet/film.

A method of producing an insulation film, the method comprising:

• on a first extruder, extruding PC or PET particles containing the flame retardant to melt them to form a first molten PC or PET containing the flame retardant, the first molten PC or PET containing the flame retardant flowing out of the first extruder and then through subsequent connected pipes into a dispenser;
• extruding on a third extruder PC or PET particles containing the flame retardant to make them molten to form a second molten PC or PET containing the flame retardant, the second molten PC or PET containing the flame retardant being extruded out of the third extruder and then flowing through subsequent connected pipes into the dispenser;
• extruding on a second extruder the particles of the blends of PP and/or PE and PC and/or PET to make them molten, the blends of PP and/or PE and PC and/or PET in the molten state flowing out of the second extruder and then through subsequent connected pipes into the dispenser, the blends of PP and/or PE and PC and/or PET in the molten state flowing into between the first molten PC or PET containing the flame retardant and the second molten PC or PET containing the flame retardant in the dispenser;
• the first molten PC or PET containing flame retardant, the blends of PP and/or PE and PC and/or PET in the molten state and the second molten PC or PET containing flame retardant being superimposed together and then flowing out of the dispenser, flowing through a die head into a cooling forming roller to be cooled and formed as a sheet/film.

A method of producing an insulation film, the method comprising:

• providing a film upper layer and a film lower layer, wherein both of the film upper layer and film lower layer are made of a PC or PET material and the PC or PET material contains a flame retardant to meet the flame retardance thereof;
• providing an intermediate layer located between the film upper layer and the film lower layer, the film intermediate layer is made of the blends of PP and/or PE and PC and/or PET;
• applying a glue to a lower surface of the film upper layer and/or an upper surface of the film intermediate layer, and applying a glue on an upper surface of the film lower layer and/or a lower surface of the film intermediate layer;
• delivering the film upper layer, film intermediate layer and film lower layer through pressing rollers to be pressed and formed as a sheet/film.

A method of producing an insulation film, the method comprising:

• providing a film upper layer and a film lower layer, wherein both of the film upper layer and film lower layer are made of a PC or PET material and the PC or PET material contains as a flame retardant to meet the flame retardance;
• providing an intermediate layer located between the film upper layer and the film lower layer, the film intermediate layer is made of the blends of PP and/or PE and PC and/or PET;
• respectively heating the film upper layer, the film intermediate layer and the film lower layer to soften them;
• delivering the heated and softened film upper layer, film intermediate layer and film lower layer through pressing rollers to be pressed and formed as a sheet/film.

An insulation film, comprising:

• a film upper layer made of a PC or PET material, wherein the PC or PET material contains a flame retardant to meet the flame retardance thereof;
• and
• a film lower layer, wherein the film lower layer is made of the blends of PP and/or PE and PC and/or PET;
• a lower surface of the film upper layer is bound together with an upper surface of the film lower layer.