Abstract:
Disclosed are: an encapsulation film which is produced using, as a base material, a polyester film which is inexpensive and has excellent mechanical properties and processability, can prevent the deterioration of a gas-barrier property under long-term use (which is a problem in the prior art) and has excellent long-term reliability; and a photovoltaic module using the encapsulation film. Specifically, disclosed are: an encapsulation film which has hydrolysis resistance, transparency, and weather resistance and is reduced in weight; and a photovoltaic module using the encapsulation film. The encapsulation film comprises: a polyester film layer having heat contraction coefficients of ± 2% or less at 150°C both in the length-wise and width-wise directions and a difference between a heat contraction coefficient in the length-wise direction and that in the width-wise direction of 2% or less at 150°; and a layer comprising at least one substance selected from the group consisting of a metal, a metal oxide and an inorganic compound. The photovoltaic module has the encapsulation film as a front sheet layer and/or a back sheet layer thereof.
Abstract:
An object of the present invention is to provide a seal film for solar cell module further excelling in long-term reliability and solar cell module using the same. The excellence in long-term reliability is achieved by using a PPS film excelling in heat resistance and hydrolysis resistance in at least a portion of the solar cell seal film to thereby not only reinforce the seal film against deterioration by external environment but also to prevent deterioration of the gas barrier property thereof due to long-term use having been a problem of the prior art so as to attain well-balanced environmental resistant properties (heat resistance, hydrolysis resistance, weather resistance, chemical resistance, and the like). Provided is a seal film for solar cell module including a resin film layer including a biaxially oriented film layer formed of a resin composition containing poly-p-phenylene sulfide as a major component; and a gas barrier layer formed of at least one selected from the group consisting of a metal, a metal oxide, an inorganic compound, and an organic compound. In the seal film for solar cell module, longitudinal and width direction heat shrink ratios at 150°C of the seal film for solar cell module both fall within a range of -2. 0% to +2.0%, and an absolute value of a difference between the longitudinal and width direction heat shrink ratios at 150°C is 2.0% or less.
Abstract:
Disclosed are: a sealing film which is produced using, as a base material, a polyester film which is inexpensive and has excellent mechanical properties and processability, can prevent the deterioration of a gas-barrier property under long-term use (which is a problem in the prior art) and has excellent long-term reliability; and a solar cell module using the sealing film. Specifically, disclosed are: a sealing film which has hydrolysis resistance, transparency, and weather resistance and is reduced in weight; and a solar cell module using the sealing film. The sealing film comprises: a polyester film layer having heat contraction coefficients of ± 2% or less at 150°C both in the length-wise and width-wise directions and a difference between a heat contraction coefficient in the length-wise direction and that in the width-wise direction of 2% or less at 150°; and a layer comprising at least one substance selected from the group consisting of a metal, a metal oxide and an inorganic compound. The solar cell module has the sealing film as a front sheet layer and/or a back sheet layer thereof.
Abstract:
An encapsulation film and photovoltaic module using the same are provided, being excellent in long-term reliability and wherein the degradation of gas-barrier property over long-term use (a problem in the conventional art) is curtailed. The film has as a base material an inexpensive polyester film that is excellent in mechanical characteristics and processability. Furthermore, the encapsulation film and photovoltaic module using the same are hydrolysis-resistant, transparent, weather-resistant, and lightweight. The encapsulation film comprises: a polyester film having a thermal shrinkage ratio of (± 2) % at 150 °C in both the length-wise and width-wise directions, and additionally, wherein the difference between the thermal shrinkage ratios in the length-wise and width-wise directions at 150 °C is 2 % or less; and a layer composed of at least one member selected from the group consisting of metals, metal oxides, and inorganic compounds. The photovoltaic module uses the encapsulation film as a front sheet layer and/or a back sheet layer thereof.
Abstract:
An encapsulation film and photovoltaic module using the same are provided, being excellent in long-term reliability and wherein the degradation of gas-barrier property over long-term use (a problem in the conventional art) is curtailed. The film has as a base material an inexpensive polyester film that is excellent in mechanical characteristics and processability. Furthermore, the encapsulation film and photovoltaic module using the same are hydrolysis-resistant, transparent, weather-resistant, and lightweight. The encapsulation film comprises: a polyester film having a thermal shrinkage ratio of (± 2) % at 150 °C in both the length-wise and width-wise directions, and additionally, wherein the difference between the thermal shrinkage ratios in the length-wise and width-wise directions at 150 °C is 2 % or less; and a layer composed of at least one member selected from the group consisting of metals, metal oxides, and inorganic compounds. The photovoltaic module uses the encapsulation film as a front sheet layer and/or a back sheet layer thereof.