Abstract: A polymer film including a first portion and a second portion laminated with the first portion. Each portion independently consists of one or more layers. The first and second layers each independently have a melt index ranging from 3.5 g/10 min to 10.0 g/10 min, and lower than 3.5 g/10 min, respectively. Each layer of the first portion independently has a product of its melt index and a thickness ratio of its thickness to the total thickness of the first and second portions, such that the sum of the product of each layer of the first portion ranges from 0.39 g/10 min to 2.50 g/10 min. Each layer of the second portion independently has a product of its melt index and a thickness ratio of its thickness to the total thickness of the first and second portions, such that the sum of the product of each layer of the second portion ranges from 1.10 g/10 min to 2.95 g/10 min.

Abstract: A polymer film is provided. The polymer film sequentially includes a first layer, a second layer and a third layer, where the two surfaces of the second layer are in contact with the first layer and the third layer, respectively. The first layer has a first melt index, the second layer has a second melt index, and the third layer has a third melt index. The second melt index ranges from 3.5 g/10 min to 10.0 g/10 min, the first melt index and the third melt index are independently lower than 3.5 g/10 min, and the difference between the second melt index and the first melt index, as well as the difference between the second melt index and the third melt index independently range from 0.2 g/10 min to 8.5 g/10 min.

Abstract: A polymer film and laminated glass manufactured using the same are provided. The polymer film has a first surface and a second surface, wherein the first surface has a root mean square gradient (Sdq) ranging from 0.1 to 1.5 and a root mean square height (Sq) ranging from 1 ?m to 15 ?m, wherein Sdq and Sq are defined in accordance with ISO 25178-2:2012.

Abstract: A polymer film and laminated glass manufactured using the same are provided. The polymer film has a first surface and a second surface, wherein the first surface has a root mean square gradient (Sdq) ranging from 1.5 to 3 and a root mean square height (Sq) ranging from 8 ?m to 20 ?m, wherein the Sdq and Sq are defined in accordance with ISO 25178-2:2012.

Abstract: A polymer film is provided. The polymer film sequentially includes a first layer, a second layer and a third layer, where the two surfaces of the second layer are in contact with the first layer and the third layer, respectively. The first layer has a first melt index, the second layer has a second melt index, and the third layer has a third melt index. The second melt index ranges from 3.5 g/10 min to 10.0 g/10 min, the first melt index and the third melt index are independently lower than 3.5 g/10 min, and the difference between the second melt index and the first melt index, as well as the difference between the second melt index and the third melt index independently range from 0.2 g/10 min to 8.5 g/10 min.

Abstract: A polymer film including a first portion and a second portion laminated with the first portion. Each portion independently consists of one or more layers. The first and second layers each independently have a melt index ranging from 3.5 g/10 min to 10.0 g/10 min, and lower than 3.5 g/10 min, respectively. Each layer of the first portion independently has a product of its melt index and a thickness ratio of its thickness to the total thickness of the first and second portions, such that the sum of the product of each layer of the first portion ranges from 0.39 g/10 min to 2.50 g/10 min. Each layer of the second portion independently has a product of its melt index and a thickness ratio of its thickness to the total thickness of the first and second portions, such that the sum of the product of each layer of the second portion ranges from 1.10 g/10 min to 2.95 g/10 min.

Abstract: The invention relates to a bicycle (200), in particular an electric bicycle (200). The invention also relates to a light module (100) for use in a bicycle (200), in particular an electric bicycle (200) according to the invention. The invention further relates to a bicycle control unit (8) programmed to independently control a plurality of light sources (104) of at least one light module (100) for use in a bicycle (200), in particular an electric bicycle (200) according to the invention. The invention moreover relates to an assembly of at least one light module (100) according to the invention and at least one bicycle control unit (8) according to the invention.

Abstract: Polymer film and laminated glass manufactured using the polymer film are provided. The polymer film has a first surface and a second surface, wherein the first surface has a peak material volume (Vmp) at a material ratio of 10% ranging from 0.15 ?m3/?m2 to 1.20 ?m3/?m2 and a kurtosis (Sku) ranging from 0.73 to 10.02, wherein the material ratio, peak material volume, and kurtosis are defined in accordance with ISO 25178-2:2012.

Abstract: A polymer film and laminated glass manufactured using the polymer film. The polymer film includes a first and second layer, and a third layer disposed between the first and second layers, and the two surfaces of the third layer are in contact with the first and second layers, respectively. The surface of the first layer that is not in contact with the third layer is a first surface, and the surface of the second layer not in contact with the third layer is a second surface, wherein the first surface has a void volume (Vv) value at a material ratio of 10% ranging from 3 ?m3/?m2 to 30 ?m3/?m2 and a dale void volume (Vvv) at a material ratio of 80% less than 2 ?m3/?m2, and the ratio of the maximum pit height (Sv) of the first surface to the thickness of the first layer is 0.2 or less.

Abstract: Polymer film and laminated glass manufactured using the polymer film are provided. The polymer film has a first surface and a second surface, wherein the first surface has a peak material volume (Vmp) at a material ratio of 10% ranging from 0.15 ?m3/?m2 to 1.20 ?m3/?m2 and a kurtosis (Sku) ranging from 0.73 to 10.02, wherein the material ratio, peak material volume, and kurtosis are defined in accordance with ISO 25178-2:2012.

Abstract: A polymer film and a laminated glass manufactured using the polymer film are provided. The polymer film has a first surface and a second surface, wherein the first surface has a standard deviation of a void volume (Vv) value at a material ratio of 10% ranging from 0.5 ?m3/?m2 to 2.5 ?m3/?m2, and wherein the material ratio and void volume are defined in accordance with ISO 25178-2:2012.

Abstract: A polymer film and laminated glass manufactured using the same are provided. The polymer film has a first surface and a second surface, wherein the first surface has a root mean square gradient (Sdq) ranging from 1.5 to 3 and a root mean square height (Sq) ranging from 8 ?m to 20 ?m, wherein the Sdq and Sq are defined in accordance with ISO 25178-2:2012.

Abstract: A polymer film and laminated glass manufactured using the same are provided. The polymer film has a first surface and a second surface, wherein the first surface has a root mean square gradient (Sdq) ranging from 0.1 to 1.5 and a root mean square height (Sq) ranging from 1 ?m to 15 ?m, wherein Sdq and Sq are defined in accordance with ISO 25178-2:2012.

Abstract: The present disclosure relates to a polymer film comprising a polyvinyl acetal resin and a plasticizer, wherein the polymer film comprises at least one first layer and at least one second layer, and the loss factor of the first layer and the loss factor the second layer are different; furthermore, the ratio of the loss factor of the first layer to that of the second layer is 1.30 to 3.12. The polymer film provided herein has an improved sound insulation effect.

Abstract: The present disclosure relates to a polymer film comprising a polyvinyl acetal resin and a plasticizer, wherein the polymer film is single-layer or multilayer a smallest value of a loss factor of the polymer film occurs at a temperature ranging from 40° C. to 60° C. The polymer film provided herein exhibits improved fluidity and processability.

Abstract: The present disclosure relates to a polymer film comprising at least one first layer and at least one second layer, the first layer and the second layer each comprising a polyvinyl acetal resin and a plasticizer; wherein the polymer film has a first loss factor peak value at ?20° C. to 20° C., and a second loss factor peak value at 20° C. to 50° C.; wherein the polymer film has a loss factor valley value between the first loss factor peak value and the second loss factor peak value, the loss factor valley value is 0.15 to 0.45, and the loss factor of the polymer film at 10° C. is less than 0.5. The polymer film can still maintain good sound insulation performance at a specific ambient temperature and/or after a period of time.

Abstract: A polymer film and a laminated glass manufactured using the polymer film are provided. The polymer film has a first surface and a second surface, wherein the first surface has a standard deviation of a void volume (Vv) value at a material ratio of 10% ranging from 0.5 ?m3/?m2 to 2.5 ?m3/?m2, and wherein the material ratio and void volume are defined in accordance with ISO 25178-2:2012.

Abstract: A polymer film and laminated glass manufactured using the polymer film. The polymer film includes a first and second layer, and a third layer disposed between the first and second layers, and the two surfaces of the third layer are in contact with the first and second layers, respectively. The surface of the first layer that is not in contact with the third layer is a first surface, and the surface of the second layer not in contact with the third layer is a second surface, wherein the first surface has a void volume (Vv) value at a material ratio of 10% ranging from 3 ?m3/?m2 to 30 ?m3/?m2 and a dale void volume (Vvv) at a material ratio of 80% less than 2 ?m3/?m2, and the ratio of the maximum pit height (Sv) of the first surface to the thickness of the first layer is 0.2 or less.

Abstract: A polymer film comprising polyvinyl acetal and a laminated glass manufactured using the same are provided. At least one surface of the polymer film has a void volume (Vv) value at a material ratio of 10% ranging from 3 ?m3/?m2 to 34.3 ?m3/?m2, wherein the void volume (Vv) and material ratio are defined in accordance with ISO 25178-2:2012.

Abstract: A polymer film comprising polyvinyl acetal and a laminated glass manufactured using the same are provided. At least one surface of the polymer film has a void volume (Vv) value at a material ratio of 10% ranging from 2 ?m3/?m2 to 18 ?m3/?m2, wherein the void volume (Vv) and material ratio are defined in accordance with ISO 25178-2:2012.