Self-curling film, method for making the same, and method for activating the same
AssigneeHon Hai Precision Industry Co., Ltd.
InventorHSIU-WEN CHIEN
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Abstract
A self-curling film includes a nanofiber base film and a nanofiber external film connected to the nanofiber base film. The nanofiber base film comprises a plurality of polymer nanofibers aligned according to a first single-direction aligning pattern. The nanofiber external film comprises a plurality of polymer nanofibers aligned according to a second aligning pattern that is the same as or different from the first aligning pattern. The polymer nanofibers of the nanofiber deformable film includes a temperature or UV-sensitive material that causes the nanofiber deformable film to shrink or expand when heated or exposed to ultraviolet radiation.
Claims19
A method for making a self-curling film comprising:
- providing an electrospinning device comprising a collector;
- forming a nanofiber base film on the collector through an electrospinning process, the nanofiber base film comprising a plurality of polymer nanofibers aligned according to a first aligning pattern, wherein the first aligning pattern is that the polymer fibers of the nanofiber base film are orderly aligned along a same direction;
- forming a nanofiber deformable film on a surface of the nanofiber base film facing away from the collector through an electrospinning process, thereby forming a nanofiber composite film, the nanofiber deformable film comprising a plurality of polymer nanofibers aligned according to a second aligning pattern that is the same as or different from the first aligning pattern, the polymer nanofibers of the nanofiber deformable film comprising an environmental sensitive material that is sensitive to temperature changes or ultraviolet radiation, thereby causing the nanofiber deformable film to shrink or expand when heated or exposed to ultraviolet radiation;
- and
- separating the nanofiber composite film from the collector and cutting the nanofiber composite film to a desired size, thereby forming the self-curling film.
A method for activating a self-curling film comprising:
- providing an electrospinning device comprising a collector;
- forming a nanofiber base film on the collector through an electrospinning process, the nanofiber base film comprising a plurality of polymer nanofibers aligned according to a first aligning pattern, wherein the first aligning pattern is that the polymer fibers of the nanofiber base film are orderly aligned along a same direction;
- forming a nanofiber deformable film on a surface of the nanofiber base film facing away from the collector through an electrospinning process, thereby forming a nanofiber composite film, the nanofiber deformable film comprising a plurality of polymer nanofibers aligned according to a second aligning pattern that is the same as or different from the first aligning pattern, the polymer nanofibers of the nanofiber deformable film comprising an environmental sensitive material that is sensitive to temperature changes or ultraviolet radiation, thereby causing the nanofiber deformable film to shrink or expand when heated or exposed to ultraviolet radiation;
- separating the nanofiber composite film from the collector and cutting the nanofiber composite film to a desired size, thereby forming the self-curling film;
- and
- heating or exposing the self-curling film to ultraviolet radiation, thereby causing the nanofiber deformable film to shrink or expand, so that the self-curling film curls to form a sleeve.
A self-curling film comprising:
- a nanofiber base film comprising a plurality of polymer nanofibers aligned according to a first aligning pattern, wherein the first aligning pattern is that the polymer fibers of the nanofiber base film are orderly aligned along a same direction;
- and
- a nanofiber deformable film connected to the nanofiber base film, the nanofiber deformable film comprising a plurality of polymer nanofibers aligned according to a second aligning pattern that is the same as or different from the first aligning pattern, the polymer nanofibers of the nanofiber deformable film comprising an environmental sensitive material that is sensitive to temperature changes or ultraviolet radiation, thereby causing the nanofiber deformable film to shrink or expand when heated or exposed to ultraviolet radiation.
Dependencies are inferred from the claim text.