A novel biodegradable material for use in packaging applications, including food packaging applications, is provided. The disclosed biodegradable material is simple and cost efficient to manufacture, provides a superior water vapor barrier and/or oxygen barrier that is superior to prior art biodegradable and/or compostable materials used in packaging applications, and can withstand exposure to a wide variety of physical and chemical environments.

A method of manufacturing a toy using a model frame in liquid includes: filling a water tank; dissolving calcium chloride, a powder component, into the water filled in the water tank; wherein the amount of calcium chloride is determined in anticipation of the degree of gelation by chemical action with sodium alginate, filling a liquid paint to the model frame; wherein the liquid paint is comprised water 96 wt. %, CNC 0.99 wt. %, sodium alginate 3 wt. %, luminous material 0.01 wt. % or water 91 wt. %, CNC 1 wt. %, sodium alginate 3 wt. %, shiny material 5 wt. % or water 96 wt. %, CNC 0.99 wt. %, sodium alginate 3 wt. %, color conversion material 0.01 wt. %; immersing the model frame filled with the liquid paint in the water tank; solidifying and shrinking the liquid paint filled in the model frame immersed in the water tank; and shaking the model frame.

A method of manufacturing a toy using a model frame in liquid includes: filling a water tank; dissolving calcium chloride, a powder component, into the water filled in the water tank; wherein the amount of calcium chloride is determined in anticipation of the degree of gelation by chemical action with sodium alginate, filling a liquid paint to the model frame; wherein the liquid paint is comprised water 96 wt. %, CNC 0.99 wt. %, sodium alginate 3 wt. %, luminous material 0.01 wt. % or water 91 wt. %, CNC 1 wt. %, sodium alginate 3 wt. %, shiny material 5 wt. % or water 96 wt. %, CNC 0.99 wt. %, sodium alginate 3 wt. %, color conversion material 0.01 wt. %; immersing the model frame filled with the liquid paint in the water tank; solidifying and shrinking the liquid paint filled in the model frame immersed in the water tank; and shaking the model frame.

A method for preparing an aqueous coating composition to be applied by co-extrusion around a food preparation and contacted with a gelling agent, such as calcium chloride, to form a shell around the food preparation. After mixing at least the water and the alginate of the composition, the mixture is exposed to a high pressure of at least 1400 bar, for example at least 1800 bar, for at least 0.1 second.

A method for preparing an aqueous coating composition to be applied by co-extrusion around a food preparation and contacted with a gelling agent, such as calcium chloride, to form a shell around the food preparation. After mixing at least the water and the alginate of the composition, the mixture is exposed to a high pressure of at least 1400 bar, for example at least 1800 bar, for at least 0.1 second.

A hydrophilic coating material including an alginic acid compound and a resin, in which the alginic acid compound is granulated and dispersed in the resin. In a coating film using the material, it is preferred that the granulated alginic acid compound is exposed on the surface. Such a hydrophilic coating film is suitable as a hydrophilization treatment film of a nozzle face surface of an inkjet recording head.

A hydrophilic coating material including an alginic acid compound and a resin, in which the alginic acid compound is granulated and dispersed in the resin. In a coating film using the material, it is preferred that the granulated alginic acid compound is exposed on the surface. Such a hydrophilic coating film is suitable as a hydrophilization treatment film of a nozzle face surface of an inkjet recording head.

A method of encapsulating content with calcium alginate membrane to form a capsule. The method includes embedding sodium alginate into a traditional gelatin ribbon used in gelatin encapsulation, adding calcium to a fill material, encapsulating the fill material, and then denaturing the gelatin in the shell. An exemplary use of this method is to form throwable paintballs; however, other products could be formed using this process. A paintball formed by this process is also disclosed.

A method of encapsulating content with calcium alginate membrane to form a capsule. The method includes embedding sodium alginate into a traditional gelatin ribbon used in gelatin encapsulation, adding calcium to a fill material, encapsulating the fill material, and then denaturing the gelatin in the shell. An exemplary use of this method is to form throwable paintballs; however, other products could be formed using this process. A paintball formed by this process is also disclosed.

A method of encapsulating content with calcium alginate membrane to form a capsule. The method includes embedding sodium alginate into a traditional gelatin ribbon used in gelatin encapsulation, adding calcium to a fill material, encapsulating the fill material, and then denaturing the gelatin in the shell. An exemplary use of this method is to form throwable paintballs; however, other products could be formed using this process. A paintball formed by this process is also disclosed.