An exemplary system for controlling electrodeposition coating for electrochemically forming a coating film on a coating object in an electrodeposition tank storing electrodeposition solution includes, a positive electrode configured to apply a positive electrode voltage to a positive electrode disposed in the electrodeposition tank, a negative electrode configured to apply a negative electrode voltage to the coating object transferred by a hanger, and an electrodeposition controller configured to electrochemically deposit the coating film on an external surface and an internal surface of the coating object by applying the positive electrode voltage to the positive electrode and the negative electrode voltage to the negative electrode, where the electrodeposition controller may be configured to control voltage, current, and pulse in multi-stages over time from a dip-in time point to a draw-out time point of the coating object into and from the electrodeposition tank.

The present invention relates to a material having various functions such as antimicrobial function or waterproof function, as well as a method and an apparatus for manufacturing the same. The method for manufacturing a functional material according to the present invention includes coating a surface of conductive or non-conductive material with an electrically charged microfine material having a size of nano- or micro-units, thereby imparting functionality to the material simultaneously with maintaining intrinsic properties thereof.

In addition, the method for manufacturing a functional material, according to the present invention, had advantages in which: repeating a process of coating the surface of the conductive or non-conductive material with a functional substance can impart a plurality of desired functions to the material, in addition, a thickness of the functional material may be easily adjusted, and a large area/large quantity may be produced by a simplified process using a general material in a short period.

The present disclosure is drawn to a multi-color electronic housing. The multi-color electronic housing can include a metal alloy having a first portion that can be milled, plasma-treated, and can include an electrodeposited colorant thereon. The metal alloy can further have a second portion that can be milled, plasma-treated, and can include second electrodeposited colorant thereon. The first electrodeposited colorant can provide a different coloration than the second electrodeposited colorant.

The present disclosure is drawn to a multi-color electronic housing. The multi-color electronic housing can include a metal alloy having a first portion that can be milled, plasma-treated, and can include an electrodeposited colorant thereon. The metal alloy can further have a second portion that can be milled, plasma-treated, and can include second electrodeposited colorant thereon. The first electrodeposited colorant can provide a different coloration than the second electrodeposited colorant.

The present disclosure is drawn to covers for electronic devices. In one example, a cover for an electronic device can include an enclosure with a light metal substrate with an opening therethrough, and a first protective coating covering the light metal substrate. A second protective coating is on the first protective coating, and a chamfered edge is present along the opening where the chamfer cuts through the first protective coating and the second protective coating to expose the light metal substrate at the chamfered edge. In one example, a transparent passivation layer is included along the chamfered edge.

A floating metallized element assembly and method of manufacturing thereof are disclosed. The floating metallized element assembly includes a work piece of a plateable resin and a non-plateable resin including a front side and a back side. The work piece includes at least one plated decorative region on the plateable resin at the front side. The work piece also includes at least one network of the plateable resin at the back side. The work piece additionally includes a plurality of discrete current paths of the plateable resin extending from the at least one network to the at least one plated decorative region. The work piece also includes at least one non-plated decorative region of the non-plateable resin adjacent the at least one decorative region. Metal surfaces are adhered to and disposed on the at least one plated decorative region.

A floating metallized element assembly and method of manufacturing thereof are disclosed. The floating metallized element assembly includes a work piece of a plateable resin and a non-plateable resin including a front side and a back side. The work piece includes at least one plated decorative region on the plateable resin at the front side. The work piece also includes at least one network of the plateable resin at the back side. The work piece additionally includes a plurality of discrete current paths of the plateable resin extending from the at least one network to the at least one plated decorative region. The work piece also includes at least one non-plated decorative region of the non-plateable resin adjacent the at least one decorative region. Metal surfaces are adhered to and disposed on the at least one plated decorative region.

A heat recovery device including: a warm-water bath storing warm water and a drying chamber, wherein warm exhausted air from the chamber heats the water includes: an exhaust duct that the exhausted air from the chamber to the outside air passes; an exhaust bypass duct between two positions in the exhaust duct; a circulation pipe through which the water circulates; a heat exchanger provided generates air in the bypass duct to be absorbed by water in the circulation pipe; a warm-water bypass pipe between two positions downstream to the heat exchanger in the circulation pipe or between one position downstream to the heat exchanger in the circulation pipe and the warm-water bath; a heatsink provided at the bypass pipe; a first distribution-changing valve for distribution of air flowing from the exhaust duct to the exhaust bypass duct; and a second distribution valve for distributing water to the bypass pipe.

A heat recovery device including: a warm-water bath storing warm water and a drying chamber, wherein warm exhausted air from the chamber heats the water includes: an exhaust duct that the exhausted air from the chamber to the outside air passes; an exhaust bypass duct between two positions in the exhaust duct; a circulation pipe through which the water circulates; a heat exchanger provided generates air in the bypass duct to be absorbed by water in the circulation pipe; a warm-water bypass pipe between two positions downstream to the heat exchanger in the circulation pipe or between one position downstream to the heat exchanger in the circulation pipe and the warm-water bath; a heatsink provided at the bypass pipe; a first distribution-changing valve for distribution of air flowing from the exhaust duct to the exhaust bypass duct; and a second distribution valve for distributing water to the bypass pipe.

The amount of wash water to be consumed in an electrodeposition coating facility and the amount of used wash water to be discharged that requires post-treatment are reduced. To achieve this object, an electrodeposition coating facility that includes a degreasing process section A, a post-degreasing rinse section B, a chemical conversion process section C, a post-chemical-conversion rinse section D, an electrodeposition coating section E, and a post-electrodeposition rinse section F is provided with a filtration process apparatus 4 and a wash water recycling line 5. The filtration process apparatus 4 performs a filtration process on wash water W after being used to wash an object to be coated 1 in the post-electrodeposition rinse section F. The wash water recycling line 5 feeds, to the post-chemical-conversion rinse section D, the wash water W after being subjected to the filtration process in the filtration process apparatus 4 as wash water W to be used to wash an object to be coated in the post-chemical-conversion rinse section D.