Abstract: There is provided a protecting method capable of simply and firmly protecting a required face of an article such that the required face of the article is not damaged or contaminated and capable of extremely simply carrying out a protecting step and a protection releasing step.

Abstract: There is provided a protecting method capable of simply and firmly protecting a required face of an article such that the required face of the article is not damaged or contaminated and capable of extremely simply carrying out a protecting step and a protection releasing step.

Abstract: The invention relates to an improved method for chucking and machining a workpiece using a freezing type chuck device. A macromolecular freezing agent whose freezing point is higher than that of water is interposed at least between a workpiece and a fixing surface, and the workpiece is fixed using this macromolecular freezing agent as an adhesive medium by cooling the fixing surface. The macromolecular freezing agent may be a liquid, a cream or a paste, and is typically silicone oil based. The workpiece may be directly fixed to the fixing surface of a freezing type chuck device by the macromolecular freezing agent or alternatively the workpiece may be fixed to a pallet by the macromolecular freezing agent and the pallet may be fixed to the fixing surface.

Abstract: A workpiece fixing method capable of machining a workpiece with high accuracy by firmly fixing the workpiece with no necessity of using a special freezing chuck device is provided. For this purpose, a macromolecular freezing agent having the freezing point hither than that of water and represented by silicone oil is interposed at least between the workpiece and the surface of a fixing jig under which a fluid at a temperature lower than the freezing temperature of the macromolecular freezing agent is operated on the fixing jig during a time period of machining the workpiece whereby the macromolecular freezing agent is cooled and frozen and the workpiece is adhered and fixed.