Abstract: A time necessary for phase alignment is shortened in a polygon machining device having a plurality of cutting tools. In phase alignment of polygon machining, a phase RCURRENT of the workpiece axis and tool axis before phase alignment and a machining-allowing phase command value RNEW(n) are calculated, a new phase command value R?NEW is calculated while considering restrictions such as a phase alignment method and a maximum rotation speed. By adjusting a phase to the new phase command value R?NEW, a time necessary for phase alignment can be shortened.

Abstract: A surface protection film has moderate adhesive properties for bonding to adherend bodies with a rough surface, a rear surface with good slipping properties, and blocking resistance and good unwinding properties. The surface protection film has a laminated structure formed at least of an adhesive layer and a back layer, wherein the adhesive layer is formed mainly of a styrene-based elastomer while the back layer is formed mainly of a propylene-based resin containing 0.5 wt % to 10 wt % of a fluorine-containing compound having a polyfluorohydrocarbon group and a polyoxy ethylene group.

Abstract: A surface protection film has moderate adhesive properties for adherend bodies with a rough surface, has a rear surface with good slipping properties, and blocking resistance and good unwinding properties (decreased unwinding tension to enable easy, high-speed sticking of the film to an adherend without causing creases or flaws). The surface protection film has a three-layered composite structure including an adhesive layer, an interlayer, and a back layer, wherein the adhesive layer is formed of 35 to 90 wt % of a linear low density polyethylene, 5 to 50 wt % of a styrene-based elastomer, and 15 wt % or less of a tackifier, the interlayer formed mainly of a propylene-based resin, and the back layer formed mainly of the same propylene-based resin as that constituting the interlayer and/or a different propylene-based resin therefrom, and also wherein the back layer has a surface roughness of 3 ?m or more in terms of ten-point average roughness (Rz).

Abstract: [Object of the Invention] An object of the present invention is to provide a method for processing contact portions between a valve plate and a suction valve and/or discharge valve of a reciprocating compressor to prevent the suction valve and/or the discharge valve from sticking on the valve plate at the portions contacting the valve plate, the productivity thereof being higher than that of the conventional method.

Abstract: [Object of the Invention] An object of the present invention is to provide a method for processing the valve plate of a reciprocating compressor to prevent the suction valves and/or the discharge valves of the compressor from sticking on the valve plate at the portions abutting the valve plate, the productivity thereof being higher than that of the conventional method.

Abstract: A film for print lamination is described which comprises a biaxially drawn polypropylene film having a heat-adhesive layer provided on one side thereof, the surface of said heat-adhesive layer having a wet tension not smaller than 34 dyne/cm, said heat-adhesive layer being comprised of a composition comprising:(a) 100 parts by weight of a first component consisting of an ethylene methyl methacrylate copolymer having a melt flow rate of from 5 to 500; and(b) from 5 to 50 parts by weight of a second component selected from the group consisting of polyethylene and an ethylene-methyl methacrylate copolymer and having a melt flow rate of from 0.05 to 3.0.This film for print lamination is used to laminate over a printed surface of a printed matter by application of heat and pressure to obtain a laminated product having a good gloss.