Abstract: The present invention is a golf ball marker having a first marker in which a through hole is formed, and a second marker which has a pin portion arranged so as to be inserted into the through hole, wherein the first marker and the second marker are structured detachably by a detachable portion which is provided in at least one of the first and second markers, and a height of the first marker is greater than a height of the second marker except the pin portion.

Abstract: A method for producing a thermoplastic resin sheet or a filler-containing thermoplastic resin sheet by which method a difficultly-workable thermoplastic resin as well as an ordinary thermoplastic resin can be formed into a sheet and various kinds of fillers can be compounded into the sheet. The method is characterized in that a thermoplastic resin or a composition of a thermoplastic resin and a filler is fed in powder or preformed sheet form between a pair of tensioned endless belts disposed parallel and travelling together around a set of rolls, the endless belts being heated by being brought into surface-to-surface contact with heating rolls while travelling along a path having at least one bend formed by the heating rolls, and the material is heated and compressed between the endless belts and melted into an integral body at or above the melting point or softening point of the thermoplastic resin.

Abstract: A novel method for producing laminated sheets or films consisting of a substrate layer or layers and a layer or layers of ultra-high molecular weight polyethylene. The method is characterized by the steps of: superposing at least one layer of ultra-high molecular weight polyethylene in powder or preformed sheet form and at least one layer of a substrate of another material upon one face of a tensioned endless belt travelling around a set of rolls, with an adhesive interposed between said layers if necessary; pressing or squeezing said ultra-high molecular weight polyethylene layer between said substrate layer and said endless belt, or between said substrate layers, against one or more heating rolls under the tension of said endless belt; heating at least said ultra-high molecular weight polyethylene layer to a temperature above its melting point; and thereby uniting said superposed ultra-high molecular weight polyethylene and substrate layers into a laminated sheet or film.