Machine working method for cutting or punching high elastic modulus polyethlene or its compound material

The invention aims at facilitating machining such as cutting, boring or the like, of high-modulus polyethylene by utilising its thermal properties. In accordance with the method of the present invention, high-modulus polyethylene is heated to a temp. higher than the m.pt. of its crystalline fibrils...

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Bibliographische Detailangaben
Hauptverfasser:	MASARU URYU, KAZUO YAGI, YOSHIO NISHI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS COMBINED OPERATIONS CUTTING DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING,CUTTING-OUT, STAMPING-OUT OR SEVERING FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR HAND CUTTING TOOLS LAUNDERING MACHINE TOOLS MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS METAL-WORKING NOT OTHERWISE PROVIDED FOR NATURAL OR ARTIFICIAL THREADS OR FIBRES OTHER WORKING OF METAL PERFORMING OPERATIONS SEVERING SPINNING TEXTILES TRANSPORTING TREATMENT OF TEXTILES OR THE LIKE UNIVERSAL MACHINE TOOLS
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Beschreibung
Zusammenfassung:	The invention aims at facilitating machining such as cutting, boring or the like, of high-modulus polyethylene by utilising its thermal properties. In accordance with the method of the present invention, high-modulus polyethylene is heated to a temp. higher than the m.pt. of its crystalline fibrils before machining so that the heated portion of the polyethylene returns to the state before super-drawing and is easy to machine. Accordingly, a fabrication such as cutting, boring or the like can be carried out easily.