Device and method for cutting and winding a tubular resin film
AssigneeSumitomo Bakelite Co., Ltd.
InventorsToyotaro Maruyama, Masanori Ikenaga, Takeshi Takeuchi
Life of this patent
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Abstract
A device and method are provided for continuously manufacturing a thermoplastic resin film product of any width having a small film thickness and uniform flat surface at an excellent yield. A tubular resin film cutting and winding device for cutting a tubular resin film 1a into a helical shape and winding a long film 1b, comprising a cutting device having a cutting member 2 for cutting a tubular resin film 1a; a winding device 4 for winding the cut long film 1b; and a guide rollers 3 for guiding the cut long film to the winding device, wherein the cutting member 2 and the guide rollers 3 have a mechanism for rotation in the circumferential direction of the tubular resin film.
Claims15
A tubular resin film cutting and winding device for cutting a tubular resin film into a helical shape and winding it as a cut long film, comprising:
- a cutting device having a cutting member for cutting the tubular resin film;
- a winding device for winding the cut long film;
- a core member disposed to be inside the tubular resin film, the core member being composed of a porous material for holding a shape of a portion of the tubular resin film opposed to the cutting device, while exuding a fluid through a surface thereof;
- and
- a guide roller composed of a porous material for guiding the cut long film after cutting the tubular resin film to the winding device, while exuding a fluid through a surface thereof,
- wherein the cutting member and the guide roller rotate in the circumferential direction of the tubular resin film, and the cut long film is guided by the guide roller to be wound by the winding device while remaining wound around the core member.
A cutting and winding method for cutting a tubular resin film into a helical shape and winding it as a cut long film, including:
- a step in which a cutting device having a cutting member for cutting the tubular resin film rotates in the circumferential direction of the tubular resin film to thereby cut a helical long film;
- a step in which a core member is disposed inside the tubular resin film, the core member being composed of a porous material and holding a shape of a portion of the tubular resin film opposed to the cutting device while exuding a fluid through a surface thereof;
- a step in which a guide roller composed of a porous material rotates in the circumferential direction of the tubular resin film while exuding a fluid to thereby guide the cut long film to a winding device while the cut long film remains wound around the core member;
- and
- a step for winding the long film using the winding device.
Dependencies are inferred from the claim text.