Die plate cover, die head, extruder, and method of manufacturing resin pellets
AssigneeThe Japan Steel Works, Ltd.
InventorsHiroyuki KAWANO, Tomonori HASHIMOTO, Naoki UEDA, Yoshihiro KURATA
Life of this patent
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Abstract
A die plate cover 80 contains a vacuum layer as a heat insulating layer and is attached to a die plate 70 from which a molten resin is extruded. The die plate cover 80 attached to the die plate 70 covers a plurality of through holes 75a formed in a front surface 70f of the die plate 70 and bolts 76 inserted through the respective through holes 75a.
Claims14
A die plate cover attached to one surface of a die plate from which a molten resin is extruded,
- the die plate cover having a shape that covers a plurality of through holes famed in the one surface of the die plate and bolts inserted through the respective through holes, and
- the die plate cover containing a heat insulating layer.
A die head to which a molten resin is supplied, the die head comprising:
- a die plate provided with a nozzle through which the supplied molten resin passes;
- a die holder arranged on one side of the die plate;
- and
- a die plate cover arranged on the other side of the die plate,
- wherein a plurality of through holes through which bolts to fix the die plate to the die holder are inserted are formed in the die plate, and
- wherein the die plate cover has a shape that covers the plurality of through holes formed in the die plate and the bolts inserted through the respective through holes, and the die plate cover contains a heat insulating layer.
An extruder configured to cut a molten resin while extruding it from a die head, the extruder comprising:
- a screw configured to convey the molten resin while kneading it and supply it to the die head;
- and
- a cutting mechanism configured to cut the molten resin extruded from the die head,
- wherein the die head includes:
- a die plate provided with a nozzle through which the molten resin supplied by the screw passes;
- a die holder arranged on one side of the die plate;
- and
- a die plate cover arranged on the other side of the die plate,
- wherein a plurality of through holes through which bolts to fix the die plate to the die holder are inserted are formed in the die plate, and
- wherein the die plate cover has a shape that covers the plurality of through holes formed in the die plate and the bolts inserted through the respective through holes, and the die plate cover contains a heat insulating layer.
A method of manufacturing resin pellets comprising:
- (a) extruding a molten resin from a die head;
- and
- (b) cutting the molten resin extruded from the die head,
- wherein the die head from which the molten resin is extruded in the (a) includes:
- a die plate provided with a nozzle through which the supplied molten resin passes;
- a die holder arranged on one side of the die plate;
- and
- a die plate cover arranged on the other side of the die plate,
- wherein a plurality of through holes through which bolts to fix the die plate to the die holder are inserted are formed in the die plate, and
- wherein the die plate cover has a shape that covers the plurality of through holes formed in the die plate and the bolts inserted through the respective through holes, and the die plate cover contains a heat insulating layer.
Dependencies are inferred from the claim text.