STRAND MANUFACTURING APPARATUS, PELLET MANUFACTURING APPARATUS, STRAND MANUFACTURING METHOD, AND PELLET MANUFACTURING METHOD

• Main Author: TAKEUCHI TAKASUE
• Format: Patent
• Language: English; Japanese
• Published: 18.01.2016
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; MAKING GRANULES OR PREFORMS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a manufacturing apparatus and a manufacturing method of a strand, which can reduce variation of each strand outer diameter from a plurality of through holes of a die.SOLUTION: A strand manufacturing apparatus comprises a die and a channel member. The die comprises a plurality of through holes that are aligned. The channel member defines a channel 18 for supplying a molten resin raw material to the plurality of through holes. The channel 18 includes: an outflow port 24 extending over the plurality of through holes in a first direction of which the plurality of through holes are aligned; an inflow port 23 having a smaller dimension in an X direction than the outflow port 24; a manifold part 25 extending from the inflow port 23 in the X direction; and a slit part 26 linked to the manifold part 25 in a Y direction crossing the X direction, and extending from the manifold part 25 to the outflow port 24. The dimension of the slit part 26 in the Y direction becomes shorter it separates from the inflow port 23 in the X direction. The cross section of the manifold part 24 crossing the X direction becomes smaller as it separates from the inflow port 23 in the X direction. 【課題】ダイの複数貫通孔からの各ストランド外径のばらつきを軽減するストランド製造装置、製造方法を提供する。【解決手段】ストランド製造装置は、ダイと流路部材を備える。ダイは複数の貫通孔を有し、該複数の貫通孔は並べられている。流路部材は、複数の貫通孔に溶融状態の樹脂原料を供給する流路１８を画定する。流路１８は、複数の貫通孔が並べられた第１の方向に延び複数の貫通孔に亘る流出口２４と、Ｘ方向の寸法が流出口２４よりも小さい流入口２３と、流入口２３からＸ方向に延びるマニホールド部２５と、Ｘ方向と交わるＹ方向にマニホールド部２５に連接しマニホールド部２５から流出口２４まで延びるスリット部２６と、を含む。スリット部２６の、Ｙ方向の寸法は、流入口２３からＸ方向に離れるにつれて短くなっている。マニホールド部２５の、Ｘ方向と交わる断面は、流入口２３からＸ方向に離れるにつれて小さくなっている。【選択図】図３