Injection molding metal mold and shaped article
AssigneePrime Polymer Co., Ltd.
InventorsTomoyuki Obara, Yukio Ishii, Tatsuji Kawamura
Life of this patent
Estimating the term…
Abstract
An injection-molding die including: a fixed die; a movable die; a cavity defined by the fixed die and the movable die; and a gate for injecting a melt resin into the cavity. The cavity includes: a flow-dividing structure that divides a flow of the melt resin injected into the cavity into a plurality of resin flows; and a flow-advancing area in which the resin flows generated by the flow-dividing structure are merged together. The flow-advancing area is formed thicker than a flow-hesitating area of the flow-advancing area in the cavity.
Claims7
An injection-molding die, comprising:
- a fixed die;
- a movable die;
- a cavity defined by the fixed die and the movable die;
- and
- a gate for injecting a melt resin into the cavity,
- wherein the cavity includes
- a flow-dividing structure that divides a flow of the melt resin injected into the cavity into a plurality of resin flows, and
- a flow-advancing area in which the plurality of resin flows generated by the flow-dividing structure are merged together,
- wherein a thickness (a) of the flow-advancing area is thicker than a thickness (b) of a flow-hesitating area of the flow-advancing area in the cavity, and
- wherein the thickness (a) of the flow-hesitating area and the thickness (b) of the flow-advancing area satisfy a relationship of 0.4≦a/b≦0.9.
An injection-molding die, comprising:
- a fixed die;
- a movable die;
- a cavity defined by the fixed die and the movable die;
- and
- a plurality of gates for injecting a melt resin into the cavity,
- wherein the cavity includes a flow-advancing area in which resin flows of the melt resin injected from the plurality of gates are merged together,
- wherein a thickness (a) of the flow-advancing area is thicker than a thickness (b) of a flow-hesitating area of the flow-advancing area in the cavity, and
- wherein the thickness (a) of the flow-hesitating area and the thickness (b) of the flow-advancing area satisfy a relationship of 0.4≦a/b≦0.9.
Dependencies are inferred from the claim text.