Patent ID: 9701076
Date: 2017-07-11
CPC Classifications: B29B,B29C,B29D,B29K,B29L,B32B,B65D,Y10T

Claim:
1. A mold for a multi-layer container, the mold comprising: a cold-half portion (I) comprising a cavity; and a hot-half portion (II) comprising a first resin flow path for connecting an interior of a first injection cylinder to the cavity, a second resin flow path for connecting an interior of a second injection cylinder to the cavity, and a junction portion of the first resin flow path and the second resin flow path, wherein: the junction portion in the hot-half portion (II) is positioned upstream of a gate portion opened to the cavity included in the cold-half portion (I); the second resin flow path comprises an inhibitor for partially inhibiting a resin flow and a pin situated entirely upstream of the inhibitor, such that the partially inhibiting of the resin flow by the inhibitor does not block the center of the second resin flow path; the inhibitor comprises a convex portion in at least one part in the second resin flow path; and the convex portion comprises a longest portion in a diameter direction and a longest portion in a circumferential tangential direction of a cross-section in a direction vertical to a flow direction of the second resin flow path, such that the longest portion in the diameter direction has a length of ‘a’ (mm), and the longest portion in the circumferential tangential direction has a length of ‘b’ (mm), in which a and b satisfy the following relationships and where ‘r’ represents a radius (mm) of the second resin flow path.