| 摘要 |
PROBLEM TO BE SOLVED: To provide a biaxial stretch blow-molded delamination bottle, which can restrict a modified form of a content into a fixed form so that the delamination bottle can be realized in a high productivity.SOLUTION: A test-tube shaped synthetic resin laminated perform, which has a stationary portion for assembling and fixing an outer body and an inner body prepared by an insert molding, is subjected to a biaxial stretch blow-molding. An outer layer for forming an outer shell molded of an outer body of a preform and an inner layer for forming a content molded from an inner body are laminated, such that the outer layer and the inner layer are laminated in a peelable manner. The content is formed so thin that the volume-reducing deformation of a shrinking shape by the pressure reduction of the inside can be made. The outer shell body and the content are fixed at predetermined portions by the under-cut shaped fitting stationary portion molded from the stationary portion of the preform. At a predetermined position of the outer shell body, there is formed an air intake hole for introducing the ambient air into the clearance between the outer layer and the inner layer. The fitting stationary portion regulates the form of the volume-reducing deformation of the contents into a fixed form. |
