초록 ▼

The present invention is constituted such that chambers 13 and 14, independent from cavity 4, are formed at the rear side of a set of dies 2 and 3 for molding a molded foam product, first openings 30a and 30b opening to the cavity 4 are formed along the joint of the dies 2 and 3 as a molding section

The present invention is constituted such that chambers 13 and 14, independent from cavity 4, are formed at the rear side of a set of dies 2 and 3 for molding a molded foam product, first openings 30a and 30b opening to the cavity 4 are formed along the joint of the dies 2 and 3 as a molding section of the dies 2 and 3, which is to mold a non-outstanding portion of the molded foam product, wherein the first openings 30a and 30b are connected to the external utility pipes 15-18 as different systems for the chambers 13 and 14, via inter-die passages 31a and 31b and internal pipes 32a and 32b, which are connecting passages, so as to supply or exhaust such utility fluid as steam and compressed air to/from the cavity 4 independently from the chambers 13 and 14. Vent holes, which are indispensable for dies of conventional molded foam products, are omitted so that the manufacturing cost of the dies is decreased, maintenance for the dies is simplified, control accuracy of utility fluid is improved, characteristics of the molded foam products are improved, and quality of the molded foam products is also improved.

대표청구항 ▼

The present invention is constituted such that chambers 13 and 14, independent from cavity 4, are formed at the rear side of a set of dies 2 and 3 for molding a molded foam product, first openings 30a and 30b opening to the cavity 4 are formed along the joint of the dies 2 and 3 as a molding section

The present invention is constituted such that chambers 13 and 14, independent from cavity 4, are formed at the rear side of a set of dies 2 and 3 for molding a molded foam product, first openings 30a and 30b opening to the cavity 4 are formed along the joint of the dies 2 and 3 as a molding section of the dies 2 and 3, which is to mold a non-outstanding portion of the molded foam product, wherein the first openings 30a and 30b are connected to the external utility pipes 15-18 as different systems for the chambers 13 and 14, via inter-die passages 31a and 31b and internal pipes 32a and 32b, which are connecting passages, so as to supply or exhaust such utility fluid as steam and compressed air to/from the cavity 4 independently from the chambers 13 and 14. Vent holes, which are indispensable for dies of conventional molded foam products, are omitted so that the manufacturing cost of the dies is decreased, maintenance for the dies is simplified, control accuracy of utility fluid is improved, characteristics of the molded foam products are improved, and quality of the molded foam products is also improved. yer has a thickness of less than 1 μm. 12. The method for manufacturing an electro-optic polymer waveguide device of claim 11, wherein the protection layer is substantially uniform in thickness. 13. The method for manufacturing an electro-optic polymer waveguide device of claim 4, wherein the upper cladding comprises a polymer material. 14. The method for manufacturing an electro-optic polymer waveguide device of claim 4, wherein the upper cladding comprises a material which does not dissolve the core layer. 15. The method for manufacturing an electro-optic polymer waveguide device of claim 4, wherein the step of electrode poling is performed at a temperature close to a glass transition temperature of the electro-optic polymer material. 16. The method for manufacturing an electro-optic polymer waveguide device of claim 15, wherein the step of electrode poling is performed for approximately 30-60 minutes. 17. The method for manufacturing an electro-optic polymer waveguide device of claim 4, wherein the step of electrode poling comprises the step of: applying an electric field of approximately 80-100 V/μm across the polymer layers. 18. The method for manufacturing an electro-optic polymer waveguide device of claim 6, wherein the strip line electrode structure is electroplated to a thickness of approximately 3 μm.