Blow-molding method
US-2017341285-A1 · Nov 30, 2017 · US
Extrusion material supply device and optical transmission body manufacturing method using the same
US8945669B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8945669-B2 |
| Application number | US-201013258182-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 26, 2010 |
| Priority date | Mar 23, 2009 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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The invention provides an extrusion material supply device suitable for use in melt extrusion molding, and a method for manufacturing an optical transmission body, in which a deterioration of an optical signal transmission loss is extremely small, and productivity intrinsic to an extrusion molding method is provided in combination. An extrusion material supply device 1 includes: a vertical hopper 2 , which has a cooling unit 3 and a heat melting unit 4 continuous with a lower portion thereof, and houses a material rod R; cooling means 5 for cooling the cooling unit 3 ; an electric heater 6 that heats the heat melting unit 4 ; and gas pressurizing means 7 for sequentially supplying molten plastics M to a metal die by a gas pressure. The heat melting unit 4 is formed into a cylinder shape in which an inner diameter is larger than an inner diameter of the cooling unit 3 arranged above, and enables the molten plastics M to spread in the heat melting unit 4 . A portion between an outer circumference of the material rod R and an outer circumference of the molten plastics M is defined as an annular gas pressurizing surface 7 a.
First claim
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The invention claimed is: 1. An extrusion material supply device that heat melts a rod-like plastic material and supplies the rod-like plastic material to a metal die, the extrusion material supply device comprising: a container in which the rod-like plastic material is housed; a heat melting unit that is provided on a downstream side of the container and heat melts a lower end portion of the rod-like plastic material; heating means for heating the heat melting unit; and gas…
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Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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- What does patent US8945669B2 cover?
- The invention provides an extrusion material supply device suitable for use in melt extrusion molding, and a method for manufacturing an optical transmission body, in which a deterioration of an optical signal transmission loss is extremely small, and productivity intrinsic to an extrusion molding method is provided in combination. An extrusion material supply device 1 includes: a vertical ho…
- Who is the assignee on this patent?
- Okamoto Tazuru, Yoshida Hirotsugu, Koike Yasuhiro, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification B29C48/475. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).