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Composite life-saving float and its producing method

A manufacturing method and floating core technology, which are used in ship construction, ships, foldable/inflatable hulls, etc., can solve the problems of unstable quality, low strength, easy corrosion, etc., and achieve reliable performance, improved performance, and high mechanical strength. Effect

Inactive Publication Date: 2004-12-15
黄锡安
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The quality of this product is not stable enough in use, and it is easy to fade, age, corrode, and have low strength
The State Administration of Ship Inspection pointed out in the 1992 ship production word (680) that life-saving products with polystyrene as the buoyant core had many obvious deficiencies. Since June 30, 1993, this product was prohibited from being used in international navigation areas.

Method used

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  • Composite life-saving float and its producing method
  • Composite life-saving float and its producing method

Examples

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Embodiment Construction

[0020] The composite lifesaving buoy designed by the present invention includes a shell 1 and a floating core 2. The shell 1 is extruded from high-density polyethylene through a plastic extruder. The shell is composed of four sections (or two sections), and the two ends of each section It is designed so that the diameter of one end is larger than that of the other end and can form a tight fit with each other. The four sections of shells are fitted together to form a complete lifesaving buoy. Rivets are used to fix (or glued) the joints between two adjacent sections, and four evenly distributed grooves 3 for mounting reflective materials (the grooves can be six or eight) are arranged on the housing. The shell is provided with reinforcing ribs 4 bundled with metal ropes. The rigid polyurethane foam is injected into the shell and foamed on site to form the buoyant core 2 .

[0021] When manufacturing the housing with an extruder and a mould, the inboard of the housing is prefabr...

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Abstract

The composite life-saving float consists of casing of high density polyethylene plastic and float core of hard foamed polyurethane and filling the casing. The casing is provided with notches for installing reflecting material, is assembled with sections and has inside reinforcing ribs. The manufacture process includes extruding hollow casing sections, assembling the casing, filling the casing with hard polyurethane and foaming. The present invention has high mechanical strength, high shock resistance, high oil resistance, high wear resistance, and high floating and water resistant performance.

Description

1. Technical field [0001] The present invention relates to a life-saving device and its manufacturing method, in particular to a composite life-saving buoy and its manufacturing method. For use on ships. 2. Background technology [0002] At present, the standard adopted by domestically produced life-saving buoys is GB449-65 "Plastic Life-saving Buoys". [0003] The product uses polystyrene as the floating core, covered with cloth, and painted on the cloth. The quality of this product is not stable enough in use, and it is easy to fade, age, corrode, and have low strength. State General Bureau of Ship Inspection pointed out in 1992 ship production word (680) that the life-saving product with polystyrene as buoyant core had many obvious deficiencies, and since June 30, 93, this product was prohibited from being used in the international navigation area. National Bureau of Fishery Vessel Inspection also points out in Guo Yujian (production) [2002] No. 94 document: stop using...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/04B63B7/06
Inventor 黄锡安包国平
Owner 黄锡安
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