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Particulate core preforming process

A particle core, pre-forming technology, applied in the direction of coating, etc., can solve the problem of not knowing the core material

Inactive Publication Date: 2007-01-24
KOHLER NEW ZEALAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it was not previously known how to inexpensively provide core materials with desired complex shapes

Method used

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  • Particulate core preforming process
  • Particulate core preforming process

Examples

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Embodiment Construction

[0007] The particle preforming process utilizes a core material which is applied by depositing the core material on a preformed porous surface such as a screen. The core material is first supplied in pellet form. Examples of suitable core materials include recycled plastics, aggregates, mineral and plant based materials. The core material can be shredded or minced to provide the desired particle size.

[0008] Such as figure 1 As shown in , the core material 2 is sprayed or ejected through a nozzle 4 . The core material 2 is also combined with a tacky adhesive. The tacky adhesive can be combined with the core material 2 and sprayed together through a single nozzle 4, or the binder can also be sprayed together with the injection of the core material 2 through a separate nozzle (not shown). Tacky adhesives are typically weak binders and are supplied as liquid latex or thermosetting powders.

[0009] Air is drawn through the screen 6 by means such as a fan 8 so that the comb...

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Abstract

A method of fabricating a preformed core material by utilizing a particulate preform process. The particulate core material is combined with an adhesive binder and deposited upon a porous surface (6), through which air is drawn, having the desired preform shape. Once the adhesive sets the deposited layer of core material is removed from the porous surface (6) and may be used as a core in a closed molding process. This method may also be used to fabricate a preformed laminate by depositing layers of fiber material before and / or after a core material is deposited.

Description

technical field [0001] The present invention generally relates to a pellet preforming process. More specifically, the present invention relates to a pellet preforming process that provides a core of filler material. Background technique [0002] In a conventional preforming process, fibers and binder are sprayed onto a porous surface, typically a screen, through which air is drawn. The fibers are held on the screen by the suction of the binder and air. Once the adhesive has hardened, the fibrous layer that has formed on the screen can be removed. The binder is typically a binder which may be in emulsion or powder form. Emulsions can be partially dried due to the airflow of the suction fan, whereas adhesives in powder form may require subsequent heating to activate the adhesive properties. [0003] The preforming process allows the formed layers to be made into complex shapes including complex three-dimensional shapes. Typically, the preform comprises a fibrous material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/30B29C33/38B29C70/02B29B11/16B29C67/02B29C41/50
CPCB29B11/16B29K2105/251B29C67/02B29C33/3814B29C41/50
Inventor M·奥利弗O·C·G·杰克逊-希尔
Owner KOHLER NEW ZEALAND