Method and apparatus for forming a down feather sheet by heat injection
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United States of America Patent
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Feb 16, 2021
Grant Date -
Oct 17, 2019
app pub date -
Apr 16, 2018
filing date -
Apr 16, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A method and an apparatus for forming a down feather sheet is described and wherein a mixture of down feathers and a binder material is fused together by injecting hot air under pressure into the mixture. A plurality of hot air injection needles are caused to penetrate into a layer of the mixture as it is conveyed along a conveyor and to release hot air at a temperature sufficient to cause the binder material to fuse together and to the down causing the down and the binder material to be trapped into the layer. The displacement of the hot air injection mechanism is synchronized to the conveying speed and the projection of the needles into the layer is adjusted to the thickness of the layer being conveyed.
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International Classification(s)
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- D06M:TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D0....
- B29K:INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, ....
- B29L:INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RE....
- B68G:METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLST....
- D04H:MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAME....
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