Title:
MANUFACTURING METHOD FOR ROAD CONE BODY
Document Type and Number:
Japanese Patent JP2022168705
Kind Code:
A
Abstract:
To provide a manufacturing method for road cone bodies in which a rational method other than hole drilling is used and wind pressure can be reduced.SOLUTION: A core-sheath type composite filament is prepared whose core component is polyethylene terephthalate and whose sheath component is copolyester or polyolefin having a lower melting point than the melting point of polyethylene terephthalate. Multifilament yarn is obtained by bundling the plurality of core-sheath type composite filaments. The multifilament yarn is applied to a knitting machine to knit extensible tubular fabric. The extensible tubular fabric is laid over the surface of the truncated cone mold. At this time, appropriately extending it forms watermarks. Then, heat and pressure are applied to melt the sheath component of the core-sheath type composite filament in the multifilament yarn. Thereafter, by cooling, the core-sheath type composite filaments are fused and integrated to obtain a road cone body with watermarks.SELECTED DRAWING: Figure 2
Inventors:
YAMANA MICHINORI
Application Number:
JP2021074359A
Publication Date:
November 08, 2022
Filing Date:
April 26, 2021
Export Citation:
Assignee:
UNITIKA TECHNOS KK
International Classes:
E01F9/623; E01F9/608; E01F9/654; E01F13/02
Attorney, Agent or Firm:
Okumura Shigeki
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