Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With bending – folding – winding – or wrapping means
Patent
1979-03-23
1981-02-17
Weston, Caleb
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With bending, folding, winding, or wrapping means
156497, 156498, 156499, B32B 3120, B32B 3500, C09J 502
Patent
active
042513120
ABSTRACT:
A method and apparatus for forming a longitudinal hem along one edge of a fabric using a hot melt adhesive for securement of the hem. The fabric is advanced along a predetermined path of travel while one longitudinal edge portion of the fabric is directed through an elongate heating chamber and heated to an elevated temperature. The heated edge portion of the fabric then passes through a folding station and the fabric is folded to form a hem. A stream of molten hot melt adhesive is deposited between the overlying fabric layers which define the longitudinal hem and pressure is applied to the hem to cause the molten adhesive to spread and penetrate into the fabric layers and to also prevent relative movement between the fabric layers until the adhesive has sufficiently cooled to secure the hem together.
REFERENCES:
patent: T926010 (1974-09-01), Elliott
patent: 1041130 (1912-10-01), Maxwell et al.
patent: 3038982 (1962-06-01), Ludlow
patent: 3143456 (1964-08-01), McGrath et al.
patent: 3242025 (1966-03-01), Copp
patent: 3654051 (1972-04-01), Purcell et al.
patent: 3671355 (1972-06-01), Paymal
patent: 3988192 (1976-10-01), Landis et al.
Hutcherson Henry S.
Ziegler, Jr. George E.
Fieldcrest Mills, Inc.
Weston Caleb
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