Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2009-05-13
2011-11-08
Sells, James (Department: 1745)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C156S228000
Reexamination Certificate
active
08052821
ABSTRACT:
A method for manufacturing facemask structure includes following steps. A facemask with first folds is placed on a seat and a pressing body forces the facemask so as to form step-shaped structures. Then, two movable plates are used to form the step-shaped structures as second folds on the facemask. Thereby, the mask can be stretched both vertically and horizontally, in a way that the mask body becomes more three-dimensional, fitting more firmly to the contours of a wearer's face, and providing more comfort and convenience than the conventional facemasks.
REFERENCES:
patent: 3664335 (1972-05-01), Boucher et al.
patent: 4300549 (1981-11-01), Parker
patent: 5803077 (1998-09-01), Gazzara
patent: 6394090 (2002-05-01), Chen et al.
patent: 6474336 (2002-11-01), Wolfe
Rosenberg , Klein & Lee
Sells James
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