Printing – Stenciling – Stencils
Patent
1995-11-07
1997-04-22
Funk, Stephen R.
Printing
Stenciling
Stencils
428195, 428373, B41N 124
Patent
active
056221096
ABSTRACT:
A heat-sensitive stencil sheet consisting of a porous substrate and a thermoplastic film adhered to the substrate is provided without no use of an adhesive. The porous substrate comprises a screen cloth wholly or partially consisting of conjugate fibers (a sheath-core type or a side-by-side type) one exposed component of which has an affinity with the thermoplastic resin film and having a melting point lower than that of the other component of the conjugate fiber and lower than that of the thermoplastic resin, and the screen cloth is adhered to the thermoplastic resin film through the exposed component. The heat-sensitive stencil sheet can be produced by superposing the thermoplastic resin film on the substrate and heating under pressure the superposed film and substrate at the softening point or higher of the above exposed component of the conjugate fiber and at a temperature lower than the melting point of the other component of the conjugate fiber and lower than the melting point of the thermoplastic resin.
REFERENCES:
patent: 4597829 (1986-07-01), Sato et al.
patent: 4959260 (1990-09-01), Tomoyasu et al.
Chonan Satoshi
Ikejima Shoichi
Koishihara Takeshi
Shibuya Ken-ichi
Yamanaka Tetsu
Funk Stephen R.
Riso Kagaku Corporation
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