Silicone sheet and surgical bandage manufactured using the same
AssigneeFujiyakuhin Co., Ltd.
InventorsHiroshi Muramatsu, Masaya Fujimoto
Life of this patent
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Abstract
The present invention relates to a silicone sheet obtained by integrally forming a silicone gel layer with a silicone elastomer layer to have a continuous heterogeneous structure, a surgical dressing using it and a manufacturing process of the sheet. The dressing according to the present invention exhibits excellent adhesion, protective properties and conformity when applied to the affected part and has excellent physical strength as a whole so that it can be manufactured efficiently and can be handled readily.
Claims19
A silicone sheet, which comprises an integrally formed silicone gel layer with a silicone elastomer layer, thereby having a continuous heterogeneous structure, which silicone sheet is produced by a process comprising:
- a) spreading an addition reaction curing silicone elastomer composition into a thin film;
- b) pouring an addition reaction curing silicone gel composition onto said thin film without curing;
- and
- c) curing said elastomer composition and gel composition simultaneously.
A silicone sheet, comprising an integrally formed silicone gel layer with a silicone elastomer layer, thereby having a continuous heterogeneous structure, wherein the silicone gel layer is formed by curing an addition reaction curing silicone gel composition which is composed mainly of (i) polyorganosiloxane having, in one molecule thereof, at least 0.5 silicon-bonded alkenyl groups on average, (ii) polyorganohydrogensiloxane having, in one molecule thereof, at least 2 silicone-bonded hydrogen atoms, with the proviso that a total number of the above-described alkenyl groups and the silicon-bonded hydrogen atoms is at least 5, and (iii) an addition reaction catalyst, and in which the silicon-bonded hydrogen atom in the component (ii) is incorporated to give a number of 0.5 to 0.98 relative to one alkenyl group in component (i).
Dependencies are inferred from the claim text.