Production method for dip-molded article
AssigneeZeon Corporation
InventorMasaru Kitagawa
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Abstract
A method for producing a dip-molded article, including a dip-molding step of dip-molding a latex composition containing a latex of a carboxyl group-containing conjugated diene-based rubber (A) and a water-soluble metal compound (B) using a dip mold to form a dip-molded layer on the surface of the dip mold; a moisture content adjustment step of adjusting the moisture content of the dip-molded layer formed on the surface of the dip mold to 1 to 30 wt %; and a beading step of performing beading after the adjusting of the moisture content, the beading including peeling a portion of the dip-molded layer formed on the surface of the dip mold from the dip mold.
Claims15
A method for producing a dip-molded article, comprising:
- a dip-molding step of dip-molding a latex composition containing a latex of a carboxyl group-containing conjugated diene-based rubber (A), a water-soluble metal compound (B), and an alcoholic hydroxyl group-containing compound (C), wherein the alcoholic hydroxyl group-containing compound (C) comprises both a sugar alcohol (c2) and a hydroxy acid salt (c4), using a dip mold to form a dip-molded layer adhering to the dip mold on the surface of the dip mold;
- a moisture content adjustment step of heating the dip-molded layer adhering to the dip mold at 20 to 80° C. for 1 to 20 minutes to adjust the moisture content of the dip-molded layer adhering to the dip mold to 1 to 30 wt %;
- and
- a beading step of performing beading after the adjusting of the moisture content, the beading including peeling a portion of the dip-molded layer adhering to the dip mold in a state where the moisture content of the dip-molded layer is controlled to 1 to 30 wt %, wherein
- the hydroxy acid of the hydroxy acid salt (c4) is selected from the group consisting of glycolic acid, lactic acid, tartronic acid, glyceric acid, malic acid, tartaric acid, and citric acid, and
- a weight ratio of an amount of the water-soluble metal compound (B) to an amount of the alcoholic hydroxyl group-containing compound (C) in the latex composition is 1:0.1 to 1:50, where the amount of the alcoholic hydroxyl group-containing compound (C) is a total amount of an amount of the sugar alcohol (c2) and an amount of the hydroxy acid salt (c4), together with an amount of a saccharide (c1) and/or an amount of a hydroxy acid (c3) optionally present in the latex composition as additional alcoholic hydroxyl group-containing compound (C).
Dependencies are inferred from the claim text.