Process for plating shaped articles made of synthetic resins
AssigneesKabushiki Kaisha Toyoda Jidoshokki Seisakusho, Maeda Shell Service Co., Ltd.
InventorsKeizo Nishiyama, Sadao Maeda, Kohshi Iwata
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Abstract
A process for metal plating shaped articles, such as cast or molded articles of synthetic resins, includes the steps of (a) diffusing or scattering numerous fine metal particles (or pieces) over the surface and outermost layer of the articles, (b) etching exposed surfaces of the metal particles, (c) performing thereafter metal plating, (d) and thereby solidly combining or joining the plating layer and the articles through the medium of the fine metal particles, whereby the resulting plated articles are extremely eminent in abrasion and shock resistance which is essentially useful for casting and molding patterns or core boxes.
Claims11
Process for plating a casting tool of a synthetic resin, comprising the steps of:
- a. applying an adhesive agent over the surface of a master pattern used to shape said article;
- b. diffusing fine metal particles or pieces of non-uniform particle size over the layer of adhesive agent to cause said particles or pieces to settle densely over the surface of the master pattern;
- c. pouring said synthetic resin in a molten state in order to shape the casting tool further over said adhesive agent;
- d. solidifying the synthetic resin;
- e. separating the solidified synthetic resin from the master pattern;
- f. removing the adhesive agent to expose surfaces of the metal particles or pieces;
- g. etching the exposed surfaces of the metal particles or pieces;
- and
- h. chemically plating metal over the surface of the article.
Dependencies are inferred from the claim text.