|Τεχνικές προδιαγραφές (στα Αγγλικά)
Τεκμηρίωση (στα Ιταλικά)
This type is used as an alternative to rubber pliable, for the reproduction of large objects such as statues, rocks, and large architectural reliefs. You get the casts thinner, with a thickness of 3 to 4 mm. called "skin", with the advantage of a lower consumption of material, application speed and a good penetration in detail.
This rubber is characterized by a good flowability and thixotropy, which is the property does not run from vertical surfaces, even if applied to thick. The product is applied with a brush, a practical and fast. With one hand you can reach 1 to 2 mm. If you want to get a thicker, more passes are needed.
The basic component is a creamy gray pearl, the catalyst "TIXO BLUE" is a thick liquid, and must be added in the dose of 5%. Merges with a spatula until the mixture takes on a light blue uniform. The pot life of the mixture is about one hour.
It is applied as the first step a thin layer of rubber with a brush with short bristles, and imparts to penetrate well the product in detail, taking care not to leave air bubbles. When a portion of the model has been thoroughly covered, it passes reinforcing layer with the contribution of any material until it reaches a thickness of approx. 2 mm. Continue the same way up to cover the entire model. If one wants to obtain a skin of thicker consistency needed more passes, after the previous has cured.
In casts of large size it is advisable to reinforce the rubber skin with gauze to increase its resistance to tearing. The gauze is inserted into strips during the application of the second coat, and then covered with the same rubber.
It 's also possible to use the Tixo as the first layer in the models very detailed, in order to fill the undercut, such as folds of garments, and then complete the mold with rubber to casting. In this way it avoids the risk of retention of air bubbles.
In the molds to the skin with the rubber TIXO sometimes necessary to regularize the outer surface, filling all the niches or recesses, which could create footings and obstruct the extraction of the hood. When the rubber is vulcanized TIXO pliable rubber is used to fill cavities and get the extrados surface with softened corners without undercut. There is no risk of delamination between the two tires if the carryover is carried out within 48 hours.
Both the casts to the skin obtained with the rubber TIXO that those with the type mouldable in need of a dolly, a hood in plaster or fiberglass to maintain then the mold in the correct position during use.