Patent Application
20090061128
1. Field of the Invention
This invention relates to a silicone bakeware, particularly to one having at least one support wire ring in outer surfaces of the silicone bakeware, and plural shuttles fitted and spaced apart properly on the at least one support wire ring and each provided with plural tooth grooves in an outer surface. Therefore, when the silicone bakeware is formed by injecting molding process, the shuttles can keep the at least one support wire ring just in the center of the groove of a mold used for forming the silicone bakeware by injecting process. Moreover, the shuttles can reinforce the at least one support wire ring for preventing it from disfiguring.
2. Description of the Prior Art
A conventional silicone bakeware 1 shown in
However, there are some disadvantages in the process of forming the conventional silicone bakeware 1 by a mold, as described below.
1. The steel wire 11 is to be in advance placed in a groove (A10) of the mold (A), and the groove (A10) has to be provided with plural support posts (A100) for keep the steel wire 11 in position. When the finished silicone bakeware 1 is taken out of the mold, the support posts (A100) may form holes 12 in the upper rim 10 of the silicone bakeware 1, with the steel wire 11 exposing out at the holes 12, so consequently the silicone bakeware 1 is impossible to be used in a micro wave oven.
2. In processing, the steel wire 11 is dangling in the groove (A10) of the mold (A), not kept in position by any means, resulting in high failure in the finished products. Or the steel wire 11 is welded in the upper rim or inserted therein in the incorrect position, very difficult to position the steel wire 11 in the correct location, complicating its process.
3. The steel wire 11 is placed in advance in the groove (A10) of the mold (A) before injecting, so the steel wire 11 is easily shifted away from its correct position by instant impact of injecting silicone rubber material in the mold (A).
4. The steel wire 11 is placed in advance in the groove (A10) of the mold (A) is apt to disfigure, or have its welded point disrupted by instant impact of the silicone rubber injected in the mold (A), resulting in incomplete wrapping of the steel wire 11 to become an unqualified product.
The objective of the invention is to offer a silicone bakeware having at least one support wire ring wrapped up in outer surfaces of the silicone bakeware and a plurality of shuttles fitted and spaced apart properly on the at least one support wire ring. Each of the shuttles is provided with plural tooth-shaped grooves in an outer surface. The at least one support wire ring fitted with the shuttles is in advance placed in a groove of a mold and can be kept immovable by the shuttles in the center of the groove of the mold without biasing during injecting silicone rubber material in the mold for forming the silicone bakeware. Thus the support wire ring fitted with the shuttles is completely wrapped up by the silicone rubber material in a balanced condition, with the shuttles increasing the stress of the at least one support wire ring without possibility of disfiguring, stepping up the sustaining force of the at least one support wire ring for the silicone bakeware.
The main feature of the invention is to provide a silicone bakeware having at least one support wire ring wrapped up in outer surfaces of the silicone bakeware and a plurality of shuttles fitted and spaced apart properly on the at least one support wire ring, each of the shuttles provided with a passageway.
This invention will be better understood by referring to the accompanying drawings, wherein:
A first preferred embodiment of a silicone bakeware 2 in the present invention, as shown in
Next, as shown in
In injecting process, as shown in
Next, a second preferred embodiment of a silicone bakeware 2 in the invention, as shown in
The invention has the following advantages as can be seen from the foresaid description.
1. The at least one support wire ring 3 is kept in position by the shuttles 4 in the grooves (A21) of the female mold (A2) without biasing during forming the silicone bakeware 2, so it is completely wrapped up in a balanced condition after the silicone bakeware 2 is finished
2. The quantity of the shuttles 4 can be reduced or increased according to the size of the at least one support wire ring 3 or the weight that the support wire ring 3 is to be sustained, for augmenting the stress of the support wire ring 3 and preventing it from disfiguring during injection of silicone rubber material in the mold.
3. The shuttles 4 provided with the tooth-shaped grooves 41 and made of silicone rubber material the same as that of the silicone bakeware 2 are possible to be completely integrated with the silicone bakeware 2.
4. The at least one support wire ring 3 can be made of high molecule plastic containing fiber, easy to be shaped by injecting forming process and possible to be made in any geometrical shape. Moreover, the plastic has a similar heat expansion coefficient with that of the silicone rubber, extremely compatible with each other, with no tolerance alteration by heat expansion and cooling shrinkage so that the two materials are easily combined with each other, in addition to a better effect of injecting in a balanced condition.
5. The at least one support wire ring 3 can be placed in outer surfaces of the silicone bakeware 2 such as in the upper rim 20 or in the sidewall or in the bottom of the silicone bakeware 2 according to necessity.
While the preferred embodiments of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.
