Plastic product disposed on a strap

#The present invention relates to an injection molding product, and more specifically, to a plastic product disposed on a strap with a better aesthetic appearance and an enhanced combination strength.

#A soft strap can be combined with a plastic product to form an assembly, e.g., an injection zipper puller assembly, also called as an injection zipper slider assembly, or a bead string assembly, which is widely used on clothes, luggage and bags. The plastic product can be formed on an end portion of the strap and manufactured by a single injection molding process.

#However, since the strap is flexible and extendable, it is difficult to fix the end portion of the strap during the single injection molding process. A displacement of the end portion of the strap may cause the end portion of the strap to be exposed out of and not completely covered by the plastic product, which not only negatively affects aesthetic appearance and increases a defect rate but also makes the plastic product and the strap separate from each other easily.

#FIG. 1 is a sectional diagram of an assembly formed by a plastic product and a strap according to a first embodiment of the present invention.

#FIG. 2 is a sectional diagram illustrating a combining interface of a first injection molding portion and a second injection molding portion of the plastic product according to the first embodiment of the present invention.

#FIG. 3 is a sectional diagram of an assembly formed by a plastic product and a strap according to a second embodiment of the present invention.

#In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings which form a part hereof, and in which is shown by way of illustration specific embodiments in which the invention may be practiced. The directional terminology is used for purposes of illustration and is in no way limiting. Accordingly, the drawings and descriptions will be regarded as illustrative in nature and not as restrictive.

#Please refer to FIG. 1, FIG. 2 and FIG. 11 to FIG. 14. FIG. 1 is a sectional diagram of an assembly P1 formed by a plastic product 2a and a strap 1a according to a first embodiment of the present invention. FIG. 2 is a sectional diagram illustrating a combining interface 20a of a first injection molding portion 21a and a second injection molding portion 22a of the plastic product 2a according to the first embodiment of the present invention. FIG. 11 to FIG. 14 are diagrams of the assembly P1 at different views according to the first embodiment of the present invention. As shown in FIG. 1, FIG. 2 and FIG. 11 to FIG. 14, the assembly P1 is formed by the strap 1a and the plastic product 2a combined with the strap 1a. The strap 1a can be a soft string type textile. The plastic product 2a can cover an end portion 10a of the strap 1a and formed by the first injection molding portion 21a and the second injection molding portion 22a combined with the first injection molding portion 21a.

#As shown in FIG. 1 and FIG. 2, the strap 1a has a first dimension along a longitudinal direction and a second dimension along a radial direction perpendicular to the longitudinal direction, and the first dimension is much greater than the second dimension. In other words, the strap 1a can have a greater length along an x-axis direction shown in FIG. 1 and FIG. 2 and a shorter radius along a y-axis direction shown in FIG. 1 and FIG. 2.