An injection molding apparatus for generally toroidal or donut-shaped articles having a hollow interior includes a hollow-interior forming member that is positioned within the mold cavity during injection to form the hollow interior of the article, and that is moved away from the mold cavity to allow removal of the molded article when the injection molding apparatus is opened following molding. The hollow-interior forming member includes an open section or gap that is closed by a gap-filling member when the injection molding apparatus is closed. When the injection molding apparatus is opened following molding, the gap-filling member vacates the open section or gap to enable the molded article to be manually separated from the annular member.

Embodiments of the invention are directed to a modeling compound molding system. The molding system is generally comprised of an openable interlocking molding device, the openable interlocking molding device is configured to cast external features onto a modeling compound surface by securing the modeling compound within a molding cavity of the openable interlocking molding device.

An improved method for manufacturing plastic and rubber toys, including: (1) placing a fabric material into a mold for fixation according to a toy design requirement; (2) directly injecting a plastic or rubber material onto a surface of the material; (3) performing demolding to form a primary injection molded member, where the plastic and rubber material is wrapped with the fabric material; (4) when a product requires a fabric coverage rate of 100%, directly performing step (6); (5) when a product requires a fabric coverage rate of less than 100%, placing the primary injection molded member into another mold, performing secondary injection molding to form a secondary injection molded member larger than the primary; (6) placing two primary or secondary injection molded members into a mold of a hot melting machine to perform hot melt adhesion or apply a glue to complete adhesion, to form a finished product.

The present invention relates to a pet toy and manufacturing method thereof. The pet toy comprises a plastic material formed by bonding expanded thermoplastic polyurethane foam beads with an adhesive; wherein each of the expanded thermoplastic polyurethane foam beads is in an irregular spherical shape; each of the expanded thermoplastic polyurethane foam beads has a length of 3-6 mm in each of x, y, z directions; each of the expanded thermoplastic polyurethane foam beads has a weight of 20-30 mg; the expanded thermoplastic polyurethane foam beads have a bulk density of 100-150 g. The pet toy has a high tensile strength, a high resilience, a low water absorption rate and a light weight.

A A molar toy contains: a body and an annular member. The body is made of flexible material and is formed in a capsule shape, and the body includes a hollow cavity defined therein, a first opening and a second opening which communicate with the hollow cavity and exterior environment. The annular member is inserted into the first opening and the second opening of the body so that a part of the annular member is accommodated in the hollow cavity of the body.

A play ball has a rubber shell filled with resilient foam having an entire outer peripheral surface thereof intimately attached by heat fusion and adhesive to an entire interior surface of the shell. Such attachment enables the foam to provide additional resiliency by foam tension, as well as by foam compression, thereby significantly extending the effective bounce life of the ball. A seamed dog chew toy has essentially similar construction such that the increased retention force provided by the intimate attachment of the foam to the shell resists the chewing force of the dog popping a seam improving durability.

Novel polylactic acid biopolymer systems and methods of producing products with polylactic acid biopolymers are disclosed. Products produced according to the systems and methods disclosed herein have enhanced deflection temperature and improved mechanical performance when compared to conventional injection moulding processes. Systems and methods for compounding polylactic acid biopolymer and creating an object using a polylactic acid biopolymer by extrusion and injection moulding process are described.

The invention relates to a composition comprising A) a polyester, B) a polyolefin and C) a compatibilizer, wherein A) comprises a first polyester derived from an aromatic dicarboxylic acid, an acyclic aliphatic diol and at least one of a cycloaliphatic diol and spiroglycol and a second polyester different from the first polyester. The invention further relates to an article comprising the composition, particularly a toy block.

A giant foam building block for children includes an inner core, an outer layer and a barrier skin. The inner core is made of foam or expanded polystyrene having a lower density than the outer layer. The inner core is softer than the outer layer, but both have a hardness less than 20 Shore A. A resin is sprayed onto the inside surface of a mold before the inner core is placed in the mold and the outer layer is molded around the inner core. The outer layer is molded such that an integral skin forms on the inner surface of the mold. The resin attaches to the integral skin and together forms a barrier skin that becomes the outer surface of the block. The block has no covering over the barrier skin. Children are not exposed to the TDI-based foam core which is sealed off by the outer layer.

A toy projectile and method of making the toy projectile is provided herein. The toy projectile having: an elongated dart body secured to a tip assembly, the tip assembly comprising: a tip insert secured to a forward end of the elongated dart body and a tip secured to the tip insert, wherein the tip comprises a styrene ethylene butylene styrene copolymer (SEBS rubber) tip.