Pet toy and manufacturing method thereof

Abstract

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.

Claims

1. A plastic article comprising 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 plastic article is a pet toy.

2. The plastic article as in claim 1, wherein each of the expanded thermoplastic polyurethane foam beads is in spherical or ellipsoid shape.

3. The plastic article as in claim 1, wherein the adhesive comprises 46-50 weight percentage of methylenedi-p-phenylene diisocyanate and 50-54 weight percentage of 1-isocyanato-2-[(4-isocyanatophenyl)methyl]-benzene.

4. The plastic article as in claim 1, wherein ratio of the expanded thermoplastic polyurethane foam beads to the adhesive is 0.7-0.8:0.2-0.3.

5. The plastic article as in claim 1, wherein the plastic article has a tensile strength of 1400 KPa, a resilience of 60% and a water absorption rate of less than 2%.

6. A manufacturing process of the plastic article as in claim 1 comprising the following steps: a. Preparing a plastic material 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/L; b. Preparing the plastic article by molding the plastic material in a mold at a temperature of 50-120 C. for 5-10 minutes; wherein the plastic article is a pet toy.

7. The manufacturing process as in claim 6, wherein molding is performed at a temperature of 100-120 C. for 5-6 minutes.

Description

DETAILED DESCRIPTION OF THE INVENTION

Embodiment 1

[0014] In Embodiment 1, the pet toy is manufactured by the following steps:

[0015] a. Preparing a plastic material by bonding expanded thermoplastic polyurethane foam beads with an adhesive; wherein 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/L; the ratio of the expanded thermoplastic polyurethane foam beads to the adhesive is 0.7:0.3; the adhesive comprises 50 weight percentage of methylenedi-p-phenylene diisocyanate and 50 weight percentage of 1-isocyanato-2-[(4-isocyanatophenyl)methyl]-benzene.

[0016] b. Preparing the pet toy by molding the plastic material in a mold at a temperature of 50 C. for 10 minutes.

Embodiment 2

[0017] In Embodiment 2, the pet toy is manufactured by the following steps:

[0018] a. Preparing a plastic material by bonding expanded thermoplastic polyurethane foam beads with an adhesive; wherein 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/L; the ratio of the expanded thermoplastic polyurethane foam beads to the adhesive is 0.8:0.2; the adhesive comprises 46 weight percentage of methylenedi-p-phenylene diisocyanate and 54 weight percentage of 1-isocyanato-2-[(4-isocyanatophenyl)methyl]-benzene.

[0019] b. Preparing the pet toy by molding the plastic material in a mold at a temperature of 120 C. for 5 minutes.

Embodiment 3

[0020] In Embodiment 3, the pet toy is manufactured by the following steps:

[0021] a. Preparing a plastic material by bonding expanded thermoplastic polyurethane foam beads with an adhesive; wherein 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/L; the adhesive is in form of diphenylmethane diisocyanate; the ratio of the expanded thermoplastic polyurethane foam beads to the adhesive is 0.75:0.25; the adhesive comprises 48 weight percentage of methylenedi-p-phenylene diisocyanate and 52 weight percentage of 1-isocyanato-2-[(4-isocyanatophenyl)methyl]-benzene.

[0022] b. Preparing the pet toy by molding the plastic material in a mold at a temperature of 100 C. for 6 minutes.

[0023] The above embodiments are preferred embodiments of the present invention. The present invention is capable of other embodiments and is not limited by the above embodiments. Any other variation, decoration, substitution, combination or simplification, whether in substance or in principle, not deviated from the spirit of the present invention, is replacement or substitution of equivalent effect and falls within the scope of protection of the present invention.