Epoxy resin coating and long-term preservation method for balloon products

Abstract

This invention relates to a method for epoxy resin coating and long-term preservation of balloon products. The method involves selectively pre-injecting low-viscosity epoxy resin into the interior of the balloon to form an inner film, followed by a single-layer or multi-layer epoxy resin coating on the exterior. This is combined with a rotary curing support and a drop-coating finishing process to achieve uniform resin distribution, air bubble removal, and a smooth surface. Balloons treated with this method effectively delay deflation, maintain shape stability, and extend their shelf life. It offers advantages such as low cost, high efficiency, and applicability to various balloon art, display, and permanent preservation.

Claims

1. A method for epoxy resin coating and long-term preservation of an expandable membrane, characterized by comprising the following steps: (a) inflating an expandable membrane to form a three-dimensional balloon shape; (b) coating the outer surface of the three-dimensional balloon shape with epoxy resin in a single layer or multiple layers to form an outer resin coating; (c) during the curing of the outer resin coating, rotating the three-dimensional balloon shape using a rotary coating and curing device, so that the epoxy resin is evenly distributed and cured under gravity to avoid local accumulation or sagging, forming an outer resin coating that provides structural support and maintains the three-dimensional balloon shape; wherein, The method may optionally include pre-coating the interior of the expandable membrane with a layer of low-viscosity epoxy resin to form an inner membrane before inflation, in order to delay gas escape and enhance structural stability.

2. The method according to claim 1, wherein the epoxy resin is a transparent or near-transparent resin material that can be cured at room temperature, and may be a two-component (AB agent) or other resin composition with equivalent curing properties.

3. The method according to claim 1, wherein the coating method includes operation using a silicone brush, a flexible brush, syringe dripping, low-pressure spraying, or immersion.

4. The method according to claim 1, wherein after the three-dimensional balloon shape is coated, it is dried by a device that allows it to rotate or move, so as to ensure that the resin layer is evenly distributed and to avoid local accumulation or bubble formation.

5. The method according to claim 1, wherein the multilayer coating is performed after the previous layer of resin has reached a partially cured state, so as to reduce air bubbles and improve surface uniformity and storage stability.

6. According to the method described in claim 1, the seams, detailed areas or joints between multiple parts of the three-dimensional balloon shape are finely reinforced and assembled by drip coating or coating method to ensure the overall structural strength and appearance integrity.

7. According to the method described in claim 1, the three-dimensional balloon shape can be surface-polished, sanded, or coated with another layer of epoxy resin after curing to enhance gloss and detail.

8. The method according to claim 1, wherein a transparent coating with UV protection is applied to the outermost layer to delay yellowing and oxidation and improve weather resistance.

9. The method according to claim 1, wherein the expandable membrane may be made of latex, polyurethane, nylon or other elastic material, and is coated with epoxy resin to form an article with long-term structural stability and preservation.

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