A kind of sponge ball and preparation method

Abstract

The invention belongs to the fabrication field of protective gaskets and in particular relates to a sponge ball and a fabrication method thereof. The sponge ball sequentially comprises a first plush fabric layer, a first hot melt adhesive membrane layer, a composite foam layer, a second hot melt adhesive membrane layer and a composite plush fabric layer from the surface in contact with a human body to outside, wherein the composite plush fabric layer comprises a gridding cloth layer in contact with the second hot melt adhesive membrane layer and a second plush fabric layer adhered to a nylon sticky hook of a device to be used, the foam layer is adhered between the gridding cloth layer and the second plush fabric layer, and the first hot melt adhesive membrane layer and the second hot melt adhesive membrane layer are adhered into one body at the periphery of the composite foam layer through heat sealing, so that a capsule space with the composite foam layer in the middle is formed, and an air hole is formed at the center position of the second hot melt adhesive membrane layer. When arranged in a helmet or other devices, the sponge ball can slide with the movement of a human body, can reduce the friction force and can prevent cervical vertebra or other parts of the human body from being injured in the situation that the device moves but the human body cannot move under the action of an external force.

Description

Technical field [0001] The invention belongs to the field of preparation of protective pads, and in particular relates to a sponge ball used in helmets, automobiles and large vehicles of airplanes, and individual protective equipment pads and a preparation method. Background technique [0002] Sponge ball is also called magic ball. In helmets or other protective fields, it can be used as a buffer layer to replace the commonly used suspension system. Its working principle is to reduce the damage to internal organs caused by external pressure by buffering deformation. [0003] The magic ball on the existing market is not waterproof, corrosion-resistant, and has a poor comfort. The stitching of the needle and thread is easy to separate and crack, and the production efficiency is relatively low. In addition, the existing sponge ball is in use, when wearing a helmet when receiving external force Because the sponge ball cannot move, the friction between the head and the sponge ball is la...

AI Technical Summary

Problems solved by technology

[0003] The existing magic balls on the market are not waterproof, not corrosion-resistant, not comfortable, the stitches are easy to split, and the production efficiency is relatively low. , because the sponge ball cannot move, the friction between the head and the sponge ball is large, which will affect the cervical spine or other parts of the body

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