A hollow foam shaft and its processing technology

Abstract

The invention discloses a hollow foam shaft, which comprises an outer cladding layer and an inner lining layer, the outer cladding layer is a hollow cylinder, a groove is arranged inside the outer cladding layer, the inner lining layer is arranged in the groove, and the outer cladding layer The surface is provided with staggered massage bumps, the shape of the inner lining layer is a hollow cylinder with openings at both ends, the wall thickness of the inner lining layer is the same as the depth of the groove, the invention has low cost, fewer procedures and short production cycle. The processing method is scientific, no glue is used, energy saving and environmental protection, the surface material of the produced foam shaft has no splicing, uniform hardness, high strength pattern skin, no cracking, bright appearance, bright color, high rebound rate, durable and no deformation.

Description

technical field [0001] The invention belongs to the technical field of rubber and plastic products, and in particular relates to a hollow foam shaft and a processing technology thereof. Background technique [0002] With the continuous improvement of people's living standards, people pay more attention to physical health. Yoga is the preferred item for physical fitness, and foam shafts are ideal auxiliary tools commonly used by yoga practitioners. Most of the foam shafts currently on the market use surface layers. It is a product with patterned EVA material and a plastic hard tube inside that is cut, glued, and molded. , many processes, long production cycle, and low utilization rate of raw materials: the utilization rate of the original board can only reach about 70% through peeling, edge removal, and chamfering during the processing of EVA original board; in addition, although the glue that can meet environmental protection requirements is used, It only shows that the tox...

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of people's living standards, people pay more attention to physical health. Yoga is the preferred item for physical fitness, and foam shafts are ideal auxiliary tools commonly used by yoga practitioners. Most of the foam shafts currently on the market use surface layers. It is a product with patterned EVA material and a plastic hard tube inside that is cut, glued, and molded. , many processes, long production cycle, and low utilization rate of raw materials: the utilization rate of the original board can only reach about 70% through peeling, edge removal, and chamfering during the processing of EVA original board; in addition, although the glue that can meet environmental protection requirements is used, It only shows that the toxicity of the glue is currently within an acceptable range, and it is not 100% environmentally friendly; moreover, the glue seam strength of the EVA material will be lower than that of other parts, which will shorten the service life of the foam shaft; the surface of the finished product is molded The hardness of the pattern varies greatly; since the surface blank of the foam shaft is made of EVA foam material with the same thickness, the pressure on the surface of the product is different due to the depth of the pattern when it is loaded into the shaping mold with the pattern. Hardness is also different (outer hard and inner soft, the difference is 8-10 degrees), and the inner plastic hard tube will be deformed due to high pressure and improper use, shortening the service life, so a better quality, more environmentally friendly and durable tube is needed. foam roller

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