Hollow foam roller and machining technology thereof

Abstract

The invention discloses a hollow foam roller. The hollow foam roller comprises an outer wrapping layer and an inside lining layer. The outer wrapping layer is a hollow cylinder. The inside of the outer wrapping layer is provided with a groove, in which the inside lining layer is arranged. Massage protrusions are arranged on the surface of the outer wrapping layer in a staggered mode. The shape of the inside lining layer is a hollow cylinder with two ends opened. The wall thickness of the inside lining layer is the same as the depth of the groove. The hollow foam roller has following beneficial effects: the hollow foam roller is low in cost, few in procedures, short in manufacture period, and reasonable in machining method; without utilization of glue, the purpose of saving energy and protecting environment is fulfilled; and the produced foam roller has advantages of non-splicing surface material, uniform hardness, high strength of a pattern surface, no crack, bright and colorful external appearance of a product, high rate of resilience, durability 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

Images