A kind of preparation method of wolf tooth yoga column

A wolf tooth yoga and raw material technology, which is applied in the field of rubber and plastic products, can solve the problems of large differences in hardness of the surface pattern of finished products, shorten the service life of yoga columns, and low utilization rate of raw materials, etc., and achieve short production cycle, low cost and high utilization rate Effect

Active Publication Date: 2018-02-13
ZHANGJIAGANG HONGLI RUBBER & PLASTIC PROD
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  • Abstract
  • Description
  • Claims
  • Application Information

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 yoga columns are ideal auxiliary tools commonly used by yoga practitioners. Most of the yoga columns currently on the market use surface layers. It is a product of EVA material with patterns and a plastic hard tube inside that is cut, glued, and molded. It is referred to as a molded yoga column. It takes 15 days for the production cycle to reach the product. There are many processes and a long production cycle. 2. The utilization rate of raw materials is low: when the EVA original board is processed, the utilization rate of the original board can only reach about 70% through peeling, edge removal, and chamfering; 3. Although the glue that can meet the requirements of environmental protection is used, it only shows that the toxicity of the glue is currently within an acceptable range, and it is not 100% environmentally friendly; 4. The strength of the glue seam of EVA material will be lower than that of other parts. It will shorten the service life of the yoga column; 5. The hardness of the surface pattern of the molded finished product varies greatly; since the surface blank of the yoga column is made of EVA foam with the same thickness, it will be processed in the shaping mold with the pattern The pressure on the different depths of the pattern is also different, so the surface hardness of the product is also different (hard on the outside and soft on the inside, with a difference of 8-10 degrees), so a yoga column with better quality, more environmentally friendly and durable is needed

Method used

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  • A kind of preparation method of wolf tooth yoga column
  • A kind of preparation method of wolf tooth yoga column
  • A kind of preparation method of wolf tooth yoga column

Examples

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Effect test

Embodiment 1

[0037] A kind of preparation method of wolf tooth yoga column described in the present embodiment, comprises the following steps:

[0038] (1) Prepare raw materials: the mass components are: ethylene-vinyl acetate copolymer: 85 parts, sodium bicarbonate: 12 parts, modified sepiolite: 13 parts, 2-mercaptobenzothiazole: 4 parts, Borax: 7 parts, sulfur: 1 part, N-isopropyl-N'-phenyl-p-phenylenediamine: 2 parts, pigment: 4 parts;

[0039] (2) The preheating temperature of the internal mixer is 75°C, put the raw materials into the internal mixer for 22 minutes, the internal mixing temperature is 115°C, and the pressure is 7KG / M 2 Stir the raw material evenly, melt and discharge the material under the condition that the internal mixer rotating speed is 55rpm;

[0040] (3) Put the raw materials after step (2) into a screw extruder at a temperature of 112°C for plasticization, extrude, and air-cool and pelletize through a die to obtain mixture particles, the particle size of which is...

Embodiment 2

[0049] A kind of preparation method of wolf tooth yoga column described in the present embodiment, comprises the following steps:

[0050] (1) Prepare raw materials: the mass components are: ethylene-vinyl acetate copolymer: 80 parts, azodicarbonamide: 15 parts, nanostructured white carbon black: 10 parts, tetramethylthiuram disulfide: 5 parts Parts, stearic acid: 5 parts, sulfur monochloride: 2 parts, tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester: 1 part, pigment: 5 parts ;

[0051] (2) The preheating temperature of the internal mixer is 70°C, put the raw materials into the internal mixer for 30 minutes, the internal mixing temperature is 110°C, and the pressure is 8KG / M 2 Under the condition that raw material is stirred evenly, melts and discharges, the internal mixer rotating speed is 50rpm;

[0052] (3) Put the raw materials after step (2) into a screw extruder at a temperature of 115°C to plasticize, extrude, and air-cool and pelletize...

Embodiment 3

[0061] A kind of preparation method of wolf tooth yoga column described in the present embodiment, comprises the following steps:

[0062] (1) Preparation of raw materials: its mass components are: ethylene-vinyl acetate copolymer: 95 parts, N,N′-dinitrosopentamethylenetetramine: 8 parts, modified kaolin: 15 parts, dibutyl Zinc dithiocarbamate: 2 parts, magnesium oxide: 10 parts, ethyl carbamate: 1 part, N-isopropyl-N'-phenyl-p-phenylenediamine: 2 parts, pigment: 3 parts;

[0063] (2) The preheating temperature of the internal mixer is 80°C, put the raw materials into the internal mixer for 15 minutes, the internal mixing temperature is 120°C, and the pressure is 5KG / M 2 Stir the raw materials evenly, melt and discharge the raw materials under certain conditions, and the mixer speed is 60rpm;

[0064] (3) Put the raw materials after step (2) into a screw extruder at a temperature of 110°C to plasticize, extrude, and air-cool and pelletize through a die to obtain mixture granu...

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Abstract

The invention discloses a preparation method for a wolf tooth Yoga pillar. The preparation method comprises: preparing raw materials; mixing the raw materials in a mixer; plastifying and extruding the raw materials in a screw extruder; carrying out air cooling grain-sized dicing at a die opening to obtain mixed material particles; keeping the temperature of the mixed material particles; injecting the mixed material particles to a moulding die with a wolf tooth pattern through an injection foaming machine; carrying out high-temperature and high-pressure operations to obtain an outer pack layer; quickly filling a plastic pipe in a groove of the outer pack layer; and carrying out air-cooling and contracting the outer pack layer to be wrapped at the periphery of the plastic pipe to form the wolf tooth Yoga pillar. The preparation method disclosed by the invention is low in cost, few in step, short in manufacturing period, free of glue and highly environmental-friendly; the produced Yoga pillar is free of splicing of surface materials, uniform in hardness and high in surface strength of pattern. The product is bright in appearance, bright in color, small in deformation, high in rate of resilience and durable.

Description

technical field [0001] The invention belongs to the technical field of rubber and plastic products, and in particular relates to a preparation method of a wolf tooth yoga column. Background technique [0002] Now that people's living standards continue to improve, they pay more attention to their health. Yoga is the preferred item for physical fitness, and yoga columns are ideal auxiliary tools commonly used by yoga practitioners. Most of the yoga columns currently on the market use surface layers. It is a product of EVA material with patterns and a plastic hard tube inside that is cut, glued, and molded. It is referred to as a molded yoga column. It takes 15 days for the production cycle to reach the product. There are many processes and a long production cycle. 2. The utilization rate of raw materials is low: when the EVA original board is processed, the utilization rate of the original board can only reach about 70% through peeling, edge removal, and chamfering; 3. Altho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08J9/08C08J9/10C08K13/02C08K3/34C08K5/47C08K3/38C08K3/06C08K5/18C08K3/36C08K5/40C08K5/09C08K3/30C08K5/103C08K5/39C08K3/22C08K5/205
CPCC08K3/06C08K3/22C08K3/30C08K3/34C08K3/346C08K3/36C08K3/38C08K5/09C08K5/103C08K5/18C08K5/205C08K5/39C08K5/40C08K5/47C08K13/02C08K2003/222C08L23/0853
Inventor 章炳芳
Owner ZHANGJIAGANG HONGLI RUBBER & PLASTIC PROD
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