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A kind of bicycle cushion and its molding process

A molding process, bicycle technology, applied in bicycle accessories, bicycle saddles, transportation and packaging, etc., can solve the problems of insufficient rider comfort, uneven force on the seat cushion, and reduced elasticity of the seat cushion, etc. Good durability, increased softness, and improved tensile strength

Active Publication Date: 2021-08-31
WENLING DONGFANGHONG CYCLE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] When the ETPU material is applied to the bicycle seat cushion, the elasticity of the seat cushion will decrease and the hardness will increase due to the long-term contact and friction between the buttocks and the seat cushion during riding. Insufficient comfort when riding

Method used

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  • A kind of bicycle cushion and its molding process
  • A kind of bicycle cushion and its molding process
  • A kind of bicycle cushion and its molding process

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-3

[0043] In the preparation example 1-3, the starch of canna taro was selected from the product number of 2019 sold by Guangxi Tianlin Rongan Agricultural Development Co., Ltd., and the gelatin was selected from the gelatin and polyvinyl alcohol of the product number of T6325 sold by Henan Guanqi Biotechnology Co., Ltd. The polyvinyl alcohol with the brand name PVA2699 sold by Shanghai Yingjia Industrial Development Co., Ltd. and the silicon dioxide are selected from the silicon dioxide and diatom mud with the product number T-1 sold by Tongqi Chemical (Shanghai) Co., Ltd., and the diatom mud is selected from Dongguan Diatom mud sold by Jinpai Industry and Trade Co., Ltd. is JP0010.

preparation example 1

[0044] Preparation example 1: Mix 0.8kg canna starch, 0.8kg gelatin and 0.3kg boric acid, add 1.2kg polyvinyl alcohol, and continuously feed formaldehyde gas, seal and stir for 2 hours, take it out, add 0.6kg silicon dioxide and 0.3kg Diatom mud is mixed and stirred evenly to prepare modified polyvinyl alcohol, the degree of polymerization of polyvinyl alcohol is 2550, and the degree of alcoholysis is 99%.

preparation example 2

[0045] Preparation example 2: Mix 1.3kg canna starch, 1.2kg gelatin and 0.5kg boric acid, add 2.3kg polyvinyl alcohol, and continuously feed formaldehyde gas, seal and stir for 3 hours, take it out, add 0.9kg silicon dioxide and 0.4kg silicon dioxide The algae mud is mixed evenly to prepare modified polyvinyl alcohol, the degree of polymerization of the polyvinyl alcohol is 2600, and the degree of alcoholysis is 99%.

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Abstract

The invention discloses a bicycle seat cushion and a forming process thereof. The molding process of the bicycle seat cushion includes the following steps: S1. Prepare the mold: prepare the upper and lower molds of the bicycle seat cushion; S2. Molding and extrusion: inject the raw materials of the bicycle seat cushion into the mixer, knead it into a molten material, and extrude Granulating to obtain granules; S3, mold closing: after the granules are melted in step S1, inject them into the cushion cavity formed by injection molding upper mold and lower mold. After the injection is completed, inject steam into the cushion cavity, and the mold closing time is 6-6. 10min; S4. Cooling and demoulding: After the bicycle seat is solidified, cool down, open the mold, and take out the bicycle seat. The bicycle seat cushion of the invention has the advantages of long-lasting elasticity, good wear resistance and durability, comfortable hardness, environmental protection, antibacterial and stuffy heat resistance.

Description

technical field [0001] The invention relates to the technical field of bicycle accessories, more specifically, it relates to a bicycle seat cushion and its forming process. Background technique [0002] The seat cushion of a bicycle is the part that has the most contact with the human body during riding, and it is also the part that mainly bears the weight of the human body. The design of the bicycle seat cushion directly affects the comfort of people during riding. [0003] Most of the existing bicycle seat cushions are usually made of an inner layer made of elastic material and wrapped with an outer skin and sewed. The elastic material is foam plastic or sponge material, and the outer skin is leather or plastic material. The inner layer and the outer skin generally need to be repaired. Separate production, and finally manually assembled and stitched, the production process is more cumbersome, the production cost is higher, and because the outer skin is thin, the outer skin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08L29/04C08L67/02C08L3/02C08L89/00C08L23/12C08K13/06C08K3/36C08K7/26C08K3/34C08K9/04C08K3/22C08K7/20C08K3/28C08K5/14C08K7/18C08J9/08B29C45/73B29C33/04B29B9/06B62J1/26
CPCB29B9/06B29C45/7337B62J1/26C08J9/0023C08J9/0061C08J9/0066C08J9/009C08J9/0095C08J9/08C08J9/103C08J9/30C08J2203/02C08J2203/04C08J2375/04C08J2403/02C08J2423/12C08J2429/04C08J2467/02C08J2489/00C08K3/28C08K3/34C08K3/36C08K5/14C08K7/18C08K7/20C08K7/26C08K9/04C08K13/06C08K2003/2241C08K2201/011
Inventor 朱巧敏
Owner WENLING DONGFANGHONG CYCLE PARTS
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