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Hydrophobic material for insulin syringe and processing and forming method of material

A hydrophobic material and syringe technology, applied in the field of medical materials, can solve the problems of raw material waste, increased workload and cost, and achieve the effects of saving raw materials, improving automation, and increasing strength

Active Publication Date: 2021-06-15
PROMISEMED HANGZHOU MEDITECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Injection molding is a method of producing industrial products. At present, when producing needle seats, protective sleeves, core rods and outer jackets of syringes, cold runner injection molding processes are usually used, and a large amount of syringes are processed by cold runner injection molding processes. waste, resulting in waste of raw materials, and after injection molding, robots or workers are required to separate the injection molded parts from the flow channel, which increases the workload and cost

Method used

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  • Hydrophobic material for insulin syringe and processing and forming method of material
  • Hydrophobic material for insulin syringe and processing and forming method of material
  • Hydrophobic material for insulin syringe and processing and forming method of material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Embodiment 1: A kind of processing molding method of insulin syringe:

[0080] This embodiment provides a method for processing and molding hydrophobic materials for insulin syringes, including:

[0081] 1) Preparation of p-hydroxybenzoic acid modified starch:

[0082] 20kg of p-hydroxybenzoic acid was dissolved in 4L of distilled water to form a hydroxybenzoic acid solution, and the pH of the solution was adjusted to 3.5 with 1mol / L sodium hydroxide solution; 40kg of cornstarch (molecular weight 80000) was added to the p-hydroxybenzoic acid solution , ultrasonic (frequency is 20kW, power density is 0.3W / cm 2 ) for 40 minutes, left standing at room temperature for 14 hours, and then dried in a 60°C oven for 5 hours until the solid content was greater than 90%; then the product was ball milled for 20 minutes at a ball milling rate of 300r / min, and reacted at 130°C for 8 hours. The product was washed with deionized water to remove unreacted p-hydroxybenzoic acid, and dr...

Embodiment 2

[0095] Example 2: Another processing method for insulin syringes:

[0096]This example provides another method for processing and molding hydrophobic materials for insulin syringes. Its components and preparation methods are basically the same as in Example 1, except that in this example, in the process of preparing p-hydroxybenzoic acid modified starch , the addition amount of cornstarch and p-hydroxybenzoic acid were 40kg and 16kg respectively, and the degree of esterification of p-hydroxybenzoic acid modified starch was 0.08.

Embodiment 3

[0097] Example 3: Another processing method for insulin syringes:

[0098] This example provides another method for processing and molding hydrophobic materials for insulin syringes. Its components and preparation methods are basically the same as in Example 1, except that in this example, in the process of preparing p-hydroxybenzoic acid modified starch , the addition amount of cornstarch and p-hydroxybenzoic acid were 40kg and 24kg respectively, and the degree of esterification of p-hydroxybenzoic acid modified starch was 0.12.

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Abstract

The invention belongs to the technical field of medical materials, and discloses a hydrophobic material for an insulin syringe and a processing and forming method of the material. Polylactic acid is used as a main body material, p-hydroxybenzoic acid modified starch, stearic acid modified magnesium oxide, a potassium titanate whisker compound and auxiliaries are added, and the insulin syringe is prepared by adopting a hot runner injection molding process. The process steps are simple and convenient to implement, the production period is short, the automation degree is improved, and the preparedsyringe is high in transparency, capable of being completely degraded, high in degradation rate and excellent in mechanical property, heat resistance and aging resistance.

Description

technical field [0001] The method belongs to the technical field of medical materials, and specifically relates to a hydrophobic material for an insulin syringe and a processing and molding method thereof. Background technique [0002] With the advancement of medical technology, medical operations are becoming more and more stringent, and injections are the basis of medical procedures, and most medical procedures require injections. At present, the syringe materials are mainly polypropylene, polyvinyl chloride, etc., which are low in cost and high in transparency. However, the toughness of polypropylene material is poor, especially at low temperature, which greatly limits the further application of polypropylene; PVC material itself is relatively hard, so it needs to add a large amount of plasticizer and other additives to make it It becomes soft and elastic, but when the infusion device made of modified polyvinyl chloride plastic comes into contact with the liquid medicine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L3/06C08K9/10C08K9/04C08K3/22C08K7/08
CPCC08L67/04C08L2201/10C08L2201/06C08L2201/08C08K2003/222C08K2201/011C08L3/06C08K9/10C08K9/04C08K3/22C08K7/08
Inventor 胡超宇鲁艳石家涵
Owner PROMISEMED HANGZHOU MEDITECH
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