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Preparation method for directly drained blow molded transfusion soft bag

A technology of infusion soft bags and straight row type, which is applied in the field of medical supplies, and can solve problems such as bag blanks not being filled, products that cannot be formed, and infusion soft bags with a low pass rate.

Active Publication Date: 2012-02-08
ANHUI FENGYUAN PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also problems that the bag blanks are not filled and the product cannot be formed when the bag blanks are prepared by injection molding. The qualified rate of the infusion soft bags made during blow molding is also low, generally 86%.

Method used

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  • Preparation method for directly drained blow molded transfusion soft bag
  • Preparation method for directly drained blow molded transfusion soft bag
  • Preparation method for directly drained blow molded transfusion soft bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The specification of inline blow molding infusion soft bag is: 100ml

[0022] Medical polypropylene particles are used as raw materials during the preparation of the straight row type blow-molded infusion soft bag. The preparation method is to prepare the bag blank by injection molding in an injection molding machine (the model of the injection molding machine is CJ380M3V) and put the bag blank into the blow molding machine (blowing machine). The plastic machine model is SUPRA-800MB10) and carry out two steps of bag blowing, each process parameter during preparation is as follows:

[0023] ① When preparing the bag blank by injection molding, the temperature of the main channel is controlled by the temperature controller to set the temperature at 210 ° C, and the temperature of the sub-runner is 320 ° C.

[0024] ②Relevant parameters of the injection molding machine are shown in Table 1

[0025] Table 1

[0026] Starting position(mm)

Pressure (Kpa)

s...

Embodiment 2

[0042] The difference from Example 1 is that the cylinder temperature is 180°C when the bag blank is injection molded, the blowing pressure is 1.6Mpa, the cooling water pressure is 0.2Mpa, and the cooling water temperature is 45°C.

[0043] According to statistics, the qualification rate of the inline infusion soft bag prepared by the method in this embodiment is 96%.

Embodiment 3

[0045] The difference from Example 1 is that the barrel temperature is 200°C when the bag blank is injection molded, the barrel temperature is 180°C when the bag blank is injection molded, the blowing pressure is 2.2Mpa when the bag is blown, the cooling water pressure is 0.5Mpa, and the cooling water pressure is 0.5Mpa. The water temperature is 50°C.

[0046] According to statistics, the pass rate of the inline infusion soft bag prepared by the method in this example is 98%.

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Abstract

The invention relates to a preparation method for a directly drained blow molded transfusion soft bag. The method comprises a bag blank injection molding step and a bag blowing step, wherein during bag blank injection molding, the temperature of a feed cylinder is 180-210 DEG C, the temperature of a main runner of a mould is 210 DEG C, the temperature of a sub-runner of the mould is 320 DEG C, the injection pressure is 25-50Kpa, and the injection speed is 45-55mm / s; pressure maintaining is performed in two sections; the pressure of a first pressure maintaining section is 30-35Kpa and the time is 2 seconds; the pressure of a second pressure maintaining section is 30Kpa and the time is 1 second; and during bag blowing, bag blowing pressure of a bag blowing machine is 1.6-2.2Mpa, pressure of cooling water is 0.2-0.5Mpa, and the temperature of the cooling water is 40-50 DGE C. When the method in the technical scheme is used for preparing a bag blank during injection molding, the bag blank can fill the mould; and the qualification rate of the prepared transfusion soft bag is also improved to over 96 percent.

Description

technical field [0001] The invention relates to the field of medical supplies, in particular to a method for preparing a straight-row blow-molded infusion soft bag. Background technique [0002] Soda-lime glass bottles and polypropylene infusion bottles are the most commonly used packaging containers for medical infusion in my country. Medical infusion bags are relatively seldom used at present, and the preparation technology of infusion soft bags is still relatively backward. Due to the lack of technology, the output is low, there are many scrapped products, and the quality and performance of the products are also seriously affected. [0003] CN101716124A discloses a seamless soft bag for infusion and a preparation method thereof. The soft bag is made of medical grade polypropylene or polyethylene material through two steps of injection molding and blow molding. The temperature of the barrel is 220-280°C and the pressure is 18-19Mpa when the bag is prepared by injection mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/06B29C49/78
Inventor 陈彬
Owner ANHUI FENGYUAN PHARM CO LTD
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