Degradable material used for disposable umbilical cord clamp and preparation method
A degradable material, disposable technology, applied in medical science, surgery, etc., can solve the hidden danger of disease cross-infection, damage to human health, pollute the environment and other problems, save electricity consumption, save input costs, and sterilization results are safe and effective. Effect
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[0030] Example 1 Injection molding method of degradable material for disposable umbilical cord clamp:
[0031] The first step, vacuum drying: the degradable substrate pellets of formula 1 or formula 2 were vacuum-dried at 55° C. for 3 hours, and then used.
[0032] The second step, injection molding: add the dried degradable substrate pellets of formula 1 or formula 2 into the hopper of the injection molding machine for injection molding.
[0033] The barrel temperature is set as: feed inlet 155°C, compression section 160°C, metering section 165°C, nozzle 175°C;
[0034] Mold temperature: 25°C;
[0035] The injection pressure is: 70 for the first grade, 80 for the second grade, and 55Mpa for the third grade;
[0036] Injection molding cycle: 42 seconds;
[0037] The holding time is: 0 seconds;
[0038] The screw speed is: 180 rpm.
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