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Polyester slices for manufacturing vacuum blood collection tube and preparation method of polyester slices

A technology of vacuum blood collection tubes and polyester chips, applied in the field of polyester chips, can solve the problems of high material consumption, ordinary bottle-level chips are not suitable for blood collection tubes, etc. Effect

Inactive Publication Date: 2014-09-03
CHINA RESOURCES PACKAGING MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Third, due to high requirements on fluidity; fourth, due to the thin wall thickness of the product, it is necessary to stop and clean the mold every 4 hours during normal production, resulting in relatively large material consumption
In view of the above factors, the common bottle-grade slices of various brands widely used at present are not suitable for the blood collection tube market

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0030] (1), stearate is mixed with ethylene glycol, and the mixed solution that is deployed as stearate concentration is 1%wt; Stearate is sodium stearate;

[0031] (2), esterification reaction:

[0032] After mixing terephthalic acid (PTA), ethylene glycol (EG), antimony acetate, and toner into slurry, it enters the esterification tank. The esterification reaction temperature is 250-280°C, and the reaction pressure is 0.3 Mpa. The time is 2.5 hours; the weight ratio of terephthalic acid and ethylene glycol is 4:1; the amount of antimony acetate added is 550ppm in the weight content of the finished polyester chip; the toner is composed of a redness agent and a blueness agent. The redness agent addition is 0.4ppm by weight in the finished polyester, and the blueness agent addition is 0.6ppm by weight in the finished polyester;

[0033] (3), polycondensation reaction:

[0034] After adding polyphosphoric acid and the mixed solution prepared in step (1) to the esterified produc...

example 2

[0038] (1), stearate is mixed with ethylene glycol, is deployed as the mixed solution that stearate concentration is 1%wt; Stearate is potassium stearate;

[0039] (2), esterification reaction:

[0040] After mixing terephthalic acid (PTA), ethylene glycol (EG), antimony acetate, and toner into slurry, it enters the esterification tank. The esterification reaction temperature is 250-280°C, and the reaction pressure is 0.3 Mpa. The time is 2.5 hours; the weight ratio of terephthalic acid and ethylene glycol is 4:1; the amount of antimony acetate added is 550ppm in the weight content of the finished polyester chip; the toner is composed of a redness agent and a blueness agent. The redness agent addition is 0.4ppm by weight in the finished polyester, and the blueness agent addition is 0.6ppm by weight in the finished polyester;

[0041] (3), polycondensation reaction:

[0042]After adding polyphosphoric acid and the mixed solution prepared in step (1) to the esterified product ...

example 3

[0046] (1), stearate is mixed with ethylene glycol, is deployed as the mixed solution that stearate concentration is 1%wt; Stearate is ammonium stearate;

[0047] (2), esterification reaction:

[0048] After mixing terephthalic acid (PTA), ethylene glycol (EG), antimony acetate, and toner into slurry, it enters the esterification tank. The esterification reaction temperature is 250-280°C, and the reaction pressure is 0.3 Mpa. The time is 2.5 hours; the weight ratio of terephthalic acid and ethylene glycol is 4:1; the amount of antimony acetate added is 550ppm in the weight content of the finished polyester chip; the toner is composed of a redness agent and a blueness agent. The redness agent addition is 0.4ppm by weight in the finished polyester, and the blueness agent addition is 0.6ppm by weight in the finished polyester;

[0049] (3), polycondensation reaction:

[0050] After adding polyphosphoric acid and the mixed solution prepared in step (1) to the esterified product ...

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Abstract

The invention relates to polyester slices for manufacturing a vacuum blood collection tube. The polyester slices are characterized by containing stearate and polyethylene wax, wherein stearate is selected from sodium stearate, potassium stearate, ammonium stearate or zinc stearate; the weight percent of stearate in the polyester slices is 0.1%-5%; the weight percent of the polyethylene wax in the polyester slices is 0.1%-1%, and the number-average molecular weight of the polyethylene wax is 500-10,000. The invention further relates to a preparation method of the polyester slices for manufacturing the vacuum blood collection tube. The polyester slices have the advantages of high flowability, high stability and quickness in demoulding.

Description

technical field [0001] The present invention relates to a polyester chip, in particular to a polyester chip for making vacuum blood collection tubes and a preparation method thereof. Background technique [0002] Polyester is a general term for thermoplastic linear saturated polyester represented by polyethylene terephthalate (PET). One of its important uses is in the field of food packaging. As a food packaging material, PET can be made into biaxially stretched packaging film, and can also be made into amorphous preforms and then blown to obtain high-strength, high-transparency stretch blow-molded bottles, and can also be directly extruded into sheets The material is then thermoformed to produce a hollow container. PET products are transparent, oil-resistant, fragrant, hygienic and reliable, and have a wide range of operating temperatures, so their usage in the packaging field continues to grow. [0003] Since the invention of vacuum blood collection tubes in 1937, the pr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): C08L67/02C08L23/06C08K5/098C08G63/183C08G63/80
CPCY02P20/52
Inventor 朱振达宗建平陈小雷
Owner CHINA RESOURCES PACKAGING MATERIALS CO LTD
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