Sealing combined cover gasket capable of being used for puncture sampling and preparation method thereof

A sealing gasket and cover gasket technology, which is applied in the field of medical and scientific chromatographic analysis consumables, can solve problems such as easy residue of adhesive, unstable connection between gasket and sealing cover, difficulty in needle penetration, etc., to achieve excellent sealing, Enhance the clamping force and increase the number of turns of the internal thread

Pending Publication Date: 2021-05-07
ZHEJIANG AIJIREN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is the technical defects in the prior art that the connection between the gasket and the sealing cap is unstable, the needle penetration is difficult, and the adhesive of the organic solvent is easy to remain. The invention and the preparation method thereof can improve the cleanliness of the sealing combined lid gasket, ensure the stability of the lid body, the sealing gasket and the sealed container, improve the production efficiency of the sealing combined lid gasket, and ensure the puncture performance at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In Example 1, a large-diameter sealed composite cover gasket with an outer diameter of 26.9 mm includes a cover body and a sealing gasket located at the inner bottom of the cover body, wherein: the material of the cover body is polypropylene, and the bottom of the cover body is flat without reinforcing ribs. There is no card slot, the center of the cover body is provided with a cap hole with a diameter of 14.9mm, and the periphery of the cap hole at the inner bottom of the cover body forms an annular surface, and the cover body is provided with an internal thread extending to the bottom of the cover body; The material of the gasket is silicone rubber with a hardness of 40 degrees, and the trapezoidal lower bottom of the 3 mm thick sealing gasket is a 0.1 mm thick polytetrafluoroethylene film; the trapezoidal upper bottom of the sealing gasket is bonded to the annular surface of the inner bottom of the cover body.

[0037] The main process equipment for preparing the seal...

Embodiment 2

[0048] A large-caliber sealed combined cover gasket with an outer diameter of 26.9 mm in this embodiment 2, including a cover body and a sealing gasket located at the inner bottom of the cover body, wherein: the material of the cover body is polycarbonate, and the bottom of the cover body is flat and without reinforcement Ribs, no card slots, a cap hole with a diameter of 14.9 mm is provided in the center of the cap body, and the cap hole at the inner bottom of the cap body forms an annular surface, and the cap body is provided with an internal thread extending to the bottom of the cap body; the sealing gasket is trapezoidal , the sealing gasket is made of silicone rubber with a hardness of 45 degrees, and the trapezoidal lower bottom of the 3 mm thick sealing gasket is 0.1 mm thick polyfluoroethylene propylene film; the trapezoidal upper bottom of the sealing gasket is bonded to the annular ring at the bottom of the cover face.

[0049] The main process equipment for preparin...

Embodiment 3

[0060] In Example 3, a small sealing combined cover gasket with a diameter of 11.5 mm includes a cover body and a sealing gasket located at the inner bottom of the cover body, wherein: the material of the cover body is polypropylene, and the bottom of the cover body is flat, without reinforcing ribs, and without slots , the center of the cover body is provided with a cap hole with a diameter of 5.6 mm, and the periphery of the cap hole at the inner bottom of the cover body forms an annular surface, and an internal thread extending to the bottom of the cover body is provided in the cover body; It is silicone rubber with a hardness of 50 degrees, and the trapezoidal lower bottom of the 1 mm thick sealing gasket is a 0.1 mm thick polytetrafluoroethylene film; the trapezoidal upper bottom of the sealing gasket is bonded to the annular surface of the inner bottom of the cover body.

[0061] The main process equipment for preparing the sealing composite cover gasket in the above-ment...

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Abstract

The invention discloses a sealing combined cover gasket capable of being used for puncture sampling. The sealing combined cover gasket capable of being used for puncture sampling comprises a cover body and a sealing gasket, wherein the bottom of the cover body is flat; a cap hole is formed in the center of the cover body; an annular face is formed on the periphery of the cap hole; and the sealing gasket is trapezoidal. A method for preparing the sealing combined cover gasket comprises the following steps of: (1) carrying out surface treatment: carrying out ultraviolet light irradiation treatment on the annular surface of the inner bottom of the cover body and an annular area, corresponding to the annular surface of the inner bottom of the cover body, on the upper bottom of the sealing gasket; (2) gluing: gluing on a middle annular line of the annular surface of the inner bottom of the cover body; (3) assembling and holding pressure: assembling the trapezoidal upper bottom surface of the sealing gasket towards the inner bottom of the cover body, and continuously jacking the sealing gasket; and (4) standing: standing and sealing the combined cover gasket at normal temperature, normal pressure and normal humidity. The sealing combined cover gasket prepared through the method provided by the invention is high in cleanliness and good in sealing performance and stability, the sealing gasket can be prevented from falling off during puncture sampling, automatic production can be achieved through the preparation method, the preparation process is simple and convenient, and the production efficiency is high.

Description

technical field [0001] The invention relates to the technical field of medical and scientific chromatographic analysis consumables, in particular to a sealing combination cover gasket which can be used for puncture sampling and a preparation method thereof. Background technique [0002] In the field of medical and scientific chromatographic analysis, sample bottles are widely used as airtight containers. Sample bottles are generally sealed with a sealing cap, and a cap hole is usually provided in the sealing cap. The cap hole is sealed by a gasket, and the cap hole prevents the sample While contaminated or lost, the needle is allowed to pass through the spacer for sample insertion or withdrawal. [0003] In the application of conventional medical injections and pharmaceutical oral liquids, the content in the bottle is often a substance that can be accepted and absorbed by the human body. Its corrosiveness and chemical activity are low, and it can be in direct contact with th...

Claims

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Application Information

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IPC IPC(8): B65D53/00B65D41/62G01N1/10
CPCB65D53/00B65D41/62G01N1/10
Inventor 缪翔
Owner ZHEJIANG AIJIREN TECH
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