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High-pressure-tolerant slow-leakage-rate gasket material for beer bottle cap and preparation method of material

An air leakage rate and bottle cap technology, applied in the field of food packaging materials, can solve the problems of undiscussed related properties, migration, and limited compatibility, and achieve the effects of low chronic air leakage rate, easy control, and high pressure resistance.

Inactive Publication Date: 2013-04-03
JIANGSU TOP POLYMER ENTERPRISE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented new type rubber-based sealant can withstand very strong pressures without losing its effectiveness over time due to leaks or damage from external factors such as rainwater or snow falling during use. It also does this effectively at room temperature while maintaining good barrier properties against gaseous substances like oxygen (O2).

Problems solved by technology

The technical problem addressed in this patents relating to improving the quality control standards required during production of beverages like Beijing’s brand name drinks or other products made up mostly of synthetic rubber was how to develop new types of environmentlyfriendly materials called thermal plasma resin (TPR), specifically those containing less than 1000 ppm polytetrafluoroethylenegranate (PTFE). These materials could potentially substitute traditional methods involving tin plate closings while still meeting strict regulations set forth in various international guidelines.

Method used

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  • High-pressure-tolerant slow-leakage-rate gasket material for beer bottle cap and preparation method of material
  • High-pressure-tolerant slow-leakage-rate gasket material for beer bottle cap and preparation method of material
  • High-pressure-tolerant slow-leakage-rate gasket material for beer bottle cap and preparation method of material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Gasket material with high pressure resistance and low chronic air leakage rate for beer bottle caps, its raw material composition and parts by weight are as follows:

[0031]

[0032] The preparation method of above-mentioned pad material, comprises the steps:

[0033] ① Add the SBS raw material to the high-speed batch mixer, add LDPE, HIPS and EBS at the same time, mix and stir for 5 minutes to obtain the premix;

[0034] ②Place the mixed premixed material in a parallel co-rotating twin-screw extruder to melt and extrude it, and then granulate it.

[0035] The parallel co-rotating twin-screw extruder has seven temperature control zones, among which, the temperature of the first zone is 150°C, the temperature of the second zone is 170°C, the temperature of the third zone is 185°C, the temperature of the fourth zone is 185°C, the temperature of the fifth zone is 185°C, and the temperature of the sixth zone is 185°C. The zone temperature is 185°C, the seventh zone tem...

Embodiment 2

[0038] Gasket material with high pressure resistance and low chronic air leakage rate for beer bottle caps, its raw material composition and parts by weight are as follows:

[0039]

[0040]

[0041] The preparation method of above-mentioned pad material, comprises the steps:

[0042] ① Add the SBS raw material to the high-speed batch mixer, add LDPE, HIPS and EBS at the same time, mix and stir for 5 minutes to obtain the premix;

[0043] ②Place the mixed premixed material in a parallel co-rotating twin-screw extruder to melt and extrude it, and then granulate it.

[0044] The parallel co-rotating twin-screw extruder has seven temperature control zones, among which, the temperature in the first zone is 155°C, the temperature in the second zone is 175°C, the temperature in the third zone is 190°C, the temperature in the fourth zone is 190°C, the temperature in the fifth zone is 190°C, and the temperature in the sixth zone is 190°C. The zone temperature is 190°C, the seve...

Embodiment 3

[0047] Gasket material with high pressure resistance and low chronic air leakage rate for beer bottle caps, its raw material composition and parts by weight are as follows:

[0048]

[0049] The preparation method of above-mentioned pad material, comprises the steps:

[0050] ① Add the SBS raw material to the high-speed batching mixer, add LDPE, HIPS and EBS at the same time, mix and stir for 10 minutes to obtain the premix;

[0051] ②Place the mixed premixed material in a parallel co-rotating twin-screw extruder to melt and extrude it, and then granulate it.

[0052] The parallel co-rotating twin-screw extruder has seven temperature control zones, among which, the temperature in the first zone is 155°C, the temperature in the second zone is 175°C, the temperature in the third zone is 190°C, the temperature in the fourth zone is 190°C, the temperature in the fifth zone is 190°C, and the temperature in the sixth zone is 190°C. The zone temperature is 190°C, the seventh zone...

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Abstract

The invention discloses a high-pressure-tolerant slow-leakage-rate gasket material for a beer bottle cap and a preparation method of the material. The gasket material is prepared by the step of carrying out blending and melt-extrusion on 40-70 parts of low-density polyethylene, 20-40 parts of styrene-butadiene-styrene triblock copolymers, 10-20 parts of high impact polystyrene and 0.1-1 part of lubricating agent according to parts by weight. A gasket prepared by the gasket material provided by the invention has the characteristics of high pressure proof, slow leakage rate and environmental friendliness and is accordant with performance requirements of European Union environmental protection standards and government standards on the gasket. According to the preparation method of the gasket material provided by the invention, the process is simple and easy to control, the requirement on a facility is low, all used facilities are universal polymer process facilities, the investment is not high, and the popularization and application are easy.

Description

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Claims

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Application Information

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Owner JIANGSU TOP POLYMER ENTERPRISE
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