Foam pad and production method thereof

A technology of foam pad and base layer, which is applied in the high security field and can solve the problems such as the need to be further improved in sealing performance.

Active Publication Date: 2017-01-11
JIANGSU JINHOU NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] But, existing bottle cap gasket, its tightness still needs to be improved further

Method used

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  • Foam pad and production method thereof
  • Foam pad and production method thereof
  • Foam pad and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] A foam pad, the foam pad includes a base layer and a film layer covering the upper surface and the lower surface of the base layer, the base layer is a foam, and is a uniform pore-like body, the average diameter of the pores is is 1-30 μm; the film layer is a coating layer, and the film layer is uniform and dense; the thickness of the base layer is 0.5mm; the thickness of the film layer is 0.02mm;

[0070] The base layer is mainly prepared from the following raw materials in terms of mass percentage:

[0071]

[0072] The release agent is selected from oleic acid amide;

[0073] The nucleating agent is selected from masterbatches with sodium bicarbonate and citric acid as the main active ingredients and PE, PP or EVA as the carrier.

[0074] The film layer is mainly prepared from the following raw materials according to the mass percentage:

[0075]

[0076] The tackifier is selected from EEA (ethylene ethyl acrylate).

[0077] The release agent is selected fro...

Embodiment 2

[0083] A foam pad, the foam pad includes a base layer and a film layer covering the upper surface and the lower surface of the base layer, the base layer is a foam, and is a uniform pore-like body, the average diameter of the pores is 50-100 μm; the film layer is a coating layer, and the film layer is uniform and dense; the thickness of the base layer is 10.0mm; the thickness of the film layer is 0.15mm;

[0084] The base layer is mainly prepared from the following raw materials in terms of mass percentage:

[0085]

[0086] The release agent is selected from oleamide and erucamide.

[0087] Preferably, the nucleating agent is selected from masterbatches with sodium bicarbonate and citric acid as the main active ingredients and PE, PP or EVA as the carrier.

[0088] The film layer is mainly prepared from the following raw materials according to the mass percentage:

[0089]

[0090]

[0091] The tackifier is selected from EEA and polyester.

[0092] The mold releas...

Embodiment 3

[0098] A foam pad, the foam pad includes a base layer and a film layer covering the upper surface and the lower surface of the base layer, the base layer is a foam, and is a uniform pore-like body, the average diameter of the pores is 30-80 μm; the film layer is a coating layer, and the film layer is uniform and dense; the thickness of the base layer is 5.0mm; the thickness of the film layer is 0.10mm;

[0099] The base layer is mainly prepared from the following raw materials in terms of mass percentage:

[0100]

[0101]

[0102] The release agent is selected from erucamide.

[0103] Preferably, the nucleating agent is selected from masterbatches with sodium bicarbonate and citric acid as the main active ingredients and PE, PP or EVA as the carrier.

[0104] The film layer is mainly prepared from the following raw materials according to the mass percentage:

[0105]

[0106] The tackifier is selected from maleic anhydride grafted resins.

[0107] The mold release...

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Abstract

The invention provides a foam pad and the production method thereof. The foam pad comprises the base layer and the upper surface film and lower surface film covering the base layer. The base layer is the foam body, which is also the averagely distributed capillary pores, wherein the average diameter of the capillary pore is 1-100 micrometers; the film layer is evenly distributed with high density; the preparation method of the foam pad comprises the super-critical foaming process and the filming process. The foam pad has the advantages of excellent elasticity and softness and can be used as the plastic film for food. As the bottle cap gasket, the foam pad has excellent airtight features. The production method is also simple and can be easily industrialized.

Description

technical field [0001] The invention belongs to the technical field of high safety fields such as food packaging and pharmaceutical packaging, and relates to a foam pad and a preparation method thereof, in particular to a sealing gasket for bottle caps and a preparation method thereof. Background technique [0002] The bottle cap gasket is a material that uses rubber skin, copper sheet or paper to be placed between two planes to strengthen the seal, and has the effect of preventing fluid leakage. With the continuous development of the economy, bottle cap gaskets are widely used in wine, food, cosmetics, pharmaceuticals and other industries. [0003] According to relevant news reports, at present, the demand for bottle cap gaskets in wine packaging and beverage packaging in my country is increasing day by day, and the bottle cap gaskets used in wine packaging account for more than 70% of the total bottle cap gasket usage. With the rapid development of my country's wine and b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L23/08C08L53/02C08L67/00C08L51/00C08K13/02C08K5/20C08K3/26C08K5/092B32B27/08B32B27/32
CPCB32B27/06B32B27/08B32B27/32C08L23/06C08L23/0815C08L23/12C08L2203/14C08L2203/16C08L2205/02C08L2205/035C08L23/0853C08K5/20C08K3/26C08K5/092C08L23/0869C08L53/02C08K13/02C08L67/00C08L53/025C08L51/00B29C44/06B29C44/24B29C44/50B29C44/505B29K2023/06B29K2023/12B29L2031/265B32B5/18B32B27/065B32B2250/40B32B2266/0207B32B2266/025B32B2266/102B32B2266/106B32B2307/546B32B2307/72B32B2307/732B32B2435/02B65D41/0435B32B2250/242B32B2266/104
Inventor 王衍萍
Owner JIANGSU JINHOU NEW MATERIAL TECH CO LTD
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