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Packaging container

一种包装容器、热塑性材料的技术，应用在化学仪器和方法、合成树脂层状产品、分层产品等方向，能够解决能源浪费、原材料浪费等问题，达到颈缩现象减小、密封强度好、能源和原材料浪费现象抑制的效果

Inactive Publication Date: 2015-07-08
TAIZHOU ZHUYE MACHINERY SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All three solutions require the extruder die to be much wider than the width of the paper substrate and barrier layers, requiring more heat to heat and melt the thermoplastic material, wasting energy, and cutting off after lamination is complete Defects on both sides of packaging materials, resulting in waste of raw materials

Method used

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Examples

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Embodiment Construction

[0024] Such as figure 2 with image 3 As shown, a packaging container of the present invention includes an outermost layer 21 of a thermoplastic material, a core layer 22, an intermediate layer 23 of a thermoplastic material, a barrier layer 24, an adhesive layer 25 and an innermost layer 26 of a thermoplastic material in order from the outside to the inside.

[0025] The innermost layer 26 of the thermoplastic material contains linear low-density polyethylene (MLLDPE) and low-density polyethylene (LDPE) polymerized with a metallocene catalyst. The linear low-density polyethylene (mLLDPE) polymerized with a metallocene catalyst has the following parameters: average density 0.88g / cm 3 ~0.925 g / cm 3 , Melt flow index (190℃, 2.16kg) is 5 g / 10min~20 g / 10min, peak melting point is 85℃~130℃, expansion ratio is 1.2~1.8; low density polyethylene (LDPE) has the following parameters: The average density is 0.90g / cm 3 ~0.925 g / cm 3 , Melt flow index (190℃, 2.16kg) is 5 g / 10min~20 g / 10m...

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Abstract

The invention provides a packaging container which comprises an outmost thermoplastic material layer, a core layer, an intermediate thermoplastic material layer, a blocking layer and an innermost thermoplastic material layer from outside to inside. The innermost thermoplastic material layer contains metalloscene catalyst polymerized linear low density polyethylene (MLLDPE) and low density polyethylene (LDPE), the MLLDPE has following parameters: average density of 0.88g / cm3-0.925g / cm3, melt flow index (190 DEG C, 2.16kg) of 5g / 10min-20g / 10min, peak melting point of 85 DEG C-130 DEG C, and expansion ratio of 1.2-1.8, and the LDPE has following parameters: average density of 0.90g / cm3-0.925g / cm3, melt flow index (190 DEG C, 2.16kg) of 5g / 10min-20g / 10min, peak melting point of 85 DEG C-110 DEG C, and expansion ratio of 1.2-1.8. A longitudinal sealing portion can realize quick thermal sealing during the process of manufacturing the packaging container, sealing intensity is high, and the manufactured packaging container is high in pass percentage and long in shelf life of liquid food.

Description

[0001] The patent application of the present invention is a divisional application based on the patent application for a packaging container filed by the applicant for the first time. The filing date of the original application is December 31, 2012, and the application number is 2012105931392. technical field [0002] The invention relates to a packaging container, in particular to a packaging container used for packaging liquid food. Background technique [0003] At present, disposable disposable packaging containers for liquid food have shapes such as bricks, squares, triangles, octahedrons with hexagonal cross-sections, and pillows. Usually, the laminated packaging materials used to manufacture these packaging containers include sequential layers. The outermost layer of thermoplastic material, the core layer, the middle layer of thermoplastic material, the barrier layer, the adhesive layer and the innermost layer of thermoplastic material, and there are also low-density po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B1/02B32B27/32C08L23/08
Inventor 吴壮
Owner TAIZHOU ZHUYE MACHINERY SCI & TECH
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