Packaging container

A technology for packaging containers and thermoplastic materials, which is applied in packaging, wrapping paper, transportation and packaging, etc. It can solve the problems of raw material waste and energy waste, and achieve the effects of reduced necking, good sealing strength, and rapid heat sealing

Inactive Publication Date: 2013-04-17
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 the

Method used

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Example Embodiment

[0023] 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.

[0024] 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 ~0.925g / cm 3 , Melt flow index (190℃, 2.16kg) is 5g / 10min~20g / 10min, peak melting point is 85℃~130℃, expansion ratio is 1.2~1.8; low density polyethylene (LDPE) has the following parameters: average density 0.90g / cm 3 ~0.925g / cm 3 , Melt flow index (190℃, 2.16kg) is 5g / 10min~20g / 10min, peak melting ...

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PUM

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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

technical field [0001] The invention relates to a packaging container, in particular to a packaging container used for packaging liquid food. Background technique [0002] 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 polyethylene (LDPE) / printing ink layer / paper ( fiber) base layer / LDPE / aluminum foil AL / LDPE / LDPE, LDPE / printing ink layer / paper base layer / LDPE / LDPE, printing ink layer / LDPE / paper base layer / LDPE / LDPE, such as LDPE / printing ink layer / paper Laminated packaging materials with multi-layer structure ...

Claims

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Application Information

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IPC IPC(8): B65D65/40B65D85/72C08L23/08C08L23/06B32B27/32
Inventor 吴壮
Owner TAIZHOU ZHUYE MACHINERY SCI & TECH
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