Packaging container

一种包装容器、热塑性材料的技术，应用在散装化学品生产、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、合格率高、保质时间长的效果

CN104760338AInactive Publication Date: 2015-07-08TAIZHOU ZHUYE MACHINERY SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-07-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a packaging container which is characterized by comprising a thermoplastic material outermost layer, a sandwich layer, a thermoplastic material intermediate layer, a blocking layer, an adhesion agent layer and a thermoplastic material innermost layer from the outside in, wherein the adhesion agent layer comprises metallocene linear low density polyethylene (MLLDPE) and low density polyethylene (LDPE); the MLLDPE comprises the following parameters: average density of 0.88 g / cm<3> to 0.925 g / cm<3>, melt flow index (190 DEG C, 2.16kg) of 5 g / 10 min to 20 g / 10 min, peak melting point of 85 DEG C to 130 DEG C and expansion ratio of 1.2 to 1.8; and the LDPE comprises the following parameters: average density of 0.90 g / cm<3> to 0.925 g / cm<3>, melt flow index (190 DEG C, 2.16kg) of 5 g / 10 min to 20 g / 10 min, peak melting point of 85 DEG C to 110 DEG C and expansion ratio of 1.2 to 1.8. The longitudinal sealing part can be heat-sealed during the process of preparing the packaging container, the sealing strength is good, the prepared packaging container has high percent of pass, and the shelf life of liquid food is long.
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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 2012105940993. 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...

Examples

Embodiment Construction

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

[0025] The adhesive layer 25 comprises metallocene catalyst polymerized linear low density polyethylene (MLLDPE) and low density polyethylene (LDPE), wherein the metallocene catalyst polymerized linear low density polyethylene (mLLDPE) has the following parameters: the average density is 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 / 10min, peak melting point is 85℃~110℃, expansion ...