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A kind of tensile composite film cement packaging bag and preparation method thereof

A technology for tensile lamination and packaging bags, which is applied in the field of packaging bag processing, can solve the problems of easily damaged cement packaging bags and poor barrier performance, and achieves the effect of meeting the requirements of cement packaging, good barrier performance and good cement packaging requirements.

Active Publication Date: 2021-10-29
安徽天元塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a tensile composite film cement packaging bag and its preparation method, which can solve the defects of easy damage and poor barrier performance of existing cement packaging bags

Method used

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  • A kind of tensile composite film cement packaging bag and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of plastic woven bag layer comprises the steps:

[0028] (1) Take 6 parts of chitosan in parts by mass, dissolve chitosan in water with twice the quality under stirring, then stir at high speed for 2h and vacuum degassing to obtain chitosan slurry;

[0029] (2) Weigh 80 parts of polylactic acid in parts by mass, premix the chitosan slurry with polylactic acid for 1 min, then add 2 parts of whitening agent DT to mix and co-extrude the polylactic acid base material; use a twin-screw extruder Extrude, set the temperature at 170°C, and the screw speed at 320r / min; the extruded pellets are dried at 80°C for 1 hour;

[0030] (3) Weigh 3 parts of glass filaments, blend and extrude the glass filaments and the polylactic acid base material, set the extrusion temperature at 180°C, and the speed at 60m / min, cool naturally, shape, and roll to make a plastic woven bag layer; Among them, the diameter of the glass filament is 0.4mm;

[0031] The preparation me...

Embodiment 2

[0038] The preparation method of plastic woven bag layer comprises the steps:

[0039] (1) Take 10 parts of chitosan in parts by mass, dissolve chitosan in water with twice the quality under stirring, then stir at high speed for 2.5h and vacuum degassing to obtain chitosan slurry;

[0040] (2) Weigh 90 parts of polylactic acid in parts by mass, premix the chitosan slurry with polylactic acid for 3 minutes, then add 3 parts of whitening agent DT to mix and co-extrude the polylactic acid base material; use a twin-screw extruder Extrude, set the temperature at 190°C, and the screw speed at 350r / min; the extruded pellets are dried at 90°C for 1-3 hours;

[0041] (3) Weigh 8 parts of glass filaments, blend and extrude the glass filaments and the polylactic acid base material, set the extrusion temperature to 180°C, and the speed to 60m / min, cool naturally, shape, and roll to make a plastic woven bag layer; Among them, the diameter of the glass filament is 0.6mm;

[0042] The prep...

Embodiment 3

[0049] The preparation method of plastic woven bag layer comprises the steps:

[0050] (1) Take by weighing 8 parts of chitosan in parts by mass, dissolve chitosan in water of twice the quality under stirring, then stir at high speed for 2h and vacuum degassing to obtain chitosan slurry;

[0051] (2) Weigh 85 parts of polylactic acid in parts by mass, premix the chitosan slurry with polylactic acid for 2 minutes, then add 2.5 parts of whitening agent DT to mix and co-extrude the polylactic acid base material; use a twin-screw extruder Extrude, set the temperature at 180°C, and the screw speed at 330r / min; the extruded pellets are dried at 85°C for 2 hours;

[0052] (3) Weigh 5 parts of glass filaments, blend and extrude the glass filaments and the polylactic acid base material, set the extrusion temperature to 180°C, and the speed to 60m / min, cool naturally, shape, and roll to make a plastic woven bag layer; Wherein, the diameter of the glass filament is 0.5mm;

[0053] The pr...

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Abstract

The invention discloses a tensile composite film cement packaging bag and a preparation method thereof, and relates to the technical field of packaging bag processing. The tensile composite film cement packaging bag of the present invention comprises a plastic woven bag layer and a shrink film layer; wherein, the preparation raw materials of the plastic woven bag layer include polylactic acid, glass fiber, chitosan and whitening agent; the preparation of the shrink film Including the preparation of lipophilic modified carbon fibers. The packaging bag prepared by processing in the invention has excellent mechanical properties, better weather resistance and barrier properties than traditional cement packaging bags, and can better meet the needs of cement packaging.

Description

technical field [0001] The invention relates to the technical field of packaging bag processing, in particular to a tension-resistant laminated cement packaging bag and a preparation method thereof. Background technique [0002] Cement is a common building material. Cement packaging bags, as an integral part of the outer packaging of cement products, play a very important role in the transportation and storage of cement. Cement packaging bags are usually made of paper bag paper and composite film materials after sewing or pasting. However, the products on the market are easy to be damaged and have poor barrier properties, especially in long-distance transportation. Worse, causing unnecessary losses. Moreover, because cement is an active substance, after being packaged with poor-quality packaging materials, the cement is very likely to chemically react with water vapor and carbon dioxide in the air during storage and transportation, until agglomeration, granulation, and acti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D30/02C08J5/18C08L67/04
CPCB65D31/00C08J5/18C08J2375/14C08K3/26C08K5/544C08K9/02C08K2003/262C08K2003/265C08L67/04C08L5/08C08K7/14C08K5/353Y02W90/10
Inventor 沈长青
Owner 安徽天元塑业有限公司
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