Micro-breathable plastic film for tobacco packaging and preparation method

A plastic film and tobacco technology, applied in packaging, wrapping paper, transportation and packaging, etc., can solve the problems of cumbersome processing procedures, damage to forest resources, poor ventilation performance, etc., and achieve excellent moisturizing properties, saving forest resources, and environmental protection. Good results

Inactive Publication Date: 2018-07-24
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Currently widely used fiber fabrics with high air permeability have the defect of destroying forest resources. Traditional plastic film materials have poor air permeability, while existing micro-breathable materials have problems such as cumbersome follow-up processing procedures, harsh conditions, low efficiency, and poor environmental protection.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) First lay the non-woven fabric flat, then apply the soap-type rosin glue on the surface of the non-woven fabric, and then level it so that the surface roughness of the soap-type rosin glue layer is ±0.002mm; the non-woven fabric is polyester ; Soap-type rosin gum is rosin sodium soap gum, and the amount of free rosin is 32%;

[0030] (2) Apply an adhesive on the soap-type rosin adhesive layer, and bond and compound the PTFE film layer to obtain a composite film precursor; the adhesive is a silicone pressure-sensitive adhesive with a solid content of 4%; compound In the film precursor, the thickness of each layer is: non-woven fabric layer 4mil, soap type rosin glue layer 2mil, viscose layer 0.8mil, PTFE film layer 4mil;

[0031] (3) The composite film precursor prepared in step (2) is rolled by a cold roll to form air-permeable micropores, and a micro-breathable plastic film for tobacco packaging is obtained; the pressure of the cold roll is 0.7MPa, and the rolling ...

Embodiment 2

[0034] (1) First lay the non-woven fabric flat, then apply the soap-type rosin glue on the surface of the non-woven fabric, and then level it so that the surface roughness of the soap-type rosin glue layer is ±0.001mm; the non-woven fabric is polypropylene ; Soap-type rosin gum is rosin calcium soap gum, and the amount of free rosin is 25%;

[0035] (2) Apply a binder on the soap-type rosin glue layer, and bond and compound the PTFE film layer to obtain a composite film precursor; the binder is a silicone pressure-sensitive adhesive with a solid content of 30%; compound In the film precursor, the thickness of each layer is: non-woven fabric layer 3mil, soap type rosin glue layer 2mil, viscose layer 0.5mil, PTFE film layer 3mil;

[0036] (3) The composite film precursor prepared in step (2) is rolled by a cold roll to form air-permeable micropores, and a micro-breathable plastic film for tobacco packaging is obtained; the pressure of the cold roll is 0.3 MPa, and the rolling li...

Embodiment 3

[0039] (1) First spread the non-woven fabric flat, then apply the soap-type rosin glue on the surface of the non-woven fabric, and then level it so that the surface roughness of the soap-type rosin glue layer is ±0.002mm; the non-woven fabric is nylon ; Soap-type rosin gum is rosin manganese soap gum, and the amount of free rosin is 40%;

[0040](2) Apply a binder on the soap-type rosin glue layer, and bond and compound the PTFE film layer to obtain a composite film precursor; the binder is a silicone pressure-sensitive adhesive with a solid content of 50%; compound In the film precursor, the thickness of each layer is: non-woven fabric layer 5mil, soap type rosin glue layer 3mil, viscose layer 1mil, PTFE film layer 5mil;

[0041] (3) The composite film precursor prepared in step (2) is rolled by a cold roll to form air-permeable micropores, and a micro-breathable plastic film for tobacco packaging is obtained; the pressure of the cold roll is 1.2MPa, and the rolling line The...

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Abstract

The invention relates to the field of preparation of packaging films and discloses a micro-breathable plastic film for tobacco packaging and a preparation method. The preparation method comprises thefollowing preparation processes: (1) coating the surface layer of non-woven fabric with soap type rosin size, and then, performing leveling; (2) bonding and compounding the soap type rosin size layerwith a PTFE (polytetrafluoroethylene) film layer to prepare a compound film precursor; and (3) rolling the compound film precursor through a cold roller to obtain the micro-breathable plastic film fortobacco packaging, wherein the air permeability of the micro-breathable plastic film is 8-12L / h, and the density of the micro-breathable plastic film is 0.7-0.9g / cm<3>. Compared with a common tobaccopackaging film, the micro-breathable plastic film prepared by the preparation method disclosed by the invention has the advantages of being good in air permeability, good in moisturizing property, suitable for high-grade tobacco packaging, saved in forest resources, good in environmental friendliness, simple in preparation process and high in production efficiency.

Description

technical field [0001] The invention relates to the field of preparation of packaging films, and discloses a slightly air-permeable plastic film used for tobacco packaging and a preparation method. Background technique [0002] The eternal theme of the tobacco industry has two aspects, one is to reduce harmful ingredients, that is, reduce tar and eliminate harm; the other is to improve the quality of packaging. Among them, packaging is a very prominent issue, which includes factors such as environmental protection technology, process design, materials, and printing technology. The design of cigarette packaging must be based on the principle of environmental protection, that is, in addition to achieving the purpose of ensuring product quality and facilitating transportation and storage, it must also be practical, economical and meet environmental protection requirements. Among them, quality assurance is the most basic requirement. [0003] The moisture retention performance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/12B32B38/00B65D65/40
CPCB32B37/1284B32B38/0012B32B2307/724B65D65/40
Inventor 陈庆昝航
Owner CHENDU NEW KELI CHEM SCI CO LTD
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