Mixed solvent used for cellulose acetate film as packaging material, method for softening cellulose acetate film and packaging method

A technology of a cellulose acetate film and a packaging method, applied in the field of packaging, can solve the problems of hard texture, weak tensile deformation ability, and difficult to fit completely, etc. of the cellulose acetate film

Active Publication Date: 2021-12-24
WENZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, cellulose acetate film has appeared for packaging. The cellulose acetate film has moisture-proof, waterproof, attractive in appearance, and decorative functions. Commonly used cellulose acetate films include cellulose acetate acetate and cellulose acetate nitrate, but the texture of cellulose acetate film It is hard, and the tensile deformation ability is not strong, so it is difficult to fit completely at the corner of the package

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Mixed solution is made up of following parts by weight:

[0029] Methanol: 6 parts

[0030] Acetone: 15 parts

[0031] Acetic acid: 13 parts

[0032] Water: 60 parts;

[0033] The cellulose acetate membrane material was cut into a square of 7cm*7cm, soaked in the prepared mixed solution for 30 minutes, and the treated membrane material was subjected to a tensile test with a tensile testing machine, and the elongation at break was 18%.

Embodiment 2

[0035] Mixed solution is made up of following parts by weight:

[0036] Methanol: 6 parts

[0037] Acetone: 15 parts

[0038] Acetic acid: 13 parts

[0039] Water: 60 parts;

[0040] Before mixing the solution, heat each component to 30°C, cut the cellulose acetate membrane material into a square of 7cm*7cm, soak it in the prepared mixed solution for 25 minutes, and perform a tensile test on the treated membrane material. Tensile test, the elongation at break is 20%.

Embodiment 3

[0042] Mixed solution is made up of following parts by weight:

[0043] Methanol: 6 parts

[0044] Acetone: 15 parts

[0045] Acetic acid: 13 parts

[0046] Water: 60 parts;

[0047] Cut the cellulose acetate membrane material into a square of 7cm*7cm, soak it in the prepared mixed solution for 20 minutes, put it in the refrigerator and keep the temperature at 4°C for 5 minutes, and conduct a tensile test on the treated membrane material Machine tensile test, the elongation at break is 20%.

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Abstract

The invention discloses a mixed solvent used as a packaging material for cellulose acetate film, which comprises the following composition in parts by weight: methanol: 6-20 parts, acetic acid: 6-20 parts, acetone: 1-50 parts, water: 10-20 parts 87 parts, first dissolve the cellulose acetate film into the prepared mixed solution, and make the cellulose acetate film in a swollen state by preparing the solvent in the solution. In this way, the cellulose acetate film can be softened, so that the cellulose acetate film can be attached to the surface of the package in the softened state, and then dried under natural conditions. The cellulose acetate film itself will not be damaged during the swelling process. The molecular structure is damaged. During the drying process, the solvent inside the molecule will volatilize, so that the cellulose acetate film will be released from the swelling state, and the cellulose acetate film will return to its original state and its original mechanical properties. It can be realized that the cellulose acetate film can be completely bonded to the package, including the corners can be completely bonded without wrinkles.

Description

technical field [0001] The invention relates to the field of packaging, and more specifically relates to a mixed solvent used as a packaging material for a cellulose acetate film, a softening method for the cellulose acetate film and a packaging method for the cellulose acetate film. Background technique [0002] The packaging film is mainly composed of several different grades of resin mixed and extruded. It is puncture-resistant, super-strength and high-performance. It wraps the goods stacked on the pallet to make the package more stable and tidy, and has a super waterproof effect. It is widely used in foreign trade export, paper making, hardware, plastic chemical industry, building materials, food and medicine industries. [0003] In the prior art, cellulose acetate film has appeared for packaging. The cellulose acetate film has moisture-proof, waterproof, attractive in appearance, and decorative functions. Commonly used cellulose acetate films include cellulose acetate a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/02B65D65/38C08L1/12
CPCC08J7/02B65D65/38C08J2301/12
Inventor 刘建平刘子赫贾景霞宋霞
Owner WENZHOU UNIV
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