Resin composition for water absorbing film, water absorbing film for packing, and manufacturing method thereof

A resin composition and packaging technology, applied in packaging, wrapping paper, transportation and packaging, etc., can solve problems such as complicated procedures, product contamination, and product quality reduction, and improve preservation quality and effect, improve preservation effect, The effect that the moisture absorption effect is high

Inactive Publication Date: 2012-09-19
株式会社宝石葩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] As shown above, conventional desiccants used in food, pharmaceuticals, electronic products, etc. are used in a small bag between the product and the package. Therefore, due to the defect of the bag packaging of the desiccant, the desiccant is mixed into the product. Internal phenomena, which lead to problems of product contami

Method used

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  • Resin composition for water absorbing film, water absorbing film for packing, and manufacturing method thereof
  • Resin composition for water absorbing film, water absorbing film for packing, and manufacturing method thereof
  • Resin composition for water absorbing film, water absorbing film for packing, and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0052] Example 1: Performance analysis of water absorbing agent

[0053] Comparing the characteristics of moisture and each adsorbent, we screened out substances that are expected to easily absorb moisture in the atmosphere, and screened out those that can physically adsorb moisture in the atmosphere and surrounding liquids. This is to prevent unnecessary reaction by-products due to chemical bonding between moisture and adsorbent when used in food packaging.

[0054] In addition, the manufacturing process of the adsorbent was grasped, and the substances that minimize the chemical treatment were selected. This is also to reduce the occurrence of problems when used in food packaging.

[0055] Considering the processability when used in a film, the processability of an appropriate particle size suitable for mixing in the film, and the economic efficiency in mass production, materials that are easily available are mainly selected.

[0056] According to the above criteria, the substances ...

Example Embodiment

[0091] Example 2: Feasibility analysis of manufacturing film suitable for plate

[0092] Two hygroscopic substances, PAPSS and ATPGAA, were selected through the above-mentioned Example 1. Research was conducted to use them for packaging materials. First of all, after making a sheet of ordinary plastic LDPE resin, the physical properties and substance dispersibility were evaluated. The feasibility of the development of the film was evaluated by the intermediate step of the final target functional film development process-sheet production.

[0093] 2-1: Production and analysis of thin plates

[0094] Under the conditions of 200°C and 10 MPa pressure, the plates were produced by hot press. LDPE is used as the resin for making the board, and the functional materials are PAPSS and ATPGAA selected in the above Example 1. In order to make these two substances uniformly dispersed on the LDPE resin, the particle size should be less than 1000μm.

[0095] In order to determine the content of...

Example Embodiment

[0112] Example 3: Production of film

[0113] 3-1: Manufacturing of film

[0114] According to the experimental results of making the board, the powdery functional substance will agglomerate at the same time in contact, so the dispersing effect of the dispersant is not ideal. Therefore, mechanical dispersion is selected, a pallet is manufactured by compounding with a resin for primary dispersion, and then a secondary dispersion is performed through a film extrusion process.

[0115] The mixing was implemented by NPI Co., Ltd., Wonju City, Gangwon Province. A twin-screw extrusion molding device is used, and LLDPE-hanwha 3126 for film is used as the resin. In order to minimize the decrease in physical properties caused by the particle size, the particle size of PAPSS and ATPGAA is ground to 100 meshes and used. The functional substance content inside the pallet is produced at 10% by weight. The temperature settings in each section are: 150°C for the first cylinder, 150°C for the se...

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Abstract

The invention relates to a resin composition for a water absorbing film, the water absorbing film for packing, and a manufacturing method of the water absorbing film, in particular to a resin composition for the water absorbing film, which contains polyethylene system resin and a sodium meta-polyacrylate or an acrylamide synthetic attapulgite as water absorbents. According to the invention, the water absorbing film with excellent water adsorptive power and physical property can be manufactured. Flowers are packed with silica gels and moisture absorbing papers to export in order to keep color of flowers when flowers are exported generally; the silica gels and moisture absorbing papers can be replaced by the water absorbing film with convenient operation and high moisture absorption effect so as to increase quality and effect of products; especially, the water absorbing film can be used for dried foods which are sensitive to water, such as powder grain-shaped flours, frying powder, dried seafood and so on, and further can be used for dehumidifying and packing when the water absorbing film is used for storing of mechanical components or high iron productsso as to increase storage effects of the products. And the water absorbing film further can be used as dehumidifying and packing materials for storing products and taking care of interior of warehouses.

Description

technical field [0001] The present invention relates to a water-absorbent film resin composition, a water-absorbent film for packaging and a manufacturing method thereof, in particular to a composition containing polyethylene resin and polyacrylic acid partial sodium salt (PAPSS, polyacrylic acid partial sodium salt) or acrylamide. Attapulgite Synthesized Acrylic Amide (ATPGAA, Attapulgite Synthesized Acrylic Amide) is used as a water-absorbing agent and a resin composition for a water-absorbing film. Background technique [0002] Recently, with the development of modern industry, more and more attention has been paid to the diversification and commodity nature of various products. Products need to be packaged for production, storage, circulation and sales. Consumers are concerned about the convenience of operation and quality preservation of these packages. Sex requirements are also constantly increasing. [0003] Therefore, in order to keep pace with the development of th...

Claims

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Application Information

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IPC IPC(8): C08L23/04C08L23/08C08L33/02C08L33/26B65D65/38B29C49/04
Inventor 李允硕崔洪热李承坤
Owner 株式会社宝石葩
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