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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 contamination and product degradation, and in the case of food or pharmaceuticals, it also leads to problems of consumer safety
[0016] In addition, the process of putting the desiccant bag inside the product is complicated. After the desiccant performs the function of absorbing water, there is a high possibility of odor and reaction products.

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

Embodiment 1

[0052] Embodiment 1: Performance analysis of water-absorbing agent

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

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

[0055] In consideration of processability when used in a film, processability of suitable particle size suitable for mixing in a film, and economical efficiency in mass production, easily available materials were mainly selected.

[0056] The substances described ...

Embodiment 2

[0091] Embodiment 2: Feasibility analysis of manufacturing thin films suitable for plates

[0092] Two hygroscopic substances, PAPSS and ATPGAA, were selected through Example 1 above. Studies have been conducted for their use in packaging materials. First, the physical properties and material dispersibility were evaluated after manufacturing a board using common plastic LDPE resin. The development feasibility of the thin film was evaluated through the intermediate step of the final target functional thin film development process-sheet fabrication.

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

[0094] The board was produced by hot pressing under the conditions of 200° C. and 10 MPa pressure. Use LDPE as the resin for making the board, and the functional substance is PAPSS and ATPGAA selected in the above-mentioned embodiment 1. In order to disperse the two substances evenly on the LDPE resin, the particle size should be less than 1000μm.

[0095] In order to deter...

Embodiment 3

[0112] Embodiment 3: the making of film

[0113] 3-1: Manufacture of film

[0114] According to the experimental results of making plates, the dispersion effect of the dispersant is not ideal due to the agglomeration phenomenon of the powdery functional substances when they are in contact. Therefore, mechanical dispersion was selected, and after primary dispersion was performed by manufacturing a pallet by compounding with resin, secondary dispersion was performed by a film extrusion process.

[0115] Mixing was carried out by NPI Co., Ltd. in Wonju, Gangwon-do. A twin-screw extrusion molding device was used, and LLDPE-hanwha 3126 for film was used as the resin. In order to minimize the decrease in physical properties due to the particle size, the particle size of PAPSS and ATPGAA was ground to 100 mesh and used. The content of functional substances inside the pallet was prepared at 10% by weight. The temperature setting of each section is: first cylinder (cylinder) 150°C,...

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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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