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Moistureproof packaging method for acrylic acid resin plate

A packaging method and resin-like technology, applied in packaging, wrapping paper, transportation and packaging, etc., can solve problems such as product value decline, and achieve the effect of preventing changes

Active Publication Date: 2009-08-12
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the shape of the acrylic resin plate changes, not only will the value of the product decrease, but it will also become a big problem for the product in various applications, especially in applications that require precision.

Method used

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  • Moistureproof packaging method for acrylic acid resin plate
  • Moistureproof packaging method for acrylic acid resin plate
  • Moistureproof packaging method for acrylic acid resin plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] According to the following procedures, the moisture-proof packaging of the acrylic resin board is specifically implemented ( figure 1 ).

[0030] 1) Lay corrugated cardboard 4 with a thickness of 5 mm on a wooden backing plate 5 with a length of 1400 mm, a width of 1400 mm, and a height of 120 mm.

[0031] 2) Next, lay a linear low-density polyethylene (L-LDPE) film with a length of 2300mm, a width of 3600mm, and a thickness of 200μm (based on JISZ0208 condition B, the measured moisture permeability is 1.9g / m 2 24 h; the moisture permeability recorded below was also measured under the same conditions) as the synthetic resin film 3.

[0032] 3) Next, lay a moisture-proof protective sheet with a length of 1400 mm and a width of 1400 mm on it as the protective sheet 2 . The moisture-proof and moisture-retaining layer is a thin plate with moisture-proof performance (thickness of aluminum evaporation is 2.0nm), PET12μm / PE15μm / foamed PE2mm, moisture permeability 0.5g / m 2 ...

Embodiment 2

[0041] Use low-density polyethylene (LDPE) film of the same size and thickness (moisture permeability 2.3g / m 2 24h) instead of the linear low-density polyethylene (L-LDPE) film, as the synthetic resin film 3, and a thin plate with moisture-proof performance (the thickness of the aluminum vapor deposition is 2.0nm) PET12μm / PE20μm / K liner paper 280g m 2 / PE20μm, moisture permeability 0.6g / m 2 · 24h) Except for the moisture-proof protective film 2, the same as in Example 1, moisture-proof packaging was carried out, and storage and evaluation were carried out together with the package in Example 1. The results are shown in Table 1.

Embodiment 3

[0043] Use the same corrugated cardboard (moisture permeability 2000g / m 2 · 24h) Except that the moisture-proof protection sheet was used as the protection sheet 2, the same as in Example 1, moisture-proof packaging was performed, and storage and evaluation were carried out together with the package in Example 1. The results are shown in Table 1.

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Abstract

The present invention suppresses the problem that the curvature of the acrylic resin sheet changes over time, etc., by a simple method. The present invention relates to a moisture-proof packaging method for loading a plurality of acrylic resin plates 1 and wrapping the acrylic resin plates with a synthetic resin film 3 (a film made of polypropylene or polyethylene material). The moisture permeability of the synthetic resin film 3 is preferably less than or equal to 2.5g / m2. 24h.

Description

technical field [0001] The present invention relates to a moisture-proof packaging method of an acrylic resin board that does not cause problems such as curling even in the case of long-term storage. Background technique [0002] Acrylic resin sheets are often used in lenses, automotive parts, lighting parts, and various electronic displays due to their excellent optical properties. In recent years, it is also used as a light guide plate for displays such as liquid crystal displays, and demand has surged. [0003] These acrylic resin plates can be obtained by, for example, adding polyfunctional (methyl Base) the casting polymerization method of acrylate, or for example referring to Patent Document 2, Japanese Unexamined No. 52-94362, etc., using a plate-type continuous plate-making device, supplying raw materials in the space between the upper and lower metal endless conveyor belts, and using endless Manufactured by a continuous casting method that heats and polymerizes re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D81/26B65D65/40B32B27/00
Inventor 新纯一郎渡边博之莎泽健一
Owner MITSUBISHI CHEM CORP