JP2007044882A - 防錆シート - Google Patents
防錆シート Download PDFInfo
- Publication number
- JP2007044882A JP2007044882A JP2005228468A JP2005228468A JP2007044882A JP 2007044882 A JP2007044882 A JP 2007044882A JP 2005228468 A JP2005228468 A JP 2005228468A JP 2005228468 A JP2005228468 A JP 2005228468A JP 2007044882 A JP2007044882 A JP 2007044882A
- Authority
- JP
- Japan
- Prior art keywords
- resin layer
- rust preventive
- layer
- sheet
- rust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Abstract
【解決手段】 吸湿層と、内側樹脂層と、外側樹脂層とがこの順に積層された防錆シートであって、前記吸湿層は、紙基材又はセルロース繊維含有不織布からなり、かつ、多数の貫通孔を有し、前記吸湿層及び/又は内側樹脂層は、気化性防錆剤を含有することを特徴とする。
【選択図】 図1
Description
特に、内側樹脂層に厚さを10μm以上50μm以下とするポリオレフィンを用いることにより、内側樹脂層と内側樹脂層とを貫通孔を介して容易にヒートシールすることができる。さらに、気化性防錆剤を含有させた場合には、気化性防錆剤が内側樹脂層中で変質することを防止できる。
外側樹脂層の厚さが、20μm未満であると、包装する際に、破損するおそれがあり、一方、200μmを超えると、包装が困難となるおそれがある。
吸湿層の開口率が、1%未満であると、内容物の確認が困難になるおそれがあり、一方、50%を超えると、寒暖の差がある環境等で包装内部に結露が生じるおそれがある。
図1は、本発明の防錆シートの実施形態の一例を示す平面図であり、図2は、図1のA−A面に沿った断面図である。
セルロース繊維含有不織布と外側樹脂層との間に、内側樹脂層を構成する溶融合成樹脂を押出ラミネーション法によって押出し、セルロース繊維含有不織布と内側樹脂層と外側樹脂層とがこの順に積層された積層シートを作製する。このとき、押出ラミネーション法を用いることにより、適切な厚さを有する外側樹脂層にセルロース繊維含有不織布を積層することができる。
気化性防錆剤を含有する防錆剤塗料をセルロース繊維含有不織布面に塗工機を用いて塗布して、防錆シートを得る。
内側樹脂層を構成する溶融合成樹脂に気化性防錆剤を含有させ、防錆剤含有溶融合成樹脂を作製する。
紙基材と外側樹脂層との間に、防錆剤含有溶融合成樹脂を押出ラミネーション法によって押出し、紙基材と内側樹脂層と外側樹脂層とがこの順に積層された防錆シートを得る。このとき、押出ラミネーション法を用いることにより、適切な厚さを有する外側樹脂層に紙基材を積層することができる。
(1)積層シート作製工程
直径4mmである円柱形状の貫通孔が形成されているセルロース繊維含有不織布(開口率25%、木材パルプ繊維:ポリプロピレン=50:50)とポリエチレン層(厚さ80μm)との間に、溶融ポリエチレンを押出ラミネーション法によって押出して内側樹脂層を形成し積層シートを作製した。
亜硝酸ソーダ20重量部、アルカノールアミン・カルボン酸塩80重量部を水性系媒体に溶解して調製した防錆剤塗料を、セルロース繊維含有不織布面にバーコーターで塗布量を7g/m2 (防錆剤換算)とするように塗布し、乾燥して実施例1に係る防錆シート(内側樹脂層の厚さ15μm)を得た。
(1)気化性防錆剤混合工程
溶融ポリエチレン98重量部に安息香酸アンモニウム塩2重量部を含有させ、防錆剤含有溶融合成樹脂を作製した。
直径3mmである円柱形状の貫通孔が形成されているセルロース繊維含有不織布(開口率30%、レーヨン:ポリプロピレン=50:50)とポリエチレン層(厚さ75μm)との間に、防錆剤含有溶融合成樹脂を押出ラミネーション法によって押出して実施例2に係る防錆シート(内側樹脂層の厚さ20μm)を得た。
2、12、22 吸湿層
3 内側樹脂層
4 外側樹脂層
Claims (4)
- 吸湿層と、内側樹脂層と、外側樹脂層とがこの順に積層された防錆シートであって、
前記吸湿層は、紙基材又はセルロース繊維含有不織布からなり、かつ、多数の貫通孔を有し、
前記吸湿層及び/又は内側樹脂層は、気化性防錆剤を含有することを特徴とする防錆シート。 - 前記内側樹脂層は、ポリオレフィンからなり、かつ、厚さを10μm以上50μm以下とする請求項1に記載の防錆シート。
- 前記外側樹脂層は、ポリオレフィンからなり、かつ、厚さを20μm以上200μm以下とする請求項1又は2に記載の防錆シート。
- 前記貫通孔による吸湿層の開口率は、平面視した吸湿層の面積に対して1%以上50%以下である請求項1〜3のいずれかに記載の防錆シート。
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2013544687A (ja) * | 2010-12-01 | 2013-12-19 | ノーザン テクノロジーズ インターナショナル コーポレーション | 金属を腐食性ガスから保護するための積層品 |
WO2020036374A1 (ko) * | 2018-08-14 | 2020-02-20 | 주식회사 삼부테크 | 기화성 방청 코팅지 및 그 제조방법 |
US20210115569A1 (en) * | 2019-10-16 | 2021-04-22 | Clifford Lee | Apparatus for inhibiting corrosion of articles with metal surfaces |
JP2021533014A (ja) * | 2018-08-14 | 2021-12-02 | サムプ テック カンパニー リミテッド | 気化性防錆コーティング紙及びその製造方法 |
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JPS60188175U (ja) * | 1984-05-22 | 1985-12-13 | 大三株式会社 | 鉄板等の梱包用包装材 |
JPS62122973A (ja) * | 1985-11-21 | 1987-06-04 | 中越ポリコ−ト株式会社 | 防錆袋 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2013544687A (ja) * | 2010-12-01 | 2013-12-19 | ノーザン テクノロジーズ インターナショナル コーポレーション | 金属を腐食性ガスから保護するための積層品 |
WO2020036374A1 (ko) * | 2018-08-14 | 2020-02-20 | 주식회사 삼부테크 | 기화성 방청 코팅지 및 그 제조방법 |
JP2021533014A (ja) * | 2018-08-14 | 2021-12-02 | サムプ テック カンパニー リミテッド | 気化性防錆コーティング紙及びその製造方法 |
US20210115569A1 (en) * | 2019-10-16 | 2021-04-22 | Clifford Lee | Apparatus for inhibiting corrosion of articles with metal surfaces |
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