JPS6359377B2 - - Google Patents
Info
- Publication number
- JPS6359377B2 JPS6359377B2 JP556081A JP556081A JPS6359377B2 JP S6359377 B2 JPS6359377 B2 JP S6359377B2 JP 556081 A JP556081 A JP 556081A JP 556081 A JP556081 A JP 556081A JP S6359377 B2 JPS6359377 B2 JP S6359377B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- humidifying
- plate
- molded product
- shaped plastic
- 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.)
- Expired
Links
- 239000004033 plastic Substances 0.000 claims description 45
- 229920003023 plastic Polymers 0.000 claims description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 18
- 229920003002 synthetic resin Polymers 0.000 claims description 11
- 239000000057 synthetic resin Substances 0.000 claims description 11
- 230000002209 hydrophobic effect Effects 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000002250 absorbent Substances 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 40
- 239000004925 Acrylic resin Substances 0.000 description 5
- 229920000178 Acrylic resin Polymers 0.000 description 5
- 238000010137 moulding (plastic) Methods 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000002655 kraft paper Substances 0.000 description 3
- 239000000123 paper Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000005476 size effect Effects 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Description
【発明の詳細な説明】
本発明は板状プラスチツクス成形品の加湿方法
に関するものであり、短時間内の簡単な操作で、
所定の含水量に加湿された板状プラスチツクス成
形品を得ることのできる加湿方法を提供するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of humidifying a plate-shaped plastic molded product, which can be performed in a short time and with simple operations.
The present invention provides a humidification method capable of obtaining a plate-shaped plastic molded product humidified to a predetermined water content.
アクリル樹脂やカーボネート樹脂等から成形さ
れた板状プラスチツクス成形品は、通常エクスト
ル−ジヨン押出による成形方法で成形されるもの
であるが、押出成形時の高熱のために、成形直後
の含水量が、例えばアクリル樹脂板で0.1％程度
というように、含水量の極めて低い成形品が成形
される。ところで、この含水量の極めて低い板状
プラスチツクス成形品を何枚か積み重ねて放置し
たままにしておくと、中間に積み重ねた板状プラ
スチツクス成形品の周縁部分がその中心部分に比
較して加湿される速度が極めて早く、このため積
み重ねられている板状プラスチツクス成形品に反
りが発生して歪んだり、また、得られた板状プラ
スチツクス成形品の含水量のばらつきにより、寸
法精度にもばらつきが生ずる等の欠点を有してい
る。このため得られた板状プラスチツクス成形品
を、恒温恒室内に、成形品同士の間に間隔を設け
て一定時間放置したり、あるいは板状プラスチツ
クス成形品を水中に浸漬する等してプラスチツク
ス成形品への加湿を行つているが、前者の方法は
所定の含水量に調整されたプラスチツクス成形品
を得ることが出来るものの、操作手数，時間，経
費等が嵩み、大量処理することが出来なく、また
後者の方法は簡単ではあるが、所定の含水量に調
整されたプラスチツクス成形品を得ることが困難
であるという欠点を有している。 Platy plastic molded products made from acrylic resin, carbonate resin, etc. are usually molded by extrusion, but due to the high heat during extrusion molding, the moisture content immediately after molding is low. For example, molded products with extremely low moisture content, such as acrylic resin plates of about 0.1%, are molded. By the way, if several sheets of plate-shaped plastic moldings with extremely low water content are left stacked together, the periphery of the sheet-shaped plastic moldings stacked in the middle will become more humid than the center. Because of this, the plate-shaped plastic molded products that are stacked can warp and become distorted, and the resulting uneven moisture content of the plate-shaped plastic molded products can affect dimensional accuracy. It has drawbacks such as variations. For this reason, the obtained plate-shaped plastic molded product is left in a constant-temperature chamber for a certain period of time with space between the molded products, or the plate-shaped plastic molded product is immersed in water, etc. Although the former method can produce plastic molded products with a predetermined moisture content, it requires more operations, time, and expense, and requires large-scale processing. Although the latter method is simple, it has the disadvantage that it is difficult to obtain plastic molded products with a predetermined moisture content.
本発明は特許請求の範囲の通りの構成とするこ
とにより、前述のような欠点を伴うことなく、短
時間内の簡単な操作で、所定の含水量に加湿され
た板状プラスチツクス成形品を得ることのできる
加湿方法を提供するものである。 By having the structure according to the claims, the present invention can produce a plate-shaped plastic molded product that has been humidified to a predetermined moisture content in a short time and with simple operations without the above-mentioned drawbacks. The purpose of the present invention is to provide a humidification method that can be obtained.
以下、本発明の板状プラスチツク成形品の加湿
方法について、その構成を図面に基づいて説明す
る。 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the structure of the method for humidifying a plate-shaped plastic molded product of the present invention will be explained based on the drawings.
先ず、本発明方法においては、第１図に例示さ
れるような構成からなる加湿用積層シート１を用
意する。加湿用積層シート１は、疎水性合成樹
脂、例えばポリオレフインによつて構成されてい
る疎水性合成樹脂層２と、吸水性と保水性とを兼
備する構造とされている合成樹脂製シートや紙等
によつて構成されている吸水性層３とが接着剤層
４を介して貼着された構成からなる積層シートで
ある。 First, in the method of the present invention, a humidifying laminated sheet 1 having a structure as illustrated in FIG. 1 is prepared. The humidifying laminated sheet 1 includes a hydrophobic synthetic resin layer 2 made of a hydrophobic synthetic resin such as polyolefin, and a synthetic resin sheet, paper, etc. that has a structure that has both water absorption and water retention properties. This is a laminated sheet consisting of a water-absorbent layer 3 and a water-absorbing layer 3, which are adhered to each other with an adhesive layer 4 interposed therebetween.
次いで、前記加湿用積層シート１の吸水性層３
に、予め決定しておいた量の水又は水と低級アル
コールとからなる混合液を塗布、又は含浸等の手
段で付与し、含水させる。吸水性層３に付与する
水又は水と低級アルコールとからなる混合液の量
は、本発明方法によつて得られる板状プラスチツ
クス成形品に対して所望される加湿度合によつて
調整されるもので、予め決定された量である。 Next, the water absorbent layer 3 of the humidifying laminated sheet 1
A predetermined amount of water or a mixture of water and lower alcohol is applied to the material by coating or impregnation to make it hydrated. The amount of water or a mixture of water and lower alcohol applied to the water-absorbing layer 3 is adjusted depending on the desired humidity level for the plate-shaped plastic molded product obtained by the method of the present invention. It is a predetermined amount.
しかる後に、含水された吸水性層を有する加湿
用積層シート１′を、被処理成形品たる別製の板
状プラスチツクス成形品５の表面に、第２図に示
されるように、加湿用積層シート１′における含
水した吸水性層３′が直接接するようにして積層，
密着させ、暫時放置することにより、含水した吸
水性層３′の含水分を板状プラスチツクス成形品
５に移行，吸収させる。 Thereafter, the humidifying laminate sheet 1' having a water-containing water-absorbing layer is applied to the surface of a separate plate-shaped plastic molded product 5, which is a molded product to be treated, as shown in FIG. Laminating the sheet 1' so that the water-containing water-absorbing layer 3' is in direct contact with the
By bringing them into close contact and leaving them for a while, the water contained in the water-containing water-absorbing layer 3' is transferred to and absorbed by the plate-shaped plastic molded product 5.
最終工程は、第３図に示される通り、前記加湿
用積層シート１′における含水した吸水性層３′中
の含水分によつて加湿された板状プラスチツクス
成形品５′と、含水分の大部分が除去された後の
吸水性層３″を有する加湿用積層シート１″とを、
それぞれ分離し、目的とする加湿された板状プラ
スチツクス成形品５′を得るものである。 As shown in FIG. 3, the final step is to remove the plate-shaped plastic molded product 5' which has been humidified by the moisture contained in the water-containing water-absorbing layer 3' of the humidifying laminated sheet 1', and A humidifying laminated sheet 1'' having a water-absorbing layer 3'' after most of it has been removed,
They are separated to obtain the desired humidified plate-shaped plastic molded product 5'.
本発明の板状プラスチツクス成形品の加湿方法
は以上の通りの構成から成るもので、加湿用積層
シート１の吸水性層３の吸水量は、吸水性層３と
して使用される合成樹脂の発泡シートの発泡度合
の粗密や厚さ、あるいは同じく吸水性層３として
使用される紙のサイズ効果の大小や厚さ等によつ
て適宜調整することが出来る。 The method for humidifying a plate-shaped plastic molded product according to the present invention is constructed as described above. It can be adjusted as appropriate by adjusting the foaming degree and thickness of the sheet, or the size effect and thickness of the paper used as the water-absorbing layer 3.
また、加湿用積層シート１の吸水性層３を含水
せしめる際に、水と低級アルコールとの混合液を
以つて含水せしめるようにすれば、該混合液によ
つて含水した吸水性層３′中の低級アルコール分
が適宜蒸発し、吸水性層３′中の水分のみが被処
理成形品たる板状プラスチツクス成形品へ移行，
吸収させる。したがつて、加湿程度が僅かな板状
プラスチツクス成形品５′を得たい場合には、大
量の低級アルコールで稀釈された水を吸水性層３
に付与するようにすれば、含水量が微妙に調整さ
れ、かつ均質に含水している吸水性層３′を有す
る加湿用積層シート１′が得られるので、簡単に
初期の目的の通り、微妙に調整された加湿度合の
板状プラスチツクス成形品５′を得ることが出来
る。この場合、水と共に板状プラスチツクス成形
品中に吸収された低級アルコールは、処理された
板状プラスチツクス成形品の含水量に影響を及ぼ
さないので、微妙に調整された含水量の板状プラ
スチツクス成形品を初期の目的通りに得ることが
出来る。 Furthermore, when the water-absorbing layer 3 of the humidifying laminated sheet 1 is impregnated with water, it is possible to make the water-absorbing layer 3' hydrated by using a mixture of water and lower alcohol. The lower alcohol content evaporates appropriately, and only the moisture in the water-absorbing layer 3' transfers to the plate-shaped plastic molded product to be treated.
Let it absorb. Therefore, when it is desired to obtain a plate-shaped plastic molded product 5' with a slight degree of humidification, water diluted with a large amount of lower alcohol is added to the water-absorbing layer 3.
If the moisture content is finely adjusted, a humidifying laminated sheet 1' having a water-absorbing layer 3' containing water homogeneously can be obtained. It is possible to obtain a plate-shaped plastic molded product 5' having a humidified humidity adjusted to the desired temperature. In this case, the lower alcohols absorbed into the sheet plastic moldings together with water do not affect the moisture content of the treated sheet plastic moldings, so that the finely adjusted moisture content of the sheet plastics moldings can be reduced. It is possible to obtain a molded product according to the initial purpose.
さらに、含水された吸水性層３′を有する加湿
用積層シート１′と被処理成形品たる別製の板状
プラスチツクス成形品５とを積層，密着させ、こ
れを暫時放置し、吸水性層３′中の含水分を板状
プラスチツクス成形品５へ移行，吸収させる際
に、もし必要ならば、加湿用積層シート１′と板
状プラスチツクス成形品５との積層体を密封包装
して放置するようにすれば、加湿用積層シート
１′における吸水性層３′中の含水分を殆ど空気中
に蒸散させることなく、板状プラスチツクス成形
品への加湿に利用できるので好ましい。また、吸
水性層３′中の含水分を板状プラスチツクス成形
品５へ移行，吸収させる際の水分の吸収を促進さ
せるには、加湿用積層シート１′と板状プラスチ
ツクス成形品５との積層体を、板状プラスチツク
ス成形品が熱変形することのない程度の温度に加
温された雰囲気中に放置することが好ましい。 Further, the humidifying laminated sheet 1' having the water-containing water-absorbing layer 3' and a separate plate-shaped plastic molded product 5 as the molded product to be treated are laminated and brought into close contact with each other, and this is left for a while, and the water-absorbing layer 3' When the moisture contained in the humidifying sheet 3' is transferred to and absorbed by the plate-shaped plastic molded product 5, if necessary, the laminate of the humidifying laminate sheet 1' and the plate-shaped plastic molded product 5 may be sealed and packaged. It is preferable to leave the moisture in the water-absorbing layer 3' of the humidifying laminated sheet 1' because it can be used for humidifying the plate-shaped plastic molded product without evaporating much of the moisture into the air. In addition, in order to promote the absorption of moisture when the water content in the water-absorbing layer 3' is transferred to and absorbed by the plate-shaped plastic molded product 5, it is necessary to combine the humidifying laminated sheet 1' and the plate-shaped plastic molded product 5. It is preferable to leave the laminate in an atmosphere heated to a temperature that does not cause thermal deformation of the plate-shaped plastic molded product.
なお、本発明方法は、疎水性層となる合成樹脂
製フイルムと、吸水性層となる合成樹脂の発泡シ
ートや紙と、被処理成形品たる板状プラスチツク
ス成形品とを、各枚葉状態で使用することもでき
るが、板状プラスチツク成形品たるプラスチツク
スシートの生産工程中に、本発明工程を組み込
む、即ち押出し成形されたプラスチツクスシート
に、含水した吸水性層３′と疎水性層２たる合成
樹脂製フイルムとからなる加湿用積層シートを連
続的に密着させることが出来るので、操作に要す
る手間と費用とを低減せしめることが出来、かつ
安定した品質のものが得られるという特質をも有
する。 In addition, in the method of the present invention, a synthetic resin film serving as a hydrophobic layer, a foamed synthetic resin sheet or paper serving as a water-absorbing layer, and a plate-shaped plastic molded product serving as a molded product to be treated are prepared in a sheet state. However, the process of the present invention is incorporated into the production process of a plastic sheet, which is a plate-shaped plastic molded product, that is, an extrusion-molded plastic sheet is coated with a water-containing water-absorbing layer 3' and a hydrophobic layer. Since the humidifying laminated sheet consisting of two synthetic resin films can be brought into continuous contact with each other, the effort and cost required for operation can be reduced, and products of stable quality can be obtained. It also has
本発明の板状プラスチツクス成形品の加湿方法
は叙上の通りの構成から成るものであり、予め規
定された所定の含水量に加湿された板状プラスチ
ツクス成形品を、簡単な操作で、短時間内の処理
で、かつ大量に得ることができるという効果を奏
するものである。 The method for humidifying a plate-shaped plastic molded article of the present invention is constructed as described above, and a plate-shaped plastic molded article that has been humidified to a predetermined moisture content can be humidified by a simple operation. This has the advantage that it can be processed in a short time and can be obtained in large quantities.
また、本発明方法では、疎水性合成樹脂層と、
優れた吸水性と保水性とを兼備する吸水性層とか
らなる加湿用積層シートにおける吸水性層に付与
した水分を、該加湿用積層シートの吸水性層と被
処理成形品たる板状プラスチツクス成形品とを密
接することにより吸水性層中の含水分を板状プラ
スチツクス成形品に移行，吸収せしめるものであ
るから、吸水性層中に含有せしめた水分は、該吸
水性層を被覆している疎水性合成樹脂層の存在に
より、大気中に蒸散することなく、効果的に被処
理成形品に移行，吸収されるので極めて微妙に調
整された含水量に加湿された板状プラスチツクス
成形品を得ることが出来、しかも被処理成形品た
る板状プラスチツクス成形品自体が高度の撥水性
を具備し、直接水又は水と低級アルコールとの混
合液を被処理成形品の表面に塗布しても、撥水し
てしまつて、その加湿程度の制御が固難であるよ
うなプラスチツクス成形品であつても、極めて微
妙に調整された含水量に加湿された板状プラスチ
ツクス成形品を、低コストの操作のみで得ること
が出来るという効果を奏する。 Further, in the method of the present invention, a hydrophobic synthetic resin layer,
In a humidifying laminated sheet comprising a water-absorbing layer having both excellent water absorption and water retention, the moisture imparted to the water-absorbing layer is transferred to the water-absorbing layer of the humidifying laminated sheet and the plate-shaped plastic that is the molded product to be treated. By bringing the water-absorbing layer into close contact with the molded product, the water contained in the water-absorbing layer is transferred to and absorbed by the plate-shaped plastic molded product, so the water contained in the water-absorbing layer coats the water-absorbing layer. Due to the presence of a hydrophobic synthetic resin layer, it is effectively transferred to and absorbed into the molded product without evaporating into the atmosphere, allowing sheet plastic molding to be humidified to an extremely finely controlled moisture content. In addition, the plate-shaped plastic molded product to be treated itself has a high degree of water repellency, and water or a mixture of water and lower alcohol can be applied directly to the surface of the molded product to be treated. Even if plastic molded products are water repellent and it is difficult to control the degree of humidification, we can produce plate-shaped plastic molded products that have been humidified to a very finely adjusted moisture content. , it has the effect that it can be obtained only by low-cost operations.
更に、本発明方法においては、疎水性合成樹脂
層が介在した吸水性層を有する積層シートを加湿
用積層シートとして用いているので、例えば無サ
イズ紙のように、含水により強度が極端に低下す
る性質の吸水性層を利用しても、該吸水性層が破
断する等のトラブルを生ずることがないので、極
めて均質に加湿された板状プラスチツクス成形品
を得ることができるという効果を奏する。 Furthermore, in the method of the present invention, a laminated sheet having a water-absorbing layer with a hydrophobic synthetic resin layer interposed therebetween is used as a humidifying laminated sheet. Even if a water-absorbing layer of this type is used, troubles such as breakage of the water-absorbing layer will not occur, so it is possible to obtain a plate-shaped plastic molded product that is extremely homogeneously humidified.
以下、本発明の加湿方法の具体的構成を実施例
で以つて説明し、併せ、その効果を明記する。 Hereinafter, the specific structure of the humidifying method of the present invention will be explained using Examples, and the effects thereof will also be specified.
実施例
厚さ20μのポリプロピレンフイルムと150ｇ／
m2のクラフト紙とを、厚さ15μの溶融押出しポリ
エチレンフイルムを介在させてエクストル−ジヨ
ン積層し、本発明において使用する加湿用積層シ
ートを得た。Example 20μ thick polypropylene film and 150g/
A humidifying laminated sheet for use in the present invention was obtained by extrusion laminating a kraft paper of 2 m2 with a melt-extruded polyethylene film of 15 μm in thickness interposed therebetween.
得られた加湿用積層シートの前記クラフト紙面
にロールコート法にて水／メチルアルコール＝
５／１の混合液を24ｇ／m2の割合で塗布し、これ
を厚さ２mmの別製のアクリル樹脂板（含水率0.1
％）に、加湿用積層シートのクラフト紙面がアク
リル樹脂板に接するようにして貼り付けたものを
50枚重ねて密封包装し、７日間，40℃で放置した
ところ、含水率0.7％の略均一に加湿されたアク
リル樹脂板が得られた。 The kraft paper surface of the obtained humidifying laminated sheet was coated with water/methyl alcohol by roll coating
A 5/1 mixed solution was applied at a rate of 24 g/ m2 , and this was applied to a separate 2 mm thick acrylic resin plate (moisture content 0.1
%), the kraft paper side of the humidifying laminated sheet was attached to the acrylic resin board.
When 50 sheets were stacked and sealed and left at 40° C. for 7 days, a substantially uniformly humidified acrylic resin sheet with a moisture content of 0.7% was obtained.
第１図は本発明の加湿方法に使用される加湿用
積層シートの１例を示す断面図、第２〜３図はそ
れぞれ本発明の加湿方法の途中工程を示す断面図
である。
１……加湿用積層シート、２……疎水性合成樹
脂層、３……優れた吸水性と保水性とを兼備する
吸水性層、１′……含水した吸水性層３′を具備す
る加湿用積層シート、５……被処理成形品たる別
製の板状プラスチツクス成形品、５′……加湿さ
れた板状プラスチツクス成形品。
FIG. 1 is a cross-sectional view showing one example of a humidifying laminated sheet used in the humidifying method of the present invention, and FIGS. 2 and 3 are cross-sectional views showing intermediate steps in the humidifying method of the present invention. 1... Humidifying laminated sheet, 2... Hydrophobic synthetic resin layer, 3... Water-absorbent layer having both excellent water absorption and water retention, 1'... Humidifier comprising water-containing water-absorbing layer 3' 5... Separate plate-shaped plastic molded product as a molded product to be treated, 5'... Humidified plate-shaped plastic molded product.
Claims (1)
とを兼備する吸水性層とからなる加湿用積層シー
トの前記吸水性層に、水又は水と低級アルコール
とからなる混合液の一定量を付与、含水させ、次
いで、この吸水性層が含水状態にある加湿用積層
シートと別製の板状プラスチツクス成形品とを、
板状プラスチツクス成形品の表面に加湿用積層シ
ートの吸水性層が密接するようにして積層、密着
させ、暫時放置することにより加湿用積層シート
における吸水性層の含水分を板状プラスチツクス
成形品に移行，吸収させ、しかる後に、板状プラ
スチツクス成形品と加湿用積層シートとを分離す
ることを特徴とする板状プラスチツクス成形品の
加湿方法。1. A certain amount of water or a mixture of water and lower alcohol is added to the water absorbent layer of a humidifying laminated sheet consisting of a hydrophobic synthetic resin layer and a water absorbent layer that has both excellent water absorption and water retention properties. Then, the humidifying laminated sheet with the water-absorbing layer in a hydrated state and a separate plate-shaped plastic molded product are
The water-absorbent layer of the humidifying laminated sheet is laminated and adhered to the surface of the plate-shaped plastic molded product, and the water content in the water-absorbing layer of the humidifying laminated sheet is removed by forming the plate-shaped plastic product. 1. A method for humidifying a plate-shaped plastic molded product, which comprises transferring and absorbing the moisture into the product, and then separating the plate-shaped plastic molded product from a humidifying laminated sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56005560A JPS57120415A (en) | 1981-01-17 | 1981-01-17 | Moistening method of sheet like plastic molded article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56005560A JPS57120415A (en) | 1981-01-17 | 1981-01-17 | Moistening method of sheet like plastic molded article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57120415A JPS57120415A (en) | 1982-07-27 |
| JPS6359377B2 true JPS6359377B2 (en) | 1988-11-18 |
Family
ID=11614577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56005560A Granted JPS57120415A (en) | 1981-01-17 | 1981-01-17 | Moistening method of sheet like plastic molded article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57120415A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5011409B1 (en) * | 1970-03-06 | 1975-05-01 |
-
1981
- 1981-01-17 JP JP56005560A patent/JPS57120415A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57120415A (en) | 1982-07-27 |
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