JPH0442101Y2 - - Google Patents
Info
- Publication number
- JPH0442101Y2 JPH0442101Y2 JP1987148742U JP14874287U JPH0442101Y2 JP H0442101 Y2 JPH0442101 Y2 JP H0442101Y2 JP 1987148742 U JP1987148742 U JP 1987148742U JP 14874287 U JP14874287 U JP 14874287U JP H0442101 Y2 JPH0442101 Y2 JP H0442101Y2
- Authority
- JP
- Japan
- Prior art keywords
- top plate
- plastic panel
- polyphenylene ether
- welded
- hollow
- 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
- 229920003023 plastic Polymers 0.000 claims description 28
- 239000004033 plastic Substances 0.000 claims description 28
- 229920001955 polyphenylene ether Polymers 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 18
- 239000011347 resin Substances 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000000071 blow moulding Methods 0.000 description 11
- 238000005452 bending Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- -1 polyethylene Polymers 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229920005990 polystyrene resin Polymers 0.000 description 2
- OMIHGPLIXGGMJB-UHFFFAOYSA-N 7-oxabicyclo[4.1.0]hepta-1,3,5-triene Chemical compound C1=CC=C2OC2=C1 OMIHGPLIXGGMJB-UHFFFAOYSA-N 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
- 229920000638 styrene acrylonitrile Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Casings For Electric Apparatus (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は、各種電気機器のハウジング等に用い
られるプラスチツクパネルに関するものである。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a plastic panel used for housings of various electrical devices.
従来の技術
各種電気機器のハウジング等において、耐熱性
および剛性が要求されるものでは、金属製パネル
が広く用いられているが、金属製パネルは、耐熱
性や剛性に優れていても、重量が大となる欠点が
ある。Conventional technology Metal panels are widely used in housings of various electrical devices that require heat resistance and rigidity, but even though metal panels have excellent heat resistance and rigidity, they are heavy and There are major drawbacks.
そこで、従来から金属製のパネルにかえて、プ
ラスチツク製の中空状パネルを用いることによ
り、剛性を損なわずに重量を小さくすることが行
われているが、中空状のプラスチツクパネルは、
通常ブロー成形によつて構成されるので、そのプ
ラスチツク材料としては、ブロー成形が容易なポ
リエチレン、ポリプロピレン等のポリオレフイン
系樹脂が用いられている。 Therefore, hollow plastic panels have traditionally been used instead of metal panels to reduce weight without sacrificing rigidity.
Since it is usually constructed by blow molding, the plastic material used is polyolefin resin such as polyethylene or polypropylene, which is easy to blow mold.
考案が解決しようとする問題点
ところで、上記のようなポリオレフイン系樹脂
は、ブロー成形に適しているので、成形時におけ
る接合部の熱溶着強度も高く、この樹脂を用いれ
ば、ある程度剛性の向上した中空状のプラスチツ
クパネルを得ることができるが、耐熱性に優れ
ず、高温下では剛性も損なわれるのが問題であ
る。Problems that the invention aims to solve By the way, polyolefin resins such as those mentioned above are suitable for blow molding and have high heat welding strength at the joints during molding, so using this resin can improve rigidity to some extent. Although it is possible to obtain a hollow plastic panel, the problem is that it does not have excellent heat resistance and its rigidity is impaired at high temperatures.
そこで、耐熱性に優れ、曲げ強度、圧縮強度お
よび衝撃強度が高いプラスチツクとしてポリフエ
ニレンエーテル系樹脂があるが、このポリフエニ
レンエーテル系樹脂をブロー成形して中空状のパ
ネルを構成すると、ブロー比が高く薄肉となる周
側面の稜線部において亀裂が生じやすく、この部
分を中空状を形成する接合部とした従来ブロー成
形品では、所期の剛性および衝撃強度を有するプ
ラスチツクパネルが得られないのである。 Therefore, polyphenylene ether resin is a plastic with excellent heat resistance and high bending strength, compressive strength, and impact strength, but when blow molding this polyphenylene ether resin to construct a hollow panel, Cracks tend to occur at the ridgeline of the circumferential side, where the ratio is high and the wall is thin, and conventional blow molded products that use this area as a joint to form a hollow shape cannot produce a plastic panel with the desired rigidity and impact strength. It is.
本考案は、このような問題点に鑑み、耐熱性に
優れたポリフエニレンエーテル系樹脂を使用し、
その中空状をなす表板と裏板の周側縁を一体に溶
着してブロー成形することにより、周側面の接合
部をブロー比の高い周側面の稜線部を避けて亀裂
が生じるのを防止するとともに、さらに裏板から
表板にかけて点在して頂部のみ溶着する複数個の
リブを設けたことにより、表板の外観を損なうこ
となく、耐熱性を優れ、高温においても高い剛性
を保持し、しかも曲げ強度、圧縮強度および衝撃
強度に優れたプラスチツクパネルを提供すること
を目的とするものである。 In view of these problems, the present invention uses polyphenylene ether resin with excellent heat resistance.
By welding the circumferential edges of the hollow top and back plates together and blow molding, the joints on the circumferential sides avoid the ridgeline of the circumferential side, where the blow ratio is high, to prevent cracks from forming. In addition, by providing multiple ribs that are scattered from the back plate to the top plate and welded only at the top, it has excellent heat resistance and maintains high rigidity even at high temperatures without damaging the appearance of the top plate. The object of the present invention is to provide a plastic panel having excellent bending strength, compressive strength and impact strength.
問題点を解決するための手段
本考案は、上記目的を達成するため、次のよう
に構成した。Means for Solving the Problems In order to achieve the above object, the present invention is constructed as follows.
すなわち、ポリフエニレンエーテル系樹脂から
なる表板と裏板とを所定の間隔を対向させ、かつ
それらの周側縁を一体に溶着連接してブロー成形
することにより中空板状に形成し、裏板には中空
部側に突出するリブを点在状に複数個形成して、
そのリブの頂部を表板に表板肉厚の５〜55％の範
囲で入り込むように溶着一体化して構成したこと
を特徴とするプラスチツクパネルとしたものであ
る。 That is, a front plate and a back plate made of polyphenylene ether resin are placed facing each other at a predetermined distance, and their circumferential edges are welded and connected to form a hollow plate shape by blow molding. The board is dotted with multiple ribs that protrude toward the hollow part,
The plastic panel is characterized in that the tops of the ribs are integrally welded to the top plate so as to penetrate within the range of 5 to 55% of the thickness of the top plate.
作 用
本考案に係るプラスチツクパネルは、上記のよ
うに構成されているので、耐熱性に優れ、曲げ強
度、圧縮強度および衝撃強度は高いが、ブロー成
形比の高くなる薄肉となる面で亀裂が生じやすい
欠点を有するポリフエニレンエーテル系樹脂を用
いても、中空状をなすプラスチツクパネルの周側
面の接合部はブロー比の高くなる稜線部を避けた
面に位置するので亀裂が生じない。また、中空状
をなす裏板と表板とは、裏板から突出させて点在
するリブの頂部を表板に溶着して一体化させてあ
るので、プラスチツクパネルはいずれかの方向の
荷重に対しても強度が高い。Function: The plastic panel according to the present invention is constructed as described above, so it has excellent heat resistance and high bending strength, compressive strength, and impact strength, but cracks occur on the thin wall surface where the blow molding ratio is high. Even if a polyphenylene ether resin is used, which has the disadvantage of being prone to cracks, cracks do not occur because the joints on the circumferential side of the hollow plastic panel are located away from the ridgeline where the blow ratio is high. In addition, the hollow back and front panels are integrated by welding the tops of the ribs that protrude from the back panel to the front panel, so the plastic panel can withstand loads in either direction. It also has high strength.
このため、プラスチツクパネルは耐熱性に優
れ、しかも剛性が高く、曲げ強度、圧縮強度およ
び衝撃強度に優れたものとなる。上記点在する突
起はその頂部を表板に溶着させてあるのみである
から、溶着により表板にいわゆるヒケやソリが生
ぜず、その外観性はきわめて良好である。 Therefore, the plastic panel has excellent heat resistance, high rigidity, and excellent bending strength, compressive strength, and impact strength. Since the above-mentioned scattered protrusions are only welded at their tops to the top plate, no so-called sink marks or warpage occur on the top plate due to welding, and the appearance is extremely good.
実施例 本考案の実施例を図面について説明する。Example Embodiments of the present invention will be described with reference to the drawings.
第１図および第２図において、１はプラスチツ
クパネルであつて、このプラスチツクパネル１
は、ポリフエニレンエーテル系樹脂からなる表板
２と裏板３とを所定の間隔で対向させ、かつその
周側縁を一体に溶着連接してブロー成形すること
により、表板２と裏板３の間に互いに連接された
周側面４により、中空部５を有する中空板状に形
成したものである。６は周側面４の溶着接合部で
あり、周側面４の溶着接合部６はブロー比が比較
的高くならない周側面４の中間線上に位置してい
る。なお、周側面４の各稜線部はブロー比が高く
薄肉となる。プラスチツクパネル１には、その裏
板３に多数のリブ７が点在状に多数形成されてお
り、リブ７はその頂部中心７ａが表板２に達して
表板２の肉厚Ｄの５％ないし50％入り込む範囲で
溶着されている。このリブ７は肉厚の均一性を維
持するため第１段の凹部８と第２段の凹部９から
なるものであり、第１段の凹部８は直線状に形成
され、第２段の凹部９は湾曲した突起状をなして
いる。 1 and 2, 1 is a plastic panel, and this plastic panel 1
The top plate 2 and the back plate 3 made of polyphenylene ether resin are made to face each other at a predetermined interval, and their peripheral edges are welded and connected together by blow molding. It is formed into a hollow plate shape having a hollow portion 5 by circumferential side surfaces 4 connected to each other between 3 and 3. 6 is a welded joint of the circumferential side 4, and the welded joint 6 of the circumferential side 4 is located on the midline of the circumferential side 4 where the blow ratio is not relatively high. Note that each ridgeline portion of the circumferential side surface 4 has a high blow ratio and is thin. A large number of ribs 7 are formed in a scattered manner on the back plate 3 of the plastic panel 1, and the top center 7a of the rib 7 reaches the top plate 2 and has a thickness of 5% of the wall thickness D of the top plate 2. It is welded to the extent that it penetrates 50% or more. This rib 7 consists of a first stage recess 8 and a second stage recess 9 in order to maintain uniformity in wall thickness.The first stage recess 8 is formed in a straight line, and the second stage recess 9 has a curved protrusion shape.
第２図に示すように、表板２の肉厚Ｄと入り込
む深さＸとの関係は、プラスチツクパネル１の剛
性および外観を大きく左右するものであり、考案
者の実験によれば、深さＸが肉厚Ｄの５％未満で
あるとプラスチツクパネル１に撓み変形応力をか
けた場合、この溶着部分が離れてしまい、その後
は極端に剛性が低下してしまう問題があつた。こ
の理由は明確ではないが、ポリフエニレンエーテ
ル系樹脂自体がポリエチレン等に比べて柔軟性が
劣ることと、またブロー成形時に溶着する部分の
表面がポリエチレン等に比べて早く硬化してしま
うことに起因するものと考えられる。また、深さ
Ｘが肉厚Ｄの55％を越えると表板２の溶着部分に
対応する面が他の面と異質な表面状態となつた
り、いわゆるヒケやソリ等の発生を招き、外観が
劣る問題が生じた。特に、表板２の表面に第２図
のようにブロー成形時のシボ加工されたキヤビテ
イ面より忠実に成形した30μ〜200μ程度の微小凹
凸面２ａを形成した場合、この問題は顕著に発生
する。なお、表板２の肉厚Ｄは通常1.5mm〜4.0mm
程度である。 As shown in FIG. 2, the relationship between the wall thickness D of the top plate 2 and the penetration depth X greatly influences the rigidity and appearance of the plastic panel 1. According to the inventor's experiments, the depth When X is less than 5% of the wall thickness D, there is a problem in that when bending deformation stress is applied to the plastic panel 1, the welded portions separate, and the rigidity thereafter becomes extremely low. The reason for this is not clear, but it is because polyphenylene ether resin itself is less flexible than polyethylene, and the surface of the part that is welded during blow molding hardens faster than polyethylene. This is thought to be due to this. In addition, if the depth X exceeds 55% of the wall thickness D, the surface of the top plate 2 corresponding to the welded part will have a different surface condition from other surfaces, causing so-called sink marks and warping, and the appearance will deteriorate. An inferior problem arose. In particular, this problem occurs significantly when a fine uneven surface 2a of about 30 to 200 microns is formed on the surface of the top plate 2, as shown in Figure 2, which is more faithfully formed than the textured cavity surface during blow molding. . Note that the wall thickness D of the top plate 2 is usually 1.5 mm to 4.0 mm.
That's about it.
第３図には前記のものの他例が示されている。
この実施例においては、リブ７の第１段の凹部８
が第２段の凹部９の周囲を取囲む環状は形成され
ている。その他の構成は前記第１図および第２図
に示したものと同様である。 FIG. 3 shows another example of the above.
In this embodiment, the first stage recess 8 of the rib 7
An annular shape surrounding the second stage recess 9 is formed. The other configurations are the same as those shown in FIGS. 1 and 2 above.
プラスチツクパネル１を構成しているプラスチ
ツク材料は、前記のとおりポリフエニレンエーテ
ル系樹脂であるが、この樹脂はポリフエニレンエ
ーテル樹脂にポリスチレン樹脂をブレンドしたも
の、あるいは、フエニレンエーテル単独重合体、
またはその構造を主体としてなるポリフエニレン
エーテル重合体にポリスチレンの一部または全部
をグラフト結合して変性したもの等である。 The plastic material constituting the plastic panel 1 is polyphenylene ether resin as described above, but this resin may be a blend of polyphenylene ether resin and polystyrene resin, or a phenylene ether homopolymer,
Alternatively, a polyphenylene ether polymer mainly having this structure is modified by grafting a part or all of polystyrene onto the polyphenylene ether polymer.
また、ポリスチレン樹脂としては、ポリブタジ
エン、EPDM等とグラフト化した変性ポリスチ
レン、またスチレン−アクリロニトリル含有重合
体等のスチレン含有重合体である。 Examples of the polystyrene resin include modified polystyrene grafted with polybutadiene, EPDM, etc., and styrene-containing polymers such as styrene-acrylonitrile-containing polymers.
なお、ポリフエニレンエーテル系樹脂中のポリ
フエニレンエーテルの含有量は、15重合部以上で
90重合部以下であることがブロー成形性およびパ
ネル１の剛性のうえで好ましい。 In addition, the content of polyphenylene ether in the polyphenylene ether resin is 15 polymerization parts or more.
In terms of blow moldability and the rigidity of the panel 1, it is preferable that the number of polymerized parts is 90 or less.
さらに、上記ポリフエニレンエーテル系樹脂に
他のプラスチツク、エラストマーまた添加剤をポ
リフエニレンエーテル系樹脂の特性を損なわない
範囲でブレンドすることもできる。 Furthermore, other plastics, elastomers, or additives may be blended with the polyphenylene ether resin to the extent that the properties of the polyphenylene ether resin are not impaired.
以上のように構成されたプラスチツクパネル１
は、耐熱性に優れ、曲げ強度、圧縮強度および衝
撃強度が高いポリフエニレンエーテル系樹脂をブ
ロー成形してなるものであつて、しかも、このプ
ラスチツクパネル１は、中空状を形成する周側面
４の比較的ブロー比の低い中間線上で互いに連接
して構成されているので、周側面４にはその一部
にブロー比が高くなる部分があつても亀裂が生ぜ
ず、ポリフエニレンエーテル系樹脂の本来の特性
を生かした耐熱性、強度性に大いに優れたものと
なるのである。また、プラスチツクパネル１は、
その裏板３と表板２が点在するリブ７によつて一
体化されているので、いずれの方向の荷重に対し
ても強度が高いものとなる。また、表板２にはリ
ブ７の頂部が溶着されているのみであるから、表
板２に溶着による変形、すなわち、いわゆるヒケ
やソリが生ぜず、表板２の外観性が損なわれな
い。 Plastic panel 1 configured as above
The plastic panel 1 is made by blow molding a polyphenylene ether resin that has excellent heat resistance, high bending strength, compressive strength, and impact strength. Since they are connected to each other on the intermediate line where the blowing ratio is relatively low, cracks do not occur even if there is a part of the peripheral side 4 where the blowing ratio is high, and the polyphenylene ether resin This makes it extremely superior in heat resistance and strength, taking advantage of its original properties. Moreover, the plastic panel 1 is
Since the back plate 3 and the front plate 2 are integrated by the interspersed ribs 7, the plate has high strength against loads in any direction. Moreover, since only the tops of the ribs 7 are welded to the top plate 2, the top plate 2 does not undergo deformation due to welding, that is, so-called sink marks or warpage, and the appearance of the top plate 2 is not impaired.
考案の効果
本考案は、前記のように、ポリフエニレンエー
テル系樹脂からなる表板と裏板とを所定の間隔で
対向させ、かつその周側縁を一体に溶着連接して
ブロー成形することにより中空板状に形成し、裏
板には中空部側に突出するリブを点在状に複数個
形成して、そのリブの頂部を表板に表板肉厚の５
〜55％の範囲で入り込むように溶着一体化して構
成したものであるから、周側面の接合部をブロー
比の高い周側面の稜線部を避けて亀裂が生じるの
を防止するとともに、さらに表板と裏板を表板の
外観性を損なうことなく一体化を図り、もつて、
耐熱性に優れ、高温においても高い剛性を保持
し、しかも曲げ強度、圧縮強度および衝撃強度に
優れたプラスチツクパネルを得ることができ、各
種機器のハウジング部材、家具部材、また自動車
部材等として用いることができる。Effects of the invention As described above, the present invention involves blow molding a top plate and a back plate made of polyphenylene ether resin facing each other at a predetermined interval, and welding and connecting their peripheral edges together. The back plate is formed into a hollow plate shape, and a plurality of ribs protruding toward the hollow part are formed on the back plate in a dotted manner, and the tops of the ribs are attached to the top plate with a thickness of 5 mm.
Since it is constructed by integrally welding so that it penetrates in the range of ~55%, it is possible to prevent cracks by avoiding the ridgeline of the peripheral side where the blow ratio is high at the joint on the circumferential side, and also to prevent the occurrence of cracks. The back plate is integrated with the top plate without spoiling its appearance.
It is possible to obtain a plastic panel that has excellent heat resistance, maintains high rigidity even at high temperatures, and has excellent bending strength, compressive strength, and impact strength, and can be used as housing components for various equipment, furniture components, automobile components, etc. I can do it.
図面は本考案の実施例を示し、第１図はプラス
チツクパネルの全体斜視図、第２図はその一部の
拡大断面図、第３図はプラスチツクパネルの他例
を示す全体斜視図である。
１……プラスチツクパネル、２……表板、３…
…裏板、４……周側面、５……中空部、６は溶着
接合部、７……リブ。
The drawings show an embodiment of the present invention; FIG. 1 is an overall perspective view of a plastic panel, FIG. 2 is an enlarged sectional view of a portion thereof, and FIG. 3 is an overall perspective view showing another example of the plastic panel. 1...Plastic panel, 2...Top plate, 3...
...Back plate, 4... Circumferential side, 5... Hollow part, 6 is welded joint, 7... Rib.
Claims (1)
裏板とを所定の間隔で対向させ、かつその周側縁
を一体に溶着連接してブロー成形することにより
中空板状に形成し、裏板には中空部側に突出する
リブを点在状に複数個形成して、そのリブの頂部
を表板に表板肉厚の５〜55％の範囲で入り込むよ
うに溶着一体化して構成したことを特徴とするプ
ラスチツクパネル。 A top plate and a back plate made of polyphenylene ether resin are placed opposite to each other at a predetermined interval, and their peripheral edges are welded and connected together to form a hollow plate shape. A feature is that a plurality of ribs protruding toward the hollow part are formed in a dotted manner, and the tops of the ribs are welded and integrated into the top plate so that they penetrate into the top plate within a range of 5 to 55% of the top plate wall thickness. plastic panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987148742U JPH0442101Y2 (en) | 1987-09-29 | 1987-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987148742U JPH0442101Y2 (en) | 1987-09-29 | 1987-09-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6452279U JPS6452279U (en) | 1989-03-31 |
| JPH0442101Y2 true JPH0442101Y2 (en) | 1992-10-05 |
Family
ID=31420334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987148742U Expired JPH0442101Y2 (en) | 1987-09-29 | 1987-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0442101Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2575281Y2 (en) * | 1989-08-22 | 1998-06-25 | キョーラク株式会社 | Printer device housing panel |
| JP4674451B2 (en) * | 2004-08-20 | 2011-04-20 | 富士ゼロックス株式会社 | Exterior cover |
| JP5216841B2 (en) * | 2010-12-02 | 2013-06-19 | 三菱エンジニアリングプラスチックス株式会社 | Hollow molded product |
| JP7345837B2 (en) * | 2019-12-06 | 2023-09-19 | 三甲株式会社 | Display plate support |
-
1987
- 1987-09-29 JP JP1987148742U patent/JPH0442101Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6452279U (en) | 1989-03-31 |
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