JPH0725343Y2 - Sheet-shaped cushioning material - Google Patents
Sheet-shaped cushioning materialInfo
- Publication number
- JPH0725343Y2 JPH0725343Y2 JP9655689U JP9655689U JPH0725343Y2 JP H0725343 Y2 JPH0725343 Y2 JP H0725343Y2 JP 9655689 U JP9655689 U JP 9655689U JP 9655689 U JP9655689 U JP 9655689U JP H0725343 Y2 JPH0725343 Y2 JP H0725343Y2
- Authority
- JP
- Japan
- Prior art keywords
- cushioning material
- sheet
- apparent
- present
- total thickness
- 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 - Fee Related
Links
Landscapes
- Buffer Packaging (AREA)
- Wrappers (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は発泡プラスチックよりなるシート状緩衝材に関
し、更に詳しくは包装作業時に取扱い易い包装用シート
状緩衝材に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a sheet-shaped cushioning material made of foamed plastic, and more particularly to a sheet-shaped cushioning material for packaging that is easy to handle during packaging work.
従来より、低密度ポリエチレンを主成分とする密度0.01
〜0.1kg/cm3、厚み0.5〜5mmの発泡プラスチックシート
が、特に表面に傷の付き易い品物の包装用緩衝材とし
て、広く利用されている。しかし、このような発泡プラ
スチックシートは、曲げに対する剛性が低いため包装作
業時にペラペラして扱いにくく、また表面が平滑すぎる
ため物品が横ずれし易いという欠点があった。Conventionally, a density of 0.01 as the main component of low-density polyethylene
A foamed plastic sheet having a thickness of 0.1 kg / cm 3 and a thickness of 0.5 to 5 mm is widely used as a cushioning material for packaging products whose surface is easily scratched. However, such a foamed plastic sheet has a drawback in that it has a low rigidity against bending and is difficult to handle due to flickering during the packaging work, and that the surface is too smooth and the article tends to be laterally displaced.
この対策として、シートの片面又は両面を波形状とした
発泡プラスチックシートも利用されている（実開昭52−
95780号公報）。ただ、このような波形状をなす発泡プ
ラスチックシートは、波の進行方向に対して90°の方向
については、曲げに対する剛性を向上させることができ
るが、波の進行方向については、むしろ曲げに対する剛
性を低下させることになるので、充分に要求を満すもの
ではなかった。As a countermeasure against this, a foamed plastic sheet having one or both sides of which is corrugated is also used (Actual Development Showa 52-
95780 publication). However, such a corrugated foamed plastic sheet can improve the rigidity against bending in the direction of 90 ° with respect to the direction of wave propagation, but rather the rigidity against bending in the direction of wave propagation. However, it did not satisfy the demand sufficiently.
そこで、優れた緩衝性と曲げに対する剛性を有する包装
用緩衝材として、二次加工によって波形状発泡プラスチ
ック同士を積層した緩衝材（実開昭56−123230号、実開
昭57−117365号各公報）、又はダンボールや発泡ポリス
チレンシート等の高い曲げに対する剛性を有する材料と
波形状発泡プラスチックシートとを積層した緩衝材（実
開昭58−143229号公報）などが用いられている。しか
し、このような緩衝材は、二次加工によって製造される
ため、コストが高いという欠点を有する。Therefore, as a cushioning material for packaging having excellent cushioning properties and rigidity against bending, a cushioning material in which corrugated foamed plastics are laminated by secondary processing (Japanese Utility Model Publication Nos. 56-123230 and 57-117365) ) Or a cushioning material (Japanese Utility Model Publication No. 58-143229) in which a corrugated foamed plastic sheet and a material having high rigidity against bending such as cardboard or expanded polystyrene sheet are laminated. However, since such a cushioning material is manufactured by secondary processing, it has a drawback of high cost.
本考案は、前記従来の包装用緩衝材に見られる欠点を克
服し、包装作業時に扱い易く、また品物が横ずれしな
い、安価に製造できる包装用緩衝材を提供することをそ
の課題とする。An object of the present invention is to provide a cushioning material for packaging which can overcome the drawbacks found in the conventional packaging cushioning material, is easy to handle during packaging work, and does not laterally shift the product, and which can be manufactured at low cost.
本考案によれば、高密度ポリエチレン、低密度ポリエチ
レン及びポリスチレン系樹脂の混合樹脂発泡体からなる
密度0.01〜0.05g/cm3のシート状緩衝材であって、しか
も該緩衝材はその断面の上側又は上下側が波形状であ
り、上下方向に全厚の25％圧縮したときの見かけの最大
圧縮弾性率が10〜200kgf/cm2を示すと共に見かけの曲げ
弾性率が１〜300kgf/cm2を示すことを特徴とするシート
状緩衝材が提供される。According to the present invention, high-density polyethylene, a sheet-like cushioning material density 0.01 to 0.05 g / cm 3 comprising a mixed resin foam of a low density polyethylene and polystyrene resins, moreover the buffer material upper cross section Or, the upper and lower sides are corrugated, and the apparent maximum compression elastic modulus when compressed by 25% of the total thickness in the vertical direction is 10 to 200 kgf / cm 2 and the apparent bending elastic modulus is 1 to 300 kgf / cm 2 . A sheet-shaped cushioning material is provided.
即ち、本考案のシート状緩衝材は、（ｉ）主成分が高密
度ポリエチレン、低密度ポリエチレン及びポリスチレン
系樹脂の混合物であり、（ii）密度が0.01〜0.05g/cm3
であり、（iii）上下方向における圧縮25％までの見か
けの最大圧縮弾性率が10〜200kgf/cm2を示し、（iv）見
かけの曲げ弾性率が１〜300kgf/cm2を示し、且つ（ｖ）
その断面の片面又は前面が波形状を示すという構成とし
たことから、好適な曲げに対する剛性によって、包装作
業時に扱い易く、また品物が横ずれしない、しかも安価
に製造できるものとなる。That is, the sheet-shaped cushioning material of the present invention is (i) a mixture of high-density polyethylene, low-density polyethylene and polystyrene resin as a main component, and (ii) a density of 0.01 to 0.05 g / cm 3.
And (iii) an apparent maximum compressive elastic modulus up to 25% of compression in the vertical direction is 10 to 200 kgf / cm 2 , (iv) an apparent bending elastic modulus is 1 to 300 kgf / cm 2 , and ( v)
Since one side or the front side of the cross section has a corrugated shape, the rigidity against suitable bending makes it easy to handle during the packaging operation, does not laterally shift the product, and can be manufactured at low cost.
ここで、本考案における見かけの圧縮弾性率とは、例え
ば第１図及び第２図に示されるシート状緩衝材の上下方
向で、最大長さを全厚として求めた値である。Here, the apparent compressive elastic modulus in the present invention is a value obtained by taking the maximum length as the total thickness in the vertical direction of the sheet-shaped cushioning material shown in FIGS. 1 and 2, for example.
また、見かけの曲げ弾性率とは、次式により求めた値で
ある。The apparent flexural modulus is a value calculated by the following equation.
但し、上式中各記号は以下のことを表わす。 However, each symbol in the above formula represents the following.
L:支点間距離〔cm〕 b:試験片の幅〔cm〕 h:試験片の全厚〔cm〕 F:荷重直線部分の任意に選んだ点の荷重〔kgf〕 Y:荷重下におけるたわみ〔cm〕 本考案における高密度ポリエチレンとは、常温常圧にお
ける密度が0.941〜0.970g/cm3であるエチレンを主体と
する重合体であって、酢酸ビニル、メタアクリレート、
アクリレートあるいはプロピレンその他のエチレンと共
重合し得るビニル系単量体との共重合体も含まれる。L: Distance between fulcrums [cm] b: Width of test piece [cm] h: Total thickness of test piece [cm] F: Load at arbitrarily selected point on load linear part [kgf] Y: Deflection under load [ cm) High-density polyethylene in the present invention is a polymer mainly composed of ethylene having a density of 0.941 to 0.970 g / cm 3 at room temperature and atmospheric pressure, such as vinyl acetate, methacrylate,
A copolymer with a vinyl-based monomer copolymerizable with acrylate or propylene or other ethylene is also included.
本考案における低密度ポリエチレンとは、常温常圧にお
ける密度が0.910〜0.930g/cm3であるエチレンを主体と
する重合体であって、前記した如きエチレンと共重合し
得る各種のビニル系単量体との共重合体も含まれる。The low-density polyethylene in the present invention is a polymer mainly composed of ethylene having a density of 0.910 to 0.930 g / cm 3 at room temperature and atmospheric pressure, and various vinyl-based monomers which can be copolymerized with ethylene as described above. Copolymers with the body are also included.
本考案におけるポリスチレン系樹脂とは、スチレンを主
体とする重合体で、スチレン単独重合体及びその他のス
チレンと共重合し得るビニル系単量体との共重合体、更
には一般に耐衝撃性ポリスチレン樹脂と呼ばれているポ
リスチレンを主体とするゴム系ポリマーとの共重合物又
は混合物、あるいは、ジエン系単量体との共重合体も本
考案のポリエチレン系樹脂の範囲に含まれるものであ
る。なお、本考案において、ポリスチレン系樹脂とし
て、耐衝撃性ポリスチレン樹脂を使用した場合には、得
られる発泡体の柔軟性、弾性を向上させることができ
る。The polystyrene resin in the present invention is a polymer mainly composed of styrene, a homopolymer of styrene and a copolymer of a vinyl monomer copolymerizable with other styrene, and further, a high impact polystyrene resin in general. A copolymer or mixture with a rubber-based polymer having polystyrene as a main component, or a copolymer with a diene-based monomer is also included in the scope of the polyethylene-based resin of the present invention. In the present invention, when a high impact polystyrene resin is used as the polystyrene resin, the flexibility and elasticity of the obtained foam can be improved.
本考案においては、発泡体の密度は0.01〜0.05g/cm3の
範囲である。密度が0.05g/cm3を越えると、かたすぎて
緩衝材としての充分な緩衝能力を持てず、逆に0.01g/cm
3未満では、やわらかすぎてやはり充分な緩衝能力を持
たないものとなる。In the present invention, the density of the foam is in the range of 0.01-0.05 g / cm 3 . When the density exceeds 0.05 g / cm 3 , it is too hard to have a sufficient cushioning capacity as a cushioning material, and conversely 0.01 g / cm 3.
If it is less than 3, it is too soft and does not have sufficient buffering ability.
本考案の緩衝材は、上下方向に全厚の25％圧縮したとき
の見かけの最大圧縮弾性率が10〜200kgf/cm2を示すと共
に、見かけの曲げ弾性率が１〜300kgf/cm2を示すことを
特徴とする。見かけの最大圧縮弾性率が10kgf/cm2未満
ではやわらかすぎ、逆に200kgf/cm2を越えるとかたすぎ
て、何れの場合にも緩衝材としての充分な緩衝能力を持
たなくなる。また、見かけの曲げ弾性率は、本考案の緩
衝材の場合、畝方向に５〜300kgf/cm2、畝方向に対して
水平に直交する方向には１〜295kgf/cm2を示し、見かけ
の曲げ弾性率が1kgf/cm2未満では、包装作業時にペラペ
ラして扱いにくく、逆に300kgf/cm2を越えると、かたす
ぎて緩衝材として不適当である。The cushioning material of the present invention exhibits an apparent maximum compressive elastic modulus of 10 to 200 kgf / cm 2 and an apparent bending elastic modulus of 1 to 300 kgf / cm 2 when compressed by 25% of the total thickness in the vertical direction. It is characterized by Maximum compressive modulus of apparent too soft is less than 10 kgf / cm 2, conversely excessively hardness exceeds 200 kgf / cm 2, even not have sufficient buffering capacity as a buffer material in either case. Further, the flexural modulus of the apparent, when the cushioning material of the present invention, 5~300kgf / cm 2 in the ridge direction, in the direction perpendicular to the horizontal with respect to the ridge direction indicates 1~295kgf / cm 2, the apparent the flexural modulus is less than 1 kgf / cm 2, cumbersome and fluent during packaging operations and conversely exceeds 300 kgf / cm 2, is unsuitable as a cushioning material Te Katasugi.
また、本考案の緩衝材は、その断面の上側又は上下側が
波形状を有する。本考案の形状について図面に沿って説
明すると、第１図及び第２図は本考案の緩衝材の波形表
面の説明図であって、夫々上側及び上下側表面が波形状
となっている。この波形は、第１図及び第２図で示され
ているような正弦波状のものに限られるわけではなく、
第３図に示されるような矩形波状、第４図に示されるよ
うな半円の繰返し、あるいは第５図に示されるような三
角形波状等であってもよい。Further, the cushioning material of the present invention has a corrugated shape on the upper or lower side of its cross section. The shape of the present invention will be described with reference to the drawings. FIGS. 1 and 2 are explanatory views of the corrugated surface of the cushioning material of the present invention, in which the upper and lower surfaces are respectively corrugated. The waveform is not limited to the sinusoidal waveform as shown in FIGS. 1 and 2,
It may have a rectangular wave shape as shown in FIG. 3, a repeating semicircle as shown in FIG. 4, or a triangular wave shape as shown in FIG.
更に、本考案の緩衝材は、その全厚が５〜20mmの範囲で
あることが好ましい。全厚が5mm未満では充分な曲げに
対する剛性を持たせることが困難であり、逆に20mmを越
えるものは製造が困難となる。また、本考案の緩衝材
は、その波の高さが全厚の２〜20％であることが好まし
い。20％を越えると、表面に傷の付き易い品物（梨、桃
等）の場合、傷を付けるおそれがあり、２％未満では摩
れ防止の効果が期待できない。なお、ここで言う緩衝材
の全厚及び波の高さとは、第１図及び第２図に示されて
いる長さを意味する。Further, the cushioning material of the present invention preferably has a total thickness in the range of 5 to 20 mm. If the total thickness is less than 5 mm, it is difficult to give sufficient rigidity to bending, and conversely, if it exceeds 20 mm, manufacturing becomes difficult. Further, the cushioning material of the present invention preferably has a wave height of 2 to 20% of the total thickness. If it exceeds 20%, the surface of the product (pears, peaches, etc.) that is easily scratched may be scratched, and if it is less than 2%, the effect of preventing abrasion cannot be expected. The total thickness of the cushioning material and the height of the waves referred to here mean the lengths shown in FIGS. 1 and 2.
本考案のシート状緩衝材は、慣用の押出発泡成形機を用
いて製造することができる。即ち、押出機の加圧シリン
ダー内において混合樹脂と発泡剤とを溶融混練し、この
混練物を押出機のサーキュラダイから管状に大気中に押
出すことによって得られる。該緩衝剤の断面の上側又は
上下側を波形状にするには、例えば特開昭53−39369号
公報に示されているように、マンドレル、内部ダイ及び
外部ダイからなるサーキュラダイと押出機本体からなる
合成樹脂発泡体の製造装置を用いて、内部ダイの表面及
び（又は）外部ダイの内面に複数の溝を設けてなるサー
キュラダイから、押出された管状発泡体を切開するか、
又は得られた管状発泡体をその内面が未だ溶融状態にあ
る間にピンチロールで挾圧して内面を融着させることに
よって、行なわれる。The sheet-shaped cushioning material of the present invention can be manufactured using a conventional extrusion foam molding machine. That is, it can be obtained by melt-kneading a mixed resin and a foaming agent in a pressure cylinder of an extruder, and extruding the kneaded product into a tube from a circular die of the extruder into the atmosphere. To make the upper or lower side of the cross section of the buffer into a wavy shape, for example, as shown in JP-A-53-39369, a circular die including a mandrel, an inner die and an outer die and an extruder main body. Using a synthetic resin foam manufacturing apparatus consisting of, from the circular die provided with a plurality of grooves on the surface of the inner die and (or) the inner surface of the outer die, or to cut out the extruded tubular foam,
Alternatively, it is carried out by pinching the obtained tubular foam with a pinch roll to fuse the inner surface while the inner surface is still in a molten state.
本考案のシート状緩衝材は、前記構成としたことから、
好適な曲げに対する剛性によって、包装作業時に扱い易
く、また品物が横ずれしない包装用緩衝材として利用さ
れる。Since the sheet-shaped cushioning material of the present invention has the above-mentioned configuration,
Due to its suitable rigidity against bending, it can be easily handled during the packaging operation and can be used as a cushioning material for packaging in which the product is not laterally displaced.
次に、本考案を実施例により更に詳細しに説明する。 Next, the present invention will be described in more detail by way of examples.
実施例１〜２ 密度0.958g/cm3、MFR0.3g/10minの高密度ポリスチレン
（HDPE）、密度0.923g/cm3、MFR0.26g/10minの低密度ポ
リエチレン（LDPE）及び密度1.05g/cm3、MFR20g/10min
のポリスチレン樹脂（PS）を重量比1:1:1の割合で用い
ると共に、この混合樹脂100重量部に収縮防止剤として
モノステアリング酸グリセライド1.0重量部を配合し、
この配合物と発泡剤とを押出機中で溶融混練した後、押
出機先端の外部リングに溝を設けたサーキュラーダイか
ら大気圧下に押出してバルーンを形成させ、ロール間を
通して、バルーン内面を圧着させて、第６図に示すシー
ト状緩衝材を得た。Examples 1-2 density 0.958 g / cm 3, high density polystyrene MFR0.3g / 10min (HDPE), density 0.923 g / cm 3, low density polyethylene MFR0.26g / 10min (LDPE) and density 1.05 g / cm 3 , MFR 20g / 10min
Polystyrene resin (PS) is used in a weight ratio of 1: 1: 1 and 100 parts by weight of this mixed resin is mixed with 1.0 part by weight of monosteering acid glyceride as a shrinkage inhibitor,
After melt-kneading this composition and a foaming agent in an extruder, a circular die having grooves on the outer ring at the end of the extruder is extruded under atmospheric pressure to form a balloon, which is passed between rolls and the inner surface of the balloon is crimped. Then, the sheet-shaped cushioning material shown in FIG. 6 was obtained.
なお、上記MFRとはJIS K 7210により測定した値であ
り、ポリエチレン系樹脂に対しては試験条件、ポリスチ
レン系樹脂に対しては試験条件８を採用した。The MFR is a value measured according to JIS K 7210, and the test condition was adopted for polyethylene resin and the test condition 8 was adopted for polystyrene resin.
実施例３ 実施例１〜２と同様に押出機で押出し機、マンドレルを
通しバルーンを切り開くことにより、第７図に示すシー
ト状緩衝材を得た。Example 3 In the same manner as in Examples 1 and 2, the sheet-shaped cushioning material shown in FIG. 7 was obtained by cutting the balloon through the extruder and mandrel using an extruder.
以上のようにして得られたシート状緩衝材について、そ
の７日後の常温における密度と全厚を測定すると共に、
５×5cmのサンプルを上下方向に圧縮速度1cm/minで全厚
の25％圧縮し、見かけの最大圧縮弾性率を測定した。ま
た、見かけの曲げ弾性率を前述した（Ｉ）式を用いて測
定した。なお、その際、式中Ｌ＝10cm、ｂ＝2.5cmの値
とし、h,F,Yについては測定結果と共に第１表に示す。For the sheet-shaped cushioning material obtained as described above, the density and the total thickness at room temperature after 7 days were measured,
A 5 × 5 cm sample was vertically compressed at a compression rate of 1 cm / min by 25% of the total thickness, and the apparent maximum compressive elastic modulus was measured. Further, the apparent flexural modulus was measured using the above-mentioned formula (I). At that time, L = 10 cm and b = 2.5 cm in the formula, and h, F, and Y are shown in Table 1 together with the measurement results.
比較例１ 第８図に示すダンボールにおいて、実施例と同様に見か
けの最大圧縮弾性率と見かけの曲げ弾性率とを測定し
た。その結果を第１表に示す。Comparative Example 1 In the cardboard shown in FIG. 8, the apparent maximum compression elastic modulus and the apparent bending elastic modulus were measured in the same manner as in the examples. The results are shown in Table 1.
比較例２ 第９図に示すLDPE発泡体において、実施例と同様に見か
けの最大圧縮弾性率と見かけの曲げ弾性率とを測定し
た。その結果を第１表に示す。Comparative Example 2 In the LDPE foam shown in FIG. 9, the apparent maximum compression elastic modulus and the apparent bending elastic modulus were measured as in the examples. The results are shown in Table 1.
比較例３ 第10図に示す発泡ポリスチレンシートの両面に波形状LD
PE発泡シートを積層したものにおいて、実施例と同様に
見かけの最大圧縮弾性率と見かけの曲げ弾性率とを測定
した。その結果を第１表に示す。Comparative Example 3 The corrugated LD is formed on both sides of the expanded polystyrene sheet shown in FIG.
In the laminated PE foam sheets, the apparent maximum compression elastic modulus and the apparent bending elastic modulus were measured in the same manner as in the examples. The results are shown in Table 1.
第１図は上側表面が波形状となっている本考案の緩衝材
の波形表面の説明図であり、また第２図は上下側表面が
波形状となっている本考案の緩衝材の波形表面の説明図
である。 また、第３〜５図は本考案の緩衝材の別の波形例を示す
波形表面の説明図である。 更に、第６図及び第７図は、夫々実施例１〜２及び実施
例３で得られた本考案の緩衝材の波形表面の説明図であ
り、また第８〜10図は従来品を示す説明図である。FIG. 1 is an explanatory view of the corrugated surface of the cushioning material of the present invention in which the upper surface is corrugated, and FIG. 2 is the corrugated surface of the cushioning material of the present invention in which the upper and lower surfaces are corrugated. FIG. 3 to 5 are explanatory views of a corrugated surface showing another corrugated example of the cushioning material of the present invention. 6 and 7 are explanatory views of the corrugated surface of the cushioning material of the present invention obtained in Examples 1 and 2 and Example 3, respectively, and FIGS. 8 to 10 show conventional products. FIG.
Claims (2)
及びポリスチレン系樹脂の混合樹脂発泡体からなる密度
0.01〜0.05g/cm3のシート状緩衝材であって、しかも該
緩衝材はその断面の上側又は上下側が波形状であり、上
下方向に全厚の25％圧縮したときの見かけの最大圧縮弾
性率が10〜200kgf/cm2を示すと共に見かけの曲げ弾性率
が１〜300kgf/cm2を示すことを特徴とするシート状緩衝
材。1. A density comprising a mixed resin foam of high density polyethylene, low density polyethylene and polystyrene resin.
0.01 to 0.05 g / cm 3 sheet-shaped cushioning material, and the cushioning material has a corrugated upper or lower side of its cross section, and the apparent maximum compression elasticity when compressed by 25% of the total thickness in the vertical direction. A sheet-shaped cushioning material having a modulus of 10 to 200 kgf / cm 2 and an apparent flexural modulus of 1 to 300 kgf / cm 2 .
あり且つ波の高さが全厚の２〜20％であることを特徴と
するシート状緩衝材。2. The sheet-shaped cushioning material according to claim 1, wherein the total thickness is 5 to 20 mm and the wave height is 2 to 20% of the total thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9655689U JPH0725343Y2 (en) | 1989-08-18 | 1989-08-18 | Sheet-shaped cushioning material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9655689U JPH0725343Y2 (en) | 1989-08-18 | 1989-08-18 | Sheet-shaped cushioning material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0335072U JPH0335072U (en) | 1991-04-05 |
| JPH0725343Y2 true JPH0725343Y2 (en) | 1995-06-07 |
Family
ID=31645752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9655689U Expired - Fee Related JPH0725343Y2 (en) | 1989-08-18 | 1989-08-18 | Sheet-shaped cushioning material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0725343Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008100733A (en) * | 2006-10-19 | 2008-05-01 | Shin Etsu Chem Co Ltd | Shock absorber for pellicle packing and packing method |
| JP2015129013A (en) * | 2014-01-09 | 2015-07-16 | 株式会社ジェイエスピー | Paper |
-
1989
- 1989-08-18 JP JP9655689U patent/JPH0725343Y2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008100733A (en) * | 2006-10-19 | 2008-05-01 | Shin Etsu Chem Co Ltd | Shock absorber for pellicle packing and packing method |
| JP2015129013A (en) * | 2014-01-09 | 2015-07-16 | 株式会社ジェイエスピー | Paper |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0335072U (en) | 1991-04-05 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |