JPH0343123B2 - - Google Patents
Info
- Publication number
- JPH0343123B2 JPH0343123B2 JP59145417A JP14541784A JPH0343123B2 JP H0343123 B2 JPH0343123 B2 JP H0343123B2 JP 59145417 A JP59145417 A JP 59145417A JP 14541784 A JP14541784 A JP 14541784A JP H0343123 B2 JPH0343123 B2 JP H0343123B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- flexible elastic
- sealers
- horizontal
- rolls
- 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 - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000006096 absorbing agent Substances 0.000 claims 1
- 230000035939 shock Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 229920006328 Styrofoam Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
- B31D5/00—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles
- B31D5/0039—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads
- B31D5/0073—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads including pillow forming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
- B31D2205/00—Multiple-step processes for making three-dimensional articles
- B31D2205/0005—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads
- B31D2205/0011—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads including particular additional operations
- B31D2205/0017—Providing stock material in a particular form
- B31D2205/0023—Providing stock material in a particular form as web from a roll
Landscapes
- Containers And Plastic Fillers For Packaging (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はプラスチツクフイルムよりなる緩衝体
製造装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for manufacturing a cushioning body made of plastic film.
従来は物品の梱包時に物品と容器間に詰める緩
衝材は細断された新聞紙あるいは細長いプラスチ
ツク発泡スチロール材等であつた。
Conventionally, the cushioning material packed between the product and the container when packaging the product has been shredded newspaper or elongated plastic Styrofoam material.
しかしこれらはその開包時に周囲に飛散して汚
染するばかりでなく、その運搬時に摩擦で発電
し、支障を来たした。
However, not only did these particles scatter and contaminate the surrounding area when they were opened, but they also generated electricity due to friction during transportation, causing problems.
このためプラスチツクフイルムを空袋にして緩
衝体とするもとが提案された。本発明はかかる緩
衝体を連続自動的に製造することを目的とするも
ので、ロール状に巻かれたフイルムを三角錐状の
連続密封空袋に作る装置を提供するものである。 For this reason, it was proposed to use empty plastic film bags as a cushioning material. The object of the present invention is to continuously and automatically manufacture such a buffer body, and provides an apparatus for forming a continuous sealed empty bag in the shape of a triangular pyramid from a rolled film.
本発明は上記の課題を解決するためになされた
もので、フイルム１を筒状に整形するフオーマ６
と、このイフイルム１の両側端合せ部をシールす
るフインシールロール１５と、このフインシール
ロール１５の前方に設けたフイルム１の両側部を
圧接挟持して２つ折りにする互いに反転する一対
の柔軟弾性体ロール２０と、この柔軟弾性体ロー
ル２０より前側のフイルム１内にこの柔軟弾性体
ロール２０の圧接部及びフイルム１内を貫通して
冷えた圧縮空気を送るパイプ２４と、この柔軟弾
性体ロール２０より前方に順次設けた横シーラ３
０と、その横シーラ３０の向きに対し直交する縦
シーラ３２とよりなり、前方のシーラがシールし
た直後に後方のシーラがシールしてフイルム１を
三角錐状の連続密封空袋Ａ……にシールすること
を特徴とする緩衝体製造装置である。
The present invention has been made to solve the above problems, and includes a former 6 for shaping the film 1 into a cylindrical shape.
, a fine seal roll 15 that seals the joining portions of both ends of the film 1, and a pair of flexible elastic rollers provided in front of the fine seal roll 15 that are reversible to each other to press and hold both sides of the film 1 and fold it in half. A body roll 20, a pipe 24 that passes through the pressure contact portion of the flexible elastic roll 20 and the inside of the film 1 and sends cooled compressed air into the film 1 on the front side of the flexible elastic roll 20, and the flexible elastic roll 20. Horizontal sealer 3 provided sequentially in front of 20
0 and a vertical sealer 32 perpendicular to the direction of the horizontal sealer 30, and immediately after the front sealer seals, the rear sealer seals the film 1 into a triangular pyramid-shaped continuous sealed empty bag A... This is a cushioning body manufacturing apparatus characterized by sealing.
フイルム１はフイードロール３，４により巻き
ほぐされフオーマ６で筒状に整形され、その筒状
のフイルム１はフインシールロール１５，１５で
挟着されて完全にシールされる。
The film 1 is unwound by feed rolls 3 and 4 and shaped into a cylindrical shape by a former 6, and the cylindrical film 1 is sandwiched between fin seal rolls 15 and 15 to be completely sealed.
次にこの筒状のフイルム１は両側から柔軟弾性
体ロール２０，２０ではさみつけられ、２つ折さ
れたフイルム１の中にあるパイプ２４は外気より
よく冷えた圧縮空気を柔軟弾性体ロール２０，２
０より前側の２つ折りになつたフイルム１内に送
つている。膨らんだ筒状フイルム１の先端はまず
縦シーラ３２，３３で完全にシールされ、次に横
シーラ３０，３０でシールされると共にそれぞれ
のシール部１ａにミシン目１ｂが入れられ、連続
した三角錐状の密封空袋Ａ……になる。 Next, this cylindrical film 1 is sandwiched between flexible elastic rolls 20, 20 from both sides, and a pipe 24 inside the folded film 1 supplies compressed air that is cooler than the outside air to the flexible elastic rolls 20, 20. 2
The film is fed into the folded film 1 on the front side of 0. The tip of the swollen cylindrical film 1 is first completely sealed with vertical sealers 32 and 33, then sealed with horizontal sealers 30 and 30, and a perforation 1b is made in each seal portion 1a, forming a continuous triangular pyramid. It becomes a sealed empty bag A...
以下図面につき本発明の一実施例を詳細に説明
する。
An embodiment of the present invention will be described in detail below with reference to the drawings.
第１，２図示のように水平方向に走行するフイ
ルム１はその案内ロール２よりフイードロール
３，４、案内ロール５を介してフイルム１を筒状
に整形するフオーマ６に誘導する。 As shown in the first and second figures, the film 1 traveling in the horizontal direction is guided by its guide roll 2 via feed rolls 3, 4 and a guide roll 5 to a former 6 which shapes the film 1 into a cylindrical shape.
このフオーマ６はフイルム１を上方に案内する
上端が台板をなす垂直板７と、このフイルム１の
両端を上方に折曲げるため垂直板７の上端より前
方に延びる三角形状の折上板８，８と、この折上
板８，８間において前方に延びるフイルム１の下
面を受ける板９とよりなる。 This former 6 includes a vertical plate 7 whose upper end serves as a base plate for guiding the film 1 upward, a triangular folding plate 8 extending forward from the upper end of the vertical plate 7 for bending both ends of the film 1 upward; 8, and a plate 9 which extends forward between the folding plates 8 and 8 and receives the lower surface of the film 1.
第２図示のように、上記垂直板７の後方にはフ
イルム１の所定量送られる毎に切れ目を入れるた
めのカツタ１０をソレノイド１１により前後動す
べく設け、このカツタ１０はスプリング１２によ
り後方に弾撥する共にソレノイド１１に電流が流
れたときのみ前方に作動し、このソレノイド１１
の電流は図示しない積算カウンタにより制御す
る。 As shown in the second figure, a cutter 10 is provided at the rear of the vertical plate 7 to make a cut each time the film 1 is fed by a predetermined amount, and is moved back and forth by a solenoid 11. The solenoid 11 operates forward only when current flows through the solenoid 11.
The current is controlled by an integration counter (not shown).
上記フオーマ６の前上方には前方に向かつてフ
イルム１の両側縁を挟持し以て前方に引張る引張
りロール１３，１３、余熱バー１４，１４及びフ
インシートロール１５，１５を順次設ける。 At the upper front of the former 6, tension rolls 13, 13, preheating bars 14, 14, and fin sheet rolls 15, 15, which face forward and pinch both side edges of the film 1 and pull it forward, are sequentially provided.
上記フインシールロール１５，１５の前方には
２つ折りされたフイルムに形成するためにフイル
ム１の両側部を挟持する一対の例えばスポンジ、
ゴム、ゴムチユーブのような柔軟弾性体ロール２
０，２０を垂直軸２１，２１により回転すべく枢
着する。コンプレツサー（図示せず）に連結した
導管２２は空気を冷却する（好ましくは梱包時の
外気温より約20℃低くする）超低温発生器２３を
介して前方に延びるパイプ２４に連結し、このパ
イプ２４は筒状のフイルム１内を通り、更に２つ
折りするために前方に設けた上記柔軟弾性体ロー
ル２０，２０間を通過させ、その前側で開口せし
める。このパイプ２４の開口部近辺には圧力検出
器２５と温度検出器２６設ける。 In front of the fin seal rolls 15, 15, there is a pair of sponges, for example, for holding both sides of the film 1 in order to form the film into two folds.
Flexible elastic roll 2 such as rubber or rubber tube
0 and 20 are pivotally mounted for rotation by vertical shafts 21 and 21. A conduit 22 connected to a compressor (not shown) connects to a forwardly extending pipe 24 via a cryogenic generator 23 that cools the air (preferably to about 20 degrees Celsius below the ambient temperature at the time of packaging). passes through the cylindrical film 1, and then passes between the flexible elastic rolls 20, 20 provided at the front for folding in two, and is opened at the front side. A pressure detector 25 and a temperature detector 26 are provided near the opening of this pipe 24.
上記柔軟弾性体ロール２０，２０の前方には、
ミシン目カツタ付の水平な横シーラ３０，３０を
回転可能な水平軸３１，３１に固着し、さらに、
その前方にはミシン目カツタ付の上記横シーラ３
０，３０の向きに対して上下に直交した垂直な縦
シーラ３２，３２を回動可能な垂直軸３３，３３
に固着する。この前方には排出コンベヤー３４、
シユート３５を設ける。 In front of the flexible elastic rolls 20, 20,
Horizontal horizontal sealers 30, 30 with perforated cutters are fixed to rotatable horizontal shafts 31, 31, and further,
In front of it is the above-mentioned horizontal sealer 3 with a perforated cutter.
Vertical shafts 33, 33 capable of rotating vertical vertical sealers 32, 32 vertically perpendicular to the directions of 0, 30;
sticks to. In front of this is a discharge conveyor 34,
A chute 35 is provided.
上記横シーラ３０，３０と縦シーラ３２，３２
がシールする夫々の時期t1、t2は時期t2の方が時
期t1よりも僅か先になるようにする。なお、t3は
フイルムをワンシヨツト（１ピツチ）送る時間で
ある。 The above horizontal sealers 30, 30 and vertical sealers 32, 32
The respective times t 1 and t 2 for sealing are set so that the time t 2 is slightly earlier than the time t 1 . Note that t3 is the time for feeding the film one shot (one pitch).
次にこの装置の動作を説明する。 Next, the operation of this device will be explained.
フイルム１はフイードロール３，４により巻き
ほぐされフオーマ６で筒状に整形され、その筒状
に成形されたフイルム１の両端合せ部は余熱バー
１４，１４で加熱されフインシールロール１５，
１５で完全にシールされる。かくして筒状になつ
たフイルム１内にはパイプ２４が挿入されてい
る。この筒状のフイルム１は両側から柔軟弾性体
ロール２０，２０ではさみつられ２つ折りにされ
る。この柔軟弾性体ロール２０，２０はフイルム
１の送りより少し速く回転し、筒状フイルム１を
たるませないように送つている。筒状フイルム１
中にあるパイプ２４は外気よりよく冷えた圧縮空
気を柔軟弾性体ロール２０，２０より前側の２つ
折されたフイルム１内に送つている。柔軟弾性体
ロール２０，２０はこの空気が逃げないようにす
る役目もしている。よく膨らんだ筒状フイルム１
の先端をまず縦シーラ３２，３２で完全にシール
し、次に横シーラ３０，３０でシールすると共に
それぞれシール部１ａにミシン目１ｂを入れ、こ
のように縦のシールと横のシールを交互にするこ
とにより連続した三角錐状の密封空袋Ａ……を作
ることができ、排出コンベヤー３４、シユート３
５より機械外に出されるものである。 The film 1 is unrolled by feed rolls 3 and 4 and shaped into a cylinder by a former 6. Both ends of the film 1 formed into a cylinder are heated by preheating bars 14 and fin seal rolls 15,
Completely sealed at 15. A pipe 24 is inserted into the film 1 which has thus become cylindrical. This cylindrical film 1 is sandwiched between flexible elastic rolls 20, 20 from both sides and folded into two. The flexible elastic rolls 20, 20 rotate a little faster than the feeding of the film 1, and feed the cylindrical film 1 so as not to slacken. Tubular film 1
A pipe 24 inside sends compressed air that is cooler than the outside air into the film 1 which is folded in two on the front side of the flexible elastic rolls 20, 20. The flexible elastic rolls 20, 20 also serve to prevent this air from escaping. Well-expanded cylindrical film 1
First, the tips of the sealers are completely sealed with the vertical sealers 32, 32, and then are sealed with the horizontal sealers 30, 30, and a perforation 1b is made in each sealing part 1a, and in this way, the vertical seal and the horizontal seal are alternately applied. By doing so, continuous triangular pyramid-shaped sealed empty bags A can be made, and the discharge conveyor 34 and the chute 3
5, it is taken out of the machine.
上記フイルム１が所定数量送られる度毎にソレ
ノイド１１に電流が流れてカツタ１０が作動し、
フイルム１に切れ目を入れる。したがつて上記連
続した密封空袋Ａ……を構成する密封空袋の所定
数個毎に空袋Ａが破れて潰れているので、空袋Ａ
……の積算に便利である。 Every time a predetermined amount of the film 1 is fed, a current flows through the solenoid 11 and the cutter 10 is activated.
Make a cut in film 1. Therefore, every predetermined number of sealed empty bags constituting the above-mentioned continuous sealed empty bags A are torn and crushed, so the empty bags A
It is convenient for calculating...
この実施例については理解し易くするためにフ
イルムの送り方向を水平状態で示したが、これは
一実施例に過ぎず、本発明は水平方向に限られる
ものではなく、垂直方向でも斜め方向でもよい。 In this embodiment, the film feeding direction is shown in a horizontal state for ease of understanding, but this is only one example, and the present invention is not limited to the horizontal direction, but can also be carried out vertically or diagonally. good.
以上のようにして、本発明により三角錐状の連
続密封空袋よりなる緩衝体を自動連続的に製造す
ることができるものであるが、本発明において
は、２つ折りにされたフイルムの両外側面部と、
そのフイルム内を貫通して冷えた圧縮空気を送る
パイプと、そのフイルムと冷えた圧縮空気を送る
パイプを共に圧接挟持して互いに反転する１対の
柔軟弾性体ロールとにより、各空袋内には冷却さ
れた圧縮空気が封入され、またその際フイルムは
一対の柔軟弾性体ロールにより圧接挟持されるの
でフイルムの厚薄及びパイプの径の大小又はそれ
等の組み合わせにかかわらず、自由に空袋外への
冷えた圧縮空気の逆流を阻止できるものである。
また封入されている冷えた圧縮空気は常温時には
膨脹し、袋の張りがよいので緩衝効率がよいもの
である。また、本願そのものにおいては冷却圧縮
空気の逆流が阻止されているので、フインシール
ロールの熱を全く奪うことなく、効果的なフイン
シールができるものである。
As described above, according to the present invention, it is possible to automatically and continuously manufacture a buffer body consisting of triangular pyramid-shaped continuous sealed empty bags. A face part,
A pipe that passes through the film and sends cold compressed air, and a pair of flexible elastic rolls that press and hold the film and the pipe that sends the cold compressed air and reverse each other, are used to fill each empty bag. is filled with cooled compressed air, and the film is held under pressure by a pair of flexible elastic rolls, so it can be freely moved out of the empty bag regardless of the thickness of the film, the diameter of the pipe, or any combination thereof. This prevents cold compressed air from flowing back into the air.
Furthermore, the enclosed cold compressed air expands at room temperature, and the bag has good tension, resulting in good buffering efficiency. Further, in the present application itself, since the backflow of the cooling compressed air is prevented, effective fin sealing can be performed without taking away any heat from the fin seal roll.
また本発明は前方のシーラがシールした直後に
後方のシーラが、前記の一対の柔軟弾性体のフイ
ルム挟着と相俟つてシールしているので、後方の
シール時に空気が脱出することがなく、正確にフ
イルムを三角錐状の連続密封空袋にシールするこ
とができるものである。 Further, in the present invention, immediately after the front sealer seals, the rear sealer seals together with the film sandwiched between the pair of flexible elastic bodies, so that air does not escape during rear sealing. It is possible to accurately seal a film into a triangular pyramid-shaped continuous sealed empty bag.
上記実施例では横シーラ３０，３０と縦シーラ
３２，３２は回転式にしているが、これらはデユ
エルカムを利用したシーラにすればより高速に運
転することが、出来る。 In the above embodiment, the horizontal sealers 30, 30 and the vertical sealers 32, 32 are rotary type, but these can be operated at higher speeds by using sealers that utilize a duel cam.
また、シーラの縦横関係は自由に交換しうるも
のである。 Further, the vertical and horizontal relationship of the sealer can be freely changed.
第１図イは本発明の実施例の要部の概要を示す
斜視図、ロは本発明により製造した緩衝体の斜視
図、ハは横シールと縦シールとのシール時期と時
間を示すタイミングチヤート、第２図はその側面
図、第３図はその平面図、第４図はその端面図で
ある。
１……フイルム、６……フオーマ、１５，１５
……フインシールロール、２０，２０……柔軟弾
性体ロール、２４……パイプ、３０，３０……横
シール、３２，３２……縦シール、Ａ……密封空
袋。
FIG. 1A is a perspective view showing an overview of the main parts of an embodiment of the present invention, B is a perspective view of a buffer body manufactured according to the present invention, and C is a timing chart showing the timing and time of sealing the horizontal seal and the vertical seal. , FIG. 2 is a side view thereof, FIG. 3 is a plan view thereof, and FIG. 4 is an end view thereof. 1...Film, 6...Forma, 15,15
... Fine seal roll, 20, 20 ... Flexible elastic roll, 24 ... Pipe, 30, 30 ... Horizontal seal, 32, 32 ... Vertical seal, A ... Sealed empty bag.
Claims (1)
フイルムの両側端合せ部をシールするフインシー
ルロールと、このフインシールロールの前方に設
けたフイルムの両側部を圧接挟持して２つ折にす
る互いに反転する一対の柔軟弾性体ロールと、こ
の柔軟弾性体ロールより前側のフイルム内にこの
柔軟弾性体ロールの圧接部及びフイルム内を貫通
して圧縮冷気を送るパイプと、この柔軟弾性体ロ
ールより前方に順次設けた横シーラと、その横シ
ーラの向きに対し直交する縦シーラとよりなり、
前方のシーラがシールした直後に後方のシーラが
シールしてフイルムを三角錐状の連続密封空袋に
シールすることを特徴とする緩衝体製造装置。1. A former that shapes the film into a cylindrical shape, a fin seal roll that seals both ends of the film, and a fin seal roll provided in front of the fin seal roll that presses and clamps both sides of the film and folds it in half. a pair of flexible elastic rolls, a pipe for sending compressed cold air through the pressure contact part of the flexible elastic rolls and the inside of the film, and a pipe for sending compressed cold air in front of the flexible elastic rolls; Consisting of horizontal sealers provided in sequence and vertical sealers perpendicular to the direction of the horizontal sealers,
A shock absorber manufacturing apparatus characterized in that immediately after a front sealer seals, a rear sealer seals the film to seal the film into a triangular pyramid-shaped continuous sealed empty bag.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14541784A JPS6124428A (en) | 1984-07-13 | 1984-07-13 | Manufacturing device of buffer body |
| US06/742,091 US4714506A (en) | 1982-07-01 | 1985-06-06 | Method for making a dunnage shock absorber |
| US07/001,628 US4847126A (en) | 1982-07-01 | 1987-01-08 | Elongated plastic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14541784A JPS6124428A (en) | 1984-07-13 | 1984-07-13 | Manufacturing device of buffer body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6124428A JPS6124428A (en) | 1986-02-03 |
| JPH0343123B2 true JPH0343123B2 (en) | 1991-07-01 |
Family
ID=15384766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14541784A Granted JPS6124428A (en) | 1982-07-01 | 1984-07-13 | Manufacturing device of buffer body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6124428A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6396003A (en) * | 1986-09-30 | 1988-04-26 | 出光石油化学株式会社 | Production unit for hollow bag |
| JPH081790A (en) * | 1994-06-22 | 1996-01-09 | Yoshihiro Horie | Production of packing buffer material |
| ITVI20120078A1 (en) * | 2012-04-03 | 2013-10-04 | Easy Access Internat Co Limi Ted | SUPPORT FRAME FOR INDUSTRIAL MACHINERY |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5954515A (en) * | 1982-09-24 | 1984-03-29 | Ii P I:Kk | Production of plastic made shock-absorbing body connected with hollow units |
-
1984
- 1984-07-13 JP JP14541784A patent/JPS6124428A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5954515A (en) * | 1982-09-24 | 1984-03-29 | Ii P I:Kk | Production of plastic made shock-absorbing body connected with hollow units |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6124428A (en) | 1986-02-03 |
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