JPH0254220B2 - - Google Patents
Info
- Publication number
- JPH0254220B2 JPH0254220B2 JP55044867A JP4486780A JPH0254220B2 JP H0254220 B2 JPH0254220 B2 JP H0254220B2 JP 55044867 A JP55044867 A JP 55044867A JP 4486780 A JP4486780 A JP 4486780A JP H0254220 B2 JPH0254220 B2 JP H0254220B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- resin sheet
- core
- resin
- cushioning material
- 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
Landscapes
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は、車輌用の内装材等として使用される
緩衝材シートの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a cushioning sheet used as an interior material for a vehicle.
従来、この種の内装材としては中芯となる熱可
塑性の樹脂シートに中空状の気泡体を多数点在さ
せて形成し、その樹脂シートを挟んで表裏面に熱
可塑性の樹脂シートを加熱接合した緩衝材シート
を基材とするものが知られている。 Conventionally, this type of interior material has been formed by dotting a core thermoplastic resin sheet with many hollow air bubbles, and heat-bonding thermoplastic resin sheets on the front and back sides with the resin sheet in between. There are known products that use a cushioning material sheet as a base material.
然し、この基材となる各樹脂シートを接合する
際に中空状の気泡体を気密状態で処理すると、第
４図ａ，ｂで示す如く中芯となる樹脂シートに形
成された気泡体１ａ，１ａ…の内部空気が熱膨張
することにより被覆シート２，３の表面側に隆起
部を呈するようになる。例えばポロプロピレンシ
ートを中芯とした場合、120℃の加熱下で２〜５
分アニーニングするだけでも中空状の気泡体が膨
張するため、緩衝材シートの厚み寸法に誤差を生
じさせることになる。この隆起部は事後に平面状
の加熱プレート等でプレスすれば矯正することが
できるが、製造工程が増加するところから好まし
くない。 However, if the hollow foam is treated in an airtight state when joining the resin sheets that serve as the base material, the foam 1a, which is formed on the resin sheet that serves as the core, as shown in FIGS. 4a and 4b, Due to thermal expansion of the internal air of 1a..., raised portions are formed on the surface side of the covering sheets 2, 3. For example, if a polypropylene sheet is used as the core, 2 to 5
Even just annealing for a minute causes the hollow bubbles to expand, resulting in an error in the thickness dimension of the cushioning material sheet. This raised portion can be corrected by pressing with a flat heating plate or the like afterwards, but this is not preferable since it increases the number of manufacturing steps.
その熱膨張を防止するには各気泡体を連続する
連通孔を気泡体と共に樹脂シートに付形し、この
連通孔から内部空気を相隣接位置する気泡体に通
過させてシート側方の開放端より放出させつつ他
の樹脂シートを接合することが行われている（実
開昭54−133181号）。 To prevent the thermal expansion, a continuous communication hole between each cell is formed in the resin sheet together with the cell, and the internal air is passed through the communication hole to the adjacent cell and the open end on the side of the sheet is formed. It has been attempted to bond other resin sheets while releasing more resin (Utility Model Application No. 54-133181).
然し、その接合方法においては気泡体の内部空
気が現に接合されつつあるシートの内側寄りの気
泡体から既に接合されたシート側の隣接する気泡
体に移動することになるため、この内部空気の流
入でむしろ隣接する気泡体を強制的に膨ませてし
まうことにもなりかねない。 However, in this joining method, the internal air of the foam moves from the foam on the inside of the sheet that is currently being joined to the adjacent foam on the side of the sheet that has already been joined, so the inflow of this internal air This may actually force the adjacent bubbles to expand.
本発明は、斯る欠点を除去して表面側を容易に
平滑面状に仕上げ得る緩衝材シートの製造方法を
提供することを目的とする。 An object of the present invention is to provide a method for manufacturing a cushioning material sheet that can eliminate such defects and easily finish the surface side with a smooth surface.
即ち、本発明に係る緩衝材シートの製造方法に
おいては通気性を有する樹脂シートを中芯として
用い、この樹脂シートに中空状の気泡体を多数点
在させて形成し、その中空状の気泡体から内部空
気を流出させて裏表に布、紙、金属薄板等の被覆
シートを加熱接合することが行われている。 That is, in the method for manufacturing a cushioning material sheet according to the present invention, a breathable resin sheet is used as a core, a large number of hollow cells are dotted on this resin sheet, and the hollow cells are formed by dotting the resin sheet. The internal air is allowed to flow out, and a covering sheet of cloth, paper, thin metal plate, etc. is bonded to the front and back sides by heating.
以下、第１〜３図を参照して説明すれば、次の
通りである。 The following will be explained with reference to FIGS. 1 to 3.
この緩衝材シートは、第１図で示すように中芯
なる樹脂シート１を介して表裏側に被覆シート
２，３を一体接合することにより構成されてい
る。各シート１，２，３はPP、PE、PVC等の熱
可塑性樹脂で形成したものを用いることができ、
中芯となる樹脂シート１には微細な多孔質で通気
性を付与したものが用いられている。また、表裏
の各被覆シート２，３としては樹脂製のものの他
に布、紙、金属薄板を用いることもできる。この
中芯となる樹脂シート１には、中空状の気泡体１
ａ，１ａ…が平面に多数突出させて点在するよう
形成されている。その各気泡体１ａ，１ａ…は比
較的大きな形を有する円筒状のドーム形に形成で
き、隣接相互間が近接するよう多数点在させて形
成されている。この樹脂シート１に対しては被覆
シート２，３を加熱溶着し或いは接着剤で熱圧着
することにより夫々接合され、第２図で示すよう
に表シート２が気泡体１ａ，１ａ…の上端面に亘
りしかも裏シート３が中芯１ａ，１ａ…の裏面側
に位置されて各々一体接合されている。 As shown in FIG. 1, this cushioning material sheet is constructed by integrally joining covering sheets 2 and 3 on the front and back sides with a resin sheet 1 serving as a core interposed therebetween. Each sheet 1, 2, 3 can be made of thermoplastic resin such as PP, PE, PVC, etc.
The resin sheet 1 serving as the core is made of fine porous material that provides air permeability. Further, as the front and back cover sheets 2 and 3, in addition to those made of resin, cloth, paper, or thin metal plates can also be used. This core resin sheet 1 has hollow foam 1
A, 1a, . . . are formed in large numbers so as to protrude and be scattered on a plane. Each of the bubbles 1a, 1a, . . . can be formed into a relatively large cylindrical dome shape, and are formed in large numbers in a dotted manner so that adjacent bubbles are close to each other. Covering sheets 2 and 3 are bonded to this resin sheet 1 by heat welding or heat compression bonding with an adhesive, and as shown in FIG. Furthermore, the back sheet 3 is positioned on the back side of the cores 1a, 1a, . . . and is integrally joined to each other.
その緩衝材シートを製造するには、第３図で示
すように成形ロール５と押圧ロール６とで中芯と
なる樹脂シート１を所定形状に付形した後、これ
に引続いて被覆シート２，３を連続して一体接合
する連続成形法を採用できる。その成形ロールに
は気泡体成用の凹部５ａ，５ｂ…が円周面に形成
され、その凹部５ａ，５ｂに対応させて押圧ロー
ル６の円周面には凹部６ａ，６ｂ…が設けられて
いる。その成形ロール５を受けロールとして用
い、押圧ロール６との間に多孔質の樹脂シート１
を軟化状態で送込み或いは少なくとも成形ローラ
６を加熱ローラで構成することにより気泡体１
ａ，１ａ…を有する中芯シートとして形成するこ
とができる。この際、気泡体１ａ，１ａ…を付成
する凹部１ａ，１ｂ…にはロール径の中心方向に
穿設した通孔を介して適宜なサクシヨンで吸引エ
アーを作用すれば一定形状の気泡体１ａ，１ａ…
を正確に形成することができる。その中芯シート
１の付形後、繰出し方向前方にはピンチロール
７，８を上下に配置させて表裏の被覆シート２，
３を挾着ロール９に送り出すことにより中芯シー
ト１の付形工程に引続いて被覆シート２，３を接
合することができる。この際に、被覆シート２，
３として樹脂シートを用いる場合には軟化状態で
送り出し、上下の挾着ロール１１で三者一体に熱
圧着することにより接合することができる。ま
た、その圧着に伴つて各中空状の気泡体１ａが多
孔質な樹脂シートで形成されていることにより内
部空気を夫々に放出できるため、気泡体１ａ，１
ａ…が膨張しないところから被覆シート２，３を
平滑面に接合できるようになる。 In order to manufacture the cushioning material sheet, as shown in FIG. , 3 can be continuously molded into one piece by a continuous molding method. The forming roll has concave portions 5a, 5b, . . . formed on the circumferential surface for forming the air bubbles, and concave portions 6a, 6b, . There is. The forming roll 5 is used as a receiving roll, and a porous resin sheet 1 is placed between it and the pressing roll 6.
The foam 1 can be formed by feeding it in a softened state or by configuring at least the forming roller 6 with a heating roller.
It can be formed as a core sheet having a, 1a, . At this time, suction air is applied to the concave portions 1a, 1b, which form the bubbles 1a, 1a, etc. through holes drilled in the center direction of the roll diameter, using an appropriate suction to form the bubbles 1a in a certain shape. ,1a...
can be formed accurately. After shaping the core sheet 1, pinch rolls 7 and 8 are arranged up and down in the forward direction in the feeding direction, and the front and back cover sheets 2,
3 to the clamping roll 9, the covering sheets 2 and 3 can be joined subsequent to the shaping process of the core sheet 1. At this time, the covering sheet 2,
When a resin sheet is used as the resin sheet 3, it can be sent out in a softened state and joined by thermocompression bonding the three parts together using upper and lower clamping rolls 11. In addition, since each hollow foam body 1a is made of a porous resin sheet, internal air can be released from the foam foams 1a, 1 as they are crimped.
The covering sheets 2 and 3 can be bonded to a smooth surface from a point where a... does not expand.
以上の如く、本発明に係る緩衝材シートの製造
方法に依れば、中芯として通気性を有する樹脂シ
ートを用いることにより加熱接合の時に生ずる気
泡体の膨張を確実に阻止するため、被覆シートを
平滑面に仕上げ得て一定な厚みを有する緩衝材と
して簡単に形成できるようになる。 As described above, according to the method for manufacturing a cushioning material sheet according to the present invention, by using an air-permeable resin sheet as the core, the covering sheet It can be finished with a smooth surface and easily formed into a cushioning material with a constant thickness.
第１図は本発明に係る方法で製造する緩衝材シ
ートの展開斜視図、第２図は同緩衝材シートの断
端面図、第３図は同シートの製造にあたつて用い
得る装置の説明図、第４図ａ，ｂは同シートの製
造に伴う弊害の模式的説明図である。
１：中芯となる樹脂シート、１ａ，１ａ…：中
空状の気泡体、２，３：表裏の被覆シート。
FIG. 1 is an exploded perspective view of a cushioning material sheet manufactured by the method according to the present invention, FIG. 2 is a cross-sectional view of the same cushioning material sheet, and FIG. 3 is a diagram of an apparatus that can be used to manufacture the same sheet. The explanatory drawings and FIGS. 4a and 4b are schematic illustrations of the disadvantages associated with the manufacture of the same sheet. 1: Resin sheet serving as a core, 1a, 1a...: Hollow foam, 2, 3: Covering sheets on the front and back sides.
Claims (1)
い、この樹脂シートに中空状の気泡体を多数点在
させて形成し、その中空状の気泡体から内部空気
を流出させて裏表に布、紙、金属薄板等の被覆シ
ートを加熱接合するようにしたことを特徴とする
緩衝材シートの製造方法。1 A breathable resin sheet is used as the core, a large number of hollow cells are dotted on the resin sheet, and the internal air is allowed to flow out from the hollow cells to form cloth, paper, etc. on the front and back sides. A method for manufacturing a cushioning material sheet, characterized in that a covering sheet such as a thin metal plate is bonded by heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4486780A JPS56142052A (en) | 1980-04-05 | 1980-04-05 | Buffer material sheet and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4486780A JPS56142052A (en) | 1980-04-05 | 1980-04-05 | Buffer material sheet and its manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56142052A JPS56142052A (en) | 1981-11-06 |
| JPH0254220B2 true JPH0254220B2 (en) | 1990-11-21 |
Family
ID=12703439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4486780A Granted JPS56142052A (en) | 1980-04-05 | 1980-04-05 | Buffer material sheet and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56142052A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5505699B2 (en) * | 2010-02-03 | 2014-05-28 | トヨタ紡織株式会社 | Interior material for vehicle and method for manufacturing the same |
| JP2012245834A (en) * | 2011-05-26 | 2012-12-13 | Howa Textile Industry Co Ltd | Sound absorption sheet for automobile and engine under cover for automobile using the same |
| JP5808637B2 (en) * | 2011-09-30 | 2015-11-10 | 日鐵住金建材株式会社 | Composite structure consisting of resin structure and metal plate |
| WO2013047700A1 (en) * | 2011-09-30 | 2013-04-04 | 日鐵住金建材株式会社 | Compound structure equipped with resin structure and metal plate, and manufacturing method therefor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49172U (en) * | 1972-04-10 | 1974-01-05 | ||
| JPS5740225Y2 (en) * | 1978-03-07 | 1982-09-03 |
-
1980
- 1980-04-05 JP JP4486780A patent/JPS56142052A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56142052A (en) | 1981-11-06 |
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