JPH0566242B2 - - Google Patents
Info
- Publication number
- JPH0566242B2 JPH0566242B2 JP60149628A JP14962885A JPH0566242B2 JP H0566242 B2 JPH0566242 B2 JP H0566242B2 JP 60149628 A JP60149628 A JP 60149628A JP 14962885 A JP14962885 A JP 14962885A JP H0566242 B2 JPH0566242 B2 JP H0566242B2
- Authority
- JP
- Japan
- Prior art keywords
- foam
- synthetic
- resin
- foam body
- pad
- 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
- 239000006260 foam Substances 0.000 claims description 47
- 229920005989 resin Polymers 0.000 claims description 27
- 239000011347 resin Substances 0.000 claims description 27
- 238000003825 pressing Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 4
- 238000005470 impregnation Methods 0.000 claims 5
- 239000000463 material Substances 0.000 claims 5
- 238000009825 accumulation Methods 0.000 claims 3
- 230000006835 compression Effects 0.000 claims 3
- 238000007906 compression Methods 0.000 claims 3
- 238000005187 foaming Methods 0.000 claims 2
- 238000004080 punching Methods 0.000 claims 2
- 229920003002 synthetic resin Polymers 0.000 claims 2
- 239000000057 synthetic resin Substances 0.000 claims 2
- 206010040844 Skin exfoliation Diseases 0.000 claims 1
- 230000002950 deficient Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 239000006261 foam material Substances 0.000 claims 1
- 238000010097 foam moulding Methods 0.000 claims 1
- 210000004705 lumbosacral region Anatomy 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
第１図は本発明に係る方法で製造したシートパ
ツドの斜視図、第２図は第１図Ａ−Ａ線断面図、
第３〜７図は同シートパツドの製造工程を示す説
明図、第８，９図は別の実施例に係るシートパツ
ドの製造工程を示す説明図である。
１：パツド体、２：高硬度部、３：金型、３
３，３４（３３）：押圧板、４：フオーム体、５，
５′：合成発泡樹脂。
FIG. 1 is a perspective view of a seat pad manufactured by the method according to the present invention, FIG. 2 is a sectional view taken along line A-A in FIG.
3 to 7 are explanatory diagrams showing the manufacturing process of the same seat pad, and FIGS. 8 and 9 are explanatory diagrams showing the manufacturing process of the seat pad according to another embodiment. 1: Pad body, 2: High hardness part, 3: Mold, 3
3, 34 (33): Pressing plate, 4: Foam body, 5,
5': Synthetic foam resin.
Claims (1)
を組付け配置し、その型内に合成発泡樹脂を充填
してフオーム体を押圧板で圧縮し、次いでフオー
ム体から押圧板を離反させて押圧解除し、この押
圧解除でフオーム体を復元して合成発泡樹脂を層
内に吸引含浸させ、その樹脂含浸でパツド体に部
分的な高硬度部を一体成形するようにしたことを
特徴とするシートパツドの製造方法。 ２ 上記フオーム体を覆う程度に合成樹脂が発泡
したときに押圧板でフオーム体を圧縮し、次いで
押圧解除するようにしたところの特許請求の範囲
第１項記載のシートパツドの製造方法。 ３ 上記フオーム体を通気自在な押圧板で圧縮す
るようにしたところの特許請求の範囲第１項記載
のシートパツドの製造方法。 【特許請求の範囲】 産業上の利用分野 本発明は、部分的に高硬度部分を有するシート
パツドの製造方法に関するものである。 従来の技術 一般に、シートパツドにおいては、腰椎部を安
定よく支持し或いは土手部の剛性を向上する等の
目的で所望個所を部分的に高硬度に形成すること
が行われている。 従来、この高硬度部分を設けるにあたつては、
パツド体の発泡成形時にスラブ材、チツプ材、ロ
ツク材或いは硬質フオーム体を埋込んで一体に発
泡成形することが行われている。 発明が解決しようとする問題点 然し、この方法では合成発泡樹脂がインサート
部材に十分に含浸せず、また、その合成発泡樹脂
を積極的に含浸させるべく予めインサート部材に
スリツトやコア抜き等の加工を施して一体発泡し
ても表面から２〜３mm程度しか合成発泡樹脂が含
浸しないため、硬度が腰椎の安定支持或いは土手
部の剛性向上等の観点から十分に満足できるもの
にはならない。殊に、硬質フオーム体の場合には
気泡が独立で合成発泡樹脂の含浸が少なくしかも
弾性がほとんどないところから剥離が生ずる虞れ
もある。また、これらインサート部材を唯単に合
成発泡樹脂と一体成形するときには合成発泡樹脂
が含浸する際にスラブ材等から排出される空気で
パツド体内にガス溜り等が発生して不良品を生ず
る原因にもなつている。 問題点を解決するための手段 本発明に係るシートパツドの製造方法において
は、金型内の所望位置に連続多孔質のフオーム体
を組付け配置し、その型内に合成発泡樹脂を充填
してフオーム体を押圧板で圧縮し、次いでフオー
ム体から押圧板を離反させて押圧解除し、この押
圧解除でフオーム体を復元して合成発泡樹脂を層
内に吸引含浸させ、その樹脂含浸でパツド体に部
分的な高硬度部を一体成形するようにされてい
る。 作 用 このシートパツドの製造方法では、連続多孔質
のフオーム体を圧縮し、その復元に伴う吸引力で
合成発泡樹脂を含浸させるために層内の深くにま
で合成発泡樹脂を含浸させてパツド体と一体な硬
化層を形成できるばかりでなく、フオーム体が圧
縮された状態から復元することにより合成発泡樹
脂を吸引するから排出空気によるガス溜り等がパ
ツド体内に生ずることもない。 実施例 以下、添付図面を参照して説明すれば、次の通
りである。 この実施例では第１及び２図で示すように車輌
用シートのバツクパツドを製造することが行われ
ており、また、そのパツド体１を発泡成形するに
あたつて腰椎相当部にランバーサポートとして高
硬度部２を設けることが行われている。金型３と
しては第３図で示す如き上型３１と下型３２とか
らなる合成樹脂発泡型が用いられ、その各型の内
側で高硬度部２の成形位置に相応して夫々昇降動
可能な押圧板３３，３４が相対向させて設けられ
ている。また、下型３２には第４図で示すように
後述するフオーム体の隅角位置に相応して支ピン
３５が突設されている。 この金型３を用いては、まず第３，４図で示す
如くフオーム体４を押圧板３４の板面上に支ピン
３５で支持することにより下型３２の内側に組付
け配置する。そのフオーム体４としては連続多孔
質のものが用いられ、例えば0.02g／cm3程度の軟
質スラブで厚み５〜25mm程度のものが適当であ
る。このフオーム体４の組付けと共に、金型３内
には合成発泡樹脂５を充填する。しかる後に金型
３を型締め固定し、押圧板３３を押圧板３４に近
接動することによりフオーム体４を押圧板３３，
３４で挾圧圧縮する。その圧縮は下型３２がバツ
クパツド１の土手部に相応した湾曲部分を持つも
ののような場合、第５図で示すように合成発泡樹
脂５がフオーム体４を覆う程度にまで発泡したと
きに行うようにする。また、この圧縮量はフオー
ム体４の板厚35％以上で、好ましくは50％以上圧
縮するようにするとよい。各押圧板３３，３４で
第６図で示す如くフオーム体４を圧縮したなら
ば、次いで第７図で示すように各押圧板３３，３
４を離反動させてフオーム体４から押圧を解除す
る。その押圧解除でフオーム体４は板厚を復元す
るよう膨張するが、この時に発泡途上にある合成
発泡樹脂５′を吸引して層内深くにまで含浸させ
るようになる。その含浸深さは15mm厚みの軟質ス
ラブを75％程度圧縮した場合に約12mm程度にまで
至るものであり、比較的大きな厚みで樹脂硬化部
を形成できるようになる。また、各押圧板３３，
３４を離反動させるときにはフオーム体４が支ピ
ン３５上に残るため合成発泡樹脂５が第７図で示
すようにフオーム体４と押圧板３４との間に流込
むことによりフオーム体４をパツド体１の層内に
埋込み配置するため、パツド体１と確実に一体成
形できるようになる。 斯してシートパツド１を製造するときには、フ
オーム体４が層内の深くにまで合成発泡樹脂５を
含浸して極めて硬度の高いランバーサポート部を
パツド体１に形成できるものであり、またフオー
ム体４の圧縮で層内に存在する空気を排出してし
まうことにより合成発泡樹脂５をフオーム体４に
含浸してもガスが発生しないから、パツド体１に
はガス溜り等による空隙部が生ずることはない。 なお、上述した実施例では押圧板３３，３４を
上下各型３１，３２に取付けて双方よりフオーム
体４を圧縮するようにしたが、これを第８，９図
で示す如く片側のみにしてパツド体１の表面側に
合成発泡樹脂の含浸しないフオーム面を露呈させ
るようにしてもよい。この場合には、その含浸深
さは20mm厚みの軟質スラブを75％程度圧縮した場
合に約９mm程度にまで至るものであり、比較的大
きな厚みで樹脂硬化部を形成できるようになる。
また、軟質スラブ等の持つ弾力性で初期フイーリ
ングの極めて良好な高硬度部を形成することがで
きる。更に、各実施例で押圧板３３，３４として
メツシユ板或いはコア抜き板等の通気可能なもの
を用い、フオーム体４の圧縮と共に空気を型外に
排出するようにするとフオーム体４が合成発泡樹
脂５をより一層良好に含浸できるようになる。ま
た、この実施例ではランバーサポートとして作用
する高硬度部２を設ける場合で説明したが、それ
以外に土手部の剛性を向上する場合或いは各種の
要請に応じてパツド体に高硬度部を設けるときに
も広く適用することができる。 発明の効果 以上の如く、本発明に係るシートパツドの製造
方法に依れば、合成発泡樹脂をフオーム体の層内
深くまで含浸させることにより腰椎の安定支持や
土手部の剛性付与等に適した高硬度をパツド体と
一体に成形することができ、またパツド体内には
ガス溜り等で空隙部が生ずることもないから良質
なパツド体を製造できるようになる。[Claims] 1. A continuous porous foam body is assembled and arranged at a desired position in a mold, the mold is filled with a synthetic foamed resin, the foam body is compressed with a pressing plate, and then the foam body is The pressure plate is separated and the pressure is released, and when the pressure is released, the foam body is restored and the synthetic foam resin is suctioned and impregnated into the layer, and the resin impregnation is used to integrally mold a partial high-hardness part on the pad body. A method of manufacturing a seat pad, which is characterized by: 2. The method of manufacturing a seat pad according to claim 1, wherein when the synthetic resin is foamed to the extent that it covers the foam, the foam is compressed by a pressing plate and then the pressure is released. 3. The method of manufacturing a seat pad according to claim 1, wherein the foam body is compressed by a press plate that is freely ventilable. [Claims] Industrial Application Field The present invention relates to a method of manufacturing a sheet pad having a partially high hardness portion. 2. Description of the Related Art In general, seat pads are partially formed to have high hardness at desired locations for the purpose of stably supporting the lumbar region or improving the rigidity of the bank. Conventionally, when providing this high hardness part,
During foam molding of the pad body, slab material, chip material, lock material, or hard foam material is embedded and foam molded integrally. Problems to be Solved by the Invention However, with this method, the insert member is not sufficiently impregnated with the synthetic foamed resin, and the insert member is processed in advance by slits, core punching, etc. in order to actively impregnate the synthetic foamed resin. Even if it is integrally foamed, the synthetic foamed resin will only be impregnated from the surface by about 2 to 3 mm, so the hardness will not be sufficiently satisfactory from the viewpoint of stably supporting the lumbar vertebrae or improving the rigidity of the bank. In particular, in the case of a rigid foam body, the cells are independent and there is little impregnation of the synthetic foam resin, and there is a risk of peeling because the body has almost no elasticity. In addition, when these insert members are simply integrally molded with synthetic foam resin, the air discharged from the slab material etc. when impregnated with synthetic foam resin may cause gas accumulation inside the pad body, resulting in defective products. It's summery. Means for Solving the Problems In the method for manufacturing a seat pad according to the present invention, a continuous porous foam body is assembled and arranged at a desired position in a mold, and the mold is filled with a synthetic foamed resin to form a foam body. The body is compressed by a press plate, and then the press plate is separated from the foam body to release the pressure. When the pressure is released, the foam body is restored and the synthetic foam resin is sucked and impregnated into the layer, and the resin impregnation is applied to the pad body. Partially high hardness parts are integrally molded. Function In this sheet pad manufacturing method, a continuous porous foam body is compressed, and the synthetic foam resin is impregnated deep into the layer to impregnate the foam body with the synthetic foam resin using the suction force that accompanies its restoration. Not only is it possible to form an integral hardened layer, but the synthetic foamed resin is sucked by the foam body as it recovers from its compressed state, so that no gas pockets or the like are generated inside the pad body due to discharged air. Embodiments The following description will be made with reference to the accompanying drawings. In this embodiment, as shown in Figs. 1 and 2, a back pad for a vehicle seat is manufactured, and when the pad body 1 is foam-molded, a high lumbar support is placed on the part corresponding to the lumbar vertebrae. Providing a hard part 2 is practiced. As the mold 3, a synthetic resin foaming mold consisting of an upper mold 31 and a lower mold 32 as shown in FIG. 3 is used, and inside each mold, each can be moved up and down according to the molding position of the high hardness part 2. Pressing plates 33 and 34 are provided facing each other. Further, as shown in FIG. 4, the lower die 32 is provided with supporting pins 35 protruding in correspondence with corner positions of the foam body, which will be described later. When using this mold 3, first, as shown in FIGS. 3 and 4, the foam body 4 is supported on the plate surface of the pressing plate 34 with support pins 35, and then assembled and arranged inside the lower mold 32. The foam body 4 used is a continuous porous one, for example, a soft slab of about 0.02 g/cm 3 and a thickness of about 5 to 25 mm is suitable. At the same time as this foam body 4 is assembled, the mold 3 is filled with a synthetic foamed resin 5. After that, the mold 3 is clamped and fixed, and the press plate 33 is moved close to the press plate 34, so that the foam body 4 is pressed against the press plate 33,
Compress with clamping pressure at 34. When the lower die 32 has a curved portion corresponding to the bank of the back pad 1, the compression is carried out when the synthetic foam resin 5 has foamed to the extent that it covers the foam body 4, as shown in FIG. Make it. The amount of compression is preferably 35% or more, preferably 50% or more of the thickness of the foam body 4. After the foam body 4 is compressed by each pressing plate 33, 34 as shown in FIG. 6, each pressing plate 33, 34 is compressed as shown in FIG.
4 to release the pressure from the foam body 4. When the pressure is released, the foam body 4 expands to restore its thickness, but at this time, the synthetic foamed resin 5', which is in the process of foaming, is sucked and impregnated deep into the layer. The impregnation depth reaches approximately 12 mm when a 15 mm thick soft slab is compressed by approximately 75%, making it possible to form a hardened resin part with a relatively large thickness. In addition, each pressing plate 33,
When the foam body 4 is moved away from the support pin 35, the synthetic foam resin 5 flows between the foam body 4 and the pressing plate 34 as shown in FIG. Since it is embedded in the layer of the pad body 1, it can be reliably molded integrally with the pad body 1. When manufacturing the seat pad 1 in this manner, the foam body 4 is impregnated with the synthetic foamed resin 5 deep into the layer to form an extremely hard lumbar support portion in the pad body 1; Since no gas is generated even when the foam body 4 is impregnated with the synthetic foamed resin 5 by expelling the air present in the layer by compression, voids due to gas accumulation etc. are not generated in the pad body 1. do not have. In the above-described embodiment, the pressing plates 33 and 34 were attached to the upper and lower dies 31 and 32 to compress the foam body 4 from both sides. A foam surface that is not impregnated with synthetic foamed resin may be exposed on the surface side of the body 1. In this case, the impregnation depth reaches approximately 9 mm when a 20 mm thick soft slab is compressed by approximately 75%, making it possible to form a resin hardened portion with a relatively large thickness.
Furthermore, the elasticity of a soft slab or the like makes it possible to form a highly hard part with extremely good initial feeling. Furthermore, in each of the embodiments, if breathable materials such as mesh plates or core punching plates are used as the pressing plates 33 and 34, and air is discharged outside the mold as the foam body 4 is compressed, the foam body 4 is made of synthetic foamed resin. 5 can be impregnated even better. In addition, although this embodiment has been described with reference to the case where the high hardness part 2 is provided to act as a lumbar support, it is also possible to improve the rigidity of the bank part or to provide a high hardness part in the pad body in response to various requests. It can also be widely applied. Effects of the Invention As described above, according to the method of manufacturing a seat pad according to the present invention, by impregnating the synthetic foam resin deep into the layer of the foam body, it is possible to achieve a high level of stability suitable for stably supporting the lumbar vertebrae and imparting rigidity to the bank. Since the hardness can be molded integrally with the pad body, and no voids are formed in the pad body due to gas accumulation, etc., a high quality pad body can be manufactured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60149628A JPS6210143A (en) | 1985-07-08 | 1985-07-08 | Production of seat pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60149628A JPS6210143A (en) | 1985-07-08 | 1985-07-08 | Production of seat pad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6210143A JPS6210143A (en) | 1987-01-19 |
| JPH0566242B2 true JPH0566242B2 (en) | 1993-09-21 |
Family
ID=15479377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60149628A Granted JPS6210143A (en) | 1985-07-08 | 1985-07-08 | Production of seat pad |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6210143A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5106548A (en) * | 1988-05-26 | 1992-04-21 | Ikeda Bussan Co., Ltd. | Method of producing skin-covered pad for seat |
| JPH0312231A (en) * | 1989-06-09 | 1991-01-21 | Kotobuki Akad:Kk | Capsule film composition |
-
1985
- 1985-07-08 JP JP60149628A patent/JPS6210143A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6210143A (en) | 1987-01-19 |
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