JPH0233495B2 - - Google Patents
Info
- Publication number
- JPH0233495B2 JPH0233495B2 JP57115142A JP11514282A JPH0233495B2 JP H0233495 B2 JPH0233495 B2 JP H0233495B2 JP 57115142 A JP57115142 A JP 57115142A JP 11514282 A JP11514282 A JP 11514282A JP H0233495 B2 JPH0233495 B2 JP H0233495B2
- Authority
- JP
- Japan
- Prior art keywords
- foam
- slab
- seat
- mold
- manufacturing
- 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 40
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 239000002994 raw material Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000005187 foaming Methods 0.000 claims description 5
- 229920005830 Polyurethane Foam Polymers 0.000 description 14
- 239000011496 polyurethane foam Substances 0.000 description 14
- 239000011550 stock solution Substances 0.000 description 6
- 238000003825 pressing Methods 0.000 description 4
- 238000005470 impregnation Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/1261—Avoiding impregnation of a preformed part
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 本発明は発泡成形体の製造方法に関する。[Detailed description of the invention] The present invention relates to a method for manufacturing a foam molded article.
発泡成形体の一例として、第１図Ａ，Ｂの構造
を有するクツシヨン体が知られている。同図Ａは
平面図であり、同図ＢはそのＢ−Ｂ線に沿う断面
図である。これらの図において、１は軟質ポリウ
レタン発泡体等からなる座部である。該座部１の
両側にはポリウレタン発泡体からなる該座部１よ
りも硬い発泡体材料からなる側部２，２が一体に
設けられている。この側部２，２は座部１よりも
肉厚で土手状に形成されている。上記構成からな
るクツシヨン体は土手状の側部２，２により安定
したホールド感が得られ、主として車輛等のシー
トとして用いられている。 As an example of a foamed molded article, a cushion body having the structure shown in FIGS. 1A and 1B is known. Figure A is a plan view, and Figure B is a sectional view taken along line B-B. In these figures, 1 is a seat made of soft polyurethane foam or the like. Both sides of the seat 1 are integrally provided with side parts 2, 2 made of a foam material harder than the seat 1 made of polyurethane foam. The side portions 2, 2 are thicker than the seat portion 1 and are formed into a bank shape. The cushion body constructed as described above provides a stable holding feeling due to the bank-like side portions 2, 2, and is mainly used as a seat for a vehicle or the like.
ところで、上記構造のクツシヨン体の製造方法
として座部１および側部２，２を一体かつ同時に
モールド成形することも行なわれているが、コス
トを低減するために座部１としては予め発泡成形
して得られた発泡体スラブを用いる方法が行なわ
れている。第２図Ａ，Ｂは上記製造方法を説明す
るための断面図である。この方法では、まず予め
座部１の形状に成形されたポリウレタン発泡体ス
ラブ３を、クツシヨン体の外形に対応した形状の
成形室を有する下型４の所定位置に配設する。続
いて、側部２を形成するための発泡体原料５、例
えばポリウレタン発泡体原料を下型４の所定位置
に注入する（第２図Ａ図示）。次に、上型６で閉
型して発泡体原料５を発泡させることにより、発
泡体スラブ３と一体化した側部２，２が形成され
る（第２図Ｂ図示）。そして、これを脱型するこ
とによつて第１図Ａ，Ｂと同様の構造を有するク
ツシヨン体が得られる。 By the way, as a manufacturing method for the cushion body having the above structure, the seat part 1 and the side parts 2, 2 are integrally and simultaneously molded, but in order to reduce the cost, the seat part 1 is formed by foam molding in advance. A method using foam slabs obtained by FIGS. 2A and 2B are cross-sectional views for explaining the above manufacturing method. In this method, first, a polyurethane foam slab 3 previously molded into the shape of the seat 1 is placed in a predetermined position of a lower mold 4 having a molding chamber shaped to correspond to the outer shape of the cushion body. Subsequently, a foam raw material 5, for example a polyurethane foam raw material, for forming the side part 2 is injected into a predetermined position of the lower mold 4 (as shown in FIG. 2A). Next, the upper mold 6 is closed and the foam raw material 5 is foamed, thereby forming side parts 2, 2 that are integrated with the foam slab 3 (as shown in FIG. 2B). By demolding this, a cushion body having a structure similar to that shown in FIGS. 1A and 1B is obtained.
ところがこの製造方法では発泡によつて急激に
膨張した発泡体原料５が下型４の内面に沿つて発
泡体スラブ３の下に廻り込み、発泡体表面に含浸
するという問題があつた。このため、得られたク
ツシヨン体は第３図に示すように座部、即ち発泡
体スラブ３の表面に部分的に含浸層７が形成され
てしまい、硬度の高いこの含浸層によつてクツシ
ヨン性が損われてしまうという問題があつた。 However, this manufacturing method has a problem in that the foam raw material 5, which has rapidly expanded due to foaming, goes around under the foam slab 3 along the inner surface of the lower mold 4 and impregnates the surface of the foam. As a result, the impregnated layer 7 is partially formed on the seat portion, that is, the surface of the foam slab 3, as shown in FIG. There was a problem that the data was damaged.
本発明は上記事情に鑑みてなされたもので、座
部およびこれよりも硬い土手状の側部からなる発
泡体で出来たクツシヨン体の製造に適用すれば、
座部に予め成形された発泡体スラブを用いた場合
にもその表面に含浸層が形成されるのを防止する
ことができる発泡成形体の製造方法を提供するも
のである。 The present invention has been made in view of the above circumstances, and if applied to the production of a cushion body made of a foam consisting of a seat portion and a bank-like side portion that is harder than the seat portion,
The present invention provides a method for manufacturing a foam molded article that can prevent an impregnated layer from being formed on the surface even when a pre-formed foam slab is used for the seat.
即ち、本発明は目的形状を有するモールド型内
の一部所定位置には予め発泡成形された発泡体ス
ラブを配設すると共に、モールド型内のその他の
位置には発泡体原料を配設した後、前記発泡体ス
ラブを圧縮した状態でモールド型を閉型し、前記
発泡体原料を発泡させることにより前記発泡体ス
ラブと一体にモールド成形することを特徴とする
発泡成形体の製造方法である。 That is, in the present invention, a pre-formed foam slab is disposed at a predetermined position in a part of a mold having a desired shape, and a foam raw material is disposed at other positions within the mold. , a method for producing a foam molded article, characterized in that the mold is closed in a compressed state of the foam slab, and the foam raw material is foamed to be integrally molded with the foam slab.
本発明はモールド型内に配設された発泡体スラ
ブを圧縮することによりその気泡を押しつぶして
含浸を防止するもので、その圧縮率は発泡体スラ
ブの種類にもよるが、発泡体スラブの厚さの10％
〜95％、望ましくは50％〜95％とする。 The present invention prevents impregnation by compressing the foam slab placed in the mold, thereby crushing the air bubbles and preventing impregnation.The compression ratio depends on the type of the foam slab, but the thickness of the foam slab is 10% of the
95%, preferably 50% to 95%.
以下、第４図Ａ〜Ｃおよび第５図を参照して本
発明を第１図Ａ，Ｂのクツシヨン体の製造に適用
した実施例を説明する。 Hereinafter, an embodiment in which the present invention is applied to manufacturing the cushion bodies shown in FIGS. 1A and 1B will be described with reference to FIGS. 4A to 4C and FIG. 5.
実施例 １
(i) まず、従来同様の下型１１を用い、目的とす
るクツシヨン体の座部の形状に予め成形された
軟質ポリウレタン発泡体スラブ（硬度８Kg／
JIS）１２を配設すると共に、下型１１におけ
る側部成形空間内に目的とするクツシヨン体の
側部形成用ポリウレタン発泡体原液１３を注入
した（第４図Ａ図示）。Example 1 (i) First, using the conventional lower mold 11, a soft polyurethane foam slab (hardness 8 kg/
JIS) 12 was placed, and a polyurethane foam stock solution 13 for forming the side part of the intended cushion body was injected into the side molding space of the lower mold 11 (as shown in FIG. 4A).
なお、図中１４は上型であり、該上型には前
記軟質ポリウレタン発泡体スラブ１２に対応す
る位置に突出した押圧部１５が形成されてい
る。また前記側部形成用ポリウレタン発泡体原
液１３としては下記組成を有するコールドキユ
アタイプのものを用いた。 In the figure, reference numeral 14 denotes an upper mold, and the upper mold has a protruding pressing portion 15 formed at a position corresponding to the flexible polyurethane foam slab 12. Further, as the polyurethane foam stock solution 13 for forming the side portions, a cold cure type foam having the following composition was used.
記
３官分子量6000のポリオール 60重量部
ポリマーポリオールPOP31−28 40 〃
ジエタノールアミン 1.0 〃
水 3.0 〃
シリコーン油 0.5 〃
ポリイソシアネートTM−20 インデツクス100
(ii) 次に、上型１４を用いて閉型すると同時に押
圧部１５により軟質ポリウレタン発泡体スラブ
１２を元の厚さの80％に圧縮し、この状態で側
部形成用のポリウレタン発泡体原液１３を発泡
キユアさせた。これにより、硬度18Kg／JISの
ポリウレタン発泡体からなる側部１６が形成さ
れた（第４図Ｂ図示）。 Polyol having a tertiary functional molecular weight of 6000 60 parts by weight Polymer polyol POP31-28 40 〃 Diethanolamine 1.0 〃 Water 3.0 〃 Silicone oil 0.5 〃 Polyisocyanate TM-20 Index 100 (ii) Next, the upper mold 14 is used to close the mold and at the same time The soft polyurethane foam slab 12 was compressed to 80% of its original thickness by the pressing unit 15, and in this state, the polyurethane foam stock solution 13 for forming the side portions was foamed and cured. As a result, a side portion 16 made of polyurethane foam having a hardness of 18 kg/JIS was formed (as shown in FIG. 4B).
なお、このときポリウレタン発泡体スラブ１
２は圧縮されて気泡が押しつぶされているた
め、発泡原液１３がスラブ１２の表面に廻り込
む事がないためその含浸は防止される。 In addition, at this time, polyurethane foam slab 1
2 is compressed so that the bubbles are crushed, so the foaming stock solution 13 does not go around the surface of the slab 12, and its impregnation is prevented.
(iii) 次に、上記得られたモールド成形体を脱型す
ると圧縮されていた発泡体スラブ１２が元の厚
さに復元され、第４図Ｃに示すように発泡体ス
ラブ１２からなる座部およびモールド成形され
た側部１６が一体となつたクツシヨン体が得ら
れた。(iii) Next, when the molded product obtained above is demolded, the compressed foam slab 12 is restored to its original thickness, and as shown in FIG. 4C, the seat made of the foam slab 12 is A cushion body was obtained in which the molded side portions 16 were integrated.
上記得られたクツシヨン体は発泡体スラブ１
２と側部１６との境界に形成される含浸層が少
ないため両者の接合強度は従来のものよりも若
干低いが、クツシヨン体としての使用には充分
に耐え得る接合強度が得られた。また、両者の
境界には発泡体スラブの復元により若干の歪が
発生するが、これも使用上何等問題にはならな
い程度のものであつた。他方、座部（即ち、発
泡体スラブ１２）の表面には何等含浸層が形成
さず、良好な性状を有していた。 The cushion body obtained above is a foam slab 1.
Since the impregnated layer formed at the boundary between 2 and the side portion 16 was small, the bonding strength between the two was slightly lower than that of the conventional one, but a bonding strength sufficient to withstand use as a cushion body was obtained. In addition, some distortion occurred at the boundary between the two due to the restoration of the foam slab, but this was to the extent that it did not pose any problem in use. On the other hand, no impregnated layer was formed on the surface of the seat (that is, the foam slab 12), and it had good properties.
実施例 ２
第５図は本発明の他の実施例になる製造方法の
説明図である。この実施例では下型１１として座
部形成空間と側部形成空間との境界が堰部材１７
で仕切られたものを用いる点で実施例１と異なつ
ており、その他は総て同じである。この実施例で
は堰部材１７によつて発泡原液１３の廻り込みが
抑制されるから、実施例１よりも更に良好な結果
が得られる。Embodiment 2 FIG. 5 is an explanatory diagram of a manufacturing method according to another embodiment of the present invention. In this embodiment, as the lower mold 11, the boundary between the seat forming space and the side forming space is the weir member 17.
This differs from Example 1 in that a partition partitioned by 1 is used, and everything else is the same. In this example, since the weir member 17 prevents the foaming stock solution 13 from going around, even better results than in Example 1 can be obtained.
ただし、堰部材１７が設けられていても発泡液
１３の廻り込みが完全に防止される訳ではなく、
もし押圧部１５による発泡体スラブ１２の圧縮が
行なわれていなければ発泡体スラブ１２表面に含
浸層が形成されることになる。従つて堰部材１７
は本発明においては有効であるが、これを単独で
用いてもあまり効果は得られない。 However, even if the weir member 17 is provided, it does not mean that the foaming liquid 13 is completely prevented from going around.
If the foam slab 12 is not compressed by the pressing section 15, an impregnated layer will be formed on the surface of the foam slab 12. Therefore, the weir member 17
is effective in the present invention, but using it alone does not produce much effect.
なお、上記実施例で得られるクツシヨン体は何
れも側部１６が座部１２よりも硬く、またそのよ
うなクツシヨン体の製造方法として本発明を説明
して来たが、上述の説明から明らかなように、本
発明は側部１６の方が座部１２よりも柔らかいク
ツシヨン体あるいは両者の硬度が同じクツシヨン
体の製造にも適用することができる。 In each of the cushion bodies obtained in the above embodiments, the side portion 16 is harder than the seat portion 12, and although the present invention has been described as a method for manufacturing such a cushion body, it is clear from the above description. Thus, the present invention can be applied to manufacturing a cushion body in which the side portion 16 is softer than the seat portion 12, or a cushion body in which both sides have the same hardness.
また、本発明はクツシヨン体のみならずその他
種々の発泡成形体の製造にも同様に適用できるも
のである。 Further, the present invention is applicable not only to the production of cushion bodies but also to the production of various other foam molded bodies.
以上詳述したように、本発明によればモールド
成形により発泡成形体を製造するに際し、一部に
予め製造された発泡体スラブを用いてコストを低
減し、かつその表面に含浸層が形成されるのを防
止できる等、顕著な効果を有するものである。 As described in detail above, according to the present invention, when manufacturing a foam molded body by molding, a pre-fabricated foam slab is partially used to reduce costs, and an impregnated layer is formed on the surface of the foam slab. It has remarkable effects, such as being able to prevent
第１図Ａは本発明の製造対象例であるクツシヨ
ン体の平面図、第１図Ｂは同図ＡのＢ−Ｂ線に沿
う断面図、第２図Ａ，Ｂは第１図Ａ，Ｂのクツシ
ヨン体の従来の製造方法を説明するための断面
図、第３図は従来の製造方法の問題点を示す説明
図、第４図Ａ〜Ｃは本発明の一実施例になる製造
工程を示す断面図、第５図は本発明の変形を説明
するための断面図である。
１１……下型、１２……ポリウレタン発泡体ス
ラブ（座部）、１３……ポリウレタン発泡体原液、
１４……上型、１５……押圧部、１６……側部、
１７……堰部材。
FIG. 1A is a plan view of a cushion body which is an example of the manufacturing object of the present invention, FIG. 1B is a sectional view taken along the line B-B of FIG. 3 is an explanatory diagram showing the problems of the conventional manufacturing method, and FIGS. 4A to 4C are sectional views showing the manufacturing process according to an embodiment of the present invention. The sectional view shown in FIG. 5 is a sectional view for explaining a modification of the present invention. 11...Lower mold, 12...Polyurethane foam slab (seat part), 13...Polyurethane foam stock solution,
14... Upper mold, 15... Pressing part, 16... Side part,
17...Weir member.
Claims (1)
置には予め発泡成形された発泡体スラブを配設す
ると共に、モールド型内のその他の位置には発泡
体原料を配設した後、前記発泡体スラブを圧縮し
た状態でモールド型を閉型し、前記発泡体原料を
発泡させることにより前記発泡体スラブと一体に
モールド成形することを特徴とする発泡成形体の
製造方法。1. A foam slab that has been foam-molded in advance is placed in a predetermined position in a part of a mold having a target shape, and a foam raw material is placed in other positions in the mold, and then the foam is A method for manufacturing a foam molded article, comprising: closing a mold in a compressed state of the slab, and foaming the foam raw material to form the foam integrally with the foam slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57115142A JPS595041A (en) | 1982-07-02 | 1982-07-02 | Manufacture of foam molded object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57115142A JPS595041A (en) | 1982-07-02 | 1982-07-02 | Manufacture of foam molded object |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS595041A JPS595041A (en) | 1984-01-11 |
| JPH0233495B2 true JPH0233495B2 (en) | 1990-07-27 |
Family
ID=14655331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57115142A Granted JPS595041A (en) | 1982-07-02 | 1982-07-02 | Manufacture of foam molded object |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS595041A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05129637A (en) * | 1991-10-31 | 1993-05-25 | Matsushita Electric Ind Co Ltd | Photodetector |
| CN104602885A (en) * | 2012-09-04 | 2015-05-06 | 东海化成工业株式会社 | Vehicle interior part and manufacturing method therefor |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4957672A (en) * | 1987-12-04 | 1990-09-18 | Carter Robert W | Method of forming a sealing gasket for reticulated foam filter |
| US5439630A (en) * | 1993-09-02 | 1995-08-08 | Davidson Textron Inc. | Method for molding a trim panel with integrally formed simulated leather appliques |
| IT1284836B1 (en) * | 1996-07-16 | 1998-05-22 | Bruzolo Manifatt Gestind Mb | PROCEDURE FOR THE MANUFACTURE OF A COMPONENT FOR VEHICLES |
-
1982
- 1982-07-02 JP JP57115142A patent/JPS595041A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05129637A (en) * | 1991-10-31 | 1993-05-25 | Matsushita Electric Ind Co Ltd | Photodetector |
| CN104602885A (en) * | 2012-09-04 | 2015-05-06 | 东海化成工业株式会社 | Vehicle interior part and manufacturing method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS595041A (en) | 1984-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4374885A (en) | Cushion materials and method of making same | |
| US4405681A (en) | Foam article and method of preparation | |
| US4976414A (en) | Method of producing skin-covered foamed plastic article | |
| US4670925A (en) | Process for the production of a cushion for a seat or the back for a motor vehicle or the like comprising two layers of foamed material with different properties and cushion prepared by the process | |
| US4762654A (en) | Method for making foamed articles having a laminated structure | |
| JPS63172614A (en) | Manufacture of molded part, particularly, cushion, from fluid reaction mixture forming at least two kind of foam material having different elasticity or hardness, particularly, polyurethane foam material, and usage of said method for manufacturing automobile seat cushion with side section frame | |
| JPH0233495B2 (en) | ||
| PL322828A1 (en) | Method of moulding components having layers of controllable thickness | |
| JP2557249B2 (en) | Method for manufacturing different hardness cushion body | |
| JPS61233513A (en) | Preparation of cushion material | |
| JPS58112715A (en) | Preparation of molded foam with different hardnesses | |
| JP2952709B2 (en) | Method of manufacturing cushion body of different hardness | |
| US4927694A (en) | Method of producing skin-covered pad for seat | |
| JP3100188B2 (en) | Manufacturing method of molded molded products | |
| JPS5931353B2 (en) | Manufacturing method of cushion material | |
| JPS61125816A (en) | Manufacture of urethane foam molded product | |
| JP2652868B2 (en) | Seat cushion body and method of manufacturing seat cushion body | |
| JP2950580B2 (en) | Different hardness cushion body and its manufacturing method | |
| JP2998041B2 (en) | Manufacturing method of bare headrest with different hardness | |
| JPH0369287B2 (en) | ||
| WO2002009930A3 (en) | Method of making a composite panel | |
| JPH0467913A (en) | Different hardness bare headrest and manufacture thereof | |
| JPH0446132B2 (en) | ||
| JPH05201290A (en) | Interior panel for vehicle | |
| JPH02292007A (en) | Molding method of foam body and its mold |