JPH0687155A - Method for molding hollow structure by thermoforming synthetic resin plate - Google Patents
Method for molding hollow structure by thermoforming synthetic resin plateInfo
- Publication number
- JPH0687155A JPH0687155A JP27910592A JP27910592A JPH0687155A JP H0687155 A JPH0687155 A JP H0687155A JP 27910592 A JP27910592 A JP 27910592A JP 27910592 A JP27910592 A JP 27910592A JP H0687155 A JPH0687155 A JP H0687155A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- plates
- nonwoven fabric
- molding
- compressed air
- 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.)
- Granted
Links
Landscapes
- Laminated Bodies (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】熱可塑性合成樹脂板の熱成形法に
関するものである。TECHNICAL FIELD The present invention relates to a thermoforming method for a thermoplastic synthetic resin plate.
【０００２】[0002]
【従来の技術】熱可塑性合成樹脂板より、特殊の機械を
使用しないで中空構造の成形品を製造する方法は、個別
に真空または圧空成形した２枚の成形品を接着して製造
する。2. Description of the Related Art A method for manufacturing a hollow structure molded product from a thermoplastic synthetic resin plate without using a special machine is to bond two vacuum or pressure molded individual molded products.
【０００３】同種類の２枚の合成樹脂板を加熱中に２枚
が接触融着しないように５ｃｍ以上の間隙を保てる枠を
挟んで外周をクランプし、両面より加熱しそのまま雄、
雌型に挟んで加圧すると同時に枠内に圧空を送入し成形
する、クラムシェル成形法という特殊の成形機で製造す
る。[0003] Two synthetic resin plates of the same kind are clamped on the outer circumference with a frame holding a gap of 5 cm or more so that the two do not come into contact fusion during heating.
It is manufactured with a special molding machine called the clamshell molding method, in which it is sandwiched in a female mold and pressed to feed compressed air into the frame at the same time.
【０００４】２枚の合成樹脂板を別々に過熱し、各々を
単独に真空成形法により成形型に吸着し、その状態で成
形品が冷えないうちに両方の型を圧着し、中空以外の部
分を融着する特殊の成形機で製造する。Two synthetic resin plates are overheated separately, and each is adsorbed to a molding die by a vacuum molding method, and both molds are pressure-bonded while the molded product does not cool in that state, and parts other than hollow parts It is manufactured by a special molding machine that fuses
【０００５】[0005]
【発明が解決しようとする課題】従来の製造方法で最も
簡単なのは、２枚の成形品を接着する方法であるが、３
工程を要するため製造コストが高額になる。クラムシェ
ル成形法によると特殊な成形機が必要で、加熱中および
成形工程途中において、加熱したシートが接触すると融
着するため、成形品の形状にかなりの制約がある。また
最後に述べた方法も専用の成形機が必要で、深絞りの形
状のものはできない等の欠点がある。The simplest of the conventional manufacturing methods is a method of adhering two molded products.
Since the process is required, the manufacturing cost becomes high. According to the clamshell molding method, a special molding machine is required, and when heated sheets are brought into contact with each other during heating and during the molding process, they are fused, so that the shape of the molded product is considerably restricted. Further, the last-mentioned method also has a drawback that a dedicated molding machine is required and a deep-drawing shape cannot be formed.
【０００６】本発明は、汎用の圧空成形機で、形状の制
約なく必要の部分を中空構造にすることができる熱可塑
性合成樹脂の熱成形方法を提供することを目的としてい
る。It is an object of the present invention to provide a thermoforming method for a thermoplastic synthetic resin, which is capable of forming a required portion into a hollow structure without restriction of shape by a general-purpose pressure molding machine.
【０００７】[0007]
【課題を解決するための手段】図１に示す如く、成形材
として、２枚の同種類の熱可塑性合成樹脂板の間に、板
と同種類または熱融着可能の熱可塑性合成樹脂繊維より
なる不織布を挟んだものを用意する。As shown in FIG. 1, as a molding material, a nonwoven fabric composed of two thermoplastic synthetic resin plates of the same type and thermoplastic synthetic resin fibers of the same type as or capable of heat fusion with the plates. Prepare something sandwiched between.
【０００８】この成形材料を成形機のクランプ枠に挟
み、両面ヒーターにより成形適温迄加熱し、用意した成
形用雄、雌型の間に移動する。This molding material is sandwiched between clamp frames of a molding machine, heated to an appropriate molding temperature by a double-sided heater, and moved between the prepared male and female molds.
【０００９】両型を上昇、下降させ型締めを開始する、
型締め完了直前に圧空送入管を不織布層に差し込み圧空
を不織布層に送入する。Both molds are raised and lowered to start mold clamping,
Immediately before the completion of mold clamping, the compressed air feeding pipe is inserted into the non-woven fabric layer and the compressed air is fed into the non-woven fabric layer.
【００１０】成形品が冷却するまで型加圧を続行し、冷
却後圧空を止め、脱型する。Mold pressing is continued until the molded product is cooled, and after cooling, the pressure is stopped and the mold is released.
【００１１】合成樹脂板と熱融着できる不織布が入手で
きない場合は、図２に示すごとく、板と不織布の樹脂が
熱融着出来る接着フイルムを不織布の両面に挟み上記の
方法で成形を行なう。接着層を持つ２層シート使用して
も同じである。When a non-woven fabric that can be heat-sealed to the synthetic resin plate is not available, as shown in FIG. 2, an adhesive film that can heat-seal the resin of the plate and the non-woven fabric is sandwiched between both sides of the non-woven fabric, and molding is performed by the above method. The same is true when a two-layer sheet having an adhesive layer is used.
【００１２】成形材に挟んだ不織布は加熱され引き伸ば
されても、成形最終段階で雄、雌型により完全に圧縮さ
れるまでは空気を通す。Even if the nonwoven fabric sandwiched between the molding materials is heated and stretched, air is passed through until it is completely compressed by the male and female molds at the final stage of molding.
【００１３】成形材の中間層の不織布は繊維の結合がゆ
るいので、加熱された樹脂板の伸びを阻害することなく
樹脂板と共に伸びる。Since the non-woven fabric of the intermediate layer of the molding material has loose fiber bonds, it stretches together with the resin plate without impeding the elongation of the heated resin plate.
【００１４】成形最終段階で型間隙の狭い部分は雄、雌
型で完全に圧縮され半溶融状態の不織布の繊維は圧縮さ
れ互いに融着し密度があがると同時に樹脂板にも融着し
一体となる。At the final stage of molding, the portion having a narrow mold gap is completely compressed by the male and female molds, and the fibers of the non-melted non-woven fabric are compressed and fused to each other to increase the density, and at the same time, fused to the resin plate to be integrated. Become.
【００１５】中空構造にしたい型間隙の広い部分の不織
布は圧縮されず、互いに融着することなく型締め完了後
も空気が流通でき、空気圧が上がり樹脂板は各々雄、雌
型の表面に圧着する。不織布の繊維はほぐれてその空洞
内に残っている。The non-woven fabric having a wide space between the molds, which is desired to have a hollow structure, is not compressed, air can flow even after completion of the mold clamping without being fused to each other, the air pressure is increased, and the resin plates are pressure-bonded to the surfaces of the male and female molds, respectively. To do. The fibers of the non-woven fabric are loosened and remain in the cavity.
【００１６】[0016]
【実施例】実施例について図面を参照して説明すると、
図１は熱可塑性合成樹脂の成形材料の断面を示す、
（１）は１．５ｍｍ厚のポリプロピレン（ＰＰ）板、
（２）はＰＰ繊維の３００ｇｒ／ｃｍ２の目付け、繊維
長５０ｍｍ のラフなわた状の不織布である。EXAMPLES Examples will be described with reference to the drawings.
FIG. 1 shows a cross section of a molding material of thermoplastic synthetic resin,
(1) is a 1.5 mm thick polypropylene (PP) plate,
(2) is a rough non-woven fabric of PP fiber having a basis weight of 300 gr / cm 2 and a fiber length of 50 mm 2 .
【００１７】図３は汎用圧空成形機の成形ステーション
で、成形型の雄型（６）、雌型（７）を加圧プレスの上
ベット（８）、下ベット（９）に取り付けてある。雌型
（７）には空気の逃げ穴（１０）が設けてある。この図
は成形材（４）を成形機のクランプ枠（５）で挟んで、
両面加熱ヒーターで成形適温に加熱し成形ステーション
に移動した状態を示している。この状態で型締を行な
う。FIG. 3 shows a molding station of a general-purpose compressed air molding machine in which a male mold (6) and a female mold (7) of a molding die are attached to an upper bed (8) and a lower bed (9) of a pressure press. The female mold (7) is provided with an air escape hole (10). In this figure, the molding material (4) is sandwiched by the clamp frame (5) of the molding machine,
The figure shows a state in which the heater is heated to a suitable temperature for molding with a double-sided heater and moved to the molding station. The mold is clamped in this state.
【００１８】型締完了直前に圧空送入管（１１）を成形
材の不織布（２）に挿入し圧空を送り込む。Immediately before the completion of mold clamping, the compressed air inlet pipe (11) is inserted into the non-woven fabric (2) made of a molding material to supply compressed air.
【００１９】型締圧は約５ｋｇ／ｃｍ２で行なう。型間
隙の狭い部分（１２）の不織布（２）の半溶融状態にあ
る繊維は互いに融着し、厚さは１／１０位に圧縮され板
状になり加熱されているＰＰ板（１）と融着し一体とな
る。The mold clamping pressure is about 5 kg / cm 2 . The fibers in the semi-molten state of the non-woven fabric (2) in the portion (12) with a narrow mold gap are fused with each other, and the thickness is compressed to about 1/10 and becomes a plate-like PP plate (1) which is heated. Fused together to become one.
【００２０】型間隙の広い部分（１３）および圧空の通
路として型間隙を大きくしてある部分（１５）は、型締
が完了しても不織布（２）は加圧されないので圧空の送
入は可能で、かつ成形材両面の加熱されているＰＰ板
（１）同志が融着することもない。 ３ｋｇ／ｃｍ２程
度の圧空を送入すると成形材のＰＰ板（１）各々は伸び
て雄型（６）、雌型（７）の表面に圧着し成形は完了す
る。成形品は冷却後脱型する。Since the non-woven fabric (2) is not pressurized at the portion (13) where the mold gap is wide and the portion (15) where the mold gap is large as a compressed air passage, the compressed air is not fed. It is possible and the heated PP plates (1) on both sides of the molding material do not fuse together. When compressed air of about 3 kg / cm 2 is fed, each PP plate (1) of the molding material expands and press-bonds to the surfaces of the male mold (6) and the female mold (7) to complete the molding. The molded product is demolded after cooling.
【００２１】[0021]
【発明の効果】本発明は、以上説明したように構成され
ているので、以下に記載されるような効果を奏する。Since the present invention is constructed as described above, it has the following effects.
【００２２】熱可塑性合成樹脂板に熱可塑性合成樹脂繊
維の不織布を挟むことにより、汎用の圧空成形機に圧空
送入針装置を賦課するのみで中空構造を有する成形品を
１工程で簡単に製造することができる。By sandwiching a thermoplastic synthetic resin fiber non-woven fabric between thermoplastic synthetic resin plates, a molded product having a hollow structure can be easily manufactured in one step by only imposing a compressed air injection needle device on a general-purpose compressed air molding machine. can do.
【００２３】成形工程途中で樹脂板同志が融着すること
がないので、従来法ではできなかった複雑な深絞りの中
空構造の成形品ができる。Since the resin plates do not fuse together during the molding process, a molded product having a complicated deep-drawing hollow structure, which could not be obtained by the conventional method, can be obtained.
【００２４】任意の位置に中空補強リブを設けることが
できるので、安価に成形品の強度を増すことができる。Since the hollow reinforcing rib can be provided at an arbitrary position, the strength of the molded product can be increased at low cost.
【００２５】中空以外の部分は圧縮された不織布はサン
ドイッチ構造のコアー材になっているので、不織布の目
付け、見掛け比重、異種繊維との混紡、および型間隙を
選択することにより、目的に合せた性能のものができ
る。The non-hollow part is compressed, and the non-woven fabric is the core material of the sandwich structure. Therefore, the non-woven fabric is made to meet the purpose by selecting the unit weight of the non-woven fabric, the apparent specific gravity, the mixed spinning with different fibers, and the die gap. It can be of high performance.
【００２６】不織布の厚みを増すことにより中空の空洞
内の不織布の密度を高め、さらに断熱効果を附加するこ
とができる。By increasing the thickness of the non-woven fabric, the density of the non-woven fabric in the hollow cavity can be increased and a heat insulating effect can be added.
【図１】 成形材の構成を示す断面図FIG. 1 is a sectional view showing the structure of a molding material.
【図２】 成形材の構成を示す断面図FIG. 2 is a cross-sectional view showing the structure of a molding material.
【図３】 成形機の成形ステーション構想図[Figure 3] Conceptual diagram of molding station of molding machine
【図４】 成形品を下方より見た平面図FIG. 4 is a plan view of the molded product as seen from below.
【図５】 成形品のＡ・Ａ断面図[Fig. 5] A-A cross-sectional view of a molded product
【図６】 成形品断面のイ部分拡大図[Figure 6] Part A enlarged view of the cross section of the molded product
１ 樹脂板 ２ 不織布 ３ 接着フィルム ４ 成形材 ５ 成形機クランプ枠 ６ 成形雄型 ７ 成形雌型 ８ 成形機プレス上ベット ９ 成形機プレス下ベッ卜 １０ 成形型空気孔 １１ 圧空送入管 １２ 型間隙狭い部分 １３ 型間隙広い部分 １４ 空洞 １５ 空気通路 1 Resin Plate 2 Nonwoven Fabric 3 Adhesive Film 4 Molding Material 5 Molding Machine Clamp Frame 6 Molding Male Mold 7 Molding Female Mold 8 Molding Machine Press Upper Bed 9 Molding Machine Press Lower Bed 10 Mold Mold Air Hole 11 Pressure Air Feed Pipe 12 Mold Gap Narrow part 13 Type gap Wide part 14 Cavity 15 Air passage
Claims (2)
の熱可塑性合成樹脂繊維でできた不織布を挟み、成形可
能の温度に加熱し、雄、雌型に挟み、加圧すると同時に
不織布層に圧空を注入し、中空構造の成形品を成形する
方法。1. A non-woven fabric layer at the same time as sandwiching a non-woven fabric made of the same kind of thermoplastic synthetic resin fiber between two plates of thermoplastic synthetic resin, heating to a moldable temperature, sandwiching between male and female molds, and applying pressure. A method of injecting compressed air into a molded article to form a hollow molded article.
の熱可塑性合成樹脂繊維でできた不織布を挟み、その不
織布の両側に両樹脂に接着可能の感熱性接着フィルムを
挟み、成形可能の温度に加熱し、雄、雌型に挟み、加圧
すると同時に不織布層に圧空を注入し、中空構造の成形
品を成形する方法。2. A non-woven fabric made of different kinds of thermoplastic synthetic resin fibers is sandwiched between two plates of thermoplastic synthetic resin, and a thermosensitive adhesive film capable of adhering to both resins is sandwiched on both sides of the non-woven fabric to form a product. A method of molding a hollow structure molded article by heating to a temperature, sandwiching it between male and female molds, and applying pressure at the same time by injecting compressed air into the nonwoven fabric layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27910592A JP3363491B2 (en) | 1992-09-07 | 1992-09-07 | Molding method for making hollow structure by thermoforming synthetic resin plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27910592A JP3363491B2 (en) | 1992-09-07 | 1992-09-07 | Molding method for making hollow structure by thermoforming synthetic resin plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0687155A true JPH0687155A (en) | 1994-03-29 |
| JP3363491B2 JP3363491B2 (en) | 2003-01-08 |
Family
ID=17606491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27910592A Expired - Fee Related JP3363491B2 (en) | 1992-09-07 | 1992-09-07 | Molding method for making hollow structure by thermoforming synthetic resin plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3363491B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002059477A (en) * | 2000-08-22 | 2002-02-26 | Honda Motor Co Ltd | Resin panel and method for molding resin panel |
| JP2002166464A (en) * | 2000-09-25 | 2002-06-11 | Honda Motor Co Ltd | Method for molding resin panel |
| US6533475B2 (en) | 2000-05-24 | 2003-03-18 | Fuji Photo Film Co., Ltd. | Instant photo film pack and method for producing the same |
| US6792384B2 (en) | 2002-03-07 | 2004-09-14 | Fuji Photo Film Co., Ltd. | Method for producing fluid trap for film assemblage |
| US7185746B2 (en) | 2003-03-18 | 2007-03-06 | Honda Motor Co., Ltd. | Damper-mounting structure |
| JP2010005872A (en) * | 2008-06-25 | 2010-01-14 | Kyoraku Co Ltd | Composite resin molded article and its manufacturing method |
-
1992
- 1992-09-07 JP JP27910592A patent/JP3363491B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6533475B2 (en) | 2000-05-24 | 2003-03-18 | Fuji Photo Film Co., Ltd. | Instant photo film pack and method for producing the same |
| JP2002059477A (en) * | 2000-08-22 | 2002-02-26 | Honda Motor Co Ltd | Resin panel and method for molding resin panel |
| JP4509334B2 (en) * | 2000-08-22 | 2010-07-21 | 本田技研工業株式会社 | Molding method of resin panel |
| JP2002166464A (en) * | 2000-09-25 | 2002-06-11 | Honda Motor Co Ltd | Method for molding resin panel |
| JP4610109B2 (en) * | 2000-09-25 | 2011-01-12 | 本田技研工業株式会社 | Molding method of resin panel |
| US6792384B2 (en) | 2002-03-07 | 2004-09-14 | Fuji Photo Film Co., Ltd. | Method for producing fluid trap for film assemblage |
| US7185746B2 (en) | 2003-03-18 | 2007-03-06 | Honda Motor Co., Ltd. | Damper-mounting structure |
| JP2010005872A (en) * | 2008-06-25 | 2010-01-14 | Kyoraku Co Ltd | Composite resin molded article and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3363491B2 (en) | 2003-01-08 |
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