JPS62214926A - Vacuum molding method for foaming material - Google Patents
Vacuum molding method for foaming materialInfo
- Publication number
- JPS62214926A JPS62214926A JP5695586A JP5695586A JPS62214926A JP S62214926 A JPS62214926 A JP S62214926A JP 5695586 A JP5695586 A JP 5695586A JP 5695586 A JP5695586 A JP 5695586A JP S62214926 A JPS62214926 A JP S62214926A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- foaming material
- towel
- vacuum molding
- vacuum
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005187 foaming Methods 0.000 title claims abstract description 10
- 238000000465 moulding Methods 0.000 title abstract description 16
- 239000000463 material Substances 0.000 title abstract description 13
- 239000006260 foam Substances 0.000 claims description 30
- 239000004744 fabric Substances 0.000 claims description 26
- 238000007666 vacuum forming Methods 0.000 claims description 16
- 239000004831 Hot glue Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 abstract description 5
- 239000011347 resin Substances 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 4
- 239000002648 laminated material Substances 0.000 abstract 4
- 229920000098 polyolefin Polymers 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 16
- 230000001070 adhesive effect Effects 0.000 description 16
- -1 polyethylene Polymers 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 4
- 229920005672 polyolefin resin Polymers 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、発泡体並びに布帛状シートを損なうことなく
真空成形する方法、特に深絞り成形が容易な発泡体の真
空成形方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for vacuum forming foams and fabric sheets without damaging them, and particularly to a method for vacuum forming foams that facilitates deep drawing.
従来、ポリエチレン、ポリプロピレンに代表されるポリ
オレフィン系樹脂、ポリ塩化ビニル系樹脂などからなる
発泡体は、その表面に布帛状シートを表皮材として積層
接合した形で成形製品とされることが多い。Conventionally, foams made of polyolefin resins such as polyethylene and polypropylene, polyvinyl chloride resins, etc., are often made into molded products by laminating and bonding a fabric sheet on the surface as a skin material.
しかしながら、発泡体面または布帛状シート面に液状の
接着剤を塗布または含浸して両者を接合したのち真空成
形すると、上記接着剤により布帛状シートの伸びが低下
しているため布帛状シートの変形に対する自由度が低下
し、深絞り成形が困難になるのみならず、発泡体層が破
壊し易くなり、良好な品質、性能の成形製品の収率が低
下するという問題があった。However, if a liquid adhesive is applied or impregnated on the foam surface or the fabric sheet surface and the two are bonded together, then vacuum forming is performed, the elongation of the fabric sheet is reduced by the adhesive, so it is difficult to prevent the fabric sheet from deforming. There is a problem in that the degree of freedom is reduced, making deep drawing difficult, and the foam layer becomes easy to break, reducing the yield of molded products with good quality and performance.
本発明の目的は、上記真空成形、特に深絞り成形時にお
ける布帛状シートの変形に対する自由度を大きくし、発
泡体層の破壊を防止することができる優れた成形性を有
する発泡体の真空成形方法を提供するにある。The purpose of the present invention is to provide vacuum forming of a foam having excellent formability that can increase the degree of freedom for deformation of a fabric sheet during the vacuum forming, particularly deep drawing, and prevent destruction of the foam layer. We are here to provide you with a method.
このような本発明の目的は、発泡体と布帛状シートとを
重ね合わせて積層体にし、該積層体の布帛状シート面を
成形金型上に載置して真空成形する方法によって達成す
ることができる。Such an object of the present invention is achieved by a method in which a foam and a fabric sheet are superimposed to form a laminate, and the fabric sheet surface of the laminate is placed on a molding die and vacuum formed. I can do it.
以下、図面により本発明の成形加工法を具体的に説明す
る。Hereinafter, the molding method of the present invention will be specifically explained with reference to the drawings.
図は、本発明になる発泡体の真空成形加工法の一例を示
す説明図である。図においてｌは発泡体、２は布帛状シ
ート、３はこの発泡体１と布帛状シート２からなる積層
体である。一方、４は成形金型で、表面に成形用の凹凸
部４ａを有し、かつその凹凸部４ａを真空状態にするよ
うに、バルブ５を介して真空源に接続されている。真空
成形するときは、上記積層体３をその布帛状シート２側
の面を成形金型４の凹凸部４ａに接して載置され、バル
ブ５を開くことにより真空成形される。The figure is an explanatory view showing an example of the vacuum forming method for a foam according to the present invention. In the figure, 1 is a foam, 2 is a fabric sheet, and 3 is a laminate consisting of the foam 1 and the fabric sheet 2. On the other hand, numeral 4 denotes a molding die, which has an uneven portion 4a for molding on its surface, and is connected to a vacuum source via a valve 5 so as to bring the uneven portion 4a into a vacuum state. When performing vacuum forming, the laminate 3 is placed with its surface facing the fabric sheet 2 in contact with the uneven portion 4a of the molding die 4, and the valve 5 is opened to perform vacuum forming.
本発明に用いられる発泡体はしては、たとえばポリエチ
レン、ポリプロピレン、ポリブチレンおよびそれらの共
重合体などのポリオレフィン系樹脂、ポリ塩化ビニル系
樹脂などからなる独立気泡を有する架橋発泡体を例示す
ることができるが、好ましくはポリオレフィン系樹脂発
泡体に対して優れた効果を奏する。Examples of the foam used in the present invention include crosslinked foams having closed cells made of polyolefin resins such as polyethylene, polypropylene, polybutylene, and copolymers thereof, and polyvinyl chloride resins. However, it preferably shows excellent effects on polyolefin resin foams.
また、積層体３を構成する布帛状シート２としては、発
泡体１を機械的に補強し、外観を多様化するものであれ
ば何でもよいが、好ましくは真空成形性を考慮し、目付
が１５０〜４００ｇ／ｒｒｆ、ｌ ｋｇ ／ ｃｍ幅の
低荷重時伸びがタテ方向、ヨコ方向とも１５〜６０％の
範囲のものが好ましい。Further, as the fabric sheet 2 constituting the laminate 3, any material may be used as long as it mechanically reinforces the foam 1 and diversifies the appearance, but preferably the fabric sheet 2 has a basis weight of 150 mm in consideration of vacuum formability. -400 g/rrf, l kg/cm width, elongation under low load is preferably in the range of 15 to 60% in both the vertical and horizontal directions.
上記積層体の接着をより強固にする上では、接着剤を用
いることが好ましいが、本発明の成形方法においては、
布帛シートの伸びを低下させ、変形に対する自由度を低
下させるような接着剤の使用、すなわち前記の液状接着
剤の塗布、含浸などは避ける必要があり、あらかじめ固
化されたもの、たとえばフィルム状または粉末状のホッ
トメルト型接着剤を発泡体と布帛状シートとの間に介在
させて使用するか、或いは液状の接着剤を使用する場合
は、該液状接着剤をあらかじめ発泡体面の表面に塗布し
、成形する前に接着剤を固化させて、ホントメルト性を
有する接着剤層を形成させておくのがよい。In order to further strengthen the adhesion of the laminate, it is preferable to use an adhesive, but in the molding method of the present invention,
The use of adhesives that reduce the elongation of the fabric sheet and reduce its freedom for deformation, i.e. the application, impregnation, etc. of liquid adhesives as mentioned above, should be avoided, and the use of pre-hardened ones, e.g. in film or powder form, should be avoided. When using a hot melt adhesive between the foam and the fabric sheet, or when using a liquid adhesive, apply the liquid adhesive to the surface of the foam in advance, It is preferable to solidify the adhesive before molding to form an adhesive layer having true melt properties.
このようなフィルム状または粉末状接着剤の例としては
、耐熱性ウレタンフィルム、エチレン−酢酸ビニル共重
合体系フィルム、アクリル系ホットメルトフィルム、お
よびポリオレフィン系樹脂フィルムなどがあり、固化し
た後ホットメルト性を示す液状接着剤の例としては、ク
ロロプレン系接着剤他のゴム系接着剤、ポリエステル系
またはウレタン系接着剤などを例示することができる。Examples of such film-like or powder-like adhesives include heat-resistant urethane films, ethylene-vinyl acetate copolymer films, acrylic hot-melt films, and polyolefin resin films, which have hot-melt properties after solidification. Examples of liquid adhesives exhibiting the above include chloroprene adhesives, other rubber adhesives, polyester adhesives, and urethane adhesives.
なお、本発明の好ましい真空成形条件としては、たとえ
ば発泡体がポリエチレン樹脂の場合は、発泡倍率が５〜
４０倍であり、布帛状シートがポリエステル系長繊維不
織布の場合には、目付が１５０〜４００ｇ／ｒｄである
ことが好ましい。In addition, as preferable vacuum forming conditions of the present invention, for example, when the foam is made of polyethylene resin, the foaming ratio is 5 to 5.
40 times, and when the fabric sheet is a polyester long fiber nonwoven fabric, the basis weight is preferably 150 to 400 g/rd.
本発明の真空成形方法は、真空成形性に優れ、発泡体の
破損を実質的に防止して、容易に深絞り成形ができると
いう特徴を有する。したがって、複雑な構造を有する成
形金型に対しても優れた真空成形が可能となり、多様な
形状、形態の成形製品を成形できるので、その工業的意
義は極めて大きい。The vacuum forming method of the present invention has excellent vacuum formability, substantially prevents breakage of the foam, and is characterized by easy deep drawing. Therefore, it is possible to perform excellent vacuum forming even with a molding die having a complicated structure, and molded products of various shapes and forms can be molded, which has extremely great industrial significance.
以下、本発明の効果を実施例により具体的に説明する。 Hereinafter, the effects of the present invention will be specifically explained using examples.
実施例１
２５倍発発泡、５−厚あ架橋ポリプレピレン樹脂発泡体
にポリエステル系長繊維（目付１５０ｇ／ｍ）を重ね合
わせカメラケース内張り用として凸型金型を使用して真
空成形した。Example 1 Polyester long fibers (fabric weight: 150 g/m) were superimposed on a 25 times expanded, 5-thick crosslinked polypropylene resin foam and vacuum formed using a convex mold as a camera case lining.
金型面側が布帛面になる上うにし、遠赤外線ヒータによ
り両面加熱で加熱する。発泡体側に強加熱を施しその時
の材料表面温度を１６０℃に加熱した。布帛側表面温度
は１００ ℃になるようにコントロールした。加熱後金
型をつき上げ真空圧７６０ｗｍＨｇで真空成形した結果
、表皮材の布帛のシワ発生もなく美れいな製品が得られ
た。The fabric side is placed on the side of the mold, and heated on both sides using a far-infrared heater. Strong heating was applied to the foam side to bring the surface temperature of the material to 160°C. The surface temperature of the fabric side was controlled to be 100°C. After heating, the mold was raised and vacuum forming was performed at a vacuum pressure of 760 wmHg. As a result, a beautiful product was obtained with no wrinkles in the fabric of the skin material.
かつ布帛と発泡体の接着強度もほぼ材質破壊程度に融着
しており実用上問題のないものが得られた。In addition, the adhesive strength between the fabric and the foam was almost at the level of material destruction, and there was no problem in practical use.
実施例２
１３倍発発泡、０鶴厚の架橋ポリエチレン樹脂発泡体に
あらかじめエチレン−酢酸ビニル系接着フィルムを装着
した面にポリエステル系長繊維（目付３００ｇ／％）を
重ね合わせ実施例１と同じ条件で成形加工した。布帛の
シワ発生もな（美れいな製品が得られ、かつ布帛と発泡
体の接着強度は発泡体が材質破壊するほど接着されてい
た。Example 2 Polyester long fibers (basis weight 300 g/%) were superimposed on the surface of a cross-linked polyethylene resin foam with 13 times expansion and zero thickness, on which an ethylene-vinyl acetate adhesive film was attached in advance, under the same conditions as Example 1. It was molded with. There were no wrinkles in the fabric (a beautiful product was obtained, and the adhesive strength between the fabric and the foam was such that the foam was damaged).
図は、本発明による発泡体の真空成形加工法の一例を示
す説明図である。
■・・・発泡体、２・・・布帛状シート、３・・・積層
体、４・・・成形金型。The figure is an explanatory view showing an example of the vacuum forming method for a foam according to the present invention. ■... Foam, 2... Fabric-like sheet, 3... Laminate, 4... Molding mold.
Claims (1)
、該積層体の布帛状シート面を成形金型上に載置して真
空成形することを特徴とする発泡体の真空成形加工法。 ２、特許請求の範囲第１項において、発泡体と布帛状シ
ートとの間にホットメルト型接着剤を介在せしめること
を特徴とする発泡体の真空成形加工方法。[Claims] 1. Foaming characterized by stacking a foam and a fabric sheet to form a laminate, and placing the fabric sheet surface of the laminate on a mold for vacuum forming. Vacuum forming process for the body. 2. A method for vacuum forming a foam according to claim 1, characterized in that a hot-melt adhesive is interposed between the foam and the fabric sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5695586A JPS62214926A (en) | 1986-03-17 | 1986-03-17 | Vacuum molding method for foaming material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5695586A JPS62214926A (en) | 1986-03-17 | 1986-03-17 | Vacuum molding method for foaming material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62214926A true JPS62214926A (en) | 1987-09-21 |
Family
ID=13041965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5695586A Pending JPS62214926A (en) | 1986-03-17 | 1986-03-17 | Vacuum molding method for foaming material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62214926A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635219A (en) * | 2022-03-31 | 2022-06-17 | 业成科技（成都）有限公司 | Buffer material layer, die pressing jig and pressing process method |
-
1986
- 1986-03-17 JP JP5695586A patent/JPS62214926A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635219A (en) * | 2022-03-31 | 2022-06-17 | 业成科技（成都）有限公司 | Buffer material layer, die pressing jig and pressing process method |
| CN114635219B (en) * | 2022-03-31 | 2023-09-05 | 业成科技（成都）有限公司 | Buffer material layer, mould pressing jig and pressing process method |
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