JPH0319047B2 - - Google Patents
Info
- Publication number
- JPH0319047B2 JPH0319047B2 JP21851483A JP21851483A JPH0319047B2 JP H0319047 B2 JPH0319047 B2 JP H0319047B2 JP 21851483 A JP21851483 A JP 21851483A JP 21851483 A JP21851483 A JP 21851483A JP H0319047 B2 JPH0319047 B2 JP H0319047B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- molded
- uneven
- molding
- nonwoven fabric
- 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
Links
- 229920005989 resin Polymers 0.000 claims description 35
- 239000011347 resin Substances 0.000 claims description 35
- 239000004745 nonwoven fabric Substances 0.000 claims description 20
- 238000000465 moulding Methods 0.000 claims description 18
- 229920000728 polyester Polymers 0.000 claims description 14
- 238000002844 melting Methods 0.000 claims description 11
- 238000001746 injection moulding Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 229920003002 synthetic resin Polymers 0.000 claims description 8
- 239000000057 synthetic resin Substances 0.000 claims description 8
- 239000004744 fabric Substances 0.000 description 24
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000037303 wrinkles Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- -1 Polypropylene Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000004749 staple nonwoven Substances 0.000 description 1
- 238000003856 thermoforming Methods 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2713/00—Use of textile products or fabrics for preformed parts, e.g. for inserts
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
この発明は、凹凸形状の樹脂本体に不織布が接
着された樹脂成形品の製造法に関し、たとえば、
片面に不織布が接着されたドアトリムなど自動車
用内装板の製造に適用できる樹脂成形品の製造方
法に係わるものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a resin molded article in which a nonwoven fabric is adhered to a resin body having an uneven shape.
The present invention relates to a method for manufacturing resin molded products that can be applied to manufacturing interior panels for automobiles, such as door trims, which have a nonwoven fabric adhered to one side.
従来、樹脂本体の表面に不織布が接着された凹
凸差のない単純形状の樹脂成形品は、射出成形に
より樹脂本体の成形と同時に不織布の接着が可能
であり、実施されているものである。しかしなが
ら、凹凸形状をなすものの射出成形においては、
不織布が成形凹部の凹凸形状になじまず、不織布
の接着不良となつたり、キレツ、シワ、ヤブレな
どが生じ良好な成形品が得られない欠点があつ
た。このため凹凸差のある形状のものは、予じめ
所定の凹凸形状に不織布を成形し、これを成形型
に装着した後に、本体を射出成形する面倒な工程
にて行なわれている欠点があつた。 Conventionally, a simple shaped resin molded product with no difference in unevenness, in which a nonwoven fabric is bonded to the surface of a resin body, has been produced by injection molding, which allows the bonding of the nonwoven fabric to be carried out simultaneously with the molding of the resin body. However, in injection molding of things with uneven shapes,
The non-woven fabric does not adapt to the uneven shape of the molding recesses, resulting in poor adhesion of the non-woven fabric, cracks, wrinkles, and tearing, which prevents a good molded product from being obtained. For this reason, products with uneven shapes have the disadvantage that the nonwoven fabric is molded into a predetermined uneven shape in advance, and after this is mounted on a mold, the main body is injection molded. Ta.
本発明の目的は、上述した従来欠点を解消しよ
うとしたものであつて、凹凸形状の樹脂本体に不
織布が接着成形された樹脂成形品を射出成形によ
り同時成形し得る、樹脂成形品の製造法を提供す
ることにある。また、本発明の他の目的は、凹凸
差の大きい、いわゆる深しぼり形状のものであつ
ても、不織布の接着成形とともに凹凸形状の樹脂
本体が射出成形し得る、凹凸状樹脂成形品の製造
法を提供することにある。 An object of the present invention is to solve the above-mentioned conventional drawbacks, and is to provide a method for producing a resin molded article, in which a resin molded article in which a nonwoven fabric is adhesively molded onto an uneven resin body can be simultaneously molded by injection molding. Our goal is to provide the following. Another object of the present invention is a method for manufacturing an uneven resin molded article, in which a resin body having an uneven shape can be injection molded together with adhesive molding of a nonwoven fabric, even if the article has a so-called deep drawing shape with a large difference in unevenness. Our goal is to provide the following.
次に本発明の実施例を、図面を参照して説明す
る。図において、１は射出成形用の凹型であつ
て、との合せ面４には所定の凹部２が形成され、
該凹部２には合成樹脂を圧入する注入孔５が形成
されている。６は前記凹型１に組合せする凸型で
あつて、その合せ面９には所定の凸部７が形成さ
れている。なお、凹型１及び凸型６は図示しない
支持部材にて支持されていて適宜に移動可能であ
る。 Next, embodiments of the present invention will be described with reference to the drawings. In the figure, 1 is a concave mold for injection molding, and a predetermined concave portion 2 is formed on the mating surface 4,
An injection hole 5 into which a synthetic resin is press-fitted is formed in the recess 2 . 6 is a convex mold to be combined with the concave mold 1, and a predetermined convex portion 7 is formed on the mating surface 9 thereof. Note that the concave mold 1 and the convex mold 6 are supported by a support member (not shown) and can be moved as appropriate.
しかして成形面３，８を対向させて配置した凹
型１及び凸型６間には成形面３，８を覆う大きさ
の不織布が配置され図示しない支持部材にて支持
される。前記不織布としては伸縮性を有するステ
ツチクロス１０が使用される。 A nonwoven fabric large enough to cover the molding surfaces 3 and 8 is placed between the concave mold 1 and the convex mold 6, which are arranged so that the molding surfaces 3 and 8 face each other, and is supported by a support member (not shown). As the nonwoven fabric, a stretchable stitch cloth 10 is used.
ステツチクロス１０はポリエステルバインダー
を利用したポリエステルステープル不織布をポリ
エステルフイラメントでステツチしたポリエステ
ル100％よりなるものである。このものは通常の
ポリエステル繊維（融点259〜263℃）に低融点
（融点110℃〜200℃）のポリエステル繊維を10〜
50％配合してステツチされていて、目付量は50〜
500ｇ／m2である。なお、内装板なの樹脂成形品
としての風合上からは目付量が200〜350ｇ／m2程
度のものが望ましい。ステツチクロス１０におけ
る低融点ポリエステル繊維は、加熱時の伸びが大
きいため曲率半径の小さい凹凸部によくなじみ、
高融点のポリエステル繊維は形状保持性が高いの
で加熱成形の際に極めて都合がよいものである。 The stitch cloth 10 is made of 100% polyester, which is obtained by stitching a polyester staple nonwoven fabric using a polyester binder with polyester filament. This product consists of regular polyester fibers (melting point 259-263℃) and low-melting point polyester fibers (melting point 110℃-200℃).
It is stitched with a 50% blend, and the basis weight is 50~
It is 500g/ m2 . In addition, from the viewpoint of the feel of the interior board as a resin molded product, it is desirable that the basis weight be about 200 to 350 g/m 2 . The low melting point polyester fiber in Stitch Cloth 10 has a large elongation when heated, so it fits well into irregularities with a small radius of curvature.
High melting point polyester fibers have high shape retention properties and are therefore extremely convenient for thermoforming.
次いで、凹型１の凹部２と、凸型６の凸部７と
を組合せ、ステツチクロス１０が介装された状態
の成形凹部２Ａを形成し、凹型１の注入孔５には
樹脂注入機の射出口１１を接続（第２図参照）し
て溶融状態の合成樹脂を射出し（第３図参照）、
冷却し、脱型して成形品１３Ａを得る。成形品１
３Ａは射出された溶融樹脂１２と、溶融樹脂１２
に成形とともに接着された成形クロス１０Ａとよ
りなる。 Next, the concave part 2 of the concave mold 1 and the convex part 7 of the convex mold 6 are combined to form a molding concave part 2A in which the stitch cloth 10 is interposed, and the injection hole 5 of the concave mold 1 is connected to the injection port of a resin injection machine. 11 (see Figure 2) and inject the molten synthetic resin (see Figure 3).
The molded product 13A is obtained by cooling and demolding. Molded product 1
3A is the injected molten resin 12 and the molten resin 12
The molded cloth 10A is molded and bonded to the molded cloth 10A.
しかして、本例では融点120℃のポリエステル
と、融点260℃のポリエステルとの、80：20の混
合品をステツチ組成がチエインコードGauge／
Course＝85／21でステツチした目付量200ｇ／m2
のステツチクロス「オリビア」（ユニチカKK製
造、商標名）を使用し、成形凹部２Ａには樹脂温
220℃のポリプロピレンを射出圧150Kg／cm2で射出
し、冷却30秒後に凹型１及び凸型６を開いて成形
品１３Ａを取出した。取出した成形品１３Ａは片
面の全体にステツチクロス１０が接着成形され、
かつステツチクロス１０が成形凹部２Ａの形状に
なじみ、曲げ部分においても樹脂に追従してお
り、キレツ、シワ、ヤブレの部分のない良好なも
のであつた。次いで成形品１３Ａにおける、注入
孔５跡の突出樹脂部１２Ｂ及び樹脂本体１２Ａよ
りはみ出したステツチクロス１０の部分を切除し
て所定形の樹脂成形品１３を得る。 Therefore, in this example, a mixture of 80:20 polyester with a melting point of 120°C and a polyester with a melting point of 260°C was stitched with a chain code Gauge/
Fabric weight stitched with Course=85/21 200g/m 2
The stitching cloth "Olivia" (manufactured by Unitika KK, trade name) is used, and the resin temperature is applied to the molding recess 2A.
Polypropylene at 220° C. was injected at an injection pressure of 150 kg/cm 2 , and after cooling for 30 seconds, the concave mold 1 and the convex mold 6 were opened to take out the molded product 13A. The removed molded product 13A has stitch cloth 10 adhesively molded on the entire one side.
In addition, the stitch cloth 10 conformed to the shape of the molded recess 2A, followed the resin even in the bent portion, and was in good condition with no cracks, wrinkles, or torn portions. Next, in the molded product 13A, the protruding resin portion 12B where the injection hole 5 remains and the portion of the stitch cloth 10 protruding from the resin body 12A are cut off to obtain a resin molded product 13 of a predetermined shape.
本例のステツチクロス１０は縦横に伸縮性を有
するものであるので樹脂の射出成形の際に成形凹
部２Ａの凹凸形状に追従し、成形凹部２Ａが凹凸
形状の大きい、深絞りのものであつても、成形面
に充分に追従し樹脂本体に接着された樹脂成形品
を得ることができる。 Since the stitching cloth 10 of this example has elasticity in the vertical and horizontal directions, it follows the uneven shape of the molded recess 2A during injection molding of resin, and even if the molded recess 2A is deep drawn and has a large uneven shape. , it is possible to obtain a resin molded product that fully follows the molding surface and is adhered to the resin body.
得られた樹脂成形品１３は成形クロス１０Ａ部
分の風合いが良好であり、自動車用の内装板とさ
れる。 The obtained resin molded product 13 has a good texture in the molded cloth 10A portion, and is used as an interior panel for an automobile.
以上説明したように本発明は、凹凸形状の樹脂
本体の凹凸面に不織布が接着された樹脂成形品を
製造するに際し、伸縮性を有するステツチクロス
を前記非織布として用い、該不織布を成形型の凹
凸形状の成形凹部内に介在せしめ、しかる跡に前
記成形凹部内に合成樹脂を射出成形するようにし
たため、本発明の前記した所期の目的が達成され
るものである。すなわち、本発明においては融点
約260℃のポリエステル繊維に融点約110〜200℃
のポリエステル繊維約10〜50％を配合せしめた伸
縮性の良好なステツチクロスを前記不織布として
使用するようにしたので、成形型の成型凹部内に
介在させた不織布は合成樹脂の射出成形の際の圧
入樹脂によつて成形凹部の凹凸状成形面に密着さ
れ、密着状態にて合成樹脂と接着され、ステツチ
クロスが接着成形された凹凸状樹脂成形品が得ら
れるものである。そしてステツチクロスは伸縮性
を有するものであるため、成形凹部の凹凸状成形
面に密着可能であり、凹凸差の大きい深しぼりの
射出成形においても、ステツチクロスは成形面に
よくなじみ、ステツチクロスのキレツ、シワ、ヤ
ブレのない良好な凹凸状樹脂成形品が得られる。
しかして、本発明によれば射出成形により、ステ
ツチクロスを同時成形し得るので、予じめ不織布
を成形した跡に本体を成形する従来工程に較べ、
工程数が省略でき都合がよい。 As explained above, when manufacturing a resin molded article in which a nonwoven fabric is adhered to the uneven surface of a resin body having an uneven shape, a stretchable stitch cloth is used as the nonwoven fabric, and the nonwoven fabric is placed in a mold. The above-mentioned object of the present invention is achieved because the synthetic resin is inserted into the uneven molded recess and the synthetic resin is then injection molded into the molded recess. That is, in the present invention, polyester fibers with a melting point of about 260°C have a melting point of about 110 to 200°C.
Stitch cloth with good elasticity and containing about 10 to 50% of polyester fibers is used as the non-woven fabric, so the non-woven fabric inserted into the molding recess of the mold can be press-fitted during injection molding of synthetic resin. The resin molded product is closely attached to the uneven molding surface of the molding recess and adhered to the synthetic resin in close contact with the resin, thereby obtaining an uneven resin molded article on which the stitch cloth is adhesively molded. Since the stitch cloth has elasticity, it can adhere to the uneven molding surface of the molding recess, and even in deep-drawing injection molding with a large difference in unevenness, the stitch cloth conforms well to the molding surface and eliminates the sharpness and wrinkles of the stitch cloth. , a good uneven resin molded product without tearing can be obtained.
According to the present invention, the stitch cloth can be simultaneously molded by injection molding, compared to the conventional process in which the main body is molded on the spot where the nonwoven fabric has been molded in advance.
It is convenient because the number of steps can be omitted.
図は本発明の実施例を示すものであつて、第１
図は射出成形用の凹型及び凸型間にステツチクロ
スを配置した状態の準備工程図、第２図はステツ
チクロス介在状態において、凹型及び凸型を組合
せて成形凹部を形成した型組み工程図、第３図は
成形凹部に合成樹脂を射出する射出工程図、第４
図は成形品を脱型した脱型工程図、第５図は製品
化された成形品の形状説明図である。
１……凹型、２……凹部、５……注入孔、６…
…凸型、７……凸部、１０……ステツチクロス、
１０Ａ……成形クロス、１２Ａ……樹脂本体、１
３……樹脂成形品、１３Ａ……成形品。
The figure shows an embodiment of the present invention.
The figure is a preparation process diagram with a stitch cloth placed between a concave mold and a convex mold for injection molding, Figure 2 is a mold assembly process diagram in which a concave mold and a convex mold are combined to form a molding recess with the stitch cloth interposed, and Figure 3 The figure is an injection process diagram for injecting synthetic resin into the molding recess, No. 4.
The figure is a demolding process diagram of demolding the molded product, and FIG. 5 is an explanatory diagram of the shape of the manufactured molded product. 1... Concave type, 2... Concave portion, 5... Injection hole, 6...
...Convex shape, 7...Convex part, 10...Stitch cloth,
10A...Molding cloth, 12A...Resin body, 1
3... Resin molded product, 13A... Molded product.
Claims (1)
された樹脂成形品を製造するに際し、融点約260
℃のポリエステル繊維に融点約110〜200℃のポリ
エステル繊維約10〜50％を配合せしめた伸縮性の
ステツチクロスを前記不織布として用い、該不織
布を成形型の凹凸形状の成形凹部内に介在せし
め、しかる後に前記成形凹部内に合成樹脂を射出
成形することを特徴とした凹凸状樹脂成形品の製
造法。1. When manufacturing a resin molded product in which a nonwoven fabric is adhered to the uneven surface of a resin body with an uneven shape, the melting point is approximately 260.
℃ polyester fibers mixed with about 10 to 50% polyester fibers with a melting point of about 110 to 200 degrees Celsius is used as the nonwoven fabric, and the nonwoven fabric is interposed in the uneven molding recesses of the mold, and then A method for producing an uneven resin molded article, which comprises subsequently injection molding a synthetic resin into the molded recesses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21851483A JPS60109814A (en) | 1983-11-18 | 1983-11-18 | Preparation of uneven resin molded piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21851483A JPS60109814A (en) | 1983-11-18 | 1983-11-18 | Preparation of uneven resin molded piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60109814A JPS60109814A (en) | 1985-06-15 |
| JPH0319047B2 true JPH0319047B2 (en) | 1991-03-14 |
Family
ID=16721116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21851483A Granted JPS60109814A (en) | 1983-11-18 | 1983-11-18 | Preparation of uneven resin molded piece |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60109814A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04114366U (en) * | 1991-03-28 | 1992-10-08 | 美津濃株式会社 | Kyaday Batsugu |
| NL1023365C2 (en) * | 2003-05-08 | 2004-11-09 | Fountain Patents B V | Method and device for manufacturing vehicle parts. |
-
1983
- 1983-11-18 JP JP21851483A patent/JPS60109814A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60109814A (en) | 1985-06-15 |
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