JPH0411089B2 - - Google Patents
Info
- Publication number
- JPH0411089B2 JPH0411089B2 JP61174287A JP17428786A JPH0411089B2 JP H0411089 B2 JPH0411089 B2 JP H0411089B2 JP 61174287 A JP61174287 A JP 61174287A JP 17428786 A JP17428786 A JP 17428786A JP H0411089 B2 JPH0411089 B2 JP H0411089B2
- Authority
- JP
- Japan
- Prior art keywords
- cloth
- skin material
- molded product
- mold
- synthetic resin
- 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
- 239000000463 material Substances 0.000 claims description 56
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 229920003002 synthetic resin Polymers 0.000 claims description 13
- 239000000057 synthetic resin Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 8
- 238000000465 moulding Methods 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 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
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、例えば自動車の内装材などとして用
いる布状表皮材を有する射出成形品の端末処理方
法に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a method for terminal treatment of an injection molded article having a cloth-like skin material used, for example, as an interior material of an automobile.
（従来の技術）
布状表皮材を有する射出成形品の製造にあたつ
ては、金型内に布状表皮材を配置し、その金型の
キヤビテイ内に溶融合成樹脂を射出して成形品本
体と布状表皮材を一体化し、表面に布状表皮材を
有する射出成形品を成形している。(Prior art) When manufacturing an injection molded product having a cloth-like skin material, the cloth-like skin material is placed in a mold, and molten synthetic resin is injected into the cavity of the mold to produce the molded product. The main body and the cloth-like skin material are integrated to form an injection molded product with the cloth-like skin material on the surface.
そして、この射出成形の際には、金型内に成形
品本体より大きめの布状表皮材を配置して成形品
本体の端末より布状表皮材の端末が張り出した状
態で成形を行ない、この成形と同時にあるいは成
形後の次工程においてその布状表皮材の端末の処
理を行なつている。 Then, during this injection molding, a cloth-like skin material larger than the molded product body is placed in the mold, and molding is performed with the end of the cloth-like skin material overhanging the end of the molded product body. The ends of the cloth-like skin material are treated at the same time as the molding or in the next step after the molding.
従来、この端末処理方法としては、例えば特開
昭60−220719号公報に示されるように、布状表皮
材の端末が成形品本体より張り出した状態で成形
し、その布状表皮材の端末における余剰分を成形
と同時あるいは成形後に切断して端末の切断仕上
げを行なつている。しかし、この方法によると、
布状表皮材であることから、切断により布状表皮
材の糸のほつれ等が生じて仕上げが悪く、フレー
ム処理等の二次的な処理を行なう必要がある。 Conventionally, as shown in Japanese Patent Application Laid-Open No. 60-220719, the conventional method for treating the ends of the cloth-like skin material is to mold the ends of the cloth-like skin material in a state that extends from the main body of the molded product, and to remove the ends of the cloth-like skin material. The excess portion is cut off at the same time or after molding to finish cutting the ends. However, according to this method,
Since it is a cloth-like skin material, the threads of the cloth-like skin material become frayed when cut, resulting in a poor finish and a secondary treatment such as frame treatment is required.
そこで、特開昭60−220719号公報に示されるよ
うに、布状表皮材の端末を成形品本体の内側に折
返して接着固定する方法が知られており、この方
法は、布状表皮材の切断が寛容でよいという作業
性の面から多用されている。しかし、この方法に
よると、布状表皮材の端末を成形品本体の内側に
折返して接着固定することから、作業者の熟練を
必要とし、また、折返しがきれいにできなかつた
り、はがれが生じる危険性がある。 Therefore, as shown in Japanese Patent Application Laid-Open No. 60-220719, a method is known in which the end of the cloth-like skin material is folded back inside the molded product body and fixed with adhesive. It is widely used because of its ease of cutting and ease of cutting. However, according to this method, the end of the cloth-like skin material is folded back inside the molded product body and fixed with adhesive, which requires the operator's skill, and there is a risk that folding cannot be done neatly or peeling may occur. There is.
（発明が解決しようとする問題点）
上記のように、従来の端末処理方法によると、
布状表皮材の端末の処理に難点があり、外観が損
われ易い問題がある。(Problems to be solved by the invention) As mentioned above, according to the conventional terminal processing method,
There is a problem in processing the ends of the cloth-like skin material, and the appearance is easily damaged.
本発明は、上述のような問題点に鑑みてなされ
たもので、布状表皮材の糸のほつれや端末のはが
れ等が発生することなく、布状表皮材の端末処理
を容易に行なえ、外観を良好にできる布状表皮材
を有する射出成形品の端末処理方法を提供するこ
とを目的とするものである。 The present invention has been made in view of the above-mentioned problems, and it is possible to easily process the ends of the cloth-like skin material without causing fraying of the threads or peeling of the ends of the cloth-like skin material, and improving the appearance. It is an object of the present invention to provide a method for terminal treatment of an injection molded product having a cloth-like skin material that can improve the quality of the material.
（問題点を解決するための手段）
本発明は、金型１内に布状表皮材７を配置し、
その金型１のキヤビテイ５内に溶融合成樹脂を射
出して布状表皮材７と成形品本体８を一体化した
表面に布状表皮材７を有する射出成形品におい
て、上記成形品本体８の端末に、上記布状表皮材
７の端末の糸間の〓間に溶融合成樹脂を浸透させ
て密着させる肉薄部９を一体的に射出成形し、そ
の肉薄部９と布状表皮材７の端末部を一体のまま
同時に切除するものである。
(Means for solving the problem) The present invention arranges a cloth-like skin material 7 in the mold 1,
In an injection molded product having a cloth-like skin material 7 on its surface, the cloth-like skin material 7 and the molded product body 8 are integrated by injecting molten synthetic resin into the cavity 5 of the mold 1. A thin part 9 is integrally injection-molded on the end of the cloth-like skin material 7, and the thin part 9 is brought into close contact with the threads of the cloth-like skin material 7 by infiltrating the gap between the threads at the end of the cloth-like skin material 7, and the thin part 9 and the end of the cloth-like skin material 7 are The two parts are removed at the same time as one piece.
（作 用）
本発明では、成形品本体８の端末に、布状表皮
材７の端末の糸間の〓間に溶融合成樹脂を浸透さ
せて強固に密着させた肉薄部９を一体的に成形
し、この肉薄部９と布状表皮材７の端末部とを一
体のまま同時に切除する。そのため、肉薄部９で
の切除を容易とし、布状表皮材７の糸のほつれや
はがれを防止する。(Function) In the present invention, a thin wall portion 9 is integrally formed at the end of the molded product main body 8 by infiltrating a molten synthetic resin between the threads at the end of the cloth-like skin material 7 to firmly adhere it. Then, the thin portion 9 and the end portion of the cloth-like skin material 7 are removed simultaneously while remaining integral. Therefore, the thin portion 9 can be easily cut, and the threads of the cloth-like skin material 7 can be prevented from fraying or peeling off.
（実施例）
以下、本発明の一実施例の構成を図面を参照し
て説明する。(Example) Hereinafter, the configuration of an example of the present invention will be described with reference to the drawings.
第１図において、１は金型で、スプルー２を有
する固定型３と可動型４とを対設し、この固定型
３と可動型４とが接合した際の内部間にキヤビテ
イ５およびこのキヤビテイ５の端末部に、固定型
３と可動型４の型割線に沿つて肉薄部成形空間６
が設けられている。 In FIG. 1, 1 is a mold, in which a fixed mold 3 having a sprue 2 and a movable mold 4 are disposed opposite each other, and a cavity 5 and a movable mold 4 are formed between the insides when the fixed mold 3 and the movable mold 4 are joined. A thin wall molding space 6 is formed at the end of the mold 5 along the parting line between the fixed mold 3 and the movable mold 4.
is provided.
そして、この金型１内に布状表皮材７がその布
状表皮材７の端末を固定型３および可動型４間に
挟持された状態で配置されている。 A cloth-like skin material 7 is placed in this mold 1 with the end of the cloth-like skin material 7 being sandwiched between a fixed mold 3 and a movable mold 4.
そうして、スプルー２から熱可塑性合成樹脂の
溶融合成樹脂を注入すると、この溶融合成樹脂
は、布状表皮材７を注入側とは反対の可動型４の
型面に密着させてキヤビテイ５および肉薄部成形
空間６内に充填される。 Then, when a molten thermoplastic synthetic resin is injected from the sprue 2, the molten synthetic resin brings the cloth-like skin material 7 into close contact with the mold surface of the movable mold 4 opposite to the injection side, and the mold surface of the movable mold 4, which is opposite to the injection side, is injected into the cavity 5 and the molten synthetic resin. The thin-walled portion molding space 6 is filled.
そして、適度な冷却期間を経て成形が完了し、
第２図に示すように、成形品本体８の表面に布状
表皮材７が一体化され、また、成形品本体８の端
末に肉薄部９が成形され、この肉薄部９の表面に
布状表皮材７の端末が一体化されている。 After a moderate cooling period, the molding is completed.
As shown in FIG. 2, a cloth-like skin material 7 is integrated on the surface of the molded product main body 8, and a thin wall portion 9 is formed at the end of the molded product main body 8, and a cloth-like skin material 7 is formed on the surface of the thin wall portion 9. The ends of the skin material 7 are integrated.
なお、溶融合成樹脂の注入時に、溶融合成樹脂
が布状表皮材７の糸間の〓間に浸透することによ
り、成形品本体８と布状表皮材７とが強固に密着
し、機械的結合強度が強固になる。これは、肉薄
部９と布状表皮材７の端末とについても同様であ
る。 Note that when the molten synthetic resin is injected, the molten synthetic resin penetrates between the threads of the cloth-like skin material 7, so that the molded product main body 8 and the cloth-like skin material 7 are tightly adhered to each other, resulting in a mechanical bond. Strength becomes solid. This also applies to the thin portion 9 and the end of the cloth-like skin material 7.
なお、例えばポリプロピレン等の流動性の良好
な合成樹脂は布状表皮材７の糸間の〓間への流入
性が良好である。 Note that a synthetic resin with good fluidity, such as polypropylene, has good flowability into the spaces between the threads of the cloth-like skin material 7.
そして、この一体化された肉薄部９と布状表皮
材７の端末部を、肉薄部９と成形品本体８との境
目あるいは肉薄部９の中間部分で肉薄部９と成形
品本体８との段差に沿つて、例えば加熱されたカ
ツターによつて一体に切断する。このとき、肉薄
部９が肉薄であるので、容易に切断することがで
きる。 Then, the end portion of the integrated thin part 9 and the cloth-like skin material 7 is connected to the thin part 9 and the molded product body 8 at the boundary between the thin part 9 and the molded product body 8 or at the intermediate part of the thin part 9. Cut it into one piece along the step, for example with a heated cutter. At this time, since the thin portion 9 is thin, it can be easily cut.
このようにして成形された射出成形品は、布状
表皮材７の糸間に合成樹脂が浸透しており、糸一
本毎について強固に固定されていることにより、
切断によつて布状表皮材７の糸のほつれやはがれ
等が生じることなく、端末をきれいに仕上げるこ
とができる。 The injection molded product formed in this way has synthetic resin infiltrated between the threads of the cloth-like skin material 7, and each thread is firmly fixed.
The ends can be neatly finished without fraying or peeling of the threads of the cloth-like skin material 7 due to cutting.
本発明によれば、成形品本体の端末に、布状表
皮材の端末の糸間の〓間に溶融合成樹脂を浸透さ
せて強固に密着させた肉薄部を一体的に成形し、
この肉薄部と布状表皮材の端末部とを一体のまま
同時に切除することにより、端末処理を容易に行
なえるとともに、布状表皮材の糸のほつれや端末
のはがれ等の発生を防止でき、端末の仕上げがき
れいな外観のよい製品を得ることができる。
According to the present invention, a thin part is integrally molded at the end of the molded product main body, and the thin part is made by infiltrating the molten synthetic resin between the threads of the end of the cloth-like skin material to firmly adhere to the end.
By simultaneously cutting off this thin part and the end portion of the cloth-like skin material while they are still integral, the end treatment can be easily carried out, and occurrences such as fraying of the threads of the cloth-like skin material and peeling of the ends can be prevented. It is possible to obtain a product with a beautiful terminal finish and a good appearance.
第１図は本発明の布状表皮材を有する射出成形
品の端末処理方法の一実施例を示す断面図、第２
図はその射出成形品の一部断面図である。
１…金型、５…キヤビテイ、７…布状表皮材、
８…成形品本体、９…肉薄部。
FIG. 1 is a cross-sectional view showing one embodiment of the method for end treatment of an injection molded product having a cloth-like skin material according to the present invention, and FIG.
The figure is a partial sectional view of the injection molded product. 1...Mold, 5...Cavity, 7...Cloth-like skin material,
8... Molded product body, 9... Thin wall part.
Claims (1)
ヤビテイ内に溶融合成樹脂を射出して成形品本体
と布状表皮材を一体化した表面に布状表皮材を有
する射出成形品において、 上記成形品本体の端末に、上記布状表皮材の端
末の糸間の〓間に溶融合成樹脂を浸透させて密着
させる肉薄部を一体的に射出成形し、 その肉薄部と布状表皮材の端末部を一体のまま
同時に切除する ことを特徴とする布状表皮材を有する射出成形品
の端末処理方法。[Scope of Claims] 1. A cloth-like skin material is placed in a mold, and a molten synthetic resin is injected into the cavity of the mold to form a cloth-like skin material on the surface of the molded product body and the cloth-like skin material integrated. In an injection molded product having a material, a thin part is integrally injection molded at the end of the molded product main body to allow a molten synthetic resin to penetrate between the threads of the end of the cloth-like skin material to make them adhere tightly. 1. A method for treating an end of an injection molded product having a cloth-like skin material, characterized by simultaneously cutting off a thin wall portion and an end portion of the cloth-like skin material while keeping them integral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17428786A JPS6330220A (en) | 1986-07-24 | 1986-07-24 | Treatment method of terminal of injection molded product having clothlike skin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17428786A JPS6330220A (en) | 1986-07-24 | 1986-07-24 | Treatment method of terminal of injection molded product having clothlike skin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6330220A JPS6330220A (en) | 1988-02-08 |
| JPH0411089B2 true JPH0411089B2 (en) | 1992-02-27 |
Family
ID=15976032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17428786A Granted JPS6330220A (en) | 1986-07-24 | 1986-07-24 | Treatment method of terminal of injection molded product having clothlike skin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6330220A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63212521A (en) * | 1987-03-02 | 1988-09-05 | Kasai Kogyo Co Ltd | Laminated molded product |
| JPH01153214U (en) * | 1988-04-13 | 1989-10-23 | ||
| JPH06114879A (en) * | 1992-09-30 | 1994-04-26 | Itoki Crebio Corp | Method and apparatus for manufacturing synthetic resin molded form covered with decorative sheet |
| AUPQ023799A0 (en) | 1999-05-07 | 1999-06-03 | Britax Rainsfords Pty Ltd | Method of producing a plastics moulded part including a film covering |
| CN101462337B (en) * | 2007-12-20 | 2013-01-09 | 深圳富泰宏精密工业有限公司 | Process for producing molded article |
| CN101462338B (en) * | 2007-12-21 | 2012-07-04 | 深圳富泰宏精密工业有限公司 | Process for producing molded article |
| JP6139597B2 (en) * | 2015-06-01 | 2017-05-31 | 森六テクノロジー株式会社 | Injection molded product and trimming method thereof |
| JP7093229B2 (en) * | 2018-05-30 | 2022-06-29 | 株式会社クラレ | Manufacturing method of decorative molded product |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54135856A (en) * | 1978-04-13 | 1979-10-22 | Yamashita Fishing Tackles | Production of button or like |
-
1986
- 1986-07-24 JP JP17428786A patent/JPS6330220A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54135856A (en) * | 1978-04-13 | 1979-10-22 | Yamashita Fishing Tackles | Production of button or like |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6330220A (en) | 1988-02-08 |
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