JPH03207620A - Decorative injection molded body - Google Patents
Decorative injection molded bodyInfo
- Publication number
- JPH03207620A JPH03207620A JP153190A JP153190A JPH03207620A JP H03207620 A JPH03207620 A JP H03207620A JP 153190 A JP153190 A JP 153190A JP 153190 A JP153190 A JP 153190A JP H03207620 A JPH03207620 A JP H03207620A
- Authority
- JP
- Japan
- Prior art keywords
- molded body
- adhesive
- injection molded
- decorating
- substrate
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 21
- 239000007924 injection Substances 0.000 title claims abstract description 21
- 239000000853 adhesive Substances 0.000 abstract description 16
- 230000001070 adhesive effect Effects 0.000 abstract description 16
- 229920005989 resin Polymers 0.000 abstract description 12
- 239000011347 resin Substances 0.000 abstract description 12
- 239000012530 fluid Substances 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 abstract 4
- 239000000463 material Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920005992 thermoplastic resin 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
-
- 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
- B29C45/14811—Multilayered articles
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
- B29C2043/026—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface having functional projections, e.g. fasteners
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding 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、自動車のエンブレム、ネームプレート等のよ
うに、成形体基盤上面に文字、模様等の装飾用凸部を有
し、下面を接着して使用される装飾用の射出成形体に関
する。[Detailed Description of the Invention] [Industrial Application Field] The present invention has decorative protrusions such as letters and patterns on the upper surface of a molded body base, such as automobile emblems and name plates, and the lower surface is bonded. This invention relates to decorative injection molded articles used as decorations.
［従来技術］
従来、自動車のエンブレム、ネームプレート等の装飾用
の射出戒形体としては、次のような構造のものが知られ
ている。[Prior Art] Conventionally, the following structure is known as an injection molding body for decoration of automobile emblems, name plates, etc.
（１）第３図に示されるように、成形体基盤上面に中実
の装飾用凸部が設けられている一体構造の成形体であり
、成形体基盤下面に接着剤を設けたもの。(1) As shown in FIG. 3, this is a molded body with an integral structure in which a solid decorative convex portion is provided on the upper surface of the molded body base, and an adhesive is provided on the lower surface of the molded body base.
（２）第４図に示されるように、装飾用凸部の裏側部分
だけ成形体基盤がくり抜かれており、くり抜かれた空間
部７も含めて成形体基盤下面に接着剤を設けたもの。(2) As shown in FIG. 4, the molded base is hollowed out only on the back side of the decorative convex portion, and an adhesive is provided on the lower surface of the molded base, including the hollowed-out space 7.
［発明が解決しようとする課題］
しかしながら、上記従来の装飾用射出成形体では次のよ
うな問題が残されている。[Problems to be Solved by the Invention] However, the following problems remain in the above-mentioned conventional injection molded decorative article.
（１）の射出戒形体は、中実の装飾用凸部が設けられて
いる部分が他の部分より厚いため、該凸部の溶融樹脂の
冷却固化が他の部分より遅くなる。In the injection molded body (1), the portion where the solid decorative convex portion is provided is thicker than the other portions, so that the molten resin in the convex portion cools and solidifies more slowly than the other portions.
このため、溶融樹脂の収縮が装飾用凸部の上面と成形体
基盤下面に集中し、第３図の破線のようなヒケが発生し
、外観不良が生じる。また、接着剤が設けられている接
着面と、被接着素材との間に成形体基盤下面のヒケのた
めに空間ができるため、接着力が弱まる。For this reason, the contraction of the molten resin concentrates on the upper surface of the decorative convex portion and the lower surface of the molded body base, causing sink marks as indicated by the broken line in FIG. 3, resulting in poor appearance. Furthermore, a space is created between the bonding surface on which the adhesive is provided and the material to be bonded due to sink marks on the lower surface of the molded body base, which weakens the bonding force.
（２）の戒形体はヒケ防止のために、装飾用凸部が設け
られている裏側部分だけ凸部の形状に沿って成形体基盤
がくり抜かれて、成形体基盤に大きな空間部７ができる
ため、空間部７も含めて成形体基盤に設けられた接着剤
は、空間部７の部分だけ押圧力がないため、接着力が弱
まる。In order to prevent sink marks in (2), the base of the molded body is hollowed out along the shape of the convex part only on the back side where the decorative convex part is provided, creating a large space 7 in the base of the molded body. Therefore, the adhesive provided on the molded body base including the space 7 has no pressing force only in the space 7, so the adhesive force is weakened.
［問題を解決するための手段］
前記問題を解決するために、本発明で講じられた手段は
、成形体基盤上面に装飾用凸部を有し、この装飾用凸部
内が中空部となっていることを特徴とする射出成形体と
するものである。[Means for Solving the Problem] In order to solve the above-mentioned problem, the means taken in the present invention is to have a decorative convex portion on the upper surface of the molded body base, and the interior of the decorative convex portion is a hollow portion. The injection molded article is characterized by:
［作用］
射出成形体の装飾用凸部構造部に中空部を設けることで
、成形体全体の樹脂厚を均一にし、射出された溶融樹脂
の冷却による収縮を均一にすることにより、装飾用凸部
及び成形体基盤下面のヒケの発生を防止する。[Function] By providing a hollow part in the decorative convex structure of the injection molded body, the resin thickness of the entire molded body is made uniform, and the shrinkage of the injected molten resin due to cooling is made uniform, thereby making the decorative convex structure uniform. This prevents the occurrence of sink marks on the lower surface of the base of the molded body.
［実施例］
次に、第１図、第２図を用いて本発明を詳細に説明する
。[Example] Next, the present invention will be explained in detail using FIGS. 1 and 2.
第１図に示すように、本発明の装飾用凸部２を有する射
出成形体１は、成形体基盤３の上面に装飾用凸部２が設
けられており、装飾用凸部構造の内部に中空部４を有す
る構造である。As shown in FIG. 1, the injection molded article 1 having the decorative convex portion 2 of the present invention has the decorative convex portion 2 provided on the upper surface of the molded body base 3, and the inside of the decorative convex structure. It has a structure having a hollow part 4.
当該射出成形体１を他種素材と接着させる場合は、成形
体基盤３の下面に接着剤５と離型紙６を設けることによ
り、接着の際は離型剤を剥して、接着させることができ
る。または、予め接着剤を設けておかなくても、接着す
るときに、接着剤を塗布して接着することもできる。When adhering the injection molded product 1 to another type of material, by providing an adhesive 5 and a release paper 6 on the lower surface of the molded product base 3, the release agent can be peeled off and the material can be adhered. . Alternatively, the adhesive can be applied and bonded at the time of bonding without providing an adhesive in advance.
第２図に、本発明の射出成形体１の一例である自動車の
ネームプレートを示すが、第２図に示されるように、装
飾用凸部２は複数であっても良い。また、接着剤５とし
ては、両面テープ等があげられる。FIG. 2 shows an automobile name plate which is an example of the injection molded article 1 of the present invention, but as shown in FIG. 2, a plurality of decorative convex portions 2 may be provided. Furthermore, examples of the adhesive 5 include double-sided tape and the like.
射出成形体１は熱可塑性樹脂、熱可塑性工・ラストマー
、これらと従来公知の添加剤やフィラーとの配合物等の
溶融樹脂で成形される。The injection molded article 1 is molded from a molten resin such as a thermoplastic resin, a thermoplastic lastomer, or a mixture of these and conventionally known additives and fillers.
成形方法は、成形体凸部に対応した凹部を有するキャビ
ティ内へ溶融樹脂注入位置から溶融樹脂を注入する。In the molding method, molten resin is injected from a molten resin injection position into a cavity having a recess corresponding to a convex portion of the molded body.
キャビティ内への溶融樹脂の注入時もしくは注入後に、
キャビティ凹部の所定の位置に中空部形成流体を圧入し
、溶融樹脂をキャビティ内壁に圧着させ、強制的に中空
部４を或形する。During or after injection of molten resin into the cavity,
A hollow part forming fluid is press-fitted into a predetermined position of the cavity recess, and the molten resin is pressed against the inner wall of the cavity, thereby forcibly forming the hollow part 4 into a certain shape.
中空部形成流体としては、例えば窒素、炭酸ガス、空気
等のように、無害で成形温度及び射出圧力下で液化しな
いガスが一般的であるが、溶融合成樹脂と相溶性のない
液体やオリゴマーを用いることも出来る。The cavity-forming fluid is generally a gas such as nitrogen, carbon dioxide, air, etc., which is harmless and does not liquefy under the molding temperature and injection pressure. It can also be used.
上記のようにして中空部４を成形した後は、中空部形成
流体の圧力を維持したままキャビティ内の溶融樹脂を冷
却固化させ、その後中空部４内の中空部成形流体を排出
してから型を開いて成形体を取り出す。After molding the hollow part 4 as described above, the molten resin in the cavity is cooled and solidified while maintaining the pressure of the hollow part forming fluid, and then the hollow part molding fluid in the hollow part 4 is discharged, and then the mold is removed. Open it and take out the molded body.
［発明の効果］
射出成形体の装飾用凸部構造部に中空部を設けることで
、ヒケがなく、平滑性のある成形体表面が得られる。[Effects of the Invention] By providing a hollow portion in the decorative convex structure of the injection molded product, a smooth surface of the molded product without sink marks can be obtained.
また、成形体基盤下面にヒケによる空間がないので、大
きな接着面が得られると共に、他種素材と接着するとき
の押圧力が接着面全体にむらなくかかるので、強い接着
力が得られ、剥離し難くなる。In addition, since there is no space due to sink marks on the bottom surface of the molded body base, a large adhesive surface is obtained, and the pressing force when adhering to other materials is evenly applied to the entire adhesive surface, resulting in strong adhesive force and peeling. It becomes difficult to do.
第１図は、内部が中空構造である装飾用凸部を有する射
出成形体の断面図、第２図は、射出成形体の一例、第３
図は、内部が中実の装飾用凸部を有する射出成形体、第
４図は、内部に空間部を有する装飾用凸部を有する射出
成形体である。
１−一一射出成形体 ２−一一装飾用凸部３−−一成
形体基盤 ４−一一中空部５−一一接着剤 ６
−一一離型紙７一一一空間部FIG. 1 is a cross-sectional view of an injection molded product having a decorative convex portion with a hollow structure inside, FIG. 2 is an example of an injection molded product, and FIG.
The figure shows an injection molded body having a decorative convex portion with a solid interior, and FIG. 4 shows an injection molded body having a decorative convex portion having a space inside. 1-11 Injection molded product 2-11 Decorative convex portion 3--1 Molded product base 4-11 Hollow portion 5-11 Adhesive 6
-11 release paper 711 space section
Claims (1)
内が中空部となっていることを特徴とする射出成形体。An injection molded article having a decorative convex portion on the upper surface of the molded article base, and a hollow portion inside the decorative convex portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP153190A JP2872319B2 (en) | 1990-01-10 | 1990-01-10 | Injection molding for decoration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP153190A JP2872319B2 (en) | 1990-01-10 | 1990-01-10 | Injection molding for decoration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03207620A true JPH03207620A (en) | 1991-09-10 |
| JP2872319B2 JP2872319B2 (en) | 1999-03-17 |
Family
ID=11504106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP153190A Expired - Lifetime JP2872319B2 (en) | 1990-01-10 | 1990-01-10 | Injection molding for decoration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2872319B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5478627A (en) * | 1992-08-27 | 1995-12-26 | Sumitomo Chemical Company, Limited | Laminate |
| US5736080A (en) * | 1995-05-26 | 1998-04-07 | Nissei Plastic Industrial Co., Ltd. | Program setting method for injection molding machine control device |
| JP2009031284A (en) * | 2008-07-22 | 2009-02-12 | Toyota Motor Corp | Cover for radar apparatus of vehicle |
-
1990
- 1990-01-10 JP JP153190A patent/JP2872319B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5478627A (en) * | 1992-08-27 | 1995-12-26 | Sumitomo Chemical Company, Limited | Laminate |
| US5736080A (en) * | 1995-05-26 | 1998-04-07 | Nissei Plastic Industrial Co., Ltd. | Program setting method for injection molding machine control device |
| JP2009031284A (en) * | 2008-07-22 | 2009-02-12 | Toyota Motor Corp | Cover for radar apparatus of vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2872319B2 (en) | 1999-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5604006A (en) | Label inmolding process and article of manufacture produced therefrom | |
| AU2001277991B2 (en) | Co-molded flock transfer and method | |
| CA2154435A1 (en) | Method for producing thermoplastic resin molded article and mold assembly therefor | |
| EP1302300A4 (en) | Label for in-mold decorating and resin moldings with said label | |
| JPH03207620A (en) | Decorative injection molded body | |
| KR940009007B1 (en) | Coated synthetic articles and method of making the same | |
| CA2006677A1 (en) | Process and mold for producing a multilayer molded article | |
| JPS63159031A (en) | Manufacture of internal trim parts | |
| EP0608438A4 (en) | Instrument panel for automobile. | |
| JPS6395913A (en) | Manufacture of display and decorative member for automobile | |
| MY120846A (en) | Methods for producing multilayer molded articles | |
| JP3351274B2 (en) | Method and apparatus for producing a transfer molded article | |
| JP4374937B2 (en) | Molded body with foamed in-mold label that forms uneven patterns | |
| JPS63224918A (en) | Manufacture of molded product with pattern | |
| JP3626299B2 (en) | Injection mold and overlay molding method using the same | |
| JPH09323326A (en) | Die and method for manufacturing insert in-mold decorated item | |
| JPH0245579B2 (en) | ||
| JPH0225312A (en) | Manufacture of paper-like decorating synthetic resin injection-molded item | |
| JP2779347B2 (en) | Injection molding method of molded article having concave part and pictured film on the surface | |
| FR2728194A1 (en) | Prodn. of moulded plastic parts decorated in three dimensions | |
| JP2017213747A (en) | Decorative synthetic resin molded article and manufacturing method therefor | |
| JPS61172714A (en) | Decorative molding and manufacture thereof | |
| JP2680381B2 (en) | Manufacturing method of decorative molded products | |
| JPH02261612A (en) | Both-face insert molding method | |
| JPH043772Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080108 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090108 Year of fee payment: 10 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090108 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100108 Year of fee payment: 11 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110108 Year of fee payment: 12 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110108 Year of fee payment: 12 |