JPH0613182B2 - Manufacturing method of laminated molded product - Google Patents
Manufacturing method of laminated molded productInfo
- Publication number
- JPH0613182B2 JPH0613182B2 JP5810289A JP5810289A JPH0613182B2 JP H0613182 B2 JPH0613182 B2 JP H0613182B2 JP 5810289 A JP5810289 A JP 5810289A JP 5810289 A JP5810289 A JP 5810289A JP H0613182 B2 JPH0613182 B2 JP H0613182B2
- Authority
- JP
- Japan
- Prior art keywords
- felt
- mold
- density layer
- resin
- molten 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
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 229920005989 resin Polymers 0.000 claims description 53
- 239000011347 resin Substances 0.000 claims description 53
- 238000000034 method Methods 0.000 claims description 23
- 238000000465 moulding Methods 0.000 claims description 15
- 238000001746 injection moulding Methods 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 239000004831 Hot glue Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B29C45/14811—Multilayered articles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 《産業上の利用分野》 この発明は、自動車内装部品に好適な積層成形品に関す
るもので、特に、内装部品の裏面側に、緩衝，防音機能
を備えたフェルトを一体貼着した積層成形品の製造方法
に関する。TECHNICAL FIELD The present invention relates to a laminated molded article suitable for automobile interior parts, and in particular, a felt having a cushioning and soundproofing function is integrally formed on the back side of the interior parts. The present invention relates to a method for manufacturing a laminated molded article that has been stuck.
《従来の技術》 周知のように、自動車の車体パネルの内面側には自動車
用ドアトリム等の各種内装部品が装着されている。<< Prior Art >> As is well known, various interior parts such as an automobile door trim are mounted on the inner surface side of an automobile body panel.
この種内装部品の構成としては、ボード芯材にウレタン
フォーム等のパット材を介して、塩ビレザー等の表皮材
を外表面に被覆した積層構造のものや、射出成形により
合成樹脂を所要形状に成形した単体パネル構造のものが
知られている。この射出成形体からなる内装部品は、軽
量化ならびに成形性に優れているが、その反面、硬質
で、かつ樹脂の弾性により撓みやすいため、車体パネル
との間でビビリ音，ガタツキ音等の低級音を発生しやす
く、また、外力を加えた場合、ベコツキ感が生じるとい
う不具合が指摘されている。This kind of interior parts has a laminated structure in which the outer surface is covered with a skin material such as vinyl chloride leather through a pad material such as urethane foam on the board core material, or a synthetic resin is formed into a required shape by injection molding. A molded single panel structure is known. The interior parts made of this injection-molded product are lightweight and excellent in moldability, but on the other hand, they are hard and easily bent due to the elasticity of the resin, so that they do not cause chattering or rattling noise with the body panel. It has been pointed out that there is a problem that sound is easily generated and that a sticky feeling occurs when an external force is applied.
この対策として、通常、樹脂成形体の裏面側に防音機能
ならびに緩衝機能を備えたフェルトが貼着されている。As a countermeasure against this, a felt having a soundproof function and a cushioning function is usually attached to the back surface side of the resin molded body.
そして、この工程を第７図を基に説明すると、まず、樹
脂成形体を射出成形した後、接着剤を塗布し、さらに乾
燥工程を経て、次の圧着工程でフェルトを樹脂成形体に
一体化した後、接着強度を得るために、養生工程を必要
とする。This process will be described with reference to FIG. 7. First, a resin molded body is injection-molded, an adhesive is applied, and a drying process is performed, and then the felt is integrated with the resin molded body in the next pressure bonding process. After that, a curing process is required to obtain the adhesive strength.
なお、上記接着剤は有機溶媒や水を溶媒として使用する
タイプのものであるが、ホットメルト系接着剤を使用す
ることも提案されている。Although the above-mentioned adhesive is of a type that uses an organic solvent or water as a solvent, it has been proposed to use a hot-melt adhesive.
《発明が解決しようとする課題》 しかしながら、このように従来工法においては、第７図
に示すように、工数が大であり、さらに、圧着工程後、
フェルトの接着強度を確保するために養生時間が長くか
かり、作業工数ならびに作業時間のいずれも多くかか
り、コストアップを招来する大きな要因となっている。<< Problems to be Solved by the Invention >> However, in the conventional method as described above, as shown in FIG. 7, the number of steps is large, and further, after the crimping step,
It takes a long curing time to secure the adhesive strength of the felt, and it requires a lot of man-hours and working time, which is a major factor in increasing the cost.
さらに、接着剤を塗布した後、射出成形品を乾燥炉に入
れて、高温で乾燥させるため、射出成形品が変形する不
具合も指摘されている。Further, it has been pointed out that the injection molded product is placed in a drying furnace and dried at a high temperature after the adhesive is applied, so that the injection molded product is deformed.
また、ホットメルト系接着剤を使用した場合において
も、やはりホットメルト系接着剤の溶融温度まで加熱が
必要なため、やはり射出成形品が変形する不具合があ
り、また、ホットメルト系接着剤は耐熱強度が弱く、環
境温度の変化により、十分な接着強度が保証できないと
いう欠点があった。Even when a hot-melt adhesive is used, it still needs to be heated to the melting temperature of the hot-melt adhesive, so that the injection-molded product is still deformed. The strength is weak, and there is a drawback that sufficient adhesive strength cannot be guaranteed due to changes in environmental temperature.
本発明はこのような事情に鑑みてなされたもので、本発
明の目的は、樹脂成形体の裏面にフェルトを貼着した積
層成形品の製造方法において、製造工数が著しく短縮化
でき、かつ製作に費やす時間も節約でき、しかも変形を
有効に防止できる積層成形品の製造方法を提供すること
にある。The present invention has been made in view of such circumstances, and an object of the present invention is to significantly reduce the number of manufacturing steps in a method for manufacturing a laminated molded article in which felt is attached to the back surface of a resin molded article, and It is an object of the present invention to provide a method for manufacturing a laminated molded product, which can save time spent on the process and can effectively prevent deformation.
《課題を解決するための手段》 上記目的を達成するために、本発明は、金型内に、防
音，緩衝機能を備えたフェルトをセットするとともに、
上記金型のキャビティ内に、溶融樹脂を射出，あるいは
注入充填し、金型内で、樹脂成形体とフェルトとを一体
成形してなる積層成形品の製造方法において、 前記フェルトは高密度層と低密度層との二層に設定する
とともに、金型に当接する側にフェルトの低密度層を配
し、溶融樹脂と対面する側には高密度層を配することに
より、フェルト内に溶融樹脂が侵入するのを規制したこ
とを特徴とする。<< Means for Solving the Problems >> In order to achieve the above object, the present invention sets a felt having a soundproof and cushioning function in a mold, and
In a method for producing a laminated molded product, which comprises injecting or injecting and filling a molten resin into a cavity of the mold, and integrally molding a resin molded body and felt in the mold, wherein the felt is a high-density layer. In addition to setting the low density layer and the low density layer, the low density layer of felt is placed on the side that contacts the mold, and the high density layer is placed on the side that faces the molten resin. It is characterized that it regulated the invasion of.
《作用》 以上の構成から明らかなように、フェルトは、高密度層
と低密度層の二層に設定されており、金型のキャビティ
側には高密度層を、金型の当接する側には低密度層を配
するというものであるから、溶融樹脂がフェルトの高密
度層に当接するため、溶融樹脂がフェルト内に侵入する
のを可及的に防止できる。<Operation> As is clear from the above configuration, the felt is set in two layers, a high-density layer and a low-density layer, and a high-density layer is provided on the cavity side of the mold and a high-density layer is provided on the mold contacting side. Since the low-density layer is provided, the molten resin contacts the high-density layer of the felt, so that the molten resin can be prevented from entering the felt as much as possible.
《実施例》 以下、本発明に係る積層成形品の製造方法の実施例につ
いて添付図面を参照しながら詳細に説明する。<Example> Hereinafter, an example of a method for manufacturing a laminated molded article according to the present invention will be described in detail with reference to the accompanying drawings.
第１図ないし第３図は本発明の第１実施例を示すもの
で、樹脂成形体の成形方法として射出成形が使用されて
いる。また、第４図ないし第６図は本発明方法の第２実
施例を示すもので、樹脂成形体の成形方法としてモール
ドプレス成形が使用されている。1 to 3 show a first embodiment of the present invention, in which injection molding is used as a method for molding a resin molding. FIGS. 4 to 6 show a second embodiment of the method of the present invention, in which mold press molding is used as a method for molding a resin molding.
まず、本発明方法に係る第１実施例について第１図ない
し第３図を基に説明する。First, a first embodiment according to the method of the present invention will be described with reference to FIGS.
第１図において、本発明方法に係る積層成形品１０は、
樹脂成形体１１とその裏面側に一体貼着されているフェ
ルト１２とから大略構成される。さらに、このフェルト
１２は、高密度層１２ａと低密度層１２ｂに、その密度
が調整されている。In FIG. 1, the laminated molded article 10 according to the method of the present invention is
The resin molded body 11 and the felt 12 integrally attached to the back surface of the resin molded body 11 are generally configured. Further, the density of the felt 12 is adjusted to the high density layer 12a and the low density layer 12b.
このことは、樹脂成形体１１の射出成形時、溶融樹脂が
フェルト１２内部に侵入するのを有効に防止するためで
ある。This is to effectively prevent the molten resin from entering the inside of the felt 12 during the injection molding of the resin molded body 11.
さらに、上記フェルト１２は、綿糸２０〜６０重量部、
合成繊維２０〜６０重量部、フェノール樹脂５〜３０重
量部から構成され、密度０．０２〜０．２g/cm2、通気
度５〜１５０cc／cm2・sec であり、上述したフェルト
１２の密度調整は、綿糸を多くする方が、高密度になる
ため、フェルト１２の高密度層１２ａに綿糸を多く配分
し、逆に、低密度層１２ｂに合成繊維を多く配分するよ
うにすれば良い。そして、本実施例では、フェルト１２
の高密度層１２ａの密度を０．１〜０．２g/cm2、低密
度層１２ｂの密度を０．０２〜０．１g/cm2にそれぞれ
設定されている。Further, the felt 12 has 20 to 60 parts by weight of cotton yarn,
It is composed of 20 to 60 parts by weight of synthetic fiber and 5 to 30 parts by weight of phenolic resin, and has a density of 0.02 to 0.2 g / cm 2 and an air permeability of 5 to 150 cc / cm 2 · sec. Since the higher the cotton yarn, the higher the density, the more the cotton yarn is distributed in the high-density layer 12a of the felt 12, and the more the synthetic fiber is distributed in the low-density layer 12b. And in this embodiment, the felt 12
The density of the high density layer 12a is set to 0.1 to 0.2 g / cm 2 , and the density of the low density layer 12b is set to 0.02 to 0.1 g / cm 2 .
次に、上記積層成形品１０の成形工程について説明す
る。Next, a molding process of the laminated molded product 10 will be described.
まず、第２図に示すように、この射出成形に使用される
射出成形用金型２０は、固定側型板２１と可動側型板２
２とから構成され、固定側型板２１内には溶融樹脂を供
給するスプルー２３が形成されており、可動側型板２２
には、この型板２２を固定側型板２１に対して接離可能
に可動させるため駆動ラム２４が備わっている。First, as shown in FIG. 2, the injection-molding die 20 used for this injection molding includes a fixed-side mold plate 21 and a movable-side mold plate 2.
2 and a sprue 23 for supplying a molten resin is formed in the stationary mold plate 21.
Is provided with a drive ram 24 for moving the template 22 so that it can be brought into contact with and separated from the fixed-side template 21.
そして、射出成形用金型２０の固定側型板２１の型面に
フェルト１２をセットするが、固定側型板２１にセット
ピン（図示せず）が配置されている。なお、溶融樹脂の
経路となる部分に対応するフェルト１２には貫通孔２５
が形成されている。このとき、フェルト１２は、その低
密度層１２ｂが固定側型板２１と当接するようにセット
する。Then, the felt 12 is set on the mold surface of the fixed-side mold plate 21 of the injection molding die 20, and a set pin (not shown) is arranged on the fixed-side mold plate 21. A through hole 25 is formed in the felt 12 corresponding to a portion that serves as a path for the molten resin.
Are formed. At this time, the felt 12 is set so that the low-density layer 12b thereof contacts the fixed-side template 21.
次いで、第３図に示すように、可動側型板２２が駆動ラ
ム２４の動作により可動して、両型板２１，２２が型締
めされ、両側板２１，２２間に形成されるキャビティ内
にスプルー２３を通じて溶融樹脂２６が型内に射出充填
される。そして、溶融樹脂２６は、型板２１，２２によ
り冷却固化され、所要形状の樹脂成形体１１が射出成形
されると同時に、この樹脂成形体１１とフェルト１２と
が強固に一体化される。このとき、溶融樹脂２６に射出
圧が印加されるが、フェルト１２の溶融樹脂２６と対面
する側は高密度層１２ａが配置されるため、溶融樹脂２
６がフェルト１２内に侵入するのを可及的に防止でき
る。Next, as shown in FIG. 3, the movable side mold plate 22 is moved by the operation of the drive ram 24, the mold plates 21 and 22 are clamped, and the mold is placed in the cavity formed between the side plates 21 and 22. The molten resin 26 is injected and filled into the mold through the sprue 23. The molten resin 26 is cooled and solidified by the mold plates 21 and 22, and the resin molded body 11 having a required shape is injection molded, and at the same time, the resin molded body 11 and the felt 12 are firmly integrated. At this time, injection pressure is applied to the molten resin 26, but since the high-density layer 12a is arranged on the side of the felt 12 facing the molten resin 26, the molten resin 2
It is possible to prevent 6 from entering the felt 12 as much as possible.
従って、フェルト１２の弾性が損なわれず、良好な防音
機能ならびに緩衝機能が保証される。Therefore, the elasticity of the felt 12 is not impaired, and a good soundproofing function and cushioning function are guaranteed.
また、樹脂成形体１１とフェルト１２とがアンカー効果
により、一層強固に接合されるため、フェルト１２が樹
脂成形体１１から剥離するような不具合はない。Further, since the resin molded body 11 and the felt 12 are more firmly joined by the anchor effect, there is no problem that the felt 12 is separated from the resin molded body 11.
このように射出成形を利用して、樹脂成形体１１の裏面
に貼着されるフェルト１２を、予め射出成形用金型２０
内にインサートしておき、後は射出成形を行なうだけ
で、簡単かつ短時間に積層成形品１０を製作することが
可能となり、また接着剤を使用しないため、高温の乾燥
工程が省けるため、樹脂成形体１１の変形も未然に防止
できる。In this way, by using injection molding, the felt 12 attached to the back surface of the resin molded body 11 is preliminarily subjected to the injection molding die 20.
It is possible to manufacture the laminated molded product 10 simply and in a short time simply by inserting it inside and then performing injection molding. Also, since no adhesive is used, the high temperature drying step can be omitted, so that the resin The deformation of the molded body 11 can be prevented in advance.
次に、第４図ないし第６図は本発明による積層成形品１
０の成形工法として、モールドプレス成形を使用した実
施例であり、本例によるモールドプレス用金型３０は、
所要の型面を備えたモールドプレス用下型３１と、この
モールドプレス用下型３１の型面と対をなす型面を備
え、上下動可能に構成されるモールドプレス用上型３２
とから構成される。Next, FIGS. 4 to 6 show a laminated molded article 1 according to the present invention.
This is an example in which mold press molding is used as the molding method of No. 0, and the mold pressing die 30 according to this example is
A mold press lower die 31 having a required mold surface, and a mold press upper die 32 configured to be movable up and down, including a mold surface that makes a pair with the mold surface of the mold press lower die 31.
Composed of and.
まず、第４図に示すように、モールドプレス用下型３１
の型面上にフェルト１２を載置するが、このときもフェ
ルト１２の低密度層１２ｂが下型３１と当接するよう
に、高密度層１２ａを上側に向けてセットする。First, as shown in FIG. 4, a lower die 31 for mold press is used.
The felt 12 is placed on the mold surface of 1., and the high-density layer 12a is set upward so that the low-density layer 12b of the felt 12 also contacts the lower mold 31 at this time.
次いで、第５図に示すように押出成形機３３のノズル３
４から溶融樹脂３５が型内に供給される。Next, as shown in FIG. 5, the nozzle 3 of the extruder 33 is
The molten resin 35 is supplied from 4 to the mold.
その後、モールドプレス用上型３２が下降して、第６図
に示すようにモールドプレス用上下型３１，３２により
溶融樹脂３５が所要形状にコールドプレス成形されると
ともに、樹脂成形体１１とフェルト１２との一体化が行
われる。Thereafter, the upper die 32 for mold press descends, and as shown in FIG. 6, the molten resin 35 is cold press-molded into a required shape by the upper and lower molds 31, 32 for mold press, and at the same time, the resin molded body 11 and the felt 12 are formed. Is integrated with.
本例においても前述実施例同様、この積層成形品１０の
製作に費やす時間が短時間で済み、かつ工程も１工程で
あり、成形工程ならびに成形時間において有利であると
ともに、接着剤を使用しないため、高温で乾燥させる必
要はなく、樹脂成形体１１に変形が生じるおそれがな
い。しかも、溶融樹脂３５がフェルト１２の凹凸面に入
り込むいわゆるアンカー効果が期待できるため、フェル
ト１２は樹脂成形体１１に対して強固な接合状態を得る
ことができる。また、フェルト１２の高密度層１２ａが
溶融樹脂３５と対面するため、フェルト１２内に溶融樹
脂３５が染み込むことが可及的に防止でき、フェルト１
２はその空隙に樹脂が入り込むことがないため、有効な
緩衝機能ならびに防音機能が確保される。Also in this example, as in the above-described example, the time required for manufacturing the laminated molded product 10 is short, and the number of steps is one, which is advantageous in the molding step and molding time, and does not use an adhesive. It is not necessary to dry at high temperature, and there is no risk of deformation of the resin molded body 11. Moreover, since the so-called anchor effect in which the molten resin 35 enters the uneven surface of the felt 12 can be expected, the felt 12 can be firmly bonded to the resin molded body 11. Further, since the high-density layer 12a of the felt 12 faces the molten resin 35, it is possible to prevent the molten resin 35 from soaking into the felt 12 as much as possible.
No. 2 does not allow resin to enter the voids, so an effective cushioning function and soundproofing function are secured.
《効果》 以上の記載から明らかなように、本発明方法によれば、
射出成形あるいはモールドプレス成形される樹脂成形体
の裏面側に緩衝，防音機能を持つフェルトを一体貼着し
た積層成形品において、フェルトの溶融樹脂と対面する
側の密度を高密度に設定することにより、溶融樹脂がフ
ェルト内部に侵入するのを防止するというものであるか
ら、フェルトの持つ防音機能ならびに緩衝機能を何等損
なうことなく、積層成形品の製造工程を大幅に短縮化で
きるとともに、成形時間を著しく節約できるため大幅な
コストダウンを招来する効果がある。<< Effect >> As is apparent from the above description, according to the method of the present invention,
By setting the density of the side of the felt facing the molten resin to a high density in a laminated molded product in which a felt having a buffering and soundproofing function is integrally attached to the back side of a resin molded body that is injection molded or mold pressed. Since the molten resin is prevented from entering the inside of the felt, the manufacturing process of the laminated molded product can be significantly shortened and the molding time can be shortened without damaging the soundproofing function and the cushioning function of the felt. Since it is possible to save significantly, it has an effect of leading to a significant cost reduction.
また、従来のように接着剤によりフェルトを貼着するの
ではなく、射出成形用金型あるいはモールドプレス成形
用金型内で樹脂成形体とフェルトとを一体化するため、
高温状態の乾燥工程が省けるため、樹脂成形体が変形す
るおそれがないとともに、溶融樹脂とフェルトとのアン
カー効果が期待でき、樹脂成形体とフェルトとは強固に
接合し、長期の使用によってもフェルトが樹脂成形体裏
面から剥離するおそれがなく、良好な品質を長期に亘り
保証できる効果がある。Further, instead of pasting the felt with an adhesive as in the past, in order to integrate the resin molded body and the felt in the injection molding die or the mold press molding die,
Since the drying step at high temperature can be omitted, there is no risk of deformation of the resin molded body, and the anchor effect between the molten resin and the felt can be expected, the resin molded body and the felt are firmly joined, and the felt can be used even for a long time. There is no possibility of peeling from the back surface of the resin molded body, and there is an effect that good quality can be guaranteed for a long time.
第１図は本発明方法の第１実施例により成形された積層
成形品の構成を示す部分側面図、第２図ないし第３図は
本発明方法の第１実施例の各工程を示す各断面図、第４
図ないし第６図は本発明方法の第２実施例を示すもの
で、モールドプレス成形工法の各工程を示す各断面図、
第７図は従来の積層成形品の工程を示す工程流れ図であ
る。 １０……積層成形品 １１……樹脂成形体 １２……フェルト １２ａ……高密度層 １２ｂ……低密度層 ２０……射出成形用金型 ２１……固定側型板 ２２……可動側型板 ２６……溶融樹脂 ３０……モールドプレス用金型 ３１……モールドプレス用下型 ３２……モールトプレス用上型 ３５……溶融樹脂 ４０……フェルト ４１……不織布FIG. 1 is a partial side view showing the structure of a laminated molded article molded by the first embodiment of the method of the present invention, and FIGS. 2 to 3 are cross-sectional views showing the steps of the first embodiment of the method of the present invention. Figure, 4th
FIG. 6 to FIG. 6 show a second embodiment of the method of the present invention and are sectional views showing respective steps of the mold press molding method,
FIG. 7 is a process flow chart showing a process of a conventional laminated molded product. 10 ... Laminated product 11 ... Resin molded product 12 ... Felt 12a ... High density layer 12b ... Low density layer 20 ... Injection molding mold 21 ... Fixed side template 22 ... Movable side template 26 ... Molten resin 30 ... Mold press mold 31 ... Mold press lower mold 32 ... Mold press upper mold 35 ... Molten resin 40 ... Felt 41 ... Nonwoven fabric
Claims (1)
を備えたフェルト（１２）をセットするとともに、上記
金型（２０，３０）のキャビティ内に、溶融樹脂（２
６，３５）を射出，あるいは注入充填し、金型（２０，
３０）内で、樹脂成形体（１１）とフェルト（１２）と
を一体成形してなる積層成形品の製造方法において、 前記フェルト（１２）は高密度層（１２ａ）と低密度層
（１２ｂ）との二層に設定するとともに、金型（２０，
３０）に当接する側にフェルト（１２）の低密度層（１
２ｂ）を配し、溶融樹脂（２６，３５）と対面する側に
は高密度層（１２ａ）を配することにより、フェルト
（１２）内に溶融樹脂（２６，３５）が侵入するのを規
制したことを特徴とする積層成形品の製造方法。1. A felt (12) having a soundproofing and cushioning function is set in a die (20, 30), and a molten resin (2) is placed in a cavity of the die (20, 30).
6,35) is injected or injected to fill the mold (20,
30), a method for producing a laminated molded product, comprising integrally molding a resin molded body (11) and a felt (12), wherein the felt (12) is a high density layer (12a) and a low density layer (12b). And the mold (20,
30) on the side abutting the low density layer (1) of felt (12)
2b) and the high-density layer (12a) on the side facing the molten resin (26, 35) to prevent the molten resin (26, 35) from entering the felt (12). A method for manufacturing a laminated molded article, which is characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5810289A JPH0613182B2 (en) | 1989-03-10 | 1989-03-10 | Manufacturing method of laminated molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5810289A JPH0613182B2 (en) | 1989-03-10 | 1989-03-10 | Manufacturing method of laminated molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02235711A JPH02235711A (en) | 1990-09-18 |
| JPH0613182B2 true JPH0613182B2 (en) | 1994-02-23 |
Family
ID=13074597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5810289A Expired - Lifetime JPH0613182B2 (en) | 1989-03-10 | 1989-03-10 | Manufacturing method of laminated molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0613182B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4255856B2 (en) * | 2004-02-09 | 2009-04-15 | 三乗工業株式会社 | Sound absorbing material and manufacturing method thereof |
-
1989
- 1989-03-10 JP JP5810289A patent/JPH0613182B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02235711A (en) | 1990-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2537668B2 (en) | Method for manufacturing resin molded products | |
| JP2003516258A (en) | Vehicle interior components and the process of manufacturing vehicle interior components | |
| JPH0613182B2 (en) | Manufacturing method of laminated molded product | |
| JPH07195430A (en) | Method and apparatus for integrally molding composite skin material | |
| JPH0516163A (en) | Door trim manufacturing method | |
| JPH07324B2 (en) | Method for producing synthetic resin product having skin | |
| JP3318460B2 (en) | Manufacturing method of laminated molded products | |
| JPH0911344A (en) | Partial skin molding product manufacturing method | |
| JP2935447B2 (en) | Manufacturing method for automotive interior parts | |
| JP2907413B2 (en) | Molding equipment for laminated moldings | |
| JP3529484B2 (en) | Vehicle interior part with sound absorbing material and method of manufacturing the same | |
| JP3637615B2 (en) | Surface material provided with speaker grill and manufacturing apparatus thereof | |
| JP4017146B2 (en) | Method for molding laminated molded body and molding die | |
| JPS5922569A (en) | Production of wood club head for golf | |
| JPH0628876B2 (en) | Interior parts for automobile and manufacturing method thereof | |
| JP2531218B2 (en) | Vehicle window manufacturing method | |
| JPH0565329B2 (en) | ||
| JPH06218747A (en) | Production of skin integrated resin molded product | |
| JPH0618727B2 (en) | Manufacturing method of resin molded product with skin | |
| JP3329087B2 (en) | Laminated body and method for producing the same | |
| JP3107895B2 (en) | Partial decoration method in stamping molding | |
| KR100217564B1 (en) | How to attach center trim of car door trim | |
| JP3134252B2 (en) | Mold structure used for manufacturing multilayer molded products | |
| JPH0618720B2 (en) | Manufacturing method of automobile interior materials | |
| JP3430550B2 (en) | Side impact door trim and method of making it |