JPH01306210A - Production of resin molded item - Google Patents
Production of resin molded itemInfo
- Publication number
- JPH01306210A JPH01306210A JP63137365A JP13736588A JPH01306210A JP H01306210 A JPH01306210 A JP H01306210A JP 63137365 A JP63137365 A JP 63137365A JP 13736588 A JP13736588 A JP 13736588A JP H01306210 A JPH01306210 A JP H01306210A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- lower mold
- heating
- resin piece
- mold
- 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
- 229920005989 resin Polymers 0.000 title claims abstract description 49
- 239000011347 resin Substances 0.000 title claims abstract description 49
- 238000000465 moulding Methods 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 abstract description 7
- 230000006866 deterioration Effects 0.000 abstract description 4
- 208000019901 Anxiety disease Diseases 0.000 abstract 1
- 230000036506 anxiety Effects 0.000 abstract 1
- 239000003365 glass fiber Substances 0.000 description 7
- 239000012778 molding material Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000004040 coloring Methods 0.000 description 2
- 239000000805 composite resin Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000017284 Pometia pinnata Nutrition 0.000 description 1
- 240000007653 Pometia tomentosa Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
- Vehicle Step Arrangements And Article Storage (AREA)
- Casting Or Compression 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）
この発明は、樹脂成形品の成形方法に関し、特に該成形
品の所定部位にボス部などの凸部を突出形成する方法に
関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for molding a resin molded product, and more particularly to a method for forming a protrusion such as a boss at a predetermined portion of the molded product.
（従来の技術）
乗用車などに用いられるリアパーセル等のボード部品は
、通常樹脂成形品からなるものであって、一般にはＰＰ
等の熱可塑性樹脂にレインフォースとして中空鋼材など
を一体にインサートまたは後付けしたものである。(Prior art) Board parts such as rear parcels used in passenger cars are usually made of resin molded products, and are generally made of PP.
This is a thermoplastic resin in which a hollow steel material or the like is integrally inserted or retrofitted as reinforcement.
しかしながら、このような部材構成ではボード部品を開
けて裏面を覗いた状態でこれらレインフォースが見えて
しまい、見栄えが悪いとともに、レインフォースの突出
分だけラゲージスペースが縮小するため、最近ではさら
に強度剛性の高い素材として繊維強化熱可塑性樹脂を成
形素材として採用し、単一部品構成でも十分な強度をも
ったボード部品を得られるようにしている。However, with this kind of component configuration, these reinforcements are visible when the board component is opened and the back side is looked at, which makes it look bad, and the luggage space is reduced by the protrusion of the reinforcements. By using fiber-reinforced thermoplastic resin as the molding material, it is possible to obtain a board component with sufficient strength even with a single component configuration.
この樹脂を用いた成形方法は、一般のスタンピング加工
と同様に、ガラス繊維強化熱可塑性樹脂からなるシート
状ブランクを加熱し、膨潤させた状態で、該加熱ブラン
クをコールドプレス成形用の下型−ヒに設置し、次いで
上型を下型に係合することで、型面形状に沿った曲面の
成形品を成形する。The molding method using this resin is similar to general stamping processing, in which a sheet-like blank made of glass fiber reinforced thermoplastic resin is heated and swollen, and then the heated blank is inserted into a lower mold for cold press molding. Then, by engaging the upper mold with the lower mold, a molded product with a curved surface that follows the shape of the mold surface is formed.
ところで、リアパーセルの裏面の特定部位に他の部品と
の結合用のボス部やリブ等の凸部を突出形成する必要が
ある。By the way, it is necessary to form protrusions such as bosses and ribs for connection with other parts at specific parts of the back surface of the rear parcel.
この種の凸部を形成する場合、従来では成形型に前記ボ
ス部に対応する四部と、四部周縁にこれに対応した偏肉
部分を予め形成しておき、加圧時における樹脂流動を利
用して溶融樹脂の余肉がこの四部に流れ込むようにする
方法と、加熱ブランクの凸部形成位置下面に同材質の溶
融樹脂ピースをあてがった状態で成形することで、溶融
樹脂が四部の内部に流動するとともに、加熱ブランクと
溶融樹脂ピースを一体的に同化させる方法がある。When forming this type of convex part, conventionally, four parts corresponding to the boss part and a corresponding uneven thickness part are formed in advance on the molding die, and the resin flow during pressurization is used. By using a method in which the excess thickness of the molten resin flows into these four parts, and by applying a molten resin piece of the same material to the bottom surface of the heating blank where the convex part is formed, the molten resin flows into the inside of the four parts. In addition, there is a method of integrally assimilating the heated blank and the molten resin piece.
（発明が解決しようとする課題）
しかしながら以上の凸部形成方法では以下の問題があっ
た。(Problems to be Solved by the Invention) However, the above method for forming a convex portion has the following problems.
前者の方法、すなわち、余肉の選り込みを利用しようと
すると、大きなプレス圧力が必要となる。If you try to use the former method, that is, selecting excess meat, a large pressing pressure is required.
また、この部分は偏肉部だけ強い圧力が生じ、またその
裏面側である製品表面にはカーペットが成形と同時に一
体に貼着されるので、この部位では圧力増加によって毛
倒れや樹脂の滲みだし、或いは色むらなど、表面の風合
いを損ねる原因となついた。In addition, strong pressure is generated in this part only at the uneven thickness part, and since the carpet is attached to the product surface on the back side at the same time as molding, the increased pressure in this part may cause the hair to fall or the resin to ooze out. , or color unevenness, which may cause deterioration of the surface texture.
また、後者の方法、すなわち溶融樹脂ピースをあてがっ
た状態で成形する方法にあっては、樹脂流動が良好で、
相溶性の高い熱可塑性樹脂を採用することが必要であり
、実際にこの種の樹脂ピースを用いて成形された裏面部
分を観察すると、色むらやウェルドラインを生じており
、見栄えが低下するほか、強度的にも不安があった。In addition, in the latter method, that is, molding with a molten resin piece applied, resin flow is good,
It is necessary to use a thermoplastic resin with high compatibility, and when we actually observe the back side molded using this type of resin piece, we find that it has uneven coloring and weld lines, which deteriorates the appearance. , I was also worried about the strength.
特に以上の成形方法を成形素材として繊維強化熱可塑性
樹脂に適用した場合には、複合素材であるガラス繊維の
混入分だけ樹脂流動が乏しくなるので、前述の欠点が顕
著に現れていた。In particular, when the above-described molding method is applied to a fiber-reinforced thermoplastic resin as a molding material, the resin flow becomes poor due to the inclusion of glass fiber, which is a composite material, so the above-mentioned drawbacks become conspicuous.
本発明は以上の問題点に鑑みてなされたもので、この種
の凸部形成部位における表裏の見栄え低下や、強度上の
不安を一掃することの出来る樹脂成形品のプレス成形方
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 an object thereof is to provide a press molding method for a resin molded product that can eliminate the deterioration in appearance of the front and back surfaces and concerns about strength at the site where the convex portions are formed. The purpose is to
（課題を解決するための手段）
前記目的を達成するため、この発明は、熱可塑性樹脂か
らなる複数層のシート状ブランクを加熱した状態で、該
加熱ブランクをコールドプレス成形用の下型上に設置し
、次いで上型を下型に係合することで、型面形状に沿っ
た曲面の成形品を成形するとともに、該成形品の所定部
位に凸部を突出形成するようにした樹脂成形品の成形方
法において：
前記凸部の突出形成部位において、前記下型状に設置さ
れた加熱ブランクの間に溶融した熱可塑性樹脂ピースを
挾み込んだ状態で上型を下型に係合することで、前記樹
脂ピースが前記凸部形成部位の内部に樹脂流動して凸部
の主要部を構成するようにしたものである。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a heating method for heating a plurality of layers of sheet-like blanks made of thermoplastic resin, and placing the heated blanks on a lower mold for cold press molding. A resin molded product is installed, and then an upper mold is engaged with a lower mold to mold a molded product with a curved surface that follows the shape of the mold surface, and at the same time, a convex portion is formed protrudingly at a predetermined portion of the molded product. In the molding method, the upper mold is engaged with the lower mold in a state where a molten thermoplastic resin piece is sandwiched between heating blanks installed in the lower mold shape at the protrusion forming portion of the convex portion. The resin piece flows into the convex portion forming portion to form the main portion of the convex portion.
（作 用）
以上の構成によれば、樹脂ピースの増量分の余肉が樹脂
流動して成形型の凹部に回り込むが、この樹脂ピースは
成形された凸部の表面に現れることがなく、樹脂ピース
の下面側に位置する加熱ブランクが凸部の表面を構成す
る。(Function) According to the above configuration, the extra thickness of the resin piece flows into the resin and wraps around the concave part of the mold, but this resin piece does not appear on the surface of the molded convex part, and the resin A heating blank located on the lower side of the piece constitutes the surface of the convex portion.
（実 施 例）
以下、この発明の実施例を図面を用いて詳細に説明する
。(Example) Hereinafter, an example of the present invention will be described in detail using the drawings.
第１図ないし第５図はこの発明の成形方法を、樹脂素材
としてガラス繊維強化熱可塑性樹脂をもちいてリアパー
セルの成形に適用した場合の第一実施例による成形順序
を示すものである。1 to 5 show the molding sequence according to a first embodiment when the molding method of the present invention is applied to molding a rear parcel using glass fiber reinforced thermoplastic resin as the resin material.
まず前記成形素材は、熱可塑性樹脂としてＰＰ。First, the molding material is PP as a thermoplastic resin.
ＰＥが用いられ、ガラスファイバーとの重量比が樹脂５
０〜８０−ガラス５０〜２０程度の複合樹脂が用いられ
る。PE is used, and the weight ratio of resin to glass fiber is 5.
A composite resin of about 0 to 80-glass and 50 to 20 is used.
この複合樹脂はシート状の形態で提供され、所定寸法に
ブランクカットした後、このブランク１を第１図に示す
ようにヒータ２を内蔵したオーブン内部で前記ＰＰ、Ｐ
Ｅの融点以上である１８０〜２３０℃の温度範囲にプレ
ヒートすることによって、樹脂成分が溶融し、内部に複
合されているガラス繊維の弾性復元により１．５〜３．
５倍程度の厚みに膨潤する。This composite resin is provided in the form of a sheet, and after cutting a blank into a predetermined size, the blank 1 is placed inside an oven equipped with a heater 2 as shown in FIG.
By preheating to a temperature range of 180 to 230°C, which is higher than the melting point of E, the resin component melts, and the elastic restoration of the glass fibers composited inside causes the temperature to rise to 1.5 to 3.
It swells to about 5 times the thickness.
そして膨潤した状態ではこの加熱ブランク１はガラスフ
ァイバーの積層形状に沿って層状に引き剥がし可能とな
る。In the swollen state, the heating blank 1 can be peeled off in layers along the laminated shape of the glass fibers.
この状態の加熱ブランク１をオーブンから取り出し、第
２図に示すコールドプレス成形用の下型３上に設置する
。The heated blank 1 in this state is taken out of the oven and placed on a lower die 3 for cold press molding shown in FIG.
この下型３の型面のはじの適宜の部位には後述の製品に
突出形成される後述のボス部に相当する凹部３ａが形成
されている。なお、図において、は一つのみを示してい
るが、実際には複数箇所形成されている。A recess 3a, which corresponds to a boss portion to be described later and is formed protrudingly from a product to be described later, is formed at an appropriate location on the edge of the mold surface of the lower mold 3. In addition, in the figure, only one is shown, but in reality, a plurality of locations are formed.
設置作業完了後、第３図に示すように凸部形成部位にお
ける加熱ブランク１の端部を猟み上げ、層状に剥離させ
た状態で、前記加熱工程で平行して加熱溶融させておい
た熱可塑性樹脂ピース４を剥離した内部に押し込み、端
部を再び閉じる。After the installation work is completed, as shown in Fig. 3, pick up the edge of the heating blank 1 at the protrusion formation site, peel it off in layers, and apply the heat that was heated and melted in parallel in the heating process. The plastic resin piece 4 is pushed into the peeled interior and the ends are closed again.
この溶融熱可塑性樹脂ピースは前記加熱ブランク１の樹
脂成分と相溶性のあるＰＰ、ＰＥなどからなっている。This molten thermoplastic resin piece is made of PP, PE, or the like which is compatible with the resin component of the heating blank 1.
次いで第４図のごとく、加熱ブランク１の表面にカーペ
ット５を設置した後、直ちに上型６を下型３に係合し、
両者間に形成されたキャビティ形状に沿って前記加熱ブ
ランク１をプレス成形する。Next, as shown in FIG. 4, after placing the carpet 5 on the surface of the heating blank 1, the upper mold 6 is immediately engaged with the lower mold 3,
The heating blank 1 is press-molded along the shape of the cavity formed between the two.
この成形温度は型温度で３０°Ｃ以上が望ましく、温水
などを用いて予め上下型３，６を温度調節しておく。ま
たプレス圧力は２０ｋｇ／−以上が望ましい。The molding temperature is desirably 30° C. or higher in terms of mold temperature, and the temperature of the upper and lower molds 3 and 6 is adjusted in advance using hot water or the like. Further, the press pressure is preferably 20 kg/- or more.
プレス圧力によって加熱ブランク１はキャビティ形状に
成形され、また、型との温度差によって冷却し、成形が
完了する。The heated blank 1 is molded into a cavity shape by the press pressure, and is cooled by the temperature difference with the mold to complete the molding.
また、凸部成形部位では、前記溶融熱可塑性樹脂ピース
４が加わった厚み分の余肉が生じ、この余肉は前記凹部
３ａ内に樹脂流動し、これの内部に充満する。Further, at the convex portion molding portion, an extra thickness corresponding to the added thickness of the molten thermoplastic resin piece 4 is generated, and the resin flows into the recess 3a and fills the interior thereof.
しかしながら、樹脂ピース４の下部側に位置する層１ａ
はこの余肉とともに可塑変形して同時に流動し、極めて
薄い層ではあるが、凹部３ａの表面に回り込む。However, the layer 1a located on the lower side of the resin piece 4
is plastically deformed and flows together with this excess thickness, and although it is an extremely thin layer, it wraps around the surface of the recess 3a.
したがって、成形されたリアパーセル１０を脱型し、裏
面を観察した状態では第５図に示すようにこれに突出形
成されたボス部１２は外見上は前記ブランク１の下部側
の層１ａによる材質がそのまま連続した状態で突出形成
された形状となり、またその内部は樹脂ピース４による
余肉部分がボス部１２の主体を構成した形状となってい
る。Therefore, when the molded rear parcel 10 is demolded and the back surface is observed, the boss portion 12 formed protruding thereon appears to be made of the material of the lower layer 1a of the blank 1, as shown in FIG. The boss portion 12 has a shape in which the boss portion 12 is continuously formed in a protruding manner, and the surplus portion of the resin piece 4 forms the main body of the boss portion 12 inside.
また、この樹脂ピース４の基部はプレス圧力により成形
品内部に偏平にサンドイッチされた状態で前記ボス部１
２の内部に連続しているので、この部分のアンカー効果
によってボス部１２の強度は十分に保たれるものとなる
。Further, the base of the resin piece 4 is flatly sandwiched inside the molded product by press pressure, and the boss portion 1 is
2, the strength of the boss portion 12 is maintained sufficiently due to the anchor effect of this portion.
次に第６図、第７図はこの発明を成形品にリブを一体形
成する場合に適用した第二実施例を示すものである。Next, FIGS. 6 and 7 show a second embodiment in which the present invention is applied to the case where ribs are integrally formed on a molded product.
図において、下型２０の型面のはじの部分にはリブに相
当する深い凹部２０ａがテーパ状に形成されており、前
記実施例と同一手順で下型２０上に加熱ブランク１を設
置した後、端部を層状に剥離し、その内部に加熱溶融し
た熱可塑性樹脂ピース４を挾み込み、次いで上型２１を
型締めするこことで、四部２０ａの内部には樹脂ピース
４を主体とする余肉部分が樹脂流動によって遺り込み、
また、凹部２０ａの表面側には加熱ブランク１の下部の
層１ａが回り込み、リブ２２が突出形成される。In the figure, a deep concave portion 20a corresponding to a rib is formed in the edge portion of the mold surface of the lower mold 20 in a tapered shape. , the end part is peeled off into layers, the heated and melted thermoplastic resin piece 4 is inserted inside it, and then the upper mold 21 is clamped, so that the inside of the four parts 20a is mainly made of the resin piece 4. The extra flesh is left behind by the resin flow,
Further, the lower layer 1a of the heating blank 1 wraps around the surface side of the recess 20a, and a rib 22 is formed to protrude.
この場合、前記リブの長さが実寸法で５〜１０側あると
、表面側を構成する層１ａは全部遷り込み切れない場合
が生ずるが、少なくとも基部側は平坦部分と連続し、先
端部分のみに樹脂ピース４の一部が露出する。しかしな
がら、この部分は他の部品に対して突き合わせたり、係
合する部分であるため、実際上は露出しても見栄えを損
なうことはなく、前記第一実施例と同様に外観が向上し
、強度的にも安定する。In this case, if the length of the rib is 5 to 10 sides in actual size, the layer 1a constituting the surface side may not be completely recessed, but at least the base side is continuous with the flat part, and the tip part Only a portion of the resin piece 4 is exposed. However, since this part is a part that butts against or engages with other parts, in reality, even if it is exposed, it does not spoil the appearance, and as in the first embodiment, the appearance is improved and the strength is increased. It is also stable.
なお、前記各実施例では成形素材としてガラス繊維強化
熱可塑性樹脂を用いた。In each of the above Examples, glass fiber reinforced thermoplastic resin was used as the molding material.
これは、この種の成形素材が加熱後の樹脂流動性に乏し
い半面、加熱後の眉間剥離が容易である点を着目してな
されたものであるが、その他の樹脂、例えばリアパーセ
ルなどのボード部品の成形一般に用いられている成形素
材であるＰＰ、ＰＥまたはこれら樹脂に木粉その他有機
または無機質系のフィラーを混入した樹脂素材であって
も適用できる。This was done based on the fact that this type of molding material has poor resin fluidity after heating, but it is easy to peel off between the eyebrows after heating, but other resins, such as boards such as rear parcels, It is also possible to use PP, PE, which are molding materials generally used for molding parts, or resin materials obtained by mixing these resins with wood flour or other organic or inorganic fillers.
但し、この種の成形素材では溶融状態での剥離が出来な
いので、当初から加熱ブランクを二層としておき、その
間に溶融樹脂ピースをサンドイッチ状に挾み込んだ後に
成形を行うようにすれば良い。However, since this type of molding material cannot be peeled off in the molten state, it is best to form two layers of heated blanks from the beginning, sandwich the molten resin piece between them, and then perform molding. .
（発明の効果）
以上実施例によって詳細に説明したように、この発明に
よる樹脂成形品の成形方法にあっては、以下の効果があ
る。(Effects of the Invention) As described above in detail using the examples, the method for molding a resin molded product according to the present invention has the following effects.
樹脂ピースの増量分の余肉が樹脂流動して成形型の四部
に回り込むが、この樹脂ピースは成形された凸部の表面
に現れることがなく、樹脂ピースの下面側に位置する加
熱ブランクが凸部の表面を構成するので、従来の型構成
により余肉を生じさせる方法に比べてプレス圧力の偏在
による表面の見栄え低下がなく、また下面に樹脂ピース
を設置する場合に比べて色むらやウェルドラインを生ず
ることがなく、強度的も向上する。The extra thickness of the resin piece flows and wraps around the four parts of the mold, but this resin piece does not appear on the surface of the molded convex part, and the heated blank located on the bottom side of the resin piece becomes convex. Since it forms the surface of the part, there is no deterioration in the appearance of the surface due to uneven distribution of press pressure compared to the conventional method of creating excess thickness using the mold structure, and there is less uneven coloring and welding than when installing a resin piece on the bottom surface. No lines are formed and the strength is improved.
したがって、この発明方法によれば、成形品表裏の見栄
えが向上するとともに、強度的にも安定するものとなる
。Therefore, according to the method of the present invention, the appearance of the front and back sides of the molded product is improved, and the strength is also stabilized.
第１図ないし第５図はこの発明の第一実施例を工程順に
示す説明図、第６図、第７図は第二実施例を示す説明図
である。
１・・・シート状ブランク
１ａ・・・下部側の層
２・・・ヒータ
３．２０・・・下型
３ａ、２０ａ・・・四部
４・・・樹脂ピース
６．２１・・・上型
１０・・・リアパーセル
１２・・・ボス部（凸部）
２２・・・リブく凸部）
特許出願人 河西工業株式会社
代理人 弁理士 山木秀樹
１ど
第５図1 to 5 are explanatory diagrams showing a first embodiment of the present invention in the order of steps, and FIGS. 6 and 7 are explanatory diagrams showing a second embodiment. 1...Sheet blank 1a...Lower side layer 2...Heater 3.20...Lower mold 3a, 20a...Four parts 4...Resin piece 6.21...Upper mold 10 ...Rear parcel 12...Boss part (convex part) 22...Ribbed convex part) Patent applicant Kasai Kogyo Co., Ltd. Agent Patent attorney Hideki Yamaki 1. Figure 5
Claims (1)
を加熱した状態で、該加熱ブランクをコールドプレス成
形用の下型上に設置し、次いで上型を下型に係合するこ
とで、型面形状に沿った曲面の成形品を成形するととも
に、該成形品の所定部位に凸部を突出形成するようにし
た樹脂成形品の成形方法において： 前記凸部の突出形成部位において、前記下型状に設置さ
れた加熱ブランクの間に溶融した熱可塑性樹脂ピースを
挾み込んだ状態で上型を下型に係合することで、前記樹
脂ピースが前記凸部形成部位の内部に樹脂流動して凸部
の主要部を構成するようにしたことを特徴とする樹脂成
形品の成形方法。(1) In a heated state, a sheet-shaped blank made of multiple layers of thermoplastic resin is placed on a lower mold for cold press molding, and then the upper mold is engaged with the lower mold to form a mold. In a method for molding a resin molded product, in which a molded product having a curved surface that follows a surface shape is molded, and a convex portion is formed protrudingly at a predetermined portion of the molded product: In the protruding portion of the convex portion, the lower mold By engaging the upper mold with the lower mold in a state where a molten thermoplastic resin piece is sandwiched between heating blanks installed in a shape, the resin piece flows into the convex portion forming region. A method for molding a resin molded product, characterized in that the main part of the convex part is made up of:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63137365A JPH01306210A (en) | 1988-06-06 | 1988-06-06 | Production of resin molded item |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63137365A JPH01306210A (en) | 1988-06-06 | 1988-06-06 | Production of resin molded item |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01306210A true JPH01306210A (en) | 1989-12-11 |
Family
ID=15196977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63137365A Pending JPH01306210A (en) | 1988-06-06 | 1988-06-06 | Production of resin molded item |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01306210A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015513489A (en) * | 2012-03-16 | 2015-05-14 | ジャガー・ランド・ローバー・リミテッドＪａｇｕａｒ Ｌａｎｄ Ｒｏｖｅｒ Ｌｉｍｉｔｅｄ | Composite molding technology |
-
1988
- 1988-06-06 JP JP63137365A patent/JPH01306210A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015513489A (en) * | 2012-03-16 | 2015-05-14 | ジャガー・ランド・ローバー・リミテッドＪａｇｕａｒ Ｌａｎｄ Ｒｏｖｅｒ Ｌｉｍｉｔｅｄ | Composite molding technology |
| US9757907B2 (en) | 2012-03-16 | 2017-09-12 | Jaguar Land Rover Limited | Composite moulding techniques |
| US20170368767A1 (en) * | 2012-03-16 | 2017-12-28 | Jaguar Land Rover Limited | Composite molding techniques |
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