JPH02147217A - Manufacture of window having synthetic resin frame - Google Patents
Manufacture of window having synthetic resin frameInfo
- Publication number
- JPH02147217A JPH02147217A JP63301666A JP30166688A JPH02147217A JP H02147217 A JPH02147217 A JP H02147217A JP 63301666 A JP63301666 A JP 63301666A JP 30166688 A JP30166688 A JP 30166688A JP H02147217 A JPH02147217 A JP H02147217A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- cavity space
- window plate
- window
- foaming agent
- 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
- 229920003002 synthetic resin Polymers 0.000 title claims abstract description 59
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 59
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000004088 foaming agent Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 abstract description 14
- 229920005989 resin Polymers 0.000 abstract description 13
- 239000011347 resin Substances 0.000 abstract description 13
- 238000002347 injection Methods 0.000 abstract description 9
- 239000007924 injection Substances 0.000 abstract description 9
- 239000000839 emulsion Substances 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 239000006260 foam Substances 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000005357 flat glass Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 239000004604 Blowing Agent Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000005340 laminated glass Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000006058 strengthened glass Substances 0.000 description 1
Landscapes
- 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、合成樹脂製の枠を有するウィンドウの製造方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of manufacturing a window having a frame made of synthetic resin.
従来の技術
従来、車輌用等の合成樹脂製枠を有するウィンドウを製
造するのにあたっては第５図で示すようにウィンドウプ
レート１を上型１０と下型１１の内部にシール部１０ａ
、１０ｂ、ｌｌａ、ｌｌｂで挟込んで組付け、第６図で
示す如くウィンドウプレート１の縁辺を挿置した成形型
のキャビティ空間１２の内部にゲート１３から溶融した
合成樹脂を射出し、その合成樹脂をウィンドウプレート
１の縁辺に沿って一体的に被着することにより合成樹脂
製の枠部として成形することが行われている（特開昭５
４−１００２２号、特開昭５６−９９８１７号、特開昭
５７−１７３７号）。2. Description of the Related Art Conventionally, when manufacturing a window having a frame made of synthetic resin for vehicles, etc., a window plate 1 is placed inside an upper mold 10 and a lower mold 11 with a sealing portion 10a as shown in FIG.
, 10b, lla, and llb, and as shown in FIG. A frame made of synthetic resin is formed by integrally applying resin along the edge of the window plate 1 (Japanese Patent Laid-Open No. 1983-1995).
4-10022, JP-A-56-99817, JP-A-57-1737).
発明が解決しようとする課題
然し、この合成樹脂製枠を有するウィンドウでは枠部が
成形後に収縮するところから、ウィンドウプレートを締
付けるよう作用することを免れ得ない、その締付は力が
作用すると、ウィンドウプレートとして板硝子を用いる
ときには材質的に脆弱なものであるので割れが発生し易
く、また、つイントウプレートが全体的に曲面を呈する
ものであるから曲げ応力として作用することにより曲面
を変形する事態も招き易い、これと同様に、ウィンドウ
プレートとしてプラスチック板を用いるときは板硝子よ
りも更に剛性が著しく低いので割れや変形等が生じ易い
。Problems to be Solved by the Invention However, in a window having a frame made of synthetic resin, since the frame shrinks after molding, it is inevitable that the window plate will be tightened. When plate glass is used as a window plate, it is a fragile material and is prone to cracking, and since the toe plate has a curved surface as a whole, the curved surface is deformed by acting as bending stress. Similarly, when a plastic plate is used as a window plate, its rigidity is significantly lower than that of sheet glass, so cracks and deformation are more likely to occur.
また、第７図で示すように自動車用のウィンドウに成形
する合成樹脂製の枠部２は横断面路コの字状を呈する挟
持部２ａの表面側より橋絡辺側２ｂで厚み１．＜１．が
急激に厚くなり、この橋絡辺側２ｂの冷却速度が相対的
に遅くなって収縮が集中することにより表面側にヒケＰ
が生ずることも免れ得ない、それに加えて、ウィンドウ
プレート１は完全に同一形状に成形するのは困難で外形
寸法ｆｔＩにバラ付きがあるものであり、これに対して
キャビティ空間１２の容量は実際上一定であるから、ウ
ィンドウプレート１の縁辺を挿置するキャビティ空間１
２はウィンドウプレート１の縁辺が空間位置Ｌ２に突出
する寸法に応じて容量がウィンドウプレート毎に異なり
、また、キャビティ空間１２に充填する合成樹脂の射出
量は調整で籾でもキャビティ空間１２の容量が変動する
のに応じて各ショット毎に合成樹脂の射出量を調整する
ことはできない、このため、ウィンドウプレート１の外
形寸法旦、が所定寸法よりも大きいときにはキャビティ
空間１２の現実の容積が小さくなるから一定量の合成樹
脂を射出するのに伴ってパリ等が大きく発生することに
なり、また、ウィンドウプレート１の外形寸法ＪｌＫが
所定寸法よりも小さいときにはキャビティ空間１２の容
量が相対的に大きくなるから合成樹脂がキャビティ空間
内に十分行きわたらずしかも保圧することにより追加充
填を行っても外表面側にヒケＰが生ずる原因となる。そ
の外形寸法ＩＬ１のバラ付きは、特に自動車のフロント
ウィンドウやリヤウィンドウのように外形寸法が１ｍを
超えるものになると最大と最少との間で差が極めて大き
いから、キャビティ空間の容積変動が製品に著しい影響
を与えることになる。また、自動車用のウィンドウでは
枠部２の外表面側にクロムメツキした樹脂成形品や金属
薄板等の装飾部材を一体的に被着成形し或いはクリップ
等の止め具を裏面側にインサート成形で一体に取付ける
ことが行われるため、これに伴ってキャビティ空間１２
の容量が変動することがあり、そのキャビティ空間内に
合成樹脂が相対的に高圧で射出されることにより装飾部
材が変形したり或いは止め具等も含めて合成樹脂で押圧
されることにより位置ズレを起こす原因ともなる。Further, as shown in FIG. 7, the frame portion 2 made of synthetic resin molded into an automobile window has a thickness of 1.5 mm on the bridge side 2b from the surface side of the clamping portion 2a, which has a U-shaped cross section. <1. suddenly becomes thicker, the cooling rate on this bridge side 2b becomes relatively slow, and shrinkage concentrates, causing sink marks P on the surface side.
In addition, it is difficult to mold the window plate 1 into a completely identical shape and there are variations in the external dimension ftI, whereas the capacity of the cavity space 12 is actually Since the above is constant, the cavity space 1 in which the edge of the window plate 1 is inserted is
2, the capacity differs for each window plate depending on the dimension of the edge of the window plate 1 protruding into the spatial position L2, and the volume of the cavity space 12 is adjusted by adjusting the injection amount of the synthetic resin filling the cavity space 12. It is not possible to adjust the injection amount of synthetic resin for each shot in response to fluctuations. Therefore, when the external dimensions of the window plate 1 are larger than the predetermined dimensions, the actual volume of the cavity space 12 becomes smaller. As a certain amount of synthetic resin is injected from the window plate 1, a large amount of sparks and the like will occur, and when the external dimension JlK of the window plate 1 is smaller than a predetermined dimension, the capacity of the cavity space 12 will become relatively large. Therefore, the synthetic resin does not sufficiently spread into the cavity space and the pressure is maintained, which causes sink marks P to occur on the outer surface side even if additional filling is performed. The variation in external dimension IL1 is particularly large when the external dimension exceeds 1 m, such as the front window or rear window of an automobile, because the difference between the maximum and minimum dimensions is extremely large. This will have a significant impact. Furthermore, in the case of automobile windows, decorative members such as chrome-plated resin moldings or thin metal plates are integrally molded onto the outer surface of the frame 2, or fasteners such as clips are integrally molded into the back surface by insert molding. Since installation is performed, the cavity space 12
The capacity of the decorative member may change due to the synthetic resin being injected into the cavity space at a relatively high pressure, or the position of the decorative member may shift due to being pressed by the synthetic resin including the stopper. It can also cause
また、キャビティ空間１２に充填される合成樹脂の粘度
の関係で高粘度の合成樹脂を射出するとキャビティ空間
の隅々までに行きわたらないから射出圧を高める必要が
あり、この粘度を下げるには合成樹脂の温度を高めしか
もキャビティ空間の途中で冷却固化しないよう金型の温
度を高める必要が生ずる。そのため、合成樹脂の射出充
填に時間が掛りしかも射出成形後の冷却固化にも時間が
掛るところから成形時間が長くなる。更に、合成樹脂の
射出圧を高めるのに伴ってキャビティ空間の内部圧が高
まるから、キャビティ型１０とコア型１１とからなる成
形型のシール部１０ａ、１０ｂ、ｌｌａ、ｌｌｂより合
成樹脂が漏れ出てパリを発生し、また、キャビティ空間
１２の内部圧に耐え得るよう圧締力を高めるとウィンド
ウプレート１を破損する事態を招き易い。Furthermore, due to the viscosity of the synthetic resin filled into the cavity space 12, if high viscosity synthetic resin is injected, it will not reach every corner of the cavity space, so it is necessary to increase the injection pressure. In addition to raising the temperature of the resin, it is also necessary to raise the temperature of the mold so that it does not cool and solidify in the middle of the cavity space. Therefore, it takes time to inject and fill the synthetic resin, and it also takes time to cool and solidify the resin after injection molding, resulting in a long molding time. Furthermore, since the internal pressure of the cavity space increases as the injection pressure of the synthetic resin increases, the synthetic resin leaks from the sealing parts 10a, 10b, lla, and llb of the mold consisting of the cavity mold 10 and the core mold 11. Moreover, if the clamping force is increased to withstand the internal pressure of the cavity space 12, the window plate 1 is likely to be damaged.
韮において、本発明は成形型のキャビティ空間に充填さ
れる合成樹脂の温度に影響されずにしかもキャビティ空
間が各ショット毎に変動しても対応可能でウィンドウプ
レートに過大な締付は力を与えないよう合成樹脂製の枠
を設けたウィンドウの製造方法を提供することを目的と
する。The present invention is not affected by the temperature of the synthetic resin filled into the cavity space of the molding die, and can also cope with changes in the cavity space from shot to shot, and excessive tightening of the window plate can cause force. It is an object of the present invention to provide a method for manufacturing a window provided with a frame made of synthetic resin so as to prevent the occurrence of damage.
課題を解決するための手段
本発明に係る合成樹脂製枠を有するウィンドウの製造方
法においては、ウィンドウプレートの縁辺を挿置した成
形型のキャビティ空間の容積よりも相対的に少量で発泡
剤を均一に分散混入したエマルジョン状の合成樹脂を少
なくとも１００Ｋｇ／ｃ＋ａ’以下の低圧で低速にキャ
ビティ空間の内部に射出し、そのキャビティ空間の内部
で発泡剤を自然発泡させて合成樹脂を膨張することによ
りキャビティ空間の全内面に圧接し、この冷却固化後に
ウィンドウプレートを型外しするようにされている。Means for Solving the Problems In the method of manufacturing a window having a synthetic resin frame according to the present invention, the blowing agent is uniformly applied in a smaller amount than the volume of the cavity space of the mold into which the edge of the window plate is inserted. An emulsion-like synthetic resin dispersed in the resin is injected into the cavity space at low speed at a low pressure of at least 100 kg/c+a' or less, and the foaming agent is naturally foamed inside the cavity space to expand the synthetic resin. The window plate is pressed against the entire inner surface of the space, and the window plate is removed from the mold after being cooled and solidified.
作用
本発明に係る合成樹脂製枠を有するウィンドウの製造方
法では枠部の成形後に収縮が生じても発泡層で緩衝でき
るところからウィンドウプレートを損壊したり或いは形
状を変形することを防止できる。また、発泡剤を均一に
分散混入した合成樹脂を成形型のキャビティ空間の容積
よりも少量で低圧で低速に射出して発泡剤を自然に発泡
させることにより合成樹脂を膨張させて枠部を形成する
から合成樹脂の粘度が高くてもキャビティ空間内に円滑
に合成樹脂を充填でき枠部を確実に形成できるばかりで
なく、その発泡圧でキャビティ空間面に圧接できるとこ
ろから外表面にヒケ等を発生させずに所望通りの形状に
成形できるようになる。Function: In the method for manufacturing a window having a synthetic resin frame according to the present invention, even if the frame portion shrinks after molding, the foam layer can cushion the shrinkage, thereby preventing damage to the window plate or deformation of the window plate. In addition, a synthetic resin with a uniformly dispersed foaming agent mixed therein is injected at a low pressure and low speed in a smaller amount than the volume of the cavity space of the molding die, allowing the foaming agent to naturally foam, thereby expanding the synthetic resin and forming the frame. Therefore, even if the viscosity of the synthetic resin is high, the synthetic resin can be smoothly filled into the cavity space and the frame can be reliably formed, and the foaming pressure can press against the surface of the cavity space, preventing sink marks on the outer surface. It becomes possible to mold into a desired shape without causing generation.
実施例
以下、第１〜４図を参照して説明すれば、次の通りであ
る。An example will be described below with reference to FIGS. 1 to 4.
この合成樹脂製枠を有するウィンドウは各種の車輌、航
空機等に装備するものに適用できるものであり、第１〜
４図で示すウィンドウは自動車のフロントウィンドウが
例示されている。This window with a synthetic resin frame can be applied to various vehicles, aircraft, etc.
The window shown in FIG. 4 is an example of a front window of an automobile.
そのウィンドウは、第１図で示すようにウィンドウプレ
ート１の縁辺に沿って横断面略コ字状を呈する挟持部２
ａを持つ枠部２が発泡剤を均一に分散混入した合成樹脂
で一体的に被着成形されている。そのウィンドウプレー
ト１としては板硝子や樹脂成形プレートを用いることが
でき、また、これに被着する枠部２はポリ塩化ビニル、
ポリエチレン、ポリスチレン、ＡＢＳの如き汎用樹脂や
ポリアミド、変性ＰＰＯのようなエンジニアリングプラ
スチックに発泡剤を均等に混入したエマルジョン状の合
成樹脂で形成することができる。As shown in FIG.
A frame portion 2 having a shape is integrally molded with a synthetic resin in which a foaming agent is uniformly dispersed. The window plate 1 can be made of sheet glass or a resin molded plate, and the frame 2 attached to it can be made of polyvinyl chloride,
It can be formed from an emulsion-like synthetic resin in which a blowing agent is evenly mixed into a general-purpose resin such as polyethylene, polystyrene, or ABS, or an engineering plastic such as polyamide or modified PPO.
このウィンドウを製造するにあたってはウィンドウプレ
ート１の一辺にのみ沿って枠部２を成形するときは一つ
のゲートから合成樹脂を射出する成形型を用いればよい
が、第２図で示すようにウィンドウプレート１の周縁辺
に沿って枠部を形成するときには縁辺１ａ、ｌｂ、ｌｃ
を挿置するキャビティ空間１２の数個所にゲート１３ａ
。In manufacturing this window, when molding the frame 2 along only one side of the window plate 1, it is sufficient to use a mold that injects synthetic resin from one gate, but as shown in FIG. When forming a frame along the peripheral edge of 1, the edge 1a, lb, lc
Gates 13a are installed at several locations in the cavity space 12 where the
.
１３ｂ、１３ｃを設けた成形型を用いるとよい。It is preferable to use a mold provided with 13b and 13c.
そのキャビティ型１０とコア型１１とからなる成形型を
用いては合成樹脂２′を左右に流動するよう射出すると
、合成樹脂２’ 、２’の合流により発生するウェルド
ラインをウィンドウプレートｌのコーナ一部分に位置さ
せて枠部を形成できることによりウェルドラインが目立
たないで美観を損なわないところから好ましい、また、
このキャビティ空間１２に合成樹脂を射出するときには
通常のインジェクション成形による樹脂射出圧の１００
にｇ／ｌａｂ”以下で好ましくは４０〜５０ Ｋｇ７ｃ
ｍ２程度の低圧で射出すればよく、その射出速度は上述
したインジェクション成形時の約１／１０程度でキャピ
テイ空間１２の全域に行きわたるのに５〜６秒程度の低
速で行うとよい、このキャビティ型１０とコア型１１に
は加温油等を供給することによる加熱手段１４．１４・
・・を備え、或いはそれに代えてヒータ等を備付けるこ
とにより使用する樹脂の流動性に応じて６０℃〜１２０
’ｅに保温する。When the synthetic resin 2' is injected so as to flow from side to side using the mold consisting of the cavity mold 10 and the core mold 11, weld lines generated by the merging of the synthetic resins 2' and 2' are formed at the corners of the window plate l. It is preferable because the frame part can be formed by positioning it in one part, so that the weld line is not noticeable and does not spoil the aesthetic appearance.
When injecting synthetic resin into this cavity space 12, the resin injection pressure of normal injection molding is 100%.
g/lab” or less, preferably 40 to 50 Kg7c
It is sufficient to inject at a low pressure of about m2, and the injection speed is about 1/10 that of the above-mentioned injection molding, and it is preferable to perform the injection at a low speed of about 5 to 6 seconds to cover the entire cavity space 12. Heating means 14.14 by supplying heating oil etc. to the mold 10 and the core mold 11.
60°C to 120°C depending on the fluidity of the resin used, or by installing a heater etc. instead.
'e Keep warm.
この成形型内には接着剤層を端面に予め設けて成形型と
同程度に保温したウィンドウプレート１を載置して型締
めを行った後、ゲート１３ａ、１３ｂ、１３ｃから溶融
した合成樹脂２′を最少のキャビティ空間１２の容積よ
りも相対的に少量だけ射出し、好ましくは７０％〜９０
％程度充填するとよい。その合成樹脂２′はキャビティ
型１゜とコア型１１が加温されているので、型面で直ち
に冷却固化されずしかもキャビティ空間１２の成形面と
の摩擦抵抗が小さいことによりキャビティ空間１２の内
部をスムーズに流動し、これに伴って合成樹脂２′に含
まれている発泡剤が自然発泡することにより合成樹脂２
′が膨張してキャビティ空間１２の内部に充満されるよ
うになる。この合成樹脂を所定量充填後、射出ノズルを
キャビティ型１０とコア型１１から離脱させてキャビテ
ィ型１０とコア型１１をそのまま放置すると発泡剤が完
全に発泡して自然冷却することにより固化するから、こ
の後に型外しすればよい。Inside this mold, a window plate 1 with an adhesive layer provided on the end surface in advance and kept as warm as the mold was placed, and after the mold was clamped, a synthetic resin 2 was melted from the gates 13a, 13b, and 13c. ' is injected in a relatively small amount than the volume of the smallest cavity space 12, preferably 70% to 90%.
It is best to fill it to about %. Since the synthetic resin 2' is heated in the cavity mold 1° and the core mold 11, it is not immediately cooled and solidified on the mold surface, and the frictional resistance with the molding surface of the cavity space 12 is small, so that the synthetic resin 2' is heated inside the cavity space 12. The synthetic resin 2' flows smoothly, and the foaming agent contained in the synthetic resin 2' naturally foams.
' expands and fills the cavity space 12. After filling a predetermined amount of this synthetic resin, if the injection nozzle is removed from the cavity mold 10 and core mold 11 and the cavity mold 10 and core mold 11 are left as they are, the foaming agent will completely foam and solidify by natural cooling. , then remove it from the mold.
このようにして合成樹脂製枠を有するウィンドウを製造
するときにはキャビティ空間１２に発泡剤の自然発泡に
より合成樹脂２′を膨張させて均一に充填させることに
より固化できるのでウィンドウプレート１の縁面に過大
な圧力が掛らず破損が防止できると共に枠部２の外表面
にヒケ等が発生することはない、また、′ｓ４図で示す
ように枠部２には装飾成形品３を一体成形することもで
き、その場合には装飾成形品３に高い圧力が加わらない
ので変形乃至は破損させたすせず、或いは真空吸着等で
簡単に固定できるからズレ動かしたりする事態も生じな
い。When manufacturing a window having a synthetic resin frame in this manner, the synthetic resin 2' is expanded and uniformly filled into the cavity space 12 by natural foaming of the foaming agent, and the resin 2' is solidified. Damage can be prevented without excessive pressure being applied, and sink marks etc. do not occur on the outer surface of the frame part 2. In addition, as shown in Figure 's4, the decorative molded product 3 can be integrally molded on the frame part 2. In that case, high pressure is not applied to the decorative molded product 3, so it will not be deformed or damaged, and since it can be easily fixed by vacuum suction or the like, there will be no possibility of it shifting or moving.
発明の効果
以上の如く、本発明に係る合成樹脂製枠を有するウィン
ドウの製造方法に依れば、枠部が発泡樹脂で形成されて
いるから冷却に伴って枠部が熱収縮してもウィンドウプ
レートに作用する締付は力を緩和できてウィンドウプレ
ートを破損したり或いは変形する事態が発生せず、また
、キャビティ空間よりも相対的に少量の合成樹脂を射出
することにより発泡に伴ってキャビティ空間の内面に発
泡剤の自然発泡により合成樹脂を膨張させて均一に充填
させることができるから、キャビティ空間の容積が各シ
ョット毎に変動しても合成樹脂を安定に充満させること
ができることによりヒケ等を発生させずに所定の外郭形
状を保って枠部を形成するようにできる。これに加えて
、ウィンドウプレートには高い圧力が掛らないので硝子
のような脆弱な材質或いは中間膜をサンドイッチ成形し
た非強化ガラスの合せガラス等でも破損することがなく
、また、成形型の締付は力も小さくてよいから成形機と
しては小型なものを用い得しかもウィンドウプレートを
圧縮で破損させたり或いは傷付けるのを防止することが
できる。また、外表面にはスキン層が形成されるので外
表面を美麗に成形でき、特に合成樹脂をキャビティ空間
に低速で注入するので流動樹脂がキャビティ空間内で乱
れずに流線形を保て流動するのでリム成形による如くス
ワールマークが外表面に発生することもない。Effects of the Invention As described above, according to the method for manufacturing a window having a synthetic resin frame according to the present invention, since the frame is made of foamed resin, even if the frame shrinks due to heat shrinkage due to cooling, the window will remain intact. The tightening force acting on the plate can be relaxed and the window plate will not be damaged or deformed. Also, by injecting a relatively small amount of synthetic resin compared to the cavity space, the cavity will be closed as foaming occurs. The synthetic resin can be expanded and uniformly filled into the inner surface of the cavity by the natural foaming of the foaming agent, so even if the volume of the cavity space varies from shot to shot, the synthetic resin can be stably filled, thereby eliminating sinks. The frame portion can be formed while maintaining a predetermined outer shape without causing any problems such as the like. In addition, since high pressure is not applied to the window plate, fragile materials such as glass or laminated glass made of non-strengthened glass sandwich-molded with an interlayer film will not be damaged. Since the attachment requires little force, a compact molding machine can be used, and the window plate can be prevented from being damaged or damaged by compression. In addition, since a skin layer is formed on the outer surface, the outer surface can be molded beautifully.In particular, since the synthetic resin is injected into the cavity space at a low speed, the flowing resin maintains a streamlined shape and flows without being disturbed within the cavity space. Therefore, swirl marks are not generated on the outer surface as is the case with rim molding.
第１図は本発明に係る方法で製造した合成樹脂製枠を有
するウィンドウの部分側断面図、第２〜４図は同ウィン
ドウの製造工程を示す説明図、第５．６図は従来例に係
る合成樹脂製枠を有するウィンドウの成形工程を示す説
明図、第７図は同ウィンドウの問題点を示す説明図であ
る。
１：ウィンドウプレート、２：枠部、２′ ：発泡剤を
混入した合成樹脂、１２；キャビティ空間。
第５図
第 ６ 図
第７図Fig. 1 is a partial side sectional view of a window having a synthetic resin frame manufactured by the method according to the present invention, Figs. 2 to 4 are explanatory diagrams showing the manufacturing process of the same window, and Fig. 5.6 is a conventional example. FIG. 7 is an explanatory diagram showing the molding process of a window having such a synthetic resin frame, and FIG. 7 is an explanatory diagram showing problems with the window. 1: window plate, 2: frame, 2': synthetic resin mixed with foaming agent, 12: cavity space. Figure 5 Figure 6 Figure 7
Claims (1)
ャビティ空間（１２）の容積よりも相対的に少量で発泡
剤を均一に分散混入したエマルジョン状の合成樹脂（２
′）を少なくとも１００Ｋｇ／ｃｍ＾２以下の低圧で低
速にキャビティ空間（１２）の内部に射出し、そのキャ
ビティ空間（１２）の内部で発泡剤を自然発泡させて合
成樹脂（２′）を膨張することによりキャビティ空間（
１２）の全内面に圧接し、この冷却固化後にウィンドウ
プレート（１）を型外しするようにしたことを特徴とす
る合成樹脂製枠を有するウィンドウの製造方法。An emulsion-like synthetic resin (2) containing a foaming agent uniformly dispersed in a relatively small amount compared to the volume of the cavity space (12) of the mold into which the edge of the window plate (1) is inserted.
') is injected into the cavity space (12) at low speed at a low pressure of at least 100 kg/cm^2 or less, and the foaming agent is naturally foamed inside the cavity space (12) to expand the synthetic resin (2'). By doing so, the cavity space (
12) A method for manufacturing a window having a synthetic resin frame, characterized in that the window plate (1) is pressed against the entire inner surface of the synthetic resin frame, and the window plate (1) is removed from the mold after being cooled and solidified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63301666A JPH02147217A (en) | 1988-11-29 | 1988-11-29 | Manufacture of window having synthetic resin frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63301666A JPH02147217A (en) | 1988-11-29 | 1988-11-29 | Manufacture of window having synthetic resin frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02147217A true JPH02147217A (en) | 1990-06-06 |
Family
ID=17899668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63301666A Pending JPH02147217A (en) | 1988-11-29 | 1988-11-29 | Manufacture of window having synthetic resin frame |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02147217A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07237444A (en) * | 1994-03-02 | 1995-09-12 | Hashimoto Forming Ind Co Ltd | Window assembly for vehicle and manufacture thereof |
| DE10101527A1 (en) * | 2000-01-18 | 2002-08-01 | Denso Corp | Air passage switching door and method of manufacturing the same |
| JP2010162823A (en) * | 2009-01-19 | 2010-07-29 | Mazda Motor Corp | Method and apparatus for molding foamed resin molded product |
| JP2016539026A (en) * | 2013-11-22 | 2016-12-15 | サン−ゴバン グラス フランス | Method for forming glass sealing member for transportation means, window glass and mold for transportation means |
| WO2019121354A1 (en) * | 2017-12-22 | 2019-06-27 | Agc Glass Europe | Mold to overmold a plastic material to at least a portion of the periphery of a glazing panel |
-
1988
- 1988-11-29 JP JP63301666A patent/JPH02147217A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07237444A (en) * | 1994-03-02 | 1995-09-12 | Hashimoto Forming Ind Co Ltd | Window assembly for vehicle and manufacture thereof |
| DE10101527A1 (en) * | 2000-01-18 | 2002-08-01 | Denso Corp | Air passage switching door and method of manufacturing the same |
| US6641768B2 (en) | 2000-01-18 | 2003-11-04 | Denso Corporation | Method for manufacturing an air passage switching door |
| JP2010162823A (en) * | 2009-01-19 | 2010-07-29 | Mazda Motor Corp | Method and apparatus for molding foamed resin molded product |
| US8337186B2 (en) | 2009-01-19 | 2012-12-25 | Mazda Motor Corporation | Method and apparatus for molding resin foam product |
| EP2208598A3 (en) * | 2009-01-19 | 2017-11-22 | Mazda Motor Corporation | Method and apparatus for molding resin foam product |
| JP2016539026A (en) * | 2013-11-22 | 2016-12-15 | サン−ゴバン グラス フランス | Method for forming glass sealing member for transportation means, window glass and mold for transportation means |
| WO2019121354A1 (en) * | 2017-12-22 | 2019-06-27 | Agc Glass Europe | Mold to overmold a plastic material to at least a portion of the periphery of a glazing panel |
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