JPH02229026A - Molding method of crystallized synthetic resin sheet - Google Patents
Molding method of crystallized synthetic resin sheetInfo
- Publication number
- JPH02229026A JPH02229026A JP5137689A JP5137689A JPH02229026A JP H02229026 A JPH02229026 A JP H02229026A JP 5137689 A JP5137689 A JP 5137689A JP 5137689 A JP5137689 A JP 5137689A JP H02229026 A JPH02229026 A JP H02229026A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- sheet
- molding
- heating
- heated
- 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 57
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 57
- 238000000465 moulding Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims description 19
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 4
- 229920003051 synthetic elastomer Polymers 0.000 claims description 4
- 239000005061 synthetic rubber Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 2
- 238000002425 crystallisation Methods 0.000 abstract description 5
- 230000008025 crystallization Effects 0.000 abstract description 5
- 229920000728 polyester Polymers 0.000 abstract description 5
- 229920001971 elastomer Polymers 0.000 abstract description 2
- 229920001684 low density polyethylene Polymers 0.000 abstract description 2
- 239000004702 low-density polyethylene Substances 0.000 abstract description 2
- 239000005060 rubber Substances 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 229940099514 low-density polyethylene Drugs 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 10
- 239000011347 resin Substances 0.000 description 10
- 239000010410 layer Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- -1 polyethylene terephthalate Polymers 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000007652 sheet-forming process Methods 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming 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、延伸後熱固定させ結晶化させた合成樹脂シー
トを成形する方法に関する。なお、この明細書中におい
ては、合成樹脂シートには、合成樹脂フィルムを含むも
のとする。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for molding a synthetic resin sheet that has been stretched, heat-set, and crystallized. Note that in this specification, the synthetic resin sheet includes a synthetic resin film.
（従来の技術）
一般に、結晶化されたポリエステルシート等、結晶化さ
れた合成樹脂シー１−を成形する際には、第６図に示す
ように、シート２１をヒータ２２にて加熱した後、この
シート２１を真空吸引するか又はプレス型で押圧して成
形型２３に密着さ−ける真空成形法やプレス成形法が行
われている。(Prior Art) Generally, when molding a crystallized synthetic resin sheet 1- such as a crystallized polyester sheet, as shown in FIG. 6, after heating the sheet 21 with a heater 22, A vacuum forming method or a press forming method is carried out in which the sheet 21 is vacuum-suctioned or pressed with a press mold to be brought into close contact with the mold 23.
（発明が解決しようとする課題）
しかし、シート２１を予めヒータ２２にて加熱している
ため、シート２１をかなりの高温に加熱した後、冷却す
る過程で吸引又は押圧して成形することになり、第５図
に示すように加熱収縮率は加熱温度が高い程大きいため
に、かなり大きな収縮が発生し、成形型に精度良く密着
させた成形が不可能である。(Problem to be Solved by the Invention) However, since the sheet 21 is heated in advance with the heater 22, the sheet 21 must be heated to a fairly high temperature and then formed by suction or pressure during the cooling process. As shown in FIG. 5, the higher the heating temperature, the higher the heating shrinkage rate, so a considerably large shrinkage occurs, making it impossible to mold the material in close contact with the mold with high accuracy.
例えば、近年需要が増大しているキーボード板を成形加
工する場合には、ポリエステルシートに印刷を行い、そ
の印刷に合わせた凹凸のある成形加工を行う必要がある
が、上記方法で成形しても成形部の端部に大きなアール
ができてしまい、角がうまく出なかったり、印刷と凹凸
にずれを生したり、熱収縮による成形品の反りや変形を
生ずるまた、前記結晶化された合成樹脂シートとしては
、他の合成樹脂シートと結合されているものや結晶化さ
れた合成樹脂シートに印刷層や糊層が設けであるもので
もよい。For example, when molding a keyboard board, which has been in increasing demand in recent years, it is necessary to print on a polyester sheet and mold it with unevenness to match the printing. A large radius is formed at the end of the molded part, which may cause the corners to not come out properly, misalignment between printing and unevenness, or warping or deformation of the molded product due to heat shrinkage. The sheet may be one that is combined with another synthetic resin sheet or one that is a crystallized synthetic resin sheet provided with a printed layer or an adhesive layer.
（作 用）
本発明の上記構成によれば、加熱された合成樹脂又はゴ
ム材を用いて加熱しながら加圧成形するので、結晶化さ
れた合成樹脂シー１−の結晶化を守る適温で加熱しなが
ら成形し、成形型に密着させて成形した後冷却するため
、加熱温度を必要最小限に低くできて収縮が発生し難く
、角が正確に成形されて寸法精度の良い成形が可能とな
り、印刷ずれも生じず、反りや変形も生じない。(Function) According to the above structure of the present invention, since the heated synthetic resin or rubber material is press-molded while being heated, it is heated at an appropriate temperature to protect the crystallization of the crystallized synthetic resin sheet 1-. Since the material is molded while it is being molded, and it is cooled after being molded in close contact with the mold, the heating temperature can be lowered to the minimum necessary, making it difficult for shrinkage to occur, allowing for accurate molding of corners, and molding with high dimensional accuracy. No printing misalignment occurs, and no warping or deformation occurs.
（実施例）
以下、本発明の一実施例を第１図（ａ）〜（ｄ）を参照
しながら説明する。(Example) Hereinafter, an example of the present invention will be described with reference to FIGS. 1(a) to (d).
１は、二軸延伸後熱固定させ結晶化を起こさせたポリエ
ステルシート（ポリエチレンテレフタレ） （ＰＥＴ）
二軸延伸シー［・）で、肉厚は０１２５ｍｍである。２
は成形型で、その−上面の中央等の問題がある。1 is a polyester sheet (polyethylene terephthalate) (PET) that is heat-set and crystallized after biaxial stretching.
The biaxially stretched sheet [·) has a wall thickness of 0125 mm. 2
is a mold, and there is a problem with the center of its upper surface.
本発明は−１−記従来の問題点に篤み、結晶化された合
成樹脂シートの特性を極力保持して、反りや加熱収縮を
発生させず、寸法精度の良い成形品を得ることができる
結晶化された合成樹脂シー１−の成形方法を提供するこ
とを目的とする。The present invention addresses the conventional problems listed in -1-, maintains the properties of the crystallized synthetic resin sheet as much as possible, prevents warpage and heat shrinkage, and makes it possible to obtain molded products with good dimensional accuracy. An object of the present invention is to provide a method for molding a crystallized synthetic resin sheet 1-.
（課題を解決するだめの手段）
本発明は、」１記目的を達成するため、結晶化された合
成樹脂シートを成形型」二に位置させ、その上面より加
熱された合成樹脂又はゴム材を押圧して加熱加圧した後
冷却することを特徴とする。(Another Means to Solve the Problems) In order to achieve the object 1, the present invention places a crystallized synthetic resin sheet in a mold 2, and pours a heated synthetic resin or rubber material from the upper surface of the sheet into a mold. It is characterized by being pressed, heated and pressurized, and then cooled.
前記加熱加圧用合成樹脂を７０〜２２０°Ｃに加熱し、
１． Ｏｋｇｆ／ｃｍ２以上の圧力で押圧するのが適当
である。Heating the heating and pressurizing synthetic resin to 70 to 220°C,
1. It is appropriate to press with a pressure of 0 kgf/cm2 or more.
前記加熱加圧用合成樹脂は成形後分離して再使用すると
よい。又、成形し７ない部分を押え枠にて成形型に密着
保持した後、加熱加圧用合成樹脂を抑圧するのが好まし
い。さらに、結晶化された合成樹脂シートの片面又は両
面に保護シートを貼着して成形してもよい。The synthetic resin for heating and pressing is preferably separated and reused after molding. Moreover, it is preferable to hold the portion that is not to be molded 7 in close contact with the mold using a presser frame, and then to suppress the synthetic resin for heating and pressing. Furthermore, a protective sheet may be attached to one or both sides of the crystallized synthetic resin sheet and molded.
部の５０ｍｍＸ５０ｍｍの成形部に１０ｍｍＸ １０ｍ
ｍ角で深さが！、ｍｍの９個の成形四部３が基盤目状に
形成されている。先ず、第１図（ａ）に示すように、こ
の成形型２の−に面に前記シート１を載置し、その周囲
を成形型２の上面に押え枠４にて固定する。10mm x 10m in the 50mm x 50mm molding part
Depth with m square! , mm, nine molded parts 3 are formed in the shape of a base grid. First, as shown in FIG. 1(a), the sheet 1 is placed on the - side of the mold 2, and its periphery is fixed to the upper surface of the mold 2 with a presser frame 4.
次に、この押え枠４の内側の前記シート１上に、１５０
°Ｃに加熱した低密度ポリエチレンからなる加熱加圧用
合成樹脂５を配置し、その上に押圧板６を配置する。そ
の後、加熱加圧用合成樹脂５を押圧板６にて１０ｔの力
で５秒間押圧する。すると、第１図（ｂ）に示すように
、シート１が加熱加圧用合成樹脂５にて加熱されながら
押圧され、成形型２の成形四部３に沿うように成形され
、成形後室温の成形型２にて冷却される。このとき、シ
ート１はヒータで高温に加熱された後成形されるのでは
なく、結晶化を守る適当な温度に加熱された加熱カロ圧
用合成樹脂５にて加熱されながら成形され、成形後冷却
されるので、シート１は必要最小限の加熱温度で加熱さ
れ、加熱収縮率を小さく抑えることができ、収縮が発生
し難いために寸法精度の良い成形が得られる。その後、
押圧板６、押え枠４を取り外し、第１図（Ｃ）に示すよ
うに、シート１を加熱加圧用合成樹脂５とともに成形型
２から取り出し、さらに第１図（ｄ）に示すように、シ
ートｌと加熱加圧用合成樹脂５を分離することによって
成形されたシート１を得る。なお、分離した加熱加圧用
合成樹脂５は再使用される。Next, on the sheet 1 inside this presser frame 4, 150
A heating and pressing synthetic resin 5 made of low density polyethylene heated to 0.degree. C. is placed, and a pressing plate 6 is placed thereon. Thereafter, the synthetic resin 5 for heating and pressing is pressed by a pressing plate 6 with a force of 10 t for 5 seconds. Then, as shown in FIG. 1(b), the sheet 1 is pressed while being heated by the synthetic resin 5 for heating and pressing, and is molded along the molding parts 3 of the mold 2. After molding, the sheet 1 is placed in the mold at room temperature. It is cooled at 2. At this time, the sheet 1 is not molded after being heated to a high temperature with a heater, but is molded while being heated with a heated Calorie pressure synthetic resin 5 heated to an appropriate temperature to protect crystallization, and then cooled after molding. Therefore, the sheet 1 is heated at the minimum necessary heating temperature, the heating shrinkage rate can be kept low, and since shrinkage is less likely to occur, molding with good dimensional accuracy can be obtained. after that,
The pressing plate 6 and the holding frame 4 are removed, and the sheet 1 is taken out from the mold 2 together with the heating and pressing synthetic resin 5 as shown in FIG. 1(C). A molded sheet 1 is obtained by separating the molded sheet 1 and the synthetic resin 5 for heating and pressing. Note that the separated synthetic resin 5 for heating and pressing is reused.
前記結晶化された合成樹脂シート１としては、上記実施
例のポリエステルシートの外、ポリエチレンシートやポ
リプロピレンシート等を用いることができ、その肉厚は
０，０１〜２ｍｍ程度の範囲のものに適用できる。又、
シート１は、結晶化された合成樹脂シートの単一シート
に限らず、他の合成樹脂シートを結合したものを用いる
こともでき、シート１に印刷層を形成したり、糊層を形
成したものでも良い。さらに、シート１の片面又は両面
に保護シートを貼着して成・形してもよい。その具体例
を第２図に示す。第２図に示すシートはキーボード板成
形用のシートであって、結晶化されたシート１の片面に
印刷層７が形成されるととを示したが、第３図（ａ）、
（ｂ）に示すように、射出成形機を用いて、射出樹脂に
て加熱加圧するようにすることもできる。As the crystallized synthetic resin sheet 1, in addition to the polyester sheet of the above embodiment, a polyethylene sheet, a polypropylene sheet, etc. can be used, and the thickness thereof can be applied to a range of about 0.01 to 2 mm. . or,
Sheet 1 is not limited to a single sheet of crystallized synthetic resin sheet, but may also be a combination of other synthetic resin sheets, and sheet 1 may have a printed layer or a glue layer formed thereon. But it's okay. Furthermore, a protective sheet may be attached to one or both sides of the sheet 1 and molded/shaped. A specific example is shown in FIG. The sheet shown in FIG. 2 is a sheet for forming a keyboard board, and the printed layer 7 is formed on one side of the crystallized sheet 1.
As shown in (b), it is also possible to heat and press the injected resin using an injection molding machine.
第３図（ａ）、（ｂ）において、１１は可動側型板、１
２は固定側型板で、これら型板１１．１２の当接面間に
シート１を挟圧固定するように構成されている。又、こ
れら型板１１．１２は水冷されており、可動側型板１１
の上面に成形凹部１３が形成されている。固定側型板１
２の中央部には、射出成形機本体（図示せず）の射出ノ
ズルから射出された射出樹脂が流入するスプルー１４が
設けられ、その下端に設けられたゲート１５を介して各
成形四部１３に対向する位置まで射出樹脂を供給するラ
ンナー１６が設けられている。In FIGS. 3(a) and 3(b), 11 is a movable side mold plate;
Reference numeral 2 denotes a stationary template, which is configured to clamp and fix the sheet 1 between the contact surfaces of these templates 11 and 12. In addition, these templates 11 and 12 are water-cooled, and the movable template 11
A molded recess 13 is formed on the upper surface of the holder. Fixed side template 1
A sprue 14 is provided in the center of the injection molding machine body (not shown) through which the injection resin flows, and the sprue 14 flows into each of the four molded parts 13 through a gate 15 provided at the lower end of the sprue 14. A runner 16 is provided that supplies the injection resin to the opposing position.
この実施例においては、第３図（ａ）に示すようにシー
ト１を型板１１．１２間に介装した後、これら型板１１
．１２を閉してシートｌを挟持し、次に射出ノズルから
加熱溶融した樹脂を射出して、第３図（ｂ）に示すよう
に、この射出樹脂１７にてシート１を加熱しながら押圧
し、シートｌを成形口もにその上に糊層８が形成され、
このシートの両面に保護シート９ａ、９ｂが貼着されて
いる。In this embodiment, after the sheet 1 is interposed between the templates 11 and 12 as shown in FIG.
．． 12 is closed to sandwich the sheet 1, then heated and molten resin is injected from the injection nozzle, and as shown in FIG. 3(b), the sheet 1 is heated and pressed with the injected resin 17. , the sheet l is placed in the molding mouth, and a glue layer 8 is formed thereon;
Protective sheets 9a and 9b are attached to both sides of this sheet.
前記加熱加圧用合成樹脂５は、ポリエチレン、ポリプロ
ピレン、塩化ビニールやゴム材など、加熱すると流動性
を持つように熱的挙動変化を呈するものであればよい。The synthetic resin 5 for heating and pressurizing may be any material such as polyethylene, polypropylene, vinyl chloride, or rubber material, as long as it exhibits a thermal behavior change so as to have fluidity when heated.
又、加熱加圧用合成樹脂５の加熱温度は、結晶化された
合成樹脂シートの種類によって異なるが、７０〜２２０
°Ｃ程度が適当であり、加圧条件は１０ｋｇｆ／ｃｍ”
以上必要である。即ち、シート１の弓張強度及び伸び率
と加熱温度との関係は、例えば上記実施例のポリエステ
ルシートの場合には第４図に示すような関係にあり、こ
のような条件以下の場合には成形性が悪く、成形型への
密着性が劣り、精密な成形品が得られ難い。また、加圧
時間はシート１の円滑な成形のために０．３秒以上必要
である。Further, the heating temperature of the synthetic resin 5 for heating and pressing varies depending on the type of crystallized synthetic resin sheet, but is 70 to 220°C.
Appropriate temperature is around °C, and pressurization condition is 10 kgf/cm”
The above is necessary. That is, the relationship between the bow tensile strength and elongation rate of the sheet 1 and the heating temperature is as shown in FIG. It has poor properties and poor adhesion to the mold, making it difficult to obtain precise molded products. Further, the pressing time is required to be 0.3 seconds or more in order to form the sheet 1 smoothly.
以上の実施例では、成形型２の上にシー）１を配置し、
その上に加熱加圧用樹脂５を配置して押圧板６にて押圧
することによって加熱加圧する例部１３に沿うように成
形する。その後、型板１１．１２を開いて成形されたシ
ートｌを射出樹脂１７とともに取り出し、射出樹脂１７
を分離することによって成形されたシート１が得られる
。In the above embodiment, the sheet) 1 is placed on the mold 2,
A heating and pressing resin 5 is placed thereon and pressed by a pressing plate 6 to form the resin along the example portion 13 to be heated and pressed. After that, the template 11.12 is opened and the molded sheet l is taken out together with the injection resin 17.
A molded sheet 1 is obtained by separating.
（発明の効果）
本発明の結晶化された合成樹脂シートの成形方法によれ
ば、以上のように加熱された合成樹脂又はゴム材を用い
て加熱しながら加圧成形するので、結晶化された合成樹
脂シートの結晶化を守る適温で加熱しながら成形し、成
形型に密着させて成形した後冷却するため、加熱温度を
必要最小限に低くできて収縮が発生し難く、角が正確に
成形されて寸法精度の良い成形が可能となり、印刷ずれ
も生じず、反りや変形も生じない成形が可能となるとい
う大なる効果を発揮する。(Effects of the Invention) According to the method for molding a crystallized synthetic resin sheet of the present invention, pressure molding is performed while heating using the heated synthetic resin or rubber material as described above. The synthetic resin sheet is molded while being heated at an appropriate temperature to protect it from crystallization, molded in close contact with the mold, and then cooled, so the heating temperature can be lowered to the minimum necessary to prevent shrinkage and form corners accurately. As a result, it is possible to perform molding with good dimensional accuracy, and it is possible to perform molding without printing misalignment, warping, or deformation, which is a great effect.
第１図（ａ）〜（ｄｌは本発明の一実施例のシート成形
工程を示す断面図、第２図は成形すべきシートの積層構
成例を示す断面図、第３図（ａ）、（ｂ）は本発明の別
の実施例のシート成形工程を示す断面図、第４図は結晶
化された合成樹脂シートの各力１１熱温度における伸び
率と引張強さを示ずグラフ、第５図は同各加熱温度にお
ける加熱時間と加熱収縮率を示すグラフ、第６図は従来
の成形工程を示す断面図である。
結晶化された合成樹脂シー
成形型
押え枠
力Ｈ熱成形用樹脂
印刷層
糊層
保護シート
・保護シート
可動側型板
固定側型板
射出樹脂。
トFIGS. 1(a) to (dl are sectional views showing the sheet forming process of an embodiment of the present invention, FIG. 2 is a sectional view showing an example of the laminated structure of the sheet to be formed, and FIGS. b) is a sectional view showing the sheet forming process of another embodiment of the present invention; FIG. 4 is a graph showing the elongation rate and tensile strength at each force 11 thermal temperature of the crystallized synthetic resin sheet; The figure is a graph showing the heating time and heating shrinkage rate at each heating temperature, and Figure 6 is a cross-sectional view showing the conventional molding process.Crystallized synthetic resin sheet mold presser frame force H thermoforming resin printing Layer glue layer protective sheet/protective sheet Movable side mold plate Fixed side mold plate Injection resin.
Claims (7)
せ、その上面より加熱された合成樹脂又はゴム材を押圧
して加熱加圧した後冷却することを特徴とする合成樹脂
シートの成形方法。(1) Molding of a synthetic resin sheet characterized by placing the crystallized synthetic resin sheet on a mold, pressing heated synthetic resin or rubber material from the upper surface of the mold, heating and pressurizing it, and then cooling it. Method.
１０ｋｇｆ／ｃｍ＾２以上の圧力で押圧することを特徴
とする請求項１記載の結晶化された合成樹脂シートの成
形方法。(2) Heating the synthetic resin for heating and pressing to 70 to 220°C,
2. The method for molding a crystallized synthetic resin sheet according to claim 1, wherein the pressing is carried out at a pressure of 10 kgf/cm^2 or more.
ることを特徴とする請求項１又は２記載の合成樹脂シー
トの成形方法。(3) The method for molding a synthetic resin sheet according to claim 1 or 2, characterized in that after molding, the synthetic resin for heating and pressing is separated and reused.
た後、加熱加圧用合成樹脂を押圧することを特徴とする
請求項１、２又は３記載の合成樹脂シートの成形方法。(4) The method for molding a synthetic resin sheet according to claim 1, 2 or 3, wherein the heated and pressurized synthetic resin is pressed after the portion that is not to be molded is held in close contact with the mold using a presser frame.
護シートを貼着して成形することを特徴とする請求項１
、２、３又は４記載の結晶化された合成樹脂シートの成
形方法。(5) Claim 1 characterized in that the crystallized synthetic resin sheet is molded by pasting a protective sheet on one or both sides.
The method for molding a crystallized synthetic resin sheet according to , 2, 3 or 4.
トと結合されていることを特徴とする請求項１、２、３
、４又は５記載の結晶化された合成樹脂シートの成形方
法。(6) Claims 1, 2, and 3, characterized in that the crystallized synthetic resin sheet is combined with another synthetic resin sheet.
The method for molding a crystallized synthetic resin sheet according to , 4 or 5.
けてあることを特徴とする請求項１、２、３、４、５又
は６記載の結晶化された合成樹脂シートの成形方法。(7) The method for molding a crystallized synthetic resin sheet according to claim 1, 2, 3, 4, 5, or 6, characterized in that the crystallized synthetic resin sheet is provided with a printing layer or a glue layer. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5137689A JPH02229026A (en) | 1989-03-02 | 1989-03-02 | Molding method of crystallized synthetic resin sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5137689A JPH02229026A (en) | 1989-03-02 | 1989-03-02 | Molding method of crystallized synthetic resin sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02229026A true JPH02229026A (en) | 1990-09-11 |
Family
ID=12885232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5137689A Pending JPH02229026A (en) | 1989-03-02 | 1989-03-02 | Molding method of crystallized synthetic resin sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02229026A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09155964A (en) * | 1995-12-05 | 1997-06-17 | Nanba Press Kogyo Kk | Integral molding method employing silicone rubber |
-
1989
- 1989-03-02 JP JP5137689A patent/JPH02229026A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09155964A (en) * | 1995-12-05 | 1997-06-17 | Nanba Press Kogyo Kk | Integral molding method employing silicone rubber |
| US6004491A (en) * | 1995-12-05 | 1999-12-21 | Namba Press Works Co., Ltd. | Method of integrated molding by use of silicone rubber |
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