JP2000202901A - Method for molding thermoplastic resin molding - Google Patents
Method for molding thermoplastic resin moldingInfo
- Publication number
- JP2000202901A JP2000202901A JP655999A JP655999A JP2000202901A JP 2000202901 A JP2000202901 A JP 2000202901A JP 655999 A JP655999 A JP 655999A JP 655999 A JP655999 A JP 655999A JP 2000202901 A JP2000202901 A JP 2000202901A
- Authority
- JP
- Japan
- Prior art keywords
- molding
- thermoplastic resin
- resin sheet
- mold
- molded article
- 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
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、包装容器材等の熱
可塑性樹脂シートより熱成形される成形体の成形方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for molding a molded article thermoformed from a thermoplastic resin sheet such as a packaging container material.
【0002】[0002]
【従来の技術】包装容器材等の薄肉成形品は、熱可塑性
樹脂シートを加熱して軟化させ、型を用いて成形する熱
成形によって製造されることが多い。中でも、真空成
形、圧空成形が多く用いられる。しかし、これらは型で
の成形時に、型と対向する位置に設けられた熱板上で成
形可能な温度に加熱されるため、圧空成形時の空気吹き
出し用小孔などの熱板の表面形状がシート表面に転写さ
れたり、さらに真空成形の場合、シートを吸い付けるた
めに型に設けられた小孔の形状が転写され、特に透明な
成形品の場合などは外観上大きな問題となっていた。2. Description of the Related Art Thin-walled molded articles such as packaging container materials are often produced by thermoforming in which a thermoplastic resin sheet is heated and softened and molded using a mold. Above all, vacuum forming and pressure forming are often used. However, since these are heated to a temperature at which they can be molded on a hot plate provided at a position facing the mold during molding with a mold, the surface shape of the hot plate such as small holes for air blowing during compressed air molding is reduced. In the case of transfer onto the sheet surface or in the case of vacuum forming, the shape of the small holes provided in the mold for sucking the sheet is transferred, and this has been a major problem in appearance, especially in the case of a transparent molded product.
【0003】また、シートの厚みが大きいと加熱時間が
長くなるが、熱成形においては、型と対向する位置に設
けられた熱板上で熱可塑性樹脂シートを加熱するため、
全体的な、成形速度が遅くなる。[0003] In addition, when the thickness of the sheet is large, the heating time is prolonged. However, in thermoforming, a thermoplastic resin sheet is heated on a hot plate provided at a position opposed to a mold.
Overall, molding speed slows.
【0004】さらに、直接熱板に接触して加熱されると
収縮応力が大きくなり、耐衝撃性が低いという問題点も
ある。Further, there is another problem that when heated by directly contacting the hot plate, the shrinkage stress increases and the impact resistance is low.
【0005】[0005]
【発明が解決しようとする課題】本発明は、熱成形にお
いて、成形時に熱板や型の表面形状が転写されず、成形
速度の速い成形方法を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a molding method in which the surface shape of a hot plate or a mold is not transferred during molding and the molding speed is high.
【0006】[0006]
【課題を解決するための手段】本発明の請求項1に係る
熱可塑性樹脂成形体の成形方法は、熱可塑性樹脂シート
より熱成形される成形体の、加熱手段および、型による
成形手段からなる成形方法において、前記加熱手段が前
記熱可塑性樹脂シートに非接触であって、型による成形
手段とは分離されている。According to a first aspect of the present invention, there is provided a method for molding a thermoplastic resin molded article, comprising a heating means and a molding means for a molded article thermoformed from a thermoplastic resin sheet. In the molding method, the heating unit is not in contact with the thermoplastic resin sheet, and is separated from the molding unit using a mold.
【0007】熱可塑性樹脂シートに非接触な加熱手段を
用いることにより、熱板の表面形状がシート表面に転写
されたり、真空成形の場合、型に設けられた小孔の形状
が転写されることがなくなり、外観上の問題点が解消さ
れる。さらに加熱手段が型による成形手段とは分離され
ていることにより、型による成形時に、並行して加熱処
理が可能になるので、成形速度が速くなる。[0007] By using a non-contact heating means for the thermoplastic resin sheet, the surface shape of the hot plate is transferred to the sheet surface, or in the case of vacuum forming, the shape of the small holes provided in the mold is transferred. Is eliminated, and problems in appearance are eliminated. Further, since the heating means is separated from the molding means by the mold, the heat treatment can be performed in parallel with the molding by the mold, so that the molding speed is increased.
【0008】本発明の請求項2に係る熱可塑性樹脂成形
体は、請求項1記載の熱可塑性樹脂成形体の成形方法に
より、成形されてなる。A thermoplastic resin molded article according to a second aspect of the present invention is formed by the method for molding a thermoplastic resin molded article according to the first aspect.
【0009】請求項1記載の成形方法により成形される
ことにより、外観が美しく、また耐衝撃性の改善された
成形体を得ることができる。[0009] By molding by the molding method of the first aspect, it is possible to obtain a molded article having a beautiful appearance and improved impact resistance.
【0010】本発明の熱可塑性樹脂成形体は、請求項3
に記載するように、好ましくは、通常収縮応力(JIS
に準拠して測定)が1.5kg/cm2〜4.0kg/
cm2であるのが良い。The thermoplastic resin molding of the present invention is characterized in that
As described in the above, preferably, the normal shrinkage stress (JIS
1.5 kg / cm 2 to 4.0 kg /
cm 2 is good.
【0011】通常収縮応力が、上記範囲であることによ
り、外観性、耐衝撃性がさらに改善される。Usually, when the shrinkage stress is in the above range, appearance and impact resistance are further improved.
【0012】本発明の熱可塑性樹脂成形体の成形方法
は、外観上の問題点が解消されるので、請求項4に記載
するように、二軸延伸透明ポリスチレン系樹脂シートか
ら成形されてなる熱可塑性樹脂成形体に対する効果が大
きい。According to the method of molding a thermoplastic resin molded article of the present invention, the problem of appearance is solved. The effect on the plastic resin molding is great.
【0013】さらに、熱可塑性樹脂成形体が、請求項5
に記載するように、ゴム変性ポリスチレン系樹脂シート
から成形されてなる熱可塑性樹脂成形体であると、耐衝
撃性が更に改善される。[0013] Further, the thermoplastic resin molded article is preferably a thermoplastic resin molded article.
As described in (1), when the thermoplastic resin molded article is formed from a rubber-modified polystyrene resin sheet, the impact resistance is further improved.
【0014】本発明の請求項6に係る熱可塑性樹脂成形
体の成形装置は、熱可塑性樹脂シートより成形体を熱成
形する成形装置において、型による成形手段の上流側に
前記熱可塑性樹脂シートを加熱する、熱可塑性樹脂シー
トに非接触な加熱手段をてなる。According to a sixth aspect of the present invention, there is provided a molding apparatus for thermoforming a molded article from a thermoplastic resin sheet, wherein the thermoplastic resin sheet is provided upstream of molding means using a mold. Heating means is provided for heating the thermoplastic resin sheet without contacting it.
【0015】本発明の装置を用いて熱成形することによ
り、熱板の表面形状がシート表面に転写されたり、真空
成形の場合、型に設けられた小孔の形状が転写されるこ
とがなくなり、外観上の問題点が解消され、さらに、型
による成形時に、並行して加熱処理が可能になるので、
成形速度が速くなる。By thermoforming using the apparatus of the present invention, the surface shape of the hot plate is not transferred to the sheet surface, and in the case of vacuum forming, the shape of the small holes provided in the mold is not transferred. In addition, the problem of appearance is solved, and furthermore, at the time of molding with a mold, heat treatment can be performed in parallel,
The molding speed increases.
【0016】[0016]
【発明の実施の形態】以下に図面を用いて本発明を更に
詳細に説明する。図1〜3に本発明の成形方法の実施形
態の一例を示すが、本発明はこれに限定されるものでは
ない。図1は、本発明の成形方法により熱可塑性樹脂成
形体の、加熱手段および、型による成形手段からなる成
形装置の構成を示す略断面図、図2は成形工程の説明
図、図3は本発明の成形方法により成形された成形体
(包装容器材の蓋体)の一例の斜視図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the drawings. 1 to 3 show an example of an embodiment of the molding method of the present invention, but the present invention is not limited to this. FIG. 1 is a schematic cross-sectional view showing the configuration of a molding apparatus comprising a heating means and a molding means using a mold for a thermoplastic resin molded article by the molding method of the present invention, FIG. 2 is an explanatory view of a molding process, and FIG. It is a perspective view of an example of the molded object (lid of the packaging container material) formed by the molding method of the present invention.
【0017】図1に示す装置1は、型による成形手段で
ある真空成形装置2と、その熱可塑性樹脂シート搬送方
向の上流側に設置された加熱装置3(加熱手段)と、熱
可塑性樹脂シート搬送装置4とから主として構成され
る。The apparatus 1 shown in FIG. 1 includes a vacuum forming apparatus 2 which is a forming means using a mold, a heating apparatus 3 (heating means) installed on the upstream side in the thermoplastic resin sheet conveying direction, and a thermoplastic resin sheet. It is mainly composed of the transport device 4.
【0018】加熱装置3は、熱可塑性樹脂シート搬送装
置4を挟んで対向する1対のヒータ5,5を有し、熱可
塑性樹脂シートに非接触である。該加熱装置3は、熱成
形前に、前記熱可塑性樹脂シートを型による成形に先立
って加熱する。The heating device 3 has a pair of heaters 5 and 5 facing each other with the thermoplastic resin sheet conveying device 4 interposed therebetween, and is not in contact with the thermoplastic resin sheet. The heating device 3 heats the thermoplastic resin sheet prior to thermoforming, prior to molding with a mold.
【0019】真空成形装置2は、搬送されてきた加熱さ
れた熱可塑性樹脂シートを吸い付けて成形する金型8を
有する。金型8は、空気を吸引し、熱可塑性樹脂シート
9と金型8との間の空隙を陰圧にして、該熱可塑性樹脂
シートを吸い付けるための複数の小孔10を有し、該小
孔10は図示しない吸引用のポンプに接続されている。The vacuum forming apparatus 2 has a mold 8 for sucking and molding the conveyed heated thermoplastic resin sheet. The mold 8 has a plurality of small holes 10 for sucking air, making the gap between the thermoplastic resin sheet 9 and the mold 8 a negative pressure, and sucking the thermoplastic resin sheet. The small hole 10 is connected to a suction pump (not shown).
【0020】熱可塑性樹脂シート搬送装置4は、熱可塑
性樹脂シート9を、水平方向へ搬送し、エンドレスベル
ト、ロールからなる。The thermoplastic resin sheet transporting device 4 transports the thermoplastic resin sheet 9 in the horizontal direction, and comprises an endless belt and a roll.
【0021】本発明の成形方法による真空成形は、次の
ように行われる(図2)。搬送装置4により搬送されて
きた透明ポリスチレン系樹脂シート9(熱可塑性樹脂シ
ート)は、加熱装置3内でヒータ5により、成形可能な
温度に加熱される[図2(a)]。その後、さらに搬送
装置4により、真空成形装置2内に搬送され[図2
(b)]、金型8の小孔10より成形装置内の空気を吸
引して、透明ポリスチレン系樹脂シート9を金型8に吸
い付け[図2(c))]、さらに吸引して成形を行う
[図2(d)]。小孔10より空気を吹き込むことによ
り、成形体11は金型8より分離されて、成形は完了す
る。The vacuum forming by the forming method of the present invention is performed as follows (FIG. 2). The transparent polystyrene resin sheet 9 (thermoplastic resin sheet) conveyed by the conveying device 4 is heated to a moldable temperature by the heater 5 in the heating device 3 (FIG. 2A). After that, it is further transported into the vacuum forming device 2 by the transport device 4 [FIG.
(B)], the air in the molding apparatus is sucked through the small holes 10 of the mold 8, and the transparent polystyrene resin sheet 9 is sucked into the mold 8 (FIG. 2 (c)). [FIG. 2 (d)]. By blowing air from the small holes 10, the molded body 11 is separated from the mold 8, and the molding is completed.
【0022】本発明において、加熱手段は、型による成
形手段とは分離され、熱可塑性樹脂シートに非接触な状
態で、成形可能な温度まで加熱することが可能であれ
ば、その加熱方法、装置構成は特に限定されない。In the present invention, if the heating means can be heated to a moldable temperature in a state in which the heating means is separated from the molding means by a mold and is not in contact with the thermoplastic resin sheet, the heating method and apparatus are provided. The configuration is not particularly limited.
【0023】本発明において、型による成形手段は、通
常公知の真空成形、圧空成形等の方法における成形手段
を用いることができ、加熱手段を有しない以外の、その
成形方法、装置構成は特に限定されない。In the present invention, as a molding means using a mold, a molding means in a commonly known method such as vacuum molding and air pressure molding can be used, and the molding method and apparatus configuration are not particularly limited except that there is no heating means. Not done.
【0024】本発明の成形方法により成形された熱可塑
性樹脂成形体は、外観性、耐衝撃性に優れるが、好まし
くは通常収縮応力(JISに準拠して測定)が1.5k
g/cm2〜4.0kg/cm2であるよう成形すること
により、外観性、耐衝撃性がさらに改善される。The thermoplastic resin molded article molded by the molding method of the present invention is excellent in appearance and impact resistance, but preferably has a normal shrinkage stress (measured in accordance with JIS) of 1.5 k.
By molding so as to be g / cm 2 to 4.0 kg / cm 2 , appearance and impact resistance are further improved.
【0025】本発明の成形方法の対象となる熱可塑性樹
脂シートは、特に限定されず、通常一般に熱成形に用い
られる、ポリスチレン系樹脂、ポリプロピレン系樹脂、
ポリエチレン系樹脂等が使用できるが、二軸延伸透明ポ
リスチレン系樹脂シートにおいては、本発明の作用が特
に効果的に現れる。The thermoplastic resin sheet to be subjected to the molding method of the present invention is not particularly limited, and polystyrene resin, polypropylene resin, and the like generally used for thermoforming.
Although a polyethylene-based resin or the like can be used, the effect of the present invention appears particularly effectively in a biaxially stretched transparent polystyrene-based resin sheet.
【0026】また、二軸延伸透明ポリスチレン系樹脂シ
ートが、ゴム変性ポリスチレン系樹脂シートであると、
耐衝撃性が更に改善される。ゴム変性ポリスチレン樹脂
シートは、樹脂全体に対し、0.5〜20重量%程度で
あるのが良い。Further, when the biaxially stretched transparent polystyrene resin sheet is a rubber-modified polystyrene resin sheet,
The impact resistance is further improved. The content of the rubber-modified polystyrene resin sheet is preferably about 0.5 to 20% by weight based on the whole resin.
【0027】実施例1 図1に示す構成の成形装置を用い、二軸延伸透明ポリス
チレン樹脂シート(商品名:B−OPS、製造元:ダイ
セル化学工業(株)製)より、概ね100mm×150m
m×20mmの直方体形状の包装容器材蓋体を成形し
た。加熱条件は、120℃、15sec、真空成形条件
は、金型温度60℃、真空度100TDrrで行った。
その結果、加熱時間は真空成形と並行して行えるため、
加熱時間を除いた真空成形に要する時間は、7.5se
cであって、外観上も真空穴の形状等の転写がないもの
が得られた。また、収縮応力は、2.0kg/cm2で
あった。Example 1 A biaxially stretched transparent polystyrene resin sheet (trade name: B-OPS, manufactured by Daicel Chemical Industries, Ltd.) was roughly 100 mm × 150 m by using a molding apparatus having the structure shown in FIG.
A rectangular parallelepiped packaging container material lid of mx 20 mm was formed. The heating conditions were 120 ° C. and 15 seconds, and the vacuum forming conditions were a mold temperature of 60 ° C. and a degree of vacuum of 100 TDrr.
As a result, the heating time can be performed in parallel with the vacuum forming,
The time required for vacuum forming excluding the heating time is 7.5 sec.
c, which had no transfer of the shape of the vacuum hole or the like in appearance. Further, the shrinkage stress was 2.0 kg / cm 2 .
【0028】比較例1 図5に示す構成の成形装置を用い、実施例1と同様の二
軸延伸透明ポリスチレン樹脂シートより、実施例1と同
様の形状の包装容器材蓋体を成形した。真空成形条件
は、加熱条件を温度120℃の熱板で、加熱時間を9s
ecにした以外は、実施例1と同様に行った。その結
果、真空成形に要する時間が、実施例1に比べて長くな
り、外観上も、実施例1に比べて劣っていた。また、収
縮応力は、実施例1と同様に測定したところ、5.0k
g/cm2であった。Comparative Example 1 Using a molding apparatus having the structure shown in FIG. 5, a packaging container material lid having the same shape as in Example 1 was molded from the same biaxially stretched transparent polystyrene resin sheet as in Example 1. The vacuum forming conditions were as follows: the heating condition was a hot plate at a temperature of 120 ° C., and the heating time was 9 s.
ec was performed in the same manner as in Example 1. As a result, the time required for vacuum forming was longer than in Example 1, and the appearance was inferior to Example 1. The shrinkage stress was measured in the same manner as in Example 1, and was found to be 5.0 k.
g / cm 2 .
【0029】[0029]
【発明の効果】本発明の熱可塑性樹脂成形体の成形方法
は、熱可塑性樹脂シートに非接触な加熱手段を用いるこ
とにより、得られた成形体が、熱板の表面形状がシート
表面に転写されたり、真空成形の場合、型に設けられた
小孔の形状が転写されることがなくなり、外観上の問題
点が解消される。さらに加熱手段が型による成形手段と
は分離されていることにより、型による成形時に、並行
して加熱処理が可能になるので、成形速度が速くなる。According to the method for molding a thermoplastic resin molded article of the present invention, the obtained molded article is transferred to the surface of the hot plate by using a heating means which is not in contact with the thermoplastic resin sheet. In the case of vacuum molding or vacuum molding, the shape of the small hole provided in the mold is not transferred, and the problem in appearance is solved. Further, since the heating means is separated from the molding means by the mold, the heat treatment can be performed in parallel with the molding by the mold, so that the molding speed is increased.
【0030】本発明の成形方法により得られた熱可塑性
樹脂成形体は、通常収縮応力(に準拠して測定)が1.
5kg/cm2〜4.0kg/cm2であることにより、
外観性、耐衝撃性がさらに改善される。The molded article of the thermoplastic resin obtained by the molding method of the present invention usually has a shrinkage stress (measured according to) of 1.
By a 5kg / cm 2 ~4.0kg / cm 2 ,
Appearance and impact resistance are further improved.
【0031】本発明の熱可塑性樹脂成形体の成形方法
は、外観上の問題点が解消されるので、二軸延伸透明ポ
リスチレン系樹脂シートから成形されてなる熱可塑性樹
脂成形体に対する効果が大きい。The method of molding a thermoplastic resin molded article of the present invention eliminates problems in appearance, and has a great effect on a thermoplastic resin molded article molded from a biaxially stretched transparent polystyrene resin sheet.
【0032】さらに、熱可塑性樹脂成形体が、ゴム変性
ポリスチレン系樹脂シートから成形されてなる熱可塑性
樹脂成形体であると、耐衝撃性が更に改善される。Further, when the thermoplastic resin molded article is a thermoplastic resin molded article molded from a rubber-modified polystyrene resin sheet, the impact resistance is further improved.
【図1】 図1は、本発明の成形方法により熱可塑性樹
脂成形体の熱成形を行う成形装置の構成の一例を示す略
断面図である。FIG. 1 is a schematic cross-sectional view showing an example of a configuration of a molding apparatus for performing thermoforming of a thermoplastic resin molded article by a molding method of the present invention.
【図2】 図2(a)〜(d)は本発明の成形方法によ
る成形工程の説明図である。FIGS. 2 (a) to 2 (d) are explanatory views of a molding step according to the molding method of the present invention.
【図3】 本発明の成形方法により成形された成形体
(包装容器材の蓋体)一例の斜視図である。FIG. 3 is a perspective view of an example of a molded article (a lid of a packaging container material) molded by the molding method of the present invention.
【図4】 図1は、本発明の成形方法により熱可塑性樹
脂成形体の熱成形を行う成形装置の構成の他の例を示す
略断面図である。FIG. 1 is a schematic cross-sectional view showing another example of the configuration of a molding apparatus for thermoforming a thermoplastic resin molded article by the molding method of the present invention.
【図5】 従来の成形方法により熱可塑性樹脂成形体の
熱成形を行う成形装置の構成を示す略断面図である。FIG. 5 is a schematic cross-sectional view showing a configuration of a molding apparatus for performing thermoforming of a thermoplastic resin molded article by a conventional molding method.
1 本発明の成形装置 2 真空成形装置 2‘ 圧空成形装置 3 加熱装置 4 熱可塑性樹脂搬送装置 5 ヒータ 8 成形型 9 シート(カットシートでもロールシートでも良い
が、今回の物は、ロールシート) 10 小孔 11 成形体 12 熱板DESCRIPTION OF SYMBOLS 1 Forming apparatus of this invention 2 Vacuum forming apparatus 2 'Compressed air forming apparatus 3 Heating apparatus 4 Thermoplastic resin conveying apparatus 5 Heater 8 Mold 9 Sheet (Either a cut sheet or a roll sheet, but a roll sheet in this case) 10 Small hole 11 Molded body 12 Hot plate
フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) C08L 25:04 Fターム(参考) 4F071 AA12X AA22 AA22X AA77 AF54Y AG28 AH04 BB08 BC01 4F201 AA13 AC03 AH56 AH58 AR20 BA04 BC01 BC02 BC12 BD07 BN01 BN50 4F208 AA13 AC03 AH56 AH58 AR20 MA01 MA02 MB01 MC01 MG01 MH06 MH10 MH30 Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat II (Reference) C08L 25:04 F term (Reference) 4F071 AA12X AA22 AA22X AA77 AF54Y AG28 AH04 BB08 BC01 4F201 AA13 AC03 AH56 AH58 AR20 BA04 BC01 BC02 BC12 BD07 BN01 BN50 4F208 AA13 AC03 AH56 AH58 AR20 MA01 MA02 MB01 MC01 MG01 MH06 MH10 MH30
Claims (6)
形体の、加熱手段および、型による成形手段からなる成
形方法において、前記加熱手段が前記熱可塑性樹脂シー
トに非接触であって、型による成形手段とは分離されて
いることを特徴とする熱可塑性樹脂成形体の成形方法。1. A molding method for a molded article thermoformed from a thermoplastic resin sheet, comprising a heating means and a molding means using a mold, wherein the heating means is not in contact with the thermoplastic resin sheet, and A method for molding a thermoplastic resin article, which is separated from a molding means.
方法により、成形されてなることを特徴とする熱可塑性
樹脂成形体。2. A thermoplastic resin molded article formed by the method for molding a thermoplastic resin molded article according to claim 1.
1.5kg/cm2〜4.0kg/cm2であることを特
徴とする請求項2記載の熱可塑性樹脂成形体。3. The thermoplastic resin molded article according to claim 2 , wherein the shrinkage stress (measured in accordance with JIS) is generally 1.5 kg / cm 2 to 4.0 kg / cm 2 .
から成形されてなることを特徴とする請求項2または3
記載の熱可塑性樹脂成形体。4. A molded article made of a biaxially stretched transparent polystyrene resin sheet.
The thermoplastic resin molded article according to the above.
がゴム変性ポリスチレン系樹脂シートであることを特徴
とする請求項4記載の熱可塑性樹脂成形体。5. The thermoplastic resin molded article according to claim 4, wherein the biaxially stretched transparent polystyrene resin sheet is a rubber-modified polystyrene resin sheet.
する成形装置において、型による成形手段の上流側に前
記熱可塑性樹脂シートを加熱する、熱可塑性樹脂シート
に非接触な加熱手段を設けることを特徴とする熱可塑性
樹脂成形体の成形装置。6. A molding apparatus for thermoforming a molded article from a thermoplastic resin sheet, wherein a heating means for heating the thermoplastic resin sheet upstream of a molding means using a mold, wherein the heating means is not in contact with the thermoplastic resin sheet, is provided. A molding apparatus for a thermoplastic resin molded article, characterized in that:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP655999A JP2000202901A (en) | 1999-01-13 | 1999-01-13 | Method for molding thermoplastic resin molding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP655999A JP2000202901A (en) | 1999-01-13 | 1999-01-13 | Method for molding thermoplastic resin molding |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2000202901A true JP2000202901A (en) | 2000-07-25 |
Family
ID=11641700
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP655999A Pending JP2000202901A (en) | 1999-01-13 | 1999-01-13 | Method for molding thermoplastic resin molding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2000202901A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001051270A1 (en) * | 2000-01-13 | 2001-07-19 | Mogami Denki Corporation | Method and device for producing open type polyimide moldings, and base material for reflective bodies in lighting equipment |
EP1312967A1 (en) * | 2001-11-15 | 2003-05-21 | Du Pont-Toray Company, Ltd. | Lighting reflection apparatus |
-
1999
- 1999-01-13 JP JP655999A patent/JP2000202901A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001051270A1 (en) * | 2000-01-13 | 2001-07-19 | Mogami Denki Corporation | Method and device for producing open type polyimide moldings, and base material for reflective bodies in lighting equipment |
US6835348B2 (en) * | 2000-01-13 | 2004-12-28 | Mogami Denki Corporation | Method and device for producing open type polymide moldings, and base material for reflective bodies in lighting equipment |
EP1312967A1 (en) * | 2001-11-15 | 2003-05-21 | Du Pont-Toray Company, Ltd. | Lighting reflection apparatus |
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