JP3777887B2 - Manufacturing method of resin molded products - Google Patents
Manufacturing method of resin molded products Download PDFInfo
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- JP3777887B2 JP3777887B2 JP21135099A JP21135099A JP3777887B2 JP 3777887 B2 JP3777887 B2 JP 3777887B2 JP 21135099 A JP21135099 A JP 21135099A JP 21135099 A JP21135099 A JP 21135099A JP 3777887 B2 JP3777887 B2 JP 3777887B2
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- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【０００１】
【発明の属する技術分野】
この出願の発明は、樹脂成形品の製造方法に関するものである。さらに詳しくは、この出願の発明は、硬化温度の異なる複数種類の樹脂成形品を容易に製造することができ、多種類のカウンターを製造する必要がある住宅等の樹脂カウンターとして有用な樹脂成形品の製造方法に関するものである。
【０００２】
【従来の技術】
従来、樹脂カウンター等の樹脂成形品を製造する場合には、図４に例示するように、複数の金型（Ａ）に、熱硬化性樹脂成形材料を充填すると共に温水を供給し、注型成形法、圧縮成形法等にて成形して樹脂成形品を製造している。
他方、工場においては、図４に例示するように、高温温水系の高温温水供給管（Ｂ）、中温温水系の中温温水供給管（Ｃ）、低温温水系の低温温水供給管（Ｄ）等の複数の温水供給経路があり、用途に応じて、切換弁（Ｅ）によって上記複数の温水供給経路のいずれかを切り換えて選択的に使用している。
【０００３】
例えば、高温温水供給管（Ｂ）は、金型（Ａ）にて熱硬化性樹脂成形材料を成形、硬化させるために、高温温水を供給する時に使用し、また、中温温水供給管（Ｃ）は、熱硬化性樹脂成形材料を金型（Ａ）に注入、充填するために、中温温水を供給する時に使用し、また、低温温水供給管（Ｄ）は、熱硬化性樹脂成形材料を成形、硬化させた後、金型（Ａ）を冷却するために、低温温水を供給する時に使用している。
【０００４】
上記のように、用途に応じて、切換弁（Ｅ）によって切り換えて選択された温水は、配管（Ｆ）を介して各金型（Ａ）に供給され、上記用途の加熱媒体または冷却媒体として利用されている。
【０００５】
【発明が解決しようとする課題】
しかしながら、熱硬化性樹脂成形材料は、熱硬化性樹脂の種類によって、それぞれ最適な硬化温度が存在し、この硬化温度と異なった温度で成形した場合には、未硬化になったり、硬化が早過ぎたりして、得られた樹脂成形品に残留ひずみや反りが発生することがあった。
【０００６】
従って、図４に例示するように、複数の金型（Ａ）に、熱硬化性樹脂成形材料を充填すると共に高温温水供給管（Ｂ）より高温温水を供給して成形する場合に、一種類の熱硬化性樹脂成形材料を複数の金型（Ａ）に供給して成形して同一種類の複数の樹脂成形品を製造する際には、高温温水供給管（Ｂ）の高温温水温度を上記一種類の熱硬化性樹脂成形材料の硬化温度に合わせておけば良く、問題は生じない。
【０００７】
ところが、複数の金型（Ａ）に、それぞれ異なった複数種類の熱硬化性樹脂成形材料を充填すると共に高温温水供給管（Ｂ）より高温温水を供給して成形する場合には、高温温水供給管（Ｂ）より供給する高温温水温度を、それぞれ、複数種類の熱硬化性樹脂成形材料の硬化温度に合わせて供給することができないため、問題が生じ、実用に供し得ないという問題があった。
【０００８】
この出願の発明は、以上の通りの事情に鑑みてなされたものであり、上記の問題点を解消し、硬化温度の異なる複数種類の熱硬化性樹脂成形材料をそれぞれの硬化温度に合わせて成形し、複数種類の樹脂成形品を容易に製造することができる樹脂成形品の製造方法を提供することを目的としている。
【０００９】
【課題を解決するための手段】
この出願の発明は、上記の課題を解決するためになされたものであって、第１の発明は、複数の金型に、硬化温度の異なる複数種類の熱硬化性樹脂成形材料を充填すると共に温水を供給して成形して、複数種類の樹脂成形品を製造するに際して、温水の温度を、硬化温度の異なる複数種類の熱硬化性樹脂成形材料の硬化温度のうち、最高硬化温度に設定すると共に、各金型に温水を供給する配管に流量調整弁を設け、熱硬化性樹脂成形材料の硬化温度に応じて各金型への温水供給量を調整することによって各金型の温度上昇速度を調整して成形し、複数種類の樹脂成形品を製造することを特徴とする樹脂成形品の製造方法を提供する。
【００１０】
また、第２の発明は、複数の金型に、硬化温度の異なる複数種類の熱硬化性樹脂成形材料を充填すると共に温水を供給して成形し、複数種類の樹脂成形品を製造するに際して、温水の温度を、硬化温度の異なる複数種類の熱硬化性樹脂成形材料の硬化温度のうち、最高硬化温度に設定した高温温水と、高温温水より低温度に設定した中温温水または／および低温温水とを、供給・混合する供給・混合手段を、各金型に温水を供給する配管に設け、熱硬化性樹脂成形材料の硬化温度に応じて高温温水と中温温水または／および低温温水の混合割合を調整して混合、供給することによって各金型の温度上昇速度を調整して成形し、複数種類の樹脂成形品を製造することを特徴とする樹脂成形品の製造方法を、第３の発明は、各金型に温水を供給する配管に、高温温水供給管、中温温水供給管および低温温水供給管の３系列の温水供給管を混合弁を介して、連結、連通してなる前記の樹脂成形品の製造方法を提供する。
【００１１】
【発明の実施の形態】
この出願の発明は、上記の通りの特徴をもつものであるが、以下、その実施の形態について説明する。
図１は、この出願の第１の発明における金型温度上昇曲線の一実施形態を例示した図であり、図２は同発明における金型・樹脂温度上昇曲線の一実施形態を例示した図である。
【００１２】
この出願の第１の発明は、例えば、前述のように、複数の金型に、硬化温度の異なる複数種類の熱硬化性樹脂成形材料を充填すると共に温水を供給して成形し、複数種類の樹脂成形品を製造するに際して、温水の温度を、硬化温度の異なる複数種類の熱硬化性樹脂成形材料の硬化温度のうち、最高硬化温度に設定すると共に、各金型に温水を供給する配管に流量調整弁を設け、以下、図１および図２にて説明するように、各金型に充填した熱硬化性樹脂成形材料の硬化温度に応じて各金型への温水供給量を調整することによって各金型の温度上昇速度を調整して最適な硬化温度にて成形し、複数種類の樹脂成形品を製造することを特徴とするものである。
【００１３】
すなわち、上記流量調整弁を絞って金型への温水供給量を減少していくと、図１矢印にて示すように、金型の昇温速度はゆるやかになり、図１（１）〜（３）に例示するような、金型温度上昇曲線にて各金型の温度上昇速度を調整することができる。
次いで、熱硬化性樹脂成形材料の硬化温度に応じて金型の温度上昇速度を調整する状況を説明する。
【００１４】
すなわち、上記図１と同様にして、流量調整弁を調整して、図２（４）〜（６）に例示するような、金型温度上昇曲線にて各金型の温度上昇速度を調整し、例えば、熱硬化性樹脂成形材料の硬化温度（またはガラス転移温度）が比較的低い熱硬化性樹脂成形材料を充填して金型に温水を供給する場合には、図２（５）に例示するような、金型温度上昇曲線にて金型の温度上昇速度を調整して温水を供給すると、図２（７）に例示するような、樹脂温度上昇曲線にて熱硬化性樹脂成形材料の温度が上昇し、最適な硬化温度にて成形、硬化させることができる。
【００１５】
上記と同様にして、その他の金型においても、各金型に充填した熱硬化性樹脂成形材料の硬化温度に応じて、前述のように、各金型への温水供給量を調整することによって、図１（１）〜（３）、図２（４）〜（６）、その他に例示するような、金型温度上昇曲線にて各金型の温度上昇速度を調整し、各金型に充填した熱硬化性樹脂成形材料を、それぞれ最適な硬化温度にて成形、硬化させることができる。
【００１６】
以上の通り、この出願の第１の発明においては、複数の金型に供給する温水の温度を、各金型に充填する硬化温度の異なる複数種類の熱硬化性樹脂成形材料の硬化温度のうち、最高硬化温度に設定すると共に、各金型に温水を供給する配管に流量調整弁を設け、熱硬化性樹脂成形材料の硬化温度に応じて各金型への温水供給量を調整することによって各金型の温度上昇速度を調整して成形し、複数種類の樹脂成形品を製造しているので、各金型への種々の温度の温水供給タンク等、新たな設備を増設することなく、各金型に充填した熱硬化性樹脂成形材料に応じた最適な硬化温度にて成形、硬化させて複数種類の樹脂成形品を容易に製造することができる。
【００１７】
図３は、この出願の第２の発明における金型・樹脂温度上昇曲線の一実施形態を例示した図である。
この出願の第２の発明は、例えば、前述のように、複数の金型に、硬化温度の異なる複数種類の熱硬化性樹脂成形材料を充填すると共に温水を供給して成形し、複数種類の樹脂成形品を製造するに際して、温水の温度を、硬化温度の異なる複数種類の熱硬化性樹脂成形材料の硬化温度のうち、最高硬化温度に設定した高温温水と、高温温水より低温度に設定した中温温水または／および低温温水とを、供給・混合する温水供給管および混合弁等の供給・混合手段を、各金型に温水を供給する配管に設け、以下、図３にて説明するように、各金型に充填した熱硬化性樹脂成形材料の硬化温度に応じて混合割合を調整して高温温水と中温温水または／および低温温水とを混合して各金型へ供給することによって各金型の温度上昇速度を調整して最適な硬化温度にて成形し、複数種類の樹脂成形品を製造することを特徴とするものである。
【００１８】
すなわち、高温温水に対して、中温温水または／および低温温水（通常は、中温温水のみで対応できる）の混合量を増大していくと、図３（８）〜（１０）に例示するような、金型温度上昇曲線にて各金型の温度上昇速度を調整することができる。
次いで、熱硬化性樹脂成形材料の硬化温度に応じて金型の温度上昇速度を調整する状況を説明する。
【００１９】
すなわち、上記のように、高温温水に対する中温温水（または／および低温温水）の混合割合を調整して、図３（８）〜（１０）に例示するような、金型温度上昇曲線にて各金型の温度上昇速度を調整し、例えば、熱硬化性樹脂成形材料の硬化温度（またはガラス転移温度）が比較的低い熱硬化性樹脂成形材料を充填した金型に温水を供給する場合には、図３（９）に例示するような、金型温度上昇曲線にて金型の温度上昇速度を調整して温水を供給すると、図３（１１）に例示するような、樹脂温度上昇曲線にて熱硬化性樹脂成形材料の温度が上昇し、最適な硬化温度にて成形、硬化させることができる。
【００２０】
以上の通り、この出願の第２の発明においては、複数の金型に供給する温水の温度を、各金型に充填する硬化温度の異なる複数種類の熱硬化性樹脂成形材料の硬化温度のうち、最高硬化温度に設定した高温温水と、高温温水より低温度に設定した中温温水または／および低温温水とを、供給・混合する供給・混合手段を、各金型に温水を供給する配管に設け、熱硬化性樹脂成形材料の硬化温度に応じて高温温水と中温温水または／および低温温水の混合割合を調整して混合、供給することによって各金型の温度上昇速度を調整して成形し、複数種類の樹脂成形品を製造しているので、前記この出願の第１の発明と同様に、新たな設備を増設することなく、各金型に充填した熱硬化性樹脂成形材料に応じた最適な硬化温度にて成形、硬化させて複数種類の樹脂成形品を容易に製造することができる。
【００２１】
この出願の第３の発明は、上記この出願の第２の発明を実施するための一実施態様を示し、例えば、前述のように、硬化温度の異なる複数種類の熱硬化性樹脂成形材料を充填する各金型に温水を供給する配管に、高温温水供給管、中温温水供給管および低温温水供給管の３系列の温水供給管を配設し、この３系列の温水供給管を混合弁を介して合流させて上記各金型に温水を供給する配管に連結、連通し、上記高温温水供給管より供給される高温温水と、中温温水供給管より供給される中温温水と、低温温水供給管より供給される低温温水とを、混合弁を介して混合割合を調整して混合して各金型へ供給することによって各金型の温度上昇速度を調整して最適な硬化温度にて成形し、複数種類の樹脂成形品を製造することを特徴とするものである。
【００２２】
以上の通り、この出願の第３の発明においては、各金型に温水を供給する配管に、高温温水供給管、中温温水供給管および低温温水供給管を混合弁を介して連結、連通してなるので、前記図４に例示するように、工場において配設されている既存の高温温水系の高温温水供給管（Ｂ）、中温温水系の中温温水供給管（Ｃ）および低温温水系の低温温水供給管（Ｄ）を転用し、かつ、いずれかの温水経路を切り換えて選択的に使用する切換弁（Ｅ）の代りに、混合弁を配設し、この混合弁を介して上記３系列の温水を混合し、この混合された温水を既存の配管（Ｆ）を介して各金型（Ａ）に供給することができ、従って、新たな設備を増設することなく、各金型に充填した熱硬化性樹脂成形材料に応じた最適な硬化温度にて成形、硬化させて複数種類の樹脂成形品を容易に製造することができる。
【００２３】
また、３系列の温水供給管を組み合わせて使用した場合には、３系列の温水の混合割合を調整することにより微妙な温度コントロールを行うことができ、種々の硬化温度にきめ細かく対応することができる。
なお、この出願の発明は、樹脂カウンターのように、色、柄等を変更するために熱硬化性樹脂成形材料中に含まれる着色骨材の粒径、添加量を変え、それに伴って樹脂カウンターの要求品質を満足するために熱硬化性樹脂の種類や基本配合が変わり、熱硬化性樹脂成形材料の硬化温度が変わる場合に適用するにの最適である。
【００２４】
また、この出願の発明において、金型の形状、構造、熱硬化性樹脂成形材料の組成、温水の具体的な温度や成形圧等の成形条件、他の詳細については、目的、用途等に応じて、適宜選択、決定すれば良い。
そこで、以下に実施例を示し、この出願の発明について、さらに詳しく説明する。
【００２５】
【実施例】
（実施例１〜３）
表１に示すように、ビニルエステル樹脂〔武田薬品工業（株）製〕成形材料を使用して成形し、実施例１〜３に示す特性を有するシステムキッチンカウンターを製造した。
【００２６】
なお、この実施例１〜３においては、各実施例の樹脂の種類に合わせて請求項１に準じて各金型の温度上昇速度を調整して成形した。
【００２７】
【表１】
（実施例４〜６）
表２に示すように、上記実施例１〜３をベースに水酸化アルミニウムを複合した応用仕様の成形材料を使用して成形し、実施例４〜６に示す特性を有するシステムキッチンカウンターを製造した。
なお、この実施例４〜６においては、各実施例の樹脂の種類に合わせて請求項２および３に準じて各金型の温度上昇速度を調整して成形した。
【００２９】
【表２】
【発明の効果】
以上説明した通り、この出願の発明によって、新たな設備を増設することなく、硬化温度の異なる複数種類の熱硬化性樹脂成形材料をそれぞれの硬化温度に合わせて成形し、複数種類の樹脂成形品を容易に製造することができる。
【図面の簡単な説明】
【図１】この出願の第１の発明における金型温度上昇曲線の一実施形態を例示した図である。
【図２】この出願の第１の発明における金型・樹脂温度上昇曲線の一実施形態を例示した図である。
【図３】この出願の第２の発明における金型・樹脂温度上昇曲線の一実施形態を例示した図である。
【図４】従来技術を例示した製造工程図である。
【符号の説明】
１ 金型温度上昇曲線
２ 金型温度上昇曲線
３ 金型温度上昇曲線
４ 金型温度上昇曲線
５ 金型温度上昇曲線
６ 金型温度上昇曲線
７ 樹脂温度上昇曲線
８ 金型温度上昇曲線
９ 金型温度上昇曲線
１０ 金型温度上昇曲線
１１ 樹脂温度上昇曲線[0001]
BACKGROUND OF THE INVENTION
The invention of this application relates to a method for producing a resin molded product. More specifically, the invention of this application is capable of easily producing a plurality of types of resin molded products having different curing temperatures, and is useful as a resin counter for homes and the like that need to produce many types of counters. It is related with the manufacturing method.
[0002]
[Prior art]
Conventionally, when manufacturing a resin molded product such as a resin counter, as shown in FIG. 4, a plurality of molds (A) are filled with a thermosetting resin molding material and hot water is supplied, and casting is performed. A resin molded product is manufactured by molding using a molding method, compression molding method, or the like.
On the other hand, in the factory, as illustrated in FIG. 4, a high-temperature hot water system high-temperature hot water supply pipe (B), a medium-temperature hot-water system medium-temperature hot water supply pipe (C), a low-temperature hot-water system low-temperature hot water supply pipe (D), etc. There are a plurality of hot water supply paths, and one of the plurality of hot water supply paths is selectively used by a switching valve (E) depending on the application.
[0003]
For example, the high-temperature hot water supply pipe (B) is used when high-temperature hot water is supplied to mold and cure the thermosetting resin molding material in the mold (A), and the medium-temperature hot water supply pipe (C). Is used to supply hot water in order to inject and fill the thermosetting resin molding material into the mold (A), and the low temperature hot water supply pipe (D) is used to mold the thermosetting resin molding material. In order to cool the mold (A) after curing, it is used when supplying low temperature hot water.
[0004]
As described above, the hot water selected by switching by the switching valve (E) is supplied to each mold (A) through the pipe (F) according to the application, and is used as a heating medium or a cooling medium for the application. It's being used.
[0005]
[Problems to be solved by the invention]
However, each thermosetting resin molding material has an optimum curing temperature depending on the type of thermosetting resin, and when it is molded at a temperature different from this curing temperature, it becomes uncured or cures quickly. In some cases, residual strain or warpage may occur in the obtained resin molded product.
[0006]
Therefore, as illustrated in FIG. 4, when a plurality of molds (A) are filled with a thermosetting resin molding material and high-temperature hot water is supplied from a high-temperature hot water supply pipe (B), one type is used. When the thermosetting resin molding material is supplied to a plurality of molds (A) and molded to produce a plurality of resin molded products of the same type, the high temperature hot water temperature of the high temperature hot water supply pipe (B) is set as above. It is sufficient to match the curing temperature of one kind of thermosetting resin molding material, and no problem occurs.
[0007]
However, when filling a plurality of molds (A) with a plurality of different types of thermosetting resin molding materials and supplying high temperature hot water from the high temperature hot water supply pipe (B), molding is performed. Since the high-temperature hot water temperature supplied from the pipe (B) cannot be supplied in accordance with the curing temperatures of a plurality of types of thermosetting resin molding materials, there is a problem that it cannot be put to practical use. .
[0008]
The invention of this application has been made in view of the circumstances as described above, solves the above problems, and molds a plurality of types of thermosetting resin molding materials having different curing temperatures in accordance with the respective curing temperatures. And it aims at providing the manufacturing method of the resin molded product which can manufacture a multiple types of resin molded product easily.
[0009]
[Means for Solving the Problems]
The invention of this application was made in order to solve the above-mentioned problems, and the first invention is to fill a plurality of molds with a plurality of types of thermosetting resin molding materials having different curing temperatures. by molding by supplying hot water, when producing a plurality of types of resin molded products, the temperature of the hot water, out of the curing temperature of the plurality of types of the thermosetting resin molding material having different curing temperatures are set to the maximum curing temperature In addition, a flow rate adjustment valve is provided in the pipe for supplying hot water to each mold, and the temperature rise rate of each mold is adjusted by adjusting the amount of hot water supplied to each mold according to the curing temperature of the thermosetting resin molding material There is provided a method for producing a resin molded product, characterized in that a plurality of types of resin molded products are produced by adjusting and molding.
[0010]
In addition, the second invention is to fill a plurality of molds with a plurality of types of thermosetting resin molding materials having different curing temperatures and supply hot water to form a plurality of types of resin molded products. Among the curing temperatures of multiple types of thermosetting resin molding materials with different curing temperatures, the hot water is set to the highest curing temperature, and the medium and / or low temperature hot water is set to a temperature lower than the hot water. Supply / mixing means is provided in the pipe for supplying hot water to each mold, and the mixing ratio of high-temperature hot water and medium-temperature hot water or / and low-temperature hot water according to the curing temperature of the thermosetting resin molding material According to a third aspect of the present invention, there is provided a method for producing a resin molded product, characterized in that a plurality of types of resin molded products are manufactured by adjusting and mixing and supplying the molds to adjust the temperature rise rate of each mold. Supply hot water to each mold The pipe, the high temperature hot water supply pipe, hot water supply pipe 3 series of medium-temperature hot water supply pipe and cold hot water supply pipe via a mixing valve, connected to provide the method of the resin molded article of manufacture comprising communicating.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The invention of this application has the features as described above, and an embodiment thereof will be described below.
FIG. 1 is a diagram illustrating an embodiment of a mold temperature rise curve according to the first invention of this application, and FIG. 2 is a diagram illustrating an embodiment of a mold / resin temperature rise curve according to the present invention. is there.
[0012]
In the first invention of this application, for example, as described above, a plurality of types of thermosetting resin molding materials having different curing temperatures are filled into a plurality of molds, and hot water is supplied for molding. When manufacturing resin molded products, the temperature of hot water is set to the highest curing temperature among the curing temperatures of multiple types of thermosetting resin molding materials with different curing temperatures, and pipes that supply hot water to each mold are used. Provide a flow rate adjustment valve, and adjust the amount of hot water supplied to each mold according to the curing temperature of the thermosetting resin molding material filled in each mold, as will be described below with reference to FIGS. By adjusting the temperature rise rate of each mold by molding, molding is carried out at an optimum curing temperature to produce a plurality of types of resin molded products.
[0013]
That is, when the flow rate adjusting valve is throttled to decrease the amount of hot water supplied to the mold, the temperature rise rate of the mold becomes gradual as shown by the arrows in FIG. The temperature rise rate of each mold can be adjusted by a mold temperature rise curve as exemplified in 3).
Next, a situation where the temperature increase rate of the mold is adjusted according to the curing temperature of the thermosetting resin molding material will be described.
[0014]
That is, in the same manner as in FIG. 1, the flow rate adjustment valve is adjusted to adjust the temperature rise rate of each mold by the mold temperature rise curve as exemplified in FIGS. 2 (4) to (6). For example, when hot water is supplied to a mold after filling a thermosetting resin molding material having a relatively low curing temperature (or glass transition temperature) of the thermosetting resin molding material, it is illustrated in FIG. When the hot water is supplied by adjusting the mold temperature rise rate with the mold temperature rise curve, the thermosetting resin molding material is obtained with the resin temperature rise curve as illustrated in FIG. The temperature rises and can be molded and cured at an optimum curing temperature.
[0015]
Similarly to the above, also in other molds, by adjusting the amount of hot water supplied to each mold as described above, according to the curing temperature of the thermosetting resin molding material filled in each mold, 1 (1) to (3), FIGS. 2 (4) to (6), etc., and the temperature rising speed of each mold is adjusted by the mold temperature rising curve as exemplified in the others. Each filled thermosetting resin molding material can be molded and cured at an optimum curing temperature.
[0016]
As described above, in the first invention of this application, the temperature of hot water supplied to a plurality of molds is selected from the curing temperatures of a plurality of types of thermosetting resin molding materials having different curing temperatures to be filled in each mold. By setting the maximum curing temperature and providing a flow adjustment valve in the piping that supplies hot water to each mold, and adjusting the amount of hot water supplied to each mold according to the curing temperature of the thermosetting resin molding material Since it molds by adjusting the temperature rise speed of each mold and manufactures multiple types of resin molded products, without adding new equipment such as hot water supply tanks of various temperatures to each mold, A plurality of types of resin molded products can be easily manufactured by molding and curing at an optimal curing temperature according to the thermosetting resin molding material filled in each mold.
[0017]
FIG. 3 is a diagram illustrating an embodiment of a mold / resin temperature rise curve in the second invention of this application.
In the second invention of this application, for example, as described above, a plurality of types of thermosetting resin molding materials having different curing temperatures are filled into a plurality of molds, and hot water is supplied for molding. in producing the resin molded article, the temperature of the hot water, out of the curing temperature of the plurality of types of the thermosetting resin molding material having different curing temperatures, and high-temperature hot water set to the maximum hardening temperature was set at higher temperatures warm water low temperature Supply / mixing means such as a hot water supply pipe and a mixing valve for supplying / mixing the medium-temperature hot water and / or low-temperature hot water are provided in the pipe for supplying the hot water to each mold, as will be described below with reference to FIG. Each mold is prepared by adjusting the mixing ratio according to the curing temperature of the thermosetting resin molding material filled in each mold, mixing high-temperature hot water with medium-temperature hot water and / or low-temperature hot water, and supplying the mixture to each mold. Adjust the mold temperature rise rate to And molded at Do curing temperature, characterized in that to produce a plurality of kinds of resin molded articles.
[0018]
That is, when the mixing amount of medium-temperature warm water or / and low-temperature warm water (usually, only medium-temperature warm water can be used) is increased with respect to the high-temperature warm water, the examples shown in FIGS. The temperature rise speed of each mold can be adjusted by the mold temperature rise curve.
Next, a situation where the temperature increase rate of the mold is adjusted according to the curing temperature of the thermosetting resin molding material will be described.
[0019]
That is, as described above, by adjusting the mixing ratio of the medium-temperature warm water (or / and the low-temperature warm water) to the high-temperature warm water, each of the mold temperature rise curves as illustrated in FIGS. When adjusting the temperature rise rate of the mold, for example, when supplying hot water to a mold filled with a thermosetting resin molding material having a relatively low curing temperature (or glass transition temperature) of the thermosetting resin molding material When the hot water is supplied by adjusting the mold temperature rise rate with the mold temperature rise curve as illustrated in FIG. 3 (9), the resin temperature rise curve as illustrated in FIG. 3 (11) is obtained. As a result, the temperature of the thermosetting resin molding material increases, and molding and curing can be performed at an optimum curing temperature.
[0020]
As described above, in the second invention of this application, the temperature of hot water supplied to a plurality of molds is selected from the curing temperatures of a plurality of types of thermosetting resin molding materials having different curing temperatures to be filled in each mold. , Supply / mixing means for supplying / mixing hot / warm water set at the highest curing temperature and medium / warm / warm water set at a lower temperature than hot / warm water is provided in the pipe for supplying hot water to each mold. According to the curing temperature of the thermosetting resin molding material, by adjusting the mixing ratio of high temperature hot water and medium temperature hot water or / and low temperature hot water, mixing, and feeding, the temperature rising speed of each mold is adjusted and molded, Since a plurality of types of resin molded products are manufactured, the optimum according to the thermosetting resin molding material filled in each mold without adding new equipment, as in the first invention of the application. Molding and curing at various curing temperatures Several kinds of resin molded article can be easily manufactured.
[0021]
The third invention of this application shows one embodiment for carrying out the second invention of the above-mentioned application. For example, as described above, a plurality of types of thermosetting resin molding materials having different curing temperatures are filled. Three lines of hot water supply pipes, a high temperature hot water supply pipe, a medium temperature hot water supply pipe and a low temperature hot water supply pipe, are arranged in the pipe for supplying hot water to each mold, and these three series of hot water supply pipes are connected via a mixing valve. The hot water supplied from the high temperature hot water supply pipe, the intermediate hot water supplied from the intermediate hot water supply pipe, and the low temperature hot water supply pipe The supplied low-temperature hot water is mixed at a mixing ratio through a mixing valve, mixed and supplied to each mold to adjust the temperature rise rate of each mold and molded at an optimal curing temperature, It is characterized by manufacturing multiple types of resin molded products. That.
[0022]
As described above, in the third invention of this application, the hot water supply pipe, the intermediate hot water supply pipe, and the low temperature hot water supply pipe are connected and connected to the pipes for supplying hot water to the molds via the mixing valve. Therefore, as illustrated in FIG. 4, the low temperature of the existing high temperature hot water supply pipe (B) of the existing high temperature hot water system, the intermediate temperature hot water supply pipe (C) of the medium temperature hot water system, and the low temperature hot water system are provided. Instead of the switching valve (E) that diverts the hot water supply pipe (D) and selectively uses one of the hot water paths, a mixing valve is arranged, and the above three series are connected via this mixing valve. Can be supplied to each mold (A) via the existing pipe (F), and therefore, each mold can be filled without adding new equipment. Molded and cured at the optimal curing temperature according to the thermosetting resin molding material The kind of the resin molded article can be easily manufactured.
[0023]
In addition, when three series of hot water supply pipes are used in combination, it is possible to perform subtle temperature control by adjusting the mixing ratio of the three series of hot water, and to cope with various curing temperatures finely. .
The invention of this application is different from the resin counter in that the particle size and the amount of the colored aggregate contained in the thermosetting resin molding material are changed in order to change the color, pattern, etc. In order to satisfy the required quality, the type and basic composition of the thermosetting resin are changed, and it is optimal for application when the curing temperature of the thermosetting resin molding material changes.
[0024]
In the invention of this application, the shape of the mold, the structure, the composition of the thermosetting resin molding material, the molding conditions such as the specific temperature and molding pressure of hot water, and other details depend on the purpose, application, etc. Therefore, it may be selected and determined as appropriate.
Then, an Example is shown below and the invention of this application is demonstrated in more detail.
[0025]
【Example】
(Examples 1-3)
As shown in Table 1, molding was performed using a vinyl ester resin (manufactured by Takeda Pharmaceutical Co., Ltd.) molding material, and a system kitchen counter having the characteristics shown in Examples 1 to 3 was manufactured.
[0026]
In Examples 1 to 3, molding was carried out by adjusting the temperature increase rate of each mold in accordance with Claim 1 according to the type of resin in each Example.
[0027]
[Table 1]
(Examples 4 to 6)
As shown in Table 2, a system kitchen counter having the characteristics shown in Examples 4 to 6 was manufactured by using an application specification molding material in which aluminum hydroxide was combined based on Examples 1 to 3 above. .
In Examples 4 to 6, molding was performed by adjusting the temperature increase rate of each mold according to claims 2 and 3 according to the type of resin in each example.
[0029]
[Table 2]
【The invention's effect】
As described above, according to the invention of this application, a plurality of types of thermosetting resin molding materials having different curing temperatures can be molded according to each curing temperature without adding new equipment, and a plurality of types of resin molded products can be formed. Can be easily manufactured.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating one embodiment of a mold temperature rise curve in the first invention of this application.
FIG. 2 is a diagram illustrating an embodiment of a mold / resin temperature rise curve in the first invention of this application.
FIG. 3 is a diagram illustrating one embodiment of a mold / resin temperature rise curve in the second invention of this application.
FIG. 4 is a manufacturing process diagram illustrating the prior art.
[Explanation of symbols]
1 Mold temperature rise curve 2 Mold temperature rise curve 3 Mold temperature rise curve 4 Mold temperature rise curve 5 Mold temperature rise curve 6 Mold temperature rise curve 7 Resin temperature rise curve 8 Mold temperature rise
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21135099A JP3777887B2 (en) | 1999-07-26 | 1999-07-26 | Manufacturing method of resin molded products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21135099A JP3777887B2 (en) | 1999-07-26 | 1999-07-26 | Manufacturing method of resin molded products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001030281A JP2001030281A (en) | 2001-02-06 |
| JP3777887B2 true JP3777887B2 (en) | 2006-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21135099A Expired - Fee Related JP3777887B2 (en) | 1999-07-26 | 1999-07-26 | Manufacturing method of resin molded products |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5105704B2 (en) * | 2004-12-07 | 2012-12-26 | 株式会社シスコ | Heating / cooling system and heating / cooling method for heat press or heating / cooling mold |
| JP5577034B2 (en) | 2006-06-20 | 2014-08-20 | 新日鉄住金化学株式会社 | Cationic polymerizable composition and method for controlling cationic polymerization |
| JP5372596B2 (en) * | 2009-05-14 | 2013-12-18 | 北川精機株式会社 | Press machine |
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1999
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