JP7319280B2 - 低温での三次元物体の付加製造に使用可能な支持体材料配合物 - Google Patents
低温での三次元物体の付加製造に使用可能な支持体材料配合物 Download PDFInfo
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- JP7319280B2 JP7319280B2 JP2020536771A JP2020536771A JP7319280B2 JP 7319280 B2 JP7319280 B2 JP 7319280B2 JP 2020536771 A JP2020536771 A JP 2020536771A JP 2020536771 A JP2020536771 A JP 2020536771A JP 7319280 B2 JP7319280 B2 JP 7319280B2
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Description
本願は、2017年12月31日出願の米国仮特許出願No.62/612455の優先権の利益を主張し、その内容は、参考としてその全体をここに組み入れる。
本発明は、その一部の実施形態では、付加製造に関し、特に限定されないが、低い作業温度(例えば50℃未満)で実施される付加製造に使用可能な支持体材料配合物に関する。
本発明の一部の実施形態の態様によれば、本明細書に規定されるように、35℃で50cPs以下の粘度を具備する、三次元物体の付加製造に支持体材料配合物として使用可能な配合物が提供される。
(AのMWx重量%+BのMWa重量%)/硬化性材料の全重量%
R1及びR2の少なくとも一つは、本明細書に規定されるように、親水性基であるか、及び/又はそれを含む。
式中、R3,R4及びR5の各々は、独立して水素、C(1-4)アルキル、又は本明細書に規定されるような親水性基であり;
L1,L2及びL3の各々は、独立して連結部分であるか、又は不存在であり;
P1及びP2の各々は、独立して本明細書に規定されるように親水性基であるか、又は不存在であり;
X1,X2及びX3の各々は、独立してC(1-4)アルキル、又は本明細書に規定されるような親水性基であるか、又は不存在であり;
n,m及びkの各々は、0,1,2,3又は4であり、
但し、n+m+kは、少なくとも2であり、R3,R4,R5,X1,X2,X3,P1及びP2の少なくとも一つは、本明細書に規定されるように親水性基である。
本明細書に記載された実施形態のいずれかの一部では、本明細書に記載される配合物は、硬化されたとき、攪拌又は攪乱なしで、及び水噴射のような機械手段の適用なしで、室温で、水又はいずれかの他の中性水溶液に本明細書に規定されるように接触すると溶解可能である材料(例えば支持体材料)を与える。かかる配合物はまた、本明細書では水に溶解可能(可溶性)である硬化された材料を与えるものとして言及される。
配合物の全重量の20~25重量%の量の、それぞれの実施形態のいずれかにおいて本明細書に記載されるような少なくとも一種の硬化性材料;
配合物の全重量の40~60重量%の量の、それぞれの実施形態のいずれかにおいて本明細書に記載されるような少なくとも一種の非硬化性材料;及び
配合物の全重量の20~40重量%の量の水。
配合物の全重量の25~30重量%の量の少なくとも一種の硬化性材料;及び
配合物の全重量の60~80重量%の量の少なくとも一種の非硬化性材料。
配合物の全重量の25~30重量%の量の本明細書に記載されるような少なくとも一種の硬化性材料;及び
配合物の全重量の60~80重量%の量の少なくとも一種の非硬化性材料。
本明細書に記載された実施形態のいずれかの一部では、それぞれの実施形態のいずれか及びそれらのいずれかの組み合わせにおいて本明細書に記載されるように、支持体材料配合物を含むキットが提供される。
本発明の一部の実施形態の態様によれば、本明細書に記載されるような支持体材料配合物を利用する、三次元造形物体を製作する方法が提供される。この方法はまた、本明細書では製作方法(プロセス)として又は造形物製作方法(プロセス)として言及される。一部の実施形態では、この方法は、物体の形状に対応する構成パターンで複数の層を逐次形成するように未硬化構築材料を吐出することを含む。一部の実施形態では、(未硬化)構築材料は、それぞれの実施形態のいずれかにおいて本明細書に記載されるように造形用材料配合物及び支持体材料配合物を含む。
3Dインクジェット印刷実験が、40~42℃を越えない噴射温度で、単一モード又はデジタルモードのいずれかで、Objet30TM,Objet Eden260VSTM、又はJ750TM印刷システム(Stratasys Ltd.、イスラエル)のいずれかを使用して実施された。
支持体材料配合物設計
本発明者は、40℃を越えない、好ましくは35℃を越えない噴射温度で3Dインクジェット印刷法で使用されることができる支持体材料配合物の探索において、数年間、広範な研究を行なった。
非溶解性支持体材料配合物
以下の表1は、SUP706(商品名)と同様の特性を持つ、即ち水噴射の付与で溶解可能である、支持体材料を形成するために好適な例示的な支持体材料配合物の化学組成を与える。この配合物はまた、本明細書では水に溶解可能でない硬化材料を与えるものとして言及される。
溶解可能な配合物
「溶解可能な支持体配合物」は一般に、硬化されたとき、水圧、及び/又は造形物体からそれを除去するための他の機械手段を使用する必要なしで、水溶液に浸漬すると溶解可能である材料を与える配合物を意味する。
Claims (12)
- 三次元物体の3Dインクジェット印刷に使用可能な支持体材料配合物であって、前記支持体材料配合物が、
前記支持体材料配合物の全重量の20~25重量%の量の、硬化されたとき、水溶液において溶解可能又は膨潤可能な材料を与える少なくとも一種の親水性硬化性材料;
前記少なくとも一種の親水性硬化性材料から形成された硬化された材料によって膨潤されることができる少なくとも一種の非硬化性材料;及び
水
を含み、
前記少なくとも一種の非硬化性材料及び前記水の量が、前記支持体材料配合物の全重量の65~85重量%の範囲であり、前記少なくとも一種の非硬化性材料の量が前記支持体材料配合物の全重量の40~60重量%であり、前記水の量が前記支持体材料配合物の全重量の20~40重量%であり、
前記少なくとも一種の親水性硬化性材料が、ポリ(アルキレングリコール)アクリレートを含み、前記少なくとも一種の非硬化性材料が、プロピレングリコールを含み、
前記少なくとも一種の非硬化性材料に対する又は前記少なくとも一種の非硬化性材料と水の混合物に対する前記硬化された材料の膨潤能力が、その重量の少なくとも70%又は少なくとも80%又は少なくとも100%であり、
前記支持体材料配合物が、35℃で50cPs以下の粘度を具備する、支持体材料配合物。 - 前記支持体材料配合物が、光開始剤をさらに含む、請求項1に記載の支持体材料配合物。
- 前記光開始剤の量が、前記支持体材料配合物の全重量の2重量%未満又は1.5重量%未満又は1重量%未満である、請求項2に記載の支持体材料配合物。
- 三次元物体の3Dインクジェット印刷に使用可能な支持体材料配合物であって、前記支持体材料配合物が、
硬化されたとき、水溶液において溶解可能又は膨潤可能な材料を与える少なくとも一種の親水性硬化性材料;及び
前記少なくとも一種の親水性硬化性材料から形成された硬化された材料によって膨潤されることができる少なくとも一種の非硬化性材料
を含み、
前記少なくとも一種の親水性硬化性材料が、単官能親水性硬化性材料及び多官能親水性硬化性材料を、前記支持体材料配合物の全重量の20~35重量%又は20~30重量%又は25~30重量%の全量で含み、
前記少なくとも一種の非硬化性材料の量が、前記支持体材料配合物の全重量の65~80重量%の範囲であり、
前記単官能親水性硬化性材料と前記多官能親水性硬化性材料の重量比が2:1~5:1の範囲であり、
前記単官能親水性硬化性材料が、ポリ(アルキレングリコール)アクリレートを含み、
前記多官能親水性硬化性材料が、ポリエーテルウレタンジ又はトリアクリレートを含み、
前記少なくとも一種の非硬化性材料が、プロピレンカーボネートを含み、
前記少なくとも一種の非硬化性材料に対する又は前記少なくとも一種の非硬化性材料と水(もし存在するなら)の混合物に対する前記硬化された材料の膨潤能力が、その重量の少なくとも70%又は少なくとも80%又は少なくとも100%であり、
前記支持体材料配合物が、35℃で50cPs以下の粘度を具備する、支持体材料配合物。 - 前記支持体材料配合物が、光開始剤をさらに含む、請求項4に記載の支持体材料配合物。
- 前記光開始剤の量が、前記支持体材料配合物の全重量の1~3重量%の範囲である、請求項5に記載の支持体材料配合物。
- 三次元物体の3Dインクジェット印刷に使用可能な支持体材料配合物であって、前記支持体材料配合物が、
前記支持体材料配合物の全重量の25~30重量%の量の、硬化されたとき、室温で水溶液において溶解可能又は膨潤可能な材料を与える少なくとも一種の親水性硬化性材料;及び
前記少なくとも一種の親水性硬化性材料から形成された硬化された材料によって膨潤されることができる少なくとも一種の非硬化性材料
を含み、
前記少なくとも一種の非硬化性材料の量が、前記支持体材料配合物の全重量の70~75重量%の範囲であり、
前記少なくとも一種の親水性硬化性材料が、単官能硬化性材料であり、
前記非硬化性材料が、ポリプロピレングリコールを含み、
前記ポリプロピレングリコールの量が、前記支持体材料配合物の全重量の少なくとも30重量%であり、
前記非硬化性材料が、ポリオールをさらに含み、
前記少なくとも一種の非硬化性材料に対する又は前記少なくとも一種の非硬化性材料と水(もし存在するなら)の混合物に対する前記硬化された材料の膨潤能力が、その重量の少なくとも70%又は少なくとも80%又は少なくとも100%であり、
前記支持体材料配合物が、35℃で50cPs以下の粘度を具備する、支持体材料配合物。 - 前記支持体材料配合物が、光開始剤をさらに含む、請求項7に記載の支持体材料配合物。
- 前記光開始剤の量が、前記支持体材料配合物の全重量の1~3重量%の範囲である、請求項8に記載の支持体材料配合物。
- 水溶液に溶解可能である、請求項1~9のいずれかに記載の支持体材料配合物。
- 三次元物体を製作する方法であって、前記方法が、
物体の形状に対応する三次元印刷データを受けること;
前記印刷データに従って、少なくとも一つのインクジェット印刷ヘッドを使用して、受容媒体の上に、未硬化構築材料の液滴を層状に吐出すること
を含み、
前記未硬化構築材料が、少なくとも一種の造形用材料配合物及び少なくとも一種の支持体材料配合物を含み、前記支持体材料配合物が、請求項1~10のいずれかに記載の配合物であり、
前記少なくとも一種のインクジェット印刷ヘッドの温度が、35℃以下である、方法。 - 前記少なくとも一種の造形用材料配合物が、35℃で50cPs以下の粘度を具備する、請求項11に記載の方法。
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