TWI610787B - 發泡容器製作方法 - Google Patents
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Classifications
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- B32B5/20—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material foamed in situ
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- General Chemical & Material Sciences (AREA)
- Laminated Bodies (AREA)
Abstract
一種發泡容器製作方法,其係於一容器之至少一面上均勻塗佈發泡材料,而該發泡材料係包含有食品級PU分散液、聚乙烯醇(PVA)、發泡劑、增粘劑及添加劑混製而成,之後將塗佈發泡材料之容器進行加熱,使發泡材料受熱後於容器之一面上形成一發泡層。藉此,除可提昇製程速度並減少製作耗能之外,更可使該而發泡層達到厚度增加、耐水解性佳、耐刮度佳以及隔熱效果較佳之功效。
Description
本發明是有關於一種發泡容器製作方法,尤指一種除可提昇製程速度並減少製作耗能之外,更可使該而發泡層達到厚度增加、耐水解性佳、以及隔熱效果較佳之功效者。
按,一般習用之發泡容器於製作時,係於容器表面塗佈聚丙烯(PU)、聚乙烯(PE)或PLA等材料作為發泡材料,之後再同時將容器與發泡材料進行烘烤,而使聚丙烯(PU)、聚乙烯(PE)或PLA等材料於容器表面形成一發泡層。
然,以上述習用藉由聚丙烯(PU)、聚乙烯(PE)或PLA作為發泡材料而言,由於聚丙烯(PU)、聚乙烯(PE)或PLA僅係為單純之塑膠材料,因此,當聚丙烯(PU)、聚乙烯(PE)或PLA於烘烤受熱時,常會有發泡效果不佳之情形發生,且當烘烤溫度加熱至120℃時,而該聚乙烯(PE)紙杯內膜則易產生過熱脫膜現象。
再者當容器表面以聚丙烯(PU)、聚乙烯(PE)或PLA等作為發泡材料進行烘烤加熱時,由於其烘烤之方式係同時對容器與發泡材料等進行加熱,但事實上僅需對發泡材料加熱即可,因此,在加熱過程中容器及發泡材料皆同時吸收烘烤時所產生之熱能,如此,除較無法控制加熱時間及溫度之外,更會因為容器及發泡材料接進行收熱而產生能源之損耗。
為解決習用之種種缺失,本案之發明人特潛心研究,開發出一種「發泡容器製作方法」,以有效改善習用之缺點。
本發明之主要目的係在於,除可提昇製程速度並減少製作
耗能之外,更可使該而發泡層達到厚度增加、耐水解性佳、耐刮度佳以及隔熱效果較佳之功效。
為達上述之目的,本發明係一種發泡容器製作方法,其包含有下列步驟:
步驟一:取一容器。
步驟二:於該容器之至少一面上均勻塗佈或印刷發泡材料,而該發泡材料係包含有食品級PU分散液、聚乙烯醇(PVA)、發泡劑、增粘劑及添加劑混製而成。
步驟三:將塗佈印刷之發泡材料容器進行加熱,使發泡材料受熱後於容器之一面上形成一發泡層。
於本發明之一實施例中,該容器係為紙製杯體、紙製盤體或紙製餐盒。
於本發明之一實施例中,該食品級PU分散液之劑量係介於70wt%~90wt%之間。
於本發明之一實施例中,該聚乙烯醇(PVA)之劑量係介於5wt%~15wt%之間。
於本發明之一實施例中,該發泡劑係可為食品級化學性發泡劑、物理性發泡劑或機械性發泡劑,而該發泡劑之劑量係介於0wt%~10wt%之間。
於本發明之一實施例中,該增粘劑係可為食品級Sodium polyacrylate、聚異丁烯(PolyisoButylene)、Xanthan Gum或卡得蘭膠(Curdlan),而該增粘劑之劑量係介於1wt%~5wt%之間。
於本發明之一實施例中,該添加劑之劑量係介於0wt%~3wt%之間。
於本發明之一實施例中,該添加劑係可為架橋劑、鍊延長劑、消泡劑或催化劑。
於本發明之一實施例中,該架橋劑係可為食品級polyaziridine、Di-aziridine、polycarbodiimide或cyclopolyiimie。
於本發明之一實施例中,該消泡劑係可為食品級silicon、silicon compound、polyether、alcohol、醇化合物、amide或parafin wax。
於本發明之一實施例中,該步驟三中發泡材料之加熱溫度係為100℃±10℃。
於本發明之一實施例中,該發泡材料之加熱方式係以微波爐於400w~800w之間加熱30秒±10%。
於本發明之一實施例中,該發泡材料於加熱形成發泡層後,其厚度係至少增加6倍。
1‧‧‧容器
2‧‧‧發泡材料
2a‧‧‧發泡層
3‧‧‧微波設備
第1圖,係本發明步驟一之示意圖。
第2圖,係本發明步驟二之示意圖。
第3圖,係本發明步驟三之示意圖。
第4圖,係本發明步驟三之成型狀態示意圖。
第2圖,係本發明之使用態樣示意圖。
請參閱『第1、2、3及第4圖』所示,係分別為本發明步驟一之示意圖、本發明步驟二之示意圖、本發明步驟三之示意圖及本發明步驟三之成型狀態示意圖。如圖所示:本發明係一種發泡容器製作方法,其包含有下列步驟:
步驟一:取一容器1,而該容器1係為紙製杯體、紙製盤體或紙製餐盒(如第1圖所示,今本實施例中係以紙製杯體為例)。
步驟二:於該容器1之至少一面上均勻塗佈印刷發泡材料2,而該發泡材料2係包含有70wt%~90wt%之食品級PU分散液、5wt%~15wt%之聚乙烯醇(PVA)、0wt%~10wt%之發泡劑、1wt%~5wt%之增粘劑及0wt%~3wt%之添加劑混製而成,其中該發泡劑係可為食品級化學性發泡劑、物理性發泡劑或機械性發泡劑,該增粘劑係可為食品級Sodium polyacrylate、聚異丁烯(PolyisoButylene)、Xanthan Gum或卡得蘭膠(Curdlan),且該添加劑係可為架橋劑、鍊延長劑、消泡劑或催化劑,然該架橋劑係可為食品級polyaziridine、Di-aziridine、polycarbodiimide或cyclopolyiimie等,該
消泡劑係可為食品級silicon、silicon compound、polyether、alcohol、醇化合物、amide或parafin wax等,而由於該聚乙烯醇(PVA)係具有黏著之特性,且該食品級PU分散液係具有高分子水溶性之特性,因此,可均勻塗佈於發泡材料2上(如第2圖所示)。
步驟三:將塗佈發泡材料2之容器1進行加熱,而該發泡材料2之加熱方式係以微波設備3於400w~800w之間加熱30秒±10%(如第3圖所示),並使該發泡材料2達到100℃±10℃之加熱溫度,而由該發泡材料2中係含有黏著性之聚乙烯醇(PVA)以及有高分子水溶性之食品級PU分散液,因此,使用微波設備3進行加熱時,便可依微波設備3僅對水溶液加熱之特性,而直接使發泡材料2中之聚乙烯醇(PVA)受熱後於容器1之表面上均勻產生多數封閉之氣泡,藉以配合食品級PU分散液附著於容器1之表面上,而不會造成熱源之浪費,進而可提昇製程速度並減少製作耗能,如此,便可讓發泡材料2受熱後於容器1之一面上形成一發泡層2a(如第4圖所示),而該發泡材料2於加熱形成發泡層2a後,其厚度係至少增加6倍,如此,可達到厚度增加、耐水解性佳、耐刮度佳以及隔熱效果較佳之功效。
然,本發明之發泡層2a係可依所需分別設置於容器1之內側面或外側面,或是同時設置於容器1之內外兩側面上,以使容器具有保溫效果。
綜上所述,本發明發泡容器製作方法可有效改善習用之種種缺點,除可提昇製程速度並減少製作耗能之外,更可使該而發泡層達到厚度增加、耐水解性佳、耐刮度佳以及隔熱效果較佳之功效;進而使本發明之產生能更進步、更實用、更符合消費者使用之所須,確已符合發明專利申請之要件,爰依法提出專利申請。
惟以上所述者,僅為本發明之較佳實施例而已,當不能以此限定本發明實施之範圍;故,凡依本發明申請專利範圍及發明說明書內容所作之簡單的等效變化與修飾,皆應仍屬本發明專利涵蓋之範圍內。
1‧‧‧容器
2a‧‧‧發泡層
Claims (10)
- 一種發泡容器製作方法,包括有下列步驟:步驟一:取一容器;步驟二:於該容器之至少一面上均勻塗佈發泡材料,而該發泡材料係包含有食品級PU分散液、聚乙烯醇(PVA)、發泡劑、增粘劑及0wt%~3wt%之添加劑混製而成,其中該添加劑係可為架橋劑、鍊延長劑、消泡劑或催化劑,且該架橋劑係可為食品級polyaziridine、Di-aziridine、polycarbodiimide或cyclopolyiimie;以及步驟三:將塗佈發泡材料之容器進行加熱,使發泡材料受熱後於容器之一面上形成一發泡層。
- 依申請專利範圍第1項所述之發泡容器製作方法,其中,該容器係為紙製杯體、紙製盤體或紙製餐盒。
- 依申請專利範圍第1項所述之發泡容器製作方法,其中,該食品級PU分散液之劑量係介於70wt%~90wt%之間。
- 依申請專利範圍第1項所述之發泡容器製作方法,其中,該聚乙烯醇(PVA)之劑量係介於5wt%~15wt%之間。
- 依申請專利範圍第1項所述之發泡容器製作方法,其中,該發泡劑係可為食品級化學性發泡劑、物理性發泡劑或機械性發泡劑,而該發泡劑之劑量係介於0wt%~10wt%之間。
- 依申請專利範圍第1項所述之發泡容器製作方法,其中,該增粘劑係可為食品級Sodium polyacrylate、聚異丁烯(PolyisoButylene)、Xanthan Gum或卡得蘭膠(Curdlan),而該增粘劑之劑量係介於1wt%~5wt%之間。
- 依申請專利範圍第1項所述之發泡容器製作方法,其中,該消泡劑係可為食品級silicon、silicon compound、polyether、alcohol、醇化合物、amide或parafin wax。
- 依申請專利範圍第1項所述之發泡容器製作方法,其中,該步驟三中發泡材料之加熱溫度係為100℃±10℃。
- 依申請專利範圍第8項所述之發泡容器製作方法,其中,該發泡材料之加熱方式係以微波爐於400w~800w之間加熱30秒±10%。
- 依申請專利範圍第9項所述之發泡容器製作方法,其中,該發泡材料於加熱形成發泡層後,其厚度係至少增加6倍。
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AR074999A1 (es) * | 2009-01-24 | 2011-03-02 | Bayer Materialscience Ag | Espumas de dispersion de poliuretano de dos componentes |
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US3085896A (en) * | 1958-02-10 | 1963-04-16 | Interchem Corp | Method of making foamed polyurethanes |
CN1184062A (zh) * | 1996-11-29 | 1998-06-10 | 日本得意纸品有限公司 | 绝热性纸制容器及其制造方法 |
US20030152724A1 (en) * | 1997-02-26 | 2003-08-14 | Fort James Corporation | Coated paperboards and paperboard containers having improved tactile and bulk insulation properties |
JP5047668B2 (ja) * | 2006-09-29 | 2012-10-10 | 日本製紙株式会社 | 紙製容器およびその製造方法 |
CN101583485A (zh) * | 2007-04-10 | 2009-11-18 | 三井-杜邦聚合化学株式会社 | 具有发泡树脂层的层合膜或片材及其制造方法 |
CN101981140B (zh) * | 2008-03-28 | 2014-05-07 | 日清食品控股株式会社 | 印刷用油墨组合物、使用该油墨组合物的纸制容器材料和绝热性发泡纸制容器 |
US20110111150A1 (en) * | 2008-03-31 | 2011-05-12 | Nissin Foods Holdings Co., Ltd. | Brightening ink composition for printing, paper container material using the brightening ink composition, and heat insulating foamed paper container |
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