CN1121892A - 用于香味产品如咖啡及类似产品的排气阀 - Google Patents
用于香味产品如咖啡及类似产品的排气阀 Download PDFInfo
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 10
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- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 5
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/16—Closures not otherwise provided for with means for venting air or gas
- B65D51/1633—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element
- B65D51/1644—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element the element being a valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/16—Closures not otherwise provided for with means for venting air or gas
- B65D51/1605—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior
- B65D51/1616—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior by means of a filter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/22—Details
- B65D77/225—Pressure relief-valves incorporated in a container wall, e.g. valves comprising at least one elastic element
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tea And Coffee (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Packages (AREA)
- Apparatus For Making Beverages (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
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Abstract
一种用于香味产品如咖啡等的单向排气阀(4),包括一个阀体(5,6),一个阀件(12)及一个选择型的过滤器(17,170),该过滤器最好由活性炭组成,它可使低分子重量的气体,如二氧化碳通过,而阻止了发出香味的高分子重量的气体。
Description
本发明涉及一种用于被包装在气密容器中的香味产品或能产生香味的产品,特别是粉末状产品如咖啡及类似产品的阀。本文以下将专门参照咖啡描述,应该理解,这里所述一切总地也适用于产生香味的所有类似产品。
上述类型的阀显然是已公知的,并被通称为排气阀。它们通常是设于容器上壁的单向阀,其目的在于能使由咖啡发出的气体从容器中逸出,由此可避免可能形成的内部过压,这种过压会引起容器本身的膨胀和/或破裂,并同时用于阻止空气进入容器,因为这会使产品的质量受损。
目前所使用的用于此目的的单向阀当内部产生轻微过压时能完善地打开而在过压结束时立即闭合。
但是这类阀由于以下原因具有很大缺点。
新鲜(新包装)的咖啡在容器中会产生一种混合气体,它由主要是二氧化碳及较小百分比的所谓芳香气体组成的,该芳香气体的特征是复杂的分子链及由此具有大的分子重量。
目前使用的单向阀设有多孔过滤器,它的唯一目的是阻止咖啡粒外逸。在容器内部过压的情况下,因而,这类阀能使二氧化碳及产品的芳香气体通过阀逸出。
本发明的目的是克服该缺点并实际上完好地保留产品的香味,阻止芳香气体、即具有长分子链的气态变化物的任何外逸。
该目的根据本发明是这样实现的,即提供一种装有选择过滤器的排气阀,它能允许二氧化碳及其它任何气体,如氧气,氮气及甲烷气的分子通过,而阻挡确定产品香味的分子通过,这些有香味的分子便仍落在容器内部,因而提高了产品的质量。
多孔的分子分离器或筛可用来作为选择过滤器。但是,在所进行试验中观察到:最好地起到这种选择功能的过滤器是基于活性炭的混合物。这大概是由于这些活性炭、无论是植物型的还是天然型的,是通过热解获得的,该热解是与咖啡烤制时所进行的操作相似的一种操作。
这类活性炭可单独使用或与其它物质混合使用,以便完成特别专门的任务,例如与酸性物质如柠檬酸混合来中和碱性气体,或者相反,混合碱性物质例如氢氧化钠来中和酸性气体。
通过以下参照附图中所示的纯粹示范的、并因此也是非限制性的实施例的详细说明,将使本发明的另外特征变得更加清楚。附图为:
图1是装有根据本发明的一种选择过滤器的排气阀的概要图;
图2是装在一容器上的图1中的阀的概要剖面图,其中容器只示出局部;
图3是装有这种阀的容器的简要立体图;
图4是另一种阀过滤器实施例的概要剖面图。
参看这些图,在图3中标号1总地表示一个用于香味产品、尤其是咖啡的容器,它是有韧性的或是半刚性类型的,例如是意大利专利申请MI-91A001770中所描述的类型。
在图示例中,在容器的顶部上具有一易拉片2,它被拉下容器便打开,容器还可借助一个未在图中示出的盖再被关上。
易拉片2上设有一个孔3,在孔的下方装有排气阀,该阀总地用标号4表示,它是用加热焊接或者用胶粘接在片2上的。
排气阀4,它的总地结构可认为基本是公知的,包括一个基盘5及一个坐在其中的帽6。帽6在其下边缘附近具有一个环形槽7,它与设在盘5底部相应的环形凸楔8相嵌合。在凸楔8的上方可看到一个平的环形壁9,它围绕着设有孔11的中心隔板10。
在帽6及盘5之间插有一橡胶膜片12,它起一真实阀的作用,该膜片12的四周部分靠放在盘的所述平环形壁9上,在该壁9上铺有一层粘性或胶状层13,以便形成更好的密封。利用设在帽6的顶壁中对立的凸块14将该膜片12压在盘5上,在帽中还设有一个气孔15。
在盘5的底部构成一定形状,以使得在它的底部,隔板10的下面具有一个用于过滤器17的空腔16,对此将在下面作更详细的描述。
阀4被沿着盘5的上部外侧边缘的环形路径18被焊或粘在片2上。
该阀如下地工作:
在正常状态下,橡胶膜片12被压在盘5的平壁9上,并由于具有粘性或胶状层13,既提供了防止气体从容器1内部外逸的密封也提供了防止空气从外部进入的密封。
在容器1内部过压的情况下,膜片12从壁9上升起,以使气体经由孔11,膜片12及壁9之间形成的空隙,帽6中的孔15及易拉片2中的孔3逸出到外部环境中。当恢复至正常情况时,膜片12重新下落,以防止空气沿与上述相反的路径进入容器。
当气体从容器中排出时,为了阻止咖啡的芳香气体也被排出,使用了一种选择型过滤器。
在图1及2所示的优选实施例中,过滤器17包括两层多孔纸19及20,在其中间放置了活性炭粉末21。这两个纸层19及20沿它们的外缘被粘在一起,然后该整个过滤器17可沿其外周缘22被粘或被热焊在盘5的空腔16的内部。如果该空腔16具有稍微倾斜的侧壁23,则使它的口变窄,如图1及2所示,过滤器17便可自动地保留在空腔的内部,而无需另外的固定装置。
利用过滤器的结构,由咖啡发出的气体在经由橡胶膜片12以前,就被通过活性炭21过滤,它阻挡了某些气体,即具有长分子链的气体,于是就使活性炭本身吸收及富集了芳香气体分子。
一旦咖啡停止发出气体,这些芳香气体分子就以高浓度受阻地保留在活性炭中。
于是,在一个非常小的容积(基本是过滤器17的容积)中具有高浓度的芳香气体分子,这些分子是与外部环境隔开的并与内部环境相接触的,即在容器1的端部空间30中芳香气体分子在气体中被削减在一个低浓度上。
这将在过滤器17的容积及容器端部空间之间存在一个压力差,为了恢复了压力平衡,被阻挡在过滤器中的气体随后将返流到容器内部,使气体中富集芳香气体,芳香气体也渗透到咖啡的小空穴中,因此增加了咖啡中这种气体的浓度,产生了显著的优点。
在过滤器17中的活性炭21可以和其它物质相混合,例如用于中和碱性气体的酸性物质如柠檬酸,或用于中和酸性气体的碱性物质如氢氧化钠。
图4表示过滤器的另一实施例,它用170表示,按照该图,它包括单个多孔纸层171,在其上至少铺有一层活性炭层172,该活性炭预先混合了赋形剂,例如水及糖。
图4表示出多个层172,每个层可起到专门的功能,例如中和碱性或酸性气体。
显然,根据本发明的阀可以用于任何型式的韧性、气密的,用于盛发出气味的所有产品的包装袋或容器上,并一定不会使外部环境受到污染。
Claims (11)
1.用于香味产品的排气阀,包括一个阀体(5,6)及一个单向型式的阀件(12),以及适用于阻止产品颗粒通过的过滤器(17,170),其特征在于:所述过滤器(17,170)是选择型的,它允许具有单分子的气体通过,例如二氧化碳,氧气,氮气及甲烷气,而保留具有复杂分子链并由此较重的能产生产品香味的气体。
2.根据权利要求1的阀,其特征在于:所述选择过滤器是一种多孔分子筛。
3.根据权利要求1的阀,其特征在于:所述过滤器包括活性炭(21),且它可以与另外的酸性和/或碱性物质混合。
4.根据权利要求3的阀,其特征在于:所述活性炭(21)是天然型或植物型的。
5.根据权利要求3或4的阀,其特征在于:所述活性炭(21)包含在两层对立的多孔纸层(19,20)之间。
6.根据权利要求3或4的阀,其特征在于:所述活性炭与赋形剂,例如水及糖相混合,并散布在一层多孔纸层(171)上的一个或多个层(172)中。
7.根据上述权利要求中任一项的阀,其特征在于:所述过滤器(17,170)包含在所述阀体(5)中构成的空腔(16)中。
8.根据权利要求1的阀,其中所述阀体包括容纳所述过滤器(17,170)及设有孔(11,15)的反向盖(6)的一个基盘(5),并且所述阀件(12)是一个橡胶膜片,它通常压在盘(5)上用以封闭所述孔(11)。
9.根据上述权利要求中任一项的阀,其特征在于:该阀被安装在用于香味产品如咖啡及发出气味的类似产品的容器(1)的壁上。
10.根据权利要求9的阀,其特征在于:该阀被安装在用于封闭容器(1)的一个易拉片(2)上。
11.一种安装了设有选择过滤器的单向排气阀(4)的用于盛放发出香味气体的产品如咖啡的气密容器,该过滤器阻止了香气或气味的外逸。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT002721A/93 | 1993-12-23 | ||
IT93MI002721A IT1265433B1 (it) | 1993-12-23 | 1993-12-23 | Valvola di degasazione per prodotti aromatici, in particolare caffe' |
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CN1121892A true CN1121892A (zh) | 1996-05-08 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN94109037.XA Pending CN1121892A (zh) | 1993-12-23 | 1994-08-10 | 用于香味产品如咖啡及类似产品的排气阀 |
Country Status (9)
Country | Link |
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US (1) | US5515994A (zh) |
EP (1) | EP0659657B1 (zh) |
JP (1) | JPH07208626A (zh) |
CN (1) | CN1121892A (zh) |
AT (1) | ATE161792T1 (zh) |
BR (1) | BR9402274A (zh) |
CA (1) | CA2125998A1 (zh) |
DE (1) | DE69407745T2 (zh) |
IT (1) | IT1265433B1 (zh) |
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IT1319364B1 (it) * | 2000-12-06 | 2003-10-10 | Goglio Spa Luigi Milano | Valvola selettrice di degasazione per contenitori di prodottiaromatici o odorosi, quali caffe' e simili. |
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KR20020086397A (ko) * | 2002-10-16 | 2002-11-18 | 서주현 | 음식물 수납용 밀폐용기 |
DE10250318A1 (de) * | 2002-10-29 | 2004-05-19 | Robert Bosch Gmbh | Überdruckventil für einen Verpackungsbehälter |
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US7364048B2 (en) * | 2003-07-01 | 2008-04-29 | Dart Industries Inc. | Cheese server |
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-
1993
- 1993-12-23 IT IT93MI002721A patent/IT1265433B1/it active IP Right Grant
-
1994
- 1994-06-16 CA CA002125998A patent/CA2125998A1/en not_active Abandoned
- 1994-06-16 US US08/261,323 patent/US5515994A/en not_active Expired - Lifetime
- 1994-06-21 DE DE69407745T patent/DE69407745T2/de not_active Expired - Lifetime
- 1994-06-21 AT AT94109525T patent/ATE161792T1/de active
- 1994-06-21 EP EP94109525A patent/EP0659657B1/en not_active Expired - Lifetime
- 1994-07-13 BR BR9402274A patent/BR9402274A/pt not_active IP Right Cessation
- 1994-07-22 JP JP6170837A patent/JPH07208626A/ja active Pending
- 1994-08-10 CN CN94109037.XA patent/CN1121892A/zh active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102317175A (zh) * | 2009-02-12 | 2012-01-11 | 罗伯特·博世有限公司 | 尺寸小的过压阀 |
CN102317175B (zh) * | 2009-02-12 | 2014-06-25 | 罗伯特·博世有限公司 | 尺寸小的过压阀 |
CN106998800A (zh) * | 2014-10-16 | 2017-08-01 | R.J.雷诺兹烟草公司 | 具有阀组合件的用于含烟草材料的封装以及相关封装方法 |
CN106864973A (zh) * | 2016-08-08 | 2017-06-20 | 株式会社乐扣乐扣 | 食品容器 |
CN106864973B (zh) * | 2016-08-08 | 2020-07-14 | 株式会社乐扣乐扣 | 食品容器 |
CN110937250A (zh) * | 2018-09-25 | 2020-03-31 | 川本国际包装有限公司 | 自助式干燥食品保鲜排气袋结构 |
Also Published As
Publication number | Publication date |
---|---|
EP0659657A1 (en) | 1995-06-28 |
BR9402274A (pt) | 1995-09-12 |
ATE161792T1 (de) | 1998-01-15 |
JPH07208626A (ja) | 1995-08-11 |
CA2125998A1 (en) | 1995-06-24 |
ITMI932721A0 (it) | 1993-12-23 |
DE69407745T2 (de) | 1998-07-16 |
DE69407745D1 (de) | 1998-02-12 |
US5515994A (en) | 1996-05-14 |
IT1265433B1 (it) | 1996-11-22 |
EP0659657B1 (en) | 1998-01-07 |
ITMI932721A1 (it) | 1995-06-23 |
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