CN1045074C - 形成真空包装物品袋的管状元件 - Google Patents

形成真空包装物品袋的管状元件 Download PDF

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CN1045074C
CN1045074C CN94112834A CN94112834A CN1045074C CN 1045074 C CN1045074 C CN 1045074C CN 94112834 A CN94112834 A CN 94112834A CN 94112834 A CN94112834 A CN 94112834A CN 1045074 C CN1045074 C CN 1045074C
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卢吉·阿巴特
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Flaem Nuova SpA
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Abstract

本发明涉及构成真空包装物品的包装袋的管状元件，它包括带有线状元件(15)的内层或薄片(14)，线状元件沿管状元件的长度延伸，并明显地安设在成品包装袋的至少一个内表面上，并在线状元件之间限定沟槽(16)，以便在采用真空包装物品的包装袋时利用抽吸作用从袋中抽出空气。

Description

形成真空包装物品袋的管状元件
本发明涉及包装材料，特别是涉及形成包装袋的元件，该包装袋是不能渗透但可热封合的。并且可用于真空包装易腐产品。
管状元件中的包装材料；利用粘接剂在纵向进行封合，可形成用于上述目的的包装袋。这种包装材料，业已提出。根据已知的实例，管状元件的壁面上至少有两个搭接的元件，这些元件由不同材料制作，外层或薄片由不透气的材料制成，内层或薄片由热塑性的可热封合的材料制成。将这两层材料紧密地搭接，至少内层有形成槽沟的凸起物或网状物，当袋子用于真空包装时，这些凸起物或网状物促使空气排出。因此，在元件的热封合内层有沟槽网状物。
类似的包装材料在美国专利5,234,731和2,778,173中已公开。美国专利5,234,731公开了一种包装材料，它包括内外二层热塑性材料。而，173号中公开了一种由内外二层材料形成的包装材料，在内层的内表面上制有凸起物和网状物，以利于在真空包装时排出空气。
本发明的目的是提供一种具有壁的包装材料，该壁是由不同的塑料制成的两层或多层或薄片，并且具有恒定的不渗透性和热封合性。用作排气的沟槽由线状元件确定，线状元件至少设置在包装材料的一个内表面上。因此，可取消压制凸起物的工序，从而使真空包装袋的生产更加简单和经济，而且使用可靠。
根据本发明，形成真空包装物品包装袋的管状元件由至少一个初始片材形成，所述片材包括由不透气的塑料材料制成的外层或薄片，以及热塑性的可热封合的材料制成的内层或薄片，所述的内、外层紧密相连，在内层的内表面上设置有线状元件，所述的片板在上、下两边缘相互联接，以形成可切割成所需长度的管状元件，所述的线状元件沿管状元件的长度方向延伸，即基本上相互平行于上下边缘延伸，从而在线状元件之间限定出在真空包装时抽气的沟槽。
根据本发明的管状元件，所述的外层或薄片由尼龙或聚酯材料制成，而内层或薄片由聚乙烯材料制成，所述的线状元件采用与内层或薄片相同的材料制成。
从下面参照附图的描述中，本发明的详细内容将更加清楚。其中：
图1表示形成真空包装物品的包装袋的管状元件截面立体图；
图2表示图1所述管状元件放大的截面图；
图3表示管状元件内表面的局部视图，在元件上有明显的线状元件限制的沟槽。
一般情况下，在描述时，代号10指管状元件整体，它由一层或两层片材或带材构成，利用粘接剂沿一侧或两侧纵向封合，如11所示。在实施例中，管状元件包括两层片材或带材12、12′，沿两对边进行封合。然后将管状元件切割成所需长度，在使用时，装入被包装的物品，并抽成真空以后，在成形包装袋的一端与其对置的另一端，用粘接剂在横截面方向封合。
构成管状元件并同时形成成品袋的一片材或多片材由外层或薄片13组成，外层13用尼龙或聚酯材料制作，片材是气密性的也就是说是不能渗透气体而且是可热封合的，其材料如聚乙烯。将两层薄片13、14进行重叠并紧密连接。
按照本发明，沿片材固有长度延伸的线状元件15至少安排在片材12、12′之一的内表面，如附图中安排在12的内表面，更精确的说是安排在聚乙烯内层或薄片14的内层上。最好在两片材12、12′组装以前，为构成管状元件并随后形成包装袋，线状元件15至少安排在片材12上。线状元件15最好由与构成内层或薄片14相同的材料，如聚乙烯制作。线状元件以适宜的方式嵌入，以致其明显地设置在管状元件10并最终构成包装袋的内表面上。
附图中已阐明本发明的实施例，从附图中可确定(图1和2)线状元件是怎样限定在管状元件，并最终构成包装袋的内表面上的。纵向沟槽16用抽吸方式在采用真空包装物品的包装袋时，从袋中完全抽空空气，采用的设备本身是已知的。

Claims (2)

1．形成真空包装物品包装袋的管状元件，该管状元件由至少一个初始片材(12,12′)形成，所述片材包括由不透气的塑料材料制成的外层或薄片(13)，以及热塑性的可热封合的材料制成的内层或薄片(14)，所述的内、外层紧密相连，在内层的内表面上设置有线状元件(15)，其特征是所述的片材(12,12′)在上、下两边缘(11,11)相互联接，以形成可切割成所需长度的管状元件，所述的线状元件(15)沿管状元件的长度方向延伸，即基本上相互平行于上下边缘(11,11)延伸，从而在线状元件(15)之间限定出在真空包装时抽气的沟槽(16)。
2．如权利要求1所述的管状元件，其特征是所述的外层或薄片(13)由尼龙或聚酯材料制成，而内层或薄片(14)由聚乙烯材料制成，所述的线状元件(15)采用与内层或薄片(14)相同的材料制成。
CN94112834A 1993-10-13 1994-10-12 形成真空包装物品袋的管状元件 Expired - Fee Related CN1045074C (zh)

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IT000074U/93 1993-10-13
IT93BS000074U IT231279Y1 (it) 1993-10-13 1993-10-13 Elemento tubolare per la formazione di sacchetti per il confezionamento di prodotti sottovuoto

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JP (1) JPH07251472A (zh)
KR (1) KR200248033Y1 (zh)
CN (1) CN1045074C (zh)
AT (1) ATE169586T1 (zh)
AU (1) AU687868B2 (zh)
CA (1) CA2118084C (zh)
DE (1) DE69412412T2 (zh)
DK (1) DK0648688T3 (zh)
ES (1) ES2122216T3 (zh)
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Also Published As

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AU7576394A (en) 1995-05-04
EP0648688B1 (en) 1998-08-12
CN1112507A (zh) 1995-11-29
DE69412412D1 (de) 1998-09-17
SI0648688T1 (en) 2000-02-29
ATE169586T1 (de) 1998-08-15
KR950011497U (ko) 1995-05-16
CA2118084C (en) 2005-06-28
EP0648688A2 (en) 1995-04-19
ITBS930074U1 (it) 1995-04-13
KR200248033Y1 (ko) 2002-07-31
EP0648688A3 (en) 1995-06-21
DE69412412T2 (de) 1999-03-25
JPH07251472A (ja) 1995-10-03
ITBS930074V0 (it) 1993-10-13
CA2118084A1 (en) 1995-04-14
ES2122216T3 (es) 1998-12-16
US5554423A (en) 1996-09-10
US5549944A (en) 1996-08-27
DK0648688T3 (da) 1999-05-17
IT231279Y1 (it) 1999-08-02
AU687868B2 (en) 1998-03-05

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