CN2226025Y - Double-layered sealed packaging bag - Google Patents

Abstract

The utility model relates to a sealed packaging bag, particularly a double-layered sealed packaging bag which can be used many times. The utility model is characterized in that the bag body (4) of a packaging bag made of the flexible plastic is provided with two sealed strips; a first sealed strip (2) is glued tightly in the thermal pressure mode; the sealed performance is good. The utility model can pack the liquid, the solid and the powder-shaped object and can seal and store objects for a long time. When the user takes the object, the first sealed strip can be tore or tore off by using the slight force. The remanent objects are sealed by depending on a second sealed strip. The second sealed strip (1) is a finger press type lock crossed strip or a drag chain, is capable of opening and closing freely and is repeatedly used many times. The utility model is particularly suitable for the packaging bags for packing the objects which are not used once, the chemical industry concerned with products for daily use and others objects.

Description

The double-layer seal packaging bag

The utility model relates to a kind of sealing bags, the nonexpondable double-layer seal packaging bag of particularly a kind of energy.

Existing nonrigid plastic packaging bag, its periphery forms through heat pressure adhesive, good seal performance, but can only disposablely use, tear its sealing property of back and promptly go to pot; Other has a kind of left side, the right and base of packing bag to form through heat pressure adhesive, opening is left at the top, opening part is connected with pressure-sensitive gummed paper or sealed band of finger-pressure type or slide fastener, can make things convenient for folding, repeated use, but its sealing property is relatively poor, and gas, the equal easy to leak of liquid can not be packed food that must be fresh-keeping and article and the powder that contains liquid.

The purpose of this utility model is to overcome the weak point of above-mentioned existing packaging bag and a kind of good seal performance is provided, and prevents seepage and the double-layer seal packaging bag of can repeated multiple times using.

The purpose of this utility model can reach by following measure: the nonrigid plastic diaphragm is through the synthetic airtight container of thermocompression bonded, it is characterized in that being provided with on the bag the linear sealing band in two roads, first sealing band is in the bag the inside, also can be at the top of bag, form through heat pressure adhesive, second sealing band is on the top of bag, and it is sealed band of a kind of finger-pressure type or slide fastener.First sealing band needs an additional layer thickness to only reach the plastic sheeting of bag thickness 1/3rd to 1/2nd when the bag the inside, and its periphery forms through heat pressure adhesive; When first sealing band during at the bag top, directly form by the bag heat pressure adhesive, simultaneously at the two ends of first sealing band, leave one or two leg-of-mutton tearing ports; The end of bag, all can make linear, circular or other geometric figure.

The accompanying drawing drawing is described as follows:

Fig. 1-1 is a square package bag front elevation;

Fig. 1-2 is a square package bag generalized section;

Fig. 2-1 is a round bottom shape packaging bag front elevation;

Fig. 2-2 is a round bottom shape packaging bag generalized section;

Fig. 3-1 is a closedtop formula square package bag front elevation;

Fig. 3-2 is a closedtop formula square package bag generalized section;

Fig. 4-1 is that the sealed band of finger-pressure type double track is opened scheme drawing;

Fig. 4-2 is the closed scheme drawing of the sealed band of finger-pressure type double track.

Embodiment of the present utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1-1 and Fig. 1-2 are the front elevation and the generalized section of square package bag, bag 4 is the tubular Plastic Parts, there is hot sealing band 5 on the base, top is connected with second sealing band 1, second sealing band 1 is the sealed band of finger-pressure type double track, sealed band of also available single track or slide fastener, the repeatedly folding repeatedly of this sealed band or slide fastener.First sealing band 2 is in bag 4 the insides; by plastic sheeting 3 heat pressure adhesives; its periphery also with bag 4 heat pressure adhesives; form an airtight container; plastic sheeting 3 thick wide thinner; only reach 1/3rd to 1/2nd of bag 4 thickness; a little firmly can tear, but plastic sheeting 3 is subjected to the protection of bag 4, not cracky before tearing; be convenient to the article long preservation; after destroy first sealing band 2, the taking-up internal tank divided article, remaining article relied on second sealing band 1 to seal; second sealing band 1 can free folding, thereby reaches repeatedly the purpose of repeated use.

Fig. 2-1 and Fig. 2-2 is the front elevation and the generalized section of circular packaging bag, and its structure and principle of work are same as the previously described embodiments, and just the bottom of bag 4 is bonded into circle, or other geometric figure.

Fig. 3-1 and Fig. 3-2 is closedtop formula packaging bag front elevation and generalized section, its structure and principle of work are similar to the aforementioned embodiment, just first sealing band 2 is not in the inside of bag 4, and at the top of bag 4, directly form through heat pressure adhesive, but one or two tearing port 6 is arranged, can tear first sealing band 2 easily off along tearing port 6 during use at the two ends of first sealing band 2 by bag 4, keep second sealing band 1, can reach not only long term seal but also the repeatedly purpose of repeated use equally.The bottom of bag 4 can be made wire, circle or other geometric configuration equally.

The utlity model has the double-layer seal packing, first sealing band is the plastics heat pressure adhesive, and good seal performance can be packed various solids, liquid, powder, is convenient to long term seal and preserves.After first sealing band is opened, second sealing band still can seal preservation to remaining article, and repeated use repeatedly, use until exhausted up to article, so the utility model is particularly suitable for packing food, daily-use chemical industry articles for use and some other article that some non-onces use up.

Claims (6)

1. double-layer seal packaging bag, it is with the airtight container of nonrigid plastic diaphragm through heat pressure adhesive, it is characterized in that: the linear sealing band in two roads is set on the bag (4), first sealing band (2) is in the inside of bag (4), also can be at the top of bag (4), form through heat pressure adhesive, second sealing band (1) is on the top of bag (4), and it is sealed band of a kind of finger-pressure type or slide fastener.

2. packaging bag according to claim 1 is characterized in that first sealing band (2) is in bag (4) the inside, formed through heat pressure adhesive by plastic sheeting (3), and another periphery of plastic sheeting (3) also forms through heat pressure adhesive with bag (4).

3. packaging bag according to claim 1 and 2 is characterized in that the thickness of plastic sheeting (3) only reaches 1/3rd to 1/2nd of bag thickness.

4. packaging bag according to claim 1, the bottom that it is characterized in that bag (4) are linear or circular or other geometric figure.

5. packaging bag according to claim 1 is characterized in that first sealing band (2) also can be placed in the top of second sealing band (1) or the top of bag (4), is bonded by the direct hot pressing of bag (4).

6. packaging bag according to claim 1 or 5 is characterized in that there are one or two tearing ports (6) in the two ends of first sealing band (2).

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