CN201777483U

CN201777483U - Open square-bottomed paper bag with cylindrical plastic film

Info

Publication number: CN201777483U
Application number: CN2010205650959U
Authority: CN
Inventors: 陈安康
Original assignee: SHANGHAI AILU PAPER PACKAGE CO Ltd
Current assignee: Shanghai Ailu Package Co., Ltd.
Priority date: 2010-10-18
Filing date: 2010-10-18
Publication date: 2011-03-30
Anticipated expiration: 2020-10-18

Abstract

The utility model discloses an open square-bottomed paper bag with a cylindrical plastic film, which comprises an outer paper layer, an inner paper layer and the cylindrical plastic film, wherein the Z-shaped cylindrical plastic film is arranged in the inner paper layer, and the inner paper layer is arranged in the outer paper layer. The open square-bottomed paper bag solves the problem of packaging failures such as easy stretching of a plastic film in an original paper bag, easy tearing of glue for gluing a plastic film at a square-bottomed bag opening or a square-bottomed bag bottom with paper and the like.

Description

Opening side's base stock bag with tubular plastic film

Technical field

The utility model relates to the packaging bag field, particularly a kind of opening side's base stock bag with tubular plastic film.

Background technology

At present, the majority that the granular material packaging bag is used is the granule materials of opening paper bag, especially lenticular, and other packaging bag is all inapplicable.But if simple opening paper bag, behind the filling material, the shape of bag is pointed at both ends, be not suitable for very much pile and transportation, so opening side's base stock bag just is widely used and comes, along with hygienic requirements is more and more higher, most opening bag with square bottom all is required to place a plastic bag in the middle of bag, take place to avoid material to contact rough sledding such as the back moisture absorption, taint of odour, pollution with paper

As depicted in figs. 1 and 2, outer paper 1 and internal layer paper 2 are rolled into tubular, wherein outer paper 1 in the outer paper bonding part 4 the bonding paper edges, internal layer paper 2 in internal layer paper bonding part 5 the bonding paper edges.Tubular plastic film 3 and internal layer paper 2 are firm by assembly glue 6 bondings, and tubular plastic film 3 is open and flat shape, and outer paper 1 and internal layer paper 2 are also by assembly glue 6 bondings firmly.The bottom of paper bag in-to-in tubular plastic film 3 is sealed into plastic bag in tubular plastic film hot pick place 8 by the heating device hot pick.

As shown in Figure 3, the bottom of bag body 9 is converted into as shown in the figure hexagon, and will apply glue around tubular plastic film hot pick place 8 among Fig. 2, to seal one side that one tubular plastic film is bonded in bag body 9 at the tubular plastic film with paper bonding part 10, on the hexagon of bottom, smear the bonding glue 11 of upper bottom portion moulding, along bottom moulding fold line 7 folded, glued, make opening side's base stock bag at last.

As Fig. 2 and shown in Figure 4, after the granular material filling enters in bag body, just hotly join the oral area that line 8 hotly joins the in-to-in plastic bag along the inside cylindrical plastic film, two of in-to-in tubular plastic film is seated in the plastic bag with regard to complete closed streams closed like this.Along oral area lignilite 12 sack is sewed up at last, simultaneously, also open from allowing at the bag end 13 of opening bag with square bottom, and whole bag body is cuboid, is easy to pile, storage and transportation.

But, in the existing opening bag with square bottom problem is arranged, because the shape randomness of the tubular plastic film of internal layer, be difficult to be folded into square as exterior two-layer paper, having rolled over also can resilience, so, only be bonded to squarely with exterior paper is folding, and in-to-in tubular plastic film is the pointed shape plastic bag after the hot pick, in the time of at the bottom of the material filling enters into bag, exterior paper nature flare up is square, and in-to-in tubular plastic film still is the shape of tip, and the gravity of the material big plastic bag that can further rise makes in-to-in tubular plastic film modification, stretch, tear off the internal layer paper sometimes with the assembly glue between the tubular plastic film, cause filling failure, sometimes, plastic film has been stretched bad also not know, cause the pollution of material, make moist, influence the quality of material.

The utility model content

Technical problem to be solved in the utility model provides a kind of opening side's base stock bag with tubular plastic film, and it has solved, and plastic film is stretched easily in the original paper bag, bag with square bottom oral area or bag with square bottom bottom plastic film be with the problem of packing failures such as the bonded assembly glue of paper pulls bad easily.

For solveing the technical problem, the utility model provides a kind of opening side's base stock bag with tubular plastic film, it comprises outer paper, internal layer paper, tubular plastic film, the tubular plastic film is in the internal layer paper, the internal layer paper is in outer paper, it is characterized in that the tubular plastic film is the zigzag shape.

Positive progressive effect of the present utility model is: the filling that the utility model had both kept original opening bag with square bottom easily, filling back shape Founder, be easy to pile and storage, the airtight protection of inner plastic film, material do not make moist, the advantage of not taint of odour, solved again that plastic film is stretched easily in the original structure, bag with square bottom oral area or bag with square bottom bottom plastic film be with the situation of packing failures such as the bonded assembly glue of paper pulls bad easily.

Description of drawings

Fig. 1 is the structural representation of existing opening side each layer of base stock bag when vertical.

Fig. 2 is the structural representation of existing opening side base stock bag middle cylinder body.

Fig. 3 is the structural representation of bottom in the existing opening side base stock bag.

Structural representation when Fig. 4 uses for existing opening side base stock bag.

Fig. 5 is the structural representation of the utility model opening side each layer of base stock bag laterally the time.

The specific embodiment

Lift a preferred embodiment below, and come the clearer the utility model that intactly illustrates in conjunction with the accompanying drawings.

The opening side's base stock bag and the existing opening side base stock bag that the utlity model has the tubular plastic film are basic identical, promptly all comprise outer paper, the internal layer paper, the tubular plastic film, the outer paper bonding part, internal layer paper bonding part, assembly glue, the bottom fold line, hot pick place of tubular plastic film, the bag body, the tubular plastic film is with the paper bonding part, the bonding glue of bottom moulding, the oral area lignilite, the bag end, both are difference, as shown in Figure 5, to change over the tubular plastic film 23 that is the zigzag shape by the tubular plastic film of original open and flat shape, the tubular plastic film 23 of zigzag shape is in internal layer paper 2, and internal layer paper 2 is in outer paper 1.

In the middle of outer paper 1 and the internal layer paper 2 the tubular plastic film that is the zigzag shape is arranged, the bottom hot pick of this tubular plastic film infraoral, form plastic bag, this plastic bag together with bag at the bottom of moulding and fixing, in the time of at the bottom of the material filling enters bag, open naturally at the bag end, at this moment, the folding part that is the tubular plastic film of zigzag shape is also drawn back, and is close to outer field paper, the tubular plastic film just can not be stretched the bad modification of the tubular plastic film of avoiding like this.After the material filling finishes; by heating hot pick equipment that the oral area hot pick of tubular plastic film is good; at last; seal along the sewing of oral area lignilite with sewing device; sack inside just forms the plastic bag of a complete closed like this; exterior paper is sewed up the back and is provided sufficient intensity to sack, and material is protected by perfection.Like this; the filling that the utility model had both kept original opening bag with square bottom easily, filling back shape Founder, be easy to pile and storage, the airtight protection of inner plastic film, material do not make moist, the advantage of not taint of odour, solved again that plastic film is stretched easily in the original structure, bag with square bottom oral area or bag with square bottom bottom plastic film be with the situation of packing failures such as the bonded assembly glue of paper pulls bad easily.

Though more than described the specific embodiment of the present utility model, but those skilled in the art is to be understood that, these only are casehistorys, under the prerequisite that does not deviate from principle of the present utility model and essence, can make numerous variations or modification to these embodiments.Therefore, protection domain of the present utility model is limited by appended claims.

Claims

1. opening side's base stock bag with tubular plastic film, it comprises outer paper, internal layer paper, tubular plastic film, and the tubular plastic film is in the internal layer paper, and the internal layer paper is characterized in that in outer paper the tubular plastic film is the zigzag shape.