CN2803956Y - Multi-stair sealed packing sack - Google Patents

Abstract

The utility model relates to a multi-step sealed packing bag which uses bag layers as the base, wherein a covering tongue at the sealing point of each layer presents a step shape; from the surface of one side of the bag, the covering tongue at the inner side of a paper layer is in the initial stage, then, the secondary surface layer is contracted inwards to be reduced together with a lining layer to form a step type, and in the same way, inner layers are processed until an inner liner layer which reaches an inner liner layer at the other side via an inner cavity of the bag; covering tongue steps of equal heights are arranged among the inner liner layers; then, at the other side of the bag, the lining layer which is arranged at the outer side of the bag, the inner layers, the lining layer and the secondary surface layer are reduced layer by layer from inside to outside by using the bag layers as the stage, and finally to the surface of the other side of the bag to form step-shaped degression. The utility model which uses the covering tongue to glue and seal enhances the sealing strength of a bag opening and avoids the problem of leakage caused by a needle sewed sealed opening when the bag is filled with powdery materials.

Description

The packaging bag that a kind of multistage ladder type is sealed

Technical field

The utility model relates to a kind of be used for the multi-layer packaging bag that the flowing power solid material is stored or transported, the packaging bag that specifically a kind of many paper staged is sealed.

Background technology

At present, no matter the packaging bag of laminated paper is cement package bags, or chemical or other flowing power solid material packaging bags, and it seals and mostly is eedle linear slit structure.This structure so this paper bag intensity of sealing is weakened greatly, is carried bag when holding in one's ear when its carrying is carried because sealing is a suture pin hole solid matter, very easily appears at pin seam sealing part and is torn out, and causes unnecessary loss.And pin hole seals greater than linear slit, has slot to occur behind the stitch hole of tying tight, closes to seal to be difficult to ensure its leak tightness: during the material flour stored in the bag first or dress powder when closing material, leak out easily and may pollute environment; Second the external pollution material with might enter into a bag interior material, even produce unnecessary chemical reaction, cause a bag interior material to pollute, going bad causes damage.

Summary of the invention

The purpose of this utility model is the weak point for fear of above-mentioned technology, and the packaging bag that provides a kind of multistage ladder type to seal.

The purpose of this utility model is achieved in that the packaging bag that a kind of multistage ladder type is sealed, and adopts glue package pack flap to seal, and it is characterized in that the packaging bag enclosing of laminated paper, is based on the bag layer, and the flap of its each layer sealing part is stepped appearance; Start from level cascaded surface 6 headed by the 1 inboard flap of the positive top layer of bag one side; Constitute secondary cascaded surface 7 by paper, the inferior top layer 2 of moulding composite bed with lining 3 inboard flaps; By paper, mould composite bed as nexine again to bladder layer 4 just behind bag inner chamber 5 (charge material chamber), the opposite side that leads to bag to its paper, the inner bag outside of moulding composite bed constitutes three grades of cascaded surfaces 8, the outside on lining 3 and time top layer 2 constitutes level Four cascaded surface 9, reach the outside face 10 of the in addition side of packaging bag again, integral structure be successively decrease, in contract to constitute and be stepped appearance; Its width of each cascaded surface (every layer flap) can be to equate or unequal, and the rising of cascaded surface can be single ply of paper, and many ply of papers, are moulded composite bed at paper, or single ply of paper and paper, moulds composite bed, or many ply of papers and paper, moulds being arranged to form of composite bed.The two-layer above person layered structure that need be bonded into one therebetween, as the sticking face of the subsides of sealing, and the end top line K of sealing part closes up fold line as the laminated paper cascaded surface, promptly seals starting line with the surface 10 at the bag back side.Sealing at the bottom of the bag of the utility model can be adopted and obtained Patent right " multiwall kraft packaging bag " version (ZL98218492.1).

The utility model with the advantage that the existing product technology is compared is: owing to be the gluing bonding structure of laminated paper staged table top, the good airproof performance that seals is avoided polluting because of sealing difference; The face (flap) of laminated paper staged face seals participates in comprehensive stickup, has improved the sealing strength that bag seals greatly, through sealing contrast carrying bin stock bag with guiding principle needlework seam, does not then find to put forward sack or the seal failure problem of tearing of carrying.

Description of drawings

Fig. 1 is the utility model bag back side overview.

Fig. 2 is the cutaway view at the N-N position of Fig. 1.

Among the figure: 1, bag positive top layer 2, inferior top layer 3, lining 4, bladder layer 5, bag inner chamber 6, chopped-off head cascaded surface 7, secondary cascaded surface 8, three grades of cascaded surfaces 9, level Four cascaded surface 10, bag back surface layer

The specific embodiment

Referring to Fig. 1,2, a kind of multistage ladder type seal package bag, the encapsulating structure at the bottom of the bag of this packaging bag are to adopt " multiwall kraft packaging bag (ZL98218492.1) patent.In embodiment of the present utility model; select a kind of version of four layers of paper bag for use; wherein lining 3 is composite beds of paper composite hot melt glue face; in order to moistureproof, heat insulation reinforcement protection to the material of adorning in the bag chamber; bladder layer 4 be at the bottom of the paper with the laminating material film of melt viscosity, be the material of direct contact pack.The stepped appearance face starts from the inboard on the positive top layer 1 of bag, and the intercepting certain width constitutes chopped-off head cascaded surface 6; In like manner, be the unit with the bag layer substantially thereupon, the form of doing to successively decrease, formation laminated paper stepped shape are merged into ladder rising section by inferior top layer 2 and lining 3 successively and are constituted secondary cascaded surface 7 by lining 3 inboard flaps; Stride across bag inner chamber 5 by bone courage layer 4 again, to the bladder layer of the bag back of the body one side on opposite, the lateral surface (the flap outside) that intercepts behind its width constitutes three grades of cascaded surfaces 8; Equally, the lining 3 of carrying on the back a side by bag constitutes level Four cascaded surface 9 with the outside on time top layer 2; Bag back surface layer outside face 10 is the faces of being stuck, and its sealing end limit is fold closure line K.After in the bag chamber, installing material, adopt glue package pack flap to seal, on the Duo Cengshi cascaded surface, be coated with this glue of sealing and do not pollute, do not need to handle, only need fold, close folding with fold closure line K and be attached to push on 10 the face and get final product in the gluing thing with extraordinary.

Claims (4)

1, a kind of multistage ladder type packaging bag of sealing adopts glue package pack flap to seal, and it is characterized in that: the packaging bag enclosing of laminated paper, and the flap of its each layer sealing part is stepped appearance; Level cascaded surface (6) headed by the inboard flap in the positive top layer (1) of one side of bag; Paper is arranged, mould the inferior top layer (2) of composite bed formation and the secondary cascaded surface (7) of the inboard flap formation of lining (3); By paper, mould nexine that composite bed constitutes or bladder layer (4), constitute three grades of cascaded surfaces (8) through bag chamber (5) and opposite side paper, the bladder layer outside of moulding composite bed; The outside on lining (3) and time top layer (2) constitutes level Four cascaded surface (9), and the back side outside face (10) of packaging bag, integral structure are to successively decrease to be stepped appearance; The width of each cascaded surface flap is equal, and the surface (10) at the bag back side has the sticking face of the subsides of sealing, and has at sealing part and to close up folding end top line K.

2, a kind of multistage ladder type according to claim 1 packaging bag of sealing, it is characterized in that: the width of each cascaded surface flap can be unequal.

3, a kind of multistage ladder type according to claim 2 packaging bag of sealing is characterized in that: the rising of cascaded surface can be single ply of paper of bag, many ply of papers, or paper, mould being arranged to form of composite bed.

4, a kind of multistage ladder type according to claim 3 packaging bag of sealing is characterized in that: the two-layer above person layered structure that need be bonded into one therebetween.