CN201777487U

CN201777487U - Valve port paper bag with double plastic membranes

Info

Publication number: CN201777487U
Application number: CN2010205655079U
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 a valve port paper bag with double plastic membranes. The valve port paper bag comprises an inner-layer paper bonding part, an outer-layer paper bonding part, a bag cylinder, a piece of outer-layer paper, a piece of inner-layer paper, a first plastic membrane overlapping part, a second plastic membrane overlapping part, a first plastic membrane and a second plastic membrane, wherein the first plastic membrane and the second plastic membrane are positioned between the outer-layer paper and the inner-layer paper, and are overlapped at the first plastic membrane overlapping part and at the second plastic membrane overlapping part; the inner-layer paper is arranged on the bonding edge of the inner-layer paper bonding part, and the outer-layer paper is arranged on the bonding edge of the outer-layer paper bonding part; the first plastic membrane overlapping part and the second plastic membrane overlapping part are arranged on two sides of the bag cylinder respectively; and the first plastic membrane overlapping part, the inner-layer paper bonding part and the outer-layer paper bonding part are arranged on the same side. Therefore, the requirements of air tightness and moisture protection are met after the material is filled into the valve port paper bag.

Description

Valve port paper bag with biplate plastic film

Technical field

The utility model relates to a kind of valve port paper bag, particularly a kind of valve port paper bag with biplate plastic film.

Background technology

At present, the valve port paper bag is widely used in the packing of powder body material, and particularly the valve port paper bag is after can, and outward appearance is square-folded, is all extremely convenient and safety of pile or transportation.But, along with powder body material grain size granular more and more, particularly numerous food product or food additives powder also generally use the valve port paper bag, and this just requires the valve port paper bag also moistureproof ability will be arranged, and traditional terms of settlement is the sandwich one deck plastic film at three layers or multi-layered paper.As shown in Figure 1, two-layer paper sandwich one deck plastic film also is rolled into tubular, constituted the bag tube 4 of valve port paper bag, the internal layer paper is in internal layer paper bonded part 1 bond edge, the interlayer plastic film is in interlayer plastic film bonded part 2 bond edge, and outer paper is in outer paper bonded part 3 bond edge.

As shown in Figure 2, the size of outer paper 5, interlayer plastic film 6, internal layer paper 7 is size equally, but three layers bonding position staggers, and each layer bonding firmly made valve port paper bag shown in Figure 3 according to the manufacturing process of valve port paper bag then.As shown in Figure 3, material is filled into the bag body 9 of valve port paper bag from pan feeding valve port 8.The internal layer paper is in internal layer paper bonded part 1 bond edge, and the interlayer plastic film is in interlayer plastic film bonded part 2 bond edge, and outer paper is in outer paper bonded part 3 bond edge.Damp-proof needs in the use have been satisfied in the airtight protection against the tide of whole bag body.But, when can, because the bag body of whole valve port paper bag is a fully enclosed, and the material during can is promoted by gas, contain a large amount of air in the material, these air have occupied a large amount of volumes, if continue material to be filled in the bag body of valve port paper bag, must discharge these gas in can, and the bag body of this kind conventional confguration is complete sealed air-tight, gas can oppositely be gone out along pan feeding valve port 8, wherein clip a large amount of materials, cause very difficulty of can,, also have the quick-fried danger of rising of bag body if when filling pressure is big.

The utility model content

Technical problem to be solved in the utility model provides a kind of valve port paper bag with biplate plastic film, it both can satisfy airtight after being filled into the valve port paper bag, the damp-proof needs of material, can solve the fully enclosed bag again when can contains the material of gas, rapidly gas be discharged the needs of bag body.

For solveing the technical problem, the utility model provides a kind of valve port paper bag with biplate plastic film, valve port paper bag with biplate plastic film comprises internal layer paper bonded part, the outer paper bonded part, the bag tube, outer paper, the internal layer paper, it is characterized in that, valve port paper bag with biplate plastic film also comprises the first plastic film overlapping part, the second plastic film overlapping part, first plastic film, second plastic film, first plastic film, second plastic film is between outer paper and internal layer paper, first plastic film, second plastic film is at the first plastic film overlapping part, the second plastic film overlapping part is overlapping, the internal layer paper is in internal layer paper bonded part bond edge, outer paper is in outer paper bonded part bond edge, the first plastic film overlapping part and the second plastic film overlapping part be respectively in the both sides of bag tube, the first plastic film overlapping part, internal layer paper bonded part and outer paper bonded part are in the same side.

Positive progressive effect of the present utility model is: one, the utility model has been broken the plastic film bonding ability fully enclosed traditional idea that presss from both sides between the paper, facts have proved that anti-soak properties are still good when non-caked; Two, the utility model has been broken the paper traditional idea identical with the plastic film apparent size of interlayer of bag tube, adopts two overlapping overlap joints of plastic film to form.

Description of drawings

Fig. 1 is the structural representation of bag tube in the existing valve port paper bag.

Fig. 2 is the structural representation of each ATM layer relationsATM in the existing valve port paper bag.

Fig. 3 is the structural representation of existing valve port paper bag.

Fig. 4 is the structural representation of bag tube in the utility model valve port paper bag.

Fig. 5 is the structural representation of each ATM layer relationsATM in the utility model valve port paper bag.

Fig. 6 is the structural representation that the utlity model has the valve port paper bag of biplate plastic film.

The specific embodiment

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

Extremely shown in Figure 6 as Fig. 4, the valve port paper bag that the utlity model has the biplate plastic film comprises internal layer paper bonded part 11, the first plastic film overlapping part 121, the second plastic film overlapping part 122, outer paper bonded part 13, bag tube 14, outer paper 15, first plastic film 161, second plastic film 162, internal layer paper 17, pan feeding valve port 18 and bag body 19, first plastic film 161, second plastic film 162 is between outer paper 15 and internal layer paper 17, first plastic film 161, second plastic film 162 is at the first plastic film overlapping part 121, the second plastic film overlapping part 122 is overlapping but non-caked, first plastic film 161, second plastic film 162 is identical with existing interlayer plastic film, internal layer paper 17 is in internal layer paper bonded part 11 bond edge, outer paper 15 is in outer paper bonded part 13 bond edge, internal layer paper 17 and outer paper 15 clip two plastic films and are rolled into tubular and formed bag tube 14, the first plastic film overlapping part 121 and the second plastic film overlapping part 122 be respectively in the both sides of bag tube 4, the first plastic film overlapping part 121, internal layer paper bonded part 11 and outer paper bonded part 13 are in the same side.Pan feeding valve port 18 is positioned at the top of bag body 19.

When material is filled into the bag body 19 of valve port paper bag from pan feeding valve port 18, material is blown into together with the gas that promotes material, at this moment, pressure in the bag body is greater than atmosphere outside pressure, gas passes the fiber of internal layer paper, enter between internal layer paper and the interlayer plastic film, gas does not have bonded assembly position to excrete between interlayer plastic film and the outer paper along the first plastic film overlapping part and these two of the second plastic film overlapping parts, continue across the fiber of outer field paper then, be discharged to the outside of bag body 19, gas and material can oppositely not gone out from pan feeding valve port 18.After the material can finishes, bag body 19 pressure inside are identical with external pressure, simultaneously the first plastic film overlapping part and the second plastic film overlapping part also have been in the nature closure state, exterior moisture can not reverse osmosis under normal pressure in bag body 19, thereby reached airtight damp-proof needs.

Technical characterstic of the present utility model is: one, the utility model has been broken the plastic film bonding ability fully enclosed traditional idea that presss from both sides between the paper, facts have proved that anti-soak properties are still good when non-caked; Two, the utility model has been broken the paper traditional idea identical with the plastic film apparent size of interlayer of bag tube, adopts two overlapping overlap joints of plastic film to form.

The valve port paper bag will have the requirement of exhaust capacity when the utility model perfection had solved the can material, the damp-proof requirement of material when also having solved simultaneously the transportation storage.

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. valve port paper bag with biplate plastic film, valve port paper bag with biplate plastic film comprises internal layer paper bonded part, the outer paper bonded part, the bag tube, outer paper, the internal layer paper, it is characterized in that, valve port paper bag with biplate plastic film also comprises the first plastic film overlapping part, the second plastic film overlapping part, first plastic film, second plastic film, first plastic film, second plastic film is between outer paper and internal layer paper, first plastic film, second plastic film is at the first plastic film overlapping part, the second plastic film overlapping part is overlapping, the internal layer paper is in internal layer paper bonded part bond edge, outer paper is in outer paper bonded part bond edge, the first plastic film overlapping part and the second plastic film overlapping part be respectively in the both sides of bag tube, the first plastic film overlapping part, internal layer paper bonded part and outer paper bonded part are in the same side.