CN2353670Y - High-strength easy-to-stirp leak-proof light single-layer package bag - Google Patents

Abstract

The utility model relates to a package bag with a special structure. The utility model is formed by hot-press compounding of two layers of kraft paper and a kind of special yarn using adhesives; the special yarn which can be woven into a net shape and be dissolved with paper is sandwiched between the two layers of kraft paper. The utility model is characterized in that four corners are respectively provided with a piece of anti-leak hot melt film; nonstick organic film is coated on the inner surface of the packaging bag. Thereby, the composite type package bag with a single layer structure has the advantages of light self weight, high mechanical strength, no leakage, easy stripping, low cost, no slippery stack, no environmental pollution caused by reutilization, etc. The utility model is suitable for packaging, storing and transporting tacky amorphous substances and various other substances, such as asphalt, rosin, paraffin, cereals and fertilizer.

Description

High strength easy is peeled off non-leakage lightweight monolayer package bag

The utility model relates to a kind of packing of special construction.

Early stage asphalt packaging bag is to adopt multiwall kraft to make, because mechanical strength is not high enough, usually causes paper bag to break in the storage and transport process; Pitch is normal to stick together with bag paper, is difficult to peel off; Once weight, the easy seepage in bag angle.Many improvement have been done both at home and abroad at the problems referred to above.In recent years, Chinese patent (application number: 92219825X) introduced four layers of asphalt packaging bag that composite material is made of a kind of use, it is between two-layer craft paper, adopt glue bond to strengthen the knitmesh muscle and increase mechanical strength, coat organic film at the inner layer surface of bag and solve not bone pitch, but unresolved seepage disadvantage.Nineteen ninety-five, Chinese patent (application number: 951029606) adopt modified polypropene to make the soft package of pitch bag.The patent that also has (application number: 951113712) skin of introducing bag is plastic knitting or hard ply of paper, and internal layer is plastics, but the also seepage of unresolved packaging bag.

1997, our company has applied for the non-leakage peelable packaging bag of a kind of high-temp liquid, the application number of Chinese patent is: 972293205, the skin of this packaging bag is composited with craft paper and plastic knit-weaving fabric heat, interlayer is a craft paper, scribble a kind of antiseized organosilicon membrane on the internal layer paper, maximum constructional feature is at the place, M limit, four angles of packaging bag one block length, 1.0～10.0cm, the hot-melt film of wide 0.5～6.5cm to be arranged all.The hot-melt film at four angles through elevated temperature heat is compound shut packaging bag after, materials such as pitch can guarantee in storage and transport process, and are folded high 20 layers, bear 1.5～2.5 tons/meter 2 pressure, none seepage of packaging bag, material is very easily peeled off.

In sum, though various asphalt packaging bag has solved problems such as anti-breaking, easily peel off, be non-leakage, also have multiple-structure, packaging bag is heavier, the more high shortcoming of cost.

For the structure of simplifying packaging bag, alleviate the own wt of bag, increase the mechanical strength of bag, reduce production costs, manufacture and design non-leakage, easily peel off, the monolayer package bag that bag is light becomes purpose to be solved in the utility model.

Packaging bag of the present utility model is the composite single layer structure, and it is a kind ofly to be woven into nettedly by accompanying in the middle of the two-layer craft paper, can be composited through adhesives hot pressing with the dissolved special yarn of paper, forms an integral body of single layer structure.Special yarn band glue in this packing, parallel is arrangement in parallel linearly, and warp assumes diamond in shape and parallel is woven into gauze, has increased the mechanical strength (seeing accompanying drawing 1) of packaging bag.Scribble the organic film of one deck on the inside face of packaging bag, prevent and the material adhesion, peel off easily.The outside face of packaging bag makes it uneven because of the yarn projection is arranged, and helps when piling, is difficult for sliding between bag and the bag.Respectively there is a block length 1.0～10.0cm at the place, M limit, two angles at the bag end, the hot-melt film of wide 0.5～6.5cm, on the center of sewing needle informer at the bottom of the bag, warp and long 550mm, after the hot melt adhesive tape of wide 75mm is sewed up with the bag closer folding line, two angles in that 150～180 ℃ of hot pressing is compound at the bottom of shutting bag prevent the material seepage.Also respectively there is a block length 1.0～10.0cm at the place, M limit at sack two ends, the hot-melt film of wide 0.5～6.5cm, and hot pressing is compound together to run line in order to charging back packaging bag enclosing, prevents the material seepage.Packaging bag total length 840mm, wide 420mm can adorn material 25～50kg.

Compound type monolayer package bag own wt 200 ± 5 grams, lighter than general asphalt packaging bag, the filling bag temperature of pitch≤200 ℃, 25～40 ℃ of exfoliation temperature, the maximum piling number of plies is 20 layers, every bag can be born pressure is 1.5～2.5T/m ²Be suitable for packing 10#～30# building petroleum asphalt, 55#～75# common petroleum pitch, 60#～100# bi tumenf orr oad in addition, can also pack rosin, paraffin, grain, fertilizer and toughness AMAT.

The advantage of compound type single layer structure packaging bag is: 1. packaging bag utilized a kind of can be with the dissolved extraordinary yarn woven mesh of paper, not only increase the mechanical strength of bag, be difficult for tearing, and can recycle useless, old bag, do not cause environmental pollution, 2. reduce production costs about 30% than multi-layer packaging bag, but 3. every bag expendable weight 50%, many dresses, save on transport costs, 4. be difficult for sliding bag during piling, 5. packing materials are easily peeled off, and are non-leakage.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the birds-eye view of this packaging bag.

Fig. 2 is the A-A sectional structure chart of this packaging bag.

Among the figure: 1. lignilite 2. hot melt adhesive tape 3. bag uppermost layeres 4. hot-melt films 5. weft yams 6. warp yarn 7. bag inside faces 8. organic films.

A kind of long 840mm, the road bitumen packaging bag of wide 420mm, it is by two-layer 70g/m ²Craft paper between accompany linearly arrangement in parallel and warp (6) the webbed extraordinary yarn of braiding that assumes diamond in shape of parallel (5), their hot pressing is combined into the paper bag of single layer structure with adhesives.The bag inside face scribbles the antiseized organic film of one deck (8), the bag bottom edgefold runs suturing with thread management, bag two ends, the end respectively are stained with the hot-melt film (4) of a 2.5cm * 3.5cm, the long 550mm in lignilite outside, the hot melt adhesive tape (2) of wide 75mm, in 150～180 ℃ of hot compound seal pinpricks, the hot-melt film at two angles is compound by heat with ox-hide matter, two angles at the bottom of shutting bag.The M limit at sack two ends also respectively is stained with the hot-melt film (4) of a 2.5cm * 3.5cm, so that after charging, during heat-sealable sack, two angles of sack is also shut by heat is compound, and is non-leakage, easily peels off.

Claims (3)

1. a high strength easy is peeled off non-leakage lightweight monolayer package bag, constituted by two-layer craft paper, braided wire, antiseized organic film, it is characterized in that this packaging bag is the compound type single layer structure, it be by accompany a kind of special yarn (5) between the two-layer craft paper, (6) are composited with adhesives hot pressing, scribble the antiseized organic film of one deck (8) on the inside face of packaging bag, respectively there is the hot-melt film (4) of an antiseep at the place, M limit, four angles of bag, after bag bottom is sewed up with folding line, the outside be surrounded by can hot compound pinprick hot melt adhesive tape (2).

2. according to the described packaging bag of claim 1, it is characterized in that the special yarn band glue between the two-layer craft paper, having can be with the dissolved characteristic of paper, and the parallel of yarn is arrangement in parallel linearly, and warp assumes diamond in shape and parallel is woven into netted.

3. according to the described packaging bag of claim 1, respectively there is a block length 1.0～10.0cm at the place, M limit, four angles that it is characterized in that packaging bag, the hot melt amine sheet of wide 0.5～6.5cm, they are on the position at center the upper/lower terminal sewing needle informer of bag all, can stick together with craft paper through hot pressing is compound, shut a bag angle, prevent seepage.

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