CN2353660Y

CN2353660Y - Composite material for sealed package bag capable of repeatedly using

Info

Publication number: CN2353660Y
Application number: CN 98205556
Authority: CN
Inventors: 刘艳匀
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-11-21
Filing date: 1998-06-04
Publication date: 1999-12-15
Anticipated expiration: 2008-06-04

Abstract

The utility model relates to composite materials for repeatedly sealing package bags, which is used for making a sealing mouth, a bottom layer is a single layer film or a composite film, and the upper surface is a single layer film; one end which is near an end part is provided with a strip-shaped groove, the other end which is near the end part is provided with a strip-shaped convex arris, the convex arris and the groove can be tightly buckled to form the sealing mouth of a package, and the sealing mouth of a package bag can be repeatedly switched and sealed; a layer of single layer film on the upper surface is compounded with a bottom layer film, and the utility model can be conveniently used for making packing bags whose sealing mouths can be repeatedly switched and sealed; 30 percent to 40 percent of the production cost of the package bags is reduced, and the packing bags are especially suitable for the packaging of no throwaway foods, daily articles and pharmaceuticals.

Description

Be used for to repeat the composite material of sealing bags

The utility model relate to a kind of be used to manufacture seal the composite material that can repeat the folding sealing bags, this composite material has strip groove and fin Structural layer.

At present common a kind ofly can repeat folding packages sealed bag with sealing of making of monolayer polyethylene, be the used single thin film of this packaging bag 3 as shown in Figure 1, when blown film is shaped, extrude hard slightly strip groove of quality 2 and strip fin 1 with same mould, promptly constitute packaging bag and can repeat sealing of folding.But, can not satisfy the requirement, particularly packaging for foodstuff that extensive stock is packed by the packaging bag that single layer plastics films constitutes.Composite plastic film has been widely used in commodity packaging, and the sack of its packaging bag is that heat seal forms, and its shortcoming is that the back sealing of bag Kaifeng goes to pot, and the article in the bag can not repeat sealing and preserve.For making packaging bag have the repetition sealing function, I propose name on March 21st, 1996 and am called " a kind of sealing bags ", the patent No. is the patent of ZL96236739.7, on this packing sack, setting can repeat folding leak free sealing band, promptly bag and the sealed sealing band of being made by nonrigid plastic film or metallic membrane or aluminize plastic film and other paper substrate composite material forms through hot binding, or is hot pressed into concavo-convex groove by bag itself after folding.The packaging bag of this form, bag must comprise following four road production processes: (one) printing; (2) on common compounding machine, make composite material; (3) bag; (4) at sack sealing band is set, by bag and sealed sealing band or zipper seal band hot binding.This packaging bag makes bag interior article can repeat sealing behind Kaifeng and preserves, and the customer is benefited.But, produce this packaging bag with common composite material,, make the productive costs of packaging bag increase by 30% to 40% owing to increased the operation of (four) road pressing sealing band, and influenced the outward appearance of product to a certain extent, cause this packaging bag to be difficult to substitute the conventional composite packaging bag.

The purpose of this utility model is, overcoming above-mentioned shortcoming provides a kind of being used to manufacture and sealing the composite material that can repeat the folding sealing bags of being composited.

The purpose of this utility model is to realize like this, be that the utility model provides a kind of and is composited, be used to manufacture and seal the composite material that can repeat folding packages sealed bag, it comprises two-layer or two-layer above film, be that its bottom is single thin film or laminated film, one deck is for having formed the single thin film of strip groove and strip fin structure above it when blown film, the place has strip groove in one end adjacent end, its other end adjacent end place has the strip fin, described strip fin and groove can closely fasten, promptly constitute packaging bag and can repeat the folding leak free and seal, said above the single thin film of one deck be compound on the bottom film.

Composite material with strip fin and groove structure layer provided by the utility model, can make easily and have the laminated film bag and seal and to repeat folding packages sealed bag, be that its technology is simple, can increase productivity widely, with above-mentioned ZL96236739.7 patent, manufacture to seal with common composite material and can repeat folding packages sealed bag and compare, can omit the operation that repetition folding sealing band is set behind the bag, can reduce production costs 30% to 40%.Manufacture to seal by the utility model composite material and can repeat folding packages sealed bag, be specially adapted to the food of non-once use, articles for daily use, the packing of pharmaceuticals, this is that prior art is made with single thin film, seal and can repeat folding packages sealed bag, and disposable laminated film packaging bag can't accomplish.Therefore, provided by the utility model be used to manufacture seal the composite material that can repeat folding packages sealed bag, have remarkable economic efficiency and social benefit.By the made packaging bag of composite material of the present utility model, the leak free conventional bag that can not repeat that it will replace a large amount of uses in the market pack, and therefore, it will cause a change of global packaging industry.

Below in conjunction with accompanying drawing, embodiment of the present utility model is described, wherein:

Fig. 1 makes for the prior art single thin film, seals that can to repeat folding packages sealed bag used, has formed the single thin film schematic cross-section of strip groove and strip fin structure when blown film;

Fig. 2 is the composite material schematic cross-section that the utlity model has strip fin and strip groove Structural layer;

Fig. 3 is with the made packaging bag schematic cross-section of composite material shown in Figure 2;

Fig. 4 is for making the compounding machine pressure roller scheme drawing of composite material shown in Figure 2.

See also shown in Figure 2, for providing a kind of, the utility model is composited, be used to manufacture and repeat folding packages sealed bag, composite material 5 with strip fin and strip groove Structural layer, one deck is for having formed the single thin film 3 of strip groove and strip fin Structural layer above it when blown film, promptly this single thin film at one end has strip fin 1 in the adjacent end place, other end adjacent end place has strip groove 2, its bottom is single thin film or laminated film 4, thin film 3 can be used known mode above said, be compound on the bottom film 4 as the dry type complex method, promptly constitute composite material 5 of the present utility model.

Said single thin film 3 is plastic sheetings, for example be polyethylene or polypropylene film, said bottom 4 can be a single thin film, it for example is mylar, it also can be laminated film, can according to heat-resisting, withstanding corrosion, to resist cold, prevent that requirement that ultraviolet ray sees through from selecting different materials to carry out compound, for example can comprise metallic film, as aluminium foil commonly used; Plastic sheeting is as polypropylene; Fiber membrane such as paper etc.

Said strip fin 1 can closely fasten mutually with groove 2, and its number can respectively be a wall scroll, two bars or many.

The utlity model has the composite material 5 of strip fin 1 and groove 2, can be made into to seal and can repeat folding packages sealed bag, as shown in Figure 3, said strip fin 1 and strip groove 2 promptly constitute packaging bag can be repeated the folding leak free and seal.

Said single thin film 3 can be only to have groove 2 or fin 1 separately at one end adjacent end place.When bag, have the composite material of strip groove 2 separately and complement one another with the composite material that has strip fin 1 separately and can repeat folding packages sealed bag to constitute.

See also shown in Figure 4, for being used to make compounding machine pressure roller with strip groove and strip fin Structural layer composite material, comprise pressure roller 6 and lower compression roller 7, lower compression roller 7 is mainly used in bottom 4 is heated, last pressure roller 6 is mainly used in composite material is applied suitable pressure, and the single thin film 3 that top one deck can be had strip groove and strip fin when last lower compression roller rotates is compound with bottom film 4.Thin film itself has formed strip groove and strip fin structure above said when blown film, becomes the indivisible some of film.

Because traditional compounding machine pressure roller is the cylinder of two surface smoothings; when single thin film 3 enters pressure roller; its groove and fin structure can be driven plain damage; for this reason; the utility model provides a kind of compounding machine pressure roller; the strip fin 1 of pressure roller 6 on single thin film 3 and the relevant position of groove 2 on it; process first annular groove 8 and second annular groove 9; the width of first annular groove 8 is corresponding with the shape of the fin 1 of the degree of depth and single thin film 3; the width of second annular groove 9 and the degree of depth should be corresponding with the shape of the groove 2 of single thin film 3; when making single thin film 3 enter pressure roller; its groove 2 and fin 1 can be hidden in respectively in first annular groove, 8, the second annular grooves 9 and be protected.

Claims

1. one kind is used to manufacture and seals the composite material that can repeat folding packages sealed bag, it is composited by two-layer or two-layer above film, it is characterized in that, its bottom is single thin film or laminated film, one deck is a single thin film above it, this single thin film has formed strip groove and strip fin structure when blown film, promptly has strip groove at one end adjacent end place, has the strip fin at its other end adjacent end place, said strip fin and groove can closely fasten, and said top thin film is compound on the bottom film.

2. composite material as claimed in claim 1 is characterized in that, said bottom is a 2-10 layer laminated film.

3. composite material as claimed in claim 1 is characterized in that, described top thin film is a plastic sheeting.

4. composite material as claimed in claim 1 is characterized in that the single thin film of described bottom or laminated film can comprise metallic film, fiber membrane, plastic sheeting.

5. composite material as claimed in claim 1 is characterized in that, the bar number of said strip fin and strip groove can be a wall scroll or more than 2 or 2.

6. composite material as claimed in claim 1, it is characterized in that, described above it one deck single thin film only have strip groove or strip fin separately at one end adjacent end place, when bag, the composite material that has the composite material of strip groove and have a strip fin complements one another.