CN203064371U

CN203064371U - Eight-edge-seal flat-bottom three-dimensional bag

Info

Publication number: CN203064371U
Application number: CN 201320033276
Authority: CN
Inventors: 李春桂
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-17
Filing date: 2013-01-17
Publication date: 2013-07-17
Anticipated expiration: 2023-01-17

Abstract

The utility model discloses an eight-edge-seal flat-bottom three-dimensional bag and relates to the structure of a packaging bag. The eight-edge-seal flat-bottom three-dimensional bag comprises a front surface, a bottom surface, a rear surface and two side surfaces, wherein the connection edges of the front surface, the bottom surface, the rear surface and the two side surfaces are connected in a heat sealing way. The eight-edge-seal flat-bottom three-dimensional bag is characterized in that upper inwardly-recessed vertical fold marks and bottom outwardly-projected triangular fold marks with folded bottom edges are arranged on the two side surfaces; the bottom surface is provided with inwardly-recessed horizontal fold marks parallel to the front surface; and the bottom surface is folded forwards and rearwards along the horizontal fold marks. Compared with the prior art, the eight-edge-seal flat-bottom three-dimensional bag has the benefits as follows: as the bottom surface of a stand type single-sheet flat-bottom packaging bag is changed into a vertically-folded structure and the fold marks of the stand type single-sheet flat-bottom packaging bag are also improved, the structure is simpler, the design of the fold marks is more scientific, the manufacturing process is easier, and the finished product rate is greatly increased.

Description

The flat three-dimensional bag of eight bandings

Technical field

The utility model relates to a kind of structure of packaging bag, more specifically to the flat three-dimensional bag of a kind of eight bandings.

Background technology

In people's routine and life, various fields all need to use packaging bag, and packaging bag has become requisite articles for use.The main application of packaging bag is splendid attire, preservation, the packaged article of decoration, and its disposing way adopts the mode that couches usually.

Among existing all kinds of packaging bags, have a kind of stand-type packaging bag both in the conventional mode (being lying posture) put, also can adopt the mode of standing to put, usually this stand-type packaging bag is called the bag of supporting oneself.This bag of supporting oneself can only lying posture be put and the packaging bag that can not stand is compared and had certain advantage in some occasions and tradition.For example, the stand-type of it put the attention that can cause the customer, and can save the space of putting.

The construction features of this self-support bag are that its bottom is at the bottom of the spill, when the bag of supporting oneself stands on desktop, its bottom is not contact with desktop, the shortcoming of this kind design is to need to adopt three banding self-support bag product lines, could make by the procedure of processing that complexity is loaded down with trivial details, the inner space is less, and when supporting oneself bag not during the splendid attire products to be packaged, the bag of supporting oneself can not be folded into the thin slice state, taking up room when preserving and transport empty self-support bag is difficult to reduce.

In order to solve the shortcoming that above-mentioned self-support bag exists, the someone has designed the stand-type packaging bag of another kind of structure.Be the flat packaging bag of the disclosed a kind of stand-type monolithic of Chinese patent literature of CN201086889 as notification number, the flat packaging bag of this stand-type monolithic comprise the packaging bag bottom sheet and on enclose sheet material, bottom sheet with on enclose sheet material lower edge be connected, bottom sheet is flat shape and is monolithic.Because this stand-type packaging bag always has eight sealing lips, therefore it is called the flat three-dimensional bag of eight bandings again, there are three folding lines two sides of enclosing sheet material on it, and side bottom forms an isosceles right triangle zone, on enclose the sheet material front surface and also be provided with folding line.But, the bottom construction more complicated of the packaging bag of above-mentioned this structure, be difficult to processing, the not enough science of folding line, the folding line that encloses the sheet material front surface on when erectting causes enclosing the sheet material bending easily, upper end open is closed easily, be unfavorable for that the user puts into article toward packaging bag, and device structure complexity, complex steps, yield rate that the packaging bag bottom is processed are low.

Summary of the invention

Technical problem to be solved in the utility model provides the flat three-dimensional bag of a kind of eight bandings, and the flat three-dimensional bag bottom construction of this eight bandings is fairly simple, and folding line designs more science, is convenient to processing.The technical scheme that adopts is as follows:

The flat three-dimensional bag of a kind of eight bandings, formed by front surface, bottom surface, rear surface and two these five assemblies of side, the limit that described five assemblies are connected is to adopt the mode of heat sealing to connect, it is characterized in that: be equipped with the vertical folding line that caves inward that is positioned at the top, the base doubling triangle folding line that is positioned at the outside protrusion of bottom on described two sides, described bottom surface is provided with and caves inward and the lateral fold parallel with front surface, and the bottom surface transversely folds before and after the folding line.When not holding article in the flat three-dimensional bag of eight bandings, the flat three-dimensional bag of eight bandings is in folded state, and the flat three-dimensional bag occupation space of eight bandings this moment is very little.When the flat three-dimensional bag of eight bandings need hold article, the flat three-dimensional bag of eight bandings is in deployed condition, the volume of the flat three-dimensional bag of eight bandings increases greatly, the base doubling triangle folding line that outwards protrude this moment can be played a supporting role, allow the flat three-dimensional bag of eight bandings can better keep upright state, in order in the flat three-dimensional bag of eight bandings, put into article.

More excellent scheme, described base doubling triangle folding line be shaped as equicrural triangle.Be more convenient for like this making, and its structure also is beneficial to folding and launches, the effect of supporting during expansion is better.

More excellent scheme, the drift angle of described equicrural triangle are positioned at vertical folding line bottom.

The utility model beneficial effect against existing technologies is, because the application's the flat packaging bag of stand-type monolithic makes its bottom surface into the structure of doubling up and down, and the folding line of the flat packaging bag of stand-type monolithic also improved, make its structure simpler, folding line designs more science, it is easier to make, and yield rate improves greatly.

Description of drawings

Fig. 1 is the structural representation of the utility model preferred embodiment folded state;

Fig. 2 is the structural representation of the utility model preferred embodiment deployed condition;

Fig. 3 is the scheme drawing of the utility model preferred embodiment manufacturing process procedure of processing 1;

Fig. 4 is the scheme drawing of the utility model preferred embodiment manufacturing process procedure of processing 2;

Fig. 5 is the scheme drawing of the utility model preferred embodiment manufacturing process procedure of processing 3;

Fig. 6 is the scheme drawing of the utility model preferred embodiment manufacturing process procedure of processing 5;

Fig. 7 is the scheme drawing of the utility model preferred embodiment manufacturing process procedure of processing 6.

The specific embodiment

As shown in Figure 1, 2, the flat three-dimensional bag of eight bandings in this preferred embodiment is made up of front surface 7, bottom surface 8, rear surface 9 and two side 10 these five assemblies, and the limit that described five assemblies are connected is to adopt the mode of heat sealing to connect.

Be equipped with the vertical folding line 11 that caves inward that is positioned at the top, the base doubling equicrural triangle folding line 12 that is positioned at the outside protrusion of bottom on described two sides 10, the drift angle of this base doubling equicrural triangle folding line 12 is positioned at vertical folding line 11 bottoms, described bottom surface 8 is provided with and caves inward and the lateral fold parallel with front surface 7, and bottom surface 8 transversely folding line reclinates.

As shown in Figure 1, when not holding article within it, the flat three-dimensional bag of eight bandings is in folded state, and the flat three-dimensional bag occupation space of eight bandings is very little.

As shown in Figure 2, when the flat three-dimensional bag of eight bandings need hold article, the flat three-dimensional bag of eight bandings is in deployed condition, the volume of the flat three-dimensional bag of eight bandings increases greatly, the base doubling equicrural triangle folding line 12 that outwards protrude this moment can be played a supporting role, allow the flat three-dimensional bag of eight bandings can better keep upright state, in order in the flat three-dimensional bag of eight bandings, put into article.

The manufacturing process of the flat three-dimensional bag of above-mentioned eight bandings may further comprise the steps successively:

1, as shown in Figure 3, place the side film assembly 2 that folds at the first film 1 upper surface that forms rear surface 9;

2, as shown in Figure 4, with 2 two lower ends 201 of side film assembly respectively with the first film 1 upper surface heat sealing that forms rear surface 9;

3, as shown in Figure 5, to side film assembly 2 knuckles, forming 6 folding lines 4 (is above-mentioned vertical folding line 11, base doubling equicrural triangle folding line 12, owing to do not make packaging bag this moment, therefore the structure that belongs to side film assembly 2), obtain knuckle packaging bag half-blank;

4, with the bottom surface film about in the of 5 after the doubling, bottom surface film 5 is filled in above-mentioned knuckle packaging bag half-blank bottom of finishing knuckle, then with bottom surface film 5 respectively with the side film assembly 2 right flank bases that are positioned at knuckle packaging bag half-blank left side, be positioned at knuckle packaging bag half-blank right side side film assembly 2 left surface base heat sealings together;

5, with side film assembly 2 end faces middle parts and second film, 3 heat sealings that form front surface 7, with top margin and second film, the 3 lower surface base heat sealings that form front surface 7 of bottom surface film, with base and the first film 1 upper surface base heat sealing of bottom surface film, form packaging bag, as shown in Figure 6;

6, as shown in Figure 7, cut off from each film assembly end face middle part, side, make packaging bag finished product 6.

When packaging bag finished product 6 folds, as shown in Figure 1; Packaging bag finished product 6 launches when using, as shown in Figure 2.

The content of the above specific embodiment only is preferred embodiment of the present utility model, and above preferred embodiment is not to limit practical range of the present utility model; Every various equivalents of making according to the protection domain of its claim of the utility model are all covered by the protection domain of its claim of the utility model.

Claims

1. the flat three-dimensional bag of a banding, formed by front surface, bottom surface, rear surface and two these five assemblies of side, the limit that described five assemblies are connected is to adopt the mode of heat sealing to connect, it is characterized in that: be equipped with the vertical folding line that caves inward that is positioned at the top, the base doubling triangle folding line that is positioned at the outside protrusion of bottom on described two sides, described bottom surface is provided with and caves inward and the lateral fold parallel with front surface, and the bottom surface transversely folds before and after the folding line.

2. the flat three-dimensional bag of eight bandings as claimed in claim 1 is characterized in that: described base doubling triangle folding line be shaped as equicrural triangle.

3. eight bandings as claimed in claim 2 are flat three-dimensional bag, and it is characterized in that: the drift angle of described equicrural triangle is positioned at vertical folding line bottom.