CN201400358Y

CN201400358Y - Eight-folding back-connecting plastic bag

Info

Publication number: CN201400358Y
Application number: CN2009200186414U
Authority: CN
Inventors: 王玉英
Original assignee: WEIFANG LIFA PLASTIC CO Ltd
Current assignee: WEIFANG LIFA PLASTIC CO Ltd
Priority date: 2009-01-20
Filing date: 2009-01-20
Publication date: 2010-02-10
Anticipated expiration: 2019-01-20

Abstract

The utility model discloses an eight-folding back-connecting plastic bag, which comprises a two-layer single-sided barrel-shaped bag body, wherein the barrel-shaped bag body is provided with a bag mouth and a bag bottom, and the two sides of the barrel-shaped bag body are folded inwards to respectively form a four-layer single-sided pleat; the barrel-shaped bag body with the pleat is folded in half to form an eight-layer single-sided pleat bag body, and bag bottom heat sealing lines are arranged at the bottom of the eight-layer single-sided pleat bag body; and the eight-layer single-sided pleat bag body is heat-sealed to a whole body by the bag bottom heat sealing lines. With the structure, the bottom heat sealing lines are not easy to produce cracks when the plastic bag holds garbage, andthe load-bearing strength of the bag bottom is increased, so that the plastic bag is not easy to leak, and thereby, the environment is protected, and the capacity of holding articles and garbage canbe increased.

Description

Eight foldings connect carries on the back plastic bag

Technical field

The utility model relates to a kind of plastic bag, and eight foldings that relate in particular to a kind of usefulness of living connect carries on the back plastic bag.

Background technology

Plastic bag has various purposes in people's life, as the rubbish of splendid attire food, splendid attire clothing and splendid attire life usefulness etc.The plastic bag that uses generally is to seal by the bottom at bag now, thereby form bag with an end opening, after plastic bag inflation or filling up article such as rubbish, opening forms ellipse or circle, and the heat-sealing line of bag bottom remains linearity, like this when using as refuse bag, plastic bag is placed in the sewage disposer, because sewage disposer is generally cylindric, so, the Liang Jiaochu that forms by heat-sealing in the bottom of plastic bag can't full extension, and the two side ends of plastic bag bottom can have depression, thereby the bottom that makes plastic bag can't take the bottom space of sewage disposer fully, and the bottom fold that makes plastic bag has reduced the containing quantity of rubbish in the plastic bag like this in sewage disposer, and can produce certain headspace in the sewage disposer, this space will make sewage disposer reduce the capacity of splendid attire, so cause the use amount of plastic bag to increase, increase the life spending.

In addition because the heat-sealing line of plastic bag bottom is linearly, when plastic bag at the too much quantity of refuse of splendid attire or too during heavy weight rubbish, can produce slight crack because pressure is excessive at heat-sealing line place, the dirty thing of rubbish is exposed or sewage oozes out, flow in the sewage disposer contaminated environment.

The utility model content

Technical problem to be solved in the utility model provides a kind of eight foldings and even carries on the back plastic bag, and bottom heat-sealing line is difficult for producing the crack when splendid attire rubbish, and the load bearing stength at the increase bag end is difficult for revealing, thereby guarantees environmental health, and can improve the capacity of splendid attire rubbish.

For solving the problems of the technologies described above, the technical solution of the utility model is: eight foldings connect carries on the back plastic bag, the tubular bag that comprises two layers of one-sided, described tubular bag has at the bottom of a sack and the bag, the both sides of described tubular bag inwardly fold and form four layers of single face tuck respectively, tubular bag behind the formation tuck is folded to form one eight layers single face tuck bag, heat-sealing line at the bottom of the bag bottom of described eight layers of single face tuck bag is provided with bag, described bag end heat-sealing line is integral eight layers of single face tuck bags heat-sealing.

As a kind of improvement, in described four layers of single face tuck, be positioned at the line of centers of in-to-in folded edge near described tubular bag.

As further improvement, the sack place of described eight layers of single face tuck bag is arranged with the mobile division, and the edge of described mobile division is provided with sack heat-sealing line.

After having adopted technique scheme, the beneficial effect that the utility model is obtained is: inwardly be folded to form the tubular bag that has four layers of single face tuck respectively by the both sides with the tubular bag of two layers of one-sided, form one eight layers single face tuck bag after will forming the tubular bag doubling behind the tuck then, the heat-sealing line is integral the heat-sealing of eight layers of single face tuck bag at the bottom of the bag bottom of eight layers of single face tuck bag is by bag, this structure is when heat-sealing, the thickness of heat-sealing line is eight layers plastics single face, than two layers of traditional single face firm and durable more, increased the load bearing stength at the bag end like this; And plastic bag in use, because with behind the article such as plastic bag splendid attire rubbish, by having opening on the tuck that is folded to form, so the tubular bag behind the article-containing is expanded to opening part earlier, after being expanded to a certain degree, the heat-sealing limit that bag end heat-sealing line and bag end tear line form can be tightened automatically, surrounded by bag on every side, thereby stretch into tubular bag in-to-in centre, even like this at splendid attire comparatively during the heavy weight article, because the gravity of article self can seal line at the bottom of the squeeze bag, and the bottom of plastic bag is bag itself, makes the heat-sealing line be difficult for rising like this and splits, and reveals thereby be difficult for producing, especially when splendid attire rubbish, guaranteed the clean hygiene in the sewage disposer.

In addition, when using as refuse bag, round nest shape can be formed on the bottom of plastic bag behind inflation or the splendid attire rubbish, the bottom of plastic bag is close in the sewage disposer, plastic bag can not produce depression, can take the whole space of sewage disposer in-to-in, thereby has increased the capacity of splendid attire rubbish.

Description of drawings

Fig. 1 is the structural perspective of the utility model embodiment;

Fig. 2 is that the utility model embodiment fills the upward view after rubbish expands;

Fig. 3 is the cross sectional representation of the tubular bag of the utility model embodiment two layers of one-sided;

Fig. 4 is the cross sectional representation that the utility model embodiment has the tubular bag of four layers of single face tuck;

Fig. 5 is the cross sectional representation of eight layers of single face tuck of the utility model embodiment bag;

Among the figure: 1. tubular bag; 2. sack; 3. four layers of single face tuck; 4. eight layers of single face tuck; 5. the bag end, seal line; The bag end tear line; 7. mobile division; 8. sack seals line; 9. sack tear line; 10. opening; 11. the bag end; 31. folded edge.

The specific embodiment

As shown in Figure 1, eight foldings connect carries on the back plastic bag, comprises the tubular bag 1 of two layers of one-sided, and described tubular bag 1 has a sack 2 and the bag end 11 with opening.When producing, the both sides of the tubular bag 1 by as shown in Figure 3 are inwardly folding earlier forms four layers of single face tuck 3 respectively, makes the cross-sectional plane of four layers of single face tuck 3 be M shape, and an end of this tubular bag 1 is sealed, as shown in Figure 4; Wherein, in described four layers of single face tuck 3, be positioned at the line of centers of in-to-in folded edge 31 near described tubular bag 1; Then, the tubular bag 1 behind four layers of single face tuck 3 of formation is folded to form one eight layers single face tuck bag 4, as shown in Figure 5, wherein the tubular bag 1 to end heat-sealing carries out blanking formation mobile division 7; At last, the bag end heat-sealing line 5 that the bag place, the ends 11 by described eight layers of single face tuck bag 4 is provided with is integral 4 heat-sealings of eight layers of single face tuck bag, forms plastic bag as shown in Figure 1.

Form because the thickness of bag end heat-sealing line 5 is plastics single face heat-sealings of eight layers, 11 firm and durable more at the bottom of a bag end heat-sealing line 5 that forms like this makes bag have increased the load bearing stength at bag end 11.

In addition, as shown in Figure 1, sack 2 places of described eight layers of single face tuck bag 4 are arranged with mobile division 7, are easy to carry and are convenient to dump rubbish when using as refuse bag by mobile division 7.

During fabrication, in the mobile division 7 and bag place, the ends 11 respectively a thermal synthesis sack heat-sealing line 8 and a bag end heat-sealing line 5, on plastic bag, processing upper bag mouth tear line 9 and bag end tear line 6 respectively near sack 2 places with near bag place, the ends 11 as required then according to certain distance, make simply like this, be convenient to realize continuous batch production.

As Fig. 2 and shown in Figure 5, in plastic bag behind the splendid attire rubbish, expand to opening 10 places earlier by being folded to form tube-shape bag cognition with opening 10, after being expanded to a certain degree, the heat-sealing limit that bag end heat-sealing line 5 and bag end tear line 6 form can be tightened automatically, surrounded by tubular bag on every side 1, thereby stretch into tubular bag 1 in-to-in centre, thereby round nest shape is formed on the bottom that makes tubular bag 1, even like this at splendid attire comparatively during heavy weight rubbish, because the gravity of rubbish self can seal line 5 at the bottom of the squeeze bag, and the bottom of plastic bag is tubular bag 1 itself, and heat-sealing line 5 is difficult for rising and splits at the bottom of making like this bag, has increased the load bearing stength at the bag end 11, reveal thereby be difficult for producing, guaranteed the clean hygiene in the sewage disposer, and the tubular bag 1 of circle nest shape is close in the sewage disposer bag end 11 of plastic bag, plastic bag can not produce depression, can take the whole space of sewage disposer in-to-in, thereby increase the capacity of splendid attire rubbish.

Certainly, the thickness of heat-sealing line 5 at the bottom of can increasing bag by the mode with more than 1 doubling of tubular bag is not as required torn by spreading with the heat-sealing line at the bottom of 1 bag of the better assurance tubular bag, thereby is guaranteed environmental health.

The utility model is not limited to the above-mentioned specific embodiment, and those of ordinary skill in the art is from above-mentioned enlightenment, expect other the replacement structure all within protection domain of the present utility model.

Claims

1. eight foldings are even carried on the back plastic bag, the tubular bag that comprises two layers of one-sided, described tubular bag has at the bottom of a sack and the bag, it is characterized in that: the both sides of described tubular bag inwardly fold and form four layers of single face tuck respectively, tubular bag behind the formation tuck is folded to form one eight layers single face tuck bag, heat-sealing line at the bottom of the bag bottom of described eight layers of single face tuck bag is provided with bag, described bag end heat-sealing line is integral eight layers of single face tuck bags heat-sealing.

2. eight foldings as claimed in claim 1 connect carries on the back plastic bag, it is characterized in that: in described four layers of single face tuck, be positioned at the line of centers of in-to-in folded edge near described tubular bag.

3. eight foldings as claimed in claim 2 connect carries on the back plastic bag, and it is characterized in that: the sack place of described eight layers of single face tuck bag is arranged with the mobile division, and the edge of described mobile division is provided with sack heat-sealing line.

4. eight foldings as claimed in claim 3 connect carries on the back plastic bag, it is characterized in that: tear line at the bottom of being provided with near described bag end heat-sealing line place bag is being provided with the sack tear line near described sack heat-sealing line place.