CN218537694U - Inner core-free flexible package composite paper bag roll with easy-tearing line - Google Patents

Abstract

The utility model discloses a no inner core soft-packing composite paper bag book with easily tear line belongs to food and beverage packaging technical field, composite paper bag book adopts no inner core structure, and composite paper bag is rolled up and is regarded as the empty no input filling state's of nothing container bag in the middle of independent and the inner wall by the structural unit that the horizontal district of heat seal of no input filling area and upper and lower adjacent heat seal is constituteed, and whole container bag is rolled up the visible container bag cluster that constitutes for the lapping by concatenating the container bag that links together one by one. When the paper bag packaging machine is used, the paper bag is torn away from the paper bag along the easy-tearing line formed by processing the paper bag roll in the non-input filling area, so that the paper bag is separated from the paper bag roll and becomes an available paper bag with one open end.

Description

Soft-packing composite paper bag roll without inner core and with easy-tearing line

Technical Field

The utility model belongs to the technical field of food and beverage package, a no inner core soft-packing composite paper bag book with easily tear line is related to.

Background

The common food and beverage packages in the market mainly comprise materials such as paper, plastic, ceramics, glass, ring-pull cans and the like, and have advantages and advantages, wherein paper bags are widely applied to the field of food and beverage packages due to economy, convenience and practicability. At present, a common paper bag form is an independent paper bag which is formed into an opening at one end when the paper bag is manufactured and delivered, when a merchant uses the paper bag on site, the paper bag is stacked in bulk or is scattered in a bag storage frame, the paper bag is randomly stacked, standardized service of the merchant on-site packaging is not facilitated, and the paper bag is easily influenced by external environmental sanitation conditions.

In order to solve the standardized service problem and the sanitary problem of on-site scattered paper bag packaging, application publication No. CN 112110027A provides a product solution of a composite paper bag roll packaging product with an inner wall protected from secondary pollution, and this product solution the product is rolled up by an inner core and a paper bag, and the inner core is located in the paper bag roll, and the paper bag roll is formed and rolled up on the inner core, the paper bag roll adopts the flexible packaging composite paper with heat seal property and meeting the national food and health requirements, and this composite paper can be turned over and folded into shape and its base paper thickness is 0.04mm-0.25mm, the paper bag roll internal wall face is the composite layer face with heat seal property of the flexible packaging composite paper, the paper bag roll presents the structural characteristic elements including the following roll body forming: the paper bag roll is provided with a structural unit consisting of the non-input filling area and upper and lower adjacent heat seal transverse sealing areas, the structural unit can be regarded as a closed paper bag which is independent, self-isolated, completely sealed at the periphery and empty in the middle of the inner wall and has no input filling state, and the whole paper bag roll can be regarded as a paper bag string consisting of closed paper bags which are packaged and connected in series one by one.

This kind of prevent that inner wall is by secondary pollution's compound paper bag roll form that application publication No. CN 112110027A product solution provided, need utilize when using the container bag to cut or cut the instrument and cut the container bag book and cut or cut out and just can make the container bag break away from the container bag book and become an available container bag, it is not simple and convenient in the operation.

Meanwhile, the product solution of the application publication No. CN 112110027A consists of a paper bag roll and an inner core, the structure with the inner core makes the product structure complicated and increases the product material cost, but the inner core is not a necessary constituent element of a single paper bag, and the inner core is essentially unrelated to the influence of the external environment on the paper bag and belongs to a non-core functional part.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the bulk paper bag mentioned in the introduction of the above-mentioned background art is difficult for stacking the standardized service of the on-the-spot packing of trade company and is easily influenced by the external environment sanitary condition, use the container bag to need cut or cut out the instrument and use not simple and convenient in solving the product solution of application publication No. CN 112110027A simultaneously to and there is the inner core structure to cause the product structure to retrench and send the problem that product material cost increases, and the composite paper bag of no inner core flexible package that has the line of easily tearing of proposing is rolled up.

In order to realize the purpose, the utility model adopts the following technical scheme:

a paper bag roll of soft packing composite paper without inner core with easy tearing line is disclosed in application publication No. CN 112110027A, which has no inner core and no easy tearing line in the non-input filling area. The line that easily tears is add although having influenced the function that the inner wall was prevented by secondary pollution of compound paper bag book of emphasizing among application publication No. CN 112110027A's the product solution, but increase and conveniently tear after the line and leave the container bag, increase simultaneously and easily tear behind the line, the nexine container bag still is covered around the protection layer upon layer by outer container bag, makes the nexine container bag still keep difficult receiving outside health environment to influence. Meanwhile, a non-penetrating easy-tearing line mode is preferably adopted, so that the inner wall layer or a plurality of composite layers in the paper bag roll are kept complete and do not penetrate, and the function of preventing the inner wall of the composite paper bag roll from being secondarily polluted can be still partially retained in the product solution of the application publication No. CN 112110027A.

The paper bag roll is of a structure without an inner core, the material of the paper bag is the soft packaging composite paper which has heat seal property and meets the national food sanitation requirement, the composite paper can be folded and formed, the thickness of the base paper of the composite paper is 0.04mm-0.25mm, and the inner wall surface of the paper bag roll is a composite layer surface of the soft packaging composite paper with the heat seal property. Appear after the shaping of container bag book and still add easily to tear the line except including following roll body shaping structural characteristic element (left boundary, right boundary, hem line, heat seal back seal district, the horizontal district of heat seal, no input filling area, container bag book end), the structural unit that no input filling area and upper and lower adjacent heat seal horizontal seal district are constituteed on the container bag book can be regarded as an independent and inner wall in the middle of the empty container bag of no input filling state, and whole container bag book is visible for the container bag cluster that constitutes by the container bag that concatenates the company together of one by one of lapping.

Left and right borderlines:

the left and right boundaries of the composite paper which is unfolded into a plane shape and used for the paper bag roll forming;

folding lines:

the paper bag is rolled into a flat shape, and the left and right sides of the composite paper are folded to form left and right hemlines. The left and right hemlines are straight lines which are consistent with the length direction of the paper bag roll and are parallel to each other;

after the paper bag is folded and formed, the left side and the right side of the composite paper are overlapped or overlapped at intervals from the left boundary line and the right boundary line, and the folding lines of the odd tracks on the left side and the right side of the composite paper become the width boundary of the paper bag roll. The inner wall surface of the paper bag roll is a composite layer surface of the composite paper with heat sealing property.

And (3) heat sealing the back seal area:

after the composite paper is folded and formed at the left side and the right side, the composite paper is closed and sealed in an overlapping or overlapping area with a certain distance from the left boundary line and the right boundary line at the left side and the right side by utilizing a thermal bonding mode. This embodiment is designated throughout the text as heat seal back and this embodiment area is referred to as the heat seal back area. The width of the heat seal back seal is not less than 2mm.

Heat sealing the transverse sealing area:

the length of each heat seal transverse sealing area is limited by the width of the paper bag roll; in the process of heat seal after folding and forming, the front and back inner wall surfaces of the paper bag roll in the heat seal transverse sealing area are completely sealed in a heat seal mode. This embodiment is referred to throughout as a heat seal cross seal. The width of the heat-seal transverse sealing area is not less than 2mm. The heat-seal transverse sealing areas are arranged at intervals in the length direction of the paper bag roll in a non-overlapping way.

No input fill area:

after the processes of folding and forming, heat seal back sealing and heat seal transverse sealing, the region between the upper and lower adjacent heat seal transverse sealing regions is a filling region without input. The non-input filling areas are arranged at intervals in the length direction of the paper bag roll;

easy-to-tear line:

in order to tear and separate from the paper bag roll and utilize the paper bag when in use, an easy-tearing line is additionally arranged in the non-input filling area of the paper bag roll.

Paper bag roll end:

and the two tail ends in the length direction presented after the paper bag roll is formed are the paper bag roll ends.

Preferably, the soft package composite paper used for the coreless soft package composite paper bag roll with the easy-tear line has more than one composite layer besides the base paper layer, and the innermost layer (namely, the inner wall layer of the paper bag roll) is the composite layer with the heat sealing property.

Preferably, the inner wall layer of the inner core-free flexible packaging composite paper bag roll with the easy-tear line is a plastic particle PP or PE laminating layer with heat seal property.

Preferably, the inner wall layer of the inner-core-free flexible packaging composite paper bag roll with the easy-to-tear line is a PLA PE (polylactic acid) laminating layer with heat seal property and biodegradability.

Preferably, the inner wall layer of the paper bag roll of the coreless soft packing composite paper with the easy-tearing line is a coating which has heat sealing property and can be recycled with paper pulp.

Preferably, the number of the left and right folding lines of the inner core-free flexible packaging composite paper bag roll with the easy-tearing line is more than or equal to three.

Preferably, the form of the easy-tearing line of the coreless soft-packing composite paper bag roll with the easy-tearing line is in the form of an easy-tearing dotted line penetrating through all layers of the composite paper.

Preferably, the paper bag roll of the coreless soft-packing composite paper with the easy-tearing line is in the form of the following non-penetrating easy-tearing line: that is, the easy-to-tear line is only added on the non-inner wall layer of the paper bag roll, and the inner wall layer or a plurality of composite layers inside the paper bag roll still keep complete.

Preferably, the easy-tearing line of the coreless soft-packing composite paper bag roll with the easy-tearing line is in parallel and consistent position relation with the width direction of the paper bag roll.

Preferably, the easy-to-tear line of the coreless soft-packaged composite paper bag roll with the easy-to-tear line is not parallel to the width direction of the paper bag roll and is in a non-parallel position relationship.

Preferably, the paper roll for the coreless soft-packing composite paper with the easy-tearing line is provided with a position identification mark on the outer surface, and the position identification mark can be identified by a sensor.

Preferably, the position of the easy-to-tear line at two ends or one end of the coreless soft-package composite paper bag roll with the easy-to-tear line is overlapped with the position of the end of the paper bag roll, namely the position of the easy-to-tear line at two ends or one end of the paper bag roll is the end of the paper bag roll.

Compared with the prior art, the beneficial effects of the utility model are that: the inner core-free flexible packaging composite paper bag roll with the easy-tearing line adopts an inner core-free structure, so that the product structure is simplified and the product material cost is reduced. Meanwhile, the structural unit consisting of the non-input filling area and the upper and lower adjacent heat seal transverse sealing areas on the paper bag roll can be regarded as an independent paper bag with a hollow inner wall in the middle and a non-input filling state, and the whole paper bag roll can be regarded as a rolled paper bag string consisting of paper bags which are connected in series. Only when the paper bag is used, the paper bag is torn away along the easy-tearing line and is separated from the paper bag roll to form the usable paper bag with one open end. The technical proposal of the product can lead the paper bag to be very convenient to tear along the easy-to-tear line when in use; on the paper bag roll, the inner paper bag is covered and protected layer by the outer paper bag, so that the inner paper bag is still not easily influenced by the external sanitary environment; meanwhile, compared with scattered paper bags, the paper bag roll is easier to stack neatly and is easier to realize the standardized service of on-site packaging of merchants; the function of preventing the inner wall of the paper bag from being secondarily polluted, which is emphasized by the original CN 112110027A product solution, can be more limited and reserved by adopting the preferable non-penetrating easy-tearing line.

Drawings

FIG. 1 is a schematic view of the finished product of a core-free single-folded PP laminated paper roll with easy-to-tear lines according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the appearance of an end of a core-free single-folded PP laminated paper bag roll with an easy-tear line after being opened, which depends on the embodiment shown in FIG. 1;

FIG. 3 is a schematic drawing of a spreading plane of a laminated paper used for roll forming of a core-free single-folded PP laminated paper bag with an easy-tear line according to an embodiment shown in FIG. 1;

fig. 4 is a schematic diagram of easy-to-tear lines formed by processing laminated paper unfolding planes used for roll forming of core-free single-folded PP laminated paper bags with the easy-to-tear lines depending on the embodiment shown in fig. 1;

fig. 5 is a schematic diagram of inward turning and folding of the face paper of the laminated film layer which is relatively unfolded at the left and right sides of the flat laminated film paper which is unfolded for forming the core-free single-folded PP laminated paper bag roll with the easy-to-tear line depending on the embodiment shown in fig. 1;

FIG. 6 is a schematic diagram of forming by folding 180 degrees towards the interior of the laminated layer paper, depending on an embodiment shown in FIG. 1, wherein the interior core-free single-folded PP laminated paper bag roll with an easy-to-tear line is unfolded to form the left and right sides of the laminated paper in a plane shape;

fig. 7 is a schematic diagram of hot-sealing back after folding 180 degrees of the left and right sides of the PP laminated paper used for roll forming of the non-inner core single-folded PP laminated paper bag with an easy-to-tear line depending on the embodiment shown in fig. 1;

FIG. 8 is a schematic view of equidistant heat-sealing and transverse sealing in the process of forming a paper bag roll of the core-free single-folded PP laminated paper with easy-tear lines according to an embodiment shown in FIG. 1;

FIG. 9 is a drawing which depends on an embodiment shown in FIG. 1, namely after heat-seal transverse sealing is carried out in the process of forming an inner core-free single-folded PP laminated paper bag roll with an easy-tear line, winding and rolling the paper bag roll on an inner core.

Fig. 10 is a drawing which depends on an embodiment shown in fig. 1, namely, an inner core-free single-folded-edge PP laminated paper bag roll with an easy-to-tear line, and after the inner core is completely wound, the inner core is taken out, so that the inner core-free single-folded-edge PP laminated paper bag roll with the easy-to-tear line is finally formed.

FIG. 11 is a schematic plane view of a paper bag roll of non-core single-folded PP laminated paper with easy-tear lines, which is torn along the easy-tear lines to form a paper bag with an opening at one end, according to the embodiment shown in FIG. 1;

FIG. 12 is a schematic view of an embodiment of FIG. 1, namely an inner core-free single-folded PP laminated paper bag roll with easy-to-tear lines, which is torn down along the easy-to-tear lines to form a paper bag with an opening at one end and is stretched at the opening;

FIG. 13 is a schematic view of a second embodiment of the present invention, which is a finished product of a PLA laminated paper roll without an inner core and with a color code of a tri-fold edge band having an easy-tear line;

FIG. 14 is a schematic end view of a paper roll of a core-free three-fold sideband color-coded PLA laminated paper with an easy-tear line according to the second embodiment shown in FIG. 13;

FIG. 15 is a schematic drawing showing a plane of the unwinding of PLA laminated paper used for roll forming of a paper bag of the core-free three-fold sideband color-coded PLA laminated paper with an easy-tear line according to the second embodiment shown in FIG. 13;

FIG. 16 is a schematic diagram of an arrangement of position identification marks-color marks printed on the reverse side (i.e., the non-inner wall surface of the paper bag roll after forming) and easy-tear lines formed by processing the PLA laminated paper in a plane shape unfolded for forming a PLA laminated paper bag roll without an inner core and three-fold side band color marks with easy-tear lines according to a second embodiment shown in FIG. 13;

FIG. 17 is a schematic view of the two sides of a planar PLA laminated paper which is unfolded and folded symmetrically three times respectively for forming by winding a paper bag of the PLA laminated paper without an inner core, a three-fold side band color code and the inner core with an easy-to-tear line according to the second embodiment shown in FIG. 13;

fig. 18 is a schematic view of the two sides of the unfolded planar PLA laminated paper roll for forming the core-free three-fold sideband color-coded PLA laminated paper bag roll according to the second embodiment shown in fig. 13, i.e., having an easy-tear line, and being folded symmetrically three times respectively;

FIG. 19 is a schematic view of the heat-sealing back seal completed after the two sides of the PLA laminated paper used for roll-forming of the core-free three-fold sideband color code PLA laminated paper bag with easy-to-tear lines are folded and formed by relying on the second embodiment shown in FIG. 13;

FIG. 20 is a schematic view of continuous equidistant heat-sealing and transverse-sealing by color code position positioning in the roll forming process of a core-free three-fold sideband color code PLA laminated paper bag with an easy-to-tear line relying on the second embodiment shown in FIG. 13;

FIG. 21 is a PLA laminated paper which is used for roll forming of a core-free three-fold sideband color code PLA laminated paper bag with easy-to-tear lines and is wound and rolled on a core after heat seal and transverse seal according to a second embodiment shown in FIG. 13;

fig. 22 is a drawing which depends on the second embodiment shown in fig. 13, namely, a core-free three-fold side band color code PLA laminated paper roll with an easy-to-tear line, and after the core is wound on the core, the core is taken out and finally the core-free three-fold side band color code PLA laminated paper roll with the easy-to-tear line is formed;

FIG. 23 is a schematic flat view of a paper bag with an opening at one end when the paper bag is torn along an easy-tear line from a second embodiment shown in FIG. 13, namely a core-free three-fold side band color code PLA laminated paper bag roll without an inner core;

fig. 24 is a schematic diagram of a paper bag with an opening at one end and opened at the opening after being torn along an easy-tear line by relying on a second embodiment shown in fig. 13, namely, a core-free three-fold edge band color code PLA laminated paper bag roll without an inner core.

FIG. 25 is another form of heat seal backing by folding over before the heat seal backing to form another form of heat seal backing to form a heat seal backing region, in accordance with a specific variation of the second embodiment shown in FIG. 13.

Illustration of the drawings:

product example I-core-free single-folded PP laminated paper bag roll with easy-to-tear lines, figure 1, figure 2 and the names of the parts or structural characteristic elements corresponding to the marks in the figures 3-12 of the forming embodiment steps are as follows:

1: inner core

2: inner core-free single-folded edge PP laminated paper bag roll with easy-to-tear line

0201: PP drenches membrane paper

02011: left boundary line

02012: the right boundary line

02021: left edge folding line

02022: right edge folding line

02023: easy-to-tear line

020112: heat seal back seal area

020512: heat seal transverse sealing area

020521: input-free filled-in area

02001: paper bag roll end

Remarking: wherein, the mark 1,2 is a part related to the process of manufacturing the paper bag roll of the inner core-free single-folded PP laminated paper with the easy-tearing line, the mark 0201 is the PP laminated paper which is a raw material used by the paper bag roll, and the rest marks are structural characteristic elements displayed in the forming process or the using process after forming of the paper bag roll.

Second product example-non-core three-fold band color-coded PLA coated paper roll with tear lines fig. 13, fig. 14, and forming embodiment steps embodiments thereof fig. 15-24, and fig. 25 targeted variations of the second embodiment, each labeled with a corresponding part or structural feature name:

10: inner core

20: paper bag roll of PLA (polylactic acid) laminating paper with easy-to-tear line and without inner core and three-fold side band color codes

2011: PLA drenches membrane paper

20111: left boundary line

20112: the right boundary line

20121: color code

20122: easy-to-tear line

20131: left folding line 1

20132: left edge folding line 2

20133: left edge folding line 3

20134: right edge folding line 1

20135: right folding line 2

20136: right edge folding line 3

201112: heat seal back seal area

201612: heat seal transverse sealing area

201621: input-free filled area

20101: paper bag roll end

20137: right edge folding line 4

Remarking: the marks 10 and 20 are parts related to the process of manufacturing the paper bag roll with the easy-to-tear line and without the inner core, the three-fold edge band color code PLA film-coated paper, the mark 2011 is PLA film-coated paper which is a raw material used by the paper bag roll, and the rest marks are structural characteristic elements displayed in the forming process of the paper bag roll body or in the use process after forming.

Detailed Description

The technical solution in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

Example one

Referring to the attached drawings 1 and 2 of the specification product, and the attached drawings 3-12 of the forming implementation steps: an example of a core-free soft-packing composite paper bag roll with easy-tearing lines, a core-free single-folded PP laminated paper bag roll with easy-tearing lines 2.

The inner core-free single-folded PP film-coated paper bag roll 2 with the easy-tearing line adopts an inner core-free structure, the raw material of the paper bag is flexible package composite paper, and specifically, the PP film-coated paper 0201 is made of base paper which is matt powder paper (the thickness of the base paper is 0.11 mm) and single-side film coating (the thickness of the film coating layer is 20 g/square meter). The inner wall surface of the paper bag roll 2 is a PP laminated film layer surface with heat seal property of the soft package composite paper. As shown in the attached figure 3, 500 independent paper bags (the width of the paper bag is 130mm, the height of the paper bag is 184 mm) with empty inner walls in the middle and in a non-input filling state are formed in the length direction by unfolding, processing easy-to-tear lines, folding and forming, heat sealing and back sealing, heat sealing and transverse sealing, rolling and other processes of the flat PP laminating paper 0201 with the width of 270 mm. The paper bag roll 2 mainly has the following roll structural characteristics on the formed roll: a left boundary line 02011, a right boundary line 02012, a left broken line 02021, a right broken line 02022 and an easy-tear line 02023; a heat seal back sealing area 020112, a heat seal transverse sealing area 020512, an input-free filling area 020521 and a paper bag roll end 02001. The whole paper bag roll 2 can be regarded as a paper bag string formed by rolled paper bags which are packaged and connected in series, are independent and have empty inner walls and no input filling state.

Left and right borderlines 02011 and 02012:

the left and right boundaries of the PP laminated paper 0201 with the spread width of 270mm and the plane shape for forming the paper bag roll 2 are parallel to the length direction of the paper bag roll 2; after the PP laminating paper 0201 is formed through turning and folding, overlapping is achieved on the left side and the right side of the PP laminating paper 0201 by taking the left boundary line 02011 and the right boundary line 02012 as boundaries, and the width of an overlapping area is 10mm.

Left and right hemlines 02021 and 02022:

the left side and the right side of the PP laminating paper 0201 which is unfolded into a plane shape and used for forming the paper bag roll 2 are respectively turned over for 180 degrees in the PP laminating layer paper to form a left hemline 02021 and a right hemline 02022 in one step, the left hemline 02021 and the right hemline 02022 are parallel to each other and are consistent with the length direction of the paper bag roll 2, and the distance between the left hemline and the right hemline is 70mm;

after the paper bag roll is turned over and folded and formed, the PP film lamination layer surface is the inner wall surface after forming, the left side and the right side of the PP film lamination paper 0201 are in 10mm overlapping width by taking a left boundary line 02011 and a right boundary line 02012 as boundaries, the left folding line 02021 and the right folding line 02022 become boundaries of the width of the paper bag roll 2 after forming, and the width of the paper bag roll 2 is 130mm.

Heat seal back sealing area 020112:

in the process of heat seal after turning and folding to form, the unfolded planar PP laminating paper 0201 used for forming the paper bag roll 2 is turned over at the left side and the right side, and heat seal back seal closing of the paper bag roll 2 is realized by a heat bonding mode in an overlapping width 10mm area which is bounded by a left boundary line 02011 and a right boundary line 02012 at the left side and the right side of the PP laminating paper 0201, wherein an implementation area of the heat seal back seal closing is called a heat seal back seal area 020112, all the overlapping areas are heat seal closed in the embodiment, and therefore the width of the heat seal back seal area 020112 is 10mm.

Heat-sealing a transverse sealing area 020512:

the length of each heat-seal transverse sealing area 020512 is defined by the width of the paper bag roll 2, the length of the heat-seal transverse sealing area 020512 in the example is equal to the width of the paper bag roll 2 by 130mm, and the height of each heat-seal transverse sealing area 020512 in the length direction of the paper bag roll 2 is 10mm; the heat-seal transverse sealing areas 020512 are continuously arranged in the length direction of the paper bag roll 2 at equal intervals at intervals of 164mm, and are equal in size and shape; the distance between each heat-sealing transverse sealing area 020512 and the adjacent easy-to-tear line 02023 is 5mm. In the process of forming paper bag roll 2, the front and back inner wall surfaces of paper bag roll 2 in every heat-sealing transverse sealing area 020512 are completely heat-sealed by using heat-bonding mode, and the number of heat-sealing transverse sealing areas 020512 in said packaging product example is 501.

No-input padding area 020521:

after the processes of folding and forming, heat seal back sealing and heat seal transverse sealing, the area between the upper and lower adjacent heat seal transverse sealing areas 020512 is an input-free filling area 020521, the input-free filling areas 020521 are equidistantly arranged in parallel in the length direction of the paper bag roll 2 at intervals of 10mm, the height of the input-free filling area 020521 is 164mm, and the number of the input-free filling areas 020521 is 500.

Easy-tear line 02023:

the flat PP laminated paper 0201 with the unfolding width of 270mm for forming from the paper bag roll 2 is formed into the width direction of the non-inner wall surface side of the paper bag roll 2 after forming, easy-to-tear lines 02023 are formed by adopting a laser cutting process, and the parallel equidistant distance of each easy-to-tear line is 174mm. The easy-to-tear line 02023 is only generated on the outer layer of the PP laminating paper 0201 in a laser cutting mode, namely the non-inner wall surface of the paper bag roll 2 is formed, the inner wall surface of the paper bag roll 2 still keeps integrity, the function of preventing the inner wall of the paper bag from being secondarily polluted is limited, and the paper bag can be regularly torn away from the easy-to-tear line 02023 during tearing and is utilized.

When in heat seal transverse sealing, the heat seal transverse sealing area 020512 is ensured to be 5mm away from the adjacent easy-to-tear line 02023, and the easy-to-tear line 02023 is just in the non-input filling area 020521 after the paper bag roll 2 is formed, is 5mm away from the adjacent heat seal transverse sealing area 020512, and is parallel to the width direction of the paper bag roll 2.

Paper bag roll end 02001:

two ends of the paper bag roll 2 in the head-tail direction after being formed are paper bag roll ends 02001, and the distances between the paper bag roll ends 02001 and heat seal transverse sealing areas 020512 at the head end and the tail end of the paper bag roll 2 are 10mm.

Compared with the existing product, the packaging product has the following beneficial effects: the core-free single-folded PP laminated paper bag roll 2 with the easy-to-tear line adopts a core-free structure, simplifies the product structure and reduces the product material cost. The structural unit formed by the non-input filling areas 020521 and the upper and lower adjacent heat seal transverse sealing areas 020512 which are arranged on the paper bag roll 2 at equal intervals in parallel can be regarded as an independent paper bag with an empty inner wall in the middle and in a non-input filling state, and the whole paper bag roll 2 can be regarded as a rolled paper bag string formed by paper bags which are connected together in series. When the paper bag is used, the paper bag easy-tearing line 02023 is torn off from the paper bag roll 2 to form a paper bag with an opening at one end. The technical scheme of the product can ensure that the paper bag can be conveniently torn off along the easy-to-tear line 02023 when in use; on the paper bag roll 2, the inner paper bag is covered and protected layer by the outer paper bag, so that the inner paper bag is still not easily influenced by the external sanitary environment; meanwhile, the paper bag roll 2 is easier to stack neatly than scattered paper bags, and the standardized service of on-site packaging of merchants is easy to realize;

to better illustrate this example-core-free single-folded PP laminated paper roll 2 with easy tear lines, a brief description of the forming steps is given below:

step 1 depends on an embodiment shown in the attached drawing 1, namely PP laminated paper 0201 used for forming an inner core-free single-folded PP laminated paper bag roll 2 with an easy-to-tear line is unfolded to be planar, and the schematic diagram is shown in the attached drawing 3:

the paper bag roll 2 adopts PP film-coated paper 0201 with base paper being matte powder paper (the thickness specification of the base paper is 0.11 mm) and single-side film coating (the thickness of a film coating layer is 20 g/square meter). In the attached drawing 3, the PP laminated paper 0201 with a width of 270mm and a plane shape is unfolded, the surface facing the observer is the PP laminated layer surface, the surface is the inner wall surface after the paper bag roll 2 is formed, and the left boundary line 02011 and the right boundary line 02012 are parallel to the length direction of the paper bag roll 2 and are a left boundary and a right boundary which are unfolded with a width of 270mm of the PP laminated paper 0201 before the paper bag roll 2 is formed.

And 2, step: in order to rely on an embodiment shown in the attached figure 1, namely a PP laminated paper 0201 unfolding plane used for forming a core-free single-folded PP laminated paper bag roll 2 with an easy-tearing line, an easy-tearing line 02023 is processed and formed in the width direction of the non-inner wall surface side of the paper bag roll 2 after forming, and the schematic diagram is shown in the attached figure 4:

and easy-to-tear lines 02023 are formed by processing through a laser cutting process in the width direction of the non-inner wall surface side of the paper bag roll 2 after the PP laminating paper 0201 is formed into an unfolded plane, wherein the easy-to-tear lines are parallel, and the parallel interval distance is 174mm. The easy-to-tear line 02023 can be generated only on the outer layer of the PP laminating paper 0201 (namely the non-inner wall surface of the paper bag roll 2 after forming) by adopting a laser cutting mode, and the inner wall surface of the paper bag roll 2 still keeps intact.

Step 3 is based on an embodiment shown in the attached drawing 1, namely, the unfolded single-folded-edge PP laminated paper bag roll without an inner core with an easy-tearing line 2 is planar PP laminated paper 0201 on the left and right sides, and the PP laminated paper is folded into the PP laminated paper by 180 degrees for one-time forming, wherein schematic diagrams are shown in the attached drawings 5 and 6:

the left side and the right side of the planar PP laminating paper 0201 are unfolded and folded 180 degrees into the PP laminating paper relatively to form a left folding line 02021 and a right folding line 02022 in one step. The left and right hemline lines 02021 and 02022 are parallel to each other, are consistent with the length direction of the paper bag roll 2, and have the same distance of 70mm from the left and right boundary lines;

after the folding forming, overlapping of 10mm in width is realized by the left side and the right side of the PP laminating paper 0201 with left and right boundary lines 02011 and 02012 as boundaries, and meanwhile, the PP laminating layer surface of the PP laminating paper 0201 becomes the inner wall surface after the folding forming.

Step 4 depends on an embodiment shown in the attached figure 1, namely the PP laminated paper 0201 used for forming the non-inner core single-folded PP laminated paper bag roll 2 with the easy-to-tear line is folded by 180 degrees to complete heat seal back sealing, and the schematic diagram is shown in the attached figure 7:

after folding and forming, in the overlapping area with the width of 10mm and taking the left boundary line 02011 and the right boundary line 02012 as boundaries on the left side and the right side of the PP laminating paper 0201, the heat seal back seal closing of the paper bag roll 2 is realized by using a heat bonding mode, the heat seal back seal closing implementing area is called a heat seal back seal area 020112, in the example, the whole overlapping area is completely heat seal closed, so the width of the heat seal back seal area 020112 is 10mm.

Step 5 is based on an embodiment shown in the attached figure 1, namely PP laminated paper 0201 for forming an inner core-free single-folded PP laminated paper bag roll 2 with easy-to-tear lines is formed by continuous equidistant heat sealing and transverse sealing, and the schematic diagram is shown in the attached figure 8:

the length of each heat-seal transverse sealing area 020512 is limited by the width of the paper bag roll 2; the length of the heat-seal transverse sealing area 020512 is equal to the width of the paper bag roll by 130mm, and the height of each heat-seal transverse sealing area 020512 in the length direction of the paper bag roll 2 is 10mm; the heat-seal transverse sealing areas 020512 are continuously arranged in the length direction of the paper bag roll 2 in parallel at equal intervals at intervals of 164mm, and are equal in size and shape; the distance between each heat-sealing transverse sealing area 020512 and the adjacent easy-to-tear line 02023 is 5mm. In the process of forming the paper bag roll 2, the front and back inner wall surfaces of the paper bag roll 2 in each heat-seal transverse sealing area 020512 are completely sealed in a heat-seal mode, and in the forming of the paper bag roll 2 of the embodiment, the heat-seal is realized in 501 heat-seal transverse sealing areas 020512.

After heat sealing and transverse sealing, an area between upper and lower adjacent heat sealing and transverse sealing areas 020512 becomes an input-free filling area 020521; the non-input filling areas 020521 are arranged in parallel at equal intervals in the length direction of the paper bag roll 2, and the interval distance is 10mm; the no-input filled area 020521 is 164mm in height and 500 in number.

After the 1 st heat-sealed transverse sealing area 020512 is formed by heat bonding, the heat-sealed transverse sealing area 020512 is reserved, and a position 10mm away from the heat-sealed transverse sealing area 020512 is cut off to form a paper bag roll end 02001.

After the 501 th heat-sealed transverse sealing area 020512 is formed by heat bonding, the heat-sealed transverse sealing area 020512 is reserved, and a position 10mm away from the heat-sealed transverse sealing area 020512 is cut off to form another paper bag roll end 02001.

And step 6, winding and rolling the PP film paper 0201 used for forming the core-free single-folded PP film paper bag roll 2 with the easy-tearing line on the core 1 after heat sealing and transverse sealing at equal intervals according to an embodiment shown in the attached drawing 1. And after finishing rolling, taking out the inner core 1, and finishing to obtain the inner core-free single-folded PP laminated paper bag roll 2 with the easy-to-tear line, wherein the schematic diagrams are shown in the attached figures 9 and 10:

the expanded planar PP laminating paper 0201 is wound and rolled on an inner core 1 with the inner diameter of 76mm, the outer diameter of 86mm and the length of 130mm of nylon PA 6 after being subjected to equidistant heat sealing and transverse sealing molding. And after the rolling is finished, taking out the inner core 1, and finally obtaining the inner core-free single-folded PP laminated paper bag roll 2 with the easy-to-tear line.

Step 7 is based on an embodiment shown in the attached drawing 1, namely, an inner core-free single-folded PP laminated paper bag roll 2 with an easy-to-tear line, and a single paper bag is torn down along the easy-to-tear line 02023 to form a paper bag with an opening at one end, and the schematic diagram is shown in the attached drawings 11 and 12:

when the paper bag needs to be used, the paper bag is torn down along the easy-to-tear line 02023 to form the paper bag with an opening at one end.

The paper bag with one open end of the release paper bag roll 2 is shown in fig. 11 and 12 in a schematic plan view and a schematic view in which the opening is opened.

Example two

Product example two-no-core three-fold edge band color-coded PLA coated paper roll 20 with tear lines, see the accompanying drawings 13, 14 of the specification and the forming implementation steps thereof in fig. 15-24: an example of a coreless soft-packing composite paper bag roll with easy-tearing lines-a coreless three-fold side band color code PLA laminated paper bag roll 20 with easy-tearing lines.

The inner core-free three-fold side band color code PLA laminated paper bag roll 20 with the easy-tearing line adopts an inner core-free structure, the raw material of the paper roll is flexible package composite paper, and the composite paper is PLA laminated paper 2011 which is made of kraft paper (the thickness specification of the base paper is 0.10 mm) and single-side laminated PLA (the thickness of a laminated layer is 25 g/square meter); fig. 15 shows that PLA laminated paper 2011 having a flat shape and an expanded width of 430mm is formed by expanding, processing to form easily torn lines, folding and forming, heat sealing and back sealing, heat sealing and transverse sealing, rolling and other processes, and 250 paper bags (the width of the sealed paper bag is 170mm, and the height of the sealed paper bag is 184 mm) which are connected in series in the length direction and have empty non-input filling states in the middle of the inner walls are formed. The paper bag roll 20 mainly has the following roll structural characteristics on the formed roll: the left boundary line 20111, the right boundary line 20112, the color scale 20121, the easy-to-tear line 20122, the left broken line 1/2/3 20131/20132/20133, the right broken line 1/2/3 20134/20135/20136, the heat sealing back sealing area 201112, the heat sealing transverse sealing area 201612, the non-input filling area 201621 and the paper bag roll end 20101. The entire paper bag roll 20 may be considered as a rolled paper bag string of individually sealed, serially connected, closed paper bags.

Left and right borderlines 20111, 20112:

the left and right boundaries of the PLA laminated paper 2011, which is flat and has a spread width of 430mm for forming the paper bag roll 20, are parallel to the length direction of the paper bag roll 20; after the PLA laminating paper 2011 is turned over and formed, the left boundary line 20111 and the right boundary line 20112 are used as boundaries on the left side and the right side of the PLA laminating paper 2011 to achieve overlapping, and the width of an overlapping area is 10mm.

Color scale 20121:

color marks 20121 are continuously printed on the outer surface of the paper bag roll 20 at equal intervals in parallel (the color marks can be identified by a sensor), namely the inner wall surface of the non-PLA lamination of the planar composite paper 2011 with the spread width of 430mm used before the forming of the paper bag roll; the size of the color code is 20MM X10mm, the equidistant spacing distance of the color code in the length direction is 164mm, and the distance from the center of the color code to the left boundary line is 45mm.

The left edge folding line 1/2/3 20131/20132/20133 and the right edge folding line 1/2/3 20134/20135/20136:

the paper bag roll 20 is unfolded to be in a plane shape and is positioned on the left side and the right side of PLA laminating paper 2011, the PLA laminating paper 2011 is symmetrically folded three times to generate a left folding line 1/2/3 20131/20132/20133 and a right folding line 1/2/3 20134/20135/20136, all the folding lines are parallel to each other, the spacing distance is 20mm, and the PLA laminating paper is consistent with the length direction of the paper bag roll 20; the left dashed line 1 20131 is 90mm from the left boundary line 20111, and the right dashed line 1 20134 is 90mm from the right boundary line 20112. On the unfolding plane of the PLA laminated paper 2011, the closest crease line to the center of the PLA laminated paper 2011 in the left and right crease lines is a first left and right crease line, where the left crease line 3 20133 and the right crease line 3 20136 are first left and right crease lines.

The specific folding mode of the left and right hemlines is as shown in fig. 17, the PLA laminated paper 2011 which is unfolded to be in a plane shape has the left and right sides folded 180 degrees in opposite PLA laminated paper tissue to generate a left hemline 3 20133 and a right hemline 3 20136, then the PLA laminated paper 2011 is folded 180 degrees in opposite directions to generate a left hemline 2 20132 and a right hemline 2 20135, and finally the PLA laminated paper tissue is folded 180 degrees in opposite directions to generate a left hemline 1 20131 and a right hemline 1 20134.

After the left and right sides of the PLA laminating paper 2011 are respectively folded and formed three times in the above manner, the overlapping width of 10mm is realized by using the left boundary line 20111 and the right boundary line 20112 as boundaries on the left side and the right side of the PLA laminating paper 2011, the left edge line 1/3 20131/20133 is a left side width boundary of the paper bag roll 20, the right edge line 1/3 20134/20136 becomes a right side width boundary of the paper bag roll 20, and the width of the paper bag roll 20 is 170mm.

Heat-seal back seal area 201112:

in the heat seal process after the folding and forming, the paper bag roll 20 is formed by unfolding and is unfolded to be planar PLA laminating paper 2011 left and right sides, and in the overlapping width 10mm area taking the left boundary line 20111 and the right boundary line 20112 as boundaries, the heat seal back seal closing of the paper bag roll 20 is realized by utilizing a heat bonding mode, the heat seal back seal closing implementation area is called a heat seal back seal area 201112, the whole overlapping area is completely heat-sealed in the example, and the heat seal back seal area width is 10mm.

Heat-sealed lateral seal area 201612:

the length of each heat seal transverse sealing zone 201612 is bounded by the width of the paper bag roll 20; the length of the heat-seal cross-seal area 201612 in this example is equal to 170mm the width of the paper bag roll 20, and the height of the heat-seal cross-seal area 201612 in the length direction of the paper bag roll 20 is 10mm; in the heat seal transverse sealing process, the interval distance of the heat seal transverse sealing areas 201612 and the corresponding color codes 20121 in the length direction of the paper bag roll 20 is kept to be 20mm, and the interval distance of the adjacent heat seal transverse sealing areas 201612 of the paper bag roll 20 is indirectly ensured to be 164mm; in the process of forming the paper bag roll 20, the inner front and rear walls of the paper bag roll 20 in each heat-seal transverse sealing zone 201612 are completely heat-sealed by heat bonding, in this example 251 heat-seal transverse sealing zones 201612.

No input padding area 201621:

after the processes of folding and forming, heat seal back sealing and heat seal transverse sealing, the area between the upper and lower adjacent heat seal transverse sealing areas 201612 is a non-input filling area 201621; the no-input filled areas 201621 are equidistantly spaced apart in parallel along the length of the paper bag roll 20 by 10mm, and the no-input filled areas 201621 are 164mm in height and 250 in number.

Easy tear lines 20122:

the PLA laminating paper 2011 which is formed into a plane shape and has the spread width of 430mm and is used for forming the paper bag roll 20 is processed into easy-to-tear lines 20122 penetrating all layers of the composite paper in the width direction of the non-inner wall surface side (the same side with the color marks) of the paper bag roll 20 by adopting the traditional dotted line cutter process, and the parallel equidistant distance of the easy-to-tear lines is 174mm. The traditional dotted line knife process can punch through all layers of the composite paper to form an easily torn dotted line when the PLA laminating paper 2011 is produced, and a paper bag is directly torn away and utilized along the easily torn line 20122 by a hand when the traditional dotted line knife process is used. The distance between each color mark 20121 and the adjacent easy-to-tear line 20122 is 15mm;

when in heat seal transverse sealing, the heat seal transverse sealing area 201612 is ensured to be 20mm away from the adjacent color code 20121. After the paper bag roll 20 is formed, the easy tear lines 20122 are exactly in the non-input filling area 201621, 5mm away from the adjacent heat seal transverse sealing area 201612, and parallel to and consistent with the width direction of the paper bag roll 20.

Paper bag roll end 20101:

after the paper bag roll 20 is formed, the two tail ends in the length direction are the paper bag roll ends 20101; the distance between the end 20101 of the paper bag roll and the heat-seal transverse sealing areas 201612 at the head end and the tail end of the paper bag roll 20 is 10mm.

Compared with the existing product, the beneficial effects of the embodiment are as follows: the core-free three-fold edge band color code PLA laminated paper bag roll 20 with the easy-to-tear line has the advantages that the core-free structure is adopted, and the product structure and the material cost are reduced. Meanwhile, the paper bag roll 20 indirectly ensures that the interval distances of the adjacent heat seal transverse sealing areas 201612 of the paper bag roll 20 are equal by keeping the center distances of the heat seal transverse sealing areas 201612 and the corresponding color codes 20121 in the length direction of the paper bag roll 20 equal. The structural unit consisting of the paper bag roll 20 with the non-input filling areas 201621 and the upper and lower adjacent heat-seal transverse sealing areas 201612 arranged in parallel at equal intervals can be regarded as an independent paper bag with the inner wall being empty in the middle and in a non-input filling state, and the whole paper bag roll 20 can be regarded as a rolled paper bag string consisting of paper bags connected in series. The paper bag is torn along the easy-tear line 20122 only when in use, and then is separated from the paper bag roll 20 to form a paper bag with one open end. The technical scheme of the product can ensure that the paper bag can be conveniently torn down along the easy-to-tear line 20122 when in use; on the paper bag roll 20, the inner paper bag is covered and protected layer by the outer paper bag, so that the inner paper bag is still not easily influenced by the external sanitary environment; meanwhile, the paper bag roll 20 is easier to stack and is more orderly than scattered paper bags, and the standardized service of on-site packaging of merchants is easier to realize;

to better illustrate this example two-core-free tri-fold band color-coded PLA coated paper roll with tear lines 20, a brief description of the forming example steps is provided below:

step 1 is realized by depending on an embodiment shown in the attached drawing 13, namely, a PLA laminated paper 2011 which is used for forming an inner core-free three-fold sideband color code PLA laminated paper bag roll 20 with an easy-to-tear line and has a width of 430mm is unfolded to be planar, and the schematic diagram is shown in the attached drawing 15:

the paper bag roll 20 adopts PLA laminating paper 2011 which takes kraft paper as base paper (the thickness specification of the base paper is 0.10 mm) and single-side laminating PLA (the thickness of a laminating layer is 25 g/square meter); fig. 15 shows PLA laminated paper 2011 having a spread width of 430mm and being planar; the surface facing the observer is a PLA film lamination layer, which is the inner wall surface of the paper bag roll 20 after the paper bag roll 20 is formed, and the left and right boundary lines 20111 and 20112 are parallel to the length direction of the paper bag roll 20 and spread to form the left and right boundary lines with the width of the PLA film lamination paper 2011 being 430mm before the paper bag roll 20 is formed.

Step 2 is to rely on an embodiment shown in fig. 13, that is, an unfolded planar PLA laminated paper 2011 used for forming an inner core-free three-fold sideband color code PLA laminated paper bag roll 20 with an easy-tear line, print color codes 20121 on the reverse side (the non-inner wall surface of the paper bag roll 20 after forming) and process to form an arrangement of easy-tear lines 20122, and the schematic diagram is shown in fig. 16:

the surface of the PLA laminating paper 2011 facing the observer is a PLA laminating layer surface, the color marks 20121 are equidistantly arranged and printed on the reverse side of the PLA laminating paper in the length direction of the paper bag roll at intervals of 164mm (the reverse side surface of the paper bag roll 20 after being formed), the size of the color mark 20121 is 20mmX10mm, and the distance between the center of each color mark 20121 and the left boundary line 20111 is 45mm.

The easy-to-tear lines 20122 penetrating through all the combined layers are formed on the same plane of the printed color code 20121 of the PLA laminating paper 2011 by adopting a traditional dotted line cutter process, the traditional dotted line cutter process can punch through all the layers of the combined paper on the PLA laminating paper 2011 to form the easy-to-tear dotted lines, all the easy-to-tear lines are parallel, and the parallel spacing distance is 174mm. Each color patch 20121 is kept spaced 15mm from an adjacent tear line 20122.

Step 3 is based on an embodiment shown in fig. 13, namely, the unfolded planar PLA coated paper 2011 left and right sides for forming the non-inner core three-fold sideband color code PLA coated paper bag roll 20 with the easy-tearing line is folded and formed, and the schematic diagrams refer to fig. 17 and 18:

the paper bag roll 20 is unfolded to be in a plane shape and is positioned on the left side and the right side of PLA laminating paper 2011, the PLA laminating paper 2011 is symmetrically folded three times to generate a left folding line 1/2/3 20131/20132/20133 and a right folding line 1/2/3 20134/20135/20136, all the folding lines are parallel to each other, the spacing distance is 20mm, and the PLA laminating paper is consistent with the length direction of the paper bag roll 20; the left dashed line 1 20131 is 90mm from the left boundary line 20111, and the right dashed line 1 20134 is 90mm from the right boundary line 20112. On the unfolding plane of the PLA laminated paper 2011, the closest crease line to the center of the PLA laminated paper 2011 in the left and right crease lines is a first left and right crease line, where the left crease line 3 20133 and the right crease line 3 20136 are first left and right crease lines.

The specific folding mode of the left and right hemlines is as shown in fig. 17, the PLA laminated paper 2011 which is unfolded to be in a plane shape has the left and right sides folded 180 degrees in opposite PLA laminated paper tissue to generate a left hemline 3 20133 and a right hemline 3 20136, then the PLA laminated paper 2011 is folded 180 degrees in opposite directions to generate a left hemline 2 20132 and a right hemline 2 20135, and finally the PLA laminated paper tissue is folded 180 degrees in opposite directions to generate a left hemline 1 20131 and a right hemline 1 20134.

After the fold forming, the left side and the right side of the PLA laminating paper 2011 are overlapped by taking the left boundary line 20111 and the right boundary line 20112 as boundaries, the width of the PLA laminating paper is 10mm, the left fold line 1/3 20131/20133 and the right fold line 1/3 20134/20136 are left and right boundaries of the fold forming width of 170mm, and meanwhile, the PLA laminating layer of the PLA laminating paper 2011 becomes the inner wall surface after the fold forming.

Step 4 is to complete heat seal back sealing after turning over and forming PLA laminated paper 2011 used for forming an inner core-free three-fold sideband color code PLA laminated paper bag roll 20 with an easy-tear line according to an embodiment shown in the attached drawing 13, and the schematic diagram is shown in the attached drawing 19:

after the paper bag is folded and formed, the heat seal back seal closing of the paper bag roll 20 is realized by using a heat bonding mode in an overlapping area which is 10mm wide and is bounded by a left boundary line 20111 and a right boundary line 20112 at the left side and the right side of the PLA laminating paper 2011, the heat seal back seal closing implementing area is called a heat seal back seal area 201112, in the example, the whole overlapping area is completely heat sealed, so the width of the heat seal back seal area is 10mm.

Step 5 is based on an embodiment shown in fig. 13, namely PLA coated paper 2011 used for forming an inner core-free three-fold sideband color code PLA coated paper bag roll 20 with an easy-tear line is subjected to heat seal back sealing and then is subjected to heat seal transverse sealing and forming by utilizing color code positioning at continuous equal intervals, and the schematic diagram is shown in fig. 20:

the length of each heat-seal transverse sealing area 201612 is bounded by the width of the paper bag roll 20; the length of the heat-sealing lateral sealing area 201612 is equal to 170mm of the width of the paper bag roll, and the height of the heat-sealing lateral sealing area 201612 in the length direction of the paper bag roll 20 is 10mm; in the process of forming the paper bag roll 20, the front inner wall surface and the rear inner wall surface of the paper bag roll 20 in each heat-seal transverse sealing area 201612 are completely sealed in a heat-seal mode by a heat bonding mode; keeping the same distance of 20mm between the heat seal cross seal zones 201612 and their corresponding color codes 20121 in the length direction of the paper bag roll 20 indirectly ensures that the same distance of 164mm between the adjacent heat seal cross seal zones 201612, and realizes heat bonding in 251 heat seal cross seal zones 201612 in the forming of the paper bag roll 20 of this example.

After heat-seal transverse sealing, the heat-seal transverse sealing areas 201612 are arranged in the length direction of the paper bag roll 2 at equal intervals and in equal size and shape after the paper bag roll 20 is formed; the area between the upper and lower adjacent heat seal cross seal zones 201612 becomes an input-free filling zone 201621; each non-input filling area 201621 is arranged in parallel at equal distance in the length direction of the paper bag roll 20, and the interval distance is 10mm; the no-input fill areas 201621 are 164mm in height and 250 in number.

After the heat seal cross-seal area 1 201612 is heat sealed, the heat seal cross-seal area 201612 is retained and cut at a distance of 10mm from the heat seal cross-seal area 201612 to form a paper bag roll end 20101.

After the 251 st heat-sealed lateral sealing area 201612 is heat-bonded and formed, the heat-sealed lateral sealing area 201612 is retained and cut at a distance of 10mm from the heat-sealed lateral sealing area 201612 to form another paper bag roll end 20101.

Step 6 is based on an embodiment shown in fig. 13, namely PLA laminated paper 2011 used for forming the core-free three-fold sideband color code PLA laminated paper bag roll 20 with the easy-to-tear line is wound and rolled on the core 10 after heat seal and transverse seal. And after the rolling is finished, taking out the inner core 10 to finally obtain the paper bag roll 20 without the inner core, the three-fold side band color code PLA laminated paper with the easy-tearing line, wherein the schematic diagram is shown in the attached drawing 21,22:

after the PLA laminating paper 2011 which is unfolded in a plane shape is thermally sealed transversely, the PLA laminating paper 10 which is wound and rolled on the nylon PA 6 core 10 with the inner diameter of 76mm, the outer diameter of 86mm and the length of 170mm is wound and rolled. And after the rolling is finished, taking out the inner core 10 to finally obtain the inner core-free three-fold edge band color code PLA laminating paper bag roll 20 with the easy-to-tear line.

Step 7 is based on an embodiment shown in fig. 13, namely, an inner core-free three-fold edge band color-coded PLA laminated paper bag roll 20 with an easy-tear line, and the paper bag is torn down along the easy-tear line 20122 to form a paper bag with an opening at one end, which is schematically shown in fig. 23 and 24:

when the paper bag needs to be used, the paper bag is torn from the paper bag roll 20 along the easy-tear line 20122 to form the paper bag with one open end.

The plain and open paper bags of the release bag roll 20 are shown at 23 and 24, respectively.

Although two embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention. For example, in the following modification of the second product example, in the folding process of the PLA laminated paper 2011 which is in a planar shape and is shown in fig. 23 before heat sealing back seal, a folding line 4 20137 is formed by folding the PLA laminated paper 2011 out of the paper by 180 degrees at a position 5mm from the right boundary line 20112, so that the left side and the right side of the PLA laminated paper 2011 form a 5mm overlapping area after being completely folded and formed, heat sealing back seal is realized in the 5mm overlapping area, and a heat sealing back seal area 201112 is formed. Also, for example, a multi-layer composite paper having a thickness of 0.1mm kraft paper + a thickness of 0.009mm aluminum foil layer + a thickness of 25 g/m PE layer is used in place of the composite paper material in the above example; for another example, PE laminated composite paper is used to replace the composite paper material in the above example; the composite paper material in the above example is replaced by Michem Coat 95 coating of Mackemen, inc., which is coated paper regenerated with paper pulp and has heat sealing property; the composite paper adopts double-sided film coating or coating to replace single-sided film coating or coating in the example; the thickness of the heat seal characteristic layer of the composite paper is not limited to the thickness in the examples, as long as the heat seal strength of the paper bag roll after heat seal can meet the relevant national standard or regulation on the heat seal strength of the composite paper bag; the paper bag roll adopts the condition that the composite paper is multilayer composite paper consisting of kraft paper with the thickness of 0.1mm, aluminum foil layer with the thickness of 0.009mm and PE layer with the thickness of 25 g/square meter, and the added easy-tearing line adopts a non-penetrating form: the easy-tearing line only penetrates through the outer layer of the paper bag roll, namely the kraft paper base paper layer, but the inner aluminum foil layer and the PE layer are still kept complete; the characteristic dimensions of the products of the paper roll packaging products are not limited to the dimensions in the above examples; the left and right boundary lines of the paper bag roll are curved instead of straight lines in the above example; the heat-sealed transverse sealing area takes a rectangular form other than the above example; the heat-seal transverse sealing area is not perpendicular to the folding line instead of the perpendicular direction in the above example; the easy-to-tear lines and the width direction of the paper bag roll are not parallel and consistent but are in a non-parallel relationship, so that the parallel and consistent relationship shown in the first embodiment and the second embodiment is replaced; the positions of the easy-to-tear lines at two ends or one end of the paper bag roll are overlapped with the positions of the ends of the paper bag roll, namely the ends of the paper bag roll are arranged at the positions of the easy-to-tear lines at two ends or one end of the paper bag roll, and the like; the forming steps in the above examples are only for better illustration of the product itself, and are not limited to the implementation steps and modes shown herein, for example, the paper bag roll end is directly produced before the paper bag roll is formed, instead of the paper bag roll end being cut after the roll is formed, etc. in the examples; the scope of the invention is defined by the appended claims and equivalents thereof.

Claims (12)

1. The utility model provides a no inner core flexible package composite paper bag book with easily tear line, the paper bag book adopts the flexible package composite paper that has the heat seal characteristic, and satisfies national food sanitation requirement, and this composite paper can turn over a shaping and its base paper thickness be 0.04mm-0.25mm, paper bag book internal face is the composite aspect that has the heat seal characteristic of flexible package composite paper, present following roll body shaping structural characteristic key element after the shaping of paper bag roll: the composite paper bag roll is characterized in that the paper bag roll adopts a structure without an inner core and is additionally provided with an easy-to-tear line.

2. The soft-packing composite paper bag roll without inner core with easy-tear line as claimed in claim 1, wherein the soft-packing composite paper used in the paper bag roll has more than one composite layer in addition to the base paper layer, and the innermost layer (i.e. inner wall layer of the paper bag roll) is a composite layer with heat-sealing property.

3. The paper bag roll with the easy-to-tear line and the compound paper for the soft package without the inner core as claimed in claim 1, wherein the inner wall layer of the paper bag roll is a PP or PE film coated layer with heat sealing property.

4. The paper bag roll with the easy-to-tear line and the composite paper for the soft package without the inner core as claimed in claim 1, wherein the inner wall layer of the paper bag roll is a PLA PE film coating layer with heat sealing property and biodegradability.

5. The paper bag roll with the easy-tear line for the soft package without the inner core of the claim 1, wherein the inner wall layer of the paper bag roll is a coating layer which has heat sealing property and can be recycled with paper pulp.

6. The coreless, flexible package composite paper bag roll with the easy-tear line, according to claim 1, wherein the number of left and right hemlines of the paper bag roll is greater than or equal to three.

7. The coreless, flexible package composite paper bag roll with a tear line as claimed in claim 1, wherein the tear line of the paper bag roll is in the form of a tear line that penetrates through all layers of the composite paper.

8. The paper bag roll for soft package without inner core and with easy-to-tear line as claimed in claim 1, wherein the easy-to-tear line of the paper bag roll is in the form of non-penetrating type: that is, the inner wall layer or the internal composite layers of the paper bag roll still keep complete by only adding the easy-tearing line on the non-inner wall layer of the paper bag roll.

9. The coreless, flexible package composite paper bag roll with easy-tear lines as claimed in claim 1, wherein the easy-tear lines of the paper bag roll are in a parallel and consistent positional relationship with the width direction of the paper bag roll.

10. The coreless, flexible package composite paper bag roll with easy-tear lines as claimed in claim 1, wherein the easy-tear lines of the paper bag roll are not parallel to the width direction of the paper bag roll and are not parallel to each other.

11. The cored flexible packaging composite paper bag roll with the easy-tear line as claimed in claim 1, wherein the paper bag roll is provided with a position identification mark on the outer surface thereof, the position identification mark being recognizable by a sensor.

12. The coreless, flexible-package, composite paper bag roll with easy-tear lines as claimed in claim 1, wherein the easy-tear lines at either end of the paper bag roll overlap with the paper bag roll ends, i.e. the paper bag roll ends are at the easy-tear line at either end of the paper bag roll.

Images