CN216612257U - Oblique groove type paper bag - Google Patents

Abstract

The utility model discloses a paper bag in an inclined groove form, which belongs to the technical field of food and beverage paper bag packaging, wherein the paper bag adopts a paper-based composite packaging material with heat-sealing bonding characteristics, the inner wall surface of the paper bag is a composite layer surface with the heat-sealing bonding characteristics of the paper-based composite packaging material, and the paper bag comprises a left boundary, a right boundary, a bag body, a body sealing area, an upper opening edge, a lower bottom edge and a bottom sealing area after being formed. The last oral area of container bag all adopts the slant design nonparallel with container bag width direction with lower base, works as when the container bag is the flat state not struts the state, observes the container bag from the planar direction that paper bag width and height constitute of orthography, follows promptly the container bag is observed to the appearance elevation view of container bag, goes up the oral area and is the line form nonparallel with container bag width direction, and lower base and last oral area are the line form nonparallel for with container bag width direction with being on the same side, and the lower base is parallel with last oral area.

Description

Oblique groove type paper bag

Technical Field

The application relates to the technical field of food and beverage paper bag packaging, in particular to a disposable oblique groove paper base composite packaging material paper bag for food and beverage packaging.

Background

The existing common disposable oblique groove paper base composite packaging material paper bag used in drinking water areas of public places is characterized in that the paper bag is observed from a plane direction formed by the width and the height of the paper bag in a front view, when the paper bag is in a flat and non-expanded state, as shown in figure 14, the upper opening edge 020231 of the paper bag is in a curve which is not parallel to the width direction of the paper bag, the lower bottom edge 020232 of the paper bag still keeps a straight line which is consistent with the width direction of the paper bag, the upper opening edge 020231 and the lower bottom edge 020232 adopt different line forms which are not parallel to each other as shown in figure 14, the upper opening edge 020231 and the lower bottom edge 020232 of the paper bag need to adopt two different cutting modes in different directions in the manufacturing process, one mode is to adopt the curve which is not parallel to the width direction of the paper bag when the upper opening edge 020231 of the paper bag is manufactured, the other mode is to adopt the straight line cutting which is consistent with the width direction of the width direction when the lower bottom edge 020232 of the paper bag is manufactured, the same paper bag needs to adopt the two different cutting modes in different directions, especially when paper bags are manufactured in batches automatically by automatic paper bag processing and forming equipment, the complexity of the paper bag manufacturing process and the complexity of the required cutting device are increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems of the prior art that the complexity of the manufacturing process of the paper bag and the complexity of a required cutting device are caused by the non-parallel consistency of the upper opening edge 020231 and the lower bottom edge 020232 of the disposable paper-based composite packaging material paper bag with the inclined groove, and the paper bag is purposefully and simply designed to achieve the purpose of simplifying the manufacturing of the paper bag.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a container bag of oblique groove form, the container bag adopts the paper base composite packaging material that has heat-seal bonding characteristic, and the container bag internal face is the compound aspect that has heat-seal bonding characteristic of paper base composite packaging material, include left boundary, right boundary, the bag body, body seal district, upper lip limit, lower base and end seal district behind the container bag shaping. The last oral area of container bag all adopts the slant design nonparallel with container bag width direction with lower base, and when the container bag was the flat state not struts the state, the container bag was observed from the planar direction that paper bag width and height constitute of orthographic view, follows promptly the container bag is observed to the appearance elevation view of container bag, goes up the oral area and is the line form nonparallel with container bag width direction, and lower base and last oral area are the line form nonparallel for with container bag width direction with being, and the lower base is parallel with last oral area.

Preferably, the paper-based composite packaging material for paper bag forming is a paper-based composite packaging material with a composite layer on one side of a paper base.

Preferably, the paper-based composite packaging material for forming the paper bag is a paper-based composite packaging material with multiple composite layers or a paper-based composite packaging material with composite layers on two sides of the paper base.

Preferably, when the paper bag is in a flat and unfolded state, the paper bag is observed from a plane direction formed by the width and the height of the paper bag in front view, namely the paper bag is observed from an appearance front view of the paper bag, and a virtual structure straight line formed by the intersection of the upper opening edge and the left and right boundaries and the two intersection points formed by the intersection of the upper opening edge and the left and right boundaries are supposed to be connected and form an obtuse included angle between 95 degrees and 145 degrees or an acute included angle between 35 degrees and 85 degrees with the left boundary or the right boundary.

Preferably, when the container bag is the not state of strutting of planiform, follow the planar direction observation container bag that paper bag width and height constitute, follow promptly the paper bag is observed to the appearance elevation of container bag, and the upper lip is the diagonal line that is not parallel with container bag width direction, and the lower base and the upper lip of container bag are parallel, and lower base and upper lip are the diagonal line that is not parallel with container bag width direction with being.

Preferably, when the container bag was the platykurtic not state of strutting, observed the container bag from the plane direction that orthographic container bag width and height constitute, followed promptly the container bag is observed to the appearance elevation view of container bag, and the last lip is the curve nonparallel with container bag width direction, and the lower base and the last lip of container bag are parallel, and lower base and last lip are the curve nonparallel with container bag width direction together.

Preferably, the paper bag is provided with a position identification mark.

Preferably, when the paper bag is in a flat, non-spread state, the paper bag is viewed from the planar direction defined by the width and height of the paper bag in front view, that is, from the external front view of the paper bag, and part or all of the lower edge of the paper bag coincides with the area boundary line of the bottom seal region.

Preferably, when the container bag is the flat state of not strutting, follow the planar direction observation container bag that paper bag width and height constitute of orthographic view, follow promptly the container bag is observed to the appearance elevation of container bag, goes up the oral margin and is the not parallel diagonal line with container bag width direction, goes up oral margin and left boundary or right boundary and is from the obtuse angle contained angle between 95 degrees to 145 degrees or from the acute angle contained angle between 35 degrees to 85 degrees, and lower base and last oral margin are the not parallel diagonal line with container bag width direction with being simultaneously, and the lower base is parallel with last oral margin.

Preferably, when the container bag is the unfurled state of platykurtic, follow the planar direction observation container bag that paper bag width and height constitute, follow promptly the container bag is observed to the appearance elevation of container bag, and the upper lip is the curve that is not parallel with container bag width direction, and two crossing hypotheses that upper lip and left and right border intersect and form link to each other gained virtual construction straight line and left border or right border are from the obtuse angle contained angle between 95 degrees to 145 degrees or from the acute angle contained angle between 35 degrees to 85 degrees, and lower base and upper lip are the curve that is not parallel with container bag width direction with being simultaneously on the lower base, and the lower base is parallel with the upper lip.

Drawings

FIG. 1 is a schematic diagram of a PLA laminated paper bag in the form of an oblique groove in the embodiment of the present application, the paper bag having a shape when being spread along an upper edge of the mouth;

FIG. 2 is a front elevational view of a PLA laminated paper bag in the form of an oblique bevel as shown in FIG. 1 in a flat, unfolded condition;

FIG. 3 is a partial schematic view of the oblique groove type PLA laminated paper bag shown in FIG. 1, folded edge of which shows the overlapping of PLA laminated paper before heat sealing and bonding in the body sealing area;

FIG. 4 is a partial schematic view showing the overlapping of PLA laminated paper at the folded edge before heat-sealing and bonding forming in a body sealing area of a PLA laminated paper bag in the form of an oblique groove according to the second embodiment of the present application;

fig. 5 is an outline elevation view of the inclined groove type PLA laminated paper bag shown in fig. 4, showing the paper bag in a flat and unfolded state after molding;

FIG. 6 is a partial schematic view of a folded edge of PLA laminated paper before heat sealing and bonding forming in a body sealing area of a PLA laminated paper bag in the form of an oblique groove with color codes according to a third embodiment of the present application;

FIG. 7 is a front view of the flat, unfurled PLA bag of FIG. 6 in the form of a beveled color-coded bevel;

FIG. 8 is a schematic view of the PLA laminated paper bag shown in FIG. 6 in the form of an oblique bevel with color marks, the bag being stretched along the upper lip;

FIG. 9 is an elevational view of the paper bag of PLA laminated paper in the form of an oblique groove with color marks according to the fourth embodiment of the present application, wherein the paper bag has an S-shaped curve form at the upper edge and the lower edge and is in a flat and unfolded state;

FIG. 10 is a schematic view of a PP laminated paper bag in the form of a beveled mouth, which is stretched along the upper edge of the mouth, according to example V of the present application;

FIG. 11 is a front view of the PP laminated paper bag in the form of a beveled mouth shown in FIG. 10 in a flat, unfolded configuration;

FIG. 12 is a partial schematic view of a PP laminated paper bag in the form of a slope mouth shown in FIG. 10 showing a folded edge of the PP laminated paper before heat sealing and bonding;

FIG. 13 is an elevational view of the flat, unopened form of a bag of PP laminated paper according to example six of the present application, in the form of an oblique bevel;

fig. 14 is an elevational view of the general oblique-bevel paper-based composite packaging material paper bag of the background art in a flat, unfolded state.

The specific implementation mode is as follows:

specific embodiments of the present application will now be described with reference to the disclosed embodiments of the present specification and the accompanying drawings. It should be understood that although directional terms such as "front," "rear," "upper," "lower," "left," "right," "top," "bottom," "inner," "outer," and the like may be used herein to describe various example structural elements of the application, these terms are used herein for convenience of description only and are intended to be based on the example orientations shown in the figures.

Example one

Fig. 1 is a schematic diagram of an oblique groove type PLA laminated paper bag in the present embodiment, which is expanded along an upper rim 020231 to show the overall structure of the paper bag. The width of the paper bag is 70mm, and the total height is 150 mm. The paper bag adopts single-sided PLA film-coated paper with heat-sealing property, and the thickness of the film-coated paper is 0.1 mm. The paper bag comprises a left boundary 02021, a right boundary 02022, a body sealing area 020112, an upper mouth edge 020231, a lower bottom edge 020232, a bottom sealing area 020512 and a bag body 0205. Briefly, as shown in fig. 1, the inner wall surface of the paper bag is a PLA laminated layer, the left border 02021 is a left width border of the paper bag formed by the folded edge line, the right border 02022 is a right width border of the paper bag formed by the folded edge line, the bottom sealing region 020512 has a length extending from the left border 02021 to the right border 02022, all the front and rear inner walls of the paper bag extending from the left border 02021 to the right border 02022 within the height of the bottom sealing region 020512 are in a heat-seal, adhesive, sealed and closed state to realize a general paper bag bottom closing function, the bottom sealing region 020512 completely separates the upper and lower spaces in the paper bag, the part of the paper bag above the bottom sealing region 020512 is a bag body 0205, the body sealing region 020112 is in a heat-seal adhesive state, the heat-seal adhesive of the body 0205 is in a sealed and closed state, the upper mouth edge 020231 is an uppermost end port of the paper bag and is designed obliquely, and when the upper mouth edge 020231 is opened, the bottom edge 020232 is also angled toward the bottom end of the bag, and when the bag is flat and not stretched, the bottom edge 020232 and top mouth edge 02023 are both angled and parallel to each other as shown in fig. 2, and the bottom sealed region 020512 is located near the bottom edge 020232, so that food or beverage can be transferred through the stretched top mouth edge 020231 into the pouch 0205 for temporary storage. The paper bag of the first embodiment is further described with reference to the accompanying drawings 1, 2 and 3:

as shown in fig. 1, the upper opening 020231 is opened and closed to form a slope opening, and a common paper bag is closed at the bottom of the paper bag to store objects, wherein the objects are stored in the upper space of the bottom of the paper bag, the bottom sealing region 020512 in the embodiment is long from the left border 02021 to the right border 02022, all the front and rear inner walls of the paper bag extending from the left border 02021 to the right border 02022 in the height of the bottom sealing region 020512 are sealed and sealed by heat sealing to realize the bottom closing function of the common paper bag, the bottom sealing region 020512 completely separates the upper and lower spaces in the paper bag, and the part of the paper bag above the bottom sealing region 020512 is a 0205 bag body. Food or beverage can enter the bag body 0205 through the opened upper opening edge 020231, and the food or beverage entering the bag body 0205 cannot directly leak from the lower bottom edge 020232 due to the heat sealing, adhesion, sealing, closing and obstruction of the bottom sealing area 020512. The bottom seal 020512 is proximate the lower mouth edge 020232. The underseal region 020512 is 5mm in height and has a length extending from left border 02021 to right border 02022. As shown in fig. 1, the body sealing region 020112 is in a heat-seal bonded state, and the surface of the bag body 0205 is in a sealed closed state by the heat-seal bonding of the body sealing region 020112. When the upper opening edge 020231 is spread, the bag body 0205 is also spread together with the upper opening edge 020231 and displays the storable space in the bag body 0205, when food or beverage enters the paper bag 0205 from the upper opening edge 020231, the surface of the bag body 0205 is sealed and closed, so that the food or beverage entering the bag body 0205 cannot leak out of the surface side of the bag body 0205, and the specific forming of the body sealing area 020112 will be described in the introduction of fig. 3.

Fig. 2 is a PLA coated paper bag in the form of an oblique bevel as shown in fig. 1, the bag being in a flat, unbroken frontal appearance. The left border 02021 is a left width border formed by the folding crease lines of the paper bag, the right border 02022 is a right width border formed by the folding crease lines of the paper bag, the left and right direction between the left border 02021 and the right border 02022 as seen in the paper bag appearance front view shown in fig. 2 is the width direction of the paper bag, and when the paper bag is not unfolded, the front and rear inner wall surfaces of the paper bag body 0205 are folded and attached. As seen in the front view of the outer shape shown in fig. 2, the upper mouth 020231 is in a straight line when it is flat and not spread, and forms an upward inclined angle with the left boundary 02021 formed by the folded edge line, and in this embodiment, the angle between the left boundary 02021 and the upper mouth 020231 is specifically 116 degrees, and the conversion results in that the upper mouth 020231 forms a non-parallel 26 degree angle with the width direction of the paper bag. The bottom edge 020232 is also folded and fitted in an oblique straight line in the flat state as shown in fig. 2, and is parallel to the upper mouth edge 020231. As shown in fig. 2, lower bottom edge 020232 is 3mm from bottom seal 020512 in the height direction of the paper bag. Specifically, in the process of heat-seal bonding and forming the bottom seal area 020512, all the front and back inner wall surfaces of the paper bag extending from the left border 02021 to the right border 02022 within the height of the bottom seal area 020512 are heat-seal bonded and sealed to realize the bottom closing function of a common paper bag, as shown in fig. 2, the boundary line of the area formed by heat-seal bonding of the bottom seal area 020512 is parallelogram, and the upper and lower boundary lines of the area of the bottom seal area 020512 are parallel to the upper opening edge 020231 and the lower bottom edge 020232.

Fig. 3 is a PLA laminated paper bag in the form of an oblique groove shown in fig. 1, which is a partial schematic view of the overlapped PLA laminated paper before the heat-sealing and bonding formation of the body sealing area, and the folded edge is used for showing the specific formation process of the body sealing area 020112. The space between the left border 02021 and the right border 02022 of the paper bag is the width of the paper bag, and is specifically 70 mm. As shown in fig. 3, the single-sided PLA coated paper has a left end 02041 and a right end 02042, the side facing the observer is a PLA coated layer, the side of the PLA coated paper eventually forms the inner wall surface of the paper bag, the distance between the left end 02041 and the left boundary 02021 is set to be greater than 5mm, the distance between the right end 02042 and the right boundary 02022 is set to be greater than 5mm, the PLA coated paper with a width of 145mm is unfolded and folded along the left boundary 02021 and the right boundary 02022 respectively towards the observer, a PLA coated paper overlapping area with a width of 5mm is formed between the left end 02041 and the right end 02042 after being folded flat, a body sealing area 020112 is formed in the PLA coated paper overlapping area with the width of 5mm by heat sealing and bonding, the surface of the bag body 0205 is in a sealed closed state by heat sealing and a storage space is formed in the bag body 0205. It should be noted that the width of the overlapped area of the PLA laminated paper is 5mm, but the width of the heat-seal bonding of the body sealing area 020112 may be less than or equal to 5mm, as long as the surface of the bag body 0205 is in a sealed closed state by the heat-seal bonding of the body sealing area 020112, and the heat-seal bonding is not limited to the width of the overlapped area of the whole PLA laminated paper.

The inventor of the present application has noticed that, as described in the background art, when the conventional disposable oblique-bevel-groove paper-based composite packaging material paper bag used in public drinking areas is observed from the plane direction formed by the width and height of the paper bag in front view, and the paper bag is in a flat unfolded state, as shown in fig. 14, the upper mouth 020231 of the paper bag is in a curve not parallel to the width direction of the paper bag, the lower bottom edge 020232 of the paper bag still maintains a straight line consistent to the width direction of the paper bag, the upper mouth 020231 and the lower bottom 020232 adopt different line forms which are not parallel to each other as shown in fig. 14, the upper mouth 020231 and the lower bottom 020232 of the paper bag need to be cut in two different ways in different directions in the manufacturing process, one is to cut in a curve not parallel to the width direction of the paper bag when the upper mouth 020231 of the paper bag is manufactured, the other is to cut in a straight line consistent to the width direction of the lower bottom 020232 of the paper bag, the same paper bag needs to be cut in different modes in two different directions, and especially when the paper bag is automatically manufactured in batches by adopting automatic paper bag processing and forming equipment, the process complexity of paper bag manufacturing and the complexity of a required cutting device are increased. And this application the beneficial effect of container bag: as shown in fig. 1, the upper opening 020231 is opened and closed to form a slope mouth when it is opened, so that the food or beverage temporarily stored in the bag can be fed into the mouth of a person through the slope mouth, and the bag can be used as a disposable paper bag. Also, as shown in the front view of the figure 2, the lower bottom edge 020232 and the upper mouth edge 020231 are arranged parallel to each other in the case where the upper mouth edge 020231 and the left border 02021 formed by the folded crease line are in an upwardly inclined angular relationship when the paper bag is not spread flat. The design of the lower bottom edge 020232 and the upper mouth edge 020231 that are simultaneously inclined and parallel to each other as shown in fig. 2 enables the paper bag to be cut in the same direction and in the same cutting mode in the same direction when the paper bag is manufactured into the lower molded bottom edge 020232 and the upper mouth edge 020231, and the two different cutting modes in different directions are not needed as mentioned in the background art, so that the production process of a production line is simplified, and the effect of the cutting device is simplified. Meanwhile, as shown in the front view of the figure 2, when the paper bag is not spread in a flat state, the upper and lower boundary lines of the area 020512 of the bottom sealing area of the paper bag are parallel to the upper opening edge 020231 and the lower bottom edge 020232, so that the range between the bottom sealing area 020512 and the lower bottom edge 02023 is reduced, and the storable space of the bag body 0205 above the bottom sealing area 020512 of the paper bag is increased.

Of course, it will be appreciated by those skilled in the art that the purpose of this embodiment, bottom seal region 020512, is to heat seal and seal all the inner front and back walls of the paper bag extending from left border 02021 to right border 02022 in bottom seal region 020512 to achieve the general paper bag bottom closure function, so that the upper and lower spaces in the paper bag are completely separated by bottom seal region 020512. The bottom seal 020512 is not limited to the parallelogram shape of the border of the area where the bottom seal 020512 is heat sealed and adhered as shown in fig. 2, nor to the parallel arrangement of the upper and lower borders of the area of the bottom seal 020512 and the upper mouth edge 020231 of the paper bag as shown in fig. 2.

It will also be appreciated by those skilled in the art that the lower edge 020232 is not limited to being spaced from the bottom seal region 020512 as shown in fig. 2, and that some or all of the lower edge 020232 may coincide with the lower boundary of the region of the bottom seal region 020512.

In the first embodiment, the folding during the forming process of the paper bag is set based on the condition that the distance between the left end 02041 and the left boundary 02021 is larger than 5mm, and the distance between the right end 02042 and the right boundary 02022 is larger than 5 mm. When the spacing between left end 02041 and left border 02021 is equal to 5mm, or the spacing between right end 02042 and right border 02022 is equal to 5mm, reference may be made to the third embodiment shown in fig. 6,7 and 8. Another situation that those skilled in the art should know is that when the distance between the left end 02041 and the left border 02021 is less than 5mm, or the distance between the right end 02042 and the right border 02022 is less than 5mm, for example, the distance between the right end 02042 and the right border 02022 is equal to 3mm, the left end 02041 will be located outside the right border 02022 after the PLA coated paper is folded and formed in the manner shown in fig. 3, and this situation still can form the body sealing region 020112 in the 3mm overlapping region formed by folding and forming the PLA coated paper by heat-sealing and sealing along the height direction of the paper bag, and the body surface of the bag 0205 is formed into a sealed closed shape by heat-sealing of the body sealing region 020112, and a storable space is formed in the bag 0205.

Furthermore, it will be appreciated by those skilled in the art that the angle between the left border 02021 and the upper edge 020231 is designed to make the upper edge 020231 slant and non-parallel to the width of the paper bag, so that the paper bag forms a slant bevel for convenient use when stretched along the upper edge 020231. as seen in the front view of fig. 2, the angle between the left border 02021 and the upper edge 020231 is not limited to 116 degrees in the first embodiment, and may be any obtuse angle between 95 degrees and 145 degrees, or any acute angle between 35 degrees and 85 degrees.

Example two

Fig. 4 is a partial schematic view of the PLA laminated paper overlapping of the folded edge before the heat sealing and adhering of the sealing region 020113 in the PLA laminated paper bag of the second embodiment of the present application in the form of an oblique groove. Fig. 5 is an outline elevation of the oblique-groove PLA coated paper bag shown in fig. 4, in which the bag is in a flat, unfolded state after molding. The difference between the second embodiment and the first embodiment is that different folding methods are adopted. Specifically, before the body sealing region 020113 is heat-sealed and bonded, referring to fig. 4, after the PLA coated paper is folded along the left border 02021 and the right border 02022 toward the observer, a fold line 02043 parallel to the right border 02022 is arranged at a position close to the right end 02042, the distance between the fold line 02043 and the right end 02042 is 2.5mm, the PLA coated paper at the right end is folded outward along the fold line 02043 again, so that the PLA coated layer between the fold line 02043 and the right end 02042 faces the observer, and when the PLA coated paper is pressed in this state, the PLA coated layer between the fold line 02043 and the right end 02042 and the PLA coated layer near the left end 02041 are relatively attached to each other to form a PLA coated paper overlapping region with a width of 2.5mm, and finally, a heat-sealed body surface sealing region 020113 is adopted in the PLA coated paper overlapping region with the width of the body sealing region 020113 to seal the body surface of the body sealing region to seal a closed bag body, and a storable space is formed in the pouch body 0206.

Of course, those skilled in the art should understand that the body sealing area 020113 of the paper bag in this embodiment is formed by adding a crease line 02043 on the basis of the first embodiment, and the body sealing area of the paper bag in this application can also be formed by adding more than one crease line.

EXAMPLE III

Fig. 6 is a partial schematic view of a folded edge of PLA laminated paper before heat-sealing and adhering the sealed area 020114 of a PLA laminated paper bag in the form of a color-coded bevel groove according to the third embodiment of the present application. Fig. 7 is a plan view of the PLA coated paper bag shown in fig. 6, in the form of a diagonal groove with color marks, in a flat, unopened condition. Fig. 8 is a schematic drawing of the outline of the PLA coated paper bag shown in fig. 6 in the form of a color-coded beveled edge as the bag is stretched along the upper lip 020231. The third embodiment is different from the first embodiment in that a different folding mode is adopted. Before the body seal area 020114 is formed by heat-sealing and bonding, referring to fig. 6, the PLA coated paper is folded along the left and right borders 02021 and 02022 toward the viewer, so that the right end 02042 of the PLA coated paper is aligned with the left border 02021, then the PLA coated paper between the left border 02021 and the left end 02041 is folded inwards along the left border 02021 and pressed near the right end 02042 to form a PLA coated paper overlapping area, then the PLA coated paper overlapping area is formed by heat-sealing and bonding in the PLA coated paper overlapping area to form a body seal area 020114, and the body seal area 020114 is used for heat-sealing and bonding to form a sealed closed body surface of the bag body 0207, so that a storable space is formed in the bag body 0207. In addition, in the third embodiment, a position identification mark is also provided on the paper bag. In particular, with reference to fig. 7, in the present embodiment, the position identification mark is a color mark 02081, which is provided on the outer surface of the pouch 0207, i.e. on the non-PLA lamination level. Color patches 02081 can be identified by color patch sensors mounted on the automated paper bag forming apparatus, which can help determine the forming positions of bottom sealing region 020512 and/or bottom edge 020232 during the process of forming bottom sealing region 020512 and/or bottom edge 020232 by color patches 02081. In this embodiment, the width of the PLA laminated paper bag is 70mm, the distance between the left border 02021 and the left end 02041 is 5mm, the size of the color scale 02081 is 10mm multiplied by 3mm, and the color of the color scale is black.

The third embodiment has different beneficial effects from the first embodiment: that is, color marks 02081 are provided on the outer surface of the bag body 0207, and the color marks 02081 can be identified by color mark sensors mounted on the automatic paper bag processing and forming equipment, so that the processing and forming positions of the bottom sealing area 020512 and/or the lower bottom edge 020232 and the like can be determined in an auxiliary manner when the bottom sealing area 020512 and/or the lower bottom edge 020232 and the like are processed and formed through the color marks 02081 in the automatic processing process.

Of course, those skilled in the art will appreciate that the folding sequence of the paper bags can be slightly different from the third embodiment, and the PLA coated paper between the left border 02021 and the left end 02041 can be folded along the left border 02021 toward the observer, then the right PLA coated paper can be folded along the right border 02022 toward the observer until the right end 02042 is aligned with the left border 02021, the PLA coated paper near the right end 02042 is pressed on the PLA coated paper between the folded left border 02021 and the folded left end 02041 to form a PLA coated paper material overlapping region, and then the PLA coated paper overlapping region is heat-sealed to form a body sealing region 020114, and the heat-sealed bonding through the body sealing region 020114 makes the body surface of the bag body 0207 form a sealed closed state, and a storable space is formed in the bag body 0207.

Example four

Fig. 9 is an outline elevation view of a PLA coated paper bag in the form of an oblique groove with color marks according to the fourth embodiment of the present application, in which the paper bag has an S-shaped curve at its upper and lower edges in a flat and unfolded state. The difference between the fourth embodiment and the first embodiment is that the upper mouth edge 020231 and the lower bottom edge 020232 in the fourth embodiment are S-shaped curves which are obliquely arranged, and the upper mouth edge 020231 and the lower bottom edge 020232 are parallel to each other. In the present embodiment, the upper opening edge 020231 and the lower bottom edge 020232 are both S-shaped curves formed by connecting two arcs with a radius of 95.72 mm. The left border 02021, the right border 02022 and the first embodiment are all formed by folded hemlines. The two intersection points formed by the intersection of the upper opening edge 020231 with the left border 02021 and the right border 02022 assume that the included angle between the virtual construction straight line obtained by connecting the two intersection points and the left border 02021 is 116 degrees. In addition, the fourth embodiment also provides a position identification mark on the paper bag, specifically, referring to fig. 9, in the present embodiment, the position identification mark is a color code 02081, which is provided on the outer surface of the bag body 0205, i.e. on the non-PLA lamination layer. Color scale 02081 can be discerned by the color scale sensor of installation on the automatic machine-shaping equipment of container bag, and in the automated processing of being convenient for, can assist the machine-shaping position of confirming bottom seal district 020512 and/or lower base 020232 etc. through color scale 02081 when bottom seal district 020512 and/or lower base 020232 etc. machine-shaping, color scale 02081 size is 10mm 3mm, and the color scale colour is black.

The fourth embodiment has different advantages from the first embodiment: as shown in fig. 9, the upper mouth edge 020231 and the lower bottom edge 020232 are inclined and parallel to each other in an S-shaped curve, so that the paper bag has a more beautiful appearance. In addition, a color mark 02081 is arranged on the outer surface of the bag body 0205, the color mark 02081 can be identified by a color mark sensor arranged on the automatic paper bag processing and forming equipment, and the processing and forming positions of the bottom sealing area 020512 and/or the lower bottom edge 020232 and the like can be determined in an auxiliary mode when the bottom sealing area 020512 and/or the lower bottom edge 020232 and the like are processed and formed through the color mark 02081 in the automatic processing process.

Furthermore, it will be appreciated by those skilled in the art that when the bag is in a flat, unexpanded condition, the bag is viewed in plan as viewed from the front, i.e. from the front, external view of the bag, with the upper lip 020231 and the lower base 020232 being in the form of lines disposed in a particular diagonal direction, primarily for aesthetic reasons, and not limited to the S-shaped curve shown in the front, external view of fig. 9.

Further, it will be understood by those skilled in the art that when the paper bag is in a flat, non-spread state, the angle between the virtual structural straight line and the left border 02021 is not limited to 116 degrees, if two intersecting points formed by the intersection of the upper mouth side 020231 with the left border 02021 and the right border 02022 are assumed to be connected, as shown in fig. 9, when the paper bag is viewed from the plane direction defined by the width and the height of the paper bag, i.e., when the paper bag is viewed from the external front view of the paper bag, and as shown in fig. 9, the S-shaped curves are inclined from the upper mouth side 020231 to the lower base side 020232 and are parallel to each other. The angle between the virtual construction straight line formed by the intersection of the upper opening side 020231 with the left and right borders 02021, 02022 and the left border 02021 can be set to any angle between 95 degrees and 145 degrees, or can be set to any angle between 35 degrees and 85 degrees.

EXAMPLE five

Fig. 10 is a schematic diagram of the shape of a PP laminated paper bag in the form of a slope mouth, which is opened along the upper edge 030231, showing the overall structure of the PP laminated paper bag, according to the fifth embodiment of the present application. The width of the paper bag is 70mm, and the total height is 150 mm. The paper bag adopts single face PP that has the heat-seal characteristic to drench the membrane paper, drenches membrane paper thickness and is 0.1mm, the internal face of paper bag is PP drenches the membrane aspect. The paper bag comprises a left boundary 03021, a right boundary 03022, a body sealing area 030112, an upper mouth edge 030231, a lower bottom edge 030232, a bottom sealing area 030512 and a bag body 0305.

As shown in fig. 10, the upper edge 030231 is a slope opening in the shape of an open closed loop when it is opened, the length of the bottom sealing region 030512 in this embodiment is extended from the left border 03021 to the right border 03022, all the front and rear inner walls of the paper bag extending from the left border 03021 to the right border 03022 within the height of the bottom sealing region 030512 are heat-sealed and sealed to realize the bottom closing function of the general paper bag, the bottom sealing region 030512 completely separates the upper and lower spaces in the paper bag, and the part of the paper bag above the bottom sealing region 030512 is the bag body 0305. Food or beverage can enter the bag body 0305 through the opened upper opening edge 030231, and the food or beverage entering the bag body 0305 cannot directly leak from the lower bottom edge 030232 due to the heat-sealing, adhesion, sealing and blocking of the bottom sealing area 030512. The bottom seal 030512 is disposed proximate the lower lip 030232. The bottom seal region 030512 is 5mm in height and extends in length from the left border 03021 to the right border 03022.

As shown in fig. 10, the body seal region 030112 is heat-sealed and bonded, and is close to the left boundary 03021, and the body surface of the bag body 0305 is sealed and closed by the heat-sealing bonding of the body seal region 030112. When the paper bag is spread along the upper lip 030231, the bag body 0305 is also spread along with the upper lip 030231 and shows the storable space in the bag body 0305. When food or beverage is placed into paper bag 0305 from upper mouth edge 030231, the surface of bag 0305 is sealed to prevent food or beverage from leaking out of the surface of bag 0305, and the specific formation of body seal 030112 is described in the description of fig. 12.

Fig. 11 is a PP laminated paper bag in the form of a ramp-top shown in fig. 10, which is in a flat, unbraced, front view. The left-right direction between the left boundary 03021 and the right boundary 03022 as shown in fig. 11 is the width direction of the paper bag. When the paper bag is in a flat state and is not spread, the front inner wall surface and the rear inner wall surface of the paper bag body 0305 are folded and attached. As seen in the front view of fig. 11, the upper lip 030231 is inclined straight line when not in a flat state, and forms a downward inclined angle with the right boundary 03022 formed by the folded edge line, in this embodiment, the included angle between the right boundary 03022 and the upper lip 030231 is 64 degrees, and the included angle between the upper lip 030231 and the paper bag in the width direction is 26 degrees which is not parallel, and the lower bottom edge 030232 is also inclined straight line when in a flat state as shown in fig. 11 and is parallel to the upper lip 030231. As shown in fig. 11, lower bottom edge 030232 is 3mm from bottom seal 030512 in the height direction of the paper bag. Specifically, in the process of heat-sealing and bonding the bottom sealing region 030512, all the front and back inner wall surfaces of the paper bag extending from the left boundary 03021 to the right boundary 03022 within the height of the bottom sealing region 030512 are heat-sealed, bonded and sealed to realize the bottom closing function of the general paper bag, as shown in fig. 11, the boundary line of the region of the bottom sealing region 030512 after heat-sealing and bonding is parallelogram, and the upper and lower boundary lines of the region of the bottom sealing region 030512 are parallel to the upper opening edge 030231 and the lower bottom edge 030232.

Fig. 12 is a partial schematic view of a folded edge of the PP laminated paper in the form of a slope mouth shown in fig. 10, before heat-sealing and bonding for illustrating a specific forming process of the body seal region 030112. As shown in fig. 12, the PP laminated paper having an unfolded width of 140mm has a left end 03041 and a right end 03042. The PP laminating paper is folded along the right border 03022, so that the left end 03041 and the right end 03042 are overlapped, in this embodiment, the left border 03021 is formed after the left end 03041 and the right end 03042 are overlapped, then the body seal region 030112 is formed by heat-sealing and bonding in a section of 5mm width region where the PP laminating paper material near the left border 03021 is overlapped after the left end 03041 and the right end 03042 are overlapped, the body surface of the bag body 0305 is in a sealed and closed shape through the heat-sealing and bonding of the body seal region 030112, and a storable space is formed in the bag body 0305.

The fifth embodiment has different beneficial effects from the first embodiment: in the fifth embodiment, the foldover is adopted only at the right boundary 03022, the left boundary 03021 is not formed by a foldover folding edge line, and the left boundary 03021 and the body sealing area 030112 can be formed by heat-sealing and bonding in the same process, so that the process is simpler than that of the first embodiment.

Of course, as will be appreciated by those skilled in the art, in this fifth embodiment, body seal region 030112 and bottom seal region 030512 have an intersection in the lower left corner of the paper bag as seen in FIG. 11. If the body seal region 030112 is formed with a heat seal cohesive seal within the intersection, the actual length of the bottom seal region 030512 as formed to allow the heat seal cohesive seal of the bottom seal region 030512 does not necessarily have to be at the left boundary 03021, but the actual length may begin at the point where the heat seal cohesive seal is performed in the intersection in the body seal region 030112.

Meanwhile, as will be understood by those skilled in the art, when the PP laminated paper is folded along the right boundary 03022 in fig. 12, it is acceptable that the left end 03041 and the right end 03042 are misaligned, for example, the left end 03041 and the right end 03042 are misaligned by 1mm after being folded, a body sealing region 030112 can be formed by heat sealing and bonding within a section of 5mm where the PP laminated paper materials formed after being folded close to the left end 03041 and the right end 03042 overlap, the body surface of the bag body 0305 is in a sealed and closed shape by heat sealing and bonding of the body sealing region 030112, and a storable space is formed in the bag body 0305.

Example six

Fig. 13 is a front view of a PP laminated paper bag in the form of an oblique bevel, which is in a flat, unfolded state, according to example six of the present application. The difference between the sixth embodiment and the fifth embodiment is that the sixth embodiment has two seal regions. Specifically, referring to fig. 13, two pieces of PP laminated paper having the same width are laminated with their PP laminated layer surfaces facing each other, and the two pieces of PP laminated paper are overlapped and aligned on both the left and right sides to form a left boundary 04021 and a right boundary 04022. Then two individual sealing areas 040112 are formed by heat sealing and bonding in a 5mm overlapping area respectively adjacent to the left boundary 04021 and the right boundary 04022, the surface of the bag body 0306 is in a sealed closed state by the heat sealing and bonding of the left and right side sealing areas 040112, and a storable space is formed in the bag body 0306. In this embodiment, the width of the PLA laminated paper bag is 70mm, and the width of the body sealing region 040112 is 5 mm.

Although the present application has been described with reference to the particular embodiments shown in the drawings, it should be understood that the paper bags of the present application can be modified in many ways without departing from the spirit and scope of the teachings of the present application and are not limited to the embodiments described herein with reference to the drawings and the examples illustrated. For example, those skilled in the art should also understand that the thickness of the paper-based composite packaging material used in the paper bag of the present application is not limited to the thickness of the paper-based composite packaging material described in the examples, and for example, single-sided PE laminated paper is used instead of the laminated paper material in the above examples; using a single face of Mackemen

Coat 95 coating this single-coated paper with heat-seal bonding characteristics replaces the laminated paper material in the above example; the paper-based composite packaging material with multiple composite layers with heat-seal bonding characteristics or the paper-based composite packaging material with composite layers on both sides of the paper-based composite packaging material is adopted to replace the single-sided laminating paper material and the like in the example. For example, a paper-based composite packaging material which has heat-seal bonding characteristics and is formed by compounding paper base and one or more other materials once or more times by using an adhesive, and the like is used. For example, in the sixth embodiment, two body sealing regions are provided near the left and right boundaries of the paper bag, but those skilled in the art should also know that the paper bag of the present application may include more than two body sealing regions, and two or more body sealing regions may be provided at other positions of the paper bag, and are not limited to being near the left and right boundaries of the paper bag. For example, the left and right boundary lines of the first embodiment are formed by folding lines formed by folding once, and it should be understood by those skilled in the art that the paper bag of the present application is used for packagingThe left and right boundaries can also be respectively in the form of more than one folding edge. For example, when the left and right borders of the paper bag of the present application are not directly formed by the folded hemline, such as the left border of the fifth embodiment and the left and right borders of the sixth embodiment, the left and right borders in this case are not limited to the straight borders of the present application, and may be in the form of an arc or the like. Also for example the left and right borders of the paper bag of the present application may be arranged non-parallel to each other, etc. For example, the processing and forming of the upper opening edge and the lower bottom edge described in the first to sixth embodiments all adopt a direct cutting mode, and in practice, the processing and forming of the upper opening edge and the lower bottom edge of the paper bag of the present application may also adopt processing and forming of the easy-to-tear line at the positions of the upper opening edge and the lower bottom edge, and then tearing along the easy-to-tear line formed by the upper opening edge and the lower bottom edge to generate the upper opening edge and the lower bottom edge, and so on. Those of ordinary skill in the art will also realize that there are different ways of varying the details of the structures in the embodiments disclosed in this application that fall within the spirit and scope of the application and the claims.

Claims (10)

1. The utility model provides a container bag of oblique groove form, the container bag adopts the paper base composite packaging material that has heat-seal bonding characteristic, and the container bag internal face is the composite layer face that has heat-seal bonding characteristic of paper base composite packaging material, include left boundary, right boundary, the bag body, body seal district, upper lip, lower base and underseal district behind the container bag shaping, its characterized in that, the upper lip and the lower base of container bag all adopt the slant design that is not parallel with container bag width direction, when the container bag is the flat state not struts the state, observe the container bag from the planar direction that normal container bag width and height constitute, follow promptly the container bag is observed to the appearance elevation of container bag, and the upper lip is the lines form that is not parallel with container bag width direction, and the lower base is the lines form that is not parallel with container bag width direction with the upper lip with, and the base is parallel with the upper lip.

2. Paper bag according to claim 1, characterized in that: the paper-based composite packaging material used for paper bag forming is a paper-based composite packaging material with a composite layer on one side of a paper base.

3. Paper bag according to claim 1, characterized in that: the paper-based composite packaging material for paper bag forming is a paper-based composite packaging material with multiple composite layers or a paper-based composite packaging material with composite layers on two sides of the paper base.

4. Paper bag according to claim 1, characterized in that: when the paper bag is in a flat unfolded state, the paper bag is observed from the plane direction formed by the width and the height of the paper bag in front view, namely the paper bag is observed from the appearance front view of the paper bag, and a virtual structure straight line formed by the intersection of the upper opening edge and the left and right boundaries and the two intersection points formed by the intersection of the upper opening edge and the left and right boundaries are supposed to be connected, and the left boundary or the right boundary forms an obtuse angle included angle from 95 degrees to 145 degrees or an acute angle included angle from 35 degrees to 85 degrees.

5. Paper bag according to claim 1, characterized in that: when the container bag was the platykurtic not struts the state, observed the container bag from the plane direction that paper bag width and height constitute were looked just, follow promptly the container bag is observed to the appearance elevation view of container bag, and the upper lip is the oblique straight line nonparallel with container bag width direction, and lower base is the oblique straight line nonparallel with container bag width direction with last lip is with last lip, and the lower base is parallel with upper lip.

6. Paper bag according to claim 1, characterized in that: when the container bag was the platykurtic not struts the state, observed the container bag from the plane direction that paper bag width and height constitute were looked squarely follow the container bag is observed to the appearance elevation view of container bag, and the last oral side is the curve nonparallel with container bag width direction, and the lower base is parallel with last oral side for the curve nonparallel with container bag width direction with last oral side being simultaneously.

7. Paper bag according to claim 1, characterized in that: and the paper bag is provided with a position identification mark.

8. Paper bag according to claim 1, characterized in that: when the paper bag is in a flat and unfolded state, the paper bag is observed from the plane direction formed by the width and the height of the paper bag in front view, namely the paper bag is observed from the appearance front view of the paper bag, and part or all of the lower bottom edge of the paper bag is overlapped with the area boundary line of the bottom sealing area.

9. Paper bag according to claim 1, characterized in that: when the container bag is the planiform and does not strut the state, from the plane direction observation container bag that orthoptic container bag width and height constitute, follow promptly the container bag is observed to the appearance elevation of container bag, goes up the oral area and is the oblique straight line that is not parallel with container bag width direction, goes up oral area and left boundary or right boundary and is from the obtuse angle contained angle between 95 degrees to 145 degrees or from the acute angle contained angle between 35 degrees to 85 degrees, and lower base and last oral area are the oblique straight line that is not parallel for with container bag width direction with being, and the lower base is parallel with last oral area.

10. Paper bag according to claim 1, characterized in that: when the container bag is the plain form not struts the state, the container bag is observed to the plane direction that the container bag width and height constitute from the orthographic view, follow promptly the container bag is observed to the appearance elevation view of container bag, goes up the oral margin and is the curve nonparallel with container bag width direction, goes up two nodical hypotheses that oral margin and left and right border crossing formation and link to each other gained virtual construction straight line and left border or right border and be from the obtuse angle contained angle between 95 degrees to 145 degrees or from the acute angle contained angle between 35 degrees to 85 degrees, and lower base and upper oral margin are the curve nonparallel with container bag width direction with being simultaneously, and lower base is parallel with upper oral margin.

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