JP3142245U - Nonwoven bag for packaging - Google Patents

Abstract

To develop a non-woven bag for packaging that does not deform even when a heavy article is stored, prevents damage during carrying, and does not leak to the outside.
The material of the non-woven bag for packaging is a non-woven sheet made of plastic fibers as an outer layer, and a composite sheet 4 in which an inner layer is laminated or laminated with a plastic film, and the bottom surface is always formed by the bottom structure formed by folding the bottom part. Since the article is held in a flat shape, the article is also held in a stable state, and the bag is not deformed while carrying a heavy article.
[Selection] Figure 3

Description

  The present invention relates to a composite sheet bag in which a plurality of layers including non-woven fabrics are overlapped / stacked and used for packaging and carrying various articles.

  Many conventional plastic bags for packaging have been known. However, most of the bags are rectangular, simple structures made of two plastic films or sheets. Or it is the shopping bag etc. of the composite sheet piled up with paper, and it is used in order to store goods in these bags and to carry as it is. Such a bag is easily deformed or deformed when a slightly heavy article is stored, and the article moves inside the bag while being carried and is not stable. For example, when a flowerpot is stored, there are many problems such as movement and tilting in the bag, which is not stable, damages the flowers, and water often leaks out of the bag.

In addition, non-woven sheets made of plastic fibers are also excellent in terms of air permeability, texture, texture, and appearance of printed matter, and are therefore considerably used as packaging bags. However, the nonwoven fabric sheet is liable to cause water leakage, and the nonwoven fabric alone has a drawback that it is easily deformed. However, it is noted that it has distinctive features not found in other packaging materials in terms of texture and appearance of printing.
Actual application 2008-799

  In order to solve these problems, a non-woven sheet made of an outer layer plastic fiber is laminated on an inner layer plastic film, or a composite sheet obtained by laminating and laminating is used to store a hydrated substance or when carrying it. In addition to preventing water leakage to the outside, we also examined a structure that does not cause deformation or deformation of the bag when heavy objects are stored.

  The component of the plastic material used for the nonwoven fabric sheet made of the plastic fiber of the present invention is not particularly limited. Various plastics such as polyethylene and polypropylene can be used. Moreover, the heat sealing method with the thin nonwoven fabric layer which has various compositions was examined. As a result, it has also been found that the use of a non-woven sheet made of core-sheath fibers having an inner layer made of polyethylene and an outer layer made of polypropylene is preferable because the surface can be smoothly fused without being disturbed by the heat sealing method. Furthermore, although the core-sheath fiber nonwoven fabric in which the inner layer and the outer layer have various ratios by a combination of these components was examined, it was found that any of them can be used for the packaging bag of the present invention.

  Furthermore, the bag making method including the lamination | stacking process of such a multiple types of nonwoven fabric sheet was also examined. As a result, a non-woven sheet made of core-sheath fibers having an inner layer made of polyethylene and an outer layer made of polypropylene is used as a bag material. A large number of non-woven fabrics are fused by an ultrasonic sealing method, and a thin two-layer non-woven fabric layer is mainly heat-sealed. The method of fusing by the method was also used. Furthermore, a wide heat-sealing method was adopted for the fusion of the four-layer sheet, which combines the corners on both sides of the front and back surfaces unique to the present invention and the bottom surface folded into the back side, in order to provide particularly high strength. This is to form a bottom structure that does not deform even when a heavy article is stored.

  Even when a heavy article was stored in a packaging bag, a structure in which the bag would not be deformed or deformed was examined. As a result, the bottom surface (7), (7 ') connected between the bottom sides of the front and back surfaces is folded back at the center line (20) of the bottom surface, and the cross section viewed from the side of the bag is W-shaped. A bag having a structure folded in between was devised. At the corners on both the left and right sides of the surface composite sheet (5) and the folded bottom surface (7) of this bag, four folded sheets are superimposed on each other and heat sealed diagonally. The wide diagonal lines (10) and (11) are formed, and similarly, the wide diagonal lines (10 ') and (11') heat-symmetrically symmetrical to the front surface are formed on the back surface (6). Further, the bottom surfaces (7) and (7 ') folded at the center line (20) are folded between the bottom sides of the composite sheets (5) and (6) on both sides.

  As a result, when the article is stored in the bag, the bottom surfaces (7), (20), (7 ′) that are folded between the bottom sides of the front and back surfaces swell to form a substantially rectangular bottom surface. . At the same time, the left and right portions of the bottom surface are folded into the bag, and overlap the back of the surface including the seal lines (10), (10 ') and (11), (11') at the bottom of the front and back sides. The three-dimensional structure which accommodates articles | goods with the substantially rectangular bottom face will be formed by becoming the side surface of the shape. It has been found that the three-dimensional structure composed of a plurality of layers does not cause deformation or deformation of the bag even when a heavy article is stored inside.

  In addition, by using non-woven sheets with different thickness, non-woven structure, texture, color, etc., it is possible to carry heavy items such as flower pots without losing shape, and to prevent damage to flowers and stems. The present invention also includes a composite bag of non-woven fabric and plastic film for packaging that can be applied to a wider range of purposes such as viewing and the like. In particular, a nonwoven fabric is suitable for packaging high-quality articles because it has a good texture and gives an elegant appearance. Based on these results, the present invention has been reached.

  That is, the non-woven packaging bag (1) is composed of a composite sheet (4) in which two layers of an outer layer made of plastic fibers (2) and an inner layer made of plastic film (3) are overlapped / stacked. Yes. The bottom surfaces (7) and (7 ') are formed between the bottom sides of the front and back composite sheets (5) and (6). A frilled nonwoven sheet / or composite sheet (8), (9) is extended.

  At the corners on the left and right sides of the surface composite sheet (5) and the bottom surface (7) that is folded and in contact, four layers including the bottom surface (7) that is folded back are overlapped and heat-sealed diagonally The wide oblique lines (10) and (11) are formed, and similarly, the wide oblique lines (10 ') and (11') heat-symmetrically symmetrical to the front surface are also formed on the back surface (6). Furthermore, two ultrasonic seal lines (12), (13), (12 '), (13') are formed on the upper part of the composite sheet on both the front and back sides of the bag (1). Openings (14) and (15) penetrating the front and back four-layer sheets are provided at the left and right ends between the two seal lines.

  Through the left and right openings, the strings (16) and (17) are passed through the inside of the composite sheet between the ultrasonic seal wires (12) and (13) of the surface composite sheet (5). Make a round through the inside of the composite sheet between the ultrasonic seal lines (12 '), (13') of the composite sheet (6), and end the two cords (16), (16 '), (17) and (17 ') are drawn out. Here, as a composite sheet on both the front and back surfaces, when a composite sheet having an inner layer and an outer layer sheet bonded thereto is used, in order to pass a string through the composite sheet, ultrasonic seal wires (12) and (13) It is necessary to use a composite sheet that is not bonded only between (12 ') and (13').

  When the article is stored inside the bag, the center portion of the bottom surface (7), (7 ') that is folded between the bottom sides of the front and back surfaces swells to form a substantially rectangular bottom surface, and the left and right portions are Folded inward to form a three-dimensional structure that forms the sides of the six layers that are lined up on the back of the heat seal wires (10), (10 ') and (11), (11') on both sides of the front and back Is done. Even when a heavy article is stored by the structure of the bottom portion, the bag is not deformed and can always be held in a stable state. This is the most important part of the present invention.

  Pulling the ends (16), (16 '), (17), (17') of the two cords pulled out to the left and right of the bag (1) outwards, the upper end of the bag is drawn into a drawstring A ruffled collar is formed on the top of the bag. Even if moisture is contained in an article housed in the bag, the inner layer of the bag contains a plastic film layer, so that water does not leak to the outside of the non-woven packaging bag.

  Or, in the non-woven bag for packaging of the above aspect, the non-woven sheet / or composite sheet (8), (9) in which the periphery is a frill, or an extended non-woven sheet (8), A mode in which the collars (18), (19), (18 ') and (19') are attached to the inside of (9) is also included in the present invention. This is to prevent damage to the flower and neck during transportation because the upper flower part comes out on the frill when storing an article having a neck part, for example, a flower pot. Or, even when stored in a bag, the flower is exposed on the frill, so you can enjoy it as it is. Even if water leaks from the flowerpot during transportation, the composite sheet contains a plastic film layer, so there is no risk of leakage outside the packaging bag. In addition, the bag of this aspect can be widely used for storing and carrying articles having a neck portion in addition to flower pots.

  Furthermore, one side between two ultrasonic seal lines (12), (12 '), (13), (13') formed on the upper and lower composite sheets of the bag (1) and parallel to the upper end A mode in which an opening is provided at one central location is also included in the present invention. One string is inserted through the opening, and the loop is returned to the opening between the two seal lines and through the inside of the composite sheet on both sides of the front and back, and the ends of the string and both ends of the end are outside the opening. It becomes an exposed structure. Pulling both ends to the left and right will squeeze the top of the bag into a drawstring. When an article having a shape of the neck, such as a flower pot, is stored, the flower is exposed from the edge of the frill-shaped bag, and the flower and the neck are held so as not to be damaged. Moreover, even if water leaks from the flowerpot during transportation, the composite sheet contains a plastic layer, so there is no risk of leakage outside the bag.

  In addition, a nonwoven fabric bag for packaging in which at least one of the material, composition, texture, color, shape, etc. of the frills (8) and (9) of the nonwoven fabric is different from the nonwoven fabric on the surface of the main body is also included in the present invention. In this embodiment, the frilled sheet is different from the non-woven fabric on the surface of the main body. Therefore, it is necessary to fuse a new sheet that becomes a frill to the non-woven fabric on the main surface. For this purpose, two ultrasonic seal lines (12) and (13) parallel to the upper end of each of the composite sheets (5) and (6) on both the front and back sides of the bag (1) and the seal lines on the back surface are provided. When (12) ′ and (13 ′) are formed, new frills can be stacked and fused on the front side or the back side. Using a non-woven fabric that is different from the non-woven fabric on the surface of the main body in addition to the design surface as well as the nature of the article, for example, in the case of a flower pot, use a non-woven fabric suitable for viewing and protecting the flower depending on the type of flower. It is also necessary to do.

  In addition to the present invention, the outer layer of the composite sheet (4) on the surface of the main body is a film and the inner layer is a non-woven fabric, and the outer layer and the inner layer of the composite sheet (4) on the main body surface are overlapped and fused and laminated. The present invention also includes a non-woven bag for wrapping of the above-described mode, or a mode in which only the collars (19) and (19 ′) are provided without the frills (10) and (11) of the non-woven fabric.

  A preferred embodiment of the non-woven bag for packaging of the present invention includes a non-woven sheet made of core-sheath fibers having an inner layer made of polyethylene and an outer layer made of polypropylene, and a composite sheet obtained by superimposing a polypropylene film. Due to the nature of this material and the special folding structure formed at the bottom of the bag, it has the function of maintaining a stable state of a heavy article being transported, such as a flower pot. For this reason, even when a heavy article is stored, it is not deformed and damage to the article being carried can be prevented. Furthermore, since the plastic material is contained in the bag material, there is no risk of leakage to the outside of the bag even if water leakage occurs when an article containing moisture is stored. Furthermore, it is suitable for carrying an article having a decorative effect by frills and a neck, for example, a flower pot.

  Hereinafter, embodiments of the present invention will be described more specifically with reference to examples.

  FIG. 1 shows a front view of the non-woven packaging bag (1) of the present invention, and FIG. 2 shows a development view. FIG. 2 shows the shape of the bag of FIG. 1 as viewed from the outside of the bag. Fig. 2 shows the front side bottom surface (7) and back side bottom surface (7 ') folded at the center folding line (20) so that the shape seen from the side is W-shaped, and folded between the front and back sides. 1 It becomes the shape shown. The outer surface layer of the bag is a non-woven fabric of core-sheath fibers in which the core is made of polyethylene and the sheath is made of polypropylene, and the inner surface layer is made of a polypropylene film.

  Next, the four layers of the left and right corners of the bottom of the front surface (5) of the bag (1) in FIG. 1 and the corresponding portion of the front side base (7) folded back to the back are superimposed. By heat sealing, wide oblique lines (10) and (11) are formed on the surface. Similarly, wide oblique lines (10 ') and (11') are formed on the back surface. In the hatched fused portion, the nonwoven fabric and the polypropylene film are further overlapped to form a structure including four layers including a two-layer nonwoven fabric and a two-layer polypropylene film. The structure of this portion of the sheet becomes more apparent when contrasted with FIGS.

  In the front view of the packaging bag shown in FIG. 1, two ultrasonic seal lines (12) and (13) parallel to the upper end are formed on the upper surface of the composite sheet (5) on the surface. Similarly, two ultrasonic seal lines (12 ') and (13') are formed on the composite sheet (6) on the back surface. Openings (14) and (15) penetrating the front and back four-layer sheets are provided at the left and right ends between the two seal lines. Through the left and right openings, the strings (16) and (17) are passed through the inside of the composite sheet between the ultrasonic seal wires (12) and (13) of the surface composite sheet (5), and the strings are further backed. Pull out through the inside of the composite sheet between the composite sheet ultrasonic seal wires (12 '), (13'), two ends of the string (16), (16 '), (17), (17 ') is drawn out.

  In addition, flares (8) and (9) having a petal-like tip are attached to the front and back of the upper part of the bag body. The flare portion may extend the nonwoven fabric of the surface layer as it is. However, since the non-woven bag for packaging of the present invention changes the composition, texture, color, pattern and the like of the non-woven fabric, it is more preferable to use a sheet having a texture and texture different from the bag body surface layer. For example, it is more preferable to use a sheet having a plain body, a flare portion having a different color, a polka dod pattern, etc., and having a different texture and texture.

  Since this extraction bag (1) has a symmetrical structure, the back sheet (6) is also symmetrical with the top sheet (5) as described above. FIG. 3 shows a perspective view of the bag when the article is stored in the nonwoven bag of the present invention. The outer shape of the bag body has a substantially rounded cuboid shape. There is a triangular pattern surrounded by a thick diagonal seal line at the bottom of the side of the rectangular parallelepiped. This part has four layers of sheets heat-sealed diagonally, and two layers on the bottom side on the front side. It has a triple (6 layers) structure in which the sheet (7) is folded and lined. The structure of the opposite part is the same. A substantially rectangular bottom is formed between the left and right portions.

  For this reason, even if a heavy article is stored, the bottom surface is always kept flat and hardly hangs down. Therefore, even a heavy article can always be carried in a stable state. Furthermore, since the bag surface is non-woven, it has a glossy appearance with no gloss like a plastic film. For this reason, even if a heavy article is stored, the shape of the substantially rectangular parallelepiped of the nonwoven fabric bag is retained without breaking, and an elegant appearance of a luxury product can be imparted.

  When the article is stored from the top of the bag, the bottom is always held flat by the bottom and side bottom structures provided between the front and back sides of the bag, so that the article can be held in a stable state. It is. Pull the ends (16), (16 '), (17), and (17') of the two cords pulled out to the left and right of the bag (1) to the outside, so that the upper end of the bag is squeezed into a drawstring And the upper frill-like portion is held exposed from the edge of the bag. In addition, since the inside of the front and back surfaces of the bag (1) includes a plastic film layer, the bag (1) has a structure that does not leak out of the bag even if water leaks from the article.

  FIG. 4 shows a development view of another embodiment of the non-woven packaging bag of the present invention. In addition, a figure expand | deploys a bag and shows the shape seen from the inside of a bag. This embodiment is the same as the embodiment shown in FIG. 1 except that the nonwoven fabric sheets (8) and (9) each having a frilled periphery are provided on the upper part of the composite sheet on both sides of the bag. It is. However, in this embodiment, the non-woven composite sheets (5), (6), the upper ends of the frills (8), (9), and the collars (18), (19), (18 '), (19 ′) Is different.

  The collar is preferably a material having a certain degree of rigidity. This is to protect the flower and its stem during transportation when storing an article with a neck, for example, a flower pot. In addition, it can be used in an embodiment in which only the collar is attached without a frill at the top of the bag.

  A nonwoven fabric sheet (8), (9), which has a frilled periphery, is attached to the upper part of the composite sheet on each of the front and back sides of the packaging nonwoven bag. In this example, a non-woven fabric sheet with different texture, texture, and color, which is different from the nonwoven fabric sheet (2) on both sides of the bag, is used as the frill, and the bag is superposed on the inside or outside of the top of the bag (1). It is fused to the bag (1) by sonic seal wires (12) and (12 ').

  Here, the nonwoven fabric having different properties from the nonwoven fabric sheet (2) refers to those having different fiber materials, nonwoven fabric structure, thickness, density, texture, color, and shape, and thus various usage methods. It becomes possible.

  The packaging non-woven bag of the present invention has a structure in which the bottom of the bag is always kept flat even when heavy articles are stored due to the nature of the material and a special folding structure at the bottom of the bag, so that it can withstand heavy objects. Yes. For this reason, there is no shape loss and it has a function which can always hold an article in a stable state during transportation. Moreover, there is no possibility that the article is damaged during transportation. Furthermore, since the plastic material is included in the bag material, water leakage to the outside can be prevented even if there is water leakage inside the bag. These functions make them particularly suitable for packaging or carrying high-quality products or expensive plants.

The front view of the nonwoven fabric bag of this invention is shown. The expanded view of the nonwoven fabric bag of this invention is shown. The perspective view of a bag when articles | goods are accommodated in the nonwoven fabric bag of this invention is shown. The expanded view of the nonwoven fabric bag of the other one aspect | mode of this invention is shown.

Explanation of symbols

1 Nonwoven bag for packaging
2 Nonwoven sheet made of plastic fibers
3 Plastic film
4 Overlaid / or laminated composite sheet
5 Composite sheet on the bag surface
6 Composite sheet on the back of the bag
7, 7 ′ Bottom
8 Surface ruffle
9 Frills on the back
10, 10 'Heat sealed diagonal lines on the left and front surfaces
11, 11 'Heat-sheared diagonal lines on the right and front surfaces
12, 12 'Upper ultrasonic seal wire
13, 13 'Lower ultrasonic seal wire
14 Opening through the left and right four-sided sheet
15 Opening through right and left 4 layers sheet
16, 16 'The string passed through the inside between the upper and lower ultrasonic seal lines from the left side
17, 17 'The string passing through the inside between the upper and lower ultrasonic seal lines from the right side
18, 19 Surface color
18 ', 19' Color on the back
20 Bottom center fold line

Claims (8)

The non-woven packaging bag (1) consists of a composite sheet (4) in which the outer layer is a non-woven sheet (2) made of plastic fibers and the inner layer is a plastic film (3). Non-woven fabric in which folded bottom surfaces (7) and (7 ') are formed between the bottom sides of the sheets (5) and (6), and the periphery of each of the upper and lower composite sheets is frilled. Sheet / or composite sheet (8), (9) is provided as an extension,
Four layers including the bottom surface (7) folded on the back side are superposed on the left and right corners of the surface composite sheet (5) and the bottom surface (7) that is folded and in contact, and heated diagonally. Sealed diagonal lines (10) and (11) are formed, and similarly, the rear surface (6) is also heat-sealed diagonal lines (10 ') and (11'),
Two ultrasonic seal lines (12), (13), (12 ′) and (13 ′) are formed on the front and back of the upper part of the composite sheet on both sides of the bag (1). Openings (14) and (15) penetrating the front and back four-layer sheets are provided at the left and right ends between the seal lines of the book, and the strings (16) and (17) are respectively attached to the surface from the left and right openings. Pass the inside of the composite sheet between the ultrasonic seal lines (12) and (13) of the composite sheet (5), and further pass the string between the ultrasonic seal lines (12 ') and (13') of the back composite sheet. It is pulled out through the inside of the composite sheet, and the two ends of the string (16), (16 '), (17), (17') are pulled out from the left and right ends,
When the article is stored inside the bag, the center portion of the bottom surface (7), (7 ') that is folded between the bottom sides of the front and back surfaces swells to form a substantially rectangular bottom surface, and the left and right portions are A three-dimensional structure that is folded inside and overlaps the back of the heat-sealed diagonal lines (10), (10 ') and (11), (11') on both sides of the front and back sides, and becomes the side of the 6 layers By being formed, it becomes possible to always hold the article in a stable state, and the ends (16), (16 '), (17) of the two strings drawn out to the left and right of the bag (1), When (17 ′) is pulled outward, the upper end of the bag is squeezed into a purse-like shape, a frill-like collar is formed on the upper part of the bag, and even if moisture is contained in the article, it has a structure that does not leak to the outside. Nonwoven bag for packaging. The non-woven packaging bag (1) consists of a composite sheet (4) in which the outer layer is a non-woven sheet (2) made of plastic fibers and the inner layer is a plastic film (3). Non-woven fabric in which folded bottom surfaces (7) and (7 ') are formed between the bottom sides of the sheets (5) and (6), and the periphery of each of the upper and lower composite sheets is frilled. Sheet / or composite sheets (8), (9) are extended, and further the collars (18), (19), (18 ′), (19 ′) inside the non-woven sheets (8), (9), respectively. ) Is attached,
Four layers including the bottom surface (7) folded on the back side are superposed on the left and right corners of the surface composite sheet (5) and the bottom surface (7) that is folded and in contact, and heated diagonally. Sealed diagonal lines (10) and (11) are formed, and similarly, the rear surface (6) is also heat-sealed diagonal lines (10 ') and (11'),
Two ultrasonic seal lines (12), (13), (12 ′) and (13 ′) are formed on the front and back of the upper part of the composite sheet on both sides of the bag (1). Openings (14) and (15) penetrating the front and back four-layer sheets are provided at the left and right ends between the seal lines of the book, and the strings (16) and (17) are respectively attached to the surface from the left and right openings. Pass the inside of the composite sheet between the ultrasonic seal lines (12) and (13) of the composite sheet (5), and further pass the string between the ultrasonic seal lines (12 ') and (13') of the back composite sheet. It is pulled out through the inside of the composite sheet, and the two ends of the string (16), (16 '), (17), (17') are pulled out from the left and right ends,
When the article is stored inside the bag, the center portion of the bottom surface (7), (7 ') that is folded between the bottom sides of the front and back surfaces swells to form a substantially rectangular bottom surface, and the left and right portions are A three-dimensional structure that is folded inside and overlaps the back of the heat-sealed diagonal lines (10), (10 ') and (11), (11') on both sides of the front and back sides, and becomes the side of the 6 layers By being formed, it becomes possible to always hold the article in a stable state, and the ends (16), (16 '), (17) of the two strings drawn out to the left and right of the bag (1), When (17 ′) is pulled outward, the upper end of the bag is squeezed into a purse-like shape, a frill-like collar is formed on the upper part of the bag, and even if moisture is contained in the article, it has a structure that does not leak to the outside. Nonwoven bag for packaging.   A nonwoven fabric sheet (2) made of plastic fibers of the outer layer is provided on the upper part of both the front and back surfaces except for the area between the two ultrasonic seal wires (12), (13), (12 ′), (13 ′). 3) A nonwoven fabric bag for packaging according to claim 1 or 2, which is a composite sheet in which two sheets of an inner layer plastic film (3) are bonded.   Between the two ultrasonic seal lines (12), (13), (12 '), (13') formed on the upper and lower composite sheets of the non-woven bag for packaging (1) parallel to the upper end, An opening (21) is provided at one central location on one side, and a string (22) is inserted through the opening, and ultrasonic seal wires (12), (13), (12 '), (13') on both sides The inside of the composite sheet between them is returned to the opening (21), and both ends of the string (22) are exposed to the outside. The non-woven bag for packaging according to any one of claims 1 to 3, wherein the bag is held in a narrowed state.   The non-woven bag for packaging according to any one of claims 1 to 4, wherein the non-woven bag for packaging (1) is free of the frills (8) and (9) and is provided with collars (18) and (19).   The nonwoven fabric bag for packaging according to any one of claims 1 to 5, wherein the outer layer of the composite sheet of the nonwoven fabric bag for packaging (1) is made of a plastic film and the inner layer is a nonwoven fabric sheet of plastic fibers.   The non-woven packaging bag according to any one of claims 1 to 6, wherein the non-woven packaging bag (1) is used for packaging a flower pot.   The material, composition, texture, color, shape, etc. of the frills (8), (9) of the non-woven packaging bag (1) are different from the outer layer of the packaging bag (1). The nonwoven bag for packaging according to any one of the above.