CN112996735A - Packaging bag (WU JI KE LI) - Google Patents
Packaging bag (WU JI KE LI) Download PDFInfo
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- CN112996735A CN112996735A CN201980074465.2A CN201980074465A CN112996735A CN 112996735 A CN112996735 A CN 112996735A CN 201980074465 A CN201980074465 A CN 201980074465A CN 112996735 A CN112996735 A CN 112996735A
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- Prior art keywords
- cushion
- packaging bag
- end edge
- sheet
- bag
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
- B65D81/03—Wrappers or envelopes with shock-absorbing properties, e.g. bubble films
Abstract
A packaging bag is provided with: a first surface section (11) having a first end edge section (110) disposed on one side of the opening (9); a second surface section (12) having a second end edge section (120) disposed on the other side of the opening (9), the second surface section (12) facing the first surface section (11); and a cushion section (20) that is in a stretchable sheet shape and is suspended between the first end edge section (110) and the second end edge section (120), wherein the cushion section (20) is provided with a plurality of notches extending in a direction intersecting the suspension direction in a staggered manner, and wherein the ratio of the weight per unit area of the sheet material forming the cushion section (20) to the weight per unit area of the sheet material forming the first surface section (11) and the second surface section (12) is 55-80%.
Description
Technical Field
The present invention relates to a bag for packaging articles.
Background
As the packing material, an air cushion provided with a plurality of air chambers, a foamable molded cushion material, a sheet-like cushion material deformed in the thickness direction such as single-sided corrugated paper, or the like is used. An article packaged by such a cushioning material may be put in a package bag during transportation or storage.
Therefore, a packaging bag having a cushioning member has been developed. For example, a packaging bag in which end edges of a pair of sheets provided with a plurality of air chambers are sealed with each other has been proposed (see patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2003 and 182774
Disclosure of Invention
Problems to be solved by the invention
However, if the above-described cushioning material that deforms in the thickness direction is provided in the packaging bag, the packaging bag has a problem in that the volume of the packaging bag increases due to the thickness of the cushioning material before the article is put into the packaging bag, that is, when the packaging bag is not used.
The packaging bag of the present invention has been made in view of the above-described problems, and one of the objects is to suppress an increase in volume when not in use. It is another object of the present invention to realize, without being limited to the object, the operation and effect derived from each configuration shown in the following "embodiment mode" and the operation and effect which cannot be realized by the conventional technology.
Means for solving the problems
(1) The packaging bag disclosed herein includes: a first surface portion having a first end edge portion disposed on one side of the opening; and a second surface portion having a second end edge portion disposed on the other side of the opening, the second surface portion facing the first surface portion. The packaging bag is provided with a cushion portion which is in a stretchable sheet shape, is suspended between the first end edge portion and the second end edge portion, and is provided with a plurality of notches extending in a direction intersecting with the suspension direction in a staggered manner, wherein the ratio of the weight per unit area of the sheet material forming the cushion portion to the weight per unit area of the sheet material forming the first surface portion and the second surface portion is 55% to 80%.
(2) Preferably, the buffer portion is provided so as not to contact the bottom portion in a stretched state.
(3) Preferably, the buffer portion has a bonding end portion bonded to an inner surface of the first end edge portion or the second end edge portion.
(4) Preferably, the first surface portion, the second surface portion, and the cushioning portion are formed of the same material.
(5) Preferably, the cushion portion is suspended in a state of being folded in two between the first end edge portion and the second end edge portion.
Effects of the invention
According to the packaging bag of the present invention, the three-dimensional cushion units corresponding to the cut-out portions are formed by stretching the sheet-like cushion portions by inserting the articles into the packaging bag, and the packaging bag can be made to have cushioning properties by these cushion units. Further, since the cushion portion is in the form of a sheet, the packaging bag can be prevented from being bulky when not in use, as compared with a packaging bag using a cushion member having a cushion deformation amount such as an air cushion or a molded cushion member.
Further, in the packaging bag of the present invention, the ratio of the weight per unit area of the sheet material forming the cushioning portion to the weight per unit area of the sheet material forming the first surface portion and the second surface portion is 55% to 80%, whereby the packaging bag is excellent in impact absorption at the time of dropping or collision.
Drawings
Fig. 1 is a perspective view showing a packaging bag when not in use.
Fig. 2 is a longitudinal sectional view of fig. 1.
Fig. 3 is an enlarged plan view of a main portion of the cushion portion in an unstretched state.
FIG. 4 is a vertical cross-sectional view showing the packaging bag in use.
Fig. 5 is an enlarged perspective view of a main portion of the cushion section in a stretched state.
Fig. 6 is a sectional view showing a section a-a of fig. 5.
Fig. 7 is a development view for explaining a structure of the packaging bag.
Fig. 8 is a perspective view of the package bag shown in the expanded view of fig. 7 assembled.
Fig. 9 is a perspective view showing another embodiment of the packaging bag.
Detailed Description
A packaging bag according to an embodiment will be described with reference to the drawings. The embodiments described below are merely examples, and do not exclude the application of various modifications and techniques not explicitly described in the following embodiments. The respective configurations of the present embodiment can be implemented by being variously modified within a range not departing from the technical ideas thereof. In addition, the selection can be made as appropriate or appropriately combined as necessary.
The packaging bag is a bag for packaging an article. In the present embodiment, a packaging bag in which a cushion portion for protecting a packaged article is provided in a main bag is described.
The main bag and the buffer portion constituting the packaging bag are preferably formed of the same material such as paper or resin. The body pocket and the cushioning portion may be formed of different materials, respectively.
In the following embodiments, a packaging bag in a state where an opening is arranged upward will be described. The direction of action of gravity is referred to as downward, and the opposite direction to the downward direction is referred to as upward.
[ 1 ] Structure of packaging bag ]
First, the main bag 10 of the packaging bag will be described with reference to fig. 1 and 2.
The main bag 10 is provided in a form of envelope without a flare portion (japanese: マチ, し) having an opening 9 opened and closed by a lid 19 formed in the upper portion. Here, a square envelope is exemplified as the main body bag 10, but a long-strip envelope or a western-style envelope may be used as the main body bag.
The body bag 10 is provided with a first surface 11 and a second surface 12 facing each other.
These face portions 11, 12 are provided continuously with each other at a bottom portion 13 provided below the opening 9 in the main body bag 10 and at two side portions 14, 15 provided upright so as to connect the bottom portion 13 with the opening 9. Further, an upper end edge portion (first end edge portion) 110 of the first surface portion 11 is disposed on one side (upper right side in fig. 1) of the opening 9, and an upper end edge portion (second end edge portion) 120 of the second surface portion 12 is disposed on the other side (lower left side in fig. 1) of the opening 9.
A cover 19 is continuously provided on the first surface portion 11 so as to protrude upward.
Fig. 8 shows another example of the packaging bag of the present invention. Fig. 7 is an expanded view showing an assembling method (structure) of the packaging bag of fig. 8.
In assembling the packaging bag shown in fig. 8, a body sheet 10S for constituting the first surface 11 and the second surface 12 and a cushion sheet 20S assembled into the cushion portion 20 are prepared.
As shown in fig. 7, in the main body sheet 10S, two lateral folding lines R extending in the X directionX1、RX2(bending lines) arranged in the Y direction, and two longitudinal folding lines R extending in the Y directionY1、RY2(bending lines) are arranged in the X direction. Transverse fold line RX1、RX2Orientation Y2The directions are arranged in sequence. I.e. the second transverse fold line RX2Is arranged at a first transverse fold line RX1By Y2The position of the direction side. In addition, a longitudinal folding line RY1、RY2First longitudinal folding line R ofY1A second longitudinal fold line R arranged on the other sideY2By X1The position of the direction side.
Two transverse fold lines RX1、RX2First transverse fold line R inX1Is a bending line for sealing the main bag 10, and a second transverse folding line RX2Is a bending line for assembling the body sheet 10S into a bag shape.
The main body sheet 10S is at the second transverse folding line RX2And two longitudinal folding lines RY1、RY2Is bent.
First transverse fold line RX1And a second transverse fold line RX2And two longitudinal folding lines RY1、RY2A rectangular outline is formed which divides the first sheet 11S corresponding to the first face portion 11.
On the Y-direction side with respect to the first sheet 11SAlong a first transverse fold line RX1At Y1A cover sheet 19S corresponding to the cover 19 is continuously provided on the side of the direction with a second transverse folding line R interposed therebetweenX2At Y2The direction side is continuously provided with the second sheet 12S corresponding to the second face 12.
In addition, X is relative to the first sheet material 11S1Direction side and X2The direction sides are respectively separated by a longitudinal fold line RY1、RY2The pasting sheets 18S are continuously provided. The pasting sheet 18S is pasted to the main body sheet 10S at the second transverse folding line RX2And the surface of the second sheet 12S (corresponding to the outer surface of the second surface portion 12) opposed when bent.
Y in the first sheet 11S1A first main body attachment region 110S to which the cushion sheet 20S is attached is set at the end edge on the direction side. Likewise, Y in the second sheet 12S2A second main body attachment region 120S to which the cushion sheet 20S is attached is set at the end edge on the direction side. The body attachment regions 110S, 120S are regions corresponding to the inner surfaces 111, 121 of the upper edge portions 110, 120 of the face portions 11, 12. That is, the body attachment regions 110S and 120S are provided on the surface of the first sheet 11S and the second sheet 12S that is inside the body bag 10.
Buffer sheet
As shown in fig. 7, at Y of the cushion sheet 20S1Direction side and Y2 Buffer bonding regions 21S and 22S (inner edge regions) to be bonded to the body bonding regions 110S and 120S (outer edge regions) are set at the respective end portions on the direction sides. The buffer pasting regions 21S, 22S are regions corresponding to the pasting end portions 21, 22 of the buffer portion 20 described above. The buffer pasting regions 21S and 22S are not provided with the notch 23 a.
Further, a third transverse folding line R extending in the X direction (predetermined direction) is provided at the Y-direction center of the cushion sheet 20SX3. The third transverse fold line RX3Is a folding line corresponding to the folding line part 230.
A main body sheet 23S corresponding to the main body portion 23 is provided in a region of the cushion sheet 20S other than the cushion pasting regions 21S, 22S. The cut portions 23a are provided in a staggered manner in the main body sheet 23S. Each notch 23a extends along the X direction.
Next, the cushion portion 20 of the packaging bag will be described.
The cushioning portion 20 is also called a cushioning paper, a honeycomb paper, or the like, and is a sheet-like cushioning material having a plurality of notches 23a arranged in a staggered manner.
The cushion portion 20 is suspended between the upper edge portion 110 of the first surface portion 11 and the upper edge portion 120 of the second surface portion 12.
The ratio of the weight per unit area of the sheet material forming the cushioning portion 20 to the weight per unit area of the sheet material forming the first face portion 11 and/or the second face portion 12 is 55% to 80%, preferably 60% to 75%. By setting the ratio of the weight per unit area of the sheet material forming the cushion portion 20 to the weight per unit area of the sheet material forming the first surface portion 11 and/or the second surface portion 12 to 80% or less, the cushion portion 20 can be stretched and the impact can be relaxed when the impact is received. Further, by setting the ratio of the weight per unit area of the sheet material forming the cushion portion 20 to the weight per unit area of the sheet material forming the first face portion 11 and/or the second face portion 12 to 55% or more, the stretch of the cushion portion 20 at the time of an impact can be appropriately controlled, and the impact applied to the article 1 (the package) can be alleviated.
The sheet material forming the first face portion 11 and/or the second face portion 12 is more preferably 60g/m in basis weight2～300g/m2More preferably 70g/m2～250g/m2. By making the basis weight of the sheet material forming the first face portion 11 and/or the second face portion 12 60g/m2As described above, the first surface portion 11 and/or the second surface portion 12 can be prevented from being bent and deformed by applying a load to the joint portion between the first surface portion 11 and/or the second surface portion 12 and the cushion portion 20 due to an impact. By making the weight per unit area of the sheet material forming the first face portion 11 and/or the second face portion 12 300g/m2Hereinafter, the impact acceleration can be reduced by providing appropriate flexibility to the packaging bag, and the article 1 (the inner package) can be prevented from being damaged. In addition, in terms of packaging workability, the face portions 11 and 12 preferably have appropriate rigidity, and specifically, the sheet forming the first face portion 11 and/or the second face portion 12 is preferredThe weight per unit area of the material is 110g/m2The above.
The cushioning portion 20 is roughly divided into the following two portions: adhesive end portions 21 and 22 attached to upper end edge portions 110 and 120 of the face portions 11 and 12; and a main body 23 provided in a suspended state (suspended state) in the main bag 10 between the attaching ends 21 and 22.
Here, the first attaching end portion 21 is attached to the inner surface 111 of the upper end edge portion 110 of the first surface portion 11, and similarly, the second attaching end portion 22 is attached to the inner surface 121 of the upper end edge portion 120 of the second surface portion 12. On the other hand, the main body portion 23 is not adhered to any portion.
The buffer 20 is illustrated in a state of being folded in two at a fold line portion 230 at the center in a hanging direction in which the first attaching end portion 21 and the second attaching end portion 22 are connected along the buffer 20.
As shown in fig. 2, the body portion 23 of the cushioning portion 20 folded in two in this way is roughly divided into two portions, a first body portion 231 on the first attaching end portion 21 side and a second body portion 232 on the second attaching end portion 22 side, with a fold portion 230 interposed therebetween.
The main body 23 is stretched by the weight of the article 1 when the article 1 (see fig. 4) put into the packaging bag through the opening 9 is placed.
That is, the cushioning portion 20 is in an unstretched state (hereinafter referred to as "unstretched state") before the article 1 is contained in the packaging bag (when the packaging bag is not used), and the cushioning portion 20 is in a stretched state (hereinafter referred to as "stretched state") after the article 1 is contained in the packaging bag (when the packaging bag is used).
The main body 23 is provided with a structure capable of stretching the cushion section 20 in this manner.
Hereinafter, the main body 23 in the unstretched state will be described, and the main body 23 in the stretched state will be described later.
First, the main body 23 in an unstretched state will be described with reference to fig. 3.
The body 23 is cut to form a plurality of notches 23 a. These cutout portions 23a are provided in at least the main body portion 23 of the cushioning portion 20.
The notch 23a extends in a direction (hereinafter referred to as a "width direction") perpendicular to the suspension direction (here, the vertical direction).
The notches 23a are arranged intermittently in the width direction. That is, non-cut portions 23b are provided between the cut portions 23a adjacent to each other in the width direction.
If the size of the notch 23a is set to "L1", the size of the non-cutout portion 23b is set to" L2", then inequality 1" L is satisfied1＞L2”。
Here, the first pattern P is an orientation of a line in which the cut portions 23a and the non-cut portions 23b are alternately arranged in the width direction1. In addition, will be identical to the first pattern P1The second pattern P is formed by the orientation of the other rows in which the cut portions 23a ' and the non-cut portions 23b ' are alternately arranged in the width direction and the cut portions 23a and the non-cut portions 23b ' are arranged with a half pitch therebetween2. These first patterns P1And a second pattern P2Arranged alternately in the hanging direction.
In detail, the first pattern P1Center C in the width direction of the cutout portion 23aaAnd a second pattern P2Center C in the width direction of the non-cutout portion 23bb' arranged in a row along the hanging direction. Likewise, the first pattern P1Center C in the width direction of the non-cutout portion 23bbAnd a second pattern P2Center C in the width direction of the cutout portion 23aa' arranged in a row along the hanging direction.
The cushion section 20 having the main body section 23 provided with the notched sections 23a and 23a ' and the non-notched sections 23b and 23b ' is manufactured by cutting while rotating a sheet that is not cut, by a rotary die cutter provided with a blade section (cutter) having a shape corresponding to the notched sections 23a and 23a ' on the outer periphery. Alternatively, the cushioning portion 20 is manufactured by cutting an uncut sheet material while pressing it with a flat plate die cutter provided with blades having shapes corresponding to the cut portions 23a and 23 a'.
Relative to the first pattern P1The notch 23a is on one side (upper side in fig. 3) of the hanging directionThe sheet material passes through the second pattern P2The positions of the cut portion 23a 'and the non-cut portion 23 b' are roughly divided into the first piece 31, the second piece 32, and the third piece 33.
The first sheet 31 is a first pattern P1One of the cut portions 23a in the width direction (left in fig. 3) and the second pattern P2The other side in the width direction (rightward in fig. 3) of the notch portion 23 a' of (a). The second sheet portion 32 is formed by the first pattern P1The center in the width direction of the notch 23a and the second pattern P2Is located between the non-cutout portions 23 b'. The third sheet part 33 is formed by the first pattern P1The other side in the width direction of the cut-out portion 23a and the second pattern P2The notch portion 23 a' of (2) is a portion sandwiched in one of the width directions.
In addition, with respect to the first pattern P1The other sheet piece of the cut portion 23a in the hanging direction is roughly divided into a fourth sheet piece 34, a fifth sheet piece 35, and a sixth sheet piece 36, similarly to the sheet pieces 31, 32, and 33 described above.
The fourth sheet portion 34 is covered with the first pattern P1One of the width directions of the cut-out portions 23a and the second pattern P2The other side in the width direction of the notch portion 23 a' sandwiches. The fifth sheet portion 35 is covered with the first pattern P1The center in the width direction of the notch 23a and the second pattern P2Is sandwiched by the non-cutout portions 23 b'. The sixth sheet portion 36 is covered with the first pattern P1The other side in the width direction of the cut-out portion 23a and the second pattern P2The notch portion 23 a' of (2) is sandwiched in one of the width directions.
Next, the body 23 in the stretched state will be described with reference to fig. 4, 5, and 6.
As shown in fig. 4, the body portion 23 in the stretched state extends in the hanging direction compared to the body portion 23 in the unstretched state. In the body 23 at this time, the pieces 31 to 36 are erected from the hanging direction in the thickness direction of the face portions 11 and 12 (the thickness direction of the body 23 in the non-stretched state) (see fig. 5 and 6), and the erected pieces 31 to 36 form the three-dimensional cushion unit 40. In other words, the sheet portions 31 to 36 arranged around one of the notches 23a stand up to form one cushion unit 40.
Specifically, as shown in fig. 5, the first wall portion 41 corresponding to the first sheet portion 31, the second wall portion 42 corresponding to the second sheet portion 32, the third wall portion 43 corresponding to the third sheet portion 33, the fourth wall portion 44 corresponding to the fourth sheet portion 34, the fifth wall portion 45 corresponding to the fifth sheet portion 35, and the sixth wall portion 46 corresponding to the sixth sheet portion 36 are erected in the buffer unit 40 so as to constitute the side walls of the hexagonal tube.
In a geometrically most stretched state (hereinafter referred to as a "maximum stretched state") within a range in which the body portion 23 is not damaged, the first wall portion 41 and the fourth wall portion 44 are along the same plane, and the third wall portion 43 and the sixth wall portion 46 are opposed to the first wall portion 41 and the fourth wall portion 44 along the other same plane. Therefore, in the cushion unit 40 in the maximum stretched state, the wall portions 41 to 46 are provided upright so as to form the side walls of the quadrangular tube.
As shown in fig. 4, the cushion portion 20 in the stretched state is not in contact with the bottom portion 13 of the main bag 10.
Specifically, the fold portion 230 positioned at the lowermost position in the cushioning portion 20 in the most stretched state is provided so as not to contact the bottom portion 13 of the main bag 10. In other words, if the vertical dimension between the upper ends 21a, 22a of the bonded end portions 21, 22 of the cushion portion 20 and the bottom portion 13 of the main bag 10 is defined as "M1"M" represents the vertical dimension between the upper ends 21a, 22a and the fold line 230 in the cushioning portion 20 in the most stretched state2", then inequality 2" M is satisfied1＞M2”。
Furthermore, it is preferable to set "M" as large as possible while satisfying the inequality 22", thus approaching" M1”。
Conversely, as shown in fig. 2, the fold line portion 230 of the unstretched cushion portion 20 is previously set to the predetermined dimension "M" with respect to the bottom portion 13 of the main bag 10 so that the cushion portion 20 in the maximum stretched state does not contact the bottom portion 13 of the main bag 103"is disposed above. That is, the cushion portion 20 is formed to be short in consideration of the stretching margin.
Next, an example of setting the size of the buffer portion 20 for realizing the above-described non-contact structure will be described with reference to fig. 4.
If the pattern P in the buffer part 20 is to be formed1、P2The number of lines of (A) is "N", and the vertical size of the pasting end parts 21, 22 is "M4", then approximates the formula 3" M2-M4≒(L1-L2) X (N/4) "holds.
The left side of the approximate expression 3 indicates the vertical dimension of the first body 231 or the second body 232 in the maximum stretched state.
On the other hand, (L) in the right side of approximate expression 31-L2) The dimension in the hanging direction of each cushion unit 40 in the maximum stretched state, that is, the dimension in the hanging direction of the first wall portion 41 and the fourth wall portion 44 is shown.
In the main body 23, the number of the cushion units 40 arranged in the hanging direction is a pattern P1、P2Is equal to (N/2), and thus (N/4) in the right side of the approximate expression 3 represents the number of the buffer units 40 arranged in the suspension direction in the first or second main body portion 231 or 232.
Here, if the dimension in the hanging direction of the second wall portion 42 and the fifth wall portion 45 extending in the width direction is ignored, it can be said that the number (N/4) of the cushion units 40 arranged in the hanging direction in the first body portion 231 or the second body portion 232 is multiplied by the dimension (L) in the hanging direction of each cushion unit 40 in the maximum stretched state1-L2) The obtained value (approximate right side of expression 3) is approximate to the vertical dimension of the first body 231 or the second body 232 in the maximum stretched state.
Therefore, the width dimension L of the cutout portion 23a or the non-cutout portion 23b is appropriately set1、L2Pattern P1、P2Number of lines of (3) and vertical dimension M of the attaching end portions 21, 224The above-described non-contact structure can be designed by parameters corresponding to the items in approximate expression 3.
Further, the widthwise dimension of the cushioning portion 20 is set to be slightly smaller than the widthwise dimension of the face portions 11, 12.
[ 2 ] use steps of packaging bags ]
Next, a method of using the packaging bag will be described.
As shown in fig. 1 and 2, the lid 19 is first opened to open the opening 9, and the main bag 10 is unsealed.
Then, the article 1 is put into the packaging bag, and the article 1 is placed or inserted in the main body portion 23 of the cushioning portion 20. At this time, as shown in fig. 4, the main body 23 of the cushion section 20 extends in the hanging direction, and the cutout 23a rises in the thickness direction of the surface sections 11 and 12, whereby the cushion unit 40 is formed in the main body 23 as shown in fig. 5 and 6.
Then, a lid 19 is attached to the upper edge portion 120 of the second surface portion 12 of the main bag 10, and the packaging bag is sealed. At this time, the article 1 is surrounded by the buffer unit 40.
[ 3 ] action and Effect ]
Since the packaging bag of the present embodiment is configured as described above, the following operations and effects can be obtained.
(1) When the article 1 is placed in the packaging bag and placed on the main body portion 23 of the cushion portion 20, the sheet-like main body portion 23 is stretched in an unstretched state, and the three-dimensional cushion units 40 corresponding to the respective cutout portions 23a are formed in the stretched main body portion 23. By surrounding the article 1 with the cushion unit 40 formed inside the main bag 10, the protection of the article 1 can be ensured, and the packaging bag can be made to have a cushion property.
Further, since the main body 23 in an unstretched state is in a sheet shape, the packaging bag can be prevented from being bulky when not in use, as compared with a packaging bag using a cushion material provided with a cushioning deformation amount, such as an air cushion, a molded cushion material, or a single-faced corrugated cardboard.
In addition, in the conventional package bag, when the cushion member is provided separately from the main bag, the entire cushion member needs to be attached to the main bag in order to fix the cushion member to the main bag. In contrast, in the present package, since the cushion section 20 is suspended, it is only necessary to attach a part of the cushion section 20 to the main bag 10, and the amount of the adhesive or the bonding material used can be reduced.
Further, since the cushion portion 20 exerts a cushion function by being stretched inside the main bag 10, the stretch margin can be estimated and made short. Therefore, the amount or weight of the cushioning material can be reduced as compared with a packaging bag using a single-faced corrugated cardboard produced by applying a process (grooving process) for undulating a flat material sheet as the cushioning material.
(2) Since the cushion portion 20 provided in the stretched state is not in contact with the bottom portion 13, contact (bottoming) between the article 1 contained in the packaging bag and the bottom portion 13 of the main bag 10 can be suppressed, and the protection of the article 1 can be improved.
(3) The bonded end portions 21 and 22 of the cushion portion 20 are bonded to the inner surfaces 111 and 121 of the upper end edge portions 110 and 120 of the main bag 10. Therefore, the amount of material and weight of the cushion part 20 can be reduced compared to a packaging bag in which the cushion part is folded outward between the attached end part and the main body part and the attached end part is attached to the outer surface of the upper end edge part 110, 120.
Further, by attaching the attaching end portions 21 and 22 to the inner surfaces 111 and 121, interference between the lid 19 of the main bag 10 and the cushioning portion 20 can be prevented, and the opening 9 can be smoothly opened and closed.
(4) The main bag 10 and the cushion portion 20, which are formed of the first surface 11, the second surface 12, and the lid 19, are formed of the same material, so that the handling property of the used packaging bag can be improved. For example, when the packaging bag is recycled (recycled) or discarded, it is not necessary to distinguish the packaging bag by material, and the handling workability can be improved. If the main body bag 10 and the cushioning portion 20 are made of paper, the used packing bag can be directly disposed of as waste paper or combustible garbage.
(5) Since the cushion portion 20 is hung in a state of being folded in two, the thickness of the packaging bag when not in use can be suppressed as compared with a packaging bag hung in a state where the cushion portion is folded in three or more, for example.
Specifically, four sheets are stacked in the order of the first surface portion 11, the first body portion 231, the second body portion 232, and the second surface portion 12 at the portion where the body portion 23 is provided in the pouch when not in use. In contrast, in the buffer portion folded into three or more folds, three or more main body portions are folded, and five or more sheets are stacked. Therefore, by suppressing the thickness of the folded main body portion 23, the increase in volume of the packaging bag can be suppressed.
[ 4. other ]
Finally, another modification of the present embodiment will be described.
For example, the notched portions and the non-notched portions are not limited to the orientation extending in the width direction, and may extend at least in the direction intersecting the suspension direction. By such orientation, the cushion portion can be stretched in the suspension direction.
The main body bag is not limited to the envelope type without the opening portion provided with the lid 19, and various types of bags such as a square-bottom bag, a folding bag, and a self-standing bag may be used, and a bag with an opening portion (japanese: マチ and き) or a bag without a lid may be used.
In the case where a pouch without a cover is used as the main body pouch, the cushion portion may be folded outward between the attaching end portion and the main body portion, and the attaching end portion may be attached to the outer surface of the upper end edge portion 110, 120. In this case, the cushion portion is hung so as to be hooked on the surface portions 11 and 12, whereby the cushion portion can be reliably attached to the main bag, and the load resistance of the cushion portion can be improved.
In the modification shown in fig. 9, the first attaching end portion 2l of the buffer portion 20 has a portion overlapping the lid 19 of the main body bag 10. In this modification, the first attached end portion 2l is bent together with the cover 19 at the time of sealing to cover the second surface portion from the outside, so that the strength for hanging the interior can be increased.
Examples
The features of the present invention will be described in more detail below with reference to examples and comparative examples, but the scope of the present invention should not be construed as being limited to the specific examples shown below.
< preparation of packaging bag sample >
A sample of the package shown in fig. 8 was produced. The first surface portion (second surface portion) had a vertical dimension of 300mm and a width-direction dimension of 240 mm. The cushion portion was folded in half and was not stretched, and the vertical dimension was 120mm and the width-direction dimension was 240 mm. The cushion part is adhered to the upper edge part of the face part through a double-sided adhesive tape.
The packaging bag samples of examples and comparative examples were prepared using the materials described in table 1 as the material of the first surface portion and the second surface portion, and the material of the cushion portion.
< evaluation of sample >
An impact accelerometer (product name: G-men DR100, manufactured by SRIC) was inserted into each of the packaging bag samples of examples and comparative examples, and after sealing, the free fall test described in the impact test of JISZ0200 was performed to measure the maximum value of the impact acceleration.
The test results are shown in Table l.
[ TABLE ] A
| Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | Comparative example 2 | |
| Material (A) of the first and second face parts | Kraft paper 120g/m2 | Kraft paper 148g/m2 | Kraft paper 120g/m2 | Kraft paper 148g/m2 | Kraft paper 120g/m2 | Kraft paper 148g/m2 |
| Material for buffer part (B) | Paper with a volume of 70g/m2 | Kraft paper 90g/m2 | Kraft paper 90g/m2 | Kraft paper 118g/m2 | Kraft paper 50g/m2 | Kraft paper 128g/m2 |
| (weight per unit area of B)/(weight per unit area of A) | 58％ | 61％ | 75％ | 80％ | 42％ | 86％ |
| Maximum value of buffer acceleration | 81g/s2 | 78g/s2 | 79g/s2 | 80g/s2 | 91g/s2 | 92g/s2 |
As shown in the test results in Table 1, examples 1 to 4 have smaller impact acceleration and superior impact absorption rate than comparative examples 1 to 2.
Description of the symbols
To: an article; 9: an opening; 10: a main body bag; 11: a first face; 110: an upper end edge portion (first end edge portion); 111: an inner surface; 12: a second face; 120: an upper end edge portion (second end edge portion); 121: an inner surface; 13: a bottom; 14. 15: a side portion; 19: sealing the cover; 20: a buffer section; 21: a first affixing end portion; 21 a: an upper end; 22: a second affixing end portion; 22 a: an upper end; 23: a main body portion; 230: a fold line portion; 231: a first main body portion; 232: a second main body portion; 23a, 23 a': a cut-out portion; 23b, 23 b': a non-cut portion; 31. 32, 33, 34, 35, 36: a sheet portion; 40: a buffer unit; 41. 42, 43, 44, 45, 46: a wall portion; ca. Ca': the widthwise centers of the notches 23a, 23 a'; cb. Cb': the widthwise centers of the non-cutout portions 23b, 23 b'; l is1: the width-directional dimensions of the cutout portions 23a, 23 a'; l is2: the width dimension of the non-cutout portions 23b, 23 b'; m1: the up-down dimension between the upper ends 21a, 22a and the bottom 13 of the body bag 20; m2: the vertical dimension between the upper ends 21a, 22a and the fold line portion 230 in the maximum stretched state; m3: the vertical dimension of the fold line portion 230 in an unstretched state with respect to the bottom portion 13; m4: the vertical dimensions of the attachment ends 21, 22; n: pattern P1、P2The number of rows of (c); p1: a first pattern; p2: a second pattern.
Claims (5)
1. A packaging bag is provided with:
a first surface portion having a first end edge portion disposed on one side of the opening;
a second surface portion having a second end edge portion disposed on the other side of the opening, the second surface portion facing the first surface portion; and
a stretchable sheet-like cushion portion suspended between the first end edge portion and the second end edge portion, the cushion portion having a plurality of notches extending in a direction intersecting with a suspension direction, wherein the plurality of notches are arranged in a staggered manner,
the ratio of the weight per unit area of the sheet material forming the cushioning portion to the weight per unit area of the sheet material forming the first surface portion and the second surface portion is 55% to 80%.
2. The packaging bag according to claim 1,
the cushioning portion is provided so as not to contact the bottom portion in a stretched state.
3. The packaging bag according to claim 1 or 2,
the buffer portion has an attachment end portion attached to an inner surface of the first end edge portion or the second end edge portion.
4. The packaging bag according to any one of claims 1 to 3,
the first face portion, the second face portion, and the cushioning portion are formed of the same material.
5. The packaging bag according to any one of claims 1 to 4,
the cushion portion is suspended in a state of being folded in two between the first end edge portion and the second end edge portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-212651 | 2018-11-13 | ||
| JP2018212651 | 2018-11-13 | ||
| PCT/JP2019/044411 WO2020100915A1 (en) | 2018-11-13 | 2019-11-12 | Packaging bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112996735A true CN112996735A (en) | 2021-06-18 |
Family
ID=70731376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980074465.2A Pending CN112996735A (en) | 2018-11-13 | 2019-11-12 | Packaging bag (WU JI KE LI) |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20220002059A1 (en) |
| JP (1) | JP7268687B2 (en) |
| CN (1) | CN112996735A (en) |
| WO (1) | WO2020100915A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11702261B2 (en) | 2017-06-26 | 2023-07-18 | David Paul Goodrich | Expanded slit sheet cushioning products with novel reduced dimension slit patterns |
| US11440305B2 (en) * | 2017-06-26 | 2022-09-13 | David Paul Goodrich | Embossed paper in combination with paper cushioning for shipping envelopes |
| US11401090B2 (en) * | 2017-06-26 | 2022-08-02 | David Paul Goodrich | Expanded slit sheet cushioning products with novel slit pattern and paper properties |
| CN112373949A (en) * | 2020-11-14 | 2021-02-19 | 东莞市茶山捷锐模具加工厂 | Honeycomb formula buffering wrapping bag |
| WO2024035824A1 (en) * | 2022-08-10 | 2024-02-15 | David Paul Goodrich | Improved paper cushioned shipping envelopes and methods of making the same |
| EP4306440A1 (en) * | 2022-08-22 | 2024-01-17 | Beta (Shenzhen) Package Products Co., Ltd | Buffer pad and packaging bag |
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| CN105492342A (en) * | 2013-11-11 | 2016-04-13 | 住友电木株式会社 | Produce packaging bag and produce packaged body |
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| JP2004244024A (en) * | 2003-02-10 | 2004-09-02 | Sankei:Kk | Transporting container for commodity or the like |
| JP3165722U (en) * | 2010-11-11 | 2011-02-03 | 実 横内 | Paper bag |
| TWM489153U (en) * | 2014-03-19 | 2014-11-01 | Chih-Hao Feng | Shock absorbing collision avoidance box |
| JP6690630B2 (en) * | 2017-12-04 | 2020-04-28 | 王子ホールディングス株式会社 | Packaging bag manufacturing method |
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2019
- 2019-11-12 US US17/293,098 patent/US20220002059A1/en active Pending
- 2019-11-12 JP JP2020556125A patent/JP7268687B2/en active Active
- 2019-11-12 CN CN201980074465.2A patent/CN112996735A/en active Pending
- 2019-11-12 WO PCT/JP2019/044411 patent/WO2020100915A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1359346A (en) * | 1999-06-02 | 2002-07-17 | S·C·约翰逊家贮公司 | Multi-layered freezer stroage bag |
| JP2007238142A (en) * | 2006-03-09 | 2007-09-20 | Kuniharu Nagahashi | Paper-made envelope |
| CN101104461A (en) * | 2006-07-13 | 2008-01-16 | 东芝电梯株式会社 | Suspension packing device |
| CN103079968A (en) * | 2010-07-01 | 2013-05-01 | 达妮埃拉·菲莱尼 | Cradle for transport and shipment without danger of breaking brittle and precious objects |
| CN104837740A (en) * | 2012-08-27 | 2015-08-12 | 史蒂文·迈克尔·斯泰克 | Package article and method |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2020100915A1 (en) | 2020-05-22 |
| JPWO2020100915A1 (en) | 2021-09-30 |
| US20220002059A1 (en) | 2022-01-06 |
| JP7268687B2 (en) | 2023-05-08 |
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