JP5636568B2 - Easy-to-fold shopping bag and folded shopping bag storage - Google Patents

Description

The present invention relates to a shopping bag that is easy to fold.

  It is said that plastic bags received at supermarkets should be used repeatedly and effectively to use valuable oil resources, but they are not very effective. One of the factors is difficulty in folding shopping bags. Even if you fold the shopping bag vertically and horizontally, there is nothing to hold down, so the thickness will increase and eventually it will expand and lose its shape. Moreover, even if it is put in a pocket, a handbag, etc., there is nothing that can be pressed, so it is easily deformed.

  Conventionally, there has been little known how to fold a shopping bag so that it is small and not bulky. The only known method is to fold the sheet vertically into four and fold the bottom part of the band into the vertical end of the band and overlap. A 45-degree line is formed. These are sequentially folded into a right-angled isosceles triangle. The last remaining handle is pushed into the gap between the folded strips and stopped. Although it differs depending on the relationship between the width and the length of the plastic bag, when it was tried with a plastic bag that was close, it had to be repeated 11 to 16 times in total. (See Example 2) Thus, the folding method was troublesome, the folded shape was a triangle, and it was thick. The triangular shape is difficult to handle. It was not known how to fold it into a thin, small rectangle.

  From the beginning, there has never been a shopping bag that is easy to fold. The problems with plastic bags are that they are crumpled, crumpled, bulky, difficult to understand in size (not big or small), difficult to fold, difficult to compact, difficult to keep shape when folded, shopping When going to, when it was put in a pocket or a handbag, the folded one collapsed or it was difficult to carry.

The actual registration No. 3132291 "shopping bag" Japanese Patent Document 1 to facilitate folding the plastic bags, since handbag part 7 of the plastic bags is wrinkled by take along by hand, so as to facilitate extending wrinkles made and prevention of wrinkles The lateral width of the heat seal part at the top of the handbag 7 is increased. It does not suggest how to fold shopping bags.

Some eco-bag-type foldable shopping bags can be folded with a flap with a locking piece or stored in a pocket after folding, but a part of the handle made of folded cloth is stored. There was nothing that housed the folded body. When the handle part and the handle part are folded, the handle part and the handle part are bulky and hard (hard to bend), which is in the way. If the handle is simply folded and the part is shared, it will not be bulky. There is no waste. There has never been such a thing. It is important to be thin and easy to carry. In terms of easy portability, lightness is also important.
Noto 3132291 “Plastic Bag” Gazette

        It was not known how to fold a plastic shopping bag into a thin rectangle. In addition, there was no shopping bag made in consideration of folding after use. Various types of eco-bag-type shopping bags have been proposed, but there is no one that can be used as a storage part for a folded bag.

        The problem to be solved by the present invention is that, by repeatedly using a plastic bag, it is easy to fold into a thin and small rectangle so as to contribute to reducing the usage of the plastic bag, and in addition to this, it is folded. It is to provide a plastic bag that is stable and easy to carry.

        The present invention is characterized by reducing the use of a plastic bag by a plastic bag that is thin and can be folded into a small rectangle.

An easy-to-fold plastic shopping bag according to claim 1 has a U-shape at the center of the upper part of the main body 10 having a width W and a length L and having a bottom 101 joined linearly, having a town 11 having a depth Y on both sides. Are provided with a handle portion 12 having a width X equal to or smaller than the depth Y and having a length N and a straight end joined to the upper end 121, or an inverted L having an upper end having a width XU. In the plastic bag, the handle portion 12 is formed in a letter shape and the parallel portion in the vertical direction has a width X. The tie piece 14 is provided in the center of the U-shaped recess, or the tie piece 14 is not provided. And providing a storage portion 13 having the width X or width XU and the length M equal to or less than the length N, which shares most of the upper portion of the handle portion 12, and serves as a folding target when folding. The folding mark 15 is provided at the length L / 5 from the upper end 121.

The easy-to-fold plastic shopping bag according to claim 1 is a thin sheet, and plastic such as polyethylene is easy to use. A tube-shaped thin sheet bottom 101 provided with M-shaped towns 11 on both sides is joined linearly. Joining in a straight line means heat sealing (thermal fusion), adhesion, or the like. In the case of a material that can be supplied only in the form of a sheet, both ends may be continuously joined to form a tube and then processed.

  The shape of the conventional plastic shopping bag is a U-shaped central portion at the top of the main body 10 having a town 11 having a depth Y on both sides and having a width W and a length L joined to a bottom 101 in a straight line. A recess is provided. On both sides, a handle portion 12 having a width X of a depth Y or less and a length N and having an upper end 121 joined linearly is provided, or the upper end is formed in an inverted L shape having a width XU, and parallel parts A handle 12 having a width X is provided. The knot 14 is provided at the center of the U-shaped recess, or the knot 14 is not provided.

The feature of this shopping bag is that the upper part of the handle portion 12 of the conventional shopping bag is shared as the storage portion 13, and a folding mark that is a target of folding when folded on a part of the main body 10 15 is provided. Although most of the upper part of the handle part 12 is shared as the storage part 13, the shape is not changed at all. When the shopping bag is folded, most of the upper portion of the handle portion 12 is used as the storage portion 13.

  As for the shape of the handle portion 12 of the conventional shopping bag, there are a rectangular shape and a shape having an inverted L shape at the upper end, a pointed tip, and an inward direction. The width of the rectangular shape is X, the width of the upper end of the inverted L-shaped one is XU, and the width of the parallel portion is X.

  In addition, there are two types of conventional shopping bags, one with a tie piece 14 in the U-shaped recess at the top of the main body 10 (usually of this type) and one without a tie piece 14. Good.

  The width of the handle portion 12 of the conventional shopping bag varies from narrow to wide for both X and XU. If it is 1/4 of the width W of the main body 10, it is just good to store. This is because, as will be described later, when the shopping bag is folded, the main body 10 is vertically folded into four. However, it may be narrow or wide. In general, in the small-sized shopping bag, the width X of the handle portion 12 is wider (ratio) than the width W of the main body 10, and the large-sized shopping bag is narrow. Moreover, if the upper end portion has an inverted L shape, if XL is wide, it is easy to store. Even if X and XL are narrow, the stability after storage is good by using the protrusion prevention means as described later. Moreover, it can respond to the width of a handle part also by how to fold (after-mentioned). (The B type folding method is compatible with narrow ones.)

  The folding mark 15 (hereinafter simply abbreviated as the mark 15) is a target for folding when folding. There are shapes, holes, printing, and the like in the way of providing them. If there is a knot 14, the tip of the knot 14 is used as a mark 15. A step is provided on the side surface of the tie piece 14 to form a mark 15. A concave portion or a convex portion is provided on the side surface of the knot piece 14 to form the mark 15. A hole is made in the knot 14 to make a mark 15. For example, a mark 15 may be displayed on the knot 14 by printing.

  When there is no tie piece 14, the handle part 12 (including the storage part 13) is used. A step is provided at the inner opening of the handle portion 12 (housing portion 13) to form a mark 15. A concave portion or a convex portion is provided in the inner opening portion to form a mark 15. In the case of a recess, since a load is applied to the handle portion 12, care should be taken such as rounding so as not to tear. A hole having various shapes is formed in the handle portion 12 to form a mark 15. Since the load is applied, it is better to make the hole small and avoid the sharp corners. A mark 15 is displayed on the handle portion 12 by printing.

  The mark 15 is a mark when the main body 10 that is vertically folded in four is bent in the horizontal direction for the first time, and corresponds to the lower end of the storage portion 13. The length of the storage unit 13 is set to be exactly M when folded according to the mark 15. That is, when the tip of the bottom portion 101 is bent according to the mark 15, the length of the main body 10 folded horizontally into four becomes the length M of the storage portion 13.

  That is, M becomes L / 5. Precisely, if the thickness of the folded main body 10 is T, M = L / 5 + T. However, since T is thin and the accommodating portion 13 is flexible, there is no problem even if M = L / 5. Rather, T is often thicker depending on how the main body 10 is folded. When examining a conventional plastic shopping bag, the length N of the handle portion 12 is longer than L / 5, either for passing the hand.

  By attaching the mark 15, the main body 10 can be bent very easily, and the length M of the storage portion 13 can be accurately recognized by appearance.

  Conventionally, there are various lengths of plastic bag knots 14. In some cases, the position of the tip portion approached the position of the mark 15. I haven't found what exactly matches the position of the mark 15, but I haven't researched it extensively, so there may be something that just fits. However, even if there is something that fits perfectly, while designing the length of many knots 14, the mark that folds the shopping bag just by accidentally matching the position of the mark 15 It is thought that there was no recognition of trying to make it.

There are two ways to fold this plastic bag. For the A type, spread the empty plastic bag on a flat one and use your palm to draw air from the bottom 101 toward the storage unit 13. Push to slide, flatten and fold vertically. Similarly, it is rubbed with the palm of the hand so as to remove the air inside (push and slide), and then folded in two vertically (for convenience, it is folded in four vertically). The bottom portion 101 of the belt-shaped object is folded in two (accumulated) according to the mark 15. Further, the folded (folded) end is folded into two in accordance with the mark 15 (which is folded into four sideways for convenience). On top of this, the storage unit 13 is folded, the top sheet of the storage unit 13 is turned over, and the folded main body 10 is stored by folding it into four vertically and horizontally. (For details, see Example 1)

  The B-type folding method is suitable for the narrow storage section 13, and after folding it vertically two times at the beginning of the A type, fold back the lower side with an appropriate width before folding it vertically twice. (Bend) to adjust the width. Others are the same as those of the A type. (For details, see Example 2)

  The length N of the handle portion 12 is from the straight joint portion of the upper end 121 to the cut portion in the lateral direction of the U-shaped concave portion on the lower side. The length M of the storage portion 13 is obtained by adding the thickness T of the main body 10 that is folded in four in the vertical and horizontal directions to one fifth of the total length L of the main body 10. (L-M) / 4 means that the main body 10 is folded into four vertically and then the length M of the housing portion 13 is subtracted from the total length L of the main body 10 to be folded into four laterally. It is because it puts. To this is added the thickness T of the main body 10 that is folded in four vertically and horizontally.

  The width X of the handle portion 12 and the width X of the storage portion 13 are equal to or less than the depth Y of the town 11. A U-shaped recess is provided in the center of the upper portion of the main body 10 (by cutting), and the handle portion 12 and the storage portion 13 are stored. This is because when the portion 13 is formed, the inner vertical portion of the town 11 is cut so that the hand passes through the handle portion 12.

The easy-to-fold shopping bag according to claim 2 is provided with a protrusion preventing means having a function of preventing the folded main body 10 from coming out of the storage portion 13 in the storage portion 13 except for the mark 15 for folding. It is a thing of Claim 1.

The easy-to-fold plastic bag according to claim 2 prevents the main body 10 folded from the storage unit 13 from appearing in the storage unit 13 except for the folding mark 15 from the easy-to-fold plastic bag according to claim 1. A protrusion preventing means having a function of (blocking) is provided. The protrusion prevention means contributes to an improvement in the stability of the folded shopping bag.

  The protrusion prevention means prevents the folded main body 10 from coming out of the storage portion 13, and increases the friction between the folded storage portion 13 and the folded main body 10 and the corner of the folded main body 10. In addition, there are those in which the folded main body 10 is difficult to come out of the storage unit 13.

  Specifically, the protrusion prevention means includes a protrusion prevention resistor piece 175, a protrusion prevention cut 171 (hereinafter simply referred to as a cut 171), a protrusion prevention joint 173, and a protrusion prevention partial joint 174. Anything after “and” above stores the folded main body 10, and then flips the top sheet of the storage portion 13, and then hangs on the corner of the folded main body 10 to prevent protrusion. To do. In addition, protruding means that the folded main body 10 accommodated from the accommodating part 13 comes out.

  The protrusion preventing resistor piece 175 is obtained by cutting the upper end of the storage portion 13 into a sawtooth shape. When the storage portion 13 is turned upside down, the sawtooth-like protrusion preventing resistance piece 175 is on the inner surface side and contacts the upper portion of the folded main body 10. Since the tip of the saw blade hits the upper part of the folded main body 10, it functions to prevent the main body 10 from protruding. Note that the saw-toothed portion is harder when the saw-tooth-like entire surface is heat-sealed (heat-sealed), which is more effective.

  The cut line 171 is provided above the inner end. The cut line 171 prevents the folded main body 10 from protruding. The inner side of the cut 171 is a holding piece 172. The folded main body 10 is stored in the storage section 13, and after turning over, it is hung on the corner of the folded main body 10 to prevent the folded main body 10 from protruding. The folded main body 10 is held.

  Even when the storage unit 13 is turned upside down, the cut 171 has an advantage that the cut (cut) portion is exposed, so that it can be easily applied to the corner of the folded main body 10. There are many other cuts 171. (See Example 3)

  Since the cut 171 can be performed simultaneously with the cutting of the entire main body 10, it is convenient in terms of the process. The tip of the cut line 171 may be made into a small circle or a J-shape to prevent tearing.

  The inner side is the side facing the center of the main body 10. More specifically, the storage unit 13 is the cut side. In this specification, it is also expressed as an open part. The end portion is an end portion, and there are an upper portion and a lower portion where the upper end 131 is joined linearly.

  The protrusion prevention joint 173 is obtained by co-joining four sheets in a short line shape or a dot shape at the lower part of the inner end portion where the upper end 131 of the storage portion 13 is joined linearly. Even after the folded main body 10 is stored in the storage portion 13 and the uppermost sheet is turned upside down, the upper end 131 and the protrusion preventing joint 173 are in an inverted L shape. The corners of the folded main body 10 are hooked to prevent protrusion.

  The protrusion preventing joint 173 and the protrusion preventing partial joint 174 (described later in detail) may be short linear, curved, or dotted. The angle is normally provided perpendicular to the straight upper end 131 joined, but may be inclined so that the tip is directed outward (outside of the shopping bag). Alternatively, the straight lower end may be a spot (spot). Even if it is as small as a dot, it can be prevented from protruding when it is hung on the folded main body 10.

  The four protrusion prevention joints 173 are jointly joined, and the protrusion prevention partial joint 174 is a joint of two pieces on the front and back sides. (Details below)

  Although the four protrusion prevention joints 173 are jointed together, the joint portion is the inner lower portion of the portion where the upper end 131 of the storage portion 13 is joined linearly. Don't be.

  Since the protrusion prevention joint 173 and the cut line 171 are processed at the same time when four sheets are jointed, it is convenient in processing. However, since the protrusion prevention partial joint 174 is joined two pieces each on the front and back, a non-adhesive sheet must be inserted between them. I must.

  The protrusion prevention partial joint 174 is provided with two protrusion prevention joints 173 on the front and back sides. That's why "parts" are attached. The installation location, purpose, function, and effect are the same as the protrusion prevention joint 173.

With the front and back, when the plastic bag is spread and placed on a table or the like, the upper surface is the front and the lower surface is the back. You may think that the side where the name of the shopping bag is written is the front and the plain side opposite is the back. The front and back two sheets means two sheets continuously from the front surface or the back surface. There are two storage portions 13 on the left and right sides, and a total of four storage portions 13. However, since it does not know which storage portion 13 the folded main body 10 can be put in, the four storage portions 13 are each provided with a protrusion preventing partial joint 174. It was a sheet. Since the protrusion prevention partial joint 174 is provided on each of the two front and back surfaces, it does not get in the way when the hand is passed through the handle portion 12.

The easy-to-fold shopping bag according to claim 3 , except for the folding mark 15, after folding, joining the first sheet and the second sheet of the storage unit 13 and the third sheet and the fourth sheet The lift-up preventing means is provided so as to remain bonded to the sheet.

Easy shopping bag folded according to claim 3, except for the mark 15 for folding the easy plastic bags folding according to claim 1, after folding, the first sheet accommodating portion 13 sheet and the second sheet A lifting prevention means is provided so that the bonding and the bonding between the third sheet and the fourth sheet remain.

  The lifting prevention means that the top sheet of the storage unit 13 is turned over and the folded main body 10 is stored, and then the top sheet of the storage unit 13 and the second sheet from above are separated, The top sheet of the storage unit 13 is prevented from floating. The purpose is to prevent the end of the uppermost sheet from being lifted after the folded main body 10 is stored in the storage unit 13 and turned upside down, thereby increasing the stability after folding. As the means, after folding, the uppermost sheet of the storage unit 13 and the second sheet from the top are joined. Therefore, as described above, the bonding between the first sheet and the second sheet of the storage unit 13 and the bonding between the third sheet and the fourth sheet remain.

  Specifically, the lifting prevention means is provided on each of the two front and back surfaces of the upper part of the inner opening part of the handle part 12 (slightly below the mark 15). The reason for this is that at this position, it does not get in the way when the top sheet of the storage unit 13 is turned over, and prevents the top sheet from floating after turning over. The reason for using two on each side is to pass the hand through the handle portion 12. In order to provide lifting prevention means on each of the two front and back surfaces, there are a lifting prevention partial joint 181, a lifting prevention weak joint 182, and a lifting prevention point joint 183. The lifting prevention partial bonding 181 is performed by bonding such as heat sealing with a non-adhesive heat-resistant sheet, plate, or the like sandwiched between the second and third sheets.

  It is disadvantageous in terms of the manufacturing process that a non-adhesive heat-resistant sheet or the like is sandwiched between the second and third sheets for bonding. Since it is convenient if all four sheets can be processed at the same time, a weak joint 182 for preventing lifting is performed. The weakly-lifting weak joint 182 is a method in which a heat insulating sheet is sandwiched between the heat sealer and the sheet, or the temperature of the heater is lowered to lower the temperature of the heat sealer to lower the joining force. Since the lifting prevention force may be weak, the four sheets are joined together with a weak joining force. When the hand is passed through the handle part 12, the weak bonding force between the second and third sheets is released depending on the force of passing the hand, and the first and second sheets and the third and fourth sheets are joined. And the uppermost sheet after folding is prevented from being lifted.

  Point joining is a kind of weak joining. The floating prevention point joint 183 is a spot joint and is joined when four sheets are used together. Although it is a normal heat seal, the joining force is weak because it is dotted and has a small area. The second and third sheets are peeled off by the force of passing the hand through the handle part 12, and the first, second, third, and fourth sheets remain connected and function as a lift prevention means. Fulfill. When experimenting with a diameter of 1 mm, when the 2nd sheet of the 1st sheet, the 2nd sheet, and the 2nd sheet of the 3rd sheet and the 4th sheet were peeled off, the 2nd sheet and the 3rd sheet were separated. The second, second and third and fourth sheets remained connected. The same was true for 1 × 2 mm. When the diameter was 2 mm, the joining force was strong and the sheet of the main body 10 was torn. Although it will vary somewhat depending on the material, thickness, room temperature, etc. of the sheet of the main body 10, it is thought that the general tendency can be grasped. In addition, it is an example of an experimental result, Comprising: It is not restrict | limited to this numerical value. Note that two lifting prevention point joints 183 may be provided as a spare.

The invention of claim 1 is the same as a conventional plastic shopping bag. The required amount and cost of the material are not changed at all, and the shape after folding is thin and small, It is convenient to carry and has the effect that used plastic bags can be used over and over again. Therefore, there is an effect that it contributes to the reduction of shopping bags.

The invention of claim 2 does not change the required amount and cost of the material compared to the conventional plastic shopping bag, has stability after folding (it is not easy to collapse), is convenient for carrying, and is a used cash register. The bag can be easily reused, contributing to the reduction of plastic bags. Since the protrusion preventing means is provided, the folded main body 10 stored in the storage portion 13 does not protrude, and the stability after folding is improved.

In the invention of claim 3 , since the shape after folding is thin, small rectangular, convenient for carrying, and provided with the anti-lifting means 18, the stability after folding is improved (the shape does not collapse) ), There is an effect that it becomes easier to use.

        By using plastic bags repeatedly, we have reduced the use of plastic bags, thereby realizing the purpose of effective use of petroleum resources with easy-to-fold plastic bags. Hereinafter, the best mode for carrying out the invention will be described by way of examples.

A plastic bag that is easy to fold according to the first embodiment will be described with reference to FIG. FIG. 1 shows a plastic bag of the prior art and a plastic bag of Example 1. The thing of Example 1 improves the shopping bag. A part of a handle part of a conventional shopping bag of the prior art is used as a storage part, and a mark for folding is provided.

  FIG. 1A shows a front view of a conventional shopping bag. The bottom 101 of the tube-like thin sheet body 10 of plastic such as polyethylene having a depth Y on both sides and a M-shaped cross-section 11 is heat-sealed (heat-sealed) and joined linearly. . The width of the main body 10 is W and the length is L. A U-shaped recess is provided in the upper center, a handle 12 is provided on both sides, and a knot 14 is provided in the center of the U-shaped recess.

(B) is a sectional view taken along the line AA of (A). The upper handle 12 has a cross section at the bottom, not a cross section. For ease of explanation, the drawing is considerably modified. Actually, they are in close contact with each other in a straight line. Here, the upper and lower sides are considered to be the state when the shopping bag 1 is held by hand, and the upper end 121 of the handle portion 12 is the upper side and the bottom portion 101 is the lower side.

  (C) shows the front view of another conventional shopping bag. The upper part of the handle part 12 has an inverted L shape, and the tip is sharpened. Let XU be the width of the upper end. The width of the lower part of the upper part to the central part and the lower part is X. The knot piece 14 provided in the U-shaped recess in the upper center is removed. Others are the same as those of (A).

  Even if the depth Y of the town 11 is slightly smaller than the width XU of the upper portion of the handle portion 12 and the storage portion 13, the width X of the middle portion and the lower portion of the handle portion 12 is narrow and cut. Because there is no problem.

(D) shows the front view of the shopping bag of Example 1. FIG. The shape is almost the same as that of the conventional shopping bag (A). Since the knot piece 14 provided in the center of the U-shaped recess also serves as a folding mark 15 (hereinafter simply abbreviated as a mark 15), only the length is determined. The tip of the knot 14 is a mark 15. Although the shape is the same, most of the handle portion 12 becomes the storage portion 13. That is, the portion of the length M from the top of the handle portion 12 is the storage portion 13. M corresponds to 1/5 of the total length L. The place where the line extending the mark 15 horizontally hits is the lower end of the storage portion 13. Others are the same as those of (A).

  Although the length M of the storage portion 13 is 1/5 of the length L of the main body 10 in the above description, the thickness T of the main body 10 that is folded into four in both length and width must be added. Since the sheet constituting the main body 10 is thin, the folded thickness is small. There is also flexibility in the seats, so there is some flexibility.

A feature of the easy-to-fold shopping bag 1 of the first embodiment is that a part of the handle portion 12 is used as a storage portion 13 and a folding mark 15 is provided.

  The storage part 13 is a part of the handle part 12 in terms of shape, to be exact, most. That is, the width X of the storage portion 13 is the same as the width X of the handle portion 12, and the length M of the storage portion 13 is 1/5 of the length L of the main body 10. The length M of the storage portion 13 is understood by the mark 15. In addition, since the upper end 121 of the handle part 12 and the upper end 131 of the storage part 13 are common, if the upper end 121 of the handle part 12 is joined linearly, the upper end 131 of the storage part 13 will also be joined linearly.

  There is a difference between the handle portion 12 and the storage portion 13 in addition to the length. The handle portion 12 is formed by joining the tips 121 of two belt-like sheets (handle portion elements) each having a V-shaped cross section, which constitute the town 11, in a straight line (four sheets). One for each, and two for the main body 10 as a whole. On the other hand, the storage portion 13 is formed by linearly joining leading ends 131 of strip-shaped sheets (handle portion elements) folded in a V shape that constitute both side ends of the town 11 (two sheets), Two on each side and four on the entire body 10. (In terms of shape, a total of four tips 131 of the storage portion 13 are also joined linearly.)

  There are other ways to provide the mark 15 in addition to the tip of the knot 14. (E) shows another mark 15 for folding. Both are provided on the knot 14. In (1), a hole is provided at a position corresponding to the mark 15 of the knot 14. The shape of the hole may be any shape, but in view of folding in the vertical direction, the horizontally long shape is preferable. (2) shows two holes for the mark 15. (3) is provided with a step having a narrow upper portion at a position corresponding to the mark 15 of the knot 14. In (4), a step having a wide upper portion is provided at a position corresponding to the mark 15 of the knot 14. (5) is a projection provided at a portion corresponding to the mark 15 of the knot 14. In (6), a recess is provided at a position corresponding to the mark 15 of the knot 14. In addition, the mark 15 may be shown by printing.

(F) shows how to fold the shopping bag of Example 1. One of the two types of A-type folding is shown. The B type will be described in the second embodiment. A one-dot chain line indicates a center line to be folded, and is folded in the direction of the arrow. (1) Take out the product etc. from the plastic bag after use, spread the main body 10 on a flat surface such as a table, etc., and slide it from the bottom part 101 toward the handle part 12 with the palm of the hand so as to remove the air inside. make it flat. (2) Fold it in the vertical direction. At this time as well, it is pushed and slid by rubbing with the palm of the hand from the bottom 101 toward the handle 12, and the air inside is evacuated and flattened. Half of the knot 14 is at the bottom of the drawing.

  (3) Fold it further in the vertical direction. It will be folded vertically. At this time, the air is rubbed sufficiently in the direction from the bottom 101 to the handle 12 so as to remove the air inside. Half of the knot 14 is on the right side of the top surface. The tip of the knot 14 is a mark 15. (4) The left side bottom 101 is aligned with the mark 15 and bent in the lateral direction.

  (5) Further, the left bent tip is aligned with the mark 15 and bent. That is, it is folded in four horizontally. Basically, it is simple and easy because it folds in both the vertical and horizontal directions and then only two. (6) The right storage part 13 of (5) above is folded to the left and stacked. (7) Turn over the top sheet of the storage unit 13.

  (7) To turn it over, put the thumb and little finger of the left hand under the uppermost sheet of the storage unit 13, and place the index finger, middle finger, and ring finger under the entire folded storage unit. The state other than the top one (the rest of the whole) is sandwiched. Next, (8) shows that the uppermost sheet is sandwiched between the thumb and index finger of the right hand or between the thumb and index finger and the middle finger and is about to turn over. In the drawing, only the index of the right hand is shown.

  (9) shows a state in the middle of turning over. Turn over the top sheet as shown by the arrow.

The above (F) shows an example of the folding method, and other folding methods may be used. As for the usage of the shopping bag, if the central tie piece 14 is long, the tie pieces 14 may be tied as required.

  (G) shows a conventional method of folding into a right isosceles triangle. As shown in (1) and (2), the bottom part of the plastic bag folded in the vertical direction is folded around an alternate long and short dash line of 45 degrees as shown in the left end of (3). Next, (4) it is folded at right angles to the belt-like end portions (lines at both ends, horizontal lines). Next, (5) fold along the diagonal line. In this way, it is sequentially folded into a right isosceles triangle shape. Fold about 11-16 times in total. Finally, the remaining handle is inserted into the folded gap of the main body, fixed, and completed. It becomes a right isosceles triangle.

  The width X of the handle portion 12 and the storage portion 13 may be wide or narrow. However, when the width X is 1/4 of the width W of the main body 10 or the plus alpha position, the folded main body 10 can be easily stored as the storage portion 13. Increasing the width X of the handle portion 12 and the storage portion 13 does not increase the material requirement. The width W and length L of the main body 10 are the same as those of a normal shopping bag. Only the cutting loss is reduced. That is, when cutting, the width X of the handle portion 12 and the storage portion 13 is merely made wider than the width of the handle portion of a normal shopping bag.

  The material used is polyethylene in Example 1, but is not limited to plastic, and any thin sheet-like material may be used as long as it satisfies the suitability of strength, flexibility, durability, price, and the like. If it can be obtained only in a continuous sheet form, both ends may be joined continuously to form a tube. When a new sheet-like compatible material appears in the future, this may be done.

The usage as a shopping bag is made by putting the purchased item in the main body 10 and putting the hands in the handle parts 12, 12 at the upper ends. The used plastic shopping bag 1 is folded after all the inside is taken out.

The shopping bag 1 shown in the first embodiment has the same function as a shopping bag, and the required amount and cost of the material are not changed at all. The back shape is also thin, rectangular, and folded with a chitin. There is also some stability (it is hard to lose shape), it is convenient to carry, and it can be used over and over again, contributing to reducing plastic bags. effective.

A plastic bag that can be easily folded according to the second embodiment will be described with reference to FIG. The thing of Example 2 is the thing similar to that of Example 1, and added air bleeding outside the mark 15. FIG. 2A is a front view of the plastic bag 1 of Example 2 that is easy to fold. Except for the tie piece 14, the handle portion 12 is provided with a step having a narrow upper portion to form a mark 15. Further, an air vent 16 is provided for facilitating air remaining in the main body 10 when folding. The air vent 16 is a small hole and is provided in a bent portion when it is first folded in the lateral direction.

  (B) is the one in which the mark 15 of (A) is changed to a step with a wide width at the top of the handle portion 12 and the air vent 16 is increased. The shape of the air vent 16 is also changed. The air vent 16 is for venting the residual air in the main body 10 and may be a small cut, a cross, a V shape, a semicircle, a small hole close to a point (indicated by a cross in the figure), or the like. Small cuts are inconspicuous and have the effect of venting air, and those provided in the longitudinal direction are particularly effective without the effect of tearing the sheet. The air vent 16 is provided not only at the folded portion when folded in the lateral direction for the first time but also at the folded portion when folded for the second time. The air vent 16 may be provided at a location other than the bent portion when folded in the lateral direction. Since the air vent 16 leaks water, it is better to avoid the place near the bottom 101. Others are the same as those of (A).

  (C) is a handle 15 provided with a mark 15. The upper part of the mark 15 is the storage part 13 and the lower part is the handle part 12. (1) is provided with a convex object on the inner side, (2) is provided with a concave object (object) on the inner side, and (3) is provided with a hole in the central part to form a mark 15. The shape of the hole 15 is not limited to a circle.

  (D) makes the upper end of the handle part 12 (cum storage part 13) into an inverted L shape, and makes the length N of the handle part 12 and the length M of the storage part 13 the same. That is, the valley portion of the upper concave portion becomes the mark 15. Others are the same as those of (A).

(E) shows the B type folding method of the shopping bag of Example 2. The B type folding method is suitable when the width of the handle portion 12 (cum storage portion 13) is narrow.

  The folding method is as follows: (1) As with the A type, spread the main body 10 of the used shopping bag on a flat surface such as a table, and use your palm to evacuate the air from the bottom 101 toward the handle 12. Push to slide and flatten. A one-dot chain line indicates a center line to be folded, and is folded in the direction of the arrow. (2) The lower part is bent with a narrow width around a one-dot chain line. The half width of the right end knot 14 is a mark for bending. In addition, the direction of folding is described with a knot 14 attached. In the case where the knot piece 14 is not provided, a mark such as an unevenness may be provided at the bottom of the U-shaped recess. This bending is performed for width adjustment. At this time as well, it is pushed and slid by rubbing with the palm of the hand from the bottom 101 toward the handle 12, and the air inside is evacuated and flattened.

  (3) Fold it further in the vertical direction. At this time, the air is rubbed sufficiently in the direction from the bottom 101 to the handle 12 so as to remove the air inside. The knot 14 is on the right side of the top surface. The tip of the knot 14 is a mark 15 (next lateral folding). (4) The left side bottom 101 is aligned with the mark 15 and bent in the lateral direction.

  (5) The rest is the same as the A type folding method.

The easy-to-fold shopping bag of Example 3 will be described with reference to FIG. The thing of Example 3 improves the shopping bag. The protrusion 15 is provided with a protrusion prevention means for preventing the mark 15 and the folded main body 10 from protruding from the storage portion 13.

FIG. 3A is a front view of an easy-to-fold shopping bag 1 according to the third embodiment. A protrusion preventing cut (hereinafter simply referred to as a cut) 171 is provided at the inner open end of the upper end 131 of the storage portion 13 as a protrusion preventing means. As shown in the enlarged circle, a small circle for preventing tearing may be provided at the tip of the cut 171. Alternatively, the tip may be J-shaped (semicircle). The inner side (small piece) of the cut line 171 is a holding piece 172. The folding method may be either A type or B type. (Depending on the width X of the storage unit 13.) The holding piece 172 stores the folded main body 10 in the storage unit 13, turns it over, hangs on the corner of the folded main body 10, and the folded main body 10 protrudes. This prevents the main body 10 from being folded. (See (B) and (C))

  (B) shows the front view after folding the thing of the width | variety X of the accommodating part 13 wide. The state where the holding piece 172 is hung on the corner of the folded main body 10 is shown. Since the holding piece 172 is hung, the storage portion 13 cannot be removed. (The folded main body 10 does not protrude.)

  (C) shows the front view after folding the thing of the width | variety X of the accommodating part 13 being narrow. (A type folding method) A state in which the holding piece 172 is hung on the corner of the folded main body 10 is shown. The length of the cut line 171 is adjusted according to the width X of the storage unit 13. Since the holding piece 172 is hung, even if the width of the storage portion 13 is narrow, the storage portion 13 does not come off.

  In (D), the upper portion of the storage portion 13 is an inverted L-shape and the width is XU. A short protrusion preventing joint 173 is provided at the inner end of the upper end 131 of the storage part 13 as a protrusion preventing means. The protrusion preventing joint 173 prevents the main body 10 folded from the storage portion 13 from protruding. After turning the storage unit 13 upside down, the protrusion preventing joint 173 is hung on the corner of the folded main body 10. Even after the storage portion 13 is turned over, the protrusion preventing joint 173 forms an L shape. See (H). Note that a cut line 171 may be provided in the inverted L shape of (D) as shown in (A). The protrusion prevention joint 173 joints the four sheets together, but since it is at the upper end, it does not get in the way when the hand is passed through the handle part 12.

  (E) is a protrusion-preventing joint 173 with the lower part facing outwards at the inner end of the upper end 131 of the rectangular storage part 13. Since the lower part is directed outward, the stored folded main body 10 is difficult to protrude outside. Others are the same as (D).

  (F) is a case where a small dot-like protrusion preventing joint 173 is provided at the inner end of the upper end 131 of the rectangular storage part 13. The protrusion preventing joint 173 may be a short linear shape as in (D) or (E), or may be a dotted shape as in (F). Since the dot shape is confusing in the drawing, it is indicated by a cross. The intersection of the x marks indicates the position of the dot-like protrusion prevention joint 173. Even if it is punctiform, if it hits a corner, the folded main body 10 does not protrude. Others are the same as (D).

  (G) is a short linear protrusion preventing portion as a protrusion preventing means for preventing the folded main body 10 stored at the inner end of the upper end 131 of the rectangular storage portion 13 from protruding outside. A joint 174 is provided. The protrusion prevention partial joint 174 is formed by sandwiching a non-adhesive heat-resistant sheet or the like between the second sheet and the third sheet, and then joining two sheets each on the front and back sides. The storage unit 13 is composed of two pieces each on the front and back sides, and if the two pieces on the front and back sides are joined, the folded main body 10 can be prevented from protruding outside. When passing the hand through the handle portion 12, it does not get in the way and there is no problem. However, the processing takes extra steps such as sandwiching a non-adhesive heat-resistant sheet.

  (H) is a front view showing a state after folding (turning over) the storage section 13 shown in (D). A protrusion preventing joint 173 is hung on the corner of the stored main body 10.

  (I) is provided with various cut lines 171 (those whose tip is not cut) at the inner open part end of the upper end 131 of the storage part 13. (1) is provided with an oblique straight cut 171.

  (2) is a front view showing a place where a corner of the folded main body 10 is hung on the cut line 171 after turning over (1). A corner of the main body 10 comes out from the oblique cut line 171 and is hung and held. If the top sheet is turned upside down, the ears of the upper end 131 will be shaped like a lid on the cut line 171, and the corners of the folded main body 10 may be difficult to enter the cut line 171. It is good to put it in the cut line 171 by lowering it a little.

  (3) is provided with an arc-shaped cut 171. The holding state of the main body 10 after folding is the same as that shown in (2).

  (4) is provided with a linear cut line 171 having an oblique width. The holding state of the main body 10 after folding is the same as that shown in (2). Since the cut line 171 has a width, it is easy to put the corner of the folded main body 10.

  (5) is provided with a linear cut 171 in the horizontal direction. The holding state of the main body 10 after folding is the same as that shown in (2). Insert the main body 10 at an angle.

  (6) is provided with a linear cut 171 in the vertical direction. The holding state of the main body 10 after folding is the same as that shown in (2). Insert the main body 10 at an angle.

  (7) is provided with a cut line 171 in the shape of a T-shape. The holding state of the main body 10 after folding is the same as that shown in (2). Insert the main body 10 at an angle.

  In addition, in (1) to (7) other than (4), a small circle for preventing tearing may be attached to the tip, or a J-shaped tip may be used. Moreover, you may give a width | variety to the cut | interruption 171 like (4).

  (J) is an improvement of the cut 171. In (1), the cut 171 is bent into a V shape, and the inside of the storage portion 13 is cut into a V shape so that the holding piece 172 has the same width. When the holding piece 172 is hung on the corner of the folded main body 10, the holding piece 172 bent into a V shape extends and becomes longer. If the slit 171 of (1) is adopted when the width X of the storage portion 13 is narrow, the fulcrum (base) 1721 of the holding piece 172 will be at a high position, and the storage portion 13 will not easily come off, contributing to improved stability.

  (2) shows the extended state when the holding piece 172 of (1) is hung on the corner of the folded main body 10. (Folded body 10 is omitted)

  (3) is obtained by rounding the V-shaped shape of the holding piece 172 of (1) by rounding it.

  (4) shows an extended state when the holding piece 172 of (3) is hung on the corner of the folded main body 10. (Folded body 10 is omitted)

  (K) is a protruding anti-resistance piece 175 that is cut into the shape of a sawtooth (vertical sawtooth, side shape of a factory roof) at the upper end of the storage section 13. After folding, the storage portion 13 is turned over, so that the sawtooth-like protrusion preventing resistance piece 175 is on the inner surface side (not on the inner side of the left and right sides of the storage portion 13 but on the back side), and on the upper portion of the folded main body 10. Touch. Since the tip of the saw blade hits the upper part of the folded main body 10, it functions to prevent the main body 10 from protruding. Note that the saw-toothed portion is harder when the saw-tooth-like entire surface is heat-sealed (heat-sealed), which is more effective. The sawtooth shape may be a symmetrical W-shape. The pointed point of the tip will hit and resist. In addition, the diagonal line | wire of the serrated part of drawing shows what was heat-sealed on the whole surface. (In the drawing, those without full heat seal are omitted.)

  The folding method and other usage are the same as those in the second embodiment. What is necessary is just to match the bottom part 101 with the mark 15 when folding.

The shopping bag shown in Example 3 has the same function as a shopping bag, and the required amount and cost of materials are not changed at all. The rear shape is also a thin rectangle, and it is stable (not easily deformed). That is, the widths of the handle portion 12 and the storage portion 13 do not have to be uniform (the entire width is the same), are easily folded by the mark 15, and are provided with a protrusion preventing means, so that the folded main body 10 protrudes. Absent. It is convenient to carry, can be used repeatedly and has the effect of contributing to the reduction of plastic bags.

The easy-to-fold shopping bag of Example 4 will be described with reference to FIG. The fourth embodiment is similar to the third embodiment, and is provided with a protrusion preventing partial joint 174 (see (G) of the third embodiment) as a protrusion preventing means on the inner upper portion of the receiving portion 13. In the lower part on the inner side of the portion 13, as a means for preventing lifting, a lifting prevention joint is provided.

  (A) is that of Example 3 (A), but is provided with a protrusion-preventing partial joint 174 as a protrusion-preventing means at the upper part inside the storage part 13, and the inner lower part of the storage part 13 (a little below the mark 15, exactly FIG. 6 is a front view of the handle portion 12) provided with a lifting prevention partial joint 181 as a lifting prevention means. The protrusion preventing partial joint 174 has a diagonal shape with the lower side facing the outside toward the left side storage portion 13, and a dotted shape slightly below the right side storage portion 13 (represented by an X mark in the drawing, The point of intersection indicates the position.) Others are the same as those of Example 3 (A).

  The anti-lifting partial joint 181 stores the folded main body 10 in the storage unit 13 and prevents the uppermost sheet (of the storage unit 13) from floating after turning over. 13 below the inner opening of 13, slightly below the mark 15 of the handle 12, in the horizontal direction (the direction is not limited to the horizontal direction) 1 each (2 each when the front and back are in total, the total of the main body 10 is a total of 4 To be provided). The lifting prevention partial joints 181 are joined two on each side. This is because the hand is passed through the handle portion 12. The joining method of the floating prevention partial joint 181 is the same as that of the protrusion prevention partial joint 174. Because of the floating prevention partial joint 181, it is possible to prevent the uppermost sheet of the storage unit 13 from floating after folding. The folding method and other usage are the same as those in Example 3 (A).

  (B) is provided with a protrusion-preventing partial joint 174 as a protrusion preventive means in the upper part on the inner side of the storage part 13 in a vertical direction, slightly below the inner lower part of the storage part 13 (slightly below the mark 15; more precisely, the handle part 12). 2) is a partial front view of a structure in which a short lifting prevention weak joint 182 is provided as a lifting prevention means.

    Since the lift-off prevention partial bonding 181 is bonded two by two on the front and back sides, a non-adhesive heat-resistant sheet or the like must be sandwiched between the second and third sheets, which is disadvantageous in the manufacturing process. . It would be advantageous if all four sheets could be processed simultaneously. Since the lifting prevention means may have a weak bonding force, the lifting prevention weak bonding 182 is performed. The weakly-lifting weak joint 182 is a method in which a heat insulating sheet is sandwiched between the heat sealer and the sheet, or the temperature of the heater is lowered to lower the temperature of the heat sealer to lower the joining force. Since the lifting prevention force may be weak, the four sheets are joined together with a weak joining force. When the hand is passed through the handle part 12, the weak joining force is released by the force of passing the hand, and the second and third sheets are peeled off. The connection between the first sheet and the second sheet, the third sheet and the fourth sheet remains, and the sheet is prevented from being lifted. The lifting prevention partial joint 181 may be changed to the lifting prevention weak joint 182. The folding method and other usage are the same as those in (A).

  (C) is provided with a protrusion-preventing partial joint 174 in the vertical direction as a protrusion preventing means in the upper part on the inner side of the storage part 13, slightly below the inner lower part of the storage part 13 (a little below the mark 15, more precisely the handle part 12. ) Is a partial front view of a device provided with a lifting prevention point joint 183 as a lifting prevention means. In the drawing, it is indicated by “x”, and the intersection of “x” indicates the position of the floating prevention point joint 183.

  As a floating prevention means, a floating prevention point joint 183 which is a kind of weak joint is provided slightly below the lower part of the inner opening of the storage part 13, that is, slightly below the handle part 12 and slightly below the mark 15. The floating prevention point joint 183 is a spot joint and is joined when four sheets are used together. Although it is a normal heat seal, the joining force is weak because it is dotted and has a small area. When experimenting with a diameter of about 1 mm, when the 2nd sheet of the 1st sheet, the 2nd sheet, and the 2nd sheet of the 3rd / 4th sheet are peeled off, the 2nd sheet and the 3rd sheet are separated. The first, second, third, and fourth pages remained connected. The same was true for 1 × 2 mm. When the diameter was 2 mm, the joining force was strong and the sheet of the main body 10 was torn. Although it will vary somewhat depending on the material and thickness of the sheet of the main body 10, it is thought that the general tendency can be grasped. However, this numerical value is a reference value and is not limited to this numerical value. The second and third sheets are peeled off by the force of passing the handle 12 and the first and second sheets and the third and fourth sheets remain connected and prevent lifting. Fulfill the role of It may be used in combination with the lifting prevention weak joint 182 of (B). Others are the same as those of (A). The folding method and other usage are the same as those in (A).

      In the fourth embodiment, since the mark 15 is provided, it is easy to fold and depends on the protrusion-preventing partial joint 174. After folding, the folded main body 10 does not protrude, and the uppermost sheet floats to prevent lifting. Therefore, there is an effect that the shape does not have to be lost.

      The material of the easy-to-fold shopping bag 1 of Example 5 is not selected, but if it is made of a thin and strong cloth such as nylon or polyester, it is easy to fold, and after putting the folded main body 10 into the storage part 13, the storage part 13 is easy to turn over. Good sliding. It is not bulky. light. Convenient to carry. Therefore, there are effects such as helping to reduce shopping bags.

The easy-to-fold shopping bag 1 of the present invention can be applied to a shopping bag.

It is the front view which shows the plastic bag which is easy to fold of Example 1, the partial front view, sectional drawing, and explanatory drawing. It is the front view which shows the plastic bag which is easy to fold of Example 2, the partial front view, and explanatory drawing. It is the front view and partial front view which show the shopping bag which is easy to fold of Example 3. It is the front view and partial front view which show the shopping bag of Example 4 which is easy to fold.

Explanation of symbols

1 ………… Easy to fold shopping bag 10 ………… Main body 101 …… Bottom 11 ……… Machi 12 ……… Handle 121… Upper 122 …… Handle element 13 ……… Storage part 131 …… Upper 14 ......... Knotting piece 15 ......... Folding mark 16 ......... Air vent 171 ... Anti-protrusion cut 172 ... Holding piece 1721 ... Support point 173 ... Anti-extrusion joint 174 ... Anti-protrusion partial joint 175 ... Protrusion Preventing resistance piece 181 ... Lifting prevention partial joining 182 ... Lifting prevention weak joining 183 ... Lifting prevention point joining

Claims (3)

A U-shaped recess is provided at the center of the upper part of the body (10) having a width (W) and a length (L) having a town (11) with a depth Y on both sides and linearly joining the bottom (101), On both sides,
A handle portion (12) having a width X and a length N equal to or less than the depth Y and having the upper end (121) joined linearly;
Or, the upper end has an inverted L shape having a width XU, and the handle portion (12) having a vertical parallel portion having a width X is provided.
A knot (14) is provided in the center of the U-shaped recess,
Or, in a plastic bag without the knot (14),
A storage portion (13) having the width X or the width XU and the length M equal to or less than the length N that shares most of the upper portion of the handle portion (12) is provided,
An easy-to-fold shopping bag provided with a folding mark (15) at the length L / 5 from the upper end (121), which is a target for folding when folded. The protrusion prevention means provided with the function which prevents that the main body (10) folded from the accommodating part (13) comes out from the accommodating part (13) except the mark (15) for folding is provided in the accommodating part (13). Easy-to-fold shopping bags as described in 1. Except for the folding mark (15), after folding, the first sheet and the second sheet in the storage unit (13) and the third sheet and the fourth sheet remain bonded. The plastic bag which is easy to fold according to claim 1, provided with the above-described lifting prevention means.