JP4436952B2 - Waste paper collection bag and manufacturing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a used paper collection bag. More specifically, the present invention has a bag shape having a rectangular bottom when storing used paper, and is cut at a perforation provided in the bag after storing used paper, whereby a cross-shaped binding tape is formed on the side of the bag, The present invention relates to a used paper collection bag capable of binding used paper with the tape.
[0002]
[Prior art]
The collection and reuse of used paper such as newspapers, flyers, and magazines will save raw pulp resources and preserve forest resources at home and abroad. In addition, by collecting and reusing waste paper, it is possible to reduce the burden on garbage collection and disposal by local governments as solid waste. The use of waste paper is not only economically advantageous as a substitute for pulp, but also greatly contributes to resource environment problems. For this reason, collection of used paper such as newspapers from households is being actively promoted.
The collected used paper is sorted at the used paper collection stage. This process must be relied upon manually, but has a great influence on the subsequent mechanical treatment and quality of the used paper pulp. Conventionally, used paper such as newspapers, flyers and magazines has been stored in paper bags or plastic film bags and collected from each household. However, in order to sort out the waste paper, it was necessary to take it out of the bag once, which took a lot of work. For this reason, there has been a request from used paper collectors to provide used paper from homes in a state of being tied with a string, not in a bag. If it is in a state of being bound with a string, it can be made into a state where it can be easily selected by cutting the string.
However, in ordinary households, it is not so easy to provide used paper with a string tied. Newspapers after reading tend to be folded irregularly, and if leaflets are added, it is difficult to stack them as they are. It was necessary to use a special plastic container or the like in which a string could be installed.
For this reason, there has been a demand for a means for storing used paper that can easily put used paper into a state of being tied with a string without taking time and effort.
[0003]
[Problems to be solved by the invention]
The present invention forms a bag shape having a rectangular bottom surface when storing used paper, and is cut at a perforation provided in the bag after storing used paper, whereby a cross-shaped binding tape is formed on the side of the bag, and the used paper It is an object of the present invention to provide a used paper collection bag that can be easily put into a state in which used paper is bound with a string without binding labor.
[0004]
[Means for Solving the Problems]
As a result of intensive research to solve the above problems, the present inventor has found that four sets of sewing machines reach the bottom of the bag from the upper edge of the bag in the used paper recovery bag made of plastic film in which a rectangular bottom surface is formed when the used paper is stored. By placing eyes at the four corners of the bag, cutting the perforations after storing the used paper, forming a binding tape on the side of the bag, and binding the used paper with the tape, the used paper is easily bound with a string. It was found that by providing a paper cylinder in contact with the inner wall of the side surface inside the bag made of plastic film, the shape retention of the bag is improved, and it is easy to store and bind used paper. The present invention has been completed based on the findings.
That is, the present invention
(1) a rectangular bottom surface is formed at the time of paper accommodated in the plastic film made of paper collection bag the bag body of the rectangular parallelepiped Ru formed on the bottom surface in contact with the inner wall of the side surface of the plastic film bag, It has a rectangular parallelepiped paper tube that reaches the middle of the bag in the height direction from the bottom of the bag, has eight perforations that reach the bottom edge of the bag from the top edge of the plastic film bag, and contains eight sewing machines after storing used paper By separating the four corners of the rectangular parallelepiped bag portion as a cut portion in the eyes, two pairs of tapes facing each other for binding the waste paper stored on the upper edges of the four side surfaces of the rectangular parallelepiped bag portion A used paper collection bag, characterized in that a cross-shaped binding tape having
(2) The used paper collection bag according to item 1, wherein the upper edge of the bag of the eight perforations is provided with a notch, and
(3) The long tube-shaped plastic film 15 is continuously transferred to the gusset 16 to form the strip-shaped film 18 having a pair of V-shaped gusset portions 17 on both side edges, and then the both-side edges of the strip-shaped film. Two perforations 20 penetrating a total of four films of two surface films and two gusset portion films in the longitudinal direction of the belt-like film by the sewing blade 19 at a position shorter than the folding width of the gusset portion. Insert the heat-insulating cradle 23 between the gusset parts, press the C-shaped heat welding blade 24 from both sides of the cradle, and weld each surface film of the belt-like film and the gusset part film. A C-shaped inclined welding line 25 is formed, and two surface films and a gusset portion film are formed by a linear thermal welding blade 26 at the upper end of the C-shaped inclined welding line. The bottom edge welding line is formed by linear welding in the width direction of the belt-like film, and finally, the lower edge welding line is formed by the cutting blade 27 so that the C-shaped inclined welding line becomes the bottom of the bag. The method for producing a used paper collection bag according to claim 1, characterized in that the bag 28 made of a plastic film of the used paper collection bag is produced by cutting outside.
Is to provide.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The used paper collection bag of the present invention is a plastic film used paper collection bag in which a rectangular bottom surface is formed when used paper is stored. The used paper collection bag is in contact with the inner wall of the side surface of the plastic film bag and from the bottom of the bag to the middle in the height direction of the bag. A plurality of perforations extending from the upper edge of the plastic film bag to the bottom surface of the bag or in the vicinity thereof, and the stored used paper is bound by cutting at the perforations after storing the used paper It is a used paper collection bag in which a tape is formed on the side of the bag.
FIG. 1 (a) is a perspective view of a plastic film bag according to an embodiment of the used paper collection bag of the present invention, FIG. 1 (b) is a perspective view of a paper tube, and FIG. It is a perspective view which shows the state which accommodated the paper cylinder in the bag made from a plastic film, FIG.1 (d) is a perspective view which shows the state bound by the tape after accommodating a used paper. The used paper collection bag of the present invention is made of a plastic film, and has a paper bottom that is formed with a rectangular bottom surface when storing used paper, touches the inner wall of the side of the bag, and reaches the middle of the bag in the height direction from the bottom of the bag. ing. There is no restriction | limiting in particular in the plastic film to be used, For example, a low density polyethylene, a high density polyethylene, a linear low density polyethylene, a polypropylene etc. can be mentioned.
The plastic film bag of the used paper collection bag of the present invention has a plurality of perforations 1 reaching from the upper edge of the bag to the bottom surface of the bag or the vicinity thereof. Tapes 3 and 4 for binding the removed and stored waste paper are formed on the side of the bag. There is no restriction | limiting in particular in the dimension of the used paper collection bag of this invention, According to the kind of used paper to store, it can select suitably. When used as a used waste paper collection bag, the short side and the long side of the bottom surface are preferably about 24 to 26 cm and about 30 to 34 cm, respectively.
[0006]
In the used paper collection bag of the present invention, the plastic film bag is in contact with the inner wall of the side surface of the bag. A paper cylinder 5 is provided that reaches the middle of the bag in the height direction from the bottom of the bag. In FIG. 1C, the alternate long and short dash line indicates the upper edge of the paper tube. By having a paper tube in contact with the inner wall of the side surface of the plastic film bag, the shape retention of the plastic film bag is improved and the top surface shown in FIG. 1 (c) opens even when the bag is empty. Since the rectangular parallelepiped shape is maintained, it is easy to put and store the used paper in the bag. The height of the paper tube is preferably a height obtained by stacking used papers to be stored. The user stores the used paper in a plastic film used paper collection bag equipped with a paper tube, and when the upper surface of the stored used paper reaches the upper edge of the paper tube, the user determines that the amount of the used paper is appropriate. Can be united. When the used paper in the bag reaches an appropriate amount, the cut portion 2 is removed by cutting at the perforation 1 to form the tapes 3 and 4 for binding the used paper stored on the side of the bag. Thus, the used paper can be bound and deposited for collection as shown in FIG. When using a used paper collection bag made of plastic film that does not have a paper tube, binding the used paper with a tape results in the state shown in FIG. 2. Used paper can be deposited for collection.
Although there is no restriction | limiting in particular in the material of the paper cylinder used for the used paper collection bag of this invention, The craft paper etc. which are used for the conventional used paper collection bag can be used suitably. The amount of paper used in the paper tube used in the used paper collection bag of the present invention is about one-third compared to the conventional used paper collection bag, and compared with the case where the used paper collection bag is used. Can be saved significantly. In addition, since the conventional waste paper collection bag made of paper uses a large amount of adhesive on the bottom surface, when the waste paper collection bag is mixed with the waste paper, the adhesive causes the paper quality of the recycled paper to deteriorate. Since the paper cylinder used in the used paper collection bag of the present invention is simply coated with a thin streak of adhesive on the paper edge in order to process flat paper into a cylindrical shape, even if the paper cylinder is mixed into the used paper, There is no risk of paper quality degradation.
The plastic film bag used in the used paper collection bag of the present invention is normally transparent or nearly translucent, so it can be used by printing letters and designs on the paper tube provided inside the plastic film bag. Various information can be provided to the person, or the beauty can be enhanced.
[0007]
The used paper collection bag of the present invention is preferably provided with a notch at the upper edge of the perforated bag of the plastic film bag. FIG. 3 is a perspective view of another embodiment of the used paper collection bag of the present invention. In the used paper collection bag of this embodiment, a notch 6 is provided at the upper edge of the bag of the perforation 1 of the plastic film bag. By providing a notch at the upper edge of the perforated bag, the bag can be pulled from both sides of the perforated line and easily cut at the perforated line to form a binding tape.
The used paper collection bag of the present invention can supply a plastic film bag and a paper tube separately to the user, or can supply the user with the paper tube mounted on the plastic film bag. it can. Opening a folded plastic film bag, opening a folded paper tube and inserting it into it is not a time-consuming task, so supply the same number of plastic film bags and paper tubes to the user Then, it is preferable that the user opens the plastic film bag, inserts a paper tube, and uses it in the state shown in FIG. In this state, the used paper collection bag of the present invention is not different from the conventional paper or plastic film used paper collection bag in its form. For example, the newspaper after reading is folded and sequentially inserted. As they go, the newspapers that are thrown in are aligned and stacked according to the shape of the bag.
By using the used paper collection bag of the present invention, the used paper can be easily stored in the state of the bag when storing the used paper, and when depositing the used paper for collection, it should be in a state of being bound with tape without taking time and effort. Can do. Since the used paper collection bag of the present invention is composed of a plastic film bag, the tape that binds the used paper to be formed has the strength necessary for handling at the time of collection, and is easily cut at the used paper sorting site. be able to. Conventionally, sometimes waste paper was bundled and deposited for collection by a stretched tape yarn having a high strength, and it was sometimes troublesome to cut the yarn, but by using the waste paper collection bag of the present invention, Work problems are eliminated.
[0008]
4 (a) is a side view showing a folded state of the plastic film bag of the used paper collection bag of the present invention of the embodiment shown in FIG. 1, and FIG. 4 (b) is a side view of FIG. 4 (a). FIG. 4C is a partial development view showing a state of the bottom surface when the cut portion is removed by cutting at the perforation, and FIG. It is a side view which shows the state by which the pipe | tube was folded, FIG.4 (e) is a BB line | wire cut part end surface figure of FIG.4 (d). The used paper collection bag of this embodiment has gusset portions 8 on both side edges 7 of a plastic film bag, and a bottom edge 9 is linearly welded in the width direction. Each of the gusset portion film 10 and the bag surface film 11 The pair is welded in an oblique direction to both side edges of the bag from the gusset inward fold end 12 of the bag bottom edge to form a weld line 13. In addition, a pair of linear perforations 1 are provided, which penetrates a total of four films including two bag surface films and two gusset portion films and reaches the bag bottom edge from the bag upper edge. This perforation is provided at the position of the alternate long and short dash line C in FIG. Further, when the paper tube shown in FIGS. 4D and 4E is opened, the shape comes into contact with the inner wall of the side surface of the bag made of plastic film.
When the plastic film bag of the used paper collection bag of this embodiment is opened, the intersection 14 of the oblique welding line 13 and the side edge 7 becomes the top of the bottom rectangle, and the top of the state shown in FIG. It becomes a rectangular parallelepiped bag with an open surface. After the paper tube is opened and inserted into this bag and used paper is stored, the cut portions 2 formed at the four corners of the rectangular parallelepiped are cut and removed at the perforations, thereby forming a tape on each side of the rectangular parallelepiped. Therefore, the used paper stored by the tape can be bound and deposited for collection as shown in FIG. 1 (d). As shown in FIG. 4C, the tape 3 on the long side of the bottom surface is welded to each other by the welding line of the bottom edge 9, and the tape 4 on the short side of the bottom surface is welded in the oblique direction. Therefore, the welded portion has sufficient strength necessary for binding and handling the used waste paper.
[0009]
FIG. 5 is a process explanatory diagram of one embodiment of the method for producing a plastic film bag of the used paper collection bag of the present invention. (A) A long tubular plastic film 15 is continuously transferred to a gusset 16 to form a strip-shaped film 18 having a pair of V-shaped gusset portions 17 on both side edges. Next, the belt film transfer system is preferably switched to pitch transfer. (B) Two surface films in the longitudinal direction of the belt film by the sewing blade 19 at a position shorter than the folding width of the gusset portion from both side edges of the belt film. And two perforations 20 penetrating through a total of four films of two gusset portion films. (C) A hole 22 is opened by a punch 21 on the perforation. Although there is no restriction | limiting in particular in the shape of a hole, It is preferable that it is an ellipse shape etc. which have the smooth periphery without the intersection of a straight line. (D) Insert a heat-insulating cradle 23 between the gusset parts, press the C-shaped heat welding blades 24 from both sides of the cradle, and weld each surface film of the belt-like film and the gusset part film. A square-shaped inclined welding line 25 is formed. The C-shaped inclined welding line is formed at a position where the upper end and the center of the hole are substantially on the same line in the width direction of the belt-like film. (E) At the upper end of the C-shaped inclined welding line, a linear thermal welding blade 26 welds each of the two surface films and the gusset portion film linearly in the width direction of the belt-like film and forms a lower edge. Form weld lines. Finally, the cutting blade 27 cuts the outer edge of the lower edge welding line so that the C-shaped inclined welding line becomes the bottom of the bag, thereby completing the plastic film bag 28 of the used paper collection bag of the present invention. . According to the manufacturing method of this embodiment, a plastic film bag of the used paper collection bag of the embodiment of the present invention shown in FIG. 3 can be manufactured. Further, from the manufacturing process of the embodiment shown in FIG. 5, the plastic film bag of the used paper collection bag of the embodiment of the present invention shown in FIG. 1 is omitted by omitting the step (C) of making a hole on the perforation by the punch 21. Can be manufactured. The formation of (B) perforations, (C) holes, (D) C-shaped inclined weld lines and (E) lower edge weld lines can be performed in any order.
In the used paper collection bag of the present invention, the method for producing the paper tube is not particularly limited, and it can be produced by bonding the ends of the flat paper into a tubular shape and cutting it into an appropriate length. As long as the paper tube is dimensioned so that the inner wall of the side surface of the bag made of plastic film is in contact, there is no particular limitation on how to fold, but as shown in FIG. 4, it can be folded into the same shape as the bag made of plastic film. From the viewpoint of ease of handling by the user.
[0010]
【The invention's effect】
The used paper collection bag of the present invention has a rectangular shape with a rectangular bottom surface when storing used paper, has good shape retention of the bag, and is cut at the perforation provided in the bag after storing used paper. By binding the used paper with the tape, the used paper can be easily bound with a string without taking time and effort.
[Brief description of the drawings]
FIG. 1 is a perspective view of one embodiment of a used paper collection bag of the present invention.
FIG. 2 is an explanatory view of the use of a used paper collection bag made of plastic film without a paper tube.
FIG. 3 is a perspective view of another embodiment of the used paper collection bag of the present invention.
FIG. 4 is a side view, an end view of a cut portion, and a partial development view of one embodiment of a used paper collection bag of the present invention.
FIG. 5 is a process explanatory diagram of one embodiment of a method for producing a plastic film bag of a used paper collection bag according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Perforation 2 Cutting part 3 Tape 4 Tape 5 Paper cylinder 6 Notch 7 Side edge 8 Gazette part 9 Bottom edge 10 Gazette part film 11 Bag surface film 12 Folding end 13 in a gusset 13 Welding line 14 Intersection 15 of a welding line and a side edge Tubular plastic film 16 Gazetter 17 Gazette part 18 Strip-shaped film 19 Sewing blade 20 Perforation 21 Punch 22 Hole 23 Insulating cradle 24 C-shaped thermal welding blade 25 C-shaped inclined welding wire 26 Linear heat Welding blade 27 Cutting blade 28 Plastic film bag

Claims (3)

Rectangular bottom formed during waste paper accommodated in a plastic film made of paper collection bag the bag body of the rectangular parallelepiped Ru formed on the bottom surface in contact with the inner wall of the side surface of the plastic film bag, the bag bottom It comprises a paper tube having a rectangular parallelepiped shape to reach the middle portion in the height direction of the bag, has eight perforations of reaching Fukurosoko edge from the bag on the edge of the plastic film, rectangular in eight perforations after paper storage A cross shape having two pairs of tapes facing each other for binding waste paper stored on the upper edges of the four side surfaces of the rectangular parallelepiped bag portion by cutting off the four corners of the bag portion of the shape as a cut portion A used paper collection bag in which a binding tape is formed. The used paper collection bag according to claim 1, wherein a notch is provided at an upper edge of the bag of the eight perforations. A long tubular plastic film 15 is continuously transferred to a gusset 16 to form a strip-shaped film 18 having a pair of V-shaped gusset portions 17 on both side edges, and then a gusset portion from both side edges of the strip-shaped film. Two perforations 20 penetrating a total of four films of two surface films and two gusset portions films are placed in the longitudinal direction of the belt-like film by a sewing blade 19 at a position shorter than the folding width of the gusset. A heat-insulating cradle 23 is inserted between the two parts, and a C-shaped heat welding blade 24 is pressed from both sides of the cradle to weld each surface film of the belt-like film and the gusset part film to form a C-shape. In this case, the two surface films and the gusset portion film are all removed by a linear heat welding blade 26 at the upper end of the C-shaped inclined welding line. A lower edge weld line is formed by linearly welding in the width direction of the film, and finally, the cutting blade 27 is used on the outside of the lower edge weld line so that the C-shaped inclined weld line becomes the bottom of the bag. 2. The method for producing a used paper collection bag according to claim 1, wherein the bag is made of a plastic film which is cut to be used.

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