JP4599624B2 - Method for producing rice bag and continuous sheet for rice bag - Google Patents

Description

  The present invention relates to a rice bag and a method for producing a continuous sheet for rice bags.

Conventionally, a bag has been used to open a rice bag (see, for example, Patent Document 1).
However, it is necessary to prepare a separate paddy, which is troublesome, and it is difficult to accurately tear the rice bag into a desired shape.
Accordingly, the present applicant has already proposed a utility model registration application as a rice bag having many advantages in addition to easy opening without using a bag (see Patent Document 2).
JP 2003-221044 A Utility Model Registration No. 3120596

However, in order to carry a heavy (heavy) rice bag by hand, there is a problem that the conventional rice bag is rounded or the finger of the above-mentioned Patent Document 2 becomes painful. In addition, the plastic rice bag may be torn from the place where the finger is hung.
Therefore, the present invention aims to provide a rice bag that can easily lift a heavy rice bag by hand, can be carried without accidentally dropping, and without causing finger pain, Another object is to provide a durable one without tearing each part of the rice bag. Another object of the present invention is to provide a method for producing a continuous sheet for rice bags that can be easily charged with rice grains.

  Accordingly, the present invention provides a rice bag in which the upper side, the lower side, the left side, and the right side of the plastic front sheet body and the back sheet body are fused to enclose rice grains. In the state, it has an unfused opening shape, and the upper side portion has the plastic non-woven band cloth arranged in the form of a sandwich between the sheet body and the back sheet body, and the non-woven band cloth has an intermediate portion. Except for the above, as shown above, a large number of small fused parts are arranged in the form of dots so as to form a large number of small-sized air passages for preventing rice grain discharge on both the left and right sides. In addition, the intermediate portion of the nonwoven fabric is interposed between the sheet body and the back sheet body in a folded state so as to be pulled out as a handle.

Moreover, it has a scattered point fusion line in which the above-described sheet body and the back sheet body are fused in a circular dotted shape along the lower edge of the intermediate portion of the non-woven fabric cloth in the folded state. .
In addition, the scattered small fused portions are elliptical or oval in shape, and at least in the vicinity of the intermediate portion, the small fused portions are arranged with a predetermined inclination angle in an upward inclination toward the center in the left-right direction. .
In addition, in the boundary region between one of the left and right sides of the nonwoven fabric and the intermediate portion, the nonwoven fabric, the sheet body, and the back sheet body are connected to the nonwoven fabric. A cut line portion was formed by welding so as to cross in the vertical direction.
In addition, the fusion band portion that fuses the left side portion and the right side portion of the front sheet body and the back sheet body with each other has a wide middle position, and a narrowed portion is formed at the middle middle position of the rice storage unit. .

And the manufacturing method of the continuous sheet | seat for rice bags which concerns on this invention WHEREIN: While giving a feed so that a mutual space | interval may gradually approach a strip | belt-shaped 1st plastic sheet and a strip | belt-shaped 2nd plastic sheet, this strip | belt-shaped plastic nonwoven fabric is said While feeding in the same direction as feeding, the plastic nonwoven fabric is cut in the width direction to form a nonwoven fabric, and the nonwoven fabric is applied to one of the first and second plastic sheets. It is a method of temporarily attaching and feeding downstream by the feeding, and fusing and integrating the nonwoven fabric as a sandwich between the first and second plastic sheets and simultaneously fusing the left and right sides. .
In addition, the plastic nonwoven fabric was folded in advance and wound into a roll shape so as to have a cross-sectional Z-shape or a combined shape of a cross-section Z-shape and an S-shape. This is a method of feeding while feeding from a nonwoven fabric roll.

According to the rice bag concerning the present invention, air can be vented while preventing rice grains from spilling. Further, the folded handle does not get in the way in the distribution process before sale, and after the customer buys it, the handle can be easily pulled out and carried easily. In addition, the strength can be kept sufficiently high without removing the handle. Furthermore, a structure that can be opened without using a bag can be used.
Moreover, the continuous sheet | seat for rice bags of this invention can introduce | transduce rice with the rice feeder generally used, and is applicable as it is.

Hereinafter, the present invention will be described in detail based on the illustrated embodiment.
In FIG. 1, an example is shown in which rice grains K are enclosed (stored) in the rice bag 20. FIG. 2 is an enlarged view showing the upper side 1 of the rice bag 20 and the vicinity thereof, and FIG. 5 is a main part showing an unsealed use state in which a part of the upper side 1 is cut out (removed) in order to discharge the rice grains K. It is an enlarged view.

1, 2, 5, 3, and 4, the rice bag 20 has a rectangular sheet-like sheet body 5 and a back sheet body 6 made of plastic. The lower side 2, the left side 3, and the right side 4 are fused by heating such as high frequency heating or nichrome wire heating, and used to enclose rice grains K as shown in FIG.
In the state before the rice grain K is introduced (that is, the rice is not yet introduced), the lower side 2 has an unfused opening shape (not shown), and an arrow in FIG. It is the state which cut | disconnected CC and isolate | separated (however, the upper and lower sides are drawn reversely).
A plastic non-woven band cloth 7 having a width W of 13 mm to 25 mm is disposed on the upper side portion 1 in a sandwich form between the sheet body 5 and the back sheet body 6 (see FIG. 4). This non-woven fabric 7 has a remaining portion excluding the intermediate portion A in the longitudinal direction (left and right direction), that is, the left and right sides 8 and 8 are provided with a number of small fused portions 9 arranged in the form of dots. The sheet body 5 and the back sheet body 6 are fused and integrated.
A large number of (small dimension) air passages 10 having a small distance M for preventing rice grain discharge (spilling) are formed between the large number of small fused portions 9.

  FIG. 6 shows an enlarged view of the main part of FIG. 2. As shown by an arrow E in FIG. 6, a small-sized air passage 10 formed between the adjacent small fused parts 9, 9 is replaced with a rice bag. The air in 20 can be discharged. Thus, by forming the small-sized air passage 10 as a degassing port, when the rice bag 20 enclosing the rice is stacked, the air inside is smoothly discharged (discharged) and collapses. Can be stacked in multiple stages. As described above, the nonwoven fabric cloth 7 is sandwiched between the fibers of the non-fused nonwoven fabric cloth 7 at a small interval M, and the air passes through the arrow E in FIG. It discharges (discharges) like this. The small distance M is set to 1 mm to 6 mm, preferably 2 mm to 5 mm. If the upper limit is exceeded, internal rice grains K may come out (discharge), and conversely, if it is less than the lower limit, fusion (described later) tends to be insufficient, or as a jig It is necessary to form a large number of heating protrusions that are too small, which is troublesome to manufacture and wears even though the period of use is short.

Moreover, the said intermediate part A of the nonwoven fabric cloth 7 is inserted in the Z-shaped folded state as shown in FIG. 3 so that it can be pulled out between the sheet body 5 and the back sheet body 6. . Thus, the intermediate portion A folded in a Z-shape is pulled out as indicated by an arrow F in FIG. 2, and the handle 11 is drawn as shown by the phantom line in FIG. 2 and FIGS. (Inverted U-shaped) can be formed.
The sheet body 5 and the back sheet body 6 are circularly formed along the lower edge of the intermediate portion A so as not to hang on the folded nonwoven fabric cloth 7 (with the nonwoven fabric cloth 7 removed). It has a dotted fusion line 12 fused in a dotted manner. In the illustrated example, a large number of circular spot portions 13 are arranged in a line to form a scattered dot fusion line 12. In addition, as long as the spot part 13 is a round shape, it is preferable that it is an elliptical shape or an oval shape, and the scattered point fusion row 12 may be 2 rows or 3 rows. .

In additional explanation, as shown in FIGS. 1, 2, and 5, the upper sheet 1 has the upper sheet 1 and the rear sheet 6 at an upper position (arrow) A storage bag portion 14 that opens to the center of the folding bag 7 is housed in the storage bag portion 14 so that it can be pulled out upward.
In addition, it is also preferable that the sheet body 5 and the back sheet body 6 are slightly fused at the uppermost end edge so that the unfolded nonwoven band fabric 7 does not jump out in the direction of the arrow F.

The storage bag portion 14 encloses the left side, the right side, and the lower side (bottom side) with the innermost end row of each of the small fused portions 9 on both the left and right sides 8 and 8 and the scattered point fused row 12. It can be said that it is an upper opening bag shape.
Further, the intermediate portion A of the nonwoven fabric cloth 7 is not limited to the case where it is folded in a Z shape as shown in FIG. Other folding shapes such as forming a plurality of character shapes are also free (not shown).

Next, as shown in FIGS. 1 to 7, the dotted small fused part 9 has an elliptical shape or an oval shape. In addition, all the elliptical or oval small fused portions 9 are disposed with a predetermined inclination angle θ in an upward inclination toward the center in the left-right direction.
Of the large number of small fused portions 9, at least in the vicinity of the intermediate portion A--that is, in the small fused portions 9 forming the left and right sides of the storage bag portion 14--toward the left and right center. Are arranged in an upwardly inclined shape with an inclination angle θ. The inclination angle θ is preferably 30 ° to 60 °, and particularly preferably 40 ° to 50 °. The reason for this is that, as shown in FIGS. 1 and 5, when a pulling-up force is applied to the pulled-out nonwoven fabric 7 as the handle 11, the upward external force acting on the left and right lower ends of the handle 11 This is because the small fused portion 9 is inclined in the direction along which it is advantageous in strength.

2, 7, and 8, cut out at one of the left and right sides 8, 8 of the nonwoven fabric cloth 7, the left side in the example, and the boundary zone Z between the intermediate portion A. A line portion 15 is formed. That is, the cut line portion 15 represents the sheet body 5, the nonwoven band cloth 7, and the back sheet body 6 so as to cross the nonwoven fabric cloth 7 in the vertical direction (width direction). Linearly).
That is, as shown in FIG. 7 and FIG. 8 (showing its DD cross section), the non-woven belt cloth 7 made of a plastic nonwoven fabric that is difficult to break by hand is once melted into a belt shape (linear shape) in the vertical direction. Therefore, it can be easily torn and can be easily torn along the cut line portion 15 by hand. Then, from the lower end of the cut line portion 15, the cut line portion 16 is connected and formed horizontally in the left direction. Thereby, from FIG. 1 and FIG. 2, it becomes possible to cut out as shown in FIG. That is, the left side 8 portion of the nonwoven fabric 7 is cut out to form a rice discharge port 17.
As shown in FIG. 7, it is preferable to form a small V-shaped notch 18 and a tear start short cut at the uppermost end of the cut line portion 15. Further, as shown in FIG. 7, a perforation 19 may be additionally formed.

  Next, as shown in FIG. 1 and FIG. 15 (A), the fusion band portions 23 and 24 for fusing the left side portion 3 and the right side portion 4 of the sheet body 5 and the back sheet body 6 to each other, A narrowed portion (constricted portion) 25 is formed at the upper and lower intermediate positions of the rice storage portion 21 with the upper and lower intermediate positions being wide. If comprised in this way, it can prevent that the internal rice grain K moves below, and can stand in the stable beautiful external appearance and attitude | position. That is, FIG. 15 (B) is a conventional rice bag 40, and the rice grains move downward, and it cannot be said that the appearance is beautiful. On the other hand, as shown in FIG. 15 (A), the present invention looks beautiful as if the waist is constricted and a lot of rice is stored, and can stand in a beautiful posture.

Next, FIGS. 9 to 14 show a manufacturing method of the continuous sheet 26 for manufacturing the rice bag 20 described above. That is, as shown in FIG. 9, the belt-like (long) first plastic sheet 31 and the belt-like (long) second plastic sheet 32 are intermittently fed so that the mutual distance H gradually approaches G. give. At this time, the first and second plastic sheets 31 and 32 are intermittently fed out (wound out) from the winding rolls 33 and 34.
On the other hand, a belt-like (long) plastic nonwoven fabric 36 is wound around another roll 35 in advance, and as shown in FIG. It is folded (in the direction) and wound around the non-woven roll 35 (in a roll). The cross-sectional shape of the folding is shown in the final FIG. 3, etc., such as a Z-shaped and S-shaped combination, or two or more Z-shaped or S-shaped, in addition to the Z-shaped Corresponding to the folded shape, it is folded in advance and wound around the nonwoven fabric roll 35. Feed J is given from the nonwoven fabric roll 35 while feeding the long nonwoven fabric 36. The feed J of the long belt-like nonwoven fabric 36 is intermittent and is in the same direction as the feed G of the first and second plastic sheets 31 and 32.

  As shown in FIGS. 9, 11, and 12, a polygonal cylindrical receiving roller 37 is installed in the width direction between the first and second plastic sheets 31, 32. The inner cylinder 37A is connected to the vacuum means and held in vacuum, and a number of suction holes are formed in the outer wall of the receiving roller 37 in the direction of arrow J. The nonwoven fabric 36 sent intermittently is adsorbed by the suction of air from the suction holes, and is attracted to one side of the polygon as shown in FIGS. Moreover, the polygonal cylindrical receiving roller 37 is arranged so as to approach the first plastic sheet 31 as well, and the temporary heating pusher 38 heated in the state shown in FIGS. The tip of the nonwoven fabric 36 is temporarily attached 41 to the first plastic sheet 31 by pressing in the N direction. That is, the receiving roller 37 performs an action like a cutting board.

Further, a fusing blade (or mechanical cutting blade) 42 is attached to the corner (ridge line portion) 39 of the hexagonal cylindrical receiving roller 37. Therefore, in the state of FIG. The blade (or cutting blade) 42 is also cut in the width direction at the same time to form the nonwoven fabric cloth 7. That is, the non-woven fabric 7 is formed by cutting and temporarily attached to the first plastic sheet 31.
When the fusing blade 42 in FIG. 11 is used, both ends in the width direction (upper side and lower side) of the intermediate portion (folded portion) A shown in FIG. If an external force is not applied to the folding part, the folding part is not unfolded. Therefore, it is possible to prevent the folding part from unexpectedly popping out in the direction of arrow F in FIG.
Along with the feeding G of the first plastic sheet 31, the temporarily attached nonwoven fabric 7 is fed downstream, and is fused between the first and second plastic sheets 31 and 32 by a fusing device 43 shown in FIG. The nonwoven fabric cloth 7 is fused and integrated as a sandwich. At the same time, the left and right side portions 3 and 4 are also fused.

  As can be seen from a comparison between FIG. 12 and FIG. 1 described above, the lower side portion 2 has not been fused yet, the upper side portion 1 is fused, and the left side portion 3 and the right side portion 4 are fused. This is already done at this time. 9 and FIG. 12 is cut by one pitch indicated by the reference symbol P in the subsequent cutting step shown in FIGS. 14 and 13 to form one rice bag 20.

As shown in FIG. 9 and FIG. 12, the uncut (non-separated continuous belt-shaped) rice bag continuous sheet 26 is usually wound once in a roll and stored.
Thereafter, in order to put rice grains K in the rice thrower 45, as shown in FIG. 13 and FIG. 14, the feed Q is given upside down from FIG. At 46, suction 47, 47 is made into an opening, and rice grains K are introduced from the hopper 48. Immediately after that, the lower side 2 as the upper end is attached to a fusion machine (ultrasonic or heat fusion) not shown. Then, the rice grains K are sealed and further cut as indicated by arrows C and C.
By this cutting, a state in which the handle 11 is in a state before being pulled out--a state in which the handle 11 is stored in the storage bag portion 14--is obtained in FIG.
In the present invention, the sheet body 5 and the back sheet body 6 are composed of, for example, a nylon outer layer and a polyethylene or polypropylene inner layer mounted and integrated. Moreover, the nonwoven fabric cloth 7 is made of plastics such as nylon, polyethylene, or polypropylene.

  As described above, the present invention provides a rice bag that encloses rice grains K by fusing the upper side 1, the lower side 2, the left side 3, and the right side 4 of the plastic front sheet body 5 and back sheet body 6. In this case, the lower side portion 2 has an unfused opening shape when no rice is introduced, and the upper side portion 1 is sandwiched between the sheet body 5 and the back sheet body 6 by the plastic non-woven fabric cloth 7 appearing above. Furthermore, the nonwoven fabric cloth 7 is small in the form of dots so that the left and right sides 8 and 8 form a large number of small-sized air passages 10 for preventing rice grain discharge except for the intermediate portion A. A large number of attachment portions 9 are arranged and fused and integrated with the above-described sheet body 5 and the back sheet body 6, and the intermediate portion A of the nonwoven fabric cloth 7 is folded and the above-described sheet body 5. As the handle 11 is interposed between the back sheet body 6 so as to be able to be pulled out, the nonwoven fabric cloth 7 is stored in the distribution process. It is not in the way, and it is convenient for the consumer to easily pull out and carry heavy rice as the handle 11. In addition, the portion corresponding to the base of the handle 11--the portion where a large number of scattered small fused portions 9 are arranged--is dispersed in the stress and does not cause stress concentration. There is also an advantage that the above problems do not occur. Further, when the rice bags are stacked, the air inside is smoothly discharged, and the rice bags can be stacked compactly.

  Further, a scattered dot fusion line 12 in which the above-mentioned sheet body 5 and the back sheet body 6 are fused in a circular dotted shape along the lower edge of the intermediate portion A of the nonwoven fabric cloth 7 in the folded state. Therefore, the inner air can be discharged more smoothly and fused in the form of circular scattered dots. is there.

  In addition, the scattered small fusing portions 9 are elliptical or oval in shape, and at least in the vicinity of the intermediate portion A, are arranged with a predetermined inclination angle θ in an upward inclination toward the center in the left-right direction. Since the handle 11 is held by hand, an elliptical or oval small fused portion 9 is arranged along the upward external force acting via the base portion of the handle 11. Thus, it is possible to prevent a problem that the force is transmitted from the sheet body 5 and the back sheet body 6 to the handle 11 and is torn.

  Further, in the boundary zone Z between one of the left and right sides 8 and 8 of the nonwoven fabric cloth 7 and the intermediate portion A, the nonwoven fabric cloth 7, the display sheet body 5 and the back sheet body. 6 is formed so that the non-woven band cloth 7 is fused so as to cross the non-woven band cloth 7 in the vertical direction. Torn (cut out) to form a rice outlet.

  Further, the fusion band portions 23 and 24 for fusing the left side portion 3 and the right side portion 4 of the front sheet body 5 and the back sheet body 6 are wide at the upper and lower intermediate positions so that the upper and lower sides of the rice storage portion 21 are Since the squeezed portion 25 is formed in the middle position, the rice grains are excessively gathered down like the conventional rice bag 40 shown in FIG. 15 (B), giving the feeling that the rice grains are not fully filled As shown in FIG. 15 (A), it is possible to stand in a beautiful posture and prevent the rice grains from moving too much downward.

  Next, according to the method for producing a continuous sheet for rice bags of the present invention, while feeding the belt-shaped first plastic sheet 31 and the belt-shaped second plastic sheet 32 so that the mutual distance H gradually approaches, While the belt-shaped plastic nonwoven fabric 36 is fed in the same direction as the feed G, the plastic nonwoven fabric 36 is cut in the width direction to form the nonwoven fabric cloth 7, and the nonwoven fabric cloth 7 is Temporarily attach 41 to one of the first and second plastic sheets 31 and 32, and feed downstream with the feed G. The nonwoven fabric is sandwiched between the first and second plastic sheets 31 and 32. At the same time as the band cloth 7 is fused and integrated, the non-woven band cloth 7 having a small width W for fusing the left and right side portions 3 and 4 can be skillfully provided in the sheet width direction. Moreover, a general rice feeder 45 can be used as it is as shown in FIG.

  Further, the plastic nonwoven fabric 36 is folded in advance so as to have a Z-shaped cross section and wound in a roll shape, and by feeding out the nonwoven fabric roll 35 wound in this roll shape, the feed J is given. The nonwoven fabric cloth 7 having a small width dimension W can be cleverly folded between the first and second plastic sheets 31 and 32.

It is a front view of the state where an embodiment of the present invention was shown and a handle was pulled out. It is a principal part enlarged front view. It is a figure which shows an example of a nonwoven fabric. It is an AA cross-sectional enlarged view of FIG. It is a principal part enlarged front view which shows a use condition. It is a principal part expansion explanatory drawing. It is a principal part enlarged view. It is DD sectional drawing of FIG. It is a front view which shows an example of a manufacturing method. It is a perspective view of a plastic nonwoven fabric. It is a principal part expansion explanatory drawing. It is a principal part expanded bottom view. It is explanatory drawing of a rice input process. It is explanatory drawing of a cutting process. It is perspective explanatory drawing which contrasted this invention and the prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper side part 2 Lower side part 3 Left side part 4 Right side part 5 Front sheet body 6 Back sheet body 7 Non-woven belt cloth 8 Right and left both sides 9 Small fused part
10 Small sized air passage
11 Handle
12 Scattered fusion line
15 Cut line
20 rice bags
21 Rice storage
23, 24 Cohesive zone
25 Aperture
26 Continuous sheet
31 First plastic sheet
32 Second plastic sheet
35 Nonwoven roll
36 Plastic nonwoven fabric
37 Receiving roller A Intermediate part G, J Feeding H Mutual spacing K Rice grain M Spacing Z Boundary area θ Inclination angle

Claims (6)

It is a rice bag having an upper side (1), a lower side (2), a left side (3), and a right side (4), which is composed of a plastic front sheet body (5) and a back sheet body (6) . And
The lower side portion (2) has an unfused opening shape when no rice is introduced, and the upper side portion (1) is formed by the plastic non-woven fabric cloth (7) and the sheet body (5) and the back sheet body. (6) is arranged in a sandwich,
The non-woven fabric cloth (7) has a dotted shape so that the right and left sides (8) and (8) form a large number of small-sized air passages (10) for preventing rice grain discharge, except for the intermediate part (A). A large number of small fused portions (9) on both the left and right sides (8) and (8) are arranged and fused and integrated with the sheet body (5) and the back sheet body (6).
The upper side (1) vicinity of the sheet body (5) and the back sheet body (6) is an intermediate portion (A) excluding the left and right sides (8) and (8), and the nonwoven fabric is in a folded state. By fusing and integrating with each other by means of a scattered dot fusion line (12) fused in a circular dotted shape along the lower edge of the belt cloth (7),
The intermediate portion (A) of the nonwoven fabric (7) is folded in the left and right and lower side (8) (8) on the left and right sides (8) and (8) on the left and right sides and below the spliced row (12). A rice bag characterized in that it is inserted as a handle (11) between the above-mentioned sheet body (5) and back sheet body (6) so as to be able to be pulled out. The scattered dot fusion line (12) is formed below the small fusion part (9) on both the left and right sides (8) and (8), and both ends of the scattered dot fusion line (12) and the left and right (8) ( 8) The rice bag according to claim 1 , wherein the inner end of each small fused part (9) overlaps in the width direction . In the boundary region (Z) between one of the left and right sides (8) and (8) of the nonwoven fabric (7) and the intermediate portion (A), the nonwoven fabric (7) and the above table The cut line part (15) which melt | fused the sheet body (5) and the said back sheet body (6) so that this nonwoven fabric cloth (7) might be crossed to an up-down direction was formed. Rice bag. The fusion band portions (23) and (24) for fusing the left side portion (3) and the right side portion (4) of the front sheet body (5) and the back sheet body (6) to each other have an upper and lower intermediate position. The rice bag according to 1, 2 or 3, wherein the squeezing portion (25) is formed at a middle position between the top and bottom of the rice storage portion (21) as a wide width. While feeding the strip-shaped first plastic sheet (31) and the strip-shaped second plastic sheet (32) so that the mutual distance (H) approaches gradually, the strip-shaped plastic nonwoven fabric (36) is While giving the feed (J) in the same direction as the feed (G), the plastic nonwoven fabric (36) is cut in the width direction to form the nonwoven fabric (7), and the nonwoven fabric (7) ) Is temporarily attached (41) to one of the first and second plastic sheets (31) and (32), and is sent downstream by the feed (G), and the first and second plastic sheets (31) ) (32) as a sandwich between the nonwoven fabric (7) and the left and right and left and right sides (8) (8) by the small fusion part (9) and the dotted fusion line (12) and at the same time fused integrally to surround the lower, to characterized in that the left and right sides of (3) (4) to fuse Method for producing a continuous sheet for the rice bag. The plastic nonwoven fabric (36) is folded in advance and wound in a roll shape so as to have a cross-sectional Z-shape or a combination of a cross-sectional Z-shape and an S-shape, and is wound in this roll shape. The method for producing a continuous sheet for rice bags according to claim 5, wherein the feed (J) is given while being fed from the non-woven fabric roll (35).

Images