JP2001150553A - Delivery bag and method for manufacturing this delivery bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a delivery bag which need not be disposed of by sorting and is not a source for generation of much of refuse as well as a method for manufacturing this delivery bag. SOLUTION: In the method for manufacturing a delivery bag consisting of a peelable film laminated, through a pressure-sensitive adhesive layer, on the back film face of the bag having both lateral edges and bottom edges welded of a face film and a back film, (1) a process to feed a laminated film, consisting of the back film, a pressure-sensitive adhesive layer and the peelable film, which is twice as wide as the length of the bag, (2) a process to superpose the face film almost twice as wide as the length of the bag on the laminated film, (3) a process to form a replicated part on both lateral edges of the face film, (4) a process to weld the center parts of the face film and the back film in the longer direction, to form a center welding line, (5) a process to cut the center part of the center welding line in the longer direction, (6) a process to form a lax part of the film and switch from a continuous feed mode to an intermittent feed mode and (7) a process to fuse a laminate of each of the films to the bag width size and side-weld the fused parts, are provided. In addition, the delivery bag manufactured by the method is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a delivery bag and a method for producing the same. More specifically, the present invention provides an environment-friendly delivery bag that can be easily attached to a conveyed product, does not require separation and disposal, generates a small amount of trash, and does not generate harmful substances when incinerated. The present invention relates to a method for manufacturing a delivery bag capable of manufacturing a bag economically and stably.

[0002]

2. Description of the Related Art In recent years, the number of home delivery services handled by general households and companies has been rapidly increasing, and the content of such services also includes provision of services such as delivery of golf, skiing, refrigerated goods, and frozen goods, and non-store sales. The diversification and sophistication are progressing, for example, entering into related fields such as direct delivery from the production area, cash on delivery, and the emergence of international courier services that cross borders. Conventionally, the slips of these conveyed goods are handwritten on multiple copies of the destination, client, etc.,
Attached to the conveyed item as a slip, it was also used as a copy for the client and dealer. However, as the number of conveyed products has been increased, delivery bags that output sending slips by computer, insert the bags into bags, and affix to the conveyed products have come to be used. The delivery bag has a bag shape in which both side edges and a bottom edge of the front film and the back film are welded, and in many cases, the front film has a folded portion at a bag mouth, and a release paper is formed on the back film surface via an adhesive layer. A slip or the like is inserted in a bag, the release paper on the back side is peeled off, and the sheet is adhered to a conveyed product by an adhesive layer. The delivery bag is easier to use than a conventional copy-type handwritten slip, but has a problem that the structure is complicated and the production cost is high, and a large amount of dust is generated.

[0003]

DISCLOSURE OF THE INVENTION The present invention relates to an environment-friendly delivery bag that can be easily attached to a conveyed product, does not require separation and disposal, generates a small amount of trash, and does not generate harmful substances when incinerated. Another object of the present invention is to provide a method of manufacturing a delivery bag that can economically and stably manufacture the delivery bag.

[0004]

The inventor of the present invention has conducted intensive studies to solve the above-mentioned problems. As a result, the use of a release film as a release material reduces the amount of dust and streamlines the manufacturing process. In addition, productivity is improved by taking two delivery bags in the width direction of the long raw material film, and further, the amount of slack of the film between the continuous feeding step and the intermittent feeding step is detected. It has been found that stable production can be achieved by controlling the continuous feed rate, and the present invention has been completed based on this finding. That is, according to the present invention, (1) a release film is laminated via an adhesive layer on a back film surface of a bag formed by welding both side edges and a bottom edge of a front film and a back film;
In the method of manufacturing a delivery bag in which the front film has a folded portion at the bag mouth, (1) a laminated film consisting of a back film / adhesive layer / peeling film having a width twice as long as the length of the delivery bag is continuously fed. (2) a step of continuously feeding a front film having a width approximately twice as long as the length of the delivery bag, and superimposing the front film on the laminated film; (3)
A step of continuously folding both side edges of the front film by a folding device to form a folded portion; (4) a front roller and a back film are continuously welded in a longitudinal direction at a central portion of the film by a heat roller, and a central welding line is formed; Forming a (5)
A step of continuously cutting the front film, the back film, the pressure-sensitive adhesive layer and the release film in the longitudinal direction at the center of the central welding line by the slitter, (6) forming the slack portion of the film by applying the film to a step roll, and continuously. Step of converting from feeding to intermittent feeding equal to the bag width dimension, (7) Repeating intermittent feeding, cutting the laminated body of the front film, back film, adhesive layer and release film to the bag width dimension and cutting after side sealing or welding sealing 2. A method for producing a delivery bag according to claim 1, further comprising the steps of: (2) (8) a step of making continuous cuts in two portions of the peeling film in a longitudinal direction of the film by using a cutter. (3) The number of step rolls is one, the amount of slack in the slack portion of the film is detected, and when the amount of slack increases, the continuous feed speed is reduced. 3. The method for producing a delivery bag according to claim 1 or 2, wherein the continuous feeding speed is increased when the slack amount is reduced. (4) Both side edges and a bottom edge of the front film and the back film are welded, and the front film is welded. Has a folded part at the bag mouth, and has a release film laminated on the back film surface via an adhesive layer, wherein the release material is a release film, and (5) 5. The delivery bag according to claim 4, wherein the release film has a slit in the width direction of the bag at a position of 1/4 to 3/4 of the length of the bag.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The delivery bag of the present invention has both sides and bottom edges of a front film and a back film welded together, the front film has a folded portion at the bag mouth, and an adhesive layer is provided on the back film surface. In a delivery bag in which a release material is laminated, the release material is a release film.
In the delivery bag of the present invention, the release film preferably has a slit in the width direction of the bag at a position of 1/4 to 3/4 of the length of the bag. FIG. 1A is a plan view of one embodiment of the delivery bag of the present invention as viewed from the front side, and FIG.
FIG. 1C is an end view of a cut portion cut in the length direction, and FIG.
Is a plan view seen from the back side. In the delivery bag of this embodiment, a front film 1, a back film 2, an adhesive layer 3, and a release film 4 are laminated, and both side edges 5 of the front film and the back film are welded by fusing side seals. The bottom edge 6 is welded by a heat roller. The front film has a folded portion 7 at the bag mouth, and the release film has a slit 8 in the width direction of the bag. The front film and the back film of the delivery bag of the present invention are not particularly limited, but are preferably thin films such as a polyethylene film and a polypropylene film. The pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is not particularly limited. For example, a natural rubber, a synthetic rubber, a polyacrylate, a styrene-butadiene copolymer, a styrene-isoprene copolymer, or another elastic body, a tackifier, a plasticizer, or the like. Pressure-sensitive adhesive containing an agent, a filler, an antioxidant, and the like. Although there is no particular limitation on the release film, for example, a biaxially stretched polypropylene film, a biaxially stretched polyester film, etc., are films having greater rigidity than the front film and the back film, and the contact surface with the adhesive layer is coated with silicone or the like. It is preferable that the film is provided with releasability.

[0006] The folded portion of the front film of the delivery bag of the present invention can be either an outer fold or an inner fold, but is preferably an inner fold from the viewpoint of workability during use. The width of the folded portion is not particularly limited, but is preferably 5 to 30 mm, and more preferably 10 to 20 mm. By providing the folded portion at the bag opening of the front film, the work of inserting a slip or the like into the delivery bag becomes easy. In the delivery bag of the present invention, the release film has a slit in the width direction of the bag, and the slit is １ ／ to 袋 of the length of the bag.
It is preferably at the 3/4 position, and is 3/8 of the bag length
It is more preferably at a position of about, and more preferably at a position of １ ／ of the bag length as shown in FIG. By providing a slit in the width direction of the bag on the peeling film, one of the slit peeling films is peeled off and one of the delivery bags is adhered to the conveyed product, and then the remaining peeling film is peeled off and the remaining portion of the delivery bag is peeled off. Can be attached to the conveyed product, so that the workability of attaching the delivery bag is remarkably improved. The delivery bag of the present invention can be in a state where the pressure-sensitive adhesive does not exist in the slit portion of the release film in the pressure-sensitive adhesive layer. The portion where the pressure-sensitive adhesive does not exist is preferably 2 to 20 mm in width, more preferably 5 to 15 mm, across the slit of the release film. When the adhesive is not present in the slit portion of the peeling film, the work of peeling the peeling film becomes easy.

The method for producing a delivery bag of the present invention comprises the steps of (1)
A step of continuously feeding a laminated film comprising a back film / adhesive layer / peeling film having a width twice as long as the length of the delivery bag; (2) a front film having a width approximately twice as long as the length of the delivery bag. (3) a step of continuously folding both side edges of the front film by a folding device to form a folded portion, and (4) a front film and a back film by a heat roller. Is continuously welded in the longitudinal direction at the center of the film to form a central welding line, (5) the front film, the back film, the adhesive layer and the peeling film are continuously formed at the center of the central welding line by the slitter. (6) a step of forming a slack portion of the film by applying the film to a step roll, and converting the continuous feed to an intermittent feed equal to the bag width dimension; Repeat the feed, table film,
The method further includes a step of cutting the laminated body of the back film, the pressure-sensitive adhesive layer, and the release film after fusing side sealing or welding sealing to a bag width dimension. FIG. 2 is a process flow chart of one embodiment of the method for producing a delivery bag of the present invention. In this embodiment, the backing film / adhesive layer / peeling film laminated film 9 having a width twice as long as the length of the delivery bag is continuously fed out and has a width approximately twice as long as the length of the delivery bag. The front film 1 is continuously fed out and overlapped with the laminated film, and both side edges of the front film are continuously folded by the folding device 10 to form a folded portion. The formation of the folded portion is performed prior to the superposition with the laminated film, and the front film having the folded portion may be superimposed on the laminated film.

The front film and the laminated film are overlapped, and the folded film is formed on both side edges of the front film. The front roller and the back film are continuously welded in the longitudinal direction by the heat roller 11 at the center of the film. Then, the front film, the back film, the pressure-sensitive adhesive layer, and the release film are continuously cut in the longitudinal direction at the center of the central welding line by the slitter 12. By forming a central weld line and cutting at the center, the central weld line becomes a weld at the bottom edge of the delivery bag. According to the method of the present invention, two delivery bags can be simultaneously manufactured in the width direction of a long raw material film, so that compared with the conventional method of manufacturing one delivery bag in the width direction of the raw material film, And the productivity of the delivery bag is doubled. The film cut in the longitudinal direction at the center of the central welding line is applied to a step roll 15 between the continuous feed roller 13 and the intermittent feed roller 14 to form a slack portion 16 of the film, and the film is fed from the continuous feed. Convert to intermittent feeding equal to the bag width dimension of the bag. While repeatedly intermittently feeding the film, the reciprocating drive means 17 causes the fusing blade 1 to rotate.
8 is moved up and down, and the laminated body of the front film, the back film, the adhesive layer, and the release film is fusing side-sealed with the receiving roller 19 to a bag width dimension. By the fusing side seal, the front film and the back film are welded at both side edges, but since the release film is provided with a release property by coating such as silicone on the contact surface with the adhesive layer,
It is not welded to the back film. In the method of the present invention, cutting can be performed after the welding seal in place of the fusing side seal. However, from the viewpoint of productivity, the fusing side seal completed in one step is more preferable. In the conventional manufacturing method using release paper, fusing side sealing is not possible, and cutting after welding sealing was essential.However, in the method of the present invention, a releasing film is used as a release material, so that fusing side sealing is possible. Become. The delivery bag that has been fusing side-sealed by the fusing blade is taken up by the take-up conveyor 20, and the manufacturing process of the delivery bag 21 of the present invention is completed.

In the method for producing a delivery bag according to the present invention, it is preferable to provide a step of making continuous cuts in the longitudinal direction of the film at two places of the peeling film with a cutter. The position of the cutter 22 can be located before the heating roller 11 as shown in FIG. 2, or can be located after the heating roller, or can be located at the same position as the heating roller. The position of the continuous cut is preferably 1/8 to 3/8 of the film width from both side edges of the long release film.
By making two cuts at 1/8 to 3/8 of the film width, 1/4 to 3/4 of the length of the delivery bag
In the position (1), a slit in the width direction of the bag is formed in the release film. FIG. 3 is a drawing showing a state of the film between the heat roller 11 and the slitter 12 in the process flow diagram shown in FIG. 2, and FIG. 3 (a) is a plan view showing a state viewed from above, FIG. 3B is an end view of a cut portion cut in the film width direction, and FIG. 3C is a plan view showing a state viewed from below. FIG. 3 (a) and FIG.
(c) shows only the bag width of the delivery bag for convenience. The front film, the back film 2, the pressure-sensitive adhesive layer 3, and the release film 4 are laminated in this order. The front film has a folded portion 7 on both side edges thereof, and the front film and the back film are separated by a central welding line 23. Welded. In the peeling film 4, cuts 24 are formed at two places in the longitudinal direction of the film. The central welding line is cut at the center to form a welding line at the bottom edge of the delivery bag, and the cuts in the peeling film become slits in the peeling film of the delivery bag. According to the method of the present invention, two delivery bags can be obtained at the same time in the width direction of a long material film, so that excellent productivity can be achieved.

In the method for producing a delivery bag according to the present invention, the step roll is set to one, the slack amount in the slack portion of the film is detected, and when the slack amount increases, the continuous feed speed is reduced to reduce the slack amount. In such a case, it is preferable to increase the continuous feed speed. As shown in FIG.
5 is provided with a detector 25, and a signal sent from the detector is output to the continuous feed mechanism by the information output means 26 to control the continuous feed speed. FIG. 4 is an explanatory diagram showing one mode of the continuous feed control mechanism. In this embodiment,
The servo mechanism 28 adjusts the speed of the rotary drive source 27 for continuously feeding the film in the continuous processing step. Between the continuous feed roller 13 and the intermittent feed roller 14, an increase or decrease in the slack amount of the film slack portion 16 is detected. When the slack amount increases, the continuous feed roller is decelerated, and when the slack amount decreases, the continuous feed roller is decelerated. Increase the feed roller speed. A detection body 25 provided with a detected member 29 is hung on a step roll 15 which forms a slack portion by applying a film, and the sensor 3 for reduction detection which is arranged at an interval vertically above and below the detected member.
When the increase detecting sensor detects a member to be detected which is lowered due to an increase in the amount of slack in the slack portion, a deceleration command is servo-controlled via the deceleration command means 32. Input to the mechanism 28,
When the decrease detection sensor detects the detected member that rises due to the decrease in the slack amount in the slack portion, the speed increase command is set to NO.
It is input to the servo mechanism 28 via the speed increasing command means 33 constituting the T circuit. Accordingly, the speed of the continuous feed roller can be adjusted so that the detected member repeatedly moves up and down between the decrease detection sensor and the increase detection sensor during operation at a normal feed speed. As in this embodiment, by detecting the amount of slack in the slack portion of the film and controlling the continuous feed speed, strong tension is not applied to the film, so that the top film, the back film, the adhesive layer, and the peeling film are stacked. No misalignment occurs, and no twist occurs in the folded portion of the front film or the central welding wire. Further, in the fusing side sealing step, the delivery bag is not welded in a wavy shape, and a pinhole due to poor welding does not occur. As a result, it is possible to stably produce a delivery bag of extremely high quality.

[0011]

The delivery bag of the present invention is provided with a peeling film which is easy to peel off on the back side, so that it can be easily attached to a conveyed product, and since it is entirely made of plastic film, there is no need to separate and discard. Generates little garbage and does not emit harmful substances when incinerated. According to the method for producing a delivery bag of the present invention, two delivery bags are simultaneously formed in the width direction of the long film of the raw material, so that the delivery bag can be produced economically.

[Brief description of the drawings]

FIG. 1 is a plan view and a cut end view of one embodiment of the delivery bag of the present invention.

FIG. 2 is a process flow chart of one embodiment of the method for producing a delivery bag of the present invention.

FIG. 3 is a plan view showing a state of a film in the process system diagram shown in FIG. 2 and an end view of a cut portion.

FIG. 4 is an explanatory diagram showing one mode of a continuous feed control mechanism.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 front film 2 back film 3 adhesive layer 4 release film 5 side edge 6 bottom edge 7 folded portion 8 slit 9 laminated film 10 folding device 11 heat roller 12 slitter 13 continuous feed roller 14 intermittent feed roller 15 step roll 16 slack portion 17 Reciprocating drive means 18 Fusing blade 19 Receiving roller 20 Pick-up conveyor 21 Delivery bag 22 Cutter 23 Central welding line 24 Break 25 Detector 26 Information output means 27 Rotary drive source 28 Servo mechanism 29 Detected member 30 Sensor for detecting decrease 31 Increase detection Sensor 32 deceleration command means 33 speed increase command means

Claims (5)

[Claims] 1. A delivery film wherein a peeling film is laminated via an adhesive layer on a back film surface of a bag in which both side edges and a bottom edge of a front film and a back film are welded, and the front film has a folded portion at a bag mouth. In the bag manufacturing method, (1) a step of continuously sending out a laminated film composed of a back film / adhesive layer / peeling film having a width twice as long as the length of the delivery bag, and (2) a length of the length of the delivery bag. (4) a step of continuously sending out a front film having a width approximately twice as large as the above and stacking the front film on the laminated film; (3) a step of continuously folding both side edges of the front film by a folding device to form a folded portion; ) A step of continuously welding the front film and the back film in the longitudinal direction at the center of the film by a heat roller to form a central welding line; (5) a center of the central welding line by a slitter; In the step, the front film, the back film, the pressure-sensitive adhesive layer and the release film are continuously cut in the longitudinal direction. (6) The film is wrapped on a step roll to form a slack portion of the film, and intermittent equal to the bag width dimension from continuous feeding. (7) intermittent feed is repeated,
A method for producing a delivery bag, comprising a step of cutting a laminate of a front film, a back film, an adhesive layer, and a release film after fusing side sealing or welding sealing to a bag width dimension. 2. The method for producing a delivery bag according to claim 1, further comprising the step of: (8) making a continuous cut in the longitudinal direction of the film at two places of the peeling film with a cutter. 3. The method according to claim 1, wherein the step roll has one roll and detects the amount of slack in the slack portion of the film. When the slack amount increases, the continuous feed speed is reduced, and when the slack amount decreases, the continuous feed speed decreases. The method for producing a delivery bag according to claim 1 or 2, wherein the speed is increased. 4. A delivery in which both side edges and a bottom edge of a front film and a back film are welded, the front film has a folded portion at a bag mouth, and a release material is laminated on the back film surface via an adhesive layer. A delivery bag, wherein the release material is a release film. 5. The release film has a length of 1/4 to 3/3 of the length of the bag.
The delivery bag according to claim 4, wherein a slit is provided in the width direction of the bag at the position (4).