JP6606796B1 - Peeling holding type container carrying bag and method for manufacturing the same - Google Patents

Abstract

An object of the present invention is to provide a peel-and-hold type container transport bag that can be manufactured at a low cost with a simple structure and process, can be securely fitted to a container, and can be stably held. A bag body having a pair of sheet portions made of a thermoplastic resin material facing each other, an opening formed at an upper portion, and a bottom surface at a lower portion, both sheet portions of the bag body The inner side surface of the sheet portion is provided with a keep surface portion 2 having a predetermined width made of a thermoplastic resin material having a density lower than that of the sheet portion, and the keep surface portions face each other and adhere in close contact with each other. When inserted from the opening, the main body of the container is press-fitted between the keep surface parts, and the adhesion of the keep face parts at the press-fitting site can be peeled, and the container between the peeled keep face parts. Adopted a technical means to make it possible to maintain. [Selection] Figure 6

Description

  The present invention is an improvement of a container transport device, and more specifically, a peel-and-hold type container transport that can be manufactured at a low cost with a simple structure and process, and that can securely fit and stably hold the container. The present invention relates to a bag and a manufacturing method thereof.

  In convenience stores and fast food stores, when taking out drinks such as coffee and juice, foods such as oden and soup in a temporary container (a simple disposable type that is not sealed with a stopper), take this container It is convenient to be able to carry it stably without directly holding it.

  As such a transporting method, it is conceivable to first put the container directly into the bag. However, the stability is insufficient, the container is inclined in the bag, and contents such as drinks and juice may leak.

  Conventionally, in order to maintain the attitude of a container, a sheet in which a base with a hole such as cardboard is laid on the bottom of the bag and the container is raised in this hole is disclosed (for example, see Patent Document 1).

  However, in order to manufacture and stock the mount, there is a problem that the cost is increased and the setting work is troublesome, and it takes time to provide the product.

  Moreover, what can convey a container by a hand-held type is disclosed (for example, refer patent document 2). However, only one container can be transported per bag, and only a single size is supported, and the container body is exposed to the outside. There is a risk of contaminating the surroundings if such contents leak.

  Furthermore, there is disclosed a technique in which a spot joint is formed on a bag and the container is supported while the spot joint is peeled off (see Patent Document 3).

  However, in this container carrying bag, a heat-sealing device adapted to the arrangement pattern is necessary to form the spot joint portion. Further, when the container is inserted, it is supported locally at the spot joint, so that the spot joint may be a fulcrum and the stable holding balance of the container may be impaired.

Japanese Patent Laying-Open No. 2015-58956 JP 2008-80072 A Japanese Patent No. 5920754

  The present invention has been made in view of the above-described problems in the conventional container transport device, and the object of the present invention is to manufacture at low cost with a simple structure and process. An object of the present invention is to provide a peel-and-hold type container carrying bag that can be securely fitted to a container and stably held.

  Means employed by the present inventor for solving the above technical problem will be described with reference to the accompanying drawings.

That is, the present invention is a bag body in which a pair of sheet portions made of a thermoplastic resin material face each other, overlap each other, an opening is formed at the top, and a bottom surface at the bottom,
Some inner surfaces of the sheet portion of the bag, is provided a strip of keep surface portion having a predetermined width than the seat portion of thermoplastic material of low density, respectively, and these strip-shaped keep face each other Adhering in close contact with each other,
When the container is inserted from the opening, the main body of the container is press-fitted between the keep face parts, and the adhesion of the keep face parts at the press-fitting site can be peeled off,
And the boundary of the peeled keep surface part is abutted along the side surface of the container and is supported on the surface,
By adopting the technical means of enabling the container to be held between the peeled keep surface portions, the peel-and-hold type container carrying bag was completed.

  Moreover, in order to solve the said subject, in addition to the said means as needed, this invention can employ | adopt the technical means of providing a keep surface part over the full length of the both-sides edge part of a bag body. .

  Furthermore, in order to solve the above-described problems, the present invention can employ technical means that the keep surface portion is configured to be reattachable in addition to the above-described means as necessary.

Further, the present invention is a method for producing a peel-and-hold type container carrying bag having the above-described configuration,
While extruding the heat-softened thermoplastic resin material into a sheet form from the die of the extrusion molding machine,
From the die adjacent to the sheet part forming die, a thermoplastic resin material having a density lower than that of the thermoplastic resin material of the sheet part is extruded into a band having a predetermined width to form a band, and the sheet and the band While adhering
A pair of the sheet portions facing each other and superposed, and cooling while adhering the belt-like portions to each other, to form a keep surface portion adhered in close contact;
By adopting the technical means of forming an opening in the upper part and forming a bag body having a bottom surface in the lower part, the manufacturing method of the peel-and-hold type container carrying bag was completed.

The present invention relates to a bag body in which a pair of sheet portions made of a thermoplastic resin material face each other, an opening is formed in the upper portion, and a bottom surface is formed in the lower portion. By providing each side with a predetermined width keep surface portion made of a thermoplastic resin material having a density lower than that of the sheet portion, and attaching these keep surface portions to each other in close contact with each other,
When the container is inserted from the opening, the main body of the container is press-fitted between the keep face parts, and the adhesion of the keep face parts at the press-fitting site can be peeled off. A container can be held between them.

  Therefore, according to the peel-and-hold type container transport bag of the present invention, since it can be manufactured at a low cost with a simple structure and process, it is temporary from the store to the home etc. like transporting containers such as beverage cups. It is very suitable for the use of anything.

  In addition, since the boundary of the peeled keep surface portion can be abutted along the side surface of the container and supported on the surface, it can be surely fitted to the container and stably held.

  Furthermore, even if a complicated processing mechanism is not provided in the production line of the bag making machine, it can be easily manufactured simply by using a conventional extrusion molding machine (inflation molding machine), dramatically reducing the manufacturing cost. Can be reduced.

  Plastic films have a smooth surface, so when they are heated together and heated, a phenomenon occurs (the so-called “blocking phenomenon”) where they adhere to each other and cannot be easily peeled off. It is a troublesome thing to produce. However, in the present invention, this blocking phenomenon, which should be excluded as much as possible, can be created by skillfully using the blocking technique rather than the other hand. It can be said that it is big.

It is a front end view showing the structure of the container carrying bag of embodiment of this invention. It is a side view showing the structure of the container conveyance bag of embodiment of this invention. It is an upper surface enlarged view showing the structure of the container conveyance bag of embodiment of this invention. It is a front end view showing the use condition of the container carrying bag of an embodiment of the present invention. It is a front end view showing the use condition of the container carrying bag of an embodiment of the present invention. It is a front end view showing the use condition of the container carrying bag of an embodiment of the present invention. It is an upper surface end view showing the container accommodation state of the container conveyance bag of embodiment of this invention. It is a front end view showing the structure of the modification of the container carrying bag of embodiment of this invention. It is a front end view showing the structure of the modification of the container carrying bag of embodiment of this invention. It is a front end view showing the use condition of the modification of the container carrying bag of embodiment of this invention. It is a front end view showing the structure of the modification of the container carrying bag of embodiment of this invention. It is a front end view showing the use condition of the modification of the container carrying bag of embodiment of this invention. It is a perspective view showing the manufacturing process of the container conveyance bag of embodiment of this invention.

  An embodiment of the present invention will be described with reference to FIGS. In FIG. 1, what is indicated by reference numeral 1 is a bag, and what is indicated by reference numeral 2 is a keep surface portion.

<Construction of container carrying bag>
The configuration of the container carrying bag of the present invention will be described below. First, a pair of sheet portions 10 and 10 made of a thermoplastic resin material are faced and overlapped. In the present embodiment, polyolefin resin such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), nylon, and the like can be used as the resin material.

  And the bag body 1 has the opening part 11 in the upper part, and has the bottom face 12 in the lower part. As a method of superimposing the sheet portions 10 and 10, it is usually easy to form and overlap the bottom surface 12 so as to prevent bottoming.

  At this time, it is preferable to further fold the bottom surface 12 inward to form a gusset to create a bag bottom, while ensuring the capacity of the bag body, the bottom surface of the container that is stored is placed on the gusset and has stability. Increase. Further, a grip portion for holding the bag body 1 in the hand can be provided in the vicinity of the opening portion 11.

  And the keep surface part 2 of the predetermined width which consists of a thermoplastic resin material of lower density than the said sheet part 10 is provided in the inner surface of both the sheet parts 10 * 10 of this bag body 1, respectively. Specifically, high-density polyethylene (HDPE: usually softening temperature: about 120 ° C., melting point: about 140-160 ° C.) is adopted as the material for the sheet part 10, while low-density polyethylene (LDPE: normal) is used as the material for the keep surface part 2. , Softening temperature 80-90 ° C., melting point 110-120 ° C.).

  Further, these keep surface portions 2 face each other and adhere in close contact (see FIGS. 2 and 3). A method for manufacturing this adhesion portion will be described later. In the present embodiment, the keep surface portion 2 can be provided over the entire length of both side edges of the bag body. By doing so, the manufacturing process can be simplified, and the insertion position of the container C is not limited and the degree of freedom is high.

  With the above configuration, as shown in FIG. 4, when the container C is inserted from the opening 11, the main body of the container C is press-fitted between the keep surface portions 2, and this press-fitting site The adhesion between the keep surface portions can be peeled off (see FIG. 5).

  And a container can be hold | maintained between the keep surface parts peeled in this way (refer FIG. 6 and FIG. 7). At this time, the boundary of the peeled keep surface portion can be abutted along the side surface of the container and can be supported on the surface, so that it can be securely fitted to the container and stably held.

  In the present embodiment, the separation of the keep surface portions 2 is basically an irreversible action, but the keep surface portion 2 can be configured to be reattachable. In order to provide such a reattachment function, for example, a thermoplastic resin material having adhesiveness (tackiness) can be employed.

  Moreover, in this embodiment, as shown in FIG. 8, it can also comprise so that two (or more) containers can be accommodated by lengthening the full length of a keep surface part.

  Further, in the present embodiment, as shown in FIGS. 9 and 10, the keep surface portion 2 can be provided from the upper end to the lower end of the bag body. Similarly, in this case, when the container C is inserted from the opening 11, the main body of the container C is press-fitted between the keep surface parts 2, and the adhesion of the keep surface parts at the press-fitting site is peeled off. The container C can be held (see FIG. 10).

  Furthermore, as shown in FIGS. 11 and 12, a flat container C such as a lunch box or a tray can be accommodated and held. At this time, since the container C needs to maintain a horizontal posture, when the container C is held, the container C is first set so that the opening 11 and the bottom surface 12 of the bag body 1 are lateral (horizontal direction). Is inserted through the opening portion 11 while being kept horizontal, the bag body 1 is rotated by 90 degrees, whereby the adhesion between the keep surface portions can be peeled and held while maintaining the horizontal posture of the container C (FIG. 12). reference).

<Manufacturing method of container carrying bag>
Next, the manufacturing method of the container carrying bag of this invention is demonstrated below. In this embodiment, an ordinary extrusion molding machine can be used, but an inflation molding machine as shown in FIG. 13 is preferably used. The inflation molding method is suitable for producing a film-like molded body, and it is also easy to produce a sheet base material that can simultaneously produce two symmetrical bags.

  First, a thermoplastic resin material in a heat-softened state is extruded from a die of an extruder into a sheet shape to form a sheet portion.

  Then, a thermoplastic resin material 20 having a density lower than that of the thermoplastic resin material of the sheet portion is extruded from a die adjacent to the sheet portion forming die into a belt shape having a predetermined width, thereby forming the belt portion. These extrusion processes are performed at the same time, so-called “two-color extrusion”. At this time, since the respective dies (openings) from which the respective thermoplastic resin materials are extruded are adjacent to each other, both the resin materials naturally merge and the sheet portion and the belt-like portion adhere to each other.

  Next, the pair of sheet portions are faced and overlapped, and the belt-like portions are cooled while closely contacting each other to form a keep surface portion adhered in close contact. Specifically, the sheet is held in close contact with the nip roll during transfer.

  Thereafter, in accordance with a conventional method, an opening is formed in the upper part and a bag body having a bottom surface in the lower part is formed. Specifically, the bottom surface of the bag body 1 is formed by folding or bonding, and the fixing portion 13 is formed on the side edge of the bag body 1 by heat press or adhesion.

  Moreover, in the case of the sheet | seat base material produced by inflation molding, the sheet | seat center can be cut | disconnected and two symmetrical bag bodies can be produced simultaneously.

  The present invention is generally configured as described above. However, the present invention is not limited to the illustrated embodiment, and various modifications can be made within the description of “Claims”. The keep surface portion is not limited to being integrally molded and closely adhered, but may be a bonded or bonded material produced in a separate process. Of course, a manufacturing process other than inflation molding can be employed.

  Moreover, the holding | maintenance part of the container in the bag body 1 is not restricted to one or two, Three or more may be sufficient.

  Furthermore, the fixing portion 13 at the side edge portion of the bag body 1 is not limited to the one that is inclined so as to become narrower toward the bottom surface and heat-sealed in a tapered shape. The edge itself may be sealed.

  Furthermore, the outline shape of the bag body, the shape of the handle portion for carrying, and the like can be arbitrarily designed according to the decorative design, and any of these belongs to the technical scope of the present invention.

1 bag
10 Seat part
11 opening
12 Bottom
13 Adhering part 2 Keep face part
20 Low-density thermoplastic resin material 2a Keep surface part as it is attached 2b Keep surface part after peeling C Container D Die

Claims (4)

A pair of sheet portions made of a thermoplastic resin material face to overlap, an opening is formed at the top, and a bag having a bottom at the bottom,
The part of the inner surfaces of the sheet portion of the bag body than the seat portion and band-shaped keep surface portion of a predetermined width made of a thermoplastic resin material having a low density are provided respectively, and keep these strip The face parts face each other and adhere in close contact,
When the container is inserted from the opening, the main body of the container is press-fitted between the keep face parts, and the adhesion of the keep face parts at the press-fitting site is peelable,
And the boundary of the peeled keep surface part is abutted along the side surface of the container and is supported in a plane,
A peel-and-hold type container carrying bag characterized in that a container can be held between the peeled keep surface portions.   2. The peel-and-hold type container carrying bag according to claim 1, wherein the keep surface portion is provided over the entire length of both side edge portions of the bag body.   3. The peel-and-hold type container carrying bag according to claim 1, wherein the keep surface portion is configured to be reattachable. It is a manufacturing method of the exfoliation maintenance type container transportation bag according to claim 1,
While extruding the heat-softened thermoplastic resin material into a sheet form from the die of the extrusion molding machine,
From the die adjacent to the sheet part forming die, a thermoplastic resin material having a density lower than that of the thermoplastic resin material of the sheet part is extruded into a band having a predetermined width to form a band, and the sheet and the band While adhering
A pair of sheet portions facing each other and superposed, and cooling while adhering the band-shaped portions to each other, forming a keep surface portion adhered in a close contact state;
A method for producing a peel-and-hold type container carrying bag, wherein an opening is formed in an upper portion and a bag body having a bottom surface is formed in a lower portion.