KR20120127063A

KR20120127063A - Edge Frame for Use in Vinyl Bag and Method for Making Vinyl Bag Using the Same

Info

Publication number: KR20120127063A
Application number: KR1020110045292A
Authority: KR
Inventors: 박노현
Original assignee: 주식회사 대림공업
Priority date: 2011-05-13
Filing date: 2011-05-13
Publication date: 2012-11-21

Abstract

The present invention is a vinyl that can manufacture a plastic bag by combining the intermediate sheet, the side sheet and the border frame using an assembly jig that can be manufactured inexpensively and simply without making an expensive mold even when changing the size and shape of the plastic bag It relates to a frame for producing a bag and a plastic bag manufacturing method using the same.
The present invention comprises a first step of combining the both ends of the intermediate sheet of the band shape to form an annular intermediate sheet; A second step of wrapping the assembly jig by folding the upper and lower ends of the intermediate sheet formed in an annular shape to the outside; After the first and second rim frame is assembled to the assembly jig so that the ring portion is located inside the assembly jig and the flat portion surrounds the top and bottom of the intermediate sheet surrounding the assembly jig, respectively. A third step of positioning the first and second side sheets respectively on both sides of the second frame; And installed between the upper and lower molds with the first and second side sheets are positioned on both sides of the first and second rim frame and press while applying a high frequency between the upper and lower molds, And a fourth step of separating the bag assembly located at the inner side of the assembly jig and separating the bag assembly from the assembly jig to pull out the bag product.

Description

Edge Frame for Use in Vinyl Bag and Method for Making Vinyl Bag Using the Same}

The present invention relates to a plastic frame manufacturing frame and a plastic bag manufacturing method using the same, and more particularly, to fabricate a jig for assembly that can be manufactured inexpensively and simply without making expensive molds when changing the size and shape of the plastic bag. By manufacturing a vinyl bag by combining the intermediate sheet, the side sheet and the frame using the frame, the assembly frame is easy to manufacture and the frame frame for producing a plastic bag and a plastic bag manufacturing method using the same.

In general, a bag is an item that can be carried in a wide range of items, such as small suitcases that can be carried by an individual, to suitcases that are large in size, and can be classified into various types, uses, and materials. Can be.

For example, a bag may be a purse or purse that fits in a purse or purse, depending on the purpose of use, a rectangular shoulder bag with a handle on each side, or a travel bag or backpack. It can be divided into, and depending on the material can be divided into natural leather bags, artificial fiber bags, synthetic fiber bags and vinyl bags.

In particular, plastic bags are able to store small and simple items for a limited time, and have been applied to various uses due to their easier and cheaper price to manufacture.

Conventional plastic bag disclosed in the Utility Model No. 232017 is a high frequency fusion of the edge frame on both ends in the longitudinal direction of the intermediate sheet with a zipper, and connected to each other through a connecting pin to the edge frame to complete the annular shape to the high-frequency side sheets on both sides Fusion is achieved by flipping the whole around the zipper to achieve the desired shape.

Such a plastic bag has a complicated manufacturing process because it is difficult to support high frequency fusion while supporting a desired shape by using a structure that depends only on a connecting pin to a frame for maintaining a storage space when the intermediate sheet and the side sheet are fused together. In addition, such a plastic bag is not only difficult to maintain the frame of the product because the connecting pin is easily separated, but also can greatly reduce the quality of the product.

In addition, as proposed in Korean Utility Model Registration No. 232017, a conventional plastic bag has a technique of fusion bonding a pair of side sheets to an intermediate sheet after first fusion bonding member consisting of an annular ring piece and an adhesive piece to the side sheet. Is disclosed.

However, according to the conventional plastic bag proposed in Korean Utility Model No. 232017, as the size and shape of the bag change, a new expensive mold for manufacturing a coupling member composed of an annular ring piece and an adhesive piece by injection molding is newly renewed. There is a disadvantage to be produced, and as a result there is a disadvantage that can not quickly produce a new product according to the needs of the customer.

Accordingly, an object of the present invention is to produce a plastic bag by combining the intermediate sheet, the side sheet and the border frame using only the assembly jig that can be manufactured inexpensively and simply without making an expensive mold even when changing the size and shape of the plastic bag. The present invention provides an edge frame for manufacturing a vinyl bag and a manufacturing method of a vinyl bag using the same, which can facilitate the assembly process and reduce the manufacturing cost.

Another object of the present invention is to provide a rim frame for manufacturing a plastic bag excellent in assembling of the bag as the shape of the rim frame is bent so that the flat portion can be matched to the assembly jig to improve the assembling with the assembly jig. have.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention which are not mentioned can be understood by the following description, and will be more clearly understood by the embodiments of the present invention.

In order to achieve the above object, the present invention comprises a first step of forming an annular intermediate sheet by combining both ends of the intermediate sheet formed of a band shape that influences the size of the storage space; A second step of arranging the intermediate sheet formed in an annular shape inside the assembly jig, and folding the upper and lower ends of the intermediate sheet to the outside to surround the assembly jig; After the first and second rim frame is assembled to the assembly jig so that the ring portion is located inside the assembly jig and the flat portion surrounds the top and bottom of the intermediate sheet surrounding the assembly jig, respectively. A third step of positioning the first and second side sheets respectively on both sides of the second frame; And installing the intermediate sheet between the upper and lower molds while pressing the first and second side sheets on both sides of the first and second edge frames and applying a high frequency between the upper and lower molds. Separate the parts located outside the assembly jig with the bag assembly located inside the assembly jig with respect to the first and second edge frames and the first and second side sheets, and then separate the bag assembly from the assembly jig and It provides a method for producing a plastic bag comprising; a fourth step of withdrawing the product.

Each of the first and second edge frames may include a planar portion coupled to side surfaces of the intermediate sheet and the first and second side sheets, respectively; And a ring portion integrally formed along a flat portion to form a frame of the plastic bag, wherein the flat portion is folded to cover the portion wrapped around the assembly jig by folding the top and bottom of the intermediate sheet and bent to form a U-shape. The ring portion is provided with a ring hole, it is preferable that the connecting pin is inserted when the ends of the first and second rim frame abut each other.

In addition, the assembly jig is located outside the assembly jig with respect to the intermediate sheet, the first and second edge frame and the first and second side sheet by pressing between the upper mold and the lower mold during high frequency welding. It is preferable that the upper and lower ends have a peak shape so as to separate the part from the bag assembly located inside the assembly jig.

Furthermore, when the edge frame is assembled between the intermediate sheet and the side sheet to form a high frequency fusion, the bent portion of the U-shape may be cut to remove a portion.

In addition, the mutually contacting portions of the intermediate sheet, the first and second edge frames, and the first and second side sheets are fused according to high frequency application.

Furthermore, since the shape of the assembly jig is made corresponding to the shape of the intermediate sheet of the plastic bag to be manufactured, it is produced at low cost.

In the vinyl sheet of any one of the intermediate sheet and the side sheet, a zipper is preferably attached to the seat surface to open and close the storage space.

The bag product taken out separately from the assembly jig is subjected to a flipping step in a later step.

According to another feature of the invention, the frame frame used in the manufacture of a plastic bag having an annular intermediate sheet and a pair of side sheets fused to both sides of the intermediate sheet is coupled to the side of the intermediate sheet and the side sheet Flat part; And a ring portion integrally formed along a flat portion to form a frame of the plastic bag, wherein the flat portion has a U shape that is bent to be assembled while covering the annular assembly jig, and the edge frame is formed of an intermediate sheet and side surfaces. When the high frequency fusion is assembled between the sheets is characterized in that the bent portion of the U-shaped is cut to remove a portion.

The ring portion is provided with a ring hole, it is preferable that the connecting pin is inserted when the ends of the rim frame abut each other.

As described above, the present invention does not produce an expensive mold even when the size and shape of the plastic bag is changed, and newly manufactures only a cheap jig for assembling, and then combines the intermediate sheet, the side sheet, and the border frame to produce the vinyl. By manufacturing the bag, the assembly process is easy and the manufacturing cost can be reduced.

In addition, in the present invention, as the shape of the rim frame is bent so that the flat portion can be matched to the assembly jig to improve the assembly with the assembly jig excellent in the assembly of the bag.

1 is a perspective view showing a finished product produced by the manufacturing method of a plastic bag according to an embodiment of the present invention,
Figures 2a and 2b is a view showing a border frame used in the manufacture of a plastic bag in Figure 1,
3 is a flow chart for a plastic bag manufacturing method according to an embodiment of the present invention,
4A to 4D are diagrams for describing each step of FIG. 3.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It can be easily carried out.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a finished product produced by the manufacturing method of a plastic bag according to an embodiment of the present invention, Figures 2a and 2b is a view showing a frame used in the manufacture of a plastic bag in FIG.

As shown in Figure 1, the plastic bag 100 of the present invention, for example, to form a storage space that can easily store a predetermined article, such as bathing articles therein, any of transparent, translucent and opaque vinyl Made of one.

Here, vinyl is a generic term for vinyl compounds, and generically refers to vinyl resins obtained by polymerization of vinyl chloride or the like. Such vinyl resin can be obtained by addition polymerization (vinyl polymerization) of a raw material (vinyl monomer) having a vinyl group (CH ₂ = CH-), and polyethylene, polyvinyl chloride, and polyvinyl acetate Various materials can be used, such as acetate resin. As the material of the bag, other polymer resins capable of high frequency fusion in addition to vinyl resins can be used.

Vinyl is a material that is widely used as a fabric for manufacturing the plastic bag 100 because it is water resistant and can be easily bonded using a high frequency fusion method.

As such, the plastic bag 100 constitutes the intermediate sheet 110 and the first and second side sheets 120a and 120b of a vinyl having flexible characteristics, and at least accommodated to store a plurality of articles. The first and second border frames 130a and 130b may be attached to the joining portions (ie, corner portions) of the intermediate sheet 110 and the first and second side sheets 120a and 120b to maintain the space of the space. Place together and combine. At this time, the intermediate sheet 110, the first and second side sheets (120a, 120b), the first and second border frame (130a, 130b) is simply joined by a high frequency fusion method to firmly connect the adhesive portion between each vinyl sheet. do.

The vinyl sheet of any one of the intermediate sheet 110 and the first and second side sheets 120a and 120b may be formed with a zipper 111 to open and close the storage space. The case where the zipper 111 is formed in 110 is shown.

In general, the zipper 110 is composed of a slider (111a), the elements (111b) and a tape (tape, 111c), the tape (111c) is attached to the vinyl sheet in a high frequency fusion method. Here it is described as limited to the zipper 111 to open and close the storage space formed in the plastic bag 100, it can be manufactured by the opening and closing method (for example, snap button, etc.) of the various storage spaces It can be easily understood by.

On the other hand, the first and second border frame (130a, 130b) of the plastic bag 100 to maintain the storage space in the coupling portion of the intermediate sheet 110, the first and second side sheets (120a, 120b) Located at both corners, the flat portion 131 is partially coupled with the intermediate sheet 110, the first and second side sheets 120a and 120b, and is formed along one side of the flat portion 131 to provide a plastic bag ( Ring part 132 forming a frame (ie, a frame) of 100.

Here, the flat portion 131 is integrally connected to a predetermined width in contact with the ring portion 132, the "U bent so as to be folded while surrounding the portion wrapped around the assembly jig 140 by folding the upper and lower ends of the intermediate sheet (110). "The shape is made. Ring portion 132 is provided with a ring hole (A), the ring hole (A) is coupled to the annular intermediate sheet 110, when both ends are in contact with each other and integrated, connecting pins to maintain the mutually coupled state Both ends of 133 are inserted into the ring holes A opposite each other by 1/2.

On the other hand, the edge frame (130a, 130b) is cut off most of the flat portion 131 during assembly / fabrication of the plastic bag 100, and only the ring portion 132 is left to substantially perform a frame (frame) function do.

Hereinafter, a method of manufacturing the plastic bag 100 as described above will be described in detail.

3 is a flowchart illustrating a plastic bag manufacturing method according to an embodiment of the present invention. 4A to 4D are explanatory views for explaining an assembly method for each step of FIG. 3.

As described above, the plastic bag 100 is a single intermediate sheet 110, a pair of first and second side sheets 120a, 120b are coupled to both sides of the intermediate sheet 110 to form a finished product Is produced. At this time, the plastic bag 100 is assembled / manufactured in a state in which the inner surface is exposed to the outside, and then reversed to obtain the desired plastic bag finished product.

Hereinafter, a method of manufacturing the plastic bag 100 according to an embodiment of the present invention will be described in detail.

First, the intermediate sheet 110 of the plastic bag 100 is produced (S101). Since the intermediate sheet 110 is a portion that determines the size of the storage space formed inside the plastic bag 100, the intermediate sheet 110 is formed in a band shape having horizontal and vertical lengths according to the size of the storage space required by the user. In this case, the zipper 111 for opening and closing of the storage space formed in the inside of the plastic bag 100 is attached to the intermediate sheet 110 by, for example, high frequency fusion (see FIG. 4A).

Thereafter, the intermediate sheet 110 is connected to both ends by a high frequency fusion method to form an annular shape. At this time, the annular intermediate sheet 110 is disposed so that the slider 111a of the zipper 111 is exposed inward.

Next, the upper and lower ends of the annular intermediate sheet 110 are bent from the inner surface of the assembly jig 140 so as to have a predetermined shape, and are bent to surround the outer surface (S102). That is, the annular intermediate sheet 110 shows the shape of the assembly jig 140 as it is coupled to the assembly jig 140. Here, the assembly jig 140 has a rectangular structure for convenience of description, but is not limited thereto. The jig 140 may be formed in various shapes such as polygon, circle, oval, and heart shape.

At this time, the intermediate sheet 110 is formed wider than the width of the assembly jig 140, and after the intermediate sheet 110 is coupled to the inside of the assembly jig 140, the upper end 110a of the intermediate sheet 110 Since the lower end 110b is folded outside the assembly jig 140 to surround the assembly jig 140, the assembly jig 140 and the assembly jig 140 can be maintained (see FIG. 4B). As such, the shape of the assembly jig 140 determines the shape of the plastic bag 100.

Next, as shown in FIG. 4C, the first and second edge frames 130a and 130b are assembled in a portion in which the upper end 110a and the lower end 110b of the intermediate sheet 110 wrap the assembly jig 140. (S103). At this time, the first and second rim frame (130a, 130b) is the "U" shaped bent portion of the flat portion 131, the upper end 110a and the lower end (110b) of the intermediate sheet 110 is folded jig 140 for assembly ) Is inserted into the wrapped portion, the ring portion 132 is coupled to be located inside the jig 140. In this case, the first and second edge frames 130a and 130b are fused together with the first and second side sheets 120a and 120b at once, or after being fused in advance to the intermediate sheet 110, the first and second side sheets. It may be fused again with the 120a and 120b.

Next, as shown in FIG. 4D, the first and second side sheets 120a and 120b are assembled to the upper and lower portions of the first and second edge frames 130a and 130b, respectively (S104). Here, the first and second side sheets 120a and 120b have a portion forming the side surface of the plastic bag 100 and an excess portion B.

Thereafter, the first and second side sheets 120a and 120b are interposed between the intermediate sheet 110 and the first and second edge frames 130a and 130b and the upper and lower molds 150a and 150b for high frequency fusion. When a high frequency is applied between the upper and lower molds 150a and 150b while being pressed in the arranged state, the first and second side sheets 120a and 120b may be formed of the intermediate sheet 110 and the first and second edge frames. High frequency fusion is performed with the 130a and 130b (S105).

In this case, when the high frequency is applied between the upper and lower molds (150a, 150b) and at the same time pressurized, the intermediate sheet 110, the first because the upper and lower ends of the assembly jig 140 is formed in a peak shape, respectively And the high frequency fusion welding at the point where the assembly jig 140 of the second frame 130a and 130b and the first and second side sheets 120a and 120b and the upper and lower molds 150a and 150b are in contact with each other. At the same time the cutting is made.

As a result, the intermediate sheet 110 located inside the assembly jig 140, the ring portions 132 of the first and second edge frames 130a and 130b, and the first and second side sheets 120a and 120b. The bag assembly includes a top portion 110a and a bottom portion 110b of the intermediate sheet 110 surrounding the assembly jig 140, and a flat portion 131 and a first portion of the first and second edge frames 130a and 130b. And being separated from the excess portion B of the second side sheets 120a and 120b, and are separated from the assembly jig 140.

After that, the bag assembly is separated from the assembly jig 140, and when the inside and the outside of the operation is made (S106), as shown in Figure 1, the ring portion (1) of the first and second border frame (130a, 130b) 132 and the desired plastic bag 100 with the slider 111a of the zipper 111 exposed to the outside are obtained.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

The present invention relates to a plastic frame manufacturing frame frame and a vinyl bag manufacturing method using the same, without changing the size and shape of the plastic bag, an intermediate sheet using an assembly jig that can be manufactured easily and cheaply, without expensive mold It is applied to make a plastic bag by combining the side sheet and the border frame.

100: plastic bag 110: middle sheet
110a: top 110b: bottom
111: zipper 120a, 120b: side sheet
130a, 130b: border frame 131: flat part
132: ring portion 133: connecting pin
140: assembly jig 150a: upper mold
150b: lower mold A: ring hole
B: surplus portion

Claims

A first step of forming an annular intermediate sheet by combining both ends of the intermediate sheet having a band shape that influences the size of the storage space;
A second step of arranging the intermediate sheet formed in an annular shape inside the assembly jig, and folding the upper and lower ends of the intermediate sheet to the outside to surround the assembly jig;
After the first and second rim frame is assembled to the assembly jig so that the ring portion is located inside the assembly jig and the flat portion surrounds the top and bottom of the intermediate sheet surrounding the assembly jig, respectively. A third step of positioning the first and second side sheets respectively on both sides of the second frame; And
The intermediate sheet and the first sheet are installed between the upper and lower molds while the first and second side sheets are positioned on both sides of the first and second edge frames, and are pressed while applying a high frequency between the upper and lower molds. And separating the bag assembly located outside the assembly jig with respect to the second rim frame and the first and second side sheets from the bag assembly located inside the assembly jig, and then separating the bag assembly from the assembly jig to produce the bag product. A fourth step of withdrawing;
Plastic bag manufacturing method comprising a.

The method of claim 1,
The first and second border frame, respectively,
A planar portion coupled to side surfaces of the intermediate sheet and the first and second side sheets; And
Consists of a ring portion integrally formed along the flat portion to form a frame of the plastic bag,
The flat part has a U shape that is bent to be assembled while covering the part surrounding the assembly jig by folding the upper and lower ends of the intermediate sheet, and the ring part has a ring hole to provide the first and second edge frames. Method of manufacturing a plastic bag, characterized in that the connecting pin is inserted when the ends of the contact abut together.

The method of claim 1,
Method of manufacturing a plastic bag, characterized in that the inter-contact portion of the intermediate sheet, the first and second border frame and the first and second side sheet is fused at high frequency.

The method of claim 1,
The shape of the assembly jig is made corresponding to the shape of the intermediate sheet of the plastic bag produced, characterized in that the plastic bag manufacturing method.

5. The method of claim 4,
The assembly jig is a portion located outside the assembly jig with respect to the intermediate sheet, the first and second edge frame and the first and second side sheets by pressing between the upper mold and the lower mold during high frequency welding. A top and bottom end of the plastic bag manufacturing method, characterized in that the peak shape so as to separate from the bag assembly located inside the assembly jig.

The method of claim 1,
When the edge frame is assembled between the intermediate sheet and the side sheet is made of high frequency fusion is a bent portion of the U-shaped plastic bag, characterized in that the part is removed by cutting.

In the frame of the frame used in the manufacture of a plastic bag having an annular intermediate sheet and a pair of side sheets fused to both sides of the intermediate sheet,
A planar portion coupled to side surfaces of the intermediate sheet and side sheets; And
Consists of a ring portion integrally formed along the flat portion to form a frame of the plastic bag,
The planar portion is made of a U-shaped bent to be assembled while covering the annular assembly jig, when the edge frame is assembled between the intermediate sheet and the side sheet is a U-shaped bent portion is cut when high frequency fusion is achieved Border frame for manufacturing a plastic bag, characterized in that part is removed.

The method of claim 7, wherein
The ring part is provided with a ring hole rim frame for manufacturing a plastic bag, characterized in that the connecting pin is inserted when the ends of the rim frame abut each other.