KR101884187B1 - Apparatus and method for manufacturing vinyl bag - Google Patents

Abstract

An apparatus for manufacturing a plastic bag of the present invention comprises: a transfer unit which includes one or more rollers and is constructed to transfer a vinyl material by rotating one or more rollers; an adhesive applying unit which is constructed to apply adhesive onto one area of the vinyl material transferred by the transfer unit; a first processing unit which is constructed to attach an adhesion band to an adhesive-applied area of the vinyl material, and fold both ends of the vinyl material to which the adhesion band is not attached; a dividing unit which is constructed to divide the vinyl material by cutting the adhesion band-attached area of the vinyl material; and a second processing unit which is constructed to process the divided vinyl materials into a bag shape by heating and cutting the divided vinyl materials. According to the present invention, the apparatus has advantages of improving a working speed, removing a half folding and adhesive applying process to improve defective rate of a finished product, and improving adhesive strength of the plastic bag by integrating a side sealing process with an existing half folding and adhesive applying process of applying adhesive onto the vinyl material while half-folding the vinyl material, and enabling two plastic bags to be processed at one time through one process.

Description

[0001] APPARATUS AND METHOD FOR MANUFACTURING VINYL BAG [0002]

More particularly, the present invention relates to an apparatus and a method for manufacturing a vinyl bag, and more particularly, to a method and apparatus for manufacturing a vinyl bag, To a new plastic bag manufacturing process.

In daily life, a thin plastic bag, usually called a vinyl envelope, is often used to store food or beverage products or a large number of objects having various sizes. For example, in a department store, a supermarket, a grocery store, a market, etc., many objects are packed in plastic bags when they are packed.

In order to manufacture a plastic bag, conventionally, a half-folding foot process of applying an adhesive to a fabric while folding a vinyl fabric in half, a side sealing process of processing a side of the folded vinyl fabric by melting with heat, A processing step was required. However, since the processing of the vinyl fabric is complicated in the process of the half-shoe sole, there is a problem that defects are generated at a high rate in an automated process.

Korean Patent Publication No. 1995-0024875

According to an aspect of the present invention, there is provided an apparatus for manufacturing a vinyl envelope according to a conventional method, which has a high defect rate due to a half-folding step of applying a glue to a fabric while folding a vinyl fabric in half, It is possible to provide an apparatus and a method for manufacturing a plastic bag which can improve the efficiency and the operation speed and improve the quality such as the adhesive strength of the plastic bag manufactured.

A vinyl envelope manufacturing apparatus according to an embodiment includes a conveying unit including at least one roller and configured to convey the vinyl fabric by rotation of the at least one roller; An adhesive applying unit configured to apply an adhesive to one area of the vinyl fabric conveyed by the conveying unit; A first processing unit configured to attach an adhesive band to the area of the vinyl fabric to which the adhesive is applied and to fold both ends of the vinyl fabric to which the adhesive band is not attached; A dividing section configured to divide the vinyl fabric by cutting the area of the vinyl fabric to which the adhesive band is attached; And a second processing unit configured to heat and cut the divided vinyl fabric into an envelope shape.

In one embodiment, the adhesive strip is attached to the center in the width direction of the vinyl fabric. At this time, the divider may be configured to cut the vinyl fabric into two vinyl fabrics having the same size. The first processing unit may be configured to fold the vinyl fabric so that both ends of the vinyl fabric are positioned at a predetermined distance from the adhesive band.

In one embodiment, the first processing portion comprises: an attachment portion configured to attach the adhesive strip to the vinyl fabric; And a folding portion configured to fold both ends of the vinyl fabric to which the adhesive band is not attached.

In one embodiment, the first processing section further includes a finishing section configured to heat or press both ends of the vinyl fabric folded by the folding section.

The apparatus for manufacturing a plastic bag according to an embodiment further includes a cutting unit for cutting the vinyl fabric coated with the adhesive to have a predetermined width and supplying the cut to the first processing unit.

In one embodiment, the divider is configured to cut the vinyl fabric along the length of the vinyl fabric.

In one embodiment, the second processing section includes a heating sealer for cutting the vinyl fabric every preset length, and for melt-bonding the cut portion.

A method of manufacturing a plastic bag according to an embodiment includes the steps of applying an adhesive to one area of the vinyl fabric while transferring the vinyl fabric by rotation of one or more rollers; Attaching an adhesive strip to the area of the vinyl fabric where the adhesive is applied, while transferring the vinyl fabric by rotation of the one or more rollers; Folding both ends of the vinyl fabric to which the adhesive strip is not attached; Dividing the vinyl fabric by cutting the area of the vinyl fabric where the adhesive band is attached; And processing the split vinyl fabric by heating and cutting into an envelope shape.

In one embodiment, the adhesive strip is attached to the center in the width direction of the vinyl fabric. At this time, the dividing step may include cutting the vinyl fabric into two vinyl fabrics having the same size. The step of folding both ends of the vinyl fabric may include folding the vinyl fabric so that both ends of the vinyl fabric are positioned at a predetermined distance from the adhesive band.

The method of manufacturing a plastic bag according to an embodiment further comprises heating or pressing both ends of the folded vinyl fabric before dividing the vinyl fabric.

In the method of manufacturing a plastic bag according to an embodiment, the step of dividing the vinyl fabric includes a step of melting and bonding the cut portion while cutting the vinyl fabric every predetermined length by a heating sealer.

According to one aspect of the present invention, there is provided an apparatus and a method for manufacturing a vinyl envelope, comprising: a half-folding step of applying a glue to a fabric while folding the vinyl fabric in half; Side sealing process is performed in an integrated manner, so that there is an advantage that the working efficiency can be improved as compared with the conventional one.

Further, according to the apparatus and method for manufacturing a plastic bag according to an aspect of the present invention, since the processing corresponding to two lines of plastic bags is performed in one step, the working speed can be improved by more than two times as compared with the conventional one, There is an advantage that the efficiency in the printing process before the fabric processing can be improved.

Further, according to the apparatus and method for manufacturing a plastic bag according to an aspect of the present invention, it is possible to apply the adhesive at a slower speed than the conventional semi-folding foot process, so that the adhesive strength of the plastic bag can be improved, There is an advantage in that the defective rate of the finished product can be improved as the conventional process of disposing of the semiautomatic foot is eliminated.

1 is a block diagram of an apparatus for manufacturing a plastic bag according to an embodiment.
2 is a conceptual view of an adhesive applying portion of a plastic bag manufacturing apparatus according to an embodiment.
3 is a conceptual view of a cut-out portion of the apparatus for manufacturing a plastic bag according to an embodiment.
4 is a conceptual view of an attaching portion of a first processed portion of a plastic bag manufacturing apparatus according to an embodiment.
5 is a conceptual view of a folded portion of the first processed portion of the apparatus for producing a plastic bag according to an embodiment.
6 is a conceptual view of an end treatment portion of a first processed portion of a plastic bag manufacturing apparatus according to an embodiment.
7 is a conceptual view of a divided portion of a plastic bag manufacturing apparatus according to an embodiment.
8 is a conceptual view of a second processed portion of the apparatus for producing a plastic bag according to an embodiment.

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

Where reference in the specification to "above " another part, it may be directly on the other part or be accompanied by another part therebetween. In contrast, when a section is referred to as being "directly above" another section, no other section is involved.

Herein, the terms first, second and third, etc. are used to describe various parts, components, regions, layers and / or sections, but are not limited thereto. These terms are only used to distinguish any moiety, element, region, layer or section from another moiety, moiety, region, layer or section. Thus, a first portion, component, region, layer or section described below may be referred to as a second portion, component, region, layer or section without departing from the scope of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified and that the presence or absence of other features, regions, integers, steps, operations, elements, and / It does not exclude addition.

The term " below ", "above ", and the like, which denote relative space in this specification, can be used to more easily describe the relationship to other parts of a part shown in the drawings. These terms are intended to include other meanings or acts of the apparatus in use, as well as intended meanings in the drawings. For example, when inverting a device in the figures, certain parts that are described as being "below" other parts are described as being "above " other parts. Thus, an exemplary term "below" includes both up and down directions. The device can be rotated by 90 degrees or rotated at different angles, and terms indicating relative space are interpreted accordingly.

Unless defined otherwise, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

1 is a block diagram of a vinyl bag manufacturing apparatus according to an embodiment.

1, the apparatus for manufacturing a plastic bag according to the present embodiment includes a transfer part 10, an adhesive application part 20, a first processing part 40, a division part 50, (60). In one embodiment, the apparatus for producing a plastic bag further comprises a cutter 30.

The transfer unit 30 includes one or more rollers 110 and 120 and is used to transfer the vinyl fabric 100 for manufacturing a plastic bag using the rollers 120 and 130 to each process step do. In this specification, a plastic bag refers to a thin plastic bag referred to as a plastic bag, and the vinyl fabric for manufacturing the plastic bag may be a stretchable film made of synthetic resin or the like.

The vinyl fabric 100 may be stored on the fabric roll 130 or the like when not in use and may be pulled flat by the tension applied by the rotation of one or more rollers 120 and 130 during the process, Can be transferred to the process step. The processes described herein below may all be performed in a state in which the vinyl fabric 100 is transported using one or more rollers, so that the transport of the vinyl fabric 100 will not be described below in duplicate.

The adhesive application portion 20 is configured to apply an adhesive to one area of the vinyl fabric 100 as a first step for processing the vinyl fabric 100 into an envelope form.

2 is a conceptual diagram of an adhesive applying unit 20 of an apparatus for producing a plastic bag according to an embodiment.

2, the adhesive application portion 20 includes a container 210 containing an adhesive and a solvent, and a roller 230 for applying the adhesive in the container 210 to the vinyl fabric 100 . At this time, the vinyl fabric 100 may be wound and transferred to another roller 220.

The engraved roller 230 may be formed with an engraved surface so that only the portion to be coated with the adhesive can contact the vinyl fabric 100. When the rollers 230 are carried on the adhesive in the container 210 and brought into contact with the vinyl fabric 100, an adhesive is applied to the vinyl fabric 100. The contact between the roller 230 and the vinyl fabric 100 may be performed by moving one or both of the rollers 220 and 230. Alternatively, the rollers 230 may be configured such that the lower surface thereof is partially contained in the adhesive in the container 210 and the vinyl fabric 100 is transported through the upper surface thereof to the vinyl fabric 100 by the roller 230, May be applied.

The constitution of the adhesive applying section 20 shown in Fig. 2 is conceptual for explaining the operation performed in the adhesive applying section 20, and it is necessary that the adhesive applying section 20 of the apparatus for producing a plastic bag according to the embodiments actually has The shape, size, or number of members to be used in the present invention. This is the same for the explanation of the other process steps below.

Referring again to FIG. 1, the cutting unit 30 can remove unnecessary portions from the vinyl fabric 100 coated with adhesive in one region, and supply only the remaining portion to the first hollow unit 40. For example, the unnecessary portion may be a printing region necessary for a printing process for brand printing in addition to the actual shape portion of the plastic bag.

3 is a conceptual diagram of a cutter 30 of a plastic bag manufacturing apparatus according to an embodiment.

3, the cutting unit 30 includes a blade 300. When the blade 300 is fed to a part of the vinyl fabric 100 while the vinyl fabric 100 is being conveyed by the roller 310, So that unnecessary portions can be separated from other portions. The vinyl fabric used for making the envelope after cutting can be conveyed by the rollers 330 and the rollers 320 and 330 can be arranged so that the cut portions are wound on the separate rollers 320. Since the portion wound around the roller 320 is a portion not necessary for the subsequent process, if it exceeds a predetermined size, it can be taken out of the roller 320 and treated as a grip.

Referring again to FIG. 1, the first processing unit 40 attaches an adhesive band to a region where the adhesive agent is applied on the vinyl fabric 100, and folds both ends of the vinyl fabric 100 to form an envelope circular As shown in Fig.

The first processing portion 40 includes an attachment portion 41 for attaching an adhesive band to the vinyl fabric 100, a folding portion 42 for folding both ends of the vinyl fabric 100, And an end treatment section 43 for processing the both ends so as not to be heated and / or pressurized.

4 is a conceptual diagram of an attaching portion 41 of the first processing portion 40 of the apparatus for manufacturing a plastic bag according to an embodiment.

4, the attaching portion 41 is provided with a roller 415 to which the vinyl fabric 100 is fed and an adhesive band 400 for attaching the adhesive to the area where the adhesive of the vinyl fabric 100 is applied Roller 410 as shown in FIG. The adhesive band 400 is held on the rollers 410 and is released from the rollers 410 and adhered to the vinyl fabric 100. The adhesive band 400 is a part for implementing a sealing function in a plastic bag to be finally manufactured. When the envelope is used, the adhesive band 400 may be removed and the envelope may be closed using an adhesive applied to the area.

To this end, the adhesive band 400 may be attached to the vinyl fabric 100 using an adhesive applied to the vinyl fabric 100, and may be pulled with a hand or the like, if necessary, to separate the vinyl fabric 100 from the vinyl fabric 100 It can be made of easy material. The adhesive strip 400 may also have a different color than the vinyl fabric 100 to visually indicate that the adhesive strip 400 can be removed in use.

5 is a conceptual view of a folding portion 42 of the first processing portion 40 of the apparatus for producing a plastic bag according to an embodiment.

5, the folding section 42 includes a press bundle 420 and a pair of tilting press plates 421 and 422. [ The press bundle 420 is disposed so as to press the central portion of the vinyl fabric 100 supplied to the folding section 42 and the pair of the oblique press plates 421 and 422 are arranged to press the vinyl fabric 100, The end portions of the sloped press plates 421 and 422 are arranged to be curled under the respective sloped press plates 421 and 422.

At this time, each of the warp push plates 421 and 422 extends in an inclined direction with respect to the conveying direction of the vinyl fabric 100. That is, each of the inclined pressing plates 421 and 422 is disposed such that the interval between the pair of inclined pressing plates 421 and 422 decreases as the vinyl fabric 100 is conveyed. As a result, both ends of the vinyl fabric 100 curled down under the tilt press plates 421 and 422 pass through the tilt press plates 421 and 422 and form a folded portion toward the center of the vinyl fabric 100, The length d of the folded portion is determined by the angle formed by each of the inclined pressing plates 421 and 422 with respect to the conveying direction of the vinyl fabric 100. [ The vinyl fabric is folded using the inclined pressing plates 421 and 422 such that both ends of the vinyl fabric 100 face the adhesive band 400 or are spaced apart from the adhesive band 400 by a predetermined distance. .

6 is a conceptual view of an end treatment section 43 of the first processing section 40 of the apparatus for manufacturing a plastic bag according to an embodiment.

6, the end treatment unit 43 includes a pair of rollers 431 and 432 facing each other, and the ends of the vinyl fabric 100 folded by the folding unit 42 are wound around the rollers 431, 432 and pressurized and / or heated by the rollers 431, 432 to prevent the folded portion from being lifted. Although the rollers 431 and 432 are shown only at one end of the vinyl fabric 100 in the figure, it will be easily understood that the same process can be performed for the other end.

Referring again to FIG. 1, the envelope circular shape in which both ends of the vinyl fabric 100 are folded by the first processing unit 40 is supplied to the dividing section 50. The dividing portion 50 divides the vinyl fabric 100 into two portions by cutting the vinyl fabric 100 around the region where the adhesive band 400 is attached. Unlike conventional vinyl bag manufacturing processes in which plastic bags are processed one line at a time, according to the present embodiment, the vinyl fabric 100 corresponding to a two-line plastic bag is used, So that the work speed can be improved. In addition, since the fabric corresponding to two lines of plastic bags is processed at one time, the efficiency in the printing process can also be improved.

7 is a conceptual view of a divided portion of a plastic bag manufacturing apparatus according to an embodiment.

7, the dividing section 50 includes a blade 500 and is provided with a blade 500 at the area where the adhesive strip 400 is formed in the vinyl fabric 100 conveyed by the one or more rollers 510, 500 so as to divide the vinyl fabric 100 into two portions centered on the contact portion of the blade 500. At this time, the adhesive band 400 is positioned at the center with respect to the width direction of the vinyl fabric 100, and the edge 500 of the adhesive band 400 is cut in the longitudinal direction of the vinyl fabric 100 And can be brought into contact with the center of the adhesive band (400). As a result, the vinyl fabric 100 can be divided into two envelope circles having the same size as each other.

Referring back to FIG. 1, the envelope circle divided into two lines by the dividing section 50 is supplied to the second processing section 60. The second processing portion 60 is configured to heat and cut the vinyl fabric 100 divided into two lines into an envelope shape.

8 is a conceptual view of a second processing unit 60 of the apparatus for manufacturing a plastic bag according to an embodiment.

8, the second processing unit 60 includes a heating sealer 600 to which heat is applied. When the vinyl fabric 100 is cut by a certain length using the heating sealer 600, the cut portions are instantaneously melted and bonded by heating, and the side faces of the envelopes are formed. That is, after passing through the heating sealer 600, the vinyl fabric has a shape of a plastic bag 100 'having an adhesive band 40 attached to one end thereof. Each time the vinyl fabric 100 is cut, 100 ') is completed. The finished plastic bag 100 'can be dispensed at a predetermined number of times.

9 is a flowchart of a method of manufacturing a plastic bag according to an embodiment.

Referring to FIG. 9, the vinyl fabric may be transferred by first rotating one or more rollers (S1). The vinyl fabric is stored in a roll and is fed to the other process steps while being pulled flat by the rollers in use. Since the steps described below are performed in a state in which the vinyl fabric is transported as described above, the point at which the vinyl fabric is transported by the rollers will not be described below in duplicate.

For the manufacture of a plastic bag, an adhesive may be first applied to one area of the vinyl fabric (S2). For example, an adhesive may be applied to a predetermined portion corresponding to the center of the width with reference to the width direction of the vinyl fabric.

In one embodiment, unnecessary portions of the vinyl fabric are cut off after application of the adhesive (S3). For example, the unnecessary portion may be a printing area required in a process of brand printing or the like.

Next, an adhesive band can be attached to the adhesive region of the vinyl fabric adhesive (S4). The adhesive strip is attached to the vinyl fabric so that when the plastic bag is used, it is removed and the envelope can be closed by using the adhesive of the fabric.

Next, both end portions of the vinyl fabric to which the adhesive band is not attached can be folded to form an envelope (S5). At this time, the vinyl fabric can be folded so that both ends of the vinyl fabric face the adhesive band or come to a position spaced apart from the adhesive band by a predetermined distance.

Next, the folded both end portions of the vinyl fabric can be heated and / or pressed (S6). This is to prevent the folded end portions of the vinyl fabric from flooding.

Next, the vinyl fabric can be cut along the adhesive band attachment region (S7). By this cutting process, an envelope circle corresponding to two lines of plastic bags is obtained from one vinyl fabric. Accordingly, the processing speed can be improved as compared with processing a single line in a single process as in the conventional method.

Next, the plastic bag is completed by cutting the vinyl fabric with the heating sealer and joining the sides of the bag (S8). The heating sealer is made into an envelope shape by cutting the vinyl fabric to a predetermined length and melting and transferring the transmitting portion.

While the invention has been shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. However, it should be understood that such modifications are within the technical scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: vinyl fabric 10: transferring part
20: adhesive applying unit 30:
40: first machining portion 41:
42: a folding part 43:
50: split part 60: second machining part

Claims (13)

A conveying portion including at least one roller, the conveying portion configured to convey the vinyl fabric by rotation of the at least one roller;
An adhesive applying unit configured to apply an adhesive to one area of the vinyl fabric conveyed by the conveying unit;
A first processing unit configured to attach an adhesive band to the area of the vinyl fabric to which the adhesive is applied and to fold both ends of the vinyl fabric to which the adhesive band is not attached;
A dividing section configured to divide the vinyl fabric by cutting the area of the vinyl fabric to which the adhesive band is attached;
A second processing unit configured to process the divided vinyl fabrics into an envelope shape by heating and cutting; And
And a cutting unit that cuts the vinyl fabric coated with the adhesive to have a predetermined width and feeds the vinyl fabric to the first processing unit,
Wherein the adhesive band is attached to the center in the width direction of the vinyl fabric using the adhesive and has a color different from that of the vinyl fabric,
The adhesive-
A container containing the adhesive and the solvent; And
And a first roller for applying the adhesive in the container to the vinyl fabric,
The first roller
Wherein the lower surface of the first roller is contained in the adhesive in the container and the vinyl fabric is transported through the upper surface of the first roller,
Wherein the first roller is formed with an engraved angle for contacting only the vinyl fabric with the portion to be coated with the adhesive so that the first roller contacts the vinyl fabric while the vinyl fabric moves through the upper surface of the first roller, Thereby applying the adhesive to the vinyl fabric,
The cutting unit
A blade for contacting the vinyl fabric coated with the adhesive to separate the vinyl fabric;
A second roller configured to wind the vinyl fabric trimmed to have the predetermined width by the blade; And
And a third roller configured to wind the remaining portion of the vinyl fabric except the portion wound on the second roller for destruction processing.
A plastic bag manufacturing apparatus. The method according to claim 1,
Wherein the dividing portion is configured to cut the vinyl fabric into two vinyl fabrics having the same size. The method according to claim 1,
Wherein the first processing portion is configured to fold the vinyl fabric so that both ends of the vinyl fabric are positioned at a predetermined distance from the adhesive band. The method according to claim 1,
Wherein the first processing unit includes:
An attachment portion configured to attach the adhesive strip to the vinyl fabric; And
And a folding portion configured to fold both ends of the vinyl fabric to which the adhesive band is not attached. 5. The method of claim 4,
And a finishing unit configured to heat or press both ends of the vinyl fabric folded by the folding unit. delete The method according to claim 1,
Wherein the dividing portion is configured to cut the vinyl fabric along a longitudinal direction of the vinyl fabric. The method according to claim 1,
Wherein the second processing unit includes a heating sealer for cutting the vinyl fabric every predetermined length and for melting and joining the cut portions. Applying an adhesive to one area of the vinyl fabric while transferring the vinyl fabric by rotation of the one or more rollers;
Attaching an adhesive strip to the area of the vinyl fabric where the adhesive is applied, while transferring the vinyl fabric by rotation of the one or more rollers;
Folding both ends of the vinyl fabric to which the adhesive strip is not attached;
Dividing the vinyl fabric by cutting the area of the vinyl fabric where the adhesive band is attached; And
And heating and cutting the divided vinyl fabric into an envelope shape,
Wherein the adhesive band is attached to the center in the width direction of the vinyl fabric using an adhesive and has a color different from that of the vinyl fabric,
Wherein applying the adhesive comprises:
Disposing a container and a first roller containing the adhesive and the solvent so that the lower surface of the first roller is contained in the adhesive in the container, wherein only the portion to be coated with the adhesive is applied to the vinyl fabric Forming an engraved surface for contact;
Transferring the vinyl fabric through an upper surface of the first roller;
Applying the adhesive to the vinyl fabric by contacting the vinyl roll with the first roller while the vinyl fabric is moving through the top surface of the first roller;
Cutting the vinyl fabric coated with the adhesive to a predetermined width using a blade for contacting the vinyl fabric and separating the vinyl fabric;
Causing the vinyl fabric cut to have the predetermined width to be wound on the second roller for attachment of the adhesive strip;
So that the remaining portion of the vinyl fabric other than the portion wound around the second roller is wound on the third roller for destruction processing.
A method of manufacturing a plastic bag. 10. The method of claim 9,
Wherein the dividing step includes cutting the vinyl fabric into two vinyl fabrics having the same size. 10. The method of claim 9,
Wherein the step of folding both ends of the vinyl fabric comprises folding the vinyl fabric so that both ends of the vinyl fabric are at a predetermined distance from the adhesive strip. 10. The method of claim 9,
Further comprising heating or pressing both ends of the folded vinyl fabric before dividing the vinyl fabric. 10. The method of claim 9,
Wherein dividing the vinyl fabric includes a step of fusing the cut portions while cutting the vinyl fabric by a predetermined length by a heating sealer.

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