TWI755806B - Pocket folding edge of pocket-type plastic data bag and its manufacturing method - Google Patents

Abstract

The present invention relates to a pocket folded edge of a pocket-type plastic data bag and a manufacturing method thereof, which mainly comprises a plastic data bag body. When folding the upper and lower pocket pieces, the present invention mainly lies in that the folded edges of the upper and lower pocket pieces are pressed by a plurality of spaced apart protruding parts, and a plurality of spaced apart parts are formed at the folded edges. The local relatively deep pressure zone. Using the above method and structure, since the plastic bag body is pressed with discontinuous protrusions, even if the pressure is applied to the weaker part of the plastic bag body, there will be no continuous and linear damage to the plastic bag body. The damage of the shape is at most "point-shaped" cracks (non-continuous, non-linear cracks), which can improve the shortcomings of the conventional process, which is prone to continuous and linear cracks at the flanges when pressing the flanges.

Description

Pocket folding edge of pocket-type plastic data bag and its manufacturing method

The present invention relates to a pocket-type plastic data bag for stationery, in particular to a pocket folding edge structure of a pocket-type plastic data bag that is convenient for writing and a manufacturing method thereof.

The first picture shows a pocket-type plastic data bag that is commonly used in the stationery industry in recent years and is convenient for paper clipping and writing. The pocket-type plastic data bag includes a plastic data bag body (1), the plastic data bag body (1). ) are respectively provided with upper pocket pieces (11) and lower pocket pieces (12) folded from the top edge and the bottom edge to face each other on the upper two sides and the lower two sides, except that the plastic data bag body (1) can accommodate articles or documents In addition, a writing sheet (13) can also be sandwiched between the upper pocket sheet (11) and the lower pocket sheet (12), so that the user can directly write on the writing sheet (13), which is beneficial for meetings or meetings during class. record or note. This kind of pocket-type plastic information bag that is convenient to provide paper-clip writing is conventional regardless of its structure or manufacturing method, so most of its manufacturing method and structure are not described in detail in this manual, and are explained first.

However, it can be observed from the second figure that in order to make the upper pocket piece (11A) and the lower pocket piece (12A) in a plastic bag body (1A), the upper pocket piece (11A) and the lower pocket piece (12A) must be ) The upper and lower parts of the plastic bag body (1A) are folded toward each other, but due to the lack of folding reference, it may be folded by experience, and a little carelessness may produce the upper pocket piece (11A shown in the second figure). ) and the length of the lower pocket piece (12A) are different, which affects the quality of the product.

Therefore, the prior art shown in the third figure is produced, that is, a plastic bag body (1B) is to be made into the upper and lower pockets (11B) The tool presses a folding edge (L1) that is easy to fold (there are four left and right and upper and lower parts, and the legend and explanation are only described by one position), and then create a more fragile part according to the mark of the folding edge (L1) for easy folding. Fold the folded edge, and then carry out subsequent processing. And use a disc-shaped tool on the plastic bag body (1B) to carry out Rolling and rolling to make the plastic material bag body form a continuous, linear and deep folded edge at the rolling place after being rolled by the disc has become a folded edge pressing technology occasionally used by plastic bag manufacturers. Those with ordinary knowledge in this technical field know that the thickness of the plastic bag body cannot be completely uniform. The pressure of the plastic bag body is not properly controlled, so that the plastic bag body produces a linear rupture (A) as shown in the fourth figure at the folds of the upper and lower pocket pieces (a linear rupture may further cause an overall rupture), and This situation is not allowed for the data bag structure. Since the current technology cannot control the thickness of the plastic material bag body to be completely uniform, if this method of using a disc to press the folded edge is used, the plastic material bag body is prone to unexpected occurrences at the folded edge during the production process. The dilemma of linear rupture, therefore, this method has not been widely adopted by the industry.

Therefore, in order to solve this problem, some stationery manufacturers choose to heat the disc tool, so that when the disc rolls through the thick or hard plastic bag, the material of the bag will be damaged due to the high temperature of the disc. "Hot-melt phenomenon" occurs, and the plastic bag body extends to both sides of the disc without breaking. However, heating the disc requires additional equipment, which not only greatly increases the cost of the equipment, but also for the plastic material bag making machine, which is originally small in size, how to install such a large heating device on the plastic material bag making machine. Another big problem.

In view of the problems of the prior art, the inventors believe that there should be an improved method and structure. Therefore, the finished product structure of the present invention is designed for a pocket flange structure of a pocket-type plastic data bag, including a plastic data bag body, and the plastic data bag body is provided with a top edge and a bottom on two upper sides and two lower sides respectively. The upper and lower pocket pieces are folded with the edges facing each other. The structural feature of the present invention is that the folded edges on the two sides of the upper and lower pocket pieces each form a plurality of spaced local relative deep-pressed areas, and the local relative deep-pressed areas It is slightly sunken, and its reverse side is relatively prominent.

The method of the present invention and the resulting structure are based on the fact that the flaps of the pocket pieces are pressed with a plurality of spaced apart protrusion devices, such as but not limited to rolling with a disc-shaped tool, And the circumference of the disc tool has a plurality of spaced protruding teeth so that the flange forms a local relative deep-pressed area with a plurality of spaced apart. With the above method and structure, in the process of applying pressure to the flange with a plurality of protruding parts with a plurality of intervals, there is no need to worry about the problem that the protruding parts with a plurality of intervals exert too much pressure on the plastic bag body. The pressed area will basically form a relatively deep pressure area, even if the rupture will only cause point rupture, and will not produce the dilemma of linear rupture, but can ensure the integrity of the flange.

In addition to the above-mentioned features of this case, in order to avoid the doubt that the present invention may be considered to be insufficient in progress compared with the dashed tear-off edge common in general stationery and paper utensils, the present inventors hereby Special note on this point:

1. First of all, as far as the position of the structure is concerned: the dashed tearable edge of a general stationery paper container (such as a stamp) is used in the place "to be torn". The purpose is to facilitate the user to follow the "dotted line". Tearable edge" to tear the stationery paper container apart. However, the position set in the present invention is the folded edge of the pocket of the main body of the pocket-type plastic data bag, not the position where the main purpose of tearing is desired. It breaks, and the place where the paper utensils and stationery want to tear is not at the "turning point of the bag body".

2. Motivation and effect of the second improvement of the invention: In the process of using a plurality of protruding parts with a plurality of spaced apart protruding parts to press the flange, the purpose of the invention is to "respond" to the situation that the thickness of the plastic material bag body varies, which is unavoidable. , and the line-shaped creation of the folded edge may lead to the problem of line-shaped rupture. Therefore, a plurality of protruding parts with a plurality of spaced apart are used to press the plastic bag body. The pressed area will basically form a relatively deep pressure area, even if the rupture will only cause point rupture, and will not produce the dilemma of linear rupture, but can ensure the integrity of the flange.

From the above, it can be seen that the present case and the conventional technology are obviously different in terms of the implementation position, implementation motivation and effect after implementation, and the "turning point" of the plastic bag body is pressed by means of a plurality of protruding parts with a plurality of intervals. The technology of producing a folded edge that will not break in a line is very different from the traditional requirement that the plastic bag body must have a solid "turning point". It can be seen that this case is not "obvious", nor is it familiar with this technical field. It can be "easy to complete", so I will first state it here for the purpose of communication.

(1): Plastic information bag body

(11): Upper pocket piece

(12): Lower pocket piece

(13): writing paper

(1A): Plastic information bag body

(11A): Upper pocket piece

(12A): Lower pocket piece

(1B): Plastic information bag body

(11B): Upper pocket piece

(12B): Lower pocket piece

(L1): Folded edge

(2): Plastic information bag body

(21): Upper pocket piece

(22): Lower pocket piece

(23): Local relative deep pressure area

(L2): Folded edge

(A): Linear rupture

The first figure is a schematic diagram of a pocket-type data bag of the prior art.

The second figure is a schematic diagram of the folding method and effect of the prior art pocket-type data bag.

The third figure is a schematic diagram of another prior art pocket-type data bag with a folding edge method.

The fourth picture is a schematic diagram of the problem in the third picture.

Fig. 5 is a three-dimensional schematic diagram of the folded edge of the pocket-type data bag of the present invention showing only one side lower pocket piece.

The sixth figure is a schematic diagram of the folding edge of the pocket-type data bag of the present invention showing only the upper and lower pocket pieces on one side.

Figure 7 is a schematic diagram showing a partial relative deep-pressed area of the pocket-type data bag of the present invention.

The eighth figure is a schematic diagram showing another effect of the present invention.

The structure, features and embodiments of the present invention will be described below with the aid of the drawings, so as to enable your examiners to have a further understanding of the present invention.

Please refer to the fifth and sixth figures, the finished product structure of the present invention relates to a pocket flange of a pocket-type plastic data bag, including a plastic data bag body (2), the plastic data bag body (2) being on the top The upper and lower pocket pieces (21) and (22) are respectively folded from the top edge and the bottom edge to face each other on the two sides and the lower two sides. As shown in the side example, the structural feature of the present invention is that the folded edges (L2) on the two sides (total four) of the upper and lower pocket pieces (21), (22) are each formed with a plurality of local relative deep pressings at intervals. Area (23) (the figure shows only one side of the lower pocket piece, the same for both sides of the upper pocket piece). Should In principle, each local relatively deep-pressed zone (23) is slightly depressed, and its opposite side is relatively prominent, and even if it penetrates, it is only a small number and will not form a continuous rupture.

It must be noted that the present invention only forms the local relative deep-pressed areas (23) with a plurality of intervals on the flanges (L2) of the upper and lower pocket pieces (21), (22) of the pocket-type plastic material bag, Not all of the data bag body turns. Perhaps your review committee thinks that such "serrated" and "spaced" structures have long been familiar to such stationery products. In order to avoid misunderstanding, please allow the applicant to emphasize in advance that the use of protruding parts with a plurality of spaced parts is used to prevent plastic deformation. The "turning point (folding edge)" of the data bag body is pressed to create a "folding edge" technology that will not break in a linear shape. , the structure of the plastic data bag at the "turning point (folding edge)" must be strong in order to have the function of storing and protecting documents. The folding edge manufacturing technology of the local relative deep-pressed area (23)” is applied to the turning point of the bag body (ie, the folding edge) of the pocket-type plastic data bag, because in terms of structure, the upper and lower side pockets of the pocket-type plastic data bag are It only has the function of holding a single document (so that the part of the single document exposed on the outside of the upper and lower pocket pieces is easy to write), and there is no need to accommodate and protect a large number of documents, so the folding edges of the upper and lower pockets only need to have a complete structure. , and does not need to be structurally "sturdy" like other turning points of the data bag body. Therefore, the "dotted tearable edge" structure may be familiar to stationery products, but it is the first to be used in "the turning point (folding edge) of the upper and lower side pockets of the pocket-type plastic data bag". The purpose is to It is desirable to maintain the structural integrity of the folded edge (L2) without the occurrence of linear ruptures, and the traditional "dotted tearable edge" is applied to the tearing of paper (such as common postage stamps), the purpose is to hope that it can be easily Tear, the purpose and structure of the two are completely different. The main motivation and expected effect of the present invention is to improve the process of creating pocket pieces in such pocket-type plastic data bags. As mentioned above, due to the different thickness of the material of the plastic data bag body (2), some segments may be fragile and cause "linear rupture" or even lead to the occurrence of defective products that further expand the rupture. Furthermore, the meaning of dots is The adjacent edges of the local relatively deep pressure zone (23) can form the "blocking point" of the continuous rupture of the next local relatively deep pressure zone (23). , the point-like adjacent edges have the "physical meaning" of blocking continuous rupture, which makes the present invention have a more synergistic effect.

At the same time, the manufacturing method of the pocket folding edge of the pocket-type plastic data bag of the present invention is described, which is that the folding edge of each pocket piece is a predetermined folding of the plastic data bag body (2) by means of a plurality of spaced apart protruding parts. Pressing the edge part, such as but not limited to rolling and rolling with a disc-shaped tool, and the circumference of the disc tool has a plurality of spaced protruding teeth so that the flange forms a local relative deep pressing area with a plurality of spaced intervals ( twenty three).

Of course, the manufacturing method of the present invention is not limited to rolling and rolling with a disc-shaped tool, and can also be pressed at one time by a straight-sheet-shaped cutter, and the straight-sheet-shaped cutter also has a plurality of spaced convex teeth. Using the above method, due to the "point-like" pressure, it is not easy to cause continuous and linear damage to the folded edge of the plastic data bag body (2), even if the plastic data bag body (2) is relatively weak by rolling. This localized relatively deep pressure zone (23) is fractured through, but at most "point-like" fractures (discontinuous, non-linear fractures).

Furthermore, although easy tearing is not the main motivation of the present invention (and should be emphasized), as shown in Figure 8, when the upper and lower pocket pieces (21), (22) are sandwiched with writing paper (13), If the size of the writing paper (13) is slightly larger, the structure of the present invention is also conducive to tearing the folded edge (L2) of the upper pocket piece (21) to form an opening, so that the writing paper (13) ) oversized part can pass through the opening of the torn flange (L2), and can produce a derivative use effect with better size suitability.

The present invention can improve the above-mentioned shortcomings of the prior art, and also does not need to spend high cost of heating equipment, and can avoid the plastic data bag body (2) due to the uneven material thickness of the plastic data bag body (2) when the flange is pressed. 2) In the case of linear ruptures at the folded edge, that is, use a plurality of protruding parts at intervals to press the preset folded edge of the plastic bag body (2) to avoid the occurrence of continuity. Linear rupture.

To sum up, the present invention is indeed in line with industrial applicability, and has not been seen in publications or publicly used before the application, nor has it been known to the public, and it is non-obvious and complies with the requirements for patentability, and a patent application can be filed in accordance with the law . However, the above-mentioned statements are the preferred embodiments of the present invention in the industry, and all the equivalent changes made according to the scope of the patent application of the present invention are all within the scope of the subject matter of this case.

(2): Plastic information bag body

(21): Upper pocket piece

(22): Lower pocket piece

(23): Local relative deep pressure area

(L2): Folded edge

Claims (2)

A pocket folding method for a pocket-type plastic data bag, comprising a plastic data bag body. The plastic data bag body is provided with upper and lower pocket pieces folded from the top edge and the bottom edge to face each other on the upper two sides and the lower two sides respectively. , which is characterized in that the folded edges of the upper and lower pocket pieces are pressed by a plurality of spaced protruding parts to form a local relative deep-pressed area with a plurality of spaced intervals. A pocket folded edge of a pocket-type plastic data bag comprises a plastic data bag body, the plastic data bag body is provided with upper and lower pocket pieces folded from the top edge and the bottom edge to face each other on the upper two sides and the lower two sides respectively, It is characterized in that the flanges of the upper and lower pocket pieces are formed with a plurality of partially spaced relatively deep-pressed areas.

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