JP2521132Y2 - Product packaging bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a plastic film product packaging bag.

[Prior Art] Conventionally, as a product packaging bag having an opening with a lid film, a bag body portion in which a thin plastic film is placed on the front side and a thick plastic sheet is placed on the back side and the side edges thereof are fused Commodity packaging bags with headers were known.

As shown in FIG. 7, in these product packaging bags, the adhesive A is applied to the opening, and the release paper B is pasted on the opening, and the product is stored from the opening, and then the release paper is attached. It is a structure in which the film is peeled off and the film is adhered to the edge of the opening.

In this way, the operation of peeling the release paper after putting the product in is troublesome, and in the process of fundamentally adhering the film, the shape of the bag collapses due to the storage of the product, so the adhesion position of the lid film is disturbed. However, it was difficult to make a uniform shape and the appearance was bad.

[Problems to be Solved by the Invention] An object of the present invention is to provide a product packaging bag that can be automatically packaged.

[Means for Solving the Problems] In the present invention, the tip of the lid film in the opening is pre-bonded, and the product is stored from the attachment portion of the lid film or another insertion introduction port, and then the The object of the present invention was achieved by heat-sealing the insertion inlet, and the present invention was completed.

That is, the present invention comprises (1) a bag portion formed by fusing side edges of a thick plastic sheet and a thin plastic film, and a header portion of the thick plastic sheet, and an opening portion is provided under the header portion. In the packaging bag provided with, the lid film is installed from the upper edge of the opening of the bag body portion to the header portion, and the fusion preventing agent is applied to the side edge portion of the lid film, and then the bag body portion and the header portion. The side edges are fused at the same time as the side edges are fused and semi-fused to these side edges, and further, the lower portion of the lid film is bonded to the upper edge of the bag body portion with an adhesive, Further, a product packaging bag is characterized in that a product insertion introducing port is formed between an upper part of the lid film and a header part. (2) The product packaging bag according to item (1), wherein a thin film is laminated on a thick plastic sheet of the bag body portion and / or the header portion. (3) The product packaging bag according to any one of (1) and (2), wherein the thin plastic film of the opening and the bag body portion are both on the same side of the packaging bag.
(4) The product packaging bag according to any one of (1) and (2), wherein the thick plastic sheet of the opening portion and the thick plastic sheet portion of the bag body portion are on the same side of the packaging body. (5) The product packaging bag according to item (4), wherein the lower edge of the thick plastic sheet in the header portion and the upper edge of the thick plastic sheet in the bag body overlap each other. (6)
A thick plastic sheet and a bag body part formed by fusing the side edges of the thin plastic film and a header part in which the thin plastic film is laminated on the thick plastic sheet, and an opening is formed below the bag body part. In the provided packaging bag, the upper edge of the thin plastic film forming the surface of the bag body is placed on or under the lower edge of the header section, and the side edges are fused to form the lower opening. Is a thin film extending from the edge of the opening, and this is bent to the back surface of a thick plastic sheet and fixed with an adhesive, and between the side edge of the extended film and the thick plastic sheet, A product packaging bag, characterized by being coated with an anti-fusion agent and being semi-fused. (7) It consists of a thick plastic sheet and a bag part formed by fusing the side edges of a thin plastic film, and a header part in which a thin plastic film is laminated on a thick plastic sheet. In a packaging bag provided with an opening, the upper edge of a thick plastic sheet that constitutes the back surface of the bag body is placed on or under the lower edge of the header section, and the side edge of the bag body is Fusing, the lower opening extends a thin film from the edge of the opening, folds it on the back of a thick plastic sheet and fixes it with an adhesive, and the side edge of the extended film and the thick film. Between the plastic sheets,
A product packaging bag, characterized by being coated with an anti-fusion agent and being semi-fused. (8) A product packaging bag according to any one of claims (6) to (7), wherein a thin plastic film is laminated on a thick plastic sheet forming a bag body.

Thermoplastic resins are suitable for the plastic film and plastic sheet of the bag body used in the bag body of the present invention, such as polyethylene, polypropylene,
Resins such as polystyrene, nylon, polyester and polyvinyl chloride can be used.

In the product packaging bag of the present invention, the bag body portion is configured by a combination of a thin plastic film and a thick plastic sheet.

The thick plastic sheet of the bag body helps to strengthen the waist of the bag body. Since the thin plastic film is transparent, it serves to make the stored products look better to the buyer.

Therefore, the side with the thin plastic film is usually the front side of the product packaging bag.

This thin plastic film is often extended by stacking it on a thick plastic sheet up to the header part and the back of the bag field, and these plastic films are printed and used as product description and advertising space. Have contributed.

As the anti-fusing agent used in the present invention, any agent can be used as long as it can prevent fusion of the lid film when the lid film is fused, and there is no limitation. A method such as sandwiching an oil-based material or a release paper can be used.

The product packaging bag of the present invention is, for example, as shown in the drawings, by applying an adhesive and an anti-fusion agent at predetermined positions on a continuous continuous plastic sheet or a continuous continuous plastic film and continuously feeding it out. It is possible to efficiently manufacture by combining the bags so as to have a desired cross-sectional structure as shown, and fusing each bag width.

[Embodiment] The structure and operation of the bag of the present invention will be described in more detail with reference to the drawings.

The bag body shown in FIGS. 1 and 2 is a bag body according to an embodiment of the present invention. A thin front plastic film 1 and a thick plastic sheet back plastic film 2 have a bottom portion 11 and both side edge portions 10. A header formed by fusing and forming an opening 4 at an upper portion of the bag body, and a thin plastic film 5 laminated on a thick plastic sheet 6 extending from the opening 4 on the header. Section is provided.

A lid film 3 having a width equal to the length of the opening is laminated from the upper edge of the front film 1 onto the laminated film 5 of the header portion, and the lid film 3 is fixed to the upper edge of the front film 1 by an adhesive layer 7. Has been done. Further, the lid film 3 has its side edges fused at the same time in the side edge fusion step of forming the bag body portion and adhered in a semi-fused state. Therefore, if it is peeled off with a finger, the side edge portion of the semi-fusion is easily peeled off. The side edges of the lid film are semi-fused due to the presence of the anti-fusing agent application portion 8 applied before the fusing step.

In the product packaging bag of FIGS. 1 and 2, the thin film of the bag body and the opening 4 are on the same side, and the temporary insertion introduction port 9 is open upward.

When the product packaging bag of this embodiment is used, both ends of the opening are narrowed, the front film, the lid film, and the plastic sheet of the header portion are curved, and the opening 4 is opened in a large bow shape, and the insertion introduction port is inserted. After 9, the product is automatically stored in the bag. After the storage, the upper edge of the lid film 3 and the laminated film 5 of the header portion are heat-sealed by a heat roller or a high frequency seal.

The consumer who obtains the bag containing the product in this way removes the lid film 3 from the adhesive layer 7 by holding the lower edge 12 of the lid film 3 and takes out the product from the opening 4, and then the lid film 3 Can be crimped onto the adhesive layer 7 and closed again.

In another embodiment of the structure shown in the sectional view of FIG. 3, the thin front film 1 is continuously and integrally extended to the laminated film 1'on the back surface of the thick plastic sheet 2 on the back surface of the bag body. Further, the upper part is continuously extended to the front laminated film 5'and the back laminated film 5 of the thick plastic sheet 6 of the header portion. The thick plastic sheet 2 in the bag portion is not continuous with the thick plastic sheet 6 in the header portion. The edges of the two plastic sheets form the edges of the opening 4.
When the right and left side edges of the are pushed inward, the opening is curved and opens greatly. In this case, since the opening edge is formed by the edge of a thick plastic sheet, a firm and strong insertion opening can be formed, which facilitates automatic filling of products.

As described above, the effect of forming the opening edge with the thick sheet is further improved by stacking the thick plastic sheet 2 of the bag body and the thick plastic sheet 6 of the header portion, as in the embodiment of FIG. It becomes noticeable and very easy for automatic filling.

That is, in this embodiment, the opening formed by pinching both ends has a cylindrical shape due to the overlapping portion, and not only the shape of the opening is fixed but also the shape of the curve of the opening is changed. It is transmitted to the plastic sheets of the header portion and the bag body portion, and even slender products can be smoothly stored.

In these examples, the lid film 3 and the laminated film 5 are heat-sealed to fix the lid film to the header portion after storing the products.

The embodiment shown in FIG. 5 is an embodiment in which the opening 4 is provided below.

The thin front film 1 is fused with the thick back plastic sheet 2 at the side edges 10 to form a bag body portion.

At the time of this fusion, the upper edge of the front film 1 is installed so as to overlap the lower edge of the laminated film 5 of the header portion.

A lid film 3 is continuously extended from the lower edge of the front film 1 and is bent to the back surface of the thick plastic sheet 2 on the back surface. Then, it is fixed to the back surface by the adhesive 7. Further, the side edges of the lid film 3 are semi-fused when the side edges are fused to form the bag body portion. This semi-fusing is the same as the previous example in that the anti-fusing agent is applied.

The thick plastic sheet 2 of the bag portion and the plastic sheet 6 of the header portion are continuous to receive the product coming from the insertion introduction port 9 and facilitate automatic filling.

After storing the product, the upper edge of the front film 1 and the lower edge of the laminated film 5 of the header portion are heat-sealed to hermetically package the product.

The stored product can be taken out from the lower opening by peeling off the adhesive 7.

In the embodiment shown in FIG. 6, the header plastic sheet 6 is used.
And the thick plastic sheets 2 of the bag body are overlapped, and the overlapped portion is used as the insertion introduction port 9.

The thin front film 1 extends upward and is continuous with the laminated film 5 of the plastic sheet 6 in the header portion.

The lower part is continuous with the lid film 3 and is bent and adhered to the plastic sheet 2 as in the previous embodiment.

As described above, when the plastic sheets are pushed so as to reduce the width of the overlapped portion, the opening is opened firmly and the shape is stable for the above reason, so that automatic filling is facilitated.

After filling the products, if the overlapping parts of the plastic sheets are fused and sealed by ultrasonic sealing etc., the header and bag body will be joined by one thick plastic sheet, which is a very strong product packaging bag. become.

 The removal of the product from below is the same as in the previous embodiment.

[Effect of the Invention] The product packaging bag of the present invention is a product packaging bag having an opening with a lid, and the effect of facilitating the filling of a product, which has conventionally been troublesome, is a great advantage in the field of the product packaging bag. become.

In addition, the application of the anti-fusion agent facilitates the production of the product packaging bag of the present invention and has a great effect.

[Brief description of drawings]

FIG. 1 is a plan view of a product packaging bag according to an embodiment of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a cross-sectional view showing the structure of a product packaging bag according to another embodiment of the present invention. FIG. 4 is a sectional view showing a structure of a product packaging bag according to another embodiment of the present invention, and FIG. 5 is a sectional view showing a structure of a product packaging bag according to another embodiment of the present invention. FIG. 6 is a sectional view showing the structure of a product packaging bag according to another embodiment of the present invention, and FIG. 7 is a sectional view showing the structure of a conventional product packaging bag having an opening with a lid. Reference numerals in the figure are 1; bag body surface film, 2; bag body thick sheet, 3; lid film, 4; opening, 5; header laminated film, 6; header thick sheet, 7; adhesive Layer, 8; anti-fusion agent application part, 9; insertion inlet, 10; side edge fusion part, 11; bottom part, 1
2; The lower edge of the lid film.

Claims (8)

(57) [Scope of utility model registration request] 1. A package comprising a thick plastic sheet and a bag body formed by fusing the side edges of a thin plastic film and a header portion of the thick plastic sheet, and an opening portion provided under the header portion. In the bag, a lid film is installed from the upper edge of the bag body portion opening to the header portion,
After applying the anti-fusion agent to the side edge portion of the lid film, the side edge portions of the bag body portion and the header portion are melt-fused at the same time as the side edge portions and are semi-fused to these side edges. The lower portion of the lid film is adhered to the upper edge of the opening of the bag body with an adhesive, and a product insertion inlet is formed between the upper portion of the lid film and the header portion. And product packaging bag. 2. The product packaging bag according to claim 1, wherein a thin film is laminated on a thick plastic sheet of the bag body portion and / or the header portion. 3. The product packaging bag according to claim 1 or 2, wherein the thin plastic film of the opening portion and the bag body portion are both on the same side of the packaging bag. 4. The product packaging bag according to claim 1 or 2, wherein the thick plastic sheets of the opening and the bag are both on the same side of the package. 5. The product packaging bag according to claim 4, wherein the lower edge of the thick plastic sheet in the header portion and the upper edge of the thick plastic sheet in the bag body overlap each other. 6. A bag body part formed by fusing the side edges of a thick plastic sheet and a thin plastic film, and a header part in which a thin plastic film is laminated on a thick plastic sheet. In a packaging bag having an opening below, the upper edge of a thin plastic film forming the surface of the bag body is placed on or under the lower edge of the header section, and the side edges are fused. In the lower opening, a thin film is extended from the edge of the opening, and the thin film is bent on the back surface of a thick plastic sheet and fixed with an adhesive. The side edge of the extended film and the thick plastic sheet are then fixed. A product packaging bag, characterized in that an anti-fusing agent is applied between the two parts and is semi-fused. 7. A bag portion formed by fusing the side edges of a thick plastic sheet and a thin plastic film, and a header portion formed by laminating a thin plastic film on a thick plastic sheet. In a packaging bag with an opening provided below, the upper edge of a thick plastic sheet that constitutes the back surface of the bag body is placed on or under the lower edge of the header section, and the side of the bag body section The edges are fused and the lower opening extends a thin film from the edge of the opening, and this is bent to the back surface of a thick plastic sheet and fixed with an adhesive, and the side edge of the extended film portion is fixed. A product packaging bag, characterized in that an anti-fusion agent is applied between the thick plastic sheets and is semi-fused. 8. The product packaging bag according to claim 6 or 7, wherein a thin plastic film is laminated on a thick plastic sheet forming the bag body.