JPH0619480Y2 - Storage bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a storage bag.

[Prior art]

Conventionally, in order to store clothes and the like, as shown in FIG. 5, the front side sheet 1 is made of a resin film having a smooth surface, and the back side sheet 2 is made of a resin fiber non-woven fabric rich in breathability, flexibility and hygroscopicity. What has been done is proposed. Then, in order to open the opening of the storage bag by a hot melt bonding method or the like, a lip piece 3 having a smooth surface is welded and protruded on the upper portion of the back sheet 2 of the non-woven fabric, and the inner surface of the lip piece 3 is protruded. Adhesive material 4 that can be adhered and peeled off is provided in a strip shape between both side ends of the lip piece 3, and release paper 5 is adhered on the adhesive material 4. This is because the surface of the non-woven fabric is rough, so it is difficult to attach the adhesive material 4 to the surface, and even if the adhesive material 4 is provided on the front sheet 1 side made of a resin film,
This is because the back sheet 2 made of the non-woven fabric is fluffed or fluffed by opening and closing several times with an adhesive material and its adhesive strength is poor.

[Problems to be solved by the device]

In the conventional storage bag, the lip piece 3 must be formed separately from the back sheet 2 and prepared, and the lip piece 3 must be aligned and adhered to the upper end of the back sheet 2, which makes the production cumbersome and expensive. There is. Further, since the surface to be adhered is on the side of the smooth front sheet 1, the lip piece 3 must be attached to the side of the back sheet 2, so that the lip piece 3 is folded back to the front side of the bag when the mouth is closed. There is also a problem that the appearance from the table becomes worse.

Therefore, the present invention proposes a storage bag using a nonwoven fabric, which can be repeatedly opened and closed by hot melt adhesion or the like without using a separately molded lip piece as in the conventional case, and solves the above problems. That is the purpose.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the present invention provides a base piece having an upwardly extending lip portion for folding and closing, and an attachment piece for forming a bag, one or both of which is made of a non-woven fabric. In the non-woven fabric, a portion having a smooth surface is formed by applying pressure with a heating member or an ultrasonic welding member to the attached portion or the adhered portion of the adhesive material. Further, the second invention is that the front side sheet (6) is formed of a resin film having a smooth surface, the lip portion (6a) is integrally extended on the upper side of the film, and the back side sheet (7) is formed of a non-woven fabric, An adhesive material (8) and release paper (9) are provided on the back surface of the lip portion (6a),
The back side sheet (7) is located at a portion to which the adhesive material (8) is adhered, and the back side sheet (7) is pressed by a heating member or an ultrasonic welding member to form a smooth surface to be adhered (7a). It is characterized by being formed. Further, the third invention is that the front sheet (10) and the back sheet (7) are made of non-woven fabric, and the lip portion (10a) is integrally extended and formed on the upper portion of the front sheet (10), and the lip portion (10a) is formed. In, provided with an attachment portion (10b) that is smoothed by pressing it with a heating member or an ultrasonic welding member, the attachment portion (10b) is provided with an adhesive material (8) and release paper (9),
The back side sheet (10) is located at a portion to which the adhesive material (8) is bonded, and the back side sheet (7) is pressed by a heating member or an ultrasonic welding member to form a smooth surface to be adhered (7a). It is characterized by being formed.

〔Example〕

A first embodiment of the present invention shown in FIGS. 1 and 2 will be described.

Reference numeral 6 is a base piece, which is formed of a resin film made of polypropylene, vinylon, nylon or the like and having a smooth surface. The base piece 6 is made of a transparent film or a film as required for printing. Reference numeral 7 denotes an attached piece, which is formed of a non-woven fabric made of a thermoplastic chemical fiber or a natural fiber containing a chemical fiber. The peripheral edges of the base piece 6 and the attached piece 7 excluding the upper end are adhesively sealed to each other by ultrasonic bonding or the like to form a bag having an open upper end. Also, the base piece 6
The upper end of the base piece 6 extends above the upper end of the attachment piece 7, and the lip 6a is integrally formed with the base piece 6 at the upper part of the base piece 6. On the back surface of the lip portion 6a, an adhesive material 8 is attached in a strip shape along the upper edge of the lip portion 6a. The adhesive material 8
The release paper 9 is adhered to the surface of the. The adhesive material 8 and the release paper 9 are provided before bag formation. When the lip portion 6a is folded back to the outer surface of the attachment piece 7, the attached piece 7 has a strip-shaped portion along the upper edge of the attachment piece 7 at the position where the adhesive material 8 abuts. Is formed in.

The adhered portion 7a is formed by pressing a heating roller or an ultrasonic welding roller onto the adhered portion 7a so that the outer surface of the non-woven fabric is smooth and close to the surface of the synthetic resin film.

When using this embodiment, the release paper 9 is peeled off, the lip portion 6a is folded back to the outside of the attachment piece 7, and the adhesive material 8 is adhered to the adhered portion 7a and closed.

Therefore, in this embodiment, by using the base piece 6 on the front side, the lip portion 6a is folded back to the back side of the bag at the time of closing, so that the lip portion is exposed on the front surface side of the bag and spoils the appearance. There is nothing.

FIG. 3 shows a second embodiment of the present invention, in which the base piece 10
Is also formed of the same non-woven fabric as the attachment piece 7 in the above-mentioned embodiment.

In this embodiment, the attachment portion 10b of the adhesive material 8 in the lip portion 10a of the base piece 10 is formed into a smooth surface by the same molding as that of the adhered portion 7a in the above embodiment, and the back surface of the attachment portion 10b is formed. The adhesive material 8 and the release paper 9 are provided.

According to the present embodiment, it is possible to form a storage bag that can be opened and closed with an adhesive material by using a non-woven fabric having air permeability for the base piece 10 and the attached piece 7 which are the front and back sheets.

FIG. 4 shows a third embodiment of the present invention in which a non-woven fabric is used for the base piece 11 which is the back side sheet and a resin film having a smooth surface is used for the attachment piece 12 which is the front side sheet. The base piece 11 is formed in the same manner as the base piece 10 of the second embodiment, and has the same lip portion 11a, the attachment portion 11b of the adhesive material,
An adhesive material 8 and a release paper 9 are provided.

[Effect of device]

According to the present invention, the attached portion or the adhered portion of the adhesive material in the non-woven fabric is pressed and smoothed by the heating member or the ultrasonic welding member, so that even if the attached portion side of the adhesive material is the non-woven fabric, it is adhered to the non-woven fabric The material can be attached directly and firmly. Further, even if the adhered portion side is a non-woven fabric, the adhesive material has good adhesiveness to the non-woven fabric side, and fluffing does not easily occur even when it is brought into contact with or separated from the non-woven fabric. Therefore, a transparent film is used on the front side sheet to integrally extend and form the lip, and the lip piece can be folded back to the non-woven fabric on the back side for sticking and closing, and formed separately from the storage bag body as in the conventional case. It is easier and cheaper to manufacture than the one provided by welding the lip pieces, and the appearance of the bag from the surface side can be improved.

Furthermore, both the base piece and the attached piece are made of a non-woven fabric to form a storage bag which is rich in air permeability and which can be opened and closed as described above.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention, and FIG. 2 is an enlarged side sectional view of the same. FIG. 3 and FIG. 4 are enlarged side sectional views of main parts showing another embodiment of the present invention. FIG. 5 is an enlarged side sectional view of an essential part showing a conventional structure. 6,10 …… Front side sheet, 6a, 10a, 11a …… Lip part,
7,11 …… Back side sheet, 7a …… Adhered area, 8 …… Adhesive material, 9 …… Release paper, 10b, 11b …… Attached section

Claims (1)

[Scope of utility model registration request] 1. A base piece having an upwardly extending lip portion for folding and closing and a side piece for forming a bag, one or both of which is made of a non-woven fabric. A storage bag, characterized in that a flattened portion is formed by pressing with a heating member or an ultrasonic welding member on the attached portion or the adhered portion.