Plastic-substituted packaging bag made of release paper

Abstract

The utility model discloses a plastic packaging bag made of release paper, the end part of a packaging bag main body is provided with a first heat sealing part, the packaging bag main body is formed by folding a single piece of release paper, and the side surface of the packaging bag main body is provided with a second heat sealing part. A base paper layer, a silicone oil layer and a heat sealing layer are sequentially arranged in the thickness direction of the packaging bag body from outside to inside, the silicone oil layer can have good oil-proof, water-proof and heat-insulation effects, the heat sealing layer surrounds the base paper layer by a circle and is close to the outer edge direction of the silicone oil layer, and the edge of the silicone oil layer is connected in a sealed mode through the heat sealing layer. Oil and water are prevented from permeating along the edge positions of the silicone oil layer and the base paper layer, food with high oil content can be contained, an easy-to-tear tape is arranged in the length direction of the first heat sealing part in a penetrating mode, when the packaging bag is opened, an opening can be formed in the end of the packaging bag by pulling the easy-to-tear tape, or the packaging bag is torn off along the side face of the packaging bag through the sawtooth tape, and opening is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bags, in particular to a plastic-substitute packaging bag made of release paper. Background Art

[0002] Packaging bags refer to bags used to package various items, making it easy to transport and store goods during production and circulation. Nowadays, there are also various types of food packaging bags, but according to actual figures, 80% of used plastic bags are eventually transported to landfills like general garbage, which pollutes the environment.

[0003] Paper bags and PP plastic bags are currently popular in the market. Plastic bags are polluting to the environment and are not easy to degrade, while paper food packaging bags can be recycled and reused, which also plays a certain role in environmental protection. However, although some existing paper packaging bags have replaced plastic packaging bags in food packaging, ordinary paper packaging bags do not have waterproof and oil-proof properties. When containing food, oil and liquid seepage will occur, and they do not have good heat resistance when containing hot food. Utility Model Content

[0004] In view of the technical defects existing in the background technology, the utility model proposes a release paper plastic-substitute packaging bag, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows:

[0005] A plastic-substitute packaging bag made of release paper comprises a packaging bag main body, an end portion of the packaging bag main body is provided with a first heat-sealing portion, the packaging bag main body is formed by folding a single piece of release paper, an outer edge of the first heat-sealing portion is provided with a serrated serrated belt, a side surface of the packaging bag main body is provided with a second heat-sealing portion extending along the length direction of the packaging bag main body, a base paper layer, a silicone oil layer and a heat-sealing layer are provided in sequence from outside to inside along the thickness direction of the packaging bag main body, a heat-sealing layer is provided around the base paper layer and close to the outer edge of the silicone oil layer, the silicone oil layer is coated on the inner end surface of the base paper layer, and the outer edge does not exceed the edge position of the base paper layer, an easy-tear belt is passed through along the length direction of the first heat-sealing portion, and the easy-tear belt is sandwiched between the base paper layer and the heat-sealing layer.

[0006] As an improvement of the above scheme, the first heat-sealing portion is formed by folding a single piece of release paper and then hot-pressing it, and a first base paper layer, a first heat-sealing layer and a second base paper layer are sequentially arranged from top to bottom along the thickness direction of the first heat-sealing portion, and the easy-tear tape is fixed between the first base paper layer and the second base paper layer through the first heat-sealing layer.

[0007] As an improvement of the above solution, a first silicone oil layer is coated on one end surface of the first base paper layer facing the first heat sealing layer, and an end of the first silicone oil layer extends between the first base paper layer and the first heat sealing layer and does not exceed the outer edge of the first heat sealing layer.

[0008] As an improvement of the above solution, a second silicone oil layer is coated on the end surface of the second base paper layer facing the first heat sealing layer, and the end of the second silicone oil layer extends between the second base paper layer and the first heat sealing layer and does not exceed the outer edge of the first heat sealing layer.

[0009] As an improvement of the above scheme, the second heat-sealing portion is formed by aligning the rear ends of a single release paper by folding it, and a third base paper layer, a second heat-sealing layer and a fourth base paper layer are arranged in sequence from top to bottom along the thickness direction of the second heat-sealing portion, and the third base paper layer and the second base paper layer are heat-pressed and bonded by the second heat-sealing layer.

[0010] As an improvement of the above solution, a third silicone oil layer is coated on one end surface of the third base paper layer facing the second heat sealing layer, and an end of the third silicone oil layer extends between the third base paper layer and the second heat sealing layer and does not exceed the outer edge of the second heat sealing layer.

[0011] As an improvement of the above solution, a fourth silicone oil layer is coated on the end surface of the fourth base paper layer facing the second heat sealing layer, and the end of the fourth silicone oil layer extends between the fourth base paper layer and the second heat sealing layer and does not exceed the outer edge of the second heat sealing layer.

[0012] The beneficial effects of the utility model are as follows: the packaging bag body is sealed by the first heat-sealing part and the second heat-sealing part, the inner surface layer of the packaging bag body is a silicone oil layer, which can play a good oil-proof, waterproof and heat-insulating effect, the edge of the silicone oil layer is sealed and connected by a heat-sealing layer to prevent oil and water from penetrating along the edge position of the silicone oil layer and the base paper layer, and can contain food with a high oil content. When opening, the easy-tear tape can be pulled to form an opening at the end of the packaging bag, or the packaging bag can be torn along the side of the packaging bag through the serrated tape, which is convenient to open. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the packaging bag main body of the utility model.

[0014] Figure 2 It is a schematic diagram of the structure of the packaging bag body in the thickness direction of the utility model.

[0015] Figure 3 It is a schematic structural diagram of the first heat sealing portion in the length direction of the utility model.

[0016] Figure 4 It is a schematic diagram of the structure of the first heat-sealing part in the thickness direction of the utility model.

[0017] Figure 5 It is a schematic diagram of the structure of the second heat-sealing part in the thickness direction of the utility model.

[0018] Among them: packaging bag body 1, base paper layer 2, silicone oil layer 3, first silicone oil layer 301, second silicone oil layer 302, third silicone oil layer 303, fourth silicone oil layer 304, heat sealing layer 4, first heat sealing part 5, first base paper layer 501, first heat sealing layer 502, second base paper layer 503, second heat sealing part 6, third base paper layer 601, second heat sealing layer 602, fourth base paper layer 603, serrated belt 7, easy-tear belt 8. DETAILED DESCRIPTION

[0019] The implementation methods of the present invention are described below in conjunction with the accompanying drawings and relevant embodiments. The implementation methods of the present invention are not limited to the following embodiments, and the present invention involves relevant necessary components in this technical field, which should be regarded as common knowledge in this technical field and can be known and mastered by technical personnel in this technical field.

[0020] like Figures 1 to 5 As shown, a release paper plastic substitute packaging bag comprises a packaging bag body 1, an end of the packaging bag body 1 is provided with a first heat sealing portion 5, the packaging bag body 1 is formed by folding a single piece of release paper, the outer edge of the first heat sealing portion 5 is provided with a serrated serrated belt 7, the side of the packaging bag body 1 is provided with a second heat sealing portion 6 extending along the length direction of the packaging bag body 1, and a base paper layer 2, a silicone oil layer 3 and a heat sealing layer 4 are sequentially provided from the outside to the inside along the thickness direction of the packaging bag body 1, a heat sealing layer 4 is provided around the base paper layer 2 and close to the outer edge of the silicone oil layer 3, the silicone oil layer 3 is coated on the inner end surface of the base paper layer 2, and the outer edge does not exceed the edge position of the base paper layer 2, an easy-tear belt 8 is passed through along the length direction of the first heat sealing portion 5, and the easy-tear belt 8 is sandwiched between the base paper layer 2 and the heat sealing layer 4.

[0021] like Figure 1 and Figure 2 As shown, in the structure of the utility model, the packaging bag body 1 is composed of a single base paper layer 2 that is folded multiple times along the length direction, and a first heat-sealing portion 5 is formed by heat-sealing on both sides of the base paper layer 2 in the width direction, and the two ends of the base paper layer 2 in the length direction are sealed by heat-sealing to form a second heat-sealing portion 6, and the second heat-sealing portion 6 is used to seal the packaging bag body 1 in the length direction. The inner surface of the packaging bag body 1 is a silicone oil layer 3, which has certain moisture-proof and waterproof properties and can effectively isolate the oil and water of the packaged food. The edge position of the silicone oil layer 3, that is, the position close to the first heat-sealing portion 5, is sealed by the heat-sealing layer 4 to prevent oil and water from moving along the surface of the silicone oil layer 3 to the edge of the silicone oil layer 3 and seeping through the base paper layer 2, and can be used to contain foods with higher oil and water content.

[0022] like Figure 3 and Figure 4 As shown, in the structure of the first heat-sealing portion 5 of the utility model, the first heat-sealing portion 5 is formed by folding a single release paper and then hot-pressing it, and a first base paper layer 501, a first heat-sealing layer 502 and a second base paper layer 503 are sequentially arranged from top to bottom along the thickness direction of the first heat-sealing portion 5, the number of the first heat-sealing layer 502 is at least one layer, and the easy-tear tape 8 is fixed between the first base paper layer 501 and the second base paper layer 503 through the first heat-sealing layer 502.

[0023] It should be noted that the first heat sealing layer 502 is attached to the end surface of the first base paper layer 501 facing the second base paper layer 503 and / or the end surface of the second base paper layer 503 facing the first base paper layer 501, and the easy-tear tape 8 is sandwiched between the first base paper layer 501 and the first heat sealing layer 502 or between the second base paper layer 503 and the first heat sealing layer 502.

[0024] like Figure 1 , Figure 3 and Figure 4 As shown, it should be noted that the end of the easy-tear tape 8 is inserted into the first base paper layer 501 and the second base paper layer 503 along the outer surface of the first base paper layer 501, and extends to the end of the first heat-sealing layer 502 along the length direction of the first heat-sealing layer 502. The easy-tear tape 8 is clamped on the side of the first heat-sealing layer 502 close to the silicone oil layer 3. When it needs to be torn, one end of the easy-tear tape 8 is pinched and pulled to tear a notch in the first base paper layer 501 corresponding to the first heat-sealing part 5, which is more convenient to open.

[0025] Furthermore, in the above scheme, a first silicone oil layer 301 is coated on one end surface of the first base paper layer 501 facing the first heat sealing layer 502, and an end of the first silicone oil layer 301 extends between the first base paper layer 501 and the first heat sealing layer 502 and does not exceed the outer edge of the first heat sealing layer 502.

[0026] Furthermore, in the above scheme, a second silicone oil layer 302 is coated on one end surface of the second base paper layer 503 facing the first heat sealing layer 502, and an end of the second silicone oil layer 302 extends between the second base paper layer 503 and the first heat sealing layer 502 and does not exceed the outer edge of the first heat sealing layer 502.

[0027] It should be noted that if Figure 4As shown, the upper end surface of the first heat sealing layer 502 covers the outer edge of the first silicone oil layer 301 and a portion of the first base paper layer 501, and the lower end surface of the first heat sealing layer 502 covers the outer edge of the second silicone oil layer 302 and a portion of the second base paper layer 503, the first base paper layer 501 and the second base paper layer 503 are bonded and sealed through one side of the first heat sealing layer 502, and the first silicone oil layer 301 and the second silicone oil layer 302 are bonded and sealed through the other side of the first heat sealing layer 502.

[0028] Furthermore, in the above scheme, the second heat-sealing portion 6 is formed by aligning the ends of a single release paper by folding and hot-pressing, and a third base paper layer 601, a second heat-sealing layer 602 and a fourth base paper layer 603 are sequentially arranged from top to bottom along the thickness direction of the second heat-sealing portion 6, and the third base paper layer 601 and the second base paper layer 503 are hot-pressed and bonded by the second heat-sealing layer 602.

[0029] Furthermore, in the above scheme, a third silicone oil layer 303 is coated on one end surface of the third base paper layer 601 facing the second heat sealing layer 602, and an end of the third silicone oil layer 303 extends between the third base paper layer 601 and the second heat sealing layer 602 and does not exceed the outer edge of the second heat sealing layer 602.

[0030] Furthermore, in the above scheme, the end surface of the fourth base paper layer 603 facing the second heat sealing layer 602 is coated with a fourth silicone oil layer 304, and the end of the fourth silicone oil layer 304 extends between the fourth base paper layer 603 and the second heat sealing layer 602 and does not exceed the outer edge of the second heat sealing layer 602.

[0031] It should be noted that if Figure 5 As shown, the upper end surface of the second heat-sealing layer 602 covers the outer edge of the third silicone oil layer 303 and a portion of the third base paper layer 601, and the lower end surface of the second heat-sealing layer 602 covers the outer edge of the fourth silicone oil layer 304 and a portion of the fourth base paper layer 603, the third base paper layer 601 and the fourth base paper layer 603 are bonded and sealed through one side of the second heat-sealing layer 602, and the third silicone oil layer 303 and the fourth silicone oil layer 304 are bonded and sealed through the other side of the second heat-sealing layer 602.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A release paper plastic packaging bag, characterized in that: The invention comprises a packaging bag body (1), wherein a first heat-sealing portion (5) is provided at the end of the packaging bag body (1), the packaging bag body (1) is formed by folding a single piece of release paper, a serrated serrated belt (7) is provided at the outer edge of the first heat-sealing portion (5), a second heat-sealing portion (6) is provided on the side of the packaging bag body (1) and extends along the length direction of the packaging bag body (1), a base paper layer (2), a silicone oil layer (3) and a heat-sealing layer (4) are provided in sequence from the outside to the inside along the thickness direction of the packaging bag body (1), a heat-sealing layer (4) is provided around the base paper layer (2) and close to the outer edge of the silicone oil layer (3), the silicone oil layer (3) is coated on the inner end surface of the base paper layer (2), and the outer edge does not exceed the edge position of the base paper layer (2), an easy-tear belt (8) is passed through along the length direction of the first heat-sealing portion (5), and the easy-tear belt (8) is sandwiched between the base paper layer (2) and the heat-sealing layer (4).

2. The release paper plastic packaging bag according to claim 1, characterized in that: The first heat-sealing portion (5) is formed by folding a single piece of release paper and then hot-pressing it, and a first base paper layer (501), a first heat-sealing layer (502) and a second base paper layer (503) are sequentially arranged from top to bottom along the thickness direction of the first heat-sealing portion (5), and the easy-tear tape (8) is fixed between the first base paper layer (501) and the second base paper layer (503) through the first heat-sealing layer (502).

3. The release paper plastic packaging bag according to claim 2, characterized in that: A first silicone oil layer (301) is coated on an end surface of the first base paper layer (501) facing the first heat sealing layer (502), and an end of the first silicone oil layer (301) extends between the first base paper layer (501) and the first heat sealing layer (502) and does not exceed the outer edge of the first heat sealing layer (502).

4. The release paper plastic packaging bag according to claim 2, characterized in that: A second silicone oil layer (302) is coated on the end surface of the second base paper layer (503) facing the first heat sealing layer (502), and an end of the second silicone oil layer (302) extends between the second base paper layer (503) and the first heat sealing layer (502) and does not exceed the outer edge of the first heat sealing layer (502).

5. The release paper plastic packaging bag according to claim 1, characterized in that: The second heat-sealing portion (6) is formed by folding a single sheet of release paper and aligning the end portions thereof under heat pressing. A third base paper layer (601), a second heat-sealing layer (602) and a fourth base paper layer (603) are sequentially arranged from top to bottom along the thickness direction of the second heat-sealing portion (6). The third base paper layer (601) and the second base paper layer (503) are heat-pressed and bonded to each other via the second heat-sealing layer (602).

6. The release paper plastic packaging bag according to claim 5, characterized in that: A third silicone oil layer (303) is coated on an end surface of the third base paper layer (601) facing the second heat sealing layer (602), and an end portion of the third silicone oil layer (303) extends between the third base paper layer (601) and the second heat sealing layer (602) and does not exceed an outer edge of the second heat sealing layer (602).

7. The release paper plastic-substitute packaging bag according to claim 5, characterized in that: A fourth silicone oil layer (304) is coated on an end surface of the fourth base paper layer (603) facing the second heat sealing layer (602), and an end portion of the fourth silicone oil layer (304) extends between the fourth base paper layer (603) and the second heat sealing layer (602) and does not exceed an outer edge of the second heat sealing layer (602).

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