Self-standing fresh-locking high-temperature-resistant retort pouch

Abstract

The utility model relates to the technical field of packaging bags, in particular to a self-standing freshness-locking high-temperature-resistant retort pouch which comprises a pouch body, a self-standing bottom, a first easy-to-tear opening, a second easy-to-tear opening, bonding points, a protective layer, an anti-oxidation layer, an anti-puncture layer and a high-temperature-resistant layer. The self-standing fresh-locking high-temperature-resistant retort pouch made of an AL film with the thickness of 0.007 mm, a PA film with the thickness of 0.015 mm and a PE film with the thickness of 0.075 mm has certain high-temperature retort performance, is good in shading effect and excellent in impermeability, and can be sterilized at the high temperature of 130 DEG C and the retort time of not less than 40 minutes, so that semi-finished chestnut kernels are retort to obtain finished products, and the quality of the finished chestnut kernels is improved. A series of operations play a certain role in fresh locking, fresh keeping and high-temperature sterilizing and cooking.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bags, and more specifically, to a self-standing fresh-locking and high-temperature resistant retort bag. Background Art

[0002] When processing chestnut kernels, food factories first make the chestnut kernels into semi-finished products, and then seal them in packaging bags for packaging. When they need to be eaten, the packaging bags need to be steamed before they can be eaten.

[0003] Existing packaging bags have poor freshness-locking effects and cannot extend the shelf life of chestnut kernels. In addition, the packaging bags have a short boiling resistance time and cannot meet the sterilization requirements. Therefore, a self-supporting, fresh-locking, and high-temperature retort bag that can lock in freshness and sterilize and cook at high temperatures is needed to solve the above problems. Utility Model Content

[0004] The utility model provides a self-standing fresh-locking and high-temperature cooking bag to solve the technical problems that the existing packaging bags have poor fresh-locking effect, cannot extend the shelf life of chestnut kernels, and the packaging bags have a short cooking time and cannot meet the sterilization effect. The utility model comprises a bag body, a self-standing bottom, and a first easy-to-tear opening. The self-standing bottom is located below the bag body, the first easy-to-tear opening is located on both sides of the upper end of the bag body, and bonding points are respectively provided on both sides of the inner side of the self-standing bottom. The bag body comprises a protective layer with good support and heat resistance, an antioxidant layer with barrier and antioxidant properties, an anti-puncture layer with puncture resistance, and a high-temperature resistant layer with high-temperature resistance. The protective layer, the antioxidant layer, the anti-puncture layer, and the high-temperature resistant layer are overlapped in sequence from top to bottom, and the protective layer, the antioxidant layer, the anti-puncture layer, and the high-temperature resistant layer are respectively compounded with glue.

[0005] Preferably, the protective layer is a PET film with good strength and heat resistance. The thickness of the PET film is 0.012 mm. The PET film is usually a transparent, glossy film with high rigidity, hardness and toughness, good air tightness and fragrance retention. Its tensile strength and impact strength are much higher than those of ordinary films. It also has good strength and stable dimensions, and is one of the commonly used composite film substrates.

[0006] Preferably, the anti-oxidation layer is an AL film with barrier and antioxidant properties. The thickness of the AL film is 0.007 mm. The AL film is not easily oxidized and has excellent oxidation resistance, effectively protecting the contents from oxidation. This feature is particularly important in food and pharmaceutical packaging, as it can extend the shelf life of the product.

[0007] AL film has good light-shielding properties: it can effectively block the penetration of light, thereby protecting the items in the package from the effects of light. This is very beneficial for items that need to be kept away from light.

[0008] AL film has good thermal insulation performance: it has a significant reflection effect on heat energy, which makes it perform well in thermal insulation.

[0009] AL membrane has good acid and alkali resistance: AL membrane has been specially treated and has good chemical stability, and can maintain stable performance in acidic or alkaline environments.

[0010] Preferably, the puncture-resistant layer is a PA film with puncture-resistant properties, and the thickness of the PA film is 0.015 mm. The PA film has the advantages of wear resistance, toughness, chemical resistance, heat resistance, cold resistance, easy molding, self-lubrication, non-toxicity, easy dyeing, and good puncture resistance.

[0011] Preferably, the high-temperature resistant layer is a PE film with high-temperature resistance. The thickness of the PE film is 0.075 mm. The PE film can maintain the color, aroma, taste and shape of the food to a great extent, and can also effectively kill bacteria during high-temperature cooking. The PE film has the properties of light weight, high transparency, strong mechanical adaptability, moisture resistance, and good heat resistance. In particular, it can withstand cooking in a high-temperature environment of 130 degrees Celsius. It is a very practical film.

[0012] Preferably, sealing strips are respectively provided on the upper inner portion and the middle portion of the bag body, and the sealing strips are used to seal the packaging bag.

[0013] Preferably, a hanging hole is provided on the top of the bag body, and the hanging hole is used for hanging.

[0014] Preferably, the composite glue is a polyurethane adhesive with a viscosity of 20 mPa·s.

[0015] Preferably, second easy-tear openings are respectively provided on both sides of the middle portion of the bag body. After the second easy-tear openings are torn open, the height of the bag can be reduced to facilitate taking out food.

[0016] Preferably, the edge of the self-supporting bottom is a rounded edge, which prevents scratches on users.

[0017] Compared with the prior art, the gain effect of the utility model is:

[0018] The utility model discloses a self-standing fresh-locking high-temperature cooking bag which adopts a PET film with a thickness of 0.012mm, an AL film with a thickness of 0.007mm, a PA film with a thickness of 0.015mm and a PE film with a thickness of 0.075mm. The self-standing fresh-locking high-temperature cooking bag which is composited by the above four-layer material structure has certain high-temperature cooking performance, good light-shielding effect, and excellent anti-penetration performance. It can reach a high temperature of 130 degrees and the cooking time is not less than 40 minutes for sterilization. The good strength and heat resistance of the PET film are combined with the high barrier performance of AL and the elongation performance of PA, and the high-temperature resistance and cooking performance of the PE film, so that the semi-finished chestnut kernels can be steamed to become the finished product. The series of operations play a certain role in locking freshness, preserving freshness and high-temperature sterilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a self-supporting, fresh-keeping, high-temperature resistant cooking bag of the utility model;

[0021] Figure 2 This is a schematic diagram of the self-supporting bottom structure of a self-supporting fresh-keeping high-temperature resistant cooking bag of the utility model;

[0022] Figure 3 This is a schematic diagram of the unfolded structure of a self-supporting, fresh-keeping, and high-temperature resistant retort bag of the present invention;

[0023] Figure 4 The utility model is a schematic diagram of the cross-sectional structure of a self-supporting fresh-keeping high-temperature resistant cooking bag.

[0024] The following are the descriptions of the accompanying figures:

[0025] 1. Bag body, 2. Self-supporting bottom, 3. First easy-tear opening, 4. Second easy-tear opening, 5. Adhesive point, 11. Protective layer, 12. Anti-oxidation layer, 13. Anti-puncture layer, 14. High-temperature resistant layer. DETAILED DESCRIPTION

[0026] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] Example 1

[0028] See also Figure 1 — Figure 4 The self-standing fresh-keeping and high-temperature resistant cooking bag shown in the figure includes a bag body 1, a self-standing bottom 2, and a first easy-tear opening 3. The self-standing bottom 2 is located below the bag body 1, and the first easy-tear opening 3 is located on both sides of the upper end of the bag body 1. Adhesive points 5 are respectively provided on both sides of the inside of the self-standing bottom 2. The bag body 1 includes a protective layer 11 with good strength and heat resistance, an antioxidant layer 12 with barrier and antioxidant properties, an anti-puncture layer 13 with puncture resistance, and a high-temperature resistant layer 14 with high-temperature resistance. The protective layer 11, the antioxidant layer 12, the anti-puncture layer 13, and the high-temperature resistant layer 14 are overlapped from top to bottom in sequence, and the protective layer 11, the antioxidant layer 12, the anti-puncture layer 13, and the high-temperature resistant layer 14 are respectively compounded with glue.

[0029] The protective layer 11 is a PET film with good strength and heat resistance. The thickness of the PET film is 0.012 mm. The PET film is usually a transparent, glossy film with high rigidity, hardness and toughness, good air tightness and fragrance retention. Its tensile strength and impact strength are much higher than those of ordinary films. It also has good strength and stable dimensions, and is one of the commonly used composite film substrates.

[0030] The anti-oxidation layer 12 is an AL film with barrier and antioxidant properties. The thickness of the AL film is 0.007 mm. The AL film is not easily oxidized and has excellent oxidation resistance, effectively protecting the contents from oxidation. This feature is particularly important in food and pharmaceutical packaging, as it can extend the shelf life of the products.

[0031] AL film has good light-shielding properties: it can effectively block the penetration of light, thereby protecting the items in the package from the effects of light. This is very beneficial for items that need to be kept away from light.

[0032] AL film has good thermal insulation performance: it has a significant reflection effect on heat energy, which makes it perform well in thermal insulation.

[0033] AL membrane has good acid and alkali resistance: AL membrane has been specially treated and has good chemical stability, and can maintain stable performance in acidic or alkaline environments.

[0034] The anti-puncture layer 13 is a PA film with puncture resistance. The thickness of the PA film is 0.015 mm. The PA film has the advantages of wear resistance, toughness, chemical resistance, heat resistance, cold resistance, easy molding, self-lubrication, non-toxicity, easy dyeing, and good puncture resistance.

[0035] The high temperature resistant layer 14 is a PE film with high temperature resistance. The thickness of the PE film is 0.075 mm. The PE film can maintain the color, aroma, taste and shape of the food to a great extent, and can also effectively kill bacteria during high temperature cooking. The PE film has the properties of light weight, high transparency, strong mechanical adaptability, moisture resistance and good heat resistance. In particular, it can withstand cooking in a high temperature environment of 130 degrees Celsius. It is a very practical film.

[0036] The composite glue is a polyurethane adhesive with a viscosity of 20 mPa·s.

[0037] When the self-standing fresh-keeping high-temperature cooking bag of Example 1 needs to be used, the bag body 1 is directly subjected to high-temperature cooking. After completion, the first easy-tear opening 3 is torn open and the bag can be eaten. The self-standing bottom 2 is W-shaped and can be placed independently after being bonded by the bonding points 5.

[0038] Example 2

[0039] See also Figure 1 — Figure 4 The self-standing fresh-keeping and high-temperature resistant cooking bag shown in the figure includes a bag body 1, a self-standing bottom 2, and a first easy-tear opening 3. The self-standing bottom 2 is located below the bag body 1, and the first easy-tear opening 3 is located on both sides of the upper end of the bag body 1. Adhesive points 5 are respectively provided on both sides of the inside of the self-standing bottom 2. The bag body 1 includes a protective layer 11 with good strength and heat resistance, an antioxidant layer 12 with barrier and antioxidant properties, an anti-puncture layer 13 with puncture resistance, and a high-temperature resistant layer 14 with high-temperature resistance. The protective layer 11, the antioxidant layer 12, the anti-puncture layer 13, and the high-temperature resistant layer 14 are overlapped from top to bottom in sequence, and the protective layer 11, the antioxidant layer 12, the anti-puncture layer 13, and the high-temperature resistant layer 14 are respectively compounded with glue.

[0040] The protective layer 11 is a PET film with good strength and heat resistance. The thickness of the PET film is 0.012 mm. The PET film is usually a transparent, glossy film with high rigidity, hardness and toughness, good air tightness and fragrance retention. Its tensile strength and impact strength are much higher than those of ordinary films. It also has good strength and stable dimensions, and is one of the commonly used composite film substrates.

[0041] The anti-oxidation layer 12 is an AL film with barrier and antioxidant properties. The thickness of the AL film is 0.007 mm. The AL film is not easily oxidized and has excellent oxidation resistance, effectively protecting the contents from oxidation. This feature is particularly important in food and pharmaceutical packaging, as it can extend the shelf life of the products.

[0042] AL film has good light-shielding properties: it can effectively block the penetration of light, thereby protecting the items in the package from the effects of light. This is very beneficial for items that need to be kept away from light.

[0043] AL film has good thermal insulation performance: it has a significant reflection effect on heat energy, which makes it perform well in thermal insulation.

[0044] AL membrane has good acid and alkali resistance: AL membrane has been specially treated and has good chemical stability, and can maintain stable performance in acidic or alkaline environments.

[0045] The anti-puncture layer 13 is a PA film with puncture resistance. The thickness of the PA film is 0.015 mm. The PA film has the advantages of wear resistance, toughness, chemical resistance, heat resistance, cold resistance, easy molding, self-lubrication, non-toxicity, easy dyeing, and good puncture resistance.

[0046] The high temperature resistant layer 14 is a PE film with high temperature resistance. The thickness of the PE film is 0.075 mm. The PE film can maintain the color, aroma, taste and shape of the food to a great extent, and can also effectively kill bacteria during high temperature cooking. The PE film has the properties of light weight, high transparency, strong mechanical adaptability, moisture resistance and good heat resistance. In particular, it can withstand cooking in a high temperature environment of 130 degrees Celsius. It is a very practical film.

[0047] The top of the bag body 1 is provided with a hanging hole for hanging.

[0048] The composite glue is a polyurethane adhesive with a viscosity of 20 mPa·s.

[0049] The edge of the self-supporting bottom 2 is a rounded edge, which prevents the user from being scratched.

[0050] When a self-standing fresh-keeping high-temperature cooking bag of Example 2 needs to be used, the bag body 1 is directly subjected to high-temperature cooking. After completion, the bag body 1 can be eaten by tearing off the first tearable opening 3. A hanging hole is provided on the top of the bag body 1 for hanging. The self-standing bottom 2 is W-shaped and can be placed independently after being bonded by the bonding point 5. The edge of the self-standing bottom 2 is an arc edge, which prevents scratches on users.

[0051] Example 3

[0052] See also Figure 1 — Figure 4The self-standing fresh-keeping and high-temperature resistant cooking bag shown in the figure includes a bag body 1, a self-standing bottom 2, and a first easy-tear opening 3. The self-standing bottom 2 is located below the bag body 1, and the first easy-tear opening 3 is located on both sides of the upper end of the bag body 1. Adhesive points 5 are respectively provided on both sides of the inside of the self-standing bottom 2. The bag body 1 includes a protective layer 11 with good strength and heat resistance, an antioxidant layer 12 with barrier and antioxidant properties, an anti-puncture layer 13 with puncture resistance, and a high-temperature resistant layer 14 with high-temperature resistance. The protective layer 11, the antioxidant layer 12, the anti-puncture layer 13, and the high-temperature resistant layer 14 are overlapped from top to bottom in sequence, and the protective layer 11, the antioxidant layer 12, the anti-puncture layer 13, and the high-temperature resistant layer 14 are respectively compounded with glue.

[0053] The protective layer 11 is a PET film with good strength and heat resistance. The thickness of the PET film is 0.012 mm. The PET film is usually a transparent, glossy film with high rigidity, hardness and toughness, good air tightness and fragrance retention. Its tensile strength and impact strength are much higher than those of ordinary films. It also has good strength and stable dimensions, and is one of the commonly used composite film substrates.

[0054] The anti-oxidation layer 12 is an AL film with barrier and antioxidant properties. The thickness of the AL film is 0.007 mm. The AL film is not easily oxidized and has excellent oxidation resistance, effectively protecting the contents from oxidation. This feature is particularly important in food and pharmaceutical packaging, as it can extend the shelf life of the products.

[0055] AL film has good light-shielding properties: it can effectively block the penetration of light, thereby protecting the items in the package from the effects of light. This is very beneficial for items that need to be kept away from light.

[0056] AL film has good thermal insulation performance: it has a significant reflection effect on heat energy, which makes it perform well in thermal insulation.

[0057] AL membrane has good acid and alkali resistance: AL membrane has been specially treated and has good chemical stability, and can maintain stable performance in acidic or alkaline environments.

[0058] The anti-puncture layer 13 is a PA film with puncture resistance. The thickness of the PA film is 0.015 mm. The PA film has the advantages of wear resistance, toughness, chemical resistance, heat resistance, cold resistance, easy molding, self-lubrication, non-toxicity, easy dyeing, and good puncture resistance.

[0059] The high temperature resistant layer 14 is a PE film with high temperature resistance. The thickness of the PE film is 0.075 mm. The PE film can maintain the color, aroma, taste and shape of the food to a great extent, and can also effectively kill bacteria during high temperature cooking. The PE film has the properties of light weight, high transparency, strong mechanical adaptability, moisture resistance and good heat resistance. In particular, it can withstand cooking in a high temperature environment of 130 degrees Celsius. It is a very practical film.

[0060] The upper and middle parts of the inner side of the bag body 1 are respectively provided with sealing strips, which are used to seal the packaging bag.

[0061] The top of the bag body 1 is provided with a hanging hole for hanging.

[0062] The composite glue is a polyurethane adhesive with a viscosity of 20 mPa·s.

[0063] Second easy-tear openings 4 are respectively provided on both sides of the middle of the bag body 1. After the second easy-tear openings 4 are torn open, the height of the bag can be reduced to facilitate taking out food.

[0064] The edge of the self-supporting bottom 2 is a rounded edge, which prevents the user from being scratched.

[0065] When a self-standing fresh-keeping high-temperature cooking bag of Example 3 needs to be used, the bag body 1 is directly subjected to high-temperature cooking. After completion, the first easy-tear opening 3 is torn open and the food can be eaten. The remaining ingredients can be sealed with a sealing strip. A hanging hole is provided on the top of the bag body 1 for hanging. The self-standing bottom 2 is W-shaped and can be placed independently after being bonded by the bonding point 5. The edge of the self-standing bottom 2 is an arc edge to prevent scratches on users.

[0066] When eating too much, the food will be difficult to take out at the bottom of the bag body 1. At this time, the second easy-tear opening 4 can be torn open to facilitate reaching in and taking out the food. After taking out the food, the sealing strip provided in the middle of the inner side of the bag body 1 can be used to seal it.

[0067] The self-supporting, fresh-keeping, high-temperature resistant retort pouch prepared in Example 3 was tested and showed the following performance:

[0068] Breaking force: horizontal 112.5N, vertical 105N

[0069] Elongation: 93% in horizontal direction, 95% in vertical direction

[0070] Heat seal strength: horizontal 79.9N, vertical 65.2N

[0071] Maximum temperature: 130℃

[0072] Cooking time: 40 minutes

[0073] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-supporting fresh-keeping high-temperature resistant cooking bag, characterized in that: The bag comprises a bag body (1), a self-supporting bottom (2), and a first easy-tear opening (3), wherein the self-supporting bottom (2) is located below the bag body (1), the first easy-tear opening (3) is located on both sides of the upper end of the bag body (1), and adhesive points (5) are respectively provided on both sides of the interior of the self-supporting bottom (2), and the bag body (1) comprises a protective layer (11) with good strength and heat resistance, an anti-oxidation layer (12) with barrier and anti-oxidation properties, an anti-puncture layer (13) with anti-puncture properties, and a high-temperature resistant layer (14) with high-temperature resistant properties, wherein the protective layer (11), the anti-oxidation layer (12), the anti-puncture layer (13), and the high-temperature resistant layer (14) are overlapped in sequence from top to bottom, and the protective layer (11), the anti-oxidation layer (12), the anti-puncture layer (13), and the high-temperature resistant layer (14) are respectively compounded by glue.

2. The self-supporting fresh-keeping high-temperature resistant cooking bag according to claim 1, characterized in that: The protective layer (11) is a PET film with good strength and heat resistance, and the thickness of the PET film is 0.012 mm.

3. The self-supporting fresh-keeping high-temperature resistant retort bag according to claim 1, characterized in that: The anti-oxidation layer (12) is an AL film with barrier and anti-oxidation properties, and the thickness of the AL film is 0.007 mm.

4. The self-supporting fresh-keeping high-temperature resistant retort bag according to claim 1, characterized in that: The anti-puncture layer (13) is a PA film with anti-puncture performance, and the thickness of the PA film is 0.015 mm.

5. The self-supporting fresh-keeping high-temperature resistant retort bag according to claim 1, characterized in that: The high temperature resistant layer (14) is a PE film with high temperature resistant performance, and the thickness of the PE film is 0.075 mm.

6. The self-supporting fresh-keeping high-temperature resistant retort bag according to claim 1, characterized in that: Sealing strips are respectively provided on the upper inner portion and the middle inner portion of the bag body (1).

7. The self-supporting fresh-keeping high-temperature resistant retort bag according to claim 1, characterized in that: A hanging hole is provided on the top of the bag body (1).

8. The self-supporting fresh-keeping high-temperature resistant retort bag according to claim 1, characterized in that: The composite glue is a polyurethane adhesive with a viscosity of 20 mPa·s.

9. The self-supporting fresh-keeping high-temperature resistant retort bag according to claim 1, characterized in that: Second easy-tear openings (4) are respectively provided on both sides of the middle portion of the bag body (1).

10. The self-supporting fresh-keeping high-temperature resistant retort bag according to claim 1, characterized in that: The edge of the self-supporting bottom (2) is an arc edge.

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