Aluminum-plated packaging film and packaging bag

Abstract

The utility model relates to an aluminized packaging film and a packaging bag, and belongs to the technical field of aluminized packaging films, the aluminized packaging film comprises a first base layer PE, a first aluminum layer is combined on the first base layer PE, the first base layer PE and the first aluminum layer form a first aluminized PE layer, the first aluminized PE layer is combined with a second aluminized PE layer through composite glue, and the structure of the second aluminized PE layer is that a second aluminum layer is arranged on the lower layer, and a second aluminum layer is arranged on the upper layer. According to the packaging film, the first base layer PE is combined on the first aluminum layer, the second base layer PE is combined on the second aluminum layer, the first LDPE layer is arranged on the second base layer, the first base layer PE and the second base layer PE are combined through composite glue, the glue layer combines the first aluminum layer and the second aluminum layer, and meanwhile the barrier property of the packaging film can be further improved; the outer first base layer PE and the outer second base layer PE can still maintain the heat sealing performance of the packaging film and are used for being compounded with PTE, OPP and NY materials for bag making, so that materials and additional working procedures are saved, recycling is easy, the packaging bag can exhaust redundant air through the one-way air valve, and packaging materials can be better stored and used.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminized packaging films, in particular to an aluminized packaging film and a packaging bag. Background Art

[0002] Aluminum-coated packaging film is a traditional plastic film coated with a layer of metallic aluminum. The commonly used aluminized substrate is a composite film formed by aluminum coating on a PE film. Since the aluminum layer is extremely thin, the packaging film still has good softness, so it can become a commonly used flexible packaging material. The aluminized packaging film has excellent barrier properties, can block light, and is resistant to chemical corrosion. It is widely used. Generally, its excellent light and moisture isolation properties are used to store food, some daily necessities, such as soft products such as toothpaste and laundry detergent, and container packaging with a certain structural strength for bacteria isolation.

[0003] Although the existing aluminized PE film has certain insulation properties, it is not easy to heat-seal itself and needs to be compounded with other substrates to form a processable product packaging. Moreover, traditional aluminized packaging films, whether they are sterile food packaging or cylindrical hose packaging, are not easy to separate and recycle during recycling. The traditional aluminum layer and its similar composite film are tightly combined with EAA resin and are difficult to recycle. Moreover, after the packaging bags are made, some packaging bags that need to be opened twice also lack further auxiliary functions. After opening, they are difficult to close and there are openings connected to the outside, which is very unfavorable for the storage of internal products.

[0004] Therefore propose the utility model. Utility Model Content

[0005] In order to overcome the technical defects of the existing technology, the utility model provides an aluminized packaging film and packaging bag, which are easier to recycle than traditional aluminized packaging films, and the packaging bags made can discharge excess air through a one-way air valve, so as to better store and use the packaged materials.

[0006] The technical solution adopted by the present utility model is as follows: an aluminized packaging film, including a first base layer of PE, a first aluminum layer is combined on the first base layer of PE, the first base layer of PE and the first aluminum layer form a first aluminized PE layer, the first aluminized PE layer is combined with a second aluminized PE layer through composite glue, the structure of the second aluminized PE layer is that the lower layer is a second aluminum layer, a second base layer of PE is combined on the second aluminum layer, a first LDPE layer is provided on the second base layer, the first base layer of PE and the second base layer of PE are combined by using composite glue, and the glue layer combines the first aluminum layer and the second aluminum layer, and at the same time, the barrier property of the packaging film can be further improved. The first base layer of PE and the second base layer of PE on the outside can still maintain the heat-sealing performance of the packaging film, and are used for compounding with PTE, OPP and NY materials to make bags, thereby saving materials and additional processes.

[0007] Preferably, in order to provide good support effect and antibacterial property, a paper layer is provided on the first LDPE layer, and a second LDPE layer is provided on the paper layer. Setting a paper layer on one side of the second base layer of PE can provide sufficient structural strength of the packaging bag and can carry a large amount of liquid, such as containing beverages.

[0008] Preferably, in order to meet the requirements of some outer packaging for structural thickness and softness, a second LDPE layer is provided below the first aluminized PE layer. The first LDPE layer and the second LDPE layer are both formed by hot melt extrusion coating process. An inner PE layer is provided below the second LDPE layer, and an outer PE layer is provided on the first LDPE layer.

[0009] Preferably, in order to improve the toughness of the packaging bag, a BOPP layer is provided on the first LDPE layer, and a second LDPE layer is provided on the BOPP layer.

[0010] A packaging bag of an aluminized packaging film includes a main body portion formed by pressing the head and tail of the packaging film layer. On both sides of the main body portion, there are side body portions for sealing the space. The edges of the side body portion and the main body portion are pressed and sealed with each other. In order to improve the structural strength and facilitate the improvement of the sealing degree, the pressed edge can play a certain structural support role. The bottom end of the main body portion is provided with a standing flat bottom, and the standing flat bottom is used to contact the plane on which the packaging bag is placed. A handle hole is provided through the upper part of the main body portion, and the handle hole is used for the user to pick up. At the top end of the main body portion above the handle hole, there is a protruding portion. Setting the protruding portion can move the handle hole upward, thereby reducing the space occupied by the main body portion. On one side of the upper end of the main body portion, there is a sealing strip. The sealing strip is a commonly used quick-sealing device, which is commonly used in the field of food packaging bags and is generally made of food-grade plastic. By pinching, the two sides can be mutually engaged. On the top end of the other side of the main body portion, there is a serrated opening, and the serrated opening is used to directly tear the main body portion when necessary.

[0011] Preferably, in order to more easily pick up the packaging bag, a handheld part is hermetically embedded in the handle hole. The two sides of the handheld part extend towards the two sides of the main body part. The bottom of the handheld part forms an intermediate platform. A one-way air valve communicated with the inside of the main body part is installed on the intermediate platform. A cover body is arranged on the one-way air valve. The connection mode between the cover body and the one-way air valve is threaded connection. The one-way air valve is a ball stopper controlled by gravity or an elastic member. In a static state, it blocks the channel communicated between the one-way air valve and the main body part. In order to prevent accidents, a lower blocking member can be suspended at the bottom end of the channel to re-block the channel when the discharged air flow is too large or there is an object at the bottom about to overflow. The lower blocking member can use a lightweight ball to be more easily triggered.

[0012] Preferably, in order to facilitate the user to manually discharge the excess air, extrusion plate members are arranged on both side surfaces of the main body part. The extrusion plate member includes a connecting cross plate horizontally arranged on the main body part, and a first claw member extending downward is fixed at the bottom of the connecting cross plate.

[0013] Preferably, in order to make the extrusion range more comprehensive, the extrusion plate member further includes second claw members located on both sides of the first claw member, and the second claw members extend obliquely outwards.

[0014] The beneficial effects of the present utility model are as follows: compared with the traditional aluminized packaging film, it is easier to recycle. The first aluminum layer and the second aluminum layer are combined by using a composite glue, and at the same time, the barrier property of the packaging film can be further improved. The external first base layer PE and second base layer PE can still maintain the heat sealing performance of the packaging film, and are used for compounding with PTE, OPP and NY materials to make bags, thereby saving materials and additional processes. Moreover, the made packaging bag can discharge the excess air through the one-way air valve. When in use, press the extrusion plate members on both sides to make the gas discharge from the one-way air valve. Then, for safety, the cover body can be reinstalled and reset to reduce the air content in the main body part, so as to better store and use the packaged object. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the combination of the first aluminized PE layer and the second aluminized PE layer of the present utility model.

[0016] Figure 2 It is a schematic structural diagram of Embodiment 1 of the present utility model.

[0017] Figure 3 It is a schematic structural diagram of Embodiment 2 of the present utility model.

[0018] Figure 4 It is a schematic structural diagram of Embodiment 3 of the present utility model.

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the packaging bag of the present utility model.

[0020] Figure 6 is Figure 5 an enlarged structural schematic diagram of part A in

[0021] Figure 7 This is a schematic diagram of the sealing strip structure of the packaging bag of the present utility model.

[0022] Explanation of reference numerals in the drawings: In the figure: 1. First base layer PE; 2. First aluminum layer; 3. First aluminized PE layer; 4. Second aluminized PE layer; 5. Second aluminum layer; 6. Second base layer PE; 7. First LDPE layer; 8. Paper layer; 9. Second LDPE layer; 10. Inner PE layer; 11. Outer PE layer; 12. Main body part; 121. Standing flat bottom part; 122. Protruding part; 123. Sealing strip; 13. Side body part; 14. Hand-held part; 15. One-way air valve; 151. Cover body; 16. Extrusion plate member; 161. Connecting cross plate; 162. First claw member; 163. Second claw member; 17. BOPP layer. Detailed implementation manners

[0023] The present utility model will be further described below with reference to the accompanying drawings: Embodiment 1

[0024] As Figures 1-2 and Figures 5-7 shown, this embodiment provides an aluminized packaging film, which includes a first base layer PE1, a first aluminum layer2 is combined on the first base layer PE1, the first base layer PE1 and the first aluminum layer2 form a first aluminized PE layer3, the first aluminized PE layer3 is combined with a second aluminized PE layer4 through composite glue, the structure of the second aluminized PE layer4 is that the lower layer is a second aluminum layer5, a second base layer PE6 is combined on the second aluminum layer5, a first LDPE layer7 is provided on the second base layer, the first base layer PE1 and the second base layer PE6 are combined by using composite glue, and the glue layer combines the first aluminum layer2 and the second aluminum layer5, and at the same time, it can further improve the barrier property of the packaging film. The outer first base layer PE1 and the second base layer PE6 can still maintain the heat-sealing performance of the packaging film, and are used for compounding with PTE, OPP and NY materials to make bags, thereby saving materials and additional processes.

[0025] In order to provide good support effect and antibacterial property, a paper layer8 is provided on the first LDPE layer7, a second LDPE layer9 is provided on the paper layer8, and a paper layer8 is arranged on one side of the second base layer PE6, which can provide sufficient structural strength of the packaging bag and can carry a large amount of liquid, such as containing beverages.

[0026] A packaging bag for an aluminized packaging film, comprising a main body portion 12 formed by pressing the head and tail of the packaging film layer. On both sides of the main body portion 12, there are side body portions 13 for sealing the space. The edges of the side body portions 13 and the main body portion 12 are pressed together for sealing. In order to improve the structural strength and facilitate the improvement of the sealing degree, the pressed edges can play a certain role in structural support. At the bottom end of the main body portion 12, there is a standing flat bottom portion 121 for contacting the plane on which the packaging bag is placed. A handle hole is provided through the upper part of the main body portion 12 for the user to take. At the top end of the main body portion 12 above the handle hole, there is a protruding portion 122. The setting of the protruding portion 122 can move the handle hole upward, thereby reducing the space occupied by the main body portion 12. On one side of the upper end of the main body portion 12, there is a sealing strip 123. The sealing strip 123 is a commonly used quick-sealing device, often used in the field of food packaging bags, generally made of food-grade plastic, and the two sides can be snapped together by pinching. On the top end of the other side of the main body portion 12, there is a serrated opening for directly tearing the main body portion 12 when necessary.

[0027] A handheld portion 14 is hermetically embedded in the handle hole. The two sides of the handheld portion 14 extend towards the two sides of the main body portion 12. The bottom of the handheld portion 14 forms a middle platform. A one-way air valve 15 connected to the inside of the main body portion 12 is installed on the middle platform. A cover body 151 is provided on the one-way air valve 15. The connection method between the cover body 151 and the one-way air valve 15 is a threaded connection. The one-way air valve 15 is a ball stopper controlled by gravity or an elastic member. In the static state, it blocks the channel communicating between the one-way air valve 15 and the main body portion 12. In order to prevent accidents, a lower blocking member can be suspended at the bottom end of the channel to block the channel again when the discharged air flow is too large or there is an object at the bottom about to overflow. The lower blocking member can use a light ball to be more easily triggered, so that the packaging bag can be taken more labor-savingly.

[0028] On both side surfaces of the main body portion 12, there are extrusion plate members 16. The extrusion plate members 16 include a connecting cross plate 161 horizontally arranged on the main body portion 12. At the bottom of the connecting cross plate 161, a first claw member 162 extending downward is fixed, which can facilitate the user to manually discharge the excess air. The extrusion plate member 16 further includes second claw members 163 located on both sides of the first claw member 162. The second claw members 163 extend obliquely outward, so that the extrusion range can be more comprehensive.

[0029] This packaging film is more recyclable than traditional aluminized packaging films. Instead of using traditional EAA resin for adhesion, a composite glue is used to bond the first aluminum layer 2 and the second aluminum layer 5. The composite glue is Dow Rohm & Haas solvent-free adhesive, model MOR-FREETM 806A. At the same time, it can further enhance the barrier property of the packaging film. The outer first base layer PE1 and the second base layer PE6 can still maintain the heat-sealing performance of the packaging film, which is used to be compounded with PTE, OPP, and NY materials to make bags, thus saving materials and additional processes.

[0030] Moreover, the packaging bag made of this packaging film can discharge excess air through the one-way air valve 15. When in use, press the extrusion plates 16 on both sides so that the gas can be discharged from the one-way air valve 15. Then, for safety, the cover 151 can be reinstalled and reset to reduce the air content in the main body 12, so as to better store and use the packaged goods. Example 2

[0031] As Figure 3 shown, on the basis of Example 1, this example provides another packaging film structure. A second LDPE layer 9 is provided below the first aluminized PE layer 3. Both the first LDPE layer 7 and the second LDPE layer 9 are formed by hot melt extrusion coating process. An inner PE layer 10 is provided below the second LDPE layer 9, and an outer PE layer 11 is provided on the first LDPE layer 7, so as to meet the requirements of some outer packaging for structure thickness and softness. Example 3

[0032] As Figure 4 shown, on the basis of Example 1, BOPP material with higher mechanical strength is used. A BOPP layer 17 is provided on the first LDPE layer 7, and a second LDPE layer 9 is provided on the BOPP layer 17, so as to improve the toughness of the packaging bag.

[0033] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present invention, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An aluminized packaging film, characterized in that: It includes a first base PE (1), on which a first aluminum layer (2) is combined. The first base PE (1) and the first aluminum layer (2) form a first aluminized PE layer (3). The first aluminized PE layer (3) is combined with a second aluminized PE layer (4) through composite glue. The structure of the second aluminized PE layer (4) is that the lower layer is a second aluminum layer (5), and on the second aluminum layer (5) is combined a second base PE (6). On the second base, there is a first LDPE layer (7).

2. The aluminized packaging film according to claim 1, wherein: On the first LDPE layer (7) is provided a paper layer (8), and on the paper layer (8) is provided a second LDPE layer (9).

3. The aluminized packaging film according to claim 1, characterized in that: Below the first aluminized PE layer (3) is provided a second LDPE layer (9). Both the first LDPE layer (7) and the second LDPE layer (9) are formed by covering with a hot melt lamination process. Below the second LDPE layer (9) is provided an inner PE layer (10), and on the first LDPE layer (7) is provided an outer PE layer (11).

4. The aluminized packaging film according to claim 1, characterized in that: On the first LDPE layer (7) is provided a BOPP layer (17), and on the BOPP layer (17) is provided a second LDPE layer (9).

5. A packaging bag for an aluminized packaging film, based on the aluminized packaging film according to any one of claims 1-4, characterized in that: It includes a main body part (12) formed by pressing and joining the head and tail of a packaging film layer. On both sides of the main body part (12) are provided side body parts (13) for sealing the space. At the bottom end of the main body part (12) is provided a standing flat bottom (121). Through the upper part of the main body part (12) is provided a handle hole. Above the handle hole, at the top end of the main body part (12) is provided a protruding part (122). On one side of the top end of the main body part (12) is provided a sealing strip (123), and on the other side of the top end of the main body part (12) is provided a serrated opening.

6. The packaging bag of the aluminized packaging film according to claim 5, characterized in that: Sealed and embedded in the handle hole is a handheld part (14). Both sides of the handheld part (14) extend towards the two sides of the main body part (12). At the bottom of the handheld part (14) forms an intermediate platform. On the intermediate platform is installed a one-way air valve (15) connected to the inside of the main body part (12). On the one-way air valve (15) is provided a cover body (151). The connection mode between the cover body (151) and the one-way air valve (15) is a threaded connection.

7. The packaging bag of the aluminized packaging film according to claim 6, characterized in that: On both side surfaces of the main body part (12) are provided pressing plate members (16). The pressing plate members (16) include a connecting cross plate (161) horizontally placed on the main body part (12). At the bottom of the connecting cross plate (161) is fixed a first claw member (162) extending downward.

8. The packaging bag of aluminized packaging film according to claim 7, characterized in that: The pressing plate member (16) further includes second claw members (163) located on both sides of the first claw member (162). The second claw members (163) extend obliquely outwards.

Images