CN215852747U

CN215852747U - Full-biodegradable double-layer reinforced handbag

Info

Publication number: CN215852747U
Application number: CN202121913045.XU
Authority: CN
Inventors: 黎明
Original assignee: Dongguan Lyurui Plastic Technology Co ltd
Current assignee: Dongguan Lyurui Plastic Technology Co ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-02-18
Anticipated expiration: 2031-08-16

Abstract

The utility model discloses a full-biodegradable double-layer reinforced handbag which comprises a front bag piece, a rear bag piece, a front upper folding piece and a rear upper folding piece, wherein the front upper folding piece is formed by downwards folding the upper end of the front bag piece, and the rear upper folding piece is formed by downwards folding the upper end of the rear bag piece; the front bag sheet is connected with the lower end of the front upper folding sheet in a heat sealing way; the lower ends of the rear bag sheet and the rear upper folding sheet are connected in a heat sealing way; the left and right sides of the front bag sheet, the front upper folding sheet, the rear bag sheet and the rear upper folding sheet are connected by heat sealing; the front bag piece, the rear bag piece, the front upper folding piece and the rear upper folding piece sequentially comprise a first PBAT film layer, a first PBAT and PLA blending film layer, a starch and PBAT blending film layer, a second PBAT and PLA blending film layer and a second PBAT film layer from outside to inside. The position of the handle is reinforced by double layers, the handle bag is not easy to break, and the material cost is increased slightly; the handbag has higher texture stiffness and hardness, convenient use, good tensile strength, difficult fracture and very high degradation speed in a soil environment or a humid environment.

Description

Full-biodegradable double-layer reinforced handbag

Technical Field

The utility model relates to the technical field of handbag, in particular to a full-biodegradable double-layer reinforced handbag.

Background

The annual output of plastics in China is 3000 ten thousand tons, and the consumption is more than 6000 ten thousand tons. The annual output of plastics worldwide is 10 hundred million tons, if the annual plastic waste amount of China is calculated according to 15% of the plastic waste amount per year, the annual plastic waste amount of China is more than 1000 million tons, and the proportion of the waste plastics in the garbage accounts for 40%, so that a large amount of waste plastics are buried underground as garbage, and undoubtedly, greater pressure is brought to the originally-lacked arable land. The plastic brings convenience to the life of people and brings difficult-to-collect aftertroubles to the environment, and the disaster of the plastic to the environment is called as 'white pollution'. The handbag does bring convenience to the life of people, but the convenience brings long-term harm. Generally, the hazards to the earth from non-degradable plastic carrying bags include: 1. the plastic handbag has lower recycling value, is easy to scatter in urban streets and tourist areas in the using process, has stable plastic structure, is not easy to be degraded by natural microorganism bacteria, and is not separated in the natural environment for a long time. This means that the waste plastic carrying handle, if not recycled, will become a pollutant in the environment and permanently exist and accumulate continuously, causing great harm to the environment. 2. Affecting the agricultural development. The waste plastic handbag is mixed in soil and continuously accumulated, and can influence crops to absorb nutrients and moisture. 3. The waste plastic handbag discarded on land or in a water body is swallowed by animals as food, resulting in death of the animals. 4. The plastic handbag occupies a large amount of land along with the landfill, and the occupied land can not be recovered for a long time, so that the sustainable utilization of the land is influenced. If the plastic handbag entering the household garbage is buried, the plastic handbag is not degraded within 200 years.

At present, a plurality of countries adopt a method of burning (thermal energy regeneration) or reprocessing (product regeneration) to treat waste plastics. Harmful smoke and dust and toxic gas generated by incineration can cause pollution to the atmospheric environment. In the face of the increasingly serious white pollution problem, people hope to find a handbag substitute which can replace the performance of the existing plastic handbag without causing white pollution, so that the degradable handbag can be produced at once. The degradable handbag with the novel function is characterized in that after the degradable handbag reaches a certain service life and is discarded, the degradable handbag is degraded due to the obvious change of the chemical structure of the degradable handbag under a specific environmental condition, and the degradable handbag is harmless or less harmful to the natural environment.

With the development of technology, the research and application of PBAT and other degradable plastics are increasing, and the use of the degradable handbag is now required in many countries, but the existing degradable handbag has the following defects: firstly, the strength of the handle position of the handbag is not strong enough, the handbag is easy to be broken, when the whole thickness of the handbag is increased, the weight of the handbag is too heavy, and the material cost of the handbag is multiplied; secondly, the handbag is too soft in texture, low in stiffness and hardness and inconvenient to use; thirdly, the handbag has poor tensile strength and is easy to break; fourthly, the degradation speed in the soil environment or the humid environment is still slow, and the requirement of the degradation period is difficult to achieve.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a full-biodegradable double-layer reinforced handbag according to the defects of the prior art, wherein the upper end of a front bag piece of the handbag is downwards folded to form a front upper folding piece, and the upper end of a rear bag piece of the handbag is downwards folded to form a rear upper folding piece, so that the handle position of the handbag is double-layer reinforced, the handbag is not easy to be broken by pulling, and the material cost is less increased; meanwhile, the handbag has higher texture stiffness and hardness, is convenient to use, has good tensile strength, is not easy to break, and has very high degradation speed in a soil environment or a humid environment.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a full-biodegradable double-layer reinforced handbag comprises a front bag piece, a rear bag piece, a front upper folding piece and a rear upper folding piece, wherein the front upper folding piece is formed by downwards folding the upper end of the front bag piece, and the rear upper folding piece is formed by downwards folding the upper end of the rear bag piece; the front bag sheet is connected with the lower end of the front upper folding sheet in a heat sealing way, and the joint of the front bag sheet and the lower end of the front upper folding sheet is provided with a front heat sealing strip; the lower ends of the rear bag sheet and the rear upper folding sheet are connected in a heat-sealing mode, and a rear heat sealing strip is arranged at the joint of the rear bag sheet and the lower ends of the rear upper folding sheet; the left and right sides of the front bag sheet, the front upper folding sheet, the rear bag sheet and the rear upper folding sheet are connected in a heat sealing way, and the joints are provided with heat sealing edges; the front bag piece, the rear bag piece, the front upper folding piece and the rear upper folding piece sequentially comprise a first PBAT film layer, a first PBAT and PLA blending film layer, a starch and PBAT blending film layer, a second PBAT and PLA blending film layer and a second PBAT film layer from outside to inside.

Preferably, the thickness of the first PBAT film layer is 6-10 μm, the thickness of the first PBAT and PLA blending film layer is 3-7 μm, the thickness of the starch and PBAT blending film layer is 8-12 μm, the thickness of the second PBAT and PLA blending film layer is 3-7 μm, and the thickness of the second PBAT film layer is 6-10 μm.

Preferably, the upper end of the front bag piece, the upper end of the rear bag piece, the middle part of the front upper folding piece and the middle part of the rear upper folding piece are respectively provided with a handle hole.

Preferably, the lower end of the front bag piece is upwards turned with a front lower folding piece, the lower end of the rear bag piece is upwards turned with a rear lower folding piece, and the front lower folding piece is integrally connected with the upper end of the rear lower folding piece; the left and right sides of the front bag sheet, the front lower folding sheet, the rear bag sheet and the rear lower folding sheet are connected in a heat sealing mode, and the joints of the front bag sheet, the front lower folding sheet, the rear bag sheet and the rear lower folding sheet are provided with heat sealing edges.

The utility model has the beneficial effects that: firstly, because the upper end of the front bag piece is downwards folded with the front upper folding piece and the upper end of the rear bag piece is downwards folded with the rear upper folding piece, the handle position of the handbag is reinforced in a double-layer way, the handbag is not easy to be broken, and the material cost is slightly increased; secondly, the outermost layer and the innermost layer of the handbag are PBAT film layers, so that the overall toughness of the handbag can be improved, the overall tensile strength of the handbag is very good, and the handbag is not easy to break; thirdly, as the middle layer of the handbag is the starch and PBAT blended film layer, the biodegradability of the handbag can be greatly improved, and the degradation speed in a soil environment or a humid environment is very high; and fourthly, because PBAT and PLA blending film layers are respectively arranged between the PBAT film layers of the outermost layer and the innermost layer and the middle layer, the PBAT and the PLA both have good degradability, the PBAT tensile strength is good, and the PLA has higher hardness, so that the handbag has higher integral stiffness and hardness and is convenient to use.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the side folding process state of the present invention.

Fig. 3 is a cross-sectional view of the handbag of the present invention.

In the figure: 101. a front bag sheet; 102. a back bag sheet; 103. a front upper fold fin; 104. a rear upper folding sheet; 105. front heat sealing; 106. post-heat sealing; 107. performing hot edge sealing; 108. a handle aperture; 109. a front lower fold; 110. a rear lower fold piece; 1. a first PBAT membrane layer; 2. a first PBAT and PLA blend film layer; 3. a starch and PBAT blend film layer; 4. a second PBAT and PLA blend film layer; 5. a second PBAT membrane layer.

Detailed Description

The structural and operational principles of the present invention are explained in further detail below with reference to the accompanying drawings.

As shown in fig. 1-3, the present invention is a fully biodegradable double-layer reinforced handbag, comprising a front bag sheet 101, a rear bag sheet 102, a front upper folding sheet 103 and a rear upper folding sheet 104, wherein the front upper folding sheet 103 is formed by folding the upper end of the front bag sheet 101 downwards, and the rear upper folding sheet 104 is formed by folding the upper end of the rear bag sheet 102 downwards; the lower ends of the front bag sheet 101 and the front upper folding sheet 103 are connected in a heat sealing way, and the joint of the front bag sheet and the front upper folding sheet is provided with a front heat sealing strip 105; the lower ends of the rear bag piece 102 and the rear upper folding piece 104 are connected in a heat sealing way, and the joint of the rear bag piece and the rear upper folding piece is provided with a rear heat sealing strip 106; the left and right sides of the front bag sheet 101, the front upper folding sheet 103, the rear bag sheet 102 and the rear upper folding sheet 104 are connected by heat sealing, and the joint is provided with a heat sealing edge 107; the front bag piece 101, the rear bag piece 102, the front upper folding piece 103 and the rear upper folding piece 104 sequentially comprise a first PBAT film layer 1, a first PBAT and PLA blending film layer 2, a starch and PBAT blending film layer 3, a second PBAT and PLA blending film layer 4 and a second PBAT film layer 5 from outside to inside. The thickness of the first PBAT film layer 1 is 6-10 mu m, and preferably 8 mu m; the thickness of the first PBAT and PLA blended film layer 2 is 3-7 μm, preferably 5 μm; the thickness of the starch and PBAT blending film layer 3 is 8-12 μm, preferably 10 μm; the thickness of the second PBAT and PLA blended film layer 4 is 3-7 μm, preferably 5 μm; the thickness of the second PBAT film layer 5 is 6-10 μm, and preferably 8 μm.

As shown in fig. 3, in the first PBAT and PLA blended film layer 2, PBAT (a copolymer of butylene adipate and butylene terephthalate) accounts for 75% of the weight of the film layer, and PLA (polylactic acid) accounts for 25% of the weight of the film layer; in the second PBAT and PLA blended film layer 4, PBAT accounts for 75 percent of the weight of the film layer, and PLA (polylactic acid) accounts for 25 percent of the weight of the film layer, so that the stiffness and the hardness of the handbag can be greatly improved; in the starch and PBAT blended film layer 3, the starch accounts for 20% of the weight of the film layer, and the PBAT accounts for 80% of the weight of the film layer.

As shown in fig. 1, handle holes 108 are respectively formed in the upper end of the front bag piece 101, the upper end of the rear bag piece 102, the middle of the front upper flap 103, and the middle of the rear upper flap 104.

As shown in fig. 2, a front lower flap 109 is folded upwards at the lower end of the front bag sheet 101, a rear lower flap 110 is folded upwards at the lower end of the rear bag sheet 102, and the front lower flap 109 and the upper end of the rear lower flap 110 are integrally connected; the left and right sides of the front bag sheet 101, the front lower folding sheet 109, the back bag sheet 102 and the back lower folding sheet 110 are connected by heat sealing, and the joint is provided with a heat sealing edge 107.

The processing method of the full-biodegradable double-layer reinforced handbag comprises the following steps: firstly, preparing materials of five film layers; then, extruding and molding the materials of the five film layers in an extruder, and combining the five film layers together at a die head of the extruder in a molten state at 130-140 ℃ to form a strip-shaped film; then, folding one side end of the strip-shaped film to form a front upper folding piece, folding the other side end of the strip-shaped film to form a rear upper folding piece, connecting the front upper folding piece with the strip-shaped film in a heat sealing manner, and connecting the rear upper folding piece with the strip-shaped film in a heat sealing manner; then, the middle part of the strip-shaped film is folded to form a front bag piece, a front lower folding piece, a rear bag piece and a rear lower folding piece respectively; then, sequentially cutting the strip-shaped films into handbag bodies; and finally, the left side and the right side of the handbag are connected in a heat sealing way to form a single full-biodegradable double-layer reinforced handbag.

The above description is only a preferred embodiment of the present invention, and all the minor modifications, equivalent changes and modifications made to the above embodiment according to the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a handbag is strengthened to full biodegradable bilayer which characterized in that: the bag comprises a front bag sheet, a rear bag sheet, a front upper folding sheet and a rear upper folding sheet, wherein the front upper folding sheet is formed by downwards folding the upper end of the front bag sheet, and the rear upper folding sheet is formed by downwards folding the upper end of the rear bag sheet; the front bag sheet is connected with the lower end of the front upper folding sheet in a heat sealing way, and the joint of the front bag sheet and the lower end of the front upper folding sheet is provided with a front heat sealing strip; the lower ends of the rear bag sheet and the rear upper folding sheet are connected in a heat-sealing mode, and a rear heat sealing strip is arranged at the joint of the rear bag sheet and the lower ends of the rear upper folding sheet; the left and right sides of the front bag sheet, the front upper folding sheet, the rear bag sheet and the rear upper folding sheet are connected in a heat sealing way, and the joints are provided with heat sealing edges; the front bag piece, the rear bag piece, the front upper folding piece and the rear upper folding piece sequentially comprise a first PBAT film layer, a first PBAT and PLA blending film layer, a starch and PBAT blending film layer, a second PBAT and PLA blending film layer and a second PBAT film layer from outside to inside.

2. The fully biodegradable, double reinforced handbag according to claim 1, characterized in that: the thickness of first PBAT rete is 6 ~ 10 mu m, the thickness of first PBAT and PLA blend rete is 3 ~ 7 mu m, the thickness of starch and PBAT blend rete is 8 ~ 12 mu m, the thickness of second PBAT and PLA blend rete is 3 ~ 7 mu m, the thickness of second PBAT rete is 6 ~ 10 mu m.

3. The fully biodegradable, double reinforced handbag according to claim 2, characterized in that: the thickness of first PBAT rete is 8 μm, the thickness of first PBAT and PLA blend film layer is 5 μm, the thickness of starch and PBAT blend film layer is 10 μm, the thickness of second PBAT and PLA blend film layer is 5 μm, the thickness of second PBAT film layer is 8 μm.

4. The fully biodegradable, double reinforced handbag according to claim 1, characterized in that: handle holes are respectively formed in the upper end of the front bag piece, the upper end of the rear bag piece, the middle of the front upper folding piece and the middle of the rear upper folding piece.

5. The fully biodegradable, double reinforced handbag according to claim 1, characterized in that: the lower end of the front bag piece is upwards folded with a front lower folding piece, the lower end of the rear bag piece is upwards folded with a rear lower folding piece, and the front lower folding piece is integrally connected with the upper end of the rear lower folding piece; the left and right sides of the front bag sheet, the front lower folding sheet, the rear bag sheet and the rear lower folding sheet are connected in a heat sealing mode, and the joints of the front bag sheet, the front lower folding sheet, the rear bag sheet and the rear lower folding sheet are provided with heat sealing edges.