BMC (bulk molding compound) and DMC (dimethyl carbonate) bulk material packaging bag

Abstract

The BMC and DMC bulk material packaging bag comprises a bag body, an exhaust pipe and a control valve, a first sealing strip and a second sealing strip which are oppositely arranged are arranged at an opening of the bag body, and the first sealing strip and the second sealing strip are detachably connected in a matched mode so as to seal the opening of the bag body; the air suction pipe is arranged on the bag body, one end of the air suction pipe is located in the bag body, the other end of the air suction pipe is located outside the bag body, and the air suction pipe is used for sucking air in the bag body; the control valve is arranged on the exhaust pipe, located outside the bag body and used for controlling on-off of the exhaust pipe. The sealing performance of the packaging bag is remarkably improved, external moisture and impurities are effectively isolated, the quality of the lump materials is guaranteed, due to the fact that the sealing performance of the packaging bag is better, the quality stability of the lump materials in the storage process is improved, and the storage life of products is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing bag technical field, concretely relates to a BMC and DMC dough packing bag. BACKGROUND

[0002] BMC (Bulk Molding Compound) and DMC (Dough Molding Compound) dough are a kind of high-performance composite materials widely used in various industrial fields.In the process of transportation and storage, these doughs need special packaging to protect them from the influence of external environment.The existing dough packaging bag can meet the demand to some extent, but the sealing performance is poor, so that the dough may be affected by moisture and impurities in the air during packaging.In addition, the air remaining in the sealed bag after the packing bag is sealed still affects the dough, resulting in poor transportation reliability of the dough. SUMMARY

[0003] The utility model aims at at least one of the technical problems in the related art to some extent.

[0004] To this end, an embodiment of the utility model provides a BMC and DMC dough packaging bag.

[0005] The BMC and DMC dough packaging bag provided by the utility model comprises a bag body, an air extraction pipe and a control valve, the opening of the bag body is provided with a first sealing strip and a second sealing strip arranged oppositely, the first sealing strip and the second sealing strip are connected in a separable manner to seal the opening of the bag body, the air extraction pipe is arranged on the bag body, one end of the air extraction pipe is located in the bag body, the other end of the air extraction pipe is located outside the bag body, and the air extraction pipe is used to extract air in the bag body, and the control valve is arranged on the air extraction pipe and located outside the bag body to control the on-off of the air extraction pipe.

[0006] In some embodiments, each of the first sealing strip and the second sealing strip is a flexible sealing strip.

[0007] In some embodiments, the first sealing strip has a sealing groove with an opening facing the second sealing strip, and the second sealing strip has a protrusion arranged towards the first sealing strip, and the protrusion is connected in a separable manner with the sealing groove.

[0008] In some embodiments, the BMC and DMC dough packaging bag provided by the utility model comprises a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are connected with the air extraction pipe, and the first clamping plate and the second clamping plate are oppositely arranged on the two sides of the bag body.

[0009] In some embodiments, the first clamping plate, the second clamping plate and the air extraction pipe are made of flexible material.

[0010] In some embodiments, the bag body is provided with a plurality of reinforcing ribs on the outer side, the reinforcing ribs are arranged along the circumference of the bag body, and the reinforcing ribs extend along the height direction of the bag body.

[0011] In some embodiments, the bag body is a transparent bag body.

[0012] In some embodiments, the bag body is made of a multi-layer composite material, and the bag body comprises, from the outside to the inside, a high barrier layer, a permeation prevention layer and a moisture-proof layer.

[0013] In some embodiments, the high barrier layer is EVOH.

[0014] In some embodiments, the permeation prevention layer is PVDF.

[0015] Compared with traditional packaging bags, the sealing performance of the packaging bag of the embodiment of the utility model is significantly improved, the external moisture and impurities are effectively isolated, and the quality of the mass material is guaranteed. By extracting the air in the bag, the influence of the humidity and oxygen in the air on the mass material is reduced, which is very helpful for maintaining the chemical stability and physical performance of the mass material. Since the air in the bag is extracted, the damage caused by vibration and impact during transportation is reduced, and the transportation reliability is improved. The design of the control valve enables the user to conveniently and quickly extract air and seal, thereby improving the packaging efficiency. Since the sealing performance of the packaging bag is better, the quality stability of the mass material during storage is improved, and the storage period of the product is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the packaging bag of the embodiment of the utility model.

[0017] Figure 2 is a schematic view of the first sealing strip of the embodiment of the utility model.

[0018] Figure 3 is Figure 2 an enlarged schematic view of part A in FIG.

[0019] Figure 4 is a schematic view of the second sealing strip of the embodiment of the utility model.

[0020] Figure 5 is Figure 4 an enlarged schematic view of part B in FIG.

[0021] Figure 6 is an installation schematic view of the air extraction pipe of the embodiment of the utility model.

[0022] Figure 7 is a structural schematic view of a bag body of an embodiment of the present application.

[0023] Reference signs:

[0024] 100, packaging bag; 1, bag body; 101, high barrier layer; 102, impermeable layer; 103, moisture-proof layer; 2, first sealing strip; 201, sealing groove; 3, second sealing strip; 301, protrusion; 4, air extraction pipe; 5, control valve; 6, first clamping plate; 7, second clamping plate; 8, reinforcing rib. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0026] As shown in Figures 1 to 7 , the BMC and DMC material packaging bag 100 of the embodiment of the present application comprises a bag body 1, an air extraction pipe 4 and a control valve 5. The opening of the bag body 1 is provided with a first sealing strip 2 and a second sealing strip 3 arranged oppositely, and the first sealing strip 2 and the second sealing strip 3 are connected in a separable and cooperative manner to seal the opening of the bag body 1. The air extraction pipe 4 is arranged on the bag body 1, one end of the air extraction pipe 4 is located in the bag body 1, and the other end of the air extraction pipe 4 is located outside the bag body 1, and the air extraction pipe 4 is used to extract air in the bag body 1. The control valve 5 is arranged on the air extraction pipe 4 and located outside the bag body 1, and is used to control the on-off of the air extraction pipe 4.

[0027] When the packaging bag 100 of the embodiment of the present application is used, the opening of the packaging bag 100 is provided with the first sealing strip 2 and the second sealing strip 3, and the two sealing strips are arranged oppositely at the bag opening and can be connected in a separable and cooperative manner. After the bag body 1 is filled with material, the effective closure of the two sealing strips ensures the sealing of the bag opening and prevents external moisture and impurities from entering. One end of the air extraction pipe 4 is located in the bag body 1, and the other end is located outside the bag body 1. By opening the air extraction pipe 4 through the control valve 5, the air in the bag body 1 can be extracted, the air pressure in the bag is reduced, so that the bag body 1 tightly adheres to the contents, and the influence of air on the material is reduced. The control valve 5 is installed on the air extraction pipe 4 and located outside the bag body 1, and the user can adjust the on-off of the air extraction pipe 4 through the control valve 5 to control the extraction and entry of air in the bag.

[0028] Compared with the traditional packaging bag, the sealing performance of the packaging bag 100 is significantly improved, the external moisture and impurities are effectively isolated, and the quality of the mass is guaranteed. By extracting the air in the bag, the influence of humidity and oxygen in the air on the mass is reduced, which is very helpful for maintaining the chemical stability and physical properties of the mass. Since the air in the bag is extracted, the damage caused by vibration and impact during transportation is reduced, and the transportation reliability is improved. The design of the control valve 5 enables the user to conveniently and quickly perform the air extraction and sealing operation, thereby improving the packaging efficiency. Since the sealing performance of the packaging bag 100 is better, the quality stability of the mass during storage is improved, and the storage period of the product is prolonged.

[0029] In some embodiments, each of the first sealing strip 2 and the second sealing strip 3 is a flexible sealing strip.

[0030] The flexible sealing strip can better fill the tiny gap in the sealing interface, thereby providing a more reliable sealing effect. Due to the characteristics of the flexible material, the sealing strip is not easily damaged when subjected to external force, which reduces the risk of packaging failure caused by damage to the sealing strip. The flexible sealing strip can adapt to the possible slight deformation of the bag opening, and can maintain good sealing effect even if the shape of the bag body 1 changes after loading.

[0031] In some embodiments, the first sealing strip 2 has a sealing groove 201 with an opening facing the second sealing strip 3, and the second sealing strip 3 has a protrusion 301 arranged facing the first sealing strip 2, and the protrusion 301 is detachably connected with the sealing groove 201.

[0032] The sealing groove 201 on the first sealing strip 2 and the protrusion 301 on the second sealing strip 3 form an interlocking mechanism. When the two sealing strips are docked, the protrusion 301 will enter the groove, and through this mechanical interlocking, the two sealing strips can be more firmly connected together. The design of the groove and the protrusion 301 increases the sealing performance of the sealing contact surface, because they can provide more contact points and tighter fitting, thereby improving the overall sealing effect. When it is necessary to open or close the packaging bag 100, the user only needs to align and press the protrusion 301 with the groove, or vice versa, which is generally intuitive and easy to operate.

[0033] In some embodiments, the BMC and DMC mass packaging bag 100 of the utility model embodiment comprises a first clamping plate 6 and a second clamping plate 7, the first clamping plate 6 and the second clamping plate 7 are connected with the air extraction pipe 4, and the first clamping plate 6 and the second clamping plate 7 are oppositely arranged on the two sides of the bag body 1.

[0034] When the suction tube 4 is in operation, the clamping plates can provide additional support to keep the bag body 1 stable during the suction process. The design of the clamping plates can help evenly distribute the pressure during the suction process, preventing the bag body 1 from deforming or being damaged due to excessive local pressure. The clamping plates provide additional structural strength to the packaging bag 100, especially when the bag body 1 is large or the bale is heavy, which can prevent the bag body 1 from being damaged due to its own weight or external impact.

[0035] In some embodiments, the first clamping plate 6, the second clamping plate 7 and the suction tube 4 are made of flexible material.

[0036] The flexible material allows the clamping plates and the suction tube 4 to bend and deform to adapt to different shapes and sizes of bale packaging bags 100, as well as different usage requirements in different environments. Flexible materials generally have better adaptability to temperature changes and impact forces, and can maintain their performance under different storage and transportation conditions. Flexible clamping plates and suction tubes 4 can provide some cushioning when impacted, reducing damage to the bale inside the packaging bag 100.

[0037] In some embodiments, the outer side of the bag body 1 is provided with a plurality of reinforcing ribs 8, which are arranged along the circumference of the bag body 1 and extend along the height direction of the bag body 1.

[0038] The reinforcing ribs 8 significantly improve the strength and rigidity of the packaging bag 100, enabling it to withstand greater loads and protect the internal bale from damage. The reinforcing ribs 8 can withstand long-term use and repeated handling, improving the durability of the packaging bag 100. When impacted, the reinforcing ribs 8 can absorb and distribute the impact force, reducing damage to the bale inside the bag body 1.

[0039] In some embodiments, the bag body 1 is a transparent bag body 1.

[0040] The transparent bag body 1 allows users to directly observe the condition of the internal bale without opening the package, which helps to quickly check the quality and integrity of the bale. The transparent material makes it easy to identify the appearance characteristics of the bale such as color, shape and size, which helps to control the quality during production.

[0041] In some embodiments, the bag body 1 is made of a multi-layer composite material, and the bag body 1 includes a high barrier layer 101, a permeation prevention layer 102 and a moisture-proof layer 103 arranged from outside to inside.

[0042] The packaging bag 100 of the embodiment of the utility model enhances the overall performance by stacking materials with different functions together, and each layer of material provides specific protection characteristics for the packaging bag 100. The main function of the high barrier layer 101 is to prevent external gas (such as oxygen, humidity, etc.) from entering the bag, thereby protecting the internal material from the influence of the external environment. The main function of the moisture-proof layer 103 is to prevent moisture from entering the bag, thereby keeping the material dry and preventing quality problems caused by moisture.

[0043] Optionally, the high barrier layer 101 is EVOH.

[0044] EVOH (ethylene-vinyl alcohol copolymer) is used as the material of the high barrier layer 101, and these materials have excellent gas barrier properties, which can effectively block oxygen, carbon dioxide and other gases.

[0045] Optionally, the high barrier layer 101 is EVOH.

[0046] PVDF is a high-performance thermoplastic fluoropolymer with excellent chemical resistance, weather resistance and high temperature resistance, and also has good barrier properties. PVDF material can effectively block the penetration of moisture, grease, acid and base and other chemicals, and protect the internal material from the influence of the external environment.

[0047] In the description of the utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, structure and operation, and therefore cannot be understood as limiting the utility model.

[0048] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0049] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication or two element mutual action relation, unless another definite limitation.For ordinary skilled person in the art, can understand the specific meaning of above terms in the utility model according to specific circumstances.

[0050] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can be that first and second features directly contact, or first and second features indirectly contact through intermediate medium.Moreover, first feature "over", "above" and "on" second feature can be that first feature is directly above or obliquely above second feature, or just indicates that the horizontal height of first feature is higher than that of second feature.First feature "under", "below" and "under" second feature can be that first feature is directly below or obliquely below second feature, or just indicates that the horizontal height of first feature is less than that of second feature.

[0051] In the utility model, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model.In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.In addition, the skilled person in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0052] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model.The ordinary skilled person in the art can change, modify, replace and modify the above embodiments within the scope of the utility model.

Claims

1. A packaging bag for BMC and DMC bulk materials, characterized in that, include: The bag body (1) has a first sealing strip (2) and a second sealing strip (3) arranged opposite to each other at the opening of the bag body (1). The first sealing strip (2) and the second sealing strip (3) are detachably connected to seal the opening of the bag body (1). An air extraction pipe (4) is provided on the bag body (1). One end of the air extraction pipe (4) is located inside the bag body (1), and the other end of the air extraction pipe (4) is located outside the bag body (1). The air extraction pipe (4) is used to extract air from the bag body (1). and Control valve (5), which is located on the suction pipe (4) and outside the bag body (1), is used to control the opening and closing of the suction pipe (4); It includes a first clamping plate (6) and a second clamping plate (7), both of which are connected to the air extraction pipe (4). The first clamping plate (6) and the second clamping plate (7) are arranged opposite to each other on both sides of the bag body (1). The clamping plate (6) evenly distributes the pressure during the air extraction process, preventing the bag body (1) from deforming or being damaged due to excessive local pressure, and providing additional structural strength to the bag body (1).

2. The BMC and DMC bulk material packaging bag according to claim 1, characterized in that, Each of the first sealing strip (2) and the second sealing strip (3) is a flexible sealing strip.

3. The BMC and DMC bulk material packaging bag according to claim 2, characterized in that, The first sealing strip (2) has a sealing groove (201) with an opening facing the second sealing strip (3), and the second sealing strip (3) has a protrusion (301) facing the first sealing strip (2), the protrusion (301) being detachably connected to the sealing groove (201).

4. The BMC and DMC bulk material packaging bag according to claim 1, characterized in that, The first clamping plate (6), the second clamping plate (7), and the air extraction pipe (4) are all made of flexible material.

5. The BMC and DMC bulk material packaging bag according to claim 1, characterized in that, The outer side of the bag body (1) is provided with a plurality of reinforcing ribs (8), which are arranged at intervals along the circumference of the bag body (1) and extend along the height direction of the bag body (1).

6. The BMC and DMC bulk material packaging bag according to claim 1, characterized in that, The bag (1) is a transparent bag (1).

7. The BMC and DMC bulk material packaging bag according to claim 6, characterized in that, The bag body (1) is made of multi-layer composite material, and the bag body (1) includes a high barrier layer (101), an impermeable layer (102) and a moisture-proof layer (103) arranged sequentially from the outside to the inside.

8. The BMC and DMC bulk material packaging bag according to claim 7, characterized in that, The high-barrier layer (101) is EVOH.

9. The BMC and DMC bulk material packaging bag according to claim 7, characterized in that, The impermeable layer (102) is PVDF.

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