Plastic composite film bag for packaging

Abstract

The utility model provides a plastic composite film bag for packaging, and belongs to the technical field of composite film bags. The plastic composite film bag for packaging comprises a main body and a sealing mechanism, the main body comprises a film bag, a bag opening is formed in the upper end of the film bag, folding seams are arranged on the two sides of the outer portion of the film bag, the sealing mechanism comprises a first clamping strip and a second clamping strip, and the first clamping strip and the second clamping strip are arranged on the two sides of the outer portion of the bag opening respectively. Rotating rods are rotationally connected to the interiors of the first clamping strip and the second clamping strip through bearings correspondingly, a first mounting strip and a second mounting strip are arranged outside the pair of rotating rods in a sleeving mode correspondingly, sealing strips are arranged on the adjacent sides of the first mounting strip and the second mounting strip correspondingly, and mounting cavities are formed in the first mounting strip and the second mounting strip correspondingly; and clamping blocks are movably inserted into the pair of mounting cavities, clamping grooves are formed in the positions, close to the clamping blocks, of the interior of the first mounting strip and the interior of the second mounting strip, and one end of each clamping block extends into the corresponding clamping groove and is connected with the corresponding clamping groove in a clamped mode.

Description

Technical Field

[0001] The utility model relates to the technical field of composite film bags, in particular to a plastic composite film bag for packaging. Background Art

[0002] Composite film refers to a multi-layered film formed by combining various plastics with paper, metal or other materials through lamination, extrusion coating, co-extrusion and other process technologies. Composite film is generally composed of substrate, lamination adhesive, barrier material, heat sealing material, printing and protective layer coating, etc. Composite film bags are widely used in daily chemicals, food, personal care products, pet food and other fields. In order to protect the contents to the greatest extent, fully extend the shelf life and effectiveness of the contents, and ensure the display effect of the finished product appearance.

[0003] For example, a Chinese patent with announcement number CN210792376U discloses an anti-counterfeiting composite film bag for packaging, including a coating layer and a watermark layer, a lower film sheet is arranged above the coating layer, and a color-changing ink layer is arranged above the lower film sheet, a composite middle layer is arranged above the color-changing ink layer, and a watermark layer is arranged above the composite middle layer, an upper film sheet is arranged above the watermark layer, and a protective film is arranged above the upper film sheet. Compared with the existing common composite films, the anti-counterfeiting composite film bag for packaging has greatly improved the performance of the entire device while increasing the structure. The improved composite film has better pulling ability during use, and has an anti-counterfeiting structure inside the composite film to avoid the appearance of fakes and high-imitation products, effectively meeting people's use needs, and is provided with a watermark layer, an upper film sheet and a protective film. The watermark layer can be used to achieve the anti-counterfeiting ability of the composite film, and its watermark can prevent imitation of other composite films.

[0004] The technical solution recorded in this scheme can make different colors visible at different angles during the use of the composite film through the color-changing ink layer, and cooperate with the watermark layer to achieve the anti-counterfeiting ability of the composite film, and the watermark can prevent other composite films from imitating. However, during use, the opening of the composite film belt cannot be quickly double-sealed, which reduces the practicality and sealing of the composite film bag. Utility Model Content

[0005] The utility model aims to provide a plastic composite film bag for packaging, so as to solve the problem in the above-mentioned background technology that the opening of the composite film strip cannot be double-sealed.

[0006] The utility model is achieved in this way:

[0007] A plastic composite film bag for packaging, comprising a main body and a sealing mechanism, the main body comprising a film bag, the upper end of the film bag being provided with a bag opening, and folds being provided on both sides of the exterior of the film bag, the sealing mechanism comprising a first clamping strip and a second clamping strip, the first clamping strip and the second clamping strip being respectively arranged on both sides of the exterior of the bag opening, and the interiors of the first clamping strip and the second clamping strip being rotatably connected to a rotating rod through bearings, a pair of the rotating rods being respectively provided with a first mounting strip and a second mounting strip on the exterior, a sealing strip being provided on adjacent sides of the first mounting strip and the second mounting strip, and an mounting cavity being provided inside the first mounting strip and the second mounting strip, a pair of the mounting cavities being distributed diagonally, and a clamping block being movably inserted inside the pair of the mounting cavities, a clamping groove being provided inside the first mounting strip and the second mounting strip near the clamping block, one end of the clamping block extending to the interior of the clamping groove and being clamped and connected with the clamping groove.

[0008] Furthermore, a second spring is installed at one end of the clamping block away from the clamping slot, and one end of the second spring is fixedly connected to the inner wall of the installation cavity.

[0009] The beneficial effect of adopting the above further solution is that, by arranging a second spring at one end of the clamping block, the clamping block can be easily telescopically moved inside the installation cavity under the elastic force of the second spring.

[0010] Furthermore, the upper ends of the first mounting bar and the second mounting bar are both provided with a slide groove near the connecting cavity, the interior of the slide groove is slidably connected with a connecting block, and the bottom end of the connecting block is fixedly connected to the outside of the clamping block.

[0011] The beneficial effect of adopting the above further scheme is that through the coordinated use of the slide groove and the connecting block, and the bottom end of the connecting block is connected to the clamping block, when the connecting block moves inside the slide groove, it is easy to drive the clamping block to move with the connecting block.

[0012] Furthermore, a push block is installed at the upper end of the connecting block, and a pair of protrusions are installed at the upper end of the push block, and the pair of protrusions are both configured to be semi-cylindrical.

[0013] The beneficial effect of adopting the above further solution is that by arranging a push block at the upper end of the connecting block, the connecting block can be easily moved when the push block is pushed, and by arranging a protrusion at the upper end of the push block, the friction between the push block and the finger is increased.

[0014] Furthermore, both ends of the second clamping strip are provided with slots, and rods are movably inserted into the slots. A pair of the rods are fixedly connected to the first clamping strip at one end away from the slots.

[0015] The beneficial effect of adopting the above further scheme is that, through the coordinated use of the insertion rod and the slot, when the insertion rod is inserted into the slot, the first clamping strip and the second clamping strip are easily fitted together, thereby preliminarily sealing the bag opening of the film bag.

[0016] Furthermore, the second clamping strip is provided with through holes on both sides of the outside close to the slot, and a pair of the insertion rods are provided with connecting cavities inside, and a limit block is movably inserted inside the connecting cavity, and one end of the limit block extends through the through hole to the outside and is snap-connected with the through hole.

[0017] The beneficial effect of adopting the above further solution is that by setting a limit block, since the limit block is movable inside the connecting cavity, when one end of the limit block is inserted into the through hole, it is easy to realize the limitation of the position between the insertion rod and the slot.

[0018] Furthermore, a first spring is installed on the inner wall of the connecting cavity, and the first spring is fixedly connected between an end away from the inner wall of the connecting cavity and the limiting block.

[0019] The beneficial effect of adopting the above further solution is that, by arranging a first spring at one end of the insertion rod, the insertion rod can be easily telescopically moved inside the connecting cavity under the elastic force of the first spring.

[0020] Furthermore, the film bag comprises a PET base film layer, a protective layer is embedded inside the PET base film layer, a modified PVA layer is bonded to the outside of the PET base film layer, and a wear-resistant layer is provided on the outside of the film bag.

[0021] The beneficial effect of adopting the above further scheme is that by setting a PET base film layer, the film bag has high transparency, tear resistance and temperature resistance; by setting a protective layer, the film bag itself is protected while protecting the products inside the film bag; by setting a modified PVA layer, the film bag has gas barrier properties, transparency and tensile resistance.

[0022] The beneficial effects of the utility model are as follows: the utility model obtains a plastic composite film bag for packaging through the above design. The plastic composite film bag for packaging is provided with a first clamping strip and a second clamping strip. When the insertion rod provided with the first clamping strip is inserted into the interior of the slot, one end of the limit block inside the insertion rod is squeezed with the inner wall of the slot during the insertion process, so that the limit block enters the interior of the connecting cavity under the elastic force of the first spring. When the limit block slides to the through hole, the squeezing force disappears, so that the through hole is passed under the elastic force of the first spring, so that the position between the insertion rod and the slot is limited, the connection between the first clamping strip and the second clamping strip is realized, the bag opening of the film bag is initially sealed, the push block is pushed to realize the movement of the connecting block, and the card block is driven to move into the interior of the installation cavity with the connecting block, and then the rotating rod is provided to facilitate the rotation of the first installation strip and the second installation strip, and then the first installation strip and the second installation strip are fitted, and the push block is loosened, so that one end of the card block is placed in the interior of the corresponding card slot under the elastic force of the second spring, and the bag opening of the film bag is sealed again under the action of the sealing strip on the adjacent side of the first installation strip and the second installation strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a plastic composite film bag for packaging provided by the utility model;

[0025] Figure 2 A schematic diagram of a partially exploded three-dimensional structure of a plastic composite film bag for packaging provided by the utility model;

[0026] Figure 3 A partial three-dimensional cross-sectional structural schematic diagram of a first mounting strip and a second mounting strip of a plastic composite film bag for packaging provided by the utility model;

[0027] Figure 4 A schematic diagram of a partial top section structure of a first clamping strip and a second clamping strip of a plastic composite film bag for packaging provided by the utility model;

[0028] Figure 5 The utility model is a schematic diagram of an exploded three-dimensional structure of a film bag of a plastic composite film bag for packaging.

[0029] In the figure: 100, main body; 1001, film bag; 100101, PET base film layer; 100102, protective layer; 100103, modified PVA layer; 100104, wear-resistant layer; 1002, bag opening; 1003, fold; 200, sealing mechanism; 2001, first clamping strip; 2002, insertion rod; 2003, connecting cavity; 2004, first spring; 2005, limit block; 2006, second clamping strip; 2007, slot; 2008, through hole; 2009, rotating rod; 2010, first mounting strip; 2011, second mounting strip; 2012, mounting cavity; 2013, clamping block; 2014, clamping slot; 2015, second spring; 2016, connecting block; 2017, slide groove; 2018, push block; 2019, protrusion. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. Embodiment 1

[0032] The utility model provides the following technical solutions: Figure 1-Figure 5As shown, a plastic composite film bag for packaging includes a main body 100 and a sealing mechanism 200. The main body 100 includes a film bag 1001. The upper end of the film bag 1001 is provided with a bag opening 1002, and both sides of the outside of the film bag 1001 are provided with folds 1003. The sealing mechanism 200 includes a first clamping strip 2001 and a second clamping strip 2006. The first clamping strip 2001 and the second clamping strip 2006 are respectively arranged on both sides of the outside of the bag opening 1002, and the insides of the first clamping strip 2001 and the second clamping strip 2006 are rotatably connected to a rotating rod 2009 through a bearing, and the outsides of the pair of rotating rods 2009 are respectively covered with a first mounting plate. The first mounting strip 2010 and the second mounting strip 2011 are provided with sealing strips on adjacent sides of the first mounting strip 2010 and the second mounting strip 2011, and the first mounting strip 2010 and the second mounting strip 2011 are provided with mounting cavities 2012 inside, and the pair of mounting cavities 2012 are distributed diagonally, and the insides of the pair of mounting cavities 2012 are movably inserted with card blocks 2013, and the insides of the first mounting strip 2010 and the second mounting strip 2011 are provided with card slots 2014 near the card blocks 2013, and one end of the card block 2013 extends to the inside of the card slot 2014 and is engaged with the card slot 2014. The bag opening 1002 is arranged to facilitate placing products inside the film bag 1001. By setting the fold 1003, when the film bag 1001 is filled with products, the internal space of the film bag 1001 can be slightly increased. By setting the first clamp 2001 and the second clamp 2006, when the first clamp 2001 and the second clamp 2006 are tightly fitted, the bag opening 1002 of the film bag 1001 is preliminarily sealed. By the coordinated use of the clamp block 2013 and the clamp groove 2014, when the clamp block 2013 is placed inside the installation cavity 2012, the first clamp 2001 and the second clamp 2006 are connected and rotated internally. Rod 2009, and the first mounting strip 2010 and the second mounting strip 2011 are mounted on the outside of the rotating rod 2009, and the first mounting strip 2010 and the second mounting strip 2011 are rotated to make the first mounting strip 2010 and the second mounting strip 2011 fit together, at this time, the card block 2013 is restored to its original position, and one end of the card block 2013 is inserted into the interior of the card slot 2014, thereby realizing the connection and fixation between the first mounting strip 2010 and the second mounting strip 2011, and the sealing strips installed on the adjacent sides of the first mounting strip 2010 and the second mounting strip 2011 are squeezed and fitted together, and the bag opening 1002 of the membrane bag 1001 is sealed again. Embodiment 2

[0033] Reference Figure 1-Figure 5As shown, the card block 2013 is installed with a second spring 2015 at one end away from the card slot 2014, and one end of the second spring 2015 is fixedly connected to the inner wall of the installation cavity 2012. The upper ends of the first installation strip 2010 and the second installation strip 2011 are both provided with a slide groove 2017 near the connecting cavity 2003. The interior of the slide groove 2017 is slidably connected with a connecting block 2016. The bottom end of the connecting block 2016 is fixedly connected to the outside of the card block 2013. The upper end of the connecting block 2016 is installed with a push block 2018. The upper end of the push block 2018 is installed with a pair of protrusions 2019. The pair of protrusions 2019 are both set to be semi-cylindrical. A push block 2018 is provided at the upper end of 016. When the push block 2018 is pushed, the movement of the connecting block 2016 is facilitated. At the same time, a protrusion 2019 is provided at the upper end of the push block 2018 to increase the friction between the push block 2018 and the finger. The slide groove 2017 and the connecting block 2016 are used in coordination, and the bottom end of the connecting block 2016 is connected to the clamping block 2013. When the connecting block 2016 moves inside the slide groove 2017, it is convenient to drive the clamping block 2013 to move telescopically inside the installation cavity 2012 under the elastic force of the second spring 2015. Slots 2007 are provided inside both ends of the second clamping strip 2006. The slots 2007 are provided inside the second clamping strip 2006. 07 is provided with an insert rod 2002 in an internal movable manner, and a pair of insert rods 2002 are fixedly connected to the first clamping strip 2001 at one end away from the inside of the slot 2007, and the second clamping strip 2006 is provided with through holes 2008 on both sides of the outside close to the slot 2007, and a connecting cavity 2003 is provided inside the pair of insert rods 2002, and a limit block 2005 is provided in the internal movable manner of the connecting cavity 2003, and one end of the limit block 2005 passes through the through hole 2008 and extends to the outside, and is connected by a snap connection with the through hole 2008, and the inner wall of the connecting cavity 2003 is installed with a first spring 2004, and the first spring 2004 is provided at the inner wall away from the inner wall of the connecting cavity 2003. One end of the limit block 2005 is fixedly connected with the limit block 2005, and through the cooperation of the insertion rod 2002 and the slot 2007, after the insertion rod 2002 is inserted into the slot 2007, one end of the limit block 2005 inside the insertion rod 2002 is squeezed against the inner wall of the slot 2007 during the insertion process, so that the limit block 2005 enters the interior of the connecting cavity 2003 under the elastic force of the first spring 2004. When the limit block 2005 slides to the through hole 2008, the squeezing force disappears, so that the limit block 2005 passes through the through hole 2008 under the elastic force of the first spring 2004, so that the position between the insertion rod 2002 and the slot 2007 is limited. Embodiment 3

[0034] Reference Figure 1-Figure 5As shown, the film bag 1001 includes a PET base film layer 100101, a protective layer 100102 is embedded inside the PET base film layer 100101, and a modified PVA layer 100103 is bonded to the outside of the PET base film layer 100101, and a wear-resistant layer 100104 is provided on the outside of the film bag 1001. By providing the PET base film layer 100101, the film bag 1001 has high transparency, tear resistance and temperature resistance. By providing the protective layer 100102, the film bag 1001 itself is protected while the product inside the film bag 1001 is protected. By providing the modified PVA layer 100103, the film bag 1001 has gas barrier properties, transparency and tensile resistance.

[0035] Specifically, the working principle of the plastic composite film bag for packaging is as follows: when in use, by setting the bag mouth 1002, it is convenient to place the product inside the film bag 1001; by setting the fold 1003, when the film bag 1001 is filled with products, the internal space of the film bag 1001 can be slightly increased; by setting the PET base film layer 100101, the film bag 1001 has high transparency, tear resistance and temperature resistance; by setting the protective layer 100102, the film bag 1001 itself is protected while the product inside the film bag 1001 is protected; by setting the modified PVA layer 100103, the film bag 1001 has gas barrier properties, transparency and tensile resistance. When taking out the film bag 1001, the film bag 1001 has high transparency, tear resistance and temperature resistance. When a portion of the products are put into the container and the remaining products are sealed and stored, the rod 2002 and the slot 2007 are used in combination. After the rod 2002 is inserted into the slot 2007, one end of the limit block 2005 inside the rod 2002 is squeezed against the inner wall of the slot 2007 during the insertion process, so that the limit block 2005 enters the interior of the connecting cavity 2003 under the elastic force of the first spring 2004. When the limit block 2005 slides to the through hole 2008, the squeezing force disappears, so that the limit block 2005 passes through the through hole 2008 under the elastic force of the first spring 2004, so that the position between the rod 2002 and the slot 2007 is limited, so that the first clamp 2001 and the second clamp The second spring 2015 is used to push the card block 2013 into the installation cavity 2012, and the card block 2013 is driven by the second spring 2015 to move into the installation cavity 2012. The strip 2001 and the second clamp strip 2006 are internally rotated to connect the rotating rod 2009, and the first mounting strip 2010 and the second mounting strip 2011 are externally mounted on the rotating rod 2009. The first mounting strip 2010 and the second mounting strip 2011 are rotated to make the first mounting strip 2010 and the second mounting strip 2011 fit together. At this time, the card block 2013 is restored to its original position, and one end of the card block 2013 is inserted into the interior of the card groove 2014, thereby realizing the connection and fixation between the first mounting strip 2010 and the second mounting strip 2011. The sealing strips installed on the adjacent sides of the first mounting strip 2010 and the second mounting strip 2011 are squeezed and fitted together, and the bag opening 1002 of the membrane bag 1001 is sealed again.

[0036] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A plastic composite film bag for packaging, characterized in that: The invention comprises a main body (100) and a sealing mechanism (200), wherein the main body (100) comprises a membrane bag (1001), wherein the upper end of the membrane bag (1001) is provided with a bag opening (1002), and both sides of the outside of the membrane bag (1001) are provided with folds (1003), and the sealing mechanism (200) comprises a first clamping strip (2001) and a second clamping strip (2006), wherein the first clamping strip (2001) and the second clamping strip (2006) are respectively arranged on both sides of the outside of the bag opening (1002), and the insides of the first clamping strip (2001) and the second clamping strip (2006) are rotatably connected to a rotating rod (2009) via a bearing, and a pair of first mounting strips (2001) are respectively mounted on the outside of the rotating rods (2009). 10 and a second mounting strip (2011), a sealing strip is provided on adjacent sides of the first mounting strip (2010) and the second mounting strip (2011), and mounting cavities (2012) are provided inside the first mounting strip (2010) and the second mounting strip (2011), a pair of the mounting cavities (2012) are arranged diagonally, and a clamping block (2013) is movably inserted inside the pair of the mounting cavities (2012), and a clamping slot (2014) is provided inside the first mounting strip (2010) and the second mounting strip (2011) near the clamping block (2013), and one end of the clamping block (2013) extends to the inside of the clamping slot (2014) and is clamped and connected with the clamping slot (2014).

2. A plastic composite film bag for packaging according to claim 1, characterized in that: A second spring (2015) is installed on the end of the clamping block (2013) away from the clamping slot (2014), and one end of the second spring (2015) is fixedly connected to the inner wall of the installation cavity (2012).

3. A plastic composite film bag for packaging according to claim 2, characterized in that: The upper ends of the first mounting strip (2010) and the second mounting strip (2011) are both provided with a slide groove (217) near the connecting cavity (2003); the interior of the slide groove (2017) is slidably connected to a connecting block (2016); and the bottom end of the connecting block (2016) is fixedly connected to the outside of the clamping block (2013).

4. A plastic composite film bag for packaging according to claim 3, characterized in that: A push block (2018) is installed at the upper end of the connection block (2016), and a pair of protrusions (2019) are installed at the upper end of the push block (2018), and the pair of protrusions (2019) are both configured to be semi-cylindrical.

5. The plastic composite film bag for packaging according to claim 1, characterized in that: Slots (2007) are provided inside both ends of the second clamping strip (2006), insertion rods (2002) are movably inserted inside the slots (2007), and a pair of the insertion rods (2002) are fixedly connected to the first clamping strip (2001) at one end away from the inside of the slots (2007).

6. A plastic composite film bag for packaging according to claim 5, characterized in that: The second clamping strip (2006) is provided with through holes (2008) on both sides of the outside close to the slot (2007), and a pair of the insertion rods (2002) are provided with connecting cavities (2003) inside, and a limit block (2005) is movably inserted inside the connecting cavity (2003), and one end of the limit block (2005) passes through the through hole (2008) and extends to the outside, and is snap-connected with the through hole (2008).

7. The plastic composite film bag for packaging according to claim 6, characterized in that: The inner wall of the connecting cavity (2003) is installed with a first spring (2004), and the first spring (2004) is fixedly connected between an end away from the inner wall of the connecting cavity (2003) and a limiting block (2005).

8. The plastic composite film bag for packaging according to claim 1, characterized in that: The film bag (1001) comprises a PET base film layer (100101), a protective layer (100102) is embedded inside the PET base film layer (100101), a modified PVA layer (100103) is bonded to the outside of the PET base film layer (100101), and a wear-resistant layer (100104) is provided on the outside of the film bag (1001).

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