CN110745366A

CN110745366A - Building materials powder wrapping bag

Info

Publication number: CN110745366A
Application number: CN201911064764.6A
Authority: CN
Inventors: 曹乐平
Original assignee: Jilin Province Gesiqi Plastic Film Co Ltd
Current assignee: Jilin Province Gesiqi Plastic Film Co Ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-02-04

Abstract

The invention provides a packaging bag for building material powder, which is a bag body made of PE (polyethylene) materials, wherein a labyrinth type exhaust passage is arranged in the bag body and comprises an inner layer passage and a surface layer passage, the inner layer passage is communicated with the surface layer passage through a ventilation gap, the inner layer passage is communicated with the interior of the bag body, and the surface layer passage is used for exhausting gas to the outside. The vertical powder packaging machine is used in cooperation with the vertical powder packaging machine, the bag sealing mode of the vertical packaging machine is changed into heat sealing, powder cannot escape from the sealing position due to heat sealing of two ends, and similarly, gas generated in the filling process cannot escape; the labyrinth type exhaust passage of the invention solves the problem of gas escape; in addition, because the raw material for making the bag is PE plastic film, the bag has the functions which are not possessed by valve port woven bags and paper bags in the aspects of strength, oxidation ultraviolet resistance, rain prevention, moisture prevention and the like.

Description

Building materials powder wrapping bag

Technical Field

The invention relates to the field of building material packaging, in particular to a labyrinth type exhaust type building material powder packaging bag with a fly edge and a straight-discharge type building material powder packaging bag.

Background

At present, in the domestic building material industry, a bag-inserting type valve bag packaging machine is mainly adopted by a powder packaging machine, and most of the adopted bags are valve woven bags or valve paper bags.

The problem that the powder leakage of the packaging bags is serious is solved, and a lot of materials can leak from the opening of the packaging bags in the production and transportation processes. In addition, the storage position of the valve bag is very limited and can only be stored in a room. Because the valve port woven bag and the valve port paper bag are not moisture-proof and damp-proof. The valve port woven bag and the paper bag have the function of exhausting at the inserting port. The other type is the PE valve bag, although the PE valve bag can prevent rain and moisture, the PE valve bag does not have a ventilation function, and can only exhaust at the socket, so that the problems of powder leakage and material leakage, and powder leakage in the loading and unloading process is not environment-friendly are also caused. The valve bag can be added with a procedure at the valve port to seal the port, but the following disadvantage is that gas can not escape. If the bag is of poor quality, the air in the bag may be squeezed during handling, compaction, and palletization, which may result in bursting of the bag.

In particular: the opening of the socket is blocked by powder extrusion, but the powder can leak from the opening of the socket in the process of carrying, and the position of the opening of the socket can not be sealed. And the prior art adopts be valve port braided bag and valve port container bag, can't place the finished product in outdoor, and the solarization and rain drench can lead to the finished product to destroy, and the caking of intaking, the product is inefficacy. In order to prevent powder leakage, ultrasonic heat sealing is carried out on a socket of an existing PE valve bag packaging bag after filling is finished, so that the powder leakage is prevented, but the problem that air in the packaging bag escapes is not solved, and a plurality of manufacturers choose a method for punching small holes in the bag, so that the effect is poor.

Thus. The prior art is subject to further improvements and developments.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a labyrinth type exhaust packing bag for building material powder with a fly edge and a straight exhaust packing bag for building material powder, which can exhaust the air in the packing bag without being affected by moisture and rain and the subsequent transportation and stacking of products.

In order to solve the technical problem, the scheme of the invention comprises the following steps:

a building material powder packaging bag with a fly knife edge in a labyrinth type exhaust mode comprises a bag body made of PE materials, wherein a labyrinth type exhaust channel is arranged in the bag body and comprises an inner layer channel and a surface layer channel, the inner layer channel is communicated with the surface layer channel through a ventilation gap, the inner layer channel is communicated with the interior of the bag body, and the surface layer channel is used for exhausting gas to the outside.

The building material powder packaging bag is characterized in that the bag body is formed by folding, heat-sealing and lapping PE films, and the bag body is sealed in a heat-sealing mode; the inner layer channel comprises an upper inner layer channel and a lower inner layer channel, and the surface layer channel comprises an upper layer channel and a lower layer channel; the upper inner layer channel and the upper layer channel are positioned above the ventilation gap, and the lower inner layer channel and the lower layer channel are positioned below the ventilation gap to form an X-shaped labyrinth type exhaust channel; and cutting fly blade edges at the corresponding positions of the upper surface layer channel and the lower surface layer channel, and discharging the gas in the bag body from the corresponding positions through the X-shaped labyrinth type exhaust channel after the bag body is filled.

The building material powder packaging bag is characterized in that the PE film of the bag body forms the inner layer channel and the surface layer channel under the heat seal action; when printing, the corresponding position between the inner layer channel and the surface layer channel is coated with gloss oil for blocking heat seal, a blocking part is formed between the inner layer channel and the surface layer channel during heat seal, and a ventilation gap is formed at the part coated with the gloss oil.

The building material powder packaging bag is characterized in that embossing rollers are used in the inner layer channel and the surface layer channel to form an embossing unit for preventing static electricity.

The building material powder packaging bag is characterized in that the bag body is formed by folding, heat-sealing and lapping PE films, and the bag body is sealed in a heat-sealing mode; the inner layer channel is positioned above the ventilation gap, the surface layer channel is positioned below the ventilation gap, or the inner layer channel is positioned below the ventilation gap, and the surface layer channel is positioned above the ventilation gap to form two mutually symmetrical U-shaped labyrinth exhaust channels; and cutting fly knife edges at the corresponding positions of the upper surface layer channel and the lower surface layer channel, and discharging the gas in the bag body from the corresponding positions through the U-shaped labyrinth type exhaust channel after the bag body is filled.

The building material powder packaging bag is characterized in that the labyrinth type exhaust channel is synchronously thermally sealed when the bag body is manufactured.

The building material powder packaging bag is characterized in that the labyrinth type exhaust channel is prepared in advance, and then the exhaust channel is adhered to the corresponding position of the bag body. For example, the packaging bag can be manufactured by cutting in advance to fly to the opening and then overlapping; and a labyrinth type exhaust passage which is made in advance can be adhered, and then lapping is carried out, and the specific manufacturing process is not described herein.

The utility model provides a building materials powder wrapping bag of direct vent, includes the bag body of being made by the PE material, wherein, this internal first gas vent and second gas vent of having arranged of bag, bag body below edge play is provided with the first gap that first gas vent corresponds, the second gap that the second gas vent corresponds, first gas vent is linked together through first passageway and first gap, the second gas vent is linked together through second passageway and second gap, first passageway and first gap, second passageway and second gap are: coating gloss oil for blocking heat seal at the corresponding position of the bag body during printing, and forming a ventilation gap at the part coated with the gloss oil during heat seal; forming a straight exhaust channel.

The building material powder packaging bag is characterized in that embossing rollers are used in the first channel, the first gap, the second channel and the second gap to form an embossing unit for preventing static electricity.

The invention provides a building material powder packaging bag with a fly knife edge in a labyrinth type exhaust mode and a building material powder packaging bag in a direct exhaust mode, which are used by matching with a vertical powder packaging machine, wherein the vertical packaging machine is used for sealing the bag in a heat sealing mode, so that no powder can escape from the sealing position when the two ends are heat sealed, and similarly, gas generated in the filling process cannot escape; the labyrinth type exhaust passage of the invention solves the problem of gas escape; in addition, because the raw and other materials of making the sack are PE plastic film, all possessed the function that valve port braided bag, container bag did not possess in some aspects such as intensity, resistant oxidative ultraviolet, rain-proof dampproofing, that is to say can be dampproofing, rain-proof and do not influence under the prerequisite of later stage product transportation pile up neatly, make the internal gas outgoing of bag.

The method specifically comprises the following steps: the opening of the socket is blocked by powder extrusion, but the powder can leak from the opening of the socket in the process of carrying, and the position of the opening of the socket can not be sealed; but the invention adopts a heat seal mode for sealing, has good sealing performance, and can not allow powder to escape in the process of carrying.

The prior art adopts valve port woven bags and valve port paper bags, so that finished products cannot be placed outdoors, and the finished products are damaged due to exposure to sunlight and rain, water enters the finished products to be caked, and the finished products are invalid; the bag made of the PE film has the function of resisting oxidative ultraviolet rays and can prevent rainwater from entering.

In the conventional PE valve bag packaging bag, ultrasonic heat sealing is carried out at a socket after filling is finished so as to prevent powder leakage, so that the problem of air escape in the packaging bag is solved, and a plurality of manufacturers select a method for perforating holes on the bag, so that the effect is poor; the PE packaging bag is provided with the labyrinth type exhaust channel, so that the problem of exhaust falling can be solved, and the later product transportation stacking is not influenced.

Drawings

FIG. 1 is a view showing one embodiment of a labyrinth type exhaust packing bag for building material powder according to the present invention;

FIG. 2 shows a packaging bag for building material powder in a straight discharge manner according to the present invention.

Detailed Description

The present invention provides a packing bag of building material powder with a fly edge in a labyrinth type exhaust manner and a packing bag of building material powder in a straight exhaust manner, and the present invention will be described in further detail below in order to make the object, technical scheme and effect of the present invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides a building material powder packaging bag with a fly edge in a labyrinth type exhaust mode, which comprises a bag body made of PE materials, wherein the bag body is filled with AEFL shown in figure 1, a labyrinth type exhaust channel is arranged in the bag body, the labyrinth type exhaust channel comprises an inner layer channel and a surface layer channel, the inner layer channel is communicated with the surface layer channel through a ventilation gap K, the inner layer channel is communicated with the interior of the bag body, and the surface layer channel is used for exhausting gas to the outside.

For further description, the bag body is formed by folding, heat-sealing and lapping PE films, and the bag body is sealed in a heat-sealing mode; the inner layer channel comprises N of an upper inner layer channel CD and Q of a lower inner layer channel HJ, and the surface layer channel comprises M of an upper layer channel BC and P of a lower layer channel GH; the upper inner layer channel N and the upper layer channel M are positioned above the ventilation gap K, and the lower inner layer channel Q and the lower layer channel P are positioned above and below the ventilation gap K to form an X-shaped labyrinth exhaust channel; and cutting fly knife edges at the corresponding positions of the upper layer channel N and the lower layer channel Q, reserving, and discharging gas in the bag body from the X-shaped labyrinth type exhaust channel after the bag body is filled.

The PE film of the bag body forms the inner layer channel and the surface layer channel under the heat seal action; when in printing, the corresponding position between the inner layer channel and the surface layer channel is coated with gloss oil for blocking heat seal, a blocking part, namely CH, is formed between the inner layer channel and the surface layer channel during heat seal, and the part coated with the gloss oil forms a ventilation gap K. Of course, a central seam mode formed by heat sealing CH can be adopted, the position where the gloss oil is smeared is between BC and GH, and another exhaust mode except surface layer fly edge exhaust is formed. And embossing rollers are used in the inner layer channel and the surface layer channel to form embossing units for preventing static electricity. The BGJD is internally provided with small black dots with embossing units formed by embossing rollers in the exhaust channel, and the reason for this is that the double-layer exhaust channel can be completely contacted with each other under the action of static electricity, which is similar to the attraction of the air, so that the air in the bag can be discharged in time.

Certainly, the bag body can also be formed by folding, heat-sealing and lapping the edge of a PE film, and the bag body is sealed in a heat-sealing mode; the inner layer channel is positioned above the ventilation gap K, the surface layer channel is positioned below the ventilation gap K, or the inner layer channel is positioned below the ventilation gap K, and the surface layer channel is positioned above the ventilation gap K, so that two mutually symmetrical U-shaped labyrinth exhaust channels are formed; and cutting a fly blade at the corresponding position of the surface layer channel, presetting the fly blade in advance, and discharging gas in the bag body from the U-shaped labyrinth type exhaust channel after the bag body is filled. In the explanation of fig. 1, MN is used as a back layer channel, PQ is used as a front layer channel, and the MN is connected to the K, that is, gas in the bag body enters the K through the MN and is discharged from the K through the PQ.

And the exhaust channel is synchronously thermally sealed when the bag body is manufactured. And finishing the preparation of the exhaust channel in advance, and then sticking the exhaust channel to the corresponding position of the bag body.

In order to describe the present invention in more detail, the following examples are given for illustrative purposes.

In fig. 1, af L E is a front view of the bag, and af L E is the outermost edge of a bag. It is made up by using P E flat film through the processes of folding edge, tube-forming, lapping and heat-sealing. The PE films in the bag body are overlapped and thermally sealed at two edges to form a B G J D middle seam area which is a labyrinth type exhaust passage. M, N, P, Q are air outlets cut by fly cutter. The centre seam region of the bog jd is actually a double lap heat seal formed channel, where N, Q is the exit of the inner layer and M, P is the exit of the face layer. After the bag is filled with product, gas first enters the K area from the outlet port of N, Q in the inner layer of the slit in the direction of the arrow, K being actually a vent slit, and then continues to travel to the left side, entering the left exhaust channel in the direction of the arrow, exiting through the port of the face layer M, P and exiting the bag. C H is also heat sealed to block the entire vent passage and thus the only way to make gas in and out is the vent gap K which is coated with a substance called gloss oil during printing, which acts to block the heat seal C H, where the section of the K area is not heat sealed due to the gloss oil, so that gas can escape from the inside to the outside of the bag. This exhaust system is a labyrinth type exhaust system shaped like an "X". On the basis of the above, two symmetrical 'U's can be formed, namely M, N is used as two inner layer air outlets which are positioned at the inner side of the channel, P, Q is used as an outer layer air outlet, so that the air comes out of M, N and is completely discharged out of the bag through P, Q.

When the PE film is subjected to edge folding, lapping and heat sealing to form the exhaust channel BGJD, and CH is a middle seam of the exhaust channel heat sealing:

for example, N, Q is the air outlet (fly edge) of the inner layer, M, P is the air outlet (fly edge) of the surface layer, the K area is the air-permeable area coated with gloss oil and not sealed by heat, the gas is discharged from the inner layer to the other half of the exhaust passage from the K, reaches the BGHC area, and then is discharged out of the bag through the fly edge M, P of the surface layer. On the other hand, the product may be discharged from M, P through K N, Q. Likewise, a U-labyrinth exhaust system may be provided in this manner.

It can also be seen that N, Q is the air outlet (fly edge) of the inner layer, M, P is the air outlet (fly edge) of the face layer, the K region is the region which is not heat sealed and ventilated with the varnish, the air passes from the K to the other half of the exhaust channel from the inner layer to reach the BGHC region, between BC and between GH because the varnish is coated when printed in advance, and therefore the air is not heat sealed during the heat sealing process, and an exhaust channel similar to a pipeline is formed. Similarly, BC, CD, GH, HJ may be provided as such exhaust passages.

In order to achieve the purpose of the present invention, corresponding deformation may be performed on the basis of the present invention, so that each channel is flexibly combined, which is not described herein in detail.

The invention also provides a direct-discharge type packaging bag for building material powder, which comprises a bag body made of PE material, as shown in figure 2, a first exhaust port M and a second exhaust port N are arranged in the bag body, a first gap P corresponding to the first exhaust port M and a second gap Q corresponding to the second exhaust port N are arranged at the edge of the lower part of the bag body, the first exhaust port M is communicated with the first gap P through a first channel, the second exhaust port N is communicated with the second gap Q through a second channel, and the first channel, the first gap P, the second channel and the second gap Q are respectively as follows: coating gloss oil for blocking heat seal at the corresponding position of the bag body during printing, and forming a ventilation gap at the part coated with the gloss oil during heat seal; forming a straight exhaust channel.

And embossing units for preventing static electricity are formed in the first channel, the first gap, the second channel and the second gap by using embossing rollers. Specifically, the method comprises the following steps:

as shown in FIG. 2, the air outlets in the exhaust passage are M, N, P, Q are air outlets with gloss oil brushed on the bottom, and in the process of heat combination, the P, Q area is not heat-sealed, so that the exhaust passages from M to P, N to Q are formed. P and Q are only two small slits without heat seal, and are not formed with air outlet holes similar to a circle in the drawing, but are made in a circle shape in fig. 2 for the sake of illustration only. Since P, Q has no heat seal gap, P, Q provides flexibility in the position of P, Q in fig. 2, or on the side of the exhaust passage, such as at a location on the BG or DJ. Since this type of exhaust is straight exhaust, the following two types exist in the region of the vent gap K in fig. 1:

1. are present. Also in the form of a box as in fig. 2. 2. Is absent. I.e., the seam in fig. 2 is completely sealed and the gas is then vented out of the bag in a straight line.

Certainly, the exhaust channel BGJD can be manufactured by lapping and heat-sealing in advance, the fly cutter opening M, P is cut in advance, then the K part is not heat-sealed due to the fact that gloss oil is coated, glue is brushed on the CHJD area on the inner side of the bag, the exhaust channel CHJD is adhered to, the exhaust channel can be manufactured by non-woven fabrics, and the fly cutter opening N, Q is cut in advance. The specific forms thereof are widely varied and are described herein by way of example only and may be suitably modified in accordance with the teachings of the present invention and are not described in detail herein.

It should be understood, however, that the description herein of specific embodiments is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a building materials powder wrapping bag of labyrinth exhaust mode with fly edge of a knife, includes the bag body of making by the PE material, its characterized in that, this internal labyrinth exhaust passage that has arranged of bag, this labyrinth exhaust passage include nexine passageway and surface course passageway, are linked together through a ventilation gap between nexine passageway and the surface course passageway, and the nexine passageway is linked together with internal portion of bag, and the surface course passageway is used for the exhaust gas to the external world.

2. A packaging bag for building material powder as claimed in claim 1, wherein the bag body is formed by folding, heat-sealing and lapping a PE film, and the bag body is sealed by heat-sealing; the inner layer channel comprises an upper inner layer channel and a lower inner layer channel, and the surface layer channel comprises an upper layer channel and a lower layer channel; the upper inner layer channel and the upper layer channel are positioned above the ventilation gap, and the lower inner layer channel and the lower layer channel are positioned below the ventilation gap to form an X-shaped labyrinth type exhaust channel; and cutting fly blade edges at the corresponding positions of the upper surface layer channel and the lower surface layer channel, and discharging gas in the bag body from the X-shaped labyrinth type exhaust channel at the corresponding positions after the bag body is filled.

3. A packaging bag for building material powder according to claim 2, wherein the PE film of the bag body forms said inner passage and said surface passage by heat-sealing; when printing, the corresponding position between the inner layer channel and the surface layer channel is coated with gloss oil for blocking heat seal, a blocking part is formed between the inner layer channel and the surface layer channel during heat seal, and a ventilation gap is formed at the part coated with the gloss oil.

4. A packing bag for building material powder according to claim 1, wherein an embossing roll is used in both the inner passage and the surface passage to form an embossing unit for preventing static electricity.

5. A packaging bag for building material powder as claimed in claim 1, wherein the bag body is formed by folding, heat-sealing and lapping a PE film, and the bag body is sealed by heat-sealing; the inner layer channel is positioned above the ventilation gap, the surface layer channel is positioned below the ventilation gap, or the inner layer channel is positioned below the ventilation gap, and the surface layer channel is positioned above the ventilation gap to form two mutually symmetrical U-shaped labyrinth exhaust channels; and cutting fly blade edges at the corresponding positions of the upper surface layer channel and the lower surface layer channel, and discharging gas in the bag body from the U-shaped labyrinth type exhaust channel at the corresponding positions after the bag body is filled.

6. A packing bag for building material powder according to claim 2 or 5, wherein said labyrinth air outlet passage is formed by heat-sealing in synchronization with the formation of said bag body.

7. A packing bag for building material powder according to claim 2 or 5, wherein said labyrinth air exhausting passage is prepared in advance and then adhered to a corresponding portion of the bag body.

8. The utility model provides a building materials powder wrapping bag of direct vent, includes the bag body of being made by the PE material, its characterized in that, this internal first gas vent and the second gas vent of arranging of bag, bag body below edge department is provided with the first gap that first gas vent corresponds, the second gap that the second gas vent corresponds, first gas vent is linked together through first passageway and first gap, the second gas vent is linked together through second passageway and second gap, first passageway and first gap, second passageway and second gap are: coating gloss oil for blocking heat seal at the corresponding position of the bag body during printing, and forming a ventilation gap at the part coated with the gloss oil during heat seal; forming a straight exhaust channel.

9. The building material powder packaging bag of claim 8, wherein the first passage, the first slit, the second passage and the second slit are formed with embossing rollers to form an embossing unit for preventing static electricity.