TWM654304U - Zipper-bag edge sealing device - Google Patents

Abstract

This invention discloses a zipper belt edge sealing device for zipper bags, which is used to heat-seal the belt-shaped male and female chains on the continuous plastic film. It includes a machine, at least one preheating station, and at least one regional heat-sealing station arranged on the machine in sequence. The preheating station first preheats the belt-shaped male and female chains locally, and then heat-seals the preheated belt-shaped male and female chains at the regional heat-sealing station, so as to solve the problem of damage to the aluminum layer material when the belt-shaped male and female chains are heat-seal.

Description

Zipper bag's zipper edge sealing device

This creation is related to the technical field of hot melt processing equipment, especially a zipper edge sealing device for zipper bags.

As shown in Figures 10 and 11, the zipper bag 91 is composed of a continuous plastic film 92, a belt-shaped male chain 93 and a belt-shaped female chain 94.

The continuous plastic film 92 is first aligned to define a male side piece 921 and a female side piece 922 through each matching station on the machine 10 for preparing the zipper bag 91, and the male belt chain 93 and the female belt chain 94 are respectively assembled to correspond to the male side piece 921 and the female side piece 922 at the opening of the zipper bag 91. Further, the side seal part 911 is formed by heat sealing process at the two ends of the zipper bag 91 near the male belt chain 93 and the female belt chain 94. And the bottom seal part 912 is formed by heat sealing process at one end of the zipper bag 91 away from the opening.

The known heat sealing process for forming the side seal portion 911 is to use a heat sealing device such as a direct-down heat sealer to respectively configure a heat sealing mold at the upper and lower ends, and heat seal the preset position of the continuous plastic film 92 in a direct-upward and direct-down manner to form the corresponding side seal portion 911 of the ziplock bag 91.

From the above structure, it can be seen that the male chain part 931 and the male wings 932 on both sides of the belt-shaped male chain 93, and the female chain part 941 and the female wings 942 on both sides of the belt-shaped female chain 94, respectively have different thicknesses. When they are stacked on the continuous plastic film 92, the temperature, time and pressure required for heat sealing are also different due to the different thicknesses. This causes troubles and defects in the processing of the heat sealing device, such as:

1. When the male belt chain 93, the female belt chain 94 and the continuous plastic film 92 are heat-sealed by conventional pressing, the male chain part 931 and the female chain part 941 are thick, so that the edges of the male wing part 932 (female wing part 942) and the continuous plastic film 92 form a very small gap on one side, and a reliable hot-melt seal cannot be formed.

2. After the belt-shaped male chain 93 and the belt-shaped female chain 94 are installed on the continuous plastic film 92, during the process of forming the side seal 911, if the temperature is low, the belt-shaped male chain 93 and the belt-shaped female chain 94 cannot be fully melted. If the temperature is high, the continuous plastic film 92 will produce pinholes and other defects, so the temperature setting or pressure control is very troublesome and troublesome.

3. If the continuous plastic film 92 is a multi-layer structure and contains an aluminum layer, aluminum is not resistant to high temperature and pressure, and is easily melted and cracks or other defects appear in the area near the male and female chain parts 931 and 941 of the side seal part 911. Once cracks appear, it means that the ziplock bag 91 is a defective product. This also causes the continuous plastic film 92 containing an aluminum layer to be used in the ziplock bag 91. The yield is poor and limited.

In view of the above-mentioned problems and deficiencies of the prior art, it is necessary to further solve the problem of defective zipper bags caused by the hot melting process of the zipper belt under the conditions of the existing machines.

The main purpose of this creation is to provide a zipper edge sealing device for zipper bags, solving the deficiencies of previous technologies through innovative structural design.

According to the above purpose of this invention, this invention discloses a zipper belt edge sealing device for zipper bags, which is used to heat-seal the belt-shaped male chain and belt-shaped female chain on the continuous plastic film. It includes a machine, at least one preheating station and at least one regional heat-sealing station arranged on the machine in sequence. The preheating station first preheats the belt-shaped male and female chains locally through the upper component, and then heat-seals the preheated belt-shaped male and female chains at the regional heat-sealing station, so as to solve the damage to the aluminum layer material when the belt-shaped male and female chains are heat-seal.

10: Machine

20: Preheating station

21: The first heat sealer

211: First upper knife seat

212: First lower knife seat

22: Profiling mold

221: Profile groove

23: The first bearing mold

231: First load-bearing plane

30: Regional heat sealing station

31: Second heat sealer

311: Second upper knife seat

312: Second lower knife seat

32: Hot melt mold

321: Press against plane

33: Second carrier mold

331: Second load-bearing plane

A:Edge banding

<Previous Skills>

91: Zipper bag

911: Side seal

912: Bottom seal

92: Continuous plastic film

921: Public profile

922: Maternal side film

93: Ribbon public chain

931: Public Chain Department

932: Public Wing

94: Ribbon master chain

941: Mother chain

942: Mother Wing

[Figure 1] is a three-dimensional schematic diagram of an embodiment of the present invention.

[Figure 2] is a schematic diagram of another viewing angle of the embodiment shown in Figure 1.

[Figure 3] is a three-dimensional schematic diagram of the preheating station implementation example of this invention.

[Figure 4] is a three-dimensional schematic diagram of the heat sealing station implementation example of this creative area.

〔Figure 5〕is the operation diagram of the preheating station of this creation (I).

〔Figure 6〕is the schematic diagram of the preheating station operation of this creation (Part 2).

[Figure 7] is a schematic diagram of the operation of the heat sealing station in this creative area.

[Figure 8] is a schematic diagram of the completed edge banding of the zipper strap of this creation.

[Figure 9] is a schematic cross-sectional view of the embodiment shown in Figure 8.

[Figure 10] is a three-dimensional schematic diagram of a ziplock bag in the prior art.

[Figure 11] is a schematic cross-sectional view of the embodiment shown in Figure 10.

Please refer to the relevant drawings below to further explain the embodiments of the zipper edge sealing device of the zipper bag of this invention. The various objects in the embodiments are depicted according to the proportions, sizes, deformation amounts or displacement amounts applicable to the description, rather than the proportions of the actual components, which should be explained first. And the same and symmetrically arranged components in the remaining embodiments are all represented by the same numbers. In addition, the directional terms such as "front, back, left, right, top, bottom, inside, outside" in the description of each embodiment listed below are expressed according to the specified viewing direction and cannot be used as an interpretation of the limitation of this invention.

Please refer to Figures 1 to 9, which disclose a zipper tape edge sealing device for a zipper bag, which is used to locally perform heat melting to form edge sealing on a belt-shaped male chain 93 and a belt-shaped female chain 94 on a continuous plastic film 92, and includes a machine 10, at least one preheating station 20, and at least one regional heat sealing station 30 sequentially arranged on the machine 10.

The above-mentioned machine 10 has a preset profile for the continuous plastic film 92 to move on the machine 10. During implementation, the machine 10 is a prior art and is provided with a number of equipment stations for processing the continuous plastic film 92 to form a ziplock bag 91 (prior art, not shown in the figure).

The above-mentioned preheating station 20 includes a first heat sealer 21, a contour mold 22 and a first supporting mold 23.

The first heat sealer 21 is set on the machine 10 by the previous technology, providing continuous plastic film 92 penetration, and has a first upper knife seat 211 and a first lower knife seat 212. During implementation, the first heat sealer 21 is selected from a direct-down heat sealer, and is actuated by moving the first upper knife seat 211 directly upward and downward against the first lower knife seat 212.

The profiling mold 22 corresponds to the position of the strip male chain 93 or the strip female chain 94 on the continuous plastic film 92, is assembled on the first upper knife seat 211 and is heated to a preset temperature by the first upper knife seat 211 to preheat and heat-melt the strip male chain 93 or the strip female chain 94 locally. The end surface of the profiling mold 22 in contact with the continuous plastic film 92 is concavely provided with a profiling groove 221 for accommodating the male chain portion 931 of the strip male chain 93 or the female chain portion 941 of the strip female chain 94.

The first supporting mold 23 is arranged on the first lower knife seat 212 corresponding to the position of the profiling mold 22 and is heated to a preset temperature by the first lower knife seat 212 to preheat the belt-shaped male chain 93 or the belt-shaped female chain 94 locally. The end surface of the first supporting mold 23 in contact with the continuous plastic film 92 is provided with a first supporting plane 231.

The above-mentioned regional heat sealing station 30 is installed on the machine 10 and includes a second heat sealing machine 31, a hot melt mold 32 and a second supporting mold 33.

The second heat sealer 31 is set on the machine 10 by the previous technology, providing continuous plastic film 92 penetration, and has a second upper knife seat 311 and a second lower knife seat 312. During implementation, the second heat sealer 31 is selected from a direct-down heat sealer, and is actuated by moving the second upper knife seat 311 directly upward and downward against the second lower knife seat 312.

The hot melt mold 32 is arranged on the second upper knife seat 311 corresponding to the position of the belt-shaped male chain 93 or the belt-shaped female chain 94, and is heated to a preset temperature by the second upper knife seat 311; wherein the end surface of the hot melt mold 32 in contact with the continuous plastic film 92 corresponds to the position of the belt-shaped male chain 93 or the belt-shaped female chain 94, and has a pressing plane 321.

The second supporting mold 33 corresponds to the position of the hot melt mold 32, is assembled on the second lower knife seat 312, and is heated to a preset temperature by the second lower knife seat 312; wherein the second supporting mold 33 is in contact with the end surface of the continuous plastic film 92, and is provided with a second supporting plane 331.

Therefore, the above is an introduction to the various components and assembly methods of the zipper edge sealing device of the zipper bag provided by this invention in a preferred embodiment. The operating features of the embodiment of this invention are introduced as follows.

The continuous plastic film 92 moves along the processing path of the machine 10, passes through the preheating station 20 and the regional heat sealing station 30 in sequence, and performs preheating, hot melting and other processes on the belt-shaped male chain 93 and the belt-shaped female chain 94 on the continuous plastic film 92 in sequence at the preset position of the continuous plastic film 92, so as to form an edge seal for the zipper belt on the continuous plastic film 92.

<Wing hot melt and preheating>

As shown in Figures 5 and 6, when the continuous plastic film 92 passes through the first heat sealer 21 at the preset position, the first upper knife seat 211 descends to abut against the first lower knife seat 212, so that the contour mold 22 assembled on the first upper knife seat 211 cooperates with the first lower knife seat 212 and the first supporting mold 23 assembled thereon to jointly clamp the belt-shaped male chain 93, the belt-shaped female chain 94 and the continuous plastic film 92 to form local preheating and hot melting.

In the above process, the profiling mold 22 cooperates with the first supporting plane 231 of the first supporting mold 23 at the end surfaces on both sides of the profiling groove 231 to jointly clamp the male wing parts 932 on both sides of the male chain part 931, the female wing parts 942 on both sides of the female chain part 941, and the overlapping parts of the continuous plastic film 92 to form a local heat fusion (seal).

During the hot melt process, the profiling mold 22 uses the profiling groove 231 to accommodate the thick male chain part 931 and the female chain part 941, thereby preventing the male chain part 931 and the female chain part 941 from being pressed, and simultaneously preheating the male chain part 931 and the female chain part 941.

Since the contour mold 22 and the first bearing mold 23 are not affected by the thickness of the male chain part 931 and the female chain part 941, the male wing part 932, the female wing part 942, and the continuous plastic film 92 can be heat-fused to each other to avoid gaps and other defects.

<Regional hot melt>

As shown in Figures 7 and 8, when the preheating area of the continuous plastic film 92 extends to the second heat sealer 31, the second upper knife seat 311 descends to abut the second lower knife seat 312, so that the hot melt mold 32 (pressing plane 321) assembled on the second upper knife seat 311 cooperates with the second lower knife seat 312 and the second supporting mold 33 (second supporting plane 331) assembled thereon to jointly clamp the strip male chain 93 and the strip female chain 94, and locally pressurize the overlapping parts of the strip male chain 93, the strip female chain 94, and the continuous plastic film 92, so that the strip male chain 93 (male chain part 931) and the strip female chain 94 (female chain part 941) are hot-melted to form a whole.

Since the strip-shaped male chain 93 (male chain part 931) and the strip-shaped female chain 94 (female chain part 941) in the preset heating area have been preheated and softened, when the hot melt mold 32 applies pressure, the strip-shaped male chain 93 (male chain part 931) and the strip-shaped female chain 94 (female chain part 941) can be locally hot-melted smoothly and reliably to form the edge seal A.

The above description is only the best implementation method of this creation, which is intended to clarify the characteristics of this creation, and is not used to limit the scope of the implementation of this creation. The equal changes made by ordinary technicians in this technical field based on this creation, as well as the changes familiar to technicians in this field, should still fall within the scope of this creation.

10: Machine

20: Preheating station

21: The first heat sealer

211: First upper knife seat

212: First lower knife seat

30: Regional heat sealing station

31: Second heat sealer

311: Second upper knife seat

312: Second lower knife seat

92: Continuous plastic film

Claims (1)

A zipper belt edge sealing device for a zipper bag, used to partially fuse a belt-shaped male chain and a belt-shaped female chain on a continuous plastic film, wherein: The belt-shaped public chain includes a public chain portion and a plurality of public wing portions disposed on both sides of the public chain portion; The belt-shaped mother chain includes a mother chain portion and a plurality of mother wing portions disposed on both sides of the mother chain portion; The zipper bag's zipper edge sealing device includes: One machine; At least one preheating station is used to preheat and heat-melt the ribbon male chain, the ribbon female chain, and the continuous plastic film, including: A first heat sealer, arranged on the machine to provide the continuous plastic film penetration, having an upper and lower configuration and a first upper knife seat and a first lower knife seat that selectively form an opening and closing action; A profiling mold, corresponding to the position of the strip-shaped male chain and the strip-shaped female chain, is assembled on the first upper knife seat and is heated to a preset temperature by the first upper knife seat, wherein the end surface of the profiling mold in contact with the continuous plastic film is concavely provided with a profiling groove for accommodating the male chain part and the female chain part; and A first bearing mold, corresponding to the position of the profiling mold, is assembled on the first lower knife seat and is heated to a preset temperature by the first lower knife seat, wherein the end surface of the first bearing mold in contact with the continuous plastic film has a first bearing plane, and when the profiling mold abuts against the first bearing mold, the male chain part and the female chain part are preheated together, and each male wing part, each female wing part and the continuous plastic film are partially hot-pressed and fused; and At least one regional heat sealing station performs heat-pressing fusion on the preheated male chain part and the female chain part, including: A second heat sealer, installed on the machine to provide the continuous plastic film penetration, has an upper and lower configuration and a second upper knife seat and a second lower knife seat that selectively form an opening and closing action; A hot melt mold, corresponding to the position of the strip-shaped male chain or the strip-shaped female chain, is assembled on the second upper knife seat and is heated to a preset temperature by the second upper knife seat, wherein the end surface of the hot melt mold in contact with the continuous plastic film has a pressing plane; and A second supporting mold is arranged on the second lower knife seat corresponding to the position of the hot melt mold and is heated to a preset temperature by the second lower knife seat, wherein the end surface of the second supporting mold in contact with the continuous plastic film has a second supporting plane, and when the hot melt mold abuts against the second supporting mold, the preheated male chain part and the female chain part are partially hot-pressed and fused.

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