CN1008253B - Method for heat-sealing inner envelope of double envelope assembly - Google Patents
Method for heat-sealing inner envelope of double envelope assemblyInfo
- Publication number
- CN1008253B CN1008253B CN 85102065 CN85102065A CN1008253B CN 1008253 B CN1008253 B CN 1008253B CN 85102065 CN85102065 CN 85102065 CN 85102065 A CN85102065 A CN 85102065A CN 1008253 B CN1008253 B CN 1008253B
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- CN
- China
- Prior art keywords
- bag
- double
- inner bag
- heat seal
- ply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The present invention relates to a method only carrying out heat sealing for an inner bag from the outer part of an outer bag when the inner bag is sheathed in the outer bag to form a double-layer bag. A pair of heat sealing components are used for carrying out the heat sealing operation. The inner bag and the outer bag are together clamped between the heat sealing components but the inner bag is made from the material of which the softening point is lower than that of the material of the outer bag. The temperature of the heat sealing component is set at the temperature close to the softening point of the inner bag; thus, the heat sealing operation is only carried out to the inner bag, and the outer bag is not softened or heated to be sealed.
Description
The invention relates to the inner bag heat seal encapsulating method that the inner bag that is sleeved in the outer bag of double-ply bag is carried out the heat seal sealing.
Need prevent some fertilizer of moisture absorption, need prevent the sack of article such as some medicine of gas infiltration and dress resin, generally all will use outer bag to be with the double-deck sack of inner bag.But this double-ply bag always all is that an end of outer bag and inner bag is made.Like this, prevent fully that the infiltration of moisture absorption and gas from being impossible, therefore, require inner bag is carried out the heat seal sealing separately.List carries out involution to inner bag, can not damage the intensity of outer bag and inner bag, and can improve its sealing, can prevent the infiltration of moisture absorption and gas fully.
Disclose a kind of double-ply bag in No. 3630798, United States Patent (USP), it comprises plastic outer bag (11) and inner bag (17).Inner bag is to be made by plastic barrel, promptly the base of plastic barrel is sealed with conventional method.But do not mention as only grip of the present invention outside the bag in inner bag rise in the situation lower seal that packages.In No. 3630798, United States Patent (USP),, just must from outer bag (11), pull out it in order to seal inner bag (17).
The objective of the invention is external bag of inner bag that is with the double-ply bag of inner bag and carry out the heat seal sealing.
When the inner bag of double-ply bag is carried out the heat seal sealing, need carry out the heat seal sealing to internal bag, and, just require and to have sealed outer bag also heat seal as long as when carrying out the heat seal sealing to internal bag from the outside of outer bag.The used inner bag of the present invention is to make than the low material of outer bag softening point.Inner bag is clipped between a pair of heat seal containment member together with outer bag, again the temperature of heat seal containment member is fixed on about the inner bag softening point temperature.Like this, just can carry out the heat seal sealing to internal bag separately from outer bag outside.
Below with regard to accompanying drawing embodiments of the invention are described.
Fig. 1 is the side view of expression one embodiment of the invention.
Fig. 2 is the front elevation of Fig. 1.
Fig. 3 is the key diagram of expression with the device heat seal sealing double-ply bag of Fig. 1.
Fig. 4 is the double-ply bag that Fig. 3 is cut off in expression, pulls out the key diagram of its inner bag state.
Fig. 5 is the profile of circular loom of the double-ply bag of expression shop drawings 1.
Fig. 6 is the metallic plate of presentation graphs 1, heater, off-position mark printer structure, the time diagram of the cylinder action of drying machine and planker.
Fig. 1 represents that double-ply bag (1) is constantly to be sent from the circular loom of making double-ply bag.As shown in Figure 3, double-ply bag (1) is by the outer bag of sending in succession (2) and sends inner bag (3) suit in succession and form that inner bag (3) inboard every certain-length of bag (2) is outside just turned up a certain amount of.Because this device be from the outside of outer bag (2) to internal bag (3) carry out the heat seal sealing, so inner bag (3) along involution line (4) by involution.After the involution, outer bag (2) and inner bag (3) are made along sewing line (5), are cut off in off-position (6).As shown in Figure 4, when outside cut, pulling out cut inner bag (3) in the bag (2), just can obtain inner bag (3) double-ply bag longer than outer bag (2).
Outer bag (2) and inner bag (3) are sandwiched between a pair of heater (7H), (7L) just a pair of heat seal member.Outer bag (2) is with suitable plastics, as weaving with polyacrylic warp and parallel.As everyone knows, polyacrylic softening point is 140 ℃-160 ℃, and its molten point is 165 ℃-173 ℃.Thereby inner bag (3) uses than the low material of outer bag (2) softening point, as uses the polyethylene extrusion modling.Poly softening point is 100 ℃-115 ℃, and its molten point is 125 ℃-135 ℃.Heater (7H) temperature (7L) is fixed near the softening point of inner bag (3), as about 110 ℃.
Heater (7H), (7L) both sides about the width of double-ply bag is configured in, and then this device are used for holding under the arm two pairs of metallic plates (8H) of inner bag (3) and outer bag (2) in addition, (8L), (9H), (9L), heater (7H), (7L) and metallic plate (8H), (8L), (9H), (9L), each free planker (10) is supporting.Present embodiment as shown in Figure 2, the two ends of heater (7H), (7L) are to insert in the groove of grooved member, the grooved member then is fixed on the planker (10), and so, heater (7H), (7L) just can carry out the displacement of above-below direction with respect to planker (10).Also have, this device also has the cylinder (11H) of a pair of operate heater (7H), (7L), and (11L), cylinder (11H), (11L) are assemblied on the planker (10), and are connected with bell crank (12H), (12L).Heater (7H), (7L) are connected with bell crank (12H), (12L) by connecting rod (13H), (13L).Bell crank (12H), (12L) bolt (14H), (14L) by chassis (10) supporting, and can rotate and shake.Each to metallic plate (8H), (8L), (9H), (9L) among, pair of metal plate (8H), (8L) on one side is the left side that is configured in heater (7H), (7L), promptly send one side of double-ply bag direction, the direction of suitable double-ply bag banner is contained in its both sides up and down.Yi Bian pair of metal plate (9H), (9L) is the other direction that double-ply bag is promptly carried on the right side that is configured in heater (7H), (7L) in addition, also is the banner direction along double-ply bag (1), is arranged on both sides up and down.Each all is to be supported on above the planker (10) to metallic plate (8H), (8L), (9H), (9L), and can do the above-below direction displacement.Metallic plate (8H), (9H) of top can be operated by cylinder (15).Plate in this example (8H), (9H) are contained on the connecting plate (16), are connected with cylinder (15) by connecting rod (17).Connecting plate (16) and connecting rod (17) can slide at above-below direction by guide rod (18).And the metallic plate of below (8L), (9L) its two ends are to be inserted in the groove of grooved member (19), are being supported by spring (20).So, metallic plate (8L), (9L) can support the displacement of making relative above-below direction with planker (10).
Planker (10) is furnished with the roller (22) that rolls on guide rail (21), guide rail (21) is to be configured in the direction of carrying double-ply bag (1).Therefore, just can drive planker (10) by guide rail (21) and roller (22) moves to the direction of continuous transmission plastic foil (1).Also have, this device has the cylinder (23) of specialized operations planker (10), and cylinder (23) has and the contacted top (24) that contacts of planker, and it is configured in the right side of planker (10), is being fixed by carriage (25).
This device stamps the printing mechanism (not expression on the figure) of off-position mark and the drying machine (figure is expression not) of dry inner bag (3) heat seal sealing on the outer bag (2) that is provided with on the off-position at double-ply bag (1), off-position mark printer structure and drying machine are being supported by planker (10) respectively.
Fig. 5 is the circular loom of the double-ply bag (1) of expression shop drawings 3.About the structure and the not direct relation of the present invention of this circular loom, so will not illustrate.Here only it is done as simple declaration.The outer bag (2) of double-ply bag (1) is by the parallel braiding of the warp (26) of majority and shuttle (27), takes out from ring gauge (28).Inner bag (3) is to extract out from take up roll, the inside of bag (2) outside insert the top of ring gauge (28).Then inner bag (3) is just sent from output roll (30) together continuously with outer bag (2).Also have outer bag (2) and inner bag (3) to be sent certain length at every turn, inner bag (3) will be inhaled into mouthful (31) outside attraction from outer bag (2), roll bending (32) inboard of bag (2) outside descends, and by suction inlet (31) and roll bending (32) inner bag (3) is rolled by a certain percentage.
As the above-mentioned device that constitutes in, double-ply bag (1) is sent continuously from circular loom.Be sent to right-hand by metallic plate (8H), (8L), (9H), (9L) and heater (7H), (7L).When the inner bag (3) to double-ply bag (1) carried out heat seal, the cylinder (11H) that drives heater (7H), (7L) (11L) (12L) can shake bell crank (12H).The heater (7H) of upside is descended, and the heater of downside (7L) rises, and holds the inner bag (3) and the outer bag (2) that stay between heater (7H), (7L) under the arm so that can be from the outside of outer bag (2) to internal bag (3) carry out heat seal.The inner bag (3) that also has double-ply bag (1) is to adopt than the low material of outer bag (2) softening point to make.The temperature of heater (7H), (7L) just can be set near inner bag (3) softening point.So, in reasonable time,, just can hold outer bag (2) and inner bag (3) under the arm between heater (7H), (7L), and only carry out heat seal with regard to inner bag (3) by heater (7H), (7L) as only needing the time in 6 seconds.Outer bag (2) can not soften, so just can the heat seal sealing yet.
In addition, when the inner bag (3) to double-ply bag (1) carried out heat seal, this device need not to interrupt the conveying of double-ply bag (1), can carry continuously as before.Outer bag (2) is held under the arm at heater (7H) with inner bag (3), (7L) before, as shown in Figure 6, the cylinder of transmission metallic plate (15) makes the metallic plate (8H) of upside, (9H) descend, double-ply bag is just held under the arm at each metallic plate (8H), (8L), (9H), (9L), the tension force of double-ply bag (1) just is transferred to metallic plate (8H) like this, (8L), (9H), (9L) and planker (10), planker (10) is that right moves towards the direction of carrying double-ply bag (1), so that heater (7H), (7L) just energy and planker (10) integral body move together.Its speed is consistent with the transporting velocity of plastic foil (1).After this, the cylinder (11H) of heater (7H), (7L), (11L) start, double-ply bag (1) is held under the arm between heater (7H), (7L), and so just (3) carry out heat seal continuously to internal bag, need not to interrupt the conveying of double-ply bag simultaneously.
In addition, double-ply bag (1) is held under the arm between heater (7H), (7L).Being somebody's turn to do outer bag (2) and inner bag (3) just is heated.Just held under the arm between on one side metallic plate (8H) of left side, (8L) at the double-ply bag (1) in heater (7H), (7L) left side.Right side double-ply bag (1) is just held under the arm between another is to metallic plate (9H), (9L).The tension force of double-ply bag (1) passes the position less than heater (7H), (7L).So outer bag (2) and inner bag (3) are heated by heater (7H), (7L), its heating part branch that needn't worry extends.
When double-ply bag (1) is held under the arm between heater (7H), (7L), can make the off-position mark printer structure work of planker 10, bag (2) stamps the mark of off-position outside.And then, drive the drying machine of planker (10) through certain hour, allow the part of inner bag (3) heat seal sealing carry out drying.
Preset time one mistake, the air cylinder driven of heater (7H), (7L) makes double-ply bag (1) free from heater (7H), (7L).Pass through the given time again, the cylinder of metallic plate (15) drives, and double-ply bag (1) frees from metallic plate (8H), (8L), (9H), (9L) again.So, the cylinder of planker (10) (23) is started, its contact top (24) is contacted with planker (10); By cylinder (23) planker (10) is pushed back the origin-location again.Like this, double-ply bag (1) whenever is sent certain length, and this working procedure just comes again; So that can in each fixed length, carry out the heat seal sealing to inner bag (3).
The present invention is as above illustrated, and the inner bag of double-ply bag is to adopt than the low material of outer bag softening point to make.Because the temperature of heat seal containment member is set near the temperature the inner bag softening point, just can only carry out heat seal to internal bag from outer bag outside.And can not damage the intensity of outer bag and inner bag, and sealing is very high, can prevent the infiltration of moisture absorption and gas, the purpose of phase to reach fully.
Claims (1)
1, a kind of method that inner bag in the outer bag of double-ply bag is carried out the heat seal sealing, it is characterized in that: above-mentioned inner bag adopts than the low material of above-mentioned outer bag softening point and makes, inner bag is clipped between a pair of heat seal containment member with outer bag, the temperature of above-mentioned heat seal containment member to fixing on the temperature that is bordering on the inner bag softening point, is only carried out the inner bag heat seal encapsulating method of the double-ply bag of heat seal sealing to internal bag by the heat seal containment member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85102065 CN1008253B (en) | 1985-04-01 | 1985-04-01 | Method for heat-sealing inner envelope of double envelope assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85102065 CN1008253B (en) | 1985-04-01 | 1985-04-01 | Method for heat-sealing inner envelope of double envelope assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85102065A CN85102065A (en) | 1987-01-31 |
| CN1008253B true CN1008253B (en) | 1990-06-06 |
Family
ID=4792237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85102065 Expired CN1008253B (en) | 1985-04-01 | 1985-04-01 | Method for heat-sealing inner envelope of double envelope assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1008253B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69224460T2 (en) * | 1991-10-09 | 1998-06-10 | Totani Giken Kogyo Kk | Device for hot welding two superimposed plastic films |
| CN105059623B (en) * | 2015-07-17 | 2017-09-12 | 广西壮族自治区农业机械研究院 | A kind of interlayer inner bag heat sealing device |
| CN107934058A (en) * | 2017-10-16 | 2018-04-20 | 安徽工程大学 | A kind of granular goods double casing inner bag folder bag mouth device |
-
1985
- 1985-04-01 CN CN 85102065 patent/CN1008253B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85102065A (en) | 1987-01-31 |
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