CN1197028A

CN1197028A - Zipper strip and method of positioning strip transverse longitudinal axis

Info

Publication number: CN1197028A
Application number: CN98103738A
Authority: CN
Inventors: 阿特·马林; 唐纳德·L·范埃登; 小詹姆斯·G·科尔; 迈克尔·J·麦克马洪
Original assignee: Illinois Tool Works Inc
Current assignee: Illinois Tool Works Inc
Priority date: 1997-04-24
Filing date: 1998-02-12
Publication date: 1998-10-28
Anticipated expiration: 2018-02-12
Also published as: KR19980079658A; PT873856E; AR011429A1; ATE292015T1; EP0873856A3; EP0873856B1; JPH10296884A; BR9800314A; NZ329573A; EP0873856A2; KR100301420B1; DE69829523D1; DE69829523T2; CA2226903C; CN1070445C; MX9800739A; JP2006218323A; CA2226903A1; AU692131B1; ES2238748T3

Abstract

A zipper strip for a reclosable bag or package includes a male interlocking profile and a female interlocking profile. The male interlocking profile includes a male interlocking member and a male web coextruded therewith. In like manner, the female interlocking profile includes a female interlocking member and a female web. The male interlocking member snappingly engages into the female interlocking member to join the profiles to one another. One of the male and female webs is wider than the other in at least one of two directions from the male and female interlocking members, the greater width being represented by at least one flange extending widthwise beyond the other web. The zipper strip is designed to be attached to thermoplastic sheet material by sealing the at least one flange thereto without sealing the male and female webs to each other. Methods for securing the zipper strip to thermoplastic sheet material, and for making packages on a horizontal form-fill-and-seal machine, are also disclosed.

Description

Padlock band and the method for transversely locating thereof at longitudinal axis

This part is the continual-connecting-part (CIP) of No. 08/651,977, the 1996.05.21 U.S. Patent application of putting on record.

The present invention relates to pack into perishable items and other commodity so that be sold to the plastic bag of client's the sort of Reclosable at the retail mouth.More specifically say, the present invention relates to horizontal or vertical shaping-filling-and sealing (FFS) machine on the plastic bag of the Reclosable making and fill simultaneously, wherein the plastics interlocking padlock of each bag be located at the horizontal direction of moving into of thermoplastic sheets on and this sheet material forms on the FFS machine and can open and close a bag usefulness.

The present invention is related to the improvement of packing technique; and can be used to make thermoplastic sack and the bag that extensive stock is used; particularly working as food must be kept in moistureproof and the sir-tight packing; leakage can not be arranged before taking out inclusion opening for the first time, it is closed again so that particularly suitable when protecting its interior remaining food to open the also available padlock in back.

Said technology has goodish development, but still can improve so that raise the efficiency and cost effectiveness (CE).

So far still have a problem hindering and use the continuous sheet material that padlock is housed to produce plastic bag, promptly extend through with a bag or bag place bag or wrap the leakproof sealing that is difficult to obtain a satisfaction with the next sealing district, edge (traversing) that separates at padlock with by the thin film region that it engages.This problem occur in when padlock with to be used for forming the sense of motion of thermoplastic sheets that can open and close bag on the FFS machine consistent or longitudinally the time, in this case, sealing band iron laterally or the edge also must flatten and the sealing padlock when sealing is used for making the thermoplastic sheets of plastic bag simultaneously.Will be consistently and successfully to finish this part work be very difficult, this can reflect from many bags that can seepages occurring.

Once made many this problems of attempting solving.Having a kind of in adopted method once is to substitute vertical padlock with horizontal padlock.When being provided with this padlock, the transverse sealing band iron that links with the FFS machine just can not flatten padlock when carrying out the edge sealing, but they can be under the situation of not flattening padlock across the land with the padlock sealing on thermoplastic sheets.

The present invention is to provide horizontal padlock so that on horizontal or vertical FFS machine, make plastic bag to be opened/closed or use during bag.Say that more specifically the present invention also provides the padlock band is fixed on method on the thermoplastic sheets across the land when the padlock band is provided, and this sheet material is used for producing and can opens and closes bag on the FFS machine.

Therefore, the present invention for shapings-fillings-and sealer on make and fill and can open and close bag or wrap the padlock band of usefulness.Particularly, this padlock band is designed to be and can be provided with by moving into laterally of machinery with the thermoplastic sheets that is used for making plastic bag.

The padlock band comprises a public interlocking section bar, and public interlocking part and public abdomen bar and a female interlocking section bar of squeezing out are together arranged on it, and the female interlocking part and the female abdomen bar that squeeze out are together arranged on it.Public interlocking part can be snapped in female interlocking part so that public interlocking section bar and female interlocking section bar are linked together with being pressed.

Make in the padlock band of closure at least one direction in the both direction that public interlocking part and female interlocking part leave mutually, in public abdomen bar and the female abdomen bar is wideer than another.Why one of broad have bigger width to be because it has a flange also may extend to outside another abdomen bar in both sides in a side in public abdomen bar and the female abdomen bar.As a result, the padlock band is need only be with the flange sealing of public abdomen bar or female abdomen bar thereon and can not will public abdomen bar is in the same place with female abdomen bar sealing when laterally being attached on the thermoplastic sheets.

The present invention also comprises a kind of method so that produce plastic bag or be used for this padlock band along laterally being attached on the thermoplastic sheets during bag on the FFS machine.In this case, when thermoplastic sheets or when advancing on the FFS machine (stepping ground or continuously), whenever sheet material one stops, one section padlock band just is linked on it.

This method comprises following work step: above-mentioned the sort of padlock band is provided, then with one section padlock band along being horizontally installed on the thermoplastic sheets, of broad in public abdomen bar and the female abdomen bar is contacted with sheet material, and flange is fixed on the sheet material travel direction.Then with the flange sealing to sheet material and can not will public abdomen bar is in the same place with female abdomen bar sealing.Some concrete grammar that will the section of one-tenth padlock band be set on the thermoplastic sheets will illustrate below.

At last, the present invention also comprise a kind of horizontal shaping-filling-and sealer on make the method can open and close plastic bag.This method comprises following work step: a kind of thermoplastic sheets is provided, the isolated padlock band section of as prescribed distance is housed as mentioned above on it.The a/s then interval of product belt conveyor is placed into product on the thermoplastic sheets.Then two sides of sheet material are surrounded in opposite directions that product collapses and sealing forms a pipe box that surrounds product together.

Then with this pipe box along horizontal sealing on each padlock band section and can not will public and mother's the abdomen bar sealing of interlocking section bar be in the same place.Then laterally cut this pipe so that make each plastic bag finished and next separating on the edge near each padlock band section.

The present invention now will do more detailed explanation in conjunction with the accompanying drawings.

Fig. 1 is the drawing in side sectional elevation of first embodiment of padlock band of the present invention;

Fig. 2 is the drawing in side sectional elevation of padlock band second embodiment;

Fig. 3 is used for the padlock band is contained in the transparent view of the device on the thermoplastic sheets;

Fig. 4 is the transparent view that is used for the another kind of device of this purpose;

Fig. 5 is the transparent view that also has a kind of device that is used for this purpose;

Fig. 6 is the scheme drawing of a horizontal FFS machine;

Fig. 7 is the planar view that is used for producing the thermoplastic sheets that padlock band section is housed of plastic bag on horizontal FFS machine; And

Fig. 8 is the drawing in side sectional elevation according to the present invention and the simplification of formation plastic bag on horizontal FFS machine.

Specifically consult above-mentioned each figure, Fig. 1 is the drawing in side sectional elevation of first embodiment of padlock band 10 of the present invention.Padlock band 10 comprises a public interlocking section bar 12 and a female interlocking section bar 14.Public interlocking section bar 12 has a public interlocking part 16, and its cross-sectional plane can be arrow-shaped, perhaps as shown in Figure 1, is an asymmetric arrow-shaped, designs like this to make that padlock band 10 is easier to be opened from a side.Female interlocking section bar 14 has a female interlocking part 18, and it has two parts that curve inwardly, and forms a container or groove, and public interlocking part 16 can be pressed the ground interlock within it.

Public affairs all have with public and female interlocking

part

16,18 with female

interlocking section bar

12,14 pushes the abdomen bar of coming out.Can see that the abdomen bar 20 of public interlocking section bar 12 is wideer than the abdomen bar 22 of female interlocking section bar 14.Abdomen bar 20 has guide's flange 24 and to trail flange 26 as a result, and these two flanges constitute abdomen bar 20 quantity wideer than abdomen bar 22 together.As will be appreciated that afterwards, the guide and

trail flange

24,26 why cry like this be because of, when padlock band 10 is installed on the thermoplastic sheets that is input in the FFS machine, guide's flange 24 " takes the lead in " and will receive in the machinery along the padlock band 10 of horizontal installation, trails flange 26 and then " trails " or bring up the rear.At last, guide's flange 24 rests in the mouth of plastic bag or bag and plastic bag is manufactured and by being filled with commodity on the FFS machine.Though the public interlocking section bar 12 shown in the figure has the guide concurrently and

trails flange

24,26, these two

flanges

24,26 are not so yet but alternately are the part of female interlocking section bar 14.

Padlock band 10 is arranged on the thermoplastic sheets across the land when making plastic bag or bag on the FFS machine.Interlocking section bar public affairs and mother is attached at together as shown in Figure 1 when being applied to padlock band 10 on the thermoplastic sheets, and rests on the sheet material with public interlocking section bar 12.Hot weld envelope band iron 28 or analogue are applied in the guide and trail the appearance of advising as arrow among Fig. 1 on the

flange

24,26, thereby with public interlocking section bar 12 sealings to the thermoplastic sheets (not shown), and not with abdomen bar 22 sealings of female interlocking section bar 14 to the abdomen bar 20 of public interlocking section bar 12.

Hot weld closure material 30 can be laid in, and the outside of abdomen bar 20 of public interlocking section bar 12 comprises the guide and the inboard of trailing the outside of

flange

24,26 and trailing flange 26 also has the outside of the abdomen bar 22 of female interlocking section bar 14, so as to make they easily by sealing to thermoplastic sheets.Trailing the also available row's aperture of flange 26 can separate it with the remainder of abdomen bar 20.

Before sheet material arrives at shoulder on the vertical FFS machine, or before sheet material enters the FFS machine, the guide and the outside of trailing

flange

24,26 just are linked on the thermoplastic sheets.After, side is become sealing of a fin or overlap joint by sealing when thereby sheet material is formed a pipe by turning back, sheet material is not needed with the facial sealing of the opposition of two

abdomen bars

20,22 together by the outside of sealing to inboard and two

abdomen bars

20,22 of trailing flange 26 at that time.Fig. 2 is the drawing in side sectional elevation of second embodiment of padlock band 40 of the present invention.Point out with identical label in Fig. 2 with above-mentioned padlock band 10 components identical in the padlock band 40.The visible padlock band 40 of comparison Fig. 1 and 2 lacks trails flange 26, but all identical with padlock band 10 aspect all at other.As padlock band 10, padlock band 40 is arranged on the thermoplastic sheets when also making plastic bag or bag on the FFS machine across the land.Public interlocking section bar 42 rests on the thermoplastic sheets.Hot weld envelope band iron 28 or analogue are applied on guide's flange 24 as arrow is advised among Fig. 2, public interlocking section bar 42 hot welds are sealed on the thermoplastic sheets (not shown) and not with abdomen bar 22 sealings of female interlocking section bar 14 to the abdomen bar 44 of public interlocking section bar 42.As said in the past, though public interlocking section bar 42 is provided with guide's flange 24 shown in the figure, guide's flange 24 is not so yet but alternately is the part of female interlocking section bar 14.

Padlock

band

10,40 shown in Fig. 1 and 2 respectively can be come out by the resin material such as low-density polyethylene (LDPE) extruding of poly-mer.Hot weld closure material 30 can lay as shown in the figure like that with the method for co-extrusion pressure or coating after 10,40 extruding of padlock band are come out.Ethylene vinyl acetate (EVA) copolymer can be used as hot weld closure material 30.

Fig. 3 is a transparent view that is used for padlock band 10 is installed to the device on the thermoplastic sheets 50, and sheet material 50 is transported to the FFS machine along direction shown in the arrow at that time.Thermoplastic sheets 50 is moved by quantitative length off and on, and this length equals to produce the length of plastic bag.

When thermoplastic sheets 50 is temporarily stopped, one section padlock band 10 just across the land sealing its towards on a side.Padlock band 10 unshowned reel or other from Fig. 3 are issued out and are transferred for the source, and by a stationary fixture 52, and by a reciprocal shuttle 54 that comprises anchor clamps 56 and plug-in strip 58, plug-in strip 58 is to be used for cutting off padlock band 10 when needing.

Shuttle 54 just carries out crank motion one time when thermoplastic sheets is temporarily stopped.When shuttle 54 outwards moved on the thermoplastic sheets 50, anchor clamps 56 just were engaged on the padlock band 10, and stationary fixture 52 is released, so shuttle 54 is from the reel one section padlock band 10 of leaving behind.The outer end of shuttle 54 is a probe 60, and this probe makes guide's flange 24 of padlock band 10 and trails flange 26 and is able to stretch out from this side respectively.

As shown in Figure 3, shuttle 54 is on the retracted position.When it is on the unshowned forward facing position, in 60 spaces that extend between back welding envelope jaw 64 that overhead welding seals jaw 62 and it is corresponding, be located at thermoplastic sheets 50 downsides of popping one's head in.Guide and trailing between the sealing

jaw

62,64 that

flange

24,26 also all extends outward to top and bottom.When this two

jaw

62,64 is closed, hot weld envelope band iron 28 just with

flange

24,26 sealings on thermoplastic sheets 50.Then this two

jaw

62,64 is opened; Cut out next section padlock band 10 with plug-in strip 58; Anchor clamps 56 are released, and anchor clamps 52 are closed.Shuttle 54 moves back on the position shown in Figure 3 subsequently, and thermoplastic sheets moves a segment distance, and this distance equals to make the length of plastic bag, so said process repeats.

Fig. 4 is for installing to padlock band 10 transparent view of the another kind of device on the thermoplastic sheets 50.As in the past, thermoplastic sheets 50 is transported to the FFS machine along direction shown in the arrow, and is moved a distance off and on, and this distance equals to make the length of plastic bag.

When thermoplastic sheets 50 is temporarily stopped, one section padlock band 10 just across the land by sealing sheet material towards on a side on.Padlock band 10 unshowned reel or other from Fig. 4 are issued out for the source, pulled out by first anchor clamps 70, first anchor clamps 70 and second anchor clamps 72 are made front-rear reciprocation movement along mechanism 74 synchronously, and hold with a firm grip guide's flange 24 of padlock band 10 of first and second anchor clamps 70,72 makes padlock band 10 cross thermoplastic sheets across the land.When second anchor clamps 72 are on the throne with 10 clampings of padlock band padlock band 10 just by sealing thermoplastic sheets 50 towards on a side on.Be provided with a fixing plug-in strip 76, when needs, can cut off padlock band 10 with it.

When thermoplastic sheets 50 was temporarily stopped, second anchor clamps 72, the one section padlock band 10 that plug-in strip 76 cuts off that just will be fixed outwards took position shown in Figure 4 across the land to.Simultaneously make another section padlock band 10 move through plug-in strip 76 with second anchor clamps, 72 synchronization-moving first anchor clamps 70.Overhead welding envelope jaw 62 and corresponding, as to be located at thermoplastic sheets 50 downsides back welding envelope jaw 64 thereof are with guide's flange 24 of padlock band 10 and trail flange 26 sealings on sheet material 50, and second anchor clamps 72 are clamped in guide's flange 24 on the sheet material 50 at that time.First anchor clamps 70 and second anchor clamps 72 are shunk back from position shown in Figure 4 then, and first anchor clamps 70 move back to a position that is close to plug-in strip 76 along padlock band 10, and second anchor clamps 72 move back to the upstream of plug-in strip 76.Then thermoplastic sheets 50 moves a segment distance, and this distance equals to make the length of plastic bag.So said process repeats.

Fig. 5 is used for padlock band 10 is contained in the transparent view of the another kind of device on the thermoplastic sheets 50.Thermoplastic sheets 50 is transported to the FFS machine in a direction indicated by the arrow, and as in the past, it is moved a distance off and on, and this distance equals the length of the plastic bag of producing.

When thermoplastic sheets 50 is temporarily stopped, just have one section padlock band 10 across the land sealing to sheet material 50 on a last side.Padlock band 10 is provided out and is pulled out by a punched tape 80 for the source by the unshowned reel of Fig. 5 or other, the cell 82,84 that this punched tape 80 is being carried under one's arms and linked with vacuum or suction source.Suction by punched tape 80 is used to transport padlock band 10.Be provided with a fixedly plug-in strip 86 that supplies padlock band 10 to move through, when needs, can the padlock band be cut off with this plug-in strip 86.

When thermoplastic sheets 50 was temporarily stopped, punched tape 80 is just pulled out one section padlock band 10 made it cross thermoplastic sheets 50 across the land.Guide's flange 24 of padlock band 10 and trail flange 26 and extend to outside the both sides of punched tape 80 and cell 82, because punched tape 80 and cell 82 extend in the space between overhead welding envelope jaw 62 and corresponding, as the to be located at thermoplastic sheets 50 downsides back welding envelope jaw 64 thereof, though guide and to trail

flange

24,26 protruding is still between top and bottom sealing jaw 62,64.At this moment vacuum is turn-offed.When two jaws are closed, hot weld envelope band iron 28 just with

flange

24,26 sealings on thermoplastic sheets 50.So two

jaws

62,64 are opened, make thermoplastic sheets 50 move a segment distance, this distance equals the length of made plastic bag.Then vacuum is connected; Downcut one section padlock band 10 with plug-in strip 86; Punched tape 80 can make this part padlock band 10 cross thermoplastic sheets 50 across the land again, and said process just can repeat.

Be used for that padlock band 10 is contained in any in the said apparatus on the thermoplastic sheets 50 and all can on horizontal or vertical FFS machine, be used for making plastic bag.With regard to this respect, Fig. 6 is the scheme drawing of a horizontal type device.The reel 90 of a thermoplastic sheets 50 is provided out according to the length of the manufacturing and the plastic bag of filling with sheet material 50 off and on.As shown in Figure 7, padlock band 10 can be comprised the be laid in central authorities of thermoplastic sheets 50 of any padlock applicator in above-mentioned three kinds of devices, connects to a seam overlap joint or fin thereby stay enough sheet materials along two sides 96 of sheet material 50 so that collapse in opposite directions.

Being provided with an accumulator 94 is used for changing the intermittent moment of thermoplastic sheets 50 into continuous movement.

Have a product belt conveyor 98 packaged products 99 to take on the wrapping machine 100, this wrapping machine has be shaped 102, sealing districts 104, district and a horizontal sealing district 106.In the district 102 that is shaped, two sides 96 of sheet material 50 are upwards turned back and are wrapped on the product.In sealing district 104, these two sides 96 by mutually with fin or lap side seam sealing, thereby form a continuous films pipe and within it with product and padlock band parcel.In horizontal sealing district, to sheet material 50, two abdomen bars do not have sealing together to two abdomen bars of padlock band 10 by sealing, and the plastic bag of making, is taken away by taking belt conveyor 108 away by separated from each other then along 112 lines.

Fig. 8 draws according to above-mentioned formation and the plastic bag 110 of product 99 is housed.In this plastic bag, one top (wide) flange 26 in two section bars by sealing to form at the bottom of the plastic bag 114 and the film abdomen bar on plastic bag top 116 on.The wide flange 24 of another of this section bar is fixed to and forms at the bottom of the plastic bag on 114 the film abdomen bar, and the strait flange 22 of another section bar then only is fixed on the film abdomen bar that forms plastic bag top 116.

The personnel that have general technical ability in the industry obviously can modify above-mentioned these, but the present invention can not be revised like this it are exceeded outside the scope of claims.

Claims

A Reclosable the bag or the bag usefulness the padlock band, said padlock band comprises:

Article one, public interlocking section bar, the public abdomen bar that said public interlocking section bar has a public interlocking part and to squeeze out simultaneously; And

Article one, it is interior so that said public affairs and female interlocking section bar are attached at a will that female interlocking section bar, female abdomen bar that said female interlocking section bar has a female interlocking part and to squeeze out simultaneously, said public interlocking part can be engaged in said female interlocking part with pushing,

It is characterized by, in said public affairs and the female abdomen bar one is greater than the width on another at least one direction in the both direction that said public affairs and female interlocking part leave mutually, so having bigger width to be, it have at least a flange on width, to extend in said public affairs and the female abdomen bar outside another abdomen bar

Therefore said padlock band can be attached to said at least one flange on the thermoplastic sheets and can not will said public affairs are in the same place with mother's abdomen bar sealing.
2. according to the padlock band of claim 1, it is characterized by, in said public affairs and the female abdomen bar one than another in the both direction that said public affairs and female interlocking part leave mutually just in one direction width be greater, have so it has bigger width to be outside another abdomen bar that extends on the direction of a flange in said both direction in said public affairs and the female abdomen bar.
3. according to the padlock band of claim 1, it is characterized by, in said public affairs and the female abdomen bar one all is greater than another width on the both direction that said public affairs and female interlocking part leave mutually, has two flanges all to extend on two opposite directions that said public affairs and female interlocking part leave mutually outside another abdomen bar in said public affairs and the female abdomen bar so it has bigger width to be.
One kind shaping-filling-and the sealing machine on when producing the plastic bag be provided with horizontal padlock band or bag with the padlock band along the method that is horizontally installed on the thermoplastic sheets, the distance that said sheet material advances at every turn equals the length of made plastic bag or bag, when said sheet material is stopped, one section padlock band is just loaded onto, and said method comprises following work step:

A padlock band is provided, said padlock band has public affairs and female interlocking section bar of interlocking, one in said public affairs and mother's the interlocking section bar than the abdomen bar that a broad is arranged on another at least one direction in two side directions, so its abdomen bar that broad is arranged is because have at least a flange to extend on this direction;

One section said padlock band along being horizontally installed on the said thermoplastic sheets, being made the section bar that has said broad abdomen bar in said public affairs and mother's the interlocking section bar contact with said sheet material, and said at least one flange is oriented on the sense of motion of said sheet material; And

With said at least one flange sealing on said thermoplastic sheets and said two abdomen bar sealings of can not will said public affairs and female interlocking section bar are in the same place.
5. according to the method for claim 4, it is characterized by, in said public affairs and the female interlocking section bar one has the abdomen bar of broad than another on two side directions, so its abdomen bar that broad is arranged is because there is flange to extend on each side directions.
6. according to the method for claim 4, it is characterized by, one section said padlock band is finished by a reciprocal shuttle along the work step that is horizontally installed on the said thermoplastic sheets, said reciprocal shuttle has anchor clamps and plug-in strip, said anchor clamps are used to said padlock band from pulling out for the source, along laterally delivering on the said sheet material, said plug-in strip is used to cut out the length of said padlock band.
7. according to the method for claim 4, it is characterized by, is to be finished by the reciprocal anchor clamps that a pair of plug-in strip that is fixed separates one section said padlock band along the work step that is horizontally installed on the said thermoplastic sheets, said two reciprocal anchor clamps are by said at least one flange said padlock band of holding with a firm grip, anchor clamps in the said reciprocal anchor clamps will be moved on on the said thermoplastic sheets and at the said one section padlock band of said sealing work step clamping by said one section padlock band that said plug-in strip cuts, and another anchor clamps in the said reciprocal anchor clamps pull to said plug-in strip with said padlock band from one for the source.
8. according to the method for claim 4, it is characterized by, one section said padlock band is finished plug-in strip by a vacuum transport belt device and along the work step that is horizontally installed on the said thermoplastic sheets, and said vacuum transport belt device is moved said padlock band and will be moved on the said thermoplastic sheets by the padlock band that said plug-in strip cuts into said length to from one for the source.
9. according to the method for claim 4, it is characterized by, the motion of sheet material is quantitative.
Horizontal shaping-filling-and the sealing machine on make the plastic bag of Reclosable or a kind of method of bag, said method comprises following work step:

A kind of thermoplastic sheets is provided, as prescribed is equipped with one section padlock band across the land in central authorities at interval on it, along its two sides then is the sheet material that does not have the padlock band, said padlock band has interlocking, public and female interlocking section bar, one in said public affairs and mother's the interlocking section bar than the abdomen bar that has a broad on another direction in two side directions, so its abdomen bar that broad is arranged is because have at least a flange to extend on this direction, a said section bar that has broad abdomen bar in said public affairs and mother's the interlocking section bar is linked on the said sheet material, said horizontal shaping-filling-and the sealing machine on said at least one flange be oriented on the sense of motion of said sheet material, said at least one flange by sealing on the said sheet material so that the public affairs of said interlocking and female interlocking section bar are attached on the said sheet material;

Provide a product belt conveyor so that will packaged products be placed on the said thermoplastic sheets;

Said two sides of said thermoplastic sheets are turned back in opposite directions and be enclosed on the said product;

Thereby two side sealings of said sheet material are formed a pipe box that surrounds said product together;

Said pipe box to said each section padlock band and is not in the same place the said abdomen bar sealing of said public affairs and mother's interlocking section bar along horizontal sealing; And

Said sealed-in pipe box is cut so that each plastic bag of finishing is separated with next.