JPS60134852A - Bag for transport - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

The present invention relates to a tFilf shipping bag made of thermal resin,
(-j1 layer of polyethylene or 1ll with multiple layers)
It pertains to bags made of durable thermoplastic t(! 1L
It is used for packaging, transporting and flavoring products. These fakes require another σ month I1 to close the bag.
1゛! Open rliM Ml that requires 11111 (
or the end with a valve (;r)
It is 7J), whether you have E1 attached or not. The most commonly accepted thermoplastic lubricant bags are 11 (W; lid polyethylene or rubber).
11 pieces of polyethylene (11 pieces of polyethylene) and 1 type of simultaneous extrusion of these 'q:N 1lij,
It is manufactured from a film made by twin-flation film processing using co-11 incorporation of the same layers. Films are primarily converted into bags by various sealing techniques. These simple items with a fat film can be sewn into bags (4)
However, this method weakens the film considerably and creates undesirable holes in the bag, which can be penetrated to prevent moisture and moisture.
Other contaminants may enter or cause stone burning contamination. Another type of bag is made by folding the ends of the bag into multiple 1D folds and gluing them together, but this method requires a very large amount of secondary processing equipment; However, it is expensive and difficult to develop a device for gluing the two components together.
The disadvantage is that it is very difficult. Because of these drawbacks, it is recommended to use the thermal IM method4! The better one is -. At present, heat-resistant thermoplastic bags are commonly used for the packaging of low volume, non-hazardous products. However, the use of such bags for 11 dangerous frozen products at 1% limits the 4 related components.
Compared to 14-layer multilayer paper bags or woven plastic wares, the bags are very limited because they offer less resistance to punctures and tearing. One with a desirable resistance to punctures and scratches of 1 jr is lT% S! l'i IJ! A marine plastic resin film made from a -dimensional ethylene polymer, such as a -f polyethylene or a -dimension polyethylene, is subjected to uniaxial cold stretching of the film, and then a typical The drawing-induced stretching of one base paper can be achieved by laminating these two layers in such a way that they form a 90" angle with the drawing-induced stretching of the other base paper. It is known in the art that -Ivm-stretched sheets of polyethylene I/'i can be laminated one on the other with the directions of stretching orthogonal to each other. The composite laminated films thus made, commonly known as orthogonal plastics, orthogonal laminations or direct laminated films, have a higher l・II
It has high resistance to g% Yakagi 5 Kei. Thus, this type of film requires expensive and dangerous single-use, sutured, single-use materials.
It is used for transportation bags containing 27 items. However, one significant drawback is that these materials cannot be reliably thermally bonded with conventional bag making machinery to produce bags for durable use. Despite the aforementioned advantages of thermobonded bags, this has considerably hindered their implementation and acceptance on the market. , 榢<Preferably, we are now not cold-stretched (
By inserting two small layers of low-density polyethylene (not axially stretched) between the direct ancestral layer films to be thermally bonded together to form both sides of the bag,
It has been found that the drawbacks of this market unacceptable thermal bonding can be overcome to produce improved durable Pni shipping bags. Thus, the high strength orthogonal laminated film and the thermal 'F = f? During the incarnation of the bridge, a bridge is formed that allows it to be accepted on the market. This is accomplished by inserting low-density polyethylene and swamping two straight 35 laminated films to create a bonded bond, f,4! l! Even though the 1α cross-laminated film is immediately adjacent to the cut-out area, the heat during the termination destroys its cold stretch, resulting in a loss of film strength in this peripheral area. The fact that the seals made in this way are so weak and deafening in marginal areas that their use in durable transfer bags is unacceptable In contrast, the plastic resin 1'i+ & shipping bags are now being replaced with suitably modified conventional packaging ( It has been found that 4iζ can actually be fabricated by thermal bonding techniques using 4iζ technology. And in its simplest form, the invention provides a thermal oJ recess l (! !1 A plastic shipping bag is provided, each piece consisting of 1 cross-laminated layers of at least two sheets of uniformly oriented polyethylene glued together, said 411 layers being , one is hot-bonded 71'1 to the other to create a hot-bond area, where Crt.
Between the stacked layers J, two layers of low density polyethylene are inserted in the V+ area. Intercalated valley layer of low tlJ degree polyethylene, i
The two sums 1a are laminated to the surface of the layer of ff cross-section high and to form a seam in the hot-bonded area.
The bridge can be made of a single sheet of polyethylene of sufficient thickness in the areas heated 1+Q If to create the bridge, so as to be received between the layers. However, these inserted eyebrows of low-density polyethylene can be used to remove the laminated layers on the entire surface of each of the laminated layers.
The heat-bonded area can be extended at λ- in order to achieve the desired effect. Thus, each of the layers of the i11 cross-layer forming the transport layer has a low %9j layer deposited thereon. Of course, the structure with a layer of polyethylene is 41'i I
(The /ζ layer does not require that the heat be bonded only in the heat bonded areas where the fingers were attached. These areas should be In between, 15 minutes of the bulk of the circumference of Be, 2, which is the place where υ is connected by adhesion, can be formed by 11.j. Assuming that the outer fill is a laminated sheet on top of the layer, −r+forced field R[
In this case, each sheet must be made of two orthogonal AI'' (layers of layers, the frame in which the receiver is inserted must be of sufficient thickness to make a

[Low density i on each layer of one layer]
Many @ membranes of polyethylene are not sufficient,
And the minimum thickness of low density polyethylene is U, O12
We have found that it is better to exceed &':L 0.0381 rm (1,5 mil). We are trenching, each layer of orthogonal laminates that make up the bag is made of one laminate of low grade polyethylene to provide thermal collapse, which is acceptable for use in durable bags. I also found out that it is necessary to have a sheet that is For reasons discussed below, a single intercalated layer of bass 1W polyethylene, represented either as a laminated sheet, as a sheet, or as a separate layer, is not satisfactory. Therefore, a double layer of polyethylene is desired. In a more preferred configuration according to the invention, the inserted (
It Vf.l- of 1 degree polyethylene reveals a total of separate layers laminated on both sides of the bag. Accordingly, the present invention provides a bag as described above, wherein each of said layers of low density polyethylene constitutes an inner layer of the bag. In this preferred bag configuration, each side of the cross-laminated layers has an associated layer of low density polyethylene embedded therein. In this arrangement, each of the inserted layers can be thought of as being on the inner (1!I+) side of the bag, while the two orthogonally laminated layers are on the two outer sides. Therefore, the present invention further provides a 1.1i bag made of heat-receiving plastic 1fl fat with a heat-receiving surface and a back surface,
Each of said spaces consists of an orthogonal laminate of at least two sheets of uniaxially oriented polyethylene bonded together.
It consists of /f:f of 1+1 and an inner part made of low-tight rudder polyethylene that is thermally bonded to it. When a bag containing a worship product is dropped, blood increases by +11.
．． It prevents 3ie from coming out of 17 items, so 2! from the product in the event of an impact! I! Most of the Nb energy can be transferred to the bag. This energy is absorbed by the bag's surface stretching. The maximum force that forms at the surface of the bag during this absorption of energy depends on the elasticity of the surface of the bag. If the #:+1:lI force created by the impact is greater than the maximum tensile yield force on the face of the bag, the bag will be permanently stretched. When this maximum force is υ greater than the maximum tensile strength of the surface, the bag will break at its weakest point. The maximum tensile strength p of the thermal bonding must be greater than the tensile yield strength between the bags in order to maximize the impact strength of the thermal bonding. 'Valeron' (VAL
In a dynamically stretched orthogonally laminated cold-stretched film such as EuON), the tensile strength of the film is even stronger than the maximum tensile strength of the plastic (1i1 fat body) from which the film is made. [1Iiii 1arinateds
aal) means 1 q of rolling stones that do not destroy the film and therefore make it relatively clean.
It is understood in the art that this is an adhesion in which the bonding interface can be separated by self-separation of the bonded film. On the other hand, in the art, "bonding" means that the film is actually bath-bonded at its interface, so that it cannot be bonded by physical or chemical means.
It is understood that the adhesion is made under a combination of pressure and heat at or above the crystallization melt temperature of the film in order to ensure clean separation and no a+. It has now been discovered that the thermal bonding as described above further enhances the sealing strength when molded together with a V14 overlapping anti-layer seal. Therefore, this Akebe Sakiya special rt
The rhyme “Netsujisushi” used in the claims is,
The single-layer anti-laminar seal, meaning thermal bonding as defined above, having a mating laminated seal construction having a length of at least 2 mrn. In order to prevent stresses from forming only at the junctures of the stretched and unstretched films, these layers are separated by a multilayer Ah-layer molding (laminate) in which the stresses are discontinuously connected. It has been found that the materials must be laminated together and glued together so that they are also absorbed. Stretching a film is a two-dimensional process, i.e. if the film is stretched in one direction, then
It is believed that constriction occurs in other directions.
+￥ will be charged. Therefore, if the inner unstretched layer is fully ivt layered onto the non-elastic stretched outer 9 itl layer, the laminate as a whole will exhibit constricted characteristics. Even if each pair of stretched and unstretched layers could be laminated arbitrarily to the other for the entire length of the bag, the laminate molding would still be in close proximity to the thermal bond and the laminate between the layers would still be 90% It is necessary. A length of only 5 to 10y++x is the most obtrusive length for the contiguous laminated seals required for thermal bonds. Furthermore, we have shown that the unstretched layer of unstretched polyethylene between the two stretched layers is separated into two layers under the constant pressure that occurs when bags are filled and stacked. It has been found that the practical life of the present invention is reduced because the A11 layer of sealing between the layers is separated from the reed. As used herein, the term "thermoplastic" refers to a particularly commonly used material that can provide a film, monolayer, or layer of suitable thickness and strength for use in durable shipping bags. 7 of polyethylene and boabutadiene family polymers
1. Q iiJ'plastic 1JE +lI+fat. Examples include high-density polyethylene, low-density polyethylene, and 1,2 polybutadiene. It refers to ethylene homopolymers and copolymers such as ethylene and their blends.
It is always the case that there is no limit to only the actual or true inside surface of the bag that comes into contact with the product. 7 and Toeha Uchi (1
The nfJ called i11 is a bag with many surfaces in which the layer is in contact with the inner surface of 1 or not,
This also includes the case where the layer is composed of one or more layers of unstretched low-density polyethylene. Similarly, “
The term ``external surface'' is not limited to only the outermost layer; it is always υ. Therefore, the principles described in this book should also be applied to the production of bags with surfaces consisting of more than two separate layers, without compromising the possibility of blue color. Thus, the book) 36 Ming includes bags with three layers, four I, = Jin, etc. important and fundamental t1kel'i"i
4.26 Pointed heat on the inner side of the cross-laminated layer of polyethylene to weaken the thermal bond. 4.26 The inside of the valley of the bag so that the cross-laminated layer of polyethylene does not come into contact with another cross-laminated layer of polyethylene in the garnish area. This means that at least one layer of unstretched, low rfj 1B polyethylene is added to the 121-thick layer of 121-thickness, which is between 4+1 and 4+1 layers. I
Insertion of low-density 1ti polyethylene corresponding to either the self-crossing 4j (as a laminated sheet in the layer of b.1 or as a separate 1) degree layer weight or inner α11 The 1r bow and the 1r bow made by the inflation method are molded with ethylene. However, cast film is also contaminated (for this application). It is readily apparent that the cross-laminated layers are preferably made of low-density polyethylene, more preferably one-dimensional low-density polyethylene, and even more preferably one-dimensional low-density polyethylene. is composed of at least two sheets of high-density polyethylene. If the layer of !μA!'t Ia consists of a sheet of uniaxially stretched high-density polyethylene, then, for example, unstretched ll?lIs The laminated layers can be bonded together with jΔ of In-polyethylene.
L;! ! When constructed from sheets of Y polyethylene, these can be adhesively bonded with unstretched, low dimensional polyethylene, or preferably unstretched, dimensional hY expanded polyethylene. In one form, the bag according to the present invention includes unstretched ink.
'1□1f Two inner linings of polyethylene film, U73 chair 1, li'1 from the surface! , they are thermally bonded at their periphery to a polyethylene film. However, the inner 1111I lining or surface of low density polyethylene is
Assuming that there is not enough heat formation to cause a significant loss of film strength in the layers of the orthogonal product 11a, their individually facing It+l I/) 1′ of the song,! 11 minutes were continuously covered and the orthogonal product reached 1 samurai layer.
lL can be measured. - For 1ζ, the outer layers of the inner and orthogonal coarse layers are at their peripheries, these are the main thermal bonding areas, and f1 is
The entire circumference or tjti is thermally bonded. The arrangement of the areas to be glued (the M1 nails depend on the shape of the ring bag, and the hot wires can be determined according to the technique with respect to these areas). J All polyethylene films are generally w +1
! Since it is known that the L-axis is stretched and t, the Nfr of ``1-uniaxial stretching'' is a tree 111] Hosokawa and 11 points, and the polyethylene in the claims is 1-41 When it is used, it is used by the inflation method, and at least 2.51 notes appear, and r (f quickly). Cold-stretched polyethylene is also boiled. Film stretching and orthogonal AJ''tM can be performed by well-known methods. A typical uniaxially stretched orthogonally laminated layer is
A film of f-form high density polyethylene or low density polyethylene is made in an extruder and 4 in the direction of the machine to produce a film with very high MD tensile strength and TD tear strength. It can be made by cold stretching at a ratio of 1. There, the white material is opened into long sheets in a substantially spiral manner, in which case the film is stretched using a new base paper N11)4. The angle ut is typically 45° towards the end. Two sheets t of this long sheet, there appropriate -J
- Extended 11' iF6 density 1JI' polyethylene or low density polyethylene>1. Extrusion 4j with W layer,
CIM? can be done. Eikokushin orthogonal film can be made from low-degree or 100-degree thick polyethylene blankets, or mixtures thereof, and can be used in a variety of degrees. of the present invention: JS, 6i! One 'Ib different mixture that sinks into i is 9:1 11f1's one-dimensional low-density foothills and Uma'j
It is made of polyethylene. In such mixtures, high gr, 1. The increase in the thickness of the polyethylene film increases the resistance and tensile strength of the film. It is not necessary that all layers of the bag be made from the same material as those described above to be useful in the practice of this invention. Yes, Kaiten 11
Because of the ability to introduce materials that are Therefore, bags according to the invention may also have one or more layers formed of other thermoplastic 1+DJ resin packaging materials without detracting from the principles of the invention. As stated in the claims, 1i1 of the present invention
The x-circle is such that only one part of the manufactured bag embodies the essential crease feature, and other parts of the bag are heat welded or glued, such as #7. 1 made of thermoplastic 1+l l1it as joined by other methods
・It is understood that it includes 9 cases. The arrangement of the other parts and the position 1f'f, which are joined in a manner of 1(lN), can be easily chosen by a skilled person. However, in some instances there are more than m = 1 unstretched films forming the inner 11111 layers of the bag - i.e., cross-laminated at the front and back of the bag and between the outer surfaces. This is an advantage.This -1 column is
Canada I filed on October 6th and is currently applying! 1 #Ma'f
Out Jj) I q' 4313 , 484 +-L K
ffi As shown in the article, it has the shape of a mesh that allows nitrogen from the powdered product to pass through, and is made of -dimensional low-density polyethylene.
+ 111, the most simple fruit) Ji! i It's a bag of 4 bags. In the other 1911, the orthogonal first
It is preferable to add 1 L'-additional layer to the 111 layer. One such layer is the innermost (ft.
In order to provide the same improvement as occurred in the ↑1S portion of ll, a low density polyethylene film made by the inflation method was inserted between the crimp surfaces of the stretched layers of Lj. The squared-off appearance of the final package resulting from this creasing improves the package's performance relative to pallet loading and machining. improve. An additional benefit obtained from such an outer layer is that the surface can be made suitably smaller by adding polymeric particles to the film during extrusion of the film. It is. This provides the bag with additional improved handling performance. Similarly, the inner surface of this outer layer can be printed and printed between the layers to save it from abrasion and sloshing during handling of the light-filled packaging. Messages can be fixed. Laminated or multi-layer extruded films can be made into bags!
It is easy to see that the usefulness of this outer layer can be expanded by using it to impart oil-impermeable properties or oil- and biological-resistant properties. This is something to understand. Therefore, the practicality of the present invention is that the top Open or top valve (
Valve) Both types of chargeable, +(% 1lll or dangerous) durable shipping bags suitable for packaging of charges) lu thermal adhesive bag making machine that always comes in 10 Use? The reason lies in the fact that 1ffl can be manufactured. It has been found that adhesives made according to the technique of the present invention have the strength required for durable shipping bags. Accordingly, in still another feature, the present invention has an anterior direction and a posterior direction, and each of the O11 pillow iJ surface and the posterior direction are both 4
A top part characterized in that it consists of at least two layers of uniaxially oriented polyethylene held together, an inner surface formed of low density polyethylene thermally bonded thereto, and 1 to 11 orthogonally oriented outer layers consisting of 9 layers. Open 1'' type heat uJ'a
To provide a transport bag made of l'J resin. A top-opening transport bag made of wood 15 light is made by -axis stretching orthogonal J (the base paper of the layer film is made of
Among M+JE polyethylene, 11111 Jyt paper is sent together to make a bag with the side edges welded and heat glued, or the back side is hot foil spliced and the bottom is pasted. 2 It can be made with a making device. +! One useful type of plastic bag is a valve (also known as a J-bag).One example of this is our US Pat. ，
It is described in No. 166. These bags have a valve 411 structure that is self-sealing after filling and has the important commercial advantage of being easily filled through this valve structure. Therefore, another feature of the present invention is that the present invention has a front end and a back end that join together the entire 7tld edges of the bag and the filling opening circumference,
+jiJ +3iJ and each of the t4iJ kamako are in contact with each other] "An orthogonally laminated outer surface consisting of at least two uniaxially stretched polyethylenes of 1 and one inner surface formed of low-density polyethylene thermally bonded thereto. The present invention provides a bulb-sealed bag made of thermoplastic resin, which is characterized by a layered structure.Furthermore, another feature of the present invention is that 1111... 1 and a mold with a rear surface 11" - 1 bag with a valve made of plastic pouring and oil is provided, and the 1111 song is the 1st one.
Consists of a plane and a second plane, the combined width of which is 11i
Bigger than the 11th love of the 1st song, 11i, I j ni d
51 plane is at least l'jl1 minutes above the above 2+;
^ parallel to the lines and spaced apart from each other and joined together, so that it has an inner surface and an outer surface m', and the above-mentioned part of the bag is
forming a tubular self-sealing filling sleeve (5 leaves) extending across the bag;
The second plane also extends into at least one line extending from the previously mentioned line to substantially the opposite end of the bag, and the second plane is located within the filling sleeve. At least the inner end of the side surface is made up of at least two layers that are smaller than the total number of layers in the above and B22 flats, but do not extend identically to each other so as to form multiple layers, and each of said front surface and said rear surface comprises at least two sheets of one NG+ oriented polyethylene bonded together and an inner surface formed of low density polyethylene heat bonded thereto. There is. In another aspect, the present invention provides a thermoplastic material for use in durable shipping bags, the bag materials comprising at least one piece of oriented polyethylene bonded together. It consists of a laminate of two sheets and one sheet of low density polyethylene at least 0.5 nil thick adhered thereto. Preferably, the sheet of low density polyethylene is at least 0.0381 in (1,5 ntil) thick, the axially laminated polyethylene is low density polyethylene, more preferably one dimensional low density polyethylene, even more preferably is ^density polyethylene. Some embodiments of the present invention will be described in detail below, with nine examples depending on the direction of sealing. Figures 1 and 2 show 0.0762 mm (3 mil) made by the inflation method manufactured from one-dimensional low-density polyethylene resin (trade name R2045J) (Dow Chemical Company).
) thick one-dimensional low-density polyethylene 4t14 FIN, and the trade name “'Valeron” (VALE)
RON) and ittei (j)
11-layer orthogonal lamination - 0.0-dimensional low-density polyethylene
A generally rectangular parallelepiped two-layer pillow-shaped bag 1 is illustrated with an outer layer 889 mm (3.5 mil) thick. The bag 1 has a two-layer rear surface 4 and a two-layer 6tJ surface 5 created by planes 6 and 7, where the first and second parts overlap. The outer layer 6 of the rear surface 4 is continuous with the outer surface 3 of the front surface 5, except where it is joined together by thermal adhesive with the layer 2 at separate and overlapping planes 6 and 7. So surfaces 4 and 5 form a tube of Nt, 14, 21%. The bottom (one end of the tube) 8 wires are heat bonded to form a simple top-opening bag. 25. The bag is made by feeding the 96.98 on (571 nch) film cardboard that will become the outer layer 3 together with the film cardboard that will become the inner layer 1 and 2 into a frame that is folded in the longitudinal direction.
It is made by 45.72 rw (181 nch) km of double layered tubing with 4 mm (1 inch) overlap. The four layers of the overlapping area are then thermally bonded longitudinally to strengthen the tubes of the two layers, and the 21 rows of tubes are then passed through a transverse thermal bonding device to perform the bonding of the bottom part 8. To form the top-opening bag 1, a length of 66.04 tT with thermal adhesive is cut using a cutting machine.
Cut a ++ (26 inch) tube from the base paper. To test the strength of thermal bonding, bag 1 was heated to 22.68Kf.
(50 lb) of granular salt, the top edge of which was hot glued with a Dough boy J brand name hot gluer, and 3.048 t + 10 ft.
Drop tests were performed on both sides, edges, and butts. There was no breakage of any film or joints. The top curve of the bag is generally The product is then heat-bonded.It is extremely difficult to extract all the air from the package that has been exposed to light during the thermal gluing process.
! 0.6 on both sides of the bag to facilitate the release of air. r5mm ([
J, 0251ncb) I j1; I: It is preferable to make a hole in the l hole, the required needle hole 49 is r+v in the bag.
The air that is removed and the mold of the product that is being packaged is left behind. The westernmost part 119 of the two layers is air and moisture proof.
Q, when it is difficult to maintain the internal and external
The hole in between allows 1 fill of air and product mixture to flow out while the air is being let out. ”'6, typically 5.81.7〃(1ro 11
1-Ch) position u'( is shifted. Even if 11 in the bag
Although 111 Iff 2 is described as a single layer of elongated sheet, guests can readily appreciate that a 0.0381 un (1.5 mil) double layer tube may also be used instead. . In fact, the inflation method can be the preferred choice since it is less expensive to make the tube. Although the history also describes the outer surface line-dimensional low density polyethylene cross-laminated film (1m film), high-density polyethylene cross-laminated film can be used if special heat resistance is required for the bag. This is a convenient example to apply. Figures AA and 4 are roughly rectangular with Maekoku 11 and Shun 1 ■ IJ 12 joined together in the soft circumference to all Ji!iil of the bag. A three-layer pillow-shaped bag 10 is illustrated.
762F! The inner layer 13 and the outer layer 1 are made of one-dimensional low-density polyethylene with a thickness of 5 mtl. ν14 and 0
．． 889tnH (filtration, 5ml) thick -11 stretched straight film 4
(trade name of e-layer-dimensional low-lid polyethylene r2045J
(The Dow Chemical Company) and an intermediate layer 15 made of the same material (Dow Chemical Company). Mausoleum 12 is the same horizontal remains. The partially overlapping planes 1 are glued together longitudinally to form a three-layer tube whose front face 11 is open only to form a self-closing filling sleeve 1B.
Hit 6 and 17. The tube is included in our U.S. Hour Hand Specification No. 4. It is heat-sealed at both ends 19 to form a fully valved bag of the type illustrated in No. 3,833,166. In the practical example shown, the bag has a length 21 rolled up through thirteen layers of film and a heat-bonded layer 20 at the end 20. Total %, = I) J In the attached area, 11. of -axial stretching.
8 (The layer film is never glued to itself, but always between the mating surfaces, even in the 5ft section of the 13th layer, the double layer of unstretched film is Of course, it is preferable to have many adhesive areas rolled up to give the filled bag a cubic shape. It is recognized that it can be substituted for the sheet in 14. Besides the advantage that the bag can be gusseted, the outer layer can also be used to protect the printing from abrasion during transport. It can be printed on the back to confine the print between 14 and 15. In addition, a small amount of 40 mesh (0,5%)
Sh) high polymer falcon high density polyethylene resin, coarse tassel 11 to give excellent handling performance to the filled bag.
1-14 during extrusion to make a. Figure 5 shows the heat of polyethylene in the bag containing the product.
Figure 1 illustrates a bonding process in which the adhesive is under tension due to the product acting with a tendency to separate the layers. FIG. 5 shows a thermally bonded polyethylene body 5 made by welding parts of two stretched high-density polyethylene films 51 and two unstretched, low-density expanded polyethylene films 52.
0 is illustrated. The laminated seal 54 is attached to the thermally bonded body 5 at the thermally bonded edge.
41'j component of 0, two adjacent layers 51 and 5
2. A relatively small extruded laminate seal 55 is between the two layers 55. The sealing of the TRT layer, which constitutes the first component of the thermal bonding layer, can be achieved by applying a thermal bonding frame device to the film, in which case the M product is simultaneously heated. Acts as an adhesive. Separately, laminated seals can be produced by a multi-process operation, in which case the laminated seal is produced at a temperature lower than the melting temperature of the cross-layered polyethylene (to prevent stretching failure); Typically 115°C (240°C
By bonding the layers with 6F'), a typical K Id
A 2.54 cm (11 ncb) width is first applied to the laminate. A side weld thermal bond is then created across the laminate by applying temperature and pressure. A laminated product 110 of high grade B polyethylene sheets 111 and 112 is illustrated, each having a grade of 0.03
They are extrusion laminated together to a thickness of 81 mm (1.5 nil), the directions of stretching of the two sheets being at right angles to each other. Laminated and sealed into the laminate 110 by extrusion lamination is a one-dimensional low-density round polyethylene sheet 115 having a thickness of 0.0635 m (0.25+nil). It is preferred that the low-density polyethylene in contact with the orthogonal orthogonal layers have as low a melting temperature as possible and be as fluid as possible when melted. This is usually achieved by using low density polyethylene polymers, such that the inner layer at the end of the two-layer spar is thin (typically 0.0
635 (0.25ml) thick) multilayer 1fi with only one layer
In extrusion, it is desirable that the crystalline melt film on top of the layer be in direct contact with the cross-laminated film. The thickness of the inner layer of low-density polyethylene required to create an acceptable thermal bond layer is highly dependent on the elasticity of the cross-laminated film used, i.e., the less elastic the cross-laminated film is, the less elastic the cross-laminated film is. This taught us that low-density pre-existing polyethylene films must be thicker. The overall relative thickness of the polyethylene layers can be easily determined by the skilled person.

[Brief explanation of the drawing]

Fig. 1 is a front elevational view of the top-opening bag according to the present invention, Fig. 2 is a horizontal 11i view taken along section au-u of Fig. ε1↓1, and Fig. 6 is a view of the thin valve bag according to the present invention. Front elevational view, Figure 144 U Figure 3 (7) Cutting line N -1V KfH15
Horizontal ffJr rm t, rJ. The use of FIG. 5 is limited as described above in carrying out the present invention.
FIG. 6 is a 4-yellow cross-sectional view of a preferred A7 layer product of thermoplastic resin Hamura according to the present invention. 1: Transport bag, 2: Inner layer, 6: Outer 11”,!I
IBM 14: Back 1 [u, 5: rviJ m +
6'd'r'Hei1n'. 7: Second enclosure, 8: Bottom, 1O: Valve A; Jλ; Lee
Rupa2゜11: rji! no, 12: rear surface,
13: Inside 1.・I. 14: Outer four layers, 15: Median curvature V, 16: +14
1 Hijima, 17: 2nd Hijima, 18: Valve-shaped self-closing light 1
Straight sleeve. Procedural amendment (method) % formula %”, Case indication 1982 Patent application No. 249820 2, Name of invention Transportation bag 3, Person making the amendment Relationship to the case Patent applicant address Kanata, Ontario, North York, Shepherd Avenue East, 90 Name CI L Incorporated 4, Agent Address 105 Address Bussan Building Annex, 1-15 Nishi-Shimbashi, Minato-ku, Tokyo Telephone (591) 0261 Attachment There is no change in the details of the statement, I).

Claims (1)

Claims: 1. Comprised of orthogonal laminates comprising at least two sheets of uniaxially oriented polyethylene having front and rear surfaces, each surface bonded together, the layers of the laminate forming a thermally bonded area. Inserting two layers of low-strength polyethylene between the layers of the laminate in the heat-attached area in a thermoplastic shipping bag, one of which is heat-bonded to the other. Features: jiga shipping bag. 2. Each of said layers of low density polyethylene covers one of the bags.
llll M is made up of 41. Each of the layers has at least (J, 0127g
m (0,5tnil) thick (Mr'a'i ljl:
The pail transport bag according to claim 1, characterized in that the sheet is made of a polyethylene sheet and constitutes one of the layers of low-density polyethylene. 4. Tjil Note 11 The material according to any one of claims 1 to 3, characterized in that it consists of at least two sheets of uniaxially oriented madder density polyethylene bonded together with the layers of the cross-laminate. transport bag. 5. A patent product characterized in that the orthogonally laminated layers are both made of at least two sheets of uniaxially stretched low-density polyethylene. Scope of request Nine items for transportation as described in any one of Items 1 to 21, Item 3, 6, 1jl Direct Father 4
``1 layer of JMH, at least two sheets of uniaxially oriented one-dimensional low-density polyethylene bonded together at 7. Transport bag as described in section. 7. In the case of the plastic inner IIL top glue i+li 4 sheets formed by thermally bonding the Ti11 surface and the rear surface, each of said surfaces is bonded together with the JI11. l at least two sheets of oriented polyethylene and a low V thermally bonded thereto;
M [A disposable bag characterized by an inner surface made of polyethylene and an outer 11 m layer of orthogonal lamination. 8. The 111 transporting bag described in Item 7 of the Il Busy Condolence Request for Item 11, characterized in that the inner 11I1 surface of the MiJ is made of one-dimensional low-e IJt polyethylene. . 9 141J if monthly negative S/: 1 outside the coarse layer! ! II
Each of the 1" and 4" clocks are made of at least two sheets of densely skinned polyethylene. Between the yth y, ri or inside, one side of the suno C as described in item 8.
1IlI 9ij; (l 1.+('1151jlH
The 11th characteristic is that it consists of at least two (k) sheets of polyethylene.
J171'Buko&:t Condolence 8 Ding J'l nQ small (of
11iq i III! '4. 11. Each of the outer layers of the fiil-extended one-dimensional low-density V (consisting of at least two layers of polyethylene) 7) I'4 or 7λ is B, rI] I11
Nino 4 Moetsu Tsuki J bag. 12, +iil 1111 and a stepped surface with a top-opening hot spout. i! In the bag, each of the above-mentioned previous songs and 1IiJ notes 1111 has at least two sheets of stretched polyethylene glued to it, and a sheet of Yi close-ribbed polyethylene that is hot-bonded to it. ”
4. A pickling bag characterized by comprising an inner surface formed of a polyurethane, and an outer layer consisting of an orthogonal outer layer. 16. Patented box gF characterized in that the inner surface of the front h12 is made of one-dimensional low 7G glued polyethylene:
, Transport bag listed in 12 Rivers. 14. The orthogonal A'y layer, each outer layer comprising at least two sheets of uniaxially oriented high density polyethylene bonded together.
The transportation bag described in Item 2 and Item 16. 15, each of the orthogonal outer layers of Ail is -4・I1
Claim 12: A watch comprising at least two sheets of one-dimensional low-density polyethylene.
The transportation bag described in Section 8 or Section 8Bi Section 3. 11 A bag-shaped thermoplastic resin 'l'i with a valve and a front curve and a rear direction, in which the entire periphery of the bag and the filling opening are joined together.
For use in A-no-kawabukuro, each of the above-mentioned front song and the back side of niJki are:
At least two sheets of uniaxially oriented polyethylene bonded together and a low density polyethylene thermally bonded thereto, the outer layer comprising an orthogonal O'Jt formed of at least two sheets of uniaxially oriented polyethylene and an outer layer formed therein. A bag for transportation. 1B, Nip, Disciple 17 of patent claim, characterized in that the inner surface is formed of one-dimensional low-density polyethylene.
19. Each of the straight or ridge outer layers (1111) is characterized by being made of at least two sheets of high-density polyethylene, which are glued together and are glued together. The transportation bag described in Patent jji4 Iori 17] J! or Small Item 18. 20, iii Each of the orthogonally laminated outer layers described in J is -11
111;
j: 'li + η shipping bag written on page 18. 21, each of the orthogonal outer layers is
The transport bag according to item 18, characterized in that it is made of a stretched-dimensional low-density polyethylene sheet. 226 It has a front surface and a ridged surface that are joined together to the circumference of the entire periphery of the bag, the front surface is made up of a first plane and a second plane whose combined width A1 is larger than the width of the rear part, and the i 1
The plane has a distance of at least 11μ from the second plane along the entire length of the bag.
partially overlapping, and the N1 planes are substantially parallel to one end of the bag in their common area;
and the bag is joined together at a line a short distance from the end, and has an inner and an outer surface, facing the one end of the bag. :4,':li cut to form an extending valve-shaped self-sealing filling sleeve, 01I first flat t+
U forms the outer surface of the filling sleeve, the second part forms the inner surface of the filling sleeve, and the filling sleeve 1f defines the substantially opposite end of the bag. joined together along the kasuri extending from the previously mentioned line, 1I
The second plane is at least one of the inner surfaces of the filling sleeve. ll1i'ii+i is formed of a number of layers less than the total number of layers in the second plane of riII, so that at least two Jt. The valve bag type 4-ill is attached to the 11-16 bag on the shoulder, and each of the front and rear sections is attached with foil to extend the axis. 1. A shipping bag comprising at least two sheets of polyethylene, an inner surface formed of low density polyethylene thermally bonded thereto, and an orthogonal outer layer consisting of one layer. . 25. The transport bag according to claim 22, wherein the inner layer is made of one-dimensional low-density polyethylene. 24. Each of the orthogonally laminated outer layers are grafted together.
25, Mil 11. The outer layer of the orthogonal layer is composed of at least two sheets of uniaxially oriented low-density black polyethylene.
Claim 22JJ1-1. or skin 2
Transport bag described in item 5. 26. The valley of the outer layer of the orthogonal layer, written by Kazusuke Tsutomu.
1422 or 23'' single-layer bag with a yoke width of 1422 or 23'', characterized in that it is made of at least two sheets of low-density polyethylene. 27. In a durable medium-sized mailing bag, the (j
material d1, a laminate of at least two sheets of uniaxially oriented polyethylene glued together and one sheet of low-density polyethylene of at least t), 0.127 vIyt (0.5 mil ) thick, and more A thermoplastic 1 raw resin material suitable for use in durable transportation A. 2?3 The low-density polyethylene is -dimensional low-density polyethylene. []1
The thermal 0.1 plasticity tree described in box 27)]) 1 material. 29, 1fiJ low W? JJ) l Polyethylene has a thickness of at least U, 0381 yna (1,5+ni
8 pH soluble resin material t1゜30, AiJ, described in item 27 of the 71st edition NT3 request, characterized in that it is
Claim 27, characterized in that the axially oriented polyethylene V is high-density polyethylene.
Intoxication 11i7 material. 61. The axially oriented polyethylene is low density polyethylene.
Drunkenness as described in any one of Sections 21529...1'!
, M Fi 2-axially oriented polyethylene is one-dimensional low density polyethylene.
The thermoplastic resin product according to any one of Items 27 to 29 of Box 114.