JPH01501217A - protective packaging - 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] protective packaging The present invention relates to the protection of articles by packaging materials.

It is within the purpose of this invention to protect various types of articles, including wood, against weather and boarding. There is something to protect.

Other objects of the invention include providing new packaging materials that provide the desired protection. Ru.

The above and other objects of the invention will be understood from the example 2.3 below. Dew. Referring to the accompanying drawings, FIG. A front view of a protected orange tree.

FIG. 2 is a cross-sectional view of FIG. 1 taken along line 2--2.

FIG. 3 is a front view of a grape fruit tree protected in accordance with the present invention.

FIG. 4 is a partial cross-sectional view of a coil of sheet material protected in accordance with the present invention; FIG.

FIG. 5 is a detailed view of the protective packaging material of FIG. 4;

FIG. 6 is a horizontal cross-sectional view of a packaged glass automobile window.

FIG. 7 is a perspective view showing a packaging envelope for holding an electric response body according to the present invention; It is a diagram showing a part of the envelope cut away to show the bridge construction.

FIG. 8 is a similar view showing a modified packaging envelope of the present invention.

The citrus fruit industry in certain geographic locations is subject to occasional threats of sub-freezing weather. be. Freezing weather not only damages unharvested fruit but also damages the citrus tree itself. A tree that is damaged and needs replacement, especially when the tree is young, is a total loss. This results in an expensive expense. On the other hand, damage caused by freezing temperatures to the fruit itself is relatively harmless. I can see it.

According to one aspect of the invention, the stem has a thickness of at least about 17 millimeters. Citrus trees are wrapped in flexible plastic foam sheets. The trunk is protected, and the thickness of the sheet is greater than about 2 cm and about 3 cm. not more than a centimeter, and the number of turns of the packaging material is from about 6 to about 12; The flexibility of the foam is determined by the fact that the foam sheet extends from the stem surface to the outer surface of the inner edge of the sheet. The packaging material is compressed to substantially fill the space at the end of the first roll that extends such that the gate does not allow the passage of significant radiant energy.

The packaging material foam is preferably laminated to a backing layer or one side remains unformed or remains unformed against mechanical wear and other forces. It is fused to form a continuous envelope that supports and strengthens the ohm.

A particularly effective backing layer is polyethylene terephthalate having a thickness of about 172 to about 1 mil. This is the first film. This is laminated amorphous polypropylene, or 198 Disclosed in PCT Application No. US86101731 filed August 20, 2006 It can be laminated to a foam sheet for use as any other laminating material. other way In this case, the foam can be formed against the backing layer and the foam-forming mixture adhere to the backing layer for normal adhesion.

Polyethylene terephthalate backing film has a metallized layer on one side or side of the film. is applied on both sides to reduce the transmission of radiant energy to the trunk of the wrapped tree. It is used very effectively to block the interference. Such a metallized layer absorbs radiant energy. - should have a reflectance of at least about 273, especially if the metallized layer If on only one side of the backing film, a reflectance of at least about 75% is preferred. Or have. Aluminum is the metal of choice for such metallization. .

Use at least about 6 rolls of foam laminate to form the trunk of an orange tree. By packaging, the effect of the metallized layer on blocking radiant energy is Even if the impact energy was increased, about 1/3 of the collision energy was successfully penetrated into the outer layer. However, such energy does not substantially penetrate all six layers.

The foam layer can also be colored to block the passage of radiant energy. .

Contains about 0.5% to 1% of carbon black, dark dye f1 or other pigments alone, whether or not the foam is laminated to a backing sheet; Such coloration, whether or not the backing sheet is metallized, such as The foam blocks nearly all energy penetration through the six-layer package. That's enough.

The foam layer is elastic enough to crush all the spaces on the surface of the tree trunk. Figures 1 and 2 show typical citrus tree packaging. The trunk of the tree is made of plastic, metal or plastic-coated metal. 6 to 15 rolls of plastic film held in place by wrapping 4 It is wrapped in an ohm sheet 12. The innermost winding part 18 of the foam sheet is It has a leading end 20 that must be wrapped around the package, with a gap 22 usually The next turn is formed as it extends from the surface of the wood to the outer surface of the tip 20. but However, the foam sheet 12 has an open cell (continuous cell) flexible structure. and have a density not greater than about 20% of the density of unfoamed plastic. It is made with high flexibility (flexibility). In these conditions, the foam is in place. Wrapping and tying the foam is sufficient to force the foam into the space 22; This may cause a negligible amount of cold air around the tree to enter the wrapped trunk. Make no space left.

Visibility packaging material also seals against uneven surfaces of the wrapped trunk, allowing the trunk to grow as the tree grows. This makes it possible for the virus to spread easily.

The plastic used to make the foam sheet 12 does not provide the desired flexibility. Polyurethane plastic can be of any kind, polypropylene , as well as polyethylene and polystyrene plastics, are extremely effective l Also inexpensive, flexible plastics are highly resistant to the effects of mechanical wear or weather deterioration. This is why antioxidants and other weather-resistant ingredients are added. In addition, polyethylene terephthalate, polyacrylate, polypropylene film or or by a strong weather-resistant backing sheet such as tensioned polyethylene film. best protected.

Wrap 3 to 4 feet of tree trunk height (approximately 90 CIN to approximately 120 ct) It is preferable to do so.

FIG. 3 shows another embodiment of the invention, in which glazed trees 40 are protected with wrapping material 50. It is. The glaze begins to bud in the warm winter sun, - a roll of protective packaging material 50 or A one-and-a-half wrap will provide significant protection if it blocks enough sunlight.

fixed to a reflective barrier film such as metallized polyethylene terephthalate. Visibility foam from 1/8 to 174 inches (approximately 0.3 to 0.61) thick Packaging materials that are laminates have metallization on the outside or inside surface of the film or Either one is good. For decimal packaging volumes, form is not filled with light blocking ingredients such as dyes, carbon black or other pigments. If not, it is preferred that the reflectance of the metallized layer is at least about 80%.

The thickness of the backing layer only needs to be sufficient to provide the desired strength and abrasion resistance. A polyethylene terephthalate film with a thickness of about 172 mils is suitable. However, the film may be up to about 1 mil thick. tensioned polyethylene Other backing sheets such as Plastics such as less strong polystyrene may have a strength of about 1.5 It should be 3 mils thick.

The thickness of the foam layer of the packaging material 50 is such that it is dense against the unevenness of the surface of the tree trunk of Gray 1. This must be sufficient to seal, often 1/8 inch (approximately 0.3 cm) ) is an appropriate thickness, but a thickness of 1/4 inch (approximately 0.6 cm) is also suitable in many cases. generally appropriate. The flexibility of this form is greater than that of the form in Figure 1. There is no requirement that the packaging material f450 has a foam with a closed cell or open cell structure. can do. The foam may be made of any of the plastics mentioned in connection with FIG. Made.

Additionally, the backing sheet for the packaging material 50 may be as described in connection with FIG. It can also be replaced with an unfoamed plastic jacket on the outside surface of the foam.

FIG. 4 shows yet another embodiment of the present invention, in which a coil of sheet-like tin plate is shown. 60 is packaged, for example, within a protective laminate 70, with the laminate covering both sides. Covered and folded at the top and bottom ends of the sheet-like tin plate. cardboard de Disks 72 are attached to the upper and lower folds to provide cushioning. La One roll of laminated packaging material 70 is sufficient, but additional rolls or one and a half rolls may be used. can be The free outer end of the packaging material is tied or affixed in place.

The construction of packaging material 70 is shown in more detail in FIG. The packaging material is tensioned. layer 8 of ohms) laminated to a layer of paper 82 laminated to a layer of polyethylene 83.84 Consists of 1. The foam layer preferably has a closed cell structure and has a thickness of about 1/32 to 1/8 inch (approximately 0.08 cm to 0.3 cm) thick, preferably It has a thickness of 1716 inches (approximately 0.16 CIl) and has a thickness of 500 bond (approximately 225 against the relatively strong stresses associated with handling metal coils weighing more than It can withstand and act as a cushion. The form is the one shown in Figures 1 and 3. The ohm does not have to be elastic, but it must not be hard, unexploited. Polypropylene having a density of about 173 to 115 of that of foam polypropylene closed-cell foam is extremely satisfactory, but many other foamed plastics The same blocks are used as shown in connection with FIGS. 1 and 3.

The paper sheets may be free from arbitrary or other labels as described in PCT Application U'58610173]. 25 to 35 bond (approximately 1 1 kg to 16 kg) of kraft paper, preferably 30 bond (approximately 13 packs) It is soft paper.

Polyethylene sheets 83 and 84 are tensioned at right angles to each other, but It has good resistance to crushing. The sheets are stacked on paper layers and each other. preferably has a pressure sensitive laminate and is about 2 to about 3 mils, preferably 2. It has an overall thickness of 5 mils. Both of these polyethylene sheets are almost identical It is preferable to have a thickness of plus or minus about 20%).

Paper layer 82 can be omitted from packaging material 70, but its presence separates all layers from each other. This makes it easy to stack layers.

The structure shown in Figure 4 is made of aluminum, black plate, and brenin (plain) steel. Requires metal, copper, brass and stainless steel or cushion packaging It is particularly useful for protecting other metals such as other sheet metals. wrapped gold If the material is corrosive, the surface of the foam layer 81 may be Volatile Corrosion Inhibitors (“VCIs”) as described in No. 1 and the aforementioned PCT applications. Can be coated.

The metal being packaged is bricut (pre-cut) stacked for shipping in the East. It may be in sheet or die-cut form.

Edges of packaging material that are folded over the top and bottom edges of the package to make packaging easier The portion has a surface that resembles that of U.S. Pat. No. 4,086,384 or the aforementioned PCT application. Cohesive - May be pre-coated with an adhesive such as a non-stick adhesive or a contact adhesive. and the folded parts are sealed together. Cardboard protective disc or any other The protective disc has folded sections that seal together to hold the protective disc in place. can be pre-coated or placed below the fold of the packaging material. Wear.

For objects as heavy as glass plates, an aperture step with a thickness of about 1 to about 4 mm is used. Packaging material of about 1 to about 3 millimeters of cushioned foam laminated to the ball be effectively protected by fees.

Preferably, the glass plate is sandwiched between the foam sides of two sheets of laminate; Two laminate sheets are brought into contact with a glass plate in between.

FIG. 6 shows a car support sandwiched between two sheets of packaging material 120 and 130. The side window 11o is shown.

Each sheet consists of a layer 141 of cushioning foam laminated to a layer 142 of open cardboard. Consists of.

The foam layer is preferably a free-standing foam layer as described in U.S. Pat. No. 4,086,384. Foam microform. Polypropylene is extremely resistant to microforms. Although effective plastics, polyethylene, polyvinyl chloride, and cushioning Listyrene and cushioning polyurethanes are also highly suitable.

The open corrugated board consists of two paper webs 151 and 152.

The web 151 is approximately 2 mm thick from paper weighing approximately 99 bonds (approximately 44 kg) per ream. Waves can be added to the depth of the water. E with about 4 waves per centimeter type of waves are extremely effective, but at least 21/2 and and at most 6 waves can also be used.

The face web 152 of layer 142 is made of paper weighing approximately 126 bonds (approximately 57 kg) per ream. Each of the six paper webs independently contains from about 70 bonds to about 330 bonds per run. (approximately 31 kg to approximately 148 kg) and the waves may be of type A, B or or any other type such as C.

Open corrugated cardboard of the aforementioned type is described in U.S. Pat. No. 3,288,353. Ru.

A feature of the present invention is that open corrugated cardboard has been well developed and is relatively inexpensive and readily available. This is a product, and unlike double-sided cardboard, the in-line parallel to the waves of the web 151 The point is that it is very flexible when bent along. The opening cardboard is therefore It can be wound into a roll having an inner diameter of about 6 cm/1 dollar. This kind of lo The tool is easily shipped and is compatible with U.S. Patent No. 4,601.157 and No. WO No. 35104150 issued on September 26, 1985, PCT Application No. US8 It is easy to feed corrugated cardboard to a continuous laminating machine as shown in No. 5100399. Contains 30 meters or more of cardboard in the form used for Can be done.

Web 151 and/or web 152 may have impermeability or other properties desired. may be made from materials other than paper, such as plastic film, if Ru.

The foam layer 141 is made of high temperature melt thermoplastic rubber adhesive, polymeric rubber, etc. Uryllactone adhesive, amorphous polypropylene or number WO371 PCT Application No. tJs861 published on February 26, 1987 under No. 01092 01731, or natural rubber or S Latex-type adhesives, such as BS rubber, have adhesive laminates such as The corrugated web 151 is easily laminated. The laminand is the outermost part of the corrugated web 151. It only needs to be coated on the top of the part, so the cost of laminated attachment is extremely low. .

Laminands with relatively weak bonding strength, such as amorphous polypropylene, have a corrugated peak. enough to flatten the top so that the section is about 2 to 3 millimeters wide. can be applied to the corrugated crest while the corrugated crest is pressed against the facing web. Preferably, this provides a larger engagement surface for the laminand, but a weaker Bonding adhesives should not be used to package objects heavier than about 1 kg.

Some laminates, such as the thermoplastic rubber type, are used when lamination is complete and the laminated Minando is adversely affected by heat applied after it has cooled down.

The final laminates 120 and 130 are easily rolled as open cardboard alone. Ru. These laminates are manufactured by Sand Switch packaging machines are easily fed from such rolls. Therefore, La The laminate is cooled or heat sealed around a series of individual car glass windows. can be done.

For cooling seals, the outer surface of form 41 1iP CT application US8610 1731 with a cohesive-non-adhesive layer 160.

Cohesive-non-adhesive coatings are applied in high-speed equipment up to temperatures around 100°C The negative effect on the laminand is that the foam is dried by heating. Cohesive-non-adhesive coating is applied to the foam before being laminated to the corrugated top This can be avoided by

In some cases, one side supports a cohesive-nonadhesive coating and the other side supports a cohesive-nonadhesive coating. It is desirable to apply a foam layer on top that supports a flexible support web. 30bo The resin film of kraft paper (approximately 13 kg) has a thickness of approximately 50 microns. If so, it is a suitable web. The supporting web surface may be any of the adhesives mentioned above. Laminated on top. The resulting lamination of open cardboard against a previously prepared form Nandos are fully flexible when wound around an axis parallel to the corrugation, and if If the foam layer faces inward toward the winding axis, a core of around 8 cm It can be wrapped around a. The thin foam support web then has a suitable degree Slightly bulges between the tops to allow flexing of the laminate.

The paper support web is about one-fourth the thickness of surface 152, or thinner, preferably about one-fourth the thickness of surface 152, or less. It must not be heavier than 35 bond (approximately 15 kg>).

The glass component of each automobile side door weighs approximately 5 to 10 kg. packaging material The material sheets 120 and 130 are arranged so that the wrapped members are stacked edge-down. The heaviest glass member or the heaviest For light packaging material sheets, stacking is corrugated 151 to provide greater support stiffness. are preferably arranged vertically.

Prevents the edges of the packaging material sheet from collapsing under the weight of the vertically oriented glass member. This type of crushing is not necessarily essential; Although it does not significantly increase the risk of damage, When handling the packaged parts, it is better to handle them slowly.

To reduce edge collapse, the sealing f & the corrugations of one web 151 fit together. The two packaging materials are sealed at right angles to the corresponding corrugations of the web. This combination, which may be fed from a direction perpendicular to the Even greater stiffness occurs when stacking of drawings is done on edges perpendicular to the stacking position of the drawings. Give a feeling.

Easily damaged objects other than glass plates are also protected according to the invention.

Lighter objects require lighter packaging materials, but plastic sheets, Plastic moldings and electronic circuit boards are likewise protected.

Paper webs 151 and 151 for packaging light objects with plastic webs can be used in place of paper, but is generally more expensive than paper for the same stiffness. Become. Metal webs such as aluminum can also be used as webs 151 and 152. Any one of paper webs 151 and 152 of the same thickness can be used. Only one part is metal, the other can be paper or plastic.

Packaging materials for packaging circuit boards or other objects that are sensitive to electric or magnetic fields. Material laminates are made of particles of carbon or other antistatic material that are microdivided into a form. It has a foam layer that is filled with foam and treated to prevent static electricity from building up. do. The packaging material laminate includes at least one metal or metallized web. Such webs on both sides of the packaged object provide good electrical contact. Connecting the sides to each other using just enough metal staples to achieve Thus, or a single large lamina and/or web 152 is made electrically conductive. Made of carbon filled paper. The foam surface conforms to PCT Publication W○871010 Cohesive-non-adhesive and/or anti-static agents as described in US Pat. Can be coated with a corrosion inhibitor that does not require corrosion.

The foam layer 141 is also laminated to the facing web 152 of the open corrugated board. be able to. This arrangement leaves the web 152 exposed and allows the stacking direction to be changed. easily seen.

The aforementioned laminate is used in the book or can industry with weights exceeding 1 kg and is shown in Figure 4. Especially for packaging similar coil or sheet metal stacks such as It is valid. This type of coil weighs a ton or more. outermost The edges of the metal wraps need to be especially cushioned.

Heavy objects such as car bumpers can be packaged with the laminate of the present invention. Therefore, they are effectively protected during shipping and handling, and are Items with sharp protrusions, such as gears, are also protected.

The laminates of the present invention can be used on automobiles or trucks stacked for storage or shipping. Suitable for use as a cushioning spacer by sandwiching it between the wheels of the rack. are doing. For this use, a non-stick coating can be omitted.

Bottles or other containers for transporting food etc. may also have their walls coated with the laminate of the present invention. You can also do that. For this purpose, cohesive-non-adhesive coatings are Can replace ordinary pressure sensitive adhesives such as those described in W○87101092 Ru.

In case of food contact, food grade materials should be used during lamination. be.

The laminate of the present invention is suitable for use on elevator surfaces when structural equipment or materials are transported. It is also used as a pad attached to the inside surface of an elevator to protect Particularly suitable. Even if the laminate is equipped with an eyelet for hanging it on a hook, It can also be coated with a pressure-sensitive adhesive to adhere directly to the surface to be protected. good. No adhesive is needed when the pad is used to protect floors.

Such pads are also suitable for the interior of truck bodies. In addition, the pad Makes an excellent winter cover for unattached air conditioners and can be shipped in cartons or wooden boxes. It also serves as a pad for loaded air conditioners and other large or heavy objects.

Still other applications for the laminates of the present invention include overhead pullers. By assisting in sealing the edges of garage doors such as pull-down doors. be. For this purpose, the laminate is placed so that the surface of the foam abuts the door frame. When the door is closed, the frame surface will overlap the door. abut the adjacent side edges of the The top and bottom edges of the door are supports separate pads to help seal against the room and floor.

The uncorrugated face web 152 is cut to further improve the protection of the laminate of the present invention. Such cross-sectional tension may be made from a surface-tensioned polyethylene sandwich The applied sandwich is made of foamed polyethylene as described in British Patent No. 989.521. In the "Valeron" literature published by Rencito or Pan Rare Plastics May be made from unfoamed polyethylene sheet as described, cut and crushed. unexpectedly resist. The sandwich is glued to the corrugated web 151 If the surface is corona treated or such treatment This is not necessary if a tensioning agent is used, and the tensioning sandwich is It does not need to be heated to a temperature that causes a reduction in the effect.

In some cases, the presence of antistatic properties on the surface of the foam will prevent sensitive objects in contact with the surface. Accelerates corrosion. This difficulty is due to the inclusion of volatile corrosion inhibitors within the coating. Therefore, and/or is minimized by inserting a safety sheet. The spacer sheet is Pressure-sensitive adhesive or adhesive to adhere in place on the foam side of the laminate. Cohesive-non-adhesive adhesives can be supported.

Polyethylene terephthalate film is strong, tough, and highly effective. It can be laminated to foam layers to form a package. This film is Desirable in that it is metallized on one or both sides to give a Radday cage effect. One side of the film is made of polymethyl methacrylate, which is about 10 to 20 microns thick. Preferably protected by a hard plastic coating such as Relate . Such coatings are antistatic or coated with an antistatic on top. or filled with metal needles to make them highly conductive to electricity. Good, about 2 to 10 microns thick and about 1 to 5 millimeters long. Kel filaments account for approximately 35% of the solid weight of the coating and approximately 50% It is effective when refining.

The form of any of the aforementioned laminates can be closed cell or open cell. Ru. Coating on open cell foam? , is made in the same way as closed cell foam. use

A feature of the invention is that metallized polyethylene terephthalate having a thickness not exceeding about 25 microns 1) Laminated on the backing sheet of the plate, the thickness of the sheet is approximately 7 mm. A packaging laminate having a layer of adhesive foam, with the backing sheet being an external metallized on both sides to insulate against electrical influences. (When an object slides across a surface, the amount of static electricity that can cause damage increases.) (with a sufficient amount of antistatic material to prevent damage).

laminate used to bond foam to polyethylene terephthalate especially when the laminate is heat sealed to itself or to other objects. Preferably it is a pressure sensitive adhesive.

As mentioned above, typical pressure sensitive adhesives are described in PCT Publication WO37101092. It is listed.

Figure 7 shows an electrically sensitive object 2]2, such as a circuit board, which is metallized on both sides. The cushioning foam laminated on the polyethylene terephthalate sheet 218 The package 210 is shown as being held in an envelope 214 made from a layer 216 of Ru. The metallization is preferably made nearly identical on both sides.Both sides are coated prior to metallization. Polyethylene terephthalate sheets are completely transparent even when the sheets are completely transparent. Just thick enough to be opaque.

The thickness of the sheet should not exceed about 25 microns, preferably about 15 to about 2 It is 5 microns. Two metallization layers, generally aluminum, are exposed to external electrical influences. Provides effective double shielding of package contents against

Cushioning foam layers are described in U.S. Pat. Nos. 4,086,384 and 4,263 , No. 380, the microcellular closed cell polypropylene foam described in Any other cushion of polyethylene, polystyrene, polyvinyl chloride, polyurethane A flexible foam may also be used. The thickness of the foam layer is preferably between about 1 and It is about 7 millimeters, and 3 millimeters or less is the computer floor. Sufficient for tightly packaging light objects such as discs or rigid types. be.

The outside surface of the foam, which is the surface that is not laminated to the polyethylene terephthalate sheet, is , to prevent a significant build-up of static charge when something slides over a surface. Preferably, a suitable antistatic material is supported. PCT Publication WO87101092 and is an antiseptic described in U.S. Pat. Nos. 4,321,297 and 4,584,225. Any of the electrical agents provides industry-acceptable short discharge times, typically about 0.4 seconds. It can be used as long as possible.

Envelope 214 preferably folds the sheet of laminate along line 220-220. 222, 222 of one fold to the corresponding side of the other fold. Glue to the edges. Such adhesion is described in PCT Publication WO37101092. by heating or cooling sealing, or by ultrasonic coupling as also described therein. This can be done depending on the situation. Alternative to ultrasonic vibrators and anvils Melting shoes and supports of sealing devices in PCT Publication WO37101092 The body is especially desirable.

Alternatively, the folds of the envelope shown in Figure 7 can be sealed with regular adhesive or staples. It can also be fixed by a file. from one fold to another The continuity of the metallization layer makes it possible for Faraday cages to provide electrical protection for packaged goods. Improve the effect.

Envelope 214 also extends to the free end of the fold to provide additional electrical protection. It has a lid flap yA4 for use. For best protection, apply heat or Ultrasonic heat sealing, cohesive - non-adhesive or pressure sensitive adhesive to underside of flap Described as side one end sealing including cooling sealing with agent coating The flaps may be sealed against the superimposed flaps in any of a variety of ways. can be

The package includes a wrapper sandwiched between the top and bottom of the packaged object 212, as described. This can also be done using separate sheets of laminate 214.

These separate laminate sheets are heat sealed around the packaged object. or cold-sealed or stapled.

The high specularity of the outer metallized surface of polyethylene terephthalate is preferably This can be suppressed by roughening the surface before attribution. Extremely fine sharp edges Soft sandblasting in sand is extremely effective and removes rough molds. molding polyethylene terephthalate onto the surface, or at least one It is also effective to press the sheet between rollers that have rough edges.

Roughening of such polyethylene terephthalate sheets is a matter of lamination. Removes fingerprints that are normally deposited when handling objects.

Package 260 of FIG. 8 is generally similar in shape and construction to envelope 214 of FIG. It has a similar envelope 262. Figure 7 shows polyethylene terephthalate backing. Instead of a sheet, envelope 262 has a steel foil backing sheet 264. This foil is Preferably a fairly pure material with very high magnetic permeability and very low remanence. It is carbon-free hardened iron. This type of 1/3 mil The thick foil provides good magnetic shielding for the contents of the envelope, such as the magnetic recording disk 266. Cover and give. Similar iron foils containing 1% to 3% silicon are also highly effective. be.

The metal 264 provides just enough solidity to harden the entire envelope and connect the flaps. Can be kept in place without adhesive. Envelope 262 therefore has its contents When shipping items and withdrawing them intermittently for use in computers, etc. Can be used for both storing their contents during storage.

The outer surface of the iron foil may be treated to inhibit corrosion. For example, it are made of aluminum, silver or other materials that provide a highly conductive jacket that protects against external electrical influences. or copper-coated or partially reduced, such as zinc dichromate. Simply coated with corrosion inhibitor. The foam layer protects the foil, especially its foam contact surface. Volatile corrosion inhibitors may also be supported.

Any metal with magnetic permeability and remanence similar to pure iron may be used within envelope 262. Provides effective magnetic shielding for the container.

For example, in the envelope 262, the upper folded portion 271 is lower than the lower folded portion 272. Be wide and otherwise shaped so that it protrudes beyond the edges on each side of the lower fold. It can also be done. These protruding parts are placed around the edges of the lower fold. It is bent and engages the lower surface of the lower fold 272 . these outstanding If the folds are stiff enough, they will touch the lower surface of the fold 272. Alternatively, they can be stapled as shown in Figure 8. 274 or adhesive, or the protruding portion is The protruding portion of the upper bent portion 271 without the form is welded to the lower surface of the It is attached to the lower surface by having. The staples are used as shown in Figure 8. It is attached to the lower surface by being attached to the lower surface. The staples are used as shown in Figure 8. If the staples are It is preferable to use pure iron. Adhesives or heat seals may also be used. The heated seal is designed to shorten the air gap at the edge of the fold. It can be arranged to weld most or all of the forms within the area.

The flap 268 is particularly useful if it is intended to hold thin magnetic disks. For example, there is no need for envelope 262 in FIG.

The magnetic protection of FIG. 8 consists of two layers of foil 2 separated by a non-magnetic gap. 64 is further improved.

In this way, one side is coated with a layer of polyethylene, polystyrene, etc. approximately 10 microns thick. Two layers of 0.5 to 1 mil thick steel foil coated with The resulting assembly can also be laminated with one thin coating between the layers. Wear. The foam is designed so that the outer surface of the outer foil supports a thin coating as rust protection. It can also be glued to one uncoated side of the iron foil, as shown in FIG.

Claims (12)

[Claims] 1. A pair of cross-sectional tensioned polyethylene sheets having a total thickness of about 2 to about 3 mils. about 1/32 to about 1/8 inch thick elastic plastic foam laminated to A coil of metal wrapped in a laminate with a layer of. 2. The metal coil according to claim 1, wherein the paper layer comprises a foam and a tensioning sheet. A metal coil characterized by being laminated in between. 3. about 1 to about 100 mm laminated to an open step pole about 1 to about 4 mm thick. The gasket is protected by a 3mm thick cushioned foam wrapper. lath board. 4. A glass plate according to claim 3, wherein the glass plate comprises two sheets of laminate. Sandwiched between the foam sides, the two laminate sheets fit together around the glass pane. A glass plate characterized by being glued. 5. Approximately 1 mm or more is laminated on the opening side of a corrugated pole with a thickness of approximately 1 to 4 mm. Packaging laminate with a layer of cushioning foam of approximately 3 mm. 6. 6. The packaging laminate of claim 5, wherein the outer surface of the foam is Cohesive--When the two sheets of the laminate are brought into face-to-face engagement of the non-adhesive layers. coated with a cohesive-nonadhesive layer that adheres the sheets to each other. packaging laminate. 7. A sheet-like material in which at least the outermost winding portion is protected by the laminate according to claim 5. metal coil. 8. A stacked motor vehicle in which the individual wheels are separated by a laminate according to claim 5. moving wheels. 9. The laminate according to claim 5, between the foam and the open side of the corrugated pole. allows the laminate to be rolled onto a core approximately 8 cm in diameter. A laminate characterized in that it has a foam support web thin enough to 10. Metalized polyethylene terephthalate backing with a thickness not exceeding approximately 25 microns Cushioning foam with a thickness of about 1 to about 7 mm is laminated on the backing sheet. In packaging laminates that have a layer of The non-laminated side of the foam is metallized on both sides to protect the object from sliding on the surface. Sufficient anti-static material to prevent the build-up of static charges that could cause damage Packaging laminate characterized by supporting quantity. 11. The packaging laminate according to claim 10, wherein the backing sheet has a A packaging laminate characterized by a thickness of 20 microns. 12. A solid state electrical circuit board packaged with the laminate of claim 10.