CN1324225A - Food container having substrate impregnated with particulate material - Google Patents
Food container having substrate impregnated with particulate material Download PDFInfo
- Publication number
- CN1324225A CN1324225A CN99812488A CN99812488A CN1324225A CN 1324225 A CN1324225 A CN 1324225A CN 99812488 A CN99812488 A CN 99812488A CN 99812488 A CN99812488 A CN 99812488A CN 1324225 A CN1324225 A CN 1324225A
- Authority
- CN
- China
- Prior art keywords
- food containers
- granular materials
- substrate
- external facing
- facing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G19/00—Table service
- A47G19/02—Plates, dishes or the like
- A47G19/03—Plates, dishes or the like for using only once, e.g. made of paper
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G19/00—Table service
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
- A47J36/04—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay the materials being non-metallic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/34—Trays or like shallow containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/58—Cuttability
- B32B2307/581—Resistant to cut
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Wrappers (AREA)
- Table Devices Or Equipment (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Laminated Bodies (AREA)
- Paper (AREA)
Abstract
A food container (10) having a first user-facing surface (11) and an opposed second surface (12). The food container (10) comprises a substrate (30). The substrate has particulate material juxtaposed with the user facing surface. Furthermore, a cut-resistant external facing (32) may be juxtaposed with and preferably coincident the user facing surface (11). The external facing (32) is disposed on the substrate (30). In this configuration, both the external facing (32) and the substrate (30) comprise particulate material. Optionally, an intermediate facing (40) may be disposed between the external facing (32) and the substrate (30). The intermediate facing (40) may also comprise particulate material (36). The external facing (32), intermediate facing (40) and/or substrate may comprise binder material. The binder material may be clay or resin. Preferably, the particulate materials (34, 36) have a Mohs hardness of at least 3 and a particle size of at least 5 microns.
Description
Invention field
The present invention relates to food containers, particularly having provides the food containers towards the user surface that improves anti-cutting.
Background of invention
Disposable foodstuff vessel is being known in the art.Disposable foodstuff vessel comprises common paper disc, bowl, clamshell container, dish, cutting plate etc.
Given sizable concern in this area for these manufacturing, molding and distortion that exceed the food containers of single plane.In deformation method, prepare blank.Blank inserts between the pressing plate that cooperates and pressurized.The periphery of blank can have radial slot.Radial slot is used to accumulate the material that is out of shape by pressing plate.Exemplary technology is included in the following patent: authorized the United States Patent (USP) 3033434 of Carson on May 8th, 1962; Authorized people's such as Morris United States Patent (USP) 4026458 on May 31st, 1977; Authorized people's such as Marx United States Patent (USP) 4606496 on August 19th, 1986; Authorized people's such as Van handel United States Patent (USP) 4609140 on September 2nd, 1986; Authorized people's such as Van handel United States Patent (USP) 4721500 on January 26th, 1988; Authorized people's such as Baum United States Patent (USP) 5230939 on July 27th, 1993; Authorized people's such as Cheshire United States Patent (USP) 5326020 on July 5th, 1994.The content of above-mentioned patent is quoted as a reference herein.
Yet the above-mentioned trial in this area has several shortcomings.As for the multiple trial of the rigidity of improving food containers and stability illustrated, the trial of prior art can not provide the food containers with sufficient intensity.Food can overflow when the shortage of intensity caused food containers that too much food is housed, and perhaps exceedingly was limited in the amount of food that can be placed in preset time in the food containers.
This area has also been carried out some and has been attempted improving the rigidity of this food containers.For example, food containers well known in the art have diapire, around diapire and be arranged on the sidewall of diapire radially outer, around sidewall and be arranged on the edge of sidewall radially outer.Also attempt for the food containers that has compact area at sidewall this area.Similarly, the food containers with fine and close circle spacing zone of the annulus that radially extends through the edge also is known.These trials of this area are declared bending resistance can be provided on total.The example of these trials is authorized people's such as Marx United States Patent (USP) 4606496 and was authorized people's such as Van handel United States Patent (USP) 4609140 on September 2nd, 1986 referring on August 19th, 1986.
The food containers of prior art has coating to improve anti-liquid (as grease etc.) permeability.Coating can also be used to provide anti-cutting, gloss, printing ink absorption of finished product etc.The example of these trials comprises authorized the United States Patent (USP) 5776619 of Shanton on July 7th, 1998.Shanton discloses a kind of cardboard of band coating, and it has two coatings, promptly basic coating and top coat.Each coating comprises polymerization latex and granular pigment.Top coat has about 90 parts of kaolinic compounds, and wherein about 80% particle size is less than 2 microns.In addition, the United States Patent (USP) 5709913 of authorizing people such as Andersen on January 20th, 1988 discloses the paper disc of inorganic filling in example 112, it is said to have the rigidity bigger than traditional paper disc.
Another of this area attempted authorizing on June 3rd, 1997 in people's such as Ma the United States Patent (USP) 5635279 and is illustrated.People such as Ma disclose has the cardboard of polymer substrate/wax/pigment composition as Aquo-composition, and it is applicable to the corrugated paper box structure.Coating is made of pigment, comprises natural and synthetic silicate, bentonite, clay etc.The United States Patent (USP) 5494716 of authorizing people such as Seung on February 27th, 1996 discloses a kind of food disc, and it has the aquifer coating of band styrene/ethylene yogurt glue or other reagent.The United States Patent (USP) 5334449 of authorizing Bergmann on August 2nd, 1994 discloses a kind of mixture with main coating and kaolin, calcium carbonate, casein (casien) and butadiene-styrene latex.The United States Patent (USP) 5100472 of authorizing people such as Fugitt on March 31st, 1992 discloses a kind of paper and coating that contains deionization clay or calcium carbonate.
Carried out the trial of using granular materials to improve wearability in non-approximate field.For example, the United States Patent (USP) 5558906 of authorizing people such as Albrinck on September 24th, 1996 discloses a kind of ornamental lamination, and it has high-abrasive material, comprises that particle size is about 25 microns and about 3 microns bauxite particles, and both become 2: 1 ratio.
In addition, as the coloring earth of titanium oxide, water and as kaolinic granular filler in non-approximate field (as thin paper) as opacifying agent.Example is included in following and the present invention to be had in the patent of commonly-assigned us: the United States Patent (USP) 4952278 of authorizing people such as Gregory August 28 nineteen ninety; Authorized people's such as Vinson United States Patent (USP) 5611890 on March 18th, 1997; Authorized people's such as Vinson United States Patent (USP) 5672429 on September 30th, 1997.The content of above-mentioned patent disclosure is incorporated herein by reference.In addition, filler and cationic starch be instruction to some extent in such as non-approximate fields such as newsprint productions, authorized the United States Patent (USP) 5670021 of Owens referring on September 23rd, 1997.
Therefore, the invention provides a kind of food containers with cut resistance surface, this surface is compared with the surface in the various trials of prior art, operates simplyr, and the consumer more takes like a shot.Particularly, the invention provides a kind of food containers with cut resistance surface, the ability of anti-unexpected cutting has not only been improved and to the permeability resistance of liquid (as grease) in this surface, and better sense of touch is provided when using as common tablewares such as silverwares.
Summary of the invention
The present invention is a food containers.Food containers have first towards user surface and with the first surface opposing second surface.Food containers has the anti-cutting granular materials in the substrate of being immersed in.This food containers also can have the optional external facing of band granular materials.The Mohs' hardness that granular materials has is at least 3, and preferably is at least 7.
The particle size of granular materials is at least 5 microns, and is preferably at least 10 microns.
Brief description of drawings
Fig. 1 is the perspective view of food containers of the present invention;
Fig. 2 is the partial sectional view along 2-2 line intercepting among Fig. 1;
Fig. 3 is the partial sectional view that is similar to Fig. 2, shows the food containers with middle surface layer.
The detailed description of invention
With reference to Fig. 1-2, food containers 10 of the present invention can comprise dish, bowl, dish, clamshell container, cutting plate or other any configuration well known in the art.
Food containers 10 of the present invention generally includes spill first surface 11 and convex second surface 12.The spill first surface 11 of food containers 10 is in use common sides towards the user.The convex side of food containers 10 in use usually away from user and seating on as horizontal surfaces such as desks.
Food containers 10 therefore comprise first towards the user surface and with first surface 11 opposing second surface 12.Food containers 10 also has the external facing 32 of anti-cutting, and it is with first surface 11 and put and preferably overlap.Resist the external facing 32 that cuts to comprise and be arranged on a granular materials 34 in the synusia.The granular materials 34 of anti-cutting external facing 32 is arranged in the substrate 30 and by its support.
Food containers 10 comprises center 14 and surrounding periphery 16.Center 14 is preferably disposed on two different planes with periphery 16, and smooth food containers 10 also it is contemplated that and is the inferior embodiment that selects of the present invention certainly.Smooth food containers 10 can be as for example food dish or cutting plate.
Center 14 limits the XY plane of food containers 10.The Z of food containers 10 is to perpendicular to the XY plane.Food containers 10 has 14 transition regions 20 to periphery 16 from the center.Periphery 16 is upwards spaced apart with center 14 at Z, and perhaps food containers 10 can be smooth, as mentioned above.In normal the application, periphery 16 is raised with respect to center 14.The center 14 of food containers 10 defines the first of food containers 10.Similarly, the periphery of food containers 10 defines the second portion of food containers 10.
Therefore, food containers 10 is preferably multilevel.The multilevel meaning is that the different piece of food containers 10 is positioned at different planes.An example of many flatnesses of food containers 10 of the present invention illustrates by the center 14 and the periphery 16 of food containers 10.The center 14 and the periphery 16 of food containers 10 are upwards spaced apart at Z, thereby make food containers 10 present many planes.
What need is to be contained in the buildup of material that takes place when food containers 10 is shaped.As known in the art, fold and crease are usually used in this purpose.Can conceive various folds and crease, particularly at radial oriented accumulation crease.
Center 14 or periphery 16 needn't be parallel to the XY plane or roughly be the plane.For example, having roughly, the bowl of concave bottom is suitable for using the present invention.14 the basal surface from the center (choosing when food containers 10 is in normal operating condition and approximate horizontal position) is called the Z of food containers 10 to the degree of depth 19 to the distance of the top surface of periphery 16.If the different piece at food containers 10 has different depth, then Z gets maximum Z to distance to the degree of depth.
The border of periphery 16 and shape are limited by the edge 18 of food containers 10.Can recognize: according to the accurate dimension and the designed use of food containers 10, the periphery 16 of food containers 10 and the size of zone line 14 and relative scale can change.Although considered circular foods container 10, those of ordinary skill in the art will appreciate that: the suitable shape of food containers 10 and the degree of depth can be selected with regard to purposes of the present invention, and the present invention is not restricted.That other suitable shape comprises is square, rectangle, ellipse, various polygons etc.
The substrate 30 of food containers 10 can comprise at least two lamellas, first lamella and second lamella.Second lamella can make at least a portion of food containers 10 not have second lamella less than first lamella.Second lamella and first lamella can be concentric.Can recognize: the alternative (not shown) of food containers 10 can also comprise 3 or multi-disc layer more.
In particularly preferred embodiment, food containers 10 comprises one deck rigid material lamella, the material that particularly is used for supporting anti-cutting external facing 32 and the surperficial towards the user of food containers 10 and puts and preferably overlap.Suitable rigid material comprises foam, plastics and various other synthetic material.Food containers 10 is preferably made by cellulose, and can or comprise the various paper-making fibre layers of regenerated cellulose by brown paper, hard bleaching template (SBS).Food containers 10 is can also be by wood pulp slurry molded or be pressed between the pressing plate that cooperates by blank.These manufacture methods all are known in this area.
External facing 32 has the ability that opposing hot grease based food penetrates into food containers 10 substrates 30.In addition, external facing 32 is when the first surface 11 of user's contact food container 10 or with providing pleasant sense of touch thereon during cutting food products as tablewares such as cuttves.
Those of ordinary skill in the art will recognize that: for external facing 32, granular materials 34 is particularly preferred.Have discontinuous and material discrete particles and make hard surface layer and anti-cutting, and not crisp.This combination makes that food containers 10 can be handled, transportation etc., in normal transportation and use, can not make external facing 32 surface fracture, break into pieces, layering or fragmentate.
Importantly: the first surface 11 of food containers 10 is hard and pliable and tough, rather than hard and crisp.This situation also makes the first surface 11 anti-cuttings of food containers 10.As used in this, do not penetrate the substrate 30 of food containers 10 usually if the surface allows the user to apply normal pressure in food cooking and other preparation food, then the surface can consider it is " anti-cutting ".11 pairs of finger tips of first surface directly form appropriate sense of touch and along with also being important by various tableware transmission.
Preferably: the Mohs' hardness that constitutes the granular materials 34 of external facing 32 is at least 3, preferably is at least 7, in addition near or greater than 9.Find that the Mohs' hardness between 6.5 to 7.5 is applicable to the present invention for required protection food containers 10.The granular materials 34 Mohs' hardness grades of external facing 32 (according to 1 to 10 talcum powder to the diamond level measurement) are documented in the various reference manuals, as " Chemical Physics handbook (1997-1998, the 78th edition) 4-132 to 4-139,12-93 is to 12-97,12-205 uses this document herein as a reference to the 12-206 page or leaf.Certainly, the hardness that constitutes the granular materials 34 of external facing 32 is determined in the substrate 30 that granular materials 34 is attached to food containers 10 or before being set on it.
By the granular materials 34 that above-mentioned hardness is set, obtain having the food containers 10 of suitable and pleasant sense of touch.Such hardness makes that the user can be with sharp table knife cutting food products on food containers 10, and gravy or roasting juice infiltration food containers 10 and so on offending thing can not take place when table knife was cut food containers 10.
In addition, be surprised to find that granular materials 34 has preferred particle size.It is very necessary that preferred particle size can not make us feeling unhappy for giving coarse sense of touch.Therefore, the user needn't worry to cut food on this food containers 10 with sharp table knife or other tableware.
The particle size that constitutes the granular materials 34 of external facing 32 is at least 5 microns, is preferably 10 microns.Granular materials 34 is of a size of 20 to 200 microns, and may be in 50 to 200 microns scope.With from VWR Scientific Products Corp.The catalog number (Cat.No.) of buying is that the L3P sound wave sifter of 57353-035 is measured particle size.
The granular materials 34 that constitutes external facing 32 can be the known in this field and commercially available mineral and mixture or several mixture of other type of particle.For example, various particles comprise aluminium, silicon, carbonate, oxide, carbide, nitride, bromide, hard metal, carbide alloy, hard element.If selection carbide, suitable carbonization thing comprise ramet, titanium carbide, zirconium carbide, beryllium carbide or carborundum (diamond dust).If select boride for use, suitable boride comprises aluminium boride, tantalum boride, boronation zinc, titanium boride.Also can use boron.If the use nitride, suitable nitride comprises aluminium nitride, zinc nitride and titanium nitride.Comprise that the hard metal alloys as iron, steel and non-ferrous metal can be used as granular materials 34.Have been found that pottery, particularly porcelain class ceramic particle material 34 as porcelain are suitable especially.More particularly, aluminium oxide (corundum), silica (quartz), calcium carbonate, lithium aluminium silicate, feldspar also are suitable.Silica, calcium carbonate and aluminium oxide can be from J.T.Baker Company, a division ofMallincroft Baker, and Inc., of Phillipsburg, NJ buys, and catalog number (Cat.No.) is respectively JT3405, JT1301 and JT0536.
Granular materials 34 can also comprise clay.Have been found that kaolin is suitable especially.Suitable kaolin can be from J.T.Baker Company ofPhillipsburg, and NJ buys, and catalog number (Cat.No.) is JT2242.
Have been found that the suitable mixture that is used for external facing 32 is 80% kaolin and 20% aluminium oxide.Other suitable mixture is 80% kaolin and 20% calcium carbonate.Percentage described here all is weight percentage, except as otherwise noted.
Granular materials 34 (comprising any clay) can add in the water-based resin to form coating.Acrylic resin is particularly preferred.Suitable coating compounds can have the resin of 50-90% and be blended in wherein 10% to 50% granular materials 34.
The suitable addition that constitutes the granular materials 34 of food containers 10 first surfaces 11 external facings 32 is every square metre of about 0.5 to 100 gram, is preferably every square metre of about 1 to 50 gram.Find that following circular foods container 10 is suitable: about 22.9 centimetres of finished diameter, the granular materials 34 that constitutes external facing 32 are 0.1 to 2 gram.
It is desirable to: the granular materials 34 that comprises any resin or other used carrier is applied in the substrate 30 of food containers 10 becomes single synusia.Single synusia with the advantage that the instruction of double-layer tablet in the prior art is compared is: control addition more accurately, once apply operation, and can supply with the drying process of mass production.On the contrary, the instruction of double-layer tablet need be carried out twice raw-material dress and throws, twice granular materials 34 is applied to processing in the substrate 30 in the prior art.
The final coating that constitutes external facing 32 can form in the substrate 30 of horizontal vessel 10 after-applied to it on.The coating that comprises granular materials 34 can apply by scraper coating well known in the art, printing, spraying etc.If adopt scraper to apply, the hardness of scraper must be the same hard with granular materials 34 at least.Preferably, adopt the air doctor blade painting method that granulate mixture is applied in the substrate 30.Preferably, the substrate 30 of food containers 10 can not be immersed in the coating, and the second surface 12 of food containers 10 keeps remaining uncoated like this.
Those of ordinary skill in the art will appreciate that many distortion all are feasible.For example, granular materials 34 can apply with gradient.Near the addition that gradient is preferably the center of in use cutting the more food containers 10 of general generation is bigger.More a spot of granular materials 34 can be applied to the exposed side and the periphery 16 of food containers, and the effect of these parts normally is received within food in the periphery 16 of food containers 10.Can preserve granular materials 34 like this, and granular materials 34 concentrated in use be subjected to usually in the zone of greatest wear.This arrangement has formed Z to gradient, and along with close to the center of food containers 10, closeness increases, and along with close to the edge of food containers 10, closeness reduces.
Perhaps, granular materials 34 has the zone of granular materials 34 and does not have between the zone of granular materials 34 with the XY change in pattern at first surface 11.Granular materials 34 can be applied to for example checkerboard pattern or one-tenth band shape.The appropriate pattern of band comprises concentric ring, RADIAL (straight line or helix), parallel lines etc.This layout provides following advantage: food containers 10 is flexible in the zone that does not have granular materials 34, and is hard in the zone with granular materials 34.Therefore, obtained having the food containers 10 of the external facing 32 of anti-cutting.
Optionally, external facing 32 can have at least one protective finish (not shown).Protective finish protection granular materials 34 and external facing 32, control comes off from the substrate of food containers 10.In addition, protective finish limits and provides more smooth first surface 11.Preferably, protective finish does not provide too smooth first surface 11, otherwise, can't obtain suitable sense of touch.
Protective finish can comprise acrylic resin.Preferably, acrylic resin is more transparent or translucent, thereby obtains gratifying first surface 11 on aesthetic effect.Protective finish can apply by printing well known in the art, spraying, dipping, scraper coating, air doctor blade coating etc.
Those of ordinary skill in the art can recognize: external facing 32 can comprise one deck synusia or multilayer synusia.External facing 32 can have one or more jointing materials 36.Jointing material 36 comprises that clay, resin or other Mohs' hardness are greater than 3 or be not more than 3 but play the particulate matter that the bonding one-tenth of granular materials 34 is constituted the matrix of external facings 32.Therefore, external facing 32 can not have clay, does not have resin or both not to have and still contain granular materials 34.
If external facing 32 has a plurality of synusia, synusia can not have resin and other synusia does not have clay.A synusia can not have clay and resin.
Certainly, those of ordinary skill in the art can recognize: the intersection between synusia has some blending clay and resin-bonding materials slightly.Similarly, this blending meeting occurs between the substrate 30 of external facing 32 and food containers 10.Yet the synusia that this blending does not hinder external facing 32 is made of granular materials 34 and single jointing material 36 basically.The blending at intersection has taken place in the migration of various jointing materials 36 between the multilayer owing to external facing 32.
External facing 32 is arranged on the matrix 30." be arranged on ... on " situation comprise that external facing 32 directly remains in configuration in the substrate 30 and external facing 32 and is attached to base by middleware (as middle surface layer 40) and sends out configuration on 30.Middle surface layer 40 can have the composition identical with external facing 32.
With reference to figure 3, preferably middle surface layer 40 has different compositions with external facing 32.This makes people middle surface layer 40 and external facing 32 can be had required property.For example, external facing 32 and middle surface layer 40 one of them can not have resin.In external facing 32 and the middle surface layer 40 another can not have clay.One of them can not have resin and clay external facing 32 and middle surface layer 40, and in external facing 32 and the middle surface layer 40 another can contain clay and resin.
Perhaps, external facing 32 can only contain a kind of jointing material 36, and middle surface layer 40 contains two kinds of (or a kind of) jointing materials 36.All these distortion can be conceived and all in the present invention for required protection scope.
In particularly preferred embodiment, middle surface layer 40 is arranged in the substrate 30.Middle surface layer 40 comprises granular materials 34 and clay jointing material 36.External facing 32 is arranged on the middle surface layer 40.External facing 32 comprises resin-bonding material 36 and granular materials 34.The advantage of this layout contains clay in the surface layer 40 in the middle of being, can be bonded in securely at the bottom of the cellulose base on 30.External facing 32 has resin, can provide gravel less sense of touch.
Granular materials 34 is immersed in the substrate 30.The meaning of " soaking " is that granular materials 34 directly contacts with substrate 30, and perhaps granular materials 34 is positioned on the carrier (not shown) that combines with substrate 30.
Carrier can be the sheet material of general plane shape, can be independent of substrate 30 and exist.Granular materials 34 is attached on the carrier, and carrier is attached in the substrate 30 with bonding agent or other method well known in the art subsequently.Carrier needn't keep the required form shown in the accompanying drawing, but only needs can be attached in the substrate 30 and roughly be consistent with it.
For example, carrier can be the lightweight paper of thin paper sheet or other grade, and it is attached in the individual layer SBS substrate 30 subsequently.Before being attached to SBS or other matrix 30, the lightweight paper carrier of thin paper or other grade has the granular materials 34 that is immersed in wherein.The carrier of thin paper sheet or other lightweight grade can be according to any instruction manufacturing well known in the art, for example hereinafter quote to have the patent of commonly-assigned us described with the present invention.
Another kind of scheme is, carrier can be one deck liner plate, and granular materials is immersed in wherein.This individual layer liner plate can be incorporated on the corrugated media of single face ripple substrate 30.The liner plate carrier that wherein is soaked with granular materials 34 becomes an external facing of multilayer corrugated medium well known in the art subsequently.
More preferably, granular materials 34 in the manufacture process of substrate 30 directly in conjunction with and be immersed in the substrate 30.Substrate 30 is preferably formed by wet-laying method well known in the art.In the wet-laying method, it is online that cellulose fibre, synthetic fibers or other fiber deposit to forming screen by liquid-carrier from flow box.Draining liq carrier and the dry fiber slurry that forms.Fiber can be cellulose fibre, synthetic fibers and various combination thereof.
Substrate 30 can be constant quantitative or have a plurality of quantification area.Constant quantitative substrate 30 can be according to the instruction manufacturing that has the following patent of commonly-assigned us with the present invention: authorized Morgan, people's such as Jr. United States Patent (USP) 3994771 on November 30th, 1976; Authorized people's such as Keamey United States Patent (USP) 4225382 on September 30th, 1980; Authorized people's such as Carstens United States Patent (USP) 4300981 on November 17th, 1981, these documents are incorporated herein by reference.A plurality of quantification area substrates 30 can be according to the instruction manufacturing that has the following patent of commonly-assigned us with the present invention: the United States Patent (USP) 5245025 of authorizing people such as Trokhan on September 14th, 1993; Authorized people's such as Trokhan United States Patent (USP) 5503715 on April 2nd, 1996; Authorized people's such as Trokhan United States Patent (USP) 5534326 on July 9th, 1996; Authorized people's such as Phan United States Patent (USP) 5804281 on September 18th, 1998.The disclosure of above-mentioned patent is quoted as a reference herein.
If necessary, substrate 30 can become net to make by gas method well known in the art.If substrate 30 is that the gas method is into the net, jointing material 36 and/or granular materials 34 can become gradient to distribute as required.Making the gas method becomes net substrate 30 and provides jointing material 36 and/or the appropriate device of this distribution of granular materials 34 has in the following patent of commonly-assigned us open with the present invention: the United States Patent (USP) 5445777 of authorizing people such as Noel August 29 nineteen ninety-five; Authorized people's such as Noel United States Patent (USP) 5558832 on September 24th, 1996.The disclosure of above-mentioned patent is quoted as a reference herein.Preferably, substrate 30 has the gradient of crossing, and is bigger towards the closeness of the granular materials 34 of first surface 11.
Granular materials 34 can be arranged in the flow box that uses in the wet-laying operation or deposit from flow box.This layout can foretell and form a kind of food containers 10 with substrate 30, and granular materials is immersed in the substrate and than homogeneous or evenly distribute.Yet in undesirable embodiment, granular materials 34 is towards the discharging of the bottom of shaping fourdrinier wire and with food containers 10 second surfaces 12 and put.This layout has formed has the food containers 10 of Z to gradient, and granular materials 34 has less closeness at first surface 11.This layout is undesirable, because the user wishes more (rather than less) granular materials 34 is with first surface 11 and put.
In order to overcome this state, can in the wet-laying operation, adopt the flow box of layering.In the flow box of layering, the different materials of two conduits or many conduits can be deposited on the shaping fourdrinier wire.First conduit is the conduit that the fiber of the most close shaping fourdrinier wire and deposition at first contacts with the shaping fourdrinier wire.Second, third of flow box or uppermost conduit can comprise granular materials 34, or are preferably the granular materials 34 that is deposited in fiber and the liquid-carrier slurries.This structure is better than above-mentioned content of the discussions part and is: granular materials 34 is arranged to certain gradient, and it has bigger Z to closeness towards first surface 11.Therefore, granular materials 34 than many parts and first surface 11 and put, improve anti-cutting and provide pleasant sense of touch for the user.
In alternative, can use the flow box of a plurality of independent conduits.In this layout, preferably first flow box is deposited on fiber slurry and liquid-carrier on the shaping fourdrinier wire.One or more continuous flow boxs are deposited on the composition of granular materials 34 and/or granular materials 34 and fiber on first fiber slurry.This set makes and to block from the flowing of the granular materials 34 of follow-up flow box from the fiber of first flow box deposition, makes granular materials 34 be deposited on the fiber slurry near surface of formation.Fiber slurry adopts any method drying well known in the art subsequently.Shaping fourdrinier wire desiccated surface outwardly just is called the first surface 11 of food containers 10 certainly.
If desired, becoming the substrate 30 of network method manufacturing according to the gas method also can be layering.Become to make in the network method advantage of substrate 30 layerings to be in the gas method: granular materials 34 and/or jointing material 36 can be arranged to certain gradient, and it has juxtaposed big Z to closeness towards first surface 11.
Be suitable for having in the United States Patent (USP) of commonly-assigned us open in following and the present invention the apparatus and method of granular materials 34 and/or jointing material 36 combinations: the United States Patent (USP) 5661890 of authorizing people such as Vinson on March 18th, 1997; Authorized people's such as Vinson United States Patent (USP) 5672249 on September 30th, 1997.The disclosure of above-mentioned patent is quoted as a reference herein.
Claims (10)
1. food containers, described food containers have first towards user surface and with its opposing second surface, described food containers has substrate, it is characterized in that, described substrate comprises the granular materials that is immersed in wherein, and the Mohs' hardness of described granular materials is approximately 3 at least.
2. food containers as claimed in claim 1 is characterized in that, also comprises the external facing that is arranged in the described substrate and limits described first surface, and described external facing has the granular materials that is deposited on wherein.
3. as claim 1 and 2 described food containers, it is characterized in that described external facing also comprises clay or resin.
4. as claim 1 and 2 described food containers, it is characterized in that described external facing does not have clay or resin.
5. as claim 1,2,3 and 4 described food containers, it is characterized in that, be arranged in the described substrate or the particle size of the described granular materials in the described external facing is at least about 5 microns.
6. as claim 1,2,3,4 and 5 described food containers, it is characterized in that surface layer in the middle of also comprising is arranged in the described substrate and between described external facing and described substrate, described middle surface layer comprises granular materials.
7. food containers as claimed in claim 6 is characterized in that, described middle surface layer also comprises jointing material.
8. as claim 1,2,3,4,5,6 and 7 described food containers, it is characterized in that described substrate is a wet-laying.
9. as claim 1,2,3,4,5,6,7 and 8 described food containers, it is characterized in that described granular materials becomes the gradient setting.
10. food containers as claimed in claim 15 is characterized in that, also comprises protective finish.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18861098A | 1998-11-09 | 1998-11-09 | |
| US09/188,610 | 1998-11-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1324225A true CN1324225A (en) | 2001-11-28 |
Family
ID=22693860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99812488A Pending CN1324225A (en) | 1998-11-09 | 1999-11-03 | Food container having substrate impregnated with particulate material |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP1128753A1 (en) |
| JP (1) | JP2002529321A (en) |
| KR (1) | KR20010086002A (en) |
| CN (1) | CN1324225A (en) |
| AU (1) | AU1243200A (en) |
| BR (1) | BR9915171A (en) |
| CA (1) | CA2348903A1 (en) |
| TW (1) | TW486425B (en) |
| WO (1) | WO2000027257A1 (en) |
| ZA (1) | ZA200103014B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102178433A (en) * | 2011-01-21 | 2011-09-14 | 余戈平 | Tray |
| CN107501628A (en) * | 2017-10-09 | 2017-12-22 | 常州莱尚纺织品有限公司 | A kind of preparation method of water-resistant type edible disposable chopsticks |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE534151C2 (en) * | 2009-02-16 | 2011-05-10 | Stora Enso Ab | Process for making paper or cardboard |
| EP3878327A4 (en) * | 2018-11-06 | 2022-08-03 | Kyocera Corporation | Cooking tool |
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- 1999-11-03 BR BR9915171-5A patent/BR9915171A/en not_active IP Right Cessation
- 1999-11-03 CA CA002348903A patent/CA2348903A1/en not_active Abandoned
- 1999-11-03 JP JP2000580498A patent/JP2002529321A/en not_active Withdrawn
- 1999-11-03 CN CN99812488A patent/CN1324225A/en active Pending
- 1999-11-03 WO PCT/US1999/025935 patent/WO2000027257A1/en not_active Application Discontinuation
- 1999-11-03 AU AU12432/00A patent/AU1243200A/en not_active Abandoned
- 1999-11-03 EP EP99971679A patent/EP1128753A1/en not_active Withdrawn
- 1999-11-03 KR KR1020017005665A patent/KR20010086002A/en not_active Application Discontinuation
- 1999-11-09 TW TW088119564A patent/TW486425B/en not_active IP Right Cessation
-
2001
- 2001-04-11 ZA ZA200103014A patent/ZA200103014B/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102178433A (en) * | 2011-01-21 | 2011-09-14 | 余戈平 | Tray |
| CN107501628A (en) * | 2017-10-09 | 2017-12-22 | 常州莱尚纺织品有限公司 | A kind of preparation method of water-resistant type edible disposable chopsticks |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2348903A1 (en) | 2000-05-18 |
| EP1128753A1 (en) | 2001-09-05 |
| AU1243200A (en) | 2000-05-29 |
| KR20010086002A (en) | 2001-09-07 |
| ZA200103014B (en) | 2002-07-11 |
| BR9915171A (en) | 2001-08-14 |
| WO2000027257A1 (en) | 2000-05-18 |
| TW486425B (en) | 2002-05-11 |
| JP2002529321A (en) | 2002-09-10 |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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