WO1992004254A1 - Coussinet absorbant avec papier resistant a l'etat humide - Google Patents

Coussinet absorbant avec papier resistant a l'etat humide Download PDF

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Publication number
WO1992004254A1
WO1992004254A1 PCT/US1991/006530 US9106530W WO9204254A1 WO 1992004254 A1 WO1992004254 A1 WO 1992004254A1 US 9106530 W US9106530 W US 9106530W WO 9204254 A1 WO9204254 A1 WO 9204254A1
Authority
WO
WIPO (PCT)
Prior art keywords
pad
layer
absorbent
food product
plastic film
Prior art date
Application number
PCT/US1991/006530
Other languages
English (en)
Inventor
David Lynn Kinard
Robert Michael Woods
Original Assignee
Sealed Air Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sealed Air Corporation filed Critical Sealed Air Corporation
Publication of WO1992004254A1 publication Critical patent/WO1992004254A1/fr

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Classifications

    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
    • B65D81/264—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing liquids

Definitions

  • the present invention relates to an improved absorbent pad and receptacle of the type used to contain and display various food products, and which act to substantially improve the appearance and shelf- life of the product.
  • Miller disclose an absorbent pad adapted for use in food product receptacles of the described type, and which comprises a mat of liquid absorbent material, an upper liquid impermeable plastic sheet overlying the absorbent mat, and a perforated bottom plastic sheet underlying the absorbent mat.
  • an absorbent pad for use in the receptacle for displaying food products which substantially eliminates any limitations of absorption caused by transmittal, storage or other handling of the receptacle in a position out of horizontal.
  • Figure 1 is an exploded perspective view of an absorbent pad embodying the features of the present invention
  • Figure 2 is a perspective view of the pad shown in Figure 1; and Figure 3 is an enlarged, fragmentary sectional perspective view of the pad shown in Figures 1 and 2.
  • Figure 4 is a perspective view of a support tray containing an absorbent pad, together with the packaged food product and surrounding plastic wrap.
  • Figure 5 is a perspective view of another embodiment of the container and pad, which comprises an absorbent pad disposed within a flexible transparent plastic bag, together with the packaged food product.
  • Figure 6 is an exploded perspective view of an absorbent pad providing an alternative embodiment of the present invention.
  • Figures 1 and 3 disclose a food product package for containing and displaying food products which embodies the present invention, and which comprises a support container 10 and an absorbent pad 12.
  • the support container 10 may be fabricated from a variety of materials including a relatively rigid molded foam plastic material to form a tray.
  • the tray includes a rectangular bottom wall 20 and upstanding side walls 22.
  • the absorbent pad 12 is also rectangular, and is sized to overlie substantially the full area of the bottom wall 20 of the tray. In use, absorbent pad 12 is placed adjacent to bottom wall 20 of tray 10 and the food product to reside therein is then placed on top of pad 12.
  • FIG. 5 another embodiment of the present invention is illustrated wherein the container 10 is a flexible transparent plastic bag 10a.
  • Absorbent pad 12 resides within a plastic bag 10a which has a closeable end opening.
  • Absorbent pad 12 is placed adjacent to the wall of the bag and the food product B to reside therein is placed on top of pad 12.
  • the container in the form of a bag 10a is then sealed in a conventional manner to form a food product package for containing and displaying food products in an attractive manner.
  • absorbent pad 12 comprises an intermediate layer, mat 16 of liquid absorbent material, an upper sheet or layer 14 of liquid impervious plastic film material overlying absorbent mat 16, and a lower sheet or layer 18 of wet strength paper underlying mat 16.
  • absorbent pad 12 may be inverted for uses outside that of food containment and display such that the lower sheet is a liquid impervious plastic film material and the upper sheet is a wet strength paper.
  • the thickness of the mat 16 may be varied to provide the desired amount of absorbency, and typically is between about 1/8 to 1/4 inches so as to permit absorption and retention of a substantial quantity of liquid.
  • the mat may be composed of a number of absorbent materials, such as conventional defiberized wood pulp (known in the art as wood fluff) , synthetic pulp such as rayon, cotton, or combinations of the above.
  • mat 16 is composed of hydrophilic cellulose based fibers, and more particularly, the mat is principally composed of a relatively thick layer of wood fluff.
  • Wood fluff is well-known in the art and consists of defiberized cellulose fibers which have been formed in a compressed batt in the manner of a non-woven fabric, and is further described below.
  • the fluff layer has little or no consistency or integrity. and thus must be supported during manufacturing operations.
  • additives may be added to the mat to increase its liquid absorbency.
  • a particular example of a suitable additive of this type is a synthesized starch, such as the starch-a ⁇ rylonitrile graft co- polymer as described in U.S. Patent No. 3,771,815. This product is marketed commercially as a free-flowing powder, which may be either sifted onto the fluff layer or sifted into the fluff chamber when the layer is being formed.
  • a bactericidal agent such as potassium sorbate, may be added to the mat to retard bacterial growth.
  • the upper and lower sheets are composed of different materials, both of which are non- reactive to food products.
  • Upper sheet 14 a layer of liquid impervious plastic film material, is a polyolefin. This polyolefin may be a polyethylene having a thickness between about 0.00035 to 0.005 inches.
  • Lower sheet 18 is a layer of wet strength paper material, preferably wet strength tissue paper. The wet strength tissue paper has a wet strength of at least about 10% of the dry cross direction tinsel strength.
  • the peripheral edges of the upper and lower sheets 14 and 18, respectively, extend beyond mat 16. Sheets 14 and 18 are preferably secured together as shown at 30 by any suitable means, such as a hot melt adhesive applied to the plastic film, to thereby enclose the mat of absorbent material therebetween.
  • the manufacturing process is performed using a roll of polyethylene to form the layer of liquid impervious plastic film material 14 and a roll of wet strength tissue paper to form the layer of wet strength paper material 18.
  • the process uses a shredding apparatus to reduce a roll of suitable absorbent material into a defiberized mass, which is then deposited with the aid of a vacuum into the loose absorbent mat.
  • a sheet of paper wadding may alternately be used as a carrier for the mat.
  • the mat is cut into strips and then cross cut into individual mats and separated for insertion between the sheet of impervious plastic film and the sheet of wet strength paper.
  • the two sheets which extend beyond individual mats 16 are sealed by passing the composite uner rollers to bond an adhesive that is previously applied to one or both of the sheets.
  • the suitable adhesive is preferably applied to the sheet of impervious plastic film.
  • the absorbent material in individual mat form is placed between the polyethylene and the wet strength paper to form a sheet of absorbent pads.
  • Individual pads are formed by cutting the sheet of pads into strips using rotating knives and then cross cutting the strips to form individual absorbent pads using a shear knife.
  • a rigid spacer means 17 may be inserted between upper sheet 14 and lower sheet 18 to maintain the separation of the upper and lower sheets under a co pressive load.
  • the spacer means could be a net-like thermoplastic foam material, of the type further described in U.S. Patent No.
  • spacer means 17 may comprise a plurality discrete elements of plastic material.
  • the spacer means can be incorporated in and among, or adjacent to, the absorbent material.
  • the spacer means is further described in U.S. Patent No. 4,321,997 to Miller.
  • the juices or liquids from the food product resting on pad 12 will tend to flow downwardly onto bottom wall 20 of tray 10 or wall of bag 10a and beneath the pad.
  • the liquids are wicked into the interior of the absorbent pad by the wet strength paper resulting in absorption of the liquids by mat 16, i.e. the absorbent intermediate layer.
  • the polyethylene layer forming the upper plastic film material layer serves as a barrier between the food product and the absorbed liquids preventing the absorbed liquids and any additives in the mat from directly contacting the food product.
  • substantially all migration of the exuded liquids back to the food product is precluded, thereby significantly alleviating the problems of spoilage and discoloration.
  • the top surface of the plastic film material 14 remains relatively clean and smooth in use thereby resulting in an aesthetically pleasing appearance providing an attractive manner for displaying and containing food products.
  • the absorbent pad 12 not only functions to wick juices and other exudants into the pad for absorption while tray 10 or bag 10a is held in a horizontal position but also acts to wick juices and other exudants into the pad for absorption when tray 10 or bag 10a is not in a horizontal position.
  • tray 10 or bag 10a is out of horizontal resulting in juices from the food products contained therein resting in one side or corner of tray 10 or bag 10a, the juices and other exudants coming into contact with a portion of the wet strength tissue paper 18 are wicked along the entire surface of the tissue paper and absorbed into mat 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Abstract

Réceptacle destiné à contenir et à exposer des produits alimentaires qui tendent à perdre du jus ou du liquide, comprenant un élément de support tel qu'un plateau (10) ou un sac et un coussinet absorbant associé. Ledit coussinet absorbant (12) comprend un tampon (16) en matériau absorbant le liquide, une plaque supérieure imperméable aux liquides (14) recouvrant le tampon absorbant et une feuille de papier inférieure résistante à l'état humide (18) située sous le tampon absorbant. Lorsqu'une denrée alimentaire est placée sur la couche supérieure du coussinet absorbant, tout liquide exsudé coule autour du coussinet et pénètre dans le tampon par action capillaire grâce à l'effet de mèche de la feuille inférieure. On empêche ainsi le contact entre les liquides et les denrées alimentaires, ce qui permet de minimiser la contamination du produit, de conserver l'apparence dudit produit, ainsi que d'améliorer sa durée de conservation. Le coussinet absorbe efficacement les liquides quelle que soit la position du réceptacle pendant le transport ou le stockage, c'est-à-dire que le réceptacle soit maintenu ou non dans une position horizontale.
PCT/US1991/006530 1990-09-11 1991-09-10 Coussinet absorbant avec papier resistant a l'etat humide WO1992004254A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US58081190A 1990-06-05 1990-06-05
US580,811 1990-09-11

Publications (1)

Publication Number Publication Date
WO1992004254A1 true WO1992004254A1 (fr) 1992-03-19

Family

ID=24322665

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/006530 WO1992004254A1 (fr) 1990-09-11 1991-09-10 Coussinet absorbant avec papier resistant a l'etat humide

Country Status (2)

Country Link
AU (1) AU8515891A (fr)
WO (1) WO1992004254A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2698041A1 (fr) * 1992-11-13 1994-05-20 Aussedat Rey Matériau d'emballage et emballage en faisant application.
EP0613834A1 (fr) * 1993-03-05 1994-09-07 PAPER-PAK PRODUCTS, INC. (a Delaware Corporation) Tampon absorbant et son procédé de fabrication
WO1998038040A1 (fr) * 1997-02-28 1998-09-03 Dyecor Limited Napperon absorbant
US6171695B1 (en) 1994-09-21 2001-01-09 Kimberly-Clark Worldwide, Inc. Thin absorbent pads for food products
AU2002301108B2 (en) * 2001-08-20 2009-05-28 Cryovac, Llc Case-ready package having absorbent pad
WO2022173361A1 (fr) * 2021-02-12 2022-08-18 Cellcomb Ab Tampon alimentaire du type poche

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321997A (en) * 1979-11-23 1982-03-30 Miller Alan H Receptacle for moisture-exuding food products
EP0353334A1 (fr) * 1988-08-05 1990-02-07 Kimberly-Clark Corporation Structure pour l'absorption des liquides libérés par des produits alimentaires

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321997A (en) * 1979-11-23 1982-03-30 Miller Alan H Receptacle for moisture-exuding food products
EP0353334A1 (fr) * 1988-08-05 1990-02-07 Kimberly-Clark Corporation Structure pour l'absorption des liquides libérés par des produits alimentaires

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2698041A1 (fr) * 1992-11-13 1994-05-20 Aussedat Rey Matériau d'emballage et emballage en faisant application.
BE1007754A3 (fr) * 1992-11-13 1995-10-17 Aussedat Rey Sa Materiau d'emballage et emballage en faisant application.
EP0613834A1 (fr) * 1993-03-05 1994-09-07 PAPER-PAK PRODUCTS, INC. (a Delaware Corporation) Tampon absorbant et son procédé de fabrication
US6171695B1 (en) 1994-09-21 2001-01-09 Kimberly-Clark Worldwide, Inc. Thin absorbent pads for food products
WO1998038040A1 (fr) * 1997-02-28 1998-09-03 Dyecor Limited Napperon absorbant
AU2002301108B2 (en) * 2001-08-20 2009-05-28 Cryovac, Llc Case-ready package having absorbent pad
US7776416B2 (en) * 2001-08-20 2010-08-17 Cryovac, Inc. Case-ready package having absorbent pad
WO2022173361A1 (fr) * 2021-02-12 2022-08-18 Cellcomb Ab Tampon alimentaire du type poche

Also Published As

Publication number Publication date
AU8515891A (en) 1992-03-30

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