CA2116997C - Bag structure and pad - Google Patents
Bag structure and padInfo
- Publication number
- CA2116997C CA2116997C CA002116997A CA2116997A CA2116997C CA 2116997 C CA2116997 C CA 2116997C CA 002116997 A CA002116997 A CA 002116997A CA 2116997 A CA2116997 A CA 2116997A CA 2116997 C CA2116997 C CA 2116997C
- Authority
- CA
- Canada
- Prior art keywords
- bag
- pad
- rear side
- strip
- side wall
- 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.)
- Expired - Fee Related
Links
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
Abstract
A bag for packaging food products that exude juices, such as meat and poultry, incorporates therein an absorbent pad which is sandwiched between an impervious surface layer and a pervious layer and retained against a lower section of the rear side wall of the bag by a retention strip made of bondable material. The retention strip may be a strip of heat-fusible material or an adhesive tape. The retention strip extends transversely across the rear side wall and an uppermost edge of the pad, and if heat-sealed, two fused lines are formed. The first fused line extends longitudinally along a leading edge of the retention strip and forwardly of the uppermost edge of the pad. A second fused line extends longitudinally across the strip, over the top impervious surface layer of the pad and on the bag rear side wall of both sides of the pad. This strip maintains the pad in position in the lowermost section of the bag and prevents the disturbance and withdrawal of the pad when the food products are inserted and removed from the bag.
Description
'_ BAG STRUCTURE AND PAD
TECHNICAL FIELD
The present invention relates to a bag for packaging food products that exude juices, such as meat and poultry, and wherein an absorbent pad is secured inside the bag on a back side wall thereof by one or more retention strips of bondable material which are secured to the back wall forwardly of an uppermost edge of the pad and also secured to the pad to maintain it in position against the back side wall of the bag, particularly when the food products are removed from the bag.
BACKGROUND ART
It is known to dispose absorbent pads in bags, either in a tray disposed in a bag or with no trays whereby juices that are released by food products, such as meat and poultry, can be absorbed to provide a display package which is more pleasing to the human eye. For example, U.S. Patent 3,026,209 describes such a method of packaging such products to maintain the products looking fresh, clean and wholesome even though considerable meat exudate is present in the package.
Such packaging also may contain a bacterial static agent within the absorbent material to retard the growth of microorganisms. Another example of such product is also described in U.S. Patent 4,275,811 and U.S. Patent 5,176,930.
It is further known from U.S. Patent 4,275,811, referred to hereinabove, to provide an absorbent pad having a liquid absorbent mat sandwiched between a liquid impermeable upper sheet which lies against the food product and a back sheet of hydrophobic material.
This pad is disposed in the bag against between one of the walls of the bag and the food product, such as poultry. U.S. Patent 3,156,402, which issued in 1964, 211699~
also discloses the use of a liquid absorbing pad which is made of impervious film which is perforated to admit juices exuded by the food product. It is also known in the prior art to secure such absorbent pads to an inside wall of the bag as also disclosed in U.S. Patent 4,275,811 or to a tray, as disclosed in U.S. Patent 4,860,887.
The present invention is concerned with the provision of an absorbent pad disposed inside a bag and against a rear side wall of a bag in a lowermost section of the bag, and wherein the pad is prevented from being dislocated or folded during insertion of the food product in the bag and when the food product is removed from the bag. Because such products are usually refrigerated and sometimes sold frozen, often ice will form between the top surface of the pad and the food product, and although the top surface of the pad has a release coating, or is formed of release material, it often still adheres to the foodstuff and the pad may be ripped from the bag when the product is pulled out. When inserting the food product in the bag, it may engage the leading edge or the pad and disturb the position of the pad or may disconnect it with the bag causing holes to be formed in the bag, thereby providing a bag which is rendered non-functional by causing leakage.
SUMMARY OF INVENTION
It is a feature of the present invention to provide a bag adapted for packaging food products that exude juices, such as meat and poultry, and which bag has an absorbent pad and which substantially overcomes the above-mentioned disadvantages of the prior art.
According to a still further broad aspect of the present invention there is provided a bag adapted for packaging food products that exude juices, such as meat and poultry, and wherein an absorbent pad is retained in a lower section of the bag by a bondable retention strip having a first fused line to bond it to a rear side wall of the bag and positioned forwardly of an uppermost edge of the pad, and a second fused line extending across and bonded to a top impervious surface layer of the pad and the rear side wall of the bag on each side of the pad.
According to a still further feature of the present invention there is provided a bag adapted for packaging food products that exude juices, such as meat and poultry, and wherein the bondable strip, as above described, extends at least over an upper third portion of the pad with a third fused line extending across the top impervious surface layer of the pad and the rear side wall of the bag on opposed sides of the pad.
According to a still further feature of the present invention there is provided a bag adapted for packaging food products that exude juices, such as meat and poultry, and wherein there is provided a second retention strip of bondable material fused transversely across the top impervious surface layer of the pad and the rear side wall of the bag and spaced substantially mid-length of the pad.
According to a further feature of the invention the bondable strip may be an adhesive tape of clear film or other material.
According to a broad aspect of the present invention, there is provided a bag for packaging liquid exuding food products that exude juices, such as meat and poultry. The bag is formed from an impervious plastic material and defines a front and rear side wall, closed bottom end and an opposed end. An absorbent pad having an absorbent material is sandwiched between a top impervious surface layer formed of a material capable of being heat-fused, and a back surface layer formed of a pervious material. The absorbent pad has opposed parallel edges. The pad is retained in the bag against a lower section of the bag with the back surface of the pad disposed against the rear side wall of the bag by a bondable retention film strip extending transversely across the rear side wall and an uppermost one of the parallel edges of the pad. The retention strip is bonded to the rear side wall and overlaps the uppermost one of the parallel edges and extend longitudinally across the top impervious surface layer of the pad and the rear side wall of the bag on opposed sides of the pad. The retention strip is bonded by heat-fusing a first fused line disposed longitudinally along a leading edge of the retention strip and a rear side wall and forwardly of the uppermost one of the parallel edges. A
second fused line extends longitudinally across the strip and space rearwardly o~ the leading edge and extends over the top impervious surface layer of the pad and a rear side wall of the bag on opposed sides of the pad. A third fused line extends longitudinally across the strip adjacent a trailing edge of the strip and over the top impervious surface layer of the pad and the rear side wall of the bag on opposed side of the pad. The retention strip prevents the pad from being pulled closed to the open end of the bag by the withdrawal of the food products from the bag.
:~, - 5 - ~ r7 BRIEF DESCRIPTION OF DRAwINGS
A preferred embodiment of the present invention will now be described with reference to the accompanying drawings, in which:
FIG. 1 is a plan view showing a bag constructed in accordance with the present invention specifically for the packaging of food products that exude juices, such as meat and poultry;
FIG. 2 is a cross-section view along section lines II-II of Fig. 1 illustrating the manner in which the retention strip is fused to the bag rear wall and the impervious surface layer of the pad, also illustrating a further modification of the retention strip in phantom lines;
FIG. 3 is a simplified sectional side view showing poultry being positioned or withdrawn from the plastic bag incorporating therein the pad secured in accordance with the present invention;
FIG. 4 is a plan view showing a further modification of the retention strip;
FIG. 5 is a further plan view showing a further modification wherein two retention strips are provided to retain the pad against the rear side wall of the bag; and FIG. 6 is a still further plan view showing another modification wherein the top retention strip also provides a sealed compartment for receiving a flat article therein.
DESCRIPTION OF PREFERRED EMBODIMENTS
Referring now to the drawings, and more particularly to Fig. 1, there is shown generally at 10 a bag constructed in accordance with the present invention and adapted for packaging food products that " p~
-exude juices, such as meat and poultry 11 as shown in Fig. 3. The bag is formed of plastic material, such as polyethylene, which is an impervious material to prevent leakage of liquids contained therein. The bag is substantially rectangular in shape and has a front side wall 12, a rear side wall 13, a closed or sealed bottom end 14, and an open top end 15. As herein shown, the rear side wall 13 extends beyond the open top end 15 and defines a flap 16 having a pair of holes 10 17 to retain the bag on wicker pins (not shown) but well known in the art for automatic loading of the bag.
Referring now additionally to Fig. 2, it can be seen that an absorbent pad 18, also of rectangular outline, defining a top straight leading edge 19, a 15 straight bottom edge 20 and opposed parallel side edges 21, is secured substantially central in a lower portion 22 of the bag 10 with its longitudinal axis extending substantially coextensive with the longitudinal axis of the bag. As seen in Fig. 2, the pad 18 has an 20 absorbent material 23 which is sandwiched between a top impervious surface layer 24, formed of a material capable of being heat-fused, and a back surface layer 25 formed of a pervious material, as is well known in the art.
The pad 18 is retained against the rear side wall 13 with the back pervious surface 25 of the pad disposed against the rear side wall 13 of the bag by means of a retention strip 26 which is also formed of fusible plastic material. The retention strip 26 may 30 also be an adhesive tape having an adhesive backing and preferably, but not exclusively, a clear plastic tape.
The strip 26 is disposed transversely across the rear side wall and the uppermost leading edge 19 of the pad.
A first fused line 27 is made by a fuse bar, or other 35 means well known in the art, spaced closely to the leading edge 28 of the retention strip 26 forwardly of the leading edge 19 of the pad 18 and across the rear _ ~ 7 ~ 2116~97 side wall 13. A second fused line 29 is formed longitudinally across the strip and spaced rearwardly of the leading edge 19 of the pad and extends over the top impervious surface layer 24 of the pad and the rear side wall 13 on opposed sides of the pad, as indicated at 29'. Accordingly, the leading edge 19 of the pad is protected by the first fused line 27 to prevent any foodstuff being placed in the bag from engaging the leading edge of the pad to cause the pad to fold over or to apply a pulling force on the fused lines which could make a tear in the bag. The second fused line 29 secures the pad in position to the rear wall by the first fused line 27 and the fused lines 29' on each side of the pad.
As shown in Fig. 3, when the food product, herein the poultry 11, is positioned within the open end 15 of the bag, it firstly contacts the retention strip 26 and accordingly slides over the absorbent pad 18, as herein shown.
Referring now to Fig. 4, there is shown a further modification of the retention strip 26. As herein shown, the retention strip is identified by reference numeral 26' and is a much wider strip which extends at least over an upper third portion of the pad 18. This retention strip 26' is provided with a third fused line 30 which extends longitudinally across the strip adjacent a trailing edge 31 of the strip 26' and over the top impervious surface layer 24 of the pad 18 and portions 30' of the rear side wall 13 on opposed sides of the pad 13. This wide retention strip 26' further prevents the pad 18 from being pulled close to the open end or in the direction of the open end 15 of the bag, as shown by arrow 34 in Fig. 3, when the poultry 11 is withdrawn from the bag 10, as illustrated by arrowhead 32 in Fig. 3. If the free end portion 33 of the pad 18 were to be stuck to the poultry 11, the third fused line 30 would resist the end portion 33 _~ - 8 from being pulled back and detach it from its attachment to the poultry by ice and prevent the free ~ end portion 33 to be pulled further from the bag as shown in Fig. 3. When using a wide strip 26' it is preferable that it is not an adhesive tape so that juices can flow behind the strip, as will now be described.
As shown in Fig. 4, the wide strip 26' is also preferably provided with a plurality of holes 35 to permit the passage of juices released by meat or poultry packaged in the bag so that such juices would be channeled for absorption by the back side of the pad under the wide retention strip 26'. Alternatively, the third fused line 30 may be made by spot welds rather than a straight weld across the top impervious surface layer 24 of the pad 18 and the rear side wall 13. In fact, all three fused lines could be made by spot fusing. As also shown in Fig. 4, the bottom edge 39 of the pad 18 is disposed aqainst the bottom end 14 of the bag where juices collect. This provides for better absorption of these juices by the pad, particularly when the bag is held in its upright position with the mouth opening facing upwardly.
Referring now to Fig. 5 there is shown a still further modification of the invention wherein a second retention strip 36, of fusible plastic material, is fused transversely across the top impervious surface layer 24 of the pad 18 by a fused line 37 which also extends over the rear side wall 13 of the bag on opposed sides of the pad, as indicated at 37'. The second strip 36 may also be an adhesive tape. This second retention strip prevents the pad from being pulled in the direction of the open end of the bag, as shown in Fig. 3, by the withdrawal of the food product, herein the poultry 11. Also, by providing two retention strips 26 and 36, the intermediate portion 38 of the pad between the strips is fully exposed to the food product to capture the juices released therefrom and the second retention strip 36 prevents the pad from being pulled in the direction of the open end when the foodstuff is removed.
Fig. 6 illustrates a still further modification of the first retention strip, herein identified by reference numeral 26". As herein shown, the retention strip is extended a predetermined distance above the uppermost leading edge 19 of the absorbent pad 18 to define in an uppermost portion a sealed compartment 45 in which can be positioned one or more flat objects, such as the pouch 46 which may contain a liquid dressing or powder to be used on the food product packaged in the bag. The article 46 could also be a coupon or any other article suitable for packaging in the sealed compartment 45. To seal the compartment 45 a further fused line 47 is formed adjacent the top edge 50 of the retention strip 26". The fused line 27 is also formed in front of the leading edge 19 of the absorbent pad.
In order to prevent movement of the flat article 46 positioned within the sealed compartment 45, a still further seal line 51 is formed across the strip 26" and the article 46.
As shown in Figs. 1, 4, 5 and 6, the bag is constructed of transparent plastic material and the top impervious surface 24 of the pad 18 is also formed of a plastic film material, such as polyethylene or a release-coated paper product, as is well known in the art. It is also pointed out that the construction of the pad is of a type well known in the art and does not form part of the present invention, other than to say that the top impervious surface of the pad should preferably be made from a film material of the retention strips 26, 26' and 36 are to be heat-fused thereto. Although the pad is shown as being of rectangular configuration, it could also be of a square - lo - ~116~97 ' . .
configuration, and the pad could also be positioned transversely into the bottom end of the bag rather than axially therein, as herein shown. The pad is also positioned with the lower straight edge 20 of the pad being positioned close to the bottom straight end 14 of the bag and substantially parallel thereto, whereby juices which collect at the bottom end of the bag can be readily absorbed by the pad. Furthermore, although the second retention strip 36 as herein shown is positioned below mid-length of the pad 18, it could be positioned at mid-length or at any suitable position, and even close to the lower edge 20 of the pad.
It is within the ambit of the present invention to cover any other obvious modifications of the preferred embodiment described herein, provided such modifications fall within the scope of the appended claims.
TECHNICAL FIELD
The present invention relates to a bag for packaging food products that exude juices, such as meat and poultry, and wherein an absorbent pad is secured inside the bag on a back side wall thereof by one or more retention strips of bondable material which are secured to the back wall forwardly of an uppermost edge of the pad and also secured to the pad to maintain it in position against the back side wall of the bag, particularly when the food products are removed from the bag.
BACKGROUND ART
It is known to dispose absorbent pads in bags, either in a tray disposed in a bag or with no trays whereby juices that are released by food products, such as meat and poultry, can be absorbed to provide a display package which is more pleasing to the human eye. For example, U.S. Patent 3,026,209 describes such a method of packaging such products to maintain the products looking fresh, clean and wholesome even though considerable meat exudate is present in the package.
Such packaging also may contain a bacterial static agent within the absorbent material to retard the growth of microorganisms. Another example of such product is also described in U.S. Patent 4,275,811 and U.S. Patent 5,176,930.
It is further known from U.S. Patent 4,275,811, referred to hereinabove, to provide an absorbent pad having a liquid absorbent mat sandwiched between a liquid impermeable upper sheet which lies against the food product and a back sheet of hydrophobic material.
This pad is disposed in the bag against between one of the walls of the bag and the food product, such as poultry. U.S. Patent 3,156,402, which issued in 1964, 211699~
also discloses the use of a liquid absorbing pad which is made of impervious film which is perforated to admit juices exuded by the food product. It is also known in the prior art to secure such absorbent pads to an inside wall of the bag as also disclosed in U.S. Patent 4,275,811 or to a tray, as disclosed in U.S. Patent 4,860,887.
The present invention is concerned with the provision of an absorbent pad disposed inside a bag and against a rear side wall of a bag in a lowermost section of the bag, and wherein the pad is prevented from being dislocated or folded during insertion of the food product in the bag and when the food product is removed from the bag. Because such products are usually refrigerated and sometimes sold frozen, often ice will form between the top surface of the pad and the food product, and although the top surface of the pad has a release coating, or is formed of release material, it often still adheres to the foodstuff and the pad may be ripped from the bag when the product is pulled out. When inserting the food product in the bag, it may engage the leading edge or the pad and disturb the position of the pad or may disconnect it with the bag causing holes to be formed in the bag, thereby providing a bag which is rendered non-functional by causing leakage.
SUMMARY OF INVENTION
It is a feature of the present invention to provide a bag adapted for packaging food products that exude juices, such as meat and poultry, and which bag has an absorbent pad and which substantially overcomes the above-mentioned disadvantages of the prior art.
According to a still further broad aspect of the present invention there is provided a bag adapted for packaging food products that exude juices, such as meat and poultry, and wherein an absorbent pad is retained in a lower section of the bag by a bondable retention strip having a first fused line to bond it to a rear side wall of the bag and positioned forwardly of an uppermost edge of the pad, and a second fused line extending across and bonded to a top impervious surface layer of the pad and the rear side wall of the bag on each side of the pad.
According to a still further feature of the present invention there is provided a bag adapted for packaging food products that exude juices, such as meat and poultry, and wherein the bondable strip, as above described, extends at least over an upper third portion of the pad with a third fused line extending across the top impervious surface layer of the pad and the rear side wall of the bag on opposed sides of the pad.
According to a still further feature of the present invention there is provided a bag adapted for packaging food products that exude juices, such as meat and poultry, and wherein there is provided a second retention strip of bondable material fused transversely across the top impervious surface layer of the pad and the rear side wall of the bag and spaced substantially mid-length of the pad.
According to a further feature of the invention the bondable strip may be an adhesive tape of clear film or other material.
According to a broad aspect of the present invention, there is provided a bag for packaging liquid exuding food products that exude juices, such as meat and poultry. The bag is formed from an impervious plastic material and defines a front and rear side wall, closed bottom end and an opposed end. An absorbent pad having an absorbent material is sandwiched between a top impervious surface layer formed of a material capable of being heat-fused, and a back surface layer formed of a pervious material. The absorbent pad has opposed parallel edges. The pad is retained in the bag against a lower section of the bag with the back surface of the pad disposed against the rear side wall of the bag by a bondable retention film strip extending transversely across the rear side wall and an uppermost one of the parallel edges of the pad. The retention strip is bonded to the rear side wall and overlaps the uppermost one of the parallel edges and extend longitudinally across the top impervious surface layer of the pad and the rear side wall of the bag on opposed sides of the pad. The retention strip is bonded by heat-fusing a first fused line disposed longitudinally along a leading edge of the retention strip and a rear side wall and forwardly of the uppermost one of the parallel edges. A
second fused line extends longitudinally across the strip and space rearwardly o~ the leading edge and extends over the top impervious surface layer of the pad and a rear side wall of the bag on opposed sides of the pad. A third fused line extends longitudinally across the strip adjacent a trailing edge of the strip and over the top impervious surface layer of the pad and the rear side wall of the bag on opposed side of the pad. The retention strip prevents the pad from being pulled closed to the open end of the bag by the withdrawal of the food products from the bag.
:~, - 5 - ~ r7 BRIEF DESCRIPTION OF DRAwINGS
A preferred embodiment of the present invention will now be described with reference to the accompanying drawings, in which:
FIG. 1 is a plan view showing a bag constructed in accordance with the present invention specifically for the packaging of food products that exude juices, such as meat and poultry;
FIG. 2 is a cross-section view along section lines II-II of Fig. 1 illustrating the manner in which the retention strip is fused to the bag rear wall and the impervious surface layer of the pad, also illustrating a further modification of the retention strip in phantom lines;
FIG. 3 is a simplified sectional side view showing poultry being positioned or withdrawn from the plastic bag incorporating therein the pad secured in accordance with the present invention;
FIG. 4 is a plan view showing a further modification of the retention strip;
FIG. 5 is a further plan view showing a further modification wherein two retention strips are provided to retain the pad against the rear side wall of the bag; and FIG. 6 is a still further plan view showing another modification wherein the top retention strip also provides a sealed compartment for receiving a flat article therein.
DESCRIPTION OF PREFERRED EMBODIMENTS
Referring now to the drawings, and more particularly to Fig. 1, there is shown generally at 10 a bag constructed in accordance with the present invention and adapted for packaging food products that " p~
-exude juices, such as meat and poultry 11 as shown in Fig. 3. The bag is formed of plastic material, such as polyethylene, which is an impervious material to prevent leakage of liquids contained therein. The bag is substantially rectangular in shape and has a front side wall 12, a rear side wall 13, a closed or sealed bottom end 14, and an open top end 15. As herein shown, the rear side wall 13 extends beyond the open top end 15 and defines a flap 16 having a pair of holes 10 17 to retain the bag on wicker pins (not shown) but well known in the art for automatic loading of the bag.
Referring now additionally to Fig. 2, it can be seen that an absorbent pad 18, also of rectangular outline, defining a top straight leading edge 19, a 15 straight bottom edge 20 and opposed parallel side edges 21, is secured substantially central in a lower portion 22 of the bag 10 with its longitudinal axis extending substantially coextensive with the longitudinal axis of the bag. As seen in Fig. 2, the pad 18 has an 20 absorbent material 23 which is sandwiched between a top impervious surface layer 24, formed of a material capable of being heat-fused, and a back surface layer 25 formed of a pervious material, as is well known in the art.
The pad 18 is retained against the rear side wall 13 with the back pervious surface 25 of the pad disposed against the rear side wall 13 of the bag by means of a retention strip 26 which is also formed of fusible plastic material. The retention strip 26 may 30 also be an adhesive tape having an adhesive backing and preferably, but not exclusively, a clear plastic tape.
The strip 26 is disposed transversely across the rear side wall and the uppermost leading edge 19 of the pad.
A first fused line 27 is made by a fuse bar, or other 35 means well known in the art, spaced closely to the leading edge 28 of the retention strip 26 forwardly of the leading edge 19 of the pad 18 and across the rear _ ~ 7 ~ 2116~97 side wall 13. A second fused line 29 is formed longitudinally across the strip and spaced rearwardly of the leading edge 19 of the pad and extends over the top impervious surface layer 24 of the pad and the rear side wall 13 on opposed sides of the pad, as indicated at 29'. Accordingly, the leading edge 19 of the pad is protected by the first fused line 27 to prevent any foodstuff being placed in the bag from engaging the leading edge of the pad to cause the pad to fold over or to apply a pulling force on the fused lines which could make a tear in the bag. The second fused line 29 secures the pad in position to the rear wall by the first fused line 27 and the fused lines 29' on each side of the pad.
As shown in Fig. 3, when the food product, herein the poultry 11, is positioned within the open end 15 of the bag, it firstly contacts the retention strip 26 and accordingly slides over the absorbent pad 18, as herein shown.
Referring now to Fig. 4, there is shown a further modification of the retention strip 26. As herein shown, the retention strip is identified by reference numeral 26' and is a much wider strip which extends at least over an upper third portion of the pad 18. This retention strip 26' is provided with a third fused line 30 which extends longitudinally across the strip adjacent a trailing edge 31 of the strip 26' and over the top impervious surface layer 24 of the pad 18 and portions 30' of the rear side wall 13 on opposed sides of the pad 13. This wide retention strip 26' further prevents the pad 18 from being pulled close to the open end or in the direction of the open end 15 of the bag, as shown by arrow 34 in Fig. 3, when the poultry 11 is withdrawn from the bag 10, as illustrated by arrowhead 32 in Fig. 3. If the free end portion 33 of the pad 18 were to be stuck to the poultry 11, the third fused line 30 would resist the end portion 33 _~ - 8 from being pulled back and detach it from its attachment to the poultry by ice and prevent the free ~ end portion 33 to be pulled further from the bag as shown in Fig. 3. When using a wide strip 26' it is preferable that it is not an adhesive tape so that juices can flow behind the strip, as will now be described.
As shown in Fig. 4, the wide strip 26' is also preferably provided with a plurality of holes 35 to permit the passage of juices released by meat or poultry packaged in the bag so that such juices would be channeled for absorption by the back side of the pad under the wide retention strip 26'. Alternatively, the third fused line 30 may be made by spot welds rather than a straight weld across the top impervious surface layer 24 of the pad 18 and the rear side wall 13. In fact, all three fused lines could be made by spot fusing. As also shown in Fig. 4, the bottom edge 39 of the pad 18 is disposed aqainst the bottom end 14 of the bag where juices collect. This provides for better absorption of these juices by the pad, particularly when the bag is held in its upright position with the mouth opening facing upwardly.
Referring now to Fig. 5 there is shown a still further modification of the invention wherein a second retention strip 36, of fusible plastic material, is fused transversely across the top impervious surface layer 24 of the pad 18 by a fused line 37 which also extends over the rear side wall 13 of the bag on opposed sides of the pad, as indicated at 37'. The second strip 36 may also be an adhesive tape. This second retention strip prevents the pad from being pulled in the direction of the open end of the bag, as shown in Fig. 3, by the withdrawal of the food product, herein the poultry 11. Also, by providing two retention strips 26 and 36, the intermediate portion 38 of the pad between the strips is fully exposed to the food product to capture the juices released therefrom and the second retention strip 36 prevents the pad from being pulled in the direction of the open end when the foodstuff is removed.
Fig. 6 illustrates a still further modification of the first retention strip, herein identified by reference numeral 26". As herein shown, the retention strip is extended a predetermined distance above the uppermost leading edge 19 of the absorbent pad 18 to define in an uppermost portion a sealed compartment 45 in which can be positioned one or more flat objects, such as the pouch 46 which may contain a liquid dressing or powder to be used on the food product packaged in the bag. The article 46 could also be a coupon or any other article suitable for packaging in the sealed compartment 45. To seal the compartment 45 a further fused line 47 is formed adjacent the top edge 50 of the retention strip 26". The fused line 27 is also formed in front of the leading edge 19 of the absorbent pad.
In order to prevent movement of the flat article 46 positioned within the sealed compartment 45, a still further seal line 51 is formed across the strip 26" and the article 46.
As shown in Figs. 1, 4, 5 and 6, the bag is constructed of transparent plastic material and the top impervious surface 24 of the pad 18 is also formed of a plastic film material, such as polyethylene or a release-coated paper product, as is well known in the art. It is also pointed out that the construction of the pad is of a type well known in the art and does not form part of the present invention, other than to say that the top impervious surface of the pad should preferably be made from a film material of the retention strips 26, 26' and 36 are to be heat-fused thereto. Although the pad is shown as being of rectangular configuration, it could also be of a square - lo - ~116~97 ' . .
configuration, and the pad could also be positioned transversely into the bottom end of the bag rather than axially therein, as herein shown. The pad is also positioned with the lower straight edge 20 of the pad being positioned close to the bottom straight end 14 of the bag and substantially parallel thereto, whereby juices which collect at the bottom end of the bag can be readily absorbed by the pad. Furthermore, although the second retention strip 36 as herein shown is positioned below mid-length of the pad 18, it could be positioned at mid-length or at any suitable position, and even close to the lower edge 20 of the pad.
It is within the ambit of the present invention to cover any other obvious modifications of the preferred embodiment described herein, provided such modifications fall within the scope of the appended claims.
Claims (13)
1. A bag adapted for packaging food products that exude juices, such as meat and poultry, said bag being formed from an impervious plastic material and defining a front and rear side wall, a closed bottom end and an opposed end; an absorbent pad having an absorbent material sandwiched between a top impervious surface layer formed of a material capable of being heat-fused, and a back surface layer formed of a pervious material; said absorbent pad having opposed parallel edges, said pad being retained in said bag against a lower section of said bag with said back surface of said pad disposed against said rear side wall of said bag by a bondable retention strip extending transversely across said rear side wall and an uppermost one of said parallel edges of said pad, said retention strip being bonded to said rear side wall and overlaps said uppermost one of said parallel edges and extends longitudinally across said top impervious surface layer of said pad and said rear side wall of said bag on opposed sides of said pad, said retention strip being bonded by heat-fusing a first fused line disposed longitudinally along a leading edge of said retention strip and said rear side wall and forwardly of said uppermost one of said parallel edges, and a second fused line extending longitudinally across said strip and spaced rearwardly of said leading edge and extending over said top impervious surface layer of said pad and said rear side wall of said bag on opposed sides of said pad, and a third fused line extending longitudinally across said strip adjacent a trailing edge of said strip and over said top impervious surface layer of said pad and said rear side wall of said bag on opposed sides of said pad, said retention strip preventing said pad from being pulled close to said open end of said bag by the withdrawal of said food products from said bag.
2. A bag as claimed in claim 1 wherein said fused line is a bar weld line.
3. A bag as claimed in claim 1 wherein said fused line is a line of spot welds.
4. A bag as claimed in claim 1 wherein said retention strip is provided with a plurality of holes to permit the passage of juices released by meat or poultry packaged in said bag.
5. A bag as claimed in claim 1 wherein there is further provided a second retention strip of fusible plastic material fused transversely across said top impervious surface layer of said pad and said rear side wall of said bag on opposed sides of said pad and spaced from said retention strip to prevent said pad from being pulled in the direction of said open end of said bag by the withdrawal of said food products from said bag.
6. A bag as claimed in claim 5 wherein said retention strip and second retention strip are adhesive tapes.
7. A bag as claimed in claim 1 wherein said impervious plastic material is a transparent plastic material.
8. A bag as claimed in claim 1 wherein said top impervious surface of said pad is a plastic film material, such as polyethylene or a release coated paper product.
9. A bag as claimed in claim 1 wherein said absorbent pad is a rectangular pad, said bag front and rear side walls being rectangular in shape, said pad being narrower than said side walls and disposed substantially central over said rear side wall with a longitudinal axis of said pad disposed lengthwise of said bag, said pad having a lower straight edge positioned on said closed bottom end of said bag.
10. A bag as claimed in claim 1 wherein said rear side wall of said bag is provided with an extension flap extending beyond said bag open end.
11. A bag as claimed in claim 5 wherein said second retention strip is positioned at least mid-length of said absorbent pad or further away from said second fused line of said retention strip.
12. A bag as claimed in claim 6 wherein said adhesive tape is made of clear plastic material.
13. A bag as claimed in claim 1 wherein said retention strip extends a predetermined distance above said pad, a third fused line adjacent said uppermost one of said parallel edges, an article retaining compartment defined between said first fused line and third fused line for retention in a substantially sealed manner to retain a flat article therebetween, and a fourth sealed line extending across said retention strip over said article and to opposed sides thereof to immobilize said flat article in said compartment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002116997A CA2116997C (en) | 1994-03-04 | 1994-03-04 | Bag structure and pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002116997A CA2116997C (en) | 1994-03-04 | 1994-03-04 | Bag structure and pad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2116997A1 CA2116997A1 (en) | 1995-09-05 |
| CA2116997C true CA2116997C (en) | 1999-01-12 |
Family
ID=4153021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002116997A Expired - Fee Related CA2116997C (en) | 1994-03-04 | 1994-03-04 | Bag structure and pad |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2116997C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120187117A1 (en) * | 2009-07-11 | 2012-07-26 | Thinxxs Microtechnology Ag | Fluid reservoir |
-
1994
- 1994-03-04 CA CA002116997A patent/CA2116997C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120187117A1 (en) * | 2009-07-11 | 2012-07-26 | Thinxxs Microtechnology Ag | Fluid reservoir |
| US8783488B2 (en) * | 2009-07-11 | 2014-07-22 | Thinxxs Microtechnology Ag | Fluid reservoir |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2116997A1 (en) | 1995-09-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |