CA1036548A - Paper box for wrapping refrigerated meat - Google Patents
Paper box for wrapping refrigerated meatInfo
- Publication number
- CA1036548A CA1036548A CA222,686A CA222686A CA1036548A CA 1036548 A CA1036548 A CA 1036548A CA 222686 A CA222686 A CA 222686A CA 1036548 A CA1036548 A CA 1036548A
- Authority
- CA
- Canada
- Prior art keywords
- paper
- box
- rugose
- paper board
- patterns
- 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
Links
Landscapes
- Paper (AREA)
- Cartons (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
Abstract
Title of the Invention:
A PAPER BOX FOR WRAPPING REFRIGERATED MEAT
Abstract of the Disclosure:
A paper box is provided for wrapping refrigerated meats, which is characterized by a paper board for prevention of strength loss due to moisture pick-up during usage, and also for prevention of drying for good preservation and for easy separation of the meat from the box.
A PAPER BOX FOR WRAPPING REFRIGERATED MEAT
Abstract of the Disclosure:
A paper box is provided for wrapping refrigerated meats, which is characterized by a paper board for prevention of strength loss due to moisture pick-up during usage, and also for prevention of drying for good preservation and for easy separation of the meat from the box.
Description
~Lfl~3~54f~f This invention relates to a paper box, and more particularly to a paper box which can be used for wrapping of refrigeratefl meats, and which is adapted to preferably exhaust air and moisture discharged from s~id wrapped Meats, particularly fish, animal or chioken meat~ during -the period in which reffrigerated meat is contained therein for preserva-tion and -transpor-tation.
1, Heretofore, in situations where meat has been wrappped in a paper box and lhen reErigerated, many problerns have been noted, for fafxample, the alr and moisture mormally discharged frorn the meat when the f content3 of thfef papcr box are comprefs_ffecl on wr~ppin6 or packinf3 are not sufficienftfly efxhafusfJf2fc1 from lfhf2f box.
onffequently, thfaf surface of the rneat takes on a rough, irregular or cra-tered shape and ice tends to form and be entrapped in the meat. rrhis seriously reducfafs -the ! edibility and the value of the meat. Moreover, moisture I tends to be frozen between the inner surface of -the box and the meat surface so -that it becomes difficult to remove from the box. Also since the box is insufficiently wa-ter proofed, the box tends to become wet and this reduces ~¦~ the strength of the box.
A box has recently been proposed which has fine raised patterns embossed randomly on -the inner surface ~ of the box. Since the embossed raised patterns however~
!¦
1 ' ' ` ` ~
: ~ _ 2 - ; ;
': ~1 , ,:. ., . , , ~ , . . . . . . .
.. . , . ~ ~ - , , ' ' ' . ' " . . . .
~36S~8 are mutually independent, air and moisture tends to accumulate within the recesses of the box since it cannot be sufficiently exhausted out of the box.
The present invention provides a paper box for wrapping .
refrigerated meat which will not be subject to reduced strength due to moisture retention.
The present invention also provides a paper box which can be used for wrapping refrigerated meats, which box will function to dispel accumulated air and moisture as formed therein.
The present inventionfurther provides a paper box for wrapping refrigerated meat which will prevent the contents from such drying as to induce spoilage and which will facilitate separation of the contents from the box after refri~eration.
According to the present :invention there is provided a paper b0x for wrapping refrigerated me~t comprisin~ single or multl-ply paper board having a th~c~ness of 20/100 - 80/100 mm, a degree of sizing of 900 - 4,200 seconds, Cobb water absorption degree of less than 32 g/m2, which is embossed with rugose patterns having a length of 1 - 8 mm with a depth or 40 - 130% of the thickness of the paper, at an angle of 10 - 45 with respect to the surface of the paper board, at intervals of 0.5 - 8 mm and at a density of 2 - 11/cm2, and having a water resistance of 80-260 g/m at the rugose surface, an air permeability of 200-2500 sec./lOOcc and a Mullen bursting strength after embossing of 3.5 - 14 kg/cm2 and having fine cracking in the water resisting coating atthe.rugose surface. .
Thus in accordance with the present invention, the ..
the degree of si~ing of the paper of the box should be between . 900 - 4,200 seconds and the Cobb water absorption degree thereof 3a should be below 32 g/m . The box of the present invention has better water resistance and waterproofing properties for meat wrapping purposes than normal paper board slnce it enables water ~ ~
` :
s~
to be discharged from the meat during refrigeration and subsequent melting. The Cobb water absorption degree is. preferably 1~ .''. .
, . .
- 3~
~e~36s~
below 25 g/m2. The a-~orementioned sizing degree is obtained from test measurements according to JIS P-8122, and the oobb vrater absorption degree is obtained from te~t mea3uremen-t~ according -to JIS P-8140. The thickness of the paper should bc 20/100 - ~0/100 mm in order to maintain the burstin,~ strength ~ithin the range o~ 3.5 -14 Kg/cm2 after embossing. 'rhe upper range is limited only by economic nece3sities and the lov~cr rantge i9 determined by the pre-dsterm:incd noces~ar,y stron,~th.
'rhe de~ree of ~izing o:~ the paper box m~,-terlal i~ thu~
greater than normal papor board, ~inoe the strell~th o~
~, the paper box mu~t be ~uch to prevont abrup-t deter:Loration when bhe box beoome~ moi~tenod dur:ln~ u~ag0. 'rhe bur~tin~
~trength o~ the paper box is thus ~elected as indicated above ~o that when the box and contents are under the str0ss of packing, di~erential oracXing will appear in the waterproof coating. 'rhat is, wllen the waterproo~ed coating paper is under stress it will be so altered that a large di~ferential in air permeability will occur as between the uneven or embossed portions and the normal areas. Thi~ result in the accumulated air and moisture being gradually,displaced through the paper plgs and out o~ the box. Such cracking at the embossed portion~ is very ~ine and may be either visible or invisible. Cracks may also be ~ormed when ~he ru~ose portions are ambos~ed .~ ' ~ . .
'.
65~8 since when the paper is tension~d some paper ~ibers will be broken. These will occur however, mainly in the waterproo~ coating when the paper box contents are under stress.
A~ discu~sed abo~e, the bursting ~tr~ngth o~ the paper box must be maintained within 3.5 - 14 Kg/cm2 after e~bossing in terms o~ M~llen bursting strength as defined by JIS P-8131, pre~erably 3.5 - 12.5 ~g/cm2.
I~ the bur~tlng strength o~ the paper box is ~reater than 14 Kg,/om2, it become~ .impo~sible ~or the air and moi~ture to b~ di~oharged ~rom the box with ~he ro~ulb th~b re~rlgoratlon w~ll p~oduoo l¢e throul~hout tho me~t in the paper box. ~lhis re~ult0 :Ln ~re~tly reducing the oommeroial value o~ the packed artiole. The cobb water ab~orption degree o~ ~he paper box is indioated a~ being below 32 g/m2, so that the moisture may gradually di~per~e or be absorbed into the paper of the box.
The paper box o~ the present invention has another ~eature in that the rugose patterns are smbossed randomly so that reces~sd grooves for communication between the rugose patterns are ~ormed in order to facilitate discharge o~ the air and water produced whsn the meat is wrapped in the paper box.
The box of the present invention i~ shown in ~igure 1, in whioh the ~old lines and the partiallg ~olded .
;' . , ,.' ' ''. , , . '.: . . ' . ., .' . ,''': : ' , - 1~36~4~3 ~
structure can be se~n. Figure 2 is a fragmentary prospective view ~howing the ~ugose sur~aces o~ the box.
'~he shape of the ru~ose patterns embos~ed on the paper of the box of the presen~ invention 1~ not critical.
Preferably, they are semi-elliptic or spherical rece~ses ~ormed in such a manner that the length of one side is 1 - ~ mm, the intervals between the recesses are 0.5 - `;
8 mm, the den~ity of ~he recesses is 2 - 11/cm2, the angle o~ the reoe~s with respect to the sur~aoe o~ the paper board o~ the box i~ 10 - 45, its depth is ~0 -130% of tho thiokn~s~ o~ the paper, pre~erably 70 - 110 and the reoe~e~ are 50 arr~n~od a~ bo be in a zl~-za~
form ~uoh that ~he reoee~ed side will be on the in~ide of the box. I~ the depth o~ the recesses are less than 40% of the bhioknes~ of the paper, the recesses will not funotion to permit su~ioient discharge of the air and moisture from the paper box. If they are over 130%, the paper board of the box will be so penetrated by the recessee as to lose the intended function of the recesses, beoause if there are ~ine penetrated holes throughout the paper board o~ the box, which are caused by excessi~e recessing7 the moisture initiallg dischar~ed ~rom the content in the paper box i~ frozen therein which will prevent di~oharge of subsequently ~ormed air and moi~ture.
., . ., .... , . ~ . .. . . . .
: . . ., ,' .; ; ".' :. ,, '; ` ' . . . ' , ~36S~
Further, if the angle of the recesses with re~pect to the surface of the paper board of the box i~ les~
than 10, the recesses cannot function properlg to form the desired cra¢~ing in -the wa-terproof coating o~ the rugose pattern~ o~ the paper board o~ the box when under the tension pre~ent during the wrapping of the meat.
There would thus be lacking the fine cracking necessary to permit air and water discharge as described abo~e.
On the o~her hand, if the acute angle thereof i5 over ~5~, the paper board of the box will be broken when emboo~ed so a~ not to po~sess the neces~arg ~bren~th ln th0 ~orm o~ a paper box.
I~ the inter~al~ betwe~n Ghe reoe~00~ are over 8 mm or the densit~ o~ the rece~es i3 le~3 than 2/om2, the dl~tribubion o~ the water proo~ coating of the ~ugo~e por~ions o~ the paper box beoomes exoe~sively une~en 90 that the air and moi~ture cannot be sufficiently disoharged from the paper box~ This re~ults in the formation of ~oaming and stripe scarring on the surface of the contents.
I On the other hand, if the intervals between the recesses are le~s than 0.5 mm, or the den~ity thereof i~ over ll/cm29 the strength of the paper box will be so weakened that compre~sion o~ the contents in -the paper box on wrapping ¦ becomes difficult. In addition, if the length o~ one side o~ the rece~es is less than 1 mm, it is di~icult to , : .
. .., . .: .
,':, , ' ~ . . . ". , ~ : ~
- , . ..
1~3~
obtain recesses having the aforementioned necessary depth omitted :~
if the length thereof is over 8 mm, the cracks formed per recess is far below what is requiredO
The paper box o~ the present invention has still another feature namely that recessed grooves of 3/100 - 65/100 mm in depth are formed linearly or nonlinearly for connecting the rugose patterns with each other as well as the portions correspond-ing to the upper four peripheral edges of the paper box in order to evenly and efficiently discharge from the box the air and moisture produced when meat is packed and compressed therein.
In view of the moisture produced upon refrigerating and thawing of the meat and the force applied to the paper box upon removal of the meat from the paper box for usage, the : .
water resistance of the paper board of the box after embossincJ
is deined as 80 to 260 g/m2 of the recessed surface ancl the j .;.
air permeability thereo~ is de.Eined as 200 to 2500 sec./lOOcc.
The above cited water resistance values are obta.ined from .
a measurement which comprises pouring water at 20C. into a ring, removing the water after 24 hours, removing the adhered water ... :
with a filter to measure the absorbed water, employing a moisture permeability cup described in JIS Z-0208, ~ `
'''"''''. ~ ';
~ '"
~ 3 - .
~0365~8 ne above air permeability values are obtained from the measurement test described in JIS P-8117. If the water resistance is less than 80 g/m2 at the recess surface, the moisture in the paper box cannot be sufficiently discharged from the paper box so that the paper box contents are subject to deterioration, while if the water resistance is above 260 g/m2 at the recess surface, an excessive amount of moisture is absorbed in the paper box weakening it excessively. If the air permeability is less than 200 sec./lOOcc, the air in the paper box is excessively exhausted so that proper preservation and stability of the contents cannot be maintained, whereas if the air permeability is above 2500 sec./lOOcc, the air in the paper box is not sufficiently discharged with the result that the quality of the contents is unacceptably lowered. Thus, the air permeability of the paper board of the box is within 200 -
1, Heretofore, in situations where meat has been wrappped in a paper box and lhen reErigerated, many problerns have been noted, for fafxample, the alr and moisture mormally discharged frorn the meat when the f content3 of thfef papcr box are comprefs_ffecl on wr~ppin6 or packinf3 are not sufficienftfly efxhafusfJf2fc1 from lfhf2f box.
onffequently, thfaf surface of the rneat takes on a rough, irregular or cra-tered shape and ice tends to form and be entrapped in the meat. rrhis seriously reducfafs -the ! edibility and the value of the meat. Moreover, moisture I tends to be frozen between the inner surface of -the box and the meat surface so -that it becomes difficult to remove from the box. Also since the box is insufficiently wa-ter proofed, the box tends to become wet and this reduces ~¦~ the strength of the box.
A box has recently been proposed which has fine raised patterns embossed randomly on -the inner surface ~ of the box. Since the embossed raised patterns however~
!¦
1 ' ' ` ` ~
: ~ _ 2 - ; ;
': ~1 , ,:. ., . , , ~ , . . . . . . .
.. . , . ~ ~ - , , ' ' ' . ' " . . . .
~36S~8 are mutually independent, air and moisture tends to accumulate within the recesses of the box since it cannot be sufficiently exhausted out of the box.
The present invention provides a paper box for wrapping .
refrigerated meat which will not be subject to reduced strength due to moisture retention.
The present invention also provides a paper box which can be used for wrapping refrigerated meats, which box will function to dispel accumulated air and moisture as formed therein.
The present inventionfurther provides a paper box for wrapping refrigerated meat which will prevent the contents from such drying as to induce spoilage and which will facilitate separation of the contents from the box after refri~eration.
According to the present :invention there is provided a paper b0x for wrapping refrigerated me~t comprisin~ single or multl-ply paper board having a th~c~ness of 20/100 - 80/100 mm, a degree of sizing of 900 - 4,200 seconds, Cobb water absorption degree of less than 32 g/m2, which is embossed with rugose patterns having a length of 1 - 8 mm with a depth or 40 - 130% of the thickness of the paper, at an angle of 10 - 45 with respect to the surface of the paper board, at intervals of 0.5 - 8 mm and at a density of 2 - 11/cm2, and having a water resistance of 80-260 g/m at the rugose surface, an air permeability of 200-2500 sec./lOOcc and a Mullen bursting strength after embossing of 3.5 - 14 kg/cm2 and having fine cracking in the water resisting coating atthe.rugose surface. .
Thus in accordance with the present invention, the ..
the degree of si~ing of the paper of the box should be between . 900 - 4,200 seconds and the Cobb water absorption degree thereof 3a should be below 32 g/m . The box of the present invention has better water resistance and waterproofing properties for meat wrapping purposes than normal paper board slnce it enables water ~ ~
` :
s~
to be discharged from the meat during refrigeration and subsequent melting. The Cobb water absorption degree is. preferably 1~ .''. .
, . .
- 3~
~e~36s~
below 25 g/m2. The a-~orementioned sizing degree is obtained from test measurements according to JIS P-8122, and the oobb vrater absorption degree is obtained from te~t mea3uremen-t~ according -to JIS P-8140. The thickness of the paper should bc 20/100 - ~0/100 mm in order to maintain the burstin,~ strength ~ithin the range o~ 3.5 -14 Kg/cm2 after embossing. 'rhe upper range is limited only by economic nece3sities and the lov~cr rantge i9 determined by the pre-dsterm:incd noces~ar,y stron,~th.
'rhe de~ree of ~izing o:~ the paper box m~,-terlal i~ thu~
greater than normal papor board, ~inoe the strell~th o~
~, the paper box mu~t be ~uch to prevont abrup-t deter:Loration when bhe box beoome~ moi~tenod dur:ln~ u~ag0. 'rhe bur~tin~
~trength o~ the paper box is thus ~elected as indicated above ~o that when the box and contents are under the str0ss of packing, di~erential oracXing will appear in the waterproof coating. 'rhat is, wllen the waterproo~ed coating paper is under stress it will be so altered that a large di~ferential in air permeability will occur as between the uneven or embossed portions and the normal areas. Thi~ result in the accumulated air and moisture being gradually,displaced through the paper plgs and out o~ the box. Such cracking at the embossed portion~ is very ~ine and may be either visible or invisible. Cracks may also be ~ormed when ~he ru~ose portions are ambos~ed .~ ' ~ . .
'.
65~8 since when the paper is tension~d some paper ~ibers will be broken. These will occur however, mainly in the waterproo~ coating when the paper box contents are under stress.
A~ discu~sed abo~e, the bursting ~tr~ngth o~ the paper box must be maintained within 3.5 - 14 Kg/cm2 after e~bossing in terms o~ M~llen bursting strength as defined by JIS P-8131, pre~erably 3.5 - 12.5 ~g/cm2.
I~ the bur~tlng strength o~ the paper box is ~reater than 14 Kg,/om2, it become~ .impo~sible ~or the air and moi~ture to b~ di~oharged ~rom the box with ~he ro~ulb th~b re~rlgoratlon w~ll p~oduoo l¢e throul~hout tho me~t in the paper box. ~lhis re~ult0 :Ln ~re~tly reducing the oommeroial value o~ the packed artiole. The cobb water ab~orption degree o~ ~he paper box is indioated a~ being below 32 g/m2, so that the moisture may gradually di~per~e or be absorbed into the paper of the box.
The paper box o~ the present invention has another ~eature in that the rugose patterns are smbossed randomly so that reces~sd grooves for communication between the rugose patterns are ~ormed in order to facilitate discharge o~ the air and water produced whsn the meat is wrapped in the paper box.
The box of the present invention i~ shown in ~igure 1, in whioh the ~old lines and the partiallg ~olded .
;' . , ,.' ' ''. , , . '.: . . ' . ., .' . ,''': : ' , - 1~36~4~3 ~
structure can be se~n. Figure 2 is a fragmentary prospective view ~howing the ~ugose sur~aces o~ the box.
'~he shape of the ru~ose patterns embos~ed on the paper of the box of the presen~ invention 1~ not critical.
Preferably, they are semi-elliptic or spherical rece~ses ~ormed in such a manner that the length of one side is 1 - ~ mm, the intervals between the recesses are 0.5 - `;
8 mm, the den~ity of ~he recesses is 2 - 11/cm2, the angle o~ the reoe~s with respect to the sur~aoe o~ the paper board o~ the box i~ 10 - 45, its depth is ~0 -130% of tho thiokn~s~ o~ the paper, pre~erably 70 - 110 and the reoe~e~ are 50 arr~n~od a~ bo be in a zl~-za~
form ~uoh that ~he reoee~ed side will be on the in~ide of the box. I~ the depth o~ the recesses are less than 40% of the bhioknes~ of the paper, the recesses will not funotion to permit su~ioient discharge of the air and moisture from the paper box. If they are over 130%, the paper board of the box will be so penetrated by the recessee as to lose the intended function of the recesses, beoause if there are ~ine penetrated holes throughout the paper board o~ the box, which are caused by excessi~e recessing7 the moisture initiallg dischar~ed ~rom the content in the paper box i~ frozen therein which will prevent di~oharge of subsequently ~ormed air and moi~ture.
., . ., .... , . ~ . .. . . . .
: . . ., ,' .; ; ".' :. ,, '; ` ' . . . ' , ~36S~
Further, if the angle of the recesses with re~pect to the surface of the paper board of the box i~ les~
than 10, the recesses cannot function properlg to form the desired cra¢~ing in -the wa-terproof coating o~ the rugose pattern~ o~ the paper board o~ the box when under the tension pre~ent during the wrapping of the meat.
There would thus be lacking the fine cracking necessary to permit air and water discharge as described abo~e.
On the o~her hand, if the acute angle thereof i5 over ~5~, the paper board of the box will be broken when emboo~ed so a~ not to po~sess the neces~arg ~bren~th ln th0 ~orm o~ a paper box.
I~ the inter~al~ betwe~n Ghe reoe~00~ are over 8 mm or the densit~ o~ the rece~es i3 le~3 than 2/om2, the dl~tribubion o~ the water proo~ coating of the ~ugo~e por~ions o~ the paper box beoomes exoe~sively une~en 90 that the air and moi~ture cannot be sufficiently disoharged from the paper box~ This re~ults in the formation of ~oaming and stripe scarring on the surface of the contents.
I On the other hand, if the intervals between the recesses are le~s than 0.5 mm, or the den~ity thereof i~ over ll/cm29 the strength of the paper box will be so weakened that compre~sion o~ the contents in -the paper box on wrapping ¦ becomes difficult. In addition, if the length o~ one side o~ the rece~es is less than 1 mm, it is di~icult to , : .
. .., . .: .
,':, , ' ~ . . . ". , ~ : ~
- , . ..
1~3~
obtain recesses having the aforementioned necessary depth omitted :~
if the length thereof is over 8 mm, the cracks formed per recess is far below what is requiredO
The paper box o~ the present invention has still another feature namely that recessed grooves of 3/100 - 65/100 mm in depth are formed linearly or nonlinearly for connecting the rugose patterns with each other as well as the portions correspond-ing to the upper four peripheral edges of the paper box in order to evenly and efficiently discharge from the box the air and moisture produced when meat is packed and compressed therein.
In view of the moisture produced upon refrigerating and thawing of the meat and the force applied to the paper box upon removal of the meat from the paper box for usage, the : .
water resistance of the paper board of the box after embossincJ
is deined as 80 to 260 g/m2 of the recessed surface ancl the j .;.
air permeability thereo~ is de.Eined as 200 to 2500 sec./lOOcc.
The above cited water resistance values are obta.ined from .
a measurement which comprises pouring water at 20C. into a ring, removing the water after 24 hours, removing the adhered water ... :
with a filter to measure the absorbed water, employing a moisture permeability cup described in JIS Z-0208, ~ `
'''"''''. ~ ';
~ '"
~ 3 - .
~0365~8 ne above air permeability values are obtained from the measurement test described in JIS P-8117. If the water resistance is less than 80 g/m2 at the recess surface, the moisture in the paper box cannot be sufficiently discharged from the paper box so that the paper box contents are subject to deterioration, while if the water resistance is above 260 g/m2 at the recess surface, an excessive amount of moisture is absorbed in the paper box weakening it excessively. If the air permeability is less than 200 sec./lOOcc, the air in the paper box is excessively exhausted so that proper preservation and stability of the contents cannot be maintained, whereas if the air permeability is above 2500 sec./lOOcc, the air in the paper box is not sufficiently discharged with the result that the quality of the contents is unacceptably lowered. Thus, the air permeability of the paper board of the box is within 200 -
2,500 sec./lOOcc. .
If the paper box is completely dehydrAked, fine spacestend to appear between the contents and the paper box with the result that the air in the spaces shift about, thus proper preservation of the box contents cannot be maintained. However, the :
paper box of the present invention is slightly absorbent of the moisture ~ .
, . : . - .
~36S4i,~
so aFZ to enable close contact between the contentc~ and the paper box whereby the air in the flat portion is exhau,e~ted thereby preventing the box content~ from drylng, thuZs maintaining proper preservation. Fur~her, bhe earZy separation o~ the contenti$Z ~rom the paper box ieZ Pacilitated.
AZ~Z indicated in the ~oregoing deiscription, the paper box of the present invention ¢an maintain the rZtrength of the box alaaineZ-b expo,sure to moisture during usa,~e~
oan ,graduallg dl,~oharge the alr and mol~bureZ ~rom ~he papex box ~or proper pre3ervabion o~ 'uheZ oon-bont,o and aloo oan pre,vent bho oontZeZnb in thZZ3 box ~rom drylng~
thereby maintainin~ proper oontent pre~ervation and oan I facilltate easy removal o~ the oontents from the paper ¦ box under conditions o~ use as de,-oribed above. There ¦ ,eZ thus provided an artio~e o~ great commerioal and ~ndule~trial value.
The following Example iS given by way o~ an illustration only.
E~
I Both siderZ of a multi-ply paper board having a I thioknesrZ o~ 50/100 mm,a siizing degree of 2,200 seoond,~,, a oobb water absorption degree o~ 23 g/m2 were ooated for imparting waterproo~ing proper-,~iee~ a,s desZorib~d ~; abo~o~ and the~n r~emi-elliptio ispherioal reoes~ZeZl~ having , .
. -- 10 --.
.i .
~36S4~
a density of 4/cm2 of a side length of 2.5 - 4.5 mm at intervals of 2 mm with 90% of the depth with respect to the thickness embossed in a zig-zag form at an angle of 20~ with respect to the surface of the paper board. Fish was packed in the paper box having 1,200 sec/lOOcc of air permeability, 150 g/m2 of water resistance at the recess surface and lO.S Kg/cm bursting strength, and thereafter compressed for 3.5 hours at 40 Kg/cm2 of pressure during refrigeration.
The contained fish was thus maintained indefinitely in a proper state of preservation for shipping and storage.
The contents of the paper box were easily removed from the box for sale and use as food.
-- 1.1. -, . . , .~ -: , ;.
If the paper box is completely dehydrAked, fine spacestend to appear between the contents and the paper box with the result that the air in the spaces shift about, thus proper preservation of the box contents cannot be maintained. However, the :
paper box of the present invention is slightly absorbent of the moisture ~ .
, . : . - .
~36S4i,~
so aFZ to enable close contact between the contentc~ and the paper box whereby the air in the flat portion is exhau,e~ted thereby preventing the box content~ from drylng, thuZs maintaining proper preservation. Fur~her, bhe earZy separation o~ the contenti$Z ~rom the paper box ieZ Pacilitated.
AZ~Z indicated in the ~oregoing deiscription, the paper box of the present invention ¢an maintain the rZtrength of the box alaaineZ-b expo,sure to moisture during usa,~e~
oan ,graduallg dl,~oharge the alr and mol~bureZ ~rom ~he papex box ~or proper pre3ervabion o~ 'uheZ oon-bont,o and aloo oan pre,vent bho oontZeZnb in thZZ3 box ~rom drylng~
thereby maintainin~ proper oontent pre~ervation and oan I facilltate easy removal o~ the oontents from the paper ¦ box under conditions o~ use as de,-oribed above. There ¦ ,eZ thus provided an artio~e o~ great commerioal and ~ndule~trial value.
The following Example iS given by way o~ an illustration only.
E~
I Both siderZ of a multi-ply paper board having a I thioknesrZ o~ 50/100 mm,a siizing degree of 2,200 seoond,~,, a oobb water absorption degree o~ 23 g/m2 were ooated for imparting waterproo~ing proper-,~iee~ a,s desZorib~d ~; abo~o~ and the~n r~emi-elliptio ispherioal reoes~ZeZl~ having , .
. -- 10 --.
.i .
~36S4~
a density of 4/cm2 of a side length of 2.5 - 4.5 mm at intervals of 2 mm with 90% of the depth with respect to the thickness embossed in a zig-zag form at an angle of 20~ with respect to the surface of the paper board. Fish was packed in the paper box having 1,200 sec/lOOcc of air permeability, 150 g/m2 of water resistance at the recess surface and lO.S Kg/cm bursting strength, and thereafter compressed for 3.5 hours at 40 Kg/cm2 of pressure during refrigeration.
The contained fish was thus maintained indefinitely in a proper state of preservation for shipping and storage.
The contents of the paper box were easily removed from the box for sale and use as food.
-- 1.1. -, . . , .~ -: , ;.
Claims (9)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A paper box for wrapping refrigerated meat comprising single or multi-ply paper board having a thickness of 20/100 - 80/100 mm, a degree of sizing of 900 - 4,200 seconds, Cobb water absorption of degree less than 32 g/m2, which is embossed with rugose patterns having a length of 1 - 8 mm with a depth of 40 - 130% of the thickness of the paper, at an angle of 10 - 45° with respect to the surface of the paper board, at intervals of 0 5 - 8 mm and at a density of 2 - 11/cm , and having a water resistance of 80-260 g/m2 at the rugose surface, an air permeability of 200 - 2500 sec./100cc and a Mullen bursting strength after embossing of 3.5 - 14 kg/cm2 and having fine cracking in the water resisting coating at the rugose surface.
2 A paper box according to Claim 1, wherein said rugose patterns are in the form or at least one of semi-elliptic and spherical recesses, said recesses being arranged in a zig-zag manner.
3. A paper box according to Claim 2, in which the peripheral edges and the rugose patterns are connected by linear to non-linear recessed grooves having a depth of from 3/100 mm to 65/100 mm.
4. A paper board useful for forming a paper box for wrapping refrigerated meat comprising single or multi-ply paper board having a thickness of 20/100 - 80/100 mm, a degree of sizing of 900 - 4,200 seconds,a Cobb water absorption degree of less than 32 g/m2 which is embossed with rugose patterns having a length of 1 - 8 mm with a depth of 40 - 130% of the thickness of the paper, at an angle of 10 - 45° with respect to the surface of the paper board, at intervals of 0.5 - 8 mm and at a density of 2 - 11/cm2, and having a water resistance of 80 - 260 g/m2 at the rugose surface, an air permeability of 200 to 2500 sec./100cc and a Mullen bursting strength after embossing of 3.5 - 14 kg/cm2 and having fine cracking in the water resistant coating at the rugose surface.
5. The paper board of Claim 4, wherein said rugose patterns are in the form of at least one of semi-elliptic and spherical recesses, said recesses being arranged in a zig-zag manner.
6. The paper board of Claim 4, wherein the peripheral edges and the rugose patterns are connected by linear to non-linear recessed grooves having a depth of from 3/100 mm to 65/100 mm.
7. The paper board of Claim 1, 2 or 4 in which the Cobb water absorption degree is less than 24 g/m2.
8. The paper board of Claim 1, 2 or 4 in which the bursting strength is in the range 3.5 - 12.5 kg/cm2.
9. The paper board of Claim 1, 2 or 4 in which the depth of the rugose pattern is from 70 to 110% of the thickness of the paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA222,686A CA1036548A (en) | 1975-03-20 | 1975-03-20 | Paper box for wrapping refrigerated meat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA222,686A CA1036548A (en) | 1975-03-20 | 1975-03-20 | Paper box for wrapping refrigerated meat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1036548A true CA1036548A (en) | 1978-08-15 |
Family
ID=4102602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA222,686A Expired CA1036548A (en) | 1975-03-20 | 1975-03-20 | Paper box for wrapping refrigerated meat |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1036548A (en) |
-
1975
- 1975-03-20 CA CA222,686A patent/CA1036548A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3902650A (en) | Paper box for wrapping refrigerated meat | |
| US4478858A (en) | Instant coffee containing packet and method of forming | |
| CA1313542C (en) | Fibrous microwave susceptor packaging material | |
| CA2551814C (en) | Flexible microwave cooking pouch containing a raw frozen protein portion and method of making | |
| BR9810834A (en) | Packaging container for storing liquid food and process by folding and sealing to reform a flat packaging container sheet | |
| US4256770A (en) | Preservation of perishable comestibles | |
| JPS58501221A (en) | container lid | |
| US5880150A (en) | Antimicrobial agent containing allyl isothiocyanate and method for controlling release speed of allyl isothiocyanate | |
| CA1036548A (en) | Paper box for wrapping refrigerated meat | |
| CA2391352A1 (en) | Method of microwave heating of food | |
| US5744205A (en) | Semi-sealed or sealed package for preserving produce composed of resin covered paper | |
| US2336291A (en) | Method of packing perishables and package | |
| EP3112289B1 (en) | Packaging for perishable goods | |
| US3867249A (en) | Plastic cooking film | |
| US2110410A (en) | Preservation of fresh flesh products | |
| US2999758A (en) | Ice cream package | |
| KR101893595B1 (en) | Packing box for frozen marine products | |
| US20050199359A1 (en) | Method for manufacturing laminated hd (high-density) paper with good oxygen-barrier properties, and hd paper obtained thereby | |
| EP2800707B1 (en) | Packaging sheet, packaging and associated manufacturing method | |
| KR840000491B1 (en) | Paper box for wrapping trozen meat | |
| CA1231683A (en) | Fish wrapper | |
| NO147064B (en) | WATERPROOF PAPER PLATE SUITABLE FOR THE PREPARATION OF A PAPER BOX FOR PACKAGING COOLED CHEESE, AND SUCH A PAPER BOX | |
| KR790001335B1 (en) | The paper box for packing frozen meat | |
| KR100229216B1 (en) | Corrugated cardboard having a zeolite layer and manufacturing method thereof | |
| US2755213A (en) | Laminated wrapping |