AP336A

AP336A - Pouch for storage.

Info

Publication number: AP336A
Application number: APAP/P/1992/000364A
Authority: AP
Inventors: Kamal Meattle
Original assignee: Standipack Private Ltd
Priority date: 1992-02-21
Filing date: 1992-02-21
Publication date: 1994-03-14
Also published as: AP9200364A0

Abstract

The present invention relates to a pouch for storage and dispensing

Description

This in veil t ι υιι relates to ’j pouch for storage jnd dispensing of oil such as grease and lubricating oil.

Though reference is made to lubricating oil as the liquiil and to which the pouch nas an advantageous application, such a reference is only by way of an exemplary embodiment and without implying any limitation on the scope of the invention.

PRIOR ART lubricating oil are presently stored in plastic or 10 aluminium containers closed by a metallic diaphragm at the mouth of said container. Holes are punched in the metallic diaphragm for allowing a dischVF^e of. 1 j»A disadvantage of such a container is that of transportation to the oil filling location as the container occupies a substantial volume and, consequentially, the transportation costs contribute to the end costs of the product. Yet a further disadvantage is of the disposal of the used containers.

OBJECTS OF THE INVENTION

A primary object of the invention is to propose a pouch fot -:. orageand dispensing of grease and lahricatinc oil.

'•'’t another object of this invention is t <- propose .

.1 pouch for storage and d i s pe a > i u .; of liibricnt ing oil

BAD ORIGINAL which is substantially cheaper in costs than the known containers.

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According to this invention there is provided 5 a pouch for storage of oil such as grease or lubricating

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i)	a front sheet,
	ii)	a back sheet.
	iii)	a bottom or base	sheet,
10	iv)	said front sheet	securedly held in a heat sealed

relationship to the back sheet along the vertical sides ,

v) said base sheet securedly held in a heat sealed

·.·?> •rtwseer··· r* relationship to the front and back sheet, vi) the upper .nd of the pouch adapted to be heat sealed when the oil is disposed therein, vii) the front, back and base sheets comprising a polyester sheet adhered to a coextruded sheet, viii) said coextruded sheet consisting of layers selected from low density polyethylene, linear low density z

polyethylene and high density polyethylene.

In accordance with this invention the pouch comprises a front sheet securedly held in a heat sealed relationship to a back sheet along the vertical sides. The pouch bad original d

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further ha	ιj base sheet	sec iir ed 1 y	held in a	heat
sealed r <· 1	aliouship to tiic front and back sheets in
a sealing	zon e . '’η r t h e r .	and when	the oil is	filled
within the	pilUC il . I lie u ρ μ	er side of	the pouch	is heat

sealed. An oblique tear zone is provided with said pouch which, upon tearing, allows a discharge of the oil.

Such features of a pouch are known in the arc and do not form a concept of the present invention. However, it was hitherto not known to provide a pouch for storage and dispensing of lubricating oil. Specifically, the pouch of the present invention has an advantageous application for storage of lubricating oil, which is now possible by the coextruded layers forming the back and front sheets of the pouch. The front and back sheets of the poucfi^each comprises a polyester sheetadhered to a coextruded sheet selected from layers of low density polyethylene, linear low density polyethylene, an'd high density polyethylene.

Preferably, the front and back sheets of the pouch comprises a three layer coextruded film or sheet of low density polyethylene, linear low density and high density po1yethy1ene. lovever, the back and front sheet can consist of only two coextruded layers jnd, wnerein, one of the layers is high density po 1 y e t h y 1 e n.

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In jc c o r d a iic e with a preferred embodiment of this invention, the I r uni sheet comprises .i act :i I I i sed μα I vcslcr sheet .ilhered to ;> three lover coextrudcd film nr sheet .ml, wherein, t lie metallised polyester sheet beiii;; the outer sheet. *lic innermost or contact layer is :i i ” h density polyethylene.

The bock sheet in accordance with a preferred embodiment also comprises an outer polyester sheet adhered to a three layer coextruded film or sheet and, wherein, the outer layer is the polyester layer. The innermost or contact layer is high density po 1 y e t h y 1 ene .

Any suitable adhesive may be used such as polyurethene two component adhesive for adhering the polyester layer to the coextruded layers.

The base or bottom layer also comprises a three layer coextruded film or sheet selected from low density polyethylene, linear low density polyethylene and high density polyethylene, the latter being the innermost or contact'layer.

DESCRIPTION OF INVENTION WITH REFERENCE TO ACCOMPANYING

DRAVIN6S.

Figure 1 shows the pouch of the present invention;

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Figure	2 Λ	shows sectional view on an enlarged
sea 1 c	of the front sheet; and
F i g u r e	2R	shows	a sectional view on an enlarged
		sea le	of the back sheet.
Referri	»s	to the	drawings and vith particular

reference to Figure 1 the pouch 10 of the present invention comprises a back sheet 11 and a front sheet 12. The back sheet 11 is beat sealed to the front sheet 12 along the longitudinal sides 13A and 13B. 10 The pouch 10 further comprises a base sheet 14 adapted to be held in a heat slidable relationship to the backsheet 11 and the front sheet 12 along heat sealed zone 15.

The upperxjtjndQf pouch 10 is also helflirftfta ,‘·*ν-’ί<Ελit&t -* .W·.·»·,,.

heat sealed relationship vhen oil is disposed within the pouch. An oblique tear zone 17 is provided vith pouch 10 vhich vhen torn forms an opening for discharge of oil froa pouch 10.

Such features of a pouch are known in the art and do not form a concept of the present invention.

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Hovever, and as described hereinabove, it was not hitherto kiovn to have a pouch for storage and dispensing of lubricating oil. The pouch 1Π of the present invention has a particular and advantageous application : A :

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for stor.ir.e and dispensing of ;;r case or I u l> r i c a t i n r;

Specifically, io a c c o r Ί a n c e with the present invention .mil with rel e.'CiiCC to * i;; u r Ο 2A, the bjek sheet 11 of the pouc.i is loraied of cocxtruded layers selected from nigh density po 1 ycthylene, low density polyethylene and linear low density polyethylene. The cocxtruded film can consist of two or three layers.

The preferred embodiment of the back sheet illustrated in Figure 2A shows a sheet or film of polyester sheet lid adhered to said coextruded layers and, wherein, the polyester sheet forns the outer sheet.

In accordance with one embodiment of this invention, the coextruded film comprises an inner or contact layer of linear low density polyethylene with the outer layer .. s,, ^fe·.

lid being polyester and the low density polyethylene layer and high density polyethylene layer being sandwich layers, between said polyester sheet and the inner contact layer. Low density polyethylene and high density polyethylene may be provided in any arrangement with respect to each other.

In accordance with a preferred embodiment of this invention and .is shown in Figure 2A, the

APO 0 0 3 3 6 'Ί coextruded film comprises an inner or contact layer 11c of high density polyethylene with the outer layer lid being polyester and low density polyethylene Ila and linear low density polyethylene lib being the sandwich layers provided therebetween in any arrangement.

Reference is now made to the front sheet 12 as shown in Figure 2B. The front sheet 12 also comprises a coextruded film selected from high density polyethylene, low density polyethylene and linear low density polyethylene.

The coextruded layers can consist of two or three layers as in the instance of back sheet 11.

Figure 2B shows a preferred embodiment of three layers consisting of high density polyethylene layer

12c, low density polyethylene layer 12a and linear low density polyethylene layer 12b with an outer layer of metallised polyester 12d adhered to the coextruded layers.

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In accordance with one embodiment, the inner or 20 contact layer is linear low density polyethylene 12b and in which instance the inner or contact layer of the back sheet would also be linear low density polyethylene layer Ila.

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In accordance with a.iother embodiment, the inner or contact layer or front sheet 12 is high density polyethylene layer 12c and in which instance the inner or contact layer of back sheet 11 is also high density polyethylene layer 11cThe base sheet consists of a coextruded filo or sheet of two or three layers selected from low density polyethylene, linear low density polyethylene and high density polyethylene with a polyester sheet10 adhered thereto. The base of bottom sheet 14 has a construction similar to that of back sheet 11.

In the instance where the contact layer is of high density polyetffylen^ the polyester f^yer should preferably have a minimum thickness of 12 15 microns, che low density polyethylene and linear ' density polyethylene layers should have a minimum thickness of 72 microns and the high density polyethylene layer should have a minimum thickness of 36 microns.

In the instance where linear low density θ polyethylene is the contact layer, then the polyester layer should have a minimum thickness of 12 microns, the linear low density polyethylene and low density polyethylene should have a thickness each of 47 :0:

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AP Ο Ο Ο 3 3 6 microns ιιΐ'Ι tin· :ιι.;;ι density polyethylene should have ο minimum thickness of ^r»O microns.

Λ typical 20 ml lubricating pouch of the present invention has the following properties:

Front sheet consisting of silver metallised ‘ Λ 1 polyester adhered to coextruded layers of low density polyethylene, linear low density polyethylene and high density polyethylene and where high density polyethylene is the contact layer and the polyester layer is the outer layer.

The back sheet consists of polyester adhered to coextruded layers of low density polyethylene, linear lo- density polyethylene and high density polyethylene and which*was. pigaentetf white in the central layer and, wherein, the high density polyethylene is the inner or contact layer and the polyester sheet is the outer sheet.

' The base of bottom sheet consists of an outer sheet of polyester adhered to the coextruded layers of low density polyethylene, linear low density polyethylene

Ί and high density polyethylene.

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The polyester layer has a thickness of 12 microns, linear low density polyethylene and low density polyethylene 7 2 microns, high density polyethylene ?f> microns.

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The seal strength al ihe manufacturing stage (ASTM F S8-H5) are as follows:

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Side Seals

Bottom Seals

4.5 Kgs/15 l.near mn(min) 4.0 Kgs/15 linear For the following seals mm(min)

a) Right of front

b) Left of Front

For the following Seals

a )	Right of	f ront
b)	Left of front
c)	Centre of	front
d)	Right of	back
e)	Left of back
f)	Centre of	back

Top Seal

3.5 Kgs/15 linear mm(min)

The peel strength at the manufacturing stage (ASTM F 904-84) is as follows:

Length vise Width wise

350 Gras/15 linear mm (rain) 350 Cras/15 linear mm(min)

X

a) Between Met Pet & Poly. - a) Between Met Pet 4 Polv.

• b) Between Pet 4 Poly b) Between Pet 4 Poly.

The dead weight bearing capacity is 125 kilos.

The oxygen transmission rate of laminate is as follows:

a) 50 ccI m2 /24 hours at 27+/-1 deg C 4 65+/-22 RH for metallised area (max).

b) 7 5 dc/ra2/24 hours .it 27+/-1 Jeg C £ 65 + /-22 Rif- for metallised area (max).

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II •tie ·. ι f '· γ ν .ι ρ,, ιι r ι. γ .ι ϋ . „ι ι s . ί ο η rite of I ,ι ,.ι ί ιι a l c is . ι j f ο 1 I ο ι.· ..:

	ι ) 2.9 , m s i.i 2 ! 2 '> ι' u r s .it		+ /-1 .Ie;; C	·> 90+/-22 2!i
			•ne 1.1 I I i sed	a r ea (aax ) .
5	b) 2 . 2 ijm sλ 2 / 2 4 :iours .it	3S	+ /-1 d e jj C	ώ 90+/-22 RU
			metal 1i s e d	area («ax).
	The ba loon bursting te	s t	was 1.9 kilos/Cil^ (min)

Claims

1. A pouch for storage of oil such as grease or lubricating oil comprising:

i) a front sheet, ii) a back sheet, iii) a bottom or base sheet, iv) said front sheet securedly held in a heat sealed relationship to the back sheet along the vertical sides;

v) said base sheet securedly held in a heat sealed relationship to the front and back sheet, vi) the upper end of the pouch adapted to be heat sealed when the oil is disposed therein, vii) the front, back and base sheets comprising an outer sheet adhered to a coextruded sheet, characterised in that said coextruded sheet consists of at least two layers selected from low density polyethylene, linear low density polyethylene and high density polyethylene.

2. A pouch as claimed in claim 1 wherein the coextruded sheet comprises three layers selected from high density polyethylene, low density polyethylene and linear low density polyethylene.

3. A pouch as claimed in claim 1 wherein the coextruded sheet has an inner or contact layer of high density polyethylene.

4. A pouch as claimed in claim 1 wherein the coextruded sheet has an inner or contact layer of linear low density polyethylene.

5. A pouch as claimed in claim 3 wherein the low density polyethylene and linear low density polyethylene has a minimum thickness of 72 microns.

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AP Ο Ο Ο 3 3 6

6. A pouch as claimed in claim 4 wherein the high density polyethylene layer has a minimum thickness of 50 microns and the low density polyethylene and linear low density polyethylene has a minimum thickness of 47 microns.

7. A pouch as claimed in claim 3 wherein high density polyethylene has a minimum thickness of 36 microns.