Easy tearing bags and packaging material
AssigneeTeckson International Limited
InventorLUEN SING TANG
Life of this patent
Estimating the term…
Abstract
A multi layered packaging material (10) comprises a first inner layer C and a second outer layer A. The inner layer has a line of weakness 34 extending there along while the second outer layer A is substantially intact along the line of weakness. In the packaging material 10, the line of weakness is formed by two pieces of material C1, C2 with their edges in substantial abutment, the abutted edges creating the line of weakness. Bags 20, 30, 40, 60, 70, 80, 90, 100, 130, 140, 150 may be formed from the packaging material. However, the bags so formed are not limited to having the line of weakness created by abutting edges in the inner layer C.
Claims77
A bag formed of one or more sheets of flexible material wherein at least one of the sheets is multi layered including an inner layer and an outer layer relative to the interior of the bag, the inner layer having at least one line of weakness with the outer layer being substantially intact along the line of weakness and tearable along the line of weakness, wherein the line of weakness extends from a first edge of the bag.
The bag as claimed in any one of the preceding claims wherein the first edge of the bag includes a nick at or adjacent to the or each line of weakness.
The bag as claimed in any one of the preceding claims wherein the or each line of weakness extends from the first edge of the bag to a second opposite edge of the bag.
The bag as claimed in any one of the preceding claims wherein the or each line of weakness is straight.
The bag as claimed in any one of the preceding claims wherein the or each line of weakness is visibly indicated on the bag.
The bag as claimed in any one of the preceding claims wherein the inner and outer layers are substantially the same size.
The bag as claimed in, any one of the preceding claims wherein the inner and outer layers are attached to each other adjacent to the or each line of weakness for substantially the length of the line of weakness.
The bag as claimed in any one of the preceding claims wherein the inner and outer layers are laminated together.
The bag as claimed in any one of the preceding claims including means for resealing.
The bag as claimed in any one of the preceding claims wherein the inner layer includes two or more lines of weakness which are spaced to define an intermediate portion separable from the bag.
The bag as claimed in any one of the preceding claims wherein the bag is formed of one sheet of flexible material folded back on itself to define two sheet portions, with first and second lines of weakness being formed on respective ones of said sheet portions, the first and second lines of weakness being substantially aligned with each other.
The bag as claimed in any one of the preceding claims wherein the bag contains a drinking straw or tube.
An enclosure or package formed of two overlapping sheets of flexible material wherein, in an empty state of the enclosure or package, the two sheets lay one directly upon the other, and wherein at least one of the sheets is multi layered including an inner layer and an outer layer relative to the interior of the enclosure or package, the inner layer having at least one line of weakness with the outer layer being substantially intact along the line of weakness and tearable along the line of weakness.
An enclosure or package formed of one sheet of flexible material folded back on itself to define two sheet portions wherein, in an empty state of the enclosure or package, the two sheet portions lay one directly upon the other and wherein the sheet is multi layered including an inner layer and an outer layer relative to the interior of the enclosure or package, the inner layer having at least one line of weakness with the outer layer being substantially intact along the line of weakness and tearable along the line of weakness.
A bag formed of one or more sheets of flexible material wherein at least one of the sheets is multi layered including an inner layer and an outer layer relative to the interior of the bag, the inner layer including two pieces with substantially abutting edges and having at least one line of weakness which is defined by the interface of the two pieces with the outer layer being substantially intact along the line of weakness and tearable along the line of weakness.
The bag as claimed in any one of clams 36 to 42 including means for resealing.
A bag formed of two overlapping sheets of flexible material wherein at least one of the sheets is multi layered including an inner layer and an outer layer relative to the interior of the bag, the inner layer having a first line of weakness with the outer layer being substantially intact along the first line of weakness wherein the other sheet also includes a second line of weakness substantially aligned with the first line of weakness such that the bag is tearable along the two lines of weakness.
A bag formed of one sheet of flexible material folded back on itself to define two sheet portions wherein at least one of the sheet portions is multi layered including an inner layer and an outer layer relative to the interior of the bag, the inner layer having a first line of weakness with the outer layer being substantially intact along the first line of weakness wherein the other sheet portion also includes a second line of weakness substantially aligned with the first line of weakness such that the bag is tearable along the two lines of weakness.
The bag as claimed in claim 61 wherein the bag includes a gusset portion formed at an end of the bag opposite to the strip when the bag has been torn along the or each line of weakness.
A bag formed with a front and back and a straight line of weakness formed between the front and the back such that the bag is tearable along the line of weakness, the bag further having a strip of flexible material inserted between the front and the back, the strip extending substantially parallel to the line of weakness such that the strip is adapted to function as a handle when the bag is torn along the line of weakness.
The bag as claimed in any one of the preceding claims including an additional layer disposed inwardly of the or each inner layer.
A multi layer packaging material having a first layer and a second layer wherein the first layer includes two pieces with substantially abutting edges and having at least one line of weakness which is defined by the interface of the two pieces with the second layer being substantially intact along the line of weakness and tearable along the line of weakness.
Dependencies are inferred from the claim text.