# US 2021/0276764 A1 · Plastic film bottom bag and use thereof as well as blank for a plastic film bottom bag

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2021/0276764 A1
- Document ID: US20210276764A1
- Status: Published application
- Kind: A1
- Application number: 17/194,040
- Filed: 2021-03-05
- Published: 2021-09-09
- Earliest claimed: 2020-03-05
- Assignees: Mettler Packaging LLC
- Applicants: Mettler Packaging LLC
- Inventors: Georg Donner
- Web page: https://patentgrep.com/patent/US20210276764A1

## CPC

- B65D 31/08: {with block bottoms}
- B65D 31/10: {with gusseted sides}
- B65D 31/005: {by folding a single blank to U-shape to form the base of the bag and opposite sides of the body-portion, the remaining sides being formed by extensions of one or more of these opposite sides (cartons B65D5/18)}
- B65D 33/02: Local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames {(B65D33/007 takes precedence)}
- B65D 33/08: Hand holes
- B65D 33/105: {U-shaped}
- Y02W 30/80: Packaging reuse or recycling, e.g. of multilayer packaging (bio-packaging Y02W90/10)
- 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
- Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

## Abstract

A plastic film bottom bag has a plastic film front wall that is welded or adhesively joined to side wall sections of adjoining plastic film side walls, and/or a plastic film rear wall that is welded or adhesively joined to the side wall sections of the adjoining plastic film side walls, so as to form a seam or casing seam. Further disclosed is a plastic film bottom bag, in which at least one, in particular both, plastic film side walls are provided with a side fold that comprises a welded or adhesive joint extending from or at a distance from the bag opening edge in the direction of the bag end or up to the bag end. The disclosure further relates to blanks for the plastic film bottom bags described herein and to the use of the plastic film bottom bags described herein, as reusable bags or reusable handbags.

## Claims

### Claim 1

A plastic film bottom bag having a bag opening and an opposite bag end, comprising:
a plastic film front wall having a bag opening edge and a first side edge and an opposite second side edge,
a plastic film rear wall having a bag opening edge and having a first side edge and an opposite second side edge,
a first plastic film side wall having a bag opening edge and having a first side fold extending from or at a distance from the bag opening edge in the direction of the bag end or up to the bag end, the first plastic film side wall comprising, on either side of the first side fold, a first side wall section and a second side wall section which extend from the first side fold to the first side edge of the plastic film front wall and to the first side edge of the plastic film rear wall, respectively,
a second plastic film side wall having a bag opening edge and having a second side fold extending from or at a distance from the bag opening edge in the direction of the bag end or up to the bag end, the second plastic film side wall comprising, on either side of the second side fold, a first side wall section and a second side wall section which extend from the second side fold to the second side edge of the plastic film front wall and to the second side edge of the plastic film rear wall, respectively, and
a plastic film bag bottom having an inner side and an outer side, wherein:
in a transition from the plastic film front wall to the first side wall section of the first plastic film side wall, the plastic film front wall and the first side wall section of the first plastic film side wall are welded or adhesively bonded to one another, and/or
in a transition from the plastic film front wall to the first side wall section of the second plastic film side wall, the plastic film front wall and the first side wall section of the second plastic film side wall are welded or adhesively bonded to one another, and/or
in a transition from the plastic film rear wall to the second side wall section of the first plastic film side wall, the plastic film rear wall and the second side wall section of the first plastic film side wall are welded or adhesively bonded to one another, and/or
in a transition from the plastic film rear wall to the second side wall section of the second plastic film side wall, the plastic film rear wall and the second side wall section of the second plastic film side wall are welded or adhesively bonded to one another,
and/or wherein:
the first side fold comprises, in sections or completely, a first side fold welded or adhesive joint extending from or at a distance from the bag opening edge in the direction of the bag end or up to the bag end, the first plastic film side wall comprising, on either side of the first side fold welded or adhesive joint, the first side wall section which extends from the first side fold welded or adhesive joint to the first side edge of the plastic film front wall, and the second side wall section which extends from the first side fold welded or adhesive joint to the first side edge of the plastic film rear wall, and/or
the second side fold comprises, in sections or completely, a second side fold welded or adhesive joint extending from or at a distance from the bag opening edge in the direction of the bag end or up to the bag end, the second plastic film side wall comprising, on either side of the second side fold welded or adhesive joint, the first side wall section which extends from the second side fold welded or adhesive joint to the second side edge of the plastic film front wall, and the second side wall section which extends from the second side fold welded or adhesive joint to the second side edge of the plastic film rear wall.

### Claim 2 (depends on 1)

The plastic film bottom bag according to claim 1, wherein:
the first side fold comprises the first side fold welded or adhesive joint, and
the second side fold comprises the second side fold welded or adhesive joint.

### Claim at position 3

3-4. (canceled)

### Claim 5 (depends on 1)

The plastic film bottom bag according to claim 1, wherein:
the first side fold welded or adhesive joint, which is present between the first side wall section and the second side wall section of the first plastic film side wall constitutes an outwardly facing side fold welded or adhesive joint seam and/or
the second side fold welded or adhesive joint, which is present between the first side wall section and the second side wall section of the second plastic film side wall constitutes an outwardly facing side fold welded or adhesive joint seam.

### Claim 6 (depends on 1)

The plastic film bottom bag according to claim 1, wherein:
in the transition from the plastic film front wall to the first side wall section of the first plastic film side wall a fold is present and/or
in the transition from the plastic film front wall to the first side wall section of the second plastic film side wall a fold is present and/or
in the transition from the plastic film rear wall to the second side wall section of the first plastic film side wall a fold is present, and/or
in the transition from the plastic film rear wall to the second side wall section of the second plastic film side wall a fold is present.

### Claim 7 (depends on 1)

The plastic film bottom bag according to claim 1, wherein, in addition to the first side fold comprising the first side fold welded or adhesive joint and/or the second side fold comprising the second side fold welded or adhesive joint:
in the transition from the plastic film front wall to the first side wall section of the first plastic film side wall, the plastic film front wall and the first side wall section of the first plastic film side wall are welded, or are adhesively bonded to one another, and/or
in the transition from the plastic film front wall to the first side wall section of the second plastic film side wall, the plastic film front wall and the first side wall section of the second plastic film side wall are welded or adhesively bonded to one another, and/or
in the transition from the plastic film rear wall to the second side wall section of the first plastic film side wall, the plastic film rear wall and the second side wall section of the first plastic film side wall are welded or adhesively bonded to one another, and/or
in the transition from the plastic film rear wall to the second side wall section of the second plastic film side wall, the plastic film rear wall and the second side wall section of the second plastic film side wall are welded or adhesively bonded to one another.

### Claim 8 (depends on 1)

The plastic film bottom bag according to claim 1, wherein:
the plastic film front wall has a single-layer or multi-layer film strip on the inside and/or outside of the plastic film front wall in a region of the bag opening edge, and/or
the plastic film rear wall has a single-layer or multi-layer film strip on the inside and/or outside of the plastic film rear wall in a region of the bag opening edge, and/or
the first plastic film side wall has a single-layer or multi-layer film strip on the inside and/or outside of the first plastic film side wall in a region of the bag opening edge, and/or
the second plastic film side wall has a single-layer or multi-layer film strip on the inside and/or outside of the second plastic film side wall in a region of the bag opening edge.

### Claim 9 (depends on 8)

The plastic film bottom bag according to claim 8, wherein the single- or multi-layer film strip constitutes an opening edge seam and/or is formed in one piece with the plastic film front wall, the plastic film rear wall, the first plastic film side wall, or the second plastic film side wall.

### Claim 10 (depends on 1)

The plastic film bottom bag according to claim 1, wherein said plastic film bottom bag does not have any further welded joint or adhesive joint extending from or at a distance from the bag opening edge in the direction of the bag end or up to the bag end.

### Claim 11 (depends on 1)

The plastic film bottom bag according to claim 1, wherein:
the plastic film front wall and/or plastic film rear wall have/has a single- or multi-layer film material, and/or
film material of the plastic film front wall and/or plastic film rear wall comprises or consists of polyolefins.

### Claim 12 (depends on 1)

The plastic film bottom bag according to claim 1, wherein:
said plastic film bottom bag is formed substantially in one piece; and/or
the plastic film front wall, the plastic film bag bottom, and the plastic film rear wall are present in a contiguous manner, and/or
the plastic film front wall, the first side wall section of the first plastic film side wall, and the first side wall section of the second plastic film side wall are present in a contiguous manner, and/or
the plastic film rear wall, the second side wall section of the first plastic film side wall, and the second side wall section of the second plastic film side wall are present in a contiguous manner.

### Claim 13 (depends on 1)

The plastic film bottom bag according to claim 1, wherein:
a fold or crease is present in a transition from the plastic film front wall to the plastic film bag bottom, and/or
in a transition from the plastic film front wall to the plastic film bag bottom, the plastic film front wall and the plastic film bag bottom are welded or are adhesively bonded to one another and/or
a fold or crease is present in a transition from the plastic film rear wall to the plastic film bag bottom, and/or
in a transition from the plastic film rear wall to the plastic film bag bottom, the plastic film rear wall and the plastic film bag bottom are welded or are adhesively bonded to one another.

### Claim 14 (depends on 1)

The plastic film bottom bag according to claim 1, wherein:
a fold or crease is present in a transition from the first plastic film side wall to the plastic film bag bottom, and/or
in a transition from the first plastic film side wall to the plastic film bag bottom, the first plastic film side wall and the plastic film bag bottom are welded or are adhesively bonded to one another, and/or
a fold or crease is present in a transition from the second plastic film side wall the plastic film bag bottom, and/or
in a transition from the second plastic film side wall to the plastic film bag bottom, the second plastic film side wall and the plastic film bag bottom are welded or are adhesively bonded to one another.

### Claim 15 (depends on 1)

The plastic film bottom bag according to claim 1, wherein the plastic film bag bottom has a central fold or crease which extends at a distance from or from the first side edge in the direction of or up to the opposite second side edge.

### Claim 16 (depends on 1)

The plastic film bottom bag according to claim 1, wherein the width of the plastic film front wall and/or the width of the plastic film rear wall is greater than or equal to the sum formed from the width of the first side wall section of the first plastic film side wall and the first side wall section of the second plastic film side wall and/or the sum formed from the width of the second side wall section of the first plastic film side wall and the second side wall section of the second plastic film side wall.

### Claim 17 (depends on 1)

The plastic film bottom bag according to claim 1, wherein the plastic film bag bottom has an embossing welding pattern.

### Claim 18 (depends on 17)

The plastic film bottom bag according to claim 17, wherein the embossing welding pattern comprises or constitutes a honeycomb structure, a line structure, or an annular structure.

### Claim 19 (depends on 1)

The plastic film bottom bag according to claim 1, further comprising:
a first welded or adhesive joint that extends from a first mouth point in which a first bottom crease leads into the first side edge of the plastic film front wall and the first side fold welded or adhesive joint which ends at a distance from the plastic film bag bottom, and
a second welded or adhesive joint that extends from a second mouth point in which a second bottom crease leads into the first side edge of the plastic film rear wall and the first side fold welded or adhesive joint which ends at a distance from the plastic film bag bottom, and/or
a third welded or adhesive joint that extends from a third mouth point in which the first bottom crease leads into the second side edge of the plastic film front wall and the second side fold welded or adhesive joint which ends at a distance from the plastic film bag bottom, and
a fourth welded or adhesive joint that extends from a fourth mouth point in which the second bottom crease leads into the second side edge of the plastic film rear wall and the second side fold welded or adhesive joint which ends at a distance from the plastic film bag bottom.

### Claim 20 (depends on 19)

The plastic film bottom bag according to claim 19, wherein:
the first side fold welded or adhesive joint, the first welded or adhesive joint, and the second welded or adhesive joint have a common mouth region, and/or
the second side fold welded or adhesive joint, the third welded or adhesive joint, and the fourth welded or adhesive joint have a common mouth region.

### Claim 21 (depends on 1)

The plastic film bottom bag according to claim 1, wherein:
the first side fold welded or adhesive joint and the second side fold welded or adhesive joint extend up to the bag end,
a first welded or adhesive joint extends from a first mouth point in which a first bottom crease leads into the first side edge of the plastic film front wall and the first side fold welded or adhesive joint at a distance from the plastic film bag bottom, and
a second welded or adhesive joint extends from a second mouth point in which a second bottom crease leads into the first side edge of the plastic film rear wall and the first side fold welded or adhesive joint at a distance from the plastic film bag bottom, and/or
a third welded or adhesive joint extends from a third mouth point in which the first bottom crease leads into the second side edge of the plastic film front wall and the second side fold welded or adhesive joint at a distance from the plastic film bag bottom, and
a fourth welded or adhesive joint extends from a fourth mouth point in which the second bottom crease leads into the second side edge of the plastic film rear wall and the second side fold welded or adhesive joint at a distance from the plastic film bag bottom.

### Claim 22 (depends on 21)

The plastic film bottom bag according to claim 21, wherein:
the first side fold welded or adhesive joint, the first welded or adhesive joint, and the second welded or adhesive joint have a common first mouth region and/or
the second side fold welded or adhesive joint, the third welded or adhesive joint, and the fourth welded or adhesive joint have a common second mouth region.

### Claim 23 (depends on 22)

The plastic film bottom bag according to claim 22, wherein:
two triangular plastic film sections are adjacent in an area which spans between the first mouth point, in which the first bottom crease leads into the first side edge of the plastic film front wall, and the second mouth point, in which the second bottom crease leads into the first side edge of the plastic film rear wall, and the first mouth region, and/or
two triangular plastic film sections are adjacent in an area which spans between the third mouth point, in which the first bottom crease leads into the second side edge of the plastic film front wall, and the fourth mouth point, in which the second bottom crease leads into the second side edge of the plastic film rear wall, and the second mouth region.

### Claim 24 (depends on 1)

The plastic film bottom bag according to claim 1, further comprising:
at least one first carrying element on the plastic film front wall and/or at least one second carrying element on the plastic film rear wall.

### Claim 25 (depends on 24)

The plastic film bottom bag according to claim 24, wherein the at least one first carrying element and/or the at least one second carrying element constitutes a grip hole, a holding loop, or a handle.

### Claim 26 (depends on 24)

The plastic film bottom bag according to claim 24, wherein:
the first carrying element is attached or is present in the region of the single- or multi-layer film strip of the plastic film front wall; and/or
the second carrying element is attached or is present in the region of the single- or multi-layer film strip, of the plastic film rear wall.

### Claim 27 (depends on 1)

The plastic film bottom bag according to claim 1, further comprising:
an inlay bottom.

### Claim 28 (depends on 1)

A blank for a plastic film bottom bag according to claim 1, made of a single- or multi-layer plastic film having a plastic film front wall section, a substantially rectangular or square plastic film bag bottom section adjoining the plastic film front wall section along a first bottom side edge, and a plastic film rear wall section adjoining said plastic film bag bottom section, opposite the plastic film front wall section, along a second bottom side edge, wherein triangular or trapezoidal sections respectively adjoin opposite third and fourth bottom side edges of the plastic film bag bottom section which are not connected to the plastic film front wall section and the plastic film rear wall section,
wherein the plastic film front wall section has, on side edge contours which are opposite each other an extension section in each case, with an inclined bottom-side edge which forms an obtuse angle (α) with the first bottom side edge when the blank is arranged in a plane, wherein the distance between the opposite side edge contours of the plastic film front wall section substantially corresponds to the distance between the third and fourth bottom side edges, and
wherein the plastic film rear wall section has, on side edge contours which are opposite each other an extension section in each case, with an inclined bottom-side edge, which forms an obtuse angle (α′) with the second bottom side edge when the blank is arranged in a plane, wherein the distance between the opposite side edge contours of the plastic film rear wall section substantially corresponds to the distance between the third and fourth bottom side edges.

### Claim 29 (depends on 1)

A blank for a plastic film bottom bag according to claim 1, having a substantially rectangular or square basic shape and made of a single-layer or multi-layer plastic film, comprising;
a plastic film front wall section,
a substantially rectangular or square plastic film bag bottom section adjoining the plastic film front wall section along a first bottom side edge, and containing third and fourth bottom side edges which are opposite each other, and
a plastic film rear wall section which adjoins said plastic film bag bottom section, opposite the plastic film front wall section, along a second bottom side edge
wherein the plastic film front wall section has a substantially rectangular extension section in each case on side edge contours which are opposite each other,
wherein the plastic film rear wall section has a substantially rectangular extension section in each case on side edge contours which are opposite each other,
wherein a welded joint is present along the side edge contours, which are opposite each other, of the plastic film front wall section, and
wherein a welded joint is present along the side edge contours, which are opposite each other, of the plastic film rear wall section.

### Claim 30 (depends on 29)

The blank according to claim 29, wherein a welded joint is present along the third and fourth bottom side edges, respectively.

### Claim 31 (depends on 1)

Use of a plastic film bottom bag according to claim 1 as a reusable bag or reusable handbag.

### Claim 32 (depends on 1)

The plastic film bottom bag according to claim 1, wherein:
the plastic film front wall and the first side wall section of the first plastic film side wall are welded to one another along and in a region of a fold or crease so as to form a seam or casing seam, or
the plastic film front wall and the first side wall section of the second plastic film side wall are welded to one another along and in a region of a fold or crease so as to form a seam or casing seam, or
the plastic film rear wall and the second side wall section of the first plastic film side wall are welded to one another along and in a region of a fold or crease so as to form a seam or casing seam, or
the plastic film rear wall and the second side wall section of the second plastic film side wall are welded to one another along and in a region of a fold or crease so as to form a seam or casing seam.

### Claim 33 (depends on 1)

The plastic film bottom bag according to claim 1, wherein the first side fold is in sections or completely in the form of an outwardly facing side fold welded joint, and wherein the second side fold is in sections or completely in the form of an outwardly facing side fold welded joint.

### Claim 34 (depends on 1)

The plastic film bottom bag according to claim 1, wherein the first plastic film side wall is provided with the first side fold welded or adhesive joint and wherein the second plastic film side wall is provided with the second side fold welded or adhesive joint.

### Claim 35 (depends on 1)

The plastic film bottom bag according to claim 1, wherein:
the first side fold welded or adhesive joint has an average width in a range from 1.0 to 4.0 mm, and
the second side fold welded or adhesive joint has an average width in a range from 1.0 to 4.0 mm.

### Claim 36 (depends on 8)

The plastic film bottom bag according to claim 8, wherein the single-layer or multi-layer film strip is on the inside in the region of the bag opening edge.

### Claim 37 (depends on 8)

The plastic film bottom bag according to claim 8, wherein the single-layer or multi-layer film strip is a component of the plastic film front wall, the plastic film rear wall, the first plastic film side wall, and/or the second plastic film side wall.

### Claim 38 (depends on 11)

The plastic film bottom bag according to claim 11, wherein the film material of the plastic film front wall and plastic film rear wall comprises or consists of HD polyethylene.

### Claim 39 (depends on 21)

The plastic film bottom bag according to claim 21, wherein the first side fold welded or adhesive joint and the second side fold welded or adhesive joint are not adhesively bonded or welded to the plastic film bag bottom.

### Claim 40 (depends on 9)

The plastic film bottom bag according to claim 9, wherein:
a first carrying element is attached or is present in the opening edge seam of the plastic film front wall, and
a second carrying element is attached or is present in the opening edge seam of the plastic film rear wall.

### Claim 41 (depends on 27)

The plastic film bottom bag according to claim 27, wherein the inlay bottom is more rigid than the plastic film bag bottom.

### Claim 42 (depends on 29)

The blank according to claim 29, wherein the welded joints form a seam or casing seam.