The present disclosure provides a process. In an embodiment, the process includes (A) providing a fitment with a base having a wall thickness (T.sub.w). The base comprises an ethylene/a olefin multi-block copolymer. The process includes (B) placing the base between two opposing multilayer films. Each multilayer film has a respective seal layer comprising an olefin-based polymer. The process includes (C) positioning the base and opposing multilayer films between opposing seal bars. Each seal bar comprises (i) a front surface, (ii) a recessed surface a distance (x) behind the front surface, the recessed surface having a first end and an opposing second end. Each seal bar comprises (iii) a curved surface at each opposing end. The curved surface extends between the front surface and the recessed surface. Each curved surface has a radius of curvature (Rc) greater than or equal to distance (x). The process includes (D) heat sealing the base to each multilayer film.

Described herein are embodiments of a pre-formed flexible packaging pouch comprising multiple compartments for storing products. This flexible packaging pouch permits conflicting products, not traditionally packaged together to be sold as one complete, light-weight, flexible unit.

A flexible package including a package body including a first side-surface film and a second side-surface film sealed in a peripheral portion. The package body has sealed portions formed in side edge portions such that a non-sealed portion is formed in at least one of the sealed portions. The non-sealed portion has a gas injection portion containing a gas which has a specific heat at constant volume of 0.67 kJ/kg.Math.deg or higher at 0 C. and 1 atm. The gas injection portion has a diameter of from 3 to 50 mm and is formed such that a repelling force is from 4 to 30 N at 23 C. and 1 atm when an entire gas injection portion is nipped from both sides of the first and second side-surface films and squeezed until a nipped gas injection portion has a width equal to a half of the diameter of the gas injection portion.

An accordion-sides square-bottom bag and manufacturing method thereof, comprising a paper tube (10) made by a sheet enclosing the sides; accordion sides are folded on two sides of the paper tube (10); the paper tube is provided with a first indentation line (21) and a second indentation line (22), the distance from the second indentation line (22) to the base being greater than the distance between the first indentation line and the second indentation line, but not exceeding twice the distance; two ends of the second indentation line (22) are symmetrically provided with a first crease line (31) and a second crease line (32), the distances between the respective ends of the first and second crease lines and the two edges of the paper tube (10) exceeding the folded depth of the accordion sides; and a first cutting line (41) and a second cutting line (42) are provided from the ends of the first and second crease lines to the base of the paper tube (10). The accordion-sides square-bottom bag enlarges the area of the glued surface of the bottom of the bag, such that the material on the bottom is uniformly distributed, and the bottom is adhered firmly, thus reducing the maximum thickness of the bottom, and reducing the footprint of packaged material during transportation.

An apparatus and a method for the processing of semi-finished sacks and a gluing station for semi-finished sacks include a feed element and a guide element. Semi-finished sacks having more complicated shapes, such as tubular pieces having open bottom squares with valve patches inserted therein, tend to be subjected to a partial gluing process or even suffer damage during the process of glue application in the nozzle clearance. Therefore, at least one feed element is provided, which is disposed upstream of a glue-application gap in the transport direction of the semi-finished sacks, and which together with the guide element defines a feed region of the semi-finished sacks to the application head. Components of the semi-finished sacks are guided through the feed region, which tapers in the transport direction of the semi-finished sacks.

A gusset bag is formed of a pair of flat surface parts facing each other, and side gusset parts folded to the inside of the bag. The gusset bag has side heat-sealing portions at which the sides of the flat surface part and sides of the side gusset parts are joined at the inner surfaces thereof, side heat-sealing portions at which the sides of the flat surface part and the other sides of the side gusset parts are joined at the inner surfaces thereof, and closing sealing portions at which the side heat-sealing portions and the side heat-sealing portions are joined at the outer surfaces of the side gusset parts by ultrasonic sealing. With this configuration, in the gusset bag, it is possible to easily close the gusset parts, while preventing film pieces or dust from entering the bag in a step of closing the gusset parts.

A flexible package including a package body including a first side-surface film and a second side-surface film sealed in a peripheral portion. The package body has sealed portions formed in side edge portions such that a non-sealed portion is formed in at least one of the sealed portions. The non-sealed portion has a gas injection portion containing a gas which has a specific heat at constant volume of 0.67 kJ/kg.Math.deg or higher at 0 C. and 1 atm. The gas injection portion has a diameter of from 3 to 50 mm and is formed such that a repelling force is from 4 to 30 N at 23 C. and 1 atm when an entire gas injection portion is nipped from both sides of the first and second side-surface films and squeezed until a nipped gas injection portion has a width equal to a half of the diameter of the gas injection portion.

A crop storage bag (1) made is of a high-strength textile (7) material which is extrusion-coated or laminated with a multilayer film (8) that comprises an insecticidal layer (9) in addition to a hermetic layer (10) which prevents oxygen from entering the bag. This oxygen barrier suffocates the insects inside the bag, and the insecticide kills insects that try to bore through the bag.

A flexible package having an inner sheet having a first surface and a second surface. The flexible package has an article reservoir for accepting an article to be shipped and one or more expansion chambers. The expansion chambers can be inflated or otherwise expanded to provide structure to the flexible package and to protect the article in the article reservoir.

A flexible package having an inner sheet having a first surface and a second surface. The flexible package has an article reservoir for accepting an article to be shipped and one or more expansion chambers. The expansion chambers can be inflated or otherwise expanded to provide structure to the flexible package and to protect the article in the article reservoir.