A reusable mailer bag includes front, rear, first side, second side, and bottom panels which include interior surfaces that define a carrying volume that has an opening which is opposite the bottom panel. The mailer bag also includes a flap and a first side extension. The flap is configured to extend across the opening to close the carrying volume during shipping. The flap includes a first end portion that is attached to the rear panel and a second end portion that is configured to secure to the front panel. The first side extension extends from a first edge of the second end portion of the flap that is adjacent the first side panel. The first side extension is configured to extend around the first side panel and to secure to the rear panel when the second end portion is secured to the front panel.

An easy-to-open gunny sack sewn by a single thread is disclosed. The easy-to-open gunny sack minimizes the costs of sewing a gunny sack through single thread sewing, allows a user to easily open the sack, prevents a sewing-finished section formed by single thread sewing from being easily loosened, and allows the user to easily identify an opening identification tape and to open the sack using the opening identification tape. The easy-to-open gunny sack allows a clip tape (20) to cover at least one of upper and lower ends of a sack portion, allows a single-thread sewing portion (10) by single thread sewing to be formed around the covered portion, allows an extended clip tape portion (21) formed by extension of the clip tape to be formed at both sides of the single-thread sewing portion (10), and allows an anti-loosening means to be provided at the extended clip tape portion (21) of the end portion placed in a sewing proceeding direction.

An easy-to-open gunny sack sewn by a single thread is disclosed. The easy-to-open gunny sack minimizes the costs of sewing a gunny sack through single thread sewing, allows a user to easily open the sack, prevents a sewing-finished section formed by single thread sewing from being easily loosened, and allows the user to easily identify an opening identification tape and to open the sack using the opening identification tape. The easy-to-open gunny sack allows a clip tape (20) to cover at least one of upper and lower ends of a sack portion, allows a single-thread sewing portion (10) by single thread sewing to be formed around the covered portion, allows an extended clip tape portion (21) formed by extension of the clip tape to be formed at both sides of the single-thread sewing portion (10), and allows an anti-loosening means to be provided at the extended clip tape portion (21) of the end portion placed in a sewing proceeding direction.

A bag can include walls formed of a material having multiple layers, which can include a paper layer located between an outer layer and an inner layer. The outer layer can be formed from a nylon material and the inner layer can be formed from a polyolefin material, and the bag can exhibit grease-resistant properties. The bag can be formed into a variety of configurations, such as a sewn-open-mouth configuration in which a stitching element extends through a wall of the bag or a variety of pinch-type closure configurations.

A bag can include walls formed of a material having multiple layers, which can include a paper layer located between an outer layer and an inner layer. The outer layer can be formed from a nylon material and the inner layer can be formed from a polyolefin material, and the bag can exhibit grease-resistant properties. The bag can be formed into a variety of configurations, such as a sewn-open-mouth configuration in which a stitching element extends through a wall of the bag or a variety of pinch-type closure configurations.

A bag making apparatus and a bag making method make bags. The bag has a first panel part and a first flap part formed by folding a first sheet part, and a second panel part and a second flap part formed by folding a second sheet part. The first and second panel parts face each other. The first and second flap parts are interposed between the first and second panel parts and face each other. An open edge is formed by folded edges of the first and second sheet parts. The bag further comprises adhesive located between the open edge and the engagement tool, interposed between the first and second flap parts and extending across the widths of the first and second sheet parts to peelably adhere the first and second flap parts to each other. Alternatively, the second sheet part may only consists of the second panel part.

A thermoplastic flexible package includes a first non-shrinkable panel, an opposing second non-shrinkable panel, a first shrinkable panel and an opposing a second shrinkable panel. The panels are connected longitudinally with panel seals. The first non-shrinkable panel and the second non-shrinkable panel each forms a gusset. A first seal connects the first shrinkable panel and the second shrinkable panel in the transverse direction at or near the upper edges. A second seal that opposes the first seal connects the first and second non-shrinkable panels and the first and shrinkable panels in the transverse direction at or near the lower edges.

A thermoplastic flexible package includes a first non-shrinkable panel, an opposing second non-shrinkable panel, a first shrinkable panel and an opposing a second shrinkable panel. The panels are connected longitudinally with panel seals. The first non-shrinkable panel and the second non-shrinkable panel each forms a gusset. A first seal connects the first shrinkable panel and the second shrinkable panel in the transverse direction at or near the upper edges. A second seal that opposes the first seal connects the first and second non-shrinkable panels and the first and shrinkable panels in the transverse direction at or near the lower edges.

A package includes a print target material on which printing is to be performed by a printing apparatus. The package includes a plate-like member, a positioning target portion, and an opening portion. The plate-like member configured to hold a portion on which printing is to be performed, of the print target material to cause the portion to be flat. The positioning target portion is arranged in the plate-like member and configured to engage with a positioning member configured to position the print target material with respect to a printing position in the printing apparatus. A portion of a printing region of the print target material is opened in the opening portion.

A package includes a print target material on which printing is to be performed by a printing apparatus. The package includes a plate-like member, a positioning target portion, and an opening portion. The plate-like member configured to hold a portion on which printing is to be performed, of the print target material to cause the portion to be flat. The positioning target portion is arranged in the plate-like member and configured to engage with a positioning member configured to position the print target material with respect to a printing position in the printing apparatus. A portion of a printing region of the print target material is opened in the opening portion.