TH40820A - Packaging strip rolls and methods for manufacturing packaging strip rolls, packaging strip winding units, and packaging machines fitted with packaging strip reels. - Google Patents

Abstract

DC60 (15/12/42) This invention relates to: a roll of packaging strips and a method of their manufacture, in which the innermost end of the strip is firmly secured to prevent its unraveling and the strip can be smoothly pulled out to its innermost end for the purpose of packaging various items with strips; a packaging strip winding unit which prevents the deformation of the strip; and a packaging machine. The roll of strips 11 shall consist of a number of layers of resin packaging strips 11a that are spirally wound around a coreless hollow part 11b which is designated as the core of the roll of strips 11. The strip 11a is manufactured with thermoplastic resin. At least on its outer surface in the roll of strips 11, a number of pores 11d are perforated in the vicinity of the innermost end of the strip 11a to a number of laminated layers. Each pore 11d provides a fusion bonding area 11e along its circumference for bonding. The laminated layers of strip 11a are joined together. This invention relates to: the packaging strip roll and its manufacturing method, in which the innermost ends of the strip are firmly secured to prevent its unwinding and the strip can be smoothly pulled out to its innermost end for packaging various items with strips; the packaging strip winding unit which prevents its strip from deforming; and the packaging machine. The strip roll 11 shall consist of a number of layers of resin packaging strip 11a, spirally wound around a coreless hollow 11b which is designated as the core of the strip roll 11. Strip 11a is manufactured with thermoplastic resin. At least on its outer surface in the strip roll 11, a number of pores 11d are perforated in the vicinity of the innermost ends of strip 11a to a number of laminated layers. Each pore 11d provides a fuse bonding area 11e along its circumference to bond the laminated layers of strip 11a together.

Claims (8)

1. A packaging strip roll consists of several layers of packaging strips spaced apart and spirally wound around a core of a hollow strip roll. Including the several wound strip layers, the strip is made of thermoplastic resin at least on its outer surface and has the innermost end of the strip positioned within the hollow strip roll, where several pores are formed in and pass through the end of the innermost strip to several strip layers, and where the end of the innermost strip and subsequent strip layers are fused together through each pore to form the laminated strip layer. 2. The packaging strip roll pursuant to claim clause 1 shall be formed in which a number of external perforations shall be formed at the ends of the outermost strip and into a number of strip layers positioned below it. 3. Packaging strip rolls pursuant to claim paragraph 1, where each pore shall have parameters including its circumferential length, structural arrangement, its position, and the number of laminated strip layers through which the pore expands. Such parameters shall be based on the material type, thickness, and width of the packaging strip to achieve a balance between the tensile strength and the break-out strength of the laminated strip layers. 4. The method for producing packaging strip rolls consists of the following steps: arranging the stretched length of the packaging strip with the innermost end; wrapping the innermost end onto the winding roller; and forming a remaining layer of packaging strip on the innermost end. This is followed by punching through the strip layer with a punch heated to a predetermined temperature, creating perforations defined by the inner edges, and melting the inner edges to laminate the punched strip layer. The punch is then removed from the strip layer, the strip is spiraled to the desired length onto the winding roller to form the roll, and the roll is removed from the strip spool to form a coreless packaging strip roll. 5. Method for producing rolls of packaging strips according to claim paragraph 4, in which the roll rollers operate to expand or contract along the diameter. The roll rollers expand along the diameter while the packaging strip is wrapped around them to form the roll, and then contract along the diameter and is removed from the roll. 6. The method for producing rolls of packaging strips consists of the following steps: arranging the winding rollers and the extended length of the packaging strip with the innermost end; winding the innermost end onto the winding rollers; forming a number of continuous layers of packaging strip on the innermost end; laser beam application to the strip layers to form perforations defined by the perimeter; and fusion welding of the strip layers together within the perimeter. The packaging strip is then spiraled to the desired length on the winding rollers to form the roll, and the winding rollers are removed from the roll. 7. Method for producing rolls of packaging strips according to claim paragraph 6, in which the roll rollers operate to expand or contract along the diameter. The roll rollers expand along the diameter while the strip is wound around them to form the roll, and then contract along the diameter and are removed from the roll. 8. Packaging strip rolls, consisting of an elongated packaging strip with at least one outer surface molded from thermoplastic material. The packaging strip is spaced apart and wrapped around a central core in a way that forms a coreless assembly of packaging strips with the innermost free end of the strip and, subsequently, one of the next rolls surrounding the innermost roll, forming a sequence of layers of rolls extended radially relative to the central axis, where the innermost free end of the strip and at least one of the next rolls create tight contact with each other, forming a bond between the innermost free end of the strip and at least one of the next rolls.