TH12725A - Applications of this type of wrapping in the production line? For packaging with film. - Google Patents

Abstract

The process and machinery for attaching narrow, continuous strips of reusable wrapping material to a continuous film sheet in the production line involves forming, packaging, and sealing the wrap horizontally. To prepare a reusable wrap, the wrapping material is securely fastened within the longitudinal folds of the continuous film sheet. The continuous sheet then moves directly into the forming, packaging, and sealing machine. There, the continuous sheet is aligned horizontally, the product is placed on it, and the sheet is wrapped upwards, enclosing both sides of the product to form a longitudinal fold. The ends of the wrap are then sealed using a crossbeam sealing device, and the ends are trimmed from the continuous sheet, separating the finished wrap from subsequent wraps.

Claims (17)

1. The procedure for packing re-sealed food containers on a forming and sealing machine consists of: moving the continuous sheet of wrapping material forward; arranging a pair of interlocking strips of fastening material in a coordinated manner; releasing the interlocking strips of fastening material to form separate continuous lengths of fastening material and supporting these sections in a parallel manner; attaching the pair of narrow and continuous fastening strips to the continuous sheet of wrapping material at the attachment station, aligning them longitudinally relative to the continuous sheet at the attachment station; folding the continuous sheet of wrapping material longitudinally at the folding station to bring the fastening strips together; creating interlocking of the fastening strips; and maintaining a portion of the continuous sheet in a generally horizontal alignment for receiving the food items at the packing station. The process involves placing the food item onto the specified section of the continuous platform at the packing station; wrapping the sides of the continuous platform upwards around the food product, bringing opposite edges of the core together; tightly sealing these opposite edges to form a longitudinal rib-like seal; cross-sealing the continuous platform near the front end of the food item; cross-sealing the continuous platform near the tail end of the food item; making a tight transverse cut near the front end of the food item; and making a transverse cut near the tail end of the food item. 2. The procedure consistent with claim 1 shall be further comprising the deflection of the continuous sheet between the connection stations and the folding stations, with the deflection of the continuous core varying along the width of the sheet. 3. The procedure consistent with claim 2 herein shall result in the deflection of the continuous plate being minimized to a level closest to that of the strip serving as the fixing material. 4. The procedure consistent with claim 1 herein shall be such continuous sheet, which is the wrapping material, consisting of a laminated polymer material, including an outer layer consisting of ethibene vinyl acetate dotopolymer. 5. The procedure consistent with claim 4 herein, the process of bonding the fastening material to the wrapping material, shall consist of heating a predetermined area of the continuous core of the wrapping material to melt the coating on it, and the coating shall then be effective in bonding the fastening material to the wrapping material. 6. The procedure consistent with claim 1 herein shall be achieved by the application of a pre-applied, heat-melted adhesive to the fastening material. 7. The procedure consistent with claim 1 herein, the process of continuous bonding of the fixing material to the wrapping material, shall consist of melting the pre-prepared ethylene vinyl acetate coating on both the wrapping material and the fixing material while applying pressure to force the fixing material into contact with the wrapping material. 8. The finished equipment for fastening materials to wrapping and forming, packaging, and resealing re-opening wrapping material in the production line consists of: a frame; a device for supporting the continuous sheet of wrapping material; a device for moving the continuous sheet of wrapping material forward; a device for supporting the continuous length of the fastening material, consisting of the first and second interlocking strips, which are initially interlocked with each other; a device for releasing the interlocking strips of the first and second strips to form separate continuous longitudinal sections of the fastening material and hold these sections parallel to each other; a device for attaching the fastening material to the wrapping material at the joining station; and a device for preparing the longitudinal folds in the continuous sheet of wrapping material so that the first and second interlocking strips of the fastening material are joined together and positioned within the longitudinal folds in the wrapping material. Devices for interlocking the first and second interlocking strips; devices for maintaining the continuous sheet in a primarily flat horizontal structure for product support; devices for placing the product onto this section of the continuous sheet; devices for wrapping the first continuous sheet upwards around the product, bringing opposite edges together; devices for sealing the opposite edges tightly together to form a finned crystalline structure; devices for cross-sealing the first continuous sheet to create a horizontal seal for heating; and devices for cutting the continuous sheets transversely for wrapping to separate them for heating. 9. The finished machine, which conforms to claim 8, shall be further assembled with equipment for controlling the wrinkling of the continuous sheet. 10. A finished device that complies with claim 9 herein, such device for wrinkle control shall consist of rollers. 11. A finished product that conforms to claim 10 herein, such rollers shall have irregular diameters. 12. A finished machine conforming to claim 10 herein will tilt the said rollers, so that the axis of the rollers is not perpendicular to the direction of movement of the said continuous sheet. 13. A finished device conforming to claim 8 herein, for bonding the fastening material to the wrapping material, shall consist of a device for heating the flange of the fastening material and the corresponding part of the continuous wrapping plate, and a device for applying pressure to force the flange into contact with the corresponding part of the continuous plate. 14. A finished machine conforming to claim 13 herein shall have a heating device consisting of a pair of long heating elements positioned parallel to the direction of movement of the continuous plate at the bonding station. Such long heating elements shall be at least approximately 12 inches long and spaced apart from the continuous plate and the bonding material by a narrow gap during operation, and shall result in heating of the flange of the bonding material and the corresponding portion of the continuous plate by heat transfer via the heating elements. 15. A completed machine conforming to claim 14 shall be further assembled with a device to move the said heating element away from the said fixing material and the said continuous plate when the forward movement of the said continuous plate is interrupted. 16. The finished machine conforming to claim 15 also includes a pair of air knives for the effect of airflow on the material for such fixation and a continuous core when the forward movement of such continuous plate is interrupted. 17. A finished device that conforms to claim 13 herein, such device for applying pressure shall consist of a first and a second roller which are brought together in alignment with each other.