The present invention provides a simple, reliable and inexpensive way of unitizing numerous model merchandise in to a one packaged package with an overwrap material which cannot be effectively heat covered.
As soon as the provide equipment is compared with other apparatus presently used to pack items in corrugated containers and the fee for the corrugated boxes on their own, the innovation demonstrates a massive cost benefits. The invention has equivalent costs with kraft wrap nevertheless it offers a a lot tighter and better unitized package than that possible with kraft wrap. In addition to these aspects the invention are able to use stretch film, stretch netting material, or stretch mesh material which offers merchandise presence unachievable with kraft or corrugated wrapping. The netting and mesh includes the extra attribute of permitting the load “breathe.” This attribute is very appealing when stay develop is shipped and packaged. The present inventive system offers packaging speed, reliability because of the elimination of the package sealing problem and energy savings in that less energy is required to package the product furthermore.
A basic problem with shrink and noncling stretch film packaging is that the primary strength and reliability of the package is determined by the consistent quality of the seal. These seals rely on a careful maintenance of the sealing jaw bone and are never as powerful as the film alone. The time delivered to make the closes is actually a restricting factor in the feasible speeds of many film wrapping techniques. Associated problems are that some stretchable materials, in terms of illustration stretch netting, can not be temperature enclosed although thin film internet widths found in spiral wrapping cannot be successfully heat covered.
Within the recommended embodiment the current technology relies on a spiral wrapping approach to apply the film internet towards the stress.
The application of spiral wrapping machinery to wrap a load is well known inside the craft. One device is shown by U.S. Pat. No. 3,863,425 in which film is well guided coming from a roll and twisted close to a cylindrical fill inside a spiral configuration. A carriage pushes the film roll adjoining the surface of the load to down payment an overlapping spiral wrap across the returns and load within the complete opposite path to deposit yet another spiral overwrap across the weight. Other spiral wrapping device are explained by United states Pat. Nos. 3,857,486; 3,788,199; 3,549,017; 3,412,524; 3,191,289; and two,716,315. The in the past suggested patents count on warmth shrinkadhesives and material, a heat seal off or perhaps the tacky nature in the film to keep the external level of wrap within a set place.
Several other patents have detailed the use of components for wrapping loads. In U.S. Pat. No. 3,003,297 a complex cutting and holding system can be used to place tape on the container and work with the procedure getting repeated for every package. The unique function and design of your cutting, clamping and tying elements from the provide innovation fails to require a bonding or home heating of your film for the system to work.
Usa Pat. No. 2,088,133 discloses a reverse wrapping cable keying machine. In the reference point a gripper device holds a group constantly in place with respect to the weight to get packaged as well as a rotatable diamond ring generate rotates the music group round the stress till the music band has accomplished multiple wrap of the fill and passes by across the body of the gripper process.